Liquid crystal display panel and display apparatus

Patent metadata

Field	Value
Publication number	US-12222607-B2
Application number	US-202218024004-A
Country	US
Kind code	B2
Filing date	May 27, 2022
Priority date	May 27, 2022
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

The disclosure provides a liquid crystal display panel and a display apparatus. The liquid crystal display panel of the disclosure includes: first and second substrates assembled to form a cell, a plurality of main spacers therebetween, and an auxiliary spacer around at least a portion of the main spacers. Height of the auxiliary spacer is greater than or equal to that of the main spacer. The display panel further includes: pillows on side of the first substrate close to the second substrate and each abutting against a corresponding main spacer. An orthographic projection of the main spacer on the first substrate falls within an orthographic projection of the pillow on the first substrate, and an orthographic projection of the auxiliary spacer on the first substrate does not overlap with the orthographic projection of the pillow on the first substrate.

First claim

What is claimed is:

1. A liquid crystal display panel, comprising: a first substrate and a second substrate assembled to form a cell, a plurality of main spacers between the first substrate and the second substrate, and an auxiliary spacer around at least a portion of the plurality of main spacers,
wherein a height of the auxiliary spacer is greater than or equal to a height of each of the plurality of main spacers,
the liquid crystal display panel further comprises: pillows on a side of the first substrate close to the second substrate and each abutting against a corresponding one of the plurality of main spacers, and
an orthographic projection of the main spacer on the first substrate falls within an orthographic projection of a corresponding pillow on the first substrate, and an orthographic projection of the auxiliary spacer on the first substrate does not overlap with the orthographic projection of the pillow on the first substrate,
wherein the first substrate comprises a first base, and the liquid crystal display panel further comprises a light-shielding layer on the first base; and
orthographic projections of both the main spacer and the auxiliary spacer on the first base fall within an orthographic projection of the light-shielding layer on the first base,
wherein the first substrate further comprises a driving circuit layer, a planarization layer and a pixel electrode sequentially disposed on a side of the light-shielding layer away from the first base;
the pixel electrode is electrically coupled to the driving circuit layer through a via hole penetrating through the planarization layer; and
the planarization layer is provided with a recess formed in the via hole, and the pillow is embedded in the recess.

2. The liquid crystal display panel of claim 1 , wherein a distance between an edge of the auxiliary spacer and an edge of the pillow is smaller than or equal to a distance between an edge of the main spacer and the edge of the pillow.

3. The liquid crystal display panel of claim 1 , wherein the liquid crystal display panel comprises a plurality of auxiliary spacers, and every two of the plurality of auxiliary spacers are on opposite sides of the main spacer and on a same straight line as a center of the main spacer.

4. The liquid crystal display panel of claim 1 , wherein an area of the orthographic projection of the auxiliary spacer on the first substrate is smaller than an area of the orthographic projection of the main spacer on the first substrate.

5. The liquid crystal display panel of claim 1 , wherein an arrangement density of the auxiliary spacer is smaller than or equal to an arrangement density of the plurality of main spacers.

6. The liquid crystal display panel of claim 1 , wherein the driving circuit layer comprises a plurality of thin film transistors;
the thin film transistor comprises a semiconductor layer; and
an orthographic projection of the semiconductor layer on the first base falls within the orthographic projection of the light-shielding layer on the first base.

7. The liquid crystal display panel of claim 1 , wherein the first substrate further comprises: a passivation layer and a common electrode sequentially disposed on a side of the pixel electrode away from the first base;
the common electrode has a plurality of slits; and
an orthographic projection of the common electrode on the first base at least partially overlaps with an orthographic projection of the pixel electrode on the first base.

8. The liquid crystal display panel of claim 1 , wherein the second substrate comprises: a second base and a black matrix on a side of the second base close to the first substrate; and
orthographic projections of both the main spacer and the auxiliary spacer on the second base fall within an orthographic projection of the black matrix on the second base.

9. The liquid crystal display panel of claim 8 , wherein a distance between an edge of the black matrix and an edge of the auxiliary spacer is greater than or equal to 0.9 μm.

10. The liquid crystal display panel of claim 1 , wherein a cross-section of the main spacer along a direction perpendicular to the second substrate has a rectangular or trapezoidal shape.

11. The liquid crystal display panel of claim 10 , wherein the main spacer has a slope angle in a range from 60 to 90 degrees.

12. The liquid crystal display panel of claim 1 , wherein a cross-section of the pillow in a direction perpendicular to the first substrate has a rectangle or a trapezoid shape.

13. The liquid crystal display panel of claim 12 , wherein the pillow has a slope angle in a range from 90 to 100 degrees.

14. The liquid crystal display panel of claim 1 , wherein the main spacer has an elastic recovery rate of 45% or more.

15. A display apparatus, comprising the liquid crystal display panel of claim 1 .

16. The display apparatus of claim 15 , wherein the display apparatus is an augmented reality display apparatus or a virtual reality display apparatus.

17. The display apparatus of claim 16 , wherein a pixel resolution of the augmented reality display apparatus or the virtual reality display apparatus is greater than or equal to 2000 PPI.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Yu Yong
• Shu Shi
• Xu Chuanxiang
• Yue Yang
• Li Xiang
• Li Shaohui
• Ning ce
• Zhang Jinchao
• Yao Qi
• Wang Lizhong

Classifications

• G02F1/136227

  Through-hole connection of the pixel electrode to the active element through an insulation layer · CPC title

• G02F1/133357

  Planarisation layers · CPC title

• G02F2201/123

  pixel · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/133512

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