Hefei Xinsheng Optoelectronics Technology Co., Ltd.

Boe Technology Group Co., Ltd.

Boe Technology Groupco., Ltd.

Chun Cao

Min He

Wenchao Bao

Song Meng

Fei Yang

Xiaolong Wei

Wei Chen

Yongchao Huang

Enming Xie

Meng Li

Can Yuan

Leilei Cheng

Dongxu Han

Haixia Xu

A method for driving a display panel and a display device are provided. The driving method includes supplying, during a data writing stage of each row of pixel circuits, a driving voltage VA[i] to the data line corresponding to each of the pixel circuits in a row, and supplying a compensation voltage VS to the second node of each of the pixel circuits in the row, and VA[i]=Vdata[i]+Vth[i]+VS, where Vdata[i] is an original data voltage of an ipixel circuit of the pixel circuits, i is a positive integer, Vth[i] is a threshold voltage of the driving transistor of the ipixel circuit, and a range from which a value of the compensation voltage VS is selected is [&#x2212;Vth_min, 0), and Vth_min is a minimum value among all of the threshold voltages of the driving transistors of the pixel circuits of the display panel.

Method for driving display panel and display device

A compensation method for a display panel and a display device are provided. The display panel includes a plurality of sub-pixels, and at least one of the plurality of sub-pixels includes a sensing capacitor. The method includes: obtaining a first voltage value and a second voltage value of the sensing capacitor, obtaining a temperature change amount of a sub-pixel corresponding to the sensing capacitor according to the first voltage value and the second voltage value of the sensing capacitor, determining a value of a compensation parameter of the sub-pixel according to the temperature change amount of the sub-pixel and a preset correspondence between the temperature change amount of the sub-pixel and the compensation parameter; and performing a compensation on a driving voltage of the sub-pixel according to the value of the compensation parameter as determined.

Compensation method for display panel and display panel

The present disclosure discloses a pixel circuit compensation method and device, and a display device. The method includes: when the display panel is in a preset display state, sensing a preset mobility compensation value corresponding to a driving transistor in the pixel circuit; according to the preset mobility compensation value, adjusting an initial mobility compensation value corresponding to the driving transistor to a target mobility compensation value, wherein a difference between the target mobility compensation value and the preset mobility compensation value is less than a threshold; based on the target mobility compensation value, when the display panel is in a non-display state, compensating a mobility of the driving transistor in a preset compensation manner.

Pixel circuit compensation method and device, and display device

A method for controlling a charging time of a display panel includes: during t+k&#x394;t in a (k+1)-th blanking time, writing a data voltage to a gate of a driving transistor, and detecting a voltage Vof a second electrode of the driving transistor; during a t+(k+r)&#x394;t in a (k+1+r)-th blanking time, writing the data voltage to the gate of the driving transistor, and detecting a voltage Vof the second electrode of the driving transistor; determining whether &#x394;V=V&#x2212;Vis less than or equal to a target voltage difference VT; if &#x394;V&#x2264;VT, taking the T=t+k&#x394;t as an expected charging time of a sub-pixel; if &#x394;V&#x3e;VT, cyclically performing the charging step described above to obtain &#x394;V=V&#x2212;V, and comparing &#x394;Vwith the target voltage difference VT, until &#x394;V&#x2264;VT, taking t+(k+p+r&#x2212;1)&#x394;t as the expected charging time of the sub-pixel. p is taken from 1, and increases by 1 for each cycle.

Method for controlling charging time of display panel, and electronic apparatus

The present disclosure provides a set-voltage generation unit, a set-voltage generation method and a display device. The set-voltage generation unit includes a voltage generation circuit. The set-voltage generation unit is configured to generate a set voltage according to a gamma main voltage such that a ratio between a variation of the set voltage and a variation of the gamma main voltage is a voltage coefficient K, and K is a positive number less than or equal to 1.

Set-voltage generation unit, set-voltage generation method and display device

The present disclosure relates to a method for converting RGB image signals into RGBW image signals. The method includes converting RGB image signals of pixels of each received image frame into corresponding RGB luminance values respectively, performing a conversion from an RGB luminance value to an RGBW luminance value for each pixel, including performing a first conversion to the RGBW luminance value by determining a first conversion amount based on the corresponding RGB luminance value of the pixel to obtain a first RGBW luminance value of the pixel, performing a second conversion to the RGBW luminance value by determining a second conversion amount based on the first RGBW luminance values of the pixel and its adjacent one or more pixels to obtain a second RGBW luminance value of the pixel, and converting the second RGBW luminance values of the pixels of the image frame into corresponding RGBW image signals respectively.

Method and apparatus for converting RGB image signal into RGBW image signal

The present disclosure provides a method and a device for driving a display panel. The method of the present disclosure includes: determining a plurality of candidate time differences according to a highest brightness threshold of the sub-pixels of each color; for each candidate time difference, displaying, by the display panel, a same test picture using the candidate time difference, and detecting picture display quality of the display panel when the test picture is displayed by the display panel using the candidate time difference; and determining a candidate time difference corresponding to an optimal picture display quality as the time difference.

Method and device for driving display panel

A circuit board includes a substrate, an input binding region and at least two output binding regions disposed on the substrate. Each of the output binding regions includes a plurality of binding portions, and the number of the binding portions included in different output binding regions is different. The substrate is configured to output a signal received by the input binding region to respective binding portions included in each of the output binding regions.

Circuit board, display device and method for manufacturing the same

An overvoltage protection unit, an overvoltage protection method, a sampling module, a pixel circuit and a display apparatus are provided. The overvoltage protection unit includes a comparator and an output switch, where a first input terminal of the comparator is supplied with a predetermined maximum voltage, a second input terminal of the comparator is supplied with an actual sampled voltage, an output terminal of the comparator is connected with a control terminal of the output switch and the actual sampled voltage is supplied to an input terminal of the output switch; the output switch selectively outputs the actual sampled voltage in accordance with an output signal of the comparator.

Overvoltage protection unit, overvoltage protection method, sampling module, pixel circuit and display apparatus

The present disclosure relates to a pixel circuit, a compensation method and a display device. The pixel circuit includes a first switching circuit for supplying a data voltage to a first node in response to a first scan signal being valid, a second switching circuit for conductively connecting a sensing signal line with a second node in response to a second scan signal being valid, a reset circuit for supplying a reset voltage to the sensing signal line in response to a reset control signal being valid, a light-emitting element, and a driving transistor for enabling, when the light-emitting element emits light, the sensing signal line to be charged in response to the second scan signal being valid and the reset control signal being invalid, the voltage of the sensing signal line is sensed after it was charged so as to compensate the data voltage.

Pixel circuit, compensation method for pixel circuit and display device

The present disclosure provides a printed circuit board including a plurality of conductive layers separated by insulating medium and a plurality of connection structures. Each connection structure penetrates each of the conductive layers. The plurality of conductive layers comprises a first conductive layer in which first signal lines are located and a second conductive layer in which second signal lines are located, and the first and second signal lines are connected via the connection structures. Anti-pads surrounding the connection structures are provided on others of the plurality of conductive layers except the first and the second conductive layers. For a same connection structure, the anti-pads surrounding the connection structure include adjacent anti-pads and nonadjacent anti-pads. Size of the adjacent anti-pads in any direction parallel to the conductive layers is smaller than that of the nonadjacent anti-pads. The present disclosure also provides a display apparatus.

Printed circuit board and display apparatus

The present disclosure provides a sensing circuit and a voltage compensation method. With the sensing circuit according to the present disclosure, a capacitance value of a capacitor to be measured on an internal sensing line of a display panel is determined, a compensation voltage for the internal sensing line is determined according to the capacitance value of the capacitor to be measured, and then voltage compensation is performed on the internal sensing line according to the compensation voltage corresponding to the capacitor to be measured.

Growing community of inventors

Beijing, China

Chun Cao