VGS compensation source follower for the LTPS TFT LCD data driver output buffer

JunRen Shih; ShangLi Chen; Bowen Wang

doi:10.1117/12.389426

30 June 2000 VGS compensation source follower for the LTPS TFT LCD data driver output buffer

JunRen Shih, ShangLi Chen, Bowen Wang

Proceedings Volume 4079, Display Technologies III; (2000) https://doi.org/10.1117/12.389426
Event: Photonics Taiwan, 2000, Taipei, Taiwan

Abstract

Low Temperature Poly-Silicon (LTPS) TFT technology for LCD has been developed for a long time. Because of its higher mobility, scan driver and data driver could be fabricated on the glass panel to form a fully integrated display panel and reduce its cost. In this paper, new circuits for buffering the DAC in the data driver will be proposed. These circuits have the advantages of lower power and smaller area than the conventional ones. They all extend their full swing from 2 to 10 volts in 12 us and have 6-bit resolution at least. Furthermore, the circuits have no feedback system as the operational amplifier does, which is hard to design in the current LTPS technology.

Citation Download Citation

JunRen Shih, ShangLi Chen, and Bowen Wang "VGS compensation source follower for the LTPS TFT LCD data driver output buffer", Proc. SPIE 4079, Display Technologies III, (30 June 2000); https://doi.org/10.1117/12.389426

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