CN112394567A

CN112394567A - Liquid crystal display panel and display device

Info

Publication number: CN112394567A
Application number: CN202011459876.4A
Authority: CN
Inventors: 李雅缨; 王海亮; 曾晓岚; 廖晋元; 关琳燕; 杨雁; 周婷; 李俊谊
Original assignee: Xiamen Tianma Microelectronics Co Ltd
Current assignee: Xiamen Tianma Microelectronics Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-02-23
Anticipated expiration: 2040-12-11
Also published as: CN112394567B

Abstract

The invention provides a liquid crystal display panel and a display device, wherein the liquid crystal display panel comprises a display area, and the display area comprises a first display area and a light sensation element setting area; a substrate; the pixel structure comprises a plurality of gate lines, a plurality of data lines and thin film transistors, wherein the gate lines and the data lines are crossed to define a plurality of sub-pixels; the thin film transistor comprises a first electrode, a second electrode and a control electrode, the control electrode is electrically connected with the gate line, and the first electrode is electrically connected with the data line; the black matrix is positioned on one side of the gate line, the data line and the thin film transistor, which is far away from the substrate; the black matrix comprises a plurality of black matrix blocks positioned in the light sensing element arrangement area, the plurality of black matrix blocks cover the first pole and the second pole in the direction vertical to the substrate, and the distance between two black matrix blocks overlapped with different thin film transistors is larger than zero. The invention provides a liquid crystal display panel and a display device, which are used for improving the transmittance of a light sensation element arrangement area under the condition of not reducing the pixel density.

Description

Liquid crystal display panel and display device

Technical Field

The invention relates to the technical field of display, in particular to a liquid crystal display panel and a display device.

Background

With the development of scientific technology and the progress of society, people increasingly depend on the aspects of information communication and transmission, and display devices as main carriers and material bases for information exchange and transmission become hot spots of research of many scientists.

In order to realize functions such as image capturing, it is often necessary to place a light sensing element in a light sensing element placement area of a liquid crystal display panel. The external environment light can be transmitted to the light sensing element through the light sensing element arrangement area, and functions such as camera shooting are achieved. The light sensing element setting area can also display images, so that full-screen display is realized. However, when displaying an image, the low PPI (i.e., pixel density) in the image pickup region results in a strong granular image quality and a rough image quality. The PPI in the image pickup region is increased, and the transmittance of the light sensing element setting region is reduced.

Disclosure of Invention

The invention provides a liquid crystal display panel and a display device, which are used for improving the transmittance of a light sensation element arrangement area under the condition of not reducing the pixel density.

In a first aspect, an embodiment of the present invention provides a liquid crystal display panel, including a display area, where the display area includes a first display area and a light sensing element installation area, and the first display area at least partially surrounds the light sensing element installation area;

a substrate;

the gate lines extend along a first direction and are arranged along a second direction, the data lines extend along the second direction and are arranged along the first direction, and the gate lines and the data lines are crossed to define a plurality of sub-pixels; the thin film transistor comprises a first electrode, a second electrode and a control electrode, the control electrode is electrically connected with the gate line, and the first electrode is electrically connected with the data line;

the black matrix is positioned on one side, far away from the substrate, of the gate line, the data line and the thin film transistor; the black matrix comprises a plurality of black matrix blocks located in the light sensation element arrangement area, the plurality of black matrix blocks cover the first pole and the second pole in the direction perpendicular to the substrate, and the distance between two black matrix blocks overlapped with different thin film transistors is larger than zero.

In a second aspect, an embodiment of the present invention provides a display device, including the liquid crystal display panel according to the first aspect.

In the embodiment of the invention, in the first display area, a black matrix is normally arranged, that is, a grid-shaped black matrix is arranged, the openings of the grid-shaped black matrix are used as pixel opening areas for light emitting display, the grid-shaped black matrix comprises a plurality of black matrix strips which are crossed along a first direction and a second direction, and the black matrix strips cover the gate lines, the data lines, the first poles of the thin film transistors and the second poles of the thin film transistors. In the light sensing element setting area, the black matrix blocks cover the first pole and the second pole of the thin film transistor, and the two black matrix blocks covering different thin film transistors are arranged at intervals, so that a gap exists between the two adjacent black matrix blocks covering different thin film transistors, and the gap can be used for passing through external environment light, so that the transmittance of the light sensing element setting area is improved under the condition that the pixel density is not reduced.

Drawings

Fig. 1 is a schematic top view of an lcd panel according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the region S1 in FIG. 1;

FIG. 3 is a schematic top view of a black matrix corresponding to the sub-pixel arrangement shown in FIG. 2;

FIG. 4 is an enlarged schematic view of the area S2 in FIG. 3;

FIG. 5 is a schematic cross-sectional view along the direction AA' in FIG. 3;

FIG. 6 is a schematic diagram of a top view structure of another LCD panel according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view taken along the direction BB' in FIG. 6;

FIG. 8 is a schematic diagram of a top view structure of another LCD panel according to an embodiment of the present invention;

fig. 9 is a schematic top view of another lcd panel according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a top view structure of another LCD panel according to an embodiment of the present invention;

fig. 11 is a schematic top view of another lcd panel according to an embodiment of the present invention;

fig. 12 is a schematic top view of another lcd panel according to an embodiment of the present invention;

fig. 13 is a schematic top view of another lcd panel according to an embodiment of the present invention;

FIG. 14 is a schematic top view of a black matrix corresponding to the sub-pixel arrangement shown in FIG. 13;

fig. 15 is a schematic structural diagram of a display device according to an embodiment of the present invention.

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 top view structure diagram of an lcd panel according to an embodiment of the present invention, fig. 2 is an enlarged schematic top view diagram of an area S1 in fig. 1, fig. 3 is a schematic top view diagram of a black matrix corresponding to the arrangement of sub-pixels shown in fig. 2, fig. 4 is an enlarged schematic top view diagram of an area S2 in fig. 3, referring to fig. 1 to fig. 5, the lcd panel includes a display area 100, the display area 100 includes a first display area 101 and a light sensing element disposing area 102, and the first display area 101 at least partially surrounds the light sensing element disposing area 102. When the ambient light irradiates the light sensing element installation region 102, the ambient light can pass through the light sensing element installation region 102 and irradiate the backlight side of the liquid crystal display panel. The liquid crystal display panel includes a substrate 11, a plurality of gate lines 21, a plurality of data lines 22, and a thin film transistor 23. The plurality of gate lines 21, the plurality of data lines 22, and the thin film transistors 23 are located on the same side of the substrate 11. The plurality of gate lines 21 extend in a first direction and are arranged in a second direction, the plurality of data lines 22 extend in the second direction and are arranged in the first direction, and the plurality of gate lines 21 and the plurality of data lines 22 intersect to define a plurality of sub-pixels 30. The thin film transistor 23 includes a first electrode 231, a second electrode 232, and a control electrode 233, the control electrode 233 is electrically connected to the gate line 21, and the first electrode 231 is electrically connected to the data line 22.

The liquid crystal display panel further includes a black matrix 50, and the black matrix 50 is located on a side of the gate line 21, the data line 22, and the thin film transistor 23 away from the substrate 11. The black matrix 50 includes a plurality of black matrix blocks 53 disposed in the light sensing element disposition region 102. The light sensing element arrangement region 102 has the black matrix block 53 disposed therein, and the black matrix block 53 is not disposed in the first display region 101. The plurality of black matrix blocks 53 cover the first and

second poles

231 and 232 in a direction perpendicular to the substrate 11. The distance between two black matrix blocks 53 overlapping different thin film transistors 23 is greater than zero in the direction perpendicular to the substrate 11. That is, at least one black matrix block 53 is disposed corresponding to each of the tfts 23, and the at least one black matrix block 53 covers the first and

second electrodes

231 and 232 of the tft 23. Different thin film transistors 23 are covered by different black matrix blocks 53.

In the first display region 101, the black matrix 50 is normally disposed, that is, a grid-shaped black matrix is disposed, the openings of the grid-shaped black matrix are pixel opening regions for light emitting display, the grid-shaped black matrix includes a plurality of black matrix stripes crossing in the first direction and the second direction, and the black matrix stripes cover the gate lines 21, the data lines 22, the first electrodes 231 of the thin film transistors 23, and the second electrodes 232 of the thin film transistors 23. In the light sensing element disposing region 102, the black matrix blocks 53 cover the first electrode 231 and the second electrode 232 of the thin film transistor 23, and the two black matrix blocks 53 covering different thin film transistors 23 are disposed at intervals, so that a gap exists between two adjacent black matrix blocks 53 covering different thin film transistors 23, and the gap can be used for passing through external ambient light, thereby improving the transmittance of the light sensing element disposing region 102 without reducing the pixel density.

Alternatively, referring to fig. 3 and 4, the black matrix blocks 53 include curves at the outer edge of the vertical projection of the substrate 11. In the embodiment of the present invention, the shape of the black matrix block 53 includes a curved edge, so that when the external ambient light passes through the light sensing element setting region 102, the problem of stray light caused by diffraction of the black matrix block 53 is avoided, and the accuracy of the light sensing element for acquiring an image is improved.

Illustratively, referring to fig. 3 and 4, the black matrix block 53 has a circular shape, and in other embodiments, the black matrix block 53 may have an oval shape or other figures having curved edges.

Alternatively, referring to fig. 3 and 4, the plurality of black matrix blocks 53 includes a first black matrix block 531 and a second black matrix block 532. In a direction perpendicular to the substrate 11, the first black matrix block 531 covers the first pole 231, and the second black matrix block 532 covers the second pole 232. In the embodiment of the present invention, the first black matrix 531 and the second black matrix 532 respectively cover the first electrode 231 and the second electrode 232 of the same tft 23, so as to prevent the first electrode 231 and the second electrode 232 from reflecting the external ambient light, and prevent the first electrode 231 and the second electrode 232 from being visible to the human eye. In the embodiment of the present invention, two black matrix blocks 53 are disposed to cover the first electrode 231 and the second electrode 232, respectively, and a certain gap exists between the two black matrix blocks 53 covering the same thin film transistor 23, so as to further improve the transmittance of the light sensing element disposing region 102.

Alternatively, referring to fig. 2, 3 and 4, in the light sensing element disposing region 102, the gate line 21 includes a metal material. The black matrix 50 further includes a plurality of first black matrix stripes 51, and the plurality of first black matrix stripes 51 extend in a first direction and are arranged in a second direction. The first black matrix stripe 51 covers the gate line 21 in a direction perpendicular to the substrate 11. In the embodiment of the present invention, the gate line 21 in the light sensing element disposing area 102 is made of a metal material, and the first black matrix strip 51 covers the gate line 21, so as to prevent the gate line 21 in the light sensing element disposing area 102 from reflecting the external ambient light, thereby preventing the gate line 21 in the light sensing element disposing area 102 from being visible to the human eye.

Optionally, referring to fig. 2, the display area 100 includes a plurality of pixels 310, and the pixels 310 include a plurality of sub-pixels 30 (the pixels 310 include 3 sub-pixels 30 in fig. 2 is taken as an example for illustration). The number of pixels per unit foot in the first display area 101 is equal to the number of pixels per unit foot in the light-sensing element placement area 102. In the embodiment of the invention, the first display area 101 and the light sensing element arrangement area 102 have the same pixel density, and the first display area 101 and the light sensing element arrangement area 102 have the same PPI design, so that the design difficulty of the sub-pixels 30 is simplified, the image display consistency of the light sensing element arrangement area 102 and the first display area 101 is improved, and the image display quality is improved.

Alternatively, referring to fig. 2, 3, and 4, the number of pixels per unit foot in the light sensing element arrangement area 102 is greater than or equal to 350 and less than or equal to 432. In the embodiment of the invention, the PPI in the photosensitive element disposing region 102 is greater than or equal to 350 and less than or equal to 432. The photo-sensing element arrangement region 102 has a high pixel density, and the distance between two adjacent sub-pixels 30 along the first direction is relatively small, so that the gate line 21 needs to be configured as a metal line, i.e. the gate line 21 includes a metal material, to adapt the high PPI design of the photo-sensing element arrangement region 102.

Exemplarily, referring to fig. 2, 3 and 4, in the first display region 101, the black matrix 50 includes first black matrix stripes 51 and second black matrix stripes 52, the plurality of first black matrix stripes 51 extend along a first direction and are arranged along a second direction, the plurality of second black matrix stripes 52 extend along the second direction and are arranged along the first direction, and the plurality of first black matrix stripes 51 and the plurality of second black matrix stripes 52 cross to form a grid shape. The first black matrix strip 51 covers the gate line 21, and the second black matrix strip 52 covers the data line 22. As shown in fig. 2, the first black matrix strips 51 in the light-sensing element disposing region 102 only cover the gate lines 21, and the first black matrix strips 51 in the first display region 101 cover the gate lines 21 and the first and

second poles

231 and 232 of the tfts 23, so that the width of the first black matrix strips 51 in the light-sensing element disposing region 102 is smaller than the width of the first black matrix strips 51 in the first display region 101.

Exemplarily, referring to fig. 2, 3 and 4, in the light sensing element disposition region 102, the gate line 21 and the data line 22 each include a metal material. The light sensing element disposing region 102 is further provided with a second black matrix stripe 52, and the second black matrix stripe 52 covers the data line 22 in the light sensing element disposing region 102. In other embodiments, at least one of the gate line 21 and the data line 22 may be made of a transparent conductive material to further increase the transmittance of the light sensing element disposing region 102. Correspondingly, the position of the transparent conductive material is not required to be shielded by the black matrix 50.

Exemplarily, referring to fig. 2 to 5, the sub-pixel 30 includes a pixel electrode 31, and the second electrode 232 of the thin film transistor 23 is electrically connected to the pixel electrode 31. When the control electrode 233 controls the thin film transistor 23 to be turned on, the first electrode 231 is electrically connected to the second electrode 232, and the data line 22 is electrically connected to the pixel electrode 31, so that a display signal can be transmitted to the pixel electrode 31 to implement light emitting display. The first electrode 231 may be a source electrode of the thin film transistor 23 and the second electrode 232 may be a drain electrode of the thin film transistor 23, or the first electrode 231 may be a drain electrode of the thin film transistor 23 and the second electrode 232 may be a source electrode of the thin film transistor 23. The control electrode 233 may be a gate electrode of the thin film transistor 23. The thin film transistor 23 further includes a semiconductor layer 234, the first electrode 231 and the second electrode 232 are located on a side of the semiconductor layer 234 away from the substrate 11, and the first electrode 231 and the second electrode 232 are respectively formed at two ends of the semiconductor layer 234. The control electrode 233 is located between the first electrode 231 and the semiconductor layer 234.

Fig. 6 is a schematic top view of another lcd panel according to an embodiment of the present invention, fig. 7 is a schematic cross-sectional view along the direction BB' in fig. 6, and referring to fig. 6 and 7, in a direction perpendicular to the substrate 11, the black matrix block 53 covers the first electrode 231 and the second electrode 232 of the same tft 23. In the embodiment of the invention, in the light sensing element arrangement region 102, one black matrix block 53 covers the first electrode 231 and the second electrode 232 of the thin film transistor, so that the area of the single black matrix block 53 is not too small, and the manufacturing difficulty of the black matrix block 53 is reduced.

Fig. 8 is a schematic top view of another lcd panel according to an embodiment of the present invention, in fig. 8, the sub-pixels 30, the data lines 22, the tfts 23, the first black matrix strips 51 and the second black matrix strips 52 are omitted, and referring to fig. 8, in the light sensing element disposing region 102, the gate lines 21 include a metal material. The gate line 21 includes a curved line segment. In the embodiment of the invention, in the light sensing element arrangement area 102, the gate line 21 includes a metal material, and the gate line 21 includes a curved line segment, so that the first black matrix strip 51 covering the gate line 21 can be correspondingly arranged to have a curved edge, thereby preventing the stray light problem caused by diffraction of the gate line 21 and the first black matrix strip 51 when the external ambient light passes through the light sensing element arrangement area 102, and improving the accuracy of the light sensing element for acquiring images.

Fig. 9 is a schematic top view of another lcd panel according to an embodiment of the present invention, in which the sub-pixels 30, the gate lines 21, the tfts 23, the first black matrix strips 51 and the second black matrix strips 52 are omitted in fig. 9, and referring to fig. 3 and 9, in the light sensing element disposing region 102, the data lines 22 include a metal material, the black matrix 50 further includes a plurality of second black matrix strips 52, and the second black matrix strips 52 extend along a second direction and are arranged along a first direction. The second black matrix stripe 52 covers the data line 22 in a direction perpendicular to the substrate 11, and the data line 22 includes a curved line segment. In the light sensing element arrangement region 102 of the embodiment of the invention, the data line 22 includes a metal material, and the data line 22 includes a curved line segment, so that the second black matrix strip 52 covering the data line 22 can be correspondingly arranged to have a curved edge, thereby preventing the stray light problem caused by the diffraction of the data line 22 and the second black matrix strip 52 by the external environment light when the external environment light passes through the light sensing element arrangement region 102, and improving the accuracy of the light sensing element for acquiring the image.

Fig. 10 is a schematic top view of another lcd panel according to an embodiment of the present invention, and referring to fig. 2 and 10, in the light sensing element disposing region 102, the gate line 21 includes a metal material, and the data line 22 includes a transparent metal oxide. The lens metal oxide may comprise indium tin oxide, for example. In the light sensing element disposing region 102, the gate line 21 includes a metal material, and the first black matrix stripe 51 is disposed correspondingly to block the gate line 21. The data lines 22 include transparent metal oxide, so that the second black matrix stripes 52 are not required to be arranged to shield the data lines 22 in the photosensitive element arrangement region 102, thereby improving the transmittance of the photosensitive element arrangement region 102.

Exemplarily, referring to fig. 2 and fig. 5 to 10, the liquid crystal display panel further includes a plurality of color resistors 60, and the color resistors 60 are located on the side of the gate lines 21, the data lines 22 and the thin film transistors 23 away from the substrate 11. In a direction perpendicular to the substrate 11, the color resistors 60 cover the sub-pixels 30. The light emitted by the sub-pixel 30 passes through the color resistor 60 and then exits to the outside of the liquid crystal display panel, and the liquid crystal display panel can realize color display because the color resistor 60 absorbs a specific waveband to present a certain color.

Exemplarily, referring to fig. 5 and 7, the liquid crystal display panel further includes a counter substrate 12 and a liquid crystal layer 13, the liquid crystal layer 13 is located between the substrate 11 and the counter substrate 12, the color resistors 60 and the black matrix 50 are located between the liquid crystal layer 13 and the counter substrate 12, and the color resistors 60 and the black matrix 50 are formed on the counter substrate 12. In other embodiments, at least one of the color resistor 60 and the black matrix 50 may also be located between the liquid crystal layer 13 and the substrate 11, which is not limited in the embodiment of the present invention.

Alternatively, with continued reference to fig. 10, in the light-sensing element arrangement region 102, there are two color resistors 60 spaced apart by at least one sub-pixel region 301 along the first direction. In the second direction, there are two color resistors 60 spaced apart by at least one subpixel area 301. The sub-pixel 30 is located in the sub-pixel region 301. The sub-pixel region 301 is a region where the sub-pixel 30 is located. In the embodiment of the present invention, two color resistors 60 are spaced apart from at least one sub-pixel area 301 along the first direction and the second direction, that is, the color resistor 60 is not disposed in at least one sub-pixel area 301 along the first direction and the second direction, and the sub-pixel area 301 without the color resistor 60 has higher transmittance, so as to further improve the transmittance of the light sensing element disposing area 102. It is understood that in other embodiments, the sub-pixel area 301 may be spaced between two color resists 60 only along the first direction, or the sub-pixel area 301 may be spaced between two color resists 60 only along the second direction. It should be noted that the sub-pixel area 301 without the color resistor 60 includes the sub-pixel 30, and the light emitted by the sub-pixel 30 is directly emitted out of the liquid crystal display panel without being filtered by the color resistor 60, so as to present white light, enhance the luminance of the light sensing element setting area 102, reduce the difference between the luminance of the light sensing element setting area 102 and the luminance of the first display area 101, and improve the display effect. Further, the sub-pixel area 301 without the color resistor 60 includes the sub-pixels 30, and each sub-pixel 30 individually controls the luminance of the white light, thereby improving the display effect.

Alternatively, referring to fig. 10, in the light-sensing element disposing region 102, two adjacent color resists 60 are separated by one sub-pixel region 301 along the first direction, and two adjacent color resists 60 are separated by one sub-pixel region 301 along the second direction. The color resistors 60 include a first color resistor 61, a second color resistor 62 and a third color resistor 63, and the first color resistor 61, the second color resistor 62 and the third color resistor 63 are arranged in a delta shape. In other embodiments, the liquid crystal display panel may have other sub-pixel arrangements, which is not limited in the present invention.

Exemplarily, referring to fig. 10, the first color resist 61, the second color resist 62 and the third color resist 63 arranged in a delta shape together constitute one pixel to realize an arbitrary light emitting color by a color synthesis.

Fig. 11 is a schematic top view of another liquid crystal display panel according to an embodiment of the invention, and referring to fig. 2 and 11, two adjacent color resists 60 of the same color are separated by a pixel region 311 along the first direction in the light-sensing element disposing region 102. In the second direction, two adjacent color resists 60 of the same color are separated by one pixel region 311. The display area 100 includes a plurality of pixels 310, the pixels 310 include a plurality of sub-pixels 30, the pixels 310 are located in a pixel area 311, and the pixel area 311 is an area where the plurality of sub-pixels 30 form the pixels 310. The sub-pixel 30 is located in the sub-pixel region 301, and the pixel region 311 includes a plurality of sub-pixel regions 301. The plurality of color resistors 60 include a first color resistor 61, a second color resistor 62 and a third color resistor 63 arranged along a first direction, and the first color resistor 61, the second color resistor 62 and the third color resistor 63 are located in the same pixel region 311. In the embodiment of the present invention, the first color resistor 61, the second color resistor 62 and the third color resistor 63 are located in the same pixel region 311, and along the first direction, a pixel region 311 without the color resistor 60 is spaced between two adjacent pixel regions 311 with the color resistor 60, and along the second direction, a pixel region 311 without the color resistor 60 is spaced between two adjacent pixel regions 311 with the color resistor 60. The pixel region 311 without the color resist 60 has a higher transmittance, thereby further increasing the transmittance of the light-sensing element mounting region 102. It should be noted that the pixel region 311 without the color resistor 60 includes a plurality of sub-pixels 30, and light emitted by the sub-pixels 30 is directly emitted out of the liquid crystal display panel without being filtered by the color resistor 60, so as to present white light, enhance the luminance of the light sensing element setting region 102, reduce the difference between the luminance of the light sensing element setting region 102 and the luminance of the first display region 101, and improve the display effect. Further, the pixel region 311 without the color resistor 60 includes the sub-pixels 30, and each sub-pixel 30 individually controls the luminance of the white light, thereby improving the display effect.

Fig. 12 is a schematic top view of another liquid crystal display panel according to an embodiment of the invention, in which fig. 12 only illustrates the arrangement of the elements in the light sensing element arrangement region 102, and omits the first black matrix strips 51 in the light sensing element arrangement region 102, and referring to fig. 3 and 12, in the light sensing element arrangement region 102, the gate lines 21 include a metal material, the black matrix 50 further includes a plurality of first black matrix strips 51, and the plurality of first black matrix strips 51 extend along a first direction and are arranged along a second direction. The first black matrix stripe 51 covers the gate line 21 in a direction perpendicular to the substrate 11. The gate line 21 includes a curved line segment. The first color resistor 61 is a red color resistor, the second color resistor 62 is a green color resistor, and the third color resistor 63 is a blue color resistor. In the second direction, the length of the second color resistor 62 is smaller than the length of the third color resistor 63. In the embodiment of the present invention, the gate lines 21 include curved line segments, and the lengths of the color resistors 60 between two adjacent gate lines 21 are not equal along the second direction. Along the second direction, the length of the green color resistor is smaller than that of the blue color resistor, and under the same driving voltage or driving current, the luminous brightness of the green color resistor is smaller than that of the blue color resistor, so that the problem of yellow display caused by the box thickness of the liquid crystal display panel is favorably solved.

Illustratively, referring to fig. 12, in the second direction, the length of the second color resistor 62 is smaller than the length of the first color resistor 61, and the length of the second color resistor 62 is smaller than the length of the third color resistor 63. The length of the first color resistor 61 may be equal to the length of the second color resistor 62, or the length of the first color resistor 61 may not be equal to the length of the second color resistor 62.

Alternatively, referring to fig. 8, 9 and 12, the plurality of black matrix blocks 53 are arranged in a curved manner along the direction of the curved line segment. The arrangement direction of the black matrix blocks 53 is the same as the routing of the curve line segment, and the arrangement path of the black matrix blocks 53 is the same as the curve line segment. Specifically, in the light sensing element disposing region 102, when the gate line 21 includes a curved line segment, the black matrix blocks 53 are arranged in a row along the direction of the gate line 21, and the positions of the black matrix blocks 53 in the row fluctuate up and down along the curved direction of the gate line 21. When the data line 22 in the light sensing element disposing region 102 includes a curved line segment, the black matrix blocks 53 are arranged in a row along the trend of the data line 22, and the positions of the black matrix blocks 53 in the row fluctuate left and right along the curved trend of the data line 22. In the embodiment of the present invention, the plurality of black matrix blocks 53 are arranged in a curved manner along the direction of the curved line segment, so that the black matrix blocks 53 and the curved line segment are kept at a short distance, the distance between the black matrix strip (for example, the first black matrix strip 51 or the second black matrix strip 52) covering the curved line segment and the black matrix block 53 is reduced as much as possible, the sum of the areas of the black matrix blocks 53 and the black matrix strip covering the curved line segment is reduced, and the transmittance of the light sensing element installation region 102 is increased.

Fig. 13 is a schematic top view diagram of another lcd panel according to an embodiment of the present invention, and fig. 14 is a schematic top view diagram of a black matrix corresponding to the arrangement of the sub-pixels shown in fig. 13, referring to fig. 13 and 14, a display area 100 includes a plurality of pixels 310, and the pixels 310 include a plurality of sub-pixels 30. The number of pixels per unit foot in the light-sensing element placement area 102 is greater than or equal to 200 and less than 350. The gate line 21 and the data line 22 each include a transparent metal oxide. In the embodiment of the present invention, the PPI in the photosensitive element disposing region 102 is greater than or equal to 200 and less than 350. The light sensing element disposing area 102 has a lower pixel density, and the distance between two adjacent sub-pixels 30 is larger along the first direction, so the gate line 21 can be made of a transparent metal oxide material, and the distance between two adjacent sub-pixels 30 is also larger along the second direction, so the data line 22 can be made of a transparent metal oxide material, at this time, the light sensing element disposing area 102 does not need to be provided with the first black matrix strip 51 to shield the gate line 21, does not need to be provided with the second black matrix strip 52 to shield the data line 22, and only needs to be provided with the black matrix block 53 to shield the first pole 231 and the second pole 232 of the thin film transistor 23, thereby further improving the transmittance of the light sensing element disposing area 102.

Illustratively, referring to fig. 13 and 14, the number of pixels per unit foot in the first display area 101 is equal to the number of pixels per unit foot in the light-sensing element placement area 102. In each of the first display area 101 and the light-sensing element placement area 102, the number of pixels per unit foot is greater than or equal to 200 and less than 350. In other embodiments, the first display area 101 and the light-sensing element arrangement area 102 may also have different pixel densities, for example, the number of pixels per unit foot in the first display area 101 is greater than or equal to 350 and less than or equal to 432; the number of pixels per unit foot in the light-sensing element placement area 102 is greater than or equal to 200 and less than 350.

An embodiment of the present invention further provides a display device, and fig. 15 is a schematic structural diagram of the display device provided in the embodiment of the present invention. As shown in fig. 15, the display device according to the embodiment of the invention includes the liquid crystal display panel 210 according to any embodiment of the invention and the light sensing elements 220 located in the light sensing element disposing region 102. The light sensing element 220 is located on the backlight side of the liquid crystal display panel 210. That is, the light sensing element 220 is located on a side away from the light emitting display side of the liquid crystal display panel 210 (the arrow direction in fig. 15 indicates the light emitting direction of the liquid crystal display panel 210). The light sensing element 220 may be an optical device or an optoelectronic device, such as a camera, an infrared sensor, etc., and external ambient light reaches the light sensing element 220 after penetrating through the light sensing element installation region 102 of the display panel, thereby implementing functions such as image capture, etc. The display device provided by the embodiment of the invention can be a mobile phone, a computer, a television, an intelligent wearable device and the like, and the embodiment of the invention is not particularly limited in this respect.

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

1. The liquid crystal display panel is characterized by comprising a display area, wherein the display area comprises a first display area and a light sensing element arrangement area, and the first display area at least partially surrounds the light sensing element arrangement area;

a substrate;

2. The liquid crystal display panel of claim 1, wherein the black matrix blocks comprise curves at outer edges of the substrate vertical projection.

3. The liquid crystal display panel according to claim 1, wherein the plurality of black matrix blocks include a first black matrix block and a second black matrix block;

in a direction perpendicular to the substrate, the first black matrix block covers the first pole, and the second black matrix block covers the second pole.

4. The liquid crystal display panel according to claim 1, wherein the black matrix block covers the first pole and the second pole in the same thin film transistor in a direction perpendicular to the substrate.

5. The liquid crystal display panel of claim 1, wherein in the light-sensing element disposing region,

the gate line includes a metal material, and the black matrix further includes a plurality of first black matrix strips extending in the first direction and arranged in the second direction, the first black matrix strips covering the gate line in a direction perpendicular to the substrate.

6. The liquid crystal display panel of claim 5, wherein the gate lines comprise curvilinear line segments.

7. The liquid crystal display panel of claim 5, wherein the data line comprises a transparent metal oxide.

8. The liquid crystal display panel according to claim 1, wherein in the light sensing element disposing region, the data line comprises a metal material, the black matrix further comprises a plurality of second black matrix stripes extending in the second direction and arranged in the first direction, the second black matrix stripes covering the data line in a direction perpendicular to the substrate; the data line includes a curved line segment.

9. The liquid crystal display panel according to claim 6 or 8, wherein the plurality of black matrix blocks are arranged in a curved manner along a direction of the curved line segment.

10. The liquid crystal display panel according to claim 1, wherein the display region includes a plurality of pixels including a plurality of the sub-pixels;

the number of pixels per unit foot in the first display area is equal to the number of pixels per unit foot in the light-sensing element placement area.

11. The liquid crystal display panel according to claim 1, wherein the display region includes a plurality of pixels including a plurality of the sub-pixels;

in the light sensing element arrangement area, the number of pixels per unit foot is more than or equal to 200 and less than 350;

the gate line and the data line each include a transparent metal oxide.

12. The liquid crystal display panel according to claim 1, further comprising a plurality of color resistors on a side of the gate lines, the data lines, and the thin film transistors remote from the substrate;

in a direction perpendicular to the substrate, the color-resistor covers the sub-pixels;

along the first direction and/or the second direction, two color resistors are separated by at least one sub-pixel area in the light sensing element arrangement area; wherein the sub-pixel is located in the sub-pixel region.

13. The liquid crystal display panel of claim 12, wherein in the light-sensing element disposing region,

two adjacent color resistors are separated by one sub-pixel region along the first direction, and two adjacent color resistors are separated by one sub-pixel region along the second direction;

the color resistors comprise a first color resistor, a second color resistor and a third color resistor, and the first color resistor, the second color resistor and the third color resistor are arranged in a delta shape.

14. The liquid crystal display panel of claim 12, wherein in the light-sensing element disposing region,

along the first direction, two adjacent color resistors with the same color are separated by one pixel region, and along the second direction, two adjacent color resistors with the same color are separated by one pixel region; wherein the display area comprises a plurality of pixels, the pixels comprise a plurality of the sub-pixels, and the pixels are located in the pixel area;

the plurality of color resistors comprise a first color resistor, a second color resistor and a third color resistor which are arranged along the first direction, and the first color resistor, the second color resistor and the third color resistor are positioned in the same pixel region.

15. The liquid crystal display panel according to claim 14, wherein in the light sensing element disposing region, the gate line comprises a metal material, the black matrix further comprises a plurality of first black matrix stripes extending in the first direction and arranged in the second direction, the first black matrix stripes covering the gate line in a direction perpendicular to the substrate; the gate line comprises a curved line segment;

the first color resistor is a red color resistor, the second color resistor is a green color resistor, the third color resistor is a blue color resistor, and the length of the second color resistor is smaller than that of the third color resistor along the second direction.

16. The liquid crystal display panel according to claim 5 or 15, wherein the number of pixels per unit foot in the light-sensing element disposition region is greater than or equal to 350 and less than or equal to 432.

17. A display device comprising the liquid crystal display panel according to any one of claims 1 to 16.