Abstract:
A display device includes a pixel array. The pixel array includes multiple pixel elements. At least one pixel element includes an OLED, a first transistor, a second transistor, a third transistor, a first capacitor and a second capacitor. The first transistor has a first terminal coupled to an anode of the OLED for driving the OLED. The second transistor is coupled between a second terminal of the first transistor and a reset voltage and has a control terminal receiving a reset signal. The third transistor is coupled between the anode of the OLED and a control terminal of the first transistor and has a control terminal receiving a compensation signal. The first capacitor is coupled between the control terminal of the first transistor and the anode of the OLED. The second capacitor is coupled to the first capacitor and the control terminal of the first transistor.
Abstract:
The present disclosure provides a display device including a light emitting diode and a driving module. The driving module drives the light emitting diode. The driving module includes a first switch circuit, a second switch circuit, and a driver transistor. The first switch circuit selectively writes a gray scale voltage in a first capacitor. The second switch circuit selectively writes an offset voltage in a second capacitor. The driver transistor is coupled to the light emitting diode, the first capacitor, and the second capacitor. The driver transistor adjusts a driving current being outputted to the light emitting diode according to the gray scale voltage and the offset voltage. The gray scale voltage adjusts the voltage difference between the gate and the source of the driver transistor, while the offset voltage adjusts a threshold voltage of the driver transistor.
Abstract:
A pixel driving circuit is provided, including first, second, third, fourth, and fifth switching devices and first and second capacitors. The first switching device has a first terminal coupled to a first power source voltage, and a control terminal coupled to a first scan signal line. The second switching device has a first terminal coupled to a second terminal of the first switching device, a second terminal coupled to a first node and an emitting device, and a control terminal coupled to a second node. The third switching device has a first terminal coupled between the first terminal of the second switching device and a second terminal of the first switching device, a second terminal coupled to the second node, and a control terminal coupled to a second scan signal line.