Computer graphics processing and selective visual display system – Display driving control circuitry
Reexamination Certificate
2005-03-23
2008-11-18
Lefkowitz, Sumati (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Reexamination Certificate
active
07453450
ABSTRACT:
A liquid crystal display apparatus is constituted whereby multiple source driver circuits provided with a driver IC are connected to the periphery of a liquid crystal display panel, and power supply voltages supplied from the outside are sequentially supplied from a specific source driver circuit to an adjacent source driver circuit, and a wire resistance calculation wire is formed for the driver IC in the voltage supply direction upstream, and is approximately equivalent to the signal wires extending from the upstream driver IC to the adjacent driver IC in the voltage supply direction downstream. The driver IC calculates the wire resistance by impressing a certain calculated voltage to one end of the wire resistance calculation wire, and then detects the voltage on the other end, calculates the amounts of the drop in voltage level based on the calculated wire resistance, and outputs the power supply voltages increased by the calculated respective amounts of the voltage drop to the downstream driver IC. Accordingly, a display apparatus is provided for preventing a drop in the power supply voltages sequentially supplied, thereby inhibiting malfunctioning of the driver ICs, resulting in improved display quality.
REFERENCES:
patent: 6211849 (2001-04-01), Sasaki et al.
patent: 6384805 (2002-05-01), Takada
patent: 6937233 (2005-08-01), Sakuma et al.
patent: 6982706 (2006-01-01), Doi et al.
patent: 7079123 (2006-07-01), Shino et al.
patent: 7126597 (2006-10-01), Shino et al.
patent: 2003/0234760 (2003-12-01), Lin et al.
patent: 2004/0183985 (2004-09-01), Taguchi
patent: 2006/0012744 (2006-01-01), Wang et al.
patent: 62-238684 (1987-10-01), None
patent: 2001-056481 (2001-02-01), None
patent: 2005048834 (2005-05-01), None
Morita Satoshi
Sano Yutaka
Amadiz Rodney
Katten Muchin & Rosenman LLP
Lefkowitz Sumati
Sanyo Electric Co,. Ltd.
Tottori Sanyo Electric Co. Ltd.
LandOfFree
Display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4042740