Patents Examined by (Nancy) Thanh-Nhan P. Nguyen
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Patent number: 8031297Abstract: The present invention provides a color filter comprising a transmission area and reflection area in which at least one color pixel of red, green and blue pixels is formed of the same material, wherein a transparent area having no color layer is formed in a part of the reflection area, at least one sub-area is formed in the transparent area, and the size of the sub-area is 20 ?m or more and 2,000 ?m or less. The present invention also provides a liquid crystal display for both transmission display and reflection display with a cheap manufacturing cost, wherein the difference of chromaticity between the transmission display and reflection display is small, and the surface of the transmission area and reflection area have small step heights.Type: GrantFiled: December 6, 2005Date of Patent: October 4, 2011Assignee: Toray Industries, Inc.Inventors: Hideyuki Kojima, Tetsuo Yamashita, Shigetaka Kasai, Ikumi Hada, Masahiro Yoshioka, Harushi Nonaka, Hiroyuki Sasaki
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Patent number: 8031283Abstract: An active matrix substrate according to one aspect of the present invention is a TFT array substrate including a TFT. The active matrix substrate includes a gate signal line electrically connected to a gate electrode of the TFT, a first insulating film formed above the gate signal line, an auxiliary capacitance electrode formed above the first insulating film and supplied with a common potential, a second insulating film formed above the auxiliary capacitance electrode, a source signal line formed above the second insulating film and electrically connected to a source electrode of the TFT, a third insulating film formed above the source signal line, and a pixel electrode formed above the third insulating film so that the pixel electrode overlaps with a part of the auxiliary capacitance electrode.Type: GrantFiled: January 14, 2009Date of Patent: October 4, 2011Assignee: Mitsubishi Electric CorporationInventors: Toshio Araki, Osamu Miyakawa, Nobuaki Ishiga, Shingo Nagano
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Patent number: 7973900Abstract: An array substrate of a liquid crystal display device includes an insulating substrate, a gate line extending in a first direction on the insulating substrate, a first insulation film which is disposed to cover the gate line, pixel electrodes which are disposed on the first insulation film in respective pixels, a source line which is disposed on the first insulation film and extends between the pixel electrodes along a second direction, a second insulation film which is disposed to cover the pixel electrode and the source line, and a common electrode which is disposed on the second insulation film in a manner to face the pixel electrode of each of the pixels and to face the gate line, and includes a slit which is opposed to the pixel electrode.Type: GrantFiled: May 6, 2009Date of Patent: July 5, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Takamitsu Fujimoto, Shin Morita
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Patent number: 7355661Abstract: A liquid crystal display module includes a light source that generates light. A light guide panel has a first refractive index. Light from the light source propagates through the light guide panel. A low refractive index layer is disposed on the light guide panel and has a second refractive index which is lower than that of the light guide panel. A transmissive liquid crystal display panel is disposed on the upper part of the lower refractive layer.Type: GrantFiled: December 29, 2003Date of Patent: April 8, 2008Assignee: LG. Philips LCD. Co., LtdInventor: Hyung Ki Hong
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Patent number: 7333159Abstract: There is provided an LCD (liquid crystal display device) having a function of temperature maintenance. The LCD includes: a liquid crystal panel having a common heating electrode and a temperature detection unit formed in a predetermined region of the liquid crystal panel, for detecting a temperature of the liquid crystal panel and controlling a current applied to the common heating electrode.Type: GrantFiled: October 7, 2004Date of Patent: February 19, 2008Assignee: LG.Philips LCD Co., Ltd.Inventors: Dong Hoon Lee, Sun Yong Lee
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Patent number: 7310127Abstract: An LCD device in an LCD projector includes a TFT substrate, a counter substrate, an LC layer sandwiched between the TFT substrate and the counter substrate, and a pair of compensation substrates attached onto the outer surfaces of the TFT substrate and the counter substrate far from the LC layer. The compensation substrate has a negative coefficient of thermal expansion (CTE) for compensating the retardation caused by a temperature rise of the TFT substrate and the counter substrate due to irradiation thereof by a light source.Type: GrantFiled: July 29, 2004Date of Patent: December 18, 2007Assignee: NEC CorporationInventors: Yuko Sato, Jin Matsushima, Mitsuhiro Sugimoto, Ken Sumiyoshi
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Patent number: 7304699Abstract: A LCD panel is disclosed that provides improved performance of the frame area that surrounds the panel's display area. The frame area includes a transparent substrate, and color filters provided side-by-side on the transparent substrate, each of the color filters filtering one of at least two colors. The LCD panel is further constituted by a first electrode that counters the color filters, a second electrode that counters the first electrode, and liquid crystal that is inserted between the electrodes. Display spots are suppressed and the frame can appear in a desired color when the panel is in operation.Type: GrantFiled: March 23, 2004Date of Patent: December 4, 2007Assignee: Sharp Kabushiki KaishaInventors: Masahiro Ikeda, Manabu Sawasaki, Hidetoshi Sukenori, Tetsuya Fujikawa, Shiro Hirota
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Patent number: 7298448Abstract: An LCD with a uniform common voltage and a method thereof. The present invention method includes providing a lower substrate, forming scan lines and data lines, then forming common electrodes and common electrode pads electrically connecting the common electrodes. The method also includes providing an upper substrate, forming photo spacers corresponding to each of the electrode pad, then forming a conductive material layer covering each photo spacer, combining the two substrates and connecting the conductive material layer on the photo spacers to the common electrode pads, and sealing the two substrates.Type: GrantFiled: February 24, 2004Date of Patent: November 20, 2007Assignee: AU Optronics Corp.Inventor: Yang-En Wu
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Patent number: 7277153Abstract: An elastic pressure sheet that is good in durability against liquid crystals and the like and is good in slipperiness and a process of manufacturing a liquid crystal display plate using the same are disclosed. The elastic pressure sheet comprises an elastic layer having elastic restoring force; hot-melt adhesive layers formed on the both surfaces of the elastic layer; a barrier layer formed on the outer surface of each of the adhesive layers and capable of preventing bleeding of the hot-melt adhesive layer; and a porous layer comprising ultrahigh molecular weight polyethylene, formed on the outer surface of each of the barrier layers.Type: GrantFiled: May 25, 2004Date of Patent: October 2, 2007Assignee: Nitto Denko CorporationInventors: Hiroyuki Iida, Junichi Moriyama
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Patent number: 7277150Abstract: The invention provides an electro-optical device with a connection terminal unit that can include a first insulating film formed over a substrate and planarized, a first conductive film formed over the first insulating film and transmitting a signal from an external circuit. The connection terminal unit can also include a second insulating film formed over the first insulating film and planarized and an opening formed in an area of the second insulating film that corresponds to the first insulating film and extending to the first conductive film.Type: GrantFiled: April 23, 2004Date of Patent: October 2, 2007Assignee: Seiko Epson CorporationInventor: Masao Murade
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Patent number: 7259811Abstract: A color filter substrate for a liquid crystal display device includes: a substrate; red, green and blue sub-color filters made of a transcription film on the substrate and spaced apart from each other; a black matrix on the red, green and blue sub-color filters; an overcoat layer on the black matrix; and a common electrode overcoat layer.Type: GrantFiled: December 30, 2003Date of Patent: August 21, 2007Assignee: LG.Philips LCD Co., Ltd.Inventor: Sam Yeoul Kim
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Patent number: 7256847Abstract: In view of the above problems of the prior art, the present invention has been made, and an object of the present invention is to provide a board, which is free from coloring, has high color tone quality, can realize a bright display screen, and imposes no significant restriction on the provision of an electric circuit, and a display device comprising the board, and further provides a liquid crystal display board, which is excellent in color contrast between transmission display and reflection display, and a semi-transmission color liquid crystal display device comprising the liquid crystal display board. A board according to the invention comprises a light transparent substrate and a cholesteric layer provided on the substrate and provided with an optical window of a predetermined pattern.Type: GrantFiled: November 11, 2002Date of Patent: August 14, 2007Assignee: Dai Nippon Printing Co., Ltd.Inventor: Keiji Kashima
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Patent number: 7256861Abstract: A liquid crystal display device for minimizing the number of data lines and reducing a line resistance is disclosed. In the device, liquid crystal cells are provided at intersections between gate lines and data lines. At least one thin film transistor is provided at each liquid crystal cell to drive the liquid crystal cells. A source protrusion is provided at an ith horizontal line (wherein i is an integer) and is extended from any one of the thin film transistors. The source protrusion is connected, via at least one gate line, an other horizontal gate line excluding the ith horizontal line. A gate protrusion is extended from the other horizontal gate line in such a manner to be connected with the source protrusion.Type: GrantFiled: June 24, 2004Date of Patent: August 14, 2007Assignee: LG.Philips LCD Co., Ltd.Inventors: Sung Il Park, Kwang Soon Park
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Patent number: 7245331Abstract: The present invention provides a simplifying method for a peeling process as well as peeling and transcribing to a large-size substrate uniformly. A feature of the present invention is to peel a first adhesive and to cure a second adhesive at the same time in a peeling process, thereby to simplify a manufacturing process. In addition, the present invention is to devise the timing of transcribing a peel-off layer in which up to an electrode of a semiconductor are formed to a predetermined substrate. In particular, a feature is that peeling is performed by using a pressure difference in the case that peeling is performed with a state in which plural semiconductor elements are formed on a large-size substrate.Type: GrantFiled: January 8, 2004Date of Patent: July 17, 2007Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Toru Takayama, Junya Maruyama, Yuugo Goto, Yumiko Ohno
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Patent number: 7212259Abstract: A liquid crystal display includes a lower substrate, an upper substrate positioned parallel with the lower substrate, and a plurality of pixel units between the lower substrate and the upper substrate. Each pixel unit includes an upper transparent electrode, a liquid crystal layer, a lower transparent electrode, and a color filter with recess structures.Type: GrantFiled: September 30, 2003Date of Patent: May 1, 2007Assignee: Chi Mei Optoelectronics CorporationInventor: Jui-Mei Hsu
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Patent number: 7206050Abstract: An in-plane switching (IPS) type LCD and method for fabricating the same that solves problems of aperture loss and luminance reduction resulting from a bonding margin of upper and lower substrates, and securing a picture quality by relative increase of the storage capacitance Cst.Type: GrantFiled: June 14, 2004Date of Patent: April 17, 2007Assignee: LG.Philips LCD Co., LtdInventor: Gee Sung Chae
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Patent number: 7196747Abstract: Provided is a flat panel display in which no stripes appear on a screen, thereby improving image quality. The flat panel display has a matrix-type array of sub-pixels, each of which includes a driving thin film transistor, a first electrode driven by the driving thin film transistor, and a second electrode driving a light emission unit together with the first electrode. The driving thin film transistor includes semiconductor channels which are derived from a semiconductor layer. Heterogeneous straight lines are separated from each other on the semiconductor layer. An imaginary line connecting the semiconductor channels of one column is not parallel to the heterogeneous straight lines.Type: GrantFiled: January 12, 2004Date of Patent: March 27, 2007Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Bon Koo, Ji-Yong Park, Sang Il Park, Hye-Dong Kim
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Patent number: 7184108Abstract: A liquid crystal display is provided, which includes: a pair of first and second signal lines transmitting select pulses having opposite polarity; a third signal line transmitting data voltages; first and second field generating electrodes separated from each other with a gap; and a plurality of diodes connected between the first and the second signal lines and the first and the second field generating electrodes and providing at least two different resistances.Type: GrantFiled: March 26, 2004Date of Patent: February 27, 2007Assignee: Samsung Electronics Co., Ltd.Inventor: Jang-Kun Song
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Patent number: 7164459Abstract: A method for fabricating a liquid crystal display device, which includes a liquid crystal layer, a pair of electrodes for use to apply a voltage to the liquid crystal layer, and at least one inorganic alignment film. The inorganic alignment film makes direct contact with the liquid crystal layer and is made of a crystalline conductive film where crystal grains are oriented in a predetermined direction preferentially.Type: GrantFiled: April 20, 2005Date of Patent: January 16, 2007Assignee: Sharp Kabushiki KaishaInventor: Noriaki Ohnishi
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Patent number: 7164457Abstract: A liquid crystal display comprises: first and second panels facing each other; a compensation film and a first polarizer disposed on the first panel, the compensation film having phase retardation characteristics; and a second polarizer having a supporting film disposed on the second panel, the supporting film having phase retardation characteristics. In alternative embodiments, a supporting film is used in place of the compensation film. The supporting film has retardation characteristics.Type: GrantFiled: November 12, 2003Date of Patent: January 16, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Kyeong-Hyeon Kim, Jang-Kun Song