CN106287321A - Light source and backlight module - Google Patents
Light source and backlight module Download PDFInfo
- Publication number
- CN106287321A CN106287321A CN201510261914.8A CN201510261914A CN106287321A CN 106287321 A CN106287321 A CN 106287321A CN 201510261914 A CN201510261914 A CN 201510261914A CN 106287321 A CN106287321 A CN 106287321A
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- CN
- China
- Prior art keywords
- light
- light source
- incidence surface
- exiting surface
- exiting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
- F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to a kind of light source and there is the backlight module of this light source.This light source includes the light source component for emergent ray and light-guide device, this light-guide device includes the first incidence surface, the first exiting surface and the first end face, this first incidence surface abuts this light source for receiving this light, this first exiting surface is oppositely arranged with this first incidence surface, and the height of this first incidence surface is more than the height of this first exiting surface.This first end face connects this first incidence surface and this first exiting surface, this first end face includes the first joint face and the second joint face, this first joint face is vertically connected at this first exiting surface, this second joint face is the inclined-plane connecting this first joint face with this first incidence surface, and this light-guide device is for this first exiting surface and carrying out outgoing by the ray convergence received from this first incidence surface.
Description
Technical field
The present invention relates to a kind of light source and backlight module, a kind of light source being applied in display device and backlight module.
Background technology
At present, increasing to the demand of display device slimming, the thickness reducing the more backlight module of important component part in display device becomes very important problem.Backlight module generally includes light source and light guide plate, and light source is arranged at the side of light guide plate and reduces the important improvement direction that thickness is backlight module slimming of light guide plate.But, according to current process conditions, luminescent wafer its thickness of more difficult reduction in light source, thus, when the thickness of luminescent wafer is more than the thickness of light guide plate, cannot be introduced into light guide plate is obtained by by the some light making light source outgoing, and then cause the light utilization efficiency of light source and back side module relatively low.
Summary of the invention
In view of this, it is necessary to a kind of light source that can improve light utilization efficiency is provided.
Further, it is provided that a kind of backlight module with said light source.
A kind of light source, this light source includes the light source component for emergent ray and light-guide device, this light-guide device includes the first incidence surface, the first exiting surface and the first end face, this first incidence surface abuts this light source for receiving this light, this first exiting surface is oppositely arranged with this first incidence surface, and the height of this first incidence surface is more than the height of this first exiting surface.This first end face connects this first incidence surface and this first exiting surface, this first end face includes the first joint face and the second joint face, this first joint face is vertically connected at this first exiting surface, this second joint face is the inclined-plane connecting this first joint face with this first incidence surface, and this light-guide device is for this first exiting surface and carrying out outgoing by the ray convergence received from this first incidence surface.
A kind of backlight module, including light guide plate and light source module, this light source module is positioned at the side of this light guide plate for providing light, this light source module includes at least one light source, this light source includes the light source component for emergent ray and light-guide device, this light-guide device includes the first incidence surface, first exiting surface and the first end face, this first incidence surface abuts this light source for receiving this light, this first exiting surface is oppositely arranged adjacent to this light guide plate and with this first incidence surface, the height of this first exiting surface is less than the height of this first incidence surface, and the height of this first exiting surface is equal to the thickness of this light guide plate, this first end face connects this first incidence surface and this first exiting surface.This first end face includes the first joint face and the second joint face, this first joint face is vertically connected at this first exiting surface, this second joint face is the inclined-plane connecting this first joint face with this first incidence surface, and this light-guide device is for this first exiting surface and carrying out outgoing to this light guide plate by the ray convergence of this light source outgoing.
Compared to prior art, the height of the first incidence surface in light source is more than the height of the first exiting surface, so that the first incidence surface of light-guide device can receive the light of light source component outgoing to large extent, improves light utilization.Simultaneously, in first end face, the first joint face is perpendicular to the first exiting surface, and the second joint face connecting this first incidence surface and this first joint face is an inclined-plane, therefore, the light that first incidence surface receives can all be converged to this first exiting surface, the small volume of light-guide device, cost are relatively low simultaneously.
Accompanying drawing explanation
Fig. 1 is the side structure schematic diagram of the backlight module of better embodiment of the present invention.
Fig. 2 is the perspective view of light source module shown in Fig. 1 and light guide plate.
Fig. 3 is the decomposition texture schematic diagram of the light source module shown in Fig. 2.
Fig. 4 is the light source module shown in Fig. 2 with light guide plate along the cross-sectional view of IV-IV line.
Main element symbol description
| Backlight module | 1 |
| Light guide plate | 10 |
| Light source module | 20 |
| Optical diaphragm group | 30 |
| Framework | 40 |
| Light source | 200 |
| Drive circuit board | 201 |
| Light source assembly | 210 |
| Housing | 211 |
| Luminescence chip | 212 |
| First incidence surface | 231 |
| First exiting surface | 232 |
| First bottom surface | 233 |
| First end face | 234 |
| First joint face | 2341 |
| Second joint face | 2342 |
| Phosphor powder layer | 213 |
| Adhesive layer | 220 |
| Leaded light component | 230 |
| First direction | X |
| Second direction | Y |
| Second incidence surface | 101 |
| Second exiting surface | 102 |
| Second bottom surface | 103 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Refer to Fig. 1, the side structure schematic diagram of backlight module 1 in better embodiment of the present invention.
Backlight module 1 includes light guide plate 10, light source module 20, optical diaphragm group 30 and framework 40.Light guide plate 10 is for receiving the light that light source module 20 sends, and the light received is converted to planar light, and optical diaphragm group 30 is supplied to, after processing the plane light from light guide plate 10 outgoing, the face equipment that image shows.
Specifically, light source module 20 is arranged at the side of this light guide plate 10, for emergent ray, the light of light source module outgoing is converted to planar light source and carries out outgoing by light guide plate 10, optical diaphragm group 30 is arranged at the side of this light guide plate 10 emergent ray, for processing the light of light guide plate 10 outgoing, this optical diaphragm group 30 includes the brightening piece (Brightness for improving light intensity
Enhancement Film, BEF), adjust radiation direction prismatic lens (Prism Film) etc..Framework 40 is arranged at the periphery of light guide plate 10 corresponding light source module 20, be used for housing this light source module 20 and support, lightguide plate fixing 10 and optical diaphragm group 30.
Seeing also Fig. 2, it is for as shown in Figure 1 along the perspective view of the light source module shown in the direction contrary with first direction X with light guide plate.Light source module 20 includes that multiple light source 200 and drive circuit board 201, the plurality of light source 200 are arranged at intervals on drive circuit board 201, and wherein, this drive circuit board 201 is for providing driving voltage for the plurality of light source 200.
This drive circuit board 201 is the light tight circuit board of a flexible insulating, multiple wire (not shown) and voltage conversion circuit (scheme depending on) are arranged at this drive circuit board 201, light source 200 is electrically connected with this wire and voltage conversion circuit, to receive driving and the control of this voltage conversion circuit.
See also Fig. 3-4, its decomposition texture schematic diagram being light source module shown in Fig. 2 and the cross-sectional view along IV-IV.Light source 200 includes one for the light source component 210 of emergent ray and a light-guide device 230.As shown in Figure 2, this light source component 210 includes housing 211 and luminescent wafer 212, wherein, this housing 211 forms the receiving space (sign) with an opening, luminescent wafer 212 is fixed on this shell inner surface and is contained in this receiving space, and the surface of this luminescent wafer 212 emergent ray is towards the opening of this receiving space, its height is essentially identical with the opening size of housing 211.
It is appreciated that this luminescent wafer 212 is electrically connected with drive circuit board 201 by a conducting element, with luminous under the driving signal that drive circuit board 201 exports.In present embodiment, this luminescent wafer is LED wafer (Light
Emitting Diode, LED).
The surface of this luminescent wafer 212 emergent ray also includes a phosphor powder layer 213, for the light of luminescent wafer 212 outgoing is processed, such as, the light of generally a light emitting diode wafer outgoing is blue light, then phosphor powder layer 213 is processed as white light to this blue light, and this phosphor powder layer 213 can be yellow fluorescent powder layer.
This light-guide device 230 includes the first incidence surface the 231, first exiting surface the 232, first bottom surface 233 and the first end face 234, this first incidence surface 231 is oppositely arranged with this first exiting surface 232, and be all connected with this first bottom surface 233, first end face 234 is oppositely arranged with this first bottom surface, is connected with the first incidence surface 231 and the first exiting surface 232 simultaneously.For purposes of illustration only, the direction of the first place, bottom surface 233 plane is defined as the first direction X of coordinate axes, and the direction being perpendicular to this first bottom surface is defined as second direction Y of coordinate axes.
This first incidence surface 231 is parallel to this second direction Y, and the adhesive layer 220 passing through a transparent material is bonded to the phosphor powder layer 213 on luminescent wafer 212 surface, so that this light source component 210 becomes one structure with this light-guide device 230.This first incidence surface 231 is for receiving the light from luminescent wafer 212 outgoing.In present embodiment, this first incidence surface 231 is coated with opening and the luminescent wafer 212 of this housing 211, and this first incidence surface 231 is substantially equal to the size of this luminescent wafer 212 at the projection size of second direction Y such that it is able to more effectively improve the light intensity that light-guide device 230 receives.The material of this adhesive layer 220 is liquid optical cement (Optical Clear
Resin, OCR).
This first exiting surface 232 is arranged adjacent to this light guide plate 10, this light-guide device 230 by the light that receives from this first incidence surface 231 from this first exiting surface 232 outgoing to this light guide plate 10.Meanwhile, the size of the projection of this first incidence surface 231 Y in a second direction is more than this first exiting surface 232 size in the projection of second direction Y.It is to say, light-guide device 230 is being perpendicular on this direction, the first bottom surface 233, correspondence enters the height height more than the first exiting surface 232 of the first incidence surface 231.In present embodiment, the first exiting surface 232 is parallel to second direction Y.
This first end face 234 also includes the first joint face 2341 and the second joint face 2342, wherein, this first joint face 2341 is parallel to the first bottom surface 233 and is vertically connected at this first exiting surface 232, and this second joint face 2342 is the clinoplain being connected to this first joint face 2341 with this first incidence surface 231.
In addition, one layer of reflecting material (not shown) is all scribbled on this first bottom surface 233 and this first end face 234, thus the light injecting these two faces is reflected, prevent light from this first bottom surface 233 and this first end face 234, thus ensure that the light entering light-guide device 230 is all to this first exiting surface 232 outgoing.
Referring to Fig. 4, light guide plate 10 includes the second incidence surface the 101, second exiting surface 102 and the second bottom surface 103, and this second incidence surface 101 is connected to this second exiting surface 102 and this second bottom surface 103 connects.This second bottom surface 103 is parallel with this first bottom surface 233, it is preferable that the second bottom surface 103 and this first bottom surface 233 are at same plane.This second exiting surface 102 is oppositely arranged with this first bottom surface and is parallel to each other, and this light guide plate 10 is the most identical at the projection size of Y in a second direction, say, that the consistency of thickness of light guide plate 10 Y in a second direction.
Second incidence surface 101 is perpendicular to this second bottom surface 103 and this second exiting surface 102, simultaneously, this first exiting surface 232 is identical with the projection size of this second incidence surface 101 Y in a second direction, say, that the first exiting surface 232 is identical with second incidence surface 102 height in second direction Y.Wherein, the shape of this second incidence surface 101 and this first exiting surface 232 is to adaptation, such as, when the second incidence surface 101 is the plane being perpendicular to this second bottom surface 103, first exiting surface 232 is also plane, and when the second incidence surface 101 is the structure prominent along light source module 20 direction, then the first exiting surface 232 is then the structure along light guide plate 10 direction indent.
Preferably, light guide plate 10 is identical with the material of light-guide device 230, can be all polymethyl methacrylate (polymethyl methacrylate, PMMA), Merlon (Polycarbonate,
And the plastics (plastic) of the optical-grade such as polystyrene (Polystyrene, PS), silicones (Silicone) or glass (vitreous) transparent material or a combination thereof PC).
Compared to prior art, owing to the height of the first incidence surface 231 in light-guide device 230 in light source 200 is identical with the height of light source component 210, and the first exiting surface 232 is identical with the height in second direction Y of the second incidence surface 101 in light guide plate 10 simultaneously, and the height of the first incidence surface 231 is more than the height of the first exiting surface 232, so that the first incidence surface 231 of light-guide device 230 can receive the light of light source component 210 outgoing to large extent, improve light utilization.Simultaneously, in first end face 234, the first joint face 2341 is perpendicular to the first exiting surface 232, and the second joint face 2342 connecting this first incidence surface 231 and this first joint face 2341 is an inclined-plane, therefore, the light that first incidence surface 231 receives can all be converged to this first exiting surface 232, the small volume of light-guide device 230, cost are relatively low simultaneously.
Further, when the size of light source component 210 is more than the thickness of light guide plate 10, this light-guide device 230 can also be effectively ensured the thinner thickness of light guide plate 10.
Additionally, owing to light-guide device 230 and light source component 210 are set to one, and without the structure of light guide plate 10 being made any change, therefore, the thickness of light guide plate 10 is uniform, simple in construction, it is thus possible to use volume to volume (Roll to Roll) or pressing plate mode to produce, improve the make efficiency of light guide plate 10, reduce light guide plate 10 and the cost of backlight module 1 accordingly.
Further, in light source 200, light-guide device 230 is directly connected as one with light source component 210 by the adhesive layer 220 of transparent material, it is possible to the light of luminescent wafer 212 outgoing is effectively restrained converging to light guide plate 10 side the most completely, equably, more effectively improves light utilization efficiency.
Backlight module as shown in Figure 1 may be used for the display panels shown as image, or is applied in other display floaters needing backlight.
It is understood that for the person of ordinary skill of the art, can conceive according to the technology of the present invention and make other various corresponding changes and deformation, and all these change all should belong to the protection domain of the claims in the present invention with deformation.
Claims (12)
1. a light source, this light source includes the light source component for emergent ray and light-guide device, this light-guide device includes the first incidence surface, first exiting surface and the first end face, this first incidence surface abuts this light source for receiving this light, this first exiting surface is oppositely arranged with this first incidence surface, the height of this first incidence surface is more than the height of this first exiting surface, it is characterized in that, this first end face connects this first incidence surface and this first exiting surface, this first end face includes the first joint face and the second joint face, this first joint face is vertically connected at this first exiting surface, this second joint face is the inclined-plane connecting this first joint face with this first incidence surface, this light-guide device is for this first exiting surface and carrying out outgoing by the ray convergence received from this first incidence surface.
2. light source as claimed in claim 1, it is characterised in that by a transparent adhesive layer, this first incidence surface is interconnected so that this light source component becomes one structure with this light-guide device with this light source component.
3. light source as claimed in claim 1, it is characterised in that this light source component is a LED wafer, also includes phosphor powder layer between this adhesive layer and this LED wafer, and this phosphor powder layer is covered on this LED wafer.
4. light source as claimed in claim 1, it is characterised in that this adhesive layer is the liquid optical cement of transparent material, and the first incidence surface is coated with this LED wafer.
null5. a backlight module，Including light guide plate and light source module，This light source module is positioned at the side of this light guide plate for providing light，This light source module includes at least one light source，This light source includes the light source component for emergent ray and light-guide device，This light-guide device includes the first incidence surface、First exiting surface and the first end face，This first incidence surface abuts this light source for receiving this light，This first exiting surface is oppositely arranged adjacent to this light guide plate and with this first incidence surface，The height of this first exiting surface is less than the height of this first incidence surface，And the height of this first exiting surface is equal to the thickness of this light guide plate，This first end face connects this first incidence surface and this first exiting surface，It is characterized in that，This first end face includes the first joint face and the second joint face，This first joint face is vertically connected at this first exiting surface，This second joint face is the inclined-plane connecting this first joint face with this first incidence surface，This light-guide device is used for the ray convergence received from this first incidence surface to this first exiting surface and carries out outgoing to this light guide plate.
6. backlight module as claimed in claim 5, it is characterised in that this light-guide device includes the first incidence surface and the first exiting surface, by adhesive layer, this first incidence surface is interconnected so that this light source component becomes one structure with this light-guide device with this light source component.
7. backlight module as claimed in claim 6, it is characterized in that, this light source component is a LED wafer, also includes phosphor powder layer between this adhesive layer and this LED wafer, and this phosphor powder layer and this adhesive layer are bonded on this light-guide device and this LED wafer simultaneously.
8. backlight module as claimed in claim 7, this adhesive layer is the liquid optical cement of transparent material.
9. backlight module as claimed in claim 7, it is characterised in that this first incidence surface is coated with this LED wafer.
10. backlight module as claimed in claim 5, it is characterized in that, this light guide plate includes one for receiving the second incidence surface of incident ray, one for the second exiting surface of emergent ray and the second bottom surface, this second incidence surface is connected to this second exiting surface and this second bottom surface connects, this second exiting surface is oppositely arranged with this second bottom surface and is parallel to each other, and this light guide plate is identical at the height along the direction being perpendicular to this second bottom surface.
11. backlight modules as claimed in claim 10, it is characterised in that this second incidence surface is perpendicular to this second exiting surface and this second bottom surface.
12. backlight modules as claimed in claim 11, it is characterised in that this light-guide device also includes the first bottom surface, this first bottom surface connects this first incidence surface and this first exiting surface, and this first bottom surface is parallel to this second bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261914.8A CN106287321A (en) | 2015-05-21 | 2015-05-21 | Light source and backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261914.8A CN106287321A (en) | 2015-05-21 | 2015-05-21 | Light source and backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106287321A true CN106287321A (en) | 2017-01-04 |
Family
ID=57633543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510261914.8A Pending CN106287321A (en) | 2015-05-21 | 2015-05-21 | Light source and backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106287321A (en) |
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| CN103925515A (en) * | 2013-07-10 | 2014-07-16 | 厦门天马微电子有限公司 | Backlight module and display device |
| CN103925516A (en) * | 2013-08-01 | 2014-07-16 | 厦门天马微电子有限公司 | LED backlight source and backlight module |
| CN104181627A (en) * | 2013-05-21 | 2014-12-03 | 鸿富锦精密工业（深圳）有限公司 | Conductive element and backlight module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009081014A (en) * | 2007-09-26 | 2009-04-16 | Epson Imaging Devices Corp | Illumination device, electro-optical device, and electronic apparatus |
| CN102313174A (en) * | 2010-06-30 | 2012-01-11 | 欧姆龙株式会社 | Area light source device |
| CN102121639A (en) * | 2010-12-08 | 2011-07-13 | 友达光电股份有限公司 | Backlight module and assembling method thereof |
| CN102269839A (en) * | 2011-06-14 | 2011-12-07 | 友达光电股份有限公司 | Light guide plate and backlight module |
| CN103133996A (en) * | 2011-12-02 | 2013-06-05 | 鸿富锦精密工业（深圳）有限公司 | Light guide plate and backlight module |
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Application publication date: 20170104 |