Hannstar Display Corporation

Hsuan-Lin Pan

Po-Sheng Shih

Po-Yang Chen

Jiunn-Shyong Lin

Chien-Yung Cheng

The present invention provides a liquid crystal display with a plurality of pixel units. Each pixel unit includes two sub-pixels, and each sub-pixel includes a thin film transistor, a liquid crystal capacitor and a storage capacitor. One of the storage capacitors is a tunable capacitor. The tunable capacitor includes a first conductive layer, an insulating layer, a semiconductor layer with a area A, and a second metal layer. The second conductive layer has a first region with a area Aoverlapping with the semiconductor layer. The area Ais less than the area A.

Liquid crystal display

A pixel driving method for a display device is provided. The display device includes at least a first and a second pixels coupled to a signal terminal. The first pixel is located farther from the signal terminal than the second pixel, and each pixel is driven during a time period, which includes a first operation period and a second operation period. The pixel driving method includes steps of generating a compensation voltage and an ideal voltage according to a gray scale value of the each pixel, charging/discharging the each pixel by the compensation voltage corresponding to the each pixel during the respective first operation period, and charging/discharging the each pixel by the ideal voltage corresponding to the each pixel during the respective second operation period. The first operation period for charging/discharging the first pixel is longer than that for charging/discharging the second pixel.

Pixel driving method for display device

A display apparatus and a method for driving a display panel thereof are provided. The display panel includes an inducing signal readout line and N gate lines, in which N is a natural number. The inducing signal readout line is coupled to a plurality of inducing circuits. Each inducing circuit is coupled to one of the gate lines, and the Ngate line is coupled to one of the inducing circuits. In the method, several gate pulses are provided to drive the gate lines sequentially to turn on the corresponding inducing circuits, wherein at least a portion of the driving duration of a gate pulse provided to the Ngate line is in a blanking time between two frames.

Display apparatus and method for driving display panel thereof

The invention provides methods of driving a pixel and liquid crystal display panels implementing the methods. The invention generates an ideal data voltage corresponding to a gray level of the pixel, and generates a compensated data voltage corresponding to the gray level according to a polarity change of the pixel. The charging period of the pixel is divided into a first charging time segment and a second charging time segment. The invention charges the pixel by the compensated data voltage during the first charging time segment, and charges the pixel by the compensated data voltage during the second charging time segment.

Method of driving a pixel and liquid crystal display panel implementing the method

A liquid crystal display panel and its driving method are provided. The liquid crystal display panel includes: a plurality of scanning lines and data lines; a pixel matrix having a plurality of pixels which are formed in the intersections of the scanning lines and the data lines; and each of the pixels having: a pixel electrode; a control electrode; a first thin film transistor having a gate electrode connected to the scanning line, a first electrode connected to the data line and a second electrode connected to the pixel electrode; a second thin film transistor having a gate electrode connected to another adjacent scanning line, a first electrode connected to another adjacent data line and a second electrode connected to the control electrode; and wherein one of the two most outside data lines of the pixel matrix is called a boundary data line, and an auxiliary line is disposed between the boundary data line and the pixel electrode adjacent to the boundary data line.

Liquid crystal display panel with auxiliary line disposed between boundary data line and pixel electrode and driving method thereof

A novel method for driving the data signal transmission and the photo signal readout in a pixel of a display as well as the novel pixel structure corresponding thereto is provided to overcome the lightness uniformity issue of the conventional touch sensitive display resulting from the configuration of readout line. In the present invention, the exclusive readout line for signal readout is not necessary anymore, and through the well-designed configuration for the novel pixel, the data line carrying on a data signal would transmit a photo signal to be read out and processed as well.

The invention provides a liquid crystal display panel, comprising a plurality of scan lines fabricated along a first axis, a plurality of data lines fabricated along a second axis, a first pixel and a second pixel. Each of the first and second pixels is surrounded by two adjacent scan lines and two adjacent data lines. The first pixel comprises a first thin film transistor (TFT). The second pixel comprises a second and a third TFT. The gates of the second and third TFT are electrically connected to the two adjacent scan lines surrounding the second pixel, respectively. The third TFT further comprises a source electrically connected to a photo-sensor, and a drain electrically connected to an access line fabricated along the second axis. One end of the access line is electrically connected to a signal processor via a switch.

Liquid crystal panel and driver device thereof

A pixel region is surrounded in any adjacent scan lines and any adjacent data lines. Two thin film transistor (TFT) groups that are controlled by different scan lines are located in each pixel region. The two data lines respectively send different polarity data to the pixel region through the two TFT groups. At least one capacitor is used to couple with the two TFT groups for providing a coupling effect to make sure the voltage in the two connection points simultaneously goes up and down.

Growing community of inventors

Tao-Yuan Hsien, Taiwan

Hsuan-Lin Pan