US 12,169,344 B2
Pixel unit and driving method therefor, array substrate, and vertical alignment liquid crystal display device
Hyunsic Choi, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN)
Appl. No. 17/798,170
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Sep. 16, 2021, PCT No. PCT/CN2021/118721
§ 371(c)(1), (2) Date Aug. 8, 2022,
PCT Pub. No. WO2022/089081, PCT Pub. Date May 5, 2022.
Claims priority of application No. 202011181732.7 (CN), filed on Oct. 29, 2020.
Prior Publication US 2023/0099046 A1, Mar. 30, 2023
Int. Cl. G02F 1/1368 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01)
CPC G02F 1/1368 (2013.01) [G02F 1/134363 (2013.01); G02F 1/136222 (2021.01); G02F 1/13624 (2013.01); G02F 1/136286 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A pixel unit, comprising:
a first insulating layer;
a first pixel electrode located on a first side of the first insulating layer and including a plurality of first electrode strips;
a common electrode located on the first side of the first insulating layer and including a plurality of second electrode strips; wherein the second electrode strips and the first electrode strips are sequentially and alternately arranged in a first direction; and slits each are disposed between a second electrode strip in the second electrode strips and a first electrode strip in the first electrode strips that are adjacent to each other; and
a second pixel electrode located on a second side of the first insulating layer; wherein the second side of the first insulating layer is opposite to the first side of the first insulating layer; and the second pixel electrode is overlapped with at least a region where the slits are located;
wherein each of the plurality of first electrode strips includes at least two first electrode segments connected in sequence; and two adjacent first electrode segments have a first included angle therebetween, and the first included angle is greater than 0 degree and less than 180 degrees; and each of the plurality of second electrode strips includes at least two second electrode segments connected in sequence; and two adjacent second electrode segments have a second included angle therebetween, and the second included angle is greater than 0 degree and less than 180 degrees;
wherein a plane perpendicular to the first insulating layer and perpendicular to the first direction is a reference plane; wherein an included angle between each of at least one first electrode segment and the reference plane is 45±7 degrees, and an included angle between each of at least one second electrode segment and the reference plane is 45±7 degrees;
the pixel unit further comprises:
a first thin film transistor located on the second side of the first insulating layer; wherein a control electrode of the first thin film transistor is configured to be coupled to a scan signal line, a first electrode of the first thin film transistor is configured to be coupled to a first data voltage line, and a second electrode of the first thin film transistor is coupled to the plurality of first electrode strips of the first pixel electrode; and
a second thin film transistor located on the second side of the first insulating layer; wherein a control electrode of the second thin film transistor is configured to be coupled to the scan signal line, a first electrode of the second thin film transistor is configured to be coupled to a second data voltage line, and a second electrode of the second thin film transistor is coupled to the second pixel electrode; wherein
the common electrode is configured to be coupled to a common voltage line; and
the second pixel electrode includes a planar electrode and a third conductive connection portion, and the planar electrode is located on a side of a gate insulating layer of the second thin film transistor away from the first insulating layer; the gate insulating layer includes a fourth via; and the third conductive connection portion is connected to the second electrode of the second thin film transistor, and is connected to the planar electrode through the fourth via.