Chunghwa Picture Tubes, Ltd.

Hsiang-Yun Wei

Chun-Yao Huang

Jan-Ruei Lin

Chun-Yuan Hsu

Che-Cheng Kuo

The present invention discloses an OLED driving device, including a first switch transistor, a first transistor, a second switch transistor, a storage capacitor and a second transistor. The first switch transistor is used to receive a data signal, and output the data signal by the control of a first scan signal. The first transistor is used to compensate the effect of the threshold voltage of the second transistor. The second switch transistor is used to receive a voltage signal, and output the voltage signal by the control of a second scan signal. The storage capacitor is used to store a data voltage. The second transistor is electrically connected to the second switch transistor through the storage capacitor. The present invention can efficiently release the charges from the storage capacitor, enhance display effect, and change the input voltage level for adapting different operating voltages of integrate circuits.

Organic light emitting diode driving device

A shift register, a driving circuit and a display device using the same are disclosed. The shift register includes a 1and a 2rectifying elements and 1&#x2dc;4transistors. 1source/drains of the 1&#x2dc;3transistors receive a common voltage respectively. The gates of the 1and 3transistors and a 2source/drain of the 2transistor are coupled to a 2terminal of the 2rectifying element. The gates of the 2and 4transistors and a 2source/drain of the 1transistor are coupled to a 2terminal of the 1rectifying element. A 1source/drain of the 4transistor is coupled to a 2source/drain of the 3transistor. The 1terminals of the 1and 2rectifying elements respectively receive input signals and a 1clock signal. A 2source/drain of the 4transistor receives a 2clock signal.

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Taipei, Taiwan

Hsiang-Yun Wei