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

Abstract

The utility model discloses a capacitive touch button device with LED display function. The capacitive touch button device with LED display function includes: a PCB board, an LED lamp arranged on the PCB board, a capacitance sensing layer arranged on the PCB board, and a support structure arranged above the PCB board and a decorative film arranged above the support structure; wherein, the LED light and the capacitive sensing layer are arranged on different sides of the PCB board; at least one hollow pattern is arranged on the decorative film. The technical solution of the utility model can enrich the display effect of the capacitive touch key device, and solve the single problem of the display effect of the capacitive touch key device.

Description

A capacitive touch key device with LED display function

technical field

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

Background technique

With the development of science and technology, IT products have entered the era of intelligence. Human-computer interaction was first carried out through physical equipment with mechanical buttons and lights, and entered the era of touch.

At present, touch switches are widely used in electrical appliances. However, the touch keys in the prior art have a single surface effect and a single display effect, which brings inconvenience to the user.

Utility model content

The utility model provides a capacitive touch button device with an LED display function, so as to realize rich display effects of the capacitive touch button device and solve the single problem of the display effect of the capacitive touch button device.

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

A PCB board, an LED lamp arranged on the PCB board, a capacitance sensing layer arranged on the PCB board, a support structure arranged above the PCB board, and a decorative film arranged above the support structure;

Wherein, the decorative film is provided with at least one hollow pattern.

Optionally, the decorative film includes a translucent film and a layer of opaque film compounded above the translucent film; the hollow pattern is arranged on the translucent film, and the capacitance sensing layer is on the PCB. The projection on the board completely covers the projection of the hollow pattern on the PCB board.

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

Wherein, a side of the support structure close to the LED lamp includes a concave structure for accommodating the LED lamp;

The projection of the capacitance sensing layer on the PCB board does not overlap with the projection of the recessed structure on the PCB board.

Optionally, the PCB board includes a first surface and a second surface disposed oppositely; the first surface is disposed on a side of the PCB board away from the support structure, and the second surface is disposed on the The PCB board is adjacent to one side of the support structure; the LED lights are arranged on the first surface, and the PCB board is provided with through holes, and the LED lights are partially embedded in the through holes;

Correspondingly, the capacitance sensing layer is disposed on the second surface.

Optionally, the PCB board includes a first surface and a second surface; the first surface is provided on the side of the PCB board away from the support structure, and the second surface is provided adjacent to the PCB board one side of the support structure; the LED light is disposed on the second surface, and a side of the support structure close to the LED light includes a concave structure for accommodating the LED light;

Correspondingly, the capacitance sensing layer is disposed on the first surface.

Optionally, the support structure includes a first transparent support layer and a second transparent support layer, the second transparent support layer is disposed on a side of the first transparent support layer away from the decorative film; the first transparent support layer The transparent support layer is used to support the decorative 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 includes a cavity for accommodating the optical film.

Optionally, 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 .

Optionally, the PCB board includes a capacitive touch unit, an LED control unit and a main control unit, the capacitive touch unit and the LED control unit are respectively electrically connected to the main control unit, and the main control unit is used for The LED module is controlled according to the capacitive touch module, thereby controlling the display of the LED light.

The utility model provides a capacitive touch button device with an LED display function, comprising: a PCB board, an LED lamp arranged on the PCB board, a capacitance sensing layer arranged on the PCB board, a A support structure above the PCB board and a decorative film disposed above the support structure; wherein the LED lights and the capacitive sensing layer are disposed on different sides of the PCB board; at least one hollow is provided on the decorative film pattern. The technical solution of the utility model can enrich the display effect of the capacitive touch key device, so that the user can identify the function represented by the key according to the key display, improve the user experience, and avoid the single problem of the display effect of the capacitive touch key device.

Description of drawings

1 is a schematic structural diagram of a capacitive touch key device with an LED display function provided by Embodiment 1 of the present invention;

2 is a schematic diagram of the arrangement of an LED lamp and a capacitive sensing layer provided by Embodiment 1 of the present invention;

3 is another schematic diagram of the arrangement of the LED lamp and the capacitive sensing layer provided by the first embodiment of the present invention;

4 is a schematic diagram of another arrangement of the LED lamp and the capacitive sensing layer provided by the first embodiment of the present invention;

5 is a schematic structural diagram of another capacitive touch key device with LED display function provided by Embodiment 1 of the present invention;

6 is a schematic structural diagram of another capacitive touch key device with LED display function provided by Embodiment 1 of the present invention;

7 is a schematic structural diagram of another capacitive touch key device with an LED display function provided by Embodiment 1 of the present invention;

8 is a partial top view of another capacitive touch button provided in Embodiment 1 of the present invention;

FIG. 9 is a partial structural schematic diagram of a PCB board provided by Embodiment 1 of the present invention;

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

Detailed ways

The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Example 1

FIG. 1 is a schematic structural diagram of a capacitive touch button device with LED display function provided by Embodiment 1 of the present invention. The capacitive touch button device with LED display function includes:

The PCB board 110, the LED lights 120 provided on the PCB board, the capacitance sensing layer 130 provided on the PCB board, the support structure 140 provided above the PCB board, and the decoration provided above the support structure Film 150; wherein, the decorative film 150 is provided with at least one hollow pattern.

Exemplarily, the capacitance sensing layer may be one or multiple, and the supporting structure may be transparent.

Exemplarily, as shown in FIG. 2 , a schematic diagram of the placement of the LED lamp 120 and the capacitance sensing layer 130 is shown. Referring to FIG. 2 , there is one capacitance sensing layer, and the LED lamp 120 is arranged corresponding to the hollow pattern.

Exemplarily, as shown in FIG. 3 is a schematic diagram of the placement of the LED lamp 120 and the capacitance sensing layer 130. Referring to FIG. 3, the capacitance sensing layer may be multiple, and the LED lamp 120 and the capacitance sensing layer are respectively connected to The hollow patterns are set correspondingly. Specifically, the hollow pattern can be a pattern representing a function, such as a circle, a rectangle, a triangle, a chandelier or a mushroom shape, etc., and the hollow pattern can also be a character representing a function, such as numbers, characters or symbols, etc.; The hollow pattern corresponds to the capacitance sensing layer, and the capacitance sensing layer can sense that the position of the decorative film 150 corresponding to the hollow pattern is touched, and generate a capacitance sensing signal. The hollow pattern is illuminated by the LED lamp as a backlight to present a key pattern, which enriches the display effect; the embodiment of the present invention does not specifically limit the material of the translucent film and the shape of the hollow pattern. By arranging at least one hollow pattern on the decorative film, the display effect of the capacitive touch key device with LED display function is more abundant, the single problem of the display effect of the capacitive touch key device is avoided, and the key function can be easily identified by the hollow pattern. .

Optionally, the decorative film 150 includes a translucent film 151 and a layer of opaque film 152 compounded above the translucent film; the hollow pattern is arranged on the translucent film 151, and the capacitance sensing layer The projection of 130 on the PCB board 110 completely covers the projection of the hollow pattern on the PCB board 110 .

Exemplarily, the translucent film 151 can be leather, wood grain or imitation metal film, etc.; the opaque film 152 is used to flatten the display interface, and at the same time avoid external interference to the inside of the touch key device, prolonging the touch control process. The service life of the key device. By arranging the translucent film and the opaque film with the hollow pattern, the surface effects of the capacitive touch key device can be diversified. There is little difference in the appearance of the regions, thus realizing the hidden effect of the touch buttons.

Exemplarily, the capacitance sensing layers may be multiple, and each of the capacitance sensing layers is arranged corresponding to each of the hollow patterns, which reduces the sensing area of the capacitance sensing layer and ensures the sensitivity of the capacitance sensing layer. Avoid wrongly controlling the LED lights to light up when touching a non-key position, which improves the accuracy of touch control. Exemplarily, as shown in FIG. 4 , another schematic diagram of the placement of the LED lamp and the capacitive sensing layer, referring to FIG. 4 , the multiple capacitive sensing layers are disposed around the LED lamp, and the multiple capacitive sensing layers are arranged around the LED lamp. Spaces are set between layers.

Optionally, FIG. 5 is a schematic structural diagram of another capacitive touch key device with an LED display function provided by 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, the side of the support structure close to the LED lamp includes a depression The structure is used for accommodating the LED lamp 120; the projection of the capacitance sensing layer on the PCB board does not overlap with the projection of the recessed structure on the PCB board.

Exemplarily, a plurality of the LED lamps 120 are disposed on the PCB board 110 and are located in the concave structure of the support structure, which can save space and protect the LED lamps at the same time. There may be a plurality of capacitance sensing layers, the plurality of capacitance sensing layers 130 are disposed on the PCB board 110 , and the concave structure is not disposed on one side of the support structure 140 adjacent to the capacitance sensing layer 130 .

Optionally, as shown in FIG. 6 is a schematic structural diagram of another capacitive touch key device with an LED display function provided by an embodiment of the present invention. Referring to FIG. 6 , the PCB board 110 includes a first oppositely disposed first Surface and second surface; the first surface is disposed on the side of the PCB board 110 away from the support structure 140 , and the second surface is disposed on the side of the PCB board 110 adjacent to the support structure 140 . The LED light 120 is disposed on the first surface, and the PCB board 110 is provided with a through hole, and the LED light 120 is partially embedded in the through hole; correspondingly, the capacitance sensing layer 130 is disposed on the through hole. second surface.

Exemplarily, the PCB board 110 is provided with a plurality of through holes. By placing each LED light 120 in each of the through holes, space is saved, and the LED light 120 is protected to avoid pressure on the LED light 120 . At the same time, the capacitance sensing layer 130 can be multiple, and the plurality of capacitance sensing layers 130 do not cover the through hole, which ensures the light output of the LED lamp 120 and the mechanical strength of the capacitance sensing layer 130 .

Optionally, as shown in FIG. 7 is a schematic structural diagram of another capacitive touch key device with LED display function provided by Embodiment 1 of the present invention. Referring to FIG. 7 , the PCB board 110 includes a first surface and a the second surface; the first surface is disposed on the side of the PCB board 110 away from the support structure 140 , and the second surface is disposed on the side of the PCB board 110 adjacent to the support structure 140 ; the The LED lamp 120 is disposed on the second surface, and a side of the support structure 140 close to the LED lamp 120 includes a concave structure for accommodating the LED lamp 120 ; correspondingly, the capacitance sensing layer 130 is disposed on the LED lamp 120 . the first surface.

Exemplarily, the number of the recessed structures may be one or multiple. The LED lamp 120 is disposed in the recessed structure, which further protects the LED lamp 120 and facilitates the disposition of the capacitance sensing layer 130 .

Optionally, the LED light 120 may be a side light disposed on the PCB board 110 .

Exemplarily, as shown in FIG. 8 is a partial top view of another capacitive touch button provided by the new embodiment of the present invention. Referring to FIG. 8 , the LED lights 120 are disposed on opposite sides of the capacitive sensing layer 130 , and are opposite to all the capacitive touch buttons. The hollow pattern corresponds to, for example, each hollow pattern corresponds to two LED lights 120 .

Optionally, the PCB board 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, The capacitive touch unit 111 is used to collect the capacitive signal of the capacitive sensing layer 130; the main control unit 113 is used to control the LED control unit 112 according to the capacitive signal; the LED control unit 112 is used to control the LED lights 120 .

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

Exemplarily, as shown in FIG. 9 is a schematic diagram of a partial structure of a PCB according to Embodiment 1 of the present invention. Referring to FIG. 9 , by touching a button corresponding to a hollow pattern in the decorative film 150 by a user, the capacitive sensing The layer 130 generates a capacitance sensing signal, and the capacitance sensing signal is collected by the capacitance control unit 111 and sent to the main control unit 113, and the main control unit 113 generates a capacitance sensing signal according to the received capacitance sensing signal. The LED control signal is sent to the LED control unit 112, and the LED control unit 112 is used for turning on and off the LED lamp 120 according to the LED control signal.

The technical solution of this embodiment provides a schematic structural diagram of a capacitive touch button device with an LED display function. The capacitive touch button device with an LED display function includes: a PCB board 110 ; The LED lights 120 on the PCB board 110 , the capacitance sensing layer 130 provided on the PCB board 110 , the support structure 140 provided above the PCB board 110 , and the decorative film 150 provided above the support structure 140 , so as to have LED display The display effect of the functional capacitive touch key device is more abundant, the single problem of the display effect of the capacitive touch key device is avoided, and the key function can be easily identified by the hollow pattern.

Embodiment 2

FIG. 10 is a schematic structural diagram of another capacitive touch key device with LED display function provided by Embodiment 2 of the present invention. In this embodiment, on the basis of the above embodiments, referring to FIG. 10 , the support structure 140 includes a first transparent support layer 141 and a second transparent support layer 142 , and the second transparent support layer is disposed on the first transparent support The side of the layer 141 away from the decorative film 150 ; the first transparent support layer is used to support the decorative film 150 .

Specifically, the first transparent support layer 141 is used to support the decorative film 150, and the second transparent support layer 142 is used to widen the distance between the LED lamp 120 and the decorative film 150, thereby improving the display effect .

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

Specifically, the material of the optical film 160 can be acrylic resin; the optical film 160 can make the amount of light irradiated to the decorative film 150 more, and at the same time, the light irradiated to the decorative film 150 can be more uniform, so that the The display is brighter and softer, which further improves the display effect. Each hollow pattern corresponds to at least one LED light 120 .

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

Specifically, the optical film 160 is disposed in the cavity, and the optical film is adhered to the first transparent support layer 141 through the adhesive layer, which enhances the stability of the optical film In this case, the optical film is prevented from sliding in the cavity; wherein, the adhesive layer is transparent, which increases the light transmission amount of the light emitted by the LED.

Exemplarily, the orthographic projection of the cavity on the PCB board 110 completely covers the orthographic projection of the recessed structure on the PCB board 110 , so that the orthographic projection of the optical film on the PCB board 110 The orthographic projection of the LED lamp 120 on the PCB board 110 can be completely covered, ensuring that the light emitted by the LED lamp 120 can pass through the optical film 160 and further improving the display uniformity.

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

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

Exemplarily, 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 widened, thereby further improving the display effect and increasing the Mechanical strength of the second transparent support layer.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present utility model has been described in detail through the above embodiments, the present utility model is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present utility model. Rather, the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A capacitive touch button device with an LED display function, characterized in that it comprises: a PCB board, an LED lamp arranged on the PCB board, a capacitance sensing layer arranged on the PCB board, a a support structure above the PCB board and a decorative film disposed above the support structure; Wherein, the decorative film is provided with at least one hollow pattern. 2 . The capacitive touch key device with LED display function according to claim 1 , wherein the decorative film comprises a translucent film and a layer of opaque film compounded on the translucent film; 2 . The hollow pattern is disposed on the translucent film, and the projection of the capacitance sensing layer on the PCB board completely covers the projection of the hollow pattern on the PCB board. 3 . The capacitive touch key device with LED display function according to claim 1 , wherein the LED light and the capacitive sensing layer are arranged between the PCB board and the support structure; 3 . Wherein, a side of the support structure close to the LED lamp includes a concave structure for accommodating the LED lamp; The projection of the capacitance sensing layer on the PCB board does not overlap with the projection of the recessed structure on the PCB board. 4 . The capacitive touch key device with LED display function according to claim 1 , wherein the PCB board comprises a first surface and a second surface arranged oppositely; the first surface is arranged on the a side of the PCB board away from the support structure, and the second surface is disposed on a side of the PCB board adjacent to the support structure; The LED light is disposed on the first surface, and a through hole is disposed on the PCB board, and the LED light is partially embedded in the through hole; Correspondingly, the capacitance sensing layer is disposed on the second surface. 5 . The capacitive touch key device with LED display function according to claim 1 , wherein the PCB board comprises a first surface and a second surface arranged opposite to each other; the first surface is arranged on the opposite side. 6 . a side of the PCB board away from the support structure, and the second surface is disposed on a side of the PCB board adjacent to the support structure; The LED lamp is disposed on the second surface, and a side of the support structure close to the LED lamp includes a concave structure for accommodating the LED lamp; Correspondingly, the capacitance sensing layer is disposed on the first surface. 6 . The capacitive touch key device with LED display function according to claim 1 , wherein the support structure comprises a first transparent support layer and a second transparent support layer, and the second transparent support layer is arranged on the side of the first transparent support layer away from the decorative film; The first transparent support layer is used to support the decorative film. 7 . The capacitive touch key device with LED display function according to claim 6 , wherein the second transparent support layer comprises a cavity, and the cavity is used for accommodating an optical film. 8 . 8 . The capacitive touch key device with LED display function according to claim 7 , wherein the optical film is connected to the first transparent support layer through an adhesive layer; 9 . The orthographic projection of the optical film on the PCB board completely covers the orthographic projection of the LED lamp on the PCB board. 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 . 10 . The capacitive touch key device with 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; 10 . The capacitive touch unit and the LED control unit are respectively electrically connected to the main control unit, and the capacitive touch unit is used for collecting the capacitance signal of the capacitance sensing layer; the main control unit is used for collecting the capacitance signal according to the capacitance signal Controlling an LED control unit; the LED control unit is used to control the LED lamp.

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