发明名称 |
ACTIVE MATRIX TYPE OLED DISPLAY DEVICE AND ITS DRIVING CIRCUIT |
摘要 |
PROBLEM TO BE SOLVED: To provide an OLED(organic light emitting diode) driving pixel circuit having satisfactory display performance. SOLUTION: In this pixel circuit, four transistors are constituted in a pixel and after first and second scanning lines GL1, GL2 which are connected respectively to the gate electrode of a second transistor MSH and that of a third transistor MWR are made active and the gate electrode and the drain electrode of a first transistor MDR are made to be in conduction state via the second transistor MSH and a current having a value corresponding to a video signal is made to flow from a power source to a signal line through the first and third transistors MDR, MWR and the first scanning line GL1 is made inactive, the second scanning line GL2 is made inactive and thereafter a third scanning line GL3 which is connected to the gate electrode of a fourth transistor MCH is made active and a current having a value corresponding to the video signal is made to flow through an OLED through the fourth transistor MCH. |
申请公布号 |
JP2003043995(A) |
申请公布日期 |
2003.02.14 |
申请号 |
JP20010231443 |
申请日期 |
2001.07.31 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
OTA MASUYUKI;OKUNO TAKESHI;NAKAMURA AKIKO;NUMATA YUKIO |
分类号 |
H05B33/08;G09F9/00;G09F9/30;G09G3/20;G09G3/30;H01L27/32;H01L51/50;H05B33/14 |
主分类号 |
H05B33/08 |
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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