# US 12,222,607 B2 · Liquid crystal display panel and display apparatus

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- Number: US 12,222,607 B2
- Document ID: US12222607B2
- Status: Granted
- Kind: B2
- Application number: 18/024,004
- Filed: 2022-05-27
- Published: 2024-08-22
- Granted: 2025-02-11
- Earliest claimed: 2022-05-27
- Assignees: Boe Technology Group Co., Ltd.
- Applicants: Boe Technology Group Co., Ltd.
- Inventors: Yong Yu; Shi Shu; Chuanxiang Xu; Yang Yue; Xiang Li; Shaohui Li; Ce Ning; Jinchao Zhang; Qi Yao; Lizhong Wang
- Web page: https://patentgrep.com/patent/US12222607B2

## CPC

- G02F 1/13394: {spacers regularly patterned on the cell subtrate, e.g. walls, pillars (G02F1/133377 takes precedence)}
- G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)}
- G02F 1/1339: Gaskets; Spacers; Sealing of cells
- G02F 1/13396: {Spacers having different sizes}
- G02F 1/13398: {Spacer materials; Spacer properties}
- G02F 1/134318: {having a patterned common electrode}
- G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making}
- G02F 1/133357: {Planarisation layers}
- G02F 1/136227: {Through-hole connection of the pixel electrode to the active element through an insulation layer}
- G02F 2201/123: pixel
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 1)

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.

### Claim 5 (depends on 1)

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.

### Claim 6 (depends on 1)

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.

### Claim 7 (depends on 1)

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.

### Claim 8 (depends on 1)

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.

### Claim 9 (depends on 8)

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.

### Claim 10 (depends on 1)

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.

### Claim 11 (depends on 10)

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

### Claim 12 (depends on 1)

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.

### Claim 13 (depends on 12)

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

### Claim 14 (depends on 1)

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

### Claim 15 (depends on 1)

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

### Claim 16 (depends on 15)

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

### Claim 17 (depends on 16)

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.