CN1453600A

CN1453600A - Luminous component, manufacturing method thereof, and luminous keyboard using the component

Info

Publication number: CN1453600A
Application number: CN 02118404
Authority: CN
Inventors: 江治湘
Original assignee: Darfon Electronics Corp
Current assignee: Darfon Electronics Corp
Priority date: 2002-04-24
Filing date: 2002-04-24
Publication date: 2003-11-05

Abstract

The present invention provides a light emitting member and a method of manufacturing the same, the light emitting member including: a light source, a light guide substrate, a reflective layer and a plurality of optical fibers. The reflecting layer is a reflecting film sputtered or adhered on the front surface of the light guide substrate, one end of the optical fiber is adhered to the light source, and the other end is connected to one side surface of the light guide substrate in a parallel arrangement mode. The light source is a Light Emitting Diode (LED), the light guide substrate is manufactured by injection molding, and the optical fiber is embedded in the light guide substrate.

Description

Illuminated component and manufacture method thereof and the illuminated keyboard that utilizes this member

Invention field

The illuminated keyboard that the present invention relates to a kind of illuminated component and manufacture method thereof and utilize this member particularly relates to a kind of illuminated component that makes its manufacture process simplify and reduce cost.

Background technology

Illuminated component can be used in aspects such as demonstration, decoration, illumination, and progress along with science and technology, illuminated component miscellaneous is suggested, except the luminescence efficiency of how to promote illuminated component, how to make the target that its manufacture process is simplified and the research staff especially of reducing cost makes great efforts.

In research of the present invention, be to improve by a light guide plate and the illuminated component that a plurality of light source constituted that is arranged at the light guide plate periphery at a kind of.With reference to the 1st figure, the 1st figure is the synoptic diagram of existing illuminated component.In the past, this type of illuminated component 10 comprises a light guide plate 11 and a plurality of light source 12, and light source 12 is the periphery that is arranged at light guide plate 11 respectively.

Generally speaking, present electronic product such as keyboard, existing more and more toward the trend of compact development, the assembly that therefore is used in these electronic products promptly is particular about compact characteristic very much.When illuminated component 10 is applied in this electronic product, be badly in need of reaching these characteristics, also light guide plate can be tried one's best thin typeization to reach above-mentioned requirements.Yet light source all has certain thickness usually, when light source is configured in thin type light guide plate periphery, can cause the light losing that feeds in the light guide plate, makes the light source of illuminated component to utilize fully.

Summary of the invention

In view of this, the objective of the invention is the illuminated keyboard a kind of illuminated component and manufacture method thereof to be provided and to utilize this member in order to address the above problem, it can make manufacture process simplify and reduce cost.

For reaching above-mentioned purpose, the invention provides a kind of manufacture method of illuminated component, its step comprises: a light guide base plate is provided, many optical fiber are provided again, make an end of these optical fiber connect a side of this light guide base plate in the mode that is arranged in parallel; One light source is provided, makes the other end bunchy of these optical fiber and connect this light source.

The present invention provides a kind of illuminated component in addition, and this illuminated component comprises: a light source, a light guide base plate, a reflection horizon and many optical fiber.One end of optical fiber is to be connected on the side of light guide base plate in the mode that is arranged in parallel, and the other end is bunchy and be connected in this light source then.This light source is a light emitting diode (LED) in a preferred embodiment, and this light guide base plate is with the injection molding manufacturing, and optical fiber is embedded in the light guide base plate.This light guide base plate more comprises a reflection horizon, and this reflection horizon is to be arranged at one first of this light guide base plate in the mode of sputter or printing.

The present invention provides a kind of illuminated keyboard in addition, comprising: a keypad portion and an illuminated component, this keypad portion have a base plate and at least one button, and wherein this button is to be arranged on this base plate in the mode that this base plate relatively moves up and down.Illuminated component then is arranged under the keypad portion, and it comprises: a light source, a light guide base plate and many optical fiber.One end of optical fiber is to be connected on the side of light guide base plate in the mode that is arranged in parallel, and the other end of optical fiber then bunchy is connected in this light source.

For above and other objects of the present invention, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and cooperate appended diagram, be described in detail below:

The simple declaration of accompanying drawing

Figure 1A is the top view of existing illuminated component;

Figure 1B is the side view of existing illuminated component;

Fig. 2 is the process flow diagram of the manufacture method of illuminated component of the present invention;

Fig. 3 A is the synoptic diagram of illuminated component of the present invention;

Fig. 3 B is the synoptic diagram of the illuminated component of another embodiment of the present invention;

Fig. 3 C is the partial section view of illuminated component of the present invention;

Fig. 3 D is the partial section view of the illuminated component of another embodiment of the present invention;

Fig. 4 A is the synoptic diagram that utilizes the illuminated keyboard of illuminated component of the present invention; And

Fig. 4 B is the sectional view that utilizes the illuminated keyboard of illuminated component of the present invention.

The symbol description of accompanying drawing:

10～illuminated component

11～substrate

12～light source

20～illuminated component

21～light guide base plate

22～reflection horizon

23,23a, 23b, 23c～light source

24,24a, 24b, 24c～fibre bundle

241～optical fiber

2411～fiber optic core

2412～coating layer

26～light

30～illuminated keyboard

31～keypad portion

311a～plastic sheeting

311～elastic parts

312～base plate

3121～fixed sturcture

3122～the first through holes

313～film circuit board

314～keycap

315～scissor structure

316～wall

Detailed description of the preferred embodiment

Please refer to Fig. 2, Fig. 2 is the process flow diagram of the manufacture method of illuminated component of the present invention.At first, provide a light guide base plate (S21), wherein light guide base plate has the positive and side that is adjacent; Then, many optical fiber are provided, and an end that makes these optical fiber simultaneously is connected in the side (S22) of light guide base plate in the mode that is arranged in parallel, and provides a reflection horizon (S23) in the front of light guide base plate, one light source is provided again, makes the other end bunchy of optical fiber and be connected in light source (S24).

The illuminated component 20 that gets by the said method manufacturing is shown in the 3A～3D figure, please refer to Fig. 3 A, and Fig. 3 A is the synoptic diagram of illuminated component of the present invention, and it comprises a light guide base plate 21, a reflection horizon 22, a light source 23 and many optical fiber 241; Reflection horizon 22 is arranged at a front of light guide base plate, and an end of many optical fiber 241 system is arranged in parallel and is connected with the side of light guide base plate 21, and the other end of optical fiber 241 then is gathered into a fibre bundle 24, and is fitted and connected in light source 23.

Please refer to Fig. 3 B, in the another embodiment of the present invention mode, optical fiber 241 can be divided into several groups, and is combined into fibre bundle 24a separately, 24b, and 24c fits in different light source 23a more respectively, 23b, 23c so just can provide a kind of illuminated component 20 of more high brightness.

Please refer to Fig. 3 A and Fig. 3 C, Fig. 3 C is the partial section view of illuminated component of the present invention.In the preferred embodiments of the present invention, this light source 23 is a LED; Optical fiber 241 is made of a fiber optic core 221 and a coating layer 2412 that surrounds fiber optic core 2411, one end of optical fiber 241 is gathered into a fibre bundle 24, and be fitted and connected on LED, the other end then is encapsulated on the side of light guide base plate 21 with glue, and the light 26 that LED is sent conducts in the light guide base plate 21 via optical fiber 241.

In the another embodiment of the present invention mode, when making light guide base plate 21, can earlier an end of many optical fiber 241 be placed the edge of plate shape mould in horizontal mode, make this light guide base plate 21 with injection molding again, make an end of optical fiber 241 be embedded in the side of light guide base plate 21, shown in Fig. 3 D sectional view, so the light 26 that light source sent can be directly conducted in the light guide base plate 21 via optical fiber 241, light guide base plate 21 is material such as Acrylic, PC (Poly Carbonate) or the ABS that can be light guide plate herein.

In the preferred embodiments of the present invention, reflection horizon 22 can be coated on the mode of sputter reflectorized material on the front of light guide base plate 21, or the reflection horizon is printed on the front of light guide base plate 21 in the mode of printing; And the also available reflective film of another kind of embodiment is overlying on the leaded light sticker on the front of light guide base plate 21, and the light in the light guide base plate 21 is reflected away via reflection horizon 22.

Illuminated component of the present invention can be applied in the luminous therein device of various needs, below illustrates as example with an illuminated keyboard.

The illuminated keyboard 30 that utilizes illuminated component 20 gained of the present invention is shown in 4A, 4B figure, comprises a keypad portion 31 and an above-mentioned illuminated component 20; It should be noted: in the keyboard of reality, also be provided with other assemblies such as upper casing, drain pan,, do not draw at this for simplified.

Keypad portion 31 is arranged on the drain pan (not shown) of illuminated keyboard 30, and it has a base plate 312, a film circuit board (membrane circuit board) 313, at least one keycap 314, at least one elastic parts 311 and at least one scissor structure 315; Base plate 312 is provided with the fixed sturcture 3121 of a plurality of projections, the one end system of scissor structure 315 is linked on the fixed sturcture 3121 of base plate 312, the other end is linked to the bottom side of keycap 314, so that keycap 314 relatively base plate 312 move up and down, elastic parts 311 be arranged at film circuit board 313 and keycap 314 between, with to upper support keycap 314, base plate 312 is provided with first through hole 3122 in relative resilient assembly 311 places, and optionally fill with a leaded light wall 316, film circuit board 313 is with leaded light plastic material, made as PE (polyester).In addition, elastic parts 311 also can be linked to the last convenience with the assembling of increase keyboard of a plastic sheeting (Mylar) 311a, or with a plurality of elastic parts 311 one-body molded one-tenth one elastic parts layers, to be arranged on the film circuit board 313.

Illuminated component 20 is arranged under the keypad portion 31, and an end of the optical fiber in the illuminated component 20 241 is gathered into a fibre bundle 24, and connect a light source 23 or multiple light courcess (shown in Fig. 3 B), so that the light of light source 23 conducts in the light guide base plate 21 (light guide plate) fully via optical fiber 241.By above-mentioned framework, when light 26 was advanced in light guide base plate 21 and contacted with reflecting part 22, light can or reflex on the keypad portion 31 via refraction, and provided illuminated keyboard 30 required brightness.

As above-mentioned, in present embodiment, illuminated component 20 of the present invention lies in when making light guide base plate 21, a side that will the optical fiber 241 close be arranged at simultaneously light guide plate with light guide plate in the mode of injection molding, and the other end of optical fiber 241 assembled bunchy to connect light source 26, so can allow the light of light source 26 utilize to light guide plate fully.

Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; those skilled in the art can make some and change and retouching without departing from the spirit and scope of the present invention, so protection scope of the present invention should be looked the accompanying Claim person of defining and is as the criterion.

Claims

1. A method for manufacturing a light-emitting component, comprising:

A light guide substrate is provided, having a front surface and a side surface;

providing a plurality of optical fibers, one end of which is connected to the side surface of the light guide substrate in a parallel arrangement;

providing a reflective layer disposed on the front surface of the light guide substrate; and

A light source is provided, and the other end of the optical fiber is connected to the light source.

2. The method of manufacturing a light-emitting component as claimed in claim 1, wherein the light source is a light-emitting diode (LED).

3. The manufacturing method of the light-emitting component as claimed in claim 1, wherein the light-guiding substrate is manufactured by injection molding, and the optical fiber is embedded in the light-guiding substrate.

4. The method of manufacturing a light-emitting component as claimed in claim 1, wherein the reflective layer is sputtered on the front surface of the light guide substrate.

5. The method of manufacturing a light-emitting component as claimed in claim 1, wherein the reflective layer is a reflective film attached to the front surface of the light guide substrate.

6. A light emitting member, comprising:

a light source;

A light guide substrate has a front surface and a side surface;

a plurality of optical fibers such that one end of the optical fibers is attached to the light source and the other end is connected to the side of the light guide substrate in a parallel arrangement; and

A reflective layer is connected with the front surface of the light guide substrate.

7. The light emitting member as claimed in claim 6, wherein the light source is a light emitting diode (LED).

8. The light emitting component as claimed in claim 6, wherein the light guide substrate is manufactured by injection molding, and the optical fiber is embedded in the light guide substrate.

9. The light emitting component as claimed in claim 6, wherein the reflective layer is sputtered on the front surface of the light guide substrate.

10. The light-emitting component as claimed in claim 6, wherein the reflective layer is a reflective film attached to the front surface of the light guide substrate.

11. A luminous keyboard, comprising:

A keyboard part has a bottom plate and at least one key, wherein the key is arranged on the bottom plate in a manner that can move up and down relative to the bottom plate; and

A light-emitting member is arranged under the keyboard portion, and it includes:

a light source;

A light guide substrate has a front surface and a side surface;

12. The illuminated keyboard as claimed in claim 11, wherein the light source is a light emitting diode (LED).

13. The luminous keyboard as claimed in claim 11, wherein the light guide substrate is manufactured by injection molding, and the optical fiber is embedded in the light guide substrate, whereby when light is guided into the light guide substrate and contacts the reflective layer , the light can be reflected to the keyboard part.

14. The luminous keyboard as claimed in claim 11, wherein the reflective layer is sputtered on the front surface of the light guide substrate.