EP2188820A1 - Dispositif d'affichage et agencement de touches - Google Patents

Dispositif d'affichage et agencement de touches

Info

Publication number
EP2188820A1
EP2188820A1 EP08801316A EP08801316A EP2188820A1 EP 2188820 A1 EP2188820 A1 EP 2188820A1 EP 08801316 A EP08801316 A EP 08801316A EP 08801316 A EP08801316 A EP 08801316A EP 2188820 A1 EP2188820 A1 EP 2188820A1
Authority
EP
European Patent Office
Prior art keywords
light
display device
layer
display
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08801316A
Other languages
German (de)
English (en)
Inventor
Michael Sailer
Michael Reich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of EP2188820A1 publication Critical patent/EP2188820A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/01—Liquid crystal
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/01—Liquid crystal
    • H01H2219/012—Liquid crystal programmable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/064—Optical isolation of switch sites

Definitions

  • the invention relates to a display device comprising a light source and a light guide.
  • the invention further relates to a key arrangement for an electronic device.
  • Display devices and key arrangements for electronic devices known. Especially with mobile phones, it is customary to assign one or more keys in different operating modes of the mobile phone with different functions. In order to identify their respective current functional assignment, such multifunction buttons are usually arranged below a display and the respective function is displayed on the display.
  • Multifunction button and a display leads to a loss of freely available display area of the display. In addition, it can complicate the operation of an electronic device, since such an arrangement may be confusing.
  • An object of the invention is therefore to provide an improved display device and a button arrangement, which allows a functional and visually appealing display of a current functional assignment of a key.
  • the underlying object is achieved by a display device comprising a light source, a light guide with a radiating surface, wherein the light guide is adapted to direct light from the light source to the radiating surface, and dissolved on the radiating surface arranged transflective element.
  • the transflexive element comprises a first layer having at least a first and at least a second subregion, the first layer being adapted to transmit light of the emission surface in the first subregion and not to transmit in the second subregion, and one in the emission direction of the light over the first subregion Layer arranged second layer, wherein the second layer is adapted to pass through at least a portion of the light of the light source.
  • a space-saving display is realized.
  • Display device is suitable, for example, for installation in a button, so that it is possible to dispense with a display of a functional assignment by a separately arranged display element.
  • the second layer comprises a polarizing film and is adapted to transmit light of a first polarization direction and not to transmit light of a second polarization direction.
  • a polarizing film By using a polarizing film, incident ambient light is largely filtered out by the second layer, so that the display device can be clearly read even when ambient light is incident.
  • the second layer is arranged on a surface of the display device, wherein the display device is configured to display a symbol on the surface when the light source is switched on and to display no symbol on the surface when the light source is switched off. By selectively displaying a symbol on the surface of the display device, such as a key cap or a housing wall, an operating state of an electronic device is displayed clearly.
  • a display device is also suitable for displaying company or brand names, which stand out in this way visually.
  • an additional diffusion film is arranged between the first layer and the second layer.
  • Display device is improved.
  • a uniform illumination of the display device is effected by the light source.
  • the light-guiding element and the first layer are at least two-parted, wherein a first and a second part of the light-guiding element or the first layer can be illuminated separately and when the first part is illuminated a first symbol and upon illumination of the second part a second symbol the display device can be displayed.
  • a first and a second part of the light-guiding element or the first layer can be illuminated separately and when the first part is illuminated a first symbol and upon illumination of the second part a second symbol the display device can be displayed.
  • the underlying object is also achieved by a key arrangement for an electronic device having a first and at least a second operating state, comprising at least one key having a surface and a key associated with the display device according to one of the above embodiments.
  • the display device is set up to display no symbol on the surface in the first operating state and to display a symbol on the surface in the second operating state.
  • FIG. 1A shows a schematic structure of a display device according to an embodiment of the invention
  • FIG. 1B shows a schematic representation of a layer of the display device according to FIG. 1A
  • Figure 2A shows a cross section through an inventive
  • FIG. 2B shows a plan view of the display device according to FIG. 2A
  • FIG. 3A shows a cross section through a display device according to the invention in the switched-on state
  • Figure 3B is a plan view of the display device according to the figure 3A and
  • Figure 4 shows an electronic device with a key arrangement according to an embodiment of the invention.
  • Figure IA shows a cross section through a
  • the display device 1 comprises a light source 2, a light-guiding element 3 and a transflexive element 4.
  • the light source 2 comprises a light-emitting diode (LED) 5.
  • LED light-emitting diode
  • the light-guiding element 3 comprises, for example, a light guide made of polycarbonate (PC), polymethyl methacrylate (PMMA), silicone or a glass fiber mat.
  • the light-guiding element 3 has a radiating surface 6 which supplies at least a part of the light to the light source 2 becomes.
  • a total internal reflection (TIR) of the light-guiding element 3 or a light scattering of the light-guiding element 3 serve to supply the light.
  • the transflexive element 4 comprises a first layer 7 and a second layer 8, which are arranged on the emission surface 6 of the light-conducting element 3.
  • the first layer 7 is a light-absorbing or light-reflecting film with a structuring applied thereto.
  • FIG. 1B shows an embodiment of a first layer 7 with a first subregion 9 and a second subregion 10.
  • the first subregion 9 is set up to transmit light emitted by the emission surface 6.
  • the second subregion 10 is set up to reflect or absorb light of the emission surface 6.
  • an opaque black plastic film can be used, are cut from the symbols, logos or other display elements.
  • the second layer 8 is at least partially transmissive to light of the light source 2.
  • the second layer 8 may comprise a linear or circular polarizer film.
  • the use of a gray or color filter film is possible.
  • an additional diffusion film 11 is arranged between the first layer 7 and the second layer 8.
  • the optional diffusion film 11 scatters incident light from the surface of the second layer 8, thus the structure of the first layer 7 can only be recognized by backlighting by the light source 2. At the same time it ensures a uniform illumination of a surface of the display device 1 by the light source. 2
  • FIG. 2A shows an exemplary display device 1 in an off state.
  • ambient light 12 from an external light source 13 is incident on the display device 1.
  • the transflexive element 4 of the display device 1 absorbs a large part of the incident ambient light 12.
  • the light source 2 of the display device 1 is deactivated , Therefore, in the plan view of Figure 2B, no icon on a surface 14 of the display device 1 can be seen. It appears as a uniformly colored surface. For example, a case surface or keycap may appear completely black.
  • FIG. 3A the same display device 1 is shown as in FIG. 2A.
  • the light source 2 of the display device 1 is turned on.
  • the light emitted from the light source 2 is supplied to the transflexive element 4 through the light guide 3.
  • the transflexive element 4 transmits a
  • FIG. 4 shows a mobile electronic device 16.
  • the electronic device 16 is a mobile telephone.
  • the electronic device 16 may be in a first and in a second operating state.
  • the electronic device 16 is used in a first operating state for telephoning and in a second operating state for playback of media data.
  • the mobile electronic device 16 includes a keypad 17, a multi-function rocker 18, and a display 19.
  • the keypad 17 may be a numeric keypad for entering numbers.
  • the multi-function rocker 18 can be moved in four different directions, left, right, up, and down.
  • the display 19 is, for example, a liquid crystal display (LCD).
  • the multi-function rocker 18 can be used to navigate through a menu structure displayed on the display 19.
  • the multi-function rocker 18 is not used to navigate through a menu structure, but to execute predetermined commands.
  • the four directions may be used for skipping forward, backward, pausing, and pausing a reproduced piece of music.
  • four icons 15A to 15D are displayed on the multi-function rocker 18.
  • the electronic device 16 comprises a plurality of different operating states.
  • a mobile phone may be in addition to that already described
  • Media playback function also have a digital camera function.
  • one or a plurality of the keys of the keypad 17 and / or the multi-function rocker 18 is assigned one or more further functions.
  • a trigger function or an activation of a flash can be assigned to different positions of the multi-function rocker 18.
  • individual areas of the multi-function rocker 18 or the keypad 17 are independently illuminable.
  • a light-conducting element 3 or a first layer 7 arranged underneath can be subdivided into a first part and a second part, which can be illuminated by different light sources 2.
  • no symbols can be displayed on the multi-function rocker 17 at all in the first operating state of the electronic device 16, while in a second or third operating state of the electronic device 16 different symbols 15 are displayed on the multi-function rocker 18.
  • display elements 1 can also be arranged in another area associated with a key, for example below, above or next to a key. Due to the situation-adapted display of symbols 15, the operation of the electronic device 16 is designed much clearer than if the respective function assignments would be displayed exclusively in the display 19. In addition, the display 19 is fully available for displaying further information, such as a currently recorded image available.

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Push-Button Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif d'affichage (1), comprenant une source lumineuse (2), un élément de guidage de lumière (3) pourvu d'une surface de rayonnement (6), l'élément de guidage de lumière (3) étant conçu pour guider la lumière de la source lumineuse (2) jusque sur la surface de rayonnement (6), ainsi qu'un élément transflectif (4). Ce dernier comprend une première couche (7), présentant au moins une première zone (9) et au moins une deuxième zone (10), la première couche étant conçue pour laisser passer la lumière de la surface de rayonnement (6) dans la première zone (9) et ne pas la laisser passer dans la deuxième zone (10), ainsi qu'une deuxième couche (8) située au-dessous de la première couche (7) dans le sens de rayonnement de la lumière, la deuxième couche (8) étant conçue pour laisser passer au moins une partie de la lumière de la source lumineuse (2).
EP08801316A 2007-09-11 2008-09-08 Dispositif d'affichage et agencement de touches Withdrawn EP2188820A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007043190A DE102007043190A1 (de) 2007-09-11 2007-09-11 Anzeigeeinrichtung und Tastenanordnung
PCT/DE2008/001512 WO2009033468A1 (fr) 2007-09-11 2008-09-08 Dispositif d'affichage et agencement de touches

Publications (1)

Publication Number Publication Date
EP2188820A1 true EP2188820A1 (fr) 2010-05-26

Family

ID=40091755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08801316A Withdrawn EP2188820A1 (fr) 2007-09-11 2008-09-08 Dispositif d'affichage et agencement de touches

Country Status (8)

Country Link
US (1) US20100214228A1 (fr)
EP (1) EP2188820A1 (fr)
JP (1) JP2010540978A (fr)
KR (1) KR20100081985A (fr)
CN (1) CN101802951A (fr)
DE (1) DE102007043190A1 (fr)
TW (1) TWI378417B (fr)
WO (1) WO2009033468A1 (fr)

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WO2008153528A1 (fr) * 2007-06-14 2008-12-18 Avery Dennison Corporation Dispositif d'affichage graphique et d'informations éclairé
US8317352B2 (en) 2008-12-11 2012-11-27 Robert Saccomanno Non-invasive injection of light into a transparent substrate, such as a window pane through its face
KR101642884B1 (ko) * 2011-01-05 2016-08-10 레이저 (아시아-퍼시픽) 피티이 엘티디 키보드, 키패드, 또는 다른 사용자 입력 장치로 사용 가능한, 디스플레이를 위한 광학적 투과 키 어셈블리
EP3184880B1 (fr) * 2011-07-26 2018-09-12 LG Innotek Co., Ltd. Module d'éclairage
KR101856657B1 (ko) 2011-07-26 2018-05-14 엘지이노텍 주식회사 조명 모듈
KR101848875B1 (ko) * 2011-11-10 2018-05-28 엘지전자 주식회사 전자 기기
DE102013021330A1 (de) * 2013-12-17 2015-06-18 Valeo Schalter Und Sensoren Gmbh Beleuchtete Anzeigevorrichtung, Verfahren zum Betrieb einer solchen Anzeigevorrichtung, Elektrisches Bedienelement mit einer solchen Anzeigevorrichtung und Verfahren zum Betrieb eines solchen Bedienelementes
US9395822B2 (en) 2014-03-03 2016-07-19 Peter Hinz Keycap including a liquid crystal panel and polarizing glyphs
DE102019129120B3 (de) * 2019-10-29 2021-01-21 Audi Ag Bedienelement für ein Kraftfahrzeug mit einer Anzeigevorrichtung

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Also Published As

Publication number Publication date
WO2009033468A1 (fr) 2009-03-19
CN101802951A (zh) 2010-08-11
US20100214228A1 (en) 2010-08-26
KR20100081985A (ko) 2010-07-15
JP2010540978A (ja) 2010-12-24
TW200919399A (en) 2009-05-01
TWI378417B (en) 2012-12-01
DE102007043190A1 (de) 2009-03-12

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