Chunghwa Picture Tubes, Ltd.

Hsin-Chung Huang

Juin-Ying Huang

Hung-Shiang Chen

Yi-Nan Chu

Yi-Cheng Chen

Yi-Hsing Huang

I-Cheng Chen

A liquid crystal display (LCD) device and a driving method thereof are provided. Data lines are grouped into a plurality of data line groups according to polarities of data driving signals corresponding to the data lines, and the data line groups are respectively driven, where driving periods of the data line groups are spaced by a predetermined time interval, so as to effetely decrease a coupling effect and greatly improve the display quality of the LCD device.

Liquid crystal display device and driving method thereof

A common voltage compensation device suitable for a display panel of a liquid crystal display is provided. The common voltage compensation device includes a timing controller and a compensation circuit. The timing controller receives an image signal and generates control signals to the compensation circuit according to a determination mechanism. The compensation circuit sends a common voltage compensation signal to the display panel according to the control signals outputted from the timing controller in order to compensate the common voltage on the display panel. The determination mechanism performs an analysis of a gray scale distribution of a horizontal line signal of the image signal, and determines whether to compensate the common voltage according to an analysis result, and determines a polarity required to be compensated to perform the compensation when the compensation is needed.

Common voltage compensation device, liquid crystal display, and driving method thereof

A flat panel display, an image correction circuit and method thereof are provided. The image correction circuit mainly includes a digital to analog conversion unit and a data processing unit. The digital to analog conversion unit includes a temperature sensor and a gamma voltage generator. The gamma voltage generator is adopted for generating a plurality of gamma voltages, and the temperature sensor is electrically connected to the gamma voltage generator and adopted for sensing the working temperature of the gamma voltage generator. The data processing unit is electrically connected to the digital to analog conversion unit. When the working temperature of the gamma voltage generator changes to higher (or lower) than the room temperature, the data processing unit selects and outputs applicable digital data to the digital to analog conversion unit. Therefore, the digital to analog conversion unit outputs a predetermined gamma voltage at room temperature according to the digital data.

Flat panel display, image correction circuit and method of the same

A control circuit and a method discharging capacitor/transistor, for a liquid crystal display (LCD), are provided. The control circuit includes a signal-off detector and an all-gate-on delay cell. When an LCD power-off signal is detected, a first control signal is transmitted to a power supply module for turning off power except the gate-on voltage, and turning off VGH after a specific delay time. A second control signal is also transmitted to the gate-on-delay cell, so that all gates of the pixel transistors are turned on after a second specific delay time. The charges on the pixel transistor are discharged via a source thereof before the gate-on voltage decreases below a threshold value, such that a residual image phenomenon caused by heterogeneous filming fabrication is reduced.

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Taipei County, Taiwan

Hsin-Chung Huang