WO2010018784A1 - Illuminated key sheet - Google Patents

Illuminated key sheet Download PDF

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Publication number
WO2010018784A1
WO2010018784A1 PCT/JP2009/063985 JP2009063985W WO2010018784A1 WO 2010018784 A1 WO2010018784 A1 WO 2010018784A1 JP 2009063985 W JP2009063985 W JP 2009063985W WO 2010018784 A1 WO2010018784 A1 WO 2010018784A1
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WO
WIPO (PCT)
Prior art keywords
light guide
light
key sheet
sheet
illuminated
Prior art date
Application number
PCT/JP2009/063985
Other languages
French (fr)
Japanese (ja)
Inventor
英昭 池田
Original Assignee
サンアロー株式会社
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 サンアロー株式会社 filed Critical サンアロー株式会社
Publication of WO2010018784A1 publication Critical patent/WO2010018784A1/en

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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
    • H01H2219/056—Diffuser; Uneven surface
    • 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 illuminated key sheet used for electronic devices such as mobile phones (including so-called PHS), PDAs (personal digital assistance), mobile audio, remote controllers for home appliances, and keyboards.
  • electronic devices such as mobile phones (including so-called PHS), PDAs (personal digital assistance), mobile audio, remote controllers for home appliances, and keyboards.
  • the illuminated key sheet includes a display unit for displaying display elements and a translucent key.
  • the display element is illuminated with light from the internal light source of the electronic device, so that the display element can be recognized even in a dark place. It is a key sheet.
  • Patent Document 1 discloses that “a light guide film made of a transparent material that guides light from a light source and a light guide film that is formed on the back surface of the light guide film and that emits light from the light source.
  • a key base comprising: a reflecting means for reflecting the key top formed on the key top; and a pusher provided on the back surface of the reflecting means so as to correspond to the key top ”(Claim 1 of Patent Document 1) Reference).
  • Patent Document 1 states that “the key tops 6, 6,... Are formed with, for example, a top surface decoration type or a back surface decoration type display” (the specification of Patent Document 1 [
  • a display unit for displaying display elements is provided on the key top. That is, in the conventional illumination type key sheet, the light guide part (light guide film) is arranged on the lower side of the display part, and the display element is illuminated from the lower side (see FIG. 4 of Patent Document 1). For this reason, in the conventional illumination type key sheet, it was necessary to express the display element with a transparent character or the like having translucency. For this reason, there is a limit to the selection of the display unit that displays the display element.
  • the present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide an illuminated key sheet that can freely select a display unit.
  • Illuminated key sheet In illuminated key sheet, A display unit for displaying display elements; A light guide unit that is located above the display unit, guides light received by the light receiving unit, and illuminates the display element from above with the guided light; and Is provided.
  • the light guide part is transparent and has a light guide shape.
  • the thickness of the light guide portion decreases as the distance from the light receiving portion increases.
  • the display unit is non-translucent and non-self-luminous.
  • the illuminated key sheet is A pusher is further provided at a position below the display unit.
  • the illuminated key sheet is Further comprising a translucent key member located above the light guide,
  • the translucent key member includes a sheet-like member provided with a fixing layer on the entire surface, and a key fixed to the surface of the sheet-like member by the fixing layer.
  • the display unit is electronic paper.
  • Display element refers to an element of a design displayed by a display unit included in an illuminated key sheet.
  • Display element refers to, for example, a number, character, symbol, figure, or the like that represents the function of a key, but may be a partition line that indicates a key section or graphic art that is not related to the function of a key.
  • Examples of the display unit include a decorative layer provided on a predetermined member and a display member such as electronic paper or a reflective LCD (liquid crystal display device). The decorative layer can be provided by an appropriate method such as printing or painting.
  • Translucency refers to the property of transmitting light.
  • An example of a component having “translucency” is a component having at least a portion having a transmittance of 30% or more.
  • a more specific example of the component having “translucency” is a component having a transparent component or a portion where a substance such as a through hole is not present.
  • “Transparent” includes colorless and transparent as well as colored and transparent.
  • “Non-translucent” means a property that does not transmit light completely, but also includes a property that transmits a small amount of this light.
  • An example of a component having “non-translucency” is a component in which the light transmittance of at least a part of the component is less than 30% and the remaining part is a part that does not transmit light completely.
  • All components are components that do not transmit light completely.
  • “Up” used for “upper” and “upper” refers to the direction of the top surface of the key of the illumination type key sheet.
  • “Surface” means the top surface of the key of the illuminated key sheet.
  • “Lower” used for “lower”, “lower”, “lower” and the like is a direction opposite to the above “upper”, for example, the direction on the substrate side on which the illumination type key sheet is arranged.
  • the “back surface” refers to a surface opposite to the “front surface”, and refers to a substrate side surface on which the illumination type key sheet is arranged.
  • the “side surface” is a surface excluding the “front surface” and the “back surface”.
  • “Light” mainly refers to visible light.
  • the light guide part is located above the display part, so that the display part can be illuminated from the upper side, not from the lower side. For this reason, the limit of selection of a display part is lost, and selection of a display part can be made freely.
  • FIG. 1 It is a perspective view of the mobile telephone incorporating one Embodiment of an illumination type key sheet. It is a disassembled perspective view of one Embodiment of an illumination type key sheet.
  • yen in a figure shows a mode that the light guide part was expanded. It is the perspective view which looked at the presser sheet
  • yen in a figure shows a mode that the light guide part was expanded. It is a schematic explanatory drawing explaining a mode that a light guide part guides the light from a light source.
  • FIG. 1 is a perspective view of an embodiment of a mobile phone incorporating an illuminated key sheet according to the present invention.
  • the illuminated key sheet 1 of the present embodiment (simply referred to as the key sheet 1 in the description of the present embodiment) is incorporated in the mobile phone 100.
  • the key sheet 1 includes a display unit 5 and a light guide unit 3 positioned thereon (see FIG. 2 and the like).
  • the display unit 5 displays a display element 5a and a display element 5b.
  • the display element 5a is a number or a symbol representing the function of the key.
  • the display element 5b is a partition line indicating a key section.
  • An operator of the cellular phone 100 when illuminated and when not illuminated, displays the display element 5a, the display element 5b, and the display element 5b.
  • the display elements 5a and 5b are illuminated by light outside the mobile phone 100 (for example, natural light).
  • the operator visually recognizes the illuminated display elements 5a and 5b.
  • light from a light source hereinafter simply referred to as the light source 101 (see FIG. 5)
  • the light guide unit 3 the display elements 5a and 5b are guided by the guided light. Illuminated.
  • the operator visually recognizes the illuminated display elements 5a and 5b.
  • FIG. 2 is an exploded perspective view of the illuminated key sheet of the present embodiment.
  • yen in a figure shows a mode that the light guide part was expanded.
  • FIG. 3 is a perspective view of the presser sheet provided in the illuminated key sheet according to the present embodiment as seen from the back side.
  • FIG. 4 is a schematic cross-sectional view of the illuminated key sheet according to the present embodiment.
  • yen in a figure shows a mode that the light guide part was expanded.
  • the key sheet 1 includes a display unit 5, a light guide unit 3 positioned above the display unit 5, and a pusher sheet 7 positioned below the display unit 5. Since the pusher sheet 7 has the pusher 7aa, the key sheet 1 has the pusher 7aa located below the display unit 5.
  • the light guide unit 3 includes a light receiving unit 3a (see FIG. 5, the same applies hereinafter).
  • the light guide unit 3 guides light (light from the light source 101) received by the light receiving unit 3a, and illuminates the display elements 5a and 5b (see FIG. 1, the same applies hereinafter) from above with the guided light (illumination). To do). Thereby, the light reflected by the display unit 5 that displays the display elements 5a and 5b is emitted to the outside through the light guide unit 3, and the display element 5a and 5b of the display unit 5 is transmitted to the operator of the mobile phone 100. Make it visible. Since the light guide part 3 is located above the display part 5, the light guide part 3 can illuminate the display elements 5a and 5b from the upper side.
  • the light receiving unit 3 a is a surface closest to the light source 101 among the side surfaces of the light guide unit 3 when the key sheet 1 is incorporated in the mobile phone 100. There may be a plurality of light receiving units 3a and light sources 101.
  • the light guide 3 is formed in a sheet shape. Further, the thickness of the light guide unit 3 decreases as the distance from the light receiving unit 3a increases. In the present embodiment, the thickness of the light guide 3 is linearly thin. As another example, the thickness of the light guide 3 may be reduced nonlinearly or discontinuously.
  • the light guide 3 is transparent and has a light guide shape 3b. Since the light guide unit 3 is located on the display unit 5, it needs to be transparent. This is because the key operator visually recognizes the display elements 5 a and 5 b through the light guide unit 3 when not illuminated and illuminated.
  • the light guide shape 3b is a shape in which the light received by the light receiving unit 3a is reflected to guide the light into the light guide unit 3, and the display unit 5 (display elements 5a and 5b) is illuminated with the light guided. is there.
  • the light guide shape 3b can be provided at an appropriate position. In the present embodiment, the light guide shape 3 b is provided on the entire surface of the light guide unit 3. However, the light guide shape 3b can be provided on at least a part of the front surface of the light guide unit 3, at least a part of the back surface, or both. It is desirable that the light guide shape 3b is constituted by a set of fine shapes so that the operator can visually recognize the display elements 5a and 5b through the light guide unit 3.
  • the light guide shape 3b of the present embodiment is a set of fine irregularities including a reflection surface 3ba that mainly reflects light and a transmission surface 3bb that mainly transmits light. This unevenness is provided in a straight line. The linear unevenness is provided so as to be parallel to the light receiving portion 3a. The thickness of the light guide unit 3 decreases as the distance from the light receiving unit 3a increases. The light guide by the light guide 3 will be described later.
  • the light guide 3 is formed of an appropriate material such as synthetic resin or glass.
  • An example of the synthetic resin is a general thermoplastic resin or thermosetting resin.
  • general thermoplastic resins or thermosetting resins are PET (polyethylene terephthalate) resin, PC (polycarbonate) resin, polyurethane resin, acrylic resin, or silicone resin.
  • the synthetic resin may be an electromagnetic wave curable resin or an electron beam curable resin such as acrylic, epoxy, vinyl, or silicone.
  • the electromagnetic wave curable resin is a resin that cures when irradiated with electromagnetic waves, and includes an ultraviolet curable resin (UV curable resin) or a photo curable resin such as a visible light curable resin, and an electron beam curable resin. Is a resin that cures when irradiated with an electron beam (cathode beam).
  • the light guide unit 3 can be formed by any appropriate method depending on the material.
  • the light guide 3 is formed by injection molding.
  • the injection mold is provided with a shape for forming the light guide shape 3b by fine processing or the like.
  • Display unit 5 displays display elements 5a and 5b.
  • the display unit 5 is electronic paper.
  • the electronic paper is connected to a predetermined drive unit provided in the mobile phone 100. And this electronic paper is driven by the said drive part, and displays the display elements 5a and 5b.
  • the display unit 5 may be a decorative layer provided on the back surface of the light guide unit 3 or the surface of the presser sheet.
  • the decoration layer includes a display element, and this decoration layer displays the display elements 5a and 5b.
  • the display unit 5 is non-translucent and non-self-luminous.
  • the reason why the display unit 5 can adopt such a property is that the light guide unit 3 is positioned above the display unit 5 and the display unit 3 can be illuminated from the upper side, not from the lower side. is there. In this way, the light guide 3 is positioned above the display 5 and the display (display elements 5a and 5b) is illuminated from above by the light guided by the light guide 3. There is no limit, and the display unit 3 can be freely selected.
  • Examples of the display unit 5 that has non-light-transmitting properties and non-self-light emission include the electronic paper, the reflective LCD, and the decoration that has non-light-transmitting properties and non-self-light emission. There are layers.
  • the pusher sheet 7 is formed by integrally providing a pusher layer 7a on a sheet-like member 7b.
  • the pusher layer 7a includes a pusher 7aa and a thin portion 7ab positioned around the pusher 7aa.
  • the pusher sheet 7 is formed by an appropriate method.
  • An example of a method for forming the pusher sheet 7 is insert molding in which the sheet-like member 7b is inserted into a mold and the pusher layer 7a is integrally provided on the sheet-like member 7b.
  • An example of a method for forming the presser sheet 7 is gravure printing in which the presser layer 7a is printed on the sheet-like member 7b.
  • the sheet-like member 7b and the pusher layer 7a are formed of an appropriate material such as a synthetic resin.
  • An example of the synthetic resin is a general thermoplastic resin or thermosetting resin.
  • general thermoplastic resins or thermosetting resins are PET (polyethylene terephthalate) resin, PC (polycarbonate) resin, polyurethane resin, acrylic resin, or silicone resin.
  • the synthetic resin may be an electromagnetic wave curable resin or an electron beam curable resin such as acrylic, epoxy, vinyl, or silicone.
  • the sheet-like member 7b is preferably a polyurethane sheet or the like.
  • the presser layer 7a is preferably formed of an electromagnetic wave curable resin or silicone rubber.
  • the pusher sheet 7 is below the display unit 5, at least one of the constituent elements of the pusher sheet 7 may be non-translucent. This is because the display elements 5a and 5b are illuminated from above at the time of illumination, so that the visibility of the display elements 5a and 5b can be ensured.
  • the light guide 3 is above the display 5 and the display elements 5a and 5b are illuminated from above by the light guided by the light guide 3, so that the pusher sheet 7, especially the pusher 7aa, is illuminated.
  • the range of design is expanded. Further, if there is no shadow due to illumination as described below, the display elements 5a and 5b can be clearly seen by the operator.
  • the display elements 5a and 5b are illuminated from above when illuminated, when the display unit 5 is non-translucent, the display elements are displayed by the shadow of the pusher sheet 7 (particularly the pusher 7aa) under the display unit 5. Problems such as the visibility of 5a and 5b and / or the appearance of the key sheet 1 are eliminated. For this reason, the display elements 5a and 5b can be visually recognized by the operator. This is most particularly true when no other components are interposed between the light guide 3 and the display 5. Thereby, the width of the design of the pusher sheet 7, in particular, the pusher 7aa is expanded.
  • the key sheet 1 only needs to have a pusher 7aa at a position below the display unit 5. For this reason, there are other methods for using the pusher as a constituent element of the key sheet 1.
  • the pusher or the pusher layer including the pusher may be directly integrally formed on the back surface of the display unit 3 with an electromagnetic wave curable resin or the like.
  • the positional relationship between the constituent elements of the key sheet 1 is important.
  • the positional relationship is a positional relationship when the key sheet 1 is incorporated in the mobile phone 100.
  • at least a part of the adjacent components may be fixed and fixed, or at least a part of the adjacent components may be in contact with each other.
  • a component may intervene.
  • the component and / or the fixing layer used for fixing is the visibility of the display elements 5a and 5b. It is necessary to have translucency so as not to hinder.
  • a key member can be appropriately provided on the light guide unit 3 (see, for example, FIGS. 6 to 8), so that the key sheet 1 can be designed freely. Design liberalization can be realized.
  • the display unit 5 is a display member such as electronic paper or a reflective LCD
  • the design of the display elements 5a and 5b can be freely changed.
  • the light guide part 3 and the display part 5 are produced in advance, and the entire key sheet 1 can be designed such that the key member is provided or not provided later.
  • the display elements 5a and 5b can be designed after the design of the entire key sheet 1 is determined. Thereby, the stock management of the key sheet 1 can be facilitated and the provision of the key sheet 1 can be speeded up.
  • an area (also an area partitioned by the display element 5b) corresponding to at least one display element 5a in the light guide 3 is a key. That is, the light guide 3 also plays the role of each key.
  • the light guide part 3 can be provided by providing the light guide shape 3a on the member constituting the key. In this way, a role other than the light guide may be added to the light guide unit 3.
  • the pusher 7aa comes into contact with a metal dome provided on the substrate of the mobile phone 100.
  • a predetermined position that is, a predetermined key and corresponds to the pusher 7aa
  • each component the light guide unit 3, the display unit 5, and the pusher sheet
  • 7) is deformed.
  • the region corresponding to the predetermined position of each component is deformed so as to move downward.
  • the pusher 7aa corresponding to the predetermined key moves downward, and the pusher 7aa moved downward press-deforms the metal dome.
  • the metal dome short-circuits the contact point immediately below the metal dome and generates a click feeling.
  • FIG. 5 is a schematic explanatory diagram for explaining how the light guide unit guides light from the light source.
  • the light source 101 a rod-shaped one or the like can be adopted, and thereby the entire light receiving unit 3a can be illuminated uniformly.
  • an example of the light source 101 includes an LED (light emitting diode).
  • the arrows in FIG. 5 indicate the light path.
  • the light from the light source 101 (light emitted from the light source 101) is received by the light receiving unit 3a.
  • the received light travels through the light guide 3.
  • the light travels through the light guide 3 while reflecting the reflection surface 3ba and / or the upper side surface 3c of the lower surface of the light guide (or the surface of the display unit 5) (light is guided).
  • this light is reflected by the display unit 3 (particularly a display element or the like), passes through the transmission surface 3bb, and is emitted to the outside from the light guide unit 3 and enters the eyes of the operator.
  • the light guide 3 guides the light received by the light receiver 3a (light from the light source 101) and illuminates the display elements 5a and 5b from above with the guided light, so that the operator can illuminate.
  • the display elements 5a and 5b can be visually recognized.
  • the light guide 3 is reduced in thickness as it gets away from the light receiving part 3a, and the light guide 3 is provided with the light guide shape 3b.
  • a set of display elements) can be illuminated uniformly. This is particularly true by providing the unevenness on the entire surface of the light guide 3 so as to be parallel to the light receiving portion 3a. This is because, for example, as the thickness of the light guide portion 3 decreases as the distance from the light receiving portion decreases, the light traveling in the light guide portion 3 is likely to hit the reflecting surface 3b, and the light is easily reflected. This is because the light is easily reflected by the display unit 3 and transmitted through the transmission surface 3bb.
  • FIG. 6 to 8 show an embodiment of an illuminated key sheet in which a key member is appropriately provided on the light guide.
  • FIG. 6 is an exploded perspective view of the illuminated key sheet of the present embodiment, and a portion surrounded by a circle in the drawing shows a state in which the light guide portion is enlarged.
  • FIG. 7 is a schematic cross-sectional view of the illumination type key sheet of the present embodiment, and a portion surrounded by a circle in the drawing shows an enlarged view of the light guide.
  • FIG. 8 is a perspective view of a mobile phone incorporating the illuminated key sheet of the present embodiment.
  • the illuminated key sheet 11 of the present embodiment (simply referred to as the key sheet 11 in the description of the present embodiment) is the same as the illuminated key sheet 1 and a key member located above the illuminated key sheet 1. 19.
  • the light guide unit 13 corresponds to the light guide unit 3
  • the display unit 15 corresponds to the display unit 5
  • the pusher sheet 17 corresponds to the pusher sheet 7.
  • omitted a different part from said embodiment is demonstrated and the overlapping description is abbreviate
  • the key member 19 is located above the light guide unit 13 and has translucency.
  • the key member 19 includes a sheet-like member 19b provided with a fixing layer 19c (see FIG. 7, omitted in FIG. 6) on the entire surface, and a key 19a fixed to the surface of the sheet-like member 19b by the fixing layer 19c. Prepare.
  • the key member 19 Since the display elements 15a (corresponding to the display element 5a) and 15c displayed by the display unit 15 are visually recognized through the light guide unit 13 and the key member 19, the key member 19 also needs to have translucency. is there. For this reason, the key 19a, the sheet-like member 19b, and the fixing layer 19c constituting the key member 19 are required to have translucency, and are particularly preferably transparent.
  • the key 19a is preferably hard from the viewpoint of operation feeling. Further, it is desirable that the sheet-like member 19b has flexibility so as not to hinder the downward movement of the key 19a.
  • the key 19a and the sheet-like member 19b are formed of an appropriate material such as a synthetic resin.
  • An example of the synthetic resin is a general thermoplastic resin or thermosetting resin. Examples of general thermoplastic resins or thermosetting resins are PET (polyethylene terephthalate) resin, PC (polycarbonate) resin, polyurethane resin, acrylic resin, or silicone resin.
  • the synthetic resin may be an electromagnetic wave curable resin or an electron beam curable resin such as acrylic, epoxy, vinyl, or silicone.
  • the sheet-like member 19b is preferably a polyurethane sheet or the like.
  • the key 19a is preferably formed by a PC or the like.
  • the fixing layer 19c is realized by a hot melt adhesive layer, for example.
  • the fixing layer 19c is provided on the entire surface of the sheet-like member 19b, the key 19a is adhered to the entire surface of the sheet-like member 19b.
  • there is no portion where the adhesive is not present and it is possible to prevent the occurrence of shadows caused by the presence of the portion where the adhesive is present and the portion where the adhesive is not present, and to illuminate cleanly.
  • the light reflected by the display unit 15 (display element 15a or 15c) of the light guide unit 13 and transmitted through the transmissive surface 13bb (corresponding to the transmissive surface 3bb) is transmitted through the key member 19 to the eyes of the operator.
  • the operator visually recognizes the display element 15a or 15c.
  • the display unit 15 displays the display element 15c in addition to the display element 15a.
  • the display element 15c is a graphic art unrelated to the key function. Since the light guide unit 3 is positioned above the display unit 15, the mobile phone 110 having such a novel design can be provided.
  • At least a part of the light guide unit 13 and the key member 19 may be fixed and fixed, or at least a part of the light guide unit 13 and the key member 19 may be in contact with each other, and a space or other component is interposed between them. May be.
  • this component and / or the fixing layer used for fixing are visible to the display elements 15a and 15c. It is necessary to be translucent so as not to disturb the sex.
  • the key 19a and the one or more pushers 17aa are positioned corresponding to each other.
  • each component key member 19, light guide unit 13, display unit 15, and pusher sheet 17
  • the region corresponding to the predetermined key 19a of each component is deformed so as to move downward.
  • the pusher 17aa corresponding to the predetermined key 19a moves downward, and the pusher 17aa moved downward press-deforms the metal dome that contacts the pusher 17aa.

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Abstract

An illuminated key sheet, wherein a display section can be selected as desired.  An illuminated key sheet is provided with a display section for displaying display elements, and also with a light guide section located above the display section, guiding light received by a light receiving section, and illuminating from above the display elements by the guided light.

Description

照光式キーシートIlluminated key sheet
　本発明は、携帯電話機（所謂ＰＨＳも含む）、ＰＤＡ（ｐｅｒｓｏｎａｌ　ｄｉｇｉｔａｌ　ａｓｓｉｓｔａｎｃｅ）、携帯オーディオ、家電製品用リモートコントローラ、又はキーボード等の電子機器に使用する照光式キーシートに関する。 The present invention relates to an illuminated key sheet used for electronic devices such as mobile phones (including so-called PHS), PDAs (personal digital assistance), mobile audio, remote controllers for home appliances, and keyboards.
　照光式キーシートは、表示要素を表示する表示部と、透光性を有するキーと、を備える。そして、照光式キーシートは電子機器に組み込まれた場合にこの電子機器の内部光源からの光で表示要素が照らされることにより、キーの操作者が暗所であっても前記表示要素を認識できるキーシートである。 The illuminated key sheet includes a display unit for displaying display elements and a translucent key. When the illuminated key sheet is incorporated in an electronic device, the display element is illuminated with light from the internal light source of the electronic device, so that the display element can be recognized even in a dark place. It is a key sheet.
　従来の照光式キーシートの一例として、キートップを配置するキーベースを導光部にしたものがある。例えば、特許文献１には、「透明性材料からなり光源からの光を導光する導光フィルムと、上記導光フィルムの裏面に形成され上記光源からの光を上記導光フィルムの天面側に形成されたキートップヘ反射する反射手段と、上記反射手段の裏面に上記キートップと対応して設けられた押し子と、からなることを特徴とするキーベース」（特許文献１の請求項１参照）が開示されている。 As an example of a conventional illuminated key sheet, there is one in which a key base on which a key top is arranged is a light guide. For example, Patent Document 1 discloses that “a light guide film made of a transparent material that guides light from a light source and a light guide film that is formed on the back surface of the light guide film and that emits light from the light source. A key base comprising: a reflecting means for reflecting the key top formed on the key top; and a pusher provided on the back surface of the reflecting means so as to correspond to the key top ”(Claim 1 of Patent Document 1) Reference).
特開２００８－１３０５０６JP2008-130506
　しかし、特許文献１に「上記各キートップ６、６、・・・は、・・・例えば天面加飾タイプ或いは裏面加飾タイプの表示が形成されている」（特許文献１の明細書[００２３]参照）との記述があるように、従来の照光式キーシートでは、表示要素を表示する表示部がキートップに設けられている。すなわち、従来の照光式キーシートでは、導光部（導光フィルム）が表示部の下側に配置され、表示要素が下側から照らされる（特許文献１の図４等を参照）。このため、従来の照光式キーシートでは、表示要素を、透光性を有する抜き文字等で表現する必要があった。このため、表示要素を表示する表示部の選択には限界があった。 However, Patent Document 1 states that “the key tops 6, 6,... Are formed with, for example, a top surface decoration type or a back surface decoration type display” (the specification of Patent Document 1 [ In the conventional illuminated key sheet, a display unit for displaying display elements is provided on the key top. That is, in the conventional illumination type key sheet, the light guide part (light guide film) is arranged on the lower side of the display part, and the display element is illuminated from the lower side (see FIG. 4 of Patent Document 1). For this reason, in the conventional illumination type key sheet, it was necessary to express the display element with a transparent character or the like having translucency. For this reason, there is a limit to the selection of the display unit that displays the display element.
　本発明は上記点に鑑みてなされたものであり、その日的とするところは、表示部の選択を自由にできる照光式キーシートを提供することにある。 The present invention has been made in view of the above-mentioned points, and it is an object of the present invention to provide an illuminated key sheet that can freely select a display unit.
　本発明に係る照光式キーシートは、
　照光式キーシートにおいて、
　表示要素を表示する表示部と、
　前記表示部の上方に位置するとともに、受光部で受光した光を導光し、導光した光により前記表示要素を上側から照らす導光部と、
　を備える。 Illuminated key sheet according to the present invention,
In illuminated key sheet,
A display unit for displaying display elements;
A light guide unit that is located above the display unit, guides light received by the light receiving unit, and illuminates the display element from above with the guided light; and
Is provided.
　また、本発明に係る照光式キーシートの一例として、
　前記導光部は、透明であり、導光形状を有する。 As an example of an illuminated key sheet according to the present invention,
The light guide part is transparent and has a light guide shape.
　また、本発明に係る照光式キーシートの一例として、
　前記導光部は、前記受光部から遠ざかるにつれて厚さが薄くなっている。 As an example of an illuminated key sheet according to the present invention,
The thickness of the light guide portion decreases as the distance from the light receiving portion increases.
　また、本発明に係る照光式キーシートの一例として、
　前記表示部は、非透光性を有し、かつ、非自発光である。 As an example of an illuminated key sheet according to the present invention,
The display unit is non-translucent and non-self-luminous.
　また、本発明に係る照光式キーシートの一例として、この照光式キーシートは、
　前記表示部の下方の位置に押し子をさらに備える。 As an example of the illuminated key sheet according to the present invention, the illuminated key sheet is
A pusher is further provided at a position below the display unit.
　また、本発明に係る照光式キーシートの一例として、この照光式キーシートは、
　前記導光部の上方に位置する透光性を有するキー部材をさらに備え、
　前記透光性を有するキー部材は、表面全面に固着層を設けたシート状部材と、前記固着層により前記シート状部材の表面に固着したキーと、を備える。 As an example of the illuminated key sheet according to the present invention, the illuminated key sheet is
Further comprising a translucent key member located above the light guide,
The translucent key member includes a sheet-like member provided with a fixing layer on the entire surface, and a key fixed to the surface of the sheet-like member by the fixing layer.
　また、本発明に係る照光式キーシートの一例として、
　前記表示部は、電子ペーパーである。 As an example of an illuminated key sheet according to the present invention,
The display unit is electronic paper.
　本発明においては、以下の定義が適用される。
（１）「表示要素」とは、照光式キーシートが備える表示部が表示するデザインの要素をいう。「表示要素」は、例えば、キーの機能を表す数字、文字、記号、又は図形等をいうが、キーの区画を示す仕切り線、又は、キーの機能と関係のないグラフィックアートであっても良い。表示部の例としては、所定の部材に設けた加飾層と、電子ペーパー又は反射型ＬＣＤ（液晶表示装置）等のディスプレイ部材と、がある。加飾層は、印刷又は塗装等の適宜の方法で設けることができる。
（２）「透光性」とは、光を透過させる性質をいう。「透光性」を有する構成要素の例は、透過率が３０パーセント以上である部分を少なくとも一部に有する構成要素である。「透光性」を有する構成要素のさらに具体的な例は、透明の構成要素、または、貫通孔等の物質が存在しない部分を有する構成要素である。
（３）「透明」とは、無色透明の他、有色透明も含む。
（４）「非透光性」とは、完全に光を透過しない性質をいうが、この光を少量透過する性質も含む。「非透光性」を有する構成要素の例は、この構成要素の少なくとも一部の光の透過率が３０パーセント未満で、残りの部分が完全に光を透過しない部分である構成要素であるか、全ての部分が完全に光を透過しない構成要素である。
（５）「上方」及び「上側」等に用いられる「上」とは、照光式キーシートのキーの天面側の方向をいう。
（６）「表面」とは、照光式キーシートのキーの天面側の面をいう。
（７）「下方」、「下側」及び「下面」等に用いられる「下」とは、上記「上」と反対の方向であり、例えば、照光式キーシートを配置する基板側の方向をいう。
（８）「裏面」とは、上記「表面」と反対の面をいい、照光式キーシートを配置する基板側の面をいう。
（９）「側面」とは、「表面」と「裏面」とを除いた面である。
（１０）「光」とは、主に可視光をいう。 In the present invention, the following definitions apply.
(1) “Display element” refers to an element of a design displayed by a display unit included in an illuminated key sheet. “Display element” refers to, for example, a number, character, symbol, figure, or the like that represents the function of a key, but may be a partition line that indicates a key section or graphic art that is not related to the function of a key. . Examples of the display unit include a decorative layer provided on a predetermined member and a display member such as electronic paper or a reflective LCD (liquid crystal display device). The decorative layer can be provided by an appropriate method such as printing or painting.
(2) “Translucency” refers to the property of transmitting light. An example of a component having “translucency” is a component having at least a portion having a transmittance of 30% or more. A more specific example of the component having “translucency” is a component having a transparent component or a portion where a substance such as a through hole is not present.
(3) “Transparent” includes colorless and transparent as well as colored and transparent.
(4) “Non-translucent” means a property that does not transmit light completely, but also includes a property that transmits a small amount of this light. An example of a component having “non-translucency” is a component in which the light transmittance of at least a part of the component is less than 30% and the remaining part is a part that does not transmit light completely. All components are components that do not transmit light completely.
(5) “Up” used for “upper” and “upper” refers to the direction of the top surface of the key of the illumination type key sheet.
(6) “Surface” means the top surface of the key of the illuminated key sheet.
(7) “Lower” used for “lower”, “lower”, “lower” and the like is a direction opposite to the above “upper”, for example, the direction on the substrate side on which the illumination type key sheet is arranged. Say.
(8) The “back surface” refers to a surface opposite to the “front surface”, and refers to a substrate side surface on which the illumination type key sheet is arranged.
(9) The “side surface” is a surface excluding the “front surface” and the “back surface”.
(10) “Light” mainly refers to visible light.
発明の効果
　本発明に係る照光式キーシートでは、導光部が表示部の上方に位置するので、表示部を下側から照らすのではなく、上側から照らすことができる。このため、表示部の選択の限界が無くなり、表示部の選択を自由にできる。 Effect of the Invention In the illuminated key sheet according to the present invention, the light guide part is located above the display part, so that the display part can be illuminated from the upper side, not from the lower side. For this reason, the limit of selection of a display part is lost, and selection of a display part can be made freely.
照光式キーシートの一実施形態を組み込んだ携帯電話機の斜視図である。It is a perspective view of the mobile telephone incorporating one Embodiment of an illumination type key sheet. 照光式キーシートの一実施形態の分解斜視図である。なお、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。It is a disassembled perspective view of one Embodiment of an illumination type key sheet. In addition, the part enclosed with the circle | round | yen in a figure shows a mode that the light guide part was expanded. 照光式キーシートが備える押し子シートを裏面側からみた斜視図である。It is the perspective view which looked at the presser sheet | seat with which an illumination type key sheet | seat is provided from the back surface side. 照光式キーシートの一実施形態の概略断面図である。なお、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。It is a schematic sectional drawing of one Embodiment of an illumination type key sheet. In addition, the part enclosed with the circle | round | yen in a figure shows a mode that the light guide part was expanded. 導光部が光源からの光を導光する様子を説明する概略説明図である。It is a schematic explanatory drawing explaining a mode that a light guide part guides the light from a light source. 導光部上にキー部材を有する照光式キーシートの実施形態の分解斜視図である。なお、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。It is a disassembled perspective view of embodiment of the illumination type key sheet | seat which has a key member on a light guide part. In addition, the part enclosed with the circle | round | yen in a figure shows a mode that the light guide part was expanded. 導光部上にキー部材を有する照光式キーシートの実施形態の概略断面図である。なお、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。It is a schematic sectional drawing of embodiment of the illumination type key sheet | seat which has a key member on a light guide part. In addition, the part enclosed with the circle | round | yen in a figure shows a mode that the light guide part was expanded. 導光部上にキー部材を有する照光式キーシートの実施形態を組み込んだ携帯電話機の斜視図である。It is a perspective view of the mobile telephone incorporating the embodiment of the illumination type key sheet which has a key member on a light guide part.
　本発明の実施形態の例について図面を参照しながら説明する。なお、図面において、同様のもの、対応するもの、又は総称できるものについては同じ符号を付して説明する場合がある。本発明は下記の実施形態にのみ限定されるものではない。本発明の要旨を逸脱しない範囲で下記の実施形態に変更（例えば構成要素の省略又は付加、又は、構成要素の形状の変更等）を加えることが出来るのはもちろんである。 An example of an embodiment of the present invention will be described with reference to the drawings. In the drawings, the same, corresponding, or generic names may be described with the same reference numerals. The present invention is not limited only to the following embodiments. It goes without saying that modifications (for example, omission or addition of components or change of the shape of components) can be added to the following embodiments without departing from the gist of the present invention.
　図１は、本発明に係る照光式キーシートを組み込んだ携帯電話機の一実施形態の斜視図である。図１のように、本実施形態の照光式キーシート１（本実施形態の説明中では単にキーシート１という。）は、携帯電話機１００に組み込まれる。詳しくは後述するが、キーシート１は、表示部５と、その上に位置する導光部３と、を備える（図２等を参照）。表示部５は、表示要素５ａと、表示要素５ｂと、を表示する。表示要素５ａは、キーの機能を表す数字又は記号である。表示要素５ｂは、キーの区画を示す仕切り線である。 FIG. 1 is a perspective view of an embodiment of a mobile phone incorporating an illuminated key sheet according to the present invention. As shown in FIG. 1, the illuminated key sheet 1 of the present embodiment (simply referred to as the key sheet 1 in the description of the present embodiment) is incorporated in the mobile phone 100. As will be described in detail later, the key sheet 1 includes a display unit 5 and a light guide unit 3 positioned thereon (see FIG. 2 and the like). The display unit 5 displays a display element 5a and a display element 5b. The display element 5a is a number or a symbol representing the function of the key. The display element 5b is a partition line indicating a key section.
　携帯電話機１００の操作者（キーの操作者ともいう、以下では、単に操作者という。）は、照光時及び非照光時において、導光部３を介して表示要素５ａと、表示要素５ｂと、を視認する。非照光時には、携帯電話機１００の外部の光（例えば自然光）により、表示要素５ａ及び５ｂが照らされる。操作者は、この照らされた表示要素５ａ及び５ｂを視認する。照光時には、携帯電話機１００内部の光源（以下では、単に光源１０１（図５参照）という。）からの光が導光部３により導光され、導光された光により、表示要素５ａ及び５ｂが照らされる。操作者は、この照らされた表示要素５ａ及び５ｂを視認する。 An operator of the cellular phone 100 (also referred to as an operator of a key, hereinafter simply referred to as an operator), when illuminated and when not illuminated, displays the display element 5a, the display element 5b, and the display element 5b. Visually check. When not illuminated, the display elements 5a and 5b are illuminated by light outside the mobile phone 100 (for example, natural light). The operator visually recognizes the illuminated display elements 5a and 5b. At the time of illumination, light from a light source (hereinafter simply referred to as the light source 101 (see FIG. 5)) inside the mobile phone 100 is guided by the light guide unit 3, and the display elements 5a and 5b are guided by the guided light. Illuminated. The operator visually recognizes the illuminated display elements 5a and 5b.
　図２は、本実施形態の照光式キーシートの分解斜視図である。なお、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。図３は、本実施形態に係る照光式キーシートが備える押し子シートを裏面側からみた斜視図である。図４は、本実施形態に係る照光式キーシートの概略断面図である。なお、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。 FIG. 2 is an exploded perspective view of the illuminated key sheet of the present embodiment. In addition, the part enclosed with the circle | round | yen in a figure shows a mode that the light guide part was expanded. FIG. 3 is a perspective view of the presser sheet provided in the illuminated key sheet according to the present embodiment as seen from the back side. FIG. 4 is a schematic cross-sectional view of the illuminated key sheet according to the present embodiment. In addition, the part enclosed with the circle | round | yen in a figure shows a mode that the light guide part was expanded.
　キーシート１は、表示部５と、表示部５の上方に位置する導光部３と、表示部５の下方に位置する押し子シート７と、を備える。押し子シート７は押し子７ａａを有するので、キーシート１は表示部５の下方に位置する押し子７ａａを有する。 The key sheet 1 includes a display unit 5, a light guide unit 3 positioned above the display unit 5, and a pusher sheet 7 positioned below the display unit 5. Since the pusher sheet 7 has the pusher 7aa, the key sheet 1 has the pusher 7aa located below the display unit 5.
　導光部３は、受光部３ａ（図５参照、以下同じ）を備える。導光部３は、受光部３ａで受光した光（光源１０１からの光）を導光し、導光した光により表示要素５ａ及び５ｂ（図１参照、以下同じ。）を上側から照らす（照明する）。これによって、表示要素５ａ及び５ｂを表示する表示部５で反射された光が導光部３を通って外部に出射して、携帯電話機１００の操作者に表示部５の表示要素５ａ及び５ｂを視認可能にする。導光部３が表示部５の上方に位置するので導光部３は、表示要素５ａ及び５ｂを上側から照らすことができる。受光部３ａは、キーシート１を携帯電話１００に組み込んだ場合における、導光部３の側面のうちの光源１０１に最も近い面になる。受光部３ａ及び光源１０１は、複数あってもよい。 The light guide unit 3 includes a light receiving unit 3a (see FIG. 5, the same applies hereinafter). The light guide unit 3 guides light (light from the light source 101) received by the light receiving unit 3a, and illuminates the display elements 5a and 5b (see FIG. 1, the same applies hereinafter) from above with the guided light (illumination). To do). Thereby, the light reflected by the display unit 5 that displays the display elements 5a and 5b is emitted to the outside through the light guide unit 3, and the display element 5a and 5b of the display unit 5 is transmitted to the operator of the mobile phone 100. Make it visible. Since the light guide part 3 is located above the display part 5, the light guide part 3 can illuminate the display elements 5a and 5b from the upper side. The light receiving unit 3 a is a surface closest to the light source 101 among the side surfaces of the light guide unit 3 when the key sheet 1 is incorporated in the mobile phone 100. There may be a plurality of light receiving units 3a and light sources 101.
　導光部３は、シート状に形成される。また、導光部３は、受光部３ａから遠ざかるにつれて厚さが薄くなっている。本実施形態では、導光部３の厚さは、線形的に薄くなっている。他の例として、導光部３の厚さは、非線形的又は不連続的に薄くなってもよい。 The light guide 3 is formed in a sheet shape. Further, the thickness of the light guide unit 3 decreases as the distance from the light receiving unit 3a increases. In the present embodiment, the thickness of the light guide 3 is linearly thin. As another example, the thickness of the light guide 3 may be reduced nonlinearly or discontinuously.
　さらに、導光部３は、透明であり、導光形状３ｂを有する。導光部３は、表示部５の上に位置するので透明である必要がある。キーの操作者は、非照光時及び照光時において、表示要素５ａ及び５ｂを導光部３を介して視認するからである。 Furthermore, the light guide 3 is transparent and has a light guide shape 3b. Since the light guide unit 3 is located on the display unit 5, it needs to be transparent. This is because the key operator visually recognizes the display elements 5 a and 5 b through the light guide unit 3 when not illuminated and illuminated.
　導光形状３ｂとは、受光部３ａにより受光した光を反射して導光部３内部に光を導光させ、導光させた光で表示部５（表示要素５ａ及び５ｂ）を照らす形状である。導光形状３ｂは、適宜の位置に設けることができる。本実施形態では、導光部３の表面全面に導光形状３ｂを設けている。しかし、導光形状３ｂは、導光部３の表面の少なくとも一部、裏面の少なくとも一部、又はその両方に設けることができる。操作者が導光部３を介して表示要素５ａ及び５ｂを視認することができるように、導光形状３ｂは、微細な形状の集合により構成することが望ましい。本実施形態の導光形状３ｂは、主に光を反射する反射面３ｂａと、主に光を透過する透過面３ｂｂと、からなる微細な凹凸の集合である。この凹凸は、直線状に設けられる。直線状の凹凸は、受光部３ａと平行になるように設けられる。導光部３は、受光部３ａから遠ざかるにつれて厚さが薄くなっている。なお、導光部３による光の導光については後述する。 The light guide shape 3b is a shape in which the light received by the light receiving unit 3a is reflected to guide the light into the light guide unit 3, and the display unit 5 ( display elements 5a and 5b) is illuminated with the light guided. is there. The light guide shape 3b can be provided at an appropriate position. In the present embodiment, the light guide shape 3 b is provided on the entire surface of the light guide unit 3. However, the light guide shape 3b can be provided on at least a part of the front surface of the light guide unit 3, at least a part of the back surface, or both. It is desirable that the light guide shape 3b is constituted by a set of fine shapes so that the operator can visually recognize the display elements 5a and 5b through the light guide unit 3. The light guide shape 3b of the present embodiment is a set of fine irregularities including a reflection surface 3ba that mainly reflects light and a transmission surface 3bb that mainly transmits light. This unevenness is provided in a straight line. The linear unevenness is provided so as to be parallel to the light receiving portion 3a. The thickness of the light guide unit 3 decreases as the distance from the light receiving unit 3a increases. The light guide by the light guide 3 will be described later.
　上記凹凸の形状の一例を以下に示す。なお、下記の記号等は、図５参照。
（１）反射面３ｂａと、透過面３ｂｂとの間の角度θ１・・・１００度から１４０度
（２）透過面３ｂｂと水平面との間の角度θ２・・・・・・・１．０度から３．０度
（３）凸部の頂点間の長さＤ・・・・・・・・・・・・・・０．１ｍｍから０．４ｍｍ An example of the shape of the irregularities is shown below. Refer to FIG. 5 for the following symbols.
(1) Angle θ1 between the reflecting surface 3ba and the transmitting surface 3bb... 100 degrees to 140 degrees. (2) Angle θ2 between the transmitting surface 3bb and the horizontal surface... 1.0 degrees. To 3.0 degrees (3) Length D between the vertices of the convex part ... 0.1 mm to 0.4 mm
　導光部３は、合成樹脂又はガラス等の適宜の材料により形成される。合成樹脂の例は、一般的な熱可塑性樹脂又は熱硬化性樹脂である。一般的な熱可塑性樹脂又は熱硬化性樹脂の例は、ＰＥＴ（ポリエチレンテレフタレート系）樹脂、ＰＣ（ポリカーボネイト系）樹脂、ポリウレタン系樹脂、アクリル系樹脂、又はシリコーン系樹脂である。合成樹脂は、アクリル系、エポキシ系、ビニル系、又はシリコーン系等の電磁波硬化性樹脂又は電子線硬化性樹脂であってもよい。電磁波硬化性樹脂とは、電磁波が照射されると硬化する樹脂で、紫外線硬化性樹脂（ＵＶ硬化性樹脂）又は可視光硬化性樹脂などの光硬化性樹脂があり、また、電子線硬化性樹脂とは、電子線（陰極線）が照射されると硬化する樹脂である。 The light guide 3 is formed of an appropriate material such as synthetic resin or glass. An example of the synthetic resin is a general thermoplastic resin or thermosetting resin. Examples of general thermoplastic resins or thermosetting resins are PET (polyethylene terephthalate) resin, PC (polycarbonate) resin, polyurethane resin, acrylic resin, or silicone resin. The synthetic resin may be an electromagnetic wave curable resin or an electron beam curable resin such as acrylic, epoxy, vinyl, or silicone. The electromagnetic wave curable resin is a resin that cures when irradiated with electromagnetic waves, and includes an ultraviolet curable resin (UV curable resin) or a photo curable resin such as a visible light curable resin, and an electron beam curable resin. Is a resin that cures when irradiated with an electron beam (cathode beam).
　導光部３の形成方法は、材料等によって適宜の方法を採用できる。例えば、導光部３は射出成形により形成される。射出成形の金型には、導光形状３ｂを形成するための形状が微細加工等により設けられる。 The light guide unit 3 can be formed by any appropriate method depending on the material. For example, the light guide 3 is formed by injection molding. The injection mold is provided with a shape for forming the light guide shape 3b by fine processing or the like.
　表示部５は、表示要素５ａ及び５ｂを表示する。本実施形態では、表示部５は、電子ペーパーである。電子ペーパーは、携帯電話機１００に設けられた所定の駆動部に接続される。そして、この電子ペーパーは、前記駆動部により駆動され、表示要素５ａ及び５ｂを表示する。他の例として、表示部５は、導光部３の裏面又は押し子シートの表面に設けた加飾層であってもよい。加飾層には、表示要素が含まれ、この加飾層は、表示要素５ａ及び５ｂを表示することになる。 Display unit 5 displays display elements 5a and 5b. In the present embodiment, the display unit 5 is electronic paper. The electronic paper is connected to a predetermined drive unit provided in the mobile phone 100. And this electronic paper is driven by the said drive part, and displays the display elements 5a and 5b. As another example, the display unit 5 may be a decorative layer provided on the back surface of the light guide unit 3 or the surface of the presser sheet. The decoration layer includes a display element, and this decoration layer displays the display elements 5a and 5b.
　表示部５は、非透光性を有し、かつ、非自発光である。表示部５がこのような性質のものを採用できる理由は、導光部３が表示部５の上方に位置し、表示部３を、下側から照らすのではなく、上側から照らすことができることにある。このように、導光部３が表示部５の上方に位置し、導光部３が導光する光で表示部（表示要素５ａ及び５ｂ）を上側から照らすことにより、表示部３の選択の限界が無くなり、表示部３の選択を自由にできる。非透光性を有し、かつ、非自発光である表示部５の例としては、上記電子ペーパーと、反射型ＬＣＤと、非透光性を有し、かつ、非自発光である加飾層と、がある。 The display unit 5 is non-translucent and non-self-luminous. The reason why the display unit 5 can adopt such a property is that the light guide unit 3 is positioned above the display unit 5 and the display unit 3 can be illuminated from the upper side, not from the lower side. is there. In this way, the light guide 3 is positioned above the display 5 and the display ( display elements 5a and 5b) is illuminated from above by the light guided by the light guide 3. There is no limit, and the display unit 3 can be freely selected. Examples of the display unit 5 that has non-light-transmitting properties and non-self-light emission include the electronic paper, the reflective LCD, and the decoration that has non-light-transmitting properties and non-self-light emission. There are layers.
　押し子シート７は、シート状部材７ｂに押し子層７ａを一体的に設けて形成される。押し子層７ａは、押し子７ａａと、この押し子７ａａの周辺に位置する薄肉部７ａｂからなる。押し子シート７は、適宜の方法により形成される。押し子シート７の形成方法の一例は、金型にシート状部材７ｂをインサートしてシート状部材７ｂに押し子層７ａを一体的に設けるインサート成形である。また、押し子シート７の形成方法の一例は、シート状部材７ｂに押し子層７ａを印刷するグラビア印刷である。 The pusher sheet 7 is formed by integrally providing a pusher layer 7a on a sheet-like member 7b. The pusher layer 7a includes a pusher 7aa and a thin portion 7ab positioned around the pusher 7aa. The pusher sheet 7 is formed by an appropriate method. An example of a method for forming the pusher sheet 7 is insert molding in which the sheet-like member 7b is inserted into a mold and the pusher layer 7a is integrally provided on the sheet-like member 7b. An example of a method for forming the presser sheet 7 is gravure printing in which the presser layer 7a is printed on the sheet-like member 7b.
　シート状部材７ｂ及び押し子層７ａは、合成樹脂等の適宜の材料により形成される。合成樹脂の例は、一般的な熱可塑性樹脂又は熱硬化性樹脂である。一般的な熱可塑性樹脂又は熱硬化性樹脂の例は、ＰＥＴ（ポリエチレンテレフタレート系）樹脂、ＰＣ（ポリカーボネイト系）樹脂、ポリウレタン系樹脂、アクリル系樹脂、又はシリコーン系樹脂である。合成樹脂は、アクリル系、エポキシ系、ビニル系、又はシリコーン系等の電磁波硬化性樹脂又は電子線硬化樹脂であってもよい。シート状部材７ｂは、ポリウレタンシート等が好適である。押し子層７ａは、電磁波硬化性樹脂又はシリコーンゴム等により形成するのが好適である。 The sheet-like member 7b and the pusher layer 7a are formed of an appropriate material such as a synthetic resin. An example of the synthetic resin is a general thermoplastic resin or thermosetting resin. Examples of general thermoplastic resins or thermosetting resins are PET (polyethylene terephthalate) resin, PC (polycarbonate) resin, polyurethane resin, acrylic resin, or silicone resin. The synthetic resin may be an electromagnetic wave curable resin or an electron beam curable resin such as acrylic, epoxy, vinyl, or silicone. The sheet-like member 7b is preferably a polyurethane sheet or the like. The presser layer 7a is preferably formed of an electromagnetic wave curable resin or silicone rubber.
　なお、押し子シート７は表示部５の下方にあるので、押し子シート７の構成要素のうちの少なくとも一つは、非透光性であってもよい。照光時には表示要素５ａ及び５ｂを上側から照らすので、表示要素５ａ及び５ｂの視認性を確保できるからである。このように、導光部３が表示部５の上方にあり、導光部３が導光した光により表示要素５ａ及び５ｂが上から照らされることで、押し子シート７、特に押し子７ａａの設計の幅が広がる。また下記のように照光による影が出来なければ、きれいに表示要素５ａ及び５ｂを操作者に視認させることが出来る。 Since the pusher sheet 7 is below the display unit 5, at least one of the constituent elements of the pusher sheet 7 may be non-translucent. This is because the display elements 5a and 5b are illuminated from above at the time of illumination, so that the visibility of the display elements 5a and 5b can be ensured. Thus, the light guide 3 is above the display 5 and the display elements 5a and 5b are illuminated from above by the light guided by the light guide 3, so that the pusher sheet 7, especially the pusher 7aa, is illuminated. The range of design is expanded. Further, if there is no shadow due to illumination as described below, the display elements 5a and 5b can be clearly seen by the operator.
　また、照光時には表示要素５ａ及び５ｂを上側から照らすので、表示部５が非透光性である場合には、表示部５の下の押し子シート７（特に押し子７ａａ）の影によって表示要素５ａ及び５ｂの視認性及び又はキーシート１の外観が悪くなるといったような不都合が解消される。このため、きれいに表示要素５ａ及び５ｂを操作者に視認させることが出来る。これは、特に導光部３と、表示部５との間に、他の構成要素が介在しないときに最も言える。これにより、押し子シート７、特に押し子７ａａの設計の幅が広がる。 Further, since the display elements 5a and 5b are illuminated from above when illuminated, when the display unit 5 is non-translucent, the display elements are displayed by the shadow of the pusher sheet 7 (particularly the pusher 7aa) under the display unit 5. Problems such as the visibility of 5a and 5b and / or the appearance of the key sheet 1 are eliminated. For this reason, the display elements 5a and 5b can be visually recognized by the operator. This is most particularly true when no other components are interposed between the light guide 3 and the display 5. Thereby, the width of the design of the pusher sheet 7, in particular, the pusher 7aa is expanded.
　キーシート１は、表示部５の下方の位置に押し子７ａａを有していれば良い。このため、押し子をキーシート１の構成要素とする方法は他にもある。例えば、押し子又はこれを含む押し子層を表示部３の裏面に電磁波硬化性樹脂等で直接一体的に形成してもよい。 The key sheet 1 only needs to have a pusher 7aa at a position below the display unit 5. For this reason, there are other methods for using the pusher as a constituent element of the key sheet 1. For example, the pusher or the pusher layer including the pusher may be directly integrally formed on the back surface of the display unit 3 with an electromagnetic wave curable resin or the like.
　キーシート１の各構成要素（導光部３、表示部５、及び押し子７ａａ）の位置関係が重要である。位置関係とは、携帯電話機１００にキーシート１を組み込んだ場合における位置関係である。このため、隣接する構成要素同士の少なくとも一部は固着して固定してもよいし、隣接する構成要素同士の少なくとも一部が当接するだけでも良いし、構成要素同士の問に空間又は他の構成要素が介在していても良い。なお、導光部３と表示部５との問に構成要素がある場合及び又は両者を固着する場合には、この構成要素及び又は固着するのに用いる固着層は表示要素５ａ及び５ｂの視認性を阻害しないように透光性を有する必要がある。 The positional relationship between the constituent elements of the key sheet 1 (the light guide unit 3, the display unit 5, and the pusher 7aa) is important. The positional relationship is a positional relationship when the key sheet 1 is incorporated in the mobile phone 100. For this reason, at least a part of the adjacent components may be fixed and fixed, or at least a part of the adjacent components may be in contact with each other. A component may intervene. In addition, when there is a component in the question between the light guide unit 3 and the display unit 5 and / or when both are fixed, the component and / or the fixing layer used for fixing is the visibility of the display elements 5a and 5b. It is necessary to have translucency so as not to hinder.
　導光部３及び表示部５を設計すれば、導光部３の上に適宜キー部材を設けることも出来るため（例えば、図６～８参照）、キーシート１の設計が自由に出来るため、デザインの自由化等を実現できる。 If the light guide unit 3 and the display unit 5 are designed, a key member can be appropriately provided on the light guide unit 3 (see, for example, FIGS. 6 to 8), so that the key sheet 1 can be designed freely. Design liberalization can be realized.
　さらに、表示部５が電子ペーパー又は反射型ＬＣＤなどのディスプレイ部材であれば、表示要素５ａ及び５ｂのデザインを自由に変える事ができる。このため、導光部３及び表示部５を予め生産しておき、キー部材を後から設ける又は設けない等のキーシート１全体のデザインが出来る。キーシート１全体のデザインが決定した後で、表示要素５ａ及び５ｂのデザインが出来るからである。これにより、キーシート１の在庫管理の容易化、キーシート１の提供の迅速化が出来る。 Furthermore, if the display unit 5 is a display member such as electronic paper or a reflective LCD, the design of the display elements 5a and 5b can be freely changed. For this reason, the light guide part 3 and the display part 5 are produced in advance, and the entire key sheet 1 can be designed such that the key member is provided or not provided later. This is because the display elements 5a and 5b can be designed after the design of the entire key sheet 1 is determined. Thereby, the stock management of the key sheet 1 can be facilitated and the provision of the key sheet 1 can be speeded up.
　なお、本実施形態において、導光部３の中の少なくとも一の表示要素５ａに対応する領域（表示要素５ｂにより仕切られた領域でもある。）がキーになる。すなわち、導光部３は、各キーの役割も果たす。このように、キーを構成する部材に導光形状３ａを設けて導光部３とすることができる。このように、導光部３に導光以外の他の役割を付加しても良い。 In the present embodiment, an area (also an area partitioned by the display element 5b) corresponding to at least one display element 5a in the light guide 3 is a key. That is, the light guide 3 also plays the role of each key. Thus, the light guide part 3 can be provided by providing the light guide shape 3a on the member constituting the key. In this way, a role other than the light guide may be added to the light guide unit 3.
　携帯電話機１００にキーシート１を組み込んだ場合、押し子７ａａは携帯電話機１００の基板上に設けたメタルドームに当接する。導光部３の所定の位置（すなわち所定のキーであり、押し子７ａａに対応している。）を操作者が押圧すると、各構成要素（導光部３、表示部５、及び押し子シート７）が変形する。とくに、各構成要素の前記所定の位置に対応する領域が下方に移動するように変形する。これにより、前記所定のキーに対応する押し子７ａａが下方に移動し、下方に移動した押し子７ａａがメタルドームを押圧変形させる。この押圧変形により、メタルドームは、メタルドーム直下の接点を短絡させるともに、クリック感を発生させる。なお、前記の構成要素の変形を助けるために、各構成要素に適宜切り込み及び又は溝等を入れても良い。 When the key sheet 1 is incorporated in the mobile phone 100, the pusher 7aa comes into contact with a metal dome provided on the substrate of the mobile phone 100. When the operator presses a predetermined position (that is, a predetermined key and corresponds to the pusher 7aa) of the light guide unit 3, each component (the light guide unit 3, the display unit 5, and the pusher sheet) is pressed. 7) is deformed. In particular, the region corresponding to the predetermined position of each component is deformed so as to move downward. As a result, the pusher 7aa corresponding to the predetermined key moves downward, and the pusher 7aa moved downward press-deforms the metal dome. By this pressing deformation, the metal dome short-circuits the contact point immediately below the metal dome and generates a click feeling. In addition, in order to assist the deformation | transformation of the said component, you may make a notch | incision and / or a groove | channel etc. in each component suitably.
　図５は、導光部が光源からの光を導光する様子を説明する概略説明図である。光源１０１は、棒状のもの等を採用することが出来、これにより受光部３ａ全体を均一に照らすことができる。本実施形態のように、光源１０１の一例は、ＬＥＤ（発光ダイオード）を備えるものである。図５の矢印は、光の経路を示す。光源１０１からの光（光源１０１により出射された光）は、受光部３ａが受光する。受光した光は、導光部３内を進む。この光は反射面３ｂａ、及び又は、導光部の下面の上側面３ｃ（又は、表示部５の表面等）を反射しながら導光部３内を進む（光が導光される）。そして、この光は、表示部３（特に表示要素等）で反射し、透過面３ｂｂを透過して導光部３から外部に出射し、操作者の目に入る。このように、導光部３は、受光部３ａで受光した光（光源１０１からの光）を導光し、導光した光により表示要素５ａ及び５ｂを上側から照らすので、操作者は照光時において表示要素５ａ及び５ｂを視認できる。 FIG. 5 is a schematic explanatory diagram for explaining how the light guide unit guides light from the light source. As the light source 101, a rod-shaped one or the like can be adopted, and thereby the entire light receiving unit 3a can be illuminated uniformly. As in this embodiment, an example of the light source 101 includes an LED (light emitting diode). The arrows in FIG. 5 indicate the light path. The light from the light source 101 (light emitted from the light source 101) is received by the light receiving unit 3a. The received light travels through the light guide 3. The light travels through the light guide 3 while reflecting the reflection surface 3ba and / or the upper side surface 3c of the lower surface of the light guide (or the surface of the display unit 5) (light is guided). Then, this light is reflected by the display unit 3 (particularly a display element or the like), passes through the transmission surface 3bb, and is emitted to the outside from the light guide unit 3 and enters the eyes of the operator. In this way, the light guide 3 guides the light received by the light receiver 3a (light from the light source 101) and illuminates the display elements 5a and 5b from above with the guided light, so that the operator can illuminate. The display elements 5a and 5b can be visually recognized.
　ところで、導光部３の厚さが受光部３ａから遠ざかるにつれて薄くなっていることと、導光部３に導光形状３ｂを設けることにより、導光部３は、表示部５（特に一以上の表示要素の集合）を均一に照らすことができる。これは特に、凹凸を導光部３の表面全面に受光部３ａと平行になるように設けることによっていえることでもある。これは、例えば、導光部３の厚さが受光部から遠ざかるにつれて薄くなるにつれて、導光部３内を進む光が反射面３ｂに当たりやすくなり、光が反射されやすくなり、この反射した光が表示部３で反射して透過面３ｂｂを透過しやすくなるからである。 By the way, the light guide 3 is reduced in thickness as it gets away from the light receiving part 3a, and the light guide 3 is provided with the light guide shape 3b. A set of display elements) can be illuminated uniformly. This is particularly true by providing the unevenness on the entire surface of the light guide 3 so as to be parallel to the light receiving portion 3a. This is because, for example, as the thickness of the light guide portion 3 decreases as the distance from the light receiving portion decreases, the light traveling in the light guide portion 3 is likely to hit the reflecting surface 3b, and the light is easily reflected. This is because the light is easily reflected by the display unit 3 and transmitted through the transmission surface 3bb.
　図６～８には、導光部の上に適宜キー部材を設けた照光式キーシートの実施形態を示す。図６は、本実施形態の照光式キーシートの分解斜視図であり、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。図７は、本実施形態の照光式キーシートの概略断面図であり、図中の丸で囲まれた部分は、導光部を拡大した様子を示す。図８は、本実施形態の照光式キーシートを組み込んだ携帯電話機の斜視図である。 6 to 8 show an embodiment of an illuminated key sheet in which a key member is appropriately provided on the light guide. FIG. 6 is an exploded perspective view of the illuminated key sheet of the present embodiment, and a portion surrounded by a circle in the drawing shows a state in which the light guide portion is enlarged. FIG. 7 is a schematic cross-sectional view of the illumination type key sheet of the present embodiment, and a portion surrounded by a circle in the drawing shows an enlarged view of the light guide. FIG. 8 is a perspective view of a mobile phone incorporating the illuminated key sheet of the present embodiment.
　本実施形態の照光式キーシート１１（本実施形態の説明中では単にキーシート１１という。）は、照光式キーシート１と同じものと、この照光式キーシート１の上方の位置にあるキー部材１９と、を備える。導光部１３は導光部３に対応し、表示部１５は表示部５に対応し、押し子シート１７は押し子シート７に対応する。以下の説明では、上記の実施形態と異なる部分について説明し、重複する説明については省略する。 The illuminated key sheet 11 of the present embodiment (simply referred to as the key sheet 11 in the description of the present embodiment) is the same as the illuminated key sheet 1 and a key member located above the illuminated key sheet 1. 19. The light guide unit 13 corresponds to the light guide unit 3, the display unit 15 corresponds to the display unit 5, and the pusher sheet 17 corresponds to the pusher sheet 7. In the following description, a different part from said embodiment is demonstrated and the overlapping description is abbreviate | omitted.
　キー部材１９は、導光部１３の上方に位置し、透光性を有する。キー部材１９は、表面全面に固着層１９ｃ（図７を参照、図６では省略。）を設けたシート状部材１９ｂと、固着層１９ｃによりシート状部材１９ｂの表面に固着したキー１９ａと、を備える。 The key member 19 is located above the light guide unit 13 and has translucency. The key member 19 includes a sheet-like member 19b provided with a fixing layer 19c (see FIG. 7, omitted in FIG. 6) on the entire surface, and a key 19a fixed to the surface of the sheet-like member 19b by the fixing layer 19c. Prepare.
　表示部１５が表示する表示要素１５ａ（表示要素５ａに対応する。）及び１５ｃは、導光部１３とキー部材１９とを介して視認されるため、キー部材１９も透光性を有する必要がある。このため、キー部材１９を構成するキー１９ａ、シート状部材１９ｂ、及び固着層１９ｃは透光性を有する必要があり、特に透明であることが望ましい。 Since the display elements 15a (corresponding to the display element 5a) and 15c displayed by the display unit 15 are visually recognized through the light guide unit 13 and the key member 19, the key member 19 also needs to have translucency. is there. For this reason, the key 19a, the sheet-like member 19b, and the fixing layer 19c constituting the key member 19 are required to have translucency, and are particularly preferably transparent.
　キー１９ａは、操作感の観点から硬質であることが望ましい。また、シート状部材１９ｂは、キー１９ａの下方への移動を阻害しないように、柔軟性を有することが望ましい。キー１９ａ及びシート状部材１９ｂは、合成樹脂等の適宜の材料により形成される。合成樹脂の例は、一般的な熱可塑性樹脂又は熱硬化性樹脂である。一般的な熱可塑性樹脂又は熱硬化性樹脂の例は、ＰＥＴ（ポリエチレンテレフタラート系）樹脂、ＰＣ（ポリカーボネイト系）樹脂、ポリウレタン系樹脂、アクリル系樹脂、又はシリコーン系樹脂等である。合成樹脂は、アクリル系、エポキシ系、ビニル系、又はシリコーン系等の電磁波硬化性樹脂又は電子線硬化樹脂であってもよい。シート状部材１９ｂは、ポリウレタンシート等が好適である。キー１９ａは、ＰＣ等により形成するのが好適である。 The key 19a is preferably hard from the viewpoint of operation feeling. Further, it is desirable that the sheet-like member 19b has flexibility so as not to hinder the downward movement of the key 19a. The key 19a and the sheet-like member 19b are formed of an appropriate material such as a synthetic resin. An example of the synthetic resin is a general thermoplastic resin or thermosetting resin. Examples of general thermoplastic resins or thermosetting resins are PET (polyethylene terephthalate) resin, PC (polycarbonate) resin, polyurethane resin, acrylic resin, or silicone resin. The synthetic resin may be an electromagnetic wave curable resin or an electron beam curable resin such as acrylic, epoxy, vinyl, or silicone. The sheet-like member 19b is preferably a polyurethane sheet or the like. The key 19a is preferably formed by a PC or the like.
　固着層１９ｃは、例えばホットメルト接着層によって実現される。固着層１９ｃがシート状部材１９ｂの表面全面に設けられていると、キー１９ａは、シート状部材１９ｂに全面接着される。これにより、接着剤が存在していない部分が無くなり、接着剤が存在している部分と存在しない部分があることによって出来る影の発生を防止でき、きれいに照光できる。 The fixing layer 19c is realized by a hot melt adhesive layer, for example. When the fixing layer 19c is provided on the entire surface of the sheet-like member 19b, the key 19a is adhered to the entire surface of the sheet-like member 19b. As a result, there is no portion where the adhesive is not present, and it is possible to prevent the occurrence of shadows caused by the presence of the portion where the adhesive is present and the portion where the adhesive is not present, and to illuminate cleanly.
　導光部１３の表示部１５（表示要素１５ａ又は１５ｃ）で反射され、透過面１３ｂｂ（透過面３ｂｂに対応する。）を透過した光は、キー部材１９内を透過して、操作者の目に入り、操作者は表示要素１５ａ又は１５ｃを視認する。 The light reflected by the display unit 15 ( display element 15a or 15c) of the light guide unit 13 and transmitted through the transmissive surface 13bb (corresponding to the transmissive surface 3bb) is transmitted through the key member 19 to the eyes of the operator. The operator visually recognizes the display element 15a or 15c.
　表示部１５は、表示要素１５ａの他、表示要素１５ｃを表示する。表示要素１５ｃは、キーの機能と関係のないグラフィックアートである。導光部３が表示部１５の上方に位置するために、このような斬新なデザインの携帯電話機１１０を提供できる。 The display unit 15 displays the display element 15c in addition to the display element 15a. The display element 15c is a graphic art unrelated to the key function. Since the light guide unit 3 is positioned above the display unit 15, the mobile phone 110 having such a novel design can be provided.
　導光部１３と、キー部材１９とは、少なくとも一部を固着して固定してもよいし、少なくとも一部が当接するだけでも良いし、両者の間に空間又は他の構成要素が介在していても良い。なお、導光部１３と、キー部材１９との間に構成要素がある場合及び又は両者を固着する場合には、この構成要素及び又は固着するのに用いる固着層は表示要素１５ａ及び１５ｃの視認性を阻害しないように透光性のものである必要がある。 At least a part of the light guide unit 13 and the key member 19 may be fixed and fixed, or at least a part of the light guide unit 13 and the key member 19 may be in contact with each other, and a space or other component is interposed between them. May be. In addition, when there exists a component between the light guide part 13 and the key member 19, and / or when both are fixed, this component and / or the fixing layer used for fixing are visible to the display elements 15a and 15c. It is necessary to be translucent so as not to disturb the sex.
　キー１９ａと、一以上の押し子１７ａａ（押し子７ａａに対応する。）と、は互いに対応して位置する。所定のキー１９ａを操作者が押圧すると、各構成要素（キー部材１９、導光部１３、表示部１５、及び押し子シート１７）が変形する。とくに、各構成要素の前記所定のキー１９ａに対応する領域が下方に移動するように変形する。これにより、前記所定のキー１９ａに対応する押し子１７ａａが下方に移動し、下方に移動した押し子１７ａａがこの押し子１７ａａに当接するメタルドームを押圧変形させる。 The key 19a and the one or more pushers 17aa (corresponding to the pushers 7aa) are positioned corresponding to each other. When the operator presses a predetermined key 19a, each component (key member 19, light guide unit 13, display unit 15, and pusher sheet 17) is deformed. In particular, the region corresponding to the predetermined key 19a of each component is deformed so as to move downward. As a result, the pusher 17aa corresponding to the predetermined key 19a moves downward, and the pusher 17aa moved downward press-deforms the metal dome that contacts the pusher 17aa.
１　　　　　　　　　　照光式キーシート
３　　　　　　　　　　導光部
３ａ　　　　　　　　　受光部
３ｂ　　　　　　　　　導光形状
３ｂａ　　　　　　　　反射面
３ｂｂ　　　　　　　　透過面
３ｃ　　　　　　　　　導光部の下面の上側面
５　　　　　　　　　　表示部
５ａ、５ｂ　　　　　　表示要素
７　　　　　　　　　　押し子シート
７ｂ　　　　　　　　　シート状部材
７ａ　　　　　　　　　押し子層
７ａａ　　　　　　　　押し子
７ａｂ　　　　　　　　薄肉部
１１　　　　　　　　　照光式キーシート
１３　　　　　　　　　導光部
１３ｂｂ　　　　　　　透過面
１５　　　　　　　　　表示部
１５ａ、１５ｃ　　　　表示要素
１７　　　　　　　　　押し子シート
１７ａａ　　　　　　　押し子
１９　　　　　　　　　キー部材
１９ａ　　　　　　　　キー
１９ｂ　　　　　　　　シート状部材
１９ｃ　　　　　　　　固着層
１００　　　　　　　　携帯電話機
１０１　　　　　　　　光源
１１０　　　　　　　　携帯電話機 DESCRIPTION OF SYMBOLS 1 Illuminated type key sheet 3 Light guide part 3a Light receiving part 3b Light guide shape 3ba Reflective surface 3bb Transmission surface 3c Upper side surface 5 of the lower surface of the light guide part Display part 5a, 5b Display element 7 Pusher sheet 7b Sheet-like member 7a Pusher Layer 7aa Pusher 7ab Thin portion 11 Illuminated key sheet 13 Light guide portion 13bb Transmission surface 15 Display portions 15a and 15c Display element 17 Pusher sheet 17aa Pusher 19 Key member 19a Key 19b Sheet-like member 19c Fixed layer 100 Mobile phone 101 Light source 110 Mobile phone

Claims (7)

  1. 　照光式キーシートにおいて、
    　表示要素を表示する表示部と、
    　前記表示部の上方に位置するとともに、受光部で受光した光を導光し、導光した光により前記表示要素を上側から照らす導光部と、
    　を備える照光式キーシート。     In illuminated key sheet,
    A display unit for displaying display elements;
    A light guide unit that is located above the display unit, guides light received by the light receiving unit, and illuminates the display element from above with the guided light; and
    Illuminated key sheet.
  2. 　請求項１記載の照光式キーシートにおいて、
    　前記導光部は、透明であり、導光形状を有する照光式キーシート。     The illuminated key sheet according to claim 1,
    The light guide unit is an illuminated key sheet that is transparent and has a light guide shape.
  3. 　請求項２記載の照光式キーシートにおいて、
    　前記導光部は、前記受光部から遠ざかるにつれて厚さが薄くなっている照光式キーシート。     The illuminated key sheet according to claim 2,
    The light guide part is an illuminated key sheet having a thickness that decreases as the distance from the light receiving part increases.
  4. 　請求項１記載の照光式キーシートにおいて、
    　前記表示部は、非透光性を有し、かつ、非自発光である照光式キーシート。     The illuminated key sheet according to claim 1,
    The display unit is an illuminated key sheet that has non-light-transmitting properties and is non-self-luminous.
  5. 　請求項１記載の照光式キーシートにおいて、
    　前記表示部の下方の位置に押し子をさらに備える照光式キーシート。     The illuminated key sheet according to claim 1,
    An illuminated key sheet further comprising a pusher at a position below the display unit.
  6. 　請求項１記載の照光式キーシートにおいて、
    　前記導光部の上方に位置する透光性を有するキー部材をさらに備え、
    　前記透光性を有するキー部材は、表面全面に固着層を設けたシート状部材と、前記固着層により前記シート状部材の表面に固着したキーと、を備える照光式キーシート。     The illuminated key sheet according to claim 1,
    Further comprising a translucent key member located above the light guide,
    The translucent key member is an illumination type key sheet comprising: a sheet-like member having a fixing layer provided on the entire surface thereof; and a key fixed to the surface of the sheet-like member by the fixing layer.
  7. 　請求項１記載の照光式キーシートにおいて、
    　前記表示部は、電子ペーパーである照光式キーシート。     The illuminated key sheet according to claim 1,
    The display unit is an illuminated key sheet that is electronic paper.
PCT/JP2009/063985 2008-08-13 2009-08-07 Illuminated key sheet WO2010018784A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-208757 2008-08-13
JP2008208757A JP2011222120A (en) 2008-08-13 2008-08-13 Illuminated key sheet

Publications (1)

Publication Number Publication Date
WO2010018784A1 true WO2010018784A1 (en) 2010-02-18

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ID=41668929

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Application Number Title Priority Date Filing Date
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WO (1) WO2010018784A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6027331B2 (en) * 2012-04-06 2016-11-16 ポリマテック・ジャパン株式会社 Light guide sheet and decorative molded body

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000215747A (en) * 1998-07-14 2000-08-04 Hitachi Ltd Liquid crystal display
JP2003252538A (en) * 2001-12-28 2003-09-10 Toshiba Corp Push button switch for elevator
JP2005285754A (en) * 2004-03-02 2005-10-13 Nec Corp Transmission type key sheet, input key switch using the same, and electronic equipment using input key switch
JP2005352987A (en) * 2004-06-14 2005-12-22 Mitsubishi Electric Corp Key input apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000215747A (en) * 1998-07-14 2000-08-04 Hitachi Ltd Liquid crystal display
JP2003252538A (en) * 2001-12-28 2003-09-10 Toshiba Corp Push button switch for elevator
JP2005285754A (en) * 2004-03-02 2005-10-13 Nec Corp Transmission type key sheet, input key switch using the same, and electronic equipment using input key switch
JP2005352987A (en) * 2004-06-14 2005-12-22 Mitsubishi Electric Corp Key input apparatus

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