Boe Technology Group Co., Ltd.

Hongjun Xie

Yue Wu

Yu Wang

Fei Yang

Song Meng

Quanhu Li

Zifeng Wang

Yanbing Wu

Yan Ren

Kun Cao

Weiqiang Zhang

The present disclosure provides a data driving circuit and a driving method thereof, a data driving system and a display device. In an embodiment of a data driving circuit, each digital to analog conversion unit is only used for driving sub-pixels of one color, and by controlling on-off of the switch unit, one data line interface unit is enabled to be connected to different digital to analog conversion units when driving sub-pixels of different colors. In this way, a reference voltage can be provided to the digital to analog conversion unit for driving different color display by a single physical Gamma circuit, without having to use a digital Gamma circuit. Therefore, gray scale loss caused by adjustment using the digital Gamma circuit can be avoided fundamentally.

Data driving circuit and driving method thereof, data driving system and display device

A driving method for preventing image sticking of a display panel () upon shutdown, and a display device (). The method includes: receiving a shutdown signal (S, S); and adjusting driving signals of a sub-pixel circuit () of the display panel (), so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor (T) of the sub-pixel circuit, and hence allowing the display panel () to enter an image sticking prevention mode (S, S). The method can prevent image sticking of the display panel () at the time of shutdown and hence improve the display quality.

Driving method for preventing image sticking of display panel upon shutdown, and display device

A driving circuit, a driving method and a display apparatus are provided. The driving circuit comprises: a gate driving module; a timing control module; and a chamfered wave generating circuit, an input terminal thereof being connected with the timing control module, an output terminal thereof being connected with an input terminal of the gate driving module, and being configured to discharge a power supply voltage provided by a power supply of the display apparatus under an effect of a timing control signal output by the gate driving module, so that the gate driving module outputs a chamfered wave scanning signal. The display quality of the display apparatus can be improved.

Driving circuit outputting a chamfered wave scanning signal, driving method and display apparatus

A driving method for preventing image sticking of a display panel upon shutdown, and a display device. The method includes: receiving a shutdown signal; and adjusting driving signals of a sub-pixel circuit of the display panel, so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor of the sub-pixel circuit, and hence allowing the display panel to enter an image sticking prevention mode. The method can prevent image sticking of the display panel at the time of shutdown and hence improve the display quality.

A read and write control circuit for a flash chip is disclosed which includes a timing control circuit for generating a read and write timing signal for the flash chip, and a first non-volatile memory for storing a plurality of flags corresponding to a plurality of blocks in the flash chip, each of the flags indicating whether a respective one of the blocks that corresponds thereto has been written to normally. Also disclosed is a read and write control method of a flash chip, as well as an AMOLED application circuit having the read and write control circuit for use in an electrical compensation mechanism.

Read and write control circuit and method of flash chip, and AMOLED application circuit

The embodiments of the present invention provide an OLED display device and a method for correcting image sticking of an OLED display device. The OLED display device comprises an OLED pixel array; a pixel detecting circuit for detecting aging degrees of respective OLED pixels in the OLED pixel array; wherein respective OLED pixel are aged by displaying an aging image on the OLED pixel array, such that the aging degrees of respective OLED pixels are the same; the brightness of each pixel in the aging image is inversely proportional to the aging degree of the pixel. According to the OLED display device and the method provided by the embodiments of the present invention, various approaches can be applied for detecting the aging degrees of respective OLED pixels in the OLED pixel array, such that the image sticking of the OLED display device can be corrected by adjusting the aging degrees of respective OLED pixels.

OLED display device and method for correcting image sticking of OLED display device

The present disclosure provides a method for adjusting gate driving voltages for a gate driving circuit, output terminals of the gate driving circuit being connected with gate lines, an input terminal of the gate driving circuit being connected with a propel link gate (PLG) wiring. The method includes determining a voltage-drop value at an electrical connection point along the PLG wiring with respect to an input terminal of the PLG wiring, the electrical connection point connecting an input terminal of the gate driving circuit with the input terminal of the PLG wiring; and compensating the gate driving voltage on the input terminal of the gate driving circuit based on the voltage-drop value.

Method for adjusting driving voltage, related adjusting device and display device

A display panel optical compensating apparatus, a display panel and a display panel optical compensating method are provided. The display panel optical compensating apparatus comprises a storage unit (), a data unit (), a timing control unit () and a switch (). When the switch () is in a first position, the timing control unit () has no data exchange with the storage unit (), and the data unit () receives compensated data and burns the compensated data into the storage unit (). When the switch () is in a second position, the timing control unit () reads the compensated data in the storage unit (), performs a compensating operation on display data, and outputs compensated display data. The display panel optical compensating apparatus, the display panel and the display panel optical compensating method realize simple structure, flexible operation, high stability, and fast tempo, and are suitable for mass production.

Display panel optical compensating apparatus, display panel and display panel optical compensating method

An array substrate, a display panel and a repairing method thereof are provided. In the array substrate, except the last gate line, both ends of each of the remaining gate lines are provided respectively with first leads connected to the gate line; in each group of gate integrated drive circuits, except a first level shift register, an input terminal of every other shift register is provided with a second lead connected to the input terminal; the first lead connected to one of the gate lines and the second lead connected to an input terminal of the shift register at the next level adjacent thereto have an overlapping area (A) therebetween, and are insulated from each other.

Array substrate, display panel and repairing method thereof

There are disclosed a driving circuit of an organic light emitting display panel and an organic light emitting display apparatus. The driving circuit comprises: a power supply detection circuit configured to detect an operating state of an external input power supply, send a normal signal of power supply detection when it is determined that the external input power supply is in a normal state, and send a abnormal signal of power supply detection when it is determined that the external input power supply is in an abnormal state; a clock control circuit configured to convert a received video data into image data recognizable by the organic light emitting display panel and then output it to the organic light emitting display panel when the normal signal of power supply detection sent by the power supply detection circuit is received, and output image data of black picture to the organic light emitting display panel when the abnormal signal power supply detection sent by the power supply detection circuit is received. In this way, pixel charges accumulated on respective display pixels can be released, which avoids transistors inside the display pixels from producing stress, and finally avoids occurrence of shutdown image sticking due to power-down.

Driving circuit and organic light emitting display apparatus

The embodiments of the present invention provide a display panel and a display apparatus having the display panel. The display panel includes: an array substrate, a printed circuit board, a chip on film. One end of the chip on film is attached to a connection region of the array substrate, and the other end of the chip on film is attached to the printed circuit board, and the surface of the chip on film disposed with a chip faces the array substrate, and the connection region is disposed at a side of the array substrate away from a light-emitting surface.

Display panel and display apparatus having the same

Embodiments of the invention provide a parallax barrier and a display device. The parallax barrier comprises: first and second substrates; liquid crystal, filled between the two substrates; a plurality of strip-like electrode units, disposed parallel to each other and at an interval on a side of the first substrate close to the liquid crystal; a first alignment layer, disposed above the strip-like electrode units; a second alignment layer, disposed on a surface of the second substrate opposed to the first substrate, wherein, a aligning direction of the first alignment layer is perpendicular to an extending direction of the strip-like electrode units, and aligning directions of the first and second alignment layer are opposite, wherein, after the strip-like electrode units are energized, the liquid crystal directly above the strip-like electrode units are rotated by an angle ranged from 85&#xb0; to 95&#xb0; in a plane parallel to the substrates.

Parallax barrier and display device

The present invention provides a pixel driving circuit and a driving method thereof, and a display device. The pixel driving circuit is used for driving a pixel array, wherein each pixel in the pixel array comprises four sub-pixels with different colors, and wherein the pixel driving circuit comprises: at least one first sub-pixel driving chip and at least one second sub-pixel driving chip, wherein the at least one first sub-pixel driving chip each is connected to a part of sub-pixels corresponding thereto in corresponding pixels to drive them, and the at least one second sub-pixel driving chip each is connected to the other part of sub-pixels corresponding thereto in the corresponding pixels to drive them. In the invention, noise interference can be avoided, and the display quality is improved; the cost is reduced; signal transmitting efficiency is increased and the EMI characteristic of products is improved.

Pixel driving circuit and driving method thereof, and display device

The power supply device includes an AC-DC conversion unit configured to provide a source DC voltage signal; a first DC-DC conversion unit configured to generate a first DC voltage signal and a second DC voltage signal according to the source DC voltage signal, output the first DC voltage signal to the load through a first output interface and output the second DC voltage signal to the load through a second output interface; a reference voltage signal generation unit configured to generate a reference voltage signal by taking the first DC voltage signal and the second DC voltage signal as input signals, output the reference voltage signal to the load; wherein a voltage value of the reference voltage signal is smaller than a voltage value of the first DC voltage signal and is greater than a voltage value of the second DC voltage signal.

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Beijing, China

Hongjun Xie