CN104515029A - Lateral type backlight module - Google Patents
Lateral type backlight module Download PDFInfo
- Publication number
- CN104515029A CN104515029A CN201310443817.1A CN201310443817A CN104515029A CN 104515029 A CN104515029 A CN 104515029A CN 201310443817 A CN201310443817 A CN 201310443817A CN 104515029 A CN104515029 A CN 104515029A
- Authority
- CN
- China
- Prior art keywords
- guide plate
- light guide
- light
- lens
- side entrance
- 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
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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/0015—Fastening arrangements intended to retain light sources
-
- 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
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a lateral type backlight module. The lateral type backlight module comprises a light guide plate, a light emitting diode arranged on the end surface of the light guide plate, and a lens arranged on the top surface of the light guide plate, wherein the lens comprises a bottom surface attached to the top surface of the light guide plate, and a light distribution surface extending from the bottom surface; and a lattice point area is arranged on the bottom surface, opposite to the top surface, of the light guide plate, and is aligned to the middle of the light distribution surface of the lens. After light rays emitted by the light emitting diode arranged at one side of the lens are scattered by the lattice point area on the bottom surface of the lens and are distributed by the light distribution surface of a light outlet surface, the light intensity in the middle of the lens can be weakened, and the peripheral light intensity of the lens can be intensified, so that the effects of eliminating a dark space and making the light rays uniform are achieved; and the lateral type backlight module has a simple structure and good optical effect.
Description
Technical field
The present invention relates to a kind of backlight module, particularly a kind of side entrance back module.
Background technology
Common side entrance back module comprises loading plate, the encapsulated layer of the light emitting diode be installed on loading plate, coated light emitting diode and the lens be located at above loading plate and light emitting diode.Fluorescent material is evenly distributed with in encapsulated layer.The light that light emitting diode sends obtains the predetermined light of specific colour temperature and color after exciting the fluorescent material in encapsulated layer, these predetermined light throw light on after lens diffusion.But, because light emitting diode has the characteristics of luminescence that middle part light intensity is large, periphery light intensity is little, therefore, the fluorescent material everywhere of encapsulated layer inside excites inconsistent, so, the brightness causing entering loading plate predetermined light is everywhere inconsistent and cause the generation of the backlight module uneven and coloured light circle of light and shade everywhere.
Summary of the invention
In view of this, be necessary to provide a kind of brightness throughout uniform side entrance back module.
A kind of side entrance back module, comprise light guide plate, be arranged on the light emitting diode of the end face of described light guide plate, be arranged on the lens of described light guide plate end face, described lens comprise the bottom surface being attached at described light guide plate end face and the light distribution surface extended from bottom surface, the bottom surface that described light guide plate is relative with end face is provided with dot area, just to setting in the middle part of the light distribution surface of described dot area and described lens.
Compared with prior art, the light that the light emitting diode being arranged on lens side in the present invention sends is after the dot area scattering of lens base and the light distribution surface luminous intensity distribution of exiting surface, can realize weakening light intensity in the middle part of lens, strengthening lens periphery light intensity, thus reaching the effect eliminating dark space, uniform light, structure is simple, optical effect good.
With reference to the accompanying drawings, the invention will be further described in conjunction with specific embodiments.
Accompanying drawing explanation
Fig. 1 is the side view after the removing reflecting plate of the side entrance back module of first embodiment of the invention.
Fig. 2 is the top view of the module of side entrance back shown in Fig. 1.
Fig. 3 is the sectional view of the side entrance back module shown in Fig. 2.
Fig. 4 is the sectional view of the side entrance back module of second embodiment of the invention.
Main element symbol description
| Light guide plate | 10 |
| Light emitting diode | 30 |
| Dot area | 50 |
| Depression | 51 |
| Micro-structural | 53 |
| Lens | 70、70a |
| Bottom surface | 71、71a |
| First exiting surface | 73、73a |
| Second exiting surface | 75 |
| Light distribution surface | 77、77a |
| Reflecting plate | 90 |
| Side entrance back module | 100、100a |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
As shown in Figures 1 and 2, the side entrance back module 100 of first embodiment of the invention comprises a light guide plate 10, is arranged on a light emitting diode 30 of described light guide plate 10 one end, is arranged at multiple dot area 50 of light guide plate 10 bottom surface, is fixed on light guide plate 10 end face and just sees Fig. 3 to multiple lens 70 of dot area 50 and the two reflecting plate 90(that are fixed on described light guide plate 10 both sides relatively).
Described light guide plate 10 is a lengthwise and the uniform plate body of thickness, for the light that mixed luminescence diode 30 sends.The bottom surface of described light guide plate 10 is parallel to its end face.
Described dot area 50 is arranged along the parallel longitudinal interval of light guide plate 10.Each dot area 50 is along the laterally extending of light guide plate 10 and run through the transverse direction of whole light guide plate 10.Described dot area 50 is for arriving the light at dot area 50 place for scattering.Each dot area 50 comprises the depression 51 caved in towards end face from the bottom surface of described light guide plate 10 and the micro-structural 53 being positioned at described depression 51.These depressions 51 are arranged along the length direction parallel interval of light guide plate 10.Each depression 51 runs through the transverse direction of light guide plate 10.The longitudinal section of each depression 51 is roughly in square.The density of each dot area 50 micro-structural 53 is everywhere identical.The density of the micro-structural 53 of different dot area 50 along light guide plate 10 longitudinal, increase gradually to the one end away from light emitting diode 30 from the one end near light emitting diode 30.Understandable, these micro-structurals can be this projection, depression or other structures, as long as can reach the effect of heat radiation light.
Please refer to Fig. 3, described reflecting plate 90 is made up of high reverse--bias material, is attached on the relative two sides of described light guide plate 10.The area of each light guide plate 10 is more than or equal to the area of the side of described light guide plate 10, thus hides the side of light guide plate 10 completely.In the present embodiment, each reflecting plate 90 is the thin plate of a lengthwise, and its size equals the size of the side of described light guide plate 10, and reflecting plate 90 is just sticked to the side of light guide plate 10, thus hides the side of light guide plate 10 completely.
Please again consult Fig. 1 and Fig. 3, the light distribution surface 77 that each lens 70 comprises a bottom surface 71, the first exiting surface 73 outwards protruded out from edge, bottom surface 71, the second exiting surface 75 extended vertically upward from the first exiting surface 73 top and is recessed to form towards light guide plate 10 from the second exiting surface 75 top.Described lens 70 are a rotary body, and the longitudinal section of its first exiting surface 73 is the bracket shape of evagination, and the longitudinal section of described second exiting surface 75 is rectangular, and the longitudinal section of described light distribution surface 77 is V-shaped.Described bottom surface 71 is sticked in the middle part of the end face of light guide plate 10 and its just to corresponding dot area 50.The diameter of described first exiting surface 73 is greater than the diameter of the second exiting surface 75.The diameter of bottom surface 71 is equal to or greater than the size of described light guide plate 10 transverse direction, thus lens 70 are sticked after on light guide plate 10, can hide corresponding dot area 50 completely.In the present embodiment, the diameter of the bottom surface 71 of each lens 70 equals the size of light guide plate 10 transverse direction.Described light distribution surface 77 is reflecting surface, for by described by arrive lens 70 light reflection after, from the outwards outgoing of the first exiting surface 73 and the second exiting surface 75, thus reduce light intensity in the middle part of lens 70, strengthen the light intensity of lens 70 periphery, and then make the outside outgoing of uniform light.
Described light emitting diode 30 is arranged on light guide plate 10 one end, and itself and size are less than or equal to the size of light guide plate 10 respective end.In the present embodiment, the size of described light emitting diode 30 equals the size of described light guide plate 10 respective end.
When described side entrance back module 100 works, the light that light emitting diode 30 sends to be injected towards the relative other end from one end of light guide plate 10 in light guide plate 10 and is carried out mixed light along on the length direction of light guide plate 10.Wherein, after part light arrives dot area 50, after the micro-structural 53 of dot area 50 carries out scattering to these light, make these light towards lens 70 outgoing, wherein, part light is direct through the first exiting surface 73 and the second exiting surface 75 outgoing through the bottom surface 71 of lens 70, another part light through light distribution surface 77 reflect after through the first exiting surface 73, second exiting surface 75 outgoing, so, reach and slacken light intensity in the middle part of lens 70, enhancing periphery light intensity, reach uniform light intensity with this, increase the object of rising angle; Another part light directive two reflecting plate 90, repeats above-mentionedly to scatter to lens 70 from micro-structural 53 after two reflecting plates 90 reflect, through lens 70 luminous intensity distribution go out light path after, realize the uniform of light.
Figure 4 shows that the side entrance back module 100a of second embodiment of the invention, described side entrance back module 100a is similar to the side entrance back module 100 of the first embodiment, its difference is: the first exiting surface 73a that described lens 70a has bottom surface 71a, outside projection is formed from 71a edge, bottom surface and the light distribution surface 77a formed from the first exiting surface 73a top indent, described light distribution surface 77a is V-shaped plane of refraction, and the longitudinal section of described lens 70a is in " M " shape.Described light distribution surface 77a, for reflecting the light arrived in the middle part of lens 70a, makes it towards the first exiting surface 73a outgoing.
In the present embodiment, when described side entrance back module 100a works, the light that light emitting diode 30 sends to be injected towards the relative other end from one end of light guide plate 10 in light guide plate 10 and is carried out mixed light along on the length direction of light guide plate 10.Wherein, after part light arrives dot area 50, after the micro-structural 53 of dot area 50 carries out scattering to these light, make these light towards lens 70a outgoing, wherein, part light is direct through the first exiting surface 73a outgoing through the bottom surface 71 of lens 70, another part light directive light distribution surface 77a, in the light of directive light distribution surface 77a, a part is directly through light distribution surface 77a outgoing, another part light through light distribution surface 77a refraction after from the first exiting surface 73a outgoing, so, reach and slacken light intensity in the middle part of lens 70a, strengthen periphery light intensity, uniform light intensity is reached with this, increase the object of rising angle, another part light directive two reflecting plate 90, repeats above-mentionedly to scatter to lens 70a from micro-structural 53 after two reflecting plates 90 reflect, through lens 70a luminous intensity distribution go out light path after, realize the uniform of light.
Compared with prior art, after light distribution surface 77 luminous intensity distribution of dot area 50 scattering of the light that the light emitting diode 30 being arranged on light guide plate 10 side in the present invention sends through light guide plate 10 bottom surface and lens 70, the effect eliminating dark space, uniform light can be realized.
And in the present invention, light, not by the restriction of dot area 50 size, as long as can coordinate with the end face of light guide plate 10, is all imported light guide plate 10 by the size of light emitting diode 30.
Be understandable that, for the person of ordinary skill of the art, other various corresponding change and distortion can be made by technical conceive according to the present invention, and all these change the protection domain that all should belong to the claims in the present invention with distortion.
Claims (10)
1. a side entrance back module, comprise light guide plate, be arranged on the light emitting diode of the end face of described light guide plate, be arranged on the lens of described light guide plate end face, described lens comprise the bottom surface being attached at described light guide plate end face and the light distribution surface extended from bottom surface, it is characterized in that: the bottom surface that described light guide plate is relative with end face is provided with dot area, just to setting in the middle part of the light distribution surface of described dot area and described lens.
2. side entrance back module as claimed in claim 1, is characterized in that: described dot area comprises the depression caved in towards end face from the bottom surface of described light guide plate and the micro-structural being positioned at described depression.
3. side entrance back module as claimed in claim 2, is characterized in that: the quantity of described dot area has multiple, and these dot area arrange along the parallel longitudinal interval of light guide plate and run through the transverse direction of light guide plate.
4. side entrance back module as claimed in claim 3, is characterized in that: the density of the micro-structural of described multiple dot area along light guide plate longitudinal, increase gradually to the one end away from light emitting diode from the one end near light emitting diode.
5. side entrance back module as claimed in claim 3, is characterized in that: the density of each dot area described micro-structural is everywhere identical.
6. side entrance back module as claimed in claim 1, is characterized in that: the relative two sides of described light guide plate have been sticked respectively reflecting plate.
7. side entrance back module as claimed in claim 6, is characterized in that: described reflecting plate hides the relative two sides of described light guide plate completely.
8. side entrance back module as claimed in claim 1, is characterized in that: the longitudinal section of described light distribution surface is V-shaped.
9. side entrance back module as claimed in claim 8, is characterized in that: described light distribution surface is reflecting surface or plane of refraction.
10. side entrance back module as claimed in claim 1, is characterized in that: described lens also comprise the exiting surface connecting described light distribution surface and bottom surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310443817.1A CN104515029A (en) | 2013-09-26 | 2013-09-26 | Lateral type backlight module |
| TW102135440A TWI553272B (en) | 2013-09-26 | 2013-09-30 | Side view backlight modul |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310443817.1A CN104515029A (en) | 2013-09-26 | 2013-09-26 | Lateral type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104515029A true CN104515029A (en) | 2015-04-15 |
Family
ID=52790732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310443817.1A Pending CN104515029A (en) | 2013-09-26 | 2013-09-26 | Lateral type backlight module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104515029A (en) |
| TW (1) | TWI553272B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116598A (en) * | 2015-09-11 | 2015-12-02 | 青岛海信电器股份有限公司 | Backlight module, prismatic lens and television set |
| CN107533186A (en) * | 2015-04-16 | 2018-01-02 | 宗拓贝尔照明器材有限公司 | Optical system and the device for light output |
| CN108761586A (en) * | 2018-08-16 | 2018-11-06 | 浙江彩丞照明科技有限公司 | A kind of optical lens of achievable large spot |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2619291Y (en) * | 2003-05-21 | 2004-06-02 | 力捷电脑股份有限公司 | Light guide plate model of side light type back light module |
| CN1508570A (en) * | 2002-12-14 | 2004-06-30 | 鸿富锦精密工业（深圳）有限公司 | Light board device |
| CN1769977A (en) * | 2004-11-03 | 2006-05-10 | 三星电子株式会社 | Backlight unit and liquid crystal display employing the same |
| CN101718887A (en) * | 2008-10-09 | 2010-06-02 | 林峰立 | Light guide plate |
| CN202256752U (en) * | 2011-09-28 | 2012-05-30 | 北京京东方光电科技有限公司 | Light guide plate and backlight module |
| CN202955650U (en) * | 2012-12-17 | 2013-05-29 | 上海冠旗电子新材料股份有限公司 | Light guide plate for backlight module |
| JP2013105575A (en) * | 2011-11-11 | 2013-05-30 | Sumitomo Chemical Co Ltd | Light guide plate, planar light source device, and transmission image display device |
| CN103307510A (en) * | 2012-03-15 | 2013-09-18 | 欧姆龙株式会社 | Surface light source device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI393956B (en) * | 2008-06-25 | 2013-04-21 | Helio Optoelectronics Corp | Flexible backlight module structure |
| CN201992566U (en) * | 2010-12-23 | 2011-09-28 | 四川九洲光电科技股份有限公司 | Wide-angle light distribution lens for light emitting diode (LED) |
| TW201239266A (en) * | 2011-03-25 | 2012-10-01 | Yeh Chiang Technology Corp | Light-emitting diode flat light |
| TWI473954B (en) * | 2012-03-14 | 2015-02-21 | Wen Shin Pan | Light-emitting module for changing optical paths by the internal reflection |
-
2013
- 2013-09-26 CN CN201310443817.1A patent/CN104515029A/en active Pending
- 2013-09-30 TW TW102135440A patent/TWI553272B/en not_active IP Right Cessation
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508570A (en) * | 2002-12-14 | 2004-06-30 | 鸿富锦精密工业（深圳）有限公司 | Light board device |
| CN2619291Y (en) * | 2003-05-21 | 2004-06-02 | 力捷电脑股份有限公司 | Light guide plate model of side light type back light module |
| CN1769977A (en) * | 2004-11-03 | 2006-05-10 | 三星电子株式会社 | Backlight unit and liquid crystal display employing the same |
| CN101718887A (en) * | 2008-10-09 | 2010-06-02 | 林峰立 | Light guide plate |
| CN202256752U (en) * | 2011-09-28 | 2012-05-30 | 北京京东方光电科技有限公司 | Light guide plate and backlight module |
| JP2013105575A (en) * | 2011-11-11 | 2013-05-30 | Sumitomo Chemical Co Ltd | Light guide plate, planar light source device, and transmission image display device |
| CN103307510A (en) * | 2012-03-15 | 2013-09-18 | 欧姆龙株式会社 | Surface light source device |
| CN202955650U (en) * | 2012-12-17 | 2013-05-29 | 上海冠旗电子新材料股份有限公司 | Light guide plate for backlight module |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107533186A (en) * | 2015-04-16 | 2018-01-02 | 宗拓贝尔照明器材有限公司 | Optical system and the device for light output |
| CN107533186B (en) * | 2015-04-16 | 2020-02-14 | 宗拓贝尔照明器材有限公司 | Optical system and device for light output |
| CN105116598A (en) * | 2015-09-11 | 2015-12-02 | 青岛海信电器股份有限公司 | Backlight module, prismatic lens and television set |
| CN105116598B (en) * | 2015-09-11 | 2018-09-28 | 青岛海信电器股份有限公司 | A kind of backlight module, prismatic lens and television set |
| CN108761586A (en) * | 2018-08-16 | 2018-11-06 | 浙江彩丞照明科技有限公司 | A kind of optical lens of achievable large spot |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI553272B (en) | 2016-10-11 |
| TW201514423A (en) | 2015-04-16 |
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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: 20150415 |
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| RJ01 | Rejection of invention patent application after publication |