Abstract: Provided is an automatic holographic display device including: a first liquid crystal panel, a second liquid crystal panel disposed below the first liquid crystal panel, and a backlight that is disposed below the second liquid crystal panel and emits light, wherein the second liquid crystal panel comprises a cholesteric liquid crystal panel in which a barrier region and a slit region are alternately arranged according to an applied electric field, a first phase difference plate disposed above the cholesteric liquid crystal panel, and a second phase difference plate disposed below the cholesteric liquid crystal panel, wherein the backlight comprises a reflection plate that reflects light. The automatic holographic display device includes a modulated cholesteric liquid crystal panel and a phase difference plate, and thus mutual conversion between 2D flat images and 3D holographic images can be easy, the process of manufacturing the device can be simplified, and the manufacturing costs can be decreased.
Abstract: Disclosed is a method for aligning polymer network liquid crystal. In the method, alignment of liquid crystal in a bulk state is controlled by means of an orientation power of polymer material itself which is formed by irradiating linearly polarized ultraviolet rays to monomer material having an orientation power, thereby achieving a transparent state at an initial state without an orientation layer. That is, Linearly polarized ultraviolet rays are irradiated to ultraviolet-hardening type monomers having an orientation power. Alignment of liquid crystal of a bulk state is controlled while the monomers are changed to polymers, thereby achieving an initial transparent state. The molecules of the liquid crystal are placed in disorder by a vertical electric field and the horizontal orientation power of a polymer chain.
July 19, 2006
Date of Patent:
November 4, 2008
Boe Hydis Technology Co., Ltd.
Mi Sook Kim, Sung Hun Song, Seung Hee Lee
Abstract: Provided is a method of fabricating a liquid crystal display device. The method includes fabricating a liquid crystal panel divided into transmission and non-transmission regions, and including an upper substrate and a lower substrate, which are spaced apart from and opposite to each other, and a liquid crystal layer filled between the substrates, wherein the lower substrate has a plurality of thin film transistors; depositing a transparent conductive layer having a certain thickness on the upper substrate exposed to the exterior of the liquid crystal panel; and performing an etching process for removing the entire transparent conductive layer and a portion of the upper substrate to form irregular prominences and depressions on a surface of the upper substrate exposed to the exterior. Therefore, it is possible to improve readability and contrast ratio by diffusely reflecting external light and scattering internal light.
Abstract: A color filter substrate for a liquid crystal display and a method of fabricating the same are provided. The color filter substrate for a liquid crystal display includes: light shielding parts formed on a substrate at predetermined intervals to prevent light leakage; color filter Layers disposed between the light shielding parts and including color filter patterns of red (R), green (G) and blue (B) for implementing a color image; and a transparent conductive layer formed on a rear surface of the substrate, on which the color filter layers are formed, and formed in a porous structure having a plurality of holes spaced at predetermined intervals. Therefore, it is possible to shield an electrostatic field due to external static electricity and improve image display quality, thereby increasing high brightness characteristics and readability.
Abstract: Disclosed is a liquid crystal display (LCD) device equipped with a resin black matrix, capable of preventing the light leakage phenomenon by improving an OD (optical density) value of the resin black matrix. The LCD device includes an array substrate formed with a thin film transistor and a pixel electrode, a color filter substrate aligned opposite to the array substrate and formed with a resin black matrix and a color filter, a liquid crystal layer aligned between the array substrate and the color filter substrate, and lower and upper polarizing plates attached to outer surfaces of the array substrate and the color substrate and having transmission axes extending in the same direction. The resin black matrix has a transmission axis perpendicular to the transmission axes of the lower and upper polarizing plates so that the resin black matrix has a polarizing function.
March 3, 2006
Date of Patent:
October 7, 2008
Boe Hydis Technology Co., Ltd.
Sang Hun Han, Hyun Jin Kim, Tae Kyu Park
Abstract: Disclosed is a conductive polarizer for an LCD. The conductive polarizer includes a protective layer, an adhesive layer deposited on the protective layer, a lower support layer deposited on the adhesive layer, a polarizing layer deposited on the lower support layer, an upper support layer deposited on the polarizing layer, and an anti-glare/anti-static layer deposited on the upper support layer. The anti-glare/anti-static layer includes an antimony tin oxide layer formed at an upper surface thereof with a conductive polymer pattern for inducing static electricity and an anti-reflective layer formed on the antimony tin oxide layer including the conductive polymer pattern. Silica particles are distributed over a whole area of the anti-reflective layer.
Abstract: Disclosed is a liquid crystal display device of novel construction, in which a fingerprint recognition device is integrally formed with the liquid crystal display device, thereby minimizing the increase in the price and size of a final product. The liquid crystal display device comprises an image display panel and a fingerprint recognition panel which are integrally formed, wherein the image display panel comprises a scan drive unit which sequentially turns on rows formed in the image display panel for each frame in order to display images, and a data drive unit which outputs data signals to a turned-on row provided in the image display panel, and wherein the fingerprint recognition panel comprises a switch control unit which sequentially turns on rows formed in the fingerprint recognition panel for each frame in order to perform fingerprint recognition, and a reading unit, to which fingerprint information recognized from a turned-on row is outputted.
December 30, 2002
Date of Patent:
August 26, 2008
Boe-Hydis Technology Co., Ltd.
Choong Hoo Kim, Kyu Chang Park, Min Soo Shim
Abstract: Provided is a Fringe Field Switching (FFS) mode Liquid Crystal Display (LCD) In the FFS mode LCD, a lower substrate, an upper substrate and a liquid crystal layer interposed between the substrates are included, each pixel region is defined by gate lines and data lines formed to cross each other on the lower substrate, and switching devices are disposed at intersections of the gate lines and the data lines.
February 5, 2008
August 7, 2008
BOE HYDIS TECHNOLOGY CO., LTD.
Dong Hun Lim, Je Hoon Song, Youn Hak Jeong, Won Hee Lee
Abstract: Disclosed is an LCD with improved image retention for increased reliability and screen quality. The LCD includes lower and upper substrates provided with predetermined patterns, respectively, and positioned to face each other with a predetermined distance; a liquid crystal layer interposed between the lower and upper substrates; and alignment layers positioned between the lower substrate and the liquid crystal layer and the upper substrate and the liquid crystal layer, respectively, to determine the initial arrangement of liquid crystals. The alignment layers have bubbles formed therein to reduce the capacitance generated by the alignment layers and the difference in level of the lower substrate for improved image retention.
Abstract: Disclosed is a position-variable coupling structure for a liquid crystal panel, capable of assembling the liquid crystal panel with an external device by varying a position of a guide groove formed in a top case surrounding the liquid crystal panel according to a position of a guide groove formed in the external device. The guide groove is formed at both lateral portions of the top case surrounding the liquid crystal panel in a length direction of the lateral portions. A bracket is coupled to the top case in such a manner that the bracket moves along the guide groove. A screw is provided to couple the top case with an external device coupling bar.
Abstract: Disclosed is a mobile display module capable of displaying optimal still images or moving pictures depending on characteristics of images to be displayed. The mobile display module includes a graphic memory for storing image data, a data latch unit for latching the image data outputted from the graphic memory, a driver for applying the image data to a liquid crystal panel, a data discrimination unit for determining whether the image data inputted into the graphic memory is still image data or moving picture data, and a gamma voltage generating unit receiving control signals to output first gamma voltage adaptable for the moving picture data to the driver if the image data are the moving picture data and to output second gamma voltage adaptable for the still image data to the driver if the image data are the still image data.
Abstract: Disclosed is a fringe field switching liquid crystal display. The fringe field switching liquid crystal display comprises a black matrix formed on an upper substrate, a pixel electrode formed above a lower substrate and having an edge portion overlapped with the black matrix by a predetermined region, and liquid crystal interposed between the upper substrate and the lower substrate, wherein the edge portion of the pixel electrode has a linear line shape. According to such an edge portion of the pixel electrode, it is possible to stably drive the liquid crystal located at the edge portion of the pixel electrode and also to restore the liquid crystal with rapidity.
Abstract: Disclosed is a liquid crystal display device including a liquid crystal panel having a shift register therein and an interface circuit for adjusting DC and AC levels, for compensating for a loss caused by elements and a resister of the shift register. A driving circuit of the liquid crystal display device includes a clock generation unit outputting a first clock signal as a gate clock signal, a second clock signal as an inverse signal of the first clock signal, and a start pulse, and a DC and AC level amplification unit for amplifying the first and second clock signals and the start pulse after adjusting DC and AC levels of the first and second clock signals and the start pulse, and outputting the first and second clock signals and the start pulse to the shift register.
Abstract: Disclosed is a liquid crystal display capable of improving the bending phenomenon of a liquid crystal panel. The liquid crystal display includes a liquid crystal panel having upper and lower substrates bonded each other with a liquid crystal layer interposed between them; an upper polarization plate attached to the upper surface of the upper substrate; and a lower polarization plate attached to the lower surface of the lower substrate. The upper and lower polarization plates have adhesion layers, respectively, which have different adhesion forces depending on the bending direction of the liquid crystal panel.
Abstract: A method for manufacturing an LCD includes the steps of providing a transparent substrate having a thin film transistor and a protective film successively formed thereon, positioning a shadow mask having a number of openings formed thereon to expose parts on which protrusions are to be formed on top of the substrate, forming protrusions by performing a sputtering process on the substrate using the shadow mask in such a manner that sputtering radicals pass through the openings and are selectively deposited on the protective film, removing the shadow mask, and forming a reflection electrode on the substrate including the protrusions.
Abstract: Disclosed are an apparatus and a method for compensating for an interlaced-scan type video signal for stably displaying the video signal in the LCD panel. An aft part of 264th data of a first field and a fore part of 23rd data of a second field are stored in memories. A present video signal is determined whether the present video signal is a first field signal or a second field signal through an equalizing pulse period. If the present video signal is the first field signal, a fore part of 23rd data is copied to the first data field, and if the present video signal is the second field signal, the aft part of the 263rd data is added to the second field data. In case of a PLA-type video signal, first data represent 23rd data, and final data represent 313rd data.
Abstract: Disclosed is a liquid crystal display device which is capable of adjusting a contrast ratio by transforming and outputting input data of a reference voltage circuit. Analog voltage signal generator stores an input synchronous signal and a plurality of input digital data signal in response to a write enable signal, and converts the stored digital data signal into a plurality of analog voltage signal pairs in response to an output enable signal. A plurality of reference voltage generators divide a boosted source voltage according to the analog voltage signal pairs from the analog voltage signal generator to generate a plurality of reference voltages. A source driver integrated circuit receives the plurality of reference voltages from the plurality of reference voltage generators.
Abstract: Disclosed is a liquid crystal display capable of obtaining a high-quality image without creating flicker and ghost image phenomenon even if Vcom is adjusted, by minimizing variation of refractive index and dielectric constant depending on a temperature through maintaining a liquid crystal layer at a constant temperature. The liquid crystal display comprises a first substrate, a second substrate disposed opposite to the first substrate, an overcoat layer formed on the second substrate, a black matrix layer of a matrix shape formed on the overcoat layer, an ITO layer formed on the black matrix layer, a metal layer formed on the ITO layer, which is formed on the black matrix layer, and a liquid crystal layer interposed between the first substrate and the second substrate.