CN217280507U - Invisible key with light-transmitting film structure and electronic device - Google Patents
Invisible key with light-transmitting film structure and electronic device Download PDFInfo
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- CN217280507U CN217280507U CN202221089359.7U CN202221089359U CN217280507U CN 217280507 U CN217280507 U CN 217280507U CN 202221089359 U CN202221089359 U CN 202221089359U CN 217280507 U CN217280507 U CN 217280507U
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- 239000002131 composite material Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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- 230000036541 health Effects 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Abstract
The utility model relates to an invisible key and an electronic device with a light-transmitting film structure, which comprises a circuit board and a panel arranged oppositely; at least one group of photosensitive device units are arranged on the circuit board, each group of photosensitive device units comprises a light-emitting device and a light-receiving device, and the light-emitting device is used for emitting light; the light receiving device is used for receiving the light which is emitted by the light emitting device and reflected by the shielding object so as to convert the light into an electric signal; at least one first through hole is formed in the panel, and each group of photosensitive device units corresponds to each first through hole respectively; a light-permeable film is arranged on one surface of the panel, which is far away from the circuit board, so as to cover the first through hole; the light-transmittable film is transparent to light emitted from the photosensor unit and visible light. The key has the advantages of simple structure, low cost, easy cleaning and convenient use.
Description
Technical Field
The utility model relates to a key switch technical field especially relates to an invisible key and electron device with printing opacity membrane structure.
Background
With the development of society, people have higher living standard and pay more and more attention to safety and health. In daily life, common touch keys used in public cannot meet the conditions with high requirements on safety and sanitation due to the fact that the common touch keys need to be contacted. However, the existing non-contact key or the air-insulated key has the disadvantages of low waterproof and dustproof performance, difficult cleaning, complex structure, inconvenient use and higher cost.
Therefore, there is a need for a novel key assembly that is waterproof, cost-effective, and easy to use.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide an invisible button and an electronic device with a light-transmitting film structure, so as to solve the problems of the prior art, such as low waterproof performance, difficulty in cleaning, complex structure and high cost of the button switch.
In order to achieve the above object, an aspect of the present invention provides an invisible button with a light-transmitting film structure, which includes, as one embodiment, a circuit board and a panel oppositely disposed; wherein,
the circuit board is provided with at least one group of photosensitive device units, each group of photosensitive device units comprises a light-emitting device and a light-receiving device, the light-emitting device is used for emitting light, and the light-receiving device is used for receiving the light emitted by the light-emitting device and reflected by a shielding object so as to convert the light into an electric signal;
at least one first through hole is formed in the panel, and each group of photosensitive device units corresponds to each first through hole respectively;
a light-permeable film is arranged on one surface of the panel, which is far away from the circuit board, so as to cover the at least one first through hole; wherein the light-transmittable film is transparent to light emitted from the photosensor unit and visible light.
In one embodiment, the light permeable film covers a side of the panel away from the circuit board.
In one embodiment, the light-transmittable film is a metal oxide composite film.
As one embodiment, the display panel further comprises a fixing plate, wherein the circuit board, the fixing plate and the panel are sequentially stacked; wherein,
at least one group of second through holes are formed in the fixing plate, each group of second through holes are respectively arranged corresponding to each group of first through holes and each group of photosensitive device units, and each group of second through holes are used for containing the corresponding photosensitive device units.
As one of the embodiments, the panel, the fixing plate and the circuit board are correspondingly provided with connecting screw holes for fixedly connecting the panel, the fixing plate and the circuit board.
In one embodiment, the panel is a stainless steel plate; and/or the fixing plate is an acrylic plate.
As one embodiment, the key further includes a processing module and at least one voltage-dividing resistor, each light-receiving device corresponds to one voltage-dividing resistor, each light-receiving device and the corresponding voltage-dividing resistor are connected in series between a power source end and ground, and the processing module is connected between each light-receiving device and the corresponding voltage-dividing resistor, and is configured to obtain an electrical signal converted by each light-receiving device and output a control signal.
As one of the embodiments, the key further includes a first switching element, each light emitting device is connected in series with the first switching element between the power terminal and the ground, and the processing module is connected to a control terminal of the first switching element for controlling each light emitting device by controlling the first switching element.
As one embodiment, the key further comprises at least one light-emitting unit and at least one second switch element, each light-emitting unit is arranged corresponding to each group of photosensitive device units, and a surface layer corresponding to each light-emitting unit is provided with a light-transmitting area; wherein,
each second switching element is connected in series with the corresponding light emitting unit between a power terminal and ground, and the processing module is connected to a control terminal of each second switching element for controlling the corresponding light emitting unit by controlling each second switching element.
In order to achieve the above object, another aspect of the present invention provides an electronic device, including the invisible key with a light-transmissive film structure according to any one of the above embodiments.
To sum up, the invisible key and the electronic device with the light-transmitting film structure provided in the embodiments of the present invention include a circuit board and a panel arranged oppositely; at least one group of photosensitive device units are arranged on the circuit board, each group of photosensitive device units comprises a light-emitting device and a light-receiving device, and the light-emitting device is used for emitting light; the light receiving device is used for receiving the light emitted by the light emitting device and reflected by the shielding object so as to convert the light into an electric signal; at least one first through hole is formed in the panel, and each group of photosensitive device units corresponds to each first through hole respectively; a light-permeable film is arranged on one surface of the panel, which is far away from the circuit board, so as to cover the first through hole; the light-transmittable film is transparent to light emitted from the photosensor unit and visible light. The key has the advantages of simple structure, easiness in cleaning, low cost and convenience in use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic structural view of an invisible key with a light-transmitting film structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a panel of an invisible key with a light-transmissive film structure according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a fixing plate of an invisible key with a light-transmitting film structure according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an invisible key with a light-transmitting film structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
Example 1
Fig. 1 is a schematic structural view of an invisible key with a light-transmitting film structure according to an embodiment of the present invention. Fig. 2 is a schematic structural view of a panel of an invisible key with a light-transmitting film structure according to an embodiment of the present invention. Fig. 4 is a schematic circuit diagram of an invisible key with a light-transmitting film structure according to an embodiment of the present invention. As shown in fig. 1, 2 and 4, the invisible key with the light-transmissive film structure includes a circuit board 11 and a panel 12 disposed opposite to the circuit board. At least one group of photosensitive device units is disposed on the circuit board 11, each group of photosensitive device units includes a light emitting device and a light receiving device (not shown in fig. 1 and 2, please refer to fig. 4), the light emitting device IR1 is used for emitting light, and the light receiving device PT1 is used for receiving the light emitted by the light emitting device IR1 and reflected by the shielding object so as to convert the light into an electrical signal. At least one first through hole 121 is formed in the panel 12, and each group of photosensor units corresponds to each first through hole 121. A light-permeable film 13 is disposed on a surface of the panel 12 away from the circuit board 11 to cover the first through hole 121. The light-permeable film 13 is permeable to light emitted from the photosensor unit and visible light.
Specifically, the photosensor unit, which may be, for example, an infrared light photosensor unit, includes an infrared light emitting device IR1 and an infrared light receiving device PT 1. Corresponding to the photo-sensor cells on the circuit board 11, the panel 12 is provided with first through holes 121 corresponding to each photo-sensor cell (two first through holes 121 are taken as an example in fig. 2, i.e. two groups of photo-sensor cells are also on the circuit board 11).
Among them, the first through hole 121 is for the light emitted from the light emitting device IR1 of the corresponding photosensor unit to pass through the panel 12, and for the light receiving device PT1 to receive the light reflected back through an obstacle (e.g., a human body). Therefore, the first through hole 121 may include two independent sub-through holes (as shown in fig. 2), and may also be a continuous through hole, that is, the two sub-through holes in fig. 2 are connected to form a continuous through hole.
A light-permeable film 13 is disposed on a surface of the panel 12 away from the circuit board 11 to cover the first through hole 121. Through setting up the light-permeable membrane 13 of the light sum visible light that the light-permeable photosensitive device unit launches, can be on the basis of realizing optical detection, play waterproof stain, the effect of dust prevention to the messenger has the stealthy button wholeness of printing opacity membrane structure and is strong.
In one embodiment, the light permeable membrane 13 has a light transmission in the infrared range of greater than 5 percent.
Specifically, for example, the optically transparent film 13 has optical characteristics of 940nm, 7.8%, or 940nm, 10%, or the like. I.e. light of the respective wavelength and the respective light transmittance.
In one embodiment, the light transmissive film 13 has a light transmission in the visible range of less than 15 percent.
Specifically, when the light transmittance of the light-permeable film 13 in the visible light range is low, the components on the internal circuit board 11 are not easily seen through the light-permeable film 13. However, if the circuit board 11 has a backlight, and the panel 12 has a hollow area with a predetermined shape, the predetermined shape corresponding to the hollow area can be clearly seen when the LED backlight is turned on. When the LED backlight is not lit, the LED lamp inside cannot be seen clearly. It should be noted that the transmittance of light emitted from the corresponding photosensor unit is greater than the transmittance of light corresponding to visible light.
In one embodiment, the light permeable film 13 is a metal oxide composite film.
Specifically, for example, a silicon oxide composite film, an aluminum oxide composite film, a TCM coated sheet, and the like, which have respective optical characteristics.
As one of the embodiments, the light permeable film 13 covers a side of the panel 12 remote from the circuit board 11.
Fig. 3 is a schematic structural view of a fixing plate of an invisible key with a light-transmitting film structure according to an embodiment of the present invention. As shown in fig. 1 and 3, in one embodiment, the invisible key with the light-transmissive film structure further includes a fixing plate 14, and the circuit board 11, the fixing plate 14 and the panel 12 are sequentially stacked; wherein,
at least one second through hole 141 is disposed on the fixing plate 14, each second through hole 141 is disposed corresponding to each first through hole 121 and each set of photo-sensor units, and each set of second through holes 141 is used for accommodating the corresponding photo-sensor unit.
Specifically, the circuit board 11 can be better limited by providing the fixing plate 14, wherein at least one second through hole 141 is provided on the fixing plate 14, and each second through hole 141 is respectively provided corresponding to each first through hole 121. Specifically, referring to fig. 2 in combination, the second through hole 141 of the fixing plate 14 corresponds to the first through hole 121 of the panel 12, but the size of the second through hole 141 may be larger than the size of the first through hole 121, or may be equal to the size of the first through hole 121. And may be smaller than the first through hole 121 in conformity with the size of the photosensitive device unit on the circuit board 11. And the first through hole 121 and the second through hole 141 are not limited to have the same shape without affecting the emission panel 12 of light of the photosensor unit and receiving reflected light.
In one embodiment, the panel 12, the fixing plate 14 and the circuit board 11 are respectively provided with a corresponding connection screw hole for fixedly connecting the panel 12, the fixing plate 14 and the circuit board 11.
In one embodiment, the faceplate 12 is a stainless steel plate; and/or, the fixed plate 14 is an acrylic plate.
Fig. 4 is a schematic circuit diagram of an invisible key with a light-transmitting film structure according to an embodiment of the present invention. Since the circuit corresponding to each photosensitive device cell is the same, only the circuit portion corresponding to one photosensitive device cell is shown in fig. 4. As shown in fig. 4, in an embodiment, the invisible key with the light-transmitting film structure further includes a processing module 15 and a voltage dividing resistor R, the light-receiving device PT1 and the voltage dividing resistor R are connected in series between the power terminal VCC and the ground, and the processing module 15 is connected between the light-receiving device PT1 and the voltage dividing resistor R, and is configured to obtain an electrical signal converted by the light-receiving device PT1 and output a control signal.
As shown in fig. 4, in an embodiment, the invisible key with the light-transmissive film structure further includes a first switching element T1, the light emitting device IR1 and the first switching element T1 are connected in series between the power supply terminal VCC and the ground, and the processing module 15 is connected to the control terminal of the first switching element T1 for controlling the light emitting device IR1 by controlling the first switching element T1.
Specifically, the first switching element T1 may be a switching element such as a MOS transistor or a triode, and is illustrated as an NMOS transistor in fig. 4, the light emitting device IR1 and the NOMS transistor are connected in series between the power supply terminal VCC and the ground, and the processing module outputs a pulse signal to intermittently turn on the NMOS transistor so that the light emitting device IR1 intermittently emits light, which may further save energy.
As shown in fig. 4, in an embodiment, the invisible key with the light-transmissive film structure further includes at least one light-emitting unit D1 and at least one second switch element T2, each group of light-emitting units is respectively disposed corresponding to each group of photosensitive device units, a hollow-out area 122 with a preset shape is disposed in an area of the panel 12 corresponding to each group of light-emitting units, and the shapes of the hollow-out areas 122 corresponding to each group of light-emitting units are different, so that a user can identify keys with different functions. Optionally, the area of the fixing plate 14 corresponding to each group of light emitting units is provided with a corresponding third through hole 142. Wherein,
the second switching element T2 is connected in series with the light emitting unit D1 between the power supply terminal VCC and the ground, and the processing module 15 is connected to a control terminal of the second switching element T2 for controlling the light emitting unit D1 by controlling the second switching element T2.
Specifically, referring to fig. 2 and 3 in combination, the light emitting unit D1 may include at least one LED, and the corresponding light emitting unit D1 is disposed corresponding to the photosensor unit. When the processing module 15 determines that the first through hole 121 is blocked, the light emitting unit D1 is turned on, so that a pattern of a preset shape is displayed on the light permeable film 13, so that a user can know whether the key is activated or not by turning on and off the light emitting unit D1. Similarly, the second switching element T2 may be a switching element such as a MOS transistor or a transistor, and is illustrated as an NMOS transistor in fig. 4.
It should be noted that the electronic devices in the present embodiment may be on the circuit board 11.
To sum up, the invisible key with the light-transmitting film structure provided in the embodiment of the present invention comprises a circuit board and a panel arranged oppositely; at least one group of photosensitive device units are arranged on the circuit board, each group of photosensitive device units comprises a light-emitting device and a light-receiving device, and the light-emitting device is used for emitting light; the light receiving device is used for receiving the light emitted by the light emitting device and reflected by the shielding object so as to convert the light into an electric signal; at least one first through hole is formed in the panel, and each group of photosensitive device units corresponds to each first through hole respectively; a light-permeable film is arranged on one surface of the panel, which is far away from the circuit board, so as to cover the first through hole; wherein the light-permeable film is permeable to light emitted from the photosensor unit and visible light. The key has the advantages of simple structure, easiness in cleaning, low cost and convenience in use.
The embodiment of the utility model provides an electron device is still provided, including the stealthy button that has light-transmitting film structure of any above-mentioned embodiment.
The electronic devices include, but are not limited to: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, processor, etc. Those skilled in the art will appreciate that the electronic device may also include a power source (e.g., a battery) to power the various components, which may be logically connected to the processor through a power management system.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Claims (10)
1. An invisible key with a light-transmitting film structure is characterized by comprising a circuit board and a panel which is arranged oppositely; wherein,
the circuit board is provided with at least one group of photosensitive device units, each group of photosensitive device units comprises a light-emitting device and a light-receiving device, the light-emitting device is used for emitting light, and the light-receiving device is used for receiving the light emitted by the light-emitting device and reflected by a shielding object so as to convert the light into an electric signal;
at least one first through hole is formed in the panel, and each group of photosensitive device units corresponds to each first through hole respectively;
a light-permeable film is arranged on one surface of the panel, which is far away from the circuit board, so as to cover the at least one first through hole; wherein the light-transmittable film is transparent to light emitted from the photosensor unit and visible light.
2. The invisible key with the light transmissive film structure as claimed in claim 1, wherein the light transmissive film covers a side of the panel away from the circuit board.
3. The invisible key with the light transmissive film structure of claim 1, wherein the light transmissive film is a metal oxide composite film.
4. The invisible key with the light-transmitting film structure according to claim 1, further comprising a fixing plate, wherein the circuit board, the fixing plate and the panel are sequentially stacked; wherein,
at least one group of second through holes are formed in the fixing plate, each group of second through holes are respectively arranged corresponding to each group of first through holes and each group of photosensitive device units, and each group of second through holes are used for containing the corresponding photosensitive device units.
5. The invisible key with the light-transmitting film structure of claim 4, wherein the panel, the fixing plate and the circuit board are correspondingly provided with connecting screw holes for fixedly connecting the panel, the fixing plate and the circuit board.
6. The invisible key with the light transmissive film structure of claim 4, wherein the faceplate is a stainless steel plate; and/or the fixing plate is an acrylic plate.
7. The invisible key with the light-transmitting film structure according to claim 1, wherein the key further comprises a processing module and at least one voltage-dividing resistor, each light-receiving device corresponds to one voltage-dividing resistor, each light-receiving device and the corresponding voltage-dividing resistor are connected in series between a power supply terminal and ground, and the processing module is connected between each light-receiving device and the corresponding voltage-dividing resistor, and is configured to acquire an electrical signal converted by each light-receiving device and output a control signal.
8. The invisible key with the light transmissive film structure of claim 7, wherein the key further comprises a first switching element, each of the light emitting devices is connected in series with the first switching element between the power terminal and the ground, and the processing module is for controlling each of the light emitting devices by controlling the first switching element by connecting the control terminal of the first switching element.
9. The invisible key with the light-transmitting film structure according to claim 7, wherein the circuit board is further provided with at least one group of light-emitting units and at least one second switch element, each group of light-emitting units is respectively arranged corresponding to each group of photosensitive device units, and a panel area corresponding to each group of light-emitting units is provided with a hollow-out area with a preset shape; wherein,
each second switching element is connected in series with the corresponding light emitting unit between a power supply terminal and ground, and the processing module is connected to a control terminal of each second switching element for controlling the corresponding light emitting unit by controlling each second switching element.
10. An electronic device comprising the invisible key having a light transmissive film structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221089359.7U CN217280507U (en) | 2022-05-07 | 2022-05-07 | Invisible key with light-transmitting film structure and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221089359.7U CN217280507U (en) | 2022-05-07 | 2022-05-07 | Invisible key with light-transmitting film structure and electronic device |
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| Publication Number | Publication Date |
|---|---|
| CN217280507U true CN217280507U (en) | 2022-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221089359.7U Active CN217280507U (en) | 2022-05-07 | 2022-05-07 | Invisible key with light-transmitting film structure and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217280507U (en) |
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- 2022-05-07 CN CN202221089359.7U patent/CN217280507U/en active Active
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