Zhi-Dong Shen

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Much of the organic light emitting diode (OLED) characterization published to date addresses the high current regime encountered in the operation of passively addmsed displays. Higher efficiency and brightness can be obtained by driving with an active matrix, but the lower instantaneous pixel currents place the OLEDs in a completely different operating(More)
A polysilicon transistor based active matrix organic light emitting diode (AMOLED) pixel with high pixel to pixel luminance uniformity is reported. The new pixel powers the OLEDs with small constant currents to ensure consistent brightness and extended life. Excellent pixel to pixel current drive uniformity is obtained despite the threshold voltage(More)
A critical problem for grid security is how to gain secure solution for Grid virtual organization (VO). In Grid practice at present, issues of VO security rely on non-distributed policy management and related PKI mechanism. A practical but difficult solution is to enforce fine granularity policy over distributed sites. The emerging Trusted Computing (TC)(More)
The design of an active matrix organic light emitting diode (AMOLED) display using a polysilicon thin film transistor pixel is described. Characteristics of the OLED response in the low current regime are described and their impact on the design of integrated driver circuitry is discussed. Integrated data and select scanners which generate the signals(More)
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