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US 11,112,649 B1Granted
Backlight module and display device
AssigneeTcl China Star Optoelectronics Technology Co., Ltd.
InventorJinyang Zhao
Life of this patent
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Abstract
A backlight module and a display device are provided. A blue laser is emitted by a light emitting unit of the backlight module, and a red laser generator and a green laser generator included in the laser array with an optical echo-wall mode microcavity are disposed on the light-emitting unit, so that the backlight formed by the laser array has a larger viewing angle and higher backlight uniformity.
Claims20
A backlight module, comprising:
- a light-emitting unit;
- a laser array disposed on the light-emitting unit, wherein the laser array comprises a red laser generator and a green laser generator, and the red laser generator and the green laser generator comprise an optical echo-wall mode microcavity;
- a prism sheet disposed on the laser array;
- and
- a diffusion sheet disposed on the prism sheet;
- wherein the light-emitting unit is configured to emit a blue laser and irradiates the red laser generator and the green laser generator with the blue laser, the red laser generator and the green laser generator excite the red laser and the green laser, and the red laser, the blue laser, and the green laser are mixed by the prism sheet and the diffusion sheet to emit a white laser.
3 more elements
A display device, comprising:
- a display module;
- and
- a backlight module disposed on the display module, wherein the backlight module comprises a light-emitting unit, a laser array, a prism sheet, and a diffusion sheet;
- wherein the laser array is disposed on the light-emitting unit, and the laser array comprises a red laser generator and a green laser generator, and the red laser generator and the green laser generator comprise an optical echo-wall mode microcavity;
- wherein the prism sheet is disposed on the laser array;
- wherein the diffusion sheet is disposed on the prism sheet;
- and
- wherein the light emitting unit is configured to emit a blue laser and irradiates the blue laser to the red laser generator and the green laser generator, the red laser generator and the green laser generator excite the red laser and the green laser, and the red laser, the blue laser, and the green laser are mixed by the prism sheet and the diffusion sheet to emit a white laser.
5 more elements
Dependencies are inferred from the claim text.