Having Light-filtering Means Patents (Class 200/311)
  • Patent number: 10910176
    Abstract: A control device configured for use in a load control system to control an external electrical load may provide simple feedback regarding the operation of the control device. For example, the control device may comprise a base portion configured to be mounted to an electrical wallbox or over a mechanical switch, and a control unit connected to the base portion. The control unit may comprise a rotation portion rotatable with respect to the base portion, an actuation portion, and a light source. The control unit may be configured to control the light source to illuminate at least an illuminated portion of the actuation portion in response to actuations of the rotation portion and the actuation portion. In addition, the control unit may provide a limit indication on the illuminated portion by blinking the illuminated portion when the electrical load has reached a limit.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: February 2, 2021
    Assignee: Lutron Technology Company LLC
    Inventors: Gregory S. Altonen, Chris Dimberg, Jason C. Killo, Matthew Knauss, Michael W. Pessina, Daniel L. Twaddell
  • Patent number: 10787279
    Abstract: A test apparatus is provided for testing a sensorless check device of an actuator. The sensorless check device is arranged to be used by mechanically moving a check device pin from a resting position to an actuation position and then releasing the check device pin to allow it to return to a resting position urged by an elastic return mechanism. The test apparatus comprises: a piston for contact with an actuator surface associated with the check device pin; a piston spring for urging the piston toward the actuator surface, wherein the piston spring is softer than the elastic return mechanism of the check device; and an adjustment and testing mechanism.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: September 29, 2020
    Assignee: GOODRICH ACTUATION SYSTEMS SAS
    Inventors: Thomas Moulon, Quentin Ricard
  • Patent number: 10744593
    Abstract: An illuminated film-covered keyboard includes: a backlit keyboard module which includes a plurality of keys that are light-permeable, and at least one backlight source; a frame body disposed on the backlit keyboard module, the frame body including a key area, wherein the top surface of each of the plurality of keys is exposed at the key area; and a cover film disposed at the key area and on top of the top surface of each of the plurality of keys, wherein the cover film includes a light-permeable film, a base color layer, a light-shielding layer that is opaque, and a protection layer disposed on a side of the light-shielding layer opposing the base color layer, and wherein the portions of the light-shielding layer that respectively correspond to each of the plurality of keys are removed so as to form a plurality of light-transparent patterns.
    Type: Grant
    Filed: May 27, 2017
    Date of Patent: August 18, 2020
    Assignees: LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, LITE-ON TECHNOLOGY CORPORATION
    Inventors: Ming-Fu Yen, Hong-Chao Kan, Chia-Shiun Wu
  • Patent number: 10676968
    Abstract: Systems and methods for operating a tag. The methods comprise: actuating a telescoping actuator of the tag to transition a pin from an unengaged position in which the pin is retracted into a first portion of the tag's housing to an engaged position in which the pin extends through an insert space and into a second portion of the tag's housing; and mechanically securing the pin in the engaged position using a securement mechanism disposed in the second portion of the tag's housing. The pin is securely coupled to a movable component of the telescoping actuator so as to be integrated into the tag's body, and the first and second portions of the tag's housing are coupled to each other so as to form a unitary piece.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: June 9, 2020
    Assignee: SENSORMATIC ELECTRONICS, LLC
    Inventors: Channing E. Miller, Sergio M. Perez, Adam S. Bergman
  • Patent number: 10276326
    Abstract: An item may have regions that are illuminated by light from a light source. The light source may be based on components such as light-emitting diodes. Diffusing material, luminescent material, and other light-adjusting materials may be incorporate into the item. The item may include movable structures such as movable keyboard key members. Light-emitting diodes may be mounted on a substrate. The substrate may be coupled to keyboard key members, additional substrates, or other structures in an item. The item may include a layer of fabric and layers of other material. Openings in the layers of material may be configured to receive light-emitting diodes. Opaque layers of material may have patterned openings that help define shapes for the illuminated regions.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: April 30, 2019
    Assignee: Apple Inc.
    Inventors: Paul X. Wang, Craig C. Leong, Joel N. Ruscher, Reza Nasiri Mahalati, Liquan Tan
  • Patent number: 10248151
    Abstract: A seamless button including a guiding element, a movable actuating element and a switch located on a mounting plate. The movable actuating element is made of elastic material with a massive middle shaft spaced from the inner walls of the chamber by an air gap. It has an upper actuating surface and crimp surrounding the actuating surface above the air gap. It also has a profile area at the outer circumference of the movement crimp, where the horizontally outwardly extending portion of the profile area rests on top of the outer wall, the downwardly extending portion of the profile area rests on the outside of the outer profile edge and the protrusion rests on the pedestal covering it at least partially. A seamless multi-button is also disclosed, with a method for manufacturing seamless buttons.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: April 2, 2019
    Assignee: Ableton AG
    Inventor: Oliver Harms
  • Patent number: 10242815
    Abstract: A push switch capable of indicating a push state comprises a cap, movable stand, base, connecting member, light-emitting module, resilient component, circuit unit, and casing. The cap comprises a surface layer onto which a first UV ink layer, translucent chromium-plated layer, and second UV ink layer are sprayed sequentially. The connecting member is light-penetrable and fitted to the bottom of the cap. The movable stand comprises a body, connecting end portion connected to the connecting member, and limiting portion extending laterally from the body. The movable stand moves whenever the cap is pushed. The base has therein a receiving space. The light-emitting module, resilient component, and circuit unit are disposed in the receiving space. After at least one light-emitting component of the light-emitting module has emitted light, brightness and color of the light emitted is visible through the cap to indicate the push state of the push switch.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: March 26, 2019
    Inventor: Ching-Hsiung Chu
  • Patent number: 10224157
    Abstract: An illuminated glass keycap having a glyph diffuser layer that may diffuse light through a glyph window opened in a background layer. The background layer may be opaque and the glyph window may be transparent. The keycap is adhered to a scissor mechanism positioned above electrical switch circuitry. Included within, below, or adjacent to the scissor mechanism may be one or more light sources positioned to emit light through the keycap, around the perimeter of the keycap, and/or through the background layer.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: March 5, 2019
    Assignee: APPLE INC.
    Inventors: Craig C. Leong, Derrick T. Jue, Hilbert T. Kwan, Keith J. Hendren
  • Patent number: 10121613
    Abstract: A keyswitch device includes a base plate, a membrane circuit board, a light source, and a keyswitch assembly. The membrane circuit board is disposed on the base plate and includes a reflective film layer, a transmissive film layer, and a light guide spacer. The reflective film layer is located on the base plate. The transmissive film layer is located over the reflective film layer. The light guide spacer has an accommodating space. The reflective film layer and the transmissive film layer are respectively located at opposite sides of the light guide spacer. The light source is disposed between the reflective film layer and the transmissive film layer and located in the accommodating space. The keyswitch assembly is disposed on the membrane circuit board.
    Type: Grant
    Filed: August 12, 2016
    Date of Patent: November 6, 2018
    Assignee: Chicony Electronics Co., Ltd.
    Inventors: Pao-Chin Alan Chen, Ching-Cheng Tsai, Tsung-Min Chen, Pai-Hsiang Wang, Chun-Wei Lu
  • Patent number: 10024520
    Abstract: Provided is an illumination device containing a light source configured to emit an excitation light, a phosphor layer containing a phosphor and configured to allow the excitation light of the light source to be transmitted and emitted therethrough, and a coating film formed by applying a paint containing a pigment and mica and configured to allow the emitted light of the phosphor layer to be transmitted and emitted therethrough, in which the coating film has a light transmission spectrum having a peak wavelength located between a peak wavelength of an emission spectrum of the light source and a peak wavelength of an emission spectrum of the phosphor layer.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: July 17, 2018
    Assignees: TOYODA GOSEI CO., LTD., ORIGIN ELECTRIC COMPANY, LIMITED
    Inventors: Koji Nakatani, Yuichi Nishimura, Ryuji Nakanishi
  • Patent number: 9984834
    Abstract: A method of manufacturing keycaps, each keycap having a top and a skirt, includes: providing a first jig having a plurality of positioning units; arranging correspondingly a plurality of keycaps onto the plurality of positioning units; attaching a first film including an ink layer and a first release layer to the plurality of keycaps by using an out-mold transfer technique, such that the first film covers respective upper surfaces of the tops and respective side surfaces of the skirts of keycaps; removing the first release film; laser-engraving the ink layer; and forming a protection layer on the laser-engraved ink layer. A keycap manufactured by the method of the present invention is also disclosed.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: May 29, 2018
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Tsai-Jung Hu, Shih-Kai Chen
  • Patent number: 9941062
    Abstract: To provide a key switch structure where the outline of a key top becomes well-defined. A reflection sheet is adhered on top of a membrane sheet, so that light reflected by a back surface of a key top is reflected by the reflection sheet and emitted toward the outer side of the outer periphery of the key top. Because of this, the outer side of the key top is lighted up and the outline of the key top becomes well-defined.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: April 10, 2018
    Assignee: JIANGSU TRANSIMAGE TECHNOLOGY CO., LTD.
    Inventor: Shigeru Yamada
  • Patent number: 9520257
    Abstract: A faceplate assembly is provided. The faceplate assembly includes a faceplate having planar member with a first side and a second side, the planar member having a number of openings therethrough, the planar member first side having a number of opaque portions and a number of translucent portions, each planar member first side translucent portion disposed adjacent one planar member opening, a number of sources of localized illumination, each the source of localized illumination disposed adjacent the planar member second side and adjacent a planar member first side translucent portion, and wherein the source of localized illumination may be illuminated causing a selected planar member first side translucent portion to be illuminated.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: December 13, 2016
    Assignee: LABINAL, LLC
    Inventors: Patrick Wellington Mills, James Michael McCormick
  • Patent number: 9007307
    Abstract: Techniques and apparatus to provide improved visibility to user input devices, such as keys, are disclosed. In low light conditions, keys can be difficult to distinguish. For example, often keys have legends on them to visually distinguish them from one another, but in low light conditions it can be difficult for users to visually distinguish the different keys. The legends can be textual and/or graphic. Hence, according to one embodiment, light from a nearby display device can be used to provide illumination to the user input devices (e.g., keys). More particularly, in one embodiment, some light from the nearby display device can be directed towards and reflected from the user input devices (e.g., keys) to enhance visibility of the keys or the legends thereon.
    Type: Grant
    Filed: August 9, 2010
    Date of Patent: April 14, 2015
    Assignee: Apple Inc.
    Inventors: Ronald Moller, John T. Payne, Liliya Lyandres, Michael Nashner, Kenichi Nakajima, Tsao Lun Chung
  • Patent number: 8723063
    Abstract: A button assembly for displaying an illuminated symbol with a locking ring having an outer surface. A solid light guide is positioned within and spaced apart from the locking ring. The light guide has a top surface for displaying an illuminated symbol and a bottom surface with a light receiving member having a refracting surface with a first lens member for receiving and directing light to the top surface of the light guide. A resilient sealing member is mounted on the locking ring and interconnects the locking ring and the light guide. The sealing member has an unsupported portion that facilitates movement of the light guide relative to the locking ring.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: May 13, 2014
    Assignee: The Gillette Company
    Inventors: Fred Schnak, Stefan Rehbein, Gerd Laschinski, Klaus Günther Amsel, Werner Hübscher, Herbert Lessiak
  • Patent number: 8698754
    Abstract: A keypad for an electronic device and manufacturing method thereof having at least one or more ink layers which selectively let pass or cut off a light wavelength of at least one or more light emitting diodes generating light in accordance with an opened or closed direction of a folder. At least one or more light emitting elements for generating light in various colors are provided, and a diffusion ink layer is arranged above the light emitting elements. At least one or more ink layers provided on the diffusion ink layer, wherein the ink layers selectively let passes or cut-off light wavelengths of the light emitting elements when the folder is rotated or slid in a longitudinal or perpendicular direction. A transparent or semi-transparent ink layer is provided on the ink layers, and a sheet film layer is provided on the transparent or semi-transparent ink layer.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: April 15, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-Suk Rhyu, Shin-Chul Kang, Sung-Sun Park, Jae-Chul Jin
  • Patent number: 8680413
    Abstract: An illuminating push-button device includes a key-top part having a key-top surface and a first protrusion that protrudes from a back side of the key-top surface. The device also includes a key rubber part made of a transparent or semi-transparent elastic material and having a second protrusion that receives the first protrusion, the second protrusion being oriented in a common direction as the first protrusion. A switching device is included that opposes the second protrusion and is configured to be actuated in response to the key-top part being depressed. A light-source element emits light from a light-emitting surface and cooperates with a light-blocking sheet disposed between the light-source element and key rubber part and covers at least a portion of the light-emitting surface of the light-source element and has a loose hole through which the second protrusion of the key rubber part is passed.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: March 25, 2014
    Assignees: Sony Corporation, Sony Mobile Communications AB
    Inventor: Hiroyuki Taniguchi
  • Patent number: 8674247
    Abstract: A switch panel with an indicator is disclosed. The switch panel has a transparent region. There is a light source disposed in the switch panel for emitting light when turning off a switch body. A shape of the transparent region is projected onto the wall for forming a large area of indicating pattern, and this can replace a night light. The drawback of a luminous region in prior art which is limited to be on the switch body or on the switch panel is solved.
    Type: Grant
    Filed: October 14, 2011
    Date of Patent: March 18, 2014
    Assignee: National Taiwan University of Science and Technology
    Inventors: Hung-jung Lin, Shao-lun Chao, En-chuan Tsui, Wen-chih Chang, Rung-huei Liang
  • Publication number: 20140008188
    Abstract: A switch unit including operating keys, an LCD that displays an image, lenses that are disposed between the LCD and the operating keys and show the image displayed by the LCD on the operating surfaces of the operating keys, a PCB having contacts that detect when an operating key has been depressed, and a rubber that is disposed between the operating keys and the PCB.
    Type: Application
    Filed: January 18, 2012
    Publication date: January 9, 2014
    Applicant: OMRON CORPORATION
    Inventors: Hitoshi Sakamoto, Junya Fujita
  • Patent number: 8592702
    Abstract: A illuminant keyboard device includes a bottom frame having a plurality of latch parts, a plurality of keying units disposed on the bottom frame, a membrane switch interposed between the bottom frame and the keying units, a light guide plate interposed between the membrane switch and the bottom frame, a least a light source disposed on predetermined position of the light guide plate, a plate interposed between the membrane switch and the light guide plate and a light-shielding plate interposed between the membrane switch and the keying units. The light guide plate has a plurality of first holes and the plate has a plurality of second holes, the diameter of each of the first holes is larger than the diameter of each of the second holes.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: November 26, 2013
    Assignee: Chicony Electronics Co., Ltd.
    Inventor: Ching-Cheng Tsai
  • Patent number: 8506101
    Abstract: A switch panel having a panel member and at least one switch member, wherein the panel member has a first appearance when front lit, and at least one second appearance when at least a portion thereof is back lit by illumination means controlled by the at least one switch member. The at least one switch member is provided on a reverse side of the panel member and is controlled by a user from an obverse side of the panel member.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: August 13, 2013
    Assignee: John McGavigan Limited
    Inventors: Stephen John Mathers, Michael Thaniotis
  • Patent number: 8462022
    Abstract: A control unit comprising a light guide is formed and positioned in a circuit board for providing visual indication to a user of an appliance, such as a cooktop. The light guide receives light from a source, typically in the form of an LED on the circuit board, typically positioned laterally to the light guide, and the light guide receives and directs the light to the user. In some embodiments, the light guide is positioned behind a cover, which may have indicia thereon for providing operating information to the user. Portions of the light guide may be coated with an electrically conductive coating so as to also form a portion of a capacitance touch switch for detecting user input for controlling operation of the appliance.
    Type: Grant
    Filed: November 11, 2008
    Date of Patent: June 11, 2013
    Assignee: E.G.O. Elektro-Geraetebau GmbH
    Inventor: Bernhard Roth
  • Patent number: 8269123
    Abstract: Disclosed herein is an image display device having a plurality of light emitting diodes (LEDs), which can maintain a primary color which is desired to be expressed, and prevent an interference of other unwanted colors and a change of the primary color at the time of application of a light source of each light emitting diode. The image display device comprises: a first optical filter layer containing a violet wavelength-absorbing material having a wavelength range of from 380 nm to 450 nm such as Bi2O3 so as to prevent light having a wavelength ranging from 380 nm to 450 nm from being leaked out to an undesired region of an image display portion of the image display device; and a second optical filter layer such as a blue color filter layer so as to allow a white light to be expressed in a desired region of the image display portion.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: September 18, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeon Jin Shin, Jae Young Choi, Dong Kee Yi, Seong Jae Choi, Seonmi Yoon
  • Patent number: 8223040
    Abstract: A mobile terminal and method for operating a touch keypad, the mobile terminal including a touch keypad, a touch sensor processor for sensing a signal inputted from a key selected by a user on the touch keypad and outputting location information corresponding to the selected key based upon the sensed signal, a Control Processor (CPU) for outputting at least one or more control signals based upon the outputted location information, and a light emitting diode controller for independently driving a light emitting diode corresponding to the selected key based upon the outputted control signals.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: July 17, 2012
    Assignee: LG Electronics Inc.
    Inventors: Dong-Seuck Ko, In-Yong Kim
  • Patent number: 8173921
    Abstract: A switch module includes a substrate (4), a plurality of switches (6) provided on an upper surface of the substrate (4), first and second light-guiding sheets (8, 10) disposed to be stacked above the plurality of switches (6), at least one first light source (12) disposed on the upper surface of the substrate (4) to illuminate the first light-guiding sheet (8), at least one second light source (14) disposed on the upper surface of the substrate (4) to illuminate the second light-guiding sheet (10), and a switching-control device (15) configured to switch between lighting of the first light source (12) and lighting of the second light source (14). First and second displays (22, 24) are respectively provided on a surface of each of the first and second light-guiding sheets (8, 10). When the first light source (12) is lighted, the first display is displayed, and when the second light source (14) is lighted, the second display (24) is displayed.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: May 8, 2012
    Assignees: Citizen Electronics Co., Ltd., Citizen Holdings Co., Ltd.
    Inventor: Masashi Watanabe
  • Patent number: 8111855
    Abstract: A microphone assembly (10) using in a portable electronic device includes a fixing component (12) detachably fixed to a housing (30) of the portable electronic device, and a main microphone body (14) latched to the fixing component (12). The microphone assembly (10) may be conveniently detached and increases reliability of the housing (30).
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: February 7, 2012
    Assignee: Chi Mei Communication Systems, Inc.
    Inventors: Kai-Po Chan, Chao-Yuan Cheng, Chao-Kun Tseng
  • Patent number: 8022846
    Abstract: A keypad is provided for a computing device. The keypad includes one or more lighting devices or mechanisms for illuminating a plurality of keys structures. In an embodiment, the plurality of key structures are formed from a milky material.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: September 20, 2011
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Michael Yurochko
  • Patent number: 7997746
    Abstract: An arrangement and method for displaying at least a first and a second image. The arrangement comprises at least one light source (120, 121, 220, 221, 320, 321) adapted to generate light having at least a first and a second light characteristic; and at least a first and a second image forming element (122, 123, 222, 223, 322, 323) arranged to display a first and a second image (128, 129, 230, 231), respectively. The first image forming element (122, 222, 322) is at least responsive to the light having the first light characteristic. The second image forming element (123, 223, 323) is at least responsive to the light having the second light characteristic.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: August 16, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Gunnar Klinghult, Mats Kleverman, Richard Nilsson, Kent Ådán, Torbjörn Karlelid
  • Publication number: 20110147181
    Abstract: The invention provides a button for an interior of a vehicle, a method of using a graphic on a button to indicate the current status or configuration of the button and/or a device the button controls, and a method of making a button with changing appearances, the button comprising a non-mechanical switch and the button comprising means for backlighting of at least two different colors, the button further comprising at least two band-pass filters (232, 234), the band-pass filters being configured to block one of the two different colors, while allowing the other to pass through, wherein a three dimensional appearance of the button is changed depending on which color is activated to provide backlighting to the button, wherein during a first status or configuration state of the button, one of the colors is activated to provide backlighting to a first portion (212) of the button and wherein during a second status or configuration state of the button, the other color is activated to provide backlighting to a secon
    Type: Application
    Filed: August 26, 2009
    Publication date: June 23, 2011
    Applicant: Johnson Controls Technology Company
    Inventor: Michael R. Catlin
  • Patent number: 7965204
    Abstract: The invention relates to a portable radio remote control transmitter with a splash-proof and dust-tight housing, which accommodates a control unit and comprises an operator control panel with a number of buttons for entering control commands. In order to develop the radio remote control transmitter in such a way that the risk of erroneous operation is reduced, it is proposed according to the invention that at least one button has an associated illuminating element for illuminating the button.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 21, 2011
    Assignee: NBB Controls + Components AG
    Inventors: Wolfgang Bredow, Thomas Burchard
  • Publication number: 20110114460
    Abstract: An input device capable of enhancing symbol readability for an electronic product includes a plurality of keypads for displaying a plurality of first kind symbols and a plurality of second kind symbols; a detection unit for detecting an operation mode of the electronic device; and a control unit coupled to the detection unit and the plurality of keypads for controlling the plurality of keypads to display the plurality of first kind symbols or the plurality of second kind symbols according to a detection result of the detection unit.
    Type: Application
    Filed: January 24, 2011
    Publication date: May 19, 2011
    Inventors: Jen-Hsiang Chiang, Hsin-Chuan Hsu
  • Patent number: 7932839
    Abstract: A mobile terminal and method for operating a touch keypad, the mobile terminal including a touch keypad, a touch sensor for sensing a signal inputted from a key selected by a user on the touch keypad and outputting location information corresponding to the selected key based upon the sensed signal, a Control Processor (CPU) for outputting at least one or more control signals based upon the outputted location information, and a light emitting diode controller for independently driving a light emitting diode corresponding to the selected key based upon the outputted control signals.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: April 26, 2011
    Assignee: LG Electronics Inc.
    Inventors: Dong-Seuck Ko, In-Yong Kim
  • Patent number: 7891828
    Abstract: An electronic device includes a housing and a touch sensor mounted in the housing. The touch sensor further includes a translucent panel provided in a part of the housing, a printed circuit board which senses a touch on the translucent panel by a user, a light source mounted to the printed circuit board, which irradiates light towards the translucent panel, and a diffusion sheet provided between the translucent panel and the light source, which diffuses the light irradiated from the light source. The diffusion sheet further includes a first region formed transparent to directly transmit the light, and a second region frosted to diffuse the light towards an outer peripheral portion of the translucent panel. The second region is provided at a position corresponding to the light source, and the first region is provided to surround the second region.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: February 22, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Toshikatsu Nakamura
  • Patent number: 7851717
    Abstract: A light-guide sheet includes a light transmissive film substrate, and luminescent protrusions formed at predetermined points on the substrate. At least one of the substrate and each of the luminescent protrusions is colored to a color tone that absorbs yellow light more than blue light. Alternatively, a reflective layer colored to a color tone that absorbs yellow light more than blue light is provided on at least one of the top and bottom faces of the substrate.
    Type: Grant
    Filed: January 6, 2009
    Date of Patent: December 14, 2010
    Assignee: Panasonic Corporation
    Inventors: Naoki Tatehata, Yousuke Chikahisa, Tsutomu Aisaka, Koji Tanabe, Hirotoshi Watanabe
  • Patent number: 7826806
    Abstract: A mobile terminal is provided that includes a housing having an opening formed therein, a cover disposed in the opening of the housing, the cover including at least one light transmission opening, an input switch located beneath the opening of the housing and the at least one light transmission opening, a light emitter to illuminate the at least one light transmission opening, and a light constraining member to direct light from the light emitter towards the light transmission opening and to minimize light emitted from the light emitter from being directed peripherally of the light transmission opening.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: November 2, 2010
    Assignee: LG Electronics Inc.
    Inventor: Byung-Sung Choi
  • Publication number: 20100243417
    Abstract: A switch module includes a substrate (4), a plurality of switches (6) provided on an upper surface of the substrate (4), first and second light-guiding sheets (8, 10) disposed to be stacked above the plurality of switches (6), at least one first light source (12) disposed on the upper surface of the substrate (4) to illuminate the first light-guiding sheet (8), at least one second light source (14) disposed on the upper surface of the substrate (4) to illuminate the second light-guiding sheet (10), and a switching-control device (15) configured to switch between lighting of the first light source (12) and lighting of the second light source (14). First and second displays (22, 24) are respectively provided on a surface of each of the first and second light-guiding sheets (8, 10). When the first light source (12) is lighted, the first display is displayed, and when the second light source (14) is lighted, the second display (24) is displayed.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Applicants: CITIZEN ELECTRONICS CO., LTD., CITIZEN HOLDINGS CO., LTD.
    Inventor: Masashi WATANABE
  • Publication number: 20090173608
    Abstract: A light-guide sheet includes a light transmissive film substrate, and luminescent protrusions formed at predetermined points on the substrate. At least one of the substrate and each of the luminescent protrusions is colored to a color tone that absorbs yellow light more than blue light. Alternatively, a reflective layer colored to a color tone that absorbs yellow light more than blue light is provided on at least one of the top and bottom faces of the substrate.
    Type: Application
    Filed: January 6, 2009
    Publication date: July 9, 2009
    Inventors: Naoki TATEHATA, Yousuke Chikahisa, Tsutomu Aisaka, Koji Tanabe, Hirotoshi Watanabe
  • Patent number: 7507352
    Abstract: A luminous material comprising a rubber, glass or plastics material matrix. A luminescent material is dispersed throughout the matrix, and a colorant dispersed throughout the matrix. The colourant gives the matrix a colour when it is observed under substantially white light, and the colourant allowing substantial transmission of light emitted by the luminous material.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: March 24, 2009
    Inventors: Craig Jameson Baillie, Stephen Lambert
  • Publication number: 20080087533
    Abstract: A keypad assembly of electronic equipment includes a plurality of light emitting units, a light guide plate guiding light emitted from the light emitting units, a plurality of key buttons formed on a top surface of the light guide plate and including numeral and character key plates, a plurality of reflection patterns formed on the light guide plate and reflecting light toward the key buttons, a plurality of protrusions formed under the reflection patterns, a switch substrate including a plurality of switches corresponding to the protrusions, a first optical filter layer formed under the numeral key plates and converting the light emitted from the light emitting units into light of various colors according to wavelengths of the light emitted from the light emitting units, and a second optical filter layer formed under the character key plates and blocking violet wavelength light and transmit light having other wavelengths.
    Type: Application
    Filed: July 2, 2007
    Publication date: April 17, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-young CHOI, Joo-hoon LEE, Hyeon-jin SHIN
  • Patent number: 7335844
    Abstract: A keypad assembly for an electronic device is disclosed. The keypad assembly includes a light guide plate through which a light moves, a plurality of first key buttons on the top surface of the light guide plate, a plurality of reflecting patterns on the bottom surface of the light guide plate for reflecting the light moving through the light guide plate toward the first key buttons, protrusions under the reflecting patterns, a plurality of light emitting devices for supplying the light to the light guide plate, and a switch board including a plurality of dome switches and at least one first optical filtering layer whose color is changed into various colors by reacting or not reacting to the wavelengths of lights generated from the light emitting devices is included under each of the first key buttons.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: February 26, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Hoon Lee, Byung-Duck Cho, Dong-Hoon Jang, Sun-Tae Jung
  • Patent number: 7220930
    Abstract: A floor care appliance such as a vacuum cleaner is provided having a display panel having at least one indicator light for indicating a status of a feature of the appliance wherein the indicator light is lighted by electro luminescent lighting. The electro luminescent lighting is also used on a control panel for a floor care appliance to backlight one or more switches used to control a feature or mode of the appliance wherein the backlighting indicates a status of the feature or mode associated with a particular switch. The switches and electro luminescent backlighting are embedded between layers of a thin film allowing the display and control panels to be mounted on a curved surface such as the handle of the floor care appliance.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: May 22, 2007
    Assignee: The Hoover Company
    Inventors: Evan A. Gordon, Aaron P. Tondra
  • Patent number: 7186935
    Abstract: A keypad assembly for a portable terminal is disclosed. The keypad assembly for the portable terminal includes a light guide plate which has reflection patterns locally formed on a lower surface of the light guide plate for reflecting a part of light transmitted in the light guide plate toward an upper surface of the light guide plate. The keypad assembly also includes at least one key button seated on the light guide plate, for outputting the light reflected by the reflection patterns out of the keypad assembly, upper and lower cases for containing the light guide plate, a switch substrate seated on a bottom surface of the lower case and having at least one switch, and an extension member which extends from an upper case of the portable terminal toward the switch substrate. The extension member has a reflection filter for reflecting the light exiting from the light guide plate toward the light guide plate back.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: March 6, 2007
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Hoon Lee, Sun-Tae Jung
  • Patent number: 7090368
    Abstract: A key, which may be used in a user interface, including indicia formed at least in part from UV reactive material.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: August 15, 2006
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Glen A Oross, Dennis R Esterberg, Memphis Zhihong Yin
  • Patent number: 6747402
    Abstract: An EL element includes plural light transmitting front-electrodes forming plural lines by wiring and plural back-electrodes forming plural lines by further wiring. The front-electrodes are angled relative to the back-electrodes and a light-emitting layer is disposed between the front-electrodes and the back-electrodes. The EL element combined with a controller works as a lighting unit, which controls light emission at any place, so that a variety of lighting is realized by the lighting unit.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: June 8, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Minoru Hato, Yoshiharu Abe
  • Patent number: 6608271
    Abstract: In one embodiment a light source is provided to illuminate one or more keys. Each key has at least one glyph. The color of each glyph corresponds to the light source.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: August 19, 2003
    Assignee: Danger, Inc.
    Inventor: Matias G. Duarte
  • Patent number: 6590174
    Abstract: A switch assembly comprises a substrate and a multi-way switch mounted on the substrate. A knob is connected to the multi-way switch and has a perimeter. The knob is used for controlling a position (e.g., a shaft position) or corresponding electrical state of the multi-way switch. At least one light source is associated with the substrate. A light diffuser is located at least partially in an optical path between one or more of the light sources and a region about the perimeter of the knob.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: July 8, 2003
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Adam Zysnarski, Shadi Mere, Todd Bagdonas
  • Patent number: 6576856
    Abstract: A sheet shaped key top wherein molded resin key tops are arranged on a sheet, wherein the resin key top is fixed so as to cover the core upper part passing through the sheet, allowing to vary easily the key top design, and permitting a high manufacturing yielding, and a manufacturing method thereof.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: June 10, 2003
    Assignee: Polymatech Co., Ltd.
    Inventors: Nakajo Masaru, Tomoaki Hioki
  • Publication number: 20030034240
    Abstract: In one embodiment a light source is provided to illuminate one or more keys. Each has at least one glyph. The color of each glyph corresponds to the light source.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 20, 2003
    Inventor: Matias G. Duarte
  • Patent number: 6210010
    Abstract: An illuminated pushbutton has a display assembly which is movable relative to a fixed part containing a switch assembly. The display assembly contains a plurality of solid state light generating devices which can individually or in combination provide illumination with variable coloring characteristics. A flexible circuit element connects these devices to electronic circuitry in the fixed part which controls the coloration of the display.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: April 3, 2001
    Assignee: G. & A. Engineering S.R.L.
    Inventors: Antonio Pontetti, Giorgia Pontetti
  • Patent number: 6036326
    Abstract: A resinous member with a character visually arranged therein, including a resinous body, a character formed by a laser beam machining on a surface of the body, and a light transmittable coating arranged on the surface of the body for covering at least the character. The light transmittable coating is provided with a generally uniform thickness to form a roughened outer surface substantially corresponding to a machined surface of the character. The light transmittable coating may be formed through a spray coating process. The resinous member may be used as a key top member of a key in a keyboard of an electronic machine. The key top member comprises a resinous body, a character arranged on a surface of the body, and optical means arranged in association with the character for highlighting the character in an optical manner using an external light. The optical means may comprise a phosphorescent or fluorescent member.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: March 14, 2000
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Hiroshi Yoshikawa, Tsutomu Takahashi, Tamotsu Koike