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:
Jul. 13, 2004
Filed:
Nov. 09, 2001
Jwei Wien Liu, Plano, TX (US);
Thomas A. Kocian, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A drop-in aperture , which improves the performance and lowers the cost of electro-optical SLM packages. The disclosed package provides a separate metal light shield (aperture) and antireflective coated cover , and positions the aperture inside the package in close proximity to the SLM's surface. This approach further uses an on-chip SLM light shield to define the projected screen border, thereby making the edge definition of the metal drop-in aperture less critical. Therefore, the cover can be mounted well away from the plane of the SLM, which relaxes the defect requirements of the cover and lowers the cost of the overall package. The package of this invention improves the performance and lifetime and lowers the cost of projection display systems.