CN104576147A

CN104576147A - Ultrathin luminous keyboard

Info

Publication number: CN104576147A
Application number: CN201410812691.5A
Authority: CN
Inventors: 刘凤森
Original assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Current assignee: DONGGUAN YONGJU ELECTRONIC Co Ltd
Priority date: 2014-12-24
Filing date: 2014-12-24
Publication date: 2015-04-29

Abstract

The invention discloses an ultrathin luminous keyboard which comprises a baseplate, a thin-film switch, a luminous strip, a light guide film and a panel, wherein the thin-film switch is arranged on the surface of the baseplate; the luminous strip comprises a thin-film layer and a plurality of LED lights; a circuit is printed on the thin-film layer; the LED lights are arranged on the thin-film layer, and are in electric connection with the circuit; a plurality of key parts are arranged on the surface of the light guide film; a plurality of light diffusing points are printed on each key part; a plurality of key areas are arranged on the panel; the key parts are respectively positioned under corresponding key areas. Through adoption of the light guide film and the coordination of the condition that the plurality of light diffusing points are formed on the light guide film in a printing manner, the conventional manner of forming light diffusing salient points on a plastic plate is replaced, no mould opening is needed, meanwhile the circuit is printed on the thin-film layer, and the LED lights are connected by utilizing the circuit to form the luminous strip, so that the overall thickness of the product is reduced, the product is simple in structure and convenient to produce and assemble, and the production cost is greatly reduced.

Description

Ultrathin luminescence keyboard

Technical field

The present invention relates to art of keypads technology, refer in particular to a kind of Ultrathin luminescence keyboard.

Background technology

Illuminated keyboard has become input peripheral device common on the market, the primary structure of existing illuminated keyboard has generally included substrate, switch, LED, optical waveguide layer and panel, this substrate, switch, optical waveguide layer and panel are folded successively from lower to upper to be established, LED is arranged and the below of optical waveguide layer or side, and the light that LED sends injects optical waveguide layer inside.

In prior art, optical waveguide layer is generally a plastic plate, it is formed with multiple astigmatism salient point by the mode of injection moulding or embossing, astigmatism salient point is utilized upwards to be propagated by the light in optical waveguide layer, due to employing is plastic plate, makes keyboard integral thickness thicker, and, need to carry out die sinking when manufacture optical waveguide layer, cost is higher; In addition, what the wire laying mode of LED adopted is cable or FPC line, makes the integral thickness of product thicker equally, and cost of manufacture improves.

Summary of the invention

In view of this, the present invention is directed to the disappearance of prior art existence, its main purpose is to provide a kind of Ultrathin luminescence keyboard, and it effectively can solve the existing problem that illuminated keyboard thickness is thick, cost is high.

For achieving the above object, the present invention adopts following technical scheme:

A kind of Ultrathin luminescence keyboard, includes substrate, thin film switch, light-emitting section, light guiding film and panel; This thin film switch is arranged on the surface of substrate; This light-emitting section is arranged at the top of thin film switch, and light-emitting section includes thin layer and multiple LED, and on this thin layer, printing is formed with circuit, and the plurality of LED to be arranged on thin layer and to be connected with line electricity; This light guiding film is arranged at the top of light-emitting section, the surface of light guiding film has multiple by key mapping, and each is formed with multiple scattering points by key mapping is all printed; This panel arranges the top of light guiding film, and panel has multiple key zone, and each key zone all has transmittance section and light shielding part, immediately below aforementioned multiple key zone laying respectively at correspondence by key mapping.

As a kind of preferred version, described substrate is FR4 sheet material, and the thickness of this substrate is 3mm.

As a kind of preferred version, described thin film switch is two-layer equation thin film switch.

As a kind of preferred version, described light-emitting section is positioned at the lateral margin bottom light guiding film, and the side edge of this light guiding film is arranged at intervals with multiple location notch, and the plurality of LED is embedded in respectively in corresponding location notch and locates.

As a kind of preferred version, described thin layer is PET material, and its thickness is 0.025mm ~ 0.188mm, and this circuit is silver slurry circuit.

As a kind of preferred version, described light guiding film is high transparency environmental protection PC material, and its thickness is 0.1mm ~ 0.3mm, and this scattering points is light guide ink.

As a kind of preferred version, described panel is PET material, and its thickness is 0.05mm ~ 0.25mm.

As a kind of preferred version, the periphery downward bending of described panel has shading flange, and this shading flange wraps all sides of light guiding film.

As a kind of preferred version, immediately below described light guiding film, be provided with light shield layer.

The present invention compared with prior art has obvious advantage and beneficial effect, specifically, as shown from the above technical solution:

By adopting light guiding film and the mode fitting through printing is formed with multiple scattering points in light guiding film, instead of the mode at the shaping astigmatism salient point of plastic plate of tradition, without the need to die sinking, printed wire on thin layer simultaneously, utilize connection LED to form light-emitting section, so make the integral thickness of product thinning, product structure is simple, make and easy to assembly, and greatly save production cost.

For more clearly setting forth architectural feature of the present invention and effect, below in conjunction with accompanying drawing and specific embodiment, the present invention is described in detail.

Accompanying drawing explanation

Fig. 1 is the schematic cross-section of the preferred embodiment of the present invention;

Fig. 2 is panel front view in the preferred embodiment of the present invention;

Fig. 3 is the front view of light-emitting section in the preferred embodiment of the present invention;

Fig. 4 is the front view of light guiding film in the preferred embodiment of the present invention.

Accompanying drawing identifier declaration:

10, substrate 20, thin film switch

21, upper diaphragm 22, lower diaphragm

23, push contact 30, light-emitting section

31, thin layer 32, LED

33, circuit 40, light guiding film

41, by key mapping 42, location notch

50, panel 51, key zone

511, transmittance section 512, light shielding part

52, shading flange 60, scattering points

70, light shield layer.

Embodiment

Please refer to shown in Fig. 1 to Fig. 4, that show the concrete structure of the preferred embodiment of the present invention, include substrate 10, thin film switch 20, light-emitting section 30, light guiding film 40 and panel 50.

This substrate 10 is FR4 sheet material, and the thickness of this substrate 10 is 3mm.

This thin film switch 20 is arranged on the surface of substrate 10, in the present embodiment, this thin film switch 20 is two-layer equation thin film switch, it includes upper diaphragm 21 and lower diaphragm 22, this upper diaphragm 21 and lower diaphragm 22 are laid with conducting wire respectively, on the conducting wire of upper diaphragm 21 and lower diaphragm 22, correspondence is provided with push contact 23 respectively, and this upper diaphragm 21 and lower diaphragm 22 are PET material, and its thickness is 0.075mm.

This light-emitting section 30 is arranged at the top of thin film switch 20, light-emitting section 30 includes thin layer 31 and multiple LED 32, on this thin layer 31, printing is formed with circuit 33, the plurality of LED 32 to be arranged on thin layer 31 and to be electrically connected with circuit 33, in the present embodiment, this thin layer 31 is PET material, and its thickness is 0.025mm ~ 0.188mm, and this circuit 33 is silver slurry circuit.

This light guiding film 40 is arranged at the top of light-emitting section 30, the surface of light guiding film 40 have multiple by key mapping 41, each is formed with multiple scattering points 60 by key mapping 41 is all printed, in the present embodiment, this light guiding film 40 is high transparency environmental protection PC material, its thickness is 0.1mm ~ 0.3mm, and this scattering points 60 is light guide ink.

This panel 50 arranges the top of light guiding film 40, panel 50 has multiple key zone 51, each key zone 51 all have transmittance section 511 and light shielding part 512, immediately below aforementioned multiple key zone 51 laying respectively at correspondence by key mapping 41, in the present embodiment, this panel 50 is PET material, its thickness is 0.05mm ~ 0.25mm, and the periphery downward bending of this panel 50 has shading flange 52, this shading flange 52 wraps all sides of light guiding film 40, in case leak-stopping light.

And, in the present embodiment, this light-emitting section 30 is positioned at the lateral margin bottom light guiding film 40, the side edge of this light guiding film 40 is arranged at intervals with multiple location notch 42, the plurality of LED 32 is embedded in location in corresponding location notch 42 respectively, and the light that the plurality of LED 32 sends enters in light guiding film 40 from light guiding film 40 side.

In addition, immediately below this light guiding film 40, be provided with light shield layer 70, to avoid the bottom light leak of light guiding film 40.

The course of work that the present embodiment is described in detail in detail is as follows:

Circuit 33 is accessed power supply, the input service voltage of power supply is 5V, operating current is 5mm-20mm, multiple LED 32 is lighted, the light that LED 32 sends enters in light guiding film 40, and then, light spreads backward upper injection through scattering points 60 and penetrates from the transmittance section 511 of panel 50, to realize keyboard luminescence, keyboard can present different brightness changes.

Design focal point of the present invention is: by adopting light guiding film and the mode fitting through printing is formed with multiple scattering points in light guiding film, instead of the mode at the shaping astigmatism salient point of plastic plate of tradition, without the need to die sinking, printed wire on thin layer simultaneously, utilize connection LED to form light-emitting section, so make the integral thickness of product thinning, product structure is simple, make and easy to assembly, and greatly save production cost.

The above, it is only preferred embodiment of the present invention, not technical scope of the present invention is imposed any restrictions, thus every above embodiment is done according to technical spirit of the present invention any trickle amendment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims

1. a Ultrathin luminescence keyboard, is characterized in that: include substrate, thin film switch, light-emitting section, light guiding film and panel; This thin film switch is arranged on the surface of substrate; This light-emitting section is arranged at the top of thin film switch, and light-emitting section includes thin layer and multiple LED, and on this thin layer, printing is formed with circuit, and the plurality of LED to be arranged on thin layer and to be connected with line electricity; This light guiding film is arranged at the top of light-emitting section, the surface of light guiding film has multiple by key mapping, and each is formed with multiple scattering points by key mapping is all printed; This panel arranges the top of light guiding film, and panel has multiple key zone, and each key zone all has transmittance section and light shielding part, immediately below aforementioned multiple key zone laying respectively at correspondence by key mapping.

2. Ultrathin luminescence keyboard according to claim 1, is characterized in that: described substrate is FR4 sheet material, and the thickness of this substrate is 3mm.

3. Ultrathin luminescence keyboard according to claim 1, is characterized in that: described thin film switch is two-layer equation thin film switch.

4. Ultrathin luminescence keyboard according to claim 1, is characterized in that: described light-emitting section is positioned at the lateral margin bottom light guiding film, the side edge of this light guiding film is arranged at intervals with multiple location notch, and the plurality of LED is embedded in respectively in corresponding location notch and locates.

5. Ultrathin luminescence keyboard according to claim 1, is characterized in that: described thin layer is PET material, and its thickness is 0.025mm ~ 0.188mm, and this circuit is silver slurry circuit.

6. Ultrathin luminescence keyboard according to claim 1, is characterized in that: described light guiding film is high transparency environmental protection PC material, and its thickness is 0.1mm ~ 0.3mm, and this scattering points is light guide ink.

7. Ultrathin luminescence keyboard according to claim 1, is characterized in that: described panel is PET material, and its thickness is 0.05mm ~ 0.25mm.

8. Ultrathin luminescence keyboard according to claim 1, is characterized in that: the periphery downward bending of described panel has shading flange, and this shading flange wraps all sides of light guiding film.

9. Ultrathin luminescence keyboard according to claim 1, is characterized in that: be provided with light shield layer immediately below described light guiding film.