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:
May. 30, 2006
Filed:
Jun. 01, 2004
Tsuyoshi Yasuoka, Naka-gun, JP;
Hirokazu Yoshida, Tokushima, JP;
Tsuyoshi Yasuoka, Naka-gun, JP;
Hirokazu Yoshida, Tokushima, JP;
Nichia Corporation, Anan, JP;
Abstract
A highly reliable LED display apparatus is provided in which dust and other similar particles are prevented from entering spaces formed between light-emitting diodes and openings in a mask member provided on a circuit board. The LED display apparatus has the circuit board, the light-emitting diodes provided at predetermined positions thereon, and the mask member which is disposed approximately parallel to the circuit board. The mask member has openings at positions corresponding to the light-emitting diodes which are placed inside the respective openings. In the LED display apparatus described above, the openings of the mask member have fine projections on side surfaces thereof. The fine projections can be formed on the mask member by a flock processing technique.