Array substrate and display panel

Patent metadata

Field	Value
Publication number	US-2022365396-A1
Application number	US-202117771243-A
Country	US
Kind code	A1
Filing date	Jun 17, 2021
Priority date	Jun 18, 2020
Publication date	Nov 17, 2022
Grant date	—

Abstract

An array base plate and a display panel. The array base plate includes a substrate and a plurality of sub-pixels that are provided on the substrate and are arranged in an array; each of the sub-pixels includes a first slit electrode ( 1 ) and a second slit electrode ( 2 ) that are arranged in a first direction the first slit electrode ( 1 ) includes a plurality of first slits ( 11 ) that are arranged parallelly and separately, and the second slit electrode ( 2 ) includes a plurality of second slits ( 21 ) that are arranged parallelly and separately, and a direction of extension of the first slits ( 11 ) and a direction of extension of the second slits ( 21 ) are different; and the sub-pixel further includes a dark-region light shielding part ( 6 ) located over the first slit electrode ( 1 ) and the second slit electrode ( 2 ).

First claim

1 . An array base plate, wherein the array base plate comprises a substrate and a plurality of sub-pixels that are provided on the substrate and are arranged in an array;
each of the sub-pixels comprises a first slit electrode and a second slit electrode that are arranged in a first direction: the first slit electrode comprises a plurality of first slits that are arranged parallelly and separately, the second slit electrode comprises a plurality of second slits that are arranged parallelly and separately, and a direction of extension of the first slits and a direction of extension of the second slits are different; and the sub-pixel further comprises a dark-area light shielding part located over the first slit electrode and the second slit electrode, and an orthographic projection of the dark-area light shielding part on the substrate at least partially covers an orthographic projection of a first area of the sub-pixel on the substrate, wherein the first area is an area between the first slit electrode and the second slit electrode.

2 . The array base plate according to claim 1 , wherein a width of the dark-area light shielding part in the first direction is uniform.

3 . The array base plate according to claim 2 , wherein the width of the dark-area light shielding part in the first direction is less than or equal to a maximum width of the first area in the first direction.

4 . The array base plate according to claim 3 , wherein in the sub-pixel, an included angle between the direction of extension of the first slits and a second direction is a first included angle, and air included angle between the direction of extension of the second slits and the second direction is a second included angle, wherein the second direction and the first direction are perpendicular; and
the maximum width of the first area in the first direction is in a positive correlation with the first included angle and the second included angle, respectively.

5 . The array base plate according to claim 1 , wherein a width of the dark-area light shielding part in the first direction is correlated with a width of the first slits, a distance between each of the adjacent first slits, a width of the second slits and a distance between each of the adjacent second slits.

6 . The array base plate according to claim 1 , wherein the orthographic projection of the dark-area light shielding part on the substrate further covers an orthographic projection of a second area of the sub-pixel on the substrate, the second area comprises areas where two ends of each of the first slits are located and areas where two ends of each of the second slits are located.

7 . The array base plate according to claim 6 , wherein the second area further comprises areas between the same ends of each of the first slits and of each of the second slits and an edge of the adjacent sub pixel.

8 . The array base plate according to claim 1 , wherein the sub-pixel further comprises a planar electrode located under the first slit electrode and the second slit electrode.

9 . The array base plate according to claim 8 , wherein when the planar electrode is electrically connected to a common-electrode signal line, and the first slit electrode and the second slit electrode are electrically connected to a pixel-electrode signal line, the planar electrode is a common electrode, the first slit electrode and the second slit electrode are pixel electrodes, and the formed array base plate is an ADS-type array base plate.

10 . The array base plate according to claim 8 , wherein when the planar electrode is electrically connected to a pixel-electrode signal line, and the first slit electrode and the second slit electrode are electrically connected to a common-electrode signal line, the planar electrode is a pixel electrode, the first slit electrode and the second slit electrode are common electrodes, and the formed array base plate is an HADS-type array base plate.

11 . A display panel, wherein the display panel comprises a color-film base plate and an array base plate which are arranged in align with each other, and a liquid-crystal layer located between the color-film base plate and the array base plate, wherein the array base plate comprises a substrate and a plurality of sub-pixels that are provided on the substrate and are arranged in an array;
each of the sub-pixels comprises a first slit electrode and a second slit electrode that are arranged in a first direction; the first slit electrode comprises a plurality of first slits that are arranged parallelly and separately, the second slit electrode comprises a plurality of second slits that are arranged parallelly and separately, and a direction of extension of the first slits and a direction of extension of the second slits are different; and the sub-pixel further comprises a dark-area light shielding part located over the first slit electrode and the second slit electrode, and an orthographic projection of the dark-area light shielding part on the substrate at least partially covers an orthographic projection of a first area of the sub-pixel on the substrate, wherein the first area is an area between the first slit electrode and the second slit electrode.

12 . A display panel, wherein the display panel comprises an array base plate and a color-film base plate which are arranged in align with each other;
the array base plate comprises a substrate and a plurality of sub-pixels that are provided on the substrate and are arranged in an array, each of the sub-pixels comprises a first slit electrode and a second slit electrode that are arranged in a first direction, the first slit electrode comprises a plurality of first slits that are arranged parallelly and separately, the second slit electrode comprises a plurality of second slits that are arranged parallelly and separately, and a direction of extension of the first slits and a direction of extension of the second slits are different; and the color-film base plate comprises a black matrix, the black matrix comprises a plurality of dark-area light shielding parts, and an orthographic projection of the dark-area light shielding part on the substrate at least partially covers an orthographic projection of a first area of the sub-pixel on the substrate, wherein the first area is an area between the first slit group and the second slit group.

13 . The display panel according to claim 12 , wherein a width of the dark-area light shielding part in the first direction is less than or equal to a sum of an aligning deviation between the array base plate and the color-film base plate and a maximum width of the first area in the first direction.

14 . The display panel according to claim 13 , wherein in the sub-pixel, an included angle between the direction of extension of the first slits and a second direction is a first included angle, and an included angle between the direction of extension of the second slits and the second direction is a second included angle, wherein the second direction and the first direction are perpendicular; and
the maximum width of the first area in the first direction is in a positive correlation with the first included angle and the second included angle, respectively.

15 . The display panel according to claim 12 , wherein the array base plate further comprises a plurality of grid lines that are arranged in the first direction, and the grid lines are located between two adjacent rows of the sub-pixels in the first direction;
the black matrix further comprises a grid-line light shielding part, and orthographic projections of the grid-line light shielding part on the substrate co

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd

Inventors

• Qian Xueqiang
• Chen Dongchuan
• Ma Xinli
• Liu Bingyang
• Xu Tianyu

Classifications

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/133512 Primary

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/136209

  Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title