Shenzhen China Star Optoelectronics Technology Co., Ltd.

Other

Liangchan Liao

Poshen Lin

Dongsheng Guo

Yu Wu

Xiang Yang

Chengming He

Yinhung Chen

Yong Zhang

Yuyeh Chen

Nianmao Wang

Chihsien Li

A liquid crystal display (LCD) device control system or an LCD device includes a control circuit board includes a sequence control circuit, a panel includes a source drive circuit, and a scalar circuit board includes a first voltage reduction module. The sequence control circuit is configured with a main power end and an auxiliary power end. The main power end of the sequence control circuit and the source drive circuit are coupled to the first voltage reduction module to supply power.

LCD device control system and LCD device

A liquid crystal display for displaying either a flat image or a stereoscopic image, comprising: a panel; and a backlight unit for providing a light source to the panel. The backlight unit comprising: a switch circuit and an oscillator. One end of the switch circuit is electrically connected with a first resistor, and another end of the switch circuit is electrically connected with a second resistor. When the switch circuit is turned on, the first resistor is connected with the second resistor in parallel. The oscillator is electrically connected with the first resistor and the switch circuit. When the switch circuit is turned off, the oscillator outputs a first frequency, and when the switch circuit is turned on, the oscillator outputs a second frequency.

Backlight unit with changing oscillation frequency in stereoscopic mode and liquid crystal display using the same

The present invention discloses a tape substrate for chip on film structure of a liquid crystal panel. The tape substrate is provided with plural package units of chip on film structures arranged along its longitudinal direction, and the package unit has a driver chip, input leads and output leads. The longitudinal direction of the driver chip is parallel to the longitudinal direction of the tape substrate, and the input leads and the output leads are located at the two opposite sides of the driver chip. Each package unit is set up with a short side and a long side, and the input leads are formed at the short side, while the output leads are formed at the long side. In the package units adjacent to each other, the short side of one package unit joins the long side of a next package unit. This invention further discloses a liquid crystal panel having the tape substrate.

Tape substrate for chip on film structure of liquid crystal panel

A system and method for driving a three-dimensional liquid crystal display (3D LCD) device uses a target frequency, where the target frequency is double of a monocular frequency of an input picture of the 3D LCD device, and the monocular frequency is in the range of 62 Hz-118 Hz. The system and method converts a frame rate of the input picture of the 3D LCD device into (62 Hz-118 Hz)&#xd7;2, and monocular frequency through the 3D glasses is in the range of 62 Hz-118 Hz.

Driving system of three-dimensional LCD device, method for driving the three-dimensional LCD device, and three-dimensional glasses

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.

Driving circuit of LCD panel, LCD panel, and LCD device

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.

Tape substrate with chip on film structure for liquid crystal display panel

An LCD device capable of changing the scan order and a driving method thereof are disclosed. The LCD device includes a plurality of pixel units which are arranged in an array of rows, first scan lines, second scan lines, and switch units. The pixel units of each row are divided into first pixel units and second pixel units. The switch units are respectively electrically coupled to one end of each first scan line and to one end of each second scan line for controlling conduction states of the first scan lines and the second scan lines, thereby controlling an order of updating the image signals for the first pixel units and the second pixel units. Thus, the scan lines are driven in the order according to whichever total sum of differences between gray values thereof is smaller, so that the power consumption of data chips is decreased.

LCD device capable of changing the scan order and driving method thereof

The present invention provides a liquid crystal display and pixel units thereof. The pixel unit has a plurality of subpixel units, and each of the subpixel units is a rectangular block, and the rectangular block is divided into a triangular bright-partition and a triangular dark-partition along an inclined line, and the bright-partition of each subpixel unit corresponds to the dark-partitions of adjacent subpixel units, so as to reduce jagged phenomenon of lines in screen images with the configuration of the pixel unit, and thereby enhance image quality of the liquid crystal display.

Liquid crystal display and pixel units thereof

A code checking method for a memory of a printed circuit board is disclosed, and is used to firstly add a check code to a data end of codes, after the codes is written in a memory, then use a timing controller to calculate a checksum of the data of the part of the primary codes and further compare the calculated checksum with the check code, and then output to a probe via a testing pin to display the result of comparison, so as to accomplish an object of checking if the written codes are correct. Thus, work efficiency of checking the codes written in the memory is enhanced.

Code checking method for a memory of a printed circuit board

A temperature control method for light emitting diode (LED) is disclosed, and the method comprises the following steps: acquiring the present temperature of the LED during the light emission of the LED; obtaining a driving electric current corresponding to the present temperature based on the present temperature of the LED; and driving the LED based on the driving electric current. This invention further discloses a temperature control device for the LED and a liquid crystal display.

Temperature control method and apparatus for light emitting diode and liquid crystal display

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.

LED backlight driving circuit, backlight module, and LCD device

A liquid crystal display (LCD) and circuit architecture thereof are proposed. Power signal lines, data signal lines, and control signal lines are mounted on a printed circuit board (PCB) and a thin film substrate. The thin film substrate is connected to a LCD panel by using a COF bonding. These circuits can be transferred onto a conductive glass of the panel and subsequently onto source driver chips of the thin film substrate of the COF. Therefore, a position which needs the least time for power signal lines, data signal lines, and control signal lines to transmit to all of the circuits of the panel on the PCB can be calculated in order to achieve the best design.

LCD and circuit architecture thereof

A liquid crystal display includes a plurality of pixel groups. At least a pixel group is surrounded by a first scan line, a second scan line, a first data line, and a second data line. Each pixel group includes a first transistor, a first subpixel, a second transistor, a second subpixel, a third transistor, a third subpixel, a fourth transistor, and a fourth subpixel. The first transistor is electrically connected with the first scan line and the first data line. The second transistor is electrically connected with the first scan line and the second data line. The third transistor is electrically connected with the second scan line and the first data line. The fourth transistor is electrically connected with the second scan line and the second data line.

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Shenzhen, China

Liangchan Liao