本論文提出了兩顆應用在薄膜電晶體液晶顯示器驅動電路之輸出緩衝器。第一顆輸出緩衝器是適用於待機時間長的電子產品如手機、PDA與電子書等。第二顆為適用於不同面板負載的輸出緩衝器，可應用於高解析度高品質的液晶面板中。
第一顆輸出緩衝器是使用尾電流控制之低靜態電流高驅動力輸出緩衝器。利用N型與P型的輸入差動對組成一組軌對軌的輸入差動對，使其輸入訊號能達到全電壓的範圍。尾電流控制電路可以偵測輸入電壓的變動來控制整體電路的尾電流，使之在動態時能達到大的驅動能力，但在靜態時仍能保持低功耗。
第二顆輸出緩衝器為一可具面板負載電容調整輸出級的充放電電流的輸出緩衝器。此輸出緩衝器在內部加入動態電流調整機制以及在外部加入了一個可偵測面板負載電容的回授電路，使之能在面板電容負載不同時調整充放電電流，使緩衝器的迴轉率和電壓穩定時間能保持在一定範圍內，提高面板品質的一致性。

In this thesis, two types of output buffers for TFT-LCD driver IC are proposed. The first one is applied to electronic products like cell phone, PDA and e-book reader. And the second one can be implemented in high-resolution and high-quality LCD drivers.
The first design is a low static current tail current control output buffer for TFT-LCD. This buffer consists of an NMOS and a PMOS input differential pairs. These two complementary input differential pairs realize a rail-to-rail output buffer. The presented output buffer has a large driving capability because of the tail current control loop. The tail current control loop can increase charging capability when NMOS input differential pairs are active, and increases discharging capability when PMOS input differential pairs are active. This buffer has large driving capability but remain low power consumption in static state.
The second design is an output buffer with slew-rate calibration for different TFT-LCD. This output buffer adjusts the output current according to the loading capacitors. The settling time and slew-rate of the proposed output buffer are thus fixed in an acceptable range for different TFT-LCD loading capacitors, allowing more accurate color quality.

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