Everdisplay Optronics (shanghai) Limited

Everdisplay Optronics (shanghai) Co., Ltd.

Ying-Hsiang Tseng

Lina Xiao

Ching-Hung Lee

Jiangang Wang

Yuh-Wey Lin

Qiaoyu Pan

Yen-Jen Lai

Chang-Ming Chiu

The present disclosure provides a pixel driving circuit, a display panel and a driving method of the pixel driving circuit. The pixel driving circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a sixth transistor, a driving transistor, a first capacitor and a fifth transistor. A gate electrode of the fifth transistor is coupled to a third input terminal, the third input terminal is coupled to a third control signal lead, and the third control signal lead maintains a low level in both the triggering sub-stage and the maintaining sub-stage of the capacitor resetting stage. The present disclosure can reduce the hysteresis of the driving transistor and improve the afterimage phenomenon of a display screen.

Pixel driving circuit, display panel and driving method of pixel driving circuit

A transmitting control line driver, an OLED panel having same, and a display device. The transmitting control line driver comprises multiple stages of transmitting control line driver units. A first time sequence signal transmission line (Ck) is coupled to first input ends (CKE) in odd stages of the transmitting control line driver units and second input ends (CKE) in even stages of the transmitting control line driver units. A second time sequence signal transmission line (CK) is coupled to second input ends (CKE) in the odd stages of the transmitting control line driver units and first input ends (CKE) in the even stages of the transmitting control line driver units. A signal output end (out) of each stage of a transmitting control line driver unit is coupled to a third input end (in) of a subsequent stage of the transmitting control line driver unit.

Transmitting control line driver, OLED panel having same, and display device

The present disclosure relates to a display device, a light-emitting control signal generating device and method. The generation device includes: a two-to-two multiplexer, configured to select the first input signal to be output from a first output terminal of the two-to-two multiplexer according to the first control signal, or select the second input signal to be output from a second output terminal of the two-to-two multiplexer according to the first control signal; a first operational amplifier, configured to receive the first input signal and output a first output signal; a second operational amplifier, configured to receive the second input signal and output a second output signal; and a three-to-one multiplexer, configured to receive the first output signal, an intermediate signal and the second output signal, and select one of them to be output as a light-emitting control signal according to a second control signal.

Display device, light-emitting control signal generating device and method

The present disclosure relates to a shift register, a gate driver circuit and a display panel. The shift register includes first to eighth transistors and first and second capacitors. In the exemplary embodiments of the present disclosure, a shift register unit is composed of a relatively small number of transistors and capacitors, and thus the wiring areas occupied by the shift register unit and the gate driver circuit composed of a plurality of the shift register units can be reduced, thereby providing technical support for designing display panels with higher resolution and narrower bezel. Meanwhile, because the shift register unit and the gate driver circuit have a relatively simple structure, the manufacturing processes can be simplified and thereby costs can be reduced.

Shift register unit, gate driver circuit and display panel

The present disclosure discloses a shift register unit, a gate drive circuit, and a display device. The shift register unit includes first to twelfth switch elements, a first capacitor, and a second capacitor. The first switch element switches on in response to an input signal, the second switch element switches on in response to a first clock signal, the third, the ninth and the twelfth switch elements switch on in response to a signal of the second node, the fourth switch element switches on in response to a signal of the first node, and the fifth, the seventh and the eleventh switch elements switch on in response to a second clock signal.

Shift register unit, gate drive circuit, and display device

An organic electroluminescence display includes a plurality of scan lines, a plurality of data lines, at least one first pixel circuit, and at least one second pixel circuit. The scan lines and the data lines cross. Each of the first and second pixel circuits is electrically connected to one of the scan lines and one of the data lines. The first pixel circuit includes at least one first driving transistor having a first channel in a first channel direction. The second pixel circuit includes at least one second driving transistor having a second channel in a second channel direction. The second channel direction is different from that of the first channel direction.

Organic electroluminescence display

The present disclosure provides a display device, an OLED pixel driving circuit and a driving method therefore. The OLED pixel driving circuit includes: an electroluminescent element, a switching unit, a storage unit, a compensation unit, a driving transistor, a reset unit and a partition unit; wherein, the switching unit is connected with a data signal and is connected with the storage unit; the compensation unit is connected with the storage unit; the storage unit is connected with a gate electrode of the driving transistor; a source electrode of the driving transistor is connected with a driving voltage, a drain electrode thereof is connected with the compensation unit; the partition unit is connected with the drain electrode and is connected with the electroluminescent element; the reset unit is connected with a reset signal and is connected with the gate electrode.

Display device, OLED pixel driving circuit and driving method therefor

The present application relates to a light emission control and scan driver and a display device having the drivers. A light emission control and scan driver includes a plurality of driver stages for outputting light emission control signals and scan signals, each of which including: a light emission control driving unit for providing control signals to the scan units and a scan driving unit. Control signals may be light emission control signals. The light emission control driving unit has a first input signal terminal, a first clock terminal, a second clock terminal and a light emission control output terminal, and outputs light emission control signals at the light emission control output terminal based on input signals input at the first input signal terminal, light emission timing control signals input at the first clock terminal and inverted light emission timing control signals input at the second clock terminal.

Light emission control driver, light emission control and scan driver and display device

The present disclosure provides a display device, an OLED pixel driving circuit and a driving method therefor. The OLED pixel driving circuit includes: an electroluminescent element, a switching unit, a storage unit, a compensation unit, a driving transistor, a reset unit and a partition unit; wherein, the switching unit is connected with a data signal and is connected with the storage unit; the compensation unit is connected with the storage unit; the storage unit is connected with a gate electrode of the driving transistor; a source electrode of the driving transistor is connected with a driving voltage, a drain electrode thereof is connected with the compensation unit; the partition unit is connected with the drain electrode and is connected with the electroluminescent element; the reset unit is connected with a reset signal and is connected with the gate electrode.

The present disclosure provides a pixel driving circuit and a display device, the pixel driving circuit includes: a control unit; a capacitor; a first transistor; a second transistor; a third transistor and a fourth transistor. The present disclosure can effectively compensate the variation of the threshold voltage of the drive thin film transistor by controlling the thin film transistors, thus prevent nonuniform brightness of a screen due to nonuniform current, and extend lifespan of the screen.

Growing community of inventors

Shanghai, China

Ying-Hsiang Tseng