Liquid crystal display apparatus

Patent metadata

Field	Value
Publication number	US-11994759-B2
Application number	US-202218056384-A
Country	US
Kind code	B2
Filing date	Nov 17, 2022
Priority date	Jul 14, 2020
Publication date	May 28, 2024
Grant date	May 28, 2024

Abstract

A liquid crystal display apparatus is provided. The liquid crystal display apparatus comprises a backplane having a second step portion and a first step portion used for supporting a liquid crystal panel, that is, the assembly of optical parts such as a light homogenizing element and an optical film to the liquid crystal panel is implemented in the present application via the backplane without a middle frame.

First claim

What is claimed is:

1. A television, comprising:
a liquid crystal panel, including a display region and a circuit board, and configured to display an image driven by the circuit board;
a backlight source, configured to provide back light for the liquid crystal panel;
a light homogenizing element, configured to homogenize light rays from the backlight source, wherein the liquid crystal panel is located on a light emitting side of the light homogenizing element; and
a backplane, comprising a first side, a second side opposite to the first side, a third side and a fourth side opposite to the third side,
wherein the fourth side has a second structure different from a first structure which the first side, the second side and the third side all have, and
the first side comprises a first step portion and a second step portion, wherein the second step portion is configured to support the liquid crystal panel, and the first step portion is configured to support the light homogenizing element;
wherein the television further comprises:
an inner frame, disposed on a surface of a side of the second step portion facing the first step portion; and
a sealing member disposed on a surface of a side of the inner frame facing the first step portion.

2. The television according to claim 1 , further comprises:
an optical film, configured to brighten the light rays from the backlight source; and
a film bonding element disposed between the light homogenizing element and the optical film;
wherein the film bonding element is located on an edge of the light homogenizing element at a same side with the optical film.

3. The television according to claim 1 , wherein the inner frame comprises a first surface and a second surface opposite to the first surface, the first surface is fixed on the surface of the side of the second step portion facing the first step portion, and at least one first positioning part is provided on the first surface of the inner frame.

4. The television according to claim 1 , wherein the inner frame comprises a first surface and a second surface opposite to the first surface, the first surface is fixed on the surface of the side of the second step portion facing the first step portion, and at least one second positioning part is provided on the second surface of the inner frame.

5. The television according to claim 3 , wherein one of the at least one first positioning part is a recess.

6. The television according to claim 1 , wherein the inner frame is an integrally extrusion-molded soft frame.

7. The television according to claim 1 , wherein the inner frame comprises a first part made of a first material and a second part made of a second material different from the first material; wherein the second material is softer than the first material, and the first part is fixed to the surface of the side of the second step portion facing the first step portion.

8. The television according to claim 7 , wherein the first material comprises Polypropylene (PP), and the second material comprises Thermoplastic Vulcanizate (TPV) or Thermoplastic Elastomer (TPE).

9. The television according to claim 1 , wherein the sealing member comprises a foam tape, the foam tape is of a three-layer structure which comprises a first layer, a second layer and a third layer between the first layer and the second layer, the first layer is made of a base material and the second layer is made of an abrasion-resistant material and the third layer is made of foam.

10. The television according to claim 1 , wherein the first side further comprises a side wall for connecting the first step portion and the second step portion, an accommodating space is formed by the first step portion, the side wall and the second step portion, and edges of the light homogenizing element and an optical film are placed in the accommodating space.

11. The television according to claim 10 , wherein the first step portion, the second step portion and the side wall for connecting the first step portion and the second step portion are configured to form a C shape.

12. The television according to claim 10 , wherein the first step portion, the side wall and the second portion are of an integrated structure.

13. The television according to claim 1 , wherein the inner frame is configured to attach to the first side, the second side and the third side of the backplane.

14. The television according to claim 1 , wherein the liquid crystal panel comprises an in-plane switching panel.

Assignees

• Hisense Visual Tech Co Ltd

Inventors

• Chen Chao
• Li Jinlong
• Tang Zhiqiang
• Hu Xiaolong
• Cui Delin
• Zhang Yanquan
• Yao Wenping
• Wang Jiong
• Wang Fuyuan

Classifications

• G02F1/133314 Primary

  Back frames · CPC title

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G09F9/00

  Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) · CPC title

• B23P15/00

  Making specific metal objects by operations not covered by a single other subclass or a group in this subclass · CPC title