Patent Application
20160026035
The present disclosure relates to a display device including a curved panel and a manufacturing method thereof.
Television devices installed with liquid crystal panels are widely spreading these days. Furthermore, in accompany with development of imaging technology, various contents with higher image quality have become available for viewing. Recently, television devices have been developed that are installed with curved panels configured of curved liquid crystal panels.
In the curved panel, a flat panel in which two substrates face each other is deformed into a curved shape. Accordingly, there may arise deviation in relative positional relation between structures on one substrate (e.g., a black matrix) and structures on the other substrate (e.g., color filters and data wirings), which may be possible causes of color unevenness and display unevenness.
To cope therewith, for example, Patent Literature 1 provides description that a horizontal width of the black matrix is varied between in both horizontal end portions of the substrate and in a center portion of the substrate.
Also, for example, Patent Literature 2 proposes that a pitch in a pixel region in a direction of curvature should be varied between the substrate on the inner side of the curvature and the substrate on the outer side of the curvature. Moreover, Patent Literature 2 explains that an amount of displacement in the pixel region generated due to the curvature varies in proportion to a coordinate in the direction of the curvature (specifically, in a lateral direction) of the liquid crystal panel.
In the display device including the curved panel, it is desired to lessen deviation in relative positional relation between structures on two substrates and to restrain color unevenness and display unevenness.
It is therefore desirable to provide a display device and a method of manufacturing the display device that make it possible to restrain color unevenness and display unevenness and to perform high quality display.
A display device according to an embodiment of the present disclosure includes a display panel. The display panel includes: a first substrate and a second substrate facing each other; a first structure provided on the first substrate; and a second structure provided on the second substrate. Relative positional relation between the first structure and the second structure is adjusted two-dimensionally in accordance with a non-planarity characteristic of the display panel.
In the display device according to the above-described embodiment of the present disclosure, the relative positional relation between the first structure on the first substrate and the second structure on the second substrate is adjusted two-dimensionally in accordance with the non-planarity characteristic of the display panel. Accordingly, deviation in the relative positional relation between the first structure and the second structure is reduced, and color unevenness and display unevenness is restrained.
A method of manufacturing a display device according to an embodiment of the present disclosure includes: a step of forming a first structure on a first substrate; a step of forming a second structure on a second substrate; and a step of allowing the first substrate and the second substrate to face each other to form a display panel. Relative positional relation between the first structure and the second structure is adjusted two-dimensionally in accordance with a non-planarity characteristic of the display panel.
According to the display device according to the embodiment of the present disclosure and the method of manufacturing the display device according to the embodiment of the present disclosure, the relative positional relation between the first structure and the second structure is adjusted two-dimensionally in accordance with the non-planarity characteristic of the display panel. Hence, it is possible to restrain color unevenness and display unevenness and to perform high quality display.
In the following, some embodiments of the present disclosure will be described in detail with reference to the drawings. It is to be noted that description will be made in the following order.
1. Embodiment (an example of a COA (Color filter On Array) structure)
2. Modification Example 1 (an example in which an overcoat layer is provided on a black matrix)
3. Modification Example 2 (an example of an ordinary structure)
4. Modification Example 3 (an example of a BOA (Black matrix On Array) structure)
5. Modification Example 4 (an example of a convex rectangular panel curved in an X direction)
6. Modification Example 5 (an example of a concave rectangular panel curved in a Y direction)
7. Modification Example 6 (an example of a convex rectangular panel curved in the Y direction)
8. Modification Example 7 (an example of a concave spherical, elliptic panel)
9. Modification Example 8 (an example of a convex spherical, elliptic panel)
10. Modification Example 9 (an example of a concave spherical, elliptic panel with a planar center portion)
11. Modification Example 10 (an example of a convex spherical, elliptic panel with a planar center portion)
12. Modification Example 11 (an example in which an end surface of the black matrix has a smaller inclination angle)
13. Modification Example 12 (an example in which the black matrix and the overcoat layer are level with each other)
14. Modification Example 13 (an example in which the black matrix is embedded in a recess of a second substrate, with the overcoat layer omitted)
In the specification, a front-rear direction of the main body 2 may be called a Z direction; a horizontal direction and a vertical direction in a main surface (a largest surface) of the main body 2 may be called an X direction and a Y direction, respectively.
The main body 2 may include, as a display panel, a liquid crystal panel 10, for example. Front exterior members 4 may be attached to right and left ends of the main body 2. The front exterior members 4 are configured to screen speakers which are described later. Decorative members (front bezels) 5 may be put on upper and lower sides of the liquid crystal panel 10 and the front exterior members 4. A back surface of the main body 2 may be covered with a rear exterior member (a rear cover) 6.
The front casing 11 may be a metal component that covers a front periphery of the liquid crystal panel 10. The liquid crystal cell 12 may have a configuration in which, for example, a liquid crystal layer (not illustrated in
Main components (except for frame-shaped components and substrates) of the liquid crystal panel 10, i.e., the liquid crystal cell 12, the optical sheets 14, the light guide plate 15, and the reflection plate 16 may be all configured of thin plate-like or sheet-like flexible members made of glass or a resin. This may allow the liquid crystal panel 10 to have flexibility as a whole.
Moreover, as illustrated in
A curved shape of the liquid crystal panel 10 may be preferably uniform in the Y direction. When a radius of curvature varies in the Y direction, a twist may be locally generated in the liquid crystal panel 10, causing damage to the liquid crystal panel 10 or leading to possibility of display defects.
Furthermore, on right and left sides of the liquid crystal panel 10 (on right and left ends of the main body 2), the speakers (not illustrated) may be provided. The speakers may be disposed inside the front exterior members 4 illustrated in
Referring to
Referring to
It is to be noted that the stand 3 may be provided under the center of the main body 2, instead of under the right and the left ends of the main body 2. Moreover, when the liquid crystal panel 10 is steeply curved, the main body 2 may self-stand without the stand 3. The stand 3A on the left side and the stand 3B on the right side in
In the display region 12C, a plurality of pixels PXL may be arranged in a two-dimensional array (for example, 6 rows by 9 columns in
The sealing frame 12D is configured to seal liquid crystal inside. The sealing frame 12D may also have a function of an adhesion layer that bonds the first substrate 31 and the second substrate 32 together. In other words, the liquid crystal cell 12 may have a configuration in which the first substrate 31 and the second substrate 32 are bonded together to fix their outer peripheries. It is to be noted that the sealing frame 12D is shaded in
The liquid crystal panel 10 may be, for example, of a VA (Vertical Alignment) mode. One advantage of the VA mode, as compared to an IPS (In Plane Switching) mode, may lie in that backlight illumination is hardly affected by liquid crystal molecules M when a voltage is OFF, and is almost completely shielded by a polarization plate. In other words, considerably pure black can be displayed, making it possible to enhance a contrast ratio. This allows the VA mode to spread widely as liquid crystal panels of television devices with higher image quality.
Moreover,
The data lines DL1 and DL2, the color filters CFg and CFb, and the black matrix BM may be provided in each of the plurality of pixels PXL illustrated in
Referring to
In the present embodiment, the data lines DL1 and DL2, and the color filters CFg and CFb correspond to a concrete example of a “first structure” in the present disclosure. The black matrix BM corresponds to a concrete example of a “second structure” in the present disclosure.
In the display device 1, relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CF and CFb is adjusted two-dimensionally in accordance with a non-planarity characteristic of the liquid crystal panel 10 (the liquid crystal cell 12). Hence, in the display device 1, it is possible to restrain color unevenness and display unevenness and to perform high quality display.
The “non-planarity characteristic” as used here may refer to a measurement value concerning color unevenness or display unevenness based on predetermined picture information. Preferably, the “predetermined picture information” may be, for example, full black. Performing full black display may make it easier to obtain the measurement value concerning color unevenness or display unevenness by virtue of the above-described characteristics of the VA mode.
In the following, description is given in detail on two-dimensional adjustment of the relative positional relation in the present embodiment.
In a flat panel, although not illustrated, the data lines DL1 and DL2, and the color filters CFg and CFb on the first substrate 31 may be so positioned as to face the black matrix BM on the second substrate 32. The backlight illumination may pass through the color filters CFg and CFb to be visually recognized as desired color light.
On the other hand, in a case of a curved panel, since a flat panel is deformed into a curved shape, there may be generated deviation in the relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CFg and CFb, as illustrated in
In the color band 40A, as illustrated in
In the neutral band 40B, as illustrated in
In the high leakage region 40C, as illustrated in
It is to be noted that, when the liquid crystal panel 10 is curved convexly rearward (to the back surface side) as illustrated in
As described above, even when the liquid crystal panel 10 is curved one-dimensionally in the X direction, the unevenness 40 or the displacement amount S of the black matrix BM may exhibit two-dimensional distribution in a multiple annular pattern. Accordingly, in the present embodiment, the relative positional relation between the data lines DL1 and DL2 and the color filters CFg and CFb, and the black matrix BM is adjusted two-dimensionally in accordance with the non-planarity characteristic, that is, the distribution of the unevenness 40 or the amount S of displacement of the black matrix BM.
Specifically, the liquid crystal panel 10 may preferably include an adjustment region 50, as illustrated in
In the adjustment region 50, preferably, a displacement correction amount A may be provided for each of the plurality of pixels PXL. Preferably, the displacement correction amount A may be an amount of correction of displacement of the data lines DL1 and DL2 and the color filters CFg and CFb with respect to the black matrix BM in the direction of the curvature (in the X direction) and may vary two-dimensionally over the plurality of pixels PXL. In this way, it is possible to adjust two-dimensionally distribution of the displacement correction amount A in accordance with the distribution of the unevenness 40 (the displacement amount S), and to restrain the unevenness 40.
It is to be noted that magnitude of the displacement correction amount A may be same or substantially same as that of the displacement amount S. A direction of the displacement correction amount A may be opposite to that of the displacement amount S. In other words, when the liquid crystal panel 10 is curved convexly rearward (to the back surface side) as illustrated in
Moreover, the displacement correction amount A may be preferably largest in a center portion of the adjustment region 50, and may decrease two-dimensionally from the center portion of the adjustment region 50 toward a peripheral region of the adjustment region 40. One reason may be as follows. When the liquid crystal panel 10 is curved one-dimensionally in the X direction, as illustrated in
Furthermore, in the adjustment region 50, as illustrated in
It is to be noted that there is no limitation on the number of the plural regions 50A to 50C in the adjustment region 50; instead of the triple annular pattern illustrated in
The outermost region 50A may correspond to the color band 40A of the unevenness 40. In the region 50A, as illustrated in
The intermediate region 50B may correspond to the neutral band 40B of the unevenness 40. In the region 50B, as illustrated in
The innermost region 50C may correspond to the high leakage region 40C of the unevenness 40. In the region 50C, as illustrated in
It is to be noted that
The adjustment region 50 may be preferably provided on both ends in the direction of the curvature (in the X direction) of the liquid crystal panel 10, as illustrated in
The display device 1 may be manufactured, for example, as follows.
First, the first substrate 31 made of glass, etc. may be prepared. On the first substrate 31, a gate electrode (not illustrated) may be formed. Subsequently, the interlayer insulating film 31A and a semiconductor layer (not illustrated) may be formed. Thereafter, the data lines DL1 and DL2, and an interlayer insulating film (not illustrated) may be formed. The color filters CFg and CFb may be formed.
In the meanwhile, the second substrate 32 made of glass, etc. may be prepared. On the second substrate 32, the black matrix BM and an opposite electrode (not illustrated) may be prepared.
Thereafter, the sealing frame 12D may be formed in a frame region of, for example, the first substrate 31. The sealing frame 12D may be configured of a thermo-setting resin or an ultraviolet resin. The sealing frame 12D may be formed in a rectangular shape surrounding the display region 12C.
Subsequently, the orientation film 31B may be formed in the display region 12C of the first substrate 31. Liquid crystal may be dropped inside the sealing frame 12D to form the liquid crystal layer 33. On the other hand, the orientation film 32B may be formed in the display region 12C of the second substrate 32. Thereafter, the first substrate 31 and the second substrate 32 may be arranged to face each other with the sealing frame 12D in between. The resin that constitutes the sealing frame 12D may be cured to allow the first substrate 31 and the second substrate 32 to be bonded together. In this way, the liquid crystal cell 12 illustrated in
Thereafter, the plate member 17 having desired arc-shaped curvature may be prepared. On one surface of the plate member 17, the reflection plate 16, the light guide plate 15, and the optical sheets 14 may be placed. Also, backlight components such as a heat dissipation plate, a light source (either not illustrated), etc. may be disposed. Subsequently, the intermediate casing 13 may be placed on a periphery of the plate member 17. The liquid crystal cell 12 may be fitted in the intermediate casing 13. The front casing 11 may be attached to the front periphery of the liquid crystal cell 12. Thus, the liquid crystal panel 10 may be formed.
Here, the main components (except for frame-shaped components and substrates) of the liquid crystal panel 10, i.e., the liquid crystal cell 12, the optical sheets 14, the light guide plate 15, and the reflection plate 16 may be all configured of thin plate-like or sheet-like flexible members made of glass or a resin. This may allow the liquid crystal panel 10 to have flexibility as a whole. Accordingly, the liquid crystal panel 10 may be curved in an arc shape in accordance with the plate member 17.
After forming the liquid crystal panel 10, the speakers (not illustrated) may be installed in the front casing 11. The substrates (not illustrated) may be mounted on a rear side of the plate member 17. Thereafter, the speakers (not illustrated) may be screened by the front exterior members 4. The decorative members 5 may be put on the upper and the lower sides of the liquid crystal panel 10 and the front exterior members 4. Thus, the main body 2 may be formed. Thereafter, the back surface of the main body 2 may be covered with the rear exterior member 6. The stand 3 may be attached to under the right and the left ends of the main body 2. Thus, the display device 1 illustrated in
Moreover, in the present embodiment, the relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CFg and CFb is adjusted two-dimensionally in accordance with the non-planarity characteristic of the liquid crystal panel 10. Specifically, in the process of forming the black matrix BM, or in the process of forming the data lines DL1 and DL2 and the color filters CFg and CFb, the adjustment region 50 may be formed in a state in which the first substrate 31 and the second substrate 32 are planar. To the adjustment region 50, the two-dimensional adjustment of the relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CFg and CFb may be applied. Then, the liquid crystal panel 10 may be curved.
In the following, description is given on an example in which the adjustment region 50 is formed concerning the positional displacement of the black matrix BM in a case of the COA structure illustrated in
First, as the non-planarity characteristic of the liquid crystal panel 10, the measurement value concerning color unevenness or display unevenness based on the predetermined picture information may be obtained. Based on the measurement value, the displacement amount S of the black matrix BM may be measured or calculated. Specifically, the liquid crystal panel 10 as a test sample may be allowed to perform full black display, to investigate a state of the generation of the unevenness 40 illustrated in
Next, the adjustment region 50 may be provided in accordance with the state of the generation of the unevenness 40 illustrated in
The displacement correction amount A may be largest in the center region of the adjustment region 50, and may decrease two-dimensionally from the center region of the adjustment region 50 toward the peripheral region of the adjustment region 50, in accordance with the state of the generation of the unevenness 40 illustrated in
Specifically, as illustrated in
Then, in the above-described manufacturing method, in the process of forming the black matrix BM on the second substrate 32, the black matrix BM of each pixel PXL in the adjustment region 50 may be formed in an arrangement involving the displacement correction amount A of the plural regions 50A to 50C. In the process of forming the data lines DL1 and DL2 and the color filters CFg and CFb on the first substrate 31, a similar arrangement to that in a case of a flat panel may be possible.
Thereafter, the liquid crystal panel 10 may be fabricated with the above-described manufacturing method, and then, the liquid crystal panel 10 may be curved one-dimensionally in the X direction. At this occasion, in both ends in the direction of the curvature (in the X direction), the black matrix BM may be displaced in the direction of the curvature (in the X direction) with respect to the data lines DL1 and DL2 and the color filters CFg and CFb. However, the arrangement of the black matrix BM of the plurality of pixels PXL in the adjustment region 50 may be adjusted two-dimensionally, reflecting the displacement correction amount A that estimates in advance the displacement amount S resulting from the curvature. Accordingly, when the liquid crystal panel 10 is curved, the displacement amount S resulting from the curvature and the displacement correction amount A provided in advance may cancel each other, reducing the deviation in the relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CFg and CFb.
In the display device 1, the light from the light source (not illustrated) may be selectively transmitted by the liquid crystal panel 10, allowing for image display. Here, the liquid crystal panel 10 may be curved one-dimensionally (in the X direction), convexly rearward (to the back surface side) in an arc shape. Accordingly, as illustrated in
Moreover, since the speakers (not illustrated) may be disposed on the right and the left sides of the liquid crystal panel 10, picture and sound may be unified without visually separated, making it possible to enhance the sense of unity and the feeling of immersion, in association with the above-mentioned visual effects by the curvature of the liquid crystal panel 10.
Furthermore, in the present embodiment, the relative positional relation between the black matrix BM on the first substrate 31, and the data lines DL1 and DL2 and the color filters CFg and CFb on the second substrate 32 is adjusted two-dimensionally in accordance with the non-planarity characteristic of the liquid crystal panel 10. Accordingly, the deviation in the relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CFg and CFb may be reduced, and the unevenness 40 may be restrained.
As described above, in the present embodiment, the relative positional relation between the black matrix BM, and the data lines DL1 and DL2 and the color filters CFg and CFb is adjusted two-dimensionally in accordance with the non-planarity characteristic of the liquid crystal panel 10. Hence, it is possible to restrain color unevenness or display unevenness and to perform high quality display.
It is to be noted that, in the above-described example embodiment, as illustrated in
Specifically, on the first substrate 31, for example, the interlayer insulating film 31A, the data lines DL1 and DL2, the interlayer insulating film 31C such as SiN, and the orientation film 31B may be provided in the order of closeness to the first substrate 31. On the second substrate 32, for example, the black matrix BM, the color filters CFg and CFb, the overcoat layer OC, and the orientation film 32B may be provided in the order of closeness to the second substrate 32.
In the present modification example, the data lines DL1 and DL2 correspond to a concrete example of a “first structure” in the present disclosure. The black matrix BM and the color filters CFg and CFb correspond to a concrete example of a “second structure” in the present disclosure.
In a display device 1B, the relative positional relation between the black matrix BM and the color filters CFg and CFb, and the data lines DL1 and DL2 is adjusted two-dimensionally in accordance with the non-planarity characteristic of the liquid crystal panel 10 (the liquid crystal cell 12). Thus, in the display device 1B, similarly to the above-described example embodiment, it is possible to restrain color unevenness or display unevenness and to perform high quality display.
Specifically, in the present modification example, when the liquid crystal panel 10 is curved, as illustrated in
It is possible to restrain the black matrix BM from being affected by the deviation, by the two-dimensional adjustment of the arrangement of the black matrix BM reflecting the displacement correction amount A, in a similar manner to the above-described example embodiment. It is also possible to restrain the color filters CFg and CFb from being affected by the deviation, by arranging the color filters CFg and CFb in accordance of the adjusted arrangement of the black matrix BM.
Furthermore, as illustrated in
The present modification example may involve possibility of slight decrease in intensity due to light absorption by the overcoat layer OC, and may be suitable for a 2K panel, etc. On the other hand, the COA structure as in the above-described example embodiment may involve less decrease in intensity, as compared to the present modification example, and may be suitable for a 4K panel including a large screen with high image quality.
Also, the present disclosure may be applicable to a case of a BOA structure, as illustrated in
Specifically, on the first substrate 31, for example, the data lines DL1 and DL2, the black matrix BM, the overcoat layer OC, and the orientation film 31B may be provided in the order of closeness to the first substrate 31. On the second substrate 32, for example, the interlayer insulating film 32A, the color filters CFg and CFb, and the orientation film 32B may be provided in the order of closeness to the second substrate 32.
In the present modification example, the data lines DL1 and DL2, and the black matrix BM correspond to a concrete example of a “first structure” of the present disclosure. The color filters CFg and CFb correspond to a concrete example of a “second structure” of the present disclosure.
In a display device 1C, the relative positional relation between the data lines DL1 and DL2 and the black matrix BM, and the color filters CFg and CFb is adjusted two-dimensionally in accordance with the non-planarity characteristic of the liquid crystal panel 10 (the liquid crystal cell 12). Thus, in the display device 1C, similarly to the above-described example embodiment, it is possible to restrain color unevenness or display unevenness and to perform high quality display.
Specifically, in the present modification example, when the liquid crystal panel 10 is curved, as illustrated in
It is possible to restrain the color filters CFg and CFb from being affected by the deviation, by the two-dimensional adjustment of the arrangement of the color filtlers CFg and CFb reflecting the displacement correction amount A, in a similar manner to the above-described example embodiment.
Furthermore, as illustrated in
Table 1 summarizes the forgoing description on a chart, that is, structures before application of the present disclosure, structures after the application of the present disclosure, and disadvantages before the application of the present disclosure, as to the COA structure in the example embodiment and the modification example 1, the ordinary structure in the modification example 2, and the BOA structure in the modification example 3.
Description is given next on modification examples 4 to 10 concerning the direction of the curvature or the shape of the liquid crystal panel 10.
In the above-described example embodiment, description is given on a case in which the liquid crystal panel 10 is a concave panel curved convexly rearward (to the back surface side). However, the present disclosure may be applicable to a case in which the liquid crystal panel 10 is a convex panel curved convexly forward, as illustrated in
Moreover, in the above-described example embodiment, description is given on a case in which the liquid crystal panel 10 is curved one-dimensionally in the X direction. However, the present disclosure may be applicable to a case in which the liquid crystal panel 10 is curved one-dimensionally in the Y direction, as illustrated in
In a case in which the liquid crystal panel 10 is curved one-dimensionally in the Y direction in this way, when the liquid crystal panel 10 is allowed to perform full black display, the colored unevenness 40 may be generated in an elliptic shape in vertical symmetry on both ends in the direction of the curvature (in the Y direction). Accordingly, the adjustment region 50 may be preferably provided on both ends in the direction of the curvature (in the Y direction) of the liquid crystal panel 10, in accordance with the positions of the unevenness 40 generated.
In the above-described modification example 5, description is given on a case in which the liquid crystal panel 10 is a concave panel curved convexly rearward (to the back surface side). However, the present disclosure may be applicable to a case in which the liquid crystal panel 10 is a convex panel curved convexly forward, as illustrated in
Furthermore, in the above-described example embodiment, description is given on a case in which the liquid crystal panel 10 is rectangular in planar shape. However, the present disclosure may be applicable to a case in which, as illustrated in
When the liquid crystal panel 10 forms a spherical surface in this way, the whole spherical surface may preferably constitute the adjustment region 50. In the adjustment region 50, as illustrated in
In the above-described modification example 7, description is given on a case in which the liquid crystal panel 10 is a concave spherical panel curved convexly rearward (to the back surface side). However, the present disclosure may be applicable to a case in which the liquid crystal panel 10 is a convex spherical panel curved convexly forward, as illustrated in
In addition, in the above-described modification example 7, description is given on a case in which the whole liquid crystal panel 10 forms the spherical surface. However, the present disclosure may be applicable to a case in which part (only a periphery) of the liquid crystal panel 10 forms a spherical surface, as illustrated in
Specifically, the liquid crystal panel 10 according to the present modification example may be a concave, partly-spherical panel including, for example, a planar portion 10A in a center and a spherical portion 10B around the planar portion 10A. In this case, the spherical portion 10B may preferably constitute the adjustment region 50. In the adjustment region 50, plural regions 50D to 50H that form a multiple annular pattern may be preferably provided. The displacement correction amount A may be largest in an intermediate region 50F of the plural regions 50D to 50H, may decrease stepwise from the intermediate region 50F toward an innermost region 50H, and may decrease stepwise from the intermediate region 50F toward an outermost region 50D.
The displacement correction amount A of the intermediate region 50F may be equivalent to, for example, that of the region 50C in the above-described example embodiment. The displacement correction amount A of the innermost region 50H and the outermost region 50D may be equivalent to that of the region 50A in the above-described example embodiment. The displacement correction amount A of the regions 50E and 500 may be equivalent to that of the region 50B in the above-described example embodiment.
In the above-described modification example 9, description is given on a case in which the spherical portion 10B is curved convexly rearward (to the back surface). However, the present disclosure may be applicable to a case of a convex, partly-spherical panel in which the spherical portion 10B is curved convexly forward, as illustrated in
In the following, description is given on modification examples 11 to 13 that make it possible to eliminate the overcoat layer OC.
In the modification example 1, as illustrated in
The black matrix BM according to the present modification example may be formed, for example, by decreasing the inclination angle θ of a side surface of the black matrix BM by adjustment of etching conditions to form a wedge-shaped cross-section as illustrated in
Alternatively, as illustrated in
One possible method of allowing the black matrix BM and the overcoat layer OC to be level with each other may be, for example, as follows. The black matrix BM and the overcoat layer OC may be formed on the second substrate 32, and then, only the overcoat layer OC may be etched.
In another alternative, as illustrated in
The recess 32C may have preferably a concave shape with a planar bottom. Since the black matrix BM is configured of a resin, the planar bottom of the recess 32C may make it easier to allow the black matrix BM to be planar as a whole.
In the present modification example, first, the recess 32C may be formed by machining, etc. of the second substrate 32. The black matrix BM may be embedded in the recess 32C. Next, the surface of the black matrix BM may be planarized by etching, allowing the surface of the black matrix BM to be flush with a surface of the second substrate 32.
Although description has been made by giving the example embodiment as mentioned above, the contents of the present disclosure are not limited to the above-mentioned example embodiment and may be modified in a variety of ways. For example, in the above-described example embodiment and modification examples, description is given on a case in which the adjustment region 50 is divided into the plural regions 50A to 50C in a triple annular pattern with three stages, or into the plural regions 50D to 50H in a quintet annular pattern with three stages. However, the adjustment region 50 is not limited to these examples, but may be divided in a double annular pattern with two stages, or in a triple annular pattern with two stages. Alternatively, the adjustment region 50 may be divided in a multiple annular pattern with four or more stages.
Moreover, for example, a material and a thickness of each layer as described in the above-mentioned example embodiment are not limited to as exemplified above, but other materials and other thicknesses may be adopted. The liquid crystal layer 33 is not limited to the VA mode.
Furthermore, for example, in the above-described example embodiment, description has been given on specific configurations of the display device 1 (television device). However, it is not necessary to include all the components, and another component or other components may be further provided.
The present disclosure may be applicable regardless of a screen size of the liquid crystal panel 10. Moreover, applicability of the present disclosure is not particularly limited by definition of the liquid crystal panel 10; the present disclosure may be applicable to any of an FHD (Full High Definition) panel, a 2K panel, and a 4K panel. As definition becomes higher, the influence of the level differences due to the black matrix BM becomes larger, and even higher effects can be enjoyed.
The present disclosure may be widely applied to an electronic apparatus in various fields that is configured to display an image or a picture based on a picture signal inputted from outside or generated inside; specifically, as well as a television device that has been explained in the above-described example embodiment, other display devices, a curved smart phone, a tablet, etc.
It is to be noted that the contents of the present disclosure may have the following configurations.
(1)
A display device, including a display panel,
the display panel including:
a first substrate and a second substrate facing each other;
a first structure provided on the first substrate; and
a second structure provided on the second substrate,
wherein relative positional relation between the first structure and the second structure is adjusted two-dimensionally in accordance with a non-planarity characteristic of the display panel.
(2)
The display device according to (1),
wherein the display panel is curved, and includes an adjustment region to which two-dimensional adjustment of the relative positional relation is applied.
(3)
The display device according to (2),
wherein the display panel includes a plurality of pixels arranged in a two-dimensional array,
the first structure and the second structure are provided in each of the plurality of pixels, and
in the adjustment region, a displacement correction amount is provided for each of the plurality of pixels, the displacement correction amount being an amount of correction of displacement of the second structure with respect to the first structure in a direction of curvature and varying two-dimensionally over the plurality of pixels.
(4)
The display device according to (3),
wherein the displacement correction amount is largest in a center portion of the adjustment region, and decreases two-dimensionally from the center portion of the adjustment region toward a peripheral portion of the adjustment region.
(5)
The display device according to (4),
wherein plural regions that form a multiple annular pattern are provided in the adjustment region, and
the displacement correction amount is largest in an innermost region of the plural regions, and decreases stepwise from the innermost region toward an outermost region.
(6)
The display device according to (5),
wherein the display panel is curved one-dimensionally, and includes the adjustment region on both ends in the direction of the curvature.
(7)
The display device according to (5),
wherein the display panel forms a spherical surface, and the spherical surface constitutes the adjustment region.
(8)
The display device according to (4),
wherein the display panel includes a planar portion and a spherical portion around the planar portion, and the spherical portion constitutes the adjustment region,
plural regions that form a multiple annular pattern is provided in the adjustment region, and
the displacement correction amount is largest in an intermediate region of the plural regions, decreases stepwise from the intermediate region toward an innermost region, and decreases stepwise from the intermediate region toward an outermost region.
(9)
The display device according to any one of (1) to (8),
wherein the non-planarity characteristic is a measurement value concerning color unevenness or display unevenness based on predetermined picture information.
(10)
The display device according to any one of (1) to (9),
wherein the display panel is a liquid crystal panel,
the first structure is a black matrix, and
the second structure is a wiring or a color filter.
(11)
The display device according to (10),
wherein the liquid crystal panel is of a VA mode.
(12)
The display device according to (10) or (11), including an overcoat layer provided on a surface of the black matrix or on a surface of the color filter.
(13)
A method of manufacturing a display device, including:
a step of forming a first structure on a first substrate;
a step of forming a second structure on a second substrate; and
a step of allowing the first substrate and the second substrate to face each other to form a display panel,
wherein relative positional relation between the first structure and the second structure is adjusted two-dimensionally in accordance with a non-planarity characteristic of the display panel.
(14)
The method of manufacturing the display device according to (13),
wherein, in the step of forming the first structure or in the step of forming the second structure, an adjustment region to which two-dimensional adjustment of the relative positional relation is applied is formed in a state in which the first substrate or the second substrate is planar, and
in the step of forming the display panel, the display panel is curved.
(15)
The method of manufacturing the display device according to (14),
wherein a plurality of pixels in a two-dimensional array are formed in the display panel,
the first structure and the second structure are provided in each of the plurality of pixels, and
in the adjustment region, a displacement correction amount is provided for each of the plurality of pixels, the displacement correction amount being an amount of correction of displacement of the second structure with respect to the first structure in a direction of curvature and varying two-dimensionally over the plurality of pixels.
(16)
The method of manufacturing the display device according to (15),
wherein the displacement correction amount is largest in a center portion of the adjustment region, and decreases two-dimensionally from the center portion of the adjustment region toward a peripheral portion of the adjustment region.
(17)
The method of manufacturing the display device according to (16),
wherein plural regions that form a multiple annular pattern are provided in the adjustment region, and
the displacement correction amount is largest in an innermost region of the plural regions, and decreases stepwise from the innermost region toward an outermost region.
(18)
The method of manufacturing the display device according to (16) or (17),
wherein a measurement value concerning color unevenness or display unevenness based on predetermined picture information is obtained as the non-planarity characteristic, and
the displacement correction amount is measured or calculated based on the measurement value.
(19)
The method of manufacturing the display device according to any one of (13) to (18),
wherein a liquid crystal panel is formed as the display panel,
a black matrix is formed as the first structure, and
a wiring or a color filter is formed as the second structure.
(20)
The method of manufacturing the display device according to (19),
wherein an overcoat layer is formed on a surface of the black matrix or on a surface of the color filter.
This application claims the benefit of Japanese Priority Patent Application JP 2013-53261 filed on Mar. 15, 2013 the entire contents of which are incorporated herein by reference.
It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2013-053261 | Mar 2013 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2014/053980 | 2/20/2014 | WO | 00 |
