CN201122536Y - Touch key structure and light guiding module - Google Patents
Touch key structure and light guiding module Download PDFInfo
- Publication number
- CN201122536Y CN201122536Y CNU2007201931294U CN200720193129U CN201122536Y CN 201122536 Y CN201122536 Y CN 201122536Y CN U2007201931294 U CNU2007201931294 U CN U2007201931294U CN 200720193129 U CN200720193129 U CN 200720193129U CN 201122536 Y CN201122536 Y CN 201122536Y
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- light guide
- touch key
- light
- sheet assembly
- guide sheet
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Abstract
The utility model relates to a touching press key structure with even conduction of light. The touching press key structure comprises a FPC component arranged on the engine casing and a light conducting sheet component arranged on the FPC component. The light conducting sheet component is composed of a reflecting sheet, a diffusing sheet, a light strengthening sheet and a light conducting plate. Through the light conducting sheet component, the touching press key of the mobile phone can glow with even lamplight, and the individual lighting of each press key can also be realized.
Description
Technical field
But the utility model relates to a kind of touch key-press structure of even light-guiding, specifically, relates to a kind of touch key-press structure that can realize even light-guiding at the touch key-press place of for example mobile phone.The utility model belongs to field of mechanical technique.
Background technology
Adopt touch key-press more and more in the mobile phones design now.Touch key-press is because its special version causes the difficult processing of printing opacity at button place.
The leaded light technology is the key technology of touch key-press, and present leaded light mode mainly contains following dual mode:
A kind of is to adopt light guiding film.The operation principle of this mode is that light guiding film is sticked on the casing, then FPC (Flexible Printed Circuit, flexible printed circuit board) is attached on this light guiding film.The light source of this leaded light mode is generally 1-4 LED lamp, by the light refraction principle, makes the button face send evenly soft light and also can obtain high brightness, carries out the dark space adjustment simultaneously when design.
The shortcoming of this mode is: at first, because the light-conductive rate not high (about about 10%) of light guiding film, so require the brightness ratio of LED lamp bigger; Secondly, owing to require the light-emitting area of light guiding film and lamp vertical, so if desired the FPC of touch key-press is sticked on the curved surface, the uniformity of light and brightness will be difficult to be guaranteed so; The 3rd, because light guiding film is very thin, so if realize different buttons is lighted separately then and can't be accomplished.
Another kind then is to adopt reflecting piece.Also there is the shortcoming of three aspects in this mode: the first, and the installing space of requirement is than higher; The second, can not realize that each button lights separately; The 3rd, can't realize for the button that the space is compact.
The utility model content
The purpose of this utility model is to solve the uneven problem of leaded light in the existing leaded light mode and can not realizes the problem that each button is lighted separately in existing touch key-press backlight, and a kind of touch key-press structure that can realize even light-guiding at mobile phone touch key-press place is provided.Even light-guiding also can be understood as the mobile phone touch key-press uniform light that can shed at this.Utilize the touch key-press structure of even light-guiding of the present utility model, can realize that also button lights separately.
In order to solve the problems of the technologies described above, the utility model proposes a kind of touch key-press structure that realizes even light-guiding, comprising: casing; The FPC assembly is bonded on the casing by double faced adhesive tape; And the light guide sheet assembly, bond together by double faced adhesive tape and FPC assembly.
Preferably, this light guide sheet assembly is made by transparent material, comprises reflector plate, diffusion sheet, brightening piece and light guide plate four parts.
In one embodiment, light guide sheet has homogeneous thickness.
In another embodiment, light guide sheet has wedge-type shape, and the thickness of close point-source of light one side is than the thin thickness of opposite side.
Preferably, be manufactured with the site in the bottom of light guide plate.In the place near point-source of light, the density of site is thin and diameter is little, and with the increase of distance between jet nit point and the point-source of light, it is close that the density of site becomes gradually, and it is big that diameter becomes gradually.
The material that this light guide plate is low by optical index, penetrability is high is made, and this material is preferably PMMA (high transparent optical classes and grades in school acryl).
This light guide sheet assembly is installed in the back side of touch key-press, so the observer is difficult to find out the shape of the light-detecting device of light guide sheet assembly back.Owing to the effect of light guide sheet assembly, by the point-source of light of end edge incident ray, refraction and reflection by this light guide sheet assembly are converted to the light uniform surface light source simultaneously, thereby can see uniform light in the button outside.
The utility model also provides a kind of light guide module, and this light guide module comprises: the LED lamp; Above-mentioned light guide sheet assembly; And insulating trip.
Preferably, insulating trip is arranged between the adjacent light guide sheet assembly.
Adopt light guide module of the present utility model, can realize lighting separately each button.
Description of drawings
Fig. 1 is the outline drawing of FPC;
Fig. 2 shows the FPC assembly;
Fig. 3 shows fore shell;
Fig. 4 shows the structural representation of light guide sheet assembly;
Fig. 5 shows the principle schematic that realizes the independent leaded light of each button.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.
The touch key-press structure of even light-guiding of the present utility model comprises fore shell 20, the FPC assembly 10 and the light guide sheet assembly 30 of (flexible PCB) 11 that have FPC.Fig. 1,2 shows the FPC assembly 10 that is affixed on the handset front case 20, and Fig. 3 shows the fore shell 20 of mobile phone, and Fig. 4 shows the schematic diagram of the utility model light guide sheet assembly 30.
FPC assembly 10 is bonded in by double faced adhesive tape on the fore shell 20 of mobile phone, and light guide sheet assembly 30 bonds together by double faced adhesive tape and FPC assembly 10 then.
As shown in Figure 4, this light guide sheet assembly is made up of reflector plate 31, diffusion sheet 32, brightening piece 33 and light guide plate 34 4 parts.
When touch key-press was triggered, LED lamp 40 was lighted, and such LED lamp 40 is point-source of lights.After light that this point-source of light sends enters light guide sheet assembly 30, carry out total reflection or diffusion scattering repeatedly in the above and below of light guide plate 34, when the total reflection of light below light guide plate 34 was damaged, light will be from light guide plate 34 inner ejaculations.
The thickness of light guide plate 34 can be uniformly, but in order to make distribution of light more even, can be wedge-type shape with the Thickness Design of light guide plate 34 also, makes the thin thickness of the thickness of close point-source of light one side than opposite side.
In order to guide the scattered reflection of light in light guide plate 34,, in the present embodiment, in the bottom design of light guide plate 34 and make site 341, and the density and the size of site are controlled so that point-source of light is converted to area source.The site can be salient point or concave point (protruding or recessed spot).For the density and the size of site 341, generally speaking, in place near point-source of light, the density of site is thin and diameter is little, and with the increase of distance between jet nit point and the light source, it is close that the density of site becomes gradually, diameter becomes greatly gradually, thereby light can be evenly distributed on the surface of light guide plate 34.The material that light guide plate 34 is low by optical index, penetrability is high is made, and is the best with PMMA (high transparent optical classes and grades in school acryl), also can use PC (Merlon) film, COC (light optical mode group) and PET film etc.
The effect of this light guide sheet assembly 30 is exactly will be by the point-source of light (LED) of end edge incident ray, and refraction and reflection by this light guide sheet assembly are converted to required area source.
In addition, in order to realize lighting each button separately, just can only make a part of zone that light source is arranged.One above-mentioned light guide sheet assembly 30 is set below each button, separates by insulating trip 50 between each light guide sheet assembly.
Fig. 5 shows the part of whole light guide module, is made up of three light guide sheet assemblies 30 and two insulating trips 50, with reference to Fig. 5, in a side of each light guide sheet assembly 30 a LED lamp 40 is set, and is provided with insulating trip 50 between the adjacent light guide sheet assembly 30.As mentioned above, the light of LED lamp 40 incidents is through converting evenly soft light to behind the light guide sheet assembly 30 of the present utility model, but because the effect of insulating trip 50, promptly can only realize that to light reflection can not realize refraction, so the light that sends when LED lamp 40 just can only reflect when arriving insulating trip 50, thereby insulating trip 50 can not lighted, thereby realizes that 40 on a LED lamp illuminates the light guide sheet assembly 30 of a correspondence, promptly realizes lighting separately each button.
Be preferred embodiment of the present utility model only below, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. a touch key-press structure is characterized in that, comprising:
Casing;
The FPC assembly is arranged on the described casing; And
The light guide sheet assembly is arranged on the described FPC assembly.
2. touch key-press structure according to claim 1 is characterized in that, described light guide sheet assembly is made by transparent material, comprises reflector plate, diffusion sheet, brightening piece and light guide plate four parts.
3. touch key-press structure according to claim 2 is characterized in that described light guide plate has homogeneous thickness.
4. touch key-press structure according to claim 2 is characterized in that, is provided with point-source of light in a side of described light guide sheet assembly, and described light guide plate has wedge-type shape, near the thickness of the described point-source of light one side thin thickness than opposite side.
5. according to claim 3 or 4 described touch key-press structures, it is characterized in that be manufactured with the site in the bottom of described light guide plate, each described site is salient point or concave point.
6. touch key-press structure according to claim 5 is characterized in that, along with the increase of distance between described site and the described point-source of light, it is close that the density of described site becomes gradually, and it is big that diameter becomes gradually.
7. touch key-press structure according to claim 2 is characterized in that described light guide sheet assembly is installed in the back side of described touch key-press.
8. touch key-press structure according to claim 1 is characterized in that, described FPC assembly is bonded on the described casing by double faced adhesive tape, and described light guide sheet assembly bonds together by double faced adhesive tape and described FPC assembly.
9. a light guide module is characterized in that, comprising:
The LED lamp;
According to the light guide sheet assembly in each described touch key-press structure among the claim 2-7; And
Insulating trip.
10. light guide module according to claim 9 is characterized in that, described insulating trip is arranged between the adjacent described light guide sheet assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201931294U CN201122536Y (en) | 2007-11-01 | 2007-11-01 | Touch key structure and light guiding module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201931294U CN201122536Y (en) | 2007-11-01 | 2007-11-01 | Touch key structure and light guiding module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201122536Y true CN201122536Y (en) | 2008-09-24 |
Family
ID=40009774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201931294U Expired - Lifetime CN201122536Y (en) | 2007-11-01 | 2007-11-01 | Touch key structure and light guiding module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201122536Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032497A (en) * | 2009-09-25 | 2011-04-27 | 天津天地伟业数码科技有限公司 | Backlight structure of touch key |
| CN102479635A (en) * | 2010-11-26 | 2012-05-30 | 比亚迪股份有限公司 | Keyboard, button assembly and button switch assembly |
| CN103402287A (en) * | 2013-07-22 | 2013-11-20 | 珠海市魅族科技有限公司 | Press key backlight brightness control method and handheld terminal |
| CN104158532A (en) * | 2014-07-25 | 2014-11-19 | 广东好帮手电子科技股份有限公司 | Touch key device for rear-view mirror glass of vehicle navigation |
| CN105530349A (en) * | 2016-01-08 | 2016-04-27 | 珠海格力电器股份有限公司 | Key light guide structure and mobile phone |
| CN106293292A (en) * | 2016-07-29 | 2017-01-04 | 武汉华星光电技术有限公司 | A kind of mobile device |
-
2007
- 2007-11-01 CN CNU2007201931294U patent/CN201122536Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032497A (en) * | 2009-09-25 | 2011-04-27 | 天津天地伟业数码科技有限公司 | Backlight structure of touch key |
| CN102479635A (en) * | 2010-11-26 | 2012-05-30 | 比亚迪股份有限公司 | Keyboard, button assembly and button switch assembly |
| CN103402287A (en) * | 2013-07-22 | 2013-11-20 | 珠海市魅族科技有限公司 | Press key backlight brightness control method and handheld terminal |
| CN103402287B (en) * | 2013-07-22 | 2016-08-10 | 魅族科技（中国）有限公司 | The control method of key-press backlight brightness and handheld terminal |
| CN104158532A (en) * | 2014-07-25 | 2014-11-19 | 广东好帮手电子科技股份有限公司 | Touch key device for rear-view mirror glass of vehicle navigation |
| CN105530349A (en) * | 2016-01-08 | 2016-04-27 | 珠海格力电器股份有限公司 | Key light guide structure and mobile phone |
| CN105530349B (en) * | 2016-01-08 | 2018-12-14 | 珠海格力电器股份有限公司 | key light guide structure and mobile phone |
| CN106293292A (en) * | 2016-07-29 | 2017-01-04 | 武汉华星光电技术有限公司 | A kind of mobile device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080924 |