# US 2017/0285254 A1 · Backlight module and display device

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2017/0285254 A1
- Document ID: US20170285254A1
- Status: Published application
- Kind: A1
- Application number: 15/240,490
- Filed: 2016-08-18
- Published: 2017-10-05
- Earliest claimed: 2016-03-30
- Assignees: Le Holdings (Beijing) Co., Ltd.; Le Shi Zhi Xin Electronic Technology (Tian Jin) Limited
- Applicants: Le Holdings (Beijing) Co., Ltd.; Le Shi Zhi Xin Electronic Technology (Tian Jin) Limited
- Inventors: Qiaowei Chong
- Web page: https://patentgrep.com/patent/US20170285254A1

## CPC

- G02B 6/0088: {of the light guide or other optical sheets in the package}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Disclosed are a backlight module and a display device. The backlight module includes a back cover including an accommodation space, a light guiding plate located in the accommodation space, and a lamp bar located between an incident side end face of the light guiding plate, and a blocking wall of the back light, wherein the backlight module further includes: a cam assembly located between a non-incident side end face of the light guiding plate and the blocking wall of the back cover, wherein the cam assembly includes a central shaft fixed to the back cover, a cam body pivoted around the central axis, and a spring pushing the cam body against the non-incident side end face of the light guiding plate.

## Claims

### Claim at position 1

1-8. (canceled)

### Claim 9

A backlight module, comprising a back cover comprising an accommodation space, a light guiding plate located in the accommodation space, and a lamp bar located between an incident side end face of the light guiding plate, and a blocking wall of the back light, wherein the backlight module further comprises:
a cam assembly located between a non-incident side end face of the light guiding plate, and the blocking wall of the back cover, wherein the cam assembly comprises a central shaft fixed to the back cover, a cam body pivoted around the central axis, and a spring pushing the cam body against the non-incident side end face of the light guiding plate.

### Claim 10 (depends on 9)

The backlight module according to claim 9, wherein the cam body is a circular cam body installed eccentrically relative to the central shaft.

### Claim 11 (depends on 9)

The backlight module according to claim 9, wherein the cam body is a triangular cam body, a square cam body, or an irregular cam body.

### Claim 12 (depends on 9)

The backlight module according to claim 9, wherein the spring is a columnar helix spring with one end being fixed to the central shaft, and the other end being fixed to the cam body.

### Claim 13 (depends on 9)

The backlight module according to claim 9, wherein the spring is a planar spiral spring with one end being fixed to the central shaft, and the other end being fixed to the cam body.

### Claim 14 (depends on 9)

The backlight module according to claims 9, wherein there are at least two groups of the cam assemblies between the non-incident side end face of the light guiding plate, and the blocking wall of the back cover.

### Claim 15 (depends on 9)

The backlight module according to claims 9, wherein the cam assembly is arranged between each the non-incident side end face of the light guiding plate, and the blocking wall of the back cover.

### Claim 16

A display device, comprising a backlight module comprising an accommodation space, a light guiding plate located in the accommodation space, and a lamp bar located between an incident side end face of the light guiding plate, and a blocking wall of the back light, wherein the backlight module further comprises:
a cam assembly located between a non-incident side end face of the light guiding plate, and the blocking wall of the back cover, wherein the cam assembly comprises a central shaft fixed to the back cover, a cam body pivoted around the central axis, and a spring pushing the cam body against the non-incident side end face of the light guiding plate.

### Claim 17 (depends on 16)

The display device according to claim 16, wherein the cam body is a circular cam body installed eccentrically relative to the central shaft.

### Claim 18 (depends on 16)

The display device according to claim 16, wherein the cam body is a triangular cam body, a square cam body, or an irregular cam body.

### Claim 19 (depends on 16)

The display device according to claim 16, wherein the spring is a columnar helix spring with one end being fixed to the central shaft, and the other end being fixed to the cam body.

### Claim 20 (depends on 16)

The display device according to claim 16, wherein the spring is a planar spiral spring with one end being fixed to the central shaft, and the other end being fixed to the cam body.

### Claim 21 (depends on 16)

The display device according to claim 16, wherein there are at least two groups of the cam assemblies between the non-incident side end face of the light guiding plate, and the blocking wall of the back cover.

### Claim 22 (depends on 16)

The display device according to claim 16, wherein the cam assembly is arranged between each the non-incident side end face of the light guiding plate, and the blocking wall of the back cover.