Patent Application
20220310724
The present disclosure relates to the field of display technology and, in particular to a display device, a display panel, and a manufacturing method of the display panel.
In various electronic devices, such as mobile phones and tablet computers, it is often necessary to open holes in the display panel to install electronic devices such as cameras and sensors. For OLED (Organic Light-Emitting Diode) display panels, external water and oxygen may enter the interior of the display panel from the opening position along the light emitting layer, causing erosion to the interior of the display panel. However, there is a need to improve the effect of preventing water and oxygen erosion of the existing display panels, which will affect the display effect.
It should be noted that the information disclosed in the background mentioned above is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to those of ordinary skill in the art.
A purpose of the present disclosure is to provide a display device, a display panel, and a manufacturing method thereof.
According to an aspect of the present disclosure, there is provided a display panel comprising:
a substrate which has an opening area, a transition area surrounding the opening area, and a display area surrounding the transition area;
a drive layer which is provided on a side of the substrate and covers the display area and the transition area, wherein a portion of the drive layer located in the transition area comprises a light reflective layer surrounding the opening area;
an isolation column which is arranged on a surface of the drive layer facing away from the substrate and is located in the transition area, wherein the isolation column surrounds the opening area, and a contour line of a projection of the isolation column on the substrate is located inside a contour line of a projection of the light reflective layer on the substrate; and a side wall of the isolation column is provided with a groove;
a light emitting device layer which covers the drive layer and the isolation column, wherein the light emitting device layer comprises a light emitting layer, and the light emitting layer is discontinuous at the groove;
a through hole which penetrates the drive layer and the light emitting device layer and is located in the opening area.
In an exemplary embodiment of the present disclosure, the drive layer is formed with a boss in an area of the drive layer corresponding to the light reflective layer, the boss matches a shape of the light reflective layer, and the isolation column is provided on a surface of the boss facing away from the substrate.
In an exemplary embodiment of the present disclosure, in a direction perpendicular to the substrate, a portion of the drive layer corresponding to the isolation column has a plurality of the light reflective layers.
In an exemplary embodiment of the present disclosure, in two adjacent light reflective layers in the direction perpendicular to the substrate, a contour line of a projection of the light reflective layer facing away from the substrate on the substrate is located inside a contour line of a projection of the light reflective layer close to the substrate on the substrate.
In an exemplary embodiment of the present disclosure, a distance between the contour line of the projection of the light reflective layer on the substrate and the contour line of the projection of the isolation column on the substrate is greater than 1 μm.
In an exemplary embodiment of the present disclosure, the number of the isolation columns is multiple, and each of the isolation columns is arranged concentrically around the opening area;
in the direction perpendicular to the substrate, a portion of the drive layer corresponding to each of the isolation columns has a plurality of the light reflective layers.
In an exemplary embodiment of the present disclosure, in the direction perpendicular to the substrate, a portion of the drive layer corresponding to the isolation column has two light reflective layers;
the drive layer comprises a thin film transistor and a capacitor electrode in the display area, and a gate of the thin film transistor and the capacitor electrode form a storage capacitor;
the gate and one of the light reflective layers are arranged in a same layer, the capacitor electrode and another light reflective layer are arranged in a same layer, and a source and a drain of the thin film transistor and the isolation column are arranged in a same layer.
In an exemplary embodiment of the present disclosure, the isolation column comprises a first metal layer, a second metal layer and a third metal layer that are sequentially stacked in a direction away from the substrate, and an outer edge of the first metal layer and an outer edge of the third metal layer protrude out of an outer edge of the second metal layer so as to form the groove on a side wall of the isolation column; at least one of the first metal layer, the second metal layer and the third metal layer comprises a reflective metal material.
In an exemplary embodiment of the present disclosure, a material of the first metal layer and the third metal layer comprises titanium, and a material of the second metal layer comprises aluminum.
In an aspect of the disclosure, there is provided a manufacturing method for a display panel, comprising:
providing a substrate, wherein the substrate has an opening area, a transition area surrounding the opening area, and a display area surrounding the transition area;
forming a drive layer covering both the display area and the transition area on a side of the substrate, wherein a portion of the drive layer located in the transition area comprises a light reflective layer surrounding the opening area;
forming an isolation column, which is located in the transition area and surrounds the opening area, on a surface of the drive layer facing away from the substrate, wherein a contour line of a projection of the isolation column on the substrate is located inside a contour line of a projection of the light reflective layer on the substrate; and a side wall of the isolation column is provided with a groove;
forming a light emitting device layer which covers the drive layer and the isolation column, wherein the light emitting device layer comprises a light emitting layer, and the light emitting layer is discontinuous at the groove;
forming a through hole in the opening area, wherein the through hole penetrates the drive layer and the light emitting device layer.
In an exemplary embodiment of the present disclosure, in a direction perpendicular to the substrate, a portion of the drive layer corresponding to the isolation column has a plurality of the light reflective layers.
In an exemplary embodiment of the present disclosure, in a direction perpendicular to the substrate, a portion of the drive layer corresponding to the isolation column has a first light reflective layer and a second light reflective layer;
forming the drive layer covering both the display area and the transition area on the side of the substrate comprises:
forming an active layer in the display area on a side of the substrate;
forming a gate insulating layer covering the active layer;
forming a gate located in the display area and a first light reflective layer located in the transition area, through one patterning process, on a side of the gate insulating layer facing away from the substrate;
forming an insulating layer covering both the gate and the first light reflective layer;
forming a capacitor electrode directly facing the gate and a second light reflective layer directly facing the first light reflective layer, through one patterning process, on a surface of the insulating layer facing away from the substrate;
forming a dielectric layer covering both the capacitor electrode and the second light reflective layer, and the dielectric layer being formed with a boss in an area corresponding to the second light reflective layer;
forming a source-drain layer on a side of the dielectric layer facing away from the substrate, and the source-drain layer comprising a source and a drain connected to the active layer.
In an exemplary embodiment of the present disclosure, the isolation column and the source-drain layer are formed by one same patterning process, and the isolation column is located on a surface of the boss facing away from the substrate.
In an aspect of the disclosure, there is provided a display device comprising the display panel according to any one of above items.
It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure.
The drawings herein are incorporated into the specification and constitute a part of the specification, show embodiments in accordance with the present disclosure, and are used to explain the principle of the present disclosure together with the specification. Understandably, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments may be implemented in various forms, and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided to make the present disclosure more comprehensive and complete, and fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the figures indicate the same or similar structures, and thus their detailed descriptions will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure, and are not necessarily drawn to scale.
Although relative terms such as “upper” and “lower” are used in this specification to describe the relative relationship between labeled one component and another component, these terms are used in this specification only for convenience, for example, exemplary directions as shown according to the drawings. It may be understood that if the labeled device is turned over and turned upside down, the component described as “upper” will become the “lower” component. When a structure is “on” another structure, it may mean that a certain structure is integrally formed on other structures, or that a certain structure is “directly” arranged on other structures, or that a certain structure is “indirectly” arranged on other structures through another structure.
The terms “a”, “an”, “the”, and “said” are used to indicate the presence of one or more elements/components/etc.; the terms “include” and “comprise” are used to mean open-ended inclusion and means that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms “first”, “second”, and “third” are only used as marks, not limit the number of its objects.
Descriptions of the reference signs used in the figures are as follows: 100: display panel; 1: substrate; 101: opening area; 102: transition area; 103: display area; 2: drive layer; 201: light reflective layer; 201a: first light reflective layer; 201b: second light reflective layer; 202: boss; 21: active layer; 22: gate insulation layer; 23: gate; 24: insulation layer; 25: capacitor electrode; 26: dielectric layer; 27: source; 28: drain; 3: isolation column; 301: groove; 31: first metal layer; 32: second metal layer; 33: third metal layer; 3a: first isolation column; 3b: second isolation column; 4: light emitting device layer; 401: light emitting layer; 402: first electrode; 403: second electrode; 5: through hole; 6: planarization layer; 7: pixel defining layer; and 8: filling layer.
In the related art, the display panel has a display area, a transition area, and an opening area. The transition area surrounds the opening area, and the display area surrounds the transition area. The opening area can be provided with through holes for setting cameras and other devices. As shown in
In addition, in order to ensure the effect of blocking the light emitting layer, grooves 31a are also provided on both sides of the isolation column 3a to further block the light emitting layer, but the drive layer 2a needs to be grooved which increases the difficulty of the process.
Embodiments of the present disclosure provide a display panel, which may be an OLED display panel, and may be provided with a through hole for installing a camera or another device The through hole may be surrounded by a transition area, and the transition area may be surrounded by a display area that can emit light.
As shown in
The substrate 1 has an opening area 101, a transition area 102 surrounding the opening area 101, and a display area 103 surrounding the transition area 102.
The drive layer 2 is provided on a side of the substrate 1 and covers the display area 103 and the transition area 102. A portion of the drive layer 2 located in the transition area 102 includes a light reflective layer 201 surrounding the opening area 101.
The isolation column 3 is provided on a surface of the drive layer 2 facing away from the substrate 1 and is located in the transition area 102. The isolation column 3 surrounds the opening area 101. A contour line of a projection of the isolation column 3 on the substrate 1 is located inside a contour line of a projection of the light reflective layer 201 on the substrate 1, and a side wall of the isolation column 3 is provided with a groove 301.
The light emitting device layer 4 covers the drive layer 2 and the isolation column 3. The light emitting device layer 4 includes a light emitting layer 401, and the light emitting layer 401 is discontinuous at the groove 301.
The through hole 5 penetrates the drive layer 2 and the light emitting device layer 4 and is located in the opening area 101.
In the display panel of the embodiment of the present disclosure, the light emitting layer 401 of the light emitting device layer 4 is partitioned by the groove 301, blocking a path of water and oxygen at the through hole 5 eroding the display area 103, thereby preventing the light emitting device layer 4 of the display area 103 from being eroded. At the same time, since the contour line of the projection of the isolation column 3 on the substrate 1 is located inside the contour line of the projection of the light reflective layer 201 on the substrate 1, an edge of the light reflective layer 201 exceeds an edge of the isolation column 3, and the excess part can reflect light in a direction away from the substrate 1, so that the groove 301 on the side wall of the isolation column 3 can be illuminated by light, preventing the groove 301 from being filled with residual photoresist, thereby ensuring that the groove 301 can partition the light emitting layer 401 and the isolation column 3 can block the path of water and oxygen erosion for improving the display effect. In addition, since the blocking effect on the light emitting layer 401 is improved, it is possible to avoid from setting up a special partition groove for partitioning the light emitting layer 401 at the positions of the drive layer 2 located on both sides of the isolation column 3.
Hereinafter, each part of the display panel 100 of the embodiment of the present disclosure will be described in detail.
As shown in
The substrate 1 may be a single-layer or multi-layer structure. For example, the substrate 1 may include a glass substrate and a buffer layer on the glass substrate, and the material of the buffer layer may include silicon nitride, silicon oxide, and the like.
As shown in
As shown in
The contour line of the projection of the isolation column 3 on the substrate 1 is located inside the contour line of the projection of the light reflective layer 201 on the substrate 1, so that the edge of the light reflective layer 201 extends beyond the edge of the isolation column 3, and the excess part can reflect light to a side facing away from the substrate 1, wherein at least part of the light can be reflected into the groove 301. If the photoresist is a positive photoresist, the light reflected by the light reflective layer 201 may expose the photoresist in the groove 301 for development so as to remove the photoresist and prevent the remaining photoresist from filling the groove 301, ensuring that the light emitting layer 401 is discontinuous at the groove 301.
In some embodiments of the present disclosure, as shown in
Further, as shown in
Further, in order to improve the light reflection effect, as shown in
In some embodiments of the present disclosure, as shown in
In some embodiments of the present disclosure, as shown in
Further, in the direction perpendicular to the substrate 1, a portion of the drive layer 2 corresponding to each isolation column 3 has a plurality of the light reflective layers 201. That is, a side of each isolation column 3 close to the substrate 1 has a plurality of the light reflective layers 201, for example, two light reflective layers 201.
Of course, in other embodiments of the present disclosure, as shown in
In some embodiments of the present disclosure, as shown in
The gate of the thin film transistor and one light reflective layer 201 are arranged in the same layer, so that the two light reflective layers 201 can be formed at the same time as the gate and the capacitor electrode of the thin film transistor, respectively, thereby simplifying the process. At the same time, a source and a drain of the thin film transistor and the isolation column 3 are arranged in the same layer, so that the source, the drain, and the isolation column 3 may be formed at the same time, thereby simplifying the process.
For example, as shown in
A portion of the drive layer 2 corresponding to the same isolation column 3 also has two light reflective layers 201, including a first light reflective layer 201a and a second light reflective layer 201b. The gate 23 and the first light reflective layer 201a are arranged in a same layer, and the capacitor electrode 25 and the second light reflective layer 201b are arranged in a same layer. The first light reflective layer 201a and the second light reflective layer 201b are separated by the stacked gate insulating layer 22 and the insulating layer 24. At the same time, the source-drain layer and the isolation column 3 are arranged in a same layer so as to be formed by one patterning process.
In some embodiments of the present disclosure, as shown in
At least one of the first metal layer 31, the second metal layer 32 and the third metal layer 33 includes a reflective metal material, so as to achieve light reflection. For example, the material of the first metal layer 31 and the third metal layer 33 includes titanium, and the material of the second metal layer 32 includes aluminum.
The source 27 and the drain 28 each may also include three metal layers, which are arranged in same layers corresponding to the first metal layer 31, the second metal layer 32 and the third metal layer 33 one by one so as to be formed at the same time.
As shown in
In some embodiments of the present disclosure, as shown in
As shown in
The embodiments of the present disclosure provide a manufacturing method for a display panel. For the structure of the display panel, the above-mentioned display panel embodiments can be referred to and will not be described in detail here. As shown in
Step S110: providing a substrate, wherein the substrate has an opening area, a transition area surrounding the opening area, and a display area surrounding the transition area;
Step S120: forming a drive layer, which covers the display area and the transition area, on a side of the substrate, wherein a portion of the drive layer located in the transition area comprises a light reflective layer surrounding the opening area;
Step S130: forming an isolation column, which is located in the transition area and surrounds the opening area, on a surface of the drive layer facing away from the substrate, wherein a contour line of a projection of the isolation column on the substrate is located inside a contour line of a projection of the light reflective layer on the substrate; and a side wall of the isolation column is provided with a groove;
Step S140: forming a light emitting device layer which covers the drive layer and the isolation column, wherein the light emitting device layer comprises a light emitting layer, and the light emitting layer is discontinuous at the groove;
Step S150: forming a through hole which penetrates the drive layer and the light emitting device layer in the opening area.
The specific structures and beneficial effects of the substrate, the drive layer, the isolation column, the light emitting device layer and the through hole in the manufacturing method of the embodiment of the present disclosure have been described in the embodiments of the display panel above, and will not be repeated here.
In some embodiments of the present disclosure, as shown in
Forming the drive layer, which covers the display area and the transition area, on the side of the substrate (that is, step S120) includes step S1210-step S1270, wherein:
Step S1210, forming an active layer in the display area on a side of the substrate;
Step S1220, forming a gate insulating layer covering the active layer;
Step S1230, forming a gate located in the display area and a first light reflective layer located in the transition area, through one patterning process, on a side of the gate insulating layer facing away from the substrate;
Step S1240, forming an insulating layer covering both the gate and the first light reflective layer;
Step S1250, forming a capacitor electrode directly facing the gate and a second light reflective layer directly facing the first light reflective layer, through one patterning process, on a surface of the insulating layer facing away from the substrate;
Step S1260, forming a dielectric layer covering both the capacitor electrode and the second light reflective layer, and the dielectric layer being formed with a boss in an area corresponding to the second light reflective layer;
Step S1270, forming a source-drain layer on a side of the dielectric layer facing away from the substrate, and the source-drain layer comprising a source and a drain connected to the active layer.
As shown in
Of course, in other embodiments of the present disclosure, the isolation column 3 and the source-drain layer can also be formed independently. For details of the display panel manufactured by the manufacturing method of the embodiment of the present disclosure, reference may be made to the embodiment of the display panel, which will not be repeated here.
It should be noted that although the various steps of the method in the present disclosure are described in a specific order in the drawings, this does not require or imply that these steps must be performed in the specific order, or that all the steps shown must be performed to achieve the desired result. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step for execution, and/or one step may be decomposed into multiple steps for execution, etc.
The embodiments of the present disclosure also provide a display device, which may include the display panel of any of the above-mentioned embodiments, and for its structure and beneficial effects, the above-mentioned embodiments of the display panel can be referred to and will not be described in detail here. The display device in the embodiments of the present disclosure may be a device for displaying images, such as a mobile phone, a tablet computer, or a television, which will not be listed here.
Those skilled in the art will easily think of other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptive changes of the present disclosure. These variations, uses or adaptive changes follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field that are not disclosed in the present disclosure. The description and the embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010104934.5 | Feb 2020 | CN | national |
The present application is a national phase application under 35 U.S.C. § 371 of International Application No. PCT/CN2021/071273 filed Jan. 12, 2021, which claims the benefit of and priority to Chinese Patent Application No. 202010104934.5 entitled “Display device, display panel and manufacturing method thereof,” filed on Feb. 20, 2020, where the contents of both of which are incorporated by reference in their entireties herein.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/071273 | 1/12/2021 | WO |
