Abstract: The disclosure provides a chip on film (COF) and a display device. The COF includes a substrate, a driver chip, and a heat dissipation component. A plurality of signal terminals and a plurality of heat dissipation terminals are formed on the substrate. The driver chip includes a plurality of signal pins and a plurality of heat dissipation pins. The signal pins are connected to the signal terminals, and the heat dissipation pins are connected to the heat dissipation terminals. By disposing the heat dissipation pins on the driver chip, heat generated from the driver chip may be dissipated. Therefore, a large heat dissipation area of the driver chip may be realized, which solves a problem that temperatures of conventional COFs are too high.

Abstract: The present application provides a liquid crystal display comprising a display panel, a backlight module, and a plurality of connecting screws. Wherein, the display panel and the backlight module have a plurality of correspondingly arranged threaded holes, and the plurality of connecting screws cooperate with the plurality of threaded holes to fix the display panel and the backlight module together.

Abstract: The present application provides a liquid crystal display comprising a display panel, a backlight module, and a plurality of connecting screws. Wherein, the display panel and the backlight module have a plurality of correspondingly arranged threaded holes, and the plurality of connecting screws cooperate with the plurality of threaded holes to fix the display panel and the backlight module together.

Abstract: The disclosure provides a method of eliminating ripples caused by LVDS spread spectrum, steps include obtaining a frame rate R, calculating a time t for displaying a frame of image according to the frame rate, according to the time t for displaying a frame of image, setting FMOD to achieve t=k×(1/FMOD), where FMOD represents a frequency of spread spectrum modulating the LVDS signal, k is a positive integer, spread spectrum modulating the LVDS signal with FMOD to generate and send a LVDS spread spectrum signal.

Abstract: Provided are a liquid crystal panel drive circuit and a liquid crystal display device. The liquid crystal panel drive circuit comprises a first signal transmission board, a second signal transmission board, a Gamma voltage generation module and N data drive chip, and the first signal transmission board and the second signal transmission board are located at the same side of the liquid crystal panel and are separately located with the liquid crystal panel respectively, and the Gamma voltage generation module is located on the first signal transmission board employed to generate an original Gamma voltage signal, and the first data drive chip to the (N-M)th data drive chip are separately located between the first signal transmission board and the liquid crystal panel, and the (N-M+1)th data drive chip to the Nth data drive chip are separately located between the second signal transmission board and the liquid crystal panel.

Abstract: The present invention provides a gate driver and liquid crystal display device. The gate driver, for driving scan lines of liquid crystal display device, includes: an input buffer, for receiving clock signal, first frame start pulse signal and second frame start pulse signal; shift register, including n+2 triggers, connected serially from the first trigger to the n+1st trigger, a clock signal input terminal of the n+2nd trigger being connected to the clock signal transmission line, wherein n being a natural number, when the first frame start pulse signal starting, the shift register shifting vertical synchronization signal and outputting n+1 outputs of shift registers based on the clock signal; a voltage level shifter, for shifting the output of the shift register to predefined voltage level and outputting shifted result serially; and an output buffer, for applying output of voltage level shifter to scan lines.

Abstract: The present disclosure discloses a driving circuit of a liquid crystal display (LCD) panel, an LCD panel, and an LCD device. The driving circuit of the LCD panel includes a compensation unit coupled with a scan line of the LCD panel and outputting N different driving voltages to different gate driver chips on a side of the panel. N is equal to a number of the gate driver chips arranged on the side of the LCD panel, as distance from the driving source of the driving voltages to the gate driver chip increases, absolute value of the driving voltage outputted by the compensation unit increases.

Abstract: A detecting method of abnormality of a differential signal receiving terminal of a liquid crystal displaying module, including: inputting high level signals to LVDS0+, LVDS0?, LVDS1+, LVDS? in order, in which only one high level signal is inputted to one of the differential signal lines and the other differential signal lines are kept in high impedance states simultaneously; and receiving feedback signals from all the differential signal lines and determining whether the differential signal lines of detecting units are abnormal or not according to the received feedback signals. The abnormality of the differential signal lines includes terminal resistive opens of the differential signal lines, a short circuit between two adjacent groups of differential signal lines, and short circuits of the differential signal lines to ground or to a power supply caused by abnormal power supplying sequence.

Abstract: The present invention provides a chamfered circuit and a control method thereof. The chamfered circuit comprises a direct-current voltage input terminal, a chamfered voltage output terminal, a first switching circuit, a second switching circuit, a switching circuit, a first discharge circuit and a second discharge circuit, wherein, the switching circuit selectively connects the second switching circuit to the first discharge circuit or the second discharge circuit under the control of a third timing signal in order to form a first chamfered voltage with a first discharge slope or a second chamfered voltage with a second discharge slope at the chamfered voltage output terminal. The first discharge slop is different from the second discharge slope. The present invention can eliminate the uneven brightness phenomenon on the vertical direction of the display screen, improving the display quality of the liquid crystal display device.

Abstract: The present invention provides a gate driver and liquid crystal display device. The gate driver, for driving scan lines of liquid crystal display device, includes: an input buffer, for receiving clock signal, first frame start pulse signal and second frame start pulse signal; shift register, including n+2 triggers, connected serially from the first trigger to the n+1st trigger, a clock signal input terminal of the n+2nd trigger being connected to the clock signal transmission line, wherein n being a natural number, when the first frame start pulse signal starting, the shift register shifting vertical synchronization signal and outputting n+1 outputs of shift registers based on the clock signal; a voltage level shifter, for shifting the output of the shift register to predefined voltage level and outputting shifted result serially; and an output buffer, for applying output of voltage level shifter to scan lines.

Abstract: A programmable gamma circuit of liquid crystal display driving system, comprises: a first digital-to-analog converter to a n-th digital-to-analog converter, which receive a data used to generate a reference voltage of a pixel grayscale from a timing controller of the liquid crystal display driving system and convert the data to an analog signal; a first operational amplifier to a n-th operational amplifier, each operational amplifier being connected to a corresponding digital-to-analog converter, the amplified analog signal being the reference voltage of the pixel grayscale ; a first resistor to a fifth resistor, which are connected in series with each other, the operating voltage obtained by a voltage converter of the liquid crystal display driving system converting the reference voltage being input to one end of the first resistor, and one end of the fifth resistor being grounded.

Abstract: A control circuit includes a power supply, a control IC, a liquid crystal panel, a driving integrated chip arranged between the control IC and the liquid crystal panel, and a number of voltage adjusting sub-circuits. The driving integrated chip includes a plurality of output ports for outputting a plurality of driving voltages respectively. Each voltage adjusting sub-circuit is arranged between the corresponding output port of the driving integrated chip and the liquid crystal panel for adjusting an initial value the voltage outputted from the corresponding output port before the driving voltage is transferred to the liquid crystal panel. With the voltage adjusting sub-circuits, the driving voltages received by the liquid crystal panel have the same value to avoid the color deviation of the images displayed in the liquid crystal panel. This improves the display effect of the liquid crystal panel under without increasing the layout area.

Abstract: The present disclosure discloses a driving circuit of a liquid crystal display (LCD) panel, an LCD panel, and an LCD device. The driving circuit of the LCD panel includes a compensation unit coupled with a scan line of the LCD panel and outputting N different driving voltages to different gate driver chips on a side of the panel. N is equal to a number of the gate driver chips arranged on the side of the LCD panel, as distance from the driving source of the driving voltages to the gate driver chip increases, absolute value of the driving voltage outputted by the compensation unit increases.

Abstract: A driving circuit for a multi-subpixel charge sharing type LCD panel includes a plurality of scan lines directly driven by gate driver chips. The driving circuit further includes a compensating line, and a level conversion module coupled to the compensating line. The level conversion module outputs a control signal to drive the compensating line after the level conversion module ends scanning of a last scan line and before the level conversion module begins scanning of next frame.

Abstract: A detecting method of abnormality of a differential signal receiving terminal of a liquid crystal displaying module, including: inputting high level signals to LVDS0+, LVDS0?, LVDS1+, LVDS? in order, in which only one high level signal is inputted to one of the differential signal lines and the other differential signal lines are kept in high impedance states simultaneously; and receiving feedback signals from all the differential signal lines and determining whether the differential signal lines of detecting units are abnormal or not according to the received feedback signals. The abnormality of the differential signal lines includes terminal resistive opens of the differential signal lines, a short circuit between two adjacent groups of differential signal lines, and short circuits of the differential signal lines to ground or to a power supply caused by abnormal power supplying sequence.

Abstract: The present invention discloses a liquid crystal display (LCD) and a broken line repairing method. The LCD comprises multiple data lines, a data driven chip connected to the data lines, and a sequence control circuit connected to the data driven chip. The LCD is provided with at least one broken data line; the broken data line is provided with connection points on the end away from the data driven chip; and each connection point is connected and conducted to a vacant channel of the data driven chip and simultaneously transmits data information of the broken data line to the corresponding vacant channel to be output. The method can drive the data lines on both sides of the breakpoint and does not require an additional OP buffer. A repairing line need not to be reserved on PCBA; and one broken line only has one welding spot, which decreases the production procedure, increases the yield rate of TFT-LCD, and reduces the material and production cost.

Abstract: A liquid crystal display includes a liquid crystal panel, 2m scan lines, n/2 data lines, a gate driver for applying scanning signals to the scan lines respectively, and a source driver for applying data signals to the data lines respectively. The scan lines are disposed on the liquid crystal panel and extend along a long-axis direction of substrate respectively. The data lines are disposed on the liquid crystal panel and extend along a short-axis direction of substrate respectively. The scan lines and data lines define a sub-pixels area of n rows*m columns, a scan line 2k?1 and a scan line 2k are alternatively connected to all sub-pixels in a column k, and a data line g electrically connects sub-pixels in columns 2g?1 with sub-pixels in column 2g, wherein 1?k?m, 1?g?n/2, m, k, n, g are all natural numbers, and n is a multiple of two.

Abstract: A control circuit includes a power supply, a control IC, a liquid crystal panel, a driving integrated chip arranged between the control IC and the liquid crystal panel, and a number of voltage adjusting sub-circuits. The driving integrated chip includes a plurality of output ports for outputting a plurality of driving voltages respectively. Each voltage adjusting sub-circuit is arranged between the corresponding output port of the driving integrated chip and the liquid crystal panel for adjusting an initial value the voltage outputted from the corresponding output port before the driving voltage is transferred to the liquid crystal panel. With the voltage adjusting sub-circuits, the driving voltages received by the liquid crystal panel have the same value to avoid the color deviation of the images displayed in the liquid crystal panel. This improves the display effect of the liquid crystal panel under without increasing the layout area.

Abstract: The present invention discloses a gamma buffer output compensation circuit, a drive circuit and a resistance setting method thereof. The gamma buffer output compensation circuit comprises a set of variable compensating resistor modules which are respectively connected to each output terminal of the gamma buffer and have regulable resistance. The present invention uses the method of setting variable compensating resistor modules with regulable resistance in front of each output terminal of the gamma buffer to replace the existing compensating resistors with fixed resistance. The resistance of the compensating resistors in front of each output terminal can be regulated through external operation so that the same compensation circuit can be applied to different types of machines.

Abstract: The present invention provides an LCD device and a driving method thereof. The LCD device includes data lines, a source driver, pixel units, and a switching circuit connected between the source driver and the data lines. The source driver outputs gray level voltages in two adjacent data lines by using a dot inversion method. The switching circuit includes multiple first switches, multiple second switches, and multiple third switches. Before the gray level voltage is output in the data lines, the voltage level applied on the data lines approaches to the magnitude of the upcoming gray level voltage in advance. The power consumption of the LCD device of the present invention is lower.