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System and method for compensation of active element variations in an active-matrix organic light-emitting diode (OLED) flat-panel display
System and method for compensation of active element variations in an active-matrix organic light-emitting diode (OLED) flat-panel display
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机译:用于补偿有源矩阵有机发光二极管(OLED)平板显示器中的有源元件变化的系统和方法
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摘要
A brightness compensation system and method of providing brightness uniformity in an active-matrix organic light-emitting diode (OLED) flat-panel display. The brightness compensation system of the present invention includes a system controller, a timing generator, a test brightness generator, a pixel address generator, a video formatter, a first and second multiplexer, a memory device, a pixel adjust device, a level shifter and driver, a current sensor, an analog-to-digital converter, a DC power supply, and an active-matrix OLED display under test. The brightness compensation system and method of the present invention subjects an active-matrix OLED display to a testing operation that alternately tests every pixel, detects its output current, which is an indicator of light output level, for a given input voltage, saves the output current value in memory, then applies a corrective voltage to each pixel, so that each pixel has the same light output (output current) as its neighboring pixel.
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