Wuhan China Star Optoelectronics Technology Co., Ltd.

Shenzhen China Star Optoelectronics Technology Co., Ltd.

Yucheng Lu

Xiang Yang

Xiaoping Tan

Gonghua Zou

Zhenzhou Xing

Feilin Ji

Chun-hung Huang

Chunpeng Guo

Chun-Hung Huang

The present invention discloses a display panel, a chip and a flexible circuit board. The display panel includes a panel body and at least two signal transmission circuits. The signal transmission circuit includes a line input terminal used for binding to a flexible circuit board, which is disposed at the peripheral area, a signal transmission line, and a line output terminal used for binding to a chip, which is disposed at the peripheral area. At least two of the line output terminals are arranged in a two-dimensional array. The present invention can reduce the impedance of a part of the signal transmission line.

Display panel, chip, and flexible circuit board

A flexible printed circuit board, a display panel, and a display device are disclosed. The flexible printed circuit board includes a first input portion, and at least a first output portion disposed on the first input portion. The first input portion and the first output portion are disposed at different sides of the flexible printed circuited board. The first output portion includes a plurality of first output terminals, and each of the first output terminals of the first output portion is spaced apart at a different distance from a top end of the first output portion.

Flexible printed circuit board, display panel, and display device

Provided is a driving method of a liquid crystal display panel, comprising: inputting an activation voltage to the scan lines from a first direction in a first duration, and inputting a pixel voltage of a first polarity to the data lines to charge the pixel capacitors; inputting an activation voltage to the scan lines from the first direction in a second duration, and inputting a pixel voltage of a second polarity to the data lines to charge the pixel capacitors; inputting an activation voltage to the scan lines from a second direction in a third duration, and inputting the pixel voltage of the first polarity to the data lines to charge the pixel capacitors; inputting an activation voltage to the scan lines from the second direction in a fourth duration, and inputting the pixel voltage of the second polarity to the data lines to charge the pixel capacitors.

Driving method of liquid crystal display panel

The touch display panel drive circuit provided by the present invention comprises a data line drive unit, a plurality of gate lines and a plurality of data lines, and a junction of two adjacent gate lines and two adjacent data lines forms a pixel region, and a pixel switch is located inside the pixel region; the touch display panel drive circuit further comprises a data line switch between the data line and the data line drive unit; as the data line drive unit does not output the data signal, an output of the data line switch is a high-impedance state, and the data line drive unit is disconnected with the pixel switch. The present invention can prevent the error reading phenomenon generated by the transistor leakage, and can enhance the display brightness and the stability of the display image, and promote the display effect of the touch display panel.

Touch display panel and drive circuit, electronic apparatus thereof

A driving device for liquid crystal panel comprising: a scanning driver for applying a scanning voltage to pixels arranged as a matrix row by row; and a data driver for receiving an image data and a polarity inversion signal, obtaining original data voltages according to the image data, determining if amplifying the original data voltages along a scanning direction according to the polarity inversion signal, and providing the original data voltages or data voltage after being amplified to pixels. A driving method is also disclosed. When polarity inversion signal is inverted to a positive polarity from a negative polarity, the data voltages applied on the data line are gradually increased along a scanning direction. Accordingly, when the polarity inversion signal is inverted to a negative polarity from a positive polarity, the pixel which leaks current seriously is charged with a larger amount of charges, uneven display brightness is obviously decreased.

Driving device for liquid crystal panel and driving method for the same for determining if amplifying original data voltages in a scanning direction

A driving circuit for touch screen, a touch screen, and an electronic terminal are disclosure. The driving circuit for touch screen comprises: a control circuit, used for generating and outputting a scanning signal and a data selection signal according to a position of an electrode to be driven; and a data selection circuit, an input end thereof being connected with said control circuit, output ends thereof each being connected with a corresponding scanning end of the touch screen, wherein the data selection circuit is configured to turn on or turn off a connection between an input end thereof and an output end corresponding to the electrode to be driven according to said data selection signal. In the driving circuit, the influence on the following detection of the touch points generated by the attenuation of the scanning signal during transmission process can be reduced effectively, so that the reliability and accuracy of the detection result can be ensured.

Driving circuit for touch screen, touch screen, and electronic terminal

A display device and a method for displaying an image thereof are disclosed. The display device includes a display panel, a gray scale voltage output circuit, a common voltage output circuit and a control circuit. The display panel, according to a first gray scale voltage signal and a first common voltage signal, display an image; the control circuit is used for controlling the gray scale voltage output circuit and the common voltage output circuit to output a second gray scale voltage signal and a second common voltage to the display panel when at a predetermined time to display another image. The present invention can cause the blink rate to be maintained over time at a relatively stable range.

Display device and method for displaying an image thereon

The present invention discloses a detection circuit and a detection method of a self-capacitance touch screen. The detection circuit comprises a charging module and a voltage measuring module. The charging module is employed to connect the at least one touch control line for respectively charging a parasitic capacitance constructed by the at least one corresponding sensing electrode corresponded with the at least one touch control line and a ground by the charging module via the at least one touch control line at the same time in one detection period; the voltage measuring module is employed to electrically connect the at least one touch control line sequentially for acquiring a voltage measured value of the parasitic capacitance after charging via the at least one touch control line and outputting the voltage measured value, to obtain a detection result of normal or fault of the corresponding sensing electrode according to the voltage measured value after the charging module accomplishes charging and is disconnected from the at least one touch control line. With the aforementioned arrangement, the present is capable of simply and effectively achieving the detection of sensing electrodes.

Detection circuit and detection method for self-capacitance touch screen

The present invention discloses a liquid crystal display having touch function and a touch detection method thereof. The liquid crystal display comprises a display module and a touch module, and the display module and the touch module share a common electrode. The display module sequentially executes a plurality of operations of gate drive and gray scale drive in each frame. The touch module executes operations of touch detection as the display module executes a present operation of gate drive and gray scale drive and a voltage of the common electrode is in stable. With the aforementioned arrangement, the present invention is capable of reducing the interference of the display signals and the touch signals to improve the display quality and touch effect.

Liquid crystal display having touch function and touch detection method thereof

A display panel having a touch function, a display device, and a control method. The panel includes a first substrate having multiple pixel units. Each pixel unit includes a liquid crystal capacitor, a first switch, a second switch, and a first storage capacitor. A control, an input, and an output terminal of the first switch are respectively connected with a first controller, the liquid crystal capacitor, and the first storage capacitor. A control, an input, and an output terminal of the second switch are respectively connected with a signal controller, a common electrode, and the liquid crystal capacitor and the first storage capacitor. When a picture change rate is lower than a preset rate value, a turn-off time of the second switch is increased, and the first switch is turned on to increase the quantity of electric charge for maintaining a voltage of the liquid crystal capacitor.

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Guangdong, China

Yucheng Lu