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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.:

US 8604521 B1

PDFFull Text
Date of Patent:
Dec. 10, 2013

Filed:

Aug. 21, 2008

Optically controlled read only memory

Applicant:

Yi-tyng Wu, Chia-I, TW;

Inventor:

Yi-Tyng Wu, Chia-I, TW;

Assignee:

United Microelectronics Corp., Science-Based Industrial Park, Hsin-Chu, TW;

Attorneys:

Winston Hsu

Scott Margo

Primary Examiner:

Michael Jung

Int. Cl.
CPC ...
H01L 27/148 (2006.01); H01L 23/52 (2006.01); H01L 31/062 (2012.01); H01L 31/113 (2006.01); H01L 21/02 (2006.01); H01L 31/00 (2006.01); H01L 21/00 (2006.01); G11C 5/06 (2006.01); G11C 13/04 (2006.01); G11C 17/06 (2006.01); G11C 11/36 (2006.01); G11C 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optically controlled read only memory is disclosed. The optically controlled read only memory includes a substrate, a plurality of memory cells having optical sensors disposed on the substrate, and at least one shielding structure disposed on the optical sensor, in which the shielding structure selectively shields a portion of the optical sensor according to a predetermined layout. Preferably, the optically controlled read only memory of the present invention is capable of providing two types or more program codes and outputting different program codes carrying different function under different lighting condition.

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