发明公开
EP1604347A1 LIGHT EMISSIVE ACTIVE MATRIX DISPLAY DEVICES WITH OPTICAL FEEDBACK EFFECTIVE ON THE TIMING, TO COUNTERACT AGEING
审中-公开
对于发光有源矩阵显示装置TO时序有效光学反馈来的过时计数器
- 专利标题： LIGHT EMISSIVE ACTIVE MATRIX DISPLAY DEVICES WITH OPTICAL FEEDBACK EFFECTIVE ON THE TIMING, TO COUNTERACT AGEING
- 专利标题（中）： 对于发光有源矩阵显示装置TO时序有效光学反馈来的过时计数器
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申请号： EP04715415.8申请日： 2004-02-27
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公开(公告)号： EP1604347A1公开(公告)日： 2005-12-14
- 发明人: DEANE, Steven C.Philips I.P Property & Standards , FISH, David A.c/o Philips I.P. & Standards , SHANNON, John M.c/o Philips I.P. & Standards , HECTOR, Jason R.c/o Philips I.P. & Standards
- 申请人： Koninklijke Philips Electronics N.V.
- 申请人地址： Groenewoudseweg 1 5621 BA Eindhoven NL
- 专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人： Koninklijke Philips Electronics N.V.
- 当前专利权人地址： Groenewoudseweg 1 5621 BA Eindhoven NL
- 代理机构： Williamson, Paul Lewis
- 优先权： GB0305632 20030312; GB0317821 20030730
- 国际公布： WO2004084168 20040930
- 主分类号： G09G3/32
- IPC分类号： G09G3/32
摘要：
In an active matrix display, each pixel has a storage capacitor for storing a voltage to be used for addressing a drive transistor. A discharge transistor is provided for discharging the storage capacitor thereby to switch off the drive transistor. The timing of this is controlled by a light-dependent device which is illuminated by the display element. The drive transistor is controlled to provide a constant light output from the display element, and the duration is controlled in dependence on the data voltage. Optical feedback is used to alter further the timing of operation of the discharge transistor to provide ageing compensation of the display element and compensation for changes in the drive transistor.
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