• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.277-282
• /
• 2003

Computational calculations are now successfully introduced to design liquid crystal molecules for uses in modern active-matrix displays. These material technologies are practically applied to develop novel compounds, enabling formulation of advanced liquid crystal mixtures together with a newly developed mixture purification method. Typical examples of these liquid crystal mixtures are introduced for modern displays in various applications.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.309-310
• /
• 2003

We have designed novel transreflective liquid crystal displays which utilize dielectric mirrors. The reflective and transmissive modes are operated in different wavelength regions. The displays have the advantages: (1) the brightness as a function of applied voltage is the same for both modes, (2) the backlight and ambient light are utilized efficiently.

• Journal of Information Display
• /
• v.2 no.4
• /
• pp.15-18
• /
• 2001

We report simple techniques to manufacture low-powered, high-resolution, reflective cholesteric displays using flexible plastic substrates. We use wax transfer printing to replace photo-lithography and incorporate polymer walls to increase the mechanical strength and lifetime of the displays. These printing methods can easily be adapted to roll-to-roll production.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2007.08a
• /
• pp.982-985
• /
• 2007

The authors report methods of fabrication singlelayer color cholesteric liquid crystal displays (CLCDs). A single-layer CLCD has been prepared from a polymerstabilized cholesteric liquid crystal. The unique feature of the polymer stabilization is in that the electrically switched colors preserve high reflectivity. A bistable single-layer CLCD has been prepared by the formation of polymer barrier walls and light-tuned cholesteric pitches to reflect blue, green and red color sub-pixels.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2004.08a
• /
• pp.202-204
• /
• 2004

We study theoretically optical properties of thin layered stacked monochrome cholesteric liquid-crystal displays. Thin thickness of the layers (${\sim}1{\mu}m$) allows us appreciably to reduce driving voltage and use such displays in smart cards. Good selective reflection is achieved due to stacked structure. Dependence of the reflectivity of this type of displays on the quantity of the layers, their thickness, and liquid crystal birefringence is investigated.

• Journal of Information Display
• /
• v.12 no.2
• /
• pp.97-99
• /
• 2011

We report flexible, bistable cholesteric displays utilizing polyester (PET) substrates with printed internal black electrodes. The black electrodes consist of carbon ink dispersed in butyl carbitol using a patented roll-to-roll gravure-offset printing. A transparent conducting polymer printed on PET serves as the counter electrode. The electro-optic material is a chiral nematic mixture dispersed in a low-concentration polymer binder. The device can be switched between scattering (black) and reflective (vibrant green) states upon application of an electric pulse. The internal black electrode enhances the contrast of the display and simplifies the roll-to-roll manufacture of flexible displays.

• Journal of the Korean Institute of Telematics and Electronics B
• /
• v.29B no.9
• /
• pp.27-36
• /
• 1992

A design of scanning electrode driving IC chip has been implemented aiming at the application to liquid crystal color television displays. The chip reflects the design characteristics of high quality liquid crystal panels and satisfies specifications of NTSC type color television displays. The design was verified using logic and circuit simulation, and fabricated using a high voltage CMOS process. A fully working die has been obtained that can be readily applicable to commercial color liquid crystal panels.

• Journal of Photoscience
• /
• v.5 no.3
• /
• pp.137-141
• /
• 1998

The current status of flat panel display (FPD) technologies is outlined, with emphasis on liquid crystal displays(LCDs). The principles of a number of LCDs are explained and compared with alternative technologies on the flat panel market. Recently annuounced LCDs, their structures, and their underlying technologies are summarized and compared.

• Transactions on Electrical and Electronic Materials
• /
• v.9 no.6
• /
• pp.251-254
• /
• 2008

Blue-white reflective cholesteric liquid crystal display was prepared by a unique method of single liquid crystal layer, the combination of yellow color liquid crystal and blue color backplane. The dopant and host combination of chlolesteric liquid crystal affects the color spectrum. The CIE chromaticity coordinates of blue and white are (0.10, 0.16) and (0.29, 0.30), respectively. The relatively low driving voltages of 32 V for blue-white display are obtained.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2009.10a
• /
• pp.14-16
• /
• 2009

Surface driven switching of the liquid crystal bulk arising from the coupling between an applied electric field and a polarized state of a nematic liquid crystal, both localized at the substrate surface, is reported. Fast switching is demonstrated in a hybrid aligned nematic cell with a fringe electric field generated by comb-like electrode structure.