CN220710165U - Film switch with multicolor LED application - Google Patents
Film switch with multicolor LED application Download PDFInfo
- Publication number
- CN220710165U CN220710165U CN202322238878.6U CN202322238878U CN220710165U CN 220710165 U CN220710165 U CN 220710165U CN 202322238878 U CN202322238878 U CN 202322238878U CN 220710165 U CN220710165 U CN 220710165U
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- Prior art keywords
- layer
- light guide
- area
- light
- film switch
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- 239000010410 layer Substances 0.000 claims abstract description 80
- 239000012790 adhesive layer Substances 0.000 claims abstract description 26
- 230000008719 thickening Effects 0.000 claims abstract description 24
- 239000010409 thin film Substances 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 2
- 229920000297 Rayon Polymers 0.000 claims 2
- 239000012634 fragment Substances 0.000 claims 2
- 230000004308 accommodation Effects 0.000 abstract description 6
- 239000012528 membrane Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000012780 transparent material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Abstract
The thin film switch with the multicolor LED application comprises a panel layer, a thickening layer, a first adhesive layer, a circuit layer and a back adhesive layer which are sequentially arranged from top to bottom, wherein a plurality of keys are arranged on the panel layer, a plurality of elastic sheets are arranged on the first adhesive layer, and each elastic sheet corresponds to one key; the thickening layer is provided with a plurality of containing holes which are in one-to-one correspondence with the plurality of keys, the containing holes comprise a first containing area which is positioned right below the keys and a second containing area which is far away from right below the keys, and the second containing area is communicated with the first containing area; a light guide plate positioned between the key and the elastic sheet is positioned and installed in each first accommodating area; the circuit layer is provided with an LED light source which stretches into the second accommodating area and transmits light sources to the light guide plate. The first accommodation area is utilized to position and install the light guide sheet, so that the light guide sheet can not move into the second accommodation area to interfere with the LED light source by limiting, the damage probability of the LED light source by the light guide sheet is effectively reduced, and the service life of the LED light source is ensured.
Description
Technical Field
The utility model relates to the technical field of film switches, in particular to a film switch with a multicolor LED application.
Background
The membrane switch is an operating system integrating key functions, indicating elements and instrument panels and is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like. In order to facilitate the operation of the membrane switch by a user, a plurality of LED light sources are usually arranged on the membrane switch, and the LED light sources are in one-to-one correspondence with each key on the membrane switch.
Referring to the chinese patent of patent No. cn202223462574.X, the existing membrane switch generally adopts a light guide sheet (membrane) to uniformly disperse the light emitted by the LED light source, so as to achieve the purpose of uniformly illuminating the whole key, however, the existing light guide sheet and the LED light source are generally disposed in the same hole, and the LED light source of the light guide sheet is damaged due to pressing during long-term use.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides a thin film switch with a multicolor LED application.
The technical scheme adopted for solving the technical problems is as follows:
the thin film switch with the multicolor LED application comprises a panel layer, a thickening layer, a first adhesive layer, a circuit layer and a back adhesive layer which are sequentially arranged from top to bottom, wherein a plurality of keys are arranged on the panel layer, a plurality of elastic pieces for sending control signals by a key driving trigger circuit layer are arranged on the first adhesive layer, and each elastic piece corresponds to one key; the method is characterized in that: the thickening layer is provided with a plurality of containing holes which are in one-to-one correspondence with the plurality of keys, the containing holes comprise a first containing area which is positioned right below the keys and a second containing area which is far away from right below the keys, and the second containing area is communicated with the first containing area; a light guide plate positioned between the key and the elastic sheet is positioned and installed in each first accommodating area; the circuit layer is provided with an LED light source which stretches into the second accommodating area and transmits light sources to the light guide plate.
In the utility model, the second accommodation area has a smaller plan view area than the first accommodation area.
In the utility model, the top-view cross-sectional shape of the first accommodating area is the same as the top-view cross-sectional shape of the light guide sheet, and the light guide sheet is installed in the first accommodating area in a matching way.
In the utility model, the thickening layer comprises a first isolation layer and a filling layer which are sequentially arranged from top to bottom, and the accommodating hole penetrates through the first isolation layer and the filling layer from top to bottom.
In the utility model, the first isolation layer comprises a main isolation layer, a second adhesive layer arranged on the top surface of the main isolation layer and a third adhesive layer arranged on the bottom surface of the main isolation layer, wherein the second adhesive layer enables the panel layer and the main isolation layer to be fixed together in an adhesive manner, and the third adhesive layer enables the main isolation layer and the filling layer to be fixed together in an adhesive manner.
In the utility model, the back of the circuit layer is provided with a back adhesive layer.
In the utility model, the top or bottom of the light guide sheet is provided with a thickening convex block, the thickening convex block is positioned at the bottom or the middle position of the top of the light guide sheet, and the thickening convex block is positioned at the middle position above the elastic sheet.
In the utility model, the light guide sheet comprises a light guide body and an extended light inlet part connected to the outer side of the light guide body, wherein the extended light inlet part extends over the right lower part of the key and the right upper part of the elastic sheet, and the extended light inlet part corresponds to the light emitting end of the LED light source.
In the utility model, two extended light-in parts of each light guide sheet are symmetrically arranged at two opposite ends of the light guide body, and one of the extended light-in parts of each light guide sheet corresponds to the light-emitting end of the LED light source.
In the utility model, the key is positioned at the center position above the light guide body, and the overlooking area of the light guide body is larger than that of the key.
The utility model has the beneficial effects that:
1. according to the LED light source, the first accommodating area is utilized for positioning and mounting the light guide sheet, so that the light guide sheet is limited and cannot move into the second accommodating area to interfere with the LED light source, the probability that the LED light source is damaged by the light guide sheet is effectively reduced, and the service life of the LED light source is ensured;
2. the LED light source is positioned in the second accommodating area, so that the LED light source is protected by the thickening layer, and meanwhile, the second accommodating area is arranged far away from the right lower part of the key, so that the probability that a user presses the LED light source when installing the key is greatly reduced, and the service life of the LED light source is further ensured;
3. the side light source emitted by the LED light source is converted into a surface light source and emits light uniformly, so that the key can show the overall luminous effect.
Drawings
The utility model is further described below with reference to the drawings and embodiments:
FIG. 1 is an exploded view of the present embodiment;
FIG. 2 is a top view of a light guide sheet;
FIG. 3 is a schematic view of a light guide sheet in a mounting receptacle;
fig. 4 is a side schematic view of the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1-4, a film switch with a multicolor LED application comprises a panel layer 1, a thickening layer, a first adhesive layer 2 and a circuit layer 3 which are sequentially arranged from top to bottom, wherein a plurality of keys 101 are arranged on the panel layer 1, a plurality of shrapnel 4 which are driven by the keys 101 to trigger the circuit layer 3 to send out a control signal are arranged on the first adhesive layer 2, a first avoiding hole for avoiding the shrapnel 4 is arranged on the first adhesive layer 2, and each shrapnel 4 corresponds to one key 101. The spring 4 is a common button spring nest piece in the market, and the button 101 drives the spring 4 to trigger the circuit layer 3 to send a control signal according to the conventional technology, so the specific description is omitted.
Further, the thickening layer is provided with a plurality of accommodating holes corresponding to the plurality of keys 101 one by one, the accommodating holes comprise a first accommodating area 100 located right below the keys 101 and a second accommodating area 200 far away from right below the keys 101, the overlooking area of the second accommodating area 200 is smaller than that of the first accommodating area 100, and the second accommodating area 200 is located outside the first accommodating area 100 and is communicated with the first accommodating area 100; a light guide piece 5 positioned between the key 101 and the elastic sheet 4 is positioned and installed in each first accommodating area 100, the overlooking section shape of the first accommodating area 100 is the same as the overlooking section shape of the light guide piece 5, the light guide piece 5 adopts an LGF light guide piece, and the light guide piece 5 is installed in the first accommodating area 100 in a matching way;
still further, the circuit layer 3 is provided with an LED light source 6 that extends into the second accommodating area 200 to deliver a light source to the light guide sheet 5, and the LED light source 6 extends into one of the second accommodating areas 200 of the accommodating holes, so that the LED light source 6 can inject the light source into the light guide sheet 5.
The first accommodating area 100 is utilized to position and mount the light guide sheet 5, so that the light guide sheet 5 is limited and cannot move into the second accommodating area 200 to interfere with the LED light source 6, and the probability that the LED light source 6 is damaged by the light guide sheet 5 is effectively reduced; and the side light source emitted by the LED light source 6 is converted into a surface light source and emits light uniformly, so that the key 101 can exhibit an overall light emitting effect. In addition, the LED light source 6 adopts a color LED capable of emitting red light, yellow light, green light, blue light and white light, so that the key 101 is lighted with color light, and the display effect is improved.
As a preferred embodiment, the thickening layer comprises a first isolation layer 7 and a filling layer 8 which are sequentially arranged from top to bottom, and the accommodating hole penetrates through the first isolation layer 7 and the filling layer 8 from top to bottom. Further, the first isolation layer 7 includes a main isolation layer 71, a second adhesive layer 72 disposed on the top surface of the main isolation layer 71, and a third adhesive layer 73 disposed on the bottom surface of the main isolation layer 71, where the second adhesive layer 72 makes the panel layer 1 and the main isolation layer 71 adhere and fix together, and the third adhesive layer 73 makes the main isolation layer 71 and the filling layer 8 adhere and fix together.
As a preferred embodiment, a back adhesive layer 9 is arranged on the back surface of the circuit layer 3, the back adhesive layer 9 is double-sided adhesive, and the back adhesive layer 9 is used for adhering the membrane switch to a shell of an electric appliance.
As a preferred embodiment, the top or the bottom of the light guide sheet 5 is provided with a thickening convex block 10, the thickening convex block 10 is made of transparent materials, the upper end and the lower end of the thickening convex block 10 are respectively provided with a key 101 and are adhered to the light guide sheet 5, the thickening convex block 10 is positioned at the middle position of the bottom or the top of the light guide sheet 5, the thickening convex block 10 is positioned at the middle position of the upper part of the elastic sheet 4, and the thickening convex block 10 is used for cooperating with the key 101 to link and press the elastic sheet 4, so that the key 101 can better press the elastic sheet 4.
As a preferred embodiment, the light guide sheet 5 includes a light guide body 51, and an extended light-in portion 52 connected to the outside of the light guide body 51, the extended light-in portion 52 extends over the right under the key 101 and the right above the spring sheet 4, and the extended light-in portion 52 corresponds to the light-emitting end of the LED light source 6. In this embodiment, two extended light-entering portions 52 of each light guide sheet 5 are symmetrically disposed at two opposite ends of the light guide body 51, and one of the extended light-entering portions 52 of each light guide sheet 5 corresponds to the light-emitting end of the LED light source 6. Through all being equipped with at the opposite both ends of leaded light body 51 and extending into optical portion 52 for light guide piece 5 wholly is symmetrical structure, and the structure is pleasing to the eye, and the leaded light is even, can just match moreover and install in first accommodation region 100, is difficult for moving to the second accommodation region 200 direction.
As a preferred embodiment, the key 101 has a circular top cross-sectional shape, the key 101 is located at a central position above the light guide body 51, and the top area of the light guide body 51 is larger than the top area of the key 101, so that the edge of the key 101 does not protrude out of the peripheral edge of the light guide body 51, and the whole key 101 has an effect of uniformly emitting light.
As a preferred embodiment, the panel layer 1 is made of a transparent material, for example, a transparent PET material, and the PET has excellent service life of the switch key 101 and excellent corrosion resistance and wear resistance, and excellent insulation performance; the keys 101 are protruding structures formed on the panel layer 1 in a protruding mode, pattern coatings are arranged on the top surface or the bottom surface of the panel layer 1 in a printing mode, and the pattern coatings are provided with a plurality of second avoidance holes which are in one-to-one correspondence and avoid the keys 101, so that light sources emitted by the LED light sources 6 only penetrate out of the positions of the keys 101, and the pattern coatings are not shown in the attached drawings.
As a preferred embodiment, the circuit layer 3 is electrically connected to a connector 31, and the membrane switch is electrically connected to the connector 31 to transmit a control command. Further, the gum layer 9 is provided with a connector avoiding hole, so that one end of the connector 31 can pass through the gum layer 9 from the connector avoiding hole.
The foregoing is only a preferred embodiment of the present utility model, and all technical solutions for achieving the object of the present utility model by substantially the same means are included in the scope of the present utility model.
Claims (10)
1. The utility model provides a take thin film switch of multicolor LED application, includes panel layer (1), thickening layer, first viscose layer (2), circuit layer (3), gum layer (9) that set gradually from top to bottom, be equipped with a plurality of buttons (101) on panel layer (1), be equipped with on first viscose layer (2) by button (101) drive trigger circuit layer (3) send out a plurality of shell fragment (4) of control signal, every shell fragment (4) corresponds one button (101); the method is characterized in that: the thickening layer is provided with a plurality of containing holes which are in one-to-one correspondence with the keys (101), the containing holes comprise a first containing area (100) which is positioned right below the keys (101) and a second containing area (200) which is far away from the right below the keys (101), and the second containing area (200) is communicated with the first containing area (100); a light guide sheet (5) positioned between the key (101) and the elastic sheet (4) is positioned and installed in each first accommodating area (100); the circuit layer (3) is provided with an LED light source (6) which extends into the second accommodating area (200) and transmits light sources to the light guide sheet (5).
2. A thin film switch with magical color LED application as claimed in claim 1 wherein: the second receiving area (200) has a smaller plan view area than the first receiving area (100).
3. A thin film switch with magical color LED application as claimed in claim 1 wherein: the overlooking cross section shape of the first accommodating area (100) is the same as that of the light guide sheet (5), and the light guide sheet (5) is installed in the first accommodating area (100) in a matching way.
4. A thin film switch with magical color LED application as claimed in claim 1 wherein: the thickening layer comprises a first isolation layer (7) and a filling layer (8) which are sequentially arranged from top to bottom, and the accommodating hole penetrates through the first isolation layer (7) and the filling layer (8) from top to bottom.
5. A thin film switch with magical color LED application as claimed in claim 4 wherein: the first isolation layer (7) comprises a main isolation layer (71), a second adhesive layer (72) arranged on the top surface of the main isolation layer (71) and a third adhesive layer (73) arranged on the bottom surface of the main isolation layer (71), the second adhesive layer (72) enables the panel layer (1) and the main isolation layer (71) to be adhered and fixed together, and the third adhesive layer (73) enables the main isolation layer (71) and the filling layer (8) to be adhered and fixed together.
6. A thin film switch with magical color LED application as claimed in claim 1 wherein: the back of the circuit layer (3) is provided with a back adhesive layer (9).
7. A thin film switch with magical color LED application as claimed in claim 1 wherein: the top or the bottom of the light guide piece (5) is provided with a thickening lug (10), the thickening lug (10) is positioned at the middle position of the bottom or the top of the light guide piece (5), and the thickening lug (10) is positioned at the middle position above the elastic piece (4).
8. A thin film switch with magical color LED application as claimed in claim 1 wherein: the light guide piece (5) comprises a light guide body (51) and an extending light entering part (52) connected to the outer side of the light guide body (51), the extending light entering part (52) extends to be over the right lower portion of the key (101) and the right upper portion of the elastic piece (4), and the extending light entering part (52) corresponds to a light emitting end of the LED light source (6).
9. A thin film switch with magical color LED application as claimed in claim 8 wherein: the extending light-entering parts (52) of each light guide sheet (5) are symmetrically arranged at two opposite ends of the light guide body (51), and one extending light-entering part (52) of each light guide sheet (5) corresponds to the light-emitting end of the LED light source (6).
10. A thin film switch with magical color LED application as claimed in claim 8 wherein: the key (101) is positioned at the center position above the light guide body (51), and the overlooking area of the light guide body (51) is larger than that of the key (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322238878.6U CN220710165U (en) | 2023-08-19 | 2023-08-19 | Film switch with multicolor LED application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322238878.6U CN220710165U (en) | 2023-08-19 | 2023-08-19 | Film switch with multicolor LED application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220710165U true CN220710165U (en) | 2024-04-02 |
Family
ID=90452975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322238878.6U Active CN220710165U (en) | 2023-08-19 | 2023-08-19 | Film switch with multicolor LED application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220710165U (en) |
-
2023
- 2023-08-19 CN CN202322238878.6U patent/CN220710165U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |