Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-04-26
2011-04-26
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
Reexamination Certificate
active
07932880
ABSTRACT:
In order to charge and discharge parasitic capacitance of a source signal line sufficiently and program a predetermined current value into a pixel transistor, it is necessary to output a relatively large current from the source driver circuit. However, if such a large current is passed through the source signal line, the value of this current is programmed into the pixel, causing a larger than desired current to flow through an EL element. For example, if a 10 times larger current is used for programming, a 10 times larger current flows through the EL element, and thus the EL element illuminates 10 times more brightly. To obtain predetermined emission brightness, the time during which the current flows through the EL element can be reduced to 1/10 of one frame (1 F). This way, the parasitic capacitance of the source signal line can be charged and discharged sufficiently and the predetermined emission brightness can be obtained.
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Yumoto et al., “Pixel-Driving Methods for Large-Sized Poly-Si AM -OLED Displays,” Proc. Of Asia Display, Asia Display, IDW '01, pp. 1395-1398, 2001.
Takahara Hiroshi
Tsuge Hitoshi
Chowdhury Afroza Y
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Shalwala Bipin
Toshiba Matsushita Display Technology Co., Ltd.
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