CN102110540B - Thin-film press key and manufacturing method thereof - Google Patents
Thin-film press key and manufacturing method thereof Download PDFInfo
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- CN102110540B CN102110540B CN 200910312112 CN200910312112A CN102110540B CN 102110540 B CN102110540 B CN 102110540B CN 200910312112 CN200910312112 CN 200910312112 CN 200910312112 A CN200910312112 A CN 200910312112A CN 102110540 B CN102110540 B CN 102110540B
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Abstract
The invention relates to a thin-film press key and a manufacturing method thereof. The thin-film press key comprises a dome-shaped resilient metal sheet, a light guide thin-film layer and a protective layer, wherein the bulging side of the dome is defined as the outer side; the light guide thin-film layer is arranged at the outer side of the resilient metal sheet; the protective layer is made of colloidal silica and is arranged at the outer side of the light guide thin-film layer; and the dome-shaped resilient metal sheet, the light guide thin-film layer and the protective layer are machined to form an integrated structure which is installed on a circuit board. By using the integrated press key structure subjected to vertical integration, the operating parts of the thin-film press key are integrated, thereby thinning the overall structure, optimizing the design process, and effectively avoiding the poor tactile sensation of each operating part caused by deviation in the assembling process. Besides, by integrating the light guide thin-film technology, the optical simulation analysis can be finished in the thin-film press key design process, thereby shortening the design cycle.
Description
[technical field]
The present invention relates to a kind of film key and manufacture method thereof, refer in particular to a kind of film key and manufacture method thereof of thin typeization
[background technology]
Along with the continuous development and progress of science and technology, increasing electronic product such as mobile phone, notebook computer, game machine, MP3 is come into people's life and has been obtained popularizing widely.After the basic function of these products was tending towards homogeneity, appearance design then became the importance that the consumer selects commodity, and for this reason, each producer also all exhausts one's ability, and caters to his tastes.Thin typeization has characteristics such as portable and brief concurrently with its deft design the time, becomes important designer trends in the product appearance.Yet thin typeization is not simply product design to be dwindled on the traditional sense, but has merged the compactedness design that interior fittings does not influence its function.
See also the novel patent announcement of TaiWan, China M296427 number, especially consult graphic first figure, this patent has disclosed a kind of for the press-key structure on the mobile phone, comprises that a circuit board reaches metal clips layer, light guide plate, light shield layer and the key layer that is superimposed on successively on the circuit board.Described metal clips layer is provided with some dome shapes moved end, and can be when pressurized corresponding circuit on the turning circuit plate; Light guide plate is scattered total keyboard region by the light-emitting component of side setting with light; Light shield layer then is with corresponding key part hollowed-out translucent, blocks the bright line of all the other non-button parts; Appearance is key layer, presses and actuate indirectly related circuit on the circuit board for the staff direct control, realizes keypress function.
Yet this button in the time of the manufacturing complexity of each individual layer, has brought puzzlement also for virtually button and even the design of final products thin type owing to have sandwich construction design.
Given this, be necessary to provide a kind of improved film key in fact, to overcome above-mentioned defective.
[summary of the invention]
The object of the present invention is to provide a kind of film key, refer to a kind of film key and manufacture method thereof that satisfies the thin type needs especially.
For achieving the above object, the invention provides a kind of film key, can be mounted to circuit board, it comprises: dome shape metal clips, and described dome projection one side is defined as the outside; The light-leading film layer is disposed at the metal clips outside; Protective layer, material are colloidal silica and are disposed at the light-leading film layer outside; Described dome shape metal clips, light-leading film layer and protective layer are processed to form integral structure and are mounted to circuit board.
The present invention also provides a kind of method of making described film key, and it comprises the steps: one, prepares dome shape metal clips, and described metal clips dome projection one side is defined as the outside; Two, prepare light-leading film, and light-leading film is covered on the dome shape metal clips outside, form the light-leading film layer; Three, prepared silicon colloid, and colloidal silica is coated on the light-leading film outside forms protective layer.
Compared to prior art, the integral structure that film key of the present invention adopts has been eliminated the thick and complicated puzzlement of multilayer design in the past, especially the metal clips with the dome shape joins in the integral type film key, all starts of film key are partially integrated into together, when reaching thin typeization, also effectively avoided respectively making the reason off normal and the bad phenomenon of sense of touch that causes.
[description of drawings]
Fig. 1 is mounted to schematic diagram behind the circuit board for film key of the present invention;
Schematic diagram when Fig. 2 is each layer of film key of the present invention and circuit board separation;
Fig. 3 is the schematic diagram of a kind of button product of use film key manufacturing of the present invention;
Fig. 4 is light when film key of the present invention transmits at schematic diagram;
Schematic diagram when Fig. 5 is each layer of second embodiment of the invention film key and circuit board separation.
[embodiment]
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
See also Fig. 1 and Fig. 2, the invention provides a kind of film key 100, can be mounted to the circuit board 200 of being furnished with the respective keys circuit, and utilize film key 100 to realize conducting and the partition of circuit, to reach corresponding command function, this film key 100 comprises: dome shape metal clips 1, as moved end of film key 100; Be positioned at the light-leading film layer 3 in the dome shape metal clips 1 projection outside; Use colloidal silica to make and place the protective layer 5 in light-leading film layer 3 outside.Described dome shape metal clips 1, light-leading film layer 3 and protective layer 5 are processed to form integral structure, are mounted to circuit board 200 more in the lump.These film key 100 structures are integrated into one with each button lamination, when effectively realizing the button thin typeization, the technology of light-leading film layer 3 also is incorporated into the inside, make and when film key 100 designs, just can finish the optics simulation analysis, thereby will be originally to isolating construction carry out optical analysis with the process optimization of testing film button 100 whole leaded light performances to carrying out together, intensive design cycle.In addition, the present invention is partially integrated into together all starts of film key 100 design that dome shape metal clips 1 joins in the integral type film key 100, off normal when also effectively having avoided respectively doing the reason assembling and the bad phenomenon of sense of touch that causes.
See also Fig. 2, can adhere to by attraction each other between described dome shape metal clips 1 and the light-leading film layer 3, also can be by glue-line 2 auxiliary adhesions, glue-line 2 in the present embodiment adopts layers of two-sided to realize, the periphery of described layers of two-sided is greater than the periphery of metal clips 1, can film key 100 be remained in circuit board 200 in that film key 100 integral installations are auxiliary during to circuit board 200.
Please continue to consult Fig. 2, and especially pay close attention to its silica gel protected layer 5, described protective layer 5 outer surfaces are arranged to comprise the frosted shape side face 52 that is positioned at the press surface 51 dome center and that have smooth flat and is made of some salient points.The purpose of this design is to make press surface 51 can have higher light transmittance press surface 51 side face 52 in addition then to be arranged to have the structure of higher reflectivity, and the realization meeting of concrete function is illustrated in conjunction with other accompanying drawings in next section.
See also Fig. 3, be depicted as a button product 300 that utilizes film key 100 of the present invention to make, be provided with light emitting source 400 and be passed to whole button product 300 by light-leading film layer 3 in a side of button product 300.Please consult Fig. 4 simultaneously, Fig. 4 brief description through the transmittance process of light 410 in film key 100 that light emitting source 400 sends.Light 410 owing to have higher reflectivity, makes light 410 change directions and continues along light-leading film layer 3 to realize stopping light 410 when send unnecessary position to front transfer by frosted shape side face 52 time, also reduced the loss of light 410; On the contrary, 51 of press surfaces when light 410 is delivered to herein, then can outwards be dispersed by press surface 51, and then reach the effect of brightening because being arranged to have the smooth flat of higher light transmittance.
See also Fig. 2, introduce the manufacture method of first embodiment of the invention film key 100 below in conjunction with the concrete structure of film key 100, it comprises the steps: at first, prepares dome shape metal clips 1, and described metal clips 1 dome projection one side is defined as the outside; Then, glue-line 2 (glue or double faced adhesive tape) is overlying on metal clips 1 outside; Then, prepare light-leading film, and light-leading film is covered on dome shape metal clips 1 outside, form light-leading film layer 3; Prepared silicon colloid more afterwards, and colloidal silica is coated on light-leading film layer 3 outside forms protective layer 5.From the manufacture method of above-mentioned film key 100, be not difficult to find out the vertical integration effect of each stepped construction of button, and the assurance of the simplification of design process and button sense of touch.
Equally, corresponding with film key 100 described structures, described glue-line 2 is overlying on step between dome shape metal clips 1 and the light-leading film layer 3, can rely on attraction mutual between layer and the layer to adhere to equally, thereby can select to use, it is not the step of being strict with, glue-line 2 preferable employing layers of two-sided in the present embodiment in the film key 100, the periphery of layers of two-sided can be designed to the form greater than metal clips 1 periphery during manufacturing, with auxiliary film key 100 be remained in circuit board 200.
Please continue to consult Fig. 2, and especially pay close attention to its silica gel protected layer 5, described silica gel protected layer 5 has the frosted shape side face 52 that is positioned at the press surface 51 dome center and that have smooth flat and is made of some salient points.This press surface 51 and side face 52 forming in advance also are mounted on the light-leading film layer 3, also can be when colloidal silica be covered on light-leading film layer 3, and pressing forms.
See also Fig. 5 and in conjunction with Fig. 2; the difference of the manufacture method of the described second embodiment film key 100 ' and last embodiment manufacture method is, the manufacture method of film key 100 ' also further is provided with behind the protective layer 5 ' of packing into and pastes one deck and protective layer 5 ' light shield layer 7 ' independently mutually.Certainly, the light shield layer 7 ' of the protective layer 5 of last embodiment film key 100 and the second embodiment film key 100 ' self and the outside thereof also can further be pasted with decorative layer steps such as (not shown).
In sum, it below only is preferred embodiment of the present invention, should not limit the scope of the invention with this, namely every simple equivalent of doing according to claims of the present invention and description of the invention content changes and modifies, and all should still belong in the scope that patent of the present invention contains.
Claims (6)
1. a film key can be mounted to circuit board, comprising:
Dome shape metal clips, described dome projection one side is defined as the outside;
The light-leading film layer is disposed at the metal clips outside;
Protective layer, material are colloidal silica and are disposed at the light-leading film layer outside;
It is characterized in that: described dome shape metal clips, light-leading film layer and protective layer are processed to form integral structure, and described protective layer outer surface comprises the high printing opacity press surface of the smooth flat that is positioned at the dome center and is positioned at the height reflection side face of press surface frosted shape all around.
2. film key as claimed in claim 1, it is characterized in that: described film key also comprises the glue-line between dome shape metal clips and light-leading film layer.
3. film key as claimed in claim 2, it is characterized in that: described glue-line is layers of two-sided, and the periphery of layers of two-sided is greater than the periphery of metal clips.
4. the manufacture method of film key according to claim 1, it comprises the steps:
One, prepare dome shape metal clips, described metal clips dome projection one side is defined as the outside;
Two, prepare light-leading film, and light-leading film is covered on the dome shape metal clips outside, form the light-leading film layer;
Three, prepared silicon colloid, and colloidal silica is coated on the light-leading film outside forms protective layer, described protective layer outer surface comprise the high printing opacity press surface of the smooth flat that is positioned at the dome center and are positioned at the height reflection side face of the frosted shape around the press surface.
5. film key manufacture method as claimed in claim 4 is characterized in that: described manufacture method also is included in the step of preparing glue-line before the step 2 and glue-line being overlying on the metal clips outside.
6. film key manufacture method as claimed in claim 5, it is characterized in that: described glue-line is layers of two-sided, and the periphery of layers of two-sided is greater than the periphery of metal clips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312112 CN102110540B (en) | 2009-12-24 | 2009-12-24 | Thin-film press key and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312112 CN102110540B (en) | 2009-12-24 | 2009-12-24 | Thin-film press key and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102110540A CN102110540A (en) | 2011-06-29 |
| CN102110540B true CN102110540B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910312112 Expired - Fee Related CN102110540B (en) | 2009-12-24 | 2009-12-24 | Thin-film press key and manufacturing method thereof |
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| CN (1) | CN102110540B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101153993B1 (en) * | 2011-08-09 | 2012-06-11 | 주식회사 두성테크 | Taping method for dome-sheet |
| CN103780239B (en) * | 2012-10-25 | 2018-04-13 | 贝骨新材料科技（上海）有限公司 | Piezo-electric electret thin film button |
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2009
- 2009-12-24 CN CN 200910312112 patent/CN102110540B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102110540A (en) | 2011-06-29 |
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Granted publication date: 20130710 Termination date: 20191224 |