Browsing by Author "Chao Paul C. P."

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Driving circuit for dual organic light emitting diodes, and dual-pixel circuit incorporating the same
(2015-03-31)
Lee Kuei-Yu
;
Chao Paul C. P.
A dual-pixel circuit includes first and second OLEDs, and a driving circuit that includes first and second driving transistors, a capacitor, and a switching module operable between first and second modes based on a data voltage, first and second scan voltages, and first and second bias signals. When the switching module is operated in the first mode, the first OLED is forward-biased to emit light, and the second OLED is reverse-biased. When the switching module is operated in the second mode, the first OLED is reverse-biased, and the second OLED is forward-biased to emit light.
Multipoint sensing method for capacitive touch panel
(2012-03-27)
Chen Jian Ting
;
Chao Paul C. P.
;
Ruan Jyun-Yao
A multi-point sensing method used in a capacitive touch panel is disclosed to detect the voltage variation of every electrode patterned on two parallel electrode layers by means of a capacitive sensing circuit, and measure the vertical capacitance at the intersection crossed by the electrodes of the two electrode layers where the voltage variation is detected, and then compare the vertical capacitance thus measured with the initial vertical capacitance at the same intersection before touch, as a result, the intersection corresponding to the measured vertical capacitance can be determined as the touch point when the comparison result shows different.