Calfee, Halter & Griswold LLP
Backlight unit and display device
A backlight unit includes a waveguide layer and a light source component. The waveguide layer includes a light-entering surface located its side surface, a bottom surface located at its bottom, and a light-exiting surface located at its top. A first grating layer is arranged at the bottom surface. A refractive layer is arranged at the light-exiting surface. The light source component is located beside the light-entering surface. The refractive layer includes a refractive lens unit. The refractive lens unit converges the diffracted light dispersed by means of the diffraction caused by the first grating layer when the backlight unit is in operation.
BOE TECHNOLOGY GROUP CO., LTD.
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Yafeng Wei Xiaochuan Jifeng Xianqin Xiandong Jian
Yang Wang Chen Tan Meng Meng Gao