Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2008-06-17
2008-06-17
Lao, Lun-Yi (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S076000, C345S204000, C315S169300
Reexamination Certificate
active
07388564
ABSTRACT:
A display device including a current drive circuit capable of stably and correctly supplying an intended current to a light emitting element of each pixel without being affected by variations in characteristics of an active element inside the pixel and as a result capable of displaying a high quality image, wherein each pixel comprises a receiving use transistor TFT3for fetching a signal current Iw from a data line DATA when a scanning line SCAN-A is selected, a conversion use transistor TFT1for once converting a current level of a fetched signal current Iw to a voltage level and holding the same, and a drive use transistor TFT2for passing a drive current having a current level in accordance with the held voltage level through a light emitting element OLED. The conversion use thin film transistor TFT1generates a converted voltage level at its own gate by passing the signal current Iw fetched by the TFT3through its own channel. A capacitor C holds the voltage level created at the gate of the TFT1. The TFT2passes the drive current having a current level in accordance with the held voltage level through the light emitting element OLED.
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Kananen Ronald P.
Lao Lun-Yi
Rader & Fishman & Grauer, PLLC
Sony Corporation
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