公开(公告)号：US11536435B2

公开(公告)日：2022-12-27

申请号：US17332749

申请日：2021-05-27

申请人： BOE TECHNOLOGY GROUP CO., LTD.

发明人： Liangliang Jin ,  Zezhou Yang ,  Shubai Zhang ,  Ruoyu Ma ,  Jian Sang

IPC分类号： F21V3/04 ,  G02B5/02 ,  G02F1/1335 ,  G02F1/13357

摘要： The present disclosure provides a light homogenizing film, a backlight module and a display device. The light homogenizing film includes a substrate film layer on which a plurality of light homogenizing structures are arranged in an array. The light homogenizing structure includes: a first recess in a regular pyramid shape positioned on a light incident surface of the substrate film layer, and a second recess in a regular pyramid shape positioned on a light emitting surface of the substrate film layer. On a plane where a main body of the substrate film layer is located, an orthographic projection of the second recess completely covers an orthographic projection of the first recess, and the orthographic projections of the first and second recesses are regular polygons which have overlapped centers, the same number of sides and the same orientation.

公开(公告)号：US10921506B2

公开(公告)日：2021-02-16

申请号：US16407459

申请日：2019-05-09

申请人： Hefei BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

发明人： Hai Tang ,  Liang Gao ,  Lu Gao ,  Yezhou Tan ,  Jian Sang ,  Lu Yu ,  Heling Zhu ,  Dongmei Xie

IPC分类号： G02B6/00 ,  F21V8/00 ,  G09G3/22

摘要： A light guide plate, a method of fabricating a light guide plate, a backlight module and a display device are disclosed. The light guide plate includes a light guide layer and a grating layer. The light guide layer includes a light incident surface, a light exit surface, and a bottom surface opposite to the light exit surface. The grating layer is disposed on a side of the light guide layer with the light exit surface being on the side and including a plurality of grating strips. The bottom surface is provided with a plurality of optical dots. The plurality of optical dots are configured to deflect light rays from the light incident surface toward the grating strips. The plurality of grating strips are configured to deflect light rays emitted from the light exit surface toward a normal line of the light exit surface.