Cholesteric Reflector Patents (Class 349/115)
-
Patent number: 10012960Abstract: A watch including: a rear cover; a dial fixedly connected with the rear cover, the dial and the rear cover defining a first cavity; a transparent touch screen located on a side of the dial facing away from the rear cover and fixedly connected with the dial, the transparent touch screen and the dial defining a second cavity; at least one pointer located in the second cavity and being rotatable relative to the dial; and a driving system located in the first cavity and configured to drive the at least one pointer to rotate and the transparent touch screen to operate.Type: GrantFiled: February 26, 2016Date of Patent: July 3, 2018Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Xiangyan Zhang
-
Patent number: 9964810Abstract: A display panel includes a pair of substrates a display medium layer held between the pair of substrates and has a display region and a frame region outside the display region and a hole on an inner side of the frame region penetrating the pair of substrates and the display medium layer. The display panel further includes a hole-periphery sealing part disposed between the pair of substrates so as to surround the hole, in which the hole-periphery sealing part includes an angled portion or a protrusion.Type: GrantFiled: August 4, 2014Date of Patent: May 8, 2018Assignee: SHARP KABUSHIKI KAISHAInventors: Hisashi Watanabe, Masayuki Kanehiro, Youhei Nakanishi
-
Patent number: 9840668Abstract: Provided are a liquid crystal device, a composition capable of forming a liquid crystal layer, a method of manufacturing the liquid crystal device, a system for manufacturing the liquid crystal device, and a use of the liquid crystal device. The liquid crystal device is a device capable of exhibiting, for example, a normally transparent or black mode, exhibiting a high contrast ratio, being driven with a low driving voltage, and exhibiting excellent durability such as thermal stability. Such a liquid crystal device may be applied to various optical modulators such as a smart window, a window protective film, a flexible display device, an active retarder for displaying 3D images, or a viewing angle control film.Type: GrantFiled: December 16, 2013Date of Patent: December 12, 2017Assignee: LG CHEM, LTD.Inventors: Sung Joon Min, Jung Sun You, Dong Hyun Oh
-
Patent number: 9790429Abstract: Provided are a liquid crystal device, a composition capable of forming a liquid crystal layer, a method of manufacturing the liquid crystal device, a system for manufacturing the liquid crystal device, and a use of the liquid crystal device. The liquid crystal device is a device capable of exhibiting, for example, a normally transparent or black mode, exhibiting a high contrast ratio, being driven with a low driving voltage, and exhibiting excellent durability such as thermal stability. Such a liquid crystal device may be applied to various optical modulators such as a smart window, a window protective film, a flexible display device, an active retarder for displaying 3D images, or a viewing angle control film.Type: GrantFiled: December 16, 2013Date of Patent: October 17, 2017Assignee: LG CHEM, LTD.Inventors: Sung Joon Min, Jung Sun You, Dong Hyun Oh
-
Patent number: 9791612Abstract: A lighting system can comprise an edgelit panel, for example a lightguide that may have a panel or slab shape with an edge that is illuminated by an array of light emitting diodes extending along the edge. The edgelit panel may have light directing features associated with the edge. The light directing features can redirect light that is coupled through the edge. The redirected light can emit from a major face of the lightguide to produce a correspondingly redirected pattern of illumination. The resulting illumination of the lighting system can be biased in a particular direction as may be useful for various lighting applications. For example, in a streetlight application, the lighting system can produce illumination that is biased in a street side direction relative to a house side direction.Type: GrantFiled: April 3, 2015Date of Patent: October 17, 2017Assignee: Cooper Technologies CompanyInventor: Dylan Isaac James
-
Patent number: 9772531Abstract: The present invention provides a color liquid crystal display panel, which includes: a plurality of mutually parallel layers of liquid crystal cells (2) and bonding members (8) bonding the plurality of layers of liquid crystal cells (2). Each of the liquid crystal cells (2) includes a thin-film transistor substrate (20), a package substrate (30), and a dye-liquid crystal layer (40) sealed between the thin-film transistor substrate (20) and the package substrate (30). The dye-liquid crystal layer (40) includes a liquid crystal material and a dichroic dye. The dichroic dye of each of the liquid crystal cells (2) absorbs light of a predetermined range of wavelength. The plurality of layers of liquid crystal cells (2) respectively absorbs lights of different ranges of wavelength.Type: GrantFiled: December 2, 2013Date of Patent: September 26, 2017Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Xinhui Zhong, Kuancheng Lee
-
Patent number: 9761643Abstract: Assembly for the display of at least one piece of information for a portable object, this display assembly (1) including a first, at least partially transparent, display device (2) which is located on the side of an observer (4) and arranged to display at least a first piece of information, a second, at least partially transparent, display device (6) for displaying at least a second piece of information and a solar cell (10) being disposed in that order underneath the first display device (2), the first and second display devices (2, 6) being capable of switching between an active state in which they display information and a passive state in which they do not display information.Type: GrantFiled: July 7, 2015Date of Patent: September 12, 2017Assignee: The Swatch Group Research and Development LtdInventor: Michel Sagardoyburu
-
Patent number: 9684104Abstract: There are provided a thin film polarizer having superior optical properties and a method of manufacturing the same. The thin film polarizer includes: forming a film laminate by attaching a non-stretched polyvinyl alcohol (PVA)-based film to at least one surface of a thermoplastic polyurethane film, using attractive force therebetween or using an adhesive; stretching the film laminate at a temperature of 45° C. to 55° C.; and separating the PVA-based film from the thermoplastic polyurethane film.Type: GrantFiled: June 12, 2014Date of Patent: June 20, 2017Assignee: LG CHEM, LTD.Inventors: Sung-Hyun Nam, Jong-Hyun Jung, Kyun-Il Rah, Hye-Min Yu
-
Patent number: 9638968Abstract: The present invention provides a color liquid crystal display panel and a manufacturing method thereof, in which red, green, and blue sub-pixels are formed by means of a black matrix barrier and dye-doped liquid crystal layers that contain dichroic dyes so that the manufacturing process is reduced, the structure is simple, and the cost is low. In addition, there is no need to manufacture a conventional color filter substrate and there is no need to include a conventionally used polarizer thereby simplifying the manufacturing process of a liquid crystal display panel, lowering down the manufacturing cost of the liquid crystal display panel, reducing the required backlighting brightness, and enhancing light transmittal and optic efficiency.Type: GrantFiled: December 2, 2013Date of Patent: May 2, 2017Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventors: Xinhui Zhong, Kuancheng Lee
-
Patent number: 9570424Abstract: A light source module includes a circuit board, light emitting diode chips mounted on the circuit board by flip-chip bonding or a surface mounting technology (SMT), and a diffusor covering the circuit board and the light emitting diode chips.Type: GrantFiled: August 28, 2014Date of Patent: February 14, 2017Assignee: Seoul Semiconductor Co., Ltd.Inventors: Ki Bum Nam, Yu Dae Han
-
Patent number: 9562999Abstract: An optical film may include a polarizer configured to linearly polarize a first light to provide a linearly polarized light component. The optical film may further include a first semi-transmissive film overlapping the polarizer, configured to transmit the linearly polarized light component, and configured to reflect a first circularly polarized component of a second light. The first circularly polarized component of the second light may have a first wavelength. The optical film may further include a second semi-transmissive film overlapping the first semi-transmissive film, configured to transmit the linearly polarized light component, and configured to reflect a second circularly polarized component of the second light. The second circularly polarized component of the second light may have a second wavelength that is unequal to the first wavelength.Type: GrantFiled: May 15, 2014Date of Patent: February 7, 2017Assignee: Samsung Display Co., Ltd.Inventors: NaYoung Shin, Ji-Hoon Kim, Beong-hun Beon, Sang-Gu Lee, Daewon Kim, Minsu Kim, Seungbeom Park, Jung-Hun Lee, Yun Jang, Kyunghwan Jeon
-
Patent number: 9500904Abstract: The present invention discloses a light valve device, an infrared display apparatus, dedicated spectacles and a system, to realize with naked eyes, only a black picture plane without any information can be seen on a display screen, but with spectacles, effective image information can be seen on the display screen; as a result, the image display is more concealed. The light valve device comprises a first liquid crystal cell and a second liquid crystal cell that are oppositely disposed to each other; the first liquid crystal cell and the second liquid crystal cell are both formed by two substrates that are oppositely arranged, and alignment films with parallel or antiparallel alignment directions are formed on the inside the two substrates respectively; cholesteric liquid crystals with opposite arrangement and rotation directions are filled in the first liquid crystal cell and the second liquid crystal cell respectively.Type: GrantFiled: August 14, 2013Date of Patent: November 22, 2016Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Wenbo Li, Dongsheng Wang, Youmei Dong
-
Patent number: 9417364Abstract: There is provided a light diffusing element of a thin film, which has high light diffusibility and a small depolarization factor. A light diffusing element according to an embodiment of the present invention includes: a first region having a first refractive index; a refractive index modulation region having a substantially spherical shell shape, which surrounds the first region; and a second region having a second refractive index, which is positioned on a side of the refractive index modulation region opposite to the first region. The light diffusing element has a haze of 90% to 99.9% and a depolarization factor of 0.2% or less.Type: GrantFiled: September 16, 2011Date of Patent: August 16, 2016Assignee: NITTO DENKO CORPORATIONInventors: Kozo Nakamura, Akinori Nishimura, Hiroyuki Takemoto
-
Patent number: 9348176Abstract: The present invention provides a liquid crystal display device that is excellent in production efficiency, achieves a high CR, and significantly improves the viewing angle characteristics (reduces the gamma shift), while suppressing an image blur. The present invention provides a liquid crystal display device at least including: an anisotropic collimating backlight; a lower polarizing plate; a liquid crystal panel; an upper polarizing plate; and an anisotropic diffusion element, the anisotropic collimating backlight having a light distribution anisotropy of a specific angle being combined with the anisotropic diffusion element having a diffusion anisotropy of a specific angle.Type: GrantFiled: August 21, 2013Date of Patent: May 24, 2016Assignee: Sharp Kabushiki KaishaInventors: Akira Sakai, Masahiro Hasegawa, Hidefumi Yoshida
-
Patent number: 9164210Abstract: There is provided an optical laminate that significantly suppresses the warping of a liquid crystal panel and can realize high contrast. An optical laminate of the present invention includes: a polarizing film having a thickness of 10 ?m or less; and a reflective polarization film. A liquid crystal panel of the present invention includes: a liquid crystal cell; and the optical laminate of the present invention. According to another aspect of the present invention, an optical laminate set is provided. The optical laminate set includes: a first optical laminate that is the optical laminate of the present invention as described above; and a second optical laminate including a polarizing film having a thickness larger than the thickness of the polarizing film of the first optical laminate by 5 ?m or more.Type: GrantFiled: July 25, 2012Date of Patent: October 20, 2015Assignee: NITTO DENKO CORPORATIONInventors: Hiroaki Sawada, Tatsuya Araki, Seiji Kondo, Minoru Miyatake
-
Patent number: 9146425Abstract: Disclosed herein is a liquid crystal display having a liquid crystal display element, the liquid crystal display element including: a pair of alignment films provided on mutually facing sides of a pair of substrates; and a liquid crystal layer which is provided between the pair of alignment films and contains a liquid crystal molecule having a negative dielectric anisotropy, wherein at least one of the pair of alignment films contains a cross-linked compound obtained by cross-linking a polymer compound having a cross-linkable functional group as a side chain, the liquid crystal layer further contains a molecule which has a ring structure and a spacer linking the ring structure, and the liquid crystal molecule is given a pre-tilt by the cross-linked compound.Type: GrantFiled: June 20, 2012Date of Patent: September 29, 2015Assignee: SONY CORPORATIONInventors: Shunichi Suwa, Seiji Shibahara, Masashi Miyakawa, Masahiko Nakamura, Tadaaki Isozaki
-
Patent number: 9137525Abstract: A display device comprising at least two display layers at least in part overlapping in which at least one of said display layers has a dissimilar configuration to the other display layer(s) such that moiré interference is reduced.Type: GrantFiled: July 15, 2003Date of Patent: September 15, 2015Assignee: PURE DEPTH LIMITEDInventors: Gabriel Darmon Engel, Gareth Paul Bell
-
Patent number: 9104949Abstract: Provided are a card and card manufacturing method that enable clear visual recognition of a display in a display portion even if the card surface has been provided with a matte finish, and enable an improvement in texture related to position drift between a display device and a window portion, as well as an improvement in workability during manufacture. The card (1) has: a display portion (10); an electronic component that controls a display to the display portion (10); a surface layer (20) placed as the topmost layer of the card (1) and formed from a clear material; a mirror-surface portion (21) provided on a portion that overlaps the display portion (10); and a matte portion (22) provided on a portion outside the mirror-surface portion (21), said matte portion (22) having a coarser grain than the mirror-surface portion (21).Type: GrantFiled: August 23, 2012Date of Patent: August 11, 2015Assignee: DAI NIPPON PRINTING CO., LTDInventors: Kiyoaki Kawahara, Jintaro Tatsu
-
Patent number: 9050774Abstract: A laminate having: a support; and an antistatic layer, wherein the antistatic layer is provided on the support and is made with a composition comprising at least (A) an electrically conductive polymer, and (B) a binder component, the antistatic layer has regions having local concentration of the electrically conductive polymer (A) of 1.5 times or more higher than the average value of the concentration of the electrically conductive polymer (A) in the antistatic layer and the regions are in contact with each other to form a three-dimensional connection structure in the antistatic layer, and a common logarithmic value of the surface resistivity of which unit is ?/sq of the antistatic layer is 3.0 or more and 13.0 or less.Type: GrantFiled: April 28, 2011Date of Patent: June 9, 2015Assignee: FUJIFILM CORPORATIONInventors: Masaaki Suzuki, Hiroyuki Yoneyama, Katsuyuki Takada
-
Patent number: 9041869Abstract: A sensor substrate includes a blocking pattern disposed on a base substrate, a first electrode disposed on the base substrate and overlapping the blocking pattern, the first electrode including a plurality of first unit parts arranged in a first direction, each of the first unit parts including a plurality of lines connected to each other in a mesh-type arrangement, a color filter layer disposed on the base substrate, a plurality of contact holes defined in the color filter layer and exposing the first unit parts, and a bridge line between and connected to first unit parts adjacent to each other in the first direction, through the contact holes.Type: GrantFiled: April 25, 2013Date of Patent: May 26, 2015Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Duk-Sung Kim, Dong-Yoon Kim, Ju-Yong Park, Jae-Jin Pyun
-
Patent number: 8994902Abstract: A display device includes; a first substrate, a second substrate disposed substantially opposite to the first substrate, a third substrate disposed between the first substrate and the second substrate, a color display layer disposed between the first substrate and the third substrate, the color display layer comprising a cholesteric liquid crystal, a first electrode and a second electrode electrically connected to the color display layer, a color conversion layer disposed between the third substrate and the second substrate, and a third electrode and a fourth electrode electrically connected to the color conversion layer.Type: GrantFiled: March 19, 2009Date of Patent: March 31, 2015Assignee: Samsung Display Co., Ltd.Inventors: Sang-Il Kim, Nam-Seok Roh
-
Patent number: 8988638Abstract: A polarization-sensitive beaded retro-reflective sheeting having cholesteric liquid crystal material as the specular reflective coating and methods of making the same are described.Type: GrantFiled: May 25, 2011Date of Patent: March 24, 2015Inventor: Yingqiu Jiang
-
Patent number: 8982288Abstract: The invention provides a process capable of fabricating a cholesteric liquid crystal medium having a volume hologram with efficiency yet without recourse to complicated steps such as an alignment step. This is achievable as follows. A volume hologram layer is formed on a substrate, and a cholesteric liquid crystal layer is then formed on another substrate. The volume hologram layer and the cholesteric liquid crystal layer are laminated together via a bonding layer. Further, a bonding for lamination onto an application member is formed on either the volume hologram layer side or the cholesteric liquid crystal layer side to obtain a cholesteric liquid crystal medium having a volume hologram.Type: GrantFiled: September 7, 2006Date of Patent: March 17, 2015Assignee: Dai Nippon Printing Co., Ltd.Inventors: Masachika Watanabe, Masanori Umeya, Koji Eto, Tsuyoshi Yamauchi
-
Publication number: 20150070628Abstract: The present invention relates to electro-optical switching elements and displays comprising them. In particular, it relates to electro-optical switching elements comprising at least a light reflecting layer, a light switching layer, and a light conversion layer, which comprises one or more light emitting substances, in particular, a light reflecting layer, which selectively reflects visible light, a light controlling element that controls the amount of transmitted and/or reflected light, and a light converting layer that shifts the wavelength of the transmitted light to longer values. The displays give bright images under either bright or dark conditions with small power consumption. They are particularly suitable for so called liquid crystal, electronic paper (e-paper) and MEMS switching applications.Type: ApplicationFiled: April 3, 2013Publication date: March 12, 2015Applicant: MERCK PATENT GMBHInventors: Masayoshi Suzuki, Naoya Fujiwara
-
Patent number: 8976322Abstract: An Active Matrix Organic Light Emitting Diode (AMOLED) display and a method of controlling a display thereof are provided. The AMOLED display includes an input unit, a controller, a display unit for displaying a low power mode screen, by enabling the controller to turn off an AMOLED and to turn on a cholesteric Liquid Crystal Display (LCD) in a low power mode, and for displaying a high picture quality mode screen, by enabling the controller to turn on the AMOLED and to turn off the cholesteric LCD in a high picture quality mode. When used in an indoor environment, the AMOLED display can operate in the high picture quality mode, and when used in an outdoor environment or as an e-book reader, the AMOLED display can operate in the low power mode.Type: GrantFiled: July 19, 2011Date of Patent: March 10, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Jung Hyun Kim, Dong Sub Kim
-
Patent number: 8953126Abstract: A liquid crystal display according to exemplary embodiments of the present invention includes a first panel including a first lower substrate, a first lower electrode formed on the first lower substrate, a first upper substrate facing the first lower substrate, a first upper electrode formed on the first upper substrate, and a first cholesteric liquid crystal injected between the first lower electrode and the first upper electrode, wherein the first lower electrode includes carbon nanotubes. The liquid crystal display including the first lower electrode made of the carbon nanotubes without a light absorption layer provides a simple structure capable of realizing a black state.Type: GrantFiled: April 26, 2010Date of Patent: February 10, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jong-Seong Kim, Nam-Seok Roh, Sang-Il Kim, Woo-Jae Lee
-
Patent number: 8952900Abstract: A touch screen display apparatus for easily sensing the touch of a user. The touch screen display apparatus includes: a substrate; a display unit formed on the substrate; and a touch panel disposed to face the display unit, where the touch panel comprises a sealing substrate, a first electrode formed on the sealing substrate, a second electrode spaced apart from the first electrode, and a light receiving unit comprising an organic material interposed between the first electrode and the second electrode.Type: GrantFiled: August 9, 2010Date of Patent: February 10, 2015Assignee: Samsung Display Co., Ltd.Inventors: Moon-Jae Lee, Won-Jun Song, Sun-Hee Lee, Young-Hee Lee, Mu-Hyun Kim, Hye Dong Kim, Ji-Young Kim
-
Patent number: 8952946Abstract: A display panel, ensuring high photo-detection accuracy in a region near a frame area, is provided. The display panel includes: image display elements disposed in an effective display area of a display screen; a light-shielding layer disposed in a frame area around the effective display area; and photo-detection elements disposed in the effective display area or in both of the effective display area and the frame area. The photo-detection elements detect the invisible light. The light-shielding layer transmits invisible light, while shields visible light.Type: GrantFiled: December 21, 2009Date of Patent: February 10, 2015Assignee: Sony CorporationInventors: Yoko Fukunaga, Tetsuro Ochi, Daisuke Takama, Yasuyuki Matsui
-
Patent number: 8947620Abstract: The invention provides a broadband cholesteric liquid crystal film, a method for fabricating the same, a polarization device employing the same, and high light efficiency liquid crystal display employing the same. The cholesteric liquid crystal film is a single-layer liquid crystal material structure, and has a top surface and a bottom surface. Further, the cholesteric liquid crystal film includes a first region, a second region, and a third region, and the first region is adjacent to the top surface of the cholesteric liquid crystal film, the third region is adjacent to the bottom surface of the cholesteric liquid crystal film, and the second region is located between the first and third regions, and the average helical pitch P1 of the first region and the average helical pitch P3 of the third region are both larger than the average helical pitch P2 of the second region.Type: GrantFiled: October 28, 2011Date of Patent: February 3, 2015Assignee: Industrial Technology Research InstituteInventors: Hui-Lung Kuo, Mei-Chih Peng, Yi-Ping Hsieh, Chin-Kai Chang
-
Patent number: 8934077Abstract: There is provided a cholesteric liquid crystal display device including a first liquid crystal panel containing a first cholesteric liquid crystal substancecrystal material for reflecting a light of a first color, a second liquid crystal panel containing a second cholesteric liquid crystal substancecrystal material for reflecting a light of a second color, a third liquid crystal panel containing a third cholesteric liquid crystal substancecrystal material for reflecting a light of a third color, a light absorption layer combined to a lower portion of the third liquid crystal panel, a first double-sided adhesive buffer layer configured to combine the second liquid crystal panel to a lower portion of the first liquid crystal panel and a second double-sided adhesive buffer layer configured to combine the third liquid crystal panel to a lower portion of the second liquid crystal panel.Type: GrantFiled: April 30, 2012Date of Patent: January 13, 2015Assignee: Intellectual Discovery Co., Ltd.Inventors: Hyun Ha Hwang, Seung Gon Kang, Heon Kyu Kim
-
Patent number: 8928843Abstract: An object of the present invention is to provide an optical unit and a backlight unit which can markedly enhance utilization efficiency of rays of light and dramatically increase luminance, and which are suited for immediate beneath type liquid crystal display modules and the like. The optical unit of the present invention is a rectangular layered structural member having a reflection polarizing plate, an optical sheet superposed on the back face side of the reflection polarizing plate, and a transparent media layer filled between the reflection polarizing plate and the optical sheet. This optical sheet includes a resin substrate film having an optical anisotropy, and the absolute value of the angle of the crystal orientation of the substrate film with respect to the transmission axial orientation of the reflection polarizing plate is ?/8 or greater and 3?/8 or less. The retardation value of the substrate film is preferably 70 nm or greater and 320 nm or less.Type: GrantFiled: June 25, 2007Date of Patent: January 6, 2015Assignee: Keiwa Inc.Inventor: Kenichi Harada
-
Patent number: 8908131Abstract: A cholesteric reflector comprising a substrate and a first cholesteric layer that is disposed over the substrate and reflects a first polarization of light within a design waveband. A second cholesteric layer is disposed over the first cholesteric layer and reflects a second polarization of light within the design waveband.Type: GrantFiled: December 18, 2009Date of Patent: December 9, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Stephen Kitson, Adrian Geisow
-
Patent number: 8908130Abstract: Optical elements and backlight modules employing the same are provided. The optical element can be a brightness enhancement diffusion complex film, comprising a cholesteric liquid crystal film and a transparent optical film directly disposed on the cholesteric liquid crystal film. Particularly, the whole transparent optical film directly contacts to the cholesteric liquid crystal film, in the absence of an intermediate located between the transparent optical film and the cholesteric liquid crystal film.Type: GrantFiled: November 2, 2009Date of Patent: December 9, 2014Assignee: Industrial Technology Research InstituteInventors: Ying-Jui Lin, Hui-Lung Kuo, Pin-Chen Chen, Pao-Ju Hsieh
-
Patent number: 8882300Abstract: A color filter comprises a first filter element and a second filter element. The first filter element includes a plurality of arrayed filter regions allowing a first spectral component of incident light to pass and reflecting other spectral components of the incident light. The second filter element includes a plurality of arrayed filter regions allowing a second spectral component of the incident light to pass and reflecting other spectral components of the incident light. The center of the filter regions of the second filter element is deviated from the center of the filter regions of the first filter element so that the light reflected from the first filter element can pass through the second filter element. Thereby is enhanced the energy efficiency of the color filter. An edge-type backlight module using the abovementioned color filter is also disclosed.Type: GrantFiled: January 18, 2013Date of Patent: November 11, 2014Assignee: National Tsing Hua UniversityInventors: Cheng-Huan Chen, Po-Hung Yao
-
Patent number: 8848145Abstract: A light reflective film is produced by (a) forming a hard coat layer having a surface energy of less than 30 mN/m and a pencil hardness of at least 2H on a resin film, (b) applying a curable liquid crystal composition onto the surface of the opposite side, (c) drying the applied curable liquid crystal composition to be in a state of a cholesteric liquid crystal phase, (d) promoting the curing reaction to form a light reflective layer, and (e) repeating at least once the process of from (b) to (d).Type: GrantFiled: July 21, 2011Date of Patent: September 30, 2014Assignee: Fujifilm CorporationInventors: Kazuhiro Oki, Takao Taguchi
-
Patent number: 8842241Abstract: A light reflective film is produced by (a) forming an antistatic layer having a surface energy of at least 30 mN/m on a resin film, (b) applying a curable liquid crystal composition onto the surface of the opposite side, (c) drying the applied curable liquid crystal composition to be in a state of a cholesteric liquid crystal phase, (d) promoting the curing reaction to form a light reflective layer, and (e) repeating at least once the process of from (b) to (d).Type: GrantFiled: July 21, 2011Date of Patent: September 23, 2014Assignee: Fujifilm CorporationInventors: Kazuhiro Oki, Takao Taguchi
-
Patent number: 8804074Abstract: A liquid crystal display device including: a liquid crystal display element that includes a liquid crystal layer, and an upper substrate and a lower substrate opposed to each other via the liquid crystal layer, a plurality of liquid crystal display elements being stacked; wherein a condensing direction of a reflected light by directional control in at least one of the liquid crystal display elements is different from a condensing direction of a reflected light by directional control in at least one of another liquid crystal display elements.Type: GrantFiled: December 1, 2011Date of Patent: August 12, 2014Assignee: Fujitsu LimitedInventors: Yoshihisa Kurosaki, Toshiaki Yoshihara, Takuto Kato
-
Patent number: 8767145Abstract: In accordance with the invention, display systems have a view switch panel placed in front of displaying surface of a display to manipulate lights outputted thereby or incidence ambient lights. The view switch panel comprises a layer of reflective polarizer and a polarization steering layer comprising a layer of liquid crystal and two electrode layers sandwiching the layer of liquid crystal in between, and may further comprise a layer of second polarizer placed on the other side of the polarization steering layer than the layer of reflective polarizer. The view switch panel uses the polarization steering layer to steer polarization of pass-through lights, then direct the lights by reflection or transmission by the layer of reflective polarizer. Two display systems, dual view convertible display making displayed images selectively viewable from either side and mirror view display making selectively front surface either reflective or non-reflective, are described.Type: GrantFiled: January 3, 2012Date of Patent: July 1, 2014Inventor: Wei Zhang
-
Patent number: 8736794Abstract: Provided is a light-emitting device exhibiting a high light-emission efficiency and moreover may utilize an external light radiating from the back side. A light-emitting device has a light-emitting element and a reflective layer reflecting light emitted from the light-emitting element. The reflective layer has a first layer constituted from a liquid crystal having a helical structure; a second layer disposed on opposite side of the first layer from the light-emitting element, and constituted from a liquid crystal having a helical structure with the same twisting direction as the first layer; and a third layer interposed therebetween to divide a light transmitted through the third layer itself into two intrinsic polarized lights causing a phase difference between the two intrinsic polarized lights.Type: GrantFiled: March 7, 2012Date of Patent: May 27, 2014Assignee: Panasonic CorporationInventor: Yuko Matsuhisa
-
Patent number: 8711307Abstract: A heat shield comprising a first light-reflective layer, having a reflectance peak both in a wavelength range of from 400 nm to less than 850 nm and in a wavelength range of from more than 850 nm to 1300 nm and satisfying C>A>B, is disclosed. “A” means the maximum reflectance in the wavelength range of from 400 nm to less than 850 nm; “B” means the reflectance at a wavelength of 850 nm; “C” means the maximum reflectance in the wavelength range of from more than 850 nm to 1300 nm; and “B” is equal to or less than 50%.Type: GrantFiled: February 1, 2011Date of Patent: April 29, 2014Assignee: FUJIFILM CorporationInventors: Kazuhiro Oki, Wataru Majima, Mitsuyoshi Ichihashi, Yuichi Shirasaki
-
Patent number: 8704981Abstract: Provided is a method of producing a light-reflective film that can prevent the blocking of a liquid crystal layer and a support without lowering transparency of the film. The method includes a step of coating a curable liquid crystal composition that contains a curable cholesteric liquid crystal compound onto one surface of a support of which a surface roughness Ra of the other surface thereof is 4.5 nm to 25 nm; a step of aligning the curable cholesteric liquid crystal compound to make a state of a cholesteric liquid crystal phase aligned by heating the coated curable liquid crystal composition; a step of irradiating in which a light-reflecting layer where the cholesteric liquid crystal phase has been fixed is formed by advancing a curing reaction of the curable liquid crystal composition; and a step of charging the support and the light-reflecting layer with the same polarity.Type: GrantFiled: March 23, 2012Date of Patent: April 22, 2014Assignee: Fujifilm CorporationInventors: Takao Taguchi, Kazuhiro Oki
-
Patent number: 8704996Abstract: A cholesteric liquid crystal device is provided. The cholesteric liquid crystal device includes a first substrate, a second substrate disposed opposite to the first substrate, a first reflective layer disposed over the first substrate, a second reflective layer disposed over the second substrate, facing the first reflective layer, and a partition structure disposed between the first and the second substrates, wherein a cavity is formed by the partition structure, the first reflective layer and the second reflective layer, and a cholesteric liquid crystal layer is filled in the cavity.Type: GrantFiled: April 22, 2011Date of Patent: April 22, 2014Assignee: Industrial Technology Research InstituteInventors: Kuan-Ting Chen, Yi-Shou Tsai
-
Patent number: 8698716Abstract: Techniques are provided to drive a normally white or mixed mode LCD with low voltages and low power consumption. A sub-pixel in the LCD may comprise a reflective part and a transmissive part. The cell gap for a liquid crystal layer in the sub-pixel may provide at least a half-wave phase retardation. A driving voltage range with a maximum voltage at a low value may be used to drive the reflective part and the transmissive part of the sub-pixel to various levels of brightness.Type: GrantFiled: May 18, 2010Date of Patent: April 15, 2014Assignee: Pixel Qi CorporationInventors: Ruibo Lu, Mary Lou Jepsen
-
Patent number: 8696135Abstract: A projector has at least four primary color components controlled to produce a metameric effect image which is not perceptible to the human optical system and is perceptible to a video recording device.Type: GrantFiled: February 19, 2008Date of Patent: April 15, 2014Assignee: Thomson LicensingInventors: Youngshik Yoon, Pascal Bourdon, Laurent Blondé, Didier Doyen
-
Patent number: 8670093Abstract: Disclosed is an LCD device which facilitates to realize a high aesthetic sense by obtaining a colorful and entirely-unified color screen under the circumstance that an image is not displayed in a turning-off state, wherein the LCD device comprises: a liquid crystal module which comprises a liquid crystal panel for displaying an image; a set cover which supports the liquid crystal module; and a color realization film which selectively transmits light with a predetermined wavelength when the liquid crystal module is turned-off, wherein the color realization film comprises a cholesteric liquid crystal layer (CLC), a quarter wave plate (QWP), and a first adhesive layer formed between the cholesteric liquid crystal layer (CLC) and the quarter wave plate (QWP).Type: GrantFiled: July 13, 2011Date of Patent: March 11, 2014Assignee: LG Display Co., Ltd.Inventors: Hye Rin Hyun, Jong Won Moon, Jong Beom Lee
-
Publication number: 20140055731Abstract: A cholesteric liquid crystal display and a method of making are provided. The cholesteric liquid crystal display may include a first layer of insulating material forming a force backplate and having a conductive trace laminated thereto. Components may be soldered to and electrically connected to the conductive trace. A second layer of insulating material may be laminated over the first layer, the soldered components, and the conductive trace to form a thin smooth layer. A pressure-sensitive cholesteric liquid crystal display layer may be laminated to a surface of the thin smooth layer. The force backplate is substantially thick such that when pressure is applied to a surface of the pressure-sensitive cholesteric liquid crystal display layer with an implement dragged across a surface thereof, a reflective state of liquid crystal is changed and a line representative of a thickness of the implement is displayed.Type: ApplicationFiled: August 23, 2012Publication date: February 27, 2014Applicant: Microsoft CorporationInventor: Bernard Kirk Rihn
-
Patent number: 8648996Abstract: A method of producing a light-reflecting film having a light-reflecting layer on a resin film and reflecting 30% or more of incident light of a wavelength in the range of 800 to 2000 nm, includes a step of curing a cholesteric liquid crystal phase to form the light-reflecting layer, the cholesteric liquid crystal phase is obtained by mixing a chiral agent having an HTP of 30 ?m?1 or more expressed by Expression 1 into a starting solution by an in-line mixing method while supplying the starting solution prepared by dissolving a curable liquid crystal compound in a solvent, coating the resin film with the resultant coating solution, and drying the resultant.Type: GrantFiled: October 4, 2011Date of Patent: February 11, 2014Assignee: Fujifilm CorporationInventor: Kazuhiro Oki
-
Patent number: 8643794Abstract: Disclosed herein is a heat-insulating film (window solar film) including an absorbing layer and a cholesteric liquid crystal layer. The absorbing layer is used to absorb ultraviolet light and infrared light. The pitch of the cholesteric liquid crystal layer is configured in a way such that the cholesteric liquid crystal layer reflects the infrared light.Type: GrantFiled: April 12, 2012Date of Patent: February 4, 2014Assignee: A+ R&D Technology Co., Ltd.Inventor: Sui-Ho Tsai
-
Publication number: 20140022493Abstract: In an identification medium, switching of images can be clearly observed, and the medium has a structure produced at low cost. The structure comprises a cholesteric liquid crystal layer 102 in which a hologram is formed, and which selectively reflects circularly polarized light of a specific rotating direction of a specific central wavelength, a cholesteric liquid crystal layer reflecting the entire range of visible light 105 which has reflection characteristics equivalent to a case of reflecting the entire range of visible light and which reflects circularly polarized light of the same rotating direction as the circularly polarized light reflected from the cholesteric liquid crystal layer 102, and a display pattern 106 having a specific content displayed, arranged in this order, as seen from the side of observation.Type: ApplicationFiled: March 8, 2012Publication date: January 23, 2014Applicant: NHK SPRING CO., LTD.Inventors: Hidekazu Hoshino, Itsuo Takeuchi, Seiya Shibuya, Tooru Ida
-
Patent number: RE47018Abstract: A transparent display apparatus is provided that is constructed to transmit or block a light of images selectively according to a supply of electric power to a conventional transparent organic light emitting diode. The transparent display apparatus includes a transparent organic light emitting diode having a glass substrate, a transparent anode, a hole transport layer, an emitting layer, an electron transport layer and a transparent cathode. The transparent display apparatus includes an insulating layer stacked on the transparent cathode, and first and second transparent ITOs stacked on the insulating layer to deliver electromotive force onto an entire surface and to transmit or block the light of images according to the on/off state of a power source. The transparent display apparatus also includes an electro chromic layer provided between the first and the second transparent ITOs and including transparent and colorless chemicals.Type: GrantFiled: July 18, 2014Date of Patent: August 28, 2018Assignee: Samsung Electronics Co., LtdInventor: Ho-Seong Seo