Patent Grant
11709558
This application is a national stage application under 35 U.S.C. § 371 of International Application No. PCT/CN2020/107770, filed Aug. 7, 2020, the contents of which are incorporated by reference in the entirety.
The present invention relates to display technology, more particularly, to a display panel, a display apparatus, and a method of fabricating a display panel.
Various types of touch panels have been developed. Examples of touch panels include one-glass-solution (OGS) touch panels, on-cell touch panels, and in-cell touch panels. The on-cell touch panels provide high touch control accuracy. The on-cell touch panels can be classified into single-layer-on-cell (SLOC) touch panels and multi-layer-on-cell (MLOC) touch panels. In particular, multiple point touch control can be achieved in the MLOC touch panels with superior touch control accuracy and blanking effects.
In one aspect, the present disclosure provides a display panel having an array substrate and a counter substrate assembled together; wherein the display panel has a display region configured to display an image, a first window region, a second window region, and an inter-window region between the first window region and the second window region; the display panel comprises a first hole in the first window region and a second hole in the second window region; the inter-window region is directly adjacent to the first window region and directly adjacent to the second window region; wherein the display panel comprises a touch electrode layer in the display region and in the inter-window region, the touch electrode layer comprising a plurality of first touch electrodes and a plurality of second touch electrodes; wherein, in the inter-window region, a first respective one of the plurality of first touch electrodes and a second respective one of the plurality of second touch electrodes directly adjacent to each other are spaced apart by a first gap having a first gap width; in the display region, a third respective one of the plurality of first touch electrodes and a fourth respective one of the plurality of second touch electrodes directly adjacent to each other are spaced apart by a second gap having a second gap width; and the first gap width is greater than the second gap width.
Optionally, the first window region, the second window region, and the inter-window region are surrounded by the display region.
Optionally, display elements and thin film transistors are absent in the first window region and the second window region; and the display panel further comprises a first accessory installed in the first hole and a second accessory installed in the second hole.
Optionally, a fifth respective one of the plurality of first touch electrodes and a sixth respective one of the plurality of second touch electrodes directly adjacent to each other are spaced apart by an inter-region gap extending from the inter-window region into the display region; the inter-region gap comprises a first sub-gap in the inter-window region and a second sub-gap in the display region, the first sub-gap directly connected with the second sub-gap; the first sub-gap has a first sub-gap width; the second sub-gap has a second sub-gap width; and the first sub-gap width is greater than the second sub-gap width.
Optionally, the plurality of first touch electrodes and the plurality of second touch electrodes are mesh electrodes comprising mesh electrode lines; multiple mesh electrode lines directly adjacent to the first sub-gap have a line width greater than multiple mesh electrode lines directly adjacent to the second sub-gap.
Optionally, the plurality of first touch electrodes are a plurality of first mesh electrodes, each of which comprising a plurality of first mesh electrode lines; the plurality of second touch electrodes are a plurality of second mesh electrodes, each of which comprising a plurality of second mesh electrode lines; the first gap has a first boundary formed by dually connecting outer edges of multiple first mesh electrode lines of the first respective one of the plurality of first touch electrodes, and a second boundary formed by virtually connecting outer edges of multiple second mesh electrode lines of the second respective one of the plurality of second touch electrodes; the second gap has a third boundary formed by dually connecting outer edges of multiple first mesh electrode lines of the third respective one of the plurality of first touch electrodes, and a fourth boundary formed by virtually connecting outer edges of multiple second mesh electrode lines of the fourth respective one of the plurality of second touch electrodes; the first gap width is a first shortest distance between the first boundary and the second boundary; and the second gap width is a second shortest distance between the third boundary and the fourth boundary.
Optionally, the plurality of first touch electrodes and the plurality of second touch electrodes are mesh electrodes comprising mesh electrode lines; the mesh electrode lines comprises a plurality of first mesh electrode lines in the inter-window region and a plurality of second mesh electrode lines in the display region; a respective one of the plurality of first mesh electrode lines has a first line width; a respective one of the plurality of second mesh electrode lines has a second line width; the first line width is greater than the second line width; and an inter-region boundary between the inter-window region and the display region is defined by an imaginary line through which line widths of the mesh electrode lines transition from the first line width to the second line width.
Optionally, the mesh electrode lines comprises an inter-region mesh electrode line extending from the inter-window region into the display region; the inter-region mesh electrode line comprises a first sub-line in the inter-window region and a second sub-line in the display region, the first sub-line directly connected with the second sub-line; the first sub-line has a first sub-line width; the second sub-line has a second sub-line width; and the first sub-line width is greater than the second sub-line width.
Optionally, the inter-region mesh electrode line is directly adjacent to an inter-region gap extending front the inter-window region into the display region; the inter-region gap comprises a first sub-gap in the inter-window region and a second sub-gap in the display region, the first sub-gap directly connected with the second sub-gap; the first sub-gap has a first sub-gap width; the second sub-gap has a second sub-gap width; and the first sub-gap width is greater than the second sub-gap width.
Optionally, at least a first portion of a boundary of the first sub-gap in the inter-window region is formed by virtually connecting outer edges of the first sub-line of the inter-region mesh electrode line; at least a second portion of a boundary of the second sub-gap in the display region is formed by virtually connecting outer edges of the second sub-line of the inter-region mesh electrode line; and the first portion and the second portion are directly connected.
Optionally, the display panel further comprises a plurality of fill patterns in a same layer as the plurality of first touch electrodes and the plurality of second touch electrodes, the plurality of fill patterns insulated from the plurality of first touch electrodes and the plurality of second touch electrodes; wherein the plurality of fill patterns are limited in the display region, and absent in the inter-window region, the first window region, and the second window region.
Optionally, the display panel further comprises a plurality of blanking mesh breaks, a respective one of which breaking a mesh electrode line in an individual mesh electrode block; wherein the plurality of blanking mesh breaks are limited in the display region, and absent in the inter-window region, the first window region, and the second window region.
Optionally, the first gap comprises a plurality of first portions, each of which oriented along a first orientation, and a plurality of second portions, each of which oriented along a second orientation; the second gap comprises a plurality of third portions, each of which oriented along the first orientation, and a plurality of fourth portions, each of which oriented along the second orientation; a respective one of the plurality of first portions has a first portion gap width; a respective one of the plurality of second portions has a second portion gap width; a respective one of the plurality of third portions has a third portion gap width; and a respective one of the plurality of fourth portions has a fourth portion gap width.
Optionally, the first portion gap width is greater than the third portion gap width and the fourth portion gap width; and the second portion gap width is greater than the third portion gap width and the fourth portion gap width.
Optionally, the display panel comprises a touch insulating layer underneath the touch electrode layer and in contact with the touch electrode layer; the touch insulating layer has a first contacting surface in contact with the touch electrode layer in the inter-window region and a second contacting surface in contact with the touch electrode layer in the display region; the first contacting surface has a first degree of unevenness; the second contacting surface has a second degree of unevenness; and the first degree of unevenness is greater than the second degree of unevenness.
Optionally, the display panel comprises an encapsulating layer underneath a touch control structure comprising the touch electrode layer, the encapsulating layer in contact with the touch control structure; the encapsulating layer has a first contacting surface in contact with the touch control structure in the inter-window region and a second contacting surface in contact with the touch control structure in the display region; the first contacting surface has a first degree of unevenness; the second contacting surface has a second degree of unevenness and the first degree of unevenness is greater than the second degree of unevenness.
Optionally, the touch control structure comprises a touch insulating layer between the touch electrode layer and the encapsulating layer; the touch insulating layer is in contact with the touch electrode layer; and the touch insulating layer is conformally shaped in accordance with the encapsulating layer.
Optionally, the respective one of the plurality of first touch electrodes comprises a plurality of first touch electrode blocks arranged along a first direction; the respective one of the plurality of second touch electrodes comprises a plurality of second touch electrode blocks arranged along a second direction; the plurality of first touch electrode blocks are electrically connected to form a first conductive channel along the first direction, adjacent first touch electrode blocks of the plurality of first touch electrode blocks are connected through a first electrode bridge; the plurality of second touch electrode blocks are electrically connected to form a second conductive channel along the second direction, adjacent second touch electrode blocks of the plurality of second touch electrode blocks are connected through a second electrode bridge; the plurality of first touch electrode blocks, the plurality of second touch electrode blocks, and one of the first electrode bridge and the second electrode bridge are in a first touch material layer, and made of a same material; another of the first electrode bridge and the second electrode bridge is in a second touch material layer different from the first touch material layer.
Optionally, the second touch material layer is between the array substrate and the first touch material layer.
Optionally, the display panel further comprises a plurality or thin film transistors in the display region and in the inter-window region; wherein the display panel comprises: a base substrate; an insulating layer on the base substrate; an active layer of a respective one of the plurality of thin film transistors on a side of the insulating layer away from the base substrate S; a first gate insulating layer on a side of the active layer away from the base substrate; a gate electrode and a first capacitor electrode on a side of the first gate insulating layer away from the insulating layer; a second gate insulating layer on a side of the gate electrode and the first capacitor electrode away from the first gate insulating layer; a second capacitor electrode on a side of the second gate insulating layer away from the first gate insulating layer; an inter-layer dielectric layer on a side of the second capacitor electrode away from the second gate insulating layer; a source electrode and a drain electrode on a side of the inter-layer dielectric layer away from the second gate insulating layer; a passivation layer on a side of the source electrode and the drain electrode away from the inter-layer dielectric layer; a first planarization layer on a side of the passivation layer away from the inter-layer dielectric layer; a second planarization layer on side of the first planarization layer away from the passivation layer; a relay electrode on a side of the second planarization layer away from the first planarization layer; and a pixel definition layer on a side of the second planarization layer away from the base substrate.
Optionally, the display panel further comprises a plurality of display elements in the display region and a plurality of dummy display elements in the inter-window region; wherein the display panel comprises an anode on a side of a second planarization layer away from a first planarization layer, the anode is limited in the display region and absent in the inter-window region; a light emitting layer in the display region and in the inter-window region, the light emitting layer in the display region on a side of the anode away from the second planarization layer, the light emitting layer in the inter-window region on a side of the second planarization layer away from the first planarization layer; a cathode layer in the display region and in the inter-window region, the cathode layer on a side of the light emitting layer away from the second planarization layer; and an encapsulating layer on a side of the cathode layer away from the light emitting layer, the encapsulating layer encapsulating the plurality of display elements in the display region and the dummy light emitting element in the inter-window region.
In another aspect, the present disclosure provides a display apparatus, comprising the display panel described herein or fabricated by a method described herein, and an integrated circuit connected to the display panel
In another aspect, the present disclosure provides a method of fabricating a display panel having an array substrate and a counter substrate assembled together, comprising forming a first hole in a first window region; and forming a second hole in a second window region; wherein the display panel is formed to have a display region configured to display an image, the first window region, the second window region, and an inter-window region between the first window region and the second window region; and the inter-window region is directly adjacent to the first window region and directly adjacent to the second window region; the method further comprises forming a touch electrode layer in the display region and in the inter-window region, forming the touch electrode layer comprising forming a plurality of first touch electrodes and forming a plurality of second touch electrodes; wherein forming the touch electrode layer comprises forming a first gap having a first gap width in the inter-window region to space apart a first respective one of the plurality of first touch electrodes and a second respective one of the plurality of second touch electrodes directly adjacent to each other and in the inter-window region; and forming a second gap having a second gap width in the display region to space apart a third respective one of the plurality of first touch electrodes and a fourth respective one of the plurality of second touch electrodes directly adjacent to each other and in the display region; wherein the first gap width is greater than the second gap width.
Optionally, forming the touch electrode layer comprises forming an inter-region gap extending from the inter-window region into the display region to space apart a fifth respective one of the plurality of first touch electrodes and a sixth respective one of the plurality of second touch electrodes directly adjacent to each other; wherein forming the inter-region gap comprises forming a first sub-gap in the inter-window region and forming a second sub-gap in the display region, the first sub-gap directly connected with the second sub-gap; the first sub-gap has a first sub-gap width; the second sub-gap has a second sub-gap width; and the first sub-gap width is greater than the second sub-gap width.
Optionally, the plurality of first touch electrodes and the plurality of second touch electrodes are mesh electrodes comprising mesh electrode lines; multiple mesh electrode lines directly adjacent to the first sub-gap have a line width greater than multiple mesh electrode lines directly adjacent to the second sub-gap.
Optionally, forming the plurality of first touch electrodes comprises forming a plurality of first mesh electrodes, each of which comprising a plurality of first mesh electrode lines; and forming the plurality of second touch electrodes comprises forming a plurality of second mesh electrodes, each of which comprising a plurality of second mesh electrode lines; a first boundary of the first gap is formed by virtually connecting outer edges of multiple first mesh electrode lines of the first respective one of the plurality of first touch electrodes, and a second boundary of the first gap is formed by virtually connecting outer edges of multiple second mesh electrode lines of the second respective one of the plurality of second touch electrodes; a third boundary of the second gap is formed by virtually connecting outer edges of multiple first mesh electrode lines of the third respective one of the plurality of first touch electrodes, and a fourth boundary of the second gap is formed by virtually connecting outer edges of multiple second mesh electrode lines of the fourth respective one of the plurality of second touch electrodes; the first gap width is a first shortest distance between the first boundary and the second boundary; and the second gap width is a second shortest distance between the third boundary and the fourth boundary.
The following drawings are merely examples for illustrative purposes according to various disclosed embodiments and are not intended to limit the scope of the present invention.
The disclosure will now be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of some embodiments are presented herein for purpose of illustration and description only. It is not intended to be exhaustive or to be limited to the precise form disclosed.
The present disclosure provides, inter alia, a display panel, a display apparatus, and a method of fabricating a display panel that substantially obviate one or more of the problems due to limitations and disadvantages of the related art. In one aspect, the present disclosure provides a display panel having an array substrate and a counter substrate assembled together. In some embodiments, the display panel has a display region configured to display an image, a first window region, a second window region, and an inter-window region between the first window region and the second window region. The display panel has a first hole in the first window region and a second hole in the second window region. The inter-window region is directly adjacent to the first window region and directly adjacent to the second window region. The display panel includes a touch electrode layer in the display region and in the inter-window region, the touch electrode layer including a plurality of first touch electrodes and a plurality of second touch electrodes. Optionally, in the inter-window region, a first respective one of the plurality of first touch electrodes and a second respective one of the plurality of second touch electrodes directly adjacent to each other are spaced apart by a first gap having a first gap width. Optionally, in the display region, a third respective one of the plurality of first touch electrodes and a fourth respective one of the plurality of second touch electrodes directly adjacent to each other are spaced apart by a second gap having a second gap width. Optionally, the first gap width is greater than the second gap width.
The inter-window region is a small region between two window regions. In encapsulating the display panel, the encapsulating layer in the inter-window region is typically formed unevenly, resulting in an uneven surface. When forming the touch electrode layer in the inter-window region using related techniques, due to the uneven surface underneath, adjacent touch electrodes (particularly mesh electrode lines from adjacent touch electrodes) are prone to short and various other issues. However, the present disclosure adopts a novel and advantageous touch electrode design that obviate these issues.
As used herein, the term “display region” refers to an area of a display panel where image is actually displayed. Optionally, the display region may include both a subpixel region and an inter-subpixel region. A subpixel region refers to a light emission region of a subpixel, such as a region corresponding to a pixel electrode in a liquid crystal display or a region corresponding to a light emissive layer in an organic light emitting diode display panel. An inter-subpixel region refers to a region between adjacent subpixel regions, such as a region corresponding to a black matrix in a liquid crystal display or a region corresponding a pixel definition layer in an organic light emitting diode display panel. Optionally, the inter-subpixel region is a region between adjacent subpixel regions in a same pixel. Optionally, the inter-subpixel region is a region between two adjacent subpixel regions from two adjacent pixels.
Referring to
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In some embodiments, display elements and thin film transistors are absent in the first window region WR1 and the second window region WR2. Optionally, the display elements includes a plurality or light emitting diodes, for example, in an organic light emitting diode display panel. Optionally, the display elements include a liquid crystal layer in a plurality of subpixels, for example, in a liquid crystal display panel. Referring to
Referring to
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Optionally, the inter-window region IWR is capable of displaying an image. In one example, the display panel in the inter-window region IWR includes one or more light emitting elements. In another example, the display panel in the inter-window region IWR includes one or more thin film transistors.
Optionally, the inter-window region IWR is incapable of displaying an image. In one example, the plurality of light emitting elements LE are absent in the inter-window region IWR. In another example, the plurality or thin film transistors TFT are absent in the inter-window region IWR.
Referring to
Optionally, the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2 are in a same layer.
Optionally, the plurality or first touch electrodes TE1 and the plurality of second touch electrodes TE2 are in different layers.
Optionally, the plurality of first touch electrodes TE1, the plurality of second touch electrodes TE2, and the first electrode bridge BR1 are in a same layer. Optionally, the plurality of second electrode bridges BR2 are on a side of the touch insulating layer TI away from the buffer layer BUF. Optionally, the plurality of first touch electrodes TE1, the plurality of second touch electrodes TE2, and the first electrode bridge BR1 are on a side of the touch insulating layer TI away from the plurality of second electrode bridges BR2.
Optionally, a first region boundary RB1 of the inter-window region IWR on the first side S1 does not exceed a first outer boundary O1 of the first window region WR1 directly adjacent to the inter-window region IWR. In one example, the first region boundary RB1 of the inter-window region IWR on the first side S1 is between the first outer boundary O1 of the first window region WR1 directly adjacent to the inter-window region IWR and a second outer boundary O2 of the second window region WR2 directly adjacent to the inter-window region IWR. In another example, the first region boundary RB1 of the inter-window region IWR on the first side S1 at least partially or completely overlaps with the first outer boundary O1 of the first window region WR1 directly adjacent to the inter-window region IWR. In another example, the first region boundary RB1 of the inter-window region IWR on the first side S1 is non-overlapping with the first outer boundary O1 of the first window region WR1 directly adjacent to the inter-window region IWR.
Optionally, a second region boundary RB2 of the inter-window region IWR on the second side S2 does not exceed a second outer boundary O2 of the second window region WR2 directly adjacent to the inter-window region IWR. In one example, the second region boundary RB2 of the inter-window region IWR on the second side S2 is between the first outer boundary O1 of the first window region WR1 directly adjacent to the inter-window region IWR and the second outer boundary O2 or the second window region WR2 directly adjacent to the inter-window region IWR. In another example, the second region boundary RB2 of the inter-window region IWR on the second side S2 at least partially or completely overlaps with the second outer boundary O2 of the second window region WR2 directly adjacent to the inter-window region IWR. In another example, the second region boundary RB2 of the inter-window region IWR on the second side S2 is non-overlapping with the second outer boundary O2 of the second window region WR2 directly adjacent to the inter-window region IWR.
Optionally, a third region boundary RB3 of the inter-window region IWR on the third side S3 does not exceed a first imaginary connecting line C1 virtually connecting outer edges of the first window region WR1 and the second window region WR2 on the third side S3.
Optionally, a fourth boundary RB4 of the inter-window region IWR on the fourth side S4 does not exceed a second imaginary connecting line C2 virtually connecting outer edges of the first window region WR1 and the second window region WR2 on the fourth side S4.
In one example, the third region boundary RB3 of the inter-window region IWR on the third side S3 is between the first imaginary connecting line C1 and the second imaginary connecting line C2. In another example, the third region boundary RB3 of the inter-window region IWR on the third side S3 at least partially or completely overlaps with the first imaginary connecting line C1. In another example, the third region boundary RB3 of the inter-window region IWR on the third side S3 is non-overlapping with the first imaginary connecting line C1.
In one example, the fourth boundary RB4 of the inter-window region IWR on the third side S3 is between the first imaginary connecting line C1 and the second imaginary connecting line C2. In another example, the fourth boundary RB4 of the inter-window region IWR on the third side S3 at least partially or completely overlaps with the second imaginary connecting line C2. In another example, the fourth boundary RB4 of the inter-window region IWR on the third side S3 is non-overlapping with the second imaginary connecting line C2.
In some embodiments, the display panel, in the region transitioning from the display region DR to the window region WR, includes a barrier structure DAM completely surrounding a hole H (the first hole H1 or the second hole H2). In some embodiment, the barrier structure DAM includes a first barrier layer BL1 and a second barrier layer BL2 sequentially surrounding the hole H. Optionally, the first barrier layer BL1 includes a first barrier sub-layer BL1-1 and a second barrier sub-layer BL1-2. Optionally, the second barrier layer BL2 includes a third barrier sub-layer BL2-1 and a fourth barrier sub-layer BL2-2. Optionally, the first barrier sub-layer BL1-1 and the third barrier sub-layer BL2-1 are in a same layer and formed in a single patterning process. Optionally, the second barrier sub-layer BL1-2 and the fourth barrier sub-layer BL2-2 are in a same layer and formed in a single patterning process. Optionally, the first barrier sub-layer BL1-1 has a thickness less than a thickness of the third barrier sub-layer BL2-1. Optionally, the first barrier sub-layer BL1-1, the third barrier sub-layer BL2-1 and the planarization layer PLN, are in a same layer and formed in a single patterning process. Optionally, the second barrier sub-layer BL1-2, the fourth barrier sub-layer BL2-2, and the pixel definition layer PDL are in a same layer and formed in a single patterning process.
In some embodiments, the display panel, in the region transitioning from the display region DR to the window region WR, further includes a spacer layer SL (as shown in
In some embodiments, the first barrier layer BL1 only includes the second barrier sub-layer BL1-2 but does not include the first barrier sub-layer BL1-1.
In some embodiments, the display panel further includes a plurality of internal isolation walls IWi in a region between the barrier structure DAM and the display region DA. A respective one of the plurality of internal isolation walls IWi includes a first internal wall sub-layer IWi-1 and a second internal wall sub-layer IWi-2. Optionally, the first internal wall sub-layer IWi-1 is a part of the second SD metal layer SD2. Optionally, the second internal wall sub-layer IWi-2 is in a same layer as, and optionally formed in a single patterning process as, the cathode layer CD. Optionally, a total number of the plurality of internal isolation walls Iwi is in a range of 2 to 6, e.g., 2, 3, 4, 5, or 6.
In some embodiments, the display panel further includes a plurality of external isolation walls IWe in a region between the barrier structure DAM and the window region WR. A respective one of the plurality of external isolation walls IWe includes a first external wall sub-layer IWe-1, a second external wall sub-layer IWe-2, a third external wall sub-layer IWe-3, and a fourth external wall sub-layer IWe-4. Optionally, the first external wall sub-layer IWe-1 is a part of the first gate metal layer GM1. Optionally, the second external wall sub-layer IWe-2 is a part of the second gate metal layer GM2. Optionally, the third external wall sub-layer IWe-3 is a part of the second SD metal layer SD2. Optionally, the fourth external wall sub-layer IWe-4 is in a same layer as, and optionally formed in a single patterning process as, the cathode layer CD. Optionally, a total number of the plurality of external isolation walls IWe is in a range of 2 to 8, e.g., 2, 3, 4, 5, 6, 7, or 8.
In some embodiments, the display panel further includes a plurality of first signal lines SL1 and a plurality of second signal lines SL2 in the region transitioning from the display region DR to the window region WR. The plurality of first signal lines SL1 and the plurality of second signal lines SL2 are on a side of the plurality of internal isolation walls IWi away from the barrier structure DAM. Optionally, the plurality of first signal lines SL1 are in a same layer as the second gate metal layer GM2. Optionally, the plurality of second signal lines SL2 are in a same layer as the second SD metal layer SD2. In some embodiments, the display panel, in the region transitioning from the display region DR to the window region WR, further includes a plurality of third signal lines in a same layer as the first gate metal layer GM1.
Optionally, the first gap width d1 is greater than the second gap width d2. Optionally, the first gap width d1 is greater than the second gap width d2 by at least 20%, e.g., by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 80%, by at least 90%, by at least 100% by at least 110%, by at least 120%, by at least 130%, by at least 140%, by at least 150%, by at least 160%, by at least 170%, by at least 180%, by at least 190%, by at least 200%, by at least 225% by at least 250%, or by at least 300%. Optionally, the first gap width d1 is in a range of 5 μm to 50 μm, e.g., 5 μm to 10 μm, 10 μm to 15 μm, 15 μm to 20 μm, 20 μm to 25 μm, 25 μm to 30 μm, 30 μm to 35 μm, 35 μm to 40 μm, 40 μm to 45 μm, or 45 μm to 50 μm. Optionally, the second gap width d2 is in a range of 1 μm to 10 μm, e.g., 1 μm to 2 μm, 2 μm to 3 μm, 3 μm to 4 μm, 4 μm to 5 μm, 5 μm to 6 μm, 6 μm to 7 μm, 7 μm to 8 μm, 8 μm to 9 μm, or 9 μm to 10 μm. In one example, the first gap width d1 is approximately 10 μm, and the second gap width d2 is approximately 5.2 μm.
In some embodiments, the display panel further includes a plurality of fill patterns in a same layer as the plurality of first touch electrodes or as the plurality of second touch electrodes. The plurality of fill patterns are insulated from the plurality of first touch electrodes and the plurality of second touch electrodes.
As used herein, the term “same layer” refers to the relationship between the layers simultaneously formed in the same step. In one example, the plurality of fill patterns DE and the plurality of first touch electrodes TE1 are in a same layer when they are formed as a result of one or more steps of a same patterning process performed in a material deposited in a same deposition process. In another example, the plurality of fill patterns DE and the plurality of first touch electrodes TE1 can be formed in a same layer by simultaneously performing the step of forming the plurality of fill patterns DE and the step of forming the plurality of first touch electrodes TE1. The term “same layer” does not always mean that the thickness of the layer or the height of the layer in a cross-sectional view is the same.
In some embodiments, as shown in
In some embodiments, the display panel further includes a plurality of blanking mesh breaks. As used herein, the term “blanking mesh break” refers to a break in a mesh electrode line in an individual mesh electrode block (i.e., not a gap separating adjacent mesh electrode blocks) for achieving an excellent blanking effect in the display panel. Mesh electrode lines are otherwise inter-connected elsewhere in the individual mesh electrode block except for positions having the plurality of blanking mesh breaks.
Optionally, both the plurality of fill patterns DE and the plurality of blanking mesh breaks BMR are limited in mesh electrode blocks in the display region DA; and both the plurality of fill patterns DE and the plurality of blanking mesh breaks BMR are absent in the inter-window region IWR, the first window region WR1, and the second window region WR2.
Optionally, the plurality of blanking mesh breaks BMR are randomly distributed in the display region DA. The plurality of blanking mesh breaks BMR themselves do not form a pattern so that an excellent blanking effect can be achieved. For example, the plurality of blanking mesh breaks BMR do not have a repeating pattern, and do not have rotational or translational symmetry between mesh electrode blocks.
In some embodiments, portion gap widths of portion gaps of the first gap along each orientation are greater than portion gap widths of portion gaps of the second gap along a same respective orientation. Optionally, a portion gap width of a portion gap of the first gap along a first orientation is greater than a portion gap width of a portion gap of the second gap along the first orientation, and a portion gap width of a portion gap of the first gap along a second orientation is greater than a portion gap width of a portion gap of the second gap along the second orientation. In one example, and referring to
In some embodiments, the term “the first gap width is greater than the second gap width” means that a smallest portion gap width (e.g., the second portion gap width d1-2) in the first gap is greater than a smallest portion gap width (e.g., the fourth portion gap width d2-2) in the second gap G2. Optionally, the smallest portion gap width in the first gap is greater than the smallest portion gap width in the second gap by at least 20%, e.g., by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 80%, by at least 90%, by at least 100%, by at least 110%, by at least 120%, by at least 130%, by at least 140%, by at least 150%, by at least 160%, by at least 170%, by at least 180%, by at least 190%, by at least 200%, by at least 225%, by at least 250%, or by at least 300%.
In some embodiments, the term “the first gap width is greater than the second gap width” means that a smallest portion gap width (e.g., the second portion gap width d1-2) in the first gap is greater than a smallest portion gap width (e.g., the fourth portion gap width d2-2) in the second gap G2; and that a largest portion gap width (e.g., the first portion gap width d1-1) in the first gap is greater than a largest portion gap width (e.g., the third portion gap width d2-1) in the second gap G2. Optionally, the smallest portion gap width in the first gap is greater than the smallest portion gap width in the second gap by at least 20%, e.g., by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 80%, by at least 90%, by at least 100%, by at least 110%, by at least 120%, by at least 130%, by at least 140%, by at least 150%, by at least 160%, by at least 170%, by at least 180%, by at least 190%, by at least 200%, by at least 225%, by at least 250%, or by at least 300%; and the largest portion gap width in the first gap is greater than the largest portion gap width in the second gap by at least 20%, e.g., by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 80%, by at least 90%, by at least 100%, by at least 110%, by at least 120%, by at least 130%, by at least 140%, by at least 150%, by at least 160%, by at least 170%, by at least 180%, by at least 190%, by at least 200%, by at least 225%, by at least 250%, or by at least 300%.
In some embodiments, the term “the first gap width is greater than the second gap width” means that a smallest portion gap width (e.g., the second portion gap width d1-2) in the first gap is greater than any portion gap width (e.g., the third portion gap width d2-1 or the fourth portion gap width d2-2) in the second gap G2. Optionally, the smallest portion gap width in the first gap is greater than any portion gap width in the second gap by at least 20%, e.g., by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 80%, by at least 90%, by at least 100%, by at least 110%, in at least 120%, by at least 130%, by at least 140%, by at least 150%, by at least 160%, by at least 170%, by at least 180%, by at least 190%, by at least 200%, by at least 225%, by at least 250%, or by at least 300%.
In some embodiments, the term “the first gap width is greater than the second gap width” means that an average portion gap width (e.g., an average of the first portion gap width d1-1 and the second portion gap width d1-2) in the first gap is greater than an average gap width (e.g., an average of the third portion gap width d2-1 and the fourth portion gap width d2-2) in the second gap G2. Optionally, the average portion gap width in the first gap is greater than the average portion gap width in the second gap by at least 20%, e.g., by at least 30%, by at least 40%, by at least 50%, by at least 60%, by at least 70%, by at least 80%, by at least 90%, by at least 100%, by at least 110%, by at least 120%, by at least 130%, by at least 140%, by at least 150%, by at least 160%, by at least 170%, by at least 180%, by at least 190%, by at least 200%, by at least 225%, by at least 250%, or by at least 300%.
Referring to
Referring to
Referring to
In another aspect, the present disclosure provides a method of fabricating a display panel having an array substrate and a counter substrate assembled together. In some embodiments, the method includes forming a first hole in a first window region; and forming a second hole in a second window region. The display panel is formed to have a display region configured to display an image, the first window region, the second window region, and an inter-window region between the first window region and the second window region. The inter-window region is directly adjacent to the first window region and directly adjacent to the second window region. Optionally, the method further includes forming a touch electrode layer in the display region and in the inter-window region. Optionally, forming the touch electrode layer includes forming a plurality of first touch electrodes and forming a plurality of second touch electrodes. Optionally, forming the touch electrode layer includes forming a first gap having a first gap width in the inter-window region to space apart a first respective one of the plurality of first touch electrodes and a second respective one of the plurality of second touch electrodes directly adjacent to each other and in the inter-window region; and forming a second gap having a second gap width in the display region to space apart a third respective one of the plurality of first ouch electrodes and a fourth respective one of the plurality of second touch electrodes directly adjacent to each other and in the display region. Optionally, the first gap width is greater than the second gap width.
Referring to
By forming the first hole H1 and the second hole H2, the touch electrode layer, the thin film transistors, and the display elements are removed from the first window region WR1 and the second window region WR2. Optionally, the encapsulating layer EN, the buffer layer BUF, and the touch insulating layer TI are also absent in the first window region WR1 and absent in the second window region WR2.
Accordingly, the touch electrode layer is formed in the display region DA and in the inter-window region IWR. Referring to
In some embodiments, the step of forming the touch electrode layer includes forming a touch electrode material layer, and patterning the touch electrode material layer to form the plurality of first touch electrodes TE1 and the plurality of second touch electrodes TE2. In some embodiments, the step of patterning the touch electrode material layer includes forming a first gap G1 having a first gap width d1 in the inter-window region IWR to space apart a first respective one of the plurality of first touch electrodes TE1 and a second respective one of the plurality of second touch electrodes TE2 directly adjacent to each other and in the inter-window region IWR; and forming a second gap G2 having a second gap width d2 in the display region DA to space apart a third respective one of the plurality of first touch electrodes TE1 and a fourth respective one of the plurality of second touch electrodes TE2 directly adjacent to each other and in the display region DA. Optionally, the first gap width d1 is greater than the second gap width d2.
In some embodiments, and referring to
In some embodiments, the plurality of first touch electrodes and the plurality of second touch electrodes are formed as mesh electrodes comprising mesh electrode lines. Various appropriate conductive electrode materials and various appropriate fabricating methods may be used to make the touch electrode layer. For example, a conductive electrode material may be deposited on the substrate, e.g., by sputtering or vapor deposition or solution coating; and patterned. Examples of conductive electrode materials for making the mesh electrode pattern of the touch electrode layer include, but are not limited to, a metal mesh, a silver nano wire, a carbon nano tube, a nano mesh, graphene, and conductive polymers such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). Optionally, the mesh electrode pattern is made of a metal mesh such as a nano-silver mesh.
Optionally, multiple mesh electrode lines directly adjacent to the first sub-gap SG1 have a line width greater than multiple mesh electrode lines directly adjacent to the second sub-gap SG2, as shown in
In some embodiments, and referring to
In some embodiments, and referring to
In some embodiments, and referring to
In some embodiments, and referring to
In some embodiments, and referring to
In another aspect, the present disclosure provides a display apparatus including a display panel described herein or fabricated by a method described herein, and one or more integrated circuits connected to the display panel. Examples of appropriate display apparatuses include, but are not limited to, an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital album, a GPS, etc. Optionally, the display apparatus is an organic light-emitting diode display apparatus. Optionally, the display apparatus is a liquid crystal display apparatus.
The foregoing description of the embodiments of the invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or to exemplary embodiments disclosed. Accordingly, the foregoing description should be regarded as illustrative rather than restrictive. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. The embodiments are chosen and described in order to explain the principles of the invention and its best mode practical application, thereby to enable persons skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents in which all terms are meant in their broadest reasonable sense unless otherwise indicated. Therefore, the term “the invention”, “the present invention” or the like does not necessarily limit the claim scope to a specific embodiment, and the reference to exemplary embodiments of the invention does not imply a limitation on the invention, and no such limitation is to be inferred. The invention is limited only by the spirit and scope of the appended claims. Moreover, these claims may refer to use “first”, “second”, etc. following with noun or element. Such terms should be understood as a nomenclature and should not be construed as giving the limitation on the number of the elements modified by such nomenclature unless specific number has been given. Any advantages and benefits described may not apply to all embodiments of the invention. It should be appreciated that variations may be made in the embodiments described by persons skilled in the art without departing from the scope of the present invention as defined by the following claims. Moreover, no element and component in the present disclosure is intended to be dedicated to the public regardless of whether the element or component is explicitly recited in the following claims.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2020/107770 | 8/7/2020 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2022/027575 | 2/10/2022 | WO | A |
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| Number | Date | Country | |
|---|---|---|---|
| 20220317794 A1 | Oct 2022 | US |
