Patents Examined by David Y. Chung
-
Patent number: 11556030Abstract: According to one embodiment, a liquid crystal display device includes a first liquid crystal device, a second liquid crystal device, and a liquid crystal display panel, the first liquid crystal device including a first substrate including a first electrode thereon, a second substrate including a second electrode thereon, and a first cholesteric liquid crystal layer, the second liquid crystal device including a third substrate including a third electrode thereon, a fourth substrate including a fourth electrode thereon, and a second cholesteric liquid crystal layer, wherein the first liquid crystal device and the second liquid crystal device are stacked successively.Type: GrantFiled: March 25, 2022Date of Patent: January 17, 2023Assignee: JAPAN DISPLAY INC.Inventors: Kasumi Hase, Koichi Igeta, Shinichi Komura
-
Patent number: 11526050Abstract: A display device is provided. The display device includes a first substrate, a first display structure disposed on the first substrate and a second display structure disposed on the first substrate. The first display structure and the second display structure are different from each other and are selected from a liquid-crystal display, an organic light-emitting diode display, an inorganic light-emitting diode display or a laser display. The display device also includes a first polarizing structure. The first polarizing structure is disposed on the first display structure and the second display structure.Type: GrantFiled: May 7, 2018Date of Patent: December 13, 2022Assignee: INNOLUX CORPORATIONInventors: Jia-Yuan Chen, Kuan-Feng Lee, Tsung-Han Tsai, Yuan-Lin Wu
-
Patent number: 11520197Abstract: An active-pixel device assembly with stray-light reduction includes an active-pixel device including a semiconductor substrate and an array of active pixels, a light-transmissive substrate disposed on a light-receiving side of the active-pixel device, and a rough opaque coating disposed on a first surface of the light-transmissive substrate and forming an aperture aligned with the array of active pixels, wherein the rough opaque coating is rough so as to suppress reflection of light incident thereon from at least one side. A method for manufacturing a stray-light-reducing coating for an active-pixel device assembly includes depositing an opaque coating on a light-transmissive substrate such that the opaque coating forms a light-transmissive aperture, and roughening the opaque coating to form a rough opaque coating, said roughening including treating the opaque coating with an alkaline solution.Type: GrantFiled: May 15, 2020Date of Patent: December 6, 2022Assignee: OmniVision Technologies, Inc.Inventors: Chun-Sheng Fan, Wei-Feng Lin
-
Patent number: 11520184Abstract: A color conversion display panel includes: a color conversion layer provided on a substrate and including a semiconductor nanocrystal and a scatterer; and a transmission layer provided on the substrate, wherein the semiconductor nanocrystal is included at greater than 30 wt % of an entire content of the color conversion layer, and the scatterer is included at equal to or less than 12 wt % of the entire content of the color conversion layer.Type: GrantFiled: February 21, 2018Date of Patent: December 6, 2022Inventors: Won Woo Jang, Jin Ho Park, Won Sik Oh, Hyang-A Park, Seung In Baek, Seoung Bum Pyoun, Jae Min Ha, Hyun Ji Ha
-
Patent number: 11513397Abstract: A manufacturing method of a liquid crystal display panel includes vertically irradiating a first substrate and a second substrate with ultraviolet light for alignment. An energy compensation device is formed and/or placed in an irradiation direction of the ultraviolet light. An angle difference of pretilt angles between liquid crystal molecules inside the first substrate and liquid crystal molecules inside the second substrate is greater than a preset angle. An energy intensity inside the first substrate or inside the second substrate is controlled by the energy compensation device, so that pretilt angle difference between the liquid crystal molecules inside the first substrate and the liquid crystal molecules inside the second substrate is large.Type: GrantFiled: August 11, 2020Date of Patent: November 29, 2022Assignee: Shenzhen China Stor Optoelectronics Semiconductor Display Technology Co., Ltd.Inventors: Min Huang, Jianhong Chen
-
Patent number: 11513403Abstract: A liquid crystal panel (display panel) 11 includes a display area AA configured to display images, a non-display area NAA outside the display area AA, a light blocking layer (a light blocking portion) 11i disposed at least in the non-display area NAA and configured to block light, a signal line connection line (a narrow line portion) 29 where lines are arranged at intervals in the non-display area NAA, and a common electrode connection line portion (a wide line portion) 30 disposed in the non-display area and having a line width greater than that of the signal line connection line 29 and including empty portions 34.Type: GrantFiled: April 23, 2021Date of Patent: November 29, 2022Assignee: SHARP KABUSHIKI KAISHAInventors: Ryosuke Yuminami, Masakazu Miyamoto, Masahiro Yoshida, Masayuki Takashima, Toshiaki Fujihara
-
Patent number: 11506940Abstract: A transmittance-variable layer and a transmittance-variable device including the same are disclosed herein. In some embodiments, a transmittance-variable device includes a polarization layer and a transmittance-variable layer disposed on the polarization layer, wherein the transmittance-variable layer includes a first base layer disposed on the polarization layer and a spacer fixed on a surface of the first base layer opposite to the polarization layer, and a second base layer facing the first base layer and spaced apart from the first base layer by the first spacer, wherein the first spacer maintains a gap between the first and second base layers, and a first light modulating material disposed in the gap.Type: GrantFiled: November 28, 2018Date of Patent: November 22, 2022Inventors: Jung Woon Kim, Su Young Ryu, Byoung Kun Jeon, Yong Sung Choi, Seong Min Lee, Hye Min Yu
-
Patent number: 11493801Abstract: According to one embodiment, a display device comprises a liquid crystal layer held between a first substrate and a second substrate, a display region having a first region in which a plurality of pixels are provided, a non-display region provided in an island-like shape in the display region and having a second region, a first polarizer and a second polarizer that overlap the first region, and a third polarizer and a fourth polarizer that overlap the second region, wherein a transmission axis of the fourth polarizer and a transmission axis of the second polarizer form an angle other than 0° and other than 90° with each other.Type: GrantFiled: December 1, 2021Date of Patent: November 8, 2022Assignee: JAPAN DISPLAY INC.Inventor: Mitsutaka Okita
-
Patent number: 11487057Abstract: An optical substrate and a display device are provided. The optical substrate includes a light guide plate and a plurality of light selection units, wherein, the light guide plate includes a light-incident surface and a light-exiting surface, and the light-exiting surface includes a plurality of light-exiting regions; each light selection unit is configured to select light incident from the light-incident surface and propagating in the light guide plate, such that monochromatic light of different colors are emitted from multiple light-exiting regions corresponding to the each light selection unit, and each of the multiple light-exiting regions emits monochromatic light of a single color.Type: GrantFiled: October 31, 2019Date of Patent: November 1, 2022Assignee: Beijing BOE Technology Development Co., Ltd.Inventors: Xiandong Meng, Wei Wang, Xianqin Meng, Jifeng Tan, Xiaochuan Chen
-
Patent number: 11487163Abstract: This application discloses a display panel and a display apparatus. The display panel includes: a substrate; a seal, arranged around a non-display region of the substrate, to form a sealing region; a peripheral component, exposed out of the sealing region; and a protection component, covering the peripheral component. The peripheral component includes a metal line and a black matrix. The protection component includes a seal, a support spacer, a Tuffy adhesive, a black adhesive, and a passivation layer. The Tuffy adhesive is attached on a side portion of the substrate, to completely cover the metal line and the black matrix.Type: GrantFiled: November 21, 2018Date of Patent: November 1, 2022Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Jia-Ren Lin
-
Patent number: 11480836Abstract: A liquid crystal on silicon device is described. The liquid crystal on silicon device includes a plurality of mirror electrodes, a transparent electrode, a liquid crystal material, and a plurality of microlenses. The plurality of mirror electrodes are arranged periodically to form an array of pixels, each pixel included in the array of pixels configurable to reflect incident light. The transparent electrode is optically aligned with the plurality of mirror electrodes. The liquid crystal material is disposed between the transparent electrode and the plurality of mirror electrodes. The plurality of microlenses are optically aligned with the plurality of mirror electrodes. Each microlens included in the plurality of microlenses is positioned to focus the incident light on a respective one of the plurality of mirror electrodes.Type: GrantFiled: May 1, 2020Date of Patent: October 25, 2022Assignee: Omnivision Technologies, Inc.Inventors: Alireza Bonakdar, Libo Weng, Badrinath Padmanabhan
-
Patent number: 11467327Abstract: The present disclosure provides numerous applications for the use of liquid crystal polarization gratings (LCPGs) to controllably steer light. When combined with an image sensor, light generated or reflected from different fields of view (FOV) can be steered, allowing an increase in the FOV or the resolution of the image. Further, the LCPG can stabilize the resulting image, counteracting any movement of the image sensor. The combination of LCPGs and liquid crystal waveguides (LCWGs) allows fine deflection control of light (from the LCWG) over a wild field of view (from the LCPG). Further applications of LCPGs include object tracking and the production of depth images using multiple imaging units and independently steered LCPGs. The LCPG may be used in controlling both the projection and reception of light.Type: GrantFiled: February 17, 2020Date of Patent: October 11, 2022Assignee: Analog Devices International Unlimited CompanyInventors: Eoin E. English, Andrew William Sparks, Scott Robert Davis, Tyler Adam Dunn, Maurizio Zecchini, Michael Ziemkiewicz, Ronald A. Kapusta, Javier Calpe Maravilla, Paul O'Sullivan, Jonathan Ephraim David Hurwitz, Erik D. Barnes, Monica Redon Segrera, Krystian Balicki
-
Patent number: 11460733Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.Type: GrantFiled: September 30, 2020Date of Patent: October 4, 2022Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
-
Patent number: 11454850Abstract: A pixel electrode and a display panel are provided. The pixel electrode includes a sub-pixel region and a main pixel region arranged at intervals. The sub-pixel region includes a first sub-pixel region and a second sub-pixel region, wherein a receiving chamber is formed between the first sub-pixel region and the second sub-pixel region, and the main pixel region is disposed in the receiving chamber.Type: GrantFiled: March 19, 2020Date of Patent: September 27, 2022Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Yoonsung Um, Kaili Qu
-
Patent number: 11442199Abstract: An optical film can be used in a display panel as a viewing angle diffusion film. The optical film includes a first electrode layer, an isotropic optical material layer, a liquid crystal material layer and a second electrode layer that are stacked. A plurality of groove structures are disposed on the isotropic optical material layer, and each of the groove structures is filled with the liquid crystal material layer.Type: GrantFiled: May 29, 2020Date of Patent: September 13, 2022Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Hu Dou, Ziping Wu, Gang Yu
-
Patent number: 11442331Abstract: A mobile communication apparatus, an optical assembly, and an aperture module thereof are provided. The aperture module includes a first liquid crystal (LC) aperture unit and a second LC aperture unit. The first LC aperture unit includes a first LC layer and two first transparent electrode layers disposed on two sides of the first LC layer. At least one of the first transparent electrode layers has a first opening. The second LC aperture unit includes a second LC layer and two second transparent electrode layers disposed on two sides of the second LC layer. At least one of the second transparent electrode layers has a second opening having a central axis overlapped with that of the first opening. The aperture module is configured to control each of the first switch region and the second switch region to be at a light permeable state or a light shield state.Type: GrantFiled: June 5, 2020Date of Patent: September 13, 2022Assignee: SILICON TOUCH TECHNOLOGY INC.Inventor: Chi-Yuan Chin
-
Patent number: 11429008Abstract: According to various embodiments, a tunable optical metasurface includes an array of elongated resonator rails arranged parallel to one another. Liquid crystal is positioned within an optical field region between adjacent resonator rails. A controller can selectively apply a voltage differential pattern to the elongated resonator rails to adjust a phase response thereof. According to various embodiments, a cross-backplane reflector is utilized that allows for mid-array routing or edge-array routing of electrical connections between the controller and the resonator rails. The cross-backplane reflector comprises a plurality of elongated optical reflectors extending parallel to one another and perpendicular to the array of resonator rails. An optically transmissive (e.g., transparent) dielectric may electrically separate the resonator rails from the optical reflectors. A pattern of vias formed therein facilitates electrical connections between the optical reflectors and the resonator rails.Type: GrantFiled: March 3, 2022Date of Patent: August 30, 2022Assignee: Lumotive, LLCInventors: Gleb M. Akselrod, Erik Edward Josberger, Mark C. Weidman, Prasad Padmanabha Iyer
-
Patent number: 11422409Abstract: An optical waveplate is provided. The optical waveplate includes a first birefringent film including optically anisotropic molecules arranged to form a first twist structure. The optical waveplate also includes a second birefringent film including optically anisotropic molecules arranged to form a second twist structure, the second birefringent film being stacked with the first birefringent film. The optically anisotropic molecules at a first portion of the first birefringent film adjacent an interface between the first birefringent film and the second birefringent film are configured with a first azimuthal angle. The optically anisotropic molecules at a second portion of the second birefringent film adjacent the interface are configured with a second azimuthal angle. The first azimuthal angle is substantially the same as the second azimuthal angle.Type: GrantFiled: April 17, 2020Date of Patent: August 23, 2022Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Jacques Gollier, Fenglin Peng, Junren Wang, Lu Lu
-
Patent number: 11402695Abstract: A liquid crystal display apparatus having improved viewing angle characteristics in a region vertically asymmetrical. A liquid crystal display apparatus of the present invention includes: a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules aligned in homogeneous alignment under a state in which an electric field is absent; a first polarizer arranged on a viewer side of the liquid crystal cell; a second polarizer arranged on a back surface side of the liquid crystal cell; a first optical compensation layer arranged between the liquid crystal cell and the first polarizer; and a second optical compensation layer arranged between the liquid crystal cell and the first optical compensation layer. A refractive index nz1 in a thickness direction of the first optical compensation layer is less than 1.5187, and a refractive index nz2 in a thickness direction of the second optical compensation layer is less than 1.5340.Type: GrantFiled: April 20, 2018Date of Patent: August 2, 2022Assignee: NITTO DENKO CORPORATIONInventors: Ryo Kawamura, Takehito Fuchida, Katsunori Takada, Yoshitsugu Kitamura
-
Patent number: 11366358Abstract: A display apparatus includes a display panel and a switching panel disposed outside the display panel. The switching panel includes a first base, first and second electrodes disposed on the first base, a second base, third and fourth electrodes disposed on the second base, and a liquid crystal layer disposed between the first base and the second base. When the display apparatus is operated in a first anti-peep mode, the first electrode and the second electrode disposed on the first base have a first AC driving signal and a second AC driving signal respectively, and the third electrode and the fourth electrode disposed on the second base have DC reference signals respectively, wherein the first AC driving signal and the second AC driving signal are in synchronization.Type: GrantFiled: June 4, 2020Date of Patent: June 21, 2022Assignee: Au Optronics CorporationInventors: Cian-Rou Wu, Kun-Cheng Tien, Chien-Huang Liao, Chin-An Lin