CN202059386U - Luminous touch key - Google Patents
Luminous touch key Download PDFInfo
- Publication number
- CN202059386U CN202059386U CN2011201203895U CN201120120389U CN202059386U CN 202059386 U CN202059386 U CN 202059386U CN 2011201203895 U CN2011201203895 U CN 2011201203895U CN 201120120389 U CN201120120389 U CN 201120120389U CN 202059386 U CN202059386 U CN 202059386U
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- Prior art keywords
- luminous
- touch key
- optical waveguide
- press
- waveguide layer
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- Expired - Lifetime
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Abstract
The utility model provides a luminous touch key which comprises a PCB (printed circuit board) with a touch processing chip. The luminous touch key also comprises a luminous touch key which is clung to the PCB; a part of the PCB corresponding to the key is coated with copper; and the coated copper is used as one end of a capacitor to be connected to the touch processing chip in a circuit of the PCB. Therefore, the touch key is sensitive in response and gives out light uniformly.
Description
Technical field
The utility model relates to a kind of luminous touch key-press.
Background technology
Existing luminous touch key-press, be with on the face lamp of spring attached to the LED making, spring is connected with printed circuit board (PCB) (PCB) circuit, sense the user when touching the capacitance variations that the face lamp causes, capacitance signal changes into the input signal of the signal of high-low level as control chip on the pcb board after handling via corresponding touch process chip.Its circuit structure is:
The spring spiral is wound in circle, shape such as square, identical shaped face lamp is put into spring inner, the common luminous component of forming a band spring in one pin of spring and negative and positive the two poles of the earth of LED lamp is welded on the pcb board, touch on the input port of process chip in the one pin place in circuit of spring, be used to respond to extraneous changes in capacitance, be touched to have determined whether button; Ground and the 5V in the pcb board circuit inserted at negative and positive the two poles of the earth of LED lamp respectively, with the power supply of opposite lamp, on demand this face lamp lighted.
Existing luminous touch key-press displaying scheme because usefulness is LED face lamp, only is dealt into the top from the below direct projection, and whole illumination effect is inhomogeneous.And owing to use spring to respond to extraneous changes in capacitance, induction area is little, and the sensitiveness of capacitance variations is not strong to external world, and the spring center position do not respond to transmission medium, when by to the center time, responds to insensitive.
The utility model content
In view of this, main purpose of the present utility model is to provide a kind of luminous touch key-press, and is sensitive and luminous even to realize the touch key-press induction.
Luminous touch key-press provided by the invention comprises having the pcb board 1 that touches process chip 12, also comprises:
Be close to the luminous touch key-press 2 that pcb board 1 is provided with;
Corresponding key position covers copper 11 on the described pcb board 1, and this covers copper 11 and is connected to touch process chip 12 in pcb board 1 circuit as an end of electric capacity.
By last, by covering copper as electric capacity one end, area is big, so capacitive sensing is highly sensitive, adopts the mode of luminous touch key-press can realize luminous even.Promptly, can make finger and the capacitance variations of covering the copper generation penetrate luminous touch key-press, act on covering on the copper induced key on the pcb board under the luminous touch key-press, accomplish each position inductive effects unanimity of button, and covering copper makes area big, more sensitive, and each sensitivity of button is all fine, avoids the not good problem of center sensitivity as prior art.
Optionally, described luminous touch key-press 2 comprises: be close to successively setting following light shield layer 21, optical waveguide layer 22, go up light shield layer 23; Be arranged at the luminous component 24 of optical waveguide layer 22 at least one sides; The described light shield layer 23 of going up has been engraved the button pattern.
By last, adopt the luminous touch key-press of this mode, luminous component is positioned at the optical waveguide layer side, the luminous mode of side can realize luminous even, light guide plate is with light uniformity guiding top, make that illumination effect is highlighted, soft, uniformity, the outward appearance of button pattern displaying is finer and smoother, avoids producing luminous point as prior art.
Optionally, described luminous touch key-press 2 comprises: following light shield layer 21, the optical waveguide layer 22 of being close to setting successively; Be arranged at the luminous component 24 of optical waveguide layer 22 at least one sides; Described optical waveguide layer 22 inside have the button pattern.
By last, adopt the luminous touch key-press of this mode, luminous component is positioned at the optical waveguide layer side, the luminous mode of side can realize that luminous evenly light guide plate is light uniformity guiding top, makes that illumination effect is highlighted, soft, uniformity, the outward appearance of button pattern displaying is finer and smoother, avoid producing luminous point as prior art, and save light shield layer, button shows more penetrating.Because the solid-state optical waveguide layer inside that is positioned at of button, demonstration can be more three-dimensional.
Optionally, described luminous touch key-press 2 comprises: following light shield layer 21, the optical waveguide layer 22 of being close to setting successively; Be arranged at the luminous component 24 of optical waveguide layer 22 at least one sides; Described light shield layer 21 down is printed with the button pattern towards the one side of optical waveguide layer 22.
By last, adopt the luminous touch key-press of this mode, luminous component is positioned at the optical waveguide layer side, the luminous mode of side can realize that luminous evenly light guide plate is light uniformity guiding top, makes that illumination effect is highlighted, soft, uniformity, the outward appearance of button pattern displaying is finer and smoother, avoid producing luminous point as prior art, and save light shield layer, printed patterns is realized more convenient on following light shield layer.
Wherein, also comprise: the side of luminous component 24 not being installed at described optical waveguide layer 22 is provided with reflecting part.
By last, can under the situation that reduces luminous component,, avoid light to run off, and increase brightness by the mode of reflected back light guide plate by reflection way.
Wherein, described optical waveguide layer 22 at least one sides form mounting groove or the installing hole with luminous component 24 couplings, and described luminous component embeds described mounting groove or installing hole is installed.
By last, install by the mode that embeds and to be convenient to the fixing of luminous component, and save space more.
Optionally, described time light shield layer 21 is for can catoptrically touching; Described optical waveguide layer 22 is the light-permeable material; Described luminous component 24 is the LED lamp.
Wherein, described luminous component 24 the two poles of the earth are inserted described touch process chip 12 and power supply respectively; Described touch process chip 12 is used to control luminous component 24 ground connection or disconnects and being connected of ground, and it is shinny or extinguish thereby control, and according to the described variation of covering the capacitance that copper 11 provides, controls the brightness of luminous component 24.
By last, thereby when finger contact the utility model button, remind user's soft-touch control success, avoid not causing the user not know whether push button because of touch key-press has feedback information by the variation of brightness.
Wherein, apply two-sided conducting resinl between luminous touch key-press 2 and the pcb board 1.
By last, further increase compactness between these two devices, reduce air void, thereby improve key induced sensitivity.
Description of drawings
Fig. 1 is the luminous touch key-side of a utility model face schematic diagram;
Fig. 2 is the pcb board front schematic view of the luminous touch key-press of the utility model;
Fig. 3 is the luminous touch press-key structure schematic diagram of the luminous touch key-press of the utility model;
Fig. 4 is the circuit connection diagram of the luminous touch key-press of the utility model;
Fig. 5 is a button pattern schematic diagram.
Embodiment
Show luminous touch key-press schematic diagram of the present utility model as Fig. 1, comprise pcb board 1 and the luminous touch key-press 2 of being close to setting.Luminous touch key-press pcb board 1 front schematic view as shown in Figure 2, corresponding key position large tracts of land is covered copper 11 on pcb board 1, this covers copper 11 and is connected on the input port that touches process chip 12 in pcb board 1 circuit (referring to Fig. 4) as an end of electric capacity, be used to respond to extraneous changes in capacitance, be touched to have determined whether button.In order further to improve touch sensitivity, between luminous touch key-press 2 and pcb board 1, can apply two-sided conducting resinl, to increase compactness between these two devices.
Show the structure of luminous touch key-press 2 as Fig. 3, wherein luminous touch key-press 2 comprises following light shield layer 21, optical waveguide layer 22, the last light shield layer of being close to 23 from the bottom to top, wherein, luminous component 24 is arranged in optical waveguide layer 22 both sides (Fig. 3 luminous component 24 embeds optical waveguide layer 22 both sides).
Wherein, following light shield layer 21 is by constituting by catoptrical film, and optical waveguide layer 22 is made of the light-permeable material, and last light shield layer 23 is made of the film of engraving the button pattern, the display button pattern, promptly having demonstrated the button pattern as Fig. 5 is the example of up and down arrows button.
Be understood that, also can be in light-permeable material inside, as form the button pattern of light-permeable material inside from its below mode such as upwards carve, so also can remove and go up light shield layer 23, directly receive luminous component 24 irradiation scatterings and form the button pattern by the inner pattern of light-permeable material.Perhaps, described button pattern directly is printed on down the one side of light shield layer 21 towards optical waveguide layer 22, still can the display button pattern.
Wherein, luminous component 24 can be installed on optical waveguide layer 22 both sides for emitting led, and as shown in Figure 2, optical waveguide layer 22 both sides form mounting groove or the installing hole that mates with LED in the utility model, by embedded mode described LED is installed on optical waveguide layer 22 both sides.
Be understood that luminous component 24 also can only be installed on optical waveguide layer 22 1 sides, the brightness that just can cause button to show reduces.Perhaps, in optical waveguide layer 22 1 sides luminous component 24 is installed, in the side that luminous component 24 is not installed, as over against a side or in addition three sides reflecting part is set, as reflecting strips, reduced the use of LED when then can reduce the luminance loss, reach and reduce cost and purpose of energy saving.Reflecting strips can adopt bonding method to install.
The circuit that shows the luminous touch key-press that the utility model relates to as Fig. 4 connects.Wherein, as mentioned above, as covering on the input port that copper 11 is connected to the touch process chip 12 in pcb board 1 circuit of an end of electric capacity, touch process chip 12 and the 5V in pcb board 1 circuit inserted at the two poles of the earth of LED lamp respectively, can control LED lamp ground connection or disconnect and being connected of ground by touching process chip 12, it is shinny or extinguish thereby control.In addition, the utility model touches process chip 12 also by connecting the described variation of covering the capacitance of copper 11 acquisitions, the brightness of control LED lamp, thereby when finger contact the utility model button, remind user's soft-touch control success by the variation of brightness, avoid not causing the user not know whether push button because of touch key-press has feedback information.
Wherein, the method for control LED brightness can adopt following two kinds:
A kind of is to change the electric current that flows through LED, because LED brightness is proportional with the electric current that flows through basically usually, therefore touch the process chip 12 inner some resistance of connecting that are provided with LED, and control the variation of described resistance according to capacitance variation, as the mode by by-path turn-on etc., realize variation, and control LED brightness changes by the LED electric current;
Another kind method is to utilize the visual persistence of human eye, promptly realize the LED brilliance control with pulse duration modulation method, promptly sexually revise light impulse length (being duty ratio) according to the capacitance variation control cycle, promptly touch the switching frequency of process chip 12 internal control LED earthed switches, can control LED brightness equally and change.
The luminous touch key-press of the utility model is fixed in when using on the electric device appearance component because wherein luminous touch key-press 2 has adopted the LED side luminous, can realize luminous evenly, night the non-boundary displaying scheme that obviously can distinguish.And, owing to adopted the mode of covering copper 11, increased area as electric capacity, therefore increased sensitivity, make the touch sensible sensitivity.
Wherein, the method for above-mentioned two kinds of control LED lamps brightness all can repeat no more by to touch process chip 12 (can by the chip microcontroller) realization of programming.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; 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 (9)
1. a luminous touch key-press comprises the pcb board (1) with touch process chip (12), it is characterized in that, also comprises:
Be close to the luminous touch key-press (2) that pcb board (1) is provided with;
Described pcb board (1) is gone up corresponding key position and is covered copper (11), and this covers copper (11) and is connected to touch process chip (12) in pcb board (1) circuit as an end of electric capacity.
2. luminous touch key-press according to claim 1 is characterized in that, described luminous touch key-press (2) comprising:
Following light shield layer (21), optical waveguide layer (22), the last light shield layer (23) of being close to setting successively;
Be arranged at the luminous component (24) of at least one side of optical waveguide layer (22);
The described light shield layer (23) of going up has been engraved the button pattern.
3. luminous touch key-press according to claim 1 is characterized in that, described luminous touch key-press (2) comprising:
Following light shield layer (21), the optical waveguide layer (22) of being close to setting successively;
Be arranged at the luminous component (24) of at least one side of optical waveguide layer (22);
Described optical waveguide layer (22) inside has the button pattern.
4. luminous touch key-press according to claim 1 is characterized in that, described luminous touch key-press (2) comprising:
Following light shield layer (21), the optical waveguide layer (22) of being close to setting successively;
Be arranged at the luminous component (24) of at least one side of optical waveguide layer (22);
Described light shield layer (21) down is printed with the button pattern towards the one side of optical waveguide layer (22).
5. according to claim 2,3 or 4 described luminous touch key-presss, it is characterized in that also comprise: the side that luminous component (24) is not installed at described optical waveguide layer (22) is provided with reflecting part.
6. luminous touch key-press according to claim 5 is characterized in that,
At least one side of described optical waveguide layer (22) forms mounting groove or the installing hole with luminous component (24) coupling;
Described luminous component (24) embeds described mounting groove or installing hole is installed.
7. luminous touch key-press according to claim 5 is characterized in that,
Described light shield layer (21) down is for can catoptrically touching;
Described optical waveguide layer (22) is the light-permeable material;
Described luminous component (24) is the LED lamp.
8. according to claim 2,3 or 4 described luminous touch key-presss, it is characterized in that,
Described luminous component (24) the two poles of the earth are inserted described touch process chip (12) and power supply respectively;
Described touch process chip (12) is used to control luminous component (24) ground connection or disconnects and being connected of ground, and it is shinny or extinguish thereby control, and according to the described variation of covering the capacitance that copper (11) provides, controls the brightness of luminous component (24).
9. luminous touch key-press according to claim 1 is characterized in that, applies two-sided conducting resinl between luminous touch key-press (2) and the pcb board (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201203895U CN202059386U (en) | 2011-04-20 | 2011-04-20 | Luminous touch key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201203895U CN202059386U (en) | 2011-04-20 | 2011-04-20 | Luminous touch key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202059386U true CN202059386U (en) | 2011-11-30 |
Family
ID=45019348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201203895U Expired - Lifetime CN202059386U (en) | 2011-04-20 | 2011-04-20 | Luminous touch key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202059386U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946245A (en) * | 2012-11-07 | 2013-02-27 | 广东安居宝数码科技股份有限公司 | Touch switch |
| CN107483043A (en) * | 2017-09-20 | 2017-12-15 | 广东海明晖电子科技有限公司 | Electromagnetic heater touches bond structure |
| CN109256296A (en) * | 2018-12-10 | 2019-01-22 | 广州星弈电子科技有限公司 | A kind of adjusting knob equipped with touching switch |
| CN109920342A (en) * | 2019-01-31 | 2019-06-21 | 绍兴光彩显示技术有限公司 | A kind of touch sensible charactron |
| CN110083260A (en) * | 2018-01-26 | 2019-08-02 | 芜湖美的厨卫电器制造有限公司 | Display device and household electrical appliance with it |
| CN111917404A (en) * | 2020-07-08 | 2020-11-10 | 上汽大众汽车有限公司 | Touch switch assembly with active optical feedback and control method |
-
2011
- 2011-04-20 CN CN2011201203895U patent/CN202059386U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946245A (en) * | 2012-11-07 | 2013-02-27 | 广东安居宝数码科技股份有限公司 | Touch switch |
| CN102946245B (en) * | 2012-11-07 | 2015-08-26 | 广东安居宝数码科技股份有限公司 | Soft-touch control |
| CN107483043A (en) * | 2017-09-20 | 2017-12-15 | 广东海明晖电子科技有限公司 | Electromagnetic heater touches bond structure |
| CN110083260A (en) * | 2018-01-26 | 2019-08-02 | 芜湖美的厨卫电器制造有限公司 | Display device and household electrical appliance with it |
| CN110083260B (en) * | 2018-01-26 | 2024-04-05 | 芜湖美的厨卫电器制造有限公司 | Display device and household appliance with same |
| CN109256296A (en) * | 2018-12-10 | 2019-01-22 | 广州星弈电子科技有限公司 | A kind of adjusting knob equipped with touching switch |
| CN109920342A (en) * | 2019-01-31 | 2019-06-21 | 绍兴光彩显示技术有限公司 | A kind of touch sensible charactron |
| CN111917404A (en) * | 2020-07-08 | 2020-11-10 | 上汽大众汽车有限公司 | Touch switch assembly with active optical feedback and control method |
| CN111917404B (en) * | 2020-07-08 | 2023-08-25 | 上汽大众汽车有限公司 | Touch switch assembly with active optical feedback and control method |
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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: 20111130 |
|
| CX01 | Expiry of patent term |