CN201611056U - Backlight module and light emitting keyboard - Google Patents
Backlight module and light emitting keyboard Download PDFInfo
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- CN201611056U CN201611056U CN2010201390168U CN201020139016U CN201611056U CN 201611056 U CN201611056 U CN 201611056U CN 2010201390168 U CN2010201390168 U CN 2010201390168U CN 201020139016 U CN201020139016 U CN 201020139016U CN 201611056 U CN201611056 U CN 201611056U
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Abstract
The utility model discloses a backlight module and a light emitting keyboard with the backlight module. The backlight module comprises a light guide board, a printed-circuit board and an light-emitting diode. The light guide board has a first surface and a second surface relative to the first surface, the printed-circuit board has a third surface and a fourth surface relative to the third surface, and the third surface faces to the second surface of the light guide board. A reflection layer is provided on the third surface of the printed-circuit board for reflecting the light ejected by the light guide board. The light-emitting diode is arranged on the printed-circuit board and is electrically connected to the circuit on the printed-circuit board, the light-emitting diode can transmits a light to the light guide board. The backlight module and light emitting keyboard of the utility model improves the light use ratio and realize the objective of using fewer light-emitting diode to achieve identical light-emitting efficiency, by using a reflecting plate or a reflection layer provided on its printed-circuit board to help light to reflect in the light guide board.
Description
Technical field
The utility model is about a kind of backlight module and illuminated keyboard, and especially, the utility model is about a kind of backlight module and illuminated keyboard that can increase the encapsulation reliability and reduce light emitting diode quantity.
Background technology
In recent years, because the information industry development is rapid, many users may use portable massaging device, for example mobile computer or personal digital assistant etc. under varying environment.At the more weak environment of light, projector's bulletin occasion for example, the user may not see numeral and the literal that is indicated on Chu's keyboard, causes operational difficulty.
See also Fig. 1, Fig. 1 illustrates the profile of the illuminated keyboard 1 of prior art.As shown in Figure 1, illuminated keyboard 1 has Keysheet module 10 and backlight module 12, and wherein Keysheet module 10 can be arranged on the backlight module 12.Backlight module 12 has light emitting source 120 and is arranged in the LGP 122, and light emitting source 120 can be electrically connected printed circuit board (PCB) (not being illustrated among the figure) and the incident LGP 122 that emits beam by printed circuit board (PCB) control.Light is advanced in LGP 122, and is reflected by LGP 122 and can transmit in LGP 122.The one side of LGP 122 can be set up reflection subassembly 1220 with reflection ray, makes light can pass LGP 122 and advance to use towards Keysheet module 10 to allow the user observe light.
The used light emitting source 120 of Fig. 1 is side-light types, that is, be arranged at the side of LGP 122 and from its side incident ray as the light emitting source 120 of light emitting diode.
Yet the light emitting source of side-light type is higher in the quantitative demand of light emitting diode, that is the manufacturing cost of the light emitting source of side-light type is higher.
The utility model content
Therefore, a purpose of the present utility model is to provide a kind of go up beat formula or the following backlight module of beating formula, with respect to the side-light type light source, on beat the formula backlight module or the following formula backlight module of beating can reach identical luminous efficiency with less light emitting diode.
According to specific embodiment, backlight module of the present utility model comprises LGP, printed circuit board (PCB) and light emitting diode.LGP has first and with respect to first second, printed circuit board (PCB) then has the 3rd and the fourth face with respect to the 3rd, be provided with the reflecting layer between second of the 3rd of wherein the 3rd of printed circuit board (PCB) the in the face of LGP second, and this printed circuit board (PCB) and this LGP.Light emitting diode is arranged on the printed circuit board (PCB) to electrically connect the circuit on it, and light emitting diode can be launched light to LGP.
Wherein, this light emitting diode is arranged on the 3rd of this printed circuit board (PCB).
Wherein, this LGP comprises depressed part, and this diode portion branch is contained in this depressed part.
Wherein, this printed circuit board (PCB) comprises hole, and this light emitting diode is arranged on this fourth face of this printed circuit board (PCB) and to position that should hole, this light that this light emitting diode sent passes this hole to this LGP.
Wherein, further comprise reflecting plate, this first of contiguous this LGP.
Wherein, this printed circuit board (PCB) is transparent printed circuit board (PCB), second light that is sent of this LGP sees through this transparent printed circuit board (PCB), and perhaps this printed circuit board (PCB) comprises at least the first hole, and the light portion that second face of this LGP sends sees through this first hole of this printed circuit board (PCB).
Wherein, further comprise shade, this fourth face of contiguous this printed circuit board (PCB).
Wherein, further comprise shade, this first of contiguous this LGP.
Reflecting layer by on the 3rd of printed circuit board (PCB) can help LGP to reflect, and therefore, the light that light emitting diode is launched can be advanced in LGP.
Another purpose of the present utility model is to provide a kind of illuminated keyboard, and it has new-type backlight module, can solve the problem of prior art.
According to specific embodiment, illuminated keyboard of the present utility model comprises backlight module and Keysheet module.Backlight module further comprises LGP, printed circuit board (PCB) and light emitting diode.LGP has first and with respect to first second, printed circuit board (PCB) then has the 3rd and the fourth face with respect to the 3rd, be provided with the reflecting layer between second of the 3rd of wherein the 3rd of printed circuit board (PCB) the in the face of LGP second, and this printed circuit board (PCB) and this LGP.Light emitting diode is arranged on the printed circuit board (PCB) to electrically connect the circuit on it, and light emitting diode can be launched light to LGP.Keysheet module is arranged on the backlight module.
Wherein, this Keysheet module comprises substrate, and this substrate has holes, and this keycap has transparent area, and the light of this backlight module shines this transparent area by this holes; Perhaps this Keysheet module comprises transparency carrier, and this keycap has transparent area, and the light of this LGP shines this transparent area by this transparency carrier.
Another purpose of the present utility model is to provide a kind of new-type backlight module, can solve the problem of prior art.
According to concrete entity example, backlight module of the present utility model comprises printed circuit board (PCB), reflecting plate, LGP, light emitting diode and shade.First of the corresponding printed circuit board (PCB) of reflecting plate and be provided with, and reflecting plate has second first in the face of printed circuit board (PCB), and in addition, reflecting plate has relative second reflecting surface and first hole.The reflecting surface of LGP near reflection plate, it has the 3rd reflecting surface and the fourth face with respect to the 3rd in the face of reflecting plate.Light emitting diode is arranged on the printed circuit board (PCB) and electrically connects with circuit on the printed circuit board (PCB), its in order to emission light to second of reflecting plate and penetrate first hole and arrive the 3rd of LGP.The fourth face of the contiguous LGP of shade, its in order to partial reflection from the emitted light of LGP fourth face.
Wherein, this light emitting diode is arranged on this first of this printed circuit board (PCB).
Wherein, this printed circuit board (PCB) comprises second hole and with respect to this first the 5th, wherein this light emitting diode is arranged at the 5th of this printed circuit board (PCB) and goes up and to position that should second hole, this light that this light emitting diode sent passes this second hole this first hole to this reflecting plate.
Reflecting surface by this reflecting plate can help LGP to reflect, and therefore, the light that light emitting diode is launched can be advanced in LGP.
Another purpose of the present utility model is to provide a kind of new-type backlight module, can solve the problem of prior art.
According to specific embodiment, backlight module of the present utility model comprises printed circuit board (PCB), LGP, reflecting plate, light emitting diode and shade.First of printed circuit board (PCB) tool and with respect to first second.LGP is with respect to first setting of printed circuit board (PCB), and it has the 3rd and the fourth face with respect to the 3rd, wherein faces first for the 3rd.The contiguous LGP of reflecting plate, and it has the fourth face of reflecting surface in the face of LGP.Light emitting diode is arranged on the printed circuit board (PCB), can be in order to launch light the 3rd to LGP.Shade intercepts from second emitted light of printed circuit board (PCB) with part near second of printed circuit board (PCB).
Wherein, this printed circuit board (PCB) is transparent printed circuit board (PCB), and the light that this LGP sends penetrates by this transparent printed circuit board (PCB); Perhaps this printed circuit board (PCB) comprises at least the first hole, and the light that this LGP sends penetrates by this first hole.
Wherein, this light emitting diode is arranged on this first of this printed circuit board (PCB).
Wherein, this printed circuit board (PCB) has second hole, this light emitting diode is arranged at this second of this printed circuit board (PCB) and goes up and to position that should second hole, and this light that this light emitting diode sent passes this second hole the 3rd to this LGP.
Reflecting surface by reflecting plate can help LGP to reflect, and therefore, the light that light emitting diode is launched can be advanced in LGP.
For foregoing of the present utility model can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. elaborate.
Description of drawings
Fig. 1 illustrates the profile of the illuminated keyboard of prior art.
Fig. 2 A illustrates the schematic diagram according to the illuminated keyboard of specific embodiment of the utility model.
Fig. 2 B illustrates the schematic diagram according to the backlight module of Fig. 2 A.
Fig. 3 illustrates the schematic diagram according to the illuminated keyboard of another specific embodiment of the present utility model.
Fig. 4 illustrates the schematic diagram according to another concrete illuminated keyboard of implementing of the present utility model.
Fig. 5 illustrates the schematic diagram according to the backlight module of another specific embodiment of the present utility model.
Fig. 6 illustrates the schematic diagram according to the backlight module of another specific embodiment of the present utility model.
The specific embodiment
See also Fig. 2 A, Fig. 2 A illustrates the schematic diagram according to the illuminated keyboard 2 of specific embodiment of the utility model.Shown in Fig. 2 A, illuminated keyboard 2 comprises backlight module 20 and Keysheet module 22, and wherein, Keysheet module 22 is arranged on the backlight module 20, and the light that backlight module 20 is sent can allow the user can observe light by Keysheet module 22.Backlight module 20 shown in Fig. 2 A can be considered beats the formula backlight module.
In this specific embodiment, backlight module 20 can comprise LGP 200, printed circuit board (PCB) 202 and light emitting diode 204.LGP has relative to each other first 2000 and second 2002, and 202 of printed circuit board (PCB)s have the 3rd 2020 and fourth face 2022 relative to each other.The 3rd 2020 in the face of LGP 200 second 2002, and be provided with on it reflecting layer 2024 with reflection by the emitted light of LGP 200.In practice, the reflecting layer can be, but is not subject to, and white paint, metallic film, aluminizes or macromolecule.Light emitting diode 204 is arranged on the 3rd 2020 of printed circuit board (PCB) 202, and electrically connects with the circuit of printed circuit board (PCB) 202 (be not illustrated in graphic in), and light emitting diode 204 can be printed circuit board 202 controls and emission light to LGP 200.Note that only to show a light emitting diode in this specific embodiment, yet in practice, the quantity that light emitting diode is provided with can be decided according to user or designer's demand, is not limited to this specific embodiment.
Because the light emitting diode 204 of this specific embodiment is arranged on the 3rd 2020 of printed circuit board (PCB) 202, therefore, LGP 200 can comprise a depressed part 2004, the position of its position respective leds 204.When backlight module 20 assemblings, LGP 200 can be arranged on the printed circuit board (PCB) 202, and 204 parts of light emitting diode are contained among the depressed part 2004, and shown in Fig. 2 B, Fig. 2 B illustrates the schematic diagram according to the backlight module 20 of Fig. 2 A.
Please consult Fig. 2 A again, backlight module 20 can further comprise shade 206 and be arranged between LGP 200 and the Keysheet module 22.But shade 206 in practice partial reflection from first 2000 of LGP 200 emitted light.Shade 206 has transparent area 2060 allows light pass through.Transparent area 2060 can use transparent material or holes mode allow light penetration, and for example, the transparent area of Fig. 2 A 2060 is made with transparent material, and 2060 of the transparent areas of Fig. 2 B are a holes.
In this specific embodiment, light emitting diode 204 can be towards LGP 200 emission light.Light is advanced in LGP 200 and is arrived first 2000 of LGP, and wherein, part light is reflected and first 2000 of part light penetration.The light that penetrates first 2000 can arrive shade 206, and 206 of shades allow light penetration to Keysheet module 22 and in other position light be absorbed or reflection in transparent area 2060.Note that in practice this shade also can omit and finish the function of above-mentioned shade by the iron plate structure of Keysheet module.
Can in LGP 200, advance by first 2000 of LGP 200 reflection or by the light that shade 206 reflects towards printed circuit board (PCB) 202.When light arrived the reflecting layer 2024 of second 2002 of LGP 200 or printed circuit board (PCB) 202, light can be reflected once again and advance towards Keysheet module 22.
By said structure, light emitting diode can be arranged at the front of LGP, and advances with reflection way in LGP.The method of light emitting source is set in the LGP side compared to prior art, the light that its light emitting source of backlight module of this specific embodiment is sent is reflected equally easily and can transmits in LGP, and it has higher encapsulation reliability and lower production cost.
In this specific embodiment, Keysheet module 22 can comprise substrate 220 and be arranged at keycap 222 on the substrate 220, and wherein, substrate 220 has holes 2200 and keycap 222 has transparent area 2220.The light that light emitting diode 204 is sent can arrive substrate 220 after passing LGP 200 and shade 206, and can be via the transparent area 2220 of holes 2200 irradiation keycaps 222, and the user that further can make way for keycap 222 tops observes light.The printing opacity design that note that substrate is not restricted to holes, but decides according to user or designer's demand.For example, in another specific embodiment, substrate can transparent material constitutes and is transparency carrier, and can pass this transparency carrier and shine the transparent area of keycap from the light that LGP sent.
The light emitting diode 204 of this specific embodiment is arranged on the 3rd 2020 of printed circuit board (PCB) 202, so on the LGP 200 depressed part 2004 need be set during backlight module 20 assemblings and hold light emitting diode 204 with part.Yet the position of light emitting diode (light emitting source) is not limited to this specific embodiment.
See also Fig. 3, Fig. 3 illustrates the schematic diagram according to the illuminated keyboard 3 of another specific embodiment of the present utility model, as shown in Figure 3, does not exist together with above-mentioned specific embodiment, is that the printed circuit board (PCB) 302 of the backlight module 30 of this specific embodiment can comprise hole 3026.Light emitting diode 304 is arranged on the fourth face 3022 of printed circuit board (PCB) 302 and the position of corresponding hole 3026.The exiting surface of the light emitting diode 304 of this specific embodiment is in the face of hole 3026, and therefore the light of being launched can pass hole 3026 and arrive LGP 300.Other unit of the illuminated keyboard 3 of this specific embodiment is identical substantially with the corresponding unit of above-mentioned specific embodiment, so repeat no more in this.Because light emitting diode 304 is arranged on the fourth face 3022 of printed circuit board (PCB), so LGP 300 does not need to be provided with in addition depressed part to hold light emitting diode 304.In addition, shade 306 has a transparent area 3060 and allows light pass through.Similarly, transparent area 3060 can use holes or transparent material mode to allow light pass through in the practice, transparent area 3,060 1 holes in this specific embodiment.
See also Fig. 4, Fig. 4 illustrates the schematic diagram according to another concrete illuminated keyboard of implementing 4 of the present utility model.As shown in Figure 4, the backlight module 40 of illuminated keyboard 4 comprises LGP 400, printed circuit board (PCB) 402 and light emitting diode 404.Each unit of the backlight module 40 of this specific embodiment is identical substantially with the corresponding unit of above-mentioned specific embodiment, so repeat no more in this.Backlight module 40 further comprises first 4000 of reflecting plate 406 contiguous LGPs 400, and Keysheet module 42 is positioned on the fourth face 4022 of printed circuit board (PCB) 402.Backlight module 40 shown in Figure 4 can be considered the following formula backlight module of beating.
In this specific embodiment, light emitting diode 404 electrically connects with printed circuit board (PCB) 402, and light emitting diode 404 can be contained in the depressed part 4004 of LGP 400, the light incident LGP 400 that light emitting diode 404 is sent, when light marches to first 4000 of LGP 400 in LGP 400, part light can be reflected and part light penetration LGP 400, and then, the light that penetrates out LGP 400 plate 406 that can be reflected again reflects and gets back to LGP 400.Note that in practice reflecting plate also can directly be arranged at first of LGP and go up and directly reflect most of light, so light does not need to pass LGP again and marches to reflecting plate.
The light that the plate 406 that is reflected is reflected is advanced towards printed circuit board (PCB) 402 in LGP 400, and is reflected by second 4002 of LGP 400 or reflecting layer 4024 again, so light can transmit in LGP 400.In addition, reflecting layer 4024 has transparent area 40240 and allows light pass through.Transparent area 40240 can use holes or transparent material mode to allow light pass through.First hole, 4028 corresponding transparent areas 40240 can be set respectively on the printed circuit board (PCB) 402, cause light can arrive Keysheet module 42 by first hole 4028 penetrates printed circuit board (PCB) 402.Note that in practice printed circuit board (PCB) can also transparent material constitutes and is a transparent printed circuit board (PCB), does not pass through for light so do not need to be provided with in addition first hole.
Similarly, light emitting diode also can be arranged at the fourth face of printed circuit board (PCB) and second hole on the corresponding printed circuit board (PCB) in another specific embodiment.The light that light emitting diode sent passes second hole and arrives LGP, and light advanced towards printed circuit board (PCB) by behind first of LGP or the baffle reflection again, can be reflected by second of LGP or reflecting layer afterwards.In ad-hoc location, the reflecting layer can allow light pass through, and corresponding this ad-hoc location of printed circuit board (PCB) can be provided with first hole for light penetration.In addition, printed circuit board (PCB) can transparent material constitutes and is transparent printed circuit board (PCB), so do not need to be provided with in addition first hole and second hole passes through for light.
Identical with above-mentioned specific embodiment, the light penetration printed circuit board (PCB) 402 that light emitting diode 404 sent of this specific embodiment and arrive and pass Keysheet module 42, the user then can see through the transparent area 4220 of keycap 422 observe light.
The structure that the reflecting layer helps light to reflect in LGP is set on the above-mentioned printed circuit board (PCB), can also replaces the reflecting layer by reflecting plate.See also Fig. 5, Fig. 5 illustrates the schematic diagram according to the backlight module 50 of another specific embodiment of the present utility model.As shown in Figure 5, backlight module 50 comprises printed circuit board (PCB) 500, reflecting plate 502, LGP 504, light emitting diode 506 and shade 508.Printed circuit board (PCB) 500 has first 5000, first 5000 of 502 correspondence of reflecting plate and being provided with, and it has second 5020 in the face of first 5000 of printed circuit board (PCB) 500, reflecting surface R1 and first hole 5022.LGP 504 near reflection plates 502, it has the 3rd 5040 reflecting surface R1 and the fourth face 5042 in the face of reflecting plate 502.Shade 508 is adjacent to the fourth face 5042 of LGP 504.Light emitting diode 506 can be arranged on first 5000 of printed circuit board (PCB) 500 and electrically connect with circuit on it.Light emitting diode 506 electrically connects with printed circuit board (PCB) 500, and light emitting diode 506 can be contained in the depressed part 5044 of LGP 504.
The light that light emitting diode 506 is sent can pass first hole 5022 of reflecting plate 502 and arrive the 3rd 5040 of LGP 504, and then, light can be reflected by the 3rd 5040, fourth face 5042 or shade 508 and advance towards reflecting plate 502.The reflecting surface R1 of reflecting plate 502 reflects the light that the 3rd 5040, fourth face 5042 or shade 508 are reflected again, and it is advanced towards shade 508.In practice, shade 508 has transparent area 5080 can allow light pass through, and causes light can arrive Keysheet module.Similarly, transparent area 5080 can adopt transparent material or holes mode to allow light pass through in the practice, and transparent area 5080 is made with transparent material in this specific embodiment.
Similarly, this specific embodiment light emitting diode in practice, also can be arranged at printed circuit board (PCB) with respect on first the 5th, its light that sends then can pass second hole that is arranged at printed circuit board (PCB) or this arrives at reflecting plate as the printed circuit board (PCB) of transparent material.
See also Fig. 6, Fig. 6 illustrates the schematic diagram according to the backlight module 60 of another specific embodiment of the present utility model.As shown in Figure 6, backlight module 60 comprises printed circuit board (PCB) 600, reflecting plate 602, LGP 604, light emitting diode 606 and shade 608.Printed circuit board (PCB) 600 has first 6000 and second 6002, and LGP 604 has the 3rd 6,040 first 6000 in the face of printed circuit board (PCB) 600, and the fourth face 6042 with respect to the 3rd 6040.Reflecting plate 602 contiguous LGPs 604 and its reflecting surface R2 are in the face of the fourth face 6042 of LGP 604.Shade 608 is adjacent to second 6002 of printed circuit board (PCB) 600.Light emitting diode 606 can be arranged on first 6000 of printed circuit board (PCB) 600 and electrically connect with circuit on it.Light emitting diode 606 electrically connects with printed circuit board (PCB) 600, and light emitting diode 606 can be contained in the depressed part 6044 of LGP 604.
The light that light emitting diode 606 is sent can pass LGP 604 and be reflected by the reflecting surface R2 of the 3rd 6040 of LGP 604, fourth face 6042 and reflecting plate 602.In this specific embodiment, printed circuit board (PCB) 600 is transparent printed circuit board (PCB), and therefore, the light that is reflected can be again reflects via the 3rd 6040 of LGP 604 and shade 608.By reflecting plate 602 and shade 608, light can produce reflection and advance in LGP 604.In addition, in practice, shade 608 has transparent area 6080 can allow light pass through, and causes light can arrive Keysheet module.Similarly, transparent area 6080 can adopt transparent material or holes mode to allow light pass through, and transparent area 6080 is made with transparent material in this specific embodiment.
In sum, backlight module of the present utility model can help the light reflection by reflecting plate or the reflecting layer that is provided with on its printed circuit board (PCB), and therefore, backlight modular structure of the present utility model can be provided with light emitting source in the front of LGP.Compared to prior art, backlight module of the present utility model is except having the advantage that is reflected easily and can transmits in LGP, and the light emitting source of positive light formula has higher encapsulation reliability and lower production cost.
By the detailed description of the above preferable specific embodiment, hope can be known description feature of the present utility model and spirit more, and is not to come claim scope of the present utility model is limited with the above-mentioned disclosed preferable specific embodiment.On the contrary, its objective is that hope can contain in the scope of the claim that is arranged in the desire application of the utility model institute of various changes and tool equality.
Claims (17)
1. a backlight module is applicable to illuminated keyboard, it is characterized in that this backlight module comprises:
LGP has first and with respect to this first second;
Printed circuit board (PCB) has the 3rd and the fourth face with respect to the 3rd, is provided with the reflecting layer between the 3rd in the face of this second of this LGP and the 3rd and this LGP this second; And
Light emitting diode is arranged at this printed circuit board (PCB) and electrically connects with circuit on this printed circuit board (PCB), and wherein this light emitting diode is launched a light to this LGP.
2. backlight module as claimed in claim 1 is characterized in that: this light emitting diode is arranged on the 3rd of this printed circuit board (PCB).
3. backlight module as claimed in claim 1 is characterized in that: this LGP comprises depressed part, and this diode portion branch is contained in this depressed part.
4. backlight module as claimed in claim 1, it is characterized in that: this printed circuit board (PCB) comprises hole, and this light emitting diode is arranged on this fourth face of this printed circuit board (PCB) and to position that should hole, this light that this light emitting diode sent passes this hole to this LGP.
5. backlight module as claimed in claim 1 is characterized in that: further comprise reflecting plate, this first of contiguous this LGP.
6. backlight module as claimed in claim 5, it is characterized in that: this printed circuit board (PCB) is transparent printed circuit board (PCB), second light that is sent of this LGP sees through this transparent printed circuit board (PCB), perhaps this printed circuit board (PCB) comprises at least the first hole, and the light portion that second face of this LGP sends sees through this first hole of this printed circuit board (PCB).
7. backlight module as claimed in claim 5 is characterized in that: further comprise shade, this fourth face of contiguous this printed circuit board (PCB).
8. backlight module as claimed in claim 1 is characterized in that: further comprise shade, and this first of contiguous this LGP, this shade is in order to the light of partial reflection from this first ejaculation.
9. illuminated keyboard is characterized in that comprising:
As any described backlight module in the claim 1 to 8; And
Keysheet module is arranged on this backlight module.
10. illuminated keyboard as claimed in claim 9 is characterized in that: this Keysheet module comprises substrate, and this substrate has holes, and this keycap has transparent area, and the light of this backlight module shines this transparent area by this holes; Perhaps this Keysheet module comprises transparency carrier, and this keycap has transparent area, and the light of this LGP shines this transparent area by this transparency carrier.
11. a backlight module is characterized in that comprising:
Printed circuit board (PCB) has first;
Reflecting plate, corresponding to this first setting, this reflecting plate has in the face of this first second, with respect to this second the reflecting surface and first hole;
LGP, this reflecting surface of contiguous this reflecting plate, this LGP has the 3rd and the fourth face with respect to the 3rd in the face of this reflecting surface;
Light emitting diode is arranged on this printed circuit board (PCB) and electrically connects with circuit on this printed circuit board (PCB), and the light of this light emitting diode emission passes this first hole and arrives the 3rd; And
Shade, contiguous this fourth face, this shade is in order to the light of partial reflection from this fourth face ejaculation of this LGP.
12. backlight module as claimed in claim 11 is characterized in that: this light emitting diode is arranged on this first of this printed circuit board (PCB).
13. backlight module as claimed in claim 11, it is characterized in that: this printed circuit board (PCB) comprises second hole and with respect to this first the 5th, wherein this light emitting diode is arranged at the 5th of this printed circuit board (PCB) and goes up and to position that should second hole, this light that this light emitting diode sent passes this second hole this first hole to this reflecting plate.
14. a backlight module is characterized in that comprising:
Printed circuit board (PCB) has first and with respect to this first second;
LGP, with respect to this first setting, this LGP has in the face of this first the 3rd and the 3rd fourth face relatively;
Reflecting plate has reflecting surface, and this reflecting surface is in the face of this fourth face of this LGP;
Light emitting diode is arranged on this printed circuit board (PCB), and this light emitting diode emission light is to the 3rd of this LGP; And
Shade, contiguous this second, this shade is in order to the light of part obstruct from second ejaculation of this printed circuit board (PCB).
15. backlight module as claimed in claim 14 is characterized in that: this printed circuit board (PCB) is transparent printed circuit board (PCB), and the light that this LGP sends penetrates by this transparent printed circuit board (PCB); Perhaps this printed circuit board (PCB) comprises at least the first hole, and the light that this LGP sends penetrates by this first hole.
16. backlight module as claimed in claim 14 is characterized in that: this light emitting diode is arranged on this first of this printed circuit board (PCB).
17. backlight module as claimed in claim 14, it is characterized in that: this printed circuit board (PCB) has second hole, this light emitting diode is arranged at this second of this printed circuit board (PCB) and goes up and to position that should second hole, and this light that this light emitting diode sent passes this second hole the 3rd to this LGP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201390168U CN201611056U (en) | 2010-03-03 | 2010-03-03 | Backlight module and light emitting keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201390168U CN201611056U (en) | 2010-03-03 | 2010-03-03 | Backlight module and light emitting keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201611056U true CN201611056U (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201390168U Expired - Lifetime CN201611056U (en) | 2010-03-03 | 2010-03-03 | Backlight module and light emitting keyboard |
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| CN (1) | CN201611056U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347299A (en) * | 2013-08-05 | 2015-02-11 | 致伸科技股份有限公司 | Light emitting keyboard and light guide plate module thereof |
| EP2869676A1 (en) * | 2013-10-31 | 2015-05-06 | Hendrikus A. Le Sage | Transparent illuminated display system for automobiles |
| CN105094216A (en) * | 2014-05-13 | 2015-11-25 | 联想(北京)有限公司 | Electronic equipment |
| CN107818884A (en) * | 2016-09-13 | 2018-03-20 | 光宝电子(广州)有限公司 | Straight-down negative illuminated keyboard |
| CN109958888A (en) * | 2017-12-22 | 2019-07-02 | 德韧营运有限责任公司 | It is laminated light guide and assembly carrier |
| CN111243458A (en) * | 2020-03-31 | 2020-06-05 | 深圳市泛海三江电子股份有限公司 | Light guide plate assembly, method and product of underground sign lamp |
-
2010
- 2010-03-03 CN CN2010201390168U patent/CN201611056U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104347299A (en) * | 2013-08-05 | 2015-02-11 | 致伸科技股份有限公司 | Light emitting keyboard and light guide plate module thereof |
| CN104347299B (en) * | 2013-08-05 | 2017-04-12 | 致伸科技股份有限公司 | Light emitting keyboard and light guide plate module thereof |
| EP2869676A1 (en) * | 2013-10-31 | 2015-05-06 | Hendrikus A. Le Sage | Transparent illuminated display system for automobiles |
| CN105094216A (en) * | 2014-05-13 | 2015-11-25 | 联想(北京)有限公司 | Electronic equipment |
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| CN109958888A (en) * | 2017-12-22 | 2019-07-02 | 德韧营运有限责任公司 | It is laminated light guide and assembly carrier |
| CN111243458A (en) * | 2020-03-31 | 2020-06-05 | 深圳市泛海三江电子股份有限公司 | Light guide plate assembly, method and product of underground sign lamp |
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