Liquid crystal display device with mold frame having accommodation holes for housing height-constraint electronic components

Patent metadata

Field	Value
Publication number	US-10209545-B2
Application number	US-201615106314-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	May 5, 2016
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

The present invention provides a liquid crystal display device, which includes a liquid crystal display panel (2) and a backlight module (1) arranged on an undersurface of the liquid crystal display panel (2). A first flexible circuit board (20) and a second flexible circuit board (15) are electrically connected together and height-constraint components (22) of a liquid crystal display panel drive circuit and a backlight source drive circuit are collectively arranged on the second flexible circuit board (15). A mold frame (11) of the backlight module (2) is provided with accommodation holes (111) formed therein to receive and accommodates the height-constraint components (22) so as to effectively reduce the thickness of the liquid crystal display device and improve product competition power.

First claim

What is claimed is:

1. A liquid crystal display device, comprising: a liquid crystal display panel and a backlight module arranged on an undersurface of the liquid crystal display panel;
the liquid crystal display panel comprising a liquid crystal display panel body and a first flexible circuit board that is arranged at one side of the liquid crystal display panel body and is electrically connected with the liquid crystal display panel body;
the backlight module comprising a mold frame, a backlight source arranged in the mold frame, and a second flexible circuit board that is arranged on a top surface of the backlight source and a surface of the mold frame and is electrically connected to both the backlight source and the first flexible circuit board;
the second flexible circuit board comprising a backlight source drive circuit formed thereon;
the first flexible circuit board and the second flexible circuit board collectively comprising a liquid crystal display panel drive circuit formed thereon, the liquid crystal display panel drive circuit comprising a plurality of height-constraint components;
the plurality of height-constraint components being arranged on an inside surface of the second flexible circuit board that is adjacent to and faces toward the mold frame, the mold frame comprising accommodation holes formed therein at locations corresponding to the height-constraint components arranged on the second flexible circuit board in order to receive and accommodate the height-constraint components therein;
wherein the first flexible circuit board extends along a top surface of the backlight module and a lateral side surface of the backlight module to be backward folded to position on an undersurface of the backlight module and the second flexible circuit board is arranged on a top surface and a lateral side surface of the mold frame of the backlight module and is located between the first flexible circuit board and the backlight module;
wherein the second flexible circuit board has an outside surface facing away from the mold frame and the first flexible circuit board has an internal surface that faces toward and is adjacent to the outside surface of the second flexible circuit board and an external surface that is opposite to the internal surface and faces away from the second flexible circuit board, a plurality of non-height-constraint components having height lower than the height-constraint components and being arranged on the external surface of the first flexible circuit board so as to be opposite to and projecting from the first flexible circuit board in a direction away from the second flexible circuit board.

2. The liquid crystal display device as claimed in claim 1 , wherein the first flexible circuit board and the second flexible circuit board are two separate flexible circuit boards and the first flexible circuit board and the second flexible circuit board are electrically connected to each other through a connector.

3. The liquid crystal display device as claimed in claim 1 , wherein the first flexible circuit board and the second flexible circuit board are two separate portions of a unitary flexible circuit board.

4. The liquid crystal display device as claimed in claim 1 , wherein the backlight module further comprises a reflector plate arranged on an undersurface of the mold frame, a light guide plate arranged on a top surface of the reflector plate, and am optical film assembly arranged on a top surface of the light guide plate;
the backlight source being arranged between the light guide plate and the mold frame.

5. The liquid crystal display device as claimed in claim 4 , wherein the optical film assembly comprises, in sequence from bottom to top, a diffuser plate, a lower prism plate, and an upper prism plate stacked on one another.

6. The liquid crystal display device as claimed in claim 1 , wherein the accommodation holes are formed in one or multiple locations on a top surface, a lateral side surface, and a bottom surface of the mold frame.

7. The liquid crystal display device as claimed in claim 1 , wherein the height-constraint components comprise capacitors and resistors.

8. The liquid crystal display device, comprising: a liquid crystal display panel and a backlight module arranged on an undersurface of the liquid crystal display panel;
the liquid crystal display panel comprising a liquid crystal display panel body and a first flexible circuit board that is arranged at one side of the liquid crystal display panel body and is electrically connected with the liquid crystal display panel body;
the backlight module comprising a mold frame, a backlight source arranged in the mold frame, and a second flexible circuit board that is arranged on a top surface of the backlight source and a surface of the mold frame and is electrically connected to both the backlight source and the first flexible circuit board;
the second flexible circuit board comprising a backlight source drive circuit formed thereon;
the first flexible circuit board and the second flexible circuit board collectively comprising a liquid crystal display panel drive circuit formed thereon, the liquid crystal display panel drive circuit comprising a plurality of height-constraint components;
the plurality of height-constraint components being arranged on an inside surface of the second flexible circuit board that is adjacent to and faces toward the mold frame, the mold frame comprising accommodation holes formed therein at locations corresponding to the height-constraint components arranged on the second flexible circuit board in order to receive and accommodate the height-constraint components therein;
wherein the backlight module further comprises a reflector plate arranged on an undersurface of the mold frame, a light guide plate arranged on a top surface of the reflector plate, and am optical film assembly arranged on a top surface of the light guide plate;
the backlight source being arranged between the light guide plate and the mold frame;
wherein the optical film assembly comprises, in sequence from bottom to top, a diffuser plate, a lower prism plate, and an upper prism plate stacked on one another;
wherein the first flexible circuit board extends along a top surface of the backlight module and a lateral side surface of the backlight module to be backward folded to position on an undersurface of the backlight module and the second flexible circuit board is arranged on a top surface and a lateral side surface of the mold frame of the backlight module and is located between the first flexible circuit board and the backlight module; and
wherein the second flexible circuit board has an outside surface facing away from the mold frame and the first flexible circuit board has an internal surface that faces toward and is adjacent to the outside surface of the second flexible circuit board and an external surface that is opposite to the internal surface and faces away from the second flexible circuit board, a plurality of non-height-constraint components having heights lower than the height-constraint components and being arranged on the external surface of the first flexible circuit board so as to be opposite to and projecting from the first flexible circuit board in a direction away from the second flexible circuit board.

9. The liquid crystal display device as claimed in claim 8 , wherein the first flexible circuit board and the second flexible circuit board are two separate flexible circuit boards and the first flexible circuit board and the second flexible circuit board are electrically connected to each other through a connector.

10. The liquid crystal display device as claimed in claim 8 , wherein the first flexible circui

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Chen Shihhsiang
• Liang Chao

Classifications

• G02F1/133608

  including particular frames or supporting means · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• G02F1/13452

  Conductors connecting driver circuitry and terminals of panels · CPC title

• G02F2001/133317

  Physics · mapped topic

• G02F2001/133314

  Physics · mapped topic