Array substrate and display device

Patent metadata

Field	Value
Publication number	US-12013618-B2
Application number	US-202217954646-A
Country	US
Kind code	B2
Filing date	Sep 28, 2022
Priority date	Jun 4, 2018
Publication date	Jun 18, 2024
Grant date	Jun 18, 2024

Abstract

An array substrate (10) and a display device (16) are provided, and the array substrate includes a base substrate (1) and includes a pixel array (1) and an auxiliary conductive structure (3) which are on the base substrate (1); the pixel array includes a plurality of pixel units (2) arranged in an array and a plurality of pixel electrodes (21), and each of the plurality of pixel units (2) includes at least one of the plurality of pixel electrodes (21); the auxiliary conductive structure (3) surrounds at least one of the plurality of pixel electrodes (21) and is insulated from the plurality of pixel electrodes (21); a resistivity of a material of the auxiliary conductive structure (3) is less than or equal to a resistivity of a material of the at least one of the plurality of the pixel electrodes (21). The auxiliary conductive structure (3) receives and transmits interfering charges around the pixel electrode (21), so that the interfering charges are kept away from the pixel electrode (21), and thereby interference of the interfering charges on the pixel electrode (21) is prevented or reduced.

First claim

What is claimed is:

1. An array substrate, comprising:
a base substrate, a pixel array and an auxiliary conductive structure which are on the base substrate, wherein
the pixel array comprises a plurality of pixel units distributed in an array and a plurality of pixel electrodes, and each of the plurality of pixel units comprises at least one of the plurality of pixel electrodes;
the auxiliary conductive structure surrounds at least one of the plurality of pixel electrodes and is insulated from the plurality of pixel electrodes;
the array substrate further comprises: a plurality of gate lines and a plurality of data lines, provided on the base substrate and crossing each other to define the plurality of pixel units;
the auxiliary conductive structure comprises a plurality of strip portions;
the plurality of strip portions of the auxiliary conductive structure comprise: first strip portions extending along an extension direction of the plurality of gate lines; and second strip portions extending along an extension direction of the plurality of data lines; and
a width of each first strip portion in a direction perpendicular to an extension direction of the first strip portions is greater than a width of each second strip portion in a direction perpendicular to an extension direction of the second strip portions.

2. The array substrate according to claim 1 , wherein
distances from one of the first strip portions to two of the plurality of pixel electrodes adjacent to the one of the first strip portions are not equal; or
distances from one of the second strip portions to two of the plurality of pixel electrodes adjacent to the one of the second strip portions are not equal; or
distances from two adjacent ones of the first strip portions to a same one of the plurality of pixel electrodes between the two adjacent ones of the first strip portions are not equal; or
distances from two adjacent ones of the second strip portions to a same one of the plurality of pixel electrodes between the two adjacent ones of the second strip portions are not equal.

3. The array substrate according to claim 1 , wherein a material of the auxiliary conductive structure has a resistivity less than or equal to a resistivity of a material of the at least one, surrounded by the auxiliary conductive structure, of the plurality of pixel electrodes.

4. The array substrate according to claim 1 , wherein the auxiliary conductive structure and the plurality of pixel electrodes are in a same layer.

5. The array substrate according to claim 1 , wherein a planar shape, viewed in a direction perpendicular to the base substrate, of the auxiliary conductive structure comprises a closed loop surrounding the at least one of the plurality of pixel electrodes.

6. The array substrate according to claim 5 , wherein
the plurality of pixel units comprise a first pixel unit and a second pixel unit which are adjacent to each other;
each of the first pixel unit and the second pixel unit comprises a first pixel electrode and a second pixel electrode of the plurality of pixel electrodes;
the planar shape of the auxiliary conductive structure comprises the closed loop surrounding the second pixel electrode in the first pixel unit and the first pixel electrode in the second pixel unit.

7. The array substrate according to claim 1 , wherein the plurality of strip portions of the auxiliary conductive structure overlap at least a part of the plurality of gate lines and/or overlap at least a part of the plurality of data lines in a direction perpendicular to the base substrate.

8. The array substrate according to claim 1 , wherein
each of the plurality of pixel units further comprises a thin film transistor connected with the at least one of the plurality of pixel electrodes;
the auxiliary conductive structure covers at least a part of the thin film transistor.

9. The array substrate according to claim 1 , further comprising:
a shield component between adjacent ones of the plurality of pixel units; and
a color filter film array comprising a plurality of color filter films, wherein each of the plurality of pixel units comprises one of the plurality of color filter films;
wherein the plurality of strip portions of the auxiliary conductive structure overlap the shield component in a direction perpendicular to the base substrate;
the shield component is a black matrix or is a stack of two adjacent color filter films among the plurality of color filter films.

10. The array substrate according to claim 1 , further comprising a protrusion protruding in a direction away from the base substrate, wherein the protrusion is on the auxiliary conductive structure.

11. The array substrate according to claim 1 , further comprising a leading wire on the base substrate and further comprising data driver elements or gate driver elements which are on the base substrate, wherein the auxiliary conductive structure is grounded or is applied with a fixed voltage through the leading wire, and the leading wire is between adjacent ones of the data driver elements or adjacent ones of the gate driver elements.

12. A display device, comprising:
the array substrate according to claim 1 ;
an opposite substrate, opposing to the array substrate;
a liquid crystal layer, provided between the array substrate and the opposite substrate; and
a common electrode, provided on the array substrate and/or the opposite substrate, in which the common electrode and the plurality of pixel electrodes form an electric field to control deflection of liquid crystal molecules in the liquid crystal layer, wherein
an electrical signal applied to the auxiliary conductive structure is same as an electrical signal applied to the common electrode.

13. An array substrate, comprising:
a base substrate, a pixel array and an auxiliary conductive structure which are on the base substrate, wherein
the pixel array comprises a plurality of pixel units distributed in an array and a plurality of pixel electrodes, and each of the plurality of pixel units comprises at least one of the plurality of pixel electrodes;
the auxiliary conductive structure surrounds at least one of the plurality of pixel electrodes and is insulated from the plurality of pixel electrodes;
the array substrate further comprises: a plurality of gate lines and a plurality of data lines, provided on the base substrate and crossing each other to define the plurality of pixel units;
the auxiliary conductive structure comprises a plurality of strip portions;
the plurality of strip portions of the auxiliary conductive structure comprise: first strip portions extending along a first direction; and second strip portions extending along a second direction; and
a width of each first strip portion in a direction perpendicular to an extension direction of the first strip portions is greater than a width of each second strip portion in a direction perpendicular to an extension direction of the second strip portions.

14. The array substrate according to claim 13 , wherein
distances from one of the first strip portions to two of the plurality of pixel electrodes adjacent to the one of the first strip portions are not equal; or
distances from one of the second strip portions to two of the plurality of pixel electrodes adjacent to the one of the second strip portions are not equal; or
distances from two adjacent ones of the first strip portions to a same one of the plurality of pixel electrodes between the two adjacent ones of the first strip portions are not equal; or
distances from two adjacent ones of the second strip portions to a same one of the plurality of pixel

Assignees

• Boe Technology Group Co Ltd

Inventors

• Xian Jianbo
• Cheng Hongfei
• Xu Jian
• Qiao Yong

Classifications

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• G02F1/155

  Electrodes · CPC title

• G02F1/0316

  Electrodes · CPC title

• G02F1/136218

  Shield electrodes · CPC title