Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2005-06-09
2009-06-02
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C341S169000
Reexamination Certificate
active
07542016
ABSTRACT:
An Electron Emission Device (EED) that can reduce background-brightness resulting from collisions between anodes and only a few electrons when data is not supplied to an electron emission display panel includes: an electron emission display panel including scan electrodes, data electrodes, and anodes, electrons colliding with the anode in accordance with a voltage difference between the scan electrodes and the data electrodes; a discharge current measuring unit adapted to measure a discharge current value of the electron emission display panel; a comparison unit adapted to output control signals proportional to a current difference between the measured discharge current value and an inputted reference value; a scan voltage control unit adapted to amplify an output voltage of sequentially outputted scanning signals to scan electrode lines of the electron emission display panel according to scan driving signals having a predetermined frequency, the scan voltage control unit operating in accordance with the control signals of the comparison unit; and a scan driving unit adapted to sequentially supply scan signals having an amplified output voltage to the scan electrode lines, the scan signals having a changed voltage difference between the anode and the scan electrode lines due to the amplified output voltage.
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Office Action from the Chinese Patent Office issued in Applicant's corresponding Chinese Patent Application No. 200510089697.5 dated Feb. 1, 2008.
Registration Determination Certificate from the Chinese Patent Office issued in Applicant's corresponding Chinese Patent Application No. ZL200510089697.5 dated Dec. 24, 2008.
Bushnell , Esq. Robert E.
Hjerpe Richard
Leiby Christopher E
Samsung SDI & Co., Ltd.
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