Display device

Patent metadata

Field	Value
Publication number	US-10921649-B2
Application number	US-201916368832-A
Country	US
Kind code	B2
Filing date	Mar 28, 2019
Priority date	May 8, 2018
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A display device includes a first substrate, a second substrate, a first conductive layer, a first insulating layer, a second conductive layer and a spacer. The second substrate is disposed opposite to the first substrate. The first conductive layer is disposed on the first substrate and includes the first conductive line and the first dummy pad thereon. The first dummy pad and the first conductive line are disposed adjacent to each other. The first insulating layer is disposed on the first conductive layer. The second conductive layer is disposed on the first insulating layer and include a conductive pad partially overlap the first dummy pad. The spacer is disposed between the first substrate and the second substrate and partially overlaps the first conductive line.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate;
a second substrate, disposed opposite to the first substrate;
a first conductive layer, disposed between the first substrate and the second substrate, the first conductive layer comprising a first portion and a second portion, and the second portion being disposed adjacent to the first portion, wherein the first portion and the second portion have a first distance therebetween;
a first insulating layer, disposed between the first conductive layer and the second substrate;
a second conductive layer, disposed between the first insulating layer and the second substrate, the second conductive layer overlapping the second portion;
a spacer, disposed between the first insulating layer and the second substrate, wherein the spacer overlaps the first portion, the spacer has a spacer height, and the spacer has
a first width at 90% height of the spacer height; and
a second insulating layer disposed between the spacer and the first insulating layer;
wherein a ratio of the first distance to the first width is greater than or equal to 0.2 and less than or equal to 2;
wherein a thickness from a top surface of the second insulating layer corresponding to the first portion to the first substrate is defined as a first thickness, a thickness from the top surface of the second insulating layer corresponding to the second portion to the first substrate is defined as a second thickness, and the second thickness is greater than the first thickness.

2. The display device of claim 1 , wherein the first portion is used for receiving a scan signal.

3. The display device of claim 1 , wherein the second portion is floating or grounded.

4. The display device of claim 3 , wherein the second conductive layer comprises a conductive pad that overlaps the second portion.

5. The display device of claim 1 , wherein the second portion is used for receiving a common signal.

6. The display device of claim 5 , wherein the second conductive layer comprises a dummy pad that overlaps the second portion, and the dummy pad is floating or grounded.

7. The display device of claim 1 , wherein a trench is formed between the first portion and the second portion, a thickness from the top surface of the second insulating layer corresponding to the trench to the first substrate is defined as a fourth thickness, and the fourth thickness is less than the first thickness.

8. The display device of claim 1 , further comprising a first alignment layer disposed between the spacer and the second insulating layer.

9. The display device of claim 8 , further comprising a second alignment layer disposed between the spacer and the first alignment layer.

10. A display device, comprising:
a first substrate;
a second substrate, disposed opposite to the first substrate;
a first conductive layer, disposed between the first substrate and the second substrate, the first conductive layer comprising a first conductive line and a first dummy pad, wherein the first dummy pad is disposed adjacent to the first conductive line;
a first insulating layer, disposed between the first conductive layer and the second substrate;
a second conductive layer, disposed between the first insulating layer and the second substrate, the second conductive layer comprising a conductive pad, and the conductive pad overlapping the first dummy pad;
a spacer, disposed between the first insulating layer and the second substrate, wherein the spacer overlaps the first conductive line; and
a second insulating layer disposed between the spacer and the first insulating layer;
wherein a thickness from a top surface of the second insulating layer corresponding to the first conductive line to the first substrate is defined as a first thickness, a thickness from the top surface of the second insulating layer corresponding to the first dummy pad to the first substrate is defined as a second thickness, and the second thickness is greater than the first thickness.

11. The display device of claim 10 , wherein a distance between the first conductive line and the first dummy pad is defined as a first distance, the spacer has a spacer height, the spacer has a first width at 90% height of the spacer height, and a ratio of the first distance to the first width is greater than or equal to 0.2 and less than or equal to 2.

12. The display device of claim 10 , wherein a trench is formed between the first conductive line and the first dummy pad, a thickness from the top surface of the second insulating layer corresponding to the trench to the first substrate is defined as a fourth thickness, and the fourth thickness is less than the first thickness.

13. The display device of claim 10 , wherein the first conductive layer further comprises a second conductive line, and the second conductive line is disposed adjacent to the first conductive line.

14. The display device of claim 13 , wherein the second conductive layer further comprises a second dummy pad, and the second dummy pad overlaps the second conductive line.

15. The display device of claim 14 , further comprising a second insulating layer disposed between the spacer and the first insulating layer, wherein a thickness from a top surface of the second insulating layer corresponding to the first conductive line to the first substrate is defined as a first thickness, a thickness from the top surface of the second insulating layer corresponding to the second conductive line to the first substrate is defined as a third thickness, and the third thickness is greater than the first thickness.

16. The display device of claim 15 , wherein a trench is formed between the first conductive line and the second conductive line, a thickness from the top surface of the second insulating layer corresponding to the trench to the first substrate is defined as a fifth thickness, and the fifth thickness is less than the first thickness.

Assignees

• Innolux Corp

Inventors

• Nieh Chi-Hsuan
• Kao Yu-Chien
• Yang Po-Ju
• Huang Shih-I

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

• G02F1/13458

  Terminal pads · CPC title

• G02F1/133707 Primary

  Structures for producing distorted electric fields, e.g. bumps, protrusions, recesses, slits in pixel electrodes · CPC title

• G02F1/13394 Primary

  spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence) · CPC title