CN201725701U

CN201725701U - Light storage button structure

Info

Publication number: CN201725701U
Application number: CN2010200041704U
Authority: CN
Inventors: 陈国隆
Original assignee: Ichia Technologies Inc
Current assignee: Ichia Technologies Inc
Priority date: 2010-01-20
Filing date: 2010-01-20
Publication date: 2011-01-26
Anticipated expiration: 2020-01-20

Abstract

The utility model discloses a hold light button structure, it includes a backlight module and a hold light key cap structure, and it includes a hold light material, can set up a hold light material layer in holding light key cap structure for example, or make hold at least a part of light key cap structure including holding light material, or make surperficial hardcoat including holding light material for under backlight module's light shines, can carry out the function of holding light. Therefore, in a dark place, even if the backlight module is turned off, the position of the key pattern can be seen, so that the power can be saved, and the service life of the battery can be prolonged.

Description

Hold the light press-key structure

Technical field

The utility model relates to a kind of press-key structure, particularly relates to a kind of light press-key structure that holds, by the irradiation press-key structure backlight module light and can self-luminous.

Background technology

Electronic product for example mobile phone (cell phone), personal digital aid (PDA) (personal digitalassistant PDA) waits and can be provided with key board usually.Key board on the market mainly can be divided into metal key-press keyboard and generally comparatively common plastic press key keyboard, the pattern of the numeral on the key board, symbol and English words etc. at present.Usually be provided with backlight below keyboard, for example the LED lamp for the illumination of button, uses when making things convenient for the user in the dark.But in order to save battery electric power, the function choosing-item that also provides key illumination to close automatically usually, the user is time of continuing of selection key illumination voluntarily.Illumination is opened of a specified duration more, and power consumption is just fast more.But the electric power that the consumer often looks forward to electronic product is lasting more good more.

The novel patent of TaiWan, China discloses a kind of light sensitive press key M271245 number, and as shown in Figure 1, the sensitization color layers 12 that it has key body 10 and is arranged at the key body bottom has patterns 14 such as a plurality of literal, symbol on the sensitization color layers.Thus, the luminous energy that sees through sensitization color layers 12 absorbs, and produces first kind of change color, and then during by another rayed, the change color of generation more than second kind or second kind, and then produce the visual effect of dual demonstration (Dual mode).It is characterized in that providing the visual appearance effect of the multiple change color of button appearances, stack, to solve the shortcoming that existing button can only have constant color or single changes colour.Therefore, sensitization color layers as can be known 12 is in order to colorific variation, is not in order to provide light to reach backlight function.

Yet, because electronic product continues the development of trend power saving, therefore for novelty can power saving press-key structure still have required.

The utility model content

A purpose of the present utility model is to provide a kind of light press-key structure that holds, and it has the light of holding function, and button can radiate and hold light, thereby can save electricity consumption after absorbing the light of backlight module.

For reaching above-mentioned purpose, the utility model provides a kind of light press-key structure that holds, and it comprises a printed circuit board (PCB); One metal clips is arranged at this printed circuit board (PCB) top; One convex body is positioned at the top of this metal clips; One backlight module is positioned at this printed circuit board (PCB) top, so that one first light to be provided; Reach one and hold light keycap structure, be positioned at above this backlight module and corresponding to this convex body, this holds light keycap structure and comprises a light-storing material, when this backlight module provides this first light, this light-storing material absorbs this first light and radiates one second light, and when this backlight module stopped to provide this first light, this light-storing material continued this second light of radiation.

Advantage of the present utility model is, it holds the light press-key structure except having backlight module, and make the parts (member, component, element or part) in the keycap of press-key structure have light-storing material, therefore after the backlight module powered-down stops light being provided, still can send and hold light a period of time, backlight as button.For example when mobile phone when incoming call at night, this light-storing material can absorb the light that light source (for example LED) penetrates, and finds out button pattern position place to reach the self-luminous effect, can know.Therefore can save electric power, increase the service time of device (for example mobile phone) battery charge after once, thereby can prolong the useful life of battery and light source.

Description of drawings

Fig. 1 is the button color schematic diagram of a prior art;

Fig. 2 is the schematic diagram that the light press-key structure is applied to a specific embodiment of a portable telephone device that holds of the present utility model;

Fig. 3 to Fig. 5 is respectively the schematic diagram that holds the light press-key structure according to several specific embodiments of the present utility model.

The main element symbol description

10 key bodies, 12 sensitization color layers

14 patterns, 20 portable telephone devices

22,40,60,80 hold light press-key structure 42 key cap layers

44 plasticity membrane, 46 light-storing material layers

48 printed layers, 50 elastomer layers

51 light shield layers, 52 convex bodys

54 backlight modules, 56 shell fragments

58 printed circuit board (PCB)s, 62 key shape layers

64 elastomer layers, 66 printed layers

68 elastomer layers, 70 light guide plate

72 convex bodys, 74 adhesion coatings

82 slim key shape layer 84 plastic cement basement membrane

86 elastomer layers, 88 printed layers

90 convex bodys

Embodiment

Comprise a light-storing material according to the light keycap structure of holding of holding the light press-key structure of the present utility model, for example can in the keycap structure, insert a light-storing material layer or make at least one parts that hold light keycap structure comprise light-storing material or make surperficial hard conating comprise light-storing material, make and under the irradiation of backlight module, can hold the function of light.Keycap structure and without particular limitation can be the keycap structure that plastic cement for example combines with rubber, the keycap structure of injection mo(u)lding, the keycap structure of UV Seterolithography, the keycap structure of lithographic printing formation.Light-storing material can be for example rare earth material, but be not limited thereto, can launch the material of light (for example fluorescence or phosphorescence etc.) behind other the irradiation, but its fusion in each parts raw material with form each parts can be own or fusion form stratiform thing or coating person in other materials (for example plastics or coating), all can be used in the utility model.Fig. 2 shows that the light press-key structure 22 that holds of the present utility model can be applicable in the portable telephone device 20.

Fig. 3 to Fig. 5 shows respectively according to three specific embodiments of the present utility model, but the utility model is not limited to these embodiment.Fig. 3 shows according to a specific embodiment of the present utility model.According to a specific embodiment of the present utility model hold light press-key structure 40, it holds light keycap structure and comprises a key cap layer 42, a plasticity membrane 44 and a light-storing material layer 46.Key cap layer 42 is the keycap shape, its material can be light-transmissive resin, can be for example Merlon (polycarbonate in one embodiment, PC), polyethylene terephthalate (Poly (ethylene terephthalate), PET) or acrylonitrile-styrene-butadiene copolymer (acrylonitrile butadiene styrene, ABS) the printing opacity blend that blendes together of resin and various kinds of resin, for example: by the transparent ABS resin of ABS resin and polymethacrylates (polymethylmethacrylate is called for short PMMA) mixing.In this article, the meaning of " printing opacity " includes printing opacity and semi-transparent, and the material of transparent or hollow out or parts all have light transmission.There is no particular restriction for its color.Plasticity membrane 44 coats the upper surface of key cap layers 42, and it can be the film body of the plastic character of tool such as PC film for example.Light-storing material layer 46 is between key cap layer 42 and plasticity membrane 44.Light-storing material layer 46 is mixed by a light-storing material and plastics or coating, for example with rare earth material and PC material mixing; Perhaps can comprise a binder materials according to circumstances and simultaneously as adhesion coating.Between plasticity membrane 44 and key cap layer 42, one printed layers 48 can be set according to circumstances, so that button background color or patterns such as literal, symbol to be provided, in this specific embodiment, printed layers 48 is to be arranged between light-storing material layer 46 and the key cap layer 42, but be not limited thereto, for example, printed layers 48 also can be arranged between light-storing material layer 46 and the plasticity membrane 44.Can in keycap structure below one elastomer layer 50 be set according to circumstances in addition, its material can be for example rubber, so that elasticity to be provided.In this specific embodiment, an elastomer layer 50 and a convex body 52 are one-body molded and form.

Backlight module 54 is positioned at elastomer layer 50 belows so that light to be provided.Key cap layer 42, plasticity membrane 44 and the printed layers 48 that is provided with according to circumstances have light transmission, when the power supply opening of backlight module 54 so that light to be provided, light-storing material layer 46 absorbs light, and light is held in radiation, and at backlight module 54 power-offs when stopping light being provided, light-storing material layer 46 holds light a period of time because of there being the function of holding light can continue radiation, therefore, light-storing material layer 46 radiation hold light, can be as press-key structure backlight, so do not consuming in addition under the situation of electric power, can prolong the button pattern visible during, and have power saving effect.

Because holding light keycap structural entity has light transmission, therefore, a light shield layer 51 can further be set at the upper surface of elastomer layer 50, it covers the light from backlight module 54, but exposes the keycap part, so light is only partly penetrated to external environment by keycap.Below elastomer layer 50 and convex body 52, corresponding to the position of convex body 52 shell fragment 56 is set in addition, it can be metal or conductive plastic material, is provided with printed circuit board (PCB) 58 below shell fragment 56, is preferably flexible printed wiring board.For example can utilizing, shell fragment film (dome sheet) is fixed in shell fragment 56 on the printed circuit board (PCB) 58.

The light-storing material layer 46 of above-mentioned specific embodiment is between key cap layer 42 and plasticity membrane 44, yet, also can make light-storing material layer 46 be positioned at the below of key cap layer 42 according to circumstances.Perhaps, also light-storing material layer 46 can be coated on the upper surface of plasticity membrane 44 with coating way.

Moreover, also light-storing material layer 46 can be set in addition, but make at least one parts that hold light keycap structure comprise light-storing material.For example, blending light-storing material in the raw material of key cap layer 42 or plasticity membrane 44, and after forming key cap layer 42 or plasticity membrane 44, can include this light-storing material.The amount of the light-storing material of blending according to the parts material of this keycap structure, requiredly hold situation such as luminous intensity and decide.

Fig. 4 shows according to another specific embodiment of the present utility model.The keycap structure of holding light press-key structure 60 comprises a key shape layer 62, and an elastomer layer 64, and it is positioned at key shape layer 62 below, and the two all has light transmission, and the material of key shape layer 62 can be for example PC or ABS, and the material of elastomer layer 64 can be for example TPU.The two for example can utilize, and co-molded (co-mold) technology makes and the person of interosculating.Can be with the raw material blending light-storing material (for example rare earth material) of key shape layer 62 or elastomer layer 64 and make, make key shape layer 62 or elastomer layer 64 comprise light-storing material.

At elastomer layer 64 lower surfaces one printed layers 66 can be set in addition, with the display button pattern.Printed layers 66 preferable light-permeables absorb light in order to light-storing material.One elastomer layer 68 can be set in addition in printed layers 66 belows, and it for example can be the rubber material so that elasticity to be provided.Light guide plate 70 is positioned at elastomer layer 68 belows, and a light source (not shown) is positioned at light guide plate 70 other or belows, forms backlight module so that light to be provided.One light shield layer 51 can further be set covering light at the upper surface of elastomer layer 68, but expose the keycap part from backlight module.Below light guide plate 70, a convex body 72 is set corresponding to key position, and below convex body 72, is provided with a shell fragment 56, below shell fragment 56, be provided with printed circuit board (PCB) 58.Can utilize shell fragment film (not shown) that shell fragment 56 is fixed on the printed circuit board (PCB) 58 in addition.Can utilize adhesion coating 74 that the light guide plate 70 on elastomer layer 68 and the layer printed circuit board 58 is adhered together in addition as shown in Figure 4.

In this specific embodiment, be make key shape layer 62 and elastomer layer 64 any one or the two comprise and hold light property to give by light-storing material.Yet, also can form according to circumstances and be located between key shape layer 62 and the elastomer layer 64 or the below of elastomer layer 64 just like above-mentioned light-storing material layer.Perhaps, also the light-storing material layer can be coated on the upper surface of key shape layer 62 with coating way.

Fig. 5 shows according to another specific embodiment again of the present utility model.The light keycap structure of holding of holding light press-key structure 80 comprises a slim key shape layer 82, a plastic cement basement membrane 84 and an elastomer layer 86, the two all has light transmission, slim key shape layer 82 be by a ultraviolet curing resin is put on the plastic cement basement membrane 84 and via irradiation ultraviolet radiation solidify form.Plastic cement basement membrane 84 can be for example material of PET.Can be with the raw material blending light-storing material of slim key shape layer 82 or plastic cement basement membrane 84 and make, make slim key shape layer 82 or plastic cement basement membrane 84 comprise light-storing material.At plastic cement basement membrane 84 lower surfaces one printed layers 88 can be set according to circumstances, with the display button pattern.One elastomer layer 86 is set below printed layers 88, and it for example can be the rubber material so that elasticity to be provided.Can be with the raw material blending light-storing material of slim key shape layer 82, plastic cement basement membrane 84 or elastomer layer 86 and make, make slim key shape layer 82, plastic cement basement membrane 84 or elastomer layer 86 comprise light-storing material.

One convex body 90, it can be one-body molded with elastomer layer 86.Below convex body 90, be provided with a shell fragment 56, below shell fragment 56, be provided with printed circuit board (PCB) 58.Can utilize shell fragment film (not shown) that shell fragment 56 is fixed on the printed circuit board (PCB) 58 in addition.Light source 54 is arranged on the printed circuit board (PCB) 58.

In this specific embodiment, comprise light-storing material more than can making at least one of slim key shape layer 82, plastic cement basement membrane 84 and elastomer layer 86, hold light property to give.Yet, also can form according to circumstances and be located between plastic cement basement membrane 84 and the elastomer layer 86 or the below of elastomer layer 86 just like above-mentioned light-storing material layer 46.Perhaps, also the light-storing material layer can be coated on the upper surface of slim key shape layer 82 with coating way.

In another specific embodiment, can make the light keycap structure of holding wherein comprise one, and make key shape layer comprise light-storing material, and have the light of holding function by the formed key shape of imprint lithography layer.

The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims

1. A light-storing button structure, characterized in that it comprises: a printed circuit board; a metal shrapnel, arranged above the printed circuit board; a convex body, positioned above the metal shrapnel; a backlight module, positioned above the printed circuit board, with providing a first light; and a light-storage keycap structure located above the backlight module and corresponding to the protrusion, the light-storage keycap structure includes a light-storage material, and when the backlight module provides the first light, the light-storage material absorbs the first light A light and a second light are emitted, and when the backlight module stops providing the first light, the light storage material continues to emit the second light.

2. The light storage key structure according to claim 1, wherein the backlight module comprises: a light guide plate located between the light storage keycap structure and the convex body; and a light source located beside or below the light guide plate to emit the first light to the light guide plate, and provide the first light through the light guide plate.

3. The light-storage key structure according to claim 1, characterized in that, the light-storage keycap structure comprises: a keycap layer, which has light transmittance; a plastic film, which has light transmittance and covers the keycap layer. an upper surface; and a light storage material layer located between the keycap layer and the plastic film, or below the keycap layer, wherein the light storage material layer includes the light storage material.

4. The light storage key structure according to claim 3, wherein the light storage material layer further comprises an adhesive material as an adhesive layer.

5. The light storage key structure according to claim 3, wherein the light storage keycap structure further comprises a printing layer, which is located between the keycap layer and the light storage material layer or between the light storage material layer and the plastic film .

6. The light-storage key structure according to claim 1, characterized in that, the light-storage keycap structure comprises: a keycap layer, which has light transmission; and a plastic film, which has light transmission and covers the keycap layer The upper surface of the keycap layer or the plastic film includes the light storage material.

7 . The light-storage key structure according to claim 6 , wherein the light-storage keycap structure further comprises a printing layer, which has light transmission and is located between the keycap layer and the plastic film.

8. The light storage key structure according to claim 1, characterized in that, the light storage keycap structure comprises: a key-shaped layer, which has light transmission; and an elastomer layer, which has light transmission and is located on the key-shaped layer Below, wherein the key-shape layer or the elastic body includes the light storage material.

9. The light-storage key structure according to claim 8, wherein the key-shape layer and the elastomer layer are manufactured by a co-molding process and combined with each other.

10 . The light storage key structure according to claim 8 , wherein the light storage keycap structure further comprises a printing layer, which has light transmission and is located under the elastomer layer. 11 .

11. The light-storage key structure according to claim 1, characterized in that, the light-storage keycap structure comprises: a key-shaped layer, which has light transmission; an elastomer layer, which has light-transmittance and is located under the key-shaped layer ; and a light storage material layer, which is located between the key-shaped layer and the elastomer or below the elastomer layer, and the light storage material layer includes the light storage material.

12. The light storage key structure according to claim 11, wherein the light storage material layer further comprises an adhesive material as an adhesive layer.

13. The light-storage key structure according to claim 11, wherein the key-shape layer and the elastomer layer are manufactured by a co-molding process and combined with each other.

14. The light-storage key structure according to claim 11, wherein the light-storage keycap structure further comprises a printing layer, which is transparent and located under the elastomer layer.

15. The light-storage button structure according to claim 1, characterized in that, the light-storage keycap structure comprises: a thin key-shaped layer, which has light transmittance; a plastic base film, which has light-transmittance, wherein the thin key-shaped a layer formed by applying an ultraviolet curable resin on the plastic base film and curing by irradiating ultraviolet rays; and an elastomer layer, which has light transmission, located under the plastic base film, wherein the thin key layer , at least one of the plastic base film and the elastomer layer includes the light storage material.

16. The light-storage key structure according to claim 15, wherein the light-storage keycap structure further comprises a printing layer, which has light transmission and is located between the plastic base film and the elastomer layer.

17. The light-storage button structure according to claim 1, characterized in that, the light-storage keycap structure comprises: a thin key-shaped layer, which has light transmittance; a plastic base film, which has light-transmittance, wherein the thin key-shaped layer A layer is formed by applying an ultraviolet curable resin on the plastic base film and curing it by irradiating ultraviolet rays; an elastomer layer, which has light transmission, and is located under the plastic base film; and a light storage material layer, which is located on the plastic base film. Between the plastic base film and the elastic body layer, or under the elastic body layer, the light storage material layer includes the light storage material.

18. The light-storage key structure according to claim 17, wherein the light-storage keycap structure further comprises a printing layer, which has light transmission and is located between the plastic base film and the elastomer layer.

19. The light storage key structure according to claim 17, wherein the light storage material layer further comprises an adhesive material as an adhesive layer.

20. The light-storage key structure according to claim 1, wherein the light-storage keycap structure comprises a surface coating, and the surface coating comprises the light-storage material.

21. The light-storage key structure according to claim 1, wherein the light-storage keycap structure comprises a key-shaped layer formed by a lithography process, and the key-shaped layer includes the light-storage material.