Industrial Technology Research Institute

Wistron Optronics Corporation

M-display Optronics Corporation

Prime View International Corporation Limited

Prime View International Co. Ltd.

Hong-Da Liu

Chen-Lung Kuo

Chung-Kuang Wei

Wen-Jian Lin

Hung-Huei Hsu

Chi-Yi Chen

Dai-Liang Ting

Ching-Yih Chen

Wen-Chung Tang

Ing-Jer Lin

Ching-Her Chao

A surface light source device. A light guide plate has an incident end face, an emitting face, at least one full-reflective face, and a plurality of light adjusters. The full-reflective face reflects light onto the incident end face for direction to the emitting face for transmission. The light adjusters are disposed in the light guide plate with a density discontinuously varied in at least one area of the light guide plate to adjust light collection for emission from the different areas of the emitting face, hereby providing discontinuous light intensity. The light source is disposed in the vicinity of the incident end face.

Surface light source device

A structure of an ultra-micro reflector having abrasive surface with tapered micro bumps and free of resin layer and its fabrication method are provided. The reflector structure comprises mainly a layer of reflector metal, a scattering element with abrasive surface, and a layer of ITO. The abrasive surface has many tapered micro bumps. The reflector structure can be applied to a reflective or partially reflective LCD to achieve optimal performance. It makes the scattering angle of the reflective light source wider and more uniform. The variation of the gap of liquid crystal cells is greatly reduced, so that the reflective efficiency can be kept in an optimal condition. The reflector structure has larger scattering angle, smooth effect, and very good anti-glare effect. The fabrication process of the reflector structure is simple. The material cost for the abrasive surface is inexpensive. The reflector can endure higher temperature than conventional organic reflective elements, because the inorganic thin film process is used.

Reflector structure in a liquid crystal display and its fabrication method

A pixel and its process for an in-plane switching liquid crystal display achieves more spreading angles and smooth performance for scattering of light for image display therewith by using a reflector having a reflective surface with roughness in nanometer scale for light scattering and contrast improvement. As a result, the reflectivity doesn't change enormously with the viewing angle and excellent anti-glare effect is obtained. Moreover, the roughness of the reflective surface is formed by the crystallization and the characteristic of the material thereof owns, and thus no additional mask is required.

In-plane switching liquid crystal display having nanometer scale roughness

A reflector structure in a liquid crystal display having light condensing effect comprises mainly an active device substrate, a condenser having diffraction or refraction effect being formed above the substrate, a spacing layer being formed above and covering the condenser, and a reflective unit being formed above the spacing layer. The condenser can be a holographic diffraction unit, micro prisms or micro lens unit. It can be on a TFT substrate or a color filter. The color filter can be located at the same or opposite side with the TFT substrate. The spacing layer may be an over coat layer, a color filter, a color filter and an over coat layer on the color filter, or a substrate. The reflective unit also has various structures, reflective angles, and reflective effects. The invention utilizes the condenser to collect light. 60% to 95% of unused backlight is collected. The backlight gain is over 120% to 400%, thereby greatly saving the power consumption for the backlight source.

Reflector structure in a liquid crystal display having light condensing effect

A flat display displays images on both sides is disclosed. The flat display includes a liquid crystal molecule layer disposed between two substrates, and a driving array having a plurality of switch devices disposed on one of the substrates. Images are asynchronously displayed on both sides of the flat display by controlling a rotation state of the liquid crystal molecule layer by the driving array in cooperation with a light source provided by a light source module. The light source module includes two light-guiding plates. One of the light-guiding plates is disposed on the substrate having the driving array, and the other light-guiding plate is disposed on the other substrate having a color filter.

Flat display

A thin-film transistor and a liquid crystal display having an ultra minimal rough reflective layer on pixel design are described. An ultra minimal rough reflective layer with an ultra minimal rough surface is formed on a substrate. The ultra minimal rough reflective layer includes an amorphous or partial crystalline indium tin oxide layer and a silicon-containing rugged layer to form the ultra minimal rough surface. A reflective layer conformal to the rugged layer is then formed thereon to obtain an ultra minimal roughness reflective surface, thereby to enhance reflective results.

Roughness reflective layer for pixel designed thin film transistor and liquid crystal display

A wide viewing angle fringe field multi-domain vertically aligned LCD panel and a method for fabricating the panel are disclosed. The LCD panel can be constructed by a first light-missive transmissive substrate, an electrically conductive layer coated on an inside surface of the first light-transmissive substrate to form a first electrode, the layer is substantially optically transparent; a second light transmissive substrate; and electrically conductive grid of horizontal and vertical bars coated on an inside surface of the second light-transmissive substrate to form a second electrode; a cavity formed between the two inside surfaces of the first and second light transmissive substrates and a peripheral seal when the two substrates are positioned together in a spaced-apart relationship; and a liquid crystal material filling the cavity.

Wide viewing angle fringe field multi-domain aligned LCD with electrically conductive grids and method for fabricating

A reflector structure in a multi-domain liquid crystal display comprises an active matrix device structure having regions of various height levels, a diffusing layer, and a structure of multi-domain reflective layer. The diffusing layer is formed above the active matrix device structure with multiple extruded bumps of various film thickness and various heights and shapes. The reflector structure has various reflective angles and reflective effects to improve the quality of LCD panel. It can be used in the reflective layer of a reflective or semi-reflective TN, STN, TFT, or TFD. The reflector fabrication process uses conventional process for a metal or an insulation layer on a TFT substrate to form multiple domains within a pixel area. After forming the cell structure of the multi-domain reflective layer, liquid crystal cells form multiple domains within a pixel area.

Reflector structure of a multi-domain liquid crystal display and its fabrication method

In a reflective or transflective LCD comprising a TFT plate and a color filter plate with a LC layer of negative dielectric anisotropy inserted therebetween, a pixel electrode and a common electrode consisting of a plurality of strips are provides on the TFT plate to produce a fringe field applied on the LC layer for a phase difference that is compensated by a compensator. A scattering film is introduced in the LCD to enhance the brightness. A polarizer is arranged with its polarization direction at an angle from the extension axis of the compensator.

Scattering fringe field optical-compensated reflective and transflective liquid crystal display

A liquid crystal display has at least one concave structure formed on one of pixel and electrode layers in each pixel area. Between the electrode layer having concave structures and a substrate is a passivation layer that is dented by the concave structures. The concave structures form multiple domains for each pixel. One of the electrode layers may be formed with bump structures or openings combining with fringe field effect to provide pre-tilting of liquid crystals to enhance the effect of multiple domains. Each concave structure in a pixel area can have a different top view, cross-sectional view or three-dimensional structure. The concave structure can be formed by existing manufacturing process. One mask rubbing process or photo-aligned method may be used to align liquid crystals for the display in cooperation with the concave structures.

Multi-domain liquid crystal display having concave virtual bump structures

A multi-domain liquid crystal display (LCD) has a plurality of wall-bump structures formed on a common electrode layer on a substrate. Each wall-bump structure consists of at least one wall-bump disposed in a pixel area. Wall-bumps of many different shapes can be used in the wall-bump structure. The wall-bump structure is manufactured by a standard photo-lithographic process. It provides pre-tilted angles for liquid crystal molecules and results in orderly alignment of liquid crystal molecules when an external voltage is applied. By means of the fringe field effect to tilt liquid crystal molecules, a multi-domain LCD cell can be established after a voltage is applied. The multi-domain LCD provides fast response speed for its application and higher transmittance than a conventional vertically aligned wide-viewing angle LCD.

Multi-domain liquid crystal display with wall-bump structures in pixel area

A multi-domain wide viewing angle liquid crystal display (LCD) has a plurality of bump-with-slit structures formed on at least one substrate. Each bump-with-slit structure in a single pixel area includes a plurality of slits formed on the electrodes and a plurality of bumps formed above the slits. It uses the combination of bumps and electrode slits to control the directions of the pre-tilted angles of liquid crystal molecules and to form multiple domains. The capacity storage area is designed and located under the slit of the electrode. Such capacity storage area has the function of covering the disclination lines. The LCD structure decreases the color dispersion of the LCD, increases the response speed and reduces the generation of disclination lines. Moreover, the driving voltage for the LCD is lower and the process window is larger. Because the generation of disclination lines is reduced, the aperture ratio under the black matrix area of the multi-domain wide-viewing angle LCD of the invention is increased by 15% to 20% as compared to the conventional multi-domain LCD.

Multi-domain wide viewing angle liquid crystal display having slits on electrodes and bumps above the slits

A multi-domain wide viewing angle liquid crystal display (LCD) has a plurality of superimposed spacing wall-bump structures formed on a pair of parallel substrates. Each superimposed spacing wall-bump (SSWB) structure includes a surrounding wall-bump structure formed around a pixel area on a first substrate and a central wall-bump structure formed in a central portion of the pixel area on a second substrate. Wall-bumps of many different shapes can be used for the central wall-bump structure. The superimposed spacing wall-bump structure provides pre-tilted angles for liquid crystal molecules and results in orderly alignment of liquid crystal molecules when an external voltage is applied. By means of the fringe field effect to tilt liquid crystal molecules, a multi-domain LCD cell can be established after a voltage is applied. The manufacturing method for the SSWB needs neither rubbing process nor polymer stabilized ultraviolet curing process. The multi-domain wide viewing angle LCD provides fast response speed for its application and higher transmittance than conventional multi-domain wide-viewing angle LCDs.

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Juipei, Taiwan

Hong-Da Liu