CN202521385U

CN202521385U - Backlight module and light-emitting keyboard

Info

Publication number: CN202521385U
Application number: CN2012200218760U
Authority: CN
Inventors: 何宣纬; 何信政; 姚良瑜
Original assignee: Darfon Electronics Suzhou Co Ltd; Darfon Electronics Corp
Current assignee: Darfon Electronics Suzhou Co Ltd; Darfon Electronics Corp
Priority date: 2012-01-18
Filing date: 2012-01-18
Publication date: 2012-11-07
Anticipated expiration: 2022-01-18

Abstract

The utility model relates to a backlight module and a light-emitting keyboard. The backlight module comprises a light-guiding plate, a light-shading layer, a reflection layer, at least one light-emitting element and a light-shading piece. The light-guiding plate is provided with a top face, a bottom face and a consecutive circular edge, wherein the top face is opposite to the bottom face, the circular edge is located between the top face and the bottom face. The light-shading layer is arranged on the top face of the light-guiding plate, and the reflection layer is arranged on the bottom face of the light-guiding plate. At least one light-emitting element is used for supplying light rays which are emitted into the light-guiding plate. The light-shading piece is arranged around the circular edge of the light-guiding plate. A closed space is formed by enclosure of the light-shading piece, the light-shading layer and the reflection layer, and the light-guiding plate is arranged inside the closed space. A keyboard body is disposed on one face of the light-shading layer opposite to the light-guiding plate to form the light-emitting keyboard. The backlight module and the light-emitting keyboard improves utilization rate of light and overall brightness of the light-emitting keyboard by preventing the backlight module of the light-emitting keyboard from leaking the light.

Description

Module backlight and illuminated keyboard

Technical field

The utility model refers to a kind of light leak of avoiding especially about a kind of module backlight and illuminated keyboard, improves the module backlight and the illuminated keyboard of light utilization rate.

Background technology

Along with the progress of science and technology, illuminated keyboard will develop into the main flow of keyboard gradually, and illuminated keyboard can use in the more not abundant occasion of light.Particularly dispose the notebook computer of illuminated keyboard, more can let the user all can use notebook computer easily in various occasions.

For luminous efficiency and the overall brightness that promotes illuminated keyboard, must avoid the module backlight of illuminated keyboard to produce light leak.General dealer's way is with the reflecting layer or the light shield layer reflexed of module backlight, and reflecting layer and light shield layer are pasted each other, and LGP is located between reflecting layer and the light shield layer, reaches the purpose of avoiding the LGP light leak by this.But the main disappearance of above-mentioned convention way is, if the formed accommodation space degree of depth is not enough between reflecting layer and the light shield layer, causes easily after then long-time the use and comes unglued; Reflector plate is separated with light shield layer, and light still can be overflowed by the LGP edge, in addition; Illuminated keyboard can generate heat after long-time use; And owing to LGP, light shield layer, reflector plate material difference, the coefficient of expansion is also different, has the risk of coming unglued of potentiality; After for example the LGP heating is expanded, may light shield layer and reflector plate be strutted.

The utility model content

Because the disappearance of known techniques, the utility model proposes a kind of module backlight and illuminated keyboard, can avoid light leak, improves the light utilization rate.

For achieving the above object, the utility model proposes a kind of module backlight, comprises: LGP, have end face, bottom surface and continuous periphery, and this end face is with respect to this bottom surface, and this periphery is between this end face and this bottom surface; Light shield layer is arranged at this end face of this LGP; The reflecting layer is arranged at this bottom surface of this LGP; At least one light-emitting component is injected this LGP in order to light to be provided; And shading piece, around this periphery setting of this LGP, this shading piece, this light shield layer and this reflecting layer enclose the formation enclosure space, and this LGP is arranged in this enclosure space.

As optional technical scheme, this shading piece is located between this light shield layer and this reflecting layer.

As optional technical scheme, this shading piece has relative first and second, and this first engages with this light shield layer, and this second engages with this reflecting layer.

As optional technical scheme, first of this of this shading piece and this second are provided with adhering agent layer, and be bonding with this light shield layer and this reflecting layer in order to respectively.

As optional technical scheme, the thickness of this shading piece is identical with the thickness of this LGP.

As optional technical scheme, this light shield layer and this reflecting layer have periphery respectively, and this shading piece centers on the periphery setting of this LGP, and simultaneously around this light shield layer and the periphery setting of one of them at least of this reflecting layer.

As optional technical scheme, this shading piece is provided with adhering agent layer towards the contact-making surface in this LGP, this light shield layer and this reflecting layer, in order to bonding with this LGP, this light shield layer and this reflecting layer.

As optional technical scheme, this shading piece is black sponge sheet or black rubber sheet.

For achieving the above object, the utility model more proposes a kind of illuminated keyboard, comprises: aforesaid module backlight; And the keyboard body, be disposed at this light shield layer with respect to the one side that is provided with this LGP.

As optional technical scheme, this keyboard body comprises substrate and at least one keycap, between this keycap and this substrate, is provided with syndeton, and this keycap and this substrate interconnect by this syndeton.

As optional technical scheme; This substrate and the corresponding position of this light shield layer are respectively equipped with at least one hollow part, and the light that this at least one light-emitting component sent can penetrate this substrate by this set at least one hollow part of this substrate and the corresponding position of this light shield layer.

For making your juror further understanding and approval arranged for the structure purpose and the effect of the utility model, cooperate diagram to specify now as after.

Description of drawings

Fig. 1 is the combination cross-sectional view of the utility model module first embodiment backlight.

Fig. 2 is the decomposition cross-sectional view of the utility model module first embodiment backlight.

Fig. 3 is the plan structure sketch map of the utility model module first embodiment backlight.

Fig. 4 to Fig. 6 is the combination cross-sectional view of the utility model module second to the 4th embodiment backlight.

Fig. 7 is the combination cross-sectional view of the utility model illuminated keyboard first embodiment.

Fig. 8 is the combination cross-sectional view of the utility model illuminated keyboard second embodiment.

The specific embodiment

Below will be with reference to the graphic the utility model of describing of enclosing for reaching employed technological means of purpose and effect; And below graphic cited embodiment be merely aid illustration; Your understand in order to juror, but that the technological means of this case is not limited to is cited graphic.

See also Fig. 1 to shown in Figure 3, be the module backlight 10 that the utility model provided, it comprises LGP 11, light shield layer 12, reflecting layer 13, a plurality of light-emitting component 14 and shading piece 15.LGP 11 has end face 111, bottom surface 112 and continuous periphery 113, and this end face 111 is with respect to this bottom surface 112, and this periphery 113 is between end face 111 and bottom surface 112.Light shield layer 12 is arranged at the end face 111 of LGP 11, and reflecting layer 13 is arranged at the bottom surface 112 of LGP 11.Light-emitting component 14 is injected this LGP 11 in order to light to be provided, and set quantity and the position thereof of light-emitting component 14 is unqualified, and in present embodiment, these a plurality of light-emitting components 14 are arranged at the side of LGP 11.Shading piece 15 is provided with around the periphery 113 of this LGP 11, and the thickness T 1 of shading piece 15 is identical with the thickness T 2 of LGP 11.This shading piece 15 has relative first 151 and second 152; Be provided with adhering agent layer in this first 151 and this second 152; This first 151 engages with light shield layer 12; This second 152 engages with reflecting layer 13, and shading piece 15 can be binded with light shield layer 12 and reflecting layer 13, and this shading piece 15 is located between light shield layer 12 and the reflecting layer 13.This shading piece 15 adopts light tight material to process, and for example black sponge sheet or black rubber sheet are enclosed by shading piece 15, light shield layer 12 and reflecting layer 13 and to form enclosure space, and this LGP 11 is arranged in this enclosure space with this light-emitting component 14.By this; The light that light-emitting component 14 sends is injected in this LGP 11, can in LGP 11, reflect, and reflected by reflecting layer 13; And enclose in the enclosure space of formation owing to LGP 11 is enclosed in shading piece 15,

light shield layer

12 and 13 in reflecting layer, therefore can light leak.

See also embodiment illustrated in fig. 4; This module 10A backlight comprises LGP 11A, light shield layer 12A, reflecting layer 13A, at least one light-emitting component 14A and shading piece 15A; The thickness T 1A of present embodiment shading piece 15A is greater than the thickness T 2A of LGP 11A; The size of reflecting layer 13A is greater than the size of LGP 11A and light shield layer 12A, and shading piece 15A is around the periphery setting of this LGP 11A and light shield layer 12A.Be provided with adhering agent layer in shading piece 15A towards the contact-making surface of this LGP 11A, light shield layer 12A and reflecting layer 13A, use so that shading piece 15A and LGP 11A, light shield layer 12A and reflecting layer 13A bind.

See also embodiment illustrated in fig. 5; This module 10B backlight comprises LGP 11B, light shield layer 12B, reflecting layer 13B, at least one light-emitting component 14B and shading piece 15B; The thickness T 1B of present embodiment shading piece 15B is greater than the thickness T 2B of LGP 11B; The size of light shield layer 12B is greater than the size of LGP 11B and reflecting layer 13B, and shading piece 15B is around the periphery setting of this LGP 11B and reflecting layer 13B.Be provided with adhering agent layer in shading piece 15B towards the contact-making surface of this LGP 11B, light shield layer 12B and reflecting layer 13B, use so that shading piece 15B and LGP 11B, light shield layer 12B and reflecting layer 13B bind.

See also embodiment illustrated in fig. 6; This module 10C backlight comprises LGP 11C, light shield layer 12C, reflecting layer 13C, at least one light-emitting component 14C and shading piece 15C; The thickness T 1C of present embodiment shading piece 15C is greater than the thickness T 2C of LGP 11C, and shading piece 15C centers on the periphery setting of this LGP 11C, light shield layer 12C and this reflecting layer 13C simultaneously.Be provided with adhering agent layer in shading piece 15C towards the contact-making surface of this LGP 11C, light shield layer 12C and reflecting layer 13C, use so that shading piece 15C and LGP 11C, light shield layer 12C and reflecting layer 13C bind.

Above-mentioned is the explanation of different module embodiment backlight, and the architectural feature of the module backlight of the utility model is, encloses the formation enclosure space by shading piece, light shield layer and reflecting layer, LGP is surrounded in this enclosure space, so light can not leak outside.The kenel that is provided with as for shading piece, light shield layer and reflecting layer does not have certain limitation.

See also illuminated keyboard embodiment shown in Figure 7, this illuminated keyboard system is made up of module 10 backlight and keyboard body 20, and this module 10 backlight is made up of LGP 11, light shield layer 12, reflecting layer 13, at least one light-emitting component 14 and shading piece 15.Keyboard body 20 is disposed at the light shield layer 12 of this module 10 backlight with respect to the one side that is provided with LGP 11.This keyboard body 20 comprises substrate 21 and at least one keycap 22, is provided with at least one transparent area 221 in keycap 22 places, and keycap 22 is processed by light tight material, and this transparent area 221 is processed by light-transmitting materials.Between keycap 22 and substrate 21, be provided with syndeton 23, keycap 22 interconnects by syndeton 23 with substrate 21.This syndeton 23 is that two supports, 231,232 intersections articulate the scissors leg structure that is constituted; The top of two supports 231,232 is hubbed at keycap 22 bottoms; The bottom system of two supports 231,232 is hubbed at substrate 21, is respectively equipped with at least one hollow part 211,121 in substrate 21 and these light shield layer 12 corresponding positions, and the light that this light-emitting component 14 is sent can penetrate substrate 21 directive keycap 22 again by hollow part 121,211; Light can be appeared by this transparent area 221, can make this illuminated keyboard luminous.

Embodiment illustrated in fig. 7 with a keycap as illustrative examples; Actual illuminated keyboard has a plurality of keycaps; Its kenel sees also shown in Figure 8; This illuminated keyboard is made up of module 10D backlight and keyboard body 20D, and this module 10D backlight is made up of LGP 11D, light shield layer 12D, reflecting layer 13D, at least one light-emitting component 14D and shading piece 15D.This keyboard body 20D comprises substrate 21D and a plurality of keycap 22D; Be respectively equipped with at least one

hollow part

211D, 121D in substrate 21D and the corresponding position of light shield layer 12D; The light that this light-emitting component 14D is sent can penetrate substrate 21D directive keycap 22D again by

hollow part

121D, 211D; This keycap 22D is provided with the transparent area (not shown), and light is appeared by transparent area, can make whole illuminated keyboard luminous.

In like manner, Fig. 7 and illuminated keyboard shown in Figure 8 can adopt Fig. 4 to module 10A backlight shown in Figure 6～10C example structure.

In sum, module backlight and illuminated keyboard that the utility model provides can reach really and avoid light leak, improve the effect of light utilization rate

The above person only is merely the embodiment of the utility model, can not with the scope implemented of qualification the utility model.The equalization of promptly being done according to the utility model claim scope generally changes and modifies, and all should still belong in the scope that the utility model patent contains.

Claims

1. module backlight is characterized in that comprising:

LGP has end face, bottom surface and continuous periphery, and this end face is with respect to this bottom surface, and this periphery is between this end face and this bottom surface;

Light shield layer is arranged at this end face of this LGP;

The reflecting layer is arranged at this bottom surface of this LGP;

At least one light-emitting component is injected this LGP in order to light to be provided; And

Shading piece, around this periphery setting of this LGP, this shading piece, this light shield layer and this reflecting layer enclose the formation enclosure space, and this LGP is arranged in this enclosure space.

2. module backlight as claimed in claim 1 is characterized in that: this shading piece is located between this light shield layer and this reflecting layer.

3. module backlight as claimed in claim 1 is characterized in that: this shading piece has relative first and second, and this first engages with this light shield layer, and this second engages with this reflecting layer.

4. module backlight as claimed in claim 3 is characterized in that: first of this of this shading piece and this second are provided with adhering agent layer, and be bonding with this light shield layer and this reflecting layer in order to respectively.

5. module backlight as claimed in claim 3 is characterized in that: the thickness of this shading piece is identical with the thickness of this LGP.

6. module backlight as claimed in claim 1 is characterized in that: this light shield layer and this reflecting layer have periphery respectively, and this shading piece centers on the periphery setting of this LGP, and simultaneously around this light shield layer and the periphery setting of one of them at least of this reflecting layer.

7. module backlight as claimed in claim 6 is characterized in that: this shading piece is provided with adhering agent layer towards the contact-making surface in this LGP, this light shield layer and this reflecting layer, in order to bonding with this LGP, this light shield layer and this reflecting layer.

8. module backlight as claimed in claim 1 is characterized in that: this shading piece is black sponge sheet or black rubber sheet.

9. illuminated keyboard is characterized in that comprising:

Like any described module backlight among the claim 1-8; And

The keyboard body, this light shield layer that is disposed at this module backlight is with respect to the one side that is provided with this LGP.

10. illuminated keyboard as claimed in claim 9 is characterized in that: this keyboard body comprises substrate and at least one keycap, between this keycap and this substrate, is provided with syndeton, and this keycap and this substrate interconnect by this syndeton.

11. illuminated keyboard as claimed in claim 10; It is characterized in that: this substrate and the corresponding position of this light shield layer are respectively equipped with at least one hollow part, and the light that this at least one light-emitting component sent can penetrate this substrate by this set at least one hollow part of this substrate and the corresponding position of this light shield layer.