发明名称 |
Pixel driving circuit of electro-luminescent display device and driving method thereof |
摘要 |
The present invention relates to a method for properly controlling the drive current when driving an Active Matrix OLED (AMOLED) in order to prevent the brightness from being changed due to temperature changes in a panel or the performance deterioration of the OLED. The present invention comprises: an OLED (organic light emitting diode) panel that displays an image; pixel driving circuit including: a drive current control unit that outputs a current control signal corresponding to a detected current supplied to the OLED panel; and a comparator that compares the current control signal with a power supply voltage and outputs a bias voltage; and a transistor that receives the power supply voltage and that supplies a drive current to the OLED panel corresponding to the bias voltage.
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申请公布号 |
US2008122758(A1) |
申请公布日期 |
2008.05.29 |
申请号 |
US20070987391 |
申请日期 |
2007.11.29 |
申请人 |
KIM IN-HWAN;BYUN SEUNG-CHAN;KIM JIN-HYOUNG |
发明人 |
KIM IN-HWAN;BYUN SEUNG-CHAN;KIM JIN-HYOUNG |
分类号 |
G09G3/30 |
主分类号 |
G09G3/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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