39.4: A New MVA‐LCD with Jagged Shaped Pixel Electrodes

Abstract

We have developed a new MVA-LCD with fast gray-scale response characteristics. The newly designed jagged shaped pixel electrodes give the oblique electric field and effectively control the LC alignment not only statically but also dynamically. We have realized the response time of 30ms (1/3 of the conventional MVA) for any gray-scale switching keeping other advantageous characteristics same; CR, viewing range etc..

11.3: Distinguished Paper: High Transmission VA‐LCD with a Three Dimensionally Shaped Pixel Electrode for 4K × 2K Displays

“…There are no slits, bumps, or protrusions in the pixel area of this TD electrode. As the conventional electrode with pre-tilt technology was created to obtain a high transmittance property, the fishbone-shaped fine-slit electrode [5] was developed. However, the fine slit electrode still has the insufficient regions in the pixel areas.…”

Reduction of Gamma Distortion in Oblique Viewing Directions in Polymer-stabilized Vertical Alignment Liquid Crystal Mode

“…Many works have been reported to overcome such drawbacks with their own particular features, e.g. multidomain vertical alignment (MVA), which has protrusions on the surface [8,9]; advanced super-view (ASV) [10]; patterned vertical alignment (PVA), which utilizes an oblique electric field formed by electrodes of desired patterns [11][12][13]; and polymer-stabilized vertical alignment (PS-VA), in which a pretilt angle is achieved by a certain polymer morphology on the surface [14][15][16]. In all VA modes, vertically aligned LCs tilt down in four different azimuthal directions, to improve the viewing-angle property.…”

Transmittance Improvement with Reversed Fishbone-Shape Electrode in Vertical Alignment Liquid Crystal Display

“…Meanwhile, several LCD modes have also been highly developed for commercialization and they can be distinguished by a ground state of LC and an electrode structure, such as twisted nematic (TN) [1], vertical alignment (VA) [2][3][4][5][6][7][8][9], in-plane switching (IPS) [10,11] and fringe field switching (FFS) modes [12][13][14][15]. Among them, advantages of the VA mode are rubbing-free, an excellent dark state at normal view, and wide viewing angle.…”

“…Herein, due to the wide viewing, the LC reorientation needs to be in multi-directions. The conventional multi-domain VA (MVA) [2][3][4][5][6] and patterned VA (PVA) [7][8][9] have shortcomings, such as low transmittance and slow rise response time. In order to overcome the slow rise response time of such VA modes, the polymer-stabilized VA (PS-VA) mode [16][17][18][19][20] has recently been proposed, but the low-transmittance issue still persists and furthermore gives rise to a power consumption issue when employed in high resolution LCDs such as ultra-high-definition (UHD) LCDs.…”