公开(公告)号：US11327207B2

公开(公告)日：2022-05-10

申请号：US17161029

申请日：2021-01-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liangliang Jin ,  Zezhou Yang ,  Ruoyu Ma ,  Qing Liu

IPC: G02F1/13357 ,  G02B5/04 ,  F21V8/00 ,  G02B26/08 ,  G02F1/1335

Abstract: Embodiments of the present disclosure relate to a prism film, a backlight module, and a display device. The prism film includes a substrate and a plurality of prisms on a surface of the substrate, each of the plurality of prisms having a triangular cross section, and having a first optical surface, a second optical surface, and a third optical surface that are perpendicular to the triangular cross section, wherein the first optical surface is parallel to the surface of the substrate, the first optical surface and the second optical surface form a first bottom angle, the first optical surface and the third optical surface form a second bottom angle, and at least one of the first bottom angle and the second bottom angle of the plurality of prisms gradually changes.

公开(公告)号：US11982904B2

公开(公告)日：2024-05-14

申请号：US17254829

申请日：2020-06-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liangliang Jin ,  Ruoyu Ma ,  Zezhou Yang ,  Haiwei Sun ,  Zhongbao Wu ,  Chuandong Liao

IPC: G02F1/1335 ,  G02B5/04 ,  G02F1/13363

CPC classification number: G02F1/133607 ,  G02B5/045 ,  G02F1/133634

Abstract: A light conversion structure, backlight device and virtual reality display device are provided. The light conversion structure includes: a transparent substrate including first and second surfaces arranged oppositely; multiple first prism structures arranged in an array on the first surface, each first prism structure includes first and second light-entering surfaces arranged adjacently or oppositely, the first and second light-entering surfaces are for receiving the first and second incident light respectively; multiple second prism structures arranged in an array on the second surface, each second prism structure includes the first and second light-exiting surfaces arranged adjacently or oppositely; the first and second incident light enter the first prism structure from the first and second light-entering surfaces respectively, and exit from the first and second light-exiting surfaces respectively at the first and second predetermined angles respectively; a difference between the first and second predetermined angles is less than a predetermined value.

公开(公告)号：US11536435B2

公开(公告)日：2022-12-27

申请号：US17332749

申请日：2021-05-27

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

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

Abstract: 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：US10921497B2

公开(公告)日：2021-02-16

申请号：US16199733

申请日：2018-11-26

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liangliang Jin ,  Zezhou Yang ,  Ruoyu Ma ,  Qing Liu

IPC: G02B5/04 ,  F21V8/00 ,  G02B26/08 ,  G02F1/13357

Abstract: Embodiments of the present disclosure relate to a prism film, a backlight module, and a display device. The prism film includes a substrate and a plurality of prisms on a surface of the substrate, each of the plurality of prisms having a triangular cross section, and having a first optical surface, a second optical surface, and a third optical surface that are perpendicular to the triangular cross section, wherein the first optical surface is parallel to the surface of the substrate, the first optical surface and the second optical surface form a first bottom angle, the first optical surface and the third optical surface form a second bottom angle, and at least one of the first bottom angle and the second bottom angle of the plurality of prisms gradually changes.