公开(公告)号：US20230205008A1

公开(公告)日：2023-06-29

申请号：US18167149

申请日：2023-02-10

Applicant: Coretronic Corporation

Inventor： Ping-Yen Chen ,  Chung-Yang Fang ,  Chun-Wei Lee ,  Jung-Wei Chang

IPC: G02F1/13357 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/13363 ,  F21V8/00

CPC classification number: G02F1/133611 ,  G02F1/133607 ,  G02F1/1337 ,  G02F1/133531 ,  G02F1/13363 ,  G02B6/0053

Abstract: A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. An included angle between an extending direction of prism structures of each of two optical brightness enhancement films of the backlight module and a viewing angle control direction of the display apparatus is less than 45 degrees. A method of driving the display apparatus is provided.

公开(公告)号：US20230176405A1

公开(公告)日：2023-06-08

申请号：US17980560

申请日：2022-11-04

Applicant: Coretronic Corporation

Inventor： Ping-Yen Chen ,  Chung-Yang Fang ,  Chun-Wei Lee ,  Jung-Wei Chang

IPC: G02F1/13 ,  G02F1/1337 ,  G02F1/1347 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/137 ,  G09G3/36

CPC classification number: G02F1/1323 ,  G02F1/133757 ,  G02F1/1347 ,  G02F1/133531 ,  G02F1/133638 ,  G02F1/137 ,  G09G3/36 ,  G02F2413/03 ,  G02F2413/08 ,  G02F2413/06 ,  G02F2413/05 ,  G02F2413/12 ,  G02F2413/01 ,  G09G2320/068 ,  G09G2358/00

Abstract: A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. A first absorption axis of the first polarizer disposed between the backlight module and the first electrically-controlled element is perpendicular to a second absorption axis of the second polarizer disposed between the first and second electrically-controlled elements. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. A method of driving the display apparatus is provided.

公开(公告)号：US11150399B2

公开(公告)日：2021-10-19

申请号：US17124503

申请日：2020-12-17

Applicant: Coretronic Corporation

Inventor： Chun-Chien Liao ,  Ping-Yen Chen ,  Yung-Lung Liu ,  Chun-Wei Lee

IPC: G02B6/00 ,  F21V8/00

Abstract: A backlight module includes a light guide member, a first light source, a second light source, a plurality of first optical microstructures, and a plurality of second optical microstructures. The light guide member has a first light incident surface and an adjacent second light incident surface. The first light source is disposed at one side of the first light incident surface and is configured to generate a first light beam. The second light source is disposed at one side of the second light incident surface and is configured to generate a second light beam. The first and the second optical microstructures are disposed at the light guide member and are configured to reflect the first and the second light beams. The reflected first light beam has a first light emitting angle range without a normal viewing angle range. A display apparatus using the backlight module is also provided.