摘要:
A shift register includes a plurality of electrically connected shift units. Each shift unit includes a pull-up circuit, a pull-up driving circuit, a pull-down circuit, and a pull-down driving circuit. The pull-up circuit outputs a first signal to an output node according to the first signal and a voltage of a driving node. The pull-up driving drives the pull-up circuit according to an output voltage of the previous shift unit. The pull-down driving circuit outputs a low level voltage to the driving node and the output node according to the first signal and a second signal. The pull-down circuit resets the pull-up driving circuit according to the voltage of the output node and outputs the low level voltage to the output node and the driving node according to a third signal and a fourth signal.
摘要:
A shift register includes a plurality of shift register stages for providing gate signals. Each shift register stage has a pull-up unit, a carry unit, a carry control unit, an input unit and a pull-down unit. The pull-up unit is employed to pull up a gate signal according to a driving control voltage and a first clock. The carry unit generates a preliminary start pulse signal based on the driving control voltage and the first clock. The carry control unit outputs the preliminary start pulse signal to become a forward or backward start pulse signal according to first and second bias voltages. The input unit is utilized for inputting a start pulse signal generated by a preceding or succeeding shift register stage to become the driving control voltage. The pull-down unit pulls down the gate signal, the preliminary start pulse signal and the driving control voltage according to multiple clocks.
摘要:
A shift register includes a plurality of electrically connected shift units. Each shift unit includes a pull-up circuit, a pull-up driving circuit, a pull-down circuit, and a pull-down driving circuit. The pull-up circuit outputs a first signal to an output node according to the first signal and a voltage of a driving node. The pull-up driving drives the pull-up circuit according to an output voltage of the previous shift unit. The pull-down driving circuit outputs a low level voltage to the driving node and the output node according to the first signal and a second signal. The pull-down circuit resets the pull-up driving circuit according to the voltage of the output node and outputs the low level voltage to the output node and the driving node according to a third signal and a fourth signal.
摘要:
A shift register includes a plurality of shift register stages for providing gate signals. Each shift register stage has a pull-up unit, a carry unit, a carry control unit, an input unit and a pull-down unit. The pull-up unit is employed to pull up a gate signal according to a driving control voltage and a first clock. The carry unit generates a preliminary start pulse signal based on the driving control voltage and the first clock. The carry control unit outputs the preliminary start pulse signal to become a forward or backward start pulse signal according to first and second bias voltages. The input unit is utilized for inputting a start pulse signal generated by a preceding or succeeding shift register stage to become the driving control voltage. The pull-down unit pulls down the gate signal, the preliminary start pulse signal and the driving control voltage according to multiple clocks.
摘要:
An ESD protection circuit comprises three transistors and two voltage dividers. The two source/drain terminals of a first transistor are electrically coupled to a first power line and a second power line respectively. The two source/drain terminals of a second transistor are electrically coupled to the first power line and a gate terminal of the first transistor respectively. The two source/drain terminals of a third transistor are electrically coupled to the gate terminal of the first transistor and the second power line respectively. A first voltage divider supplies a first voltage to a gate terminal of the second transistor according to a potential difference between the first power line and the second power line. A second voltage divider supplies a second voltage to a gate terminal of the third transistor according to the potential difference between the first power line and the second power line.
摘要:
A light emitting diode (OLED) display and pixel driving method thereof are disclosed. Each storage capacitor is discharged via the driving TFT and OLED until conductive current of each OLED is almost zero so as to record a sum of a voltage drop across each OLED under a specific condition and the threshold voltage of the driving TFT. By using the sum of the voltage drop across each OLED and the threshold voltage of the corresponding TFT in the subsequent OLED driving process, the luminance reduction issue caused by TFT threshold-voltage shift and OLED material decay can be solved.
摘要:
An ESD protection circuit comprises three transistors and two voltage dividers. The two source/drain terminals of a first transistor are electrically coupled to a first power line and a second power line respectively. The two source/drain terminals of a second transistor are electrically coupled to the first power line and a gate terminal of the first transistor respectively. The two source/drain terminals of a third transistor are electrically coupled to the gate terminal of the first transistor and the second power line respectively. A first voltage divider supplies a first voltage to a gate terminal of the second transistor according to a potential difference between the first power line and the second power line. A second voltage divider supplies a second voltage to a gate terminal of the third transistor according to the potential difference between the first power line and the second power line.
摘要:
An organic light-emitting diode (OLED) panel and driving method thereof is provided. The OLED panel includes a plurality of data lines, scan lines, pixels, sampling voltage lines and compensation voltage lines. The sampling voltage line transmits a compensation voltage in response to compensation signals from the data lines, threshold voltages of driving transistors and organic light emitting diodes in the pixels connected to the same scan line. The corresponding compensation voltage line adjusts data signals transmitted into the pixels connected to the same scan line in response to the compensation voltage.
摘要:
A light emitting diode (OLED) display and pixel driving method thereof are disclosed. Each storage capacitor is discharged via the driving TFT and OLED until conductive current of each OLED is almost zero so as to record a sum of a voltage drop across each OLED under a specific condition and the threshold voltage of the driving TFT. By using the sum of the voltage drop across each OLED and the threshold voltage of the corresponding TFT in the subsequent OLED driving process, the luminance reduction issue caused by TFT threshold-voltage shift and OLED material decay can be solved.
摘要:
An organic light-emitting diode (OLED) panel and driving method thereof is provided. The OLED panel includes a plurality of data lines, scan lines, pixels, sampling voltage lines and compensation voltage lines. The sampling voltage line transmits a compensation voltage in response to compensation signals from the data lines, threshold voltages of driving transistors and organic light emitting diodes in the pixels connected to the same scan line. The corresponding compensation voltage line adjusts data signals transmitted into the pixels connected to the same scan line in response to the compensation voltage.