CN110579902A - curved surface display panel and display device - Google Patents
curved surface display panel and display device Download PDFInfo
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- CN110579902A CN110579902A CN201910941742.7A CN201910941742A CN110579902A CN 110579902 A CN110579902 A CN 110579902A CN 201910941742 A CN201910941742 A CN 201910941742A CN 110579902 A CN110579902 A CN 110579902A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a curved surface display panel and a display device, wherein the curved surface display panel comprises a first area and a second area which are arranged along a first direction; the color film substrate comprises a first substrate and a black matrix located on the first substrate and facing the array substrate, the black matrix comprises latticed shading strips, and the latticed shading strips define a plurality of sub-pixel openings; the black matrix comprises first light-shielding strips which extend along the second direction, are arranged along the first direction and are positioned in the first area, and second light-shielding strips which extend along the second direction, are arranged along the first direction and are positioned in the second area; the plurality of sub-pixel openings include a first sub-pixel opening located in the first region and a second sub-pixel opening located in the second region; in the first direction, the width of the second light-shielding bar is greater than that of the first light-shielding bar, and the width of the second sub-pixel opening is greater than that of the first sub-pixel opening. The invention provides a curved surface display panel and a display device, which are used for avoiding dark state light leakage.
Description
Technical Field
The invention relates to the technical field of display, in particular to a curved surface display panel and a display device.
background
the curved surface display panel is for presenting the curved surface shape of certain radian, and for traditional flat display panel, curved surface display panel is bigger at the visual angle of screen left and right sides, can provide more excellent visual experience for the user.
At present, the processing method of the curved display panel can be obtained by bending a planar display panel to a required radian through an external force.
Taking the liquid crystal display panel as an example, when the liquid crystal display panel is bent, the alignment deviation of two side edges of the liquid crystal display panel is large, and the black matrix of the color film substrate cannot shield the via holes and the metal on the array substrate, so that dark state light leakage is caused.
Disclosure of Invention
the invention provides a curved surface display panel and a display device, which are used for avoiding dark state light leakage.
In a first aspect, an embodiment of the present invention provides a curved display panel, including a first region and a second region arranged along a first direction, where the curved display panel is curved around a curved axis, the curved axis is parallel to a second direction, and the second direction intersects with the first direction; the second region has a greater bending curvature than the first region;
the curved surface display panel comprises an array substrate and a color film substrate which are oppositely arranged;
The color film substrate comprises a first substrate and a black matrix located on the first substrate and facing the array substrate, the black matrix comprises latticed shading strips, and the latticed shading strips define a plurality of sub-pixel openings; the black matrix comprises first light-shielding strips which extend along the second direction, are arranged along the first direction and are positioned in the first area, and second light-shielding strips which extend along the second direction, are arranged along the first direction and are positioned in the second area; the plurality of sub-pixel openings include a first sub-pixel opening located in the first region and a second sub-pixel opening located in the second region;
in the first direction, the width of the second light-shielding bar is greater than that of the first light-shielding bar, and the width of the second sub-pixel opening is greater than that of the first sub-pixel opening.
In a second aspect, an embodiment of the present invention provides a display device, including the curved display panel of the first aspect.
The curved display panel provided by the embodiment of the invention comprises a first area and a second area, the curved display panel is bent around a bending axis at least in the second area, and the curved display panel can be bent towards the light-emitting display side or away from the light-emitting display side. The second region has a greater curvature than the first region. The first area and the second area are arranged along the first direction, and in the first direction, the width of the second light-shielding strip in the second area is larger than that of the first light-shielding strip in the first area, so that compared with the prior art, the width of the light-shielding strip in the second area is increased, a black matrix of the color film substrate shields via holes and metal on the array substrate, and dark-state light leakage is avoided. Further, in the embodiment of the present invention, in the first direction, the width of the second sub-pixel opening in the second region is greater than the width of the first sub-pixel opening in the first region, so that the width of the second sub-pixel opening in the second region is increased, the area of the sub-pixel opening in the second region is increased, the decrease in the transmittance of the second region due to the increase in the width of the light-shielding bar in the second region is improved, and the difference in the transmittance of the first region and the second region is reduced.
Drawings
Fig. 1 is a schematic perspective view of a curved display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view along the direction AA' in FIG. 1;
FIG. 3 is an enlarged schematic view of the area S1 in FIG. 2;
Fig. 4 is a schematic top view of a color film substrate in the curved display panel shown in fig. 1 in a flattened state;
Fig. 5 is a top view of a partial structure of a color film substrate in another curved display panel according to an embodiment of the present invention in a flattened state;
Fig. 6 is a schematic top view of a color film substrate in a curved display panel according to another embodiment of the present invention in a flattened state;
fig. 7 is a top view of a partial structure of a color film substrate in another curved display panel according to an embodiment of the present invention in a flattened state;
FIG. 8 is a schematic cross-sectional view taken along the direction BB' in FIG. 7;
Fig. 9 is a top view of a partial structure of a color film substrate in another curved display panel according to an embodiment of the present invention in a flattened state;
FIG. 10 is a schematic cross-sectional view taken along the direction CC' in FIG. 9;
FIG. 11 is a schematic top view of the curved display panel shown in FIG. 1 with the array substrate in a flattened state;
fig. 12 is a schematic perspective view of a curved display panel according to an embodiment of the present invention;
FIG. 13 is a schematic view of the cross-sectional structure DD' in FIG. 12;
Fig. 14 is a schematic perspective view of a display device according to an embodiment of the present invention;
fig. 15 is a schematic cross-sectional structure view of EE' in fig. 14.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic perspective view of a curved display panel according to an embodiment of the present invention, fig. 2 is a schematic cross-sectional view along an AA' direction in fig. 1, fig. 3 is an enlarged schematic structural view of an area S1 in fig. 2, and fig. 4 is a schematic top-view structural view of a color filter substrate in the curved display panel shown in fig. 1 in a flattened state, referring to fig. 1, fig. 2, fig. 3, and fig. 4, the curved display panel includes a first region 101 and a second region 102 arranged along a first direction, and the number and the sequence of the first region 101 and the second region 102 are not limited in the embodiment of the present invention as long as the first region 101 and the second region 102 are arranged along the first direction. The curved display panel is curved about a curved axis L1, the curved axis L1 being parallel to a second direction, the second direction intersecting the first direction. The position and number of the bending axes L1 in the embodiment of the present invention are not limited as long as the bending axis L1 is parallel to the second direction. The curved surface display panel comprises an array substrate 2 and a color film substrate 1 which are oppositely arranged. The color filter substrate 1 includes a first substrate 11 and a black matrix 12 located on the first substrate 11 and facing the array substrate 2, the black matrix 12 includes a grid-shaped light-shielding strip, the grid-shaped light-shielding strip defines a plurality of sub-pixel openings 13, and light can exit to the outside of the curved display panel through the plurality of sub-pixel openings 13 and be received by human eyes, so that display is achieved. The black matrix 12 includes first light-shielding bars 121 arranged along the first direction and located in the first region 101 and extending along the second direction, and second light-shielding bars 122 arranged along the first direction and located in the second region 102 and extending along the second direction. The plurality of sub-pixel openings 13 include a first sub-pixel opening 131 located in the first region 101 and a second sub-pixel opening 132 located in the second region 102. In the first direction, the width of the second light-shielding bar 122 is greater than the width of the first light-shielding bar 121, and the width of the second sub-pixel opening 132 is greater than the width of the first sub-pixel opening 131.
The width of the first light-shielding strip 121 is the length of the first light-shielding strip 121 in the first direction, that is, the distance between two side edges of the first light-shielding strip 121 in the first direction. Similarly, the width of the second light-shielding bar 122 is the length of the second light-shielding bar 122 in the first direction, that is, the distance between two side edges of the second light-shielding bar 122 in the first direction. The width of the first sub-pixel opening 131 is the length of the first sub-pixel opening 131 along the first direction, that is, the distance between two side edges of the first sub-pixel opening 131 in the first direction. The width of the second sub-pixel opening 132 is the length of the second sub-pixel opening 132 in the first direction, that is, the distance between two side edges of the second sub-pixel opening 132 in the first direction.
The curved display panel provided by the embodiment of the invention comprises a first area and a second area, the curved display panel is bent around a bending axis at least in the second area, and the curved display panel can be bent towards the light-emitting display side or away from the light-emitting display side. The second region has a greater curvature than the first region. The first area and the second area are arranged along the first direction, and in the first direction, the width of the second light-shielding strip in the second area is larger than that of the first light-shielding strip in the first area, so that compared with the prior art, the width of the light-shielding strip in the second area is increased, a black matrix of the color film substrate shields via holes and metal on the array substrate, and dark-state light leakage is avoided. Further, in the embodiment of the present invention, in the first direction, the width of the second sub-pixel opening in the second region is greater than the width of the first sub-pixel opening in the first region, so that the width of the second sub-pixel opening in the second region is increased, the area of the sub-pixel opening in the second region is increased, the decrease in the transmittance of the second region due to the increase in the width of the light-shielding bar in the second region is improved, and the difference in the transmittance of the first region and the second region is reduced.
Alternatively, referring to fig. 1, 2 and 3, in the first direction, the first region 101 is located between two second regions 102. The first region 101 is a plane and the second region 102 is a curved surface. That is, the curvature of the first region 101 of the curved display panel is 0, and the curvature of the second region 102 of the curved display panel is greater than the curvature of the first region 101 of the curved display panel. In other embodiment modes, the curved display panel may further include other numbers of the first regions 101 and the second regions 102, and the number of the first regions 101 and the second regions 102 is not limited in the embodiment of the present invention.
Exemplarily, referring to fig. 1, 2 and 3, in the first direction, the first region 101 is a central region of the curved display panel, and the second region 102 is both side edge regions of the curved display panel. The center of curvature of the curved portion of the curved display panel is away from the light emitting display side of the curved display panel. The curved display panel includes an array substrate 2 and a color filter substrate 1, the array substrate 2 protrudes toward the color filter substrate 1, that is, the bending axis L1 is located on a side of the array substrate 2 away from the color filter substrate 1, so as to form the curved display panel shown in fig. 1-3
Alternatively, referring to fig. 4, in the first direction, all the first light-shielding bars 121 have the same width, and all the first sub-pixel openings 131 have the same width. In the embodiment of the present invention, by setting all the first light-shielding strips 121 to have the same width, and setting all the first sub-pixel openings 131 to have the same width, the difficulty in manufacturing the first light-shielding strips 121 and the first sub-pixel openings 131 in the first region 101 is reduced. In addition, since the widths of all the first light-shielding bars 121 are the same, the widths of all the first sub-pixel openings 131 are the same, all the first sub-pixel openings 131 are uniformly distributed in the first region 101, and all the positions in the first region 101 of the curved display panel have the same resolution, which is beneficial to displaying images. The ratio of the first sub-pixel opening 131 to the first light-shielding strip 121 is the same, all sub-pixels in the first region 101 have the same opening area, all positions in the first region 101 of the curved display panel have the same transmittance, and the brightness distribution of the image displayed in the first region 101 is uniform.
alternatively, referring to fig. 4, in the first direction, all the second light-shielding bars 122 have the same width, and all the second sub-pixels 132 have the same width of the opening. In the embodiment of the present invention, the widths of all the second light-shielding strips 122 are the same, and the widths of all the openings of the second sub-pixels 132 are the same, so that the difficulty in manufacturing the second light-shielding strips 122 and the second sub-pixel openings 132 in the second region 102 is reduced. In addition, since the widths of all the second light-shielding bars 122 are the same, the widths of all the second sub-pixel openings 132 are the same, all the second sub-pixel openings 132 are uniformly distributed in the second region 102, and all the positions in the second region 102 of the curved display panel have the same resolution, which is beneficial to displaying images. The ratio of the second sub-pixel opening 132 to the second light-shielding strip 122 is the same, all sub-pixels in the second region 102 have the same opening area, all positions in the second region 102 of the curved display panel have the same transmittance, and the brightness distribution of the image displayed in the second region 102 is uniform.
Fig. 5 is a partial structure top view of another curved display panel in which a color filter substrate is in a flattened state according to an embodiment of the present invention, and referring to fig. 5, a boundary line between a first region 101 and a second region 102 is a region boundary line L2. In the first direction, the width of the second light-shielding bars 122 gradually increases with increasing distance from the region boundary line L2, and the width of the second sub-pixel openings 132 gradually increases with increasing distance from the region boundary line L2. Since the bending curvature of the second region 102 is larger as the distance from the region boundary line L2 increases, that is, the bending degree of the second region 102 increases as the distance from the region boundary line L2 increases, and the misalignment between the array substrate 2 and the color filter substrate 1 is more serious as the distance from the region boundary line L2 increases, in the embodiment of the present invention, by setting: in the first direction, the width of the second light-shielding strip 122 gradually increases along with the increase of the distance from the area boundary line L2, so that the width change of the second light-shielding strip 122 is consistent with the bending degree of each part of the second area 102, and the width of the second light-shielding strip 122 increases along with the increase of the bending degree of the second area 102, thereby ensuring that the second light-shielding strip 122 is not too wide to affect the penetration rate, ensuring that the second light-shielding strip 122 can shield the via holes and the metal on the array substrate 2, and avoiding the occurrence of dark state light leakage. Further, in the embodiment of the present invention, the width variation of the second sub-pixel opening 132 is also set corresponding to the width variation of the second light-shielding bar 122, that is, the following are set: in the first direction, the width of the second sub-pixel opening 132 gradually increases with the distance from the region boundary line L2, so that the decrease of the transmittance of the second region 102 due to the increase of the width of the light-shielding strip in the second region 102 is improved, and the difference of the transmittance of the first region 101 and the second region 102 is reduced. And reducing the difference in transmission rates at various locations within the second region 102.
Exemplarily, referring to fig. 5, in the second region 102, the plurality of second light-shielding bars 122 are a first sub-light-shielding bar 1221, a second sub-light-shielding bar 1222, and a third sub-light-shielding bar 1223, respectively. The second sub-pixel openings 132 are the first sub-pixel opening 1321 and the second sub-pixel opening 1322, respectively. The plurality of first sub-pixel openings 1321 are arranged in a row along the second direction, and the plurality of second sub-pixel openings 1322 are arranged in a row along the second direction. The distance between the first sub-gobo 1221 and the area boundary line L2 is smaller than the distance between the second sub-gobo 1222 and the area boundary line L2, and the distance between the second sub-gobo 1222 and the area boundary line L2 is smaller than the distance between the third sub-gobo 1223 and the area boundary line L2. In the first direction, the width of the first sub-louver 1221 is smaller than that of the second sub-louver 1222, and the width of the second sub-louver 1222 is smaller than that of the third sub-louver 1223. The distance between the first sub-pixel opening 1321 and the region boundary line L2 is smaller than the distance between the second sub-pixel opening 1322 and the region boundary line L2. In the first direction, the width of the first sub-pixel opening 1321 is smaller than the width of the second sub-pixel opening 1322.
illustratively, referring to fig. 3, 4 and 5, the region boundary line L2 extends in the second direction, the region boundary line L2 is a boundary line between the first region 101 of the plane and the second region 102 of the curved surface, the curvature of the curved display panel is 0 (i.e., the curvature of the first region 101 is 0) from the region boundary line L2 toward the first region 101, and the curvature of the curved display panel is greater than 0 (i.e., the curvature of the second region 102 is greater than 0) from the region boundary line L2 toward the second region 102.
Alternatively, referring to fig. 4 and 5, in the first direction, the maximum width of the first light-shielding bars 121 is DM 1. Here, the maximum width of the first light-shielding bars 121 refers to a width of the first light-shielding bar 121 having the maximum width among all the first light-shielding bars 121. The minimum width of the second light-shielding bars 122 is DM 2. The minimum width of the second light-shielding bars 122 refers to a width of the second light-shielding bar 122 having the minimum width among all the second light-shielding bars 122. DM1 and DM2 satisfy: 0.5 mu m < DM2-DM1 < 1 mu m. When DM2-DM1 is less than or equal to 0.5 μm, the width of the second light-shielding strip 122 is increased slightly, which is not good for light leakage blocking effect caused by misalignment between the array substrate 2 and the color filter substrate 1 in the second region 102, and cannot completely prevent dark state light leakage. When DM2-DM1 is greater than or equal to 1 μm, on the one hand, the width of the second light-shielding bar 122 is increased greatly under the condition that the width of the second sub-pixel opening 132 is not changed, and the transmittance of the second region 102 is reduced by the excessively wide second light-shielding bar 122. On the other hand, in the case where the width of the second sub-pixel opening 132 increases with the width of the second light-shielding bar 122, the width of the second light-shielding bar 122 increases more, resulting in an excessively low number of pixels per inch (i.e., PPI) in the second region 102. Therefore, in the embodiment of the present invention, by setting DM2 to DM1 to be 0.5 μm < 1 μm, it is ensured that the second light-shielding strip 122 can shield the via holes and the metal on the array substrate 2, thereby avoiding the occurrence of dark state light leakage, and comprehensively considering and balancing the transmittance and the PPI of the second region 102.
Alternatively, referring to fig. 4 and 5, in the first direction, the width of the first light-shielding bar 121 is D1, the width of the first sub-pixel opening 131 adjacent to the first light-shielding bar 121 and located on the side of the first light-shielding bar 121 close to the second region 102 is P1, the width of the second light-shielding bar 122 is D2, the width of the second sub-pixel opening 132 adjacent to the second light-shielding bar 122 and located on the side of the second light-shielding bar 122 far from the first region 101 is P2, and D1/P1 is D2/P2. In the embodiment of the present invention, the ratio of the adjacent first light-shielding bars 121 and the first sub-pixel openings 131 in the first region 101 is set to be equal to the ratio of the adjacent second light-shielding bars 122 and the second sub-pixel openings 132 in the second region 102. The transmittance of the second region 102 is made to be consistent with that of the first region 101 as much as possible, so that the brightness difference of the images displayed in the first region 101 and the second region 102 is reduced, and the display effect is improved.
Exemplarily, referring to fig. 5, all the first light-shielding bars 121 have the same width and all the first sub-pixel openings 131 have the same width in the first direction. The ratio of the width of the first sub-light-shielding bar 1221 to the width of the first sub-pixel opening 1321 is equal to the ratio of the width of the first light-shielding bar 121 to the width of the first sub-pixel opening 131. The ratio of the width of the second sub-shading strip 1222 to the width of the second sub-pixel opening 1322 is equal to the ratio of the width of the first shading strip 121 to the width of the first sub-pixel opening 131, so that the transmittance of the second region 102 is equal to the transmittance of the first region 101 and is consistent as much as possible, the brightness difference of the displayed images of the first region 101 and the second region 102 is reduced, and the display effect is improved.
fig. 6 is a schematic top view of another curved display panel according to an embodiment of the present invention, wherein the color filter substrate is in a flattened state, and referring to fig. 6, the length of the first sub-pixel aperture 131 is H1, and the length of the second sub-pixel aperture 132 is H2. In the second direction, the length of the second sub-pixel opening 132 is greater than the length of the first sub-pixel opening 131, i.e., H2 > H1. In the embodiment of the present invention, the width of the second sub-pixel opening 132 is increased in the first direction, and the length of the second sub-pixel opening 132 is also increased in the second direction, so that the sub-pixel opening area in the second region 102 is increased, the decrease of the transmittance of the second region 102 due to the increase of the width of the light-shielding strip in the second region 102 is improved, and the difference of the transmittance of the first region 101 and the second region 102 is reduced.
Fig. 7 is a partial structure top view of a color filter substrate in another curved display panel provided in an embodiment of the present invention in a flattened state, fig. 8 is a schematic cross-sectional structure view along a direction BB' in fig. 7, and it should be noted that fig. 8 is a partial structure cross-sectional view of a color filter substrate in a curved display panel in a flattened state, referring to fig. 7 and fig. 8, the color filter substrate 1 further includes a color resist layer, the color resist layer includes a plurality of color resists 14, and the color resists 14 are located in sub-pixel openings 13 (including a first sub-pixel opening 131 and a second sub-pixel opening 132). The plurality of color resists 14 includes a first color resist 141 that transmits a first color, a second color resist 142 that transmits a second color, and a third color resist 143 that transmits a third color. In the first region 101, any one of the rows of color resistors 14 arranged in the first direction includes a first color resistor 141, a second color resistor 142, and a third color resistor 143. The color resists 14 of the same color are repeatedly arranged in the second direction. In the second region, any one row of color resistors 14 arranged in the first direction includes a first color resistor 141, a second color resistor 142 and a third color resistor 143, and any one column of color resistors 14 arranged in the second direction includes at least two of the first color resistor 141, the second color resistor 142 and the third color resistor 143. In the embodiment of the present invention, by setting the pixel structure of the second region 102 to be a rainbow pixel structure (i.e., a rainbow pixel structure), the color resists 14 in the same column in the rainbow pixel structure have different colors. Since the width of the second light-shielding bar 122 is greater than the width of the first light-shielding bar 121, the width of the second sub-pixel opening 132 is greater than the width of the first sub-pixel opening 131, and the number of pixels per inch (i.e., PPI) in the second region 102 is less than the number of pixels per inch in the first region 101 in the first direction, the pixel structure of the second region 102 is set to be a rainbow pixel structure, and then a certain algorithm is combined to make the second region 102 have a display effect with high PPI. In addition, in the rainbow pixel structure, the color resistor 14 with high transmittance may have a larger area, and the color resistor 14 with low transmittance may have a smaller area, for example, the transmittance of the first color resistor 141 is greater than that of the second color resistor 142, the transmittance of the second color resistor 142 is greater than that of the third color resistor 143, the area of the first color resistor 141 is greater than that of the second color resistor 142, and the area of the second color resistor 142 is greater than that of the third color resistor 143, so as to increase the transmittance of the second region 102, further improve the decrease of the transmittance of the second region 102 caused by increasing the width of the light-shielding strip in the second region 102, balance the transmittances of the first region 101 and the second region 102, and make the transmittances of the first region 101 and the second region 102 consistent.
Exemplarily, referring to fig. 7 and 8, the first region 101 is provided with a plurality of first color resistance units 151, and each of the first color resistance units 151 includes a first color resistance 141, a second color resistance 142, and a third color resistance 143. In the same first color resistor unit 151, the first color resistor 141, the second color resistor 142 and the third color resistor 143 are arranged along a first direction. The plurality of first color resist units 151 are arranged in a matrix along the first direction and the second direction. The second region 102 is provided with a plurality of second color resist units 152. In the same second color resistor unit 152, each row includes a first color resistor 141, a second color resistor 142 and a third color resistor 143, and each column includes a first color resistor 141, a second color resistor 142 and a third color resistor 143. The plurality of second color resist units 152 are arranged in a matrix along the first direction and the second direction. The pixel structure of the second region 102 is configured as a rainbow pixel structure (i.e., a rainbow pixel structure), and a certain algorithm is combined to make the second region 102 have a display effect with a high PPI.
Fig. 9 is a partial structure top view of a color filter substrate in another curved display panel according to an embodiment of the present invention in a flattened state, fig. 10 is a schematic cross-sectional structure along a CC' direction in fig. 9, referring to fig. 9 and fig. 10, the color filter substrate 1 further includes a color resist layer, the color resist layer includes a plurality of color resists 14, and the color resists 14 are located in the sub-pixel openings 13. The plurality of color resistors 14 includes a first color resistor 141 transmitting a first color, a second color resistor 142 transmitting a second color, a third color resistor 143 transmitting a third color, and a transparent highlight color resistor 144. The highlight color resistance refers to a color resistance with high transmittance, and is usually a white color resistance or a yellow color resistance, and in this embodiment, the highlight color resistance 144 is only used as the white color resistance for illustration. The white color resistor has no absorption of light passing through it, i.e., light passing through the white color resistor has no energy loss, and a light beam that is white before passing through the white color resistor remains white after passing through the white color resistor. Optionally, the color filter substrate 1 may further include a planarization layer 16, the planarization layer 16 is located on the color resist layer and a side of the black matrix 12 away from the first substrate 11, a light-absorbing color resist material is not disposed at the position of the white color resist, and the transparent planarization layer 16 fills the second sub-pixel opening 132 at the position of the white color resist. In the first region 101, any one of the rows of color resistors 14 arranged in the first direction includes a first color resistor 141, a second color resistor 142, and a third color resistor 143. The color resists 14 of the same color are repeatedly arranged in the second direction. In the second region 102, the plurality of color resistors 14 includes a first color resistor 141, a second color resistor 142, a third color resistor 143, and a highlight color resistor 144. Alternatively, the first color resistor 141 may be a red color resistor for transmitting red, the second color resistor 142 may be a green color resistor for transmitting green, and the third color resistor 143 may be a blue color resistor for transmitting blue. In the embodiment of the present invention, by setting the pixel structure of the second region 102 to be an RGBW pixel structure, the white color resistance does not absorb light, so that the transmittance of the second region 102 is increased, the decrease of the transmittance of the second region 102 due to the increase of the width of the light-shielding strip in the second region 102 is improved, the transmittances of the first region 101 and the second region 102 are equalized, and the transmittances of the first region 101 and the second region 102 are consistent.
Exemplarily, referring to fig. 9 and 10, the first region 101 is provided with a plurality of first color resistance units 151, and each of the first color resistance units 151 includes a first color resistance 141, a second color resistance 142, and a third color resistance 143. In the same first color resistor unit 151, the first color resistor 141, the second color resistor 142 and the third color resistor 143 are arranged along a first direction. The plurality of first color resist units 151 are arranged in a matrix along the first direction and the second direction. The second region 102 is provided with a plurality of third color-resisting units 153. In the same third color resistor unit 153, the color resistors 14 in one part of the rows include a first color resistor 141, a second color resistor 142 and a third color resistor 143, the color resistors 14 in the other part of the rows include a first color resistor 141, a second color resistor 142 and a highlight color resistor 144, the color resistors 14 of the same color in one part of the columns are repeatedly arranged, and the color resistors 14 in the other part of the columns include color resistors 14 of at least two colors. The pixel structure of the second region 102 is configured as an RGBW pixel structure, and the high brightness color resistor 144 (which is still exemplified as a white color resistor) has no absorption of light, so as to improve the transmittance of the second region 102.
fig. 11 is a schematic top view of the curved display panel shown in fig. 1, where the array substrate 2 is in a flattened state, and referring to fig. 11, the array substrate includes a second substrate 21, and a plurality of first signal lines 221 and a plurality of second signal lines 222 located on a side of the second substrate 21 facing the color filter substrate 1, the plurality of first signal lines 221 extend along a first direction and are arranged along a second direction, and the plurality of second signal lines 222 extend along the second direction and are arranged along the first direction. The first signal line 221 and the second signal line 222 are disposed around the sub-pixel opening 13. Illustratively, the first signal line 221 is a scan line, and the second signal line 222 is a data line. The pitch between two adjacent second signal lines 222 in the second region 102 is equal to the pitch between two adjacent second signal lines 222 in the first region 101. In the embodiment of the present invention, the distance between two adjacent second signal lines 222 in the second region 102 is equal to the distance between two adjacent second signal lines 222 in the first region 101, and the array substrate 2 can be implemented by using an original panel manufacturing technology, so that the manufacturing difficulty of the curved display panel is reduced.
in other embodiments, the distance between two adjacent second signal lines 222 in the second region 102 may also be greater than the distance between two adjacent second signal lines 222 in the first region 101. In the first direction, the first sub-pixel opening 131 in the first region 101 has a smaller width, and the distance between two adjacent second signal lines 222 is smaller; the second sub-pixel openings 132 in the second region 102 have a larger width, and the distance between two adjacent second signal lines 222 is larger. Therefore, the distance between two adjacent second signal lines 222 is matched with the sub-pixel opening 13 (including the first sub-pixel opening 131 and the second sub-pixel opening 132), and the occurrence of dark-state light leakage is further avoided.
Fig. 12 is a schematic perspective view of a curved display panel according to an embodiment of the present invention, and fig. 13 is a schematic sectional view DD' in fig. 12, and referring to fig. 12 and fig. 13, in a first direction, a first region 101 is located between two second regions 102. The first region 101 and the second region 102 are both curved surfaces. The curvature of the second region 102 of the curved display panel is greater than the curvature of the first region 101 of the curved display panel. The curved display panel is curved around the same bending axis L1 in both the first area 101 and the second area 102.
exemplarily, referring to fig. 12 and 13, in the first direction, the first region 101 is a central region of the curved display panel, and the second region 102 is both side edge regions of the curved display panel. The center of curvature of the curved portion of the curved display panel is located on the light-emitting display side of the curved display panel. The curved display panel includes an array substrate 2 and a color filter substrate 1, the array substrate 2 protrudes toward the color filter substrate 1, that is, the bending axis L1 is located on a side of the array substrate 2 away from the color filter substrate 1, so as to form the curved display panel shown in fig. 12 and 13
Illustratively, referring to fig. 12 and 13, the region boundary line L2 extends in the second direction, and the region boundary line L2 is a boundary line between the first region 101 with a smaller curvature and the second region 102 with a larger curvature, and the curvature of the curved display panel gradually decreases from the region boundary line L2 toward the central axis side of the first region 101, and gradually increases from the region boundary line L2 toward the second region 102 side.
Optionally, referring to fig. 13, the curved display panel may further include a frame sealing adhesive 31 and a liquid crystal layer 32, the frame sealing adhesive 31 is disposed on an edge of the second region 102 of the curved display panel, the edge being away from the first region 101, the array substrate 2, the color film substrate 1 and the frame sealing adhesive 31 form a closed accommodating cavity, and the liquid crystal layer 32 is located in the accommodating cavity. The liquid crystal layer 32 is located between the array substrate 2 and the color film substrate 1, and the liquid crystal layer may include positive liquid crystal molecules or negative liquid crystal molecules, and may be specifically set according to product requirements, which is not limited in the embodiment of the present invention.
the embodiment of the invention also provides a display device. Fig. 14 is a schematic perspective view of a display device according to an embodiment of the present invention, fig. 15 is a schematic cross-sectional view of EE' in fig. 14, and referring to fig. 14 and fig. 15, the display device includes any curved display panel 3 according to an embodiment of the present invention. The display device can be a mobile phone, a tablet computer, an intelligent wearable device and the like. The display device may also be an in-vehicle display device. For example, the display content is projected on the windshield of the automobile through various devices by the display device, so that the automobile driver can see various items of information such as instrument parameters without lowering head during driving the automobile.
Optionally, referring to fig. 14 and fig. 15, the display device may further include a backlight 4 facing away from the light-emitting display side of the curved display panel 3, where the backlight 4 is located on the side of the array substrate 2 away from the color film substrate 1 and is used to provide light rays required for displaying for the curved display panel 3.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. a curved display panel comprising a first region and a second region arranged in a first direction, the curved display panel being curved about a curved axis, the curved axis being parallel to a second direction, the second direction being transverse to the first direction; the second region has a greater bending curvature than the first region;
The curved surface display panel comprises an array substrate and a color film substrate which are oppositely arranged;
the color film substrate comprises a first substrate and a black matrix located on the first substrate and facing the array substrate, the black matrix comprises latticed shading strips, and the latticed shading strips define a plurality of sub-pixel openings; the black matrix comprises first light-shielding strips which extend along the second direction, are arranged along the first direction and are positioned in the first area, and second light-shielding strips which extend along the second direction, are arranged along the first direction and are positioned in the second area; the plurality of sub-pixel openings include a first sub-pixel opening located in the first region and a second sub-pixel opening located in the second region;
In the first direction, the width of the second light-shielding bar is greater than that of the first light-shielding bar, and the width of the second sub-pixel opening is greater than that of the first sub-pixel opening.
2. The curved display panel of claim 1, wherein in the first direction, all the first light-shielding bars have the same width, and all the first sub-pixel openings have the same width.
3. the curved display panel of claim 1, wherein in the first direction, all the second light-shielding bars have the same width, and all the second sub-pixel openings have the same width.
4. The curved display panel of claim 1, wherein the boundary between the first region and the second region is a region boundary;
In the first direction, the width of the second light-shielding bar gradually increases with the distance from the region boundary, and the width of the second sub-pixel opening gradually increases with the distance from the region boundary.
5. the curved display panel of claim 1, wherein in the first direction, the maximum width of the first light-shielding bars is DM1, and the minimum width of the second light-shielding bars is DM2, 0.5 μm < DM2-DM1 < 1 μm.
6. The curved display panel of claim 1, wherein in the first direction, the width of the first light-shielding bar is D1, the width of the first sub-pixel opening adjacent to the first light-shielding bar and located on the side of the first light-shielding bar adjacent to the second region is P1, the width of the second light-shielding bar is D2, and the width of the second sub-pixel opening adjacent to the second light-shielding bar and located on the side of the second light-shielding bar away from the first region is P2, D1/P1 is D2/P2.
7. The curved display panel according to claim 1, wherein the array substrate comprises a second substrate, and a plurality of first signal lines and a plurality of second signal lines on a side of the second substrate facing the color filter substrate, wherein the plurality of first signal lines extend along a first direction and are arranged along a second direction, and the plurality of second signal lines extend along the second direction and are arranged along the first direction; the first signal line and the second signal line are arranged around the sub-pixel opening;
The distance between two adjacent second signal lines in the second region is greater than or equal to the distance between two adjacent second signal lines in the first region.
8. The curved display panel of claim 1, wherein the second sub-pixel opening has a length greater than a length of the first sub-pixel opening in the second direction.
9. The curved display panel of claim 1, wherein the color filter substrate further comprises a color resist layer, the color resist layer comprises a plurality of color resists, and the color resists are located in the sub-pixel openings; the plurality of color resists comprise a first color resist transmitting a first color, a second color resist transmitting a second color, and a third color resist transmitting a third color;
in the first region, any row of the color resistors arranged along the first direction comprises the first color resistor, the second color resistor and the third color resistor; the color resistors with the same color are repeatedly arranged along the second direction;
In the second region, any row of the color resists arranged along the first direction includes the first color resist, the second color resist and the third color resist, and any column of the color resists arranged along the second direction includes at least two of the first color resist, the second color resist and the third color resist.
10. The curved display panel of claim 1, wherein the color filter substrate further comprises a color resist layer, the color resist layer comprises a plurality of color resists, and the color resists are located in the sub-pixel openings; the color resistors comprise a first color resistor transmitting a first color, a second color resistor transmitting a second color, a third color resistor transmitting a third color and a transparent highlight color resistor;
In the first region, any row of the color resistors arranged along the first direction comprises the first color resistor, the second color resistor and the third color resistor; the color resistors with the same color are repeatedly arranged along the second direction;
in the second region, the plurality of color resistances includes the first color resistance, the second color resistance, the third color resistance, and the highlight color resistance.
11. The curved display panel of claim 1, wherein in the first direction, the first area is located between two of the second areas;
The first area is a plane, and the second area is a curved surface.
12. the curved display panel of claim 1, wherein in the first direction, the first area is located between two of the second areas;
The first area and the second area are both curved surfaces.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
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