# US 9,435,941 B2 · Backlight module and fixture thereof

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- Number: US 9,435,941 B2
- Document ID: US9435941B2
- Status: Granted
- Kind: B2
- Application number: 13/979,648
- Filed: 2013-06-27
- Published: 2014-10-30
- Granted: 2016-09-06
- Earliest claimed: 2013-04-25
- Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Applicants: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Inventors: Gege Zhou
- Web page: https://patentgrep.com/patent/US9435941B2

## CPC

- G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)}
- G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels}
- G02B 6/0081: {Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging}
- G02F 1/133314: {Back frames}
- G02F 1/133317: {Intermediate frames, e.g. between backlight housing and front frame}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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 present invention is related to a technology of liquid crystal display, and specially to a fixture incorporated in a backlight module for the liquid crystal display. The fixture for backlight module comprises a backboard having a bottom board, a sidewall, and a bent portion. The sidewall has a first end and a second end, and the bottom board being interconnected with the first end. The bent portion is interconnected to the second end, and arranged on an outside of the sidewall, and creates an angle with respect to the sidewall. A plastic frame is defined with opening aligned and enveloped onto the bent portion so as to securely assemble the plastic frame to the backboard. The advanced and preferred interengagement between the backboard and the plastic frame can not only readily implement into the backlight module in which the light strip and backboard are made individually, but also can be fitted into the backlight module in which the backboar is integrally formed with driving circuit for light strip. The fixture can be readily facilitated by the existing technology and the assembly is easy while the overall configuration is robust and durable.

## Claims

### Claim 1

A fixture for backlight module, comprising:
a backboard having a bottom board, a sidewall, and a bent portion, the sidewall having a first end and a second end, and the bottom board being interconnected with the first end, the second end of the sidewall being opposite to the bottom board;
the bent portion being interconnected to the second end, and arranged on an outside of the sidewall and tightly abutting against an external surface of the sidewall, and creating an angle with respect to the sidewall; and
a plastic frame supported on the second end of the sidewall and defined with an opening aligned and enveloped onto the bent portion so as to securely assemble the plastic frame to the backboard, wherein the bent portion has a top end interconnected to the second end of the sidewall and an opposite bottom end and the bent portion is received in the opening with the top end and the bottom end thereof respectively in abutting engagement with opposite sides of the opening of the plastic frame and wherein an internal side surface of the plastic frame is located next to the external surface of the sidewall against which the bent portion tightly abuts such that an outside surface of the bent portion is located inboard of an opposite, external side surface of the plastic frame without projection beyond the external side surface of the plastic frame.

### Claim 2 (depends on 1)

The fixture as recited in claim 1, wherein the bent portion, the sidewall and the bottom board are integrally formed together.

### Claim 3 (depends on 1)

The fixture as recited in claim 1, wherein the sidewall is embedded with an integrally formed driving circuit used for driving an operation of a LED light source disposed within the sidewall.

### Claim 4 (depends on 1)

The fixture as recited in claim 1, wherein the backboard is made from metal.

### Claim 5 (depends on 1)

The fixture as recited in claim 1, wherein the backboard is made from plastic material.

### Claim 6

A backlight module configured with a front frame, a panel, a light strip, an optical element layer, wherein an fixture is incorporated, the fixture including:
a backboard having a bottom board, a sidewall, and a bent portion, the sidewall having a first end and a second end, and the bottom board being interconnected with the first end, the second end of the sidewall being opposite to the bottom board;
the bent portion being interconnected to the second end, and arranged on an outside of the sidewall and tightly abutting against an external surface of the sidewall, and creating an angle with respect to the sidewall;
a plastic frame supported on the second end of the sidewall and defined with an opening aligned and enveloped onto the bent portion so as to securely assemble the plastic frame to the backboard, wherein the bent portion has a top end interconnected to the second end of the sidewall and an opposite bottom end and the bent portion is received in the opening with the top end and the bottom end thereof respectively in abutting engagement with opposite sides of the opening of the plastic frame and wherein an internal side surface of the plastic frame is located next to the external surface of the sidewall against which the bent portion tightly abuts such that an outside surface of the bent portion is located inboard of an opposite, external side surface of the plastic frame without projection beyond the external side surface of the plastic frame; and
the optical element layer being arranged onto the bottom board, the light strip being arranged within the sidewall and facing to the optical element layer, the panel being disposed onto the plastic frame with the front frame abutting against the external side surface of the plastic frame to completely conceal the bent portion in the opening of the plastic frame, and another side of the front frame abutting against to external side of the panel so as to retain the panel.

### Claim 7 (depends on 6)

The backlight module as recited in claim 6, wherein the bent portion, the sidewall and the bottom board are integrally formed together.

### Claim 8 (depends on 6)

The backlight module as recited in claim 6, wherein light strip includes an LED light source and a driving circuit, wherein the driving circuit is disposed onto the sidewall for driving an operation of a LED light source.

### Claim 9 (depends on 6)

The backlight module as recited in claim 6, wherein the driving circuit is directly formed onto the sidewall.

### Claim 10 (depends on 6)

The backlight module as recited in claim 6, wherein the sidewall is embedded with an integrally formed driving circuit used for driving an operation of a LED light source disposed within the sidewall.

### Claim 11 (depends on 6)

The backlight module as recited in claim 6, wherein the backboard is made from plastic material.