Shenzhen China Star Optoelectronics Technology Co., Ltd.

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

Other

Tcl China Star Optoelectronics Technology Co., Ltd.

Yichien Wen

Mingjong Jou

Shan Wang

Jimu Kuang

Xiaolong Chen

Bobiao Chang

Xuebing Zhou

Liwei Chu

Yugang Bao

Shensian Syu

Shu Wen

Chunhuai Li

A driving method, a driving device and a liquid crystal display device are provided. The driving device of the LCD display device outputs the target grey value of the nth frame according to the original grey value of the nth frame, the original grey value of the (n&#x2212;1)th frame and the look-up table. This improves the luminance of the sub-pixel of the nth frame, shortens the required charging time of the sub-pixel when the (n+1)th frame is being displayed. Thus, the sub-pixel of the (n+1)th frame could be efficiently charged and the luminance of the sub-pixel could be increased. In addition, since the luminance increase of the (n+1)th frame is more than that of the nth frame, the contrast of the LCD display could be improved.

Driving method, driving device and related LCD display device

A liquid crystal display panel and a driving method thereof. The liquid crystal display panel comprises: a pixel unit module comprising a plurality of pixel units arranged in a matrix; a plurality of scanning lines, each of the scanning lines connected to at least two of the pixel units on a same row; a gate driving circuit connected to the plurality of scanning lines and providing gate signals for the scanning lines to control the pixel units, which the scanning lines are connected to, to be turned on; a plurality of data lines respectively connected to at least one pixel unit on different columns; a data driving circuit, which is connected to the plurality of data lines and provides data signals for the data lines to charge the turn-on pixel units which the data lines are connected to.

Liquid crystal display panel and driving method thereof

The invention provides an AMOLED pixel driving circuit and method. The AMOLED pixel driving circuit is disposed with a voltage switching module corresponding to each row of sub-pixels, and the voltage switching module is connected to a corresponding row of sub-pixels and scan line corresponding to the row of sub-pixels. The scan signal on the scan line controls the corresponding voltage switching module to provide different power supply voltages to the row of sub-pixels when the switching TFTs in the corresponding row of sub-pixels are turned on and off, thereby compensating for the voltage difference change caused by the parasitic capacitance between the drain and the gate of the switching TFT when the switching TFT changes from on to off, ensuring a stable current flowing through the OLED, and improving the display consistency of the sub-pixels to ensure display quality.

AMOLED pixel driving circuit and driving method

A pixel driving system for AMOLED display device and driving method are disclosed. The pixel driving system for AMOLED display device includes a sub-pixel driving circuit and a node voltage generating module electrically connected to the sub-pixel driving circuit. Wherein the node voltage generating module is inputted with the a red-green-blue display data for processing the red-green-blue display data, obtaining an APL value of a current frame of the AMOLED display device, and according to the APL value and a preset node voltage calculation formula, the node voltage generating module generates a corresponding node voltage and outputting to the source of the driving thin-film transistor. Adjusting the gate-to-source voltage of the driving thin-film transistor by using the APL value, thereby adjusting the driving current flowing through the light-emitting diode to adjust the entire display brightness of the AMOLED display device.

Pixel driving system for AMOLED display device and driving method

The present invention provides a line over driving (LOD) table adjustment method and a system thereof, which divides a display panel into M*N blocks. In an i-th row and a j-th column in the LOD table corresponding to a block, according to a brightness value of a grayscale value of a pixel of a previous line and a current line corresponding to an initial grayscale value of over driving pixels, calculate a target brightness value of an adjustment screen corresponding to a combination of the grayscale value of the pixel of the previous line and the current line corresponding to the initial grayscale value of over driving pixels, and obtain a measured brightness value of the adjustment screen to compare whether the difference between the target brightness value and the measured brightness value is within the default error range value to determine a final grayscale value of over driving pixel.

LOD table adjustment method and LOD table adjustment system

The present application provides an AMOLED pixel driving circuit and a driving method thereof. The AMOLED pixel driving circuit employs a 6T1C pixel driving circuit with a specific driving timing to effectively compensate the threshold voltage to drive the thin film transistors and stabilize the current flowing through the OLED, to ensure uniform luminance of organic light emitting diodes and improve the display effect of the image. Meanwhile, the combination of the N-type thin film transistor and the P-type thin film transistor to reduce the number of the thin film transistors and the scan control signals to simplify the structure of the pixel driving circuit and increase the luminous area.

Amoled pixel driving circuit and driving method thereof

An OLED pixel driving circuit includes a first TFT, having a gate connected to a second node, and a source and a drain connected to a third node and a fourth node respectively; a second TFT, having a gate receiving a first signal, and a source and a drain connected to the second node and the fourth node respectively; a third TFT, having a gate receiving a second signal, and a source and a drain connected to a first node and the second node respectively; a fourth TFT, having a gate receiving a third signal, and a source and a drain connected to the fourth node and an anode of an OLED respectively; and a capacitor having two ends connected to the first node and the second node respectively. The third node is connected to a high voltage source and the first node is connected to a voltage input end.

OLED pixel driving circuit and driving method thereof

The invention provides a pixel driving circuit, repair method thereof, and a display device. The pixel driving circuit comprises: a first TFT, a second TFT, a third TFT, a fourth TFT, a fifth TFT, a capacitor, a first electroluminescent device, and a second electroluminescent device; by controlling the fourth and fifth TFTs to turn on and off alternatingly through the light-emitting control signal, the first and second electroluminescent devices emit light alternatingly so as to reduce operation duration of the first and second electroluminescent devices and improve the lifespan of the first and second electroluminescent devices, as well as to ensure the pixel emitting light normally when one of the first and second electroluminescent devices malfunctions by adjusting the voltage of the light-emitting control signal so that the remaining functioning electroluminescent device continues to operate.

Pixel driving circuit, repair method thereof and display device

The present invention provides an OLED pixel driving circuit and a pixel driving method. The OLED pixel driving circuit utilizes the 7T2C structure, and comprises a first N type thin film transistor (T), a second N type thin film transistor (T), a third N type thin film transistor (T), a fourth N type thin film transistor (T), a fifth P type thin film transistor (T), a sixth N type thin film transistor (T), a seventh P type thin film transistor (T), a first capacitor (C), a second capacitor (C) and an organic light emitting diode (D), and the first scan signal (Scan), the second scan signal (Scan), the third scan signal (Scan), the light emitting control signal (EM) and the data signal (Data) are combined with one another to correspond to a reset stage, a threshold voltage detection stage, a program stage and a light emitting stage one after another.

OLED pixel driving circuit and pixel driving method

The invention provides an AMOLED display device and driving method thereof. The AMOLED display device comprises: a driving circuit () and a display panel () connected to the driving circuit (); the display panel () comprising a plurality of sub-pixels arranged in an array form, and the sub-pixels further comprising red sub-pixels (R), green sub-pixels (G), blue sub-pixels (B), and white sub-pixels (W); the driving circuit () inputting a Gamma control signal (Gamma_change), and outputting a red Gamma voltage curve (Red_Gamma), a green Gamma voltage curve (Green_Gamma), a blue Gamma voltage curve (Blue_Gamma), and a white Gamma voltage curve (White_Gamma); based on different Gamma control signal (Gamma_change), the driving circuit () drives the display panel () with different sub-pixel arrangements to reduce manufacturing cost, and improve competitiveness.

AMOLED display device and driving method thereof

The invention provides an OLED pixel driving circuit and pixel driving method. The OLED pixel driving circuit adopts a 6T2C structure, comprising: first to sixth TFTs (T, T, T, T, T, T), a first capacitor (C), a second capacitor (c), and an OLED (D); the (n&#x2212;1)th first scan signal (Scan(&#x2212;1)), n-th first scan signal (Scan()), n-th second scan signal (Scan()), n-th third scan signal (Scan()), n-th fourth scan signal (Scan()) and the data signal (Data) are combined w to correspond to a reset stage, a threshold voltage storage stage, a data writing stage, a capacitor cascading stage, and a display lighting stage respectively so that the current flowing through the OLED is independent of the threshold voltage of driving TFT.

The invention provides an AMOLED pixel driver circuit and pixel driving method. The AMOLED pixel driver circuit has a 6T1C structure, comprising a first thin film transistor (TFT) (T), a second TFT (T) forming mirror relation with the first TFT (T), a third TFT (T), a fourth TFT (T), a fifth TFT (T), a sixth TFT (T), a capacitor (C), and an organic light-emitting diode (OLED) (D), and receiving a first scan signal (Scan), a second scan signal (Scan), a third scan signal (Scan), a light-emitting signal (EM), a data signal (Data), and a reference voltage (Vref). The circuit can effectively compensate the threshold voltage of the driving TFT to solve the problem of unstable current flowing through the OLED caused by the threshold voltage drift to ensure uniform luminance of the OLED and improve the display quality.

AMOLED pixel driver circuit and pixel driving method

An method of driving an AMOLED is provided, including: dividing grayscale values of each pixel of each frame into N portions, so as to obtain N PWM driving signals of an organic light emitting diode; dividing the driving time of each frame of the organic light emitting diode into N sub-driving times, wherein one of the sub-driving times of each frame corresponds to one of the PWM driving signals; and transmitting all of the PWM driving signals of each frame to the organic light emitting diode at the corresponding sub-driving time, so as to drive and display an image.

Method for driving AMOLED

The present invention provides an AMOLED pixel driving circuit and an AMOLED pixel driving method. The AMOLED pixel driving circuit utilizes the 6T1C structure pixel driving circuit with a specific drive timing and can effectively compensate the threshold voltage of the drive thin film transistor and can stabilize the current flowing through the organic light emitting diode to ensure the uniform brightness of the organic light emitting diode and improve the display effect of the pictures. The organic light emitting diode can emit light only in the light emitting stage to avoid the unnecessary irradiance of the organic light emitting diode to reduce the electrical power consumption.

AMOLED pixel driving circuit and AMOLED pixel driving method

The invention provides a Mura compensation method for display panel, which extracts the luminance information of a grayscale b other than the lowest grayscale from the inputted image through an image console, generates a Mura value index table for 0 to the lowest grayscale; uses linearly interpolation calculate the Mura values for the remaining grayscales; determines the inputted data signal; for low grayscale image smaller than the lowest grayscale, searches the index table for Mura value to perform Mura compensation to make the compensated grayscale larger than the lowest grayscale; for dynamic image, uses linear interpolation to calculate the Mura value corresponding to the inputted data signal; and for static image, uses non-linear interpolation to calculate the Mura value corresponding to the inputted data signal. As such, the Mura compensation effect is improved for static and low grayscale images; moreover, the memory speed requirement is reduced.

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Shenzhen, China

Yichien Wen