Double-sides liquid crystal devices and backlight modules

Patent metadata

Field	Value
Publication number	US-9436037-B2
Application number	US-201414373479-A
Country	US
Kind code	B2
Filing date	Jun 24, 2014
Priority date	Jun 20, 2014
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A double-sided LCD includes a first liquid crystal panel, a second liquid crystal panel arranged opposite to the first liquid crystal panel, and a backlight module arranged therebetween. The backlight module includes: a middle frame being arranged and assembled between the first liquid crystal panel and the second liquid crystal panel; and a light emitting assembly comprises a first lamp board facing toward the first liquid crystal panel, a second lamp board facing toward the second liquid crystal panel, and at least two middle plate being arranged between the first lamp board1 and the second lamp board, a gap is formed between two adjacent middle plates, and the first lamp board and the second lamp board respectively comprises a plurality of light sources. In addition, a backlight module for double-sided LCDs is also disclosed.

First claim

What is claimed is:

1. A double-sided LCD, comprising:
a first liquid crystal panel, a second liquid crystal panel arranged opposite to the first liquid crystal panel, and a backlight module arranged therebetween, the backlight module comprises: a middle frame being arranged and assembled between the first liquid crystal panel and the second liquid crystal panel;
a light emitting assembly comprises a first lamp board facing toward the first liquid crystal panel, a second lamp board facing toward the second liquid crystal panel, and at least two middle plate being arranged between the first lamp board and the second lamp board, a gap is formed between two adjacent middle plates, and the first lamp board and the second lamp board respectively comprises a plurality of light sources;
a first diffusion plate between the first lamp board and the first liquid crystal panel, and a second diffusion plate arranged between the second lamp board and the second liquid crystal panel; and
at least one fixing bar being passed through the gaps, and being fixed with a first sidewall and a second sidewall of the middle frame such that the light emitting assembly is fixed within the middle frame, and wherein a number of the fixing bars is the same with the number of the gaps.

2. The double-sided LCD as claimed in claim 1 , wherein the first sidewall of the middle frame comprises a first through hole corresponding to each of the gaps, the second sidewall of the middle frame comprises a second through hole corresponding to each of the gaps, the first sidewall and the second sidewall are arranged to be opposite to each other, the fixing bar passes through the first through hole, the gaps, the second through hole in turn so as to fix the light emitting assembly within the receiving space of the middle frame.

3. The double-sided LCD as claimed in claim 1 , wherein the first sidewall and the second sidewall of the middle frame respectively comprises protrusions, the first sidewall and the second sidewall are arranged to be opposite to each other, the fixing bar passes through the corresponding gaps, and the fixing bar is fixed on the protrusions such that the light emitting assembly is fixed within the middle frame.

4. The double-sided LCD as claimed in claim 1 , wherein two ends of the fixing bar are fixed with the first sidewall and the second sidewall of the middle frame via adhesive or screws such that the light emitting assembly is fixed within the middle frame.

5. A backlight module for double-sided LCDs, comprising:
a first liquid crystal panel, a second liquid crystal panel arranged opposite to the first liquid crystal panel, and a backlight module arranged therebetween, the backlight module comprises: a middle frame comprising a first sidewall and a second sidewall opposite to the first sidewall;
a light emitting assembly being arranged with the middle frame and being fixed respectively with the first sidewall and the second sidewall, the light emitting assembly comprises a first lamp board and a second lamp board, a surface of the first lamp board facing away from the second lamp board comprises a plurality of light sources, and the surface of the second lamp board facing away from the first lamp board comprises a plurality of light sources; and
a first diffusion plate between the first lamp board and the first liquid crystal panel, and a second diffusion plate arranged between the second lamp board and the second liquid crystal panel;
wherein the light emitting assembly comprises at least two middle plates being arranged between a first lamp board and a second lamp board, and gaps are formed between the middle plates; and
the backlight module further comprises one fixing bar being passed through the gaps and being fixed with the first sidewall and the second sidewall of the middle frame such that the light emitting assembly is fixed within the middle frame, and wherein a number of the fixing bars is the same with the number of the gaps.

6. The backlight module as claimed in claim 5 , wherein the first sidewall of the middle frame comprises a first through hole corresponding to each of the gaps, the second sidewall of the middle frame comprises a second through hole corresponding to each of the gaps, the first sidewall and the second sidewall are arranged to be opposite to each other, the fixing bar passes through the first through hole, the gap, the second through hole in turn so as to fix the light emitting assembly within the receiving space of the middle frame.

7. The backlight module as claimed in claim 5 , wherein the first sidewall and the second sidewall of the middle frame respectively comprises protrusions, the first sidewall and the second sidewall are arranged to be opposite to each other, the fixing bar passes through the corresponding gaps, and the fixing bar is fixed on the protrusions such that the light emitting assembly is fixed within the middle frame.

8. The backlight module as claimed in claim 5 , wherein two ends of the fixing bar are fixed with the first sidewall and the second sidewall of the middle frame via adhesive or screws such that the light emitting assembly is fixed within the middle frame.

Assignees

• Shenzhen China Star Optoelect
• Shenzhen China Star Optoelect

Inventors

• Ning Chao

Classifications

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F2001/133342

  Physics · mapped topic

• G02F1/133603

  with LEDs · CPC title

• G02F2001/133317

  Physics · mapped topic

• G02F1/133342

  for double-sided displays · CPC title