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.

Date of Patent:
Jul. 01, 1997

Filed:

Jun. 20, 1994
Applicant:
Inventor:

Yoshikazu Hazama, Kanagawa, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345 99 ; 345 98 ; 345100 ; 345904 ;
Abstract

A flat panel display device having formed on a drive substrate, a logic circuit for combining a first inspection-use output of a horizontal scanning circuit and a second inspection-use output of a vertical scanning circuit and a combined inspection-use output terminal for outputting the combined inspection-use output obtained through the logic circuit. Another flat panel display device of the present invention has switch circuits for using a first input terminal of the horizontal scanning circuit as an inspection-use output terminal of the vertical scanning circuit and using a second input terminal of the vertical scanning circuit as an inspection-use output terminal of the horizontal scanning circuit.


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