Amorphous IGZO TFT-Based Pixel Buffer to Suppress Blue-Phase Liquid Crystal High-Frequency Effect

Chih Lung Lin, Po Syun Chen, Po Cheng Lai, Chih Cheng Hsu, Jui Hung Chang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

This letter discusses the frequency effect of polymer-stabilized blue-phase liquid crystal (BPLC) on the data voltages of a conventional pixel circuit and develops a new pixel buffer that exploits amorphous indium-gallium-zinc-oxide thin-film transistors (TFTs). During high-speed operations, BPLC seriously distorts data voltages because of the highly frequency-dependent dielectric anisotropy. To lessen the frequency-dependent effect of BPLC, a source-follower structure is integrated into the proposed pixel buffer to prolong the charging time of the BPLC cell. The experimental results show that the source-follower yields linear output characteristics. Further compensation for TFT VTH shifts and suppressing the leakage current are confirmed to make the data voltages on the BPLC cell highly uniform and stable.

原文English
文章編號8070321
頁(從 - 到)1673-1675
頁數3
期刊IEEE Electron Device Letters
38
發行號12
DOIs
出版狀態Published - 2017 十二月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 電氣與電子工程

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