Computer graphics processing and selective visual display system – Display driving control circuitry – Intensity or color driving control
Reexamination Certificate
2004-05-25
2009-02-03
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Intensity or color driving control
Reexamination Certificate
active
07486303
ABSTRACT:
An object of the present invention is to provide a signal line driving circuit capable of easily and optimally adjusting the gamma characteristics of R, G, and B self-emitting element groups (e.g., organic EL element groups) such that each gamma characteristic matches the characteristics of the self-emitting panel by accommodating variations among the characteristics of the R, G, and B self-emitting element groups, thereby providing enhanced image quality and versatility.A self-emitting display driving circuit (a signal line driving circuit)302includes 3 gray-scale voltage generating circuits311and 3 control registers308for R, G, and B self-emitting element groups, respectively, and these gray-scale voltage generating circuits and control registers can be adjusted separately. This arrangement makes it possible to accommodate variations among the characteristics of the R, G, and B self-emitting element groups and thereby provide enhanced image quality on the self-emitting display.
REFERENCES:
patent: 6593934 (2003-07-01), Liaw et al.
patent: 2002/0186230 (2002-12-01), Kudo et al.
patent: 2003/0043132 (2003-03-01), Nakamura
Akai Akihito
Kudo Yasuyuki
Okado Kazuo
Amadiz Rodney
Antonelli, Terry Stout & Kraus, LLP.
Lefkowitz Sumati
Renesas Technology Corp.
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