Himax Technologies, Inc.

Jen-Wen Cheng

Chin-Tien Chang

Chuan-Che Lee

A source driver including a controller, a plurality of flip-flops, a plurality of shift registers and a plurality of driving channels is provided. The controller extracts control information from an image data stream. Each of the flip-flops respectively receives a corresponding control bit of the control information, and output the corresponding control bit. The shift registers correspond to the flip-flops one by one, and sequentially transmit an enable pulse. Each of the shift registers determines whether to output the enable pulse according to the control bit outputted by the corresponding flip-flop. The driving channels correspond to the shift registers one by one. Each of the driving channels switches an operation state into an enable mode or a disable mode according to the enable pulse outputted by the corresponding shift register.

Source driver and display device

An image display system and a pixel array driving method thereof are disclosed. The image display system has a source driver having a first and a second digital-to-analog converter and a first and a second switching circuit. The first digital-to-analog converter converts an N-bit digital code to a first analog signal, where N is a positive integer. The second digital-to-analog converter converts a K-bit digital code to a second analog signal, where K is a positive integer and is smaller than N. The first switching circuit controls coupling between a first display data, a second display data and the first and second digital-to-analog converters, and, the second switching circuit controls connections between the first and second analog signals and a first and a second operational amplifier. The first and second operational amplifiers are coupled to a first and a second data line of a pixel array, respectively.

Source driver of image display systems and methods for driving pixel array

A touch apparatus including a touch capacitor and a touch control unit is provided. The touch control unit includes a signal sampling and saving unit, a switch unit, and a signal processing unit. The signal sampling and saving unit samples and saves a voltage on the touch capacitor during enable periods of a sample signal and a charge reset signal, so as to generate a touch voltage and a reset voltage respectively, and further generate an average voltage of the touch voltage and the reset voltage according to an equalization signal. The switch unit receives and transmits the touch voltage, the reset voltage, and the average voltage according to a first control signal. The signal processing unit couples the touch voltage, the reset voltage, the average voltage, and a common voltage according to a second control signal, so as to generate a first coupling voltage and a second coupling voltage.

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Tainan County, Taiwan

Jen-Wen Cheng