IP Library › Granted Patent US 11,119,368
Granted Patent B2
US 11,119,368 · App. 16/781,756 · Granted Sep 14, 2021

Liquid crystal display panel

Inventor: Teruhisa Nakagawa (Hyogo, JP)
Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.; PASONA KNOWLEDGE PARTNER INC.
G02F1/134336G02F1/1368G02F1/134363G02F1/134345G02F1/134372G02F2201/123
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Quick Facts
Patent No.
US 11,119,368
App. No.
16/781,756
Granted
Sep 14, 2021
Kind
B2
Abstract

A liquid crystal display panel having a plurality of pixels arrayed in a matrix, the liquid crystal display panel comprising: a plurality of first signal lines; a transistor provided in each of the plurality of pixels; and a pixel electrode provided in each of the plurality of pixels, wherein, in each of the plurality of pixels, the pixel electrode includes a first pixel electrode and a second pixel electrode that are separated across the first signal line corresponding to the pixel and a bridge electrode that extends over the first signal line and connects the first pixel electrode and the second pixel electrode, the first pixel electrode has a plurality of first line electrodes extending in a first direction, and the second pixel electrode has a plurality of second line electrodes extending in a second direction different from the first direction.

Claims (33)

1. A liquid crystal display panel having a plurality of pixels arrayed in a matrix, the liquid crystal display panel comprising:

a plurality of first signal lines extending in a column direction;

a plurality of second signal lines extending in a row direction;

a first black matrix and a second black matrix extended in the row direction;

a transistor provided in each of the plurality of pixels; and

a pixel electrode provided in each of the plurality of pixels and connected to the first signal line corresponding to the pixel and the second signal line corresponding to the pixel via the transistor corresponding to the pixel,

wherein, in each of the plurality of pixels,

the pixel electrode includes a first pixel electrode and a second pixel electrode that are separated across the first signal line corresponding to the pixel and a bridge electrode that extends over the first signal line and connects the first pixel electrode and the second pixel electrode,

the first pixel electrode has a plurality of first line electrodes extending in a stripe pattern in a first direction,

the second pixel electrode has a plurality of second line electrodes extending in a stripe pattern in a second direction intersecting the first direction,

the first black matrix is adjacent to the second black matrix in the column direction,

the first black matrix and the second black matrix are overlapped by two adjacent second signal lines respectively, and

no black matrix is disposed at a boundary between the first pixel electrode of one pixel of two adjacent pixels of the plurality of pixels and the second pixel electrode of another pixel of the two adjacent pixels in an area between the first black matrix and the second black matrix.

2. The liquid crystal display panel according to claim 1 , wherein, in a planar view, in each of the plurality of pixels, a tip of at least one of the plurality of first line electrodes and a tip of at least one of the plurality of second line electrodes overlap the first signal line corresponding to the pixel.

3. The liquid crystal display panel according to claim 1 ,

wherein the first pixel electrode has a first bent portion formed by bending a part of a side of at least one of the plurality of first line electrodes in a direction inclined with respect to the first direction,

the second pixel electrode has a second bent portion formed by bending a part of a side of at least one of the plurality of second line electrodes in a direction inclined with respect to the second direction, and

in each of the plurality of pixels, at least one of the first bent portion and the second bent portion overlaps the first signal line corresponding to the pixel in a planar view.

4. The liquid crystal display panel according to claim 3 , wherein

the plurality of first line electrodes includes a first finger electrode portion having an open end that is one of both ends,

the plurality of second line electrodes include a second finger electrode portion having an open end that is one of both ends,

the first bent portion is formed at a tip of the first finger electrode portion, and

the second bent portion is formed at a tip of the second finger electrode portion.

5. The liquid crystal display panel according to claim 1 , wherein the second pixel electrode of the one pixel of two adjacent pixels of the plurality of pixels and the first pixel electrode of the another pixel of the two adjacent pixels are provided between two adjacent first signal lines of the plurality of first signal lines.

6. The liquid crystal display panel according to claim 5 , wherein a second end electrode located closest to the plurality of first line electrodes in the other pixel from among the plurality of second line electrodes in the one pixel is adjacent to a first end electrode located closest to the plurality of second line electrodes in the one pixel from among the plurality of first line electrodes in the other pixel.

7. The liquid crystal display panel according to claim 6 , wherein a distance between the first end electrode and the second end electrode is greater than a pitch of the plurality of first line electrodes and a pitch of the plurality of second line electrodes.

8. The liquid crystal display panel according to claim 6 , wherein a distance between the first end electrode and the second end electrode is equal to a pitch of the plurality of first line electrodes and a pitch of the plurality of second line electrodes.

9. The liquid crystal display panel according to claim 5 , wherein the second direction that is an extending direction of the plurality of second line electrodes in the one pixel is equal to the first direction that is an extending direction of the plurality of first line electrodes in the other pixel.

10. The liquid crystal display panel according to claim 1 , further comprising a plurality of second signal lines extending in a direction orthogonal to the plurality of first signal lines,

wherein the transistor of one of two adjacent pixels of the plurality of pixels and the transistor of the other pixel of the two adjacent pixels are provided to overlap different second signal lines of the plurality of second signal lines.

11. The liquid crystal display panel according to claim 1 , wherein each of the plurality of first signal lines is a video signal line connected to a source electrode and/or a drain electrode of the transistor.

12. The liquid crystal display panel according to claim 1 , wherein each of the plurality of first signal lines is a scanning line connected to a gate electrode of the transistor.

13. The liquid crystal display panel according to claim 11 , wherein the bridge electrode over the video signal line overlaps with a scanning line in planar view.

Assignments (3)
NUNC PRO TUNC ASSIGNMENT Recorded Jul 12, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 064258/0892 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 5, 2020
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PASONA KNOWLEDGE PARTNER INC.
Reel/Frame 052849/0777 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 10, 2020
From: NAKAGAWA, TERUHISA
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 052361/0644 →
Priority Claims (1)
JP JP2019-034631 · Feb 27, 2019 · national
Continuity (1)
Related Publication 20200271999A1 · Aug 27, 2020