The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 2021
Filed:
Apr. 18, 2019
Applicant:
Chimei Corporation, Tainan, TW;
Inventors:
Assignee:
CHIMEI CORPORATION, Tainan, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01);
U.S. Cl.
CPC ...
G02F 1/133611 (2013.01); G02B 5/0215 (2013.01); G02B 5/0242 (2013.01); G02B 5/0268 (2013.01); G02B 5/0278 (2013.01); G02F 1/133603 (2013.01); G02F 1/133606 (2013.01); G02F 1/133607 (2021.01);
Abstract
An optical plate with protrusions, an optical structure, a backlight module and a display device are provided. The optical plate includes a main body and several protrusions. The main body has a first surface. The protrusions are formed on and projected from the first surface. An area ratio of the protrusions to the first surface is in a range of 0.03˜35%. The protrusions have a pitch in a range of 0.5˜10 mm, and a portion of the first surface other than the protrusions has a first center line mean roughness Ra in a range of 0.01˜0.1 μm.