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:
Feb. 14, 2012
Filed:
Dec. 23, 2008
Hsin-hung Chuang, Taipei Hsien, TW;
Hsin-Hung Chuang, Taipei Hsien, TW;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, New Taipei, TW;
Abstract
An exemplary method for making a plurality of light blocking plates is provided. Firstly, a photoresist layer is formed on a substrate. Secondly, the photoresist layer is exposed using a gray scale photomask. Thirdly, the photoresist layer is developed to form a plurality of conical frustums on the substrate, and each of the conical frustums tapers in a direction away from the substrate. Fourthly, an opaque to-be-solidified film is formed on the substrate, and each of the conical frustums extends through the to-be-solidified film. Fifthly, the to-be-solidified film is solidified. Sixthly, the solidified film is separated from the substrate and the conical frustums, thus obtaining a light blocking plate module including a plurality of light blocking plates. Lastly, the light blocking plate module is cut into a plurality of individual light blocking plates.