Active matrix OLED driving circuit using current feedback전류 귀환을 이용한 AMOLED 구동회로

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An active matrix organic light emitting diode AMOLED driving circuit using current feedback that ensures the uniformity of brightness in pixels of a flat panel display and shortens the time required to input accurate current to respective pixels in the driving circuit. The prevent invention provides an AMOLED driving circuit using current feedback, comprising: a current digital-to-analog converter outputting a current corresponding to input digital data; a first differential amplifier connected to the current digital-to-analog converter and controlling the input data current and a driving current of a driving transistor of a pixel circuit to be identical to each other; a current mirror mirroring driving current of an organic light emitting diode of the pixel circuit to an input side of the first differential amplifier; and a second differential amplifier coupled to the current mirror and controlling charge and discharge speeds of parasitic capacitance of the pixel circuit.
Assignee
KAIST
Country
US (United States)
Issue Date
2011-01-25
Application Date
2006-10-04
Application Number
11543588
Registration Date
2011-01-25
Registration Number
07876292
URI
http://hdl.handle.net/10203/236498
Appears in Collection
EE-Patent(특허)
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