Intellectual Valley Law, P.C.
Display apparatus, backlight module in display apparatus, and method of displaying image
A backlight module is provided. The backlight module includes a light guide plate; a plurality of reflective gratings on a first side of the light guide plate; and a plurality of reflectors on a second side of the light guide plate. A respective one of the plurality of reflective gratings is configured to diffract and reflect a portion of light totally reflected in the light guide plate into diffracted light transmitting across the light guide plate from the first side toward the second side. A portion of the diffracted light has a respective wavelength range to be received by a respective reflector. The respective one of the plurality of reflectors is configured to reflect the portion of the diffracted light having the respective wavelength range transmitting from the second side toward the first side to a position between the respective grating and an adjacent reflective grating.
BOE Technology Group Co., Ltd.
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Wei Qiuyu Jifeng Xiandong Xiaochuan Xianqin
Wang Ling Tan Meng Chen Meng