CN202791646U - Backlight module device - Google Patents
Backlight module device Download PDFInfo
- Publication number
- CN202791646U CN202791646U CN2012204471611U CN201220447161U CN202791646U CN 202791646 U CN202791646 U CN 202791646U CN 2012204471611 U CN2012204471611 U CN 2012204471611U CN 201220447161 U CN201220447161 U CN 201220447161U CN 202791646 U CN202791646 U CN 202791646U
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- light
- transmission film
- light transmission
- backlight module
- module device
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Abstract
The utility model discloses a backlight module device which comprises a light guide plate, an upper light-transmission film, a lower light-transmission film, a luminous unit, a reflection ink layer and a lightproof ink layer, wherein the light guide plate comprises a base plate and a plurality of light guide spots formed on the bottom surface of the base plate; the upper light-transmission film is arranged on the top surface of the base plate; the lower light-transmission film is arranged on the bottom surface of the base plate, and coat the light guide spots; and the luminous unit is arranged at one side end of the light guide plate and provides light entering the light guide plate. The refractive indexes of the upper light-transmission film and the lower light-transmission film are less than the refractive index of the light guide plate; the light generates a total internal reflection effect between the upper light-transmission film and the lower light-transmission film; and the light guide spots are used for dispersing the light entering the light guide spots out of the upper light-transmission film. According to the backlight module device, the transmission efficiency of the light in the light guide plate is improved, and an ideal light-transmission effect is achieved.
Description
Technical field
The utility model relates to a kind of light-emitting device, particularly relates to a kind of backlight module device for electronic product.
Background technology
Consult Fig. 1, existing backlight module 1 comprises a LGP 11, a plurality of light guiding points 12 that is arranged at these LGP 11 bottom surfaces, one is positioned at the opaque reflector plate 13 of these LGP 11 belows, one diffusion sheet 14, that is positioned at these LGP 11 tops is positioned at the prismatic lens 15 of these diffusion sheet 14 tops, and a light-emitting component 16 that is positioned at these LGP 11 1 sides.
This light-emitting component 16 is incident to light in this LGP 11 and makes light to the distal advancement of this LGP 11, and can be by described light guiding points 12 and to the directional divergence of this diffusion sheet 14,15 of this prismatic lenses can make the light by this diffusion sheet 14 further be diffused.
This backlight module 1 normally is applied in the display floater of electronic product or the keyboard and uses as display light source.It is not to the utmost desirable that but the light guide effect of existing backlight module 1 remains, and especially the displacement of light in this LGP 11 is far away, will weaken gradually and can produce the inhomogeneous effect of printing opacity.In addition, light directly can not cause the loss of light yet when this diffusion sheet 14 is dispersed via described light guiding points 12.
Therefore, how to reduce the loss of light and make backlight module have good light guide effect to have become research topic important on this field.
Summary of the invention
The purpose of this utility model is to provide a kind of slimming and backlight module device that effectively utilize light.
The utility model backlight module device comprises on a slice LGP, one deck light transmission film under light transmission film, one deck, and a luminescence unit.
This LGP comprises that a plate base and at least one are formed at the light guiding points of this substrate bottom surface.
Upward light transmission film is arranged at the end face of this substrate.
This time light transmission film with should be upper light transmission film is corresponding is arranged at the bottom surface of this substrate and coats this light guiding points.
This luminescence unit is arranged at a side of this LGP and the light that is incident in this LGP is provided.
Should upper light transmission film and this time light transmission film has respectively the refractive index that is lower than this LGP and make by this light produce total internal reflection effect (total internal reflection effect) between light transmission film and this time light transmission film on this, this light guiding points for the divergence of beam that is used for being incident to this light guiding points to being somebody's turn to do upward outside the light transmission film.
Preferably, light transmission film and this time light transmission film have identical refractive index on this.
Preferably, light transmission film and this time light transmission film have different refractive indexes on this.
Preferably, light transmission film and this time light transmission film are respectively one deck light-cured resins on this.
Preferably, this light guiding points is that one deck is coated this substrate bottom surface and light reflection extremely is somebody's turn to do the outer light guide ink of upper light transmission film.
Preferably, this light guiding points be a plurality of be formed at this substrate bottom surface and with light scattering to should the outer micro-structural of upper light transmission film.
Preferably, this backlight module device comprises that one deck is coated below this time light transmission film and for the reflective ink lay of the light reflection that is used for leaking outside from this time light transmission film to this LGP.
Preferably, this backlight module device comprises that one deck is coated below this reflective ink lay and for the black-out ink layer that is used for avoiding light to leak outside and protecting this LGP.
Preferably, this LGP comprises a plurality of light guiding points that are formed at this substrate bottom surface.
Preferably, this luminescence unit comprises a light emitting diode.
The beneficial effects of the utility model are: the total internal reflection effect that produces light by the refractive index difference between this upper and lower light transmission film and this LGP, therefore promote the conduction benefit of light in this LGP, and by this light guiding points divergence of beam is gone out, and then reach desirable translucent effect.
Description of drawings
Fig. 1 is a cross sectional side view, and existing backlight module is described;
Fig. 2 is a cross sectional side view, and the first preferred embodiment of the utility model backlight module device is described;
Fig. 3 is a cross sectional side view, and another aspect of the light guiding points of this first preferred embodiment is described;
Fig. 4 is a cross sectional side view, and the second preferred embodiment of the utility model backlight module device is described; And
Fig. 5 is the partial enlarged drawing among the imaginary line I of Fig. 4, and the detail structure of this second preferred embodiment is described.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
Consult Fig. 2, the first preferred embodiment of the utility model backlight module device comprises on a slice LGP 2, one deck light transmission film 4 under light transmission film 3, one deck, luminescence unit 5, the reflective ink lay 6 of one deck, and one deck black-out ink layer 7.
This LGP 2 comprises the substrate 21 of a surfacing and height printing opacity, and a plurality of light guiding points 22 that is formed at these substrate 21 bottom surfaces (in Fig. 2 with 2 light guiding points 22 as illustrating).
Should upper light transmission film 3 be that one deck is arranged at the end face of this substrate 21 and the transparent membrane that refractive index is lower than this substrate 21.This time light transmission film 4 is that one deck is arranged at the bottom surface of this substrate 21 and the transparent membrane that refractive index is lower than this substrate 21, and envelopes simultaneously described light guiding points 22 with upward light transmission film 3 is corresponding.
In this first preferred embodiment, described light guiding points 22 is applied in the light guide ink of these substrate 21 bottom surfaces via mode of printing, for being used for light is upwards reflexed to outside the light transmission film 3.But not as limit, each light guiding points 22 also can be formed (as shown in Figure 3) by a plurality of micro-structurals that are formed at these substrate 21 bottom surfaces one-body moldedly, described micro-structural can be continuous V-groove or continuous sag and swell, for being used for light is upwards scattered to outside the light transmission film 3.
In the present embodiment, light transmission film 3 and this time light transmission film 4 are respectively light-cured resins via ultraviolet light (UV) curing on this, or an optical coating.Preferably, light transmission film 3 and this time light transmission film 4 are made by identical material and have identical refractive index on this.Preferably, light transmission film 3 and this time light transmission film 4 also can be made by unlike material and have different refractive indexes on this.
The material that is applicable to make this substrate 21 includes but not limited to: polymethyl methacrylate (polymethylmethacrylate, PMMA, refractive index about 1.49), polypropylene (polypropylene, PP, refractive index about 1.49), PET (polyethylene terephthalate, PET, refractive index about 1.58), Merlon (polycarbonate, PC, refractive index about 1.59) and polystyrene (polystyrene, PS, refractive index about 1.59) etc.
Be applicable to make on this light transmission film 3 maybe light-cured resin or the optical filming material of this time light transmission film 4 include but not limited to: acrylic resin (acrylic resin, refractive index about 1.41), magnesium fluoride (MgF
2, refractive index about 1.38), barium fluoride (BaF
2, refractive index about 1.48) and silica (SiO
2, refractive index about 1.46) etc.About selecting of above-mentioned material, not as limit, key is to make on this light transmission film 3 and this time light transmission film 4 to have respectively the refractive index that is lower than this LGP 2, so that light produces the total internal reflection effect in this LGP 2.
This luminescence unit 5 comprises that one is arranged at the light emitting diode of a side of this LGP 2, for being used for light is incident to this LGP 2.In this first preferred embodiment, the number of this luminescence unit 5 and type are familiar with in the art this skill person and also this luminescence unit 5 can be designed to more than one light emitting diode or the light source of other types not as limit.
This reflective ink lay 6 is that one deck is coated the reflective printing ink below this time light transmission film 4, will return from the light reflection that this time light transmission film 4 leaks outside this LGP 2 for being used for, with the utilization rate of raising light.In this first preferred embodiment, employed reflective printing ink is available from Shanghai Feikai Photoelectricity Materials Co., Ltd (Shanghai Phichem Corporation), product type KYC-M-100C.
This black-out ink layer 7 is that one deck is coated the black out ink below this reflective ink lay 6, for being used for avoiding light to leak outside and can avoid damage for the protection of this LGP 2 simultaneously from this reflective ink lay 6.In this first preferred embodiment, employed black out ink is available from Shanghai Feikai Photoelectricity Materials Co., Ltd, product type KYC-D-1.
Consult Fig. 4 and Fig. 5, the second preferred embodiment of the utility model backlight module device and this first preferred embodiment have similar structure, both are in different places: in this second preferred embodiment, this backlight module device also comprises the diffusion barrier 8 (diffuser) and of coating light transmission film 3 tops on this and coats the brightness enhancement film 9 of these diffusion barrier 8 tops (brightness enhancement film, BEF).
This diffusion barrier 8 comprises that a plurality of confessions are used for making the further particulate of diffusion of light, the end face of this brightness enhancement film 9 has a plurality of micro-prism structures (microprism structure) that can be used for improving briliancy, this diffusion barrier 8 and this brightness enhancement film 9 can be done different improvement design by being familiar with this skill person in this area, when not as limit.Especially, when this diffusion barrier 8 and this brightness enhancement film 9 are backlight module devices that mode with direct coating can generate one-body molded ground and slimming when forming.
Importantly, upward light transmission film 3 and this time light transmission film 4 have the refractive index that is lower than this LGP 2 respectively, and make by this light light transmission film 3 and this time light transmission film 4 (that is to say between the end face and bottom surface of this LGP 2) on this can produce the total internal reflection effect, and then promote conduction and the utilization of light in this LGP 2.
Especially, the light that is incident to described light guiding points 22 can upwards be dispersed the light that generation has different incidence angles degree (incident angle), wherein the part incident angle can't the experiences total internal reflection effect less than the light of a critical angle (critical angle), therefore can upwards exhale by light transmission film on this 3 (in Fig. 2 and Fig. 3 only with the light dispersed vertically upward as illustrating); Another part incident angle then can produce the total internal reflection effect again and continue to conduct in this LGP 2 greater than the light of this critical angle and advance.
In sum, the light total internal reflection effect of utilizing light transmission film 3 on this and this time light transmission film 4 to cause can make light carry out total internal reflection in this LGP 2, therefore can increase the utilization of light and make more slimming of global design.By described light guiding points 22 light light transmission film 3 on this is dispersed again, and then reached the effect of printing opacity, so really can reach the purpose of this utility model.
The above person, it only is preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this, i.e. all simple equivalences of doing according to the utility model claims and specification change and modify, and all still belong to scope of the present utility model.
Claims (10)
1. backlight module device is characterized in that:
This backlight module device comprises:
A slice LGP comprises that a plate base and at least one are formed at the light guiding points of this substrate bottom surface;
Light transmission film on one deck is arranged at the end face of this substrate;
The lower light transmission film that one deck is corresponding with being somebody's turn to do upper light transmission film is arranged at the bottom surface of this substrate and coats this light guiding points; And
A luminescence unit, be arranged at a side of this LGP and the light that is incident in this LGP is provided, upward light transmission film and this time light transmission film have respectively the refractive index that is lower than this LGP, make light on this, produce the total internal reflection effect between light transmission film and this time light transmission film, this light guiding points for the divergence of beam that is used for being incident to this light guiding points outside should upper light transmission film.
2. backlight module device according to claim 1, it is characterized in that: light transmission film and this time light transmission film have identical refractive index on this.
3. backlight module device according to claim 1, it is characterized in that: light transmission film and this time light transmission film have different refractive indexes on this.
4. backlight module device according to claim 1, it is characterized in that: light transmission film and this time light transmission film are respectively one deck light-cured resins on this.
5. backlight module device according to claim 1 is characterized in that: this light guiding points be one deck coat this substrate bottom surface and with light reflection to should the outer light guide ink of upper light transmission film.
6. backlight module device according to claim 1 is characterized in that: this light guiding points be a plurality of be formed at this substrate bottom surface and with light scattering to should the outer micro-structural of upper light transmission film.
7. backlight module device according to claim 1 is characterized in that: this backlight module device comprises also that one deck is coated below this time light transmission film and for the reflective ink lay of the light reflection that is used for leaking outside from this time light transmission film to this LGP.
8. backlight module device according to claim 7 is characterized in that: this backlight module device also comprises one deck and coats below this reflective ink lay and for the black-out ink layer that is used for avoiding light to leak outside and protecting this LGP.
9. backlight module device according to claim 1, it is characterized in that: this LGP comprises a plurality of light guiding points that are formed at this substrate bottom surface.
10. backlight module device according to claim 1, it is characterized in that: this luminescence unit comprises a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204471611U CN202791646U (en) | 2012-09-04 | 2012-09-04 | Backlight module device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204471611U CN202791646U (en) | 2012-09-04 | 2012-09-04 | Backlight module device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202791646U true CN202791646U (en) | 2013-03-13 |
Family
ID=47818904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204471611U Expired - Lifetime CN202791646U (en) | 2012-09-04 | 2012-09-04 | Backlight module device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202791646U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106097881A (en) * | 2016-06-24 | 2016-11-09 | 昆山华冠商标印刷有限公司 | Label and the processing technology of this label with reflector plate |
| WO2016206148A1 (en) * | 2015-06-24 | 2016-12-29 | 武汉华星光电技术有限公司 | Light guide plate, backlight module, and display device |
| WO2017133129A1 (en) * | 2016-02-03 | 2017-08-10 | 京东方科技集团股份有限公司 | Backlight module and display device |
| JP2022122891A (en) * | 2018-12-08 | 2022-08-23 | タクトテック オーイー | Multilayer structure with embedded light source and light-guiding features and related method of manufacture |
-
2012
- 2012-09-04 CN CN2012204471611U patent/CN202791646U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016206148A1 (en) * | 2015-06-24 | 2016-12-29 | 武汉华星光电技术有限公司 | Light guide plate, backlight module, and display device |
| GB2549890A (en) * | 2015-06-24 | 2017-11-01 | Wuhan China Star Optoelectronics Technology Co Ltd | Light guide plate, backlight module, and display device |
| GB2549890B (en) * | 2015-06-24 | 2021-03-10 | Wuhan China Star Optoelectronics Technology Co Ltd | Light guide plate, backlight module and display device |
| WO2017133129A1 (en) * | 2016-02-03 | 2017-08-10 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US10310325B2 (en) | 2016-02-03 | 2019-06-04 | Boe Technology Group Co., Ltd. | Backlight module and display device |
| CN106097881A (en) * | 2016-06-24 | 2016-11-09 | 昆山华冠商标印刷有限公司 | Label and the processing technology of this label with reflector plate |
| JP2022122891A (en) * | 2018-12-08 | 2022-08-23 | タクトテック オーイー | Multilayer structure with embedded light source and light-guiding features and related method of manufacture |
| CN115327691A (en) * | 2018-12-08 | 2022-11-11 | 塔克托科技有限公司 | Multilayer structure with embedded light source and light guiding features and method of making same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |