25.3: An Ultra‐High‐Quality MVA‐LCD Using a New Multi‐Layer CF Resin Spacer and Black‐Matrix

Abstract

An ultra-high-quality MVA-LCD has been developed using a newly designed CF. The Cr black-matrix was replaced by multi-layer CF resin, which was also used to eliminate the conventional bead spacer. The protrusions that are essential to building rubbing-less MVA panels are stacked on the multi-layer CF resin coated by ITO to prevent electrical shorting between the CF and TFT substrates and to maintain the appropriate cell gap. This beadless MVA panel improves the transmittance and cell gap uniformity. Moreover, this new design removes Cr BM from the CF structure and eliminates both spacer dispersion and rubbing from the MVA panel process.

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.…”

Room‐temperature deposition of thin‐film indium tin oxide on micro‐fabricated color filters and its application to flat‐panel displays

“…It is also being applied to organic light-emitting-diode (OLED) displays. [1][2][3][4][5][6][7][8] For voltage-driven LCDs, color filters (CFs) are generally coated on indium tin oxide (ITO) electrodes, 1 resulting in a CF/ITO/substrate structure. For an active-matrix display, the substrate may contain thin-film transistors (TFTs).…”