WO2008072666A1 - Dispositif d'entrée éclairé - Google Patents

Dispositif d'entrée éclairé Download PDF

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Publication number
WO2008072666A1
WO2008072666A1 PCT/JP2007/073961 JP2007073961W WO2008072666A1 WO 2008072666 A1 WO2008072666 A1 WO 2008072666A1 JP 2007073961 W JP2007073961 W JP 2007073961W WO 2008072666 A1 WO2008072666 A1 WO 2008072666A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
metal dome
input device
colored
cover sheet
Prior art date
Application number
PCT/JP2007/073961
Other languages
English (en)
Japanese (ja)
Inventor
Hideyuki Ishida
Hideaki Nagakubo
Masami Aihara
Tsuyoshi Hayama
Akira Sakai
Original Assignee
Alps Electric Co., Ltd.
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 Alps Electric Co., Ltd. filed Critical Alps Electric Co., Ltd.
Priority to JP2008549338A priority Critical patent/JPWO2008072666A1/ja
Publication of WO2008072666A1 publication Critical patent/WO2008072666A1/fr

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
    • H01H2219/036—Light emitting elements
    • H01H2219/044—Edge lighting of layer
    • 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
    • H01H2221/00—Actuators
    • H01H2221/07—Actuators transparent

Definitions

  • the present invention relates to an illumination input device provided in a mobile phone or the like, and more particularly, to a means for causing a required illumination unit to shine in an arbitrary color.
  • One having a top 108 is known (for example, see Patent Document 1).
  • the light emitted from the light emitting diode 103 is guided to the vicinity of the key top 108 by the light guide plate 102 and is emitted in the switch window hole 104. Therefore, the key sheet 107 Further, it is possible to shine the operation surface of the key top 108 by the light S transmitted through the key top 108 with the force S.
  • Patent Document 1 Japanese Patent Laid-Open No. 2005-268165
  • the method of forming a colored portion on the surface of the key top is that the finger is applied to the colored portion each time the key top is operated.
  • the colored portion deteriorates with age and is immediately inferior in durability.
  • a required colored layer, a protective layer, a light shielding layer, and a cover layer colored in the appearance color of the key top are formed in this order on the surface of the key top material.
  • the complicated structure is required. Since the process has to go through the process, there is a problem that the cost of the key top and the device equipped with the key top becomes high.
  • the method of (b) including a light emitting diode that emits light other than white light inevitably increases the number of light emitting diodes set, which increases the number of components and increases the cost of the apparatus. Or the power consumption of the device increases.
  • the color rendering of the illumination part is limited to the color of the light emitted from the light emitting diode, there is a problem that the range of color selection is narrow.
  • the method of (c) including an EL element that emits light other than white light has the same drawbacks as a light emitting diode that emits light other than white light. In comparison with light-emitting diodes, it has the disadvantages of high cost, generation of electromagnetic noise, and low reliability for immediate long-term use.
  • EL elements are used as light emitters for input devices, Since the contact part must be operated, the operation feeling of the key top is deteriorated, and the EL element is repeatedly applied with a pressing force, so that the reliability for long-term use is further reduced.
  • the present invention has been made in order to solve the deficiencies of the conventional techniques, and the purpose of the present invention is to illuminate an illuminating portion with an arbitrary color that is inexpensive, excellent in durability and low in power consumption.
  • An object of the present invention is to provide an illumination input device that can perform the above.
  • the present invention firstly, a wiring board on which a required wiring pattern including a fixed contact of a pushbutton switch is formed, a metal dome which is a movable contact of the pushbutton switch, A cover sheet for fixing the metal dome, a light source, and a light guide plate that has a storage portion for the metal dome, guides incident light from the light source in a plane direction, and emits the light into the storage portion of the metal dome,
  • the cover sheet has a colored portion formed in a required portion, and the light emitted from the light emitting surface of the light guide plate is reflected by the colored portion and emitted in a required direction.
  • the color rendering of the illuminating unit can be changed depending on the color of the colored unit, so that only a white light source such as a white light emitting diode is provided as a light source regardless of the color rendering of the illuminating unit. It's enough. Therefore, the light reduction can be reduced compared to the case of using various light emitting diodes and EL elements with different colors of emitted light, and the cost and power saving of the device can be reduced.
  • the color rendering of the illuminating part can be adjusted by the color of the colored part, the color of the light that illuminates the illuminating part can be arbitrarily selected.
  • the operability of the key top for operating the push button switch can be improved and the aesthetics of the input device can be enhanced. Furthermore, since the colored part is formed on the cover sheet, the colored part is not directly touched with fingers, and discoloration and destruction of the colored part can be prevented. Therefore, the durability of the colored portion and thus the input device can be improved.
  • the present invention is configured such that a plurality of the colored portions having different colors are formed on the cover sheet.
  • the present invention has a configuration in which one colored portion is configured by a set of a plurality of material marks.
  • each material mark can be changed. Since the color rendering color of the light section can be adjusted as appropriate, the power S that facilitates the design of the color rendering of the illumination section is reduced.
  • the present invention is characterized in that one colored portion is composed of a set of a plurality of material marks, and the material mark constituting the one colored portion If the colors of the are different, I made a configuration.
  • the color rendering of the illumination unit can be appropriately adjusted by combining a plurality of material marks having different colors, so that variations in color rendering of the illumination unit can be increased without limit.
  • the coloring portion is a portion corresponding to the metal dome fixing portion of the cover sheet, and the metal dome is fixed. Shin V, when formed on the surface, it was V.
  • the colored portion is formed at a portion corresponding to the metal dome fixing portion of the cover sheet, so that the illumination portion provided on the key top can be illuminated with an arbitrary color.
  • the colored part is formed on the surface of the cover sheet where the metal dome is not fixed, the colored part is not limited by the formation dome of the colored part, and the colored part can be easily formed.
  • the present invention is configured such that the colored portion is not formed at the center of the metal dome fixing portion.
  • the member such as a key top that presses the center of the metal dome does not touch the colored portion, so that the durability of the colored portion and hence the input device can be improved.
  • the present invention is configured such that the metal dome fixing portion is formed in a conical shape, and the coloring portion is formed on a convex surface of the conical portion.
  • the configuration is as follows.
  • the light source power and other light are less likely to leak directly from the end surface of the light guide plate, and more of the light reflected by the colored portion is emitted, compared to when the end surface is vertical. Therefore, it is possible to make the color rendering of the illumination part clear.
  • the illuminated input device of the present invention forms a colored portion at a required portion of the cover sheet, reflects light emitted from the light exit surface of the light guide plate by the colored portion, and radiates it in the required direction. Therefore, it is sufficient to provide only a white light source as the light source, which can reduce the cost and power consumption of the apparatus.
  • the color rendering of the illuminating part can be adjusted by the color of the colored part, the color of the light that illuminates the illuminating part can be arbitrarily selected, and the operability of the key top for operating the push button switch is improved and the input can be performed. The aesthetics of the device can be enhanced.
  • the colored portion is formed on the cover sheet, the durability of the input portion can be improved.
  • FIG. 1 is a cross-sectional view of the main part of the illuminated input device according to the embodiment combined with the key sheet
  • FIG. 2 is a plan view of the main part of the cover sheet illustrating the coloring part according to the embodiment
  • FIG. It is an expanded sectional view.
  • the illuminated input device includes a fixed contact 1a of the push button switch, a wiring board 1 on which a required wiring pattern (not shown) is formed, and a movable contact of the push button switch. It has a metal dome 2, a cover sheet 3 for fixing the metal dome, a light emitting diode 4 that is a light source, and a through-hole 5a that is a storage part of the metal dome 2, and guides incident light from the light emitting diode 4 in the surface direction.
  • the light guide plate 5 that emits light into the through hole 5a and the light shielding film 6 formed on the upper surface of the light guide plate 5 are mainly configured.
  • the illuminated input device of this example is used in combination with a key sheet 7 disposed above the light guide plate 5.
  • the wiring board 1 is formed with a light-shielding white material at least on the side in contact with the light guide plate 5. It is desirable to do. In other words, with this configuration, light absorption by the wiring board 1 is suppressed. Therefore, waste of light emitted from the light emitting diode 4 can be suppressed, and the illuminance of each through hole 5a can be increased.
  • the wiring board 1 can be entirely formed of a light-shielding white material, or a cover made of a light-shielding white material on the surface of the wiring board body formed of a material other than the white light-shielding material. It is also possible to use a layer coated. Examples of light-shielding white materials include reinforced plastics based on liquid crystal polymers and polyimides, and rigid materials such as glass epoxy and low-temperature fired ceramics.
  • the wiring board 1 may have a single-layer structure in which the conductor portion is formed only on the surface, if necessary, or may have a multilayer structure in which the conductor portion is laminated in multiple layers via an insulating layer. I'll do it.
  • the metal dome 2 functions as a movable contact of the push button switch, and is formed by forming a metal plate, for example, a stainless steel plate into a circular shape.
  • a metal plate for example, a stainless steel plate into a circular shape.
  • gold or silver is used as necessary to improve the electrical connection with the fixed contact la and improve wear resistance. You can also add a tag.
  • the cover sheet 3 is formed with a resin film having excellent elasticity such as polyethylene terephthalate.
  • a cover sheet material a white material with a high light reflection effect or a transparent surface with a light diffusion treatment applied to suppress light leakage from the light guide plate 5 and effectively use the light emitted from the light emitting diode 4
  • Particularly preferred are materials, translucent materials or white materials.
  • the metal dome fixing part 3a of the cover sheet 3 is formed in a circular shape, and the metal dome 2 is stored and fixed inside. As a means for fixing the metal dome 2, adhesion is particularly suitable because the work is easy and the metal dome 2 can be securely fixed.
  • the periphery of the cover sheet 3 is bonded to the periphery of the wiring board 1.
  • a colored portion 11 illustrated in FIGS. 2 (a) to 2 (f) is formed on the outer surface of the bowl-shaped metal dome fixing portion 3a formed on the cover sheet 3. In this way, when the colored portion 11 is formed on the outer surface of the metal dome fixing portion 3a, the formation of the colored portion 11 is not restricted by the metal dome 2, so that the colored portion 11 can be easily formed.
  • the colored portion 11 can be formed by printing ink or paint, and a phosphor can be mixed in the ink or paint.
  • the coloring portion 11 is uniformly formed on the entire outer surface of the metal dome fixing portion 3a.
  • FIGS. 2 (b) to (f) it is also possible to construct a collective force of a plurality of material marks such as dots or lines.
  • Fig. 2 (b) shows an example in which a plurality of dot-like mark marks made of a single color are dispersed in the central portion of the metal dome fixing portion 3a and its peripheral portion, and
  • Fig. 2 (c) shows a single color.
  • Fig. 2 (d) shows an example in which a plurality of dotted material marks are dispersed only on the periphery of the metal dome fixing part 3a.
  • FIG. 2 (d) shows a plurality of dotted material marks consisting of multiple colors on the periphery of the methanol dome fixing part 3a.
  • Fig. 2 (e) shows an example in which a plurality of circular material marks consisting of a single color are distributed only around the metal dome fixing part 3a, and Fig. 2 (f) shows a single color.
  • a plurality of circular material marks are formed concentrically with the center position of the metal dome fixing portion 3a as the center.
  • the colored portion 11 is composed of a set of a plurality of material marks such as dots or lines, the size, shape, arrangement, etc. of each material mark can be changed. Since the color rendering color of the required illumination part (in this example, the illumination mark 8a formed on the key top 8) can be adjusted as appropriate, the color rendering design of the illumination part can be facilitated.
  • a light source if a light source includes a plurality of wavelengths, a specific wavelength is absorbed by the coloring portion and the color can be converted. However, from the viewpoint of power consumption and miniaturization, a white light emitting diode that emits white light Is desirable.
  • the number and arrangement of the light emitting diodes 4 are not limited, and the required number of light emitting diodes 4 required to uniformly illuminate the illumination part is provided.
  • the light emitting diode 4 is disposed with its light exit surface facing a required light incident portion set on the light guide plate 5. [0037]
  • the light guide plate 5 guides incident light from the light emitting diode 4 in the in-plane direction and emits it from the through hole 5a.
  • the light guide plate 5 is a highly transparent resin such as acrylic resin, polycarbonate resin, or cyclic polyolefin resin. A material or glass material is used to form a predetermined shape.
  • the through hole 5 a is for accommodating the metal dome 2 and the metal dome fixing portion 3 a of the cover sheet 3, and is formed at a position corresponding to the fixed contact la formed on the wiring board 1.
  • the light guide plate 5 is desired to have a small thickness from the viewpoint of reducing the thickness of the input device. However, if the thickness is too thin, it becomes difficult for light from the light source to be incident from the incident surface, and the manufacturing difficulty level is low. Therefore, the thickness is preferably 0.1 mm or more, more preferably 0.4 mm or less.
  • the plate thickness is 1.2 mm or more, the brightness does not change significantly from that of the plate thickness of 1. Omm to 1.5 mm, so the upper limit of the plate thickness is 1.2 mm from the viewpoint of reducing the thickness of the input device. Is desirable.
  • the gist of the present invention is not limited to this.
  • the light incident from the light emitting diode 4 can be guided to the metal dome fixing portion 3a of the cover sheet 3.
  • the amount of light reflected by the colored portion 11 provided in the metal dome fixing portion 3a can be increased and the amount of light leaking directly from the end face of the light guide 5 to the outside can be reduced.
  • the color rendering can be made clear.
  • the light shielding film 6 prevents light leakage from the light guide plate 5 and effectively uses light, and is formed with a metal film such as black paint or aluminum.
  • the key sheet 7 is formed of a soft translucent resin material, and is an actuating unit 9 for pressing the key top 8 and the metal dome 2 to a portion corresponding to the opening position of the through hole 5a. And are integrally formed.
  • a required illumination mark 8 a is formed at the center of the surface of the key top 8.
  • the illumination mark 8a is formed by, for example, laser processing or the like on the light shielding film 10b formed on the surface of the key top 8 and a part of the cover layer 10a formed on the surface of the light shielding film 10b. It is formed by selectively removing by.
  • As the illumination mark 8a a character or a figure indicating the type of signal input can be formed by pressing the key top 8 on which the illumination mark 8a is formed.
  • the fixed terminal la and the metal dome 2 formed on the wiring board 1 are arranged to face each other.
  • the light guide plate 5 is positioned and set on the cover sheet 3 with the surface on which the light shielding film 6 is not formed facing the cover sheet 3 side.
  • the metal dome 2 and the metal dome fixing part 3 a of the cover sheet 3 are set in the through hole 5 a opened in the light guide plate 5.
  • the light guide plate 5 is fixed to the wiring board 1.
  • fastening or snap coupling can be used.
  • the key sheet 7 is positioned and set above the light guide plate 5.
  • the actuator 9 is set in the through hole 5a opened in the light guide plate 5.
  • the illuminated input device of this example is configured as described above, white light emitted from the light emitting diode 4 passes through the light guide plate 5 in the plane direction as indicated by arrows in FIG. Propagated and emitted into the through hole 5a.
  • White light emitted into the through hole 5a is reflected by the colored layer 11 formed on the metal dome fixing portion 3a of the cover sheet 3 and converted into colored light.
  • the colored light is emitted to the outside through the key top 8 and the illumination mark 8a formed on the key top 8.
  • the illuminated input device of this example forms the colored portion 11 in the metal dome fixing portion 3a of the cover sheet 3, and the light reflected by the colored portion 11 passes through the illuminated mark 8a. Because it radiates to the outside, the illumination mark 8a can be displayed in color.
  • the illuminated input device of this example only needs to include the white light emitting diode 4 as a light source, the cost of the device and power saving can be reduced.
  • the color rendering of the illumination mark 8a can be arbitrarily adjusted according to the color of the coloring portion 11, the operability of the key top 8 for operating the push button switch can be improved and the aesthetics of the input device can be enhanced.
  • the colored portion 11 is formed on the cover sheet 3, the colored portion 11 is difficult to deteriorate over time, and the durability of the input device can be improved.
  • the metal dome fixing part 3a is formed in a circular bowl shape. Since the colored portion 11 is formed on the convex surface, white light emitted from the light guide 5 is irradiated to the colored portion 11 as soon as the metal dome fixing portion is flat. The ability to make the color rendering clear.
  • FIG. 1 is a cross-sectional view of a main part in a state where an illumination input device according to an embodiment is combined with a key sheet.
  • FIG. 2 is a plan view of relevant parts of a cover sheet illustrating a colored portion according to an embodiment.
  • FIG. 3 is an enlarged cross-sectional view of a key top.
  • FIG. 4 is a side view of a main part of an illumination input device according to a conventional example.

Abstract

[PROBLÈMES] Proposer un dispositif d'entrée éclairé qui soit non coûteux, ait une excellente durabilité, consomme moins d'électricité et puisse amener une section d'éclairage à émettre une lumière d'une couleur désirée. [MOYENS POUR RÉSOUDRE LES PROBLÈMES] Le dispositif d'entrée éclairé a un tableau de connexions (1) ayant, formé sur celui-ci, un motif de câblage prédéterminé comprenant un contact fixe (1a) d'un interrupteur à bouton-poussoir, un dôme métallique (2) en tant que contact mobile de l'interrupteur à bouton-poussoir, une feuille de recouvrement (3) pour fixer le dôme métallique, une diode électroluminescente (4) en tant que source de lumière, un trou traversant (5a) pour recevoir le dôme métallique, et une plaque de guidage de lumière (5) pour guider la lumière entrant à partir de la diode électroluminescente (4) vers une direction de surface et libérer la lumière vers l'intérieur du trou traversant (5a). Une section colorée (11) est formée à une section de fixation de dôme métallique (3a) de la feuille de recouvrement (3). Une lumière blanche libérée dans le trou traversant (5a) est réfléchie par la section colorée (11) et rayonnée vers l'extérieur d'un repère d'éclairage (8a) formé sur un dessus de touche (8).
PCT/JP2007/073961 2006-12-12 2007-12-12 Dispositif d'entrée éclairé WO2008072666A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008549338A JPWO2008072666A1 (ja) 2006-12-12 2007-12-12 照光式入力装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006334895 2006-12-12
JP2006-334895 2006-12-12

Publications (1)

Publication Number Publication Date
WO2008072666A1 true WO2008072666A1 (fr) 2008-06-19

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Application Number Title Priority Date Filing Date
PCT/JP2007/073961 WO2008072666A1 (fr) 2006-12-12 2007-12-12 Dispositif d'entrée éclairé

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JP (1) JPWO2008072666A1 (fr)
WO (1) WO2008072666A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010015726A (ja) * 2008-07-01 2010-01-21 Fujikura Ltd メンブレンスイッチ
CN101882520B (zh) * 2009-05-08 2013-03-27 上海向隆电子科技有限公司 提高发光效率的按键装置
US8820949B2 (en) 2008-12-16 2014-09-02 Polymatech Co., Ltd. Key sheet, light blocking effect sheet, push button switch and key sheet manufacturing method
CN112732129A (zh) * 2021-01-12 2021-04-30 业成科技（成都）有限公司 触控结构及电子装置
WO2023079951A1 (fr) * 2021-11-05 2023-05-11 パナソニックホールディングス株式会社 Capteur de proximité et appareil de câblage le comprenant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01235108A (ja) * 1988-03-16 1989-09-20 Fujitsu Ltd メンブレンスイッチの構造
JP2001155576A (ja) * 1999-11-26 2001-06-08 Shin Etsu Polymer Co Ltd 照光式押釦スイッチ用部材
JP2007324100A (ja) * 2006-06-05 2007-12-13 Citizen Electronics Co Ltd シートスイッチモジュール

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01235108A (ja) * 1988-03-16 1989-09-20 Fujitsu Ltd メンブレンスイッチの構造
JP2001155576A (ja) * 1999-11-26 2001-06-08 Shin Etsu Polymer Co Ltd 照光式押釦スイッチ用部材
JP2007324100A (ja) * 2006-06-05 2007-12-13 Citizen Electronics Co Ltd シートスイッチモジュール

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010015726A (ja) * 2008-07-01 2010-01-21 Fujikura Ltd メンブレンスイッチ
US8820949B2 (en) 2008-12-16 2014-09-02 Polymatech Co., Ltd. Key sheet, light blocking effect sheet, push button switch and key sheet manufacturing method
CN101882520B (zh) * 2009-05-08 2013-03-27 上海向隆电子科技有限公司 提高发光效率的按键装置
CN112732129A (zh) * 2021-01-12 2021-04-30 业成科技（成都）有限公司 触控结构及电子装置
JP2022108243A (ja) * 2021-01-12 2022-07-25 業成科技(成都)有限公司 タッチ構造及び電子装置
JP7193577B2 (ja) 2021-01-12 2022-12-20 業成科技(成都)有限公司 タッチ構造及び電子装置
WO2023079951A1 (fr) * 2021-11-05 2023-05-11 パナソニックホールディングス株式会社 Capteur de proximité et appareil de câblage le comprenant

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