CN105070567A - Key device - Google Patents
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- CN105070567A CN105070567A CN201510454502.6A CN201510454502A CN105070567A CN 105070567 A CN105070567 A CN 105070567A CN 201510454502 A CN201510454502 A CN 201510454502A CN 105070567 A CN105070567 A CN 105070567A
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- Prior art keywords
- conductive materials
- circuit board
- light
- emitting component
- key device
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2209/00—Layers
Landscapes
- Elimination Of Static Electricity (AREA)
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The present invention relates to a key device which comprises a bottom plate, a circuit board, a light-emitting element and a grounded structure. The bottom plate is coupled to a ground potential. The circuit board is arranged on the bottom plate and has a through hole. The light-emitting element is arranged on the circuit board. The grounded structure comprises a first electrically conductive material and a second electrically conductive material. The first electrically conductive material is smeared on the circuit board and extends along the periphery of the light-emitting element, the electrically conductive material is electrically coupled to the first electrically conductive material, and a part of the second electrically conductive material extends under the circuit board. When static electricity appears outside, the static electricity is conducted and connected to the ground potential through the first electrically conductive material and the second electrically conductive material. Thus the static electricity does not enter into the circuit board through the light-emitting element, and the input function of a keyboard affected by the damage to the circuit board is avoided.
Description
Technical field
The present invention relates to a kind of key device, espespecially a kind of luminous key device with antistatic protection function.
Background technology
Recently, keyboard has become the common input tool of people, in order to input characters, numeral, symbol etc.For some specific keys, as: CapsLock button, often light-emitting device (such as light-emitting diode) is set in film circuit board those specific keys places corresponding of keyboard, to make CapsLock button, there is prompting cresset function, whether start with the current keyboard CapsLock of light prompt user, the English words that prompting user inputs at present is upper case or lower case.But, when outside produces electrostatic or when utilizing static gun to carry out electrostatic test, outside electrostatic or the electrostatic produced by static gun can enter film circuit board via this light-emitting device, and then infringement film circuit board, thus affect the input function of keyboard.
Summary of the invention
Therefore, the invention provides a kind of luminous key device with antistatic protection function, to solve the problem.
In order to achieve the above object, the present invention proposes a kind of key device, includes base plate, keycap, circuit board, light-emitting component and ground structure.Base plate couples earthing potential; Keycap is arranged at above this base plate and this keycap can move up and down by this base plate relatively; Circuit board is arranged on this base plate, and this circuit board has circuit board upper surface, circuit board lower surface and at least one through hole, and this circuit board upper surface has upper dispensing area, and the upper end of this through hole is positioned at dispensing area on this; Light-emitting component is in order to emit beam, and this light-emitting component is arranged at this circuit board upper surface, and on this, dispensing area extends around this light-emitting component, and this light is according to the bottom surface to this keycap; Ground structure includes the first conductive materials and the second conductive materials, and the first conductive materials coats dispensing area on this, makes this first conductive materials cover this through hole and this first conductive materials extends around this light-emitting component; Second conductive materials is filled in this through hole, and this second conductive materials is electrically coupled to this first conductive materials, and this second conductive materials part extends this circuit board lower surface to be electrically coupled to this base plate; Wherein, when there is electrostatic in outside, this electrostatic sequentially through this first conductive materials, this second conductive materials and this base plate conducting to this earthing potential.
As optional technical scheme, this ground structure also includes the 3rd conductive materials, 3rd conductive materials coats the lower dispensing area of this circuit board lower surface, the lower end of this through hole is positioned at this lower dispensing area, this second conductive materials of 3rd conductive materials electric property coupling and this base plate, wherein, increase the contact area of this ground structure and this base plate by this lower dispensing area, make this electrostatic sequentially through this first conductive materials, this second conductive materials, the 3rd conductive materials and this base plate conducting to this earthing potential.
As optional technical scheme, this key device also includes shade, this shade is arranged on this circuit board upper surface, this shade has outer surface and inner surface, this inner surface and this circuit board define accommodation space, this accommodation space is in order to this light-emitting component accommodating, wherein this ground structure also includes the 4th conductive materials, 4th conductive materials coating is covered in this at least part of outer surface of this shade, 4th conductive materials is electrically coupled to this first conductive materials, make this electrostatic sequentially through the 4th conductive materials, this first conductive materials, this second conductive materials and this base plate and conducting are to this earthing potential.
As optional technical scheme, this key device also includes shade, this shade is arranged on this circuit board upper surface, this shade has outer surface and inner surface, this inner surface and this circuit board define accommodation space, this accommodation space in order to this light-emitting component accommodating, this shade made by electric conducting material, make this electrostatic sequentially through this shade, this first conductive materials, this second conductive materials and this base plate conducting to this earthing potential.
As optional technical scheme, on this, dispensing area is a plurality of strip regions be not connected each other, and this light-emitting component has polygon periphery, and this plurality of strip region is respectively along at least one of them extension of this polygon periphery.
As optional technical scheme, on this, dispensing area is for closing appearing areas, and this closed appearing areas is around this light-emitting component.
As optional technical scheme, this at least one through hole is a plurality of through hole, and this plurality of through hole is with this light-emitting component for symmetrical centre, and this plurality of through hole is symmetrically around being distributed in this light-emitting component surrounding.
As optional technical scheme, on this, dispensing area has inner edge and outer rim, and this inner edge does not contact with this light-emitting component, this outer rim between the edge of this light-emitting component and this keycap between the projection of this circuit board upper surface.
As optional technical scheme, on this, dispensing area has inner edge and outer rim, and this inner edge does not contact with this light-emitting component, the edge of this keycap in the projection of this circuit board upper surface between this inner edge and this outer rim.
As optional technical scheme, have gap between the outer peripheral edges of this inner edge and this light-emitting component, this gap equals the tolerance of coating and printing processing procedure.
In sum, key device of the present invention offers through hole in the upper dispensing area at the contiguous light-emitting component place of circuit board, the present invention also in upper dispensing area, be coated with the first conductive materials and in through hole filling second conductive materials, and make the earthing potential of the first conductive materials electric property coupling second conductive materials and the second conductive materials electric property coupling base plate, use and outside electrostatic one grounding path occurred is provided.Therefore, electrostatic just can not enter circuit board via light-emitting component, to avoid damaging circuit board.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the keyboard of first embodiment of the invention;
Fig. 2 is the partial top view of the keyboard of first embodiment of the invention;
Fig. 3 is for the key device shown in Fig. 1 is along the profile of hatching X-X;
Fig. 4 is the partial top view of the keyboard of second embodiment of the invention;
Fig. 5 is the profile of the key device of third embodiment of the invention;
Fig. 6 is the profile of the key device of fourth embodiment of the invention;
Fig. 7 is the profile of the key device of fifth embodiment of the invention;
Fig. 8 is the vertical view of the key device of fifth embodiment of the invention;
Fig. 9 is the vertical view of the key device of sixth embodiment of the invention.
Embodiment
The direction term mentioned in following examples such as: upper and lower, left and right, front or rear etc., is only the direction with reference to annexed drawings.Therefore, the direction term of use is used to illustrate and is not used for limiting the present invention.Refer to Fig. 1, Fig. 1 is the schematic diagram of the keyboard 1000 of first embodiment of the invention.As shown in Figure 1, keyboard 1000 has a plurality of button, and user can utilize those key-press input word, numeral, symbols etc.In practical operation, CapsLock button 1 can be designed to the button with prompting cresset function, and whether start with light prompt user current keyboard CapsLock button 1, the English words that prompting user inputs at present is upper case or lower case.
Refer to Fig. 2 and Fig. 3, Fig. 2 is the vertical view of the keyboard 1000 of first embodiment of the invention, and Fig. 3 is for key device 1 shown in Fig. 1 is along the profile of hatching X-X.As shown in FIG. 2 and 3, key device 1 includes base plate 10, keycap 11, circuit board 12, liftable supporter 13, light-emitting component 14, ground structure 15 and elastic component 16, base plate 10 couples earthing potential 101, keycap 11 is arranged at above base plate 10, and liftable supporter 13 and elastic component 16 are all arranged between base plate 10 and keycap 11.In this embodiment, liftable supporter 13 can be scissor leg structure (scissormechanism), and elastic component 16 can be rubber sheet gasket (rubberdome), but the present invention does not limit by this, such as liftable supporter 13 also can be balancing pole (linkbar), and elastic component 16 also can be metal spring leaf (metalspring), looks closely actual demand and determines.
Further, when keycap 11 is pressed, keycap 11 draws by liftable supporter 13 and moves towards the direction near base plate 10; Otherwise, when keycap 11 is no longer pressed, elastic component 16 can provide elastic-restoring force to order about keycap 11 to reset, and in reseting procedure, keycap 11 still draws by liftable supporter 13 and towards moving away from the direction of base plate 10, and keycap 11 just can utilize liftable supporter 13 and elastic component 16 and opposed bottom 10 moves up and down reposefully by this.
In addition, circuit board 12 is arranged on base plate 10, circuit board 12 has circuit board upper surface 120, circuit board lower surface 121 and a plurality of through hole 122, circuit board upper surface 120 has upper dispensing area 1201, and the upper end of each through hole 122 lays respectively in dispensing area 1201, light-emitting component 14 is arranged at the circuit board upper surface 120 of circuit board 12, wherein goes up dispensing area 1201 and extends along light-emitting component 14 surrounding, light-emitting component 14 is in order to emit beam 140, and light 140 shines to keycap 11 bottom surface.In addition, keycap 11 includes key body 110 and transmittance section 111, key body 110 can made by opaque plastic cement material, transmittance section 111 can be one-body molded with key body 110 made by the transparent plastic cement material, the light 140 that light-emitting component 14 sends by this just can transmit outside keycap 11 via transmittance section 111, to reach keycap 11 in effect of specific region (i.e. transmittance section 111 place) luminescence.
Ground structure 15 includes the first conductive materials 150 and the second conductive materials 151, first conductive materials 150 is coated in dispensing area 1201, makes the first conductive materials 150 cover each through hole 122 and extends (as shown in Figure 2) along light-emitting component 14 surrounding.Second conductive materials 151 is filled in each through hole 122, second conductive materials 151 is electrically coupled to the first conductive materials 150, and the second conductive materials 151 part extends circuit board lower surface 121, make the second conductive materials 151 can contact base plate 10 and be electrically coupled to base plate 10 and earthing potential 101 (as shown in Figure 3).
In this embodiment, upper dispensing area 1201 closes appearing areas for essence, and this closed appearing areas is around light-emitting component 14.In addition, upper dispensing area 1201 has inner edge 1202 and outer rim 1203, keycap 11 has the first edge 113, edge 112, second, the 3rd edge 114 and the 4th edge 115, inner edge 1202 does not contact with light-emitting component 14, outer rim 1203 between the first edge 112 of light-emitting component 14 and keycap 11 between the projection 1204 of circuit board upper surface 120.In other words, the configuration of dispensing area 1201 and its inner rim 1202 and outer rim 1203 in above, coat the first conductive materials 150 in dispensing area 1201 can around and surround light-emitting component 14, and the edge of the first conductive materials 150 can compared with light-emitting component 14 near the first edge 113, edge 112, second of keycap 11, the 3rd edge 114 and the 4th edge 115 (as shown in FIG. 2 and 3).As shown in Figure 2, between the outer peripheral edges of inner edge 1202 and light-emitting component 14, there is clearance G, and in this embodiment, clearance G approximates the tolerance of coating and printing processing procedure, such as: 0.3 millimeter (millimeter, mm).
Therefore, when there is electrostatic F or produce electrostatic F by static gun (not being illustrated in figure) in outside, the path arriving the first conductive materials 150 because of electrostatic F is shorter than the path arriving light-emitting component 14, therefore electrostatic F can via the first shorter grounding path P1 ground connection, namely the outside electrostatic F that occurs or the electrostatic F produced by static gun can sequentially through the first conductive materials 150, second conductive materials 151 with base plate 10 conducting to earthing potential 101.That is, because the edge of the first conductive materials 150 can compared with light-emitting component 14 near the first edge 113, edge 112, second of keycap 11, the 3rd edge 114 and the 4th edge 115, therefore electrostatic F just can pass through the first grounding path P1 ground connection of the first conductive materials 150, second conductive materials 151 and base plate 10 construction.Thus, electrostatic F just can not enter circuit board 12 via light-emitting component 14, and then avoids damaging circuit board 12.
It is worth mentioning that, circuit board 12 includes a plurality of through hole 122, and this plurality of through hole 122 with light-emitting component 14 for symmetrical centre, that is this plurality of through hole 122 is symmetrically around being distributed in light-emitting component 14 surrounding.Thus, the upper dispensing area 1201 of circuit board 12 between first edge 112 and light-emitting component 14 of keycap 11, upper dispensing area 1201 between second edge 113 and light-emitting component 14 of keycap 11, through hole 122 is equipped with in upper dispensing area 1201 between the 3rd edge 114 and light-emitting component 14 of keycap 11 and the upper dispensing area 1201 between the 4th edge 115 and light-emitting component 14 of keycap 11, electrostatic F is made no matter to be the first edge 112 resulting from keycap 11, second edge 113, 3rd edge 114 or the 4th edge 115, the present invention is equipped with corresponding through hole 122, to provide the first grounding path P1 making electrostatic F ground connection.
In addition, for saving the circuit arrangement space of circuit board 12, circuit board 12 of the present invention also only can establish a through hole 122, and the first conductive materials 150 of collocation ground structure 15 is close the structure be connected, and also can reach the object of the first grounding path P1 providing to make electrostatic F ground connection.In other words, as long as circuit board 12 includes the structural design of at least one through hole 122, all in the category that the present invention protects.In this embodiment, the first conductive materials 150 and the second conductive materials 151 can be starched by silver or made by conductive paint material, but the present invention does not limit by this.
Refer to Fig. 4, Fig. 4 is the schematic top plan view of the keyboard 1000' of second embodiment of the invention.As shown in Figure 4, the main difference of keyboard 1000' and above-mentioned keyboard 1000 be in, the upper dispensing area 1201' of the circuit board 12 of the key device 1' of keyboard 1000' is a plurality of strip regions be not connected each other, the light-emitting component 14 of key device 1' has polygon periphery, and a plurality of strip region is respectively along at least one of them extension of polygon periphery.In the present embodiment, upper dispensing area 1201' includes four strip regions 1205, 1206, 1207, 1208 (or call it, first strip region 1205, second strip region 1206, Article 3 shape region 1207, Article 4 shape region 1208), light-emitting component 14 is essentially quadrilateral structure, it has and comprises the first lateral margin 141, second lateral margin 142, the quadrangle periphery of the 3rd lateral margin 143 and the 4th lateral margin 144, wherein the first edge 112 of the corresponding keycap of the first strip region 1,205 11 is with the first lateral margin 141 of light-emitting component 14 and the first strip region 1205 covers first group of through hole 122' in a plurality of through hole 122, second edge 113 of the corresponding keycap of the second strip region 1,206 11 is with the second lateral margin 142 of light-emitting component 14 and the second strip region 1206 covers second group of through hole 122 in a plurality of through hole 122 ", 3rd edge 114 of the corresponding keycap 11 in Article 3 shape region 1207 is with the 3rd lateral margin 143 of light-emitting component 14 and Article 3 shape region 1207 covers the 3rd group of through hole 122 in a plurality of through hole 122 " ', and the 4th lateral margin 144 of the 4th edge 115 of the corresponding keycap 11 in Article 4 shape region 1208 and light-emitting component 14 and Article 4 shape region 1208 cover the 4th group of through hole 122 " " of a plurality of through hole 122.As shown in Figure 4, between first strip region 1205 and the first lateral margin 141, between the second strip region 1206 and the second lateral margin 142, between Article 3 shape region 1207 and the 3rd lateral margin 143 and between Article 4 shape region 1208 and the 4th lateral margin 144, all there is gap, and in this embodiment, those gaps approximate the tolerance of coating and printing processing procedure, such as: 0.3 millimeter.And this embodiment and the element in above-described embodiment with identical label, it has identical structural design and action principle, for the sake of clarity, repeats no more in this.
Refer to Fig. 5, Fig. 5 is the key device 1 of third embodiment of the invention " generalized section.As shown in Figure 5, key device 1 " be in key device 1 with the main difference of above-mentioned key device 1 " the upper dispensing area 1201 of circuit board 12 " and outer rim 1203' exceed the first edge 112 of keycap 11, namely the first edge 112 of keycap 11 in the projection 1204 of circuit board upper surface 120 between upper dispensing area 1201 " inner edge 1202 and outer rim 1203' between.And this embodiment and the element in above-described embodiment with identical label, it has identical structural design and action principle, for the sake of clarity, repeats no more in this.
Refer to Fig. 6, Fig. 6 is the key device 1 of fourth embodiment of the invention " ' generalized section.As shown in Figure 6, key device 1 " ' be in key device 1 with the main difference of above-mentioned key device 1 " ' ground structure 15' also include the 3rd conductive materials 152, coat in the lower dispensing area 1210 of the circuit board lower surface 121 of circuit board 12; The lower end of through hole 122 is positioned at lower dispensing area 1210, and the 3rd conductive materials 152 electric property coupling second conductive materials 151,3rd conductive materials 152 like this just can be used to the contact area increasing ground structure 15' and base plate 10, and then makes ground structure 15' more effectively be electrically conducted earthing potential 101 in base plate 10.
Thus, the outside electrostatic F that occurs or by static gun institute produce electrostatic F just can sequentially through the first conductive materials 150, second conductive materials 151, the 3rd conductive materials 152 and base plate 10 conducting to earthing potential 101 (namely the second grounding path P2) as shown in Figure 6.Therefore, electrostatic F just can not enter circuit board 12 via light-emitting component 14, and then avoids damaging circuit board 12.In this embodiment, the first conductive materials 150, second conductive materials 151 and the 3rd conductive materials 152 can be starched by silver or made by conductive paint material, but the present invention does not limit by this.And this embodiment and the element in above-described embodiment with identical label, it has identical structural design and action principle, for the sake of clarity, repeats no more in this.
Refer to Fig. 7 and Fig. 8, Fig. 7 is the generalized section of the key device 1 " " of fifth embodiment of the invention, and Fig. 8 is the schematic top plan view of fifth embodiment of the invention key device 1 " ".As shown in Figure 7 and Figure 8, the main difference of key device 1 " " and above-mentioned key device 1 be in: key device 1 " " also includes shade 17, shade 17 is arranged on the circuit board upper surface 120 of circuit board 12, shade 17 has outer surface 170 and inner surface 171, inner surface 171 defines an accommodation space 172 with the circuit board upper surface 120 of circuit board 12, and accommodation space 172 is in order to accommodating light-emitting component 14.In addition, shade 17 includes cover body 173 and transmittance section 174, cover body 173 can made by light tight material, transmittance section 174 can be opening or made by light-transmitting materials, the light 140 that light-emitting component 14 sends by this just can be restricted to transmittance section 174 place and appear, to prevent the generation of keycap 11 side light leakage phenomena.
In addition, the ground structure 15 of key device 1 " " " also include the outer surface at least partially 170 that the 4th conductive materials the 153, four conductive materials 153 coating is covered in shade 17, and the 4th conductive materials 153 is electrically coupled to the first conductive materials 150.Thus, the outside electrostatic F that occurs or by static gun institute produce electrostatic F just can sequentially through the 4th conductive materials 153, first conductive materials 150, second conductive materials 151 and base plate 10 conducting to earthing potential 101 (namely the 3rd grounding path P3) as shown in Figure 7.Therefore, electrostatic F just can not enter circuit board 12 via light-emitting component 14, and then avoids damaging circuit board 12.In this embodiment, the first conductive materials 150, second conductive materials 151 and the 4th conductive materials 153 can be starched by silver or made by conductive paint material, but the present invention does not limit by this.It is worth mentioning that, in this embodiment, shade 17 can made by electric conducting material (such as metal), therefore the outside electrostatic F that occurs or by static gun institute produce electrostatic F also can sequentially through shade 17, first conductive materials 150, second conductive materials 151 and base plate 10 conducting to earthing potential 101 (namely the 4th grounding path P4) as shown in Figure 7.And the material of shade 17 of the present invention can not be limit by this.And this embodiment and the element in above-described embodiment with identical label, it has identical structural design and action principle, for the sake of clarity, repeats no more in this.
Refer to Fig. 9, Fig. 9 is the schematic top plan view of the key device 1 " " of sixth embodiment of the invention.As shown in Figure 9, key device 1 " " ' with the main difference of above-mentioned key device 1 " " be in, key device 1 " " ' the upper dispensing area 1201' of circuit board 12 be a plurality of strip regions be not connected each other.And this embodiment and the element in above-described embodiment with identical label, it has identical structural design and action principle, for the sake of clarity, repeats no more in this.
Compared to prior art, key device of the present invention offers through hole in the upper dispensing area at the contiguous light-emitting component place of circuit board, the present invention also in upper dispensing area, be coated with the first conductive materials and in through hole filling second conductive materials, and make the earthing potential of the first conductive materials electric property coupling second conductive materials and the second conductive materials electric property coupling base plate, use and outside electrostatic one grounding path occurred is provided.Therefore, electrostatic just can not enter circuit board via light-emitting component, and then the input function avoided damaging circuit board and affect keyboard.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can make various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection range that all should belong to the claim appended by the present invention.
Claims (10)
1. a key device, is characterized in that including:
Base plate, couples earthing potential;
Keycap, is arranged at above this base plate and this keycap can move up and down by this base plate relatively;
Circuit board, is arranged on this base plate, and this circuit board has circuit board upper surface, circuit board lower surface and at least one through hole, and this circuit board upper surface has upper dispensing area, and the upper end of this through hole is positioned at dispensing area on this;
Light-emitting component, in order to emit beam, this light-emitting component is arranged at this circuit board upper surface, and on this, dispensing area extends around this light-emitting component, and this light is according to the bottom surface to this keycap; And
Ground structure, includes:
First conductive materials, coats dispensing area on this, makes this first conductive materials cover this through hole and this first conductive materials extends around this light-emitting component; And
Second conductive materials, is filled in this through hole, and this second conductive materials is electrically coupled to this first conductive materials, and this second conductive materials part extends this circuit board lower surface to be electrically coupled to this base plate;
Wherein, when there is electrostatic in outside, this electrostatic sequentially through this first conductive materials, this second conductive materials and this base plate conducting to this earthing potential.
2. key device according to claim 1, is characterized in that: this ground structure also includes:
3rd conductive materials, coat the lower dispensing area of this circuit board lower surface, the lower end of this through hole is positioned at this lower dispensing area, this second conductive materials of 3rd conductive materials electric property coupling and this base plate, wherein, increase the contact area of this ground structure and this base plate by this lower dispensing area, make this electrostatic sequentially through this first conductive materials, this second conductive materials, the 3rd conductive materials and this base plate conducting to this earthing potential.
3. key device according to claim 1, it is characterized in that: this key device also includes shade, this shade is arranged on this circuit board upper surface, this shade has outer surface and inner surface, this inner surface and this circuit board define accommodation space, this accommodation space is in order to this light-emitting component accommodating, and wherein this ground structure also includes:
4th conductive materials, coating is covered in this at least part of outer surface of this shade, 4th conductive materials is electrically coupled to this first conductive materials, make this electrostatic sequentially through the 4th conductive materials, this first conductive materials, this second conductive materials and this base plate conducting to this earthing potential.
4. key device according to claim 1, it is characterized in that: this key device also includes shade, this shade is arranged on this circuit board upper surface, this shade has outer surface and inner surface, this inner surface and this circuit board define accommodation space, this accommodation space in order to this light-emitting component accommodating, this shade made by electric conducting material, make this electrostatic sequentially through this shade, this first conductive materials, this second conductive materials and this base plate conducting to this earthing potential.
5. the key device according to claim 1 or 3, it is characterized in that: on this, dispensing area is a plurality of strip regions be not connected each other, this light-emitting component has polygon periphery, and this plurality of strip region is respectively along at least one of them extension of this polygon periphery.
6. key device according to claim 1, is characterized in that: on this, dispensing area is for closing appearing areas, and this closed appearing areas is around this light-emitting component.
7. key device according to claim 1, is characterized in that: this at least one through hole is a plurality of through hole, and this plurality of through hole is with this light-emitting component for symmetrical centre, and this plurality of through hole is symmetrically around being distributed in this light-emitting component surrounding.
8. key device according to claim 1, is characterized in that: on this, dispensing area has inner edge and outer rim, and this inner edge does not contact with this light-emitting component, this outer rim between the edge of this light-emitting component and this keycap between the projection of this circuit board upper surface.
9. key device according to claim 1, is characterized in that: on this, dispensing area has inner edge and outer rim, and this inner edge does not contact with this light-emitting component, the edge of this keycap in the projection of this circuit board upper surface between this inner edge and this outer rim.
10. key device according to claim 8 or claim 9, it is characterized in that: have gap between the outer peripheral edges of this inner edge and this light-emitting component, this gap equals the tolerance of coating and printing processing procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510454502.6A CN105070567A (en) | 2015-07-29 | 2015-07-29 | Key device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510454502.6A CN105070567A (en) | 2015-07-29 | 2015-07-29 | Key device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105070567A true CN105070567A (en) | 2015-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510454502.6A Pending CN105070567A (en) | 2015-07-29 | 2015-07-29 | Key device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9941070B2 (en) | 2016-03-25 | 2018-04-10 | Darfon Electronics (Suzhou) Co., Ltd. | Keyswitch structure mounted within a circuit board and baseplate |
| TWI632573B (en) * | 2016-03-25 | 2018-08-11 | 達方電子股份有限公司 | Keyswitch structure |
| CN114520122A (en) * | 2020-11-18 | 2022-05-20 | 重庆达方电子有限公司 | Backlight device for luminous keyboard |
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| JP2007080643A (en) * | 2005-09-13 | 2007-03-29 | Polymatech Co Ltd | Key sheet |
| CN202120795U (en) * | 2011-03-04 | 2012-01-18 | 群光电子股份有限公司 | Key module, keyboard and electronic device |
| CN202678132U (en) * | 2012-07-02 | 2013-01-16 | 苏州达方电子有限公司 | Keys and keyboard |
| CN103354188A (en) * | 2013-06-04 | 2013-10-16 | 苏州达方电子有限公司 | Illuminant keyboard and light guide plate module thereof and manufacture method of light guide plate module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9941070B2 (en) | 2016-03-25 | 2018-04-10 | Darfon Electronics (Suzhou) Co., Ltd. | Keyswitch structure mounted within a circuit board and baseplate |
| TWI632573B (en) * | 2016-03-25 | 2018-08-11 | 達方電子股份有限公司 | Keyswitch structure |
| CN114520122A (en) * | 2020-11-18 | 2022-05-20 | 重庆达方电子有限公司 | Backlight device for luminous keyboard |
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