Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Byung Wok Park"'
Publikováno v:
Bulletin of the Korean Chemical Society. 39:401-404
Publikováno v:
Liquid Crystals. 42:1201-1205
We found that we can increase the transmittance of a liquid crystal (LC) cell by doping the alignment material with nanoparticles. We fabricated an LC cell using indium–tin–oxide glass substrates coated with SiO2-doped polyimide. We confirmed tha
Publikováno v:
Journal of Information Display. 16:1-10
Optical compensation to improve the wide-viewing-angle characteristics in a liquid crystal display (LCD) is essential for high-quality dark images, especially from the bisector direction of the crossed polarizers. This paper reviews optical compensat
Publikováno v:
Journal of the Optical Society of Korea. 18:395-400
We proposed a method for fast turn-off switching of a vertically-aligned liquid crystal cell by low-temperature curing of the polymer structure. We confirmed that the turn-off times of the fabricated cells were reduced significantly as the curing tem
Autor:
Hoon Kim, Ki-Han Kim, Sun-Wook Choi, Tae-Hoon Yoon, Ki-Chul Shin, Byung Wok Park, Hee Seop Kim, Ji-Hoon Lee
Publikováno v:
Liquid Crystals. 40:391-395
We propose a method for vertical alignment (VA) of liquid crystals (LCs) without alignment layers by mixing only a very low concentration (0.05 wt%) of an organic compound with LCs. The electro-optic characteristics of a VA cell fabricated by the pro
Autor:
Hoon Kim, Ki-Han Kim, Dong Han Song, Eun-Young Jeon, Byung Wok Park, Hee Seop Kim, Ki-Chul Shin, Tae-Hoon Yoon, Sun-Wook Choi
Publikováno v:
Journal of the Optical Society of Korea. 16:166-169
We propose a high-transmittance multi-domain vertical alignment liquid crystal device with a protrusion structure. Disclination lines, which inevitably appear at the boundaries of domains in a multi-domain structure, can be reduced by adding a protru
Publikováno v:
SID Symposium Digest of Technical Papers. 45:1473-1475
We propose a method for fast switching of a vertical alignment (VA) liquid crystal (LC) cell by forming polymer networks at a low temperature. We found by experiment that the response time of a VA cell can be reduced by low-temperature curing. The tu
Publikováno v:
SPIE Proceedings.
Among various liquid crystal display modes, the in-plane switching mode exhibits the widest viewing angle because the liquid crystals are homogeneously-aligned initially and rotate within a plane parallel to the substrates when an in-plane field is a
Autor:
Yu Ri Shim, Sun Yong Lee, Byeong-Hun Yu, Sung-il Park, Ki-Han Kim, Sun-Wook Choi, Byung Wok Park, Byeong Koo Kim, Dong Han Song, Sung Gu Kang, Tae-Hoon Yoon, Jeong Hwan Yoon
Publikováno v:
SID Symposium Digest of Technical Papers. 44:1307-1309
We propose a method for fast switching of an in-plane switching (IPS) liquid crystal cell at a low temperature. The slow response time that is inevitable at a low temperature was reduced by forming polymer networks in an IPS cell. The electro-optic c
Publikováno v:
SID Symposium Digest of Technical Papers. 44:1359-1361
We propose a method for multi-domain vertical alignment of liquid crystals without additional transistors. By irradiating UV light to the polyimide through a patterned photomask, we can obtain different threshold voltage in a VA cell. There is no lig