EP3428739B1 - Anzeigeeinheit - Google Patents

Anzeigeeinheit Download PDF

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Publication number
EP3428739B1
EP3428739B1 EP17181521.0A EP17181521A EP3428739B1 EP 3428739 B1 EP3428739 B1 EP 3428739B1 EP 17181521 A EP17181521 A EP 17181521A EP 3428739 B1 EP3428739 B1 EP 3428739B1
Authority
EP
European Patent Office
Prior art keywords
assembly according
substrate
display
face
light
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.)
Active
Application number
EP17181521.0A
Other languages
English (en)
French (fr)
Other versions
EP3428739A1 (de
Inventor
Nicolas Blanckaert
Jérôme THIAULT
Cyrille GERNEZ
Pierry Vuille
Ariane GACHET-MUELLER
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.)
Swatch Group Research and Development SA
Original Assignee
Swatch Group Research and Development SA
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 Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP17181521.0A priority Critical patent/EP3428739B1/de
Priority to JP2018130456A priority patent/JP2019020404A/ja
Priority to CN202211476363.3A priority patent/CN115793428A/zh
Priority to CN201810764665.8A priority patent/CN109254520A/zh
Priority to US16/034,904 priority patent/US11249444B2/en
Publication of EP3428739A1 publication Critical patent/EP3428739A1/de
Application granted granted Critical
Publication of EP3428739B1 publication Critical patent/EP3428739B1/de
Priority to JP2021021891A priority patent/JP7289858B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands
    • G04B19/32—Illumination of dials or hands by luminescent substances
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0017—Visual time or date indication means in which the light emitting display elements may be activated at will or are controlled in accordance with the ambient light
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/30—Illumination of dials or hands
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B47/00—Time-pieces combined with other articles which do not interfere with the running or the time-keeping of the time-piece
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
    • G04G9/10—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques by controlling light sources, e.g. electroluminescent diodes

Definitions

  • the present invention relates to a display assembly and more particularly an OLED display assembly intended to illuminate a passive display device, for example in a timepiece such as a watch.
  • more and more devices combine a traditional mechanical display with hands and a digital display, for example for applications connected to a smartphone, or to any other object provided with means of communication, such as in the patent application US2015 / 378319 A1 .
  • the digital display when it is a backlit display, is only lit on demand, so as to reduce the power consumption of the system, while the mechanical display is purely passive. , and therefore not legible in the dark without a Superluminova® type coating.
  • These phosphorescent coatings are not efficient enough for certain applications (date disc for example) because of the small coated surface, but also of the extra thickness generated.
  • the light is emitted towards the front and does not make it possible to illuminate other objects in the same plane or slightly receding relative to the front face of the display.
  • LED light-emitting diode
  • DELo organic active layers
  • OLED organic active layers
  • This low efficiency is mainly due to total reflections of the light emitted by the active layer.
  • LEDs unlike lasers where coherent light is strongly oriented by the resonant cavity, light is emitted isotropically in LEDs. This isotropy has the effect that the light emitted at an angle to the normal to the extraction surface greater than the limit angle undergoes total reflection, which traps this light in its substrate. This trapped light can represent up to 80% of the light emitted for a substrate that has not been optimized.
  • the present invention relates to a display assembly, comprising an organic light emitting diode (LED) display device, comprising at least one LED composed of an emissive stack deposited on a transparent (or semi-transparent or translucent) substrate, the rear face is arranged on the main emitting surface of the LED and a secondary object to be illuminated, said transparent substrate comprising a front face and at least one lateral face, said lateral face being arranged so as to illuminate a secondary object.
  • LED organic light emitting diode
  • the display assembly is particularly suitable for being integrated into a watch, in which the main surface, which may include an integrated or added decoration and which can be produced by various known techniques (pad printing, screen printing, digital printing, decal, etc. ..) forms the face of a watch face that can display information in transmission to the user, a secondary object placed near the side face that can be illuminated by light trapped between the front faces of the substrate when it comes out by the lateral face of the substrate. Typically this recovered light can be advantageously used to illuminate a passive analog display arranged near this side face.
  • the DELo display device forms a watch face, one can provide in the thickness of the latter a through opening forming a window and advantageously combined the DELo display device with a passive analog display device of the display type.
  • the display device can also illuminate a secondary object placed close to the lateral face and substantially in the same plane as the substrate.
  • said side face is frosted so as to produce a diffuse light in use.
  • said side face has an angle between 90 and 135 ° relative to the front face.
  • the transparent substrate has a higher refractive index than the refractive index of the LED layer so as to confine the light in this substrate.
  • Opaque covers are advantageously placed on the lateral faces which do not illuminate the secondary object.
  • the present invention aims to provide a display assembly comprising an organic light-emitting diode (LED) display device A, used to display information on demand on demand, and a secondary object 6 to be illuminated making it possible to use at best the light emitted by one or more organic LEDs of the DELo A display device, trapped between the faces of the substrate of the device and recovered to illuminate the secondary object 6 associated with this DELo device.
  • LED organic light-emitting diode
  • a watch M integrating a mixed display device comprising an active lighting screen A (backlit, LED or LED), which can be decorated on its face oriented towards the user, and a passive display comprising a time dial cooperating with hands 11 and a passive display member 6 visible through a window 7 provided in the dial.
  • active lighting screen A backlit, LED or LED
  • passive display comprising a time dial cooperating with hands 11 and a passive display member 6 visible through a window 7 provided in the dial.
  • the display assembly of the invention uses the light trapped in a transparent layer 2 of the active display by total reflection by extracting this light by a side face 8 substantially perpendicular to the main faces or having an angle ⁇ between 90 ° and 135 ° relative to the front face.
  • the active display device of the invention comprises an emitting layer of the organic light-emitting diode 1 LED 1 type disposed on the rear face of the transparent substrate 2. It can be an active matrix DELo type screen, or of a liquid crystal screen (LCD) in particular of the TFT type associated with a backlight device comprising an LED or an LED in the latter case the light is recovered from the lateral faces of the light guide of the backlight device This screen , in this description is considered the main display.
  • part of the light trapped 5 between the parallel faces of the transparent substrate 2 due to the total reflection is extracted by at least one side face 8 produced in the selected area.
  • This light can then be used to illuminate other so-called secondary elements 6, such as an analog time display or a display member visible through the window 7, for example a date disc 6.
  • the refractive index of the substrate it is possible to modify the ratio between the light emitted by the front end face and the light emitted by the edge or side face of the substrate by modifying the refractive index of the substrate: the higher the substrate has a high refractive index, the more light will be trapped in the transparent layer 2. It may, from this point of view be advantageous to use a substrate 2 of high index, such as sapphire whose refractive index is 1.768.
  • One or more additional layers 3 can be added to the surface of the transparent substrate 2. These layers can for example serve as an anti-scratch, anti-reflective, aesthetic layer.
  • the lateral faces 8 of the substrate 2 preferably have a texture reducing internal reflection, in order to optimize the light extraction.
  • water jet, grinding or ultrasonic cutting techniques have the advantageous effect of frosting the flank 8 of the substrate 2, thereby improving the diffusion and therefore the uniformity of the light output.
  • an object slightly behind the main display as would be a classic date display by a mechanically driven date disc (see figures 2 and 3 ) is preferably lit by side faces oriented towards this secondary display, which has the additional advantage of reducing the direct view towards the user, and therefore of reducing the glare.
  • the lateral faces not illuminating any secondary object can advantageously be covered with an opaque layer 9, preferably reflecting.
  • the organic light-emitting diode (LED) display device of the invention is advantageously integrated into mixed watches, comprising a traditional time display comprising hands 11 and a window 7 under which is driven a date disc 6
  • the hands are backlit by the main display device DELo which forms a dial behind them, while the window 7 is lit by the side faces 8 of the window 7 formed in the substrate 2 of the diode display device.
  • organic electroluminescent (LED) of the invention is advantageously integrated into mixed watches, comprising a traditional time display comprising hands 11 and a window 7 under which is driven a date disc 6
  • the hands are backlit by the main display device DELo which forms a dial behind them, while the window 7 is lit by the side faces 8 of the window 7 formed in the substrate 2 of the diode display device.
  • organic electroluminescent (LED) of the invention is advantageously integrated into mixed watches, comprising a traditional time display comprising hands 11 and a window 7 under which is driven a date disc 6
  • the hands are backlit by the

Claims (11)

  1. Anzeigeeinheit, umfassend:
    - eine Anzeigevorrichtung mit organischen Leuchtdioden (DELo), die mindestens eine DELo (1) mit einem emittierenden Stapel umfasst,
    - ein transparentes, halbtransparentes oder durchscheinendes Substrat (2) mit einer Rückseite, einer Vorderseite und einer Seitenfläche, und
    - ein zu beleuchtendes sekundäres Objekt,
    dadurch gekennzeichnet, dass die organische Leuchtdiode DELo auf der Rückseite des Substrats befestigt ist und Licht aussendet, das einerseits von der Vorderseite des Substrats austritt, um eine Anzeige- und/oder Beleuchtungsfunktion sicherzustellen, und das andererseits von der Seitenfläche des Substrats austritt, um das sekundäre Objekt zu beleuchten.
  2. Einheit nach dem vorhergehenden Anspruch, umfassend eine analoge Zeitanzeige.
  3. Einheit nach Anspruch 2, wobei das sekundäre Objekt (6) das analoge Zifferblatt enthält.
  4. Einheit nach einem der vorhergehenden Ansprüche, wobei das sekundäre Objekt in einem Fenster einer tragbaren Uhr angeordnet ist.
  5. Einheit nach einem der vorhergehenden Ansprüche, wobei die Seitenfläche (8) mattiert ist, so dass bei ihrer Nutzung diffuses Licht erzeugt wird.
  6. Positive Einheit nach einem der vorhergehenden Ansprüche, wobei die Seitenfläche (8) einen Winkel im Bereich von 90 bis 135° in Bezug auf die Vorderseite aufweist.
  7. Einheit nach einem der vorhergehenden Ansprüche, wobei das transparente Substrat (2) einen Brechungsindex von mindestens 1,5 und vorzugsweise einen Wert im Bereich von 1,6 bis 1,8 aufweist.
  8. Einheit nach einem der vorhergehenden Ansprüche, wobei auf den Seitenflächen, die das sekundäre Objekt (6) nicht beleuchten, opake Abdeckungen (9) angeordnet sind.
  9. Einheit nach einem der vorhergehenden Ansprüche, wobei die Vorderseite des Substrats ein damit einteilig ausgebildetes oder ein angefügtes Dekor aufweist.
  10. Einheit nach einem der Ansprüche 1 bis 8, wobei auf dem Substrat ein halbtransparentes Zifferblatt montiert ist.
  11. Tragbare Uhr, umfassend eine Anzeigeeinheit nach einem der vorhergehenden Ansprüche.
EP17181521.0A 2017-07-14 2017-07-14 Anzeigeeinheit Active EP3428739B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP17181521.0A EP3428739B1 (de) 2017-07-14 2017-07-14 Anzeigeeinheit
JP2018130456A JP2019020404A (ja) 2017-07-14 2018-07-10 表示装置組立体
CN202211476363.3A CN115793428A (zh) 2017-07-14 2018-07-12 显示器组件
CN201810764665.8A CN109254520A (zh) 2017-07-14 2018-07-12 显示器组件
US16/034,904 US11249444B2 (en) 2017-07-14 2018-07-13 Display assembly
JP2021021891A JP7289858B2 (ja) 2017-07-14 2021-02-15 表示装置組立体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17181521.0A EP3428739B1 (de) 2017-07-14 2017-07-14 Anzeigeeinheit

Publications (2)

Publication Number Publication Date
EP3428739A1 EP3428739A1 (de) 2019-01-16
EP3428739B1 true EP3428739B1 (de) 2020-06-24

Family

ID=59350806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17181521.0A Active EP3428739B1 (de) 2017-07-14 2017-07-14 Anzeigeeinheit

Country Status (4)

Country Link
US (1) US11249444B2 (de)
EP (1) EP3428739B1 (de)
JP (2) JP2019020404A (de)
CN (2) CN109254520A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3779612A1 (de) * 2019-08-16 2021-02-17 The Swatch Group Research and Development Ltd Verfahren und system zur verbreitung einer nachricht an einen träger einer armbanduhr
EP3789830B1 (de) * 2019-09-09 2024-04-03 The Swatch Group Research and Development Ltd Zifferblatt und herstellungsverfahren eines zifferblatts für eine armbanduhr
EP4102309A1 (de) * 2021-06-08 2022-12-14 The Swatch Group Research and Development Ltd Uhr, die ein verkleidungselement umfasst, das mit einem teil aus zirkonoxid ausgestattet ist

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
JPH0949887A (ja) * 1995-08-04 1997-02-18 Casio Comput Co Ltd 照明装置
CH691333A5 (fr) * 1997-02-19 2001-06-29 Asulab Sa Dispositif d'illumination uniforme du cadran d'un appareil d'affichage.
JP4599637B2 (ja) * 1999-09-30 2010-12-15 カシオ計算機株式会社 時計用文字板および時計
JP2001296374A (ja) * 2000-04-13 2001-10-26 Casio Comput Co Ltd 時計用文字板、その製造方法、および時計
JP2004198681A (ja) * 2002-12-18 2004-07-15 Casio Comput Co Ltd 照明装置および電子機器
EP1666992A1 (de) * 2004-12-02 2006-06-07 Asulab S.A. Uhr mit einer leuchtenden Dekoration
EP1780615A1 (de) 2005-10-28 2007-05-02 Montres Rado S.A. Anzeigeanordnung mit dekorativen Effekten für ein tragbares Gerät, wie eine Uhr
WO2010146162A1 (fr) * 2009-06-18 2010-12-23 Eta Sa Manufacture Horlogere Suisse Piece d'horlogerie a effets esthetiques speciaux
CH702419A2 (fr) * 2009-12-22 2011-06-30 Swatch Group Res & Dev Ltd Piece d'horlogerie comprenant un cadran a ombre chinoise.
ES2564141T3 (es) 2013-06-14 2016-03-18 Saint-Gobain Glass France Substrato de OLED difusor transparente y método para producir tal substrato
JP6565139B2 (ja) * 2014-06-27 2019-08-28 カシオ計算機株式会社 電子時計
KR102386706B1 (ko) * 2015-06-11 2022-04-14 삼성디스플레이 주식회사 표시 장치 및 이를 구비한 시계

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Also Published As

Publication number Publication date
JP7289858B2 (ja) 2023-06-12
CN109254520A (zh) 2019-01-22
US11249444B2 (en) 2022-02-15
CN115793428A (zh) 2023-03-14
US20190018372A1 (en) 2019-01-17
JP2021073475A (ja) 2021-05-13
JP2019020404A (ja) 2019-02-07
EP3428739A1 (de) 2019-01-16

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