发明名称 |
Semiconductor device for a TFTdisplay matrix |
摘要 |
<p>A light emitting device capable of performing signal electric current write-in operations at high speed and without dispersion in the characteristics of TFTs structuring pixels influencing the brightness of light emitting elements is provided. The gate length L of a transistor in which an electric current flows during write-in of a signal electric current is made shorter than the gate length L of a transistor in which electric current supplied to EL elements flows during light emission, and high speed write-in is thus performed by having a larger electric current flow than the electric current flowing in conventional EL elements. A converter and driver transistor (108) is used for signal write-in. By using the converter and driver transistor (108) and a driver transistor (107) when supplying electric current to a light emitting element during light emission, dispersion in the transistor characteristics can be made to have less influence on brightness than when using a structure in which write-in operations and light emission operations are performed using different transistors. <IMAGE></p> |
申请公布号 |
EP1296310(A2) |
申请公布日期 |
2003.03.26 |
申请号 |
EP20020020442 |
申请日期 |
2002.09.11 |
申请人 |
SEL SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KIMURA, HAJIME |
分类号 |
G09G3/32;G11C5/14;G09G3/30;(IPC1-7):G09G3/36 |
主分类号 |
G09G3/32 |
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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