Novatek Microelectronics Corp.

Ping Chen

Tsung-Hau Chang

Ying-Hsiang Wang

Cheng-Tsu Hsieh

Syang-Yun Tzeng

Ching-Wen Hou

Chi-Wei Liu

An electronic device includes a substrate and a display driver chip bonded on the substrate. The display driver chip includes a plurality of operational amplifiers, and each of the operational amplifiers has a first stage and a second stage. The first stage includes a first power input terminal. The second stage includes a first power input terminal and an output terminal for outputting an output voltage. The first power input terminal of the first stage is connected to a first metal trace of the substrate, and the first power input terminal of the second stage is connected to a second metal trace of the substrate. The first power input terminal of the first stage and the first power input terminal of the second stage are both provided with a first voltage level.

Electronic device and display driver chip

A driving circuit of display apparatus includes an operational amplifier (OP), comprising a plurality of input terminals; a digital-to-analog converter (DAC); a multiplexer, coupled to the OP and the DAC, comprising a plurality of switches; and a boosting module, configured to decrease an equivalent time constant between the DAC and the OP to increase an output slew rate of the OP in a boosting period; wherein the boosting period is enabled before a steady state of the OP.

Driving circuit of display apparatus and driving method thereof

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Tainan, Taiwan

Ping Chen