With Integral Optical Element For Guiding Or Distributing Light From The Light Source Patents (Class 349/62)
  • Patent number: 11163192
    Abstract: A display apparatus including a first display surface and a second display surface opposite to each other is provided. The display apparatus includes a reflective display panel and a micro light-emitting diode (LED) panel. The reflective display panel is provided with the first display surface and a visible light transmittance of the reflective display panel is higher than 30%. The micro LED panel is disposed overlapping with the reflective display panel and provided with the second display surface. The micro LED panel includes a drive circuit layer and a plurality of micro LED elements. The drive circuit layer is located between the reflective display panel and the second display surface. The micro LED elements are electrically bonded to the drive circuit layer. A visible light transmittance of the micro LED panel is higher than 50%.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: November 2, 2021
    Assignee: PlayNitride Display Co., Ltd.
    Inventors: Yun-Li Li, Kuan-Yung Liao
  • Patent number: 11163102
    Abstract: A backlight module includes a light guide plate having an upper surface, a lower surface, and light-adjusting structures on the lower surface; an optical sheet disposed opposite to the upper surface of the light guide plate; and a light source disposed adjacent to the light guide plate, wherein a light emitted by the light source has a first brightness distribution in a first direction after passing through the light guide plate, and the first brightness distribution has a first maximum brightness corresponding to a first angle and a second maximum brightness corresponding to a second angle, and an absolute value of the first angle and an absolute value of the second angle are greater than 60 degrees, respectively, wherein an absolute value of a difference between the first maximum brightness and the second maximum brightness is less than or equal to 30% of the first maximum brightness.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 2, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Chao-Fang Chung, Yen-Liang Chen, Chen-Chia Wu, Chao-Chun Huang, Ming-Hui Chu
  • Patent number: 11156764
    Abstract: In view of delamination and other failure mechanisms, bonded assemblies are described herein comprising one or more reinforcement members reducing deflection of the assemblies under applied flexural loads, wherein the reinforcement members do not materially interfere with the functionality of the bonded assemblies. In one aspect, waveguide assemblies are provided. A waveguide assembly, in some embodiments, comprises a waveguide body and light extraction elements bonded to the waveguide body, wherein at least one reinforcement member is coupled to the waveguide assembly at one or more locations to reduce deflection of the waveguide assembly under an applied flexural load.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 26, 2021
    Assignee: IDEAL INDUSTRIES LIGHTING LLC
    Inventors: Claudio Girotto, Theodore Lowes, Chandan Bhat, Mark Youmans
  • Patent number: 11150516
    Abstract: A display according to an embodiment of the disclosure includes a light-emitting device and a display panel unit. The light-emitting device includes a light guide plate, a light source, a reflecting plate, and a dot pattern. The light guide plate has a light-outputting surface including a plurality of band-shaped projections extending in a direction orthogonal to the light-entering end surface. The light source is disposed along the light-entering end surface. The reflecting plate is disposed to face the rear surface of the light guide plate. The dot pattern fixes the light guide plate and the reflecting plate to each other and serves as a light scatterer. The display panel unit includes a display panel, an optical sheet, and a fixing layer. The fixing layer adheres or sticks the display panel and the optical sheet to each other and serves as a light diffuser.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: October 19, 2021
    Assignee: Saturn Licensing LLC
    Inventors: Takeshi Yamamoto, Kouki Miura, Tomoyuki Yoshimatsu
  • Patent number: 11126037
    Abstract: Liquid crystal display panel, display device, operating method are provided.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: September 21, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Zhongxiao Li
  • Patent number: 11127360
    Abstract: A liquid crystal display device comprising, a liquid crystal display panel, a timing controller configured to output a light-source controlling signal during a variable frequency mode comprising a plurality of frames with variable frame frequencies, the light-source controlling signal having a high level during a light-on period preset in an early period of a frame of the plurality of frames and a low level during a light-off period preset to a length according to a frame frequency in a latter period of the frame of the plurality of frames, and a light source configured to emit light during the light-on period and not emit light during the light-off period in response to the light-source controlling signal.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: September 21, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwan-Young Oh, Suk Jin Park, Youngsoo Sohn, Wonhee Lee, Jae Hyoung Park
  • Patent number: 11119268
    Abstract: A backlight module is provided. The backlight module includes a light guide plate; a plurality of reflective gratings on a first side of the light guide plate; and a plurality of reflectors on a second side of the light guide plate. A respective one of the plurality of reflective gratings is configured to diffract and reflect a portion of light totally reflected in the light guide plate into diffracted light transmitting across the light guide plate from the first side toward the second side. A portion of the diffracted light has a respective wavelength range to be received by a respective reflector. The respective one of the plurality of reflectors is configured to reflect the portion of the diffracted light having the respective wavelength range transmitting from the second side toward the first side to a position between the respective grating and an adjacent reflective grating.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: September 14, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xiandong Meng, Jifeng Tan, Xianqin Meng, Qiuyu Ling, Wei Wang, Xiaochuan Chen
  • Patent number: 11112647
    Abstract: The present disclosure provides a display device, a driving method, and an electronic apparatus. The display device includes a backlight module including a substrate and a plurality of LEDs disposed on the substrate, and the plurality of LEDs being configured to emit light having at least one color of red, green, and blue; and a display panel, configured to display red light when the plurality of LEDs emits red light, to display green light when the plurality of LEDs emits green light, and to display blue light when the plurality of LEDs emits blue light. The display device does not require a color resist layer, thereby greatly improving the light transmittance of the display device.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: September 7, 2021
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Ling Wu, Boping Shen
  • Patent number: 11112648
    Abstract: A white light emitting device, including a circuit board; a plurality of light sources mounted on the circuit board, each light source of the plurality of light sources configured to emit monochromatic light; a light converter spaced apart from the circuit board, the light converter configured to convert the monochromatic light emitted from the light sources to white light; and a compensator provided between the circuit board and the light converter, the compensator configured to convert the emitted monochromatic light to white light.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: September 7, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Pil Jeon, Jong-hoi Kim, Kye Hoon Lee, Dae-hee Lee, Byoung-Jin Cho, Suk-ju Choi
  • Patent number: 11112557
    Abstract: A light guide structure is disclosed. The light guide structure includes a first waveguide layer having a first light incident surface and a first light exiting surface. The light guide structure includes a polarization beam-splitting structure on the first light exiting surface, configured to split light into first polarized light and second polarized light. The light guide structure includes a first polarization coupling grating disposed on the first light incident surface and configured to deflect the first polarized light, and a second waveguide layer having a second light incident surface and a second light exiting surface and disposed on the polarization beam-splitting structure. The light guide structure includes a second polarization coupling grating disposed between the second light incident surface and the polarization beam-splitting structure and configured to deflect the second polarized light.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: September 7, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xiandong Meng, Wei Wang, Xiaochuan Chen, Jifeng Tan, Jian Gao, Xianqin Meng, Pengxia Liang
  • Patent number: 11105970
    Abstract: Provided are an optical member, a display device including the same, and method for fabricating the optical member. The optical sheet includes an adhesive layer; and an optical pattern in contact with a first surface of the adhesive layer; and a release film in contact with a second surface of the adhesive layer, opposite to the first surface, wherein the optical pattern comprises a first pattern extending in a first direction, and a plurality of second patterns formed on the first pattern, wherein the first pattern comprises peak portions having a largest thickness and depressed portions having a smallest thickness, and the adhesive layer comprises a third pattern of recesses respectively aligned with the depressed portions of the first pattern, and a fourth pattern of recesses respectively aligned with the plurality of second patterns.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: August 31, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Sul An, Jong Hwan Kim, Seong Yong Hwang
  • Patent number: 11099415
    Abstract: A support part for an LCD display module of an electronic device includes at least one element for receiving a press device for pressing a dummy key. The support part at least one attachment element for securing the part to a printed circuit board of the electronic device such that the press device is compressed between the support part and the printed circuit board.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: August 24, 2021
    Inventors: Marion Froment, Philippe Dedieu
  • Patent number: 11081626
    Abstract: Solid-state lighting devices including light-emitting diodes (LEDs) and more particularly LED packages are disclosed. A light-altering material may be provided in particular configurations within an LED package to redirect light toward a primary emission direction. The light-altering material may be arranged on any of a first face, a second face, or a plurality of sidewalls of an LED chip in the LED package. In certain embodiments, a lumiphoric material may be arranged on one or more of the sidewalls. A superstrate may be arranged to mechanically support the LED chip from the first face. The light-altering material may be arranged on or dispersed within the superstrate. In certain embodiments, the primary emission direction of the LED package is substantially parallel to the second face of the LED chip in the LED package. An overall thickness or height of the LED package may be less than or equal to 0.25 mm.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: August 3, 2021
    Assignee: CreeLED, Inc.
    Inventor: Christopher P. Hussell
  • Patent number: 11073725
    Abstract: The method of manufacturing a light emitting module includes: providing a light guiding plate having a first main surface serving as a light emitting surface; and a second main surface positioned opposite to the first main surface and provided with a recess; providing a light adjustment portion containing a fluorescent material; providing a light emitting element unit in which a light emitting element comprising an electrode is integrally bonded to the light adjustment portion; bonding the light adjustment portion of the light emitting element unit to the recess; and forming wiring on the electrode of the light emitting element.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: July 27, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Toru Hashimoto
  • Patent number: 11048034
    Abstract: An illumination device is disclosed including: a plurality of light guide plate units each including a light guide plate and an LED substrate; and a base to which the plurality of light guide plate units are attached so as to be laid over the base. The attachment surface of the base is divided into sections for attaching the light guide plate units so as to lay the light guide plate units over the base and each section is provided with an IC board for driving the corresponding LED substrate and snap-fit engagement portions for fixing the light guide plate unit to the base. A case for covering the back surface of the light guide plate units formed transparently, and the base is also formed transparently.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: June 29, 2021
    Assignee: OMRON Corporation
    Inventors: Hiroyuki Onitsuka, Junya Fujita, Takehiro Agata
  • Patent number: 11041984
    Abstract: A viewing angle between a wide viewing angle and a narrow viewing angle is switched, and the viewing angle is suppressed from becoming excessively narrow when the viewing angle is switched to the narrow viewing angle. The ultraviolet light guide plate is superimposed on the display panel. A first main surface of the ultraviolet light guide plate is on a side where the pixels are disposed. The film is disposed on the first main surface of the ultraviolet light guide plate. Openings of the film are disposed on an optical path that passes through the pixels and travels in a first direction. Non-opening portions of the film are disposed on an optical path that passes through the pixels and travels in a second direction. The film is made of a photochromic photosensitive material. The ultraviolet light source irradiates an end surface of the ultraviolet light guide plate with ultraviolet light.
    Type: Grant
    Filed: February 4, 2020
    Date of Patent: June 22, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventor: Akimasa Yuuki
  • Patent number: 11035998
    Abstract: A light guide structure is disclosed. The light guide structure includes a first waveguide layer having a first light incident surface and a first light exiting surface. The light guide structure includes a polarization beam-splitting structure on the first light exiting surface, configured to split light into first polarized light and second polarized light. The light guide structure includes a first polarization coupling grating disposed on the first light incident surface and configured to deflect the first polarized light, and a second waveguide layer having a second light incident surface and a second light exiting surface and disposed on the polarization beam-splitting structure. The light guide structure includes a second polarization coupling grating disposed between the second light incident surface and the polarization beam-splitting structure and configured to deflect the second polarized light.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 15, 2021
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xiandong Meng, Wei Wang, Xiaochuan Chen, Jifeng Tan, Jian Gao, Xianqin Meng, Pengxia Liang
  • Patent number: 11028996
    Abstract: There are provided a light emitting unit using a wavelength conversion member which may be put to practical use, and a display and a lighting apparatus which include the light emitting unit. The light emitting unit includes: a light source; an optical part including a light incident surface, the light incident surface facing the light source; a wavelength conversion member provided between the light source and the light incident surface; and a holding member holding the wavelength conversion member at a position between the light source and the light incident surface of the optical part.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: June 8, 2021
    Inventor: Tomoharu Nakamura
  • Patent number: 11022836
    Abstract: The present disclosure relates to a polarizer and a display device. The polarizer includes a polarization layer, a color filter layer located on the polarization layer, wherein the color filter layer includes a quantum dot. The application of the polarizer provided by the embodiments of the present disclosure to the display device can increase the color gamut, the color purity, and the light utilization, thereby improving the display color quality.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: June 1, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaolong Xie, Fengzhen Lv, Xinxia Zhang, Xiao Guo, Qun Li, Huan Ni, Chengpeng Yao
  • Patent number: 11016239
    Abstract: A lighting device includes light guide plates each of which includes a light exit section including a light it surface and a light entering section extending from the light exit section toward a light source row and including an extended end surface as a light entering surface. The light exit section has a thickness dimension that is smaller than that of the light entering section at an extended end thereof. The light guide plates are stacked on each other such that the light exit sections thereof overlap each other seen from a normal direction of the light exit surface. The light entering section of one light guide plate and the light entering section of another light guide plate are disposed next to each other in an arrangement direction of the light sources so as not to overlap each other seen from the normal direction of light exit surface.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: May 25, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hisashi Watanabe, Hirotoshi Yasunaga, Youzou Kyoukane
  • Patent number: 11009646
    Abstract: In one aspect, a film-based lightguide includes a film comprising a light emitting region defined by a plurality of light extracting features, a plurality of coupling lightguide strips extending from the lightguide region of the film, wherein the light mixing region of the film is positioned along the film between the plurality of coupling lightguide strips and the light emitting region, the light mixing region comprises a plurality of interior light directing edges positioned between the lateral edges of the body of the film, wherein the interior light directing edges totally internally reflect light propagating in the light mixing region and redistribute light flux propagating within the lightguide region. In one aspect, pairs of the plurality of interior light directing edges define a plurality of channels that totally internally reflect light propagating therein and are tapered outward toward the light emitting region.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: May 18, 2021
    Assignee: Azumo, Inc.
    Inventors: Anthony Nichol, Zane Coleman
  • Patent number: 11002901
    Abstract: The present disclosure provides a light guide film assembly for a reflective display panel, the light guide film assembly including a light guide film. The light guide film includes a front light exit surface and a rear light exit surface opposite to each other, and a light incident surface connected between the front light exit surface and the rear light exit surface. A plurality of microstructured strips are disposed on the rear light exit surface, and the plurality of microstructured strips are configured to reflect, in a direction away from the rear light exit surface, light transmitted from the light guide film to the plurality of microstructured strips.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: May 11, 2021
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Shuo Wang
  • Patent number: 10989956
    Abstract: A display device includes a light source, a light-directing element, a reflective display element, and a microlens array. The light-directing element is disposed on the transmission path of a lighting beam provided by the light source for projecting the lighting beam toward the first direction. The reflective display element includes a plurality of micro-image units, wherein each micro-image unit converts the lighting beam projected from the light-directing element into an sub-image beam and reflects the sub-image beam. The microlens array is disposed on the transmission path of the sub-image beams, wherein the light-directing element is located between the microlens array and the reflective display element. The microlens array includes a plurality of microlenses. Each sub-image beam pass throughs the light-directing element and is projected to an aperture by the corresponding microlens, and the sub-image beams pass through the aperture to form an image beam.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: April 27, 2021
    Assignee: Coretronic Corporation
    Inventors: Yi-Chien Lo, Hsin-Hsiang Lo, Chuan-Chung Chang, Fu-Ming Chuang
  • Patent number: 10989858
    Abstract: An illumination device according to one or more embodiments may include flat light guide plate units each including: a light guide plate, a light source unit, a cover covering a light emission surface of the light guide plate, and a case positioned on a back surface side of the light guide plate; and a base to which the light guide plate units are attached. The attachment surface may be divided into sections for attaching the light guide plate units such that the light guide plate units are laid over the attachment surface. Each of the sections may be provided with a circuit board for driving the light source unit, and a fixing portion for detachably fixing the light guide plate unit to the base. Each of the light guide plate units includes a visible sheet positioned between the light guide plate and the case.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: April 27, 2021
    Assignee: OMRON Corporation
    Inventors: Hiroyuki Onitsuka, Junya Fujita, Takehiro Agata
  • Patent number: 10983619
    Abstract: A touch display panel, a fingerprint recognition device and a display device are provided. The touch display panel includes: a waveguide plate (001) and a first substrate (003), a liquid crystal layer (004) and an electrode structure (005) between the waveguide plate (001) and the first substrate (003); a reflective layer (006) at a first side of the first substrate (003) facing toward the liquid crystal layer (004), and photosensitive units (007) at the first side, or at a second side of the waveguide plate (001) facing toward the liquid crystal layer (004), the electrode structure (005) controls a refractive index of the liquid crystal layer (004), to allow light to be emitted out from a first surface (001A) of the waveguide plate (001) closer to the liquid crystal layer (004), or allow light to be totally reflected inside the waveguide plate (001), thereby achieving an optical-type touch recognition.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: April 20, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Jifeng Tan
  • Patent number: 10978006
    Abstract: A user terminal device is provided. The user terminal device includes a display, a first sensor provided on a front surface of the user terminal device and configured to detect a front illumination, a second sensor provided on a rear surface of the user terminal device and configured to detect a rear illumination, and a controller configured to adjust a luminance of the display based on the front illumination detected by the first sensor and the rear illumination detected by the second sensor.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: April 13, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-heon Lee, Se-hoon Kim, Jee-young Yeom, Won-hee Choe, Han-tak Kwak, Seo-young Lee
  • Patent number: 10976485
    Abstract: A backlight structure, a manufacturing method thereof, a display device and a mobile terminal are provided. The backlight structure includes a frame and a light shading member, the frame includes a main body, a first bending portion and a second bending portion, the first bending portion protrudes from the main body in a first direction, the second bending portion protrudes from the main body in a second direction, the first direction is opposite to the second direction, the second bending portion is located between two adjacent first bending portions. The frame further includes a hollow portion, the hollow portion is located between the two adjacent first bending portions and further extends to a position where the second bending portion intersects with the main body, and the light shading member is located within the hollow portion.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: April 13, 2021
    Assignees: HEFEI BOE DISPLAY LIGHTING CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xiaoli Xia
  • Patent number: 10957263
    Abstract: According to one embodiment, a display device includes a display panel including a first sub display area and a second sub display area, and an illumination device, wherein the illumination device includes a first light source opposed to the first sub display area, a second light source opposed to the second sub display area, and a partition positioned between the first and second light sources and the display panel, and the partition includes a first side surface surrounding the first light source, a second side surface surrounding the second light source, and a connector which connects the first side surface and the second side surface, and the connector is formed of curved surfaces, or two or more flat surfaces, or a combination of curved surfaces and flat surfaces.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: March 23, 2021
    Assignee: JAPAN DISPLAY INC.
    Inventors: Shigenori Aoki, Tatsuya Yata, Tsutomu Harada
  • Patent number: 10948772
    Abstract: A multiview backlight and a multiview display employ a multibeam element configured to provide a tilted plurality of directional light beams having different principal angular directions corresponding to view directions of a plurality of view in a view zone. The multiview backlight includes a light guide configured to guide light as guided light and the multibeam element configured to couple out a portion of the guided light as the tilted plurality of directional light beams. A tilt angle of the tilted directional light beam plurality is provided by an offset of the multibeam element and a corresponding multiview pixel. The multiview display includes an array of multibeam elements and an array of multiview pixels.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: March 16, 2021
    Assignee: LEIA INC.
    Inventors: David A. Fattal, John Rayfield
  • Patent number: 10928032
    Abstract: A light emitting device (1) comprising a plurality of volume emitting LEDs (21-29) adapted for, in operation, emitting light, a substrate (3) on which said plurality of volume emitting LEDs is arranged, and an optical structure (4) comprising a surface (41) adapted for forming a light exit surface of the light emitting device, a first section (5) arranged such as to extend over said plurality of volume emitting LEDs opposite to the substrate, and a second section (6) comprising a plurality of light redirecting elements (61-68) adapted for redirecting light emitted by the plurality of volume emitting LEDs towards said surface of the optical structure by means of total internal reflection (TIR), the plurality of light redirecting elements (61-68) extending between adjacent volume emitting LEDs of the plurality of volume emitting LEDs and terminating adjacent to the substrate (3).
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: February 23, 2021
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Michel Cornelis Josephus Marie Vissenberg, Jan De Graaf, Grigory Alexandrovich Onushkin, Lambert Johannes Stil
  • Patent number: 10921646
    Abstract: A display device includes a base substrate, a display panel disposed on a first surface of the base substrate, a low-refractive index layer disposed between the first surface and the display panel, a plurality of light source units disposed under a second surface opposite to the first surface of the base substrate, and a plurality of housings that define accommodation recesses and which respectively accommodate the light source units in the accommodation recesses. The light source units are exposed to the base substrate through the accommodation grooves, and the housings are connected to the second surface.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: February 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junwoo Park, Oseung Yang
  • Patent number: 10910454
    Abstract: A display device includes a substrate, regions on the substrate each including a transparent first and a second regions, one or more light-emitting elements disposed in the second region, and a circular polarizing pattern disposed in front of the pixel regions. Each of the one or more light-emitting elements includes a reflective electrode and a transparent electrode layered one above the other, and a light-emitting film provided between the transparent electrode and the reflective electrode. The light-emitting film is configured to emit light in response to electric current supplied between the reflective electrode and the transparent electrode. The circular polarizing pattern covers the entire reflective electrode when seen from the front of the display device. At least a part of the first region is located within a gap in the circular polarizing pattern when seen from the front of the display device.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: February 2, 2021
    Assignees: TIANMA JAPAN, LTD., Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Kazushige Takechi, Hiroshi Tanabe
  • Patent number: 10900766
    Abstract: Capacitive sensing devices are provided that include a sensing pattern of conductive traces disposed upon the surface of a substrate and a first passive circuit element that includes a metallic conductor disposed upon the same surface of the substrate. In some embodiments, the first passive circuit element is a component of an electronic circuit that can be, for example, a low pass filter. Provided capacitive sensing devices are useful, for example, when incorporated into projected touch screen display panels for use on electronic devices.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: January 26, 2021
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Billy L. Weaver, Matthew H. Frey, Lijun Zu, Cristin E. Moran
  • Patent number: 10890790
    Abstract: The present application discloses a repairing method for abnormal pixel spots of a display panel and display apparatus, including steps: installing a polarizing plate between a display panel and a screen of a display apparatus, finding and marking abnormal pixel spots on the polarizing plate, and changing optical polarization structures at the abnormal pixel spots by using specific light rays.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: January 12, 2021
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Chung-Kuang Chien
  • Patent number: 10884282
    Abstract: Transparent display device, manufacturing method and controlling method thereof are provided. The transparent display device includes a light guide plate with a rectangular light exit, and a liquid crystal unit including multiple strip electrodes arranged in parallel and a black matrix; the black matrix includes a first and second strip-shaped light-shielding layers; an arrangement direction of the multiple strip electrodes is not parallel to any edge of the light exit; an orthographic projection of the first strip-shaped light-shielding layer on the light guide plate covers at least a center of the light exit and an extension direction of which is parallel to a first edge of the light exit, and an orthographic projection of the second strip-shaped light-shielding layer on the light guide plate covers at least the center of the light exit and an extension direction of which is parallel to another edge perpendicular to the first edge.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: January 5, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiandong Meng, Jifeng Tan, Wei Wang, Qiuyu Ling, Xianqin Meng, Xiaochuan Chen
  • Patent number: 10884272
    Abstract: Techniques are disclosed to enable an energy-collecting touchscreen unit having a thin, substantially transparent cover layer through which a viewing area within the touchscreen unit can be observed while protecting the touchscreen unit from physical damage. The touchscreen unit has a common base layer disposed beneath the cover layer, and it has at least one touch sensor and a photovoltaic surface. The touch sensor and the photovoltaic surface are affixed to opposite faces of the common base layer. The touchscreen unit also includes an electrical interconnection with both the photovoltaic surface and the touch sensor.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: January 5, 2021
    Inventor: Christopher J. Hanshew
  • Patent number: 10877351
    Abstract: According to one embodiment, a photodetector includes a sensor unit including at least one photosensor, a liquid crystal element including a first substrate includes a plurality of first control electrodes, a second substrate including a second control electrode, and a liquid crystal layer held between the first substrate and the second substrate, a liquid crystal controller which controls a voltage to be applied to the liquid crystal layer for forming a first lens that is opposed to the photosensor in the liquid crystal layer, and a sensor controller which controls the sensor.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: December 29, 2020
    Assignee: Japan Display Inc.
    Inventors: Takayuki Nakanishi, Tatsuya Yata, Takeo Koito
  • Patent number: 10877201
    Abstract: An illumination system employing a waveguide that receives and propagates light in response to transmission and total internal reflection. Light deflecting elements distributed along the propagation path incrementally change the out-of-plane angles of light rays and cause decoupling of portions of light from the waveguide at different distances from the light input edge or end. Light may escape from the waveguide into an intermediate layer at low out-of-plane angles and can be further redirected by light extraction features out of the system. In one embodiment, the illumination system is configured to emit collimated light. In one embodiment, the illumination system includes shallow surface relief features. In one embodiment, the light deflecting elements include forward-scattering particles distributed throughout the volume of the waveguide.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: December 29, 2020
    Assignee: S.V.V. TECHNOLOGY INNOVATIONS, INC.
    Inventor: Sergiy Vasylyev
  • Patent number: 10864705
    Abstract: A liquid crystal laminate includes a substrate including a first diffraction surface and a second base material surface and having optical transparency, a metal layer located on a part of the first diffraction layer, an adhesion layer located on a part of the second base material layer and made of a photocured resin, and liquid crystal layer located on a surface of the adhesion layer at a side opposite to the contact surface of the substrate.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: December 15, 2020
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Koji Ichikawa, Hideki Ochiai
  • Patent number: 10862004
    Abstract: An ultraviolet semiconductor light emitting device includes a semiconductor stack, a trench, a filling insulator, and first and second electrodes. The semiconductor stack includes first and second conductivity-type semiconductor layers and an active layer therebetween that includes an AlGaN semiconductor material. The trench extends through the second conductivity-type semiconductor layer and the active layer to the first conductivity-type semiconductor layer and has a first width. The filling insulator fills the trench such that the filling insulator extends at least through the active layer in the trench and includes of an insulating material having a particular refractive index. The first electrode is connected to the first conductivity-type semiconductor layer, and the second electrode is connected to the second conductivity-type semiconductor layer.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: December 8, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Hwan Park, Mi Hyun Kim, Jong Uk Seo
  • Patent number: 10857783
    Abstract: An image exposure device includes an image display device having pixels, a photosensitive recording medium support portion that supports a photosensitive recording medium for recording an image of the image display device in a state in which an exposure surface of the photosensitive recording medium faces the image display device, a louver film that is provided between the image display device and the photosensitive recording medium support portion, and in which light transmitting portions that transmit light and light shielding portions that block light are alternately arranged in a first direction, and light transmitting portions that transmit light and light shielding portions that block light are alternately arranged in a second direction, and a protective layer that is provided on the louver film on a side of the photosensitive recording medium support portion.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: December 8, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Yoshihisa Usami, Shinichiro Sonoda, Hirotoshi Yoshizawa
  • Patent number: 10859871
    Abstract: Provided is an optical member that can achieve a liquid crystal display apparatus that is excellent in mechanical strength, has an excellent hue, and shows little change in hue dependent on a viewing angle. The optical member includes a prism sheet and an optically functional element that are integrated with each other. The prism sheet has: a first main surface, which is flat; and a second main surface, on which a plurality of unit prisms each having a columnar shape convex toward an opposite side to the first main surface are arrayed. Convex portions formed by the plurality of unit prisms on the second main surface of the prism sheet are bonded to one main surface of the optically functional element.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: December 8, 2020
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Kazuhito Hosokawa
  • Patent number: 10845524
    Abstract: An object is to promote a reduction in thickness of a light guide plate and suppress brightness non-uniformity of the light guide plate. A light guide plate, including: a light exit surface from which light is emitted; an opposite surface on an opposite side of the light exit surface; a depressed portion provided on the opposite surface; and a plurality of scattering portions which are provided on the light exit surface, the opposite surface, and a bottom surface of the depressed portion and which refract and scatter light, wherein the depressed portion has a tapered surface which spreads from the bottom surface of the depressed portion toward an opening of the depressed portion.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: November 24, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Shotaro Watanabe, Kazuhide Hirota, Naoki Ishimi
  • Patent number: 10847098
    Abstract: An information handling system may comprise a liquid crystal display having a plurality of pixels, an electrochromic material layer having a plurality of electrodes disposed between an interior surface of a chassis and a transistor-array layer, and a high reflection layer reflecting light emitted from an LED disposed between the electrochromic material layer and the transistor-array layer away from the interior surface of the chassis. A processor may execute code instructions of an electrochromic material regional backlight unit dimming control system to identify a low-intensity pixel region including a subset of the plurality of pixels associated within high dynamic ratio image data with a low intensity value, identify an electrode of the electrochromic material layer associated with the low-intensity pixel region; and pass a current through the electrode such that a portion of the electrochromic material becomes opaque to the light reflected from the high reflection layer.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: November 24, 2020
    Assignee: Dell Products, LP
    Inventors: Ching-Feng Chen, Meng-Feng Hung, Yi Fan Wang, Tsung-Chin Cheng, Pavel Sergei Olchovik
  • Patent number: 10838134
    Abstract: A multiview backlight and a multiview display employ multibeam elements configured to provide a plurality of light beams having different principal angular directions corresponding to different view directions of the multiview display. The display includes multiview pixels that include sub-pixels. A size of the multibeam element is comparable to a size of a sub-pixel in a multiview pixel of the multiview display.
    Type: Grant
    Filed: June 16, 2018
    Date of Patent: November 17, 2020
    Assignee: LEIA INC.
    Inventors: David A. Fattal, Ming Ma, Xuejian Li
  • Patent number: 10840302
    Abstract: An image sensor includes a first light sensor layer including light sensing cells configured to sense first light of an incident light and generate electrical signals based on the sensed first light, and a color filter array layer disposed on the first light sensor layer, and including color filters respectively facing the light sensing cells. The image sensor further includes a second light sensor layer disposed on the color filter array layer, and configured to sense second light of the incident light and generate an electrical signal based on the sensed second light. Each of the color filters includes a nanostructure including a first material having a first refractive index, and a second material having a second refractive index greater than the first refractive index, the first material and the second material being alternately disposed with a period.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: November 17, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Seunghoon Han, Kwanghee Lee, Yongwan Jin, Yongsung Kim, Changgyun Shin, Jeongyub Lee, Amir Arbabi, Andrei Faraon, Yu Horie
  • Patent number: 10831086
    Abstract: The light source apparatus includes a light source and a wavelength conversion element containing quantum rods capable of converting a first linearly polarized light from the light source into a second linearly polarized light whose wavelength is different from that of the first linearly polarized light3. The apparatus further includes a changer configured to change a polarization direction of the first linearly polarized light entering the quantum rods.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: November 10, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Minoru Ohkoba
  • Patent number: 10831062
    Abstract: To provide a luminous flux control member capable of mitigating effects of leg parts on a luminance distribution in the luminous flux control member. [Solution] Provided is a luminous flux control member that controls distribution of light emitted from a light source. The bottom surface positioned on the light source side of the luminous flux control member has at least an inclined section inclined upward from the central axis side toward the periphery side of the luminous flux control member. Leg parts protruding toward the light source side are arranged on the inclined section. At least a part of the back side of the side surface of each leg part relative to the central axis includes a plane or a curved surface protruding toward the central axis side or toward the periphery side and having a radius of curvature equal to or greater than a radius of curvature of a central circumscribed circle that is centered around the central axis and that is tangent to the back side of the side surface of the leg part.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: November 10, 2020
    Assignee: Enplas Corporation
    Inventor: Haruto Nagami
  • Patent number: 10824010
    Abstract: The present disclosure provides a backlight module and a display apparatus. The backlight module of the present disclosure may connect at least one of the diffuser film, the lower anti-reflection film and the upper anti-reflection film with the middle frame so as to avoid the problems of drop-off or movement of the at least one of the diffuser film, the lower anti-reflection film and the upper anti-reflection film. Thus, the solidity and the stability of the at least one of the diffuser film, the lower anti-reflection film and the upper anti-reflection film may be improved. The problems of uneven light distribution due to drop-off and movement of the at least one of the diffuser film, the lower anti-reflection film and the upper anti-reflection film may be avoided.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: November 3, 2020
    Assignee: HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Quan Li
  • Patent number: 10816718
    Abstract: A display device including a back plate, a light emitting module, a light guide plate and a fixing member is provided. The back plate has an inner surface and an outer surface opposite to the inner surface. The light emitting module is disposed on a side of the inner surface of the back plate. The light guide plate is disposed opposite to the inner surface of the back plate. The fixing member includes a portion, which leans on the outer surface of the back plate.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: October 27, 2020
    Assignee: Qisda Corporation
    Inventor: Hsiao-Yun Chen