发明名称 |
DISPLAY DEVICE AND ITS MANUFACTURING METHOD |
摘要 |
<p>A pixel circuit (Aij) has a capacitor (Cs) having one of ends connected with a gate terminal of a DTFT (driving TFT) and the other end connected with a capacitance feedback line (CSi), a current-voltage conversion circuit (14) having an input terminal to which a feedback current flowing to a DDTFT (dummy driving circuit) is input when a predetermined potential is supplied to a gate terminal of the DDTFT having TFT characteristics substantially same as those of the DTFT in the pixel circuit (Aij) during a selected period for converting the feedback current into voltage and outputting a potential according to the voltage from an output terminal, and a changeover switch (CSW) for connecting the capacitance feedback line (CSi) corresponding to the pixel circuit (Aij) with the current-voltage conversion circuit (14) during the selected period and connecting the capacitance feedback line (CSi) corresponding to the pixel circuit (Aij) during a non-selected period with a constant potential supply line for supplying a constant potential (Vref). Thus, degradation in display quality due to a variation in DTFT characteristics of the pixel circuit can be inhibited while preventing enlargement of a circuit scale in a current-control-type display device.</p> |
申请公布号 |
EP2219173(A4) |
申请公布日期 |
2011.01.26 |
申请号 |
EP20080859074 |
申请日期 |
2008.09.11 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
KISHI, NORITAKA;TAGAWA, AKIRA |
分类号 |
G09G3/30;G09F9/30;G09G3/20;H01L27/32;H01L51/50 |
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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