Mixed-mode twisted nematic liquid crystal cells for reflective displays

Abstract

Fourdomain twisted nematic liquid crystal display fabricated by reverse rubbed polyimide process

Tunable and Memorable Optical Devices with One-Dimensional Photonic-Crystal/Liquid-Crystal Hybrid Structures

“…Under such a circumstance, birefringence effect will also take place. The triumph of MTN is its wide use in reflective LC displays, including pico projectors (Wu & Wu, 1996). Figure 2 shows the phenomenon of the wavelength shift of defect modes in two PC/TN cells impregnated with two different nematic LC materials.…”

Efficient polarization converter for projection displays

“…One example is an electrically controlled birefringence ͑ECB͒ LCD. 1 Other examples are the reflective TN ECB, 2 the mixed-mode TN cell ͑MTN͒, 3 and the optically compensated bend ͑OCB͒ mode. 4 After its transmission through the polarization converter, an image can subsequently be formed on a projection screen with an imaging lens.…”

“…[1][2][3][4] However, all light sources produce mostly unpolarized light. Hence the effective control and conversion of unpolarized light into polarized light is an important concern for projection displays.…”

Improved Vertically-Aligned Nematic Mode for High Performance Displays

“…Many liquid crystal modes adopted in the initial stages of liquid crystal displays (LCDs) have disappeared from the display market due to customer demands for higher image quality. Only LC modes with excellent electro-optical properties, e.g., vertical alignment (VA) type nematic modes [1][2][3], in-plane switching (IPS) mode [4], fringe field switching (FFS) mode [5], twisted nematic mode (TN) [6], and optically-compensated bend (OCB) mode [7][8][9], have survived in various display applications.…”