With Particular Non-zero Angle Between Polarization Axis And Compensator Optical Axis Patents (Class 349/102)
  • Patent number: 10656458
    Abstract: A liquid crystal display panel includes: a liquid crystal cell that has a liquid crystal layer; first and second linear polarizers arranged on an observer side and a back surface side of the liquid crystal cell; a first retardation layer arranged between the first linear polarizer and the liquid crystal layer; and a second retardation layer arranged between the first retardation layer and the second linear polarizer.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: May 19, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kenji Fujita, Takayuki Natsume, Masaaki Saitoh, Masaomi Kuwabara
  • Patent number: 10429692
    Abstract: The present disclosure provides a liquid crystal display panel. The liquid crystal display panel includes an upper substrate, a lower substrate, a liquid crystal layer sandwiched between the upper and lower substrates, an upper regionalized polarizer disposed on the upper substrate including a plurality of first upper polarizing units and second upper polarizing units, and a lower regionalized polarizer disposed on the lower substrate including a plurality of first lower polarizing units and second lower polarizing units. The first lower polarizing units correspond to the first upper polarizing units. The second lower polarizing units correspond to the second upper polarizing units. The first upper polarizing units and the second upper polarizing units have mutually orthogonal polarization directions. The first lower polarizing units and the first upper polarizing units have mutually orthogonal polarization directions.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: October 1, 2019
    Assignees: Xiamen Tianma Micro-electronics Co., Ltd., Tianma Micro-electronics Co., Ltd.
    Inventors: Shulin Yao, Long Zhang, Ting Zhou, Poping Shen, Zhaokeng Cao
  • Patent number: 10396128
    Abstract: A display apparatus includes a display panel configured to display an image. The display panel has a folding axis extending in a first direction. An optical film is disposed over the display panel. The optical film includes a circular polarizer including at least two phase retarders and one polarizer. Slow axes of each of the at least two phase retarders are located in the same quadrant of four quadrants of the optical film.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: August 27, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dongwook Choi, Taeeun Kim, Heeyoung Lee, Dukjin Lee, Woosuk Jung
  • Patent number: 10234719
    Abstract: A display panel and a manufacturing method therefor, a drive method and a display device. The display panel includes a first substrate and a second substrate which are arranged opposite to each other. The first substrate includes a first base substrate, and a plurality of first wire grid polarizers and a plurality of pixel units, which are successively located on a side of the first base substrate facing the second substrate in an array arrangement; polarization directions of two adjacent first wire grid polarizers are perpendicular to each other. The second substrate includes: a second base substrate, and a plurality of second wire grid polarizers in an array arrangement which are located on a side of the second base substrate facing the first substrate, and polarization directions of two adjacent second wire grid polarizers are perpendicular to each other.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: March 19, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaolong He, Jianhua Du
  • Patent number: 10197717
    Abstract: A window member for a display device includes a base substrate having a light transmission area and a light blocking area adjacent to the light transmission area. A light blocking layer is disposed on one surface of the base substrate in the light blocking area. The light blocking layer includes a light blocking base capable of blocking light; and a heat radiating pigment dispersed on the light blocking base.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 5, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeon-Deuk Hwang, Ik-Jun Hong
  • Patent number: 10199600
    Abstract: A display device may include a display panel that includes a plurality of display elements. The display device may further include a protective member overlapping the display panel. The display device may further include an optical member disposed between the display panel and the protective member and configured to prevent light reflected by the display panel from reaching the protective member. The optical member may include a plurality of directional members. The plurality of directional members may have an optic axis.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: February 5, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Innam Lee, Suk Choi, Youngkuil Joo, Kyung Woo Han
  • Patent number: 9977253
    Abstract: An optical device according to an embodiment includes a first birefringent element on which coherent incident light is incident, a transmissive diffusing element on which light emitted from the first birefringent element is incident, and a second birefringent element on which light emitted from the transmissive diffusing element is incident. Light emitted by a laser light source is incident on the first birefringent element and the incident light is separated into two lights by birefringence to be incident on the diffusing element. The diffusing element diffuses the two lights to emit. The second birefringent element synthesizes the two lights emitted from the diffusing element into one light to emit.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: May 22, 2018
    Assignee: JVC KENWOOD Corporation
    Inventor: Takatsugu Aizaki
  • Patent number: 9798182
    Abstract: A liquid crystal display (LCD) device, including a lower polarizing plate configured to have a transmission axis in a first direction, a liquid crystal layer on the lower polarizing plate, an upper polarizing plate on the liquid crystal layer, the upper polarizing plate including a first polarizing plate and a second polarizing plate, the first polarizing plate having a transmission axis in the first direction, the second polarizing plate having a transmission axis in a second direction perpendicular to the first direction, and color filters including a white filter and a colored filter, the white filter overlapping with the first polarizing plate, and the color filter overlapping with the second polarizing plate.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: October 24, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Wan Soon Im, Nam Seok Roh, Young Goo Song, Hyoung Cheol Lee, Yong Woo Hyung, Hyung June Kim, Joong Gun Chong, Jong Hak Hwang
  • Patent number: 9664971
    Abstract: The present disclosure provides an array substrate and a method for producing the same and a liquid crystal display apparatus. The array substrate provided by an embodiment of the present invention comprises: a base substrate; a plurality of sub-pixel regions which are delimited by gate lines and data lines respectively and which are located on the base substrate, each of which is provided with a thin film transistor TFT and a common electrode above the thin film transistor; and an alignment film located above the common electrode, wherein the alignment film has an alignment direction at a predetermined angle to the direction in which the gate lines extend, and a void region is arranged at a location of the common electrode corresponding to the thin film transistor, the direction in which the void region extends being identical to the alignment direction of the alignment film.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 30, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hui Li, Hyun Sic Choi, Zheng Fang, Haiyan Wang, Yunyun Tian
  • Patent number: 9658490
    Abstract: A touch display device includes an upper polarizer, a display unit and a touch sensing unit. The upper polarizer allows light having a first linear polarization direction to pass therethrough and blocks light having a second linear polarization direction. The second linear polarization direction is perpendicular to the first linear polarization direction. The display unit is spaced-apart from the upper polarizer and is used to display images. The touch sensing unit is disposed between the upper polarizer and the display unit, and includes an optical compensation substrate and a touch sensing electrode structure disposed on the optical compensation substrate. The optical compensation substrate is flexible and is able to control the polarization property of the light passing therethrough.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: May 23, 2017
    Assignee: TPK Universal Solutions Limited
    Inventors: Kuo-Feng Kao, Sung-Chien Huang, Cheng-Yuan Lu, Hung-Yu Tsai
  • Patent number: 9645443
    Abstract: According to an aspect, a reflective liquid-crystal display device includes a liquid-crystal panel and a front light unit. The liquid-crystal panel includes a sheet-like anisotropic scattering member having low refractive index areas and high refractive index areas with a refractive index higher than that of the low refractive index areas. The front light unit includes a light guide plate laminated on the liquid-crystal panel and having a number of grooves formed on a surface facing the liquid-crystal panel at a pitch of equal to or smaller than 100 ?m and a light source that makes light incident on the light guide plate. An arrangement interval of the unit pixels is larger than an average of an arrangement interval of the high refractive index area of the anisotropic scattering member.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: May 9, 2017
    Assignee: Japan Display Inc.
    Inventors: Yoko Fukunaga, Susumu Kimura
  • Patent number: 9638955
    Abstract: A liquid crystal display device according to the present invention includes a rear light source device, a rear polarizing plate, a liquid crystal cell including liquid crystal molecules that are substantially perpendicularly aligned during black display, and a front polarizing plate, which are provided in the stated order, wherein: an absorption axis of a polarizer of the rear polarizing plate is perpendicular to an absorption axis of a polarizer of the front polarizing plate; and condensed light in which a half-value angle in a direction perpendicular to the absorption axis of the polarizer of the rear polarizing plate is smaller than a half-value angle in a direction parallel to the absorption axis of the polarizer of the rear polarizing plate enters the rear polarizing plate.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: May 2, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hiroyuki Takemoto, Minoru Miyatake
  • Patent number: 9632360
    Abstract: A liquid crystal panel and a liquid crystal display are disclosed. The liquid crystal display includes a liquid crystal cell having a light incident side and a light emitting side, a first polarizer arranged on the light incident side of the liquid crystal panel, a second polarizer arranged on the light emitting side of the liquid crystal panel, and a half wave plate arranged between the first polarizer and the liquid crystal cell. An absorbing axis of the first polarizer is parallel to the absorbing axis of the second polarizer, and an angle between a slow axis of the half wave plate and the absorbing axis of the first polarizer is 45 or 135 degrees. In this way, the liquid crystal display with the two polarizers parallel to each other can be in all-black state when no voltage is applied. In addition, the contrast is greatly enhanced.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: April 25, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Chih-tsung Kang, Bo Hai
  • Patent number: 9625763
    Abstract: An LCD includes a first TAC film, a first optical uniaxial phase compensating film, an LC cell, a second optical uniaxial phase compensating film and a second TAC film from the incident surface to the emitting surface. The first optical uniaxial phase compensating film is used for providing a first compensating value and a second compensating value by adjusting thickness and by adjusting a first refractive index, a second refractive index, and a third refractive index. The second optical uniaxial phase compensating film is used for providing a third compensating value by adjusting thickness and by adjusting a fourth refractive index, a fifth refractive index, and a sixth refractive index. Leakage of light is controlled according to the first compensating value, the second compensating value, and the third compensating value in the LCD.
    Type: Grant
    Filed: January 4, 2015
    Date of Patent: April 18, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Bo Hai, Chihtsung Kang
  • Patent number: 9594255
    Abstract: A time-multiplexed stereoscopic 3d projection system including a beam-splitting element to split the randomly polarized image-beam generated by a single-lens projector into one primary image-beam, possessing a first state of linear polarization, and two secondary image-beams, both possessing a second state of linear polarization. The polarization states are mutually orthogonal. The primary and secondary image-beams recombine to form a complete image on the surface of a polarization-preserving projection-screen. There are polarization modulators that modulate the first and second states of linear polarization between a left and right circular polarization state. There is a contrast enhancement film in the optical-path of the primary or secondary image-beams located between the polarization modulator and the projection-screen.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: March 14, 2017
    Assignee: Volfoni R&D Eurl
    Inventor: Stephen Palmer
  • Patent number: 9557598
    Abstract: An embodiment of the present invention discloses a display apparatus comprising: a display panel having a first side and a second side in opposite to the first side; a first polarizer arranged on the first side of the display panel; and a second polarizer arranged on either of the first side and the second side of the display panel, wherein an angle between a direction of a light transmission axis of the second polarizer and a direction of a light transmission axis of the first polarizer is adjustable.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: January 31, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wenbo Li, Yefei Dong
  • Patent number: 9535303
    Abstract: The present invention provides a liquid crystal display device, the liquid crystal display device comprising an upper polarizer, a lower polarizer and a first liquid crystal cell arranged between the upper polarizer and the lower polarizer, wherein a second liquid crystal cell is further arranged between the upper polarizer and the first liquid crystal cell, the second liquid crystal cell comprising a first electrode, a second electrode and a first liquid crystal layer arranged between the first electrode and the second electrode, the first liquid crystal layer being a blue phase liquid crystal layer, the first electrode and the second electrode being used for forming a vertical electric field. The present invention can realize switching between a wide view mode and a narrow view mode of the liquid crystal display device.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: January 3, 2017
    Assignee: Boe Technology Group Co., Ltd.
    Inventor: Weili Zhao
  • Patent number: 9459389
    Abstract: There is provided a polarizing plate that achieves an excellent reflection hue. A polarizing plate according to an embodiment of the present invention is used in an organic EL panel, and includes a polarizer and a retardation film. In-plane retardations of the retardation film satisfy a relationship of Re(450)<Re(550); and an angle ? formed between an absorption axis of the polarizer and a slow axis of the retardation film satisfies a relationship of 38°???44° or of 46°???52°.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 4, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Takashi Shimizu, Nao Murakami, Kazuki Uwada, Tadashi Kojima, Hironori Yaginuma
  • Patent number: 9310544
    Abstract: A polarizer including a base film, a first alignment layer disposed on the base film, a phase delay layer disposed on the first alignment layer, a second alignment layer disposed on the phase delay layer, and a polarizing layer disposed on the second alignment layer. The phase delay layer includes a first liquid crystal composition including first liquid crystals, a first antioxidant, and a derivative thereof.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: April 12, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suk Choi, Jihong Bae, Valeriy Prushinskiy, Hyun-Joo Hwang
  • Patent number: 9164308
    Abstract: An optical compensation structure and a display device are disclosed. The former comprises a front side polarizer and a rear side polarizer arranged at both sides of a VA liquid crystal unit; wherein the front side polarizer includes a front side polarization unit as well as a biaxial film arranged between the front side polarization unit and the VA liquid crystal unit; the rear side polarizer includes a rear side polarization unit as well as a first rear side TAC film arranged between the rear side polarization unit and the VA liquid crystal unit. The region having serious dark-state light leakage can be transferred from a horizontal viewing angle to a vertical viewing angle, which improves the display effect. There is no addition of the number of layers of the biaxial film, which reduces the cost.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: October 20, 2015
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chih-Tsung Kang, Bo Hai
  • Patent number: 9164323
    Abstract: A display device comprises a VA liquid crystal display unit as well as a front side polarizer and a rear side polarizer arranged respectively at both side of the VA liquid crystal display unit; wherein the VA liquid crystal display unit has an optical path difference ?nd of 324.3 nm to 305.8 nm at the wavelength of 550 nm; the front side polarizer is arranged at a side in the light-exiting direction of the VA liquid crystal unit; one of the front side polarizer and the rear side polarizer includes the biaxial compensation film, which has an in-plane delay Ro of 50.4-78 nm at the wavelength of 550 nm and a thickness direction delay Rth-b of 168-260 nm at the wavelength of 550 nm. The amount of light leakage is significantly reduced with the contrast close to the horizontal viewing angle obviously increased and the display effect further improved.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 20, 2015
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chih-Tsung Kang, Bo Hai
  • Patent number: 9104061
    Abstract: A color filter substrate includes: a transparent substrate; a plurality of color filters which are separately disposed on the transparent substrate; a black matrix unit made of a non-transparent material and formed on the transparent substrate, the black matrix encircling the color filters; and at least one alignment unit that includes at least two alignment holes penetrating the black matrix to expose the transparent substrate.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: August 11, 2015
    Assignee: INNOLUX CORPORATION
    Inventor: Chih-Kuei Chang
  • Publication number: 20150146142
    Abstract: The present invention relates to liquid crystal display technology, and provides an optical compensation film for a liquid crystal display, including a first polarizer and a second polarizer disposed on both sides of the liquid crystal panel respectively, and an A-plate and a C-plate arranged between the liquid crystal panel and the first polarizer or between the liquid crystal panel and the second polarizer, wherein the in-plane compensation value for optical path difference of the A-plate RoA-plate lies in the range of [92, 184]nm, the compensation value for optical path difference in the thickness direction of the A-plate RthA-plate lies in the range of [46, 92]nm. The dark-state light leakage distribution and the contrast ratio of the display are improved through the optical compensation film according to the invention. The invention further provides a liquid crystal display including an optical compensation film.
    Type: Application
    Filed: January 21, 2014
    Publication date: May 28, 2015
    Inventors: Chih-Tsung Kang, Bo Hai
  • Patent number: 9019451
    Abstract: A liquid crystal display (LCD) device includes a birefringent layer that satisfies the relationship nx>ny?nz and may be considered a first-class birefringent layer, a birefringent layer that satisfies the relationship nx<ny?nz may be considered a second-class birefringent layer, and a birefringent layer that satisfies the relationship nx?ny?nz may be considered a third-class birefringent layer. The LCD may include a first polarizer, a first first-class birefringent layer whose in-plane phase difference is adjusted to a quarter wave, an LC cell, a second first-class birefringent layer whose Nz factor is substantially the same as the first first-class birefringent layer and whose in-plane phase difference is adjusted to a quarter wave, a second-class birefringent layer, and a second polarizer which may be stacked in this order.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: April 28, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Sakai, Kazuyoshi Sakuragi, Masahiro Hasegawa
  • Patent number: 9013657
    Abstract: A liquid crystal device includes a liquid crystal panel including a pair of substrates that sandwiches a liquid crystal layer containing liquid crystal molecules exhibiting a parallel alignment in an initial alignment state, and a polarizing plate disposed on either side of the liquid crystal panel. The liquid crystal molecules are inclined at a pretilt angle and aligned in a predetermined direction in planes of the substrates. The liquid crystal panel emits light entering through one of the polarizing plates toward the other. The liquid crystal panel emits light having the maximum intensity in a direction different from a direction normal to the substrates. The azimuth of the maximum-light-intensity direction projected onto the planes of the substrates is substantially parallel to the predetermined direction.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: April 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Osamu Okumura
  • Patent number: 8988636
    Abstract: An electronic device is provided with a display such as a liquid crystal display mounted in an electronic device housing. The display has a layer of liquid crystal material sandwiched between an upper display layer such as a color filter layer and a lower display layer such as a thin-film-transistor layer. An upper polarizer is formed on the upper surface of the color filter layer. A lower polarizer is formed on the lower surface of the thin-film-transistor layer. To protect display layers such as a glass color filter layer substrate for the color filter layer from damage during polarizer trimming operations, a coating is deposited on a peripheral edge of the glass color filter layer substrate. The coating may be formed from an elastomeric polymer such as silicone and may remain in place or may be removed following trimming operations.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: March 24, 2015
    Assignee: Apple Inc.
    Inventors: Mohd Fadzli A. Hassan, Nathan K. Gupta, Yu-Cheng Chen
  • Patent number: 8970812
    Abstract: Provided are a circular polarizer and a reflective liquid crystal display including the same. The circular polarizer includes a polarizer comprising a polarizing film in which an absorption axis has an angle of about 85° to about 95° with respect to a liquid crystal alignment direction of a liquid crystal cell, where, in CIE coordinates, a color “a” is about ?1 to about ?0.6 and a color “b” is about 0.3 to about 2.5 and a ¼ wavelength plate in which an optical axis has an angle of about 130° to about 140° with respect to the liquid crystal alignment direction of the light crystal cell. When the circular polarizer is used, the visibility and color tone of the reflective liquid crystal display may be improved.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: March 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hyun Nam, Hyuk Yoon, Kyun Il Rah, Moon-Soo Park
  • Publication number: 20140340619
    Abstract: A display device including a display panel, a first polarizer, a second polarizer, a first phase compensation film, and a second phase compensation film is provided. The first polarizer and the second polarizer are disposed on two sides of the display panel. The first polarizer has a first light-absorption axis, and the second polarizer has a second light-absorption axis. The first phase compensation film and the second phase compensation film are disposed between the first polarizer and the second polarizer. The second phase compensation film obeys a first formula: R ? ? ?1 ?1 > R ? ? ?2 ?2 > R ? ? ?3 ?3 , wherein R?1, R?2 and R?3 are horizontal phase retardation values of the second phase compensation film when wavelengths of lights passing through the second phase compensation film are respectively ?1, ?2 and ?3, and ?1<?2<?3.
    Type: Application
    Filed: February 12, 2014
    Publication date: November 20, 2014
    Applicant: AU Optronics Corp.
    Inventor: Ta-Wei Yeh
  • Publication number: 20140327863
    Abstract: A VA-mode LCD device of four domains or less includes a first polarizing film; a first retardation layer; a second retardation layer; a liquid crystal layer; a third retardation layer; and a second polarizing film, wherein the first retardation layer has Re (550) of 190 to 260 nm, and Rth (550) of 80 to 130 nm, a slow axis of the first retardation layer and the absorption axis of the first polarizing film define an angle of 45°, the absolute value of a Re (550) of the second retardation layer is not larger than 10 nm, while a Rth (550) of the second retardation layer is 150 to 350 nm, a Re (550) of the third retardation layer is 190 to 260 nm, while a Rth (550) of the third retardation layer is ?80 to ?130 nm, and a ?nd of the liquid crystal layer is 250 to 450 nm.
    Type: Application
    Filed: April 28, 2014
    Publication date: November 6, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Yujiro YANAI, Yukito SAITOH, Hiroshi SATO
  • Patent number: 8836898
    Abstract: A compensation system for liquid crystal panels and a liquid crystal display are disclosed. The compensation system includes a first biaxial compensation film and a second biaxial compensation film respectively arranged on two sides of the liquid crystal panel. When the wavelength of incident lights is 550 nm, an in-plain retardation value of the first biaxial compensation film is Ro1, a thickness retardation value of the first biaxial compensation film is Rth1, an in-plain retardation value of the second biaxial compensation film is Ro2, and a thickness retardation value of the second biaxial compensation film is Rth2. Wherein 35 nmRo187.5 nm; 80 nmRth1200 nm; 28 nmRo289.6 nm; Y1Rth2Y2; Y1=0.005389×Rth12?2.367048×Rth1+323.45; Y2=?0.003571×Rth12+0.085714×Rth1+226.74. By configuring the retardation values of the double-layers biaxial compensation films, the dark-state light leakage of the liquid crystal panels may be reduced.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: September 16, 2014
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Chih-tsung Kang, Bo Hai
  • Publication number: 20140218668
    Abstract: The present invention provides a liquid crystal display device which enables costs to be reduced, excels in productivity, and enables a high contrast ratio over a wide viewing angle range to be realized.
    Type: Application
    Filed: March 23, 2012
    Publication date: August 7, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Akira Sakai
  • Publication number: 20140218669
    Abstract: A display panel and a display device are disclosed. The display panel comprises a lower substrate, an upper substrate and a liquid crystal layer disposed between the upper substrate and the lower substrate, a lower polarizer is disposed at a light incident side of the lower substrate, an upper polarizer is disposed at a light exiting side of the upper substrate. The display panel further comprises a compensation layer disposed between the upper substrate and the liquid crystal layer and configured for converting a polarization direction of light exiting the upper substrate to the same as the polarization direction of light before incident on the lower substrate.
    Type: Application
    Filed: December 6, 2013
    Publication date: August 7, 2014
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: TERUAKI SUZUKI, YAFENG YANG, KIMAN KIM
  • Publication number: 20140204318
    Abstract: A liquid crystal display (LCD) device includes an LCD panel, a first polarizer arranged on a first side of the LCD panel, a second polarizer arranged on a second side of the LCD panel, and a ?/2 wave plate arranged between the first polarizer and the second polarizer.
    Type: Application
    Filed: February 26, 2013
    Publication date: July 24, 2014
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chihtsung Kang, Bo Hai
  • Publication number: 20140192300
    Abstract: The present invention provides a compensation system for liquid crystal panel and liquid crystal display device. The compensation system includes first biaxial compensation film and second biaxial compensation film, disposed on two sides of liquid crystal panel respectively, first biaxial compensation film having planar compensation value Ro1 for incident light of 550 nm wavelength and compensation value Rth1 along thickness direction, second biaxial compensation film having planar compensation value Ro2 for incident light of 550 nm wavelength and compensation value Rth2 along thickness direction; wherein 15 nm?Ro1?94 nm; 35 nm?Rth1?214 nm; 35 nm?Rth1?214 nm; 14 nm?Ro2?101 nm; Y1?Rth2?Y2; Y1=0.004302×Rth12?1.96894×Rth1+259.7; Y2=?0.00234308×Rth12?0.32227×Rth1+245. As such, the present invention effectively reduces dark state light leakage of liquid crystal panel by disposing biaxial compensation films of appropriate compensation values.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 10, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co.,Ltd.
    Inventors: Chih-tsung Kang, Bo Hai
  • Patent number: 8773621
    Abstract: A liquid crystal device includes a liquid crystal panel including a pair of substrates that sandwiches a liquid crystal layer containing liquid crystal molecules exhibiting a parallel alignment in an initial alignment state, and a polarizing plate disposed on either side of the liquid crystal panel. The liquid crystal molecules are inclined at a pretilt angle and aligned in a predetermined direction in planes of the substrates. The liquid crystal panel emits light entering through one of the polarizing plates toward the other. The liquid crystal panel emits light having the maximum intensity in a direction different from a direction normal to the substrates. The azimuth of the maximum-light-intensity direction projected onto the planes of the substrates is substantially parallel to the predetermined direction.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: July 8, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Osamu Okumura
  • Publication number: 20140176882
    Abstract: A display device comprises a VA liquid crystal display unit as well as a front side polarizer and a rear side polarizer arranged respectively at both side of the VA liquid crystal display unit; wherein the VA liquid crystal display unit has an optical path difference ?nd of 324.3 nm to 305.8 nm at the wavelength of 550 nm; the front side polarizer is arranged at a side in the light-exiting direction of the VA liquid crystal unit; one of the front side polarizer and the rear side polarizer includes the biaxial compensation film, which has an in-plane delay Ro of 50.4-78 nm at the wavelength of 550 nm and a thickness direction delay Rth-b of 168-260 nm at the wavelength of 550 nm. The amount of light leakage is significantly reduced with the contrast close to the horizontal viewing angle obviously increased and the display effect further improved.
    Type: Application
    Filed: October 19, 2012
    Publication date: June 26, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chih-Tsung Kang, Bo Hai
  • Publication number: 20140160407
    Abstract: The present application discloses a display panel, comprising: a first substrate, a second substrate, and a blue phase liquid crystal layer interposed between the first substrate and the second substrate. The first substrate and the second substrate are adapted to generate an electric field in a first direction perpendicular to the display panel. An optical path diverting device is provided between the first substrate and the second substrate, the optical path diverting device is configured so that a light entering the blue phase liquid crystal layer in the first direction from the first substrate is diverted to propagate in the blue phase liquid crystal layer in a second direction parallel to the display panel, and then the light propagating in the second direction is diverted to pass through the blue phase liquid crystal layer and exit from the second substrate in the first direction.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 12, 2014
    Applicant: Boe Technology Group Co., Ltd.
    Inventor: Weili Zhao
  • Publication number: 20140139790
    Abstract: The present invention discloses a compensation system and a liquid crystal display apparatus used for a liquid crystal panel. The compensation system comprises a first biaxial retardation film and a second biaxial retardation film respectively disposed on either side of the liquid crystal panel. An in-plane retardation value of the first biaxial retardation film at a wavelength of 550 nm is Ro1. An out-of-plane retardation value in a thickness direction is Rth1. An in-plane retardation value of the second biaxial retardation film at the wavelength of 550 nm is Ro2. An out-of-plane retardation value in a thickness direction is Rth2. Wherein: 30.8 nm?Ro1?91 nm; 70.4 nm?Rth1?208 nm; 21 nm?Ro2?93.8 nm; Y1?Rth2?Y2; Y1=0.00424817×Rth12?1.9854256×Rth1+277.7: Y2=?0.003333×Rth12?0.033459×Rth1+234.2. The present invention effectively reduces light leakage of the liquid crystal panel in dark mode by disposing the double-layered biaxial retardation films having reasonable retardation values.
    Type: Application
    Filed: November 30, 2012
    Publication date: May 22, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventors: Chih-tsung Kang, Bo Hai
  • Patent number: 8698982
    Abstract: A liquid crystal device includes a first substrate and a second substrate that are arranged so as to face each other, a liquid crystal layer that is pinched between the first substrate and the second substrate, one pair of polarizers that are arranged on both outer sides of the first substrate and the second substrate, a first optical element having a polarization separation function that is disposed in at least one spot of the first substrate, and a display area that contributes to display. The first optical element is arranged outside the display area.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yutaka Tsuchiya, Takumi Seki
  • Publication number: 20140092349
    Abstract: A TN-mode liquid crystal display device, which exhibits reduced grayscale inversion and improved white luminance, including: in sequence, a first polarizer, a first retardation film, a first liquid crystal cell substrate, a TN-mode liquid crystal layer, a second liquid crystal cell substrate, a second retardation film, and a second polarizer, wherein the absorption axis of the first polarizer is orthogonal to the absorption axis of the second polarizer, the slow axis of the first retardation film tilts by about 45° from the absorption axis of the first polarizer, the slow axis of the second retardation film tilts by about 135° from the absorption axis of the second polarizer, the slow axis of the first retardation film is orthogonal to the slow axis of the second retardation film, the first retardation film and the second retardation film have the same Re(550), and the first retardation film has a Re(550) of 5?Re(550)?55.
    Type: Application
    Filed: September 19, 2013
    Publication date: April 3, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Ryo NAKAMURA, Hiroshi SATO
  • Publication number: 20140009708
    Abstract: The present invention discloses a 3D liquid crystal display device and a pixel structure thereof. The pixel structure includes three gate lines, a data line and three pixel electrodes. The gate lines are arranged along a first direction and cross the data line to define three sub-pixel regions. Each of the pixel electrodes includes a primary electrode portion and an extension electrode portion. The primary electrode portion of each of the pixel electrodes is disposed in the corresponding sub-pixel region, and the extension electrode portions of all the pixel electrodes are disposed together in one of the sub-pixel regions. The pixel structure can improve a color washout problem of the 3D liquid crystal display device under top or bottom view angles.
    Type: Application
    Filed: August 8, 2012
    Publication date: January 9, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.
    Inventor: Chia-Yu Lee
  • Patent number: 8558970
    Abstract: A display unit in which the view angle in the horizontal direction of emitting light is wider than the view angle in the vertical direction thereof, in which the emitting light has a polarization component in the vertical direction viewable with the use of a polarized sunglass, and which is able to improve display luminance is provided. A luminance enhancement film has a plurality of convex sections which extend toward the horizontal direction and are arranged in the direction crossing the extending direction, and in which the refractive index in the extending direction is larger than the refractive index in the arrangement direction.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: October 15, 2013
    Assignee: Sony Corporation
    Inventors: Kei Obata, Akihiro Horii, Hiroshi Mizuno, Noriyuki Hirai, Mitsunari Hoshi
  • Publication number: 20130258256
    Abstract: A display apparatus according to an exemplary embodiment of the present invention includes first and second polarization plates, first and second phase delay films, and a liquid crystal display panel. A first polarization plate has a first polarization axis. A second polarization plate faces the first polarization plate and has a second polarization axis forming an angle about 85 degrees to 95 degrees with respect to the first polarization axis. A first phase delay film is disposed between the first and second polarization films and has a third polarization axis forming an angle about 40 degrees to 50 degrees with respect to the second polarization plate. A second phase delay film is disposed between the second polarization plate and the first phase delay film, and has a fourth polarization axis forming an angle about ?5 degrees to 5 degree with respect to the third polarization axis.
    Type: Application
    Filed: September 6, 2012
    Publication date: October 3, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hoi-Lim KIM, Yong-Hwan SHIN, Min-Sik JUNG, Baek-Kyun JEON
  • Patent number: 8462302
    Abstract: An MVA LCD device includes a first alignment region, a second alignment region, a third alignment region, and a fourth alignment region. The liquid crystal molecules disposed in the first alignment region have a first aligning direction, and the azimuth angle of the first aligning direction is substantially between 70 and 110 degrees. The liquid crystal molecules disposed in the second alignment region have a second aligning direction, and the azimuth angle of the second aligning direction is substantially between 160 and 200 degrees. The liquid crystal molecules disposed in the third alignment region have a third aligning direction, and the azimuth angle of the third aligning direction is substantially between 250 and 290 degrees. The liquid crystal molecules disposed in the fourth alignment region have a fourth aligning direction, and the azimuth angle of the fourth aligning direction is substantially between ?20 and 20 degrees.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: June 11, 2013
    Assignee: AU Optronics Corp.
    Inventors: Cho-Yan Chen, Kuan-Chun Huang, Ching-Huan Lin, Ching-Sheng Cheng, Chih-Hung Shih
  • Publication number: 20130107177
    Abstract: The present invention provides a self-focusing liquid crystal cell includes a first glass substrate, a upper transparent electrode, a liquid crystal layer, a lower transparent electrode and a second glass substrate. The upper transparent electrode is shaped as a semi-sphere, while the lower transparent electrode is a planar electrode. A distance between a center of the upper transparent electrode and the lower transparent electrode is smaller than that between periphery of the upper transparent electrode and the lower transparent electrode is greater; the liquid crystal layer is stuffed with negative nematic liquid crystals. The present invention also provides a liquid crystal display. The self-focusing liquid crystal cell and the liquid crystal display equipped with the liquid crystal lens controlled by applied voltage dynamically adjusts the focal length of the liquid crystal lens so as to provide the consistent variation of the gradient refractive index from all angles of view.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 2, 2013
    Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Chihtsung Kang
  • Publication number: 20130100367
    Abstract: Provide is an optical film which includes an optically anisotropic layer having a high-definition alignment pattern, can be readily produced, and is utility. The optical film comprising: a transparent support; an alignment film subjected to a unidirectional alignment treatment; and an optically anisotropic layer formed of one kind of composition mainly containing liquid crystal having a polymerizable group, wherein the optically anisotropic layer is a patterned optically anisotropic layer having first retardation regions and second retardation regions alternately disposed in a plane, and the first retardation regions and the second retardation regions have in-plane slow axes orthogonal to each other.
    Type: Application
    Filed: December 13, 2012
    Publication date: April 25, 2013
    Applicant: FUJIFILM Corporation
    Inventor: FUJIFILM Corporation
  • Patent number: 8351001
    Abstract: First and second polarizers are disposed in cross-Nichol configuration. A liquid crystal cell is disposed between the two polarizers and establishes vertical alignment in a state of no voltage application. An even number of optical films having optical anisotropy and disposed between the liquid crystal cell and first polarizer. A retardation of the liquid crystal cell is in a range between 300 nm and 1500 nm; and each optical film satisfies nx>n?z, an in-plane retardation is smaller than 300 nm, a thickness direction retardation is in a range between 50 nm and 300 nm, an angle between an in-plane slow axis of the optical film disposed nearest to the first polarizer and an absorption axis of the first polarizer is smaller than 45°, and the slow axes of mutually adjacent optical films are perpendicular to each other.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: January 8, 2013
    Assignee: Stanley Electric Co., Ltd.
    Inventor: Yoshihisa Iwamoto
  • Publication number: 20120327336
    Abstract: Disclosed is an organic light emitting display device to prevent deterioration of visibility caused by reflection of incident light and color transition at high viewing angle, and improve transmittance, the organic light emitting display device includes an organic light emitting display panel, and an antireflective member adhered to an outer surface of the organic light emitting display panel, the antireflective member including a reactive liquid crystal layer and a polarizer film which are laminated in this order, wherein the reactive liquid crystal layer has a ?/4 retardation with respect to a transmitted light of the polarizer film.
    Type: Application
    Filed: December 28, 2011
    Publication date: December 27, 2012
    Inventors: Il Jeon, JinHo Kim
  • Publication number: 20120300144
    Abstract: A dual mode LCD device includes first and second substrates facing each other; a first electrode on an inner surface of the first substrate and having a plate shape; a first insulating layer on the first electrode; a second electrode and a third electrode on the first insulating layer, being spaced apart from each other and extending along a first direction; a fourth electrode on an inner surface of the second substrate; and a liquid crystal layer interposed between the first and second substrates and including chiral dopants, wherein liquid crystal molecules of the liquid crystal layer are stably arranged in a first twist state and a second twist state, wherein the first and second twist states are used for a memory mode and the second twist state and a vertical alignment state are used for a dynamic mode.
    Type: Application
    Filed: December 22, 2011
    Publication date: November 29, 2012
    Inventors: Joong-Ha LEE, Wook-Sung Kim, Dong-Guk Kim
  • Publication number: 20120200811
    Abstract: The present invention provides a liquid-crystal display device that can achieve high contrast ratios in a wide range of viewing angles and reduce coloration during black display.
    Type: Application
    Filed: May 20, 2010
    Publication date: August 9, 2012
    Inventors: Akira Sakai, Kazuyoshi Sakuragi, Masahiro Hasegawa