Abstract:
The present invention provides a tape substrate with COF structures for a liquid crystal display panel. A plurality of package units with the COF structures are arranged along a longitudinal direction of the tape substrate. Each of the package units includes input leads and output leads. In each of the package units, along the longitudinal direction of the tape substrate, the input leads and the output leads are disposed at both sides of the tape substrate, respectively. The present invention further provides the liquid crystal display panel using the tape substrate.
Abstract:
Disclosed are an adjustment method of an LCD (Liquid Crystal Display) overdrive voltage and the device. The adjustment method comprises steps below: locating a transistor at a position capable of sensing a temperature of an LCD panel; providing a constant current source to a drain of the transistor and a conducting voltage to the transistor, and a voltage difference between a source and a gate changing according to a temperature changing of the LCD panel; receiving voltages of the source and the gate of the transistor to calculate a voltage difference therebetween and outputting an amplified value of the voltage difference by an error amplifier; receiving the amplified value of the voltage difference and outputting corresponding binary signals by an analog to digital converter; providing a selector storing a plurality of overdrive voltages for selecting different overdrive voltages according to the different binary signals to adjust the LCD overdrive voltage.
Abstract:
The present invention provides a tape substrate with COF structures for a liquid crystal display panel. A plurality of package units with the COF structures are arranged along a longitudinal direction of the tape substrate. Each of the package units includes input leads and output leads. In each of the package units, along the longitudinal direction of the tape substrate, the input leads and the output leads are disposed at both sides of the tape substrate, respectively. The present invention further provides the liquid crystal display panel using the tape substrate.
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 light emitting diode (LED) backlight driving circuit includes LED lightbar(s) and a control module; the control module includes a dimming controllable switch. The LED lightbars are connected with the dimming controllable switch in series. Two ends of the dimming controllable switch are connected with a varistor in parallel. Because two ends of the dimming controllable switch are connected with a varistor in parallel, when the dimming controllable switch is switched off, a current of the branch circuit is suddenly reduced, the voltage withstood by the LED lightbars is greatly reduced, and the voltage on two ends of the dimming controllable switch is increased. Then, under action of high voltage, resistance of the varistors connected in parallel is reduced, and the current of a new branch circuit formed by the LED lightbars and the varistor is also increased. Thus, the voltage withstood by the LED lightbars is increased again and the voltage on two ends of the dimming controllable switch is reduced.
Abstract:
The present invention discloses a liquid crystal panel driving circuit and a liquid crystal display (LCD) device using the same, multiple scan chips and multiple discharge resistors which are corresponding to all the scan chips one-to-one, wherein each said discharge resistor is used for loading the scan drive and the scan line of the corresponding scan chip. Because the loading resistor group of the clipper circuit is divided into multiple discharge resistors which are matched with all the scan chips, the discharge energy will be reduced as long as each discharge resistor is responsible for the loading of the corresponding scan chip, and the problem of local overheating will not be generated. In addition, the discharge resistors can be distributed into different positions; the arrangement of the driving circuit can be freely selected; the heat is uniformly dissipated by distributing the discharge resistors, and local overheating will be avoided and not affect the performance of the circuit.
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. Therefore, the gamma buffer output compensation circuit can be directly developed in advance without regard to the difference of different types of machines, and the resistance of suitable compensating resistors can be regulated in later period. Thus, the generality of gamma buffers is increased, and the development cycle of machines is reduced.
Abstract:
The present invention provides a liquid crystal display and pixel displaying structure thereof. The pixel displaying structure has a plurality of sub-pixel units. The sub-pixel units are arranged on a two-dimensional matrix arrangement and each of the sub-pixel units is divided into two rectangular partitions, and each of the partitions performs a bright mode or a dark mode, and then the bright mode and the dark mode are changed over to each other between consecutive frames of screen while two transversely-adjacent or longitudinally-adjacent partitions are a combination of a bright-mode partition and a dark-mode partition. Therefore, ladder-like bright-dark boundary line appearing during displaying oblique lines can be reduced based on the visual mixture of brightness interchanging.
Abstract:
Disclosed are a data line repair apparatus and a method thereof, employed in a LCD panel having a repair line, and a repair operational amplifier coupled to the LCD panel including a first input end, a second input end and an output end, and the output end and the second input end are both coupled to a data line of the LCD panel and the repair line. The data line repair apparatus comprises a receiving module, receiving image data of a present frame from the data line; an acquiring module, acquiring output data corresponding to the image data of the present frame and image data of a former frame from preserved corresponding relationships of the aforesaid data; and an outputting module, outputting a voltage corresponding to the output data acquired by the acquiring module to the first input end in a scheduled period.
Abstract:
Disclosed are an adjustment method of an LCD (Liquid Crystal Display) overdrive voltage and the device. The adjustment method comprises steps below: locating a transistor at a position capable of sensing a temperature of an LCD panel; providing a constant current source to a drain of the transistor and a conducting voltage to the transistor, and a voltage difference between a source and a gate changing according to a temperature changing of the LCD panel; receiving voltages of the source and the gate of the transistor to calculate a voltage difference therebetween and outputting an amplified value of the voltage difference by an error amplifier; receiving the amplified value of the voltage difference and outputting corresponding binary signals by an analog to digital converter; providing a selector storing a plurality of overdrive voltages for selecting different overdrive voltages according to the different binary signals to adjust the LCD overdrive voltage.