Shenzhen China Star Optoelectronics Technology Co., Ltd.

Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Wuhan China Star Optoelectronics Technology Co., Ltd.

Byd Company Limited

Shenzhen Byd Auto R&d Company Limited

Pengfei Liang

Taijiun Hwang

Limin Wang

Yuchao Zeng

Bo Yang

Tai-jiun Hwang

Wei Wu

Yun Yang

Xiaoning Zhang

Letao Zhang

Zeng Wang

Zhentao Tu

Zhihu Liang

Hengjie Wang

Jianguo Fu

Provided are a display panel and a method for preparing same and a display device. The preparation method includes: forming a step-shaped opening on a pixel define film using a patterning process; forming an organic photoresist in the opening; performing fluorinated plasma treatment on the pixel define film outside the opening such that the pixel define film outside the opening forms a first pixel define layer having a hydrophilic surface layer, and the remaining pixel define film forms a hydrophobic second pixel define layer; and removing the organic photoresist in the opening.

Display panel and method for preparing same and display device

A display panel and a display device are provided. The display panel includes pixel circuits arranged in an array and scan lines. Each pixel circuit in a N-th row of pixel circuits includes a driving transistor, a writing transistor, and a sensing transistor. A N-th scan line is configured to control charging of the N-th row of pixel circuits, a (N+1)-th scan line is configured to control the charging of a (N+1)-th row of pixel circuits, a gate of the writing transistor in each pixel circuit of the N-th row of pixel circuits is electrically connected to the N-th scan line, and a gate of the sensing transistor in each pixel circuit of the N-th row of pixel circuits is electrically connected to the (N+1)-th scan line.

Display panel and display device

A data processing method of a driving circuit and a driving circuit are provided. Wherein, the data processing method of the driving circuit can include obtaining a timing parameter, performing data processing based on the timing parameter and obtaining a first processing result, decoding the first processing result according to a preset reference voltage and obtaining a second processing result, and amplifying the second processing result, and outputting an amplified second processing result.

Data processing method of driving circuit and driving circuit

The present disclosure provides a driving circuit of a display device and the display device. The driving circuit includes an input unit, a control unit coupled to the input unit, and a light emitting unit coupled to the control unit. The control unit is configured to drive the light emitting unit to emit light. the control unit comprises a pulse width modulation (PWM) control unit and a pulse amplitude modulation (PAM) control unit, the PWM control unit and the PAM control unit are mutually independent, the PWM control unit is configured to control a light emitting time of the light emitting unit, and the PAM control unit is configured to control a magnitude of a driving current in the light emitting unit.

Driving circuit of display device and display device

The present invention provides a method of driving a display device, comprising the steps of: step S, providing a display device, comprising a plurality of sub-pixels arranged in an array; step S: dividing data signals of the sub-pixels in a frame of an image into a plurality of sub-frames having different time weights; step S, dividing the plurality of sub-pixels into at least two driving groups, and the plurality of sub-frames corresponding to the sub-pixels in different driving groups having different display order; and step S, driving each of the sub-pixels to display image according to a display order of one of the sub-frames corresponding to each of the sub-pixels, such that through setting different display order of sub-frames of the sub-pixels of different driving groups, the flicker caused by the digital driving can be reduced without increasing driving frequency.

Display device driving method

The present application provides a display device and a driving method of the display device. A pixel circuit controls a light-emitting duration of a light-emitting element according to a pulse width modulation scan signal, a pulse width modulation data signal, and a pulse width modulation control signal, and controls an amount of a driving current of the light-emitting element according to a pulse amplitude modulation scan signal and a pulse amplitude modulation data signal.

Display device and driving method thereof

The present disclosure provides a method of compensating AMOLED pixel difference, including the steps of: fitting the driving voltage value and the driving current value of the reference pixel. Acquiring the threshold voltage, the coefficient and the power value corresponding to the reference pixel according to the fitting result. Acquiring the threshold change of the threshold voltage corresponding to the other pixel relative to the threshold voltage corresponding to the reference pixel and the coefficient ratio of the coefficient corresponding to the other pixel relative to the coefficient corresponding to the reference pixel. Compensating the other pixel difference according to the threshold change, the coefficient ratio and the power value. The disclosure makes the driving current under the same driving voltage be consistent, improves the uniformity of the light-emitting intensity of the AMOLED and enhances the display quality of the AMOLED display device.

Method of compensating AMOLED pixel difference

Disclosed is a method for driving a pixel circuit. The method includes steps of obtaining an actual threshold voltage and an actual current-to-voltage conversion factor of a driving thin film transistor as well as actual luminous efficiency of an organic light emitting diode in sequence; and calculating a compensation data signal inputted to a source of a switching thin film transistor based on the obtained actual threshold voltage and actual current-to-voltage conversion factor of the driving thin film transistor and the obtained actual luminous efficiency of the organic light emitting diode.

Method for driving pixel circuit

A method and a device for driving an organic light emitting diode display device are provided. The method includes acquiring an equivalent voltage of pixels between a cathode and an input of a negative voltage of a power source according to a video signal; calculating a current voltage of a gate of a driving thin film transistor in a light emitting stage according to the equivalent voltage; and controlling a voltage value of a positive voltage of the power source according to the current voltage of the gate of the driving thin film transistor, so as to reduce power consumption of the organic light emitting diode display device.

Method and device for driving organic light emitting diode display device that includes acquiring each current flowing through each organic light emitting diode according to a video signal

Provided are an OLED display device drive system and an OLED display device drive method. The OLED display device drive system introduces the common voltage signal (Vcm) in the threshold voltage detection circuit () into the sub pixel driving circuit (), and in the writing stage, by applying the common voltage signal (Vcm) to the organic light emitting diode (D), the organic light emitting diode is in the negative voltage and reverse biased, and then in the light emitting stage, the common voltage signal (Vcm) is removed from the organic light emitting diode (D), and then the trans-voltage of the organic light emitting diode (D) changes from the negative voltage to the positive voltage and the light is normally emitted. Thus, the organic light emitting diode (D) has been through the positive and negative alternating current drive, and can delay the aging of the OLED and extend the OLED lifetime.

OLED display device drive system and OLED display drive method

A sensing circuit for sensing a micro current and voltage of a device to be tested is disclosed. The sensing circuit includes a pixel circuit and a sensing circuit. The sensing circuit is connected to the pixel circuit via a sensing line. The sensing circuit includes an amplifier, a first capacitor, a first switch, a second switch, a third switch, a fourth switch, a correlated double sampling (CDS) circuit, and an analog-to-digital converter (ADC).

Sensing circuit and corresponding OLED display device

The present invention provides a K value detection method of an OLED drive thin film transistor. The method sets the data signal to provide two different data voltages to make the drive thin film transistor form two different gate-source voltages, and then the currents flowing through the drive thin film transistor under the two different gate-source voltages are detected by the external detection process circuit, and the central process unit calculates and obtains the threshold voltage of the OLED drive thin film transistor according to the two gate-source voltages, the two current data and the formula based on the current formula for the driving thin film transistor. The present invention can accurately acquires the K value of the drive thin film transistor of each pixel in the OLED display element to improve the K value compensation result of the OLED drive thin film transistor for promoting the OLED display quality.

K value detection method of OLED drive thin film transistor

The present invention provides a threshold voltage detection method of an OLED drive thin film transistor. The method sets the data signal to provide two different data voltages to make the drive thin film transistor form two different gate-source voltages, and then the currents flowing through the drive thin film transistor under the two different gate-source voltages are detected by the external detection process circuit, and the central process unit calculates and obtains the threshold voltage of the OLED drive thin film transistor according to the two gate-source voltages, the two current data and the formula based on the current formula for the driving thin film transistor. The present invention can accurately acquires the threshold voltage of the drive thin film transistor of each pixel in the OLED display element to improve the threshold voltage compensation result of the OLED drive thin film transistor for promoting the OLED display quality.

Threshold voltage detection method of OLED drive thin film transistor

The present invention provides an AMOLED real-time compensation system, comprising a source drive and real-time detection compensation integration module (), in which a first operational amplifier and a second operational amplifier are provided. The positive, negative input ends of the first operational amplifier (Y) respectively receive the drive thin film transistor source target voltage and the drive thin film transistor source actual voltage, and the output end outputs the difference value (&#x394;V) of the drive thin film transistor source target voltage and the actual voltage to implement real-time detection to a threshold voltage deviation of the drive thin film transistor (T). Then, the second operational amplifier (Y) accumulates the voltage difference value (&#x394;V) of the drive thin film transistor source target voltage and the actual voltage outputted by the outputted end of the first operational amplifier (Y) to the data signal (data) voltage to implement real-time compensation to the threshold voltage deviation of the drive thin film transistor (T). The real-time measurement, real-time compensation to each pixel unit can be realized and all the gray scale data signals (data) can be effectively compensated.

AMOLED real-time compensation system

The present invention provides a compensation method of Mura phenomenon. By dividing the LCD display panel into a plurality of display partitions, and selecting a pre-selected pixel dot of a determined position in each display partition and obtaining gray scale compensation data thereof at the respectively selected gray scales, and then, calculating the respective interpolation coefficients of the requested pixel dots in the corresponding display partitions, the compensation data of partial pixel dots in the respective gray scales and the respective interpolation coefficients of the requested pixel dots can be utilized to calculate the gray scale compensation data of all pixel dots in all gray scales. The calculation difficulty is reduced to lower the computation. The consumption of the hardware storage space is decreased and the Mura compensation result can be ensured. The time and effort can be saved and it can be simple and quick.

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Shenzhen, China

Pengfei Liang