Reflector Patents (Class 349/113)
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Publication number: 20130300960Abstract: An automatic darkening and glare reducing liquid crystal mirror for vehicles is disclosed. The mirror has a front substrate (101) of transparent glass or plastic and a back substrate (109) of glass or plastic with a highly reflective or transflective mirrored coating (108). The front and back substrates are spaced apart a small distance to define a liquid crystal cell between the substrates and a liquid crystal fluid (106) incorporating dichroic dyes is contained within the liquid crystal cell. A conductive thin film (102) is applied onto the interior surface of the front substrate and the reflective or transflective coating (108) of the back substrate also is conductive. An alignment compound is deposited on the conductive thin film (102) and on the reflective or transflective coating (108) and the alignment compound bounds the liquid crystal cell.Type: ApplicationFiled: March 27, 2013Publication date: November 14, 2013Inventor: Glarenix USA, LLC
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Patent number: 8570463Abstract: A liquid crystal display device includes: a liquid crystal panel; a first polarizing film and a second polarizing film on a bottom surface and a top surface, respectively, of the liquid crystal panel; a backlight unit below the first polarizing film; and a titanium oxide film on the second polarizing film and that transmits one of right-handed circularly polarized light and left-handed circularly polarized light and reflects the other, with a predetermined wavelength, of the right-handed circularly polarized light and the left-handed circularly polarized light.Type: GrantFiled: November 23, 2010Date of Patent: October 29, 2013Assignee: LG Display Co., Ltd.Inventors: Seung-Ho Park, Chul Nam, Hyong-Jong Choi
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Patent number: 8570466Abstract: There are provided a thin film transistor substrate for transflective liquid crystal display device (LCD) and a manufacturing method thereof, which can reduce manufacturing cost and simplifying manufacturing processes. In the method, a thin film transistor is formed on a reflection region of a device substrate defined by the reflection region and a transmission region. A passivation layer is formed on the thin film transistor so as to expose a drain electrode of the thin film transistor and to cover the thin film transistor. A pixel electrode is formed on the transmission and reflection regions. The pixel electrode has a structure of a first pixel electrode electrically connected to the drain electrode and a second pixel electrode formed to have an embossed pattern on the first pixel electrode. A reflective layer is formed on the second electrode pixel having the embossed pattern on the reflection region.Type: GrantFiled: December 29, 2010Date of Patent: October 29, 2013Assignee: Samsung Display Co., Ltd.Inventors: Myung-Wook Choi, Sang-Woo Park, Sung-Wook Kim, Dae-Seung Yun, Eun-Young Lee
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Patent number: 8570310Abstract: A display panel have a transmissive region and a reflective region. The display panel comprises a first plate, a second plate opposite to the first plate and a display medium. The first plate comprises a first substrate, a scan line, a data line, an active device, a common electrode, a pixel electrode and a dielectric layer. The active device is electrically connected to the scan line and the data line. The pixel electrode is electrically connected to the active device and is electrically insulated from the common electrode. The pixel electrode has slits exposing the common electrode. The dielectric layer is located between the common electrode and the pixel electrode and has first openings in the reflective region. The second plate is opposite to the first plate. The display medium is located between the first plate and the second plate.Type: GrantFiled: April 7, 2011Date of Patent: October 29, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Jiun-Jr Huang, Chin-Hai Huang, Hui-Mei Hu
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Publication number: 20130278862Abstract: A liquid crystal display device includes a plurality of pixel units. The pixel units include a reflection region and a transmission region. The space between the reflection region and the transmission region of adjacent pixel units is not more than 1 ?m in the direction parallel to the substrate. The gap between adjacent pixel units is utilized. As a result, the utilization ratio of display region of the liquid crystal display device is improved, and the effective area of the reflection region is increased. Accordingly, the display quality of the reflection region is improved without decreasing the transmission region, or the effective area of the transmission region is increased and the display quality of the transmission region is improved without decreasing the reflection region. Consequently, the aperture ratio of the liquid crystal display device is effectively improved.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Inventors: Sitao Huo, Jun Ma
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Publication number: 20130278873Abstract: It is an object of the present invention to provide a liquid crystal display device with a good display quality, and a manufacturing method of such a liquid crystal display device. A liquid crystal display device (10) includes a liquid crystal display panel (11) with a display surface (20) defining a recessed curved surface having curvature of 1/500- 1/50 (1/mm), and with a scattering section which is arranged parallel to the display surface (20), which defines a recessed curved surface having curvature of 1/500- 1/50 (1/mm), and in which a plurality of elongated regions (A-C) having different haze values are arranged in parallel with each other from a middle section of the curved surface toward both end sections in the curving direction. The haze values of the plurality of elongated regions (A-C) arranged in parallel with each other vary in a step-wise manner from the middle section of the curved surface toward the both end sections in the curving direction.Type: ApplicationFiled: June 21, 2013Publication date: October 24, 2013Inventor: Hiromi ENOMOTO
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Publication number: 20130271711Abstract: The present invention provides a method for forming a reflector and a reflective LCD manufactured with the method. The method for forming reflector includes (1) providing metal powder and gold varnish, the metal powder being one or more than one selected from aluminum powder, copper powder, zinc powder; (2) mixing the metal powder and the gold varnish to form slurry; (3) providing a substrate and coating or printing the slurry on the substrate; and (4) baking the substrate on which the slurry coated or printed at a temperature of 60-80° C. for a period of 3-5 minutes to have the slurry forming a reflector on the substrate. The present invention forms a reflector on a substrate by mixing metal powder and gold varnish together to form slurry so as to improve homogeneity of scattered reflection of light by the reflector so formed.Type: ApplicationFiled: April 25, 2012Publication date: October 17, 2013Applicant: Shenzhen China Star Optoelectronics Technology Co, LTD.Inventor: Hao Kou
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Patent number: 8558775Abstract: A liquid crystal display having reduced power consumption. The liquid crystal display includes a liquid crystal display panel having a plurality of pixels and a plurality of pixel memories. A pixel voltage is stored in a pixel memory in an on screen display (OSD) region of the liquid crystal display panel for displaying a still image for a long period of time and driving a liquid crystal cell by the stored pixel voltage. Also, the power consumption of the liquid crystal display can be reduced by using a NAND gate or a NOR gate as a circuit element for alternating a voltage between low level and high level so as to store a pixel voltage in a pixel memory of the liquid crystal display.Type: GrantFiled: January 5, 2012Date of Patent: October 15, 2013Assignee: Samsung Display Co., Ltd.Inventor: Junghwan Kim
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Patent number: 8558770Abstract: A liquid crystal display element accommodates a reflective portion provided with a concavo-convex reflecting pixel electrode for reflecting incident light from the display face side and displaying information, and a transmissive portion provided with a transmissive pixel electrode for transmitting light that is output from the backlight. The voltages applied to the reflective portion and the transmissive portion are controlled independently. The reflective portion and the transmissive portion have wide viewing angle characteristics. In a wide viewing angle region greater than a certain angle, the luminance of the reflective portion is greater than the luminance of the transmissive portion, whereas in other angle regions the luminance of the transmissive portion is greater than the luminance of the reflective portion.Type: GrantFiled: December 21, 2006Date of Patent: October 15, 2013Assignee: NLT Technologies, Ltd.Inventors: Jin Matsushima, Hiroshi Okumura, Ken Sumiyoshi
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Patent number: 8553184Abstract: An array substrate, comprising a substrate and a data line and a gate line formed on the substrate. The data line and gate line cross each other to define a pixel region and the pixel region comprises a reflective region and a transparent region. The pixel region further comprises: a pixel electrode, formed with a transparent conductive film on the substrate and provided at least in the transparent region; a thin film transistor, formed on the substrate, the transparent conductive film being retained below the gate line and a gate electrode of the thin film transistor; a planarization film, covering the thin film transistor on the substrate; and a reflective layer, formed on the planarization film and disposed in the reflective region of the pixel region. A method of manufacturing the array substrate is provided.Type: GrantFiled: February 9, 2010Date of Patent: October 8, 2013Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.Inventor: Xuesong Gao
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Patent number: 8547508Abstract: A liquid crystal display device comprises an optically diffusively reflecting layer arranged to maximize utilization of incident light. The reflecting layer contains a thin metallic film with projections (14a) each having an unsymmetrical cross section to centralise reflected light in a specific azimuth direction (y). The range of viewing angles (?x-z, ?y-z) into which a substantial portion of the incident light is reflected is broader in the specific azimuth direction (y) than in another direction (x). The director (5d) of liquid crystal molecules initiallly lies in a plane (y-z) parallel to the specific azimuth direction (y) to achieve retardation self-compensation.Type: GrantFiled: December 11, 2003Date of Patent: October 1, 2013Assignee: TPO Hong Kong Holding LimitedInventor: Satoru Takahashi
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Patent number: 8547509Abstract: A transflective type LCD device and a method of fabricating the same are discussed. According to an embodiment of the present invention, the transflective type LCD device includes a plurality of gate lines and a plurality of data lines formed on a first substrate to define at least one pixel region having a reflection area and a transmission area, a thin film transistor formed on a crossing point of the plurality of gate lines and the plurality of data lines, a first insulating layer formed on the first substrate including the thin film transistor, a pixel electrode formed on the first insulating layer and electrically connected with the thin film transistor, a second insulating layer formed corresponding to the reflection area on the pixel electrode and having a predetermined dielectric constant, and a reflection plate formed on the second insulating layer.Type: GrantFiled: December 29, 2005Date of Patent: October 1, 2013Assignee: LG Display Co., Ltd.Inventors: JongWon Moon, SuSeok Choi, SangHo Choi
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Patent number: 8547503Abstract: By providing a pixel electrode layer in a center of a liquid crystal layer sandwiched between a first common electrode layer and a second common electrode layer, a structure in which the following two optical elements are stacked can be obtained: a first liquid crystal element including the first common electrode layer, the liquid crystal layer, and the pixel electrode layer; and a second liquid crystal element including the pixel electrode layer, the liquid crystal layer, and the second common electrode layer.Type: GrantFiled: May 11, 2011Date of Patent: October 1, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Daisuke Kubota, Akio Yamashita, Shuji Fukai, Yoshiharu Hirakata
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Publication number: 20130250219Abstract: A liquid crystal on silicon display panel and a method for manufacturing the same are disclosed. The method includes the following steps. First, a semiconductor substrate having a pixel region with at least one first top metal pattern and a first anti-reflection coating structure substantially disposed thereon and a circuit region with is at least one second top metal pattern and a second anti-reflection coating structure substantially disposed thereon is provided. Moreover, the circuit region surrounds the pixel region. Next, the first anti-reflection coating structure is removed. Afterward, a dielectric layer is formed on the semiconductor substrate and covering the first top metal pattern. Then, a passivation layer is formed on the dielectric layer. After that, a portion of the passivation layer and a portion of the second anti-reflection coating structure thereunder are removed to form an opening exposing a portion of the second top metal pattern.Type: ApplicationFiled: March 23, 2012Publication date: September 26, 2013Applicant: UNITED MICROELECTRONICS CORPORATIONInventor: Ching-Huei TSAI
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Publication number: 20130242242Abstract: A liquid crystal display panel (1) includes: a flexible first plastic substrate (11); a TFT substrate (10) having a terminal region (T) on the first plastic substrate (11) where a terminal (27) and a wire electrode (28) are formed; a CF substrate (20) facing the TFT substrate (10) and having a flexible second plastic substrate (13); and a liquid crystal layer (25) provided between the TFT substrate (10) and the CF substrate (20). The liquid crystal display panel (1) includes a metal layer (15) provided on a surface of the second plastic substrate (13) which faces the terminal region (T) to reflect laser light, and a protection film (16) sandwiched between the TFT substrate (10) and the CF substrate (20) to cover the metal layer (15).Type: ApplicationFiled: November 22, 2011Publication date: September 19, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Shinsuke Saida
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Publication number: 20130235313Abstract: A liquid crystal display which is a reflective liquid crystal display displaying an image by controlling reflectance of ambient light includes: a front substrate; a rear substrate; and a liquid crystal material layer disposed between the front substrate and the rear substrate, wherein the rear substrate is provided with a plurality of reflective electrodes formed on a surface side opposite to the liquid crystal material layer, and a specular light reflecting member reflecting ambient light which is directed to a rear surface side of the rear substrate through a gap between the adjacent reflective electrodes toward the front substrate side.Type: ApplicationFiled: January 14, 2013Publication date: September 12, 2013Applicant: JAPAN DISPLAY WEST INC.Inventors: Hayato Kurasawa, Masashi Mitsui
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Patent number: 8531629Abstract: According to example embodiments, a reflective display device includes a plurality of pixel units. Each of the plurality of pixel units may include a reflective plate having at least one concave reflective surface, a first electrode on the reflective plate, a second electrode separate from the first electrode, at least one light-absorbing member corresponding to the at least one concave reflective surface, and a polymer dispersed liquid crystal PDLC layer between the first electrode and the second electrode. The PDLC layer includes a polymer and liquid crystals. The light-absorbing member may be at a focus position of the at least one concave reflective surface.Type: GrantFiled: September 2, 2011Date of Patent: September 10, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Gae-hwang Lee, Kyu-young Hwang, Jae-eun Jung
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Publication number: 20130229603Abstract: An anisotropic scatterer is configured to allow a scattering characteristic of light in a display region of a display device to have an angle dependence, and is configured to change the scattering characteristic of the light continuously in an in-plane direction.Type: ApplicationFiled: January 10, 2013Publication date: September 5, 2013Applicants: JAPAN DISPLAY WEST INC., TOMOEGAWA CO., LTD.Inventors: Masaya Tamaki, Tatsuya Yata, Yoko Fukunaga, Masashi Mitsui, Hiroto Katagiri, Masahide Sugiyama
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Patent number: 8525968Abstract: In a liquid crystal substrate in which a matrix of reflecting electrodes is formed on a substrate, a transistor is formed corresponding to each reflective electrode and a voltage is applied to the reflective electrode through the transistor. A silicon oxide film having a thickness of 500 to 2,000 angstroms is used as the passivation film and the thickness is set to a value in response to the wavelength of the incident light to maintain a substantially constant reflectance.Type: GrantFiled: December 12, 2012Date of Patent: September 3, 2013Assignee: Seiko Epson CorporationInventor: Masahiro Yasukawa
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Publication number: 20130222749Abstract: A reflective liquid crystal display device includes an upper substrate, a lower substrate, a plurality of isolation structures, and a plurality of photoreactive liquid crystals. The lower substrate is disposed opposite to the upper substrate. The isolation structures are disposed between the upper substrate and the lower substrate for forming a plurality of channels between the upper substrate and the lower substrate. Each of the photoreactive liquid crystals is disposed in each of the channels. The upper substrate is used to block ultraviolet.Type: ApplicationFiled: February 27, 2013Publication date: August 29, 2013Applicants: WINTEK CORPORATION, DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY CO., LTD.Inventors: DONGGUAN MASSTOP LIQUID CRYSTAL DISPLAY CO., LTD, WINTEK CORPORATION
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Publication number: 20130208201Abstract: A display device (100A) according to the present invention includes a first substrate (11), a second substrate (21), and a light modulating layer (17) provided between the first substrate (11) and the second substrate (21). The first substrate (11) or the second substrate (21) has a layer (22) provided thereon containing a photochromic compound.Type: ApplicationFiled: October 6, 2011Publication date: August 15, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Eiji Satoh, Akio Miyata, Kazuhiro Deguchi
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Patent number: 8497958Abstract: Example embodiment are directed to a reflective display device including a polymer-dispersed liquid crystal (PDLC) layer between a first substrate and a second substrate, and a mirror reflection plate on the first substrate.Type: GrantFiled: February 1, 2011Date of Patent: July 30, 2013Assignees: Samsung Electronics Co., Ltd., Konkuk University Industrial Cooperation Corp.Inventors: Jae-eun Jang, Jae-eun Jung, Gae-hwang Lee, Young-Jae Jeon, Jin Woo Lee
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Patent number: 8493520Abstract: An optical system is provided for use with a display device to convert a flat image from the display device to a non-flat image. The optical system comprises first and second spaced-apart partial reflectors, at least one of which is non-flat. The reflectors, together with polarization optics, provide a light path such that light from the display is at least partially transmitted by the first reflector, partially reflected by the second reflector, partially reflected by the first reflector and partially transmitted by the second reflector so that a viewer perceives a non-flat, for example curved, image. Light which does not follow the light path is prevented from leaving the optical system.Type: GrantFiled: May 30, 2008Date of Patent: July 23, 2013Assignee: Sharp Kabushiki KaishaInventors: Gregory Gay, Harry Garth Walton
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Patent number: 8488086Abstract: A method for producing a light reflecting structure in a transflective or reflective liquid crystal display uses one or two masks for masking a photoresist layer in a back-side exposing process. The pattern on the masks is designed to produce rod-like structures or crevices and holes on exposed and developed photoresist layer. After the exposed photoresist is developed, a heat treatment process or a UV curing process is used to soften the photoresist layer so that the reshaped surface is more or less contiguous but uneven. A reflective coating is then deposited on the uneven surface. One or more intermediate layers can be made between the masks, between the lower mask and the substrate, and between the upper masks and the photoresist layers. The masks and the intermediate layers can be made in conjunction with the fabrication of the liquid crystal display panel.Type: GrantFiled: August 2, 2011Date of Patent: July 16, 2013Assignee: Au Optronics CorporationInventors: Hsiang-Lin Lin, Chun-Chieh Tsao
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Publication number: 20130176519Abstract: A liquid crystal display panel (1) includes: touch switches (50) each constituted by a switch electrode (52) of an active substrate (12) and a set of switch PS electrodes (51) of a counter substrate (11) so as to make conduct electricity when the active substrate (12) or the counter substrate (11) is pressed; and reflection coatings (38 and 39) which reflect infrared light emitted from a Fourier transform infrared spectrophotometer, the reflection coatings (38 and 39) being provided either in the active substrate (12) or the counter substrate (11) with the switch electrode (52) or the set of switch PS electrodes (51) stacked on a corresponding one of the reflection coatings (38 and 39). This provides a technique for efficiently determining the presence or absence of an alignment film on any touch switch provided inside of a liquid crystal display panel having the function of an in-cell touch sensor.Type: ApplicationFiled: September 22, 2011Publication date: July 11, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Takafumi Hayama, Shinji Yamagishi
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Patent number: 8482702Abstract: A liquid crystal display device includes a liquid crystal layer 1 whose state is switchable between a light-transmitting state and a light-scattering state, a front substrate 3 and a rear substrate 2 between which the liquid crystal layer 1 is held, a pair of electrodes 4, 8 between which the liquid crystal layer 1 is interposed and which are configured to apply a voltage across the liquid crystal layer 1, and first and second alignment films 13, 12 respectively provided between the liquid crystal layer 1 and the front substrate 3 and between the liquid crystal layer 1 and the rear substrate 2. The liquid crystal layer 1 includes, in each of the pixels, a continuous wall 10, a plurality of small sections 14 separated by the wall 10, and a plurality of liquid crystal regions 11, each of which is formed in any one of the plurality of small sections 14.Type: GrantFiled: August 21, 2009Date of Patent: July 9, 2013Assignee: Sharp Kabushiki KaishaInventors: Yasushi Asaoka, Eiji Satoh, Kiyoshi Minoura, Sayuri Fujiwara
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Patent number: 8480282Abstract: A reflective plate includes a high heat conductivity material having a first heat conductivity and a reflective material having a second heat conductivity on the high heat conductivity material, wherein the first heat conductivity of the high heat conductivity material is greater than the second heat conductivity of the reflective material.Type: GrantFiled: August 30, 2006Date of Patent: July 9, 2013Assignee: LG Display Co., Ltd.Inventors: Myong Gi Jang, Gi Bin Kim, Tae Woo Kim
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Patent number: 8477271Abstract: A liquid crystal display device includes a first substrate having a plurality of pixels defined thereon, each of which is provided with a reflection layer, a second substrate disposed opposite the first substrate, and a display surface which displays images by the pixels, where the display surface is curved in one direction, and each of the reflection layers is formed so that a reflectance of light reflected from each of the reflection layers in a direction normal to the display surface is higher in both edge portions in a curvature direction than in a middle portion in the curvature direction on the display surface.Type: GrantFiled: August 5, 2009Date of Patent: July 2, 2013Assignee: Sharp Kabushiki KaishaInventor: Hiromi Enomoto
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Patent number: 8471979Abstract: The present invention discloses a backlight module and a LCD using the same. Said backlight module comprises a light guide plate, a reflection sheet and a backplane, wherein said reflection sheet is arranged under the light guide plate; said backplane is arranged under the reflection sheet and partially supports the reflection sheet; and said reflection sheet is bent to form one or more supporting ribs for supporting the backplane to prevent the reflection sheet from drooping. The present invention solves the problem that the reflection sheet is affected by heat and then is easy to droop, by bending the reflection sheet of the backlight module to form the one or more supporting ribs for supporting the reflection sheet, and has the advantages of low cost and no negative influence on other components and system structure of the backlight module.Type: GrantFiled: August 19, 2011Date of Patent: June 25, 2013Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Tian Zhang
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Patent number: 8462299Abstract: A reflection type liquid crystal display device comprises a glass substrate provided with a transparent electrode, and an Si driving circuit substrate provided with a light reflecting electrode, the glass substrate and the Si driving circuit substrate being disposed opposite to each other so that the transparent electrode and the light reflecting electrode are opposed to each other, with a liquid crystal layer composed of vertically aligned liquid crystals being interposed therebetween, wherein at least the condition of d·?n·|??|2?5 is satisfied, where d (?m) is the thickness of the liquid crystal layer, ?n is the refractive index anisotropy of the vertically aligned liquid crystals, and |??| is the magnitude of the dielectric constant anisotropy of the vertically aligned liquid crystals.Type: GrantFiled: March 1, 2005Date of Patent: June 11, 2013Assignee: Sony CorporationInventors: Tadaaki Isozaki, Shunichi Hashimoto
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Patent number: 8455160Abstract: A color filter of a liquid crystal on silicon (LCOS) display device is disclosed, including a substrate including a plurality of pixel regions wherein each pixel region includes a first color dot, a second color dot and a third color dot; and a first color resist, a second color resist and a third color resist disposed in the first color dot, the second color dot and the third color dot on the substrate, wherein each of the first color resist, the second color resist and the third color resist includes at least one opening.Type: GrantFiled: December 9, 2010Date of Patent: June 4, 2013Assignee: Himax Technologies LimitedInventors: Ho Tu, Yi-Hua Wang
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Patent number: 8456596Abstract: A transparent display device includes a liquid crystal display (LCD) module and a transparent reflector. The LCD module includes an LCD panel having a liquid crystal layer, a light source providing light to the LCD panel, and a polarizing plate disposed between the light source and the LCD panel to polarize light from the light source. The transparent reflector and the LCD module are spaced apart. The transparent reflector displays the image by reflecting the image provided from the LCD panel. The transparency of the transparent reflector may be controlled, and the transparent reflector may have a curved shape.Type: GrantFiled: November 30, 2010Date of Patent: June 4, 2013Assignee: Samsung Display Co., Ltd.Inventors: Tae-Jong Jun, Jong-Seo Lee, Woo-Young Cheon, Joo-Young Lee, Soo-Lin Kim, Jung-Suk Han
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Publication number: 20130135568Abstract: A cholesteric liquid crystal display device (10) comprises a layer of cholesteric liquid crystal material (11) supported by at least one substrate (13; electrode layers (14,15) on opposite sides of the layer of cholesteric liquid crystal material (11); and a light absorptive or reflective layer (17) on the rear side of the layer of cholesteric liquid crystal material (11). To provide non-uniform reflection of light, there is a layer (18) of reflective flakes (19) on the front side of the light absorptive or reflective layer (17), or the reflective layer is shaped to be non-planar.Type: ApplicationFiled: June 8, 2011Publication date: May 30, 2013Inventors: David Coates, Tony Orlando Alkins
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Patent number: 8445911Abstract: An active device array substrate including a substrate, scan lines, data lines, active devices, a first dielectric layer, a common line, a second dielectric layer, a patterned conductive layer, a third dielectric layer, and pixel electrodes is provided. At least a part of the active devices are electrically connected to the scan lines and the data lines. The first dielectric layer covers the scan lines, the data lines and the active devices. The common line is disposed on the first dielectric layer. The second dielectric layer covers the common line and the first dielectric layer. The patterned conductive layer is disposed on the second dielectric layer. The third dielectric layer covers the patterned conductive layer and the second dielectric layer. The pixel electrodes are disposed on the third dielectric layer and electrically connected to the patterned conductive layer and the active devices.Type: GrantFiled: April 30, 2010Date of Patent: May 21, 2013Assignee: Au Optronics CorporationInventors: Ching-Jung Yang, Ke-Chih Chang, Kuo-Yu Huang, Yu-Cheng Chen
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Patent number: 8446550Abstract: An automatic darkening liquid crystal mirror for vehicles, the mirror having a transparent front substrate and a back substrate with a reflective or transflective mirrored coating. The front and back substrates are spaced apart to define a liquid crystal cell between the substrates that is filled with a liquid crystal fluid incorporating a dichroic dye. A conductive thin film is applied onto the interior surface of the front substrate, and the mirrored coating of the back substrate also is conductive. An alignment compound is deposited on opposite sides of and bounding the liquid crystal cell. An electronic control circuit is adapted to apply selectively a voltage signal to the conductive think film and the conductive mirrored coating to affect the transmittance of the liquid crystal fluid, and thereby the darkness of the mirror, in response to light intensity sensed by a headlight sensor coupled to the electronic control circuit.Type: GrantFiled: December 23, 2008Date of Patent: May 21, 2013Assignee: Glarenix USA, LLCInventors: Walter Y. Wen, Robin Hines, Chai T. Chang
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Patent number: 8441603Abstract: A liquid crystal display structure includes a first substrate panel, a second substrate panel, and a liquid crystal layer between the first substrate panel and the second substrate panel. Pixel portions, formed by respective electrodes for applying a voltage to the liquid crystal layer, include a transparent substrate panel, an organic insulating layer, a patterned reflective layer, a dielectric layer, a transparent conductive layer and a thin film transistor. The organic insulating layer is formed over the transparent substrate panel. The patterned reflective layer is formed over the organic insulating layer exposing a portion of the organic insulating layer. The dielectric layer is formed over the patterned reflective layer. The dielectric layer has a smooth upper surface. The transparent conductive layer is over the dielectric layer. The transparent conductive layer is connected to the thin film transistor so that the thin film transistor can drive the transparent conductive electrode.Type: GrantFiled: August 30, 2007Date of Patent: May 14, 2013Assignee: AU Optronics CorporationInventors: Fang-Chen Luo, Wei-Chih Chang
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Patent number: 8427620Abstract: A liquid crystal display device of IPS mode includes an array of pixels arranged in a matrix pattern by crossing a plurality of video signal lines and a plurality of scanning signal lines each other. Each of the pixels is provided with at least a switching element. A transparent insulating film is provided on both signal lines, and a plurality of pixel electrodes, common electrodes and common lines are provided on the transparent insulating film. The common lines are formed in a grid-shaped pattern such that a first group of the common lines is made of a first conductor having lower reflectivity against optical light than that of metal while a second group of the common lines is made of a second conductor including a metal layer such that the first group and the second group are crossing each other along the video signal lines and the scanning signal lines.Type: GrantFiled: February 16, 2010Date of Patent: April 23, 2013Assignee: NLT Technologies, Ltd.Inventors: Soichi Saito, Shinya Niioka, Masayuki Jumonji, Hiroshi Tanabe, Masamichi Shimoda
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Patent number: 8421967Abstract: Transflective-type and reflection-type liquid crystal display devices having a high image quality are provided at low cost. A liquid crystal display device according to the present invention is a liquid crystal display device having a reflection region for reflecting incident light toward a display surface, the reflection region including a Cs metal layer (metal layer), a gate insulating layer formed on the Cs metal layer, a semiconductor layer formed on the gate insulating layer, and a reflective layer formed on the semiconductor layer. On the surface of the reflective layer, a first recess and a second recess located inside the first recess are formed. The Cs metal layer and the semiconductor layer each have an aperture, and one of the first recess and the second recess is constituted by the aperture of the Cs metal layer, and the other is constituted by the aperture of the semiconductor layer.Type: GrantFiled: October 25, 2007Date of Patent: April 16, 2013Assignee: Sharp Kabushiki KaishaInventors: Tetsuo Kikuchi, Hideki Kitagawa, Hajime Imai, Yoshihito Hara
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Patent number: 8422112Abstract: A display system 1 is composed of a ghost image reducing device 100 and an image device 10. The ghost image reducing device 100 comprises an image reflecting element 110 and a polarizing element 120. The image reflecting element 110 includes a substrate 112 and a phase modulating element 114 which is adjacent to the substrate 112 and has a reflecting surface 114a. The image device 10 generates a polarized image light P1 which is received by the reflecting surface 114a. Then, a portion of the polarized image light P1 is reflected by the reflecting surface 114a for producing a first reflecting polarized image light P2, another portion of the polarized light P1 is projected into the phase modulating element 114 and reflected by the substrate 112 for producing a second reflecting polarized image light S2 whose polarizing direction is different from that of the first reflecting polarized image light P2.Type: GrantFiled: February 4, 2008Date of Patent: April 16, 2013Assignee: Industrial Technology Research InstituteInventors: Yu-Tang Li, Wan-Chien Huang, Chun-Chuan Lin, Hsin-Hsiang Lo
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Patent number: 8421969Abstract: An electrooptic device includes a first substrate, a second substrate which is arranged so as to be opposed to the first substrate, a plurality of pixel electrodes which are provided between the first substrate and the second substrate, a dielectric multilayer film which is formed so as to cover the plurality of pixel electrodes and in which a plurality of dielectric layers are laminated, and a sealing member which is arranged around a pixel region on which the plurality of pixel electrodes are provided and bonds the first substrate and the second substrate to each other. In the electrooptic device, at least one dielectric layer of the plurality of dielectric layers is formed so as not to overlap with a sealing region on the first substrate, on which the sealing member is arranged.Type: GrantFiled: April 1, 2011Date of Patent: April 16, 2013Assignee: Seiko Epson CorporationInventor: Ayae Sawado
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Patent number: 8421952Abstract: A backlight for a display includes a plurality of illumination modules, each illumination module including a light source and a reflective member. A portion of the reflective member is disposed over the light source. A liquid crystal display panel is disposed over the plurality of illumination modules. The reflective member is configured such that a majority of light from the light source is directed parallel to the liquid crystal display panel, to provide uniform illumination of the liquid crystal display panel. In some embodiments, the light source is at least one semiconductor light emitting diode.Type: GrantFiled: December 3, 2007Date of Patent: April 16, 2013Assignee: Philips Lumileds Lighting Company, LLCInventors: Gerard Harbers, Takaaki Yagi, Johannes W. H. S. Smitt, Serge J. Bierhuizen
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Patent number: 8416378Abstract: An LCD device comprises a liquid crystal display panel. The liquid crystal display panel comprises a first substrate that has a plurality of pixels divided into a reflective portion and a transmissive portion therein, respectively. The liquid crystal display panel further comprises a second substrate that faces the first substrate, and a liquid crystal layer between the first substrate and the second substrate. Light introduced into the reflective portion of the first substrate through the second substrate is reflected to the second substrate from the reflective portion, and light introduced into the transmissive portion of the first substrate transmits the first substrate.Type: GrantFiled: December 31, 2007Date of Patent: April 9, 2013Assignee: LG Display Co., Ltd.Inventor: Do-Sung Kim
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Patent number: 8409789Abstract: A large mask with random apertures may be formed by forming a smaller mask (also called a cell mask) with a random pattern of transmissive apertures which is then repeatedly replicated to create the large mask. The random pattern may be created by perturbing the aperture locations by a small amount or the apertures may be randomly placed within the cell mask provided certain criteria are met. Alternatively, a large mask with a random pattern of transmissive apertures may be formed without using a cell mask. This large mask may be used to fabricate diffusers and other devices that do not suffer from the interference, diffraction and other optical effects common in devices having structures that are non-randomly patterned.Type: GrantFiled: August 10, 2010Date of Patent: April 2, 2013Inventor: Zhijian Lu
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Publication number: 20130076994Abstract: A liquid crystal display device includes: a transparent electrode substrate including a transparent substrate and a transparent electrode, the transparent electrode being formed on one surface of the transparent substrate; a liquid crystal layer; and a pixel electrode substrate including a first layer and a second layer in this order, the first layer including a plurality of pixel electrodes that are located in a region opposed to the transparent electrode with the liquid crystal layer in between, and a first conductive film that is located in a region other than the region opposed to the transparent electrode with the liquid crystal layer in between, the second layer including a second conducive film that is located in a region overlapping the first conductive film. The first conductive film or the second conducive film or both are electrically isolated.Type: ApplicationFiled: September 10, 2012Publication date: March 28, 2013Applicant: Sony CorporationInventor: Hideaki Kawaura
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Publication number: 20130070189Abstract: A liquid crystal display (LCD) device is disclosed. The LCD device comprises an LCD panel, a flexible printed circuit board (FPCB) disposed at a side of the LCD panel, and a chip disposed on the FPCB to drive the LCD panel. The LCD device further comprises a heat dissipating element, and the chip is covered by the heat dissipating element so that heat generated by the chip is dissipated via the heat dissipating element. Thereby, damage to the chip due to an overhigh temperature can be avoided, thus prolonging the service life of the LCD device.Type: ApplicationFiled: September 29, 2011Publication date: March 21, 2013Applicant: Shenzhen china Star Optoelectronics Technology Co. Ltd.Inventor: Quan Li
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Publication number: 20130070190Abstract: A display device uses a multilayer film (104), which reflects (red) light having wavelengths between about 600 and 800 nm at a 60 degree angle of incidence (114), to protect a liquid christal panel (102) from heat and sun damage. The film (104) transmits light of the visible band with a wavelength between about 420 and 650 nm at normal incidence (116). The outermost surface (106) of the film (104) may be a hard coat (124). A metal oxide layer (120) and a metal layer (130) may be included to reflect IR light greater in wavelength than about 850 nm.Type: ApplicationFiled: June 1, 2011Publication date: March 21, 2013Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Michael F. Weber, Yufeng Liu
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Patent number: 8400591Abstract: A video image evaluation equipment of the present invention is capable of converting circularly-polarized light emitted from a circularly polarizing light source into linearly-polarized light so as to transmit an absorption-type linear polarizer by a wavelength plate to be incident on a liquid crystal panel. This makes it possible to enter and reflect light emitted from the circularly polarizing light source on the liquid crystal panel without loss, which leads to display brighter video images than conventional ones.Type: GrantFiled: April 16, 2009Date of Patent: March 19, 2013Assignee: Nitto Denko CorporationInventors: Hiroyuki Yoshimi, Kentarou Takeda, Hiroaki Sawada, Masaki Hayashi
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Patent number: 8395748Abstract: An electro-optical display device includes: a reflection-type liquid crystal panel that has a driving substrate, on which a reflective layer is disposed, and an opposing substrate facing each other with a liquid crystal interposed therebetween; and an light-transmissive substrate that is disposed on an outer side of the opposing substrate, wherein any one or more values of thermal expansion coefficients of a plurality of element substrates including at least the opposing substrate and the light-transmissive substrate are negative, and any one or more values of the thermal expansion coefficients of the plurality of element substrates are positive.Type: GrantFiled: June 2, 2010Date of Patent: March 12, 2013Assignee: Seiko Epson CorporationInventors: Chiyoaki Iijima, Kazuhiro Nishida, Katsumitsu Hama
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Patent number: 8389611Abstract: An object of the present invention is to provide a pressure sensitive adhesive composition for an optical member, which is excellent in coating property because of low viscosity, can reduce an amount of an organic solvent used, and can form a pressure sensitive adhesive layer excellent in durability and having high surface uniformity.Type: GrantFiled: January 10, 2006Date of Patent: March 5, 2013Assignee: Nitto Denko CorporationInventors: Fumiaki Shirafuji, Masayuki Satake, Kohei Yano, Yutaka Moroishi, Fumiko Nakano
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Patent number: 8390760Abstract: A planar light-emitting device enabling reduction in the deflection of a sheet-shaped light-diffusing element includes a reflector having an upper surface serving as a light-reflecting surface, a partition provided on the reflector to extend upward to form a plurality of enclosed spaces over the upper surface of the reflector, light sources disposed in the enclosed spaces, respectively, and at least one sheet-shaped light-diffusing element supported on the upper edges of the partition to transmit and diffuse light from the light sources upward. The side surfaces of the partition that define the enclosed spaces are light-reflecting surfaces.Type: GrantFiled: December 3, 2009Date of Patent: March 5, 2013Assignees: Citizen Electronics Co., Ltd., Citizen Holdings Co., Ltd.Inventors: Takeshi Ogihara, Daisaku Okuwaki, Makoto Yasuhara, Taku Kumasaka