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Implementation of an adaptive pixel calibration technique for high performance amorphous silicon (a-Si:H) thin film transistor (TFT) based organic light emitting diode (OLED) displays has been presented. We use the projection algorithm to estimate the device parameters, and thereby the pixel transconductance, with the help of a sample pixel representation of the display array
A large sector of display market comprises portable devices including cell phones, personal organizers, PDAs, portable electronic games, etc. Important design considerations for displays employed in these applications are power consumption and cost. Hydrogenated Amorphous silicon (a-Si:H) active matrix organic light emitting diode (AMOLED) displays are promising technology for these applications....
Active-matrix organic light emitting diode (AMOLED) displays have been considered a potential candidate for the next generation of flat panel displays due to the ability of AMOLED in providing wider viewing angle, larger color gamut, and lower fabrication cost. In this paper we present a new optical feedback pixel circuit that preserves the advantages of active matrix structure while demanding simple...
A scheme of driving AMOLED displays with amorphous silicon (a-Si) thin film transistors (TFTs) is presented. By exploiting current feedback, a transresistance amplifier as column driver, and an accelerating current pulse, the driving scheme provides fast programming and low sensitivity of OLED current to shift in VT in a-Si TFTs. Prototypes of the pixel circuit and the transresistance amplifier were...
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