We synthesized photoalignment material of high thermal resistance with hydroxyl aromatic polyimide, and studied the liquid crystal (LC) aligning capabilities on the photopolymer layers. Also, electro-optical (EO) performances for the twisted-nematic (TN)-liquid crystal display (LCD) photoaligned with linearly polarized UV exposure were investigated. A good LC alignment with UV exposure on the photopolymer surface can be obtained. However, the low pretilt angles were obtained below 1°. The voltage-transmittance curve without backflow bounce in the photoaligned TN cell with UV exposure was observed. The response time of photoaligned TN cell was measured about 24 ms. The residual DC voltage of photoaligned TN cell will be discussed.
|Number of pages||11|
|Publication status||Published - 2006|
|Event||2005 International Meeting on Ferroelectricity, IMF-11 - , Argentina|
Duration: 2005 Sep 5 → 2005 Sep 9
Bibliographical noteFunding Information:
This work was supported by National Research Laboratory program (M1-0203-00-0008).
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics