CN216597354U - Key module, keyboard and interactive flat panel - Google Patents
Key module, keyboard and interactive flat panel Download PDFInfo
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- CN216597354U CN216597354U CN202122751934.7U CN202122751934U CN216597354U CN 216597354 U CN216597354 U CN 216597354U CN 202122751934 U CN202122751934 U CN 202122751934U CN 216597354 U CN216597354 U CN 216597354U
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Abstract
The utility model discloses a key module, a keyboard and an interactive flat plate, wherein the key module comprises a key main body and a light source assembly which are arranged at intervals, the key main body comprises a metal film, a light conduction assembly and a first transparent substrate, the light conduction assembly and the first transparent substrate are respectively arranged at two opposite sides of the metal film, one side of the first transparent substrate, which is far away from the metal film, is a touch surface, the light conduction assembly is used for conducting light emitted by the light source assembly to the metal film, the metal film is used for exciting surface plasma waves, and a light intensity detection assembly is arranged in the first transparent substrate and is used for detecting the intensity of the surface plasma waves in the first transparent substrate. The key module provided by the utility model judges whether a medium touches or not by detecting the intensity change of the surface plasma wave, so that the input sensitivity of the key module is high, and the metal film has stable property and long service life.
Description
Technical Field
The utility model relates to the technical field of keys, in particular to a key module, a keyboard and an interactive panel.
Background
The existing keys are divided into mechanical keys and capacitive keys. Mechanical button includes metal shrapnel, spring and presses the cap etc. and long-term back spring elasticity that presses descends leads to button sensitivity to reduce, and metal shrapnel easily receives external environment's erosion, influences button life. The capacitor key is used for detecting whether the key is pressed or not by utilizing the charge and discharge of a capacitor, but the design requirement is high, certain requirements are required on parasitic capacitance in the PCB layout, and otherwise, the sensitivity is influenced.
SUMMERY OF THE UTILITY MODEL
One object of an embodiment of the present invention is to: the key module is high in touch sensitivity and long in service life.
In order to achieve the purpose, the embodiment of the utility model adopts the following technical scheme:
in a first aspect, a key module is provided, including key main body and light source subassembly that the interval set up, the key main body includes metallic film, light conduction subassembly and first transparent substrate, the light conduction subassembly with first transparent substrate sets up respectively the relative both sides of metallic film, first transparent substrate deviates from one side of metallic film is the touch surface, the light conduction subassembly be used for with the light conduction that the light source subassembly sent gives the metallic film, the metallic film is used for exciting out surface plasma wave, be equipped with light intensity detection subassembly in the first transparent substrate, be used for detecting in the first transparent substrate surface plasma wave intensity.
Has the beneficial effects that: the touch surface of the first transparent substrate is used as the touch surface of the whole key module and is touched by a user, light emitted by the light source assembly reaches the surface of the metal film after passing through the light conduction assembly, surface plasma waves are excited on the surface of the metal film, and the light intensity detection assembly in the first transparent substrate detects the intensity of the surface plasma waves in the first transparent substrate. When no medium touches the touch surface of the first transparent substrate, the intensity of the surface plasma wave detected by the light intensity detection assembly is a first intensity; when a medium (such as a finger of a user) touches the touch surface of the first transparent substrate, due to the unevenness of the surface of the medium, the surface plasma wave is scattered when encountering the medium, the intensity of the surface plasma wave detected by the light intensity detection assembly is the second intensity, and the second intensity is different from the first intensity in value, so that whether the medium touches the touch surface of the first transparent substrate can be judged through the intensity change of the surface plasma wave detected by the light intensity detection assembly. Due to the characteristics of the surface plasma wave, namely the surface plasma wave is transmitted along the surface of the metal film and exponentially attenuated in the direction perpendicular to the transmission direction, and the transmission distance is localized in the size of the sub-wavelength, the detection sensitivity is high, whether the key module is touched or not can be judged quickly and effectively, namely the input sensitivity is high, the metal film is stable in property, not easy to be corroded by the external environment, and the service life is long.
Another object of an embodiment of the present invention is to: the keyboard is high in touch sensitivity, not prone to being corroded by the external environment, long in service life and free of considering the problem of PCB layout.
In order to achieve the purpose, the embodiment of the utility model adopts the following technical scheme:
in a second aspect, a keyboard is provided, comprising a plurality of key modules as described above.
Has the advantages that: the keyboard comprises a plurality of key modules, the touch sensitivity is high, the service life is long, and the PCB layout does not need to be considered. Illustratively, the number and arrangement of the key modules are the same as those of the keys on the keyboard in the prior art, so that the user can keep the existing input operation habit. Of course, the number and arrangement of the key modules can be selected according to the use scene of the keyboard.
It is yet another object of embodiments of the utility model to: the interactive flat plate is provided, and the key module is high in touch sensitivity and long in service life.
In order to achieve the purpose, the embodiment of the utility model adopts the following technical scheme:
in a third aspect, an interactive flat plate is provided, which includes the key module as described above, and further includes a frame and a functional module, where the key main body of the key module is disposed on the frame and electrically connected to the functional module, and the light source assembly of the key module is disposed inside the frame and/or outside the frame.
Has the advantages that: the key module is arranged on the frame and is electrically connected with the functional module. The touch key module can trigger the corresponding function of the function module. The touch sensitivity of the key module is high, the service life is long, and the use experience of a user is improved. Illustratively, the functional module is a power module, and the key module is electrically connected with the power module; when the key module is touched, the key module sends a trigger signal to a controller of the interactive flat plate, the controller controls the power supply module to be electrified, and a display screen of the interactive flat plate is bright; when the key module is triggered again, the key module sends a trigger signal to the controller of the interactive panel again, the controller controls the power module to be powered off, and the display screen of the interactive panel is turned off. Or the functional module is a loudspeaker module, the key module is electrically connected with the loudspeaker module, when the key module is touched, the key module sends a trigger signal to the controller of the interactive flat plate, and the controller controls the volume of the loudspeaker module to increase or decrease.
Drawings
The utility model is explained in more detail below with reference to the figures and examples.
Fig. 1 is a schematic diagram of a key body according to an embodiment of the utility model.
Fig. 2 is a schematic diagram of a key module according to an embodiment of the utility model.
Reference numerals:
1. a metal film; 2. a light source assembly; 3. a light-conducting component; 31. a prism; 32. a second transparent substrate; 33. a refractive index matching fluid; 4. a first transparent substrate; 5. a light intensity detection component; 6. an adjusting member.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, the key module provided by the present invention includes a key main body and a light source assembly 2, the key main body includes a metal film 1, a light conducting assembly 3 and a first transparent substrate 4. Wherein, the light conduction assembly 3 and the first transparent substrate 4 are respectively arranged at two opposite sides of the metal film 1. One side of the first transparent substrate 4, which is away from the metal film 1, is a touch surface for a user to touch. The light conduction assembly 3 is used for conducting the light emitted by the light source assembly 2 to the metal film 1, and the metal film 1 is used for exciting surface plasma waves. A light intensity detecting member 5 is provided in the first transparent substrate 4 for detecting the intensity of the surface plasmon wave in the first transparent substrate 4.
It is known to those skilled in the art that a large amount of free electrons exist on the surface of the metal film 1, and when an electromagnetic wave acts on the metal film 1, the electromagnetic wave and the surface electrons of the metal film 1 are coupled, so as to generate an electromagnetic wave propagating along the surface of the metal film 1, i.e., a surface plasmon wave. The propagation direction of the surface plasmon wave is parallel to the metal film 1 and the dielectric surface, and the propagation direction of the surface plasmon wave is perpendicular to the propagation direction of the surface plasmon wave, the exponential attenuation propagation is presented, and the propagation distance is localized in the sub-wavelength size, so that the sensitivity is high, and nano-scale particles can be detected.
Specifically, in the present embodiment, light (indicated by a dotted arrow in fig. 2) emitted from the light source assembly 2 reaches the metal film 1 through the light conduction assembly 3, so that a surface plasmon wave is excited on the surface of the metal film 1, and the excited surface plasmon wave propagates along the surface of the metal film 1. Since the thicknesses of the metal film 1 and the first transparent substrate 4 are both in the nanometer order, and the amplitude of the surface plasmon wave is larger than the sum of the thicknesses of the metal film 1 and the first transparent substrate 4, the surface plasmon wave also exists in the first transparent substrate 4 and in a region perpendicular to the touch surface thereof by a certain distance (the distance is in the nanometer order), and the intensity of the surface plasmon wave in the first transparent substrate 4 is detected by the light intensity detection assembly 5 in the first transparent substrate 4. When no medium touches the touch surface of the first transparent substrate 4, the intensity of the surface plasmon wave detected by the light intensity detection assembly 5 is a first intensity; when a medium (e.g., a finger of a user) touches the touch surface of the first transparent substrate 4, the surface plasmon wave may be scattered when encountering the medium due to the unevenness of the surface of the medium, and the intensity of the surface plasmon wave detected by the light intensity detection assembly 5 is the second intensity. It is understood that the first intensity and the second intensity have different values, and thus whether the medium touches the touch surface of the first transparent substrate 4 can be determined by the intensity variation of the surface plasmon wave detected by the light intensity detection assembly 5. Illustratively, when the difference between the first intensity and the second intensity reaches a preset difference, it indicates that the touch surface of the first transparent substrate 4 is touched.
In the key module provided in this embodiment, the touch surface of the first transparent substrate 4 is the touch surface of the entire key module, and is used for a user to touch, light emitted by the light source assembly 2 reaches the surface of the metal film 1 after passing through the light conduction assembly 3, and surface plasma waves are excited on the surface of the metal film 1, and the light intensity detection assembly 5 in the first transparent substrate 4 detects intensity changes of the surface plasma waves in the first transparent substrate 4, so as to determine whether the first transparent substrate 4 is touched. Due to the characteristics of the surface plasma wave, namely the surface plasma wave is transmitted along the surface of the metal film 1 and is exponentially attenuated in the direction perpendicular to the transmission direction, and the transmission distance is localized in the sub-wavelength size, the detection sensitivity is high, whether the key module is touched or not can be judged quickly and effectively, namely the input sensitivity is high, the metal film 1 is stable in property, is not easy to be corroded by the external environment and is long in service life.
Exemplarily, the light source assembly 2 comprises an LED lamp. The light intensity detection component 5 comprises a photoresistor or a light intensity sensor, the measurement precision is high, and the cost is low.
Optionally, the first transparent substrate 4 is made of glass or other transparent materials, so as to ensure uniform propagation of the surface plasmon wave therein. Because the thickness of the whole key main body is small (in nanometer or micrometer level), in order to avoid the key main body from generating cracks or even breaking due to overlarge touch force of a user, the first transparent substrate 4 can be made of toughened glass to improve the strength of the key main body, or the touch surface of the first transparent substrate 4 is poured with packaging glue to improve the strength of the key main body. Of course, the first transparent substrate 4 may be made of other materials with high strength, or may be surface-treated to improve the strength, and is not limited herein.
Alternatively, the metal film 1 may be obtained by spraying metal powder on the side of the first transparent substrate 4 facing away from the touch surface thereof. Specifically, the metal powder may be sprayed on the first transparent substrate 4 by plasma sputtering, so that the thickness of the formed metal film 1 is uniform. Illustratively, the metal powder is gold powder.
Optionally, the light conducting assembly 3 includes a prism 31 and a second transparent substrate 32, the second transparent substrate 32 is disposed between the prism 31 and the metal film 1, and the light emitted from the light source assembly 2 sequentially passes through the prism 31 and the second transparent substrate 32 and then reaches the metal film 1. Light beams emitted by the light source assembly 2 are refracted by the prism 31 and then reach the metal film 1 through the second transparent substrate 32, so that incident light incident on the metal film 1 meets a certain incident angle, and surface plasma waves are excited.
Illustratively, the prism 31 is a triangular prism 31. As shown in the figure, the triangular prism 31, the second transparent substrate 32 and the metal film 1 constitute a krevelman device, and the incident angle of the light emitted by the light source assembly 2 on the triangular prism 31 is adjusted to be theta, so that the surface plasma wave is excited. When the incident angle theta of the light incident on the surface of the metal film 1 satisfies the formula (1), a component of the incident light is obtained at the interface between the metal film 1 and the dielectric medium, and the electromagnetic wave obtained by coupling is the surface plasma wave.
ksp＝knpsinθ (1)
Wherein k isspIs the wave vector of the surface plasma wave, k is the wave vector of the incident wave, npIs the refractive index of the triangular prism 31. k is a radical ofspThe following can be obtained from equation (2):
ksp＝(ω/c)[εmεd/(εm+εd)]1/2 (2)
where ω is the angular frequency of the incident light, c is the speed of light, εmAnd εdThe dielectric constants of the metal film 1 and the dielectric or air, respectively.
Optionally, an index matching fluid 33 is disposed between the light-emitting surface of the prism 31 and the second transparent substrate 32, so that the propagation directions of the light emitted by the light source assembly 2 in the prism 31 and the second transparent substrate 32 are the same, thereby ensuring the incident angle of the incident light incident on the surface of the metal film 1.
Optionally, the second transparent substrate 32 is made of glass or other transparent materials, so as to ensure stable propagation of the light emitted from the light source assembly 2 therein.
The assembly sequence of the key module is as follows:
mounting a second transparent substrate 32 on the prism 31 with an index matching fluid 33 preferably applied therebetween to form a first module; at the same time, the metal film 1 is molded on the side of the first transparent substrate 4 facing away from its touch surface to form a second module. Thereafter, the first module and the second module are assembled.
The key module provided by the embodiment has high input sensitivity, and the metal film 1 has stable property, is not easy to be corroded by the external environment and has long service life.
Example two:
the keyboard provided by the utility model comprises a plurality of key modules in the first embodiment, the keyboard has high input sensitivity, long service life and low design requirement, and the layout problem of a PCB (printed circuit board) does not need to be considered. Illustratively, the number and arrangement of the key modules are the same as those of the keys on the keyboard in the prior art, so that the user can keep the existing input operation habit. Of course, the number and arrangement of the key modules can be selected according to the use scene of the keyboard.
Optionally, the keyboard further comprises a body, wherein a plurality of mounting holes are formed in the body, a key main body of the key module is arranged in each mounting hole, and the light source assemblies 2 of the key modules are arranged on one side of the key main body at intervals. A plurality of key main bodies are integrated on the body to form a keyboard, so that the keyboard can be conveniently taken and placed and moved or can be arranged on other carriers (such as a conference room desktop).
In another embodiment, the main body is provided with a first mounting cavity, the mounting hole is communicated with the first mounting cavity, the light source assembly 2 is arranged in the first mounting cavity, light emitted by the light source assembly 2 can reach the light conduction assembly 3, and finally reaches the metal film 1 through the light conduction assembly 3. Set up light source subassembly 2 in first installation intracavity, light source subassembly 2 inlays the dress in this body promptly, as built-in light source (the light source subassembly 2 that the lower left corner shows in figure 2), avoids light source subassembly 2 to receive external environment's erosion, improves light source subassembly 2's life.
In another embodiment, a first mounting cavity is formed in the body, the mounting hole is communicated with the first mounting cavity, the light source assembly 2 is disposed outside the body, a first light-transmitting area is formed in the body, and light emitted by the light source assembly 2 enters the first mounting cavity through the first light-transmitting area, so that the light can reach the light-conducting assembly 3. The light source assembly 2 is arranged outside the body and is used as an external light source (the light source assembly 2 shown at the upper left corner in the figure 2), so that the light source assembly 2 is convenient to maintain and replace. It can be understood that, at this moment, the indoor light source can be used as the light source component 2, that is to say, the indoor light source can be used as the light source of the keyboard besides the illumination, and the light source component 2 does not need to be additionally arranged, and meanwhile, the volume of the keyboard can be reduced, and the processing technology of the keyboard can be simplified.
Illustratively, the first light-transmitting area of the body is made of a transparent material (such as glass) so as to realize light transmission of the first light-transmitting area; or the whole body is made of transparent materials (such as glass), so that the uniform transmission of light in the body is ensured, and the processing technology is simple. Or, first light trap is including setting up the first light trap on the body, first light trap and first installation cavity intercommunication, and the light that light source subassembly 2 sent enters into first installation cavity by first light trap to make light can reach light conduction subassembly 3.
Preferably, the body may be provided with an adjusting member 6 such as a lens or a prism for adjusting the propagation direction of the light emitted from the light source assembly 2 (external light source) in the body, so as to ensure the incident angle of the incident light conducting assembly 3 and the metal film 1, thereby exciting the surface plasma wave.
When whole body is all printing opacity, can follow the whole circumference interval of body and set up a plurality of light source subassemblies 2, perhaps set up light source subassembly 2 along the relative both sides of body at least, guarantee that the light that light source subassembly 2 sent can finally reach every metal film 1.
In another embodiment, a first installation cavity is formed in the main body, the installation hole communicates with the first installation cavity, part of the light source assembly 2 is disposed in the first installation cavity, and part of the light source assembly 2 is disposed outside the main body, a first light-transmitting area is disposed on the main body, and light emitted by the light source assembly 2 disposed outside the main body enters the first installation cavity through the first light-transmitting area, so that the light can reach the light-conducting assembly 3 and finally reach the metal film 1. That is to say, the light source assembly 2 includes built-in light source and external light source, can open built-in light source and external light source simultaneously, guarantees that light can reach every metal film 1, or, when external light source's light is more weak or built-in light source damages, the normal use of keyboard can be guaranteed to another light source that the function is normal.
Optionally, the touch surface of the first transparent substrate 4 includes a first area and a second area, the first area is a transparent area, the second area is an opaque area, the light intensity detection assembly 5 is located in the first area, the second area is provided with key identifiers, and the key identifiers in each second area are different. The first area is used for being touched by a user, and the light intensity detection assembly 5 in the first area detects the intensity of the surface plasma wave in the first area so as to judge whether the key module is touched. The key identifications are used for representing the input information represented by each key main body, the input information represented by each key main body is different, so that each key identification is also different, and a user identifies the input information represented by the key main body through the key identifications on the second area. Illustratively, a plurality of key main bodies are arranged according to the arrangement mode of keys on the existing keyboard, and the key identification on each key main body is also the same as the identification (including English letters, numbers and the like) on the keys in the existing keyboard, so that a user can conveniently check, recognize and keep the existing input operation habit.
The key identifier may be formed in the second area of the first transparent substrate 4 by engraving, or the key identifier may be formed on a film, and the film is adhered to the second area of the first transparent substrate 4.
The touch surface of the first transparent substrate 4 may be rectangular, and the second area is located at one corner or the middle of the rectangle, and is the same as the position of the mark on the key in the existing keyboard, so that the user can conveniently check and recognize the mark.
The keyboard provided by the embodiment has the advantages of high input sensitivity, long service life and low design requirement, and the layout problem of a PCB (printed circuit board) does not need to be considered.
Example three:
the difference from the second embodiment is that the keyboard provided by the utility model comprises a supporting piece, wherein a second installation cavity and a first opening communicated with the second installation cavity are arranged on the supporting piece, a body is arranged in the first opening, and a light source component 2 and the body are arranged at an interval.
The body is arranged in the first installation cavity, and the keyboard is embedded and installed on the supporting piece. Illustratively, the supporting member may be a table top of a conference room, and the keyboard is mounted on the table top, so that the use is more convenient for users. Specifically, when the input operation is not required, the light source assembly 2 is turned off, and the keyboard is used as a part of the desktop. When an input operation is required, the light source assembly 2 is opened, and a user sits on the seat and directly touches the corresponding keyboard main body to perform the input operation. The keyboard further comprises a controller, the controller receives the light intensity signals detected by the light intensity detection components 5, and after a certain key body is judged to be touched according to the change of the light intensity signals, the controller sends signals to an interactive panel in a conference room, and the interactive panel displays input information represented by the touched key body. Illustratively, signals sent by the controller can be transmitted to the interaction panel through the wireless module, and wiring is reduced. Compared with the prior art that the user needs to leave the seat and walk to the interactive panel to call out the system keyboard, the keyboard provided by the utility model does not need to walk in a conference room, is more convenient and quick to use, has high input sensitivity and is good in use experience. Compared with the existing wired keyboard, the keyboard provided by the utility model can effectively reduce wiring and has long service life. Compared with the existing wireless keyboard, the keyboard provided by the utility model can save the arrangement of a USB interface, a battery and the like.
Optionally, the touch surface of the first transparent substrate 4 is flush with the surface of the support member, so that the appearance of the desktop is not affected, and the whole appearance is more attractive. Of course, in other embodiments, the touch surface of the first transparent substrate 4 may also extend out of the support member through the first opening, which is not limited herein.
In another embodiment, the light source module 2 is disposed in the second installation cavity, and the light emitted from the light source module 2 can reach the light conducting module 3, and finally reach the metal film 1 through the light conducting module 3. Light source subassembly 2 sets up in the second installation cavity, and as built-in light source, avoid light source subassembly 2 to receive external environment's erosion, improve light source subassembly 2's life.
In another embodiment, the light source module 2 is disposed outside the supporting member, and the body and/or the supporting member is provided with a second light-transmitting region, through which light emitted from the light source module 2 enters the second mounting cavity, so that light can reach the light-conducting module 3 and finally reach the metal film 1 through the light-conducting module 3. The light source assembly 2 is arranged outside the supporting piece and is used as an external light source, so that the light source assembly 2 is convenient to maintain and replace. It can be understood that, at this moment, the indoor light source can be used as the light source component 2, that is to say, the indoor light source can be used as the light source of the keyboard besides the illumination, and the light source component 2 does not need to be additionally arranged, and meanwhile, the volume of the keyboard can be reduced, and the processing technology of the keyboard can be simplified.
Specifically, when the second light-transmitting area is disposed on the supporting member, the second light-transmitting area of the supporting member is made of a transparent material (such as glass) to realize light transmission of the second light-transmitting area, and of course, the whole supporting member may also be made of a transparent material to realize light transmission of the whole supporting member; and/or, the second printing opacity district is for setting up the second light trap on support piece, second light trap and second installation cavity intercommunication, and the light that light source subassembly 2 sent enters into the second installation cavity through the second printing opacity district to can reach light conduction subassembly 3.
When the second light-transmitting area is arranged on the body, the second light-transmitting area of the body is made of transparent materials (such as glass) so as to realize the light transmission of the second light-transmitting area, and certainly, the whole body can also be made of transparent materials so as to realize the light transmission of the whole body; and/or, the second light trap is for setting up the second light trap on the body, second light trap and second installation cavity intercommunication, and the light that light source subassembly 2 sent enters into the second installation cavity through second light trap to can reach light conduction subassembly 3.
When the support piece and the body are both provided with the second light-transmitting area, the second light-transmitting area comprises a first sub light-transmitting area on the support piece and a second sub light-transmitting area on the body. The first sub-light-transmitting area on the support is made of transparent materials; and/or the first sub-light-transmitting area comprises a second light-transmitting hole arranged on the support piece, and the second light-transmitting hole is communicated with the second installation cavity. The second sub-light-transmitting area of the body is made of transparent materials; and/or the second sub-light-transmitting area comprises a second light-transmitting hole arranged on the body, and the second light-transmitting hole is communicated with the second installation cavity.
Example four:
the utility model provides an interactive flat plate, which comprises a key module (the reference numerals are shown in the attached figures 1 and 2) in the first embodiment, a frame and a functional module, wherein a key main body 1 of the key module is arranged on the frame and is electrically connected with the functional module, and a light source assembly 2 of the key module is arranged in the frame and/or outside the frame. The touch key module can trigger the corresponding function of the function module. The touch sensitivity of the key module is high, the service life is long, and the use experience of a user is improved.
Illustratively, the functional module is a power module, and the key module is electrically connected with the power module; when the key module is touched, the key module sends a trigger signal to a controller of the interactive flat plate, the controller controls the power supply module to be electrified, and a display screen of the interactive flat plate is bright; when the key module is triggered again, the key module sends a trigger signal to the controller of the interactive panel again, the controller controls the power module to be powered off, and the display screen of the interactive panel is turned off. Or the functional module is a loudspeaker module, the key module is electrically connected with the loudspeaker module, when the key module is touched, the key module sends a trigger signal to the controller of the interactive flat plate, and the controller controls the volume of the loudspeaker module to increase or decrease. Of course, the functional module may also be a microphone module or a camera module, and the like, which is not limited herein.
The interactive flat plate further comprises a display screen, and the frame is arranged around the periphery of the display screen. For example, the display screen is rectangular, correspondingly, the frame is a rectangular frame, and the key module may be disposed at a corner of the rectangular frame or a middle portion of a side edge, and the like, which is not limited herein.
In this embodiment, the light source assembly 2 of the key module is disposed in the frame. Specifically, be provided with the third installation cavity on the frame and with the second opening of third installation cavity intercommunication, the button main part sets up light source component 2 and sets up in the second installation cavity in the second opening, realizes that whole button module inlays on the frame and establishes the installation. The second opening part is provided with the light-transmitting ring around the key main body, and partial light that light source subassembly 2 sent does not reach metal film 1 through light conduction subassembly 2, but jets out the second opening through the light-transmitting ring, and the colour of the light that light source subassembly 2 sent is variable, and the user's accessible is observed the colour of the light of light-transmitting ring department, comes the state of discernment mutual dull and stereotyped. That is, the light source unit 2 also functions as an indicator lamp in addition to the light source. Exemplarily, the light source assembly 2 is an LED lamp. The light-transmitting ring is made of transparent material (such as glass).
Specifically, the interactive flat panel further includes a circuit board, and a program for controlling the light emitting color of the light source assembly 2 is provided on the circuit board. When the interactive flat plate is in a first state, the circuit board controls the light source component 2 to emit light with a first color; when the interactive flat plate is in the second state, the circuit board controls the light source assembly 2 to emit light of the second color, which is the prior art and is not described in detail.
Claims (12)
1. The utility model provides a key module, its characterized in that, includes key main part and the light source subassembly that the interval set up, the key main part includes metallic film, light conduction subassembly and first transparent substrate, the light conduction subassembly with first transparent substrate sets up respectively the relative both sides of metallic film, first transparent substrate deviates from one side of metallic film is the touch surface, the light conduction subassembly be used for with the light conduction that the light source subassembly sent gives the metallic film, the metallic film is used for arousing surface plasma wave, be equipped with light intensity detection subassembly in the first transparent substrate, be used for detecting in the first transparent substrate surface plasma wave intensity.
2. The key module of claim 1, wherein the light-conducting assembly comprises a prism and a second transparent substrate, the second transparent substrate is disposed between the prism and the metal film, and the light emitted from the light source assembly sequentially passes through the prism and the second transparent substrate and then reaches the metal film.
3. A keyboard comprising a plurality of key modules according to claim 1 or 2.
4. The keyboard as claimed in claim 3, wherein the keyboard comprises a body, the body is provided with a plurality of mounting holes, each mounting hole is provided with a key main body of the key module, and the light source assemblies of the key modules are arranged on one side of the key main bodies at intervals.
5. The keyboard according to claim 4, wherein a first mounting cavity is arranged in the body, and the mounting hole is communicated with the first mounting cavity;
the light source assembly is arranged in the first installation cavity, and light emitted by the light source assembly can reach the light conduction assembly; and/or the light source assembly is arranged on the outer side of the body, a first light-transmitting area is arranged on the body, and light emitted by the light source assembly enters the first installation cavity through the first light-transmitting area so that light energy can reach the light conduction assembly.
6. The keyboard as claimed in claim 4, wherein a first mounting cavity is disposed in the body, the mounting hole communicates with the first mounting cavity, the light source assembly is disposed outside the body, the body is disposed with a first light-transmitting region, and light emitted from the light source assembly enters the first mounting cavity through the first light-transmitting region, so that the light can reach the light-conducting assembly;
the first light-transmitting area of the body is made of transparent materials; and/or, first printing opacity district including set up in first printing opacity hole on the body, first printing opacity hole with first installation cavity intercommunication.
7. The keyboard of claim 4, comprising a support member, wherein the support member is provided with a second mounting cavity and a first opening communicating with the second mounting cavity, the body is disposed in the first opening, the light source assembly is disposed in the second mounting cavity, and light emitted by the light source assembly can reach the light conducting assembly.
8. The keyboard according to claim 4, comprising a support member, wherein the support member has a second mounting cavity and a first opening communicating with the second mounting cavity, the body is disposed in the first opening, the light source assembly is disposed outside the support member, and a second light-transmitting region is disposed on the support member and/or the body, and light emitted from the light source assembly enters the second mounting cavity through the second light-transmitting region, so that the light can reach the light-conducting assembly.
9. The keyboard of claim 8, wherein the second light-transmissive region is disposed on the support member; the second light-transmitting area of the support is made of a transparent material, and/or the second light-transmitting area is a second light-transmitting hole arranged on the support and communicated with the second mounting cavity; or the like, or a combination thereof,
the second light-transmitting area is arranged on the body; the second light-transmitting area of the body is made of transparent materials, and/or the second light-transmitting area is a second light-transmitting hole arranged on the body and communicated with the second mounting cavity; or the like, or, alternatively,
the second light-transmitting area comprises a first sub light-transmitting area on the support and a second sub light-transmitting area on the body;
the first sub light-transmitting area on the support is made of transparent materials; and/or the first sub light-transmitting area comprises a second light-transmitting hole arranged on the support piece, and the second light-transmitting hole is communicated with the second mounting cavity;
the second sub light-transmitting area of the body is made of transparent materials; and/or the second sub light-transmitting area comprises a second light-transmitting hole arranged on the body, and the second light-transmitting hole is communicated with the second installation cavity.
10. The keyboard according to any one of claims 3 to 9, wherein the touch surface of the first transparent substrate includes a first region and a second region, the first region is a transparent region, the second region is an opaque region, the light intensity detection assembly is located in the first region, the second region is provided with key marks, and the key marks on each second region are different.
11. An interactive tablet comprising the key module as claimed in claim 1 or 2, the interactive tablet further comprising a frame and a functional module, wherein the key body of the key module is disposed on the frame and electrically connected to the functional module, and the light source assembly of the key module is disposed inside the frame and/or outside the frame.
12. The interactive tablet of claim 11, wherein the light source assembly of the key module is disposed within the bezel;
a third mounting cavity and a second opening communicated with the third mounting cavity are formed in the frame, the key main body is arranged in the second opening, and the light source assembly is arranged in the third mounting cavity;
the second opening is provided with a light-transmitting ring around the key main body, part of light emitted by the light source assembly is emitted out of the second opening through the light-transmitting ring, and the color of the light emitted by the light source assembly is changeable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122751934.7U CN216597354U (en) | 2021-11-11 | 2021-11-11 | Key module, keyboard and interactive flat panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122751934.7U CN216597354U (en) | 2021-11-11 | 2021-11-11 | Key module, keyboard and interactive flat panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216597354U true CN216597354U (en) | 2022-05-24 |
Family
ID=81644130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122751934.7U Active CN216597354U (en) | 2021-11-11 | 2021-11-11 | Key module, keyboard and interactive flat panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216597354U (en) |
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2021
- 2021-11-11 CN CN202122751934.7U patent/CN216597354U/en active Active
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