CN107861286B - Display panel - Google Patents

Display panel Download PDF

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Publication number
CN107861286B
CN107861286B CN201711297805.7A CN201711297805A CN107861286B CN 107861286 B CN107861286 B CN 107861286B CN 201711297805 A CN201711297805 A CN 201711297805A CN 107861286 B CN107861286 B CN 107861286B
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China
Prior art keywords
display panel
data line
light
region
center line
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CN201711297805.7A
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CN107861286A (en
Inventor
应见见
董成才
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TCL Huaxing Photoelectric Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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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
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element

Abstract

The invention discloses a display panel which comprises an array substrate, a color film substrate arranged opposite to the array substrate and a liquid crystal layer arranged between the array substrate and the color film substrate, wherein the array substrate comprises a first substrate, a data line, an insulating layer and a shading electrode, the color film substrate comprises a second substrate and a shading pattern, and the projection of the shading pattern on the plane where the data line is located corresponds to the data line so as to shade the light reflected by the data line. By adding the shading pattern on the color film substrate, the problem of light leakage of the display panel is solved.

Description

Display panel
Technical Field
The invention relates to the technical field of display, in particular to a display panel.
Background
The principle of the DBS (data Line BM less) design widely applied to products with flat bending sharing at present is that a common power Line and a data Line are jointly designed on a lower substrate, so that the deviation of the upper substrate and the lower substrate caused by the bending of a display panel can not cause the deviation of a shading electrode and the data Line, and the problem of serious side light leakage can not occur. However, in practical applications of DBS design, because the light-shielding electrode is made of ITO transparent material, light scattered by backlight or irradiated from an external light source will be reflected by the surface of the data line and then pass through the light-shielding electrode, which causes light leakage. When the display panel is in a bright state, the light leakage phenomenon caused by the reflected light is negligible, and the image quality of the display panel is less influenced.
Disclosure of Invention
The invention mainly provides a display panel, and aims to solve the problem of light leakage of a conventional flat-curved common display panel.
In order to solve the technical problems, the invention adopts the technical scheme that: the display panel comprises an array substrate, a color film substrate arranged opposite to the array substrate and a liquid crystal layer arranged between the array substrate and the color film substrate, wherein the array substrate comprises a first substrate, a data line arranged on the first substrate, an insulating layer arranged on the data line and a shading electrode arranged on the insulating layer, the color film substrate comprises a second substrate and a shading pattern arranged on the second substrate, and the projection of the shading pattern on the plane where the data line is located corresponds to the data line so as to shade the light reflected by the data line.
The invention has the beneficial effects that: according to the display panel, the data lines are arranged on the array substrate, and the shading patterns are arranged on the color film substrate, so that the projection of the shading patterns on the plane where the data lines are located corresponds to the data lines, the problem of light leakage of the display panel is solved, and the contrast of the display panel is improved.
Drawings
FIG. 1 is a schematic diagram of a display panel according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a display panel according to the present invention;
FIG. 3 is a schematic view of the projection of the light blocking pattern of FIG. 1 onto the plane of the data lines;
FIG. 4 is a schematic diagram of a display panel according to the present invention for preventing light leakage;
FIG. 5 is a diagram of a display panel according to a second embodiment of the present invention;
FIG. 6 is a schematic view of the projection of the light blocking pattern of FIG. 5 onto the plane of the data lines;
FIG. 7 is a schematic diagram of a display panel according to a third embodiment of the present invention;
FIG. 8 is a schematic view of the projection of the shading pattern of FIG. 7 onto the plane of the data lines;
FIG. 9 is a diagram of a display panel according to a fourth embodiment of the present invention;
fig. 10 is a schematic view of the projection of the light shielding pattern of fig. 9 on the plane of the data line.
Detailed Description
Please refer to fig. 1 and fig. 2, which are a schematic diagram of a display panel according to a first embodiment of the present invention and a structural schematic diagram of the display panel. As shown in fig. 1, the display panel 11 includes an array substrate 2, a color filter substrate 3 disposed opposite to the array substrate 2, and a liquid crystal layer 5 disposed between the array substrate 2 and the color filter substrate 3. In order to ensure that the liquid crystal 5 does not turn over, the potential of the light-shielding electrode 24 and the potential of the common electrode of the color filter substrate 3 are set to the same potential. The light shielding electrode 24 plays a role of shielding light when light emitted from the backlight 4 or external light passes through the array substrate 2 to the side of the data line 22 to shield a light leakage region near the data line 22. The light-shielding electrode 24 is made of an indium tin oxide semiconductor transparent conductive film material, hereinafter referred to as an ITO material.
As shown in fig. 2, the array substrate 2 includes a first substrate 21, a data line 22 disposed on the first substrate 21, an insulating layer 23 disposed on the data line 22, and a light-shielding electrode 24 disposed on the insulating layer 23, and the pixel electrode 25 and the light-shielding electrode 24 are disposed in the same layer. The color filter substrate 3 includes a second substrate 31 and a light shielding pattern 32 disposed on the second substrate 31, and a projection of the light shielding pattern 32 on a plane where the data line 22 is located corresponds to the data line 22, so as to shield light reflected by the data line 22. The width of the light-shielding pattern 32 is smaller than the width of the corresponding data line 22, and the width of the light-shielding pattern 32 is smaller than the difference between the width of the data line 22 and the twice maximum value of the shift, wherein the maximum value of the shift is a shift value when the array substrate 2 and the color film substrate 3 are aligned; the width of the light shielding electrode 24 is greater than or equal to the width of the data line 22. In this embodiment, other structures on the array substrate 2 and the color filter substrate 3 are the same as those on the existing array substrate and color filter substrate, and are not described herein again.
Fig. 3 is a schematic view of a projection of a light-shielding pattern on a plane where data lines are located in a display panel according to the present invention. In the present embodiment, the light shielding pattern 32 is disposed in a center with respect to the data line 22, so as to ensure that the projection of the light shielding pattern 32 with respect to the data line 22 can also be kept in the center to shield the light. The light-shielding pattern 32 is a black matrix, i.e., the center line of the black matrix coincides as much as possible with the center line L1 of the data line 22.
Fig. 4 is a schematic diagram illustrating the principle of light leakage prevention of the display panel according to the present invention. When the light scattered by the backlight 4 or irradiated by the external light source is reflected by the surface of the data line 22 and then passes through the light shielding electrode 24, the light source is shielded by the black matrix to avoid light leakage, and when the display panel 11 is in a dark state, the contrast ratio is improved, and the negative effect of influencing the picture transmittance is avoided. The present embodiment is applicable to display screens of most sizes.
When the display panel is a curved surface, the curved portion of the display panel may cause a relative left-right position shift between the array substrate 2 and the color filter substrate 3, so that the projection of the light-shielding pattern 32 relative to the data line 22 may not be kept centered and may shift left and right, at this time, scattering of the backlight 4 or reflection of an external light source occurs, the black matrix may not be completely shielded, and thus, the light leakage phenomenon still occurs.
Please refer to fig. 5, which is a diagram illustrating a display panel according to a second embodiment of the present invention. The second embodiment differs from the first embodiment in that: in this embodiment, the display panel 12 is a curved surface, and the display panel 12 is divided into a first region 121, a second region 122, and a third region 123 according to left, middle, and right positions. The left side of the display panel 12 is located near the left edge 12L as a first region 121, the middle of the display panel 12 is located as a second region 122, the right side of the display panel 12 is located near the right edge 12R as a third region 123, wherein the first region 121 and the third region 123 are curved portions, and the second region 122 is a straight portion.
Fig. 6 is a schematic view of a projection of a light-shielding pattern on a plane where data lines are located in a display panel according to the present invention. In this embodiment, a positional deviation occurs between the array substrate 2 and the color filter substrate 3 in the first region 121 on the left side and the third region 123 on the right side. In the first region 121, the color filter substrate 3 is shifted to the left with respect to the array substrate 2, so the center line L2 of the light-shielding pattern 32 in the left region of the display panel 12, i.e., the first region 121, is disposed in the right region of the center line L1 of the data line 22, but does not exceed the boundary of the data line 22, or overlaps the side edge of the data line 22. In the third region 123, the color filter substrate 3 is shifted to the right with respect to the array substrate 2, so the center line L2 of the light-shielding pattern 32 in the right region of the display panel 12 is disposed in the left region of the center line L1 of the data line 22, but does not exceed the boundary of the data line 22, or overlaps the side edge of the data line 22. In addition, in this embodiment, the widths of the light-shielding patterns 32 in the first, second, and third regions 121, 122, 123 are smaller than the difference between the width of the data line 22 and twice the maximum shift value, where the maximum shift value is a shift value when the array substrate 2 and the color filter substrate 3 are aligned; the width of the light shielding electrode 24 is greater than or equal to the width of the data line 22.
In this embodiment, the distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 to the center line L1 corresponding to the data line 22, where the first region 121 of the display panel 12 is close to the left edge 12L of the display panel 12, is greater than the distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3, where the first region 121 of the display panel 12 is far from the left edge 12L of the display panel 12, to the center line L1 corresponding to the data line 22, that is, the closer to the left edge 12L of the display panel 12, the greater the shift between the color filter substrate 3 and the array substrate 2 occurs, so the center line L2 of the light-shielding pattern 32 of the first region 121 of the display panel 12 is located to the right of the center line L1 of the data line 22; the distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 of the third area 123 of the display panel 12, which is close to the right edge 12R of the display panel 12, to the center line L1 of the corresponding data line 22 is greater than the distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 of the third area 123 of the display panel 12, which is far from the right edge 12R of the display panel 12, to the center line L1 of the corresponding data line 22, that is, the closer to the right edge 12R of the display panel 12, the greater the displacement between the color filter substrate 3 and the array substrate 2 occurs, so the center line L2 of the light-shielding pattern 32 of the third area 123 of the display panel 12 is located closer to the left of the center line L1 of the.
In the present embodiment, the second region 122 has almost no bending deformation, so that the second region 122; the light shielding pattern 32 is disposed centrally with respect to the data line 22, that is, the central line L2 of the light shielding pattern 32 and the central line L1 of the data line 22 are overlapped as much as possible, when the light scattered by the backlight 4 or irradiated by an external light source will strike the surface of the data line 22 to be reflected and then pass through the light shielding electrode 24, no matter at any position of the curved display panel, the part of the light source will be shielded by the black matrix, thereby avoiding the light leakage phenomenon, when the display panel 12 is in a dark state, the contrast ratio thereof is improved, and the negative effect of affecting the panel transmittance will not occur. The present embodiment is applicable to display screens of most sizes.
Please refer to fig. 7, which is a diagram illustrating a display panel according to a third embodiment of the present invention. The third embodiment is different from the second embodiment in that the display panel 13 is a single-sided curved surface in the present embodiment, that is, in which the third region 133 is a curved portion and the rest is a straight portion.
Fig. 8 is a schematic view of a projection of a light-shielding pattern on a plane where data lines are located in a display panel according to the present invention. Since the curved surface is on the right side of the display panel 13, that is, the third region 133 is a curved surface portion. The color filter substrate 3 in the third region 133 is shifted to the right with respect to the array substrate 2, so the central line L2 of the light shielding pattern 32 in the right region of the display panel 13 is disposed in the left region of the central line L1 of the data line 22, but does not exceed the boundary of the data line 22, or overlaps the side edge of the data line 22; the first and second regions 131 and 132 are not bent, and thus, the light shielding pattern 32 of the first and second regions 131 and 132 is centrally disposed with respect to the data line 22, i.e., a center line L2 of the light shielding pattern 32 coincides with a center line L1 of the data line 22. Moreover, the widths of the light-shielding patterns 32 in the first, second, and third regions 131, 132, and 133 are smaller than the difference between the width of the data line 22 and twice the maximum shift value, where the maximum shift value is a shift value when the array substrate 2 and the color filter substrate 3 are aligned; the width of the light shielding electrode 24 is greater than or equal to the width of the data line 22. The distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 to the center line L1 of the corresponding data line 22, which is closer to the right edge 13R of the display panel 13 in the third region 133 of the display panel 13, is greater than the distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 to the center line L1 of the corresponding data line 22, which is more distant from the right edge 13R of the display panel 13 in the third region 133 of the display panel 13, that is, the closer to the right edge 13R of the display panel 13, the greater the displacement between the color filter substrate 3 and the array substrate 2 occurs. Since the first and second regions 131 and 132 are hardly deformed by bending, the light shielding patterns 32 of the first and second regions 131 and 132 are centered with respect to the data line 22, that is, the center line L2 of the light shielding pattern 32 coincides with the center line L1 of the data line 22. When light scattered by the backlight 4 or irradiated by an external light source is reflected by the surface of the data line 22 and then passes through the light shielding electrode 24, no matter at any position of the curved display panel, the light source is shielded by the black matrix, so that the light leakage phenomenon is avoided, when the display panel 13 is in a dark state, the contrast ratio is improved, and the negative influence on the face transmittance is avoided. The present embodiment is applicable to display screens of most sizes.
Please refer to fig. 9, which is a diagram illustrating a display panel according to a fourth embodiment of the present invention. The fourth embodiment is different from the above-described second embodiment in that: in the present embodiment, the display panel 14 is a single-sided curved surface, i.e., a curved portion in the first region 141 and a flat portion in the rest.
Fig. 10 is a schematic view of a projection of a light-shielding pattern on a plane where data lines are located in a display panel according to the present invention. Since the curved surface is on the left side of the display panel 14, the first region 141 is a curved surface portion. The color filter substrate 3 in the first region 141 is shifted to the left with respect to the array substrate 2, so the central line L2 of the light shielding pattern 32 in the left region of the display panel 14 is disposed in the right region of the central line L1 of the data line 22, but does not exceed the boundary of the data line 22, or overlaps the side edge of the data line 22; since the second region 142 and the third region 143 are not bent, the light-shielding patterns 32 of the second region 142 and the third region 143 are centered with respect to the data line 22, that is, the center line L2 of the light-shielding patterns 32 and the center line L1 of the data line 22 overlap as much as possible. The distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 of the first region 141 of the display panel 14 close to the left edge 14L of the display panel 14 to the center line L1 of the corresponding data line 22 is greater than the distance from the center line L2 of the light-shielding pattern 32 on the color filter substrate 3 of the first region 141 of the display panel 14 far from the left edge 14L of the display panel 14 to the center line L1 of the corresponding data line 22, that is, the closer to the left edge 14L of the display panel 14, the larger the deviation between the color filter substrate 3 and the array substrate 2 occurs. Moreover, the widths of the light-shielding patterns 32 in the first, second, and third regions 141, 142, and 143 are smaller than the difference between the width of the data line 22 and twice the maximum shift value, where the maximum shift value is a shift value when the array substrate 2 and the color filter substrate 3 are aligned; the width of the light shielding electrode 24 is greater than or equal to the width of the data line 22.
When light scattered by the backlight 4 or irradiated by an external light source is reflected by the surface of the data line 22 and then passes through the light shielding electrode 24, no matter at any position of the curved display panel, the light source is shielded by the black matrix, so that the light leakage phenomenon is avoided, when the display panel 14 is in a dark state, the contrast ratio is improved, and the negative influence on the face transmittance is avoided. The present embodiment is applicable to display screens of most sizes.
According to the display panel, the data lines are arranged on the array substrate, and the shading patterns are arranged on the color film substrate, so that the projection of the shading patterns on the plane where the data lines are located corresponds to the data lines, the problem of light leakage of the display panel is solved, and the contrast of the display panel is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A display panel is characterized by comprising an array substrate, a color film substrate arranged opposite to the array substrate and a liquid crystal layer arranged between the array substrate and the color film substrate, wherein the array substrate comprises a first substrate, a data line arranged on the first substrate, an insulating layer arranged on the data line and a shading electrode arranged on the insulating layer; the width of the shading pattern is smaller than the difference between the width of the data line and a double displacement maximum value, wherein the displacement maximum value is a displacement value when the array substrate and the color film substrate are aligned.
2. The display panel according to claim 1, wherein the light shielding pattern is disposed in a center with respect to the data line.
3. The display panel according to claim 1, wherein the display panel is provided with a first region, a second region and a third region, the first region is located at a left position of the display panel and near a left edge of the display panel, the third region is located at a right position of the display panel and near a right edge of the display panel, and the second region is located at a middle position of the display panel and between the first region and the third region.
4. The display panel according to claim 3, wherein a center line of the light-shielding pattern on the color filter substrate in the first region of the display panel is located on a right side of a center line corresponding to the data line, a center line of the light-shielding pattern on the color filter substrate in the third region of the display panel is located on a left side of a center line corresponding to the data line, and the light-shielding pattern on the color filter substrate in the second region of the display panel is centered with respect to the data line.
5. The display panel according to claim 3, wherein a distance from a center line of the light-shielding pattern on the color filter substrate in the first region of the display panel, which is close to the left edge of the display panel, to a center line corresponding to the data line is greater than a distance from a center line of the light-shielding pattern on the color filter substrate in the first region of the display panel, which is far from the left edge of the display panel, to a center line corresponding to the data line; the distance from the center line of the shading pattern on the color film substrate, close to the right edge of the display panel, of the third area of the display panel to the center line corresponding to the data line is greater than the distance from the center line of the shading pattern on the color film substrate, far away from the right edge of the display panel, of the third area of the display panel to the center line corresponding to the data line.
6. The display panel according to claim 4, wherein a side edge of the light-shielding pattern on the color film substrate of the first region of the display panel, which is close to the left edge of the display panel, coincides with a side edge corresponding to the data line; and the side edge of the shading pattern on the color film substrate, close to the right edge of the display panel, of the third area of the display panel is superposed with the side edge corresponding to the data line.
7. The display panel according to claim 3, wherein a center line of the light-shielding pattern on the color filter substrate in the first region of the display panel is located on the right side of the center line corresponding to the data line, and the light-shielding patterns on the color filter substrates in the second and third regions of the display panel are centered with respect to the data line; the distance from the central line of the shading pattern on the color film substrate, close to the left edge of the display panel, of the first area of the display panel to the central line corresponding to the data line is greater than the distance from the central line of the shading pattern on the color film substrate, far away from the left edge of the display panel, of the first area of the display panel to the central line corresponding to the data line; the side edge of the shading pattern on the color film substrate, close to the left edge of the display panel, of the first area of the display panel is overlapped with the side edge corresponding to the data line.
8. The display panel according to claim 3, wherein a center line of the light-shielding pattern on the color filter substrate in the third area of the display panel is located on the left side of the center line corresponding to the data line, and the light-shielding patterns on the color filter substrates in the second area and the first area of the display panel are centered with respect to the data line; the distance from the center line of the shading pattern on the color film substrate, close to the right edge of the display panel, of the third area of the display panel to the center line corresponding to the data line is greater than the distance from the center line of the shading pattern on the color film substrate, far away from the right edge of the display panel, of the third area of the display panel to the center line corresponding to the data line; and the side edge of the shading pattern on the color film substrate, close to the right edge of the display panel, of the third area of the display panel is superposed with the side edge corresponding to the data line.
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Patentee after: TCL Huaxing Photoelectric Technology Co.,Ltd.

Address before: No.9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province

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