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Pixel circuits including feedback capacitors and reset capacitors, and display systems therefore
专利权人:
Ignis Innovation Inc.
发明人:
Chaji Gholamreza
申请号:
US201213470059
公开号:
US9747834(B2)
申请日:
2012.05.11
申请国别(地区):
美国
年份:
2017
代理人:
Nixon Peabody LLP
摘要:
A display with a pixel circuit for driving a current-driven emissive element includes a feedback capacitor in series between the emissive element and a programming node of the pixel circuit. During driving, variations in the operating voltage of the emissive element due to variations in the current conveyed through the emissive element by a driving transistor are accounted for. The feedback capacitor generates voltage adjustments at the programming node that correspond to the variations at the emissive element, and thus reduces variations in light emission. A reset capacitor connected to a select line is selectively connected to the gate terminal of the driving transistor and resets the driving transistor prior to programming. The select line adjusts the voltage on the gate terminal to reset the driving transistor by the capacitive coupling of the select line to the gate terminal created by the reset capacitor.
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