Combined image sensor and display device
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United States of America Patent
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Mar 20, 2012
Grant Date -
Sep 16, 2010
app pub date -
Jun 11, 2007
filing date -
Jun 12, 2006
priority date (Note) -
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Abstract
A combined image sensor and display device comprises an array of device elements (18), each of which comprises a display pixel (M4, C2, CLC). The display pixels have data inputs connected to column data lines (SL, 6,6′). The array includes sensor elements (10), each comprising a transistor (M1), an integrating capacitor (C1) and a photodiode (D1) connected together to an integrating node (11). The transistor (M1) is connected between column data lines (6,6′). The capacitor (C1) is connected to a control input (RS) which receives a first voltage during a sensing phase for switching off the transistor (M1) and a second voltage during a reading phase for enabling the transistor (M1).
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