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. 21, 2007
Filed:
Jan. 12, 2004
Applicants:
Ching-yu Chao, Taipei, TW;
Wen-jiunn Hsieh, Jhonghe, TW;
Inventors:
Ching-Yu Chao, Taipei, TW;
Wen-Jiunn Hsieh, Jhonghe, TW;
Assignee:
Chunghwa Picture Tubes, Ltd., Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for manufacturing a diffuser for a backlight module is disclosed. The method includes providing a transparent substrate; forming a first transparent photoresist layer on the transparent substrate; spreading a plurality of masking particles on the first transparent photoresist layer; exposing and developing the first transparent photoresist layer; removing the masking particles; etching the exposed region of the first transparent photoresist layer to form a first scattering array; and optionally forming a passivation layer on the first transparent photoresist layer.