CN104344274A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN104344274A CN104344274A CN201310315649.8A CN201310315649A CN104344274A CN 104344274 A CN104344274 A CN 104344274A CN 201310315649 A CN201310315649 A CN 201310315649A CN 104344274 A CN104344274 A CN 104344274A
- Authority
- CN
- China
- Prior art keywords
- lens
- backlight module
- light
- face
- emitting diode
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 10
- 238000005253 cladding Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 235000019994 cava Nutrition 0.000 abstract 1
- 230000005142 aphototropism Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
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
- F21S8/00—Lighting devices intended for fixed installation
-
- 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
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- H01L33/58—
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
Abstract
A backlight module comprises a substrate with an electrode, a light-emitting diode chip and a lens, wherein the light-emitting diode chip is arranged on the substrate and electrically connected with the electrode, and the lens covers the light-emitting diode chip. The lens comprises a bottom face, a side face and a top face, wherein the side face is connected with the bottom face and the top face. The lens is a rotating body which has an optical axis. The outlines of the sections, along the optical axis of the lens, of the side face and the top face of the lens are in an M shape. A containing portion which is used for containing the light-emitting diode chip and caves towards the inner portion of the lens is arranged at the center of the bottom face. The surface of the containing portion serves as the light inlet face of the lens. According to the backlight module, the light emitting angle of the lens is regulated through the lens with the top face, the light emitting angle of the backlight module is large, and therefore the light emitting effect of the whole backlight module is improved.
Description
Technical field
The present invention relates to a kind of backlight module, particularly a kind of down straight aphototropism mode set.
Background technology
The uniform light distribution that common down straight aphototropism mode set scioptics make light emitting diode send.The light out part that described lens comprise light in part and protrude out towards the direction away from light in part.The light that described light emitting diode sends from light in part towards the process of light out part outgoing in, the lighting angle through the light of lens outgoing is little, thus affects the illumination effect of down straight aphototropism mode set entirety.
Summary of the invention
The object of the invention is to provide a kind of down straight aphototropism mode set with large lighting angle.
A kind of backlight module, comprises the substrate that has electrode, and one is installed on the lens that described light-emitting diode chip for backlight unit established by the light-emitting diode chip for backlight unit that is electrically connected on described substrate and with electrode and a cover.Described lens comprise a bottom surface, a side and an end face; Connection bottom surface, described side and end face; Described lens are a rotary body, have an optical axis; The side of described lens and end face along the section profile of lens axis in " M " shape; Described bottom center comprise one for accommodating described light-emitting diode chip for backlight unit, to the resettlement section of lens interior depression, the surface of described resettlement section is as the incidence surface of lens.
Backlight module provided by the invention, utilizes the lighting angle of lens described in the lens adjustment with end face, makes light through end face back reflection to wide-angle, thus improves the illumination effect of backlight module entirety.
Accompanying drawing explanation
The backlight module schematic diagram that Fig. 1 provides for one embodiment of the invention.
The backlight module schematic diagram that Fig. 2 provides for another embodiment of the present invention.
Fig. 3 is luminous intensity and the lighting angle graph of a relation of backlight module provided by the present invention.
Fig. 4 is the schematic diagram that backlight module provided by the present invention is installed on circuit board.
Main element symbol description
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Refer to Fig. 1 and Fig. 2, a kind of backlight module 10, comprise a substrate 110, with electrode 111 and be installed on the lens 130 that described light-emitting diode chip for backlight unit 120 established by the light-emitting diode chip for backlight unit 120 that is electrically connected on described substrate 110 and with electrode 111 and a cover.Routing mode light-emitting diode chip for backlight unit 120 is adopted to be electrically connected with electrode 111 in the present embodiment.In other embodiments, described light-emitting diode chip for backlight unit 120 also can adopt and cover crystal type and be electrically connected with electrode 111.
Described lens 130 comprise side, bottom surface 131, one 132 and an end face 133.Described side 132 connects bottom surface 131 and end face 133.Described lens 130 are a rotary body, and it has an optical axis O-O.The side 132 of described lens 130 and end face 133 along the section profile of lens 130 optical axis O-O in " M " shape.Center, described bottom surface 131 comprises the resettlement section 1311 to lens 130 inner recess that described light-emitting diode chip for backlight unit 120 established by a cover, and the inner surface of described resettlement section 1311 is as the incidence surface 1312 of lens 130.Described resettlement section 1311 is along the section profile parabolically shape of lens 130 optical axis O-O.
Described end face 133 is a fully reflecting surface.The section profile along lens 130 optical axis O-O of described end face 133 is V-shaped, point on end face 133 and the distance between bottom surface 131 increase gradually along the direction away from optical axis O-O, also namely the peak A of end face 133 is positioned at the joining place of end face 133 and side 132, and minimum point B is positioned at the intersection of end face 133 and optical axis O-O.Preferably, the peak A of described the end face 133 and vertical range h of minimum point B is less than 0.3mm, and on the section along lens 130 optical axis O-O, the angle theta of the line between minimum point B and two peak A is 160 degree ~ 180 degree." V " shape profile side that can be designed as shown in Figure 1 of the section along lens 130 optical axis O-O of described end face 133 surpasses arc " V " the shape structure away from direction, bottom surface 131 projection, and the side that also can be designed as shown in Figure 2 is " V " shape structure of straight line.
In the present embodiment, described light-emitting diode chip for backlight unit 120 established by lens 130 cover, and the central shaft of light-emitting diode chip for backlight unit 120 overlaps with the optical axis O-O of lens 130.The one side that described substrate 110 is provided with light-emitting diode chip for backlight unit 120 is a reflecting surface 112.First time refraction is there is in the light that light-emitting diode chip for backlight unit 120 sends after the incidence surface 1312 of the bottom surface 131 of lens 130 enters lens 130, through first time, refraction arrives the side 132 of lens 130 to part light, and penetrates outside lens 130 via side 132 through second time refraction again; Another part light is due to the end face 133 of first time refraction arrival lens 130, then via end face 133 total reflection effect or finally arrive the side 132 of lens 130 via the multiple reflections effect between end face 133 and the reflecting surface 112 of substrate 110, and 132 to penetrate outside lens 130 from the side through second time refraction again.Refer to Fig. 3, backlight module 10 provided by the present invention, utilize the end face 133 of lens 130 to make the some light directly over directive lens be reflexed to side 132 by end face 133, thus the lighting angle of expansion backlight module 10 is to improve the illumination effect of backlight module 10 entirety.It is maximum that backlight module 10 provided by the present invention can reach the luminous intensity of lighting angle when-160 degree and 160 degree, it should be noted that, the direction that optical axis O-O is positioned at the first half of the both sides of substrate 110, lower portion is respectively 0 degree and +/-180 degree.
Bottom surface 131 and the substrate 110 of described lens 130 adopt adhesive sticky and, to protect light-emitting diode chip for backlight unit 120 from the impact of steam or dust.Described substrate 110 is identical with the material that described lens 130 adopt, and described material can select PMMA(polymethyl methacrylate), PC(Merlon), silicones or epoxy resin etc.
Further; this backlight module 10 also adopts the coated described light-emitting diode chip for backlight unit 120 of the encapsulating material (not shown) be filled in the resettlement section 1311 of lens 130; the resettlement section 1311 of described lens 130 is coated with the light-emitting diode chip for backlight unit 120 of encapsulating material described in accommodating, to protect light-emitting diode chip for backlight unit 120 from the impact of steam or dust.In addition, fluorescent material can also be added in described encapsulating material or lens 130 with the color of the light regulating backlight module 10 and send and colour temperature.
Further, refer to Fig. 4, backlight module 10 provided by the present invention is installed on circuit board 20, and the one side that this circuit board 20 is provided with described backlight module 10 has light-reflecting portion 210.The lighting angle that backlight module 10 sends can be greater than the light reflection of-90 degree and 90 degree extremely away from the direction (top of circuit board 20 shown in Fig. 4) of light-reflecting portion 210 by described light-reflecting portion 210.Described light-reflecting portion 210 can be one and is arranged on reflector in the one side of the circuit board 20 being provided with described backlight module 10.Preferably, the one side of installing described backlight module 10 at circuit board is coated with reflectorised paint, thus reduces the operation, the saving cost that arrange reflector.
Can do for a person skilled in the art in the technology of the present invention design and do other changes, but technical conceive according to the present invention makes other various corresponding change and distortion, all should belong to the protection domain of the claims in the present invention.
Claims (10)
1. a backlight module, comprise the substrate that has electrode, one is installed on the lens that described light-emitting diode chip for backlight unit established by the light-emitting diode chip for backlight unit that is electrically connected on described substrate and with electrode and a cover, it is characterized in that: described lens comprise a bottom surface, a side and an end face; Connection bottom surface, described side and end face; Described lens are a rotary body, have an optical axis; The side of described lens and end face along the section profile of lens axis in " M " shape; Described bottom center comprise one for accommodating described light-emitting diode chip for backlight unit, to the resettlement section of lens interior depression, the surface of described resettlement section is as the incidence surface of lens.
2. backlight module as claimed in claim 1, is characterized in that: described resettlement section is along the section profile parabolically shape of lens axis.
3. backlight module as claimed in claim 1, is characterized in that: the one side that described substrate is provided with light-emitting diode chip for backlight unit is reflecting surface.
4. backlight module as claimed in claim 1, is characterized in that: the section profile along optical axis of described end face is V-shaped, and the point on end face and the distance between bottom surface increase gradually along the direction away from optical axis.
5. backlight module as claimed in claim 4, it is characterized in that: the peak of described end face is positioned at end face and side joining place, minimum point is positioned at end face and optical axis intersection, the vertical range of highs and lows is less than 0.3mm, along minimum point and two peaks in the section of optical axis line between angle be 160 degree ~ 180 degree.
6. backlight module as claimed in claim 1, is characterized in that: described lens and substrate are identical material.
7. backlight module as claimed in claim 1, is characterized in that: the luminous intensity of described backlight module at lighting angle for maximum when-160 degree and 160 degree.
8. backlight module as claimed in claim 1, is characterized in that: described light-emitting diode chip for backlight unit outer cladding encapsulating material, the resettlement section cover of described lens establish described in be coated with the light-emitting diode chip for backlight unit of encapsulating material.
9. backlight module as claimed in claim 1, is characterized in that: containing fluorescent material in described lens.
10. the backlight module as described in claim 1 to 9 any one, is characterized in that: described backlight module is installed on circuit board, and the one side that this circuit board is provided with described backlight module has light-reflecting portion.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315649.8A CN104344274A (en) | 2013-07-25 | 2013-07-25 | Backlight module |
| TW102127716A TWI506345B (en) | 2013-07-25 | 2013-08-02 | Back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315649.8A CN104344274A (en) | 2013-07-25 | 2013-07-25 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104344274A true CN104344274A (en) | 2015-02-11 |
Family
ID=52500467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310315649.8A Pending CN104344274A (en) | 2013-07-25 | 2013-07-25 | Backlight module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104344274A (en) |
| TW (1) | TWI506345B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060273338A1 (en) * | 2005-06-03 | 2006-12-07 | Samsung Electro-Mechanics Co., Ltd. | High power LED package and fabrication method thereof |
| CN101150159A (en) * | 2006-09-22 | 2008-03-26 | 鸿富锦精密工业（深圳）有限公司 | LED and its lens body |
| CN101761866A (en) * | 2008-12-25 | 2010-06-30 | 创研光电股份有限公司 | Optical lens and light-emitted diode lighting device thereof |
| CN102168838A (en) * | 2011-03-15 | 2011-08-31 | 复旦大学 | One-step packaging LED (Light Emitting Diode) lens with free curve and design method of same |
| CN102237351A (en) * | 2010-04-30 | 2011-11-09 | 三星Led株式会社 | Light emitting device package, light source module, backlight unit, and illumination apparatus |
| TW201145609A (en) * | 2010-06-02 | 2011-12-16 | Advanced Optoelectronic Tech | Light-emitting diode package |
| CN103178190A (en) * | 2011-12-22 | 2013-06-26 | 展晶科技(深圳)有限公司 | Light-emitting diode light source and package method thereof |
| CN103187504A (en) * | 2011-12-27 | 2013-07-03 | 展晶科技(深圳)有限公司 | Package structure of light emitting diode |
| CN103208581A (en) * | 2012-01-17 | 2013-07-17 | 中央大学 | Light emitting diode lens |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620215B (en) * | 2012-04-11 | 2014-08-13 | 深圳市华星光电技术有限公司 | LED backlight light source |
| CN202938235U (en) * | 2012-10-26 | 2013-05-15 | 扬州雷笛克光学有限公司 | Optical lens forming square light shape |
| CN202927738U (en) * | 2012-11-09 | 2013-05-08 | 深圳Tcl新技术有限公司 | LED optical lens and LED backlight module |
-
2013
- 2013-07-25 CN CN201310315649.8A patent/CN104344274A/en active Pending
- 2013-08-02 TW TW102127716A patent/TWI506345B/en active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060273338A1 (en) * | 2005-06-03 | 2006-12-07 | Samsung Electro-Mechanics Co., Ltd. | High power LED package and fabrication method thereof |
| CN101150159A (en) * | 2006-09-22 | 2008-03-26 | 鸿富锦精密工业（深圳）有限公司 | LED and its lens body |
| CN101761866A (en) * | 2008-12-25 | 2010-06-30 | 创研光电股份有限公司 | Optical lens and light-emitted diode lighting device thereof |
| CN102237351A (en) * | 2010-04-30 | 2011-11-09 | 三星Led株式会社 | Light emitting device package, light source module, backlight unit, and illumination apparatus |
| TW201145609A (en) * | 2010-06-02 | 2011-12-16 | Advanced Optoelectronic Tech | Light-emitting diode package |
| CN102168838A (en) * | 2011-03-15 | 2011-08-31 | 复旦大学 | One-step packaging LED (Light Emitting Diode) lens with free curve and design method of same |
| CN103178190A (en) * | 2011-12-22 | 2013-06-26 | 展晶科技(深圳)有限公司 | Light-emitting diode light source and package method thereof |
| CN103187504A (en) * | 2011-12-27 | 2013-07-03 | 展晶科技(深圳)有限公司 | Package structure of light emitting diode |
| CN103208581A (en) * | 2012-01-17 | 2013-07-17 | 中央大学 | Light emitting diode lens |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI506345B (en) | 2015-11-01 |
| TW201506506A (en) | 2015-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150211 |
|
| RJ01 | Rejection of invention patent application after publication |