CN102062337A - Backlight assembly with LED (light emitting diode) uniform light structure - Google Patents
Backlight assembly with LED (light emitting diode) uniform light structure Download PDFInfo
- Publication number
- CN102062337A CN102062337A CN2010105481635A CN201010548163A CN102062337A CN 102062337 A CN102062337 A CN 102062337A CN 2010105481635 A CN2010105481635 A CN 2010105481635A CN 201010548163 A CN201010548163 A CN 201010548163A CN 102062337 A CN102062337 A CN 102062337A
- Authority
- CN
- China
- Prior art keywords
- led
- light
- photo structure
- equal photo
- lgp
- 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
Images
Abstract
The invention discloses a backlight assembly with an LED (light emitting diode) uniform light structure. The backlight assembly comprises a light guide plate, a plurality of LEDs, and a plurality of LED uniform light structures; the LED uniform light structures are positioned between the light guide plate and the plurality of LEDs; each LED uniform light structure comprises a light incident surface and a light exit surface; the light exit surfaces are opposite to the light guide plate; the light incident surfaces are opposite to the plurality of LEDs, each light incident surface is provided with a plurality of grooves, and each groove is corresponding with one LED. A minimum distance is reserved between the light exit surface of each LED uniform light structure and the light guide plate, the minimum distance must ensure that when the adjacent LED rays can not overlap in the interiors of the LED uniform light structures, the LED rays must overlap at gaps between the LED uniform light structures and the light guide plate. The LED rays enter the light incident surfaces of the LED uniform structures, and exit out of the light exit surfaces of the LED uniform light structures, and are controlled in a total reflection angle. In the invention, a point light source is changed into a line light source through one LED uniform structure, and then is changed into a surface light source by the light guide plate, and the phenomenon of bright alternating with dark in the prior art can be avoided effectively.
Description
Technical field
The present invention relates to a kind of backlight assembly, particularly a kind of backlight assembly that has the equal photo structure of LED.
Background technology
In the LCD module, use light emitting diode backlight (LED) has become a new trend at present, and existing backing structure as shown in Figure 1.The spot light of LED 1 outgoing becomes area source via LGP 3, sees through optical diaphragm group 4 again and provides a uniform surface light source for LCD panel 5.Wherein, LED1 is a spot light, and its bright dipping has certain directive property.
Fig. 2 is the light path schematic diagram of existing backlight technology.63 is normal, after incident ray 61 enters LGP 3, unirefringence takes place, and the angle of its light inlet can further be dwindled and be obtained refracted ray 62.In LGP 3, LED1 self can form territory, an area pellucida 72 like this, and can form a dark partially zone 71 between LED1 and LED1.Like this can be bright partially around the LED1, and can be dark partially 1 of two LEDs, will bright dark alternate phenomenon appear like this in the light inlet side.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention discloses and a kind ofly can improve light and dark phenomenon appears in prior art in the light inlet side backing structure.
A kind of backlight assembly that has the equal photo structure of LED comprises: LGP, some LED also comprise the equal photo structure of LED; The equal photo structure of described LED is between LGP and some LED; The equal photo structure of described LED comprises: incidence surface, exiting surface; Described exiting surface is facing to described LGP; Described incidence surface faces toward described some LED, and some grooves are arranged on the described incidence surface, and the corresponding LED of each groove.
Between the exiting surface of the equal photo structure of described LED and the described LGP minimum range is arranged, described minimum range must guarantee must obtain overlapping in the gap between equal photo structure of LED and the LGP when the light of adjacent LED can't be overlapping in the inside of the equal photo structure of LED.
The light of described LED enters the incidence surface of the equal photo structure of described LED, and comes out from the exiting surface of the equal photo structure of described LED, is controlled in the angle of total reflection.
A kind of backlight assembly that has the equal photo structure of LED comprises: LGP, some LED also comprise the equal photo structure of LED; The equal photo structure of described LED is between LGP and some LED; The equal photo structure of described LED comprises: incidence surface, exiting surface; Described exiting surface is facing to described LGP; Described incidence surface faces toward described some LED, and some grooves are arranged on the described incidence surface; Described groove has micro-structural, and the corresponding LED of each groove.
Between the exiting surface of the equal photo structure of described LED and the described LGP minimum range is arranged, described minimum range must guarantee must obtain overlapping in the gap between equal photo structure of LED and the LGP when the light of adjacent LED can't be overlapping in the inside of the equal photo structure of LED.
The light of described LED enters the incidence surface of the equal photo structure of described LED, and comes out from the exiting surface of the equal photo structure of described LED, is controlled in the angle of total reflection.
A kind of backlight assembly that has the equal photo structure of LED comprises: LGP, some LED also comprise the equal photo structure of LED; The equal photo structure of described LED is between LGP and some LED; The equal photo structure of described LED comprises: incidence surface, exiting surface; Described exiting surface is facing to described LGP; Described exiting surface has prism structure; Described incidence surface faces toward described some LED, and some grooves are arranged on the described incidence surface; Described groove has micro-structural, and the corresponding LED of each groove.
Between the exiting surface of the equal photo structure of described LED and the described LGP minimum range is arranged, described minimum range must guarantee must obtain overlapping in the gap between equal photo structure of LED and the LGP when the light of adjacent LED can't be overlapping in the inside of the equal photo structure of LED.
The light of described LED enters the incidence surface of the equal photo structure of described LED, and comes out from the exiting surface of the equal photo structure of described LED, is controlled in the angle of total reflection.
With respect to prior art, the present invention mainly is by the equal photo structure of a LED, and LED is earlier all turned to a line source, and is coupled into and becomes an area source in the LGP, thereby solves the bright dark alternate phenomenon that occurs in the prior art.
?
Description of drawings
Fig. 1 is the LCD exploded view of existing backlight technology;
Fig. 2 is the light path schematic diagram of existing backlight technology;
Fig. 3 is the LCD exploded view of the embodiment of the invention 1;
Fig. 4 is the equal photo structure index path of LED of the flat bottomed recess structure of the embodiment of the invention 1;
Fig. 5 is the equal photo structure index path of LED of the groove structure of the sharp end of the embodiment of the invention 1;
Fig. 6 is the comparison diagram of existing backlight technology and embodiment 1 backlight technology;
Fig. 7 is the equal photo structure schematic diagram of the LED of the embodiment of the invention 2;
Fig. 8 is the equal photo structure index path of the LED of the embodiment of the invention 2;
Fig. 9 is the equal photo structure schematic diagram of the LED of the embodiment of the invention 3;
Figure 10 is the equal photo structure index path of the LED of the embodiment of the invention 3.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 3, Fig. 4, Fig. 5.A kind of backlight assembly 100 that has the equal photo structure of LED comprises: LGP 3, the equal photo structure 2 of LED, some LED1; The equal photo structure 2 of described LED is between LGP 3 and some LED1; The equal photo structure 2 of described LED comprises: incidence surface 21, exiting surface 22; Described exiting surface 22 is facing to described LGP 3; Described incidence surface 21 faces toward described some LED1, and some grooves 211 are arranged on the described incidence surface 21, and each groove 211 corresponding LED1.The shape of described groove 211 can be varied, and the present invention does not make qualification to this.Fig. 4, Fig. 5 provide the index path of the correspondence of flat bottomed recess, two kinds of shaped recesses of point end groove respectively, only for for example, the present invention are not made qualification.
The material of the equal photo structure 2 of described LED is high molecular polymer or other similar materials, emit beam from LED1, and this is stated light and enters wherein via the incidence surface 21 of the equal photo structure 2 of LED, refraction angle by 2 pairs of light of the equal photo structure of LED is carried out certain change, obtain each section line source uniformly from exiting surface 22, enter LGP 3 inside again, afterwards by optical diaphragm group 4, at emitting uniform area source of LCD panel 5 final formation.
LED1 sends incident ray 61, the incidence surface 21 that enters the equal photo structure 2 of LED obtains refracted ray 64 for the first time, because the light of LED1 is to inject optically denser medium via optically thinner medium, so refracted ray 64 is than the once low-angle convergence of incident ray 61 meetings for the first time, or might realize that in this equal photo structure light path is overlapping, as shown in Figure 4, the refracted ray 64 of the correspondence of adjacent LED1 is overlapping in the equal photo structure of LED 2 inside.For, can't realize above-mentioned overlapping situation, as shown in Figure 5, refracted ray 64 obtains refracted ray 65 for the second time from exiting surface 22 ejaculations of the equal photo structure 2 of LED for the first time, because this time the light of LED1 is to enter optically thinner medium from optically denser medium, so refracted ray 65 ratio refracted rays 61 first time have an angle amplification for the second time.Among Fig. 5 67 is the extended line of incident ray 61, and it is represented by dotted lines, and do not have practical significance, only is used for representing the direction of incident ray 61.Like this, the light of adjacent LED1 through twice refraction after, realization is overlapping in the gap that can be between the equal photo structure 2 of LED and LGP 3.Just require to exist between equal photo structure 2 of LED and the LGP 3 a minimum range d this moment, this minimum range d guarantees must to obtain overlapping in the gap between equal photo structure 2 of LED and the LGP 3 when the light of adjacent LED1 can't be overlapping in the inside of the equal photo structure 2 of LED.Distance between equal photo structure 2 of LED and the LGP 3 must be not less than this minimum range d.
Simultaneously, because the angle of refracted ray 65 can become big for the second time, might on exiting surface 22 total reflection phenomenon appear just, therefore more excellent is the incidence surface 21 and the exiting surface 22 of the equal photo structure 2 of control LED, and the refracted ray second time of first refracted ray 64 on exiting surface 22 65 is controlled in the angle of total reflection.
As Fig. 6, for ease of better showing the effect of embodiment 1, we are the situation 73 of the structure of Fig. 4, the situation 71 of the structure of Fig. 5, and the situation 72 of prior art correspondence places same figure under identical condition.After can finding to use this invention effective shortening light path crossover range can be arranged, and then avoid occurring the bad phenomenon of light and shade inequality in actual use.
Present embodiment is an improvement of being done on the basis of embodiment 1, and the difference of it and embodiment 1 is, adds micro-structurals 212 at the groove 211 of the incidence surface 21 of the equal photo structure 2 of described LED.
As Fig. 7, realize that in order to make light light path is overlapping in shorter distance, can increase corresponding micro-structural 212 at the groove 211 of the incidence surface 21 of the equal photo structure 2 of LED of the present invention accordingly, thereby make the light of LED1 obtain more extensive angle at contact incidence surface 21 and the time marquis that is refracted into the equal photo structure of LED 2 inside.
Fig. 8 is the equal photo structure index path of the LED of the embodiment of the invention 2.In the time of the incident ray 61 contact incidence surface 21 of LED1, micro-structural 212 effects because of the groove 211 of its incidence surface 21 make that the light after the refraction has wider angle, thereby are implemented in overlapping in the equal photo structure 2 of this LED.But it is similar to embodiment 1, distance between equal photo structure 2 of LED and the LGP 3 must be not less than minimum range d, and this structure still should be noted that the incidence surface 21 and the exiting surface 22 of control LED equal photo structure 2, and the second time refracted ray of its first refracted ray 64 on exiting surface 22 65 is controlled in the angle of total reflection.
Present embodiment is an improvement of being done on the basis of embodiment 2, and the difference of it and embodiment 2 is, adds prism structure 221 on the exiting surface 22 of the equal photo structure 2 of described LED.
As Fig. 9, for the bright dipping that makes the equal photo structure 2 of this LED can enter LGP 3 inside to greatest extent, can increase prism structure 221 at the exiting surface 22 of the equal photo structure 2 of this LED accordingly, make and inwardly restrained at Z, thereby enter LGP 3 inside to a greater extent from the light of this structure ejaculation.
In the time of refracted ray 64 contact first time exiting surface 22, can carry out reflecting second time, increase this prism structure after, its light along vertical direction can be restrained accordingly, and the light of horizontal direction is dispersed and can not be affected its index path such as Figure 10.Thereby allow more rays enter LGP 3 inside, improve the optics utilization rate.
But it is similar to embodiment 1, distance between equal photo structure 2 of LED and the LGP 3 must be not less than minimum range d, and this structure still should be noted that the incidence surface 21 and the exiting surface 22 of control LED equal photo structure 2, and the second time refracted ray of its first refracted ray 64 on exiting surface 22 65 is controlled in the angle of total reflection.
The present invention mainly is by the equal photo structure of a LED, and LED is earlier all turned to a line source, and is coupled into and becomes an area source in the LGP, thereby solves the bright dark alternate phenomenon that occurs in the prior art.
More than disclosed only be several specific embodiments of the application, but the application is not limited thereto, any those skilled in the art can think variation, all should drop in the application's the protection domain.
Claims (9)
1. backlight assembly that has the equal photo structure of LED comprises: LGP, some LED, it is characterized in that, and also comprise the equal photo structure of LED; The equal photo structure of described LED is between LGP and some LED; The equal photo structure of described LED comprises: incidence surface, exiting surface; Described exiting surface is facing to described LGP; Described incidence surface faces toward described some LED, and some grooves are arranged on the described incidence surface, and the corresponding LED of each groove.
2. a kind of backlight assembly that has the equal photo structure of LED according to claim 1, it is characterized in that: between the exiting surface of the equal photo structure of described LED and the described LGP minimum range is arranged, described minimum range must guarantee must obtain overlapping in the gap between equal photo structure of LED and the LGP when the light of adjacent LED can't be overlapping in the inside of the equal photo structure of LED.
3. a kind of backlight assembly that has the equal photo structure of LED according to claim 1, it is characterized in that: the light of described LED enters the incidence surface of the equal photo structure of described LED, and comes out from the exiting surface of the equal photo structure of described LED, is controlled in the angle of total reflection.
4. backlight assembly that has the equal photo structure of LED comprises: LGP, some LED, it is characterized in that, and also comprise the equal photo structure of LED; The equal photo structure of described LED is between LGP and some LED; The equal photo structure of described LED comprises: incidence surface, exiting surface; Described exiting surface is facing to described LGP; Described incidence surface faces toward described some LED, and some grooves are arranged on the described incidence surface; Described groove has micro-structural, and the corresponding LED of each groove.
5. a kind of backlight assembly that has the equal photo structure of LED according to claim 4, it is characterized in that: between the exiting surface of the equal photo structure of described LED and the described LGP minimum range is arranged, described minimum range must guarantee must obtain overlapping in the gap between equal photo structure of LED and the LGP when the light of adjacent LED can't be overlapping in the inside of the equal photo structure of LED.
6. a kind of backlight assembly that has the equal photo structure of LED according to claim 4, it is characterized in that: the light of described LED enters the incidence surface of the equal photo structure of described LED, and comes out from the exiting surface of the equal photo structure of described LED, is controlled in the angle of total reflection.
7. backlight assembly that has the equal photo structure of LED comprises: LGP, some LED, it is characterized in that, and also comprise the equal photo structure of LED; The equal photo structure of described LED is between LGP and some LED; The equal photo structure of described LED comprises: incidence surface, exiting surface; Described exiting surface is facing to described LGP; Described exiting surface has prism structure; Described incidence surface faces toward described some LED, and some grooves are arranged on the described incidence surface; Described groove has micro-structural, and the corresponding LED of each groove.
8. a kind of backlight assembly that has the equal photo structure of LED according to claim 7, it is characterized in that: between the exiting surface of the equal photo structure of described LED and the described LGP minimum range is arranged, described minimum range must guarantee must obtain overlapping in the gap between equal photo structure of LED and the LGP when the light of adjacent LED can't be overlapping in the inside of the equal photo structure of LED.
9. a kind of backlight assembly that has the equal photo structure of LED according to claim 7, it is characterized in that: the light of described LED enters the incidence surface of the equal photo structure of described LED, and comes out from the exiting surface of the equal photo structure of described LED, is controlled in the angle of total reflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105481635A CN102062337A (en) | 2010-11-18 | 2010-11-18 | Backlight assembly with LED (light emitting diode) uniform light structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105481635A CN102062337A (en) | 2010-11-18 | 2010-11-18 | Backlight assembly with LED (light emitting diode) uniform light structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102062337A true CN102062337A (en) | 2011-05-18 |
Family
ID=43997740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105481635A Pending CN102062337A (en) | 2010-11-18 | 2010-11-18 | Backlight assembly with LED (light emitting diode) uniform light structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102062337A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800253A (en) * | 2012-08-08 | 2012-11-28 | 深圳市大族元亨光电股份有限公司 | Variable information marker for freeway and urban LEDs |
| CN103511911A (en) * | 2012-06-26 | 2014-01-15 | 扬升照明股份有限公司 | Light source module |
| CN104235683A (en) * | 2013-06-12 | 2014-12-24 | 乐金显示有限公司 | Light emitting diode assembly and liquid crystal display device including the same |
| CN106764683A (en) * | 2016-12-23 | 2017-05-31 | 惠州华阳通用电子有限公司 | A kind of knob light guiding ring structure and its light control method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604706Y (en) * | 2003-02-18 | 2004-02-25 | 鸿富锦精密工业（深圳）有限公司 | Back light module block |
| CN1542522A (en) * | 2003-04-16 | 2004-11-03 | ���ǵ�����ʽ���� | Light guide panel of edge-light type backlight system and edge-light type backlight system employing the same |
| CN1570720A (en) * | 2003-07-23 | 2005-01-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight source device and liquid crystal display |
| CN2842485Y (en) * | 2005-09-16 | 2006-11-29 | 群康科技(深圳)有限公司 | Light guide plate and module backlight |
| CN101004253A (en) * | 2006-01-16 | 2007-07-25 | 三星电机株式会社 | Light guide panel and display device employing the same |
| CN101078795A (en) * | 2006-05-24 | 2007-11-28 | 清华大学 | Light conducting board and backlight module |
| CN101178511A (en) * | 2006-11-10 | 2008-05-14 | 群康科技(深圳)有限公司 | Back light module unit and LCD device |
| CN201412745Y (en) * | 2009-06-12 | 2010-02-24 | 华映视讯（吴江）有限公司 | Direct backlight module and light transmission board for backlight module |
-
2010
- 2010-11-18 CN CN2010105481635A patent/CN102062337A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2604706Y (en) * | 2003-02-18 | 2004-02-25 | 鸿富锦精密工业（深圳）有限公司 | Back light module block |
| CN1542522A (en) * | 2003-04-16 | 2004-11-03 | ���ǵ�����ʽ���� | Light guide panel of edge-light type backlight system and edge-light type backlight system employing the same |
| CN1570720A (en) * | 2003-07-23 | 2005-01-26 | 鸿富锦精密工业（深圳）有限公司 | Backlight source device and liquid crystal display |
| CN2842485Y (en) * | 2005-09-16 | 2006-11-29 | 群康科技(深圳)有限公司 | Light guide plate and module backlight |
| CN101004253A (en) * | 2006-01-16 | 2007-07-25 | 三星电机株式会社 | Light guide panel and display device employing the same |
| CN101078795A (en) * | 2006-05-24 | 2007-11-28 | 清华大学 | Light conducting board and backlight module |
| CN101178511A (en) * | 2006-11-10 | 2008-05-14 | 群康科技(深圳)有限公司 | Back light module unit and LCD device |
| CN201412745Y (en) * | 2009-06-12 | 2010-02-24 | 华映视讯（吴江）有限公司 | Direct backlight module and light transmission board for backlight module |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511911A (en) * | 2012-06-26 | 2014-01-15 | 扬升照明股份有限公司 | Light source module |
| US9074754B2 (en) | 2012-06-26 | 2015-07-07 | Young Lighting Technology Inc. | Light source module |
| CN103511911B (en) * | 2012-06-26 | 2016-08-24 | 扬升照明股份有限公司 | Light source module |
| CN102800253A (en) * | 2012-08-08 | 2012-11-28 | 深圳市大族元亨光电股份有限公司 | Variable information marker for freeway and urban LEDs |
| CN102800253B (en) * | 2012-08-08 | 2014-10-29 | 深圳市大族元亨光电股份有限公司 | Variable information marker for freeway and urban LEDs |
| CN104235683A (en) * | 2013-06-12 | 2014-12-24 | 乐金显示有限公司 | Light emitting diode assembly and liquid crystal display device including the same |
| US9454036B2 (en) | 2013-06-12 | 2016-09-27 | Lg Display Co., Ltd. | Light emitting diode assembly and liquid crystal display device including the same |
| CN106764683A (en) * | 2016-12-23 | 2017-05-31 | 惠州华阳通用电子有限公司 | A kind of knob light guiding ring structure and its light control method |
| CN106764683B (en) * | 2016-12-23 | 2023-04-18 | 惠州华阳通用电子有限公司 | Knob light guide ring structure and light control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203217229U (en) | Light-emitting device and projection system | |
| CN102003676B (en) | Lens | |
| CN109212660B (en) | Light guide assembly, light collimation assembly, backlight module and display device | |
| CN101655213A (en) | Light-emitting diode light source module | |
| KR20040070843A (en) | A Light Guide Panel With Guided-light Parts | |
| CN102809105A (en) | Backlight module and display device | |
| US20140347602A1 (en) | Backlight module for liquid crystal display | |
| US10613375B2 (en) | Backlight module and liquid crystal display device | |
| CN102062337A (en) | Backlight assembly with LED (light emitting diode) uniform light structure | |
| CN104375236A (en) | Light guide plate, backlight module and display | |
| CN207851344U (en) | A kind of light guide plate, backlight module and display device | |
| CN106287579A (en) | Slim light guide unit and backlight module | |
| CN103375732A (en) | Backlight module, light guide plate of backlight module, and display comprising the backlight module | |
| CN202494798U (en) | Light guide plate, backlight module and liquid crystal display device | |
| US20240012192A1 (en) | Anti-peeping backlight module | |
| CN101761829B (en) | Backlight module and display device using same | |
| CN103782204A (en) | Optical sheet | |
| CN101158784A (en) | Back light source | |
| CN101725899A (en) | Lighting device | |
| CN104820258B (en) | A kind of integrated guide tabula rasa with light diffusion function | |
| CN101650494A (en) | Backlight module and optical plate thereof | |
| CN108387955B (en) | Peep-proof lens, peep-proof device and display device | |
| CN105467504A (en) | Direct backlight module and display device | |
| CN103090203A (en) | Plane lighting device | |
| CN104678650A (en) | Backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110518 |