CN216901617U - Capacitor touch key device with LED display function - Google Patents

Abstract

The utility model discloses a capacitive touch key device with an LED display function. The capacitive touch key device with the LED display function comprises: the LED lamp comprises a PCB, an LED lamp arranged on the PCB, a capacitance induction layer arranged on the PCB, a supporting structure arranged above the PCB and a decorative film arranged above the supporting structure; the LED lamp and the capacitance induction layer are arranged on different sides of the PCB; at least one hollow pattern is arranged on the decorative film. The technical scheme of the utility model can enrich the display effect of the capacitive touch key device and solve the problem of single display effect of the capacitive touch key device.

Description

Capacitor touch key device with LED display function

Technical Field

The embodiment of the utility model relates to the technical field of touch keys, in particular to a capacitive touch key device with an LED display function.

Background

With the development of science and technology, IT products enter an intelligent era, and human-computer interaction is performed through mechanical key lamp entity equipment at first, and then the touch control era is reached.

Currently, touch switches are widely used in electrical appliances. However, in the prior art, the touch key has a single surface effect and a single display effect, which brings inconvenience to the user.

SUMMERY OF THE UTILITY MODEL

The utility model provides a capacitive touch key device with an LED display function, which is used for enriching the display effect of the capacitive touch key device and solving the problem of single display effect of the capacitive touch key device.

In a first aspect, an embodiment of the present invention provides a capacitive touch key device with an LED display function, including:

the LED lamp comprises a PCB, an LED lamp arranged on the PCB, a capacitance induction layer arranged on the PCB, a supporting structure arranged above the PCB and a decorative film arranged above the supporting structure;

wherein, at least one hollow pattern is arranged on the decorative film.

Optionally, the decorative film comprises a translucent film and a layer of opaque film compounded on the translucent film; the hollow patterns are arranged on the semitransparent film, and the projection of the capacitance induction layer on the PCB completely covers the projection of the hollow patterns on the PCB.

Optionally, the LED lamp and the capacitance sensing layer are disposed between the PCB board and the support structure;

wherein one side of the support structure close to the LED lamp comprises a concave structure for accommodating the LED lamp;

the projection of the capacitance induction layer on the PCB is not overlapped with the projection of the concave structure on the PCB.

Optionally, the PCB board includes a first surface and a second surface disposed oppositely; the first surface is arranged on one side of the PCB, which is far away from the supporting structure, and the second surface is arranged on one side of the PCB, which is near to the supporting structure; the LED lamp is arranged on the first surface, a through hole is formed in the PCB, and the LED lamp is partially embedded into the through hole;

correspondingly, the capacitance sensing layer is arranged on the second surface.

Optionally, the PCB board comprises a first surface and a second surface thereon; the first surface is arranged on one side of the PCB far away from the supporting structure, and the second surface is arranged on one side of the PCB close to the supporting structure; the LED lamp is arranged on the second surface, and one side, close to the LED lamp, of the supporting structure comprises a concave structure for accommodating the LED lamp;

correspondingly, the capacitance induction layer is arranged on the first surface.

Optionally, the support structure comprises a first transparent support layer and a second transparent support layer, the second transparent support layer being disposed on a side of the first transparent support layer remote from the decorative film; the first transparent support layer is used for supporting the decoration film.

The thickness of the second transparent support layer is greater than the thickness of the first transparent support layer.

Optionally, the second transparent support layer comprises a cavity for receiving an optical film.

Optionally, the optical film is connected to the first transparent support layer by an adhesive layer; the orthographic projection of the optical film on the PCB completely covers the orthographic projection of the LED lamp on the PCB.

Optionally, the PCB board includes a capacitor touch unit, an LED control unit and a main control unit, the capacitor touch unit and the LED control unit are electrically connected to the main control unit, and the main control unit is configured to control the LED module according to the capacitor touch module, so as to control the display of the LED lamp.

The utility model provides a capacitive touch key device with an LED display function, which comprises: the LED lamp comprises a PCB, an LED lamp arranged on the PCB, a capacitance induction layer arranged on the PCB, a supporting structure arranged above the PCB and a decorative film arranged above the supporting structure; the LED lamp and the capacitance induction layer are arranged on different sides of the PCB; at least one hollow pattern is arranged on the decorative film. According to the technical scheme, the display effect of the capacitive touch key device can be enriched, so that a user can identify the function represented by the key according to key display, the user experience is improved, and the problem of single display effect of the capacitive touch key device is solved.

Drawings

Fig. 1 is a schematic structural diagram of a capacitive touch key device with an LED display function according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating placement of an LED lamp and a capacitance sensing layer according to a first embodiment of the utility model;

fig. 3 is a schematic view illustrating another arrangement of the LED lamp and the capacitance sensing layer according to an embodiment of the utility model;

fig. 4 is a schematic view illustrating another arrangement of the LED lamp and the capacitance sensing layer according to an embodiment of the utility model;

fig. 5 is a schematic structural diagram of another capacitive touch key device with an LED display function according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another capacitive touch key device with an LED display function according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of another capacitive touch key device with an LED display function according to an embodiment of the present invention;

fig. 8 is a partial top view of another capacitive touch key according to an embodiment of the present invention;

fig. 9 is a schematic view of a part of a PCB structure according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another capacitive touch key device with an LED display function according to a second embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Example one

Fig. 1 is a schematic structural diagram of a capacitive touch key device with an LED display function according to an embodiment of the present invention, where the capacitive touch key device with the LED display function includes:

a PCB 110, an LED lamp 120 disposed on the PCB, a capacitive sensing layer 130 disposed on the PCB, a support structure 140 disposed above the PCB, and a decorative film 150 disposed above the support structure; wherein, at least one hollow pattern is arranged on the decoration film 150.

Illustratively, the capacitance sensing layer may be one or more, and the support structure may be transparent.

Exemplarily, as shown in fig. 2, a schematic layout of the LED lamp 120 and the capacitance sensing layer 130 is illustrated, referring to fig. 2, the capacitance sensing layer is one, and the LED lamp 120 is disposed corresponding to the hollow pattern.

Exemplarily, as shown in fig. 3, a schematic layout of the LED lamp 120 and the capacitance sensing layer 130 is shown, referring to fig. 3, the number of the capacitance sensing layers may be multiple, and the LED lamp 120 and the capacitance sensing layer are respectively disposed corresponding to the hollow patterns. Specifically, the hollow pattern may be a pattern with a display function, for example: the hollow pattern can also be characters with the functions, such as numbers, characters or symbols; the hollow patterns correspond to the capacitance sensing layer, and the capacitance sensing layer can sense that the position of the decorative film 150 corresponding to the hollow patterns is touched and generate a capacitance sensing signal. The hollow patterns display key patterns through the irradiation of the LED lamp serving as a backlight source, and the display effect is enriched; the material of the translucent film and the shape of the hollow pattern are not particularly limited in the embodiments of the present invention. Through being provided with at least one fretwork pattern on the decorating film for the display effect of electric capacity touch key device that has LED display function is abundanter, has avoided electric capacity touch key device's single problem of display effect, is convenient for discern the button function through the fretwork pattern.

Optionally, the decoration film 150 comprises a translucent film 151 and an opaque film 152 compounded on the translucent film; the hollow pattern is disposed on the translucent film 151, and a projection of the capacitive sensing layer 130 on the PCB 110 completely covers a projection of the hollow pattern on the PCB 110.

Illustratively, the translucent film 151 may be leather, wood grain, or a metal-like film; the opaque film 152 is used for flattening the display interface, and meanwhile, the interference of the outside on the inside of the touch key device is avoided, and the service life of the touch key device is prolonged. Through be provided with the fretwork pattern translucent membrane with opaque membrane can be so that the surface effect of electric capacity touch key device is diversified, simultaneously, when LED lamp 120 did not light, touch key region and non-touch key region difference in appearance is little to the hidden effect of touch key has been realized.

Exemplarily, the capacitance induction layer can be a plurality of, every the capacitance induction layer with every the fretwork pattern corresponds the setting, has reduced the response area on capacitance induction layer, when having guaranteed the sensitivity on capacitance induction layer, when avoiding touching non-button position, controls the LED lamp to light by mistake, has improved touch control's accuracy. For example, as shown in fig. 4, referring to fig. 4, another schematic layout of the LED lamp and the capacitive sensing layer, the capacitive sensing layers are disposed around the LED lamp, and a space is disposed between the capacitive sensing layers.

Optionally, fig. 5 is a schematic structural diagram of another capacitive touch key device with an LED display function according to an embodiment of the present invention. As shown in fig. 5, the LED lamp 120 and the capacitance sensing layer 130 are disposed between the PCB board 110 and the support structure 140; wherein a side of the support structure near the LED lamp comprises a recessed structure for accommodating the LED lamp 120; the projection of the capacitance induction layer on the PCB is not overlapped with the projection of the concave structure on the PCB.

Illustratively, a plurality of the LED lamps 120 are disposed on the PCB 110 and located in the recess structure of the supporting structure, so as to save space and protect the LED lamps. The number of the capacitive sensing layers may be multiple, the capacitive sensing layers 130 are disposed on the PCB 110, and the recessed structure is not disposed on one side of the supporting structure 140 adjacent to the capacitive sensing layer 130.

Optionally, as shown in fig. 6, which is a schematic structural diagram of another capacitive touch key device with an LED display function according to an embodiment of the present invention, referring to fig. 6, the PCB 110 includes a first surface and a second surface that are oppositely disposed; the first surface is disposed on a side of the PCB 110 away from the supporting structure 140, and the second surface is disposed on a side of the PCB 110 adjacent to the supporting structure 140. The LED lamp 120 is disposed on the first surface, a through hole is disposed on the PCB 110, and the LED lamp 120 is partially embedded in the through hole; accordingly, the capacitance sensing layer 130 is disposed on the second surface.

Illustratively, a plurality of through holes are formed in the PCB 110, and each LED lamp 120 is correspondingly placed in each through hole, so that the space is saved, and the LED lamps 120 are protected, and the LED lamps 120 are prevented from being damaged by pressure; meanwhile, the number of the capacitive sensing layers 130 may be multiple, and the through holes are not covered by the capacitive sensing layers 130, so that the light output amount of the LED lamp 120 and the mechanical strength of the capacitive sensing layers 130 are ensured.

Optionally, as shown in fig. 7, a schematic structural diagram of another capacitive touch key device with an LED display function according to an embodiment of the present invention is provided, and referring to fig. 7, the PCB 110 includes a first surface and a second surface; the first surface is disposed on a side of the PCB 110 away from the supporting structure 140, and the second surface is disposed on a side of the PCB 110 adjacent to the supporting structure 140; the LED lamp 120 is disposed on the second surface, and a side of the supporting structure 140 close to the LED lamp 120 includes a concave structure for accommodating the LED lamp 120; accordingly, the capacitance sensing layer 130 is disposed on the first surface.

Illustratively, the number of the concave structures may be one or more. The LED lamp 120 is disposed in the recess structure, so that the LED lamp 120 is further protected, and the capacitance sensing layer 130 is conveniently disposed.

Alternatively, the LED lamp 120 may be a side lamp disposed on the PCB board 110.

Exemplarily, as shown in fig. 8, which is a partial top view of another capacitive touch key provided by the present invention, referring to fig. 8, the LED lamp 120 is disposed on two opposite sides of the capacitive sensing layer 130, and corresponds to the hollow pattern, for example: two LED lamps 120 are correspondingly arranged on each hollow pattern.

Optionally, the PCB 110 includes a capacitive touch unit 111, an LED control unit 112, and a main control unit 113; the capacitive touch unit 111 and the LED control unit 112 are electrically connected to the main control unit 113, respectively, and the capacitive touch unit 111 is configured to collect a capacitive signal of the capacitive sensing layer 130; the main control unit 113 is configured to control the LED control unit 112 according to the capacitance signal; the LED control unit 112 is used for controlling the LED lamp 120.

Specifically, the LED lamps 120 may be connected in series.

Exemplarily, as shown in fig. 9, a schematic view of a partial structure of a PCB according to an embodiment of the present invention is provided, referring to fig. 9, a user touches a key corresponding to a hollow pattern in the decorative film 150, the capacitance sensing layer 130 generates a capacitance sensing signal, the capacitance control unit 111 collects the capacitance sensing signal and transmits the capacitance sensing signal to the main control unit 113, the main control unit 113 generates an LED control signal according to the received capacitance sensing signal and transmits the LED control signal to the LED control unit 112, and the LED control unit 112 is configured to turn on and off the LED lamp 120 according to the LED control signal.

The technical scheme of this embodiment provides a schematic structural diagram of a capacitive touch key device with an LED display function, and the capacitive touch key device with an LED display function includes: PCB board 110, setting are in LED lamp 120, the setting on the PCB board 110 are in electric capacity response layer 130, setting on the PCB board 110 are in bearing structure 140 and the setting of PCB board 110 top are in the decorating film 150 of bearing structure 140 top for the display effect of electric capacity touch key device that has LED display function is abundanter, has avoided electric capacity touch key device's single problem of display effect, is convenient for discern the key function through fretwork pattern.

Example two

Fig. 10 is a schematic structural diagram of another capacitive touch key device with an LED display function according to a second embodiment of the present invention. This embodiment is based on the above embodiment, referring to fig. 10, the support structure 140 includes a first transparent support layer 141 and a second transparent support layer 142, the second transparent support layer is disposed on a side of the first transparent support layer 141 away from the decoration film 150; the first transparent support layer is used to support the decoration film 150.

Specifically, the first transparent support layer 141 is used for supporting the decoration film 150, and the second transparent support layer 142 is used for pulling the LED lamp 120 away from the decoration film 150, thereby improving the display effect.

Optionally, the second transparent support layer 142 includes a cavity for receiving the optical film 160.

Specifically, the material of the optical film 160 may be acrylic resin; the optical film 160 can make the light quantity irradiated to the decoration film 150 more, and the light irradiated to the decoration film 150 more uniform, so that the display is brighter and softer, and the display effect is further improved. Each hollow pattern corresponds to at least one LED lamp 120.

Optionally, the optical film 160 is adhered to the first transparent support layer 141 by an adhesive layer 170; the orthographic projection of the optical film 160 on the PCB 110 completely covers the orthographic projection of the LED lamp 120 on the PCB 110.

Specifically, the optical film 160 is disposed in the cavity and is adhered to the first transparent support layer 141 by the adhesive layer, so that the stability of the optical film is enhanced and the optical film is prevented from sliding in the cavity; wherein the adhesive layer is transparent, increasing the light transmission of light emitted by the LED.

Illustratively, the orthographic projection of the cavity on the PCB 110 completely covers the orthographic projection of the recessed structure on the PCB 110, so that the orthographic projection of the optical film on the PCB 110 can completely cover the orthographic projection of the LED lamp 120 on the PCB 110, ensuring that the light emitted by the LED lamp 120 can penetrate through the optical film 160, and further improving the display uniformity.

Optionally, the projection of the capacitive sensing layer 130 on the PCB 110 completely covers the projection of the hollow pattern on the PCB 110.

Optionally, the thickness of the second transparent support layer 142 is greater than the thickness of the first transparent support layer 141.

Illustratively, by setting the thickness of the second transparent support layer 142 to be greater than the thickness of the first transparent support layer 141, the distance between the LED lamp 120 and the hollow pattern is increased, so as to further improve the display effect and increase the mechanical strength of the second transparent support layer.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A capacitive touch key device with an LED display function, comprising: the LED lamp comprises a PCB, an LED lamp arranged on the PCB, a capacitance induction layer arranged on the PCB, a supporting structure arranged above the PCB and a decorative film arranged above the supporting structure;

wherein, at least one hollow pattern is arranged on the decorative film.

2. The capacitive touch key device with the LED display function according to claim 1, wherein the decoration film comprises a semi-transparent film and an opaque film compounded on the semi-transparent film; the hollow patterns are arranged on the semitransparent film, and the projection of the capacitance induction layer on the PCB completely covers the projection of the hollow patterns on the PCB.

3. The capacitive touch key device with the LED display function according to claim 1, wherein the LED lamp and the capacitive sensing layer are disposed between the PCB board and the support structure;

wherein one side of the supporting structure close to the LED lamp comprises a concave structure for accommodating the LED lamp;

the projection of the capacitance induction layer on the PCB is not overlapped with the projection of the concave structure on the PCB.

4. The capacitive touch key device with the LED display function according to claim 1, wherein the PCB comprises a first surface and a second surface which are oppositely arranged; the first surface is arranged on one side of the PCB far away from the supporting structure, and the second surface is arranged on one side of the PCB close to the supporting structure;

the LED lamp is arranged on the first surface, a through hole is formed in the PCB, and the LED lamp is partially embedded into the through hole;

correspondingly, the capacitance induction layer is arranged on the second surface.

5. The capacitive touch key device with the LED display function according to claim 1, wherein the PCB comprises a first surface and a second surface which are oppositely arranged; the first surface is arranged on one side of the PCB, which is far away from the supporting structure, and the second surface is arranged on one side of the PCB, which is near to the supporting structure;

the LED lamp is arranged on the second surface, and one side, close to the LED lamp, of the supporting structure comprises a concave structure for accommodating the LED lamp;

correspondingly, the capacitance induction layer is arranged on the first surface.

6. The capacitive touch key device with LED display function according to claim 1, wherein the supporting structure comprises a first transparent supporting layer and a second transparent supporting layer, the second transparent supporting layer is disposed on a side of the first transparent supporting layer away from the decoration film;

the first transparent support layer is used for supporting the decoration film.

7. The capacitive touch key device with LED display function according to claim 6, wherein the second transparent supporting layer comprises a cavity for receiving an optical film.

8. The capacitive touch key device with the LED display function according to claim 7, wherein the optical film is connected to the first transparent support layer through an adhesive layer;

the orthographic projection of the optical film on the PCB completely covers the orthographic projection of the LED lamp on the PCB.

9. The capacitive touch key device with LED display function according to claim 6, wherein the thickness of the second transparent support layer is greater than the thickness of the first transparent support layer.

10. The capacitive touch key device with the LED display function according to claim 1, wherein the PCB board comprises a capacitive touch unit, an LED control unit and a main control unit;

the capacitive touch control unit and the LED control unit are respectively electrically connected with the main control unit, and the capacitive touch control unit is used for acquiring a capacitive signal of the capacitive sensing layer; the main control unit is used for controlling the LED control unit according to the capacitance signal; the LED control unit is used for controlling the LED lamp.

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