Switchable transmissive and reflective liquid‐crystal display using a multi‐domain vertical alignment

Abstract

Abstract— A wide‐view transflective liquid‐crystal display (LCD) capable of switching between transmissive and reflective modes in response to different ambient‐light conditions is proposed. This transflective LCD adopts a single‐cell‐gap multi‐domain vertical‐alignment (MVA) cell that exhibits high contrast ratio, wide‐viewing angle, and good light transmittance (T) and reflectance (R). Under proper cell optimization, a good match between the VT and VR curves can also be obtained for single‐gamma‐curve driving.

Transflective device with a transparent organic light‐emitting diode and a reflective liquid‐crystal device

“…A benchmark for the A-CR values of this work, compared with the existing transflective LCD, can be a CR > 100:1 over 85°and CR > 10:1 over 70°for the T-and Rmodes, respectively. 18 In our tandem device, for T-mode operation, because there is no light leakage during OLED off-state, the CR ratio is infinite at all viewing angles. Besides, the vertically stacking structure increases the aperture ratio of the T-mode (as well as R-mode) region compared with a transflective LCD.…”

Handheld and automated ultrasonic spray deposition of conductive PEDOT:PSS films and their application in AC EL devices

“…This high-throughput deposition technique is mainly known for its huge number of applications in painting, agriculture, high-end industrial coatings and graphic industry. More recently, spray has demonstrated to be a valuable method in microelectronics [1], silicon-based photovoltaics [2] and liquid-crystal displays [3] for photoresist, anti-reflective coating and spacers deposition, respectively.…”

A single‐cell‐gap transflective liquid‐crystal display using different pretilt angles in transmissive and reflective regions

“…To solve this problem, several techniques have been developed. [3][4][5][6][7][8][9][10][11][12][13] For example, the dual-cell-gap structure employs different cell gaps for the T and R modes to compensate the phase difference. However, these devices are difficult to manufacture due to their varied cell gaps in the T and R regions, and the T region has a slower response time than the R region because its cell gap is about twice as thick as that of the R region.…”