# US 2014/0152941 A1 · Backlight module and lcd device

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- Number: US 2014/0152941 A1
- Document ID: US20140152941A1
- Status: Published application
- Kind: A1
- Application number: 13/701,830
- Filed: 2012-10-25
- Published: 2014-06-05
- Earliest claimed: 2012-09-29
- Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Applicants: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Inventors: Shihhsiang Chen; Ruilian Yang
- Web page: https://patentgrep.com/patent/US20140152941A1

## CPC

- G02B 6/0088: {of the light guide or other optical sheets in the package}
- G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)}
- G02F 1/1336: {Illuminating devices}
- G02F 1/133314: {Back frames}
- 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 disclosure provides a backlight module and a liquid crystal display (LCD) device, including: a backplane, a light guide panel (LGP) arranged in the backplane, a light source arranged on a side of the backlight module and opposite to the light incident surface of the LGP, and a limit frame arranged at an edge of the LGP to limit movement of the LGP. The limit frame is made of sheet metal, the limit frame is configured with a limit structure and a fixing structure connected to the limit structure, the limit frame is fixed to the backplane by the fixing structure, and the limit structure butts and presses on an edge of the light emitting surface of the LGP.

## Claims

### Claim 1

A backlight module, comprising:
a backplane;
a light guide panel (LGP) arranged in the backplane;
a light source arranged on a side of the backlight module and opposite to the light incident surface of the LGP; and
a limit frame arranged at an edge of the LGP;
wherein the limit frame limits movement of the LGP and is made of sheet metal, the limit frame is configured with a limit structure, and a fixing structure connected to the limit structure, the limit frame is fixed to the backplane by the fixing structure, and the limit structure butts and presses on an edge of a light emitting surface of the LGP; and
wherein the light source is arranged on the limit structure, and a sidewall of the backplane is configured with a cutout that receives the light source; and
wherein a nub and a notch engaged with the nub are arranged between the fixing structure of the limit frame and the sidewall of the backplane, and the limit frame is fixed to the backplane by the nub engaging with the notch.

### Claim 2

A backlight module, comprising:
a backplane;
a light guide panel (LGP) arranged in the backplane;
a light source arranged on a side of the backlight module and opposite to the light incident surface of the LGP; and
a limit frame arranged on an edge of the LGP;
wherein the limit frame limits movement of the LGP and is made of sheet metal, the limit frame is configured with a limit structure and a fixing structure connected to the limit structure, the limit frame is fixed to the backplane by the fixing structure, and the limit structure is butted and pressed on an edge of a light emitting surface of the LGP.

### Claim 3 (depends on 2)

The backlight module of claim 2, wherein the light source is arranged on the limit structure, and a sidewall of the backplane is configured with a cutout that receives the light source.

### Claim 4 (depends on 2)

The backlight module of claim 2, wherein a nub and a notch engaged with the nub are arranged between the fixing structure of the limit frame and a sidewall of the backplane, and the limit frame is fixed to each other the backplane by the nub engaging with the notch.

### Claim 5 (depends on 4)

The backlight module of claim 4, wherein the notch is arranged on the fixing structure of the limit frame, and the nub is arranged on the sidewall of the backplane.

### Claim 6 (depends on 4)

The backlight module of claim 4, wherein the notch is arranged on the sidewall of the backplane, and the nub is arranged on the fixing structure of the limit frame.

### Claim 7 (depends on 2)

The backlight module of claim 2, wherein the limit frame is fixed to the backplane by screws.

### Claim 8 (depends on 2)

The backlight module of claim 2, wherein the backplane is configured with a protrusion that supports the light guide panel (LGP).

### Claim 9 (depends on 2)

The backlight module of claim 2, wherein the sheet metal is made of copper alloy.

### Claim 10 (depends on 2)

The backlight module of claim 2, wherein the sheet metal is made of aluminum alloy.

### Claim 11

A liquid crystal display (LCD) device, comprising:
backplane;
a light guide panel (LGP) arranged in the backplane;
a light source arranged on a side of the backlight module and opposite to the light incident surface of the LGP; and
a limit frame arranged at an edge of the LGP;
wherein the limit frame limits movement of the LGP and is made of sheet metal, the limit frame is configured with a limit structure and a fixing structure connected to the limit structure, the limit frame is fixed to the backplane by the fixing structure, and the limit structure is butted and pressed on an edge of a light emitting surface of the LGP.

### Claim 12 (depends on 11)

The liquid crystal display (LCD) device of claim 11, wherein the light source is arranged on the limit frame, and the sidewall of the backplane is configured with a cutout that receives the light source.

### Claim 13 (depends on 11)

The liquid crystal display (LCD) device of claim 11, wherein a nub and a notch engaged with the nub are arranged between the fixing structure of the limit frame and a sidewall of the backplane, and the limit frame is fixed to the backplane by the nub engaging with the notch.

### Claim 14 (depends on 13)

The liquid, crystal display (LCD) device of claim 13, wherein the notch is arranged on the fixing structure of the limit spacing, and the nub is arranged on the sidewall of the backplane.

### Claim 15 (depends on 13)

The liquid crystal display (LCD) device of claim 13, wherein the notch is arranged on the sidewall of the backplane, and the nub is arranged on the fixing structure of the limit frame.

### Claim 16 (depends on 11)

The liquid crystal display (LCD) device of claim 11, wherein the limit frame is fixed to the backplane by screws,

### Claim 17 (depends on 11)

The liquid crystal display (LCD) device of claim 11, wherein the backplane is configured with a protrusion that supports the light guide panel (LGP).

### Claim 18 (depends on 11)

The liquid crystal display (LCD) device of claim 11, wherein the sheet metal component is made of copper alloy.

### Claim 19 (depends on 11)

The liquid crystal display (LCD) device of claim 11, wherein the slice metal component is made of aluminum alley.