发明名称 Current drive circuit and display device using same pixel circuit, and drive method
摘要 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 TFT 3 for fetching a signal current Iw from a data line DATA when a scanning line SCAN-A is selected, a conversion use transistor TFT 1 for once converting a current level of a fetched signal current Iw to a voltage level and holding the same, and a drive use transistor TFT 2 for 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 TFT 1 generates a converted voltage level at its own gate by passing the signal current Iw fetched by the TFT 3 through its own channel. A capacitor C holds the voltage level created at the gate of the TFT 1 . The TFT 2 passes the drive current having a current level in accordance with the held voltage level through the light emitting element OLED.
申请公布号 US7379039(B2) 申请公布日期 2008.05.27
申请号 US20040784828 申请日期 2004.02.24
申请人 SONY CORPORATION 发明人 YUMOTO AKIRA
分类号 G09G3/32;G09G3/10;G09G3/20;G09G5/00;H01L27/32;H05B37/00 主分类号 G09G3/32
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