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Journal of Display Technology

Journal of Display Technology


  • Vol. 2, Iss. 2 — Jun. 1, 2006
  • pp: 153–159

On-Panel Output Buffer With Offset Compensation Technique for Data Driver in LTPS Technology

Ming-Dou Ker, Chih-Kang Deng, and Ju-Lin Huang

Journal of Display Technology, Vol. 2, Issue 2, pp. 153-159 (2006)

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To overcome the offset voltage (VOS) of output buffer due to large variation on characteristics of thin-film transistor (TFT) in low-temperature polysilicon (LTPS) technology, a class-B output buffer with offset compensation circuit for the data driver is presented in this paper. This proposed class-B output buffer can operate at 50-kHz operation frequency with a 2-8-V output swing for extended graphic array (XGA) application, and it has been demonstrated in 3-µm LTPS technology. Using the offset compensation technique, the VOS of output buffer can be controlled within ±100 mV under 2-to-8 V signal operation to achieve a high resolution and quality liquid crystal display (LCD) panel.

© 2006 IEEE

Ming-Dou Ker, Chih-Kang Deng, and Ju-Lin Huang, "On-Panel Output Buffer With Offset Compensation Technique for Data Driver in LTPS Technology," J. Display Technol. 2, 153-159 (2006)

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