Wuhan China Star Optoelectronics Technology Co., Ltd.

Shenzhen China Star Optoelectronics Technology Co., Ltd.

Other

Qingcheng Zuo

Zhenzhou Xing

Gonghua Zou

Xiaoling Yuan

Xiaoping Tan

Man Li

Chao Liang

Chang Cao

Chun-hung Huang

Xingling Guo

Jianxing Xie

A liquid crystal display device and a backlight control method thereof are provided. In response to that average pixel brightness of image data is less than a threshold, a first backlight driving signal is generated based on gray level information of the image data and a second backlight driving signal is generated based on saturation information of the image data. A convolution operation is performed on the first and the second backlight driving signal to output a backlight driving signal. The backlight driving signal is modulated and provided to a backlight module for producing backlight to a liquid crystal panel. Power consumption of the backlight module is lowered and meanwhile a dark effect caused in displaying images of a pure color is improved.

Liquid crystal display device and backlight control method thereof

The present disclosure provides a pixel substrate, a liquid crystal display panel and liquid crystal display device, the pixel substrate includes liquid crystal pixels, TFT, source lines, grid lines, common electrodes, and corresponding storage capacitances, the liquid crystal pixels include a plurality of pixel units, each of the source lines is connected to the source/drain electrode of at least two columns of the pixel units, and the storage capacitance corresponding to one column of the pixel units is larger than the storage capacitance corresponding to any other column of the pixel units. The present disclosure reduces the effect of the feed-through voltage on the display effect while reducing the power consumption.

Liquid crystal display panel having pixel units with difference storage capacitance

The disclosure provides an OLED display device and a driving method thereof. The OLED display device includes an OLED display module, a driving module, and a system module, and the driving module includes a display driving module and a human eye recognition module; the system module generates display data based on an image, the display driving module drives the OLED display module to display according to the data, and the human eye recognition module senses a human eye's focus area and gives feedback information to the system module; when the human eye recognition module senses the human eye's focus area, information thereof is fed back to the system module, the system module determines the focus and non-focus areas according to the information, then the display driving module turns off all or part of predetermined sub-pixels in the non-focus area. The disclosure can prolong the lifetime of the OLED display device.

OLED display device and driving method thereof

A pixel driving circuit is used to drive a pixel structure having a plurality of pixel units. The pixel driving circuit includes data lines; selecting circuits having a data input terminal connected to one of the data lines, a first output terminal connected to a red subpixel unit of a pixel unit, a second output terminal connected to a green subpixel unit of the pixel unit, and a third output terminal connected to a blue subpixel unit of the pixel unit; scanning lines; voltage-variation circuits having an input terminal to receive the scanning signal, an output terminal connected to one of scanning lines. Each of the voltage-variation circuits is selectively operable in a voltage-regulated state or a conduct state.

Pixel driving circuit and liquid crystal display circuit with the same

A touch display panel includes touch detection electrodes and fingerprint recognition electrodes that share a common electrode layer. The pixel electrodes function as a drive pixel layer to induce capacitive coupling with respect to the fingerprint recognition electrodes, based on which operations of displaying, touch detection, and fingerprint recognition are carried out in a time sharing manner. The touch display panel requires no integration of separately made fingerprint recognition device and a touch display panel, and fingerprint detection can be realized with an existing layered structure of the touch display panel to thereby effectively save the manufacturing cost of the touch display device and achieve an effect of integrating a fingerprint recognition device and a touch display panel. A touch display device that includes the touch display panel is also provided.

Touch display panel having fingerprint recognition device integrated therewith and touch display device including same

The present disclosure provides a touch sensing method, including receiving a touch sensing signal of a touch sensing panel; determining a type of a touch sensing operation according to the touch sensing signal and generating a determining result; determining a position of a non-fingerprint touch sensing operation according to a position generated using the touch sensing signal when the determining result indicates that the type of the touch sensing operation is not a fingerprint touch sensing operation; and suspending processing of the touch sensing signal generated of a portion of the touch sensing panel corresponding to the position of the non-fingerprint touch sensing operation.

Touch sensing method and apparatus of same

A driving device and a liquid crystal display device are disclosed. In the driving device, a charging efficiency difference between a positive polarity voltage and a negative polarity voltage on a pixel can be compensated through increasing a duration of a gate driving signal, shortening a time period during which the positive polarity voltage is provided to a source line, and prolonging a time period during which the negative polarity voltage is provided to the source line. In this manner, the technical problem of non-uniform brightness of an image displayed in a traditional liquid crystal display panel and unsatisfactory display effect thereof can be solved.

Driving device and liquid crystal display device

The present disclosure provides a device for reducing power consumption of a liquid crystal display, which includes: a screen area acquisition module for acquiring a first screen area being viewed and a second screen area not being viewed while a viewer watches a screen of the liquid crystal display; and a dynamic backlight control module for performing a dynamic backlight control adjustment on the second screen area. The present disclosure also discloses a method for reducing power consumption of the power consumption reduction device and a liquid crystal display having device. The present disclosure realizes intelligently partitioning dynamic backlight control to the screen of the liquid crystal display and also reduces the power consumption.

Device and method for reducing power consumption of liquid crystal display, and liquid crystal display

A driving circuit for a display panel is disclosed. The driving circuit includes at least a driving signal line connected to a display driving signal transmission unit delivering display driving signal produced by the display driving signal transmission unit to sub-pixels of the display panel through the driving signal line; and a number of data signal lines connected to a display data provision unit delivering display data signal produced by the display data provision unit to the sub-pixels. For each subset of the sub-pixels that are of a same component color, at least two data signal lines, starting from different points of time, deliver display data signal to the subset of sub-pixels that are of the same component color. The driving circuit effectively resolves glitches to input signal resulted from heavy transient load to the input signal.

Display panel and driving circuit thereof

Embodiments provide a thin film transistor liquid crystal display panel comprising: data lines for transmitting data signals; scan lines being crossly arranged with the data lines to define pixel regions, pixel electrodes being disposed in the pixel regions, and a first and a second feed through voltage being voltage drops generated on the pixel electrodes, respectively; common electrodes comprising a first common electrode and a second common electrode, a first common voltage being a voltage on the first common electrode, a second common voltage being a voltage on the second common electrode, the first common electrode being arranged above the pixel electrode on which the first feed through voltage is generated for compensating the voltage reduction caused by the first feed through voltage, and the second common electrode being arranged above the pixel electrode on which the second feed through voltage is generated for compensating the voltage reduction caused by the second feed through voltage.

Thin film transistor liquid crystal display panel

A signal switching device and a test system are disclosed. A printed wire which is connected with a test circuit can be selected flexibly according to actual situation, and a sufficient distance between adjacent tested printed wires/test printed wires which are used for transmitting a differential signal can be maintained, such that signal interference between the printed wires would not be easily generated. Signals can be effectively separated from each other, and thus the technical problem that signal interference would easily be generated between adjacent tested printed wires/test printed wires which are used for transmitting a differential signal can be solved.

Signal switching device and test system

This disclosure provides a liquid crystal display panel where a display area is divided into a plurality of areas to arrange driver chip, fan-out line, multiplexer line, detection circuit and protection circuit. A detection circuit and a protection circuit are disposed in a same area, making the protection circuit share thin-film transistors with the detection circuit.

Liquid crystal display panel and liquid crystal display device

There provides a liquid crystal display apparatus and a backlight control method thereof. The liquid crystal display apparatus includes an image data acquisition part, a liquid crystal panel, a panel driving unit, a backlight module and a backlight driving unit; wherein the panel driving unit drives the liquid crystal panel and generates a backlight driving signal; the backlight driving unit includes a PWM module and a PFM module to modulate the backlight driving signal, thereby forming driving powers supplied to the backlight module; the liquid crystal display apparatus further includes a backlight modulation selection unit used to detect and calculate an average pixel brightness value A of the image data, and a reference pixel brightness value Ais further set therein; when A&#x2265;A, the backlight modulation selection unit selects to enable the PWM module; and when A&#x3c;A, the backlight modulation selection unit selects to enable the PFM module.

Liquid crystal display apparatus and backlight control method thereof

The present application discloses a mobile terminal, and its touch display device, and a touch button, the touch button including a touch sensor, a first switch group and a second switch group; each switch group including a plurality of switches, terminals of the switches of the first switch group are respectively connected to the touch panel, the other terminals are connected to the touch sensor respectively; terminals of the switches of the second switch group are respectively connected to the touch sensor, the other terminals are connected to the liquid crystal module; the touch sensor is overlapped with the touch button area of the touch display device. By adding the switches and the switching control signal of the touch button performing multiplexing to the Cell test PAD, and use the cell test PAD as the sensor of the extension region, and further integrate the additional Touch function into the Cell.

Mobile terminal, touch display device and touch button

The present invention provides a display driving circuit and a liquid crystal display panel with adding a first AND gate (AND), a second AND gate (AND) and a third AND gate (AND). Two input ends of each of the three gates receives a branch control signal and a conditioning signal (BURR), and the conditioning signal (BURR) first performs several high and low voltage level conversions and then maintains the high voltage level, respectively in the high voltage level durations of the respective branch control signals to make the signal outputted by the output end of the first AND gate, the signal outputted by the output end of the second AND gate and the signal outputted by the output end of the third AND gate first perform several high and low voltage level conversions and then maintain the high voltage level.

Growing community of inventors

Guangdong, China

Qingcheng Zuo