Backlight module and liquid crystal display device
AssigneeWuhan China Star Optoelectronics Technology Co., Ltd.
InventorsQi Wei, Fancheng Liu
Life of this patent
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Abstract
A backlight module and a liquid crystal display device are provided. The backlight module includes a positioning structure disposed in one side of a flexible circuit board away from a back plate. The positioning structure is disposed outside an area corresponding to a light-emitting chip, and an anti-positioning structure is disposed in the optical film, so that the positioning structure disposed in the side of the light-emitting chip can be matched with the anti-positioning structure correspondingly. The optical film is positioned and fixed, so that the positioning of the optical film is realized and a width of a frame of the backlight module is reduced.
Claims17
A backlight module, comprising:
- a back plate;
- a flexible circuit board disposed in one side of the back plate;
- a plurality of light-emitting chips arranged in an array and disposed in one side of the flexible circuit board away from the back plate;
- and
- an optical film disposed at one side of the array of the light-emitting chips away from the flexible circuit board;
- wherein the backlight module further comprises a plurality of positioning structures, the positioning structures are disposed in one side of the flexible circuit board away from the back plate, and the positioning structures are disposed outside an area corresponding to the light-emitting chips, a height of at least one of the positioning structures is greater than or equal to a maximum thickness of the optical film, and a plurality of anti-positioning structures are disposed in the optical film corresponding to the positioning structures,
- wherein the positioning structures include a positioning column, and the anti-positioning structures include a through hole corresponding to the positioning column, wherein the through hole is configured to receive and mate with the positioning column,
- wherein the backlight module further includes at least one reflective structure, the reflective structure is disposed in one side of the flexible circuit board away from the back plate, the reflective structure is disposed between the light-emitting chips, a height of the reflective structure is greater than a height of each of the light-emitting chips, and the height of the reflective structure is less than or equal to a minimum thickness of the optical film.
A liquid crystal display device, comprising a liquid crystal display panel and a backlight module, wherein the backlight module comprises:
- a back plate;
- a flexible circuit board disposed in one side of the back plate;
- a plurality of light-emitting chips arranged in an array and disposed in one side of the flexible circuit board away from the back plate;
- and
- an optical film disposed at one side of the array of the light-emitting chips away from the flexible circuit board;
- wherein the backlight module further comprises a plurality of positioning structures, the positioning structures are disposed in one side of the flexible circuit board away from the back plate, and the positioning structures are disposed outside an area corresponding to the light-emitting chips, a height of at least one of the positioning structures is greater than or equal to a maximum thickness of the optical film, and a plurality of anti-positioning structures are disposed in the optical film corresponding to the positioning structures,
- wherein the positioning structures include a positioning column, and the anti-positioning structures include a through hole corresponding to the positioning column, wherein the through hole is configured to receive and mate with the positioning column, wherein the positioning structures include a first positioning structure and a second positioning structure
- wherein the anti-positioning structures include a first anti-positioning structure and a second anti-positioning structure, the optical film includes a prism sheet and a diffusion sheet, the first anti-positioning structure is disposed in the prism sheet, the second anti-positioning structure is disposed in the diffusion sheet, the first anti-positioning structure corresponds to the first positioning structure and the second positioning structure, the second anti-positioning structure corresponds to the second positioning structure;
- or the first anti-positioning structure corresponds to the first positioning structure and the second positioning structure, the second anti-positioning structure corresponds to the first positioning structure and the second positioning structure.
Dependencies are inferred from the claim text.