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:
Nov. 13, 2012
Filed:
Sep. 16, 2008
Kazuaki Ano, Hiji-machi, JP;
Wen Yu Lee, Taipei, TW;
Kazuaki Ano, Hiji-machi, JP;
Wen Yu Lee, Taipei, TW;
Texas Instruements Incorporated, Dallas, TX (US);
Abstract
The symbolization of a semiconductor device () is incorporated in a thin sheet () attached to the top of the device, facing outwardly with its bare surface. The material of the sheet (about 1 to 10 μm thick) includes regions of a first optical reflectivity and a first color, and regions () of a second optical reflectivity and a second color, which differ from, and contrast with, the first reflectivity and color. Preferred choices for the sheet material include the compound o-cresol novolac epoxy and the compound bisphenol-A, more preferably with the chemical imidazole added to the film material. A preferred embodiment of the invention is a packaged device with a semiconductor chip a () connected to a substrate (); the connection is achieved by bonding wires () forming an arch with a top. The chip, the wire arches, and the substrate are embedded in an encapsulation material (), which borders on the attached top sheet so that the arch tops touch the border ().