CN101169553A - Mediate, large size visual region liquid crystal screen backlight product - Google Patents
Mediate, large size visual region liquid crystal screen backlight product Download PDFInfo
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- CN101169553A CN101169553A CNA2007100315656A CN200710031565A CN101169553A CN 101169553 A CN101169553 A CN 101169553A CN A2007100315656 A CNA2007100315656 A CN A2007100315656A CN 200710031565 A CN200710031565 A CN 200710031565A CN 101169553 A CN101169553 A CN 101169553A
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Abstract
The invention discloses a large-medium backlight product for the visual areas of LCD screens, which comprises the positions of light sources and the relative relationship between the positions of light sources and a lightening area. The invention is characterized in that an angle theta formed by a main light axle of the light sources and the lightening area is ranged from 20 degrees to 60 degrees. Compared with the prior art, the invention has following good effects: 1. the outlay of the light sources of the invention is very special, and the consumption of the non-renewable energy can be reduced with the reducing of the number of the light sources; meanwhile, the consumption of the electric energy is also reduced greatly, thereby saving the energy; 2. the invention adds a cooling structure to drive the unnecessary heat out by a conductive aluminum and a lower iron frame of the product, thereby reducing the damage of the product caused by heat can be reduced greatly, improving the reliability and prolonging the service life of the products; 3. the invention uses light-emitting diodes as the light sources to replace cold cathode tubes and to eliminate the mercury capacity of products, thereby being beneficial to protecting environment.
Description
Technical field
The invention belongs to the liquid crystal screen back light source technical field, more specifically relate to a kind of in, large scale visible area liquid crystal screen backlight product.
Background technology
In the liquid crystal screen back light source product, the photoelectricity effect and the utilization rate of electrical of product cause direct influence to end product.More and more universal along with liquid crystal display requires more and more highlyer to the brightness of module and brightness uniformity, in order to adapt to this requirement, used method is at present increases quantity of light source or blooming piece quantity.
Shown in Figure of description 1, mill run light source arrangement mode is as follows at present: the primary optical axis 2 of light source 1 is 90 degree angles with the horizontal direction of luminous zone 3 or vertical direction, need to use the plurality of LEDs light source can reach desirable optical effect, technique known adopts the method more at present.
The weak point of this light source arrangement mode is that former material cost is than higher, and the electric energy of consumption and thermal value are all bigger, have both caused the energy too much to consume, and causes former material consumption again.
Summary of the invention
The objective of the invention is to overcome the defective that prior art exists, provide a kind of in, large scale visible area liquid crystal screen backlight product.
For achieving the above object, the present invention has taked following technical scheme:
In, large scale visible area liquid crystal screen backlight product, comprise light source and luminous zone, the level of light source primary optical axis and luminous zone is an angle theta, the scope of θ 20～60 the degree between.
Facts have proved, in this angular range, the effectively relatively good processing of luminous zone optical effect.Because of LED bright dipping concentration of energy in certain solid angle, the LED primary optical axis is done suitable deflection, mainly be to use, to improve the utilization factor of luminous energy for the luminous energy with led concentrates on light-emitting zone.
As improvement of the technical scheme, described light source light entrance structures thereof has adopted the structure of triangle corner angle.
As described in Figure of description 4, in the structure of the triangle corner angle that light source adopts, a, b, c is three relevant place's sizes, and the scope of a is 200～500 μ m, and the scope of b is 50～300 μ m, and the scope of c is 50～150 μ m.
As improvement of the technical scheme, between light source back and following metal frame, be provided with a heat conduction aluminium block.The design of heat conduction aluminium block utilizes the good heat transfer property of aluminium fully, reduces thermal resistance, thereby reduces the environment temperature around the light source, reduces the infringement of temperature rise to light source and liquid crystal display.Known product does not then have this design when design, heat is distributed by air or plastic body, and radiating effect is very poor.The setting of aluminium block makes full use of existing space, has considered good radiating effect again.
After increasing this heat conduction aluminium block, additional heat scatters and disappears away rapidly by heat conduction aluminium, and heat is greatly reduced the influence of product, has improved reliability of products and serviceable life.
Further improve as technique scheme, available light emitting diode replaces cold-cathode tube as light source, and the mercury content that makes the product light source helps environmental protection from having to nothing, has avoided the restriction of relevant environmental protection act to this production marketing simultaneously all over the world.
Compared with prior art, the present invention has following beneficial effect:
1. light source arrangement of the present invention and light source light entrance structures thereof are special, and along with the minimizing of quantity of light source, power consumption greatly reduces, and has saved the energy.
2. the present invention has additional radiator structure, and additional heat is scattered and disappeared away rapidly by heat conduction aluminium, and heat energy is greatly reduced the influence of product, has improved reliability of products and serviceable life.
3. the present invention replaces cold-cathode tube as light source with light emitting diode, and the mercury content that makes the product light source helps environmental protection from having to nothing.
Description of drawings
Fig. 1 is the light source arrangement synoptic diagram of prior art;
Fig. 2 is a light source arrangement synoptic diagram of the present invention;
Fig. 3 is a light source light entrance structures thereof partial enlarged drawing of the present invention;
Fig. 4 is the size synoptic diagram of light source light entrance structures thereof of the present invention;
Fig. 5 is a radiator structure synoptic diagram of the present invention;
Fig. 6 is that product of the present invention is formed synoptic diagram.
Embodiment
The invention will be further described below in conjunction with Figure of description, but the present invention's scope required for protection is not limited to the scope that embodiment is described.
Fig. 1 is the light source arrangement synoptic diagram of prior art.
As shown in Figure 1: mill run light source arrangement mode is as follows at present: the primary optical axis 2 of light source 1 is 90 degree angles with the horizontal direction of luminous zone 3 or vertical direction.
Fig. 2 is a light source arrangement synoptic diagram of the present invention.
As shown in Figure 2: in big visible area size liquid crystal screen backlight product, comprise light source 1 and luminous zone 2, light source primary optical axis 3 is an angle theta with the level of luminous zone 2, the scope of θ is between 20～60 degree.
As improvement of the technical scheme, described light source light entrance structures thereof has adopted the structure of triangle corner angle.
Fig. 3 is a light source light entrance structures thereof partial enlarged drawing of the present invention;
Fig. 4 is the size synoptic diagram of light source light entrance structures thereof of the present invention.
As shown in Figures 3 and 4, in the structure of the triangle corner angle that light source adopts, a, b, c is three relevant place's sizes, and the scope of a is 200～500 μ m, and the scope of b is 50～300 μ m, and the scope of c is 50～150 μ m.
Fig. 5 is a radiator structure synoptic diagram of the present invention.
As shown in Figure 5, between light source 1 back and following metal frame 3, be provided with a heat conduction aluminium block 4; 2 is light guide plate.
The design of heat conduction aluminium block utilizes the good heat transfer property of aluminium fully, reduces thermal resistance, thereby reduces the environment temperature around the light source 1, reduces the infringement of temperature rise to light source and liquid crystal display.Known product does not then have this design when design, heat is distributed by air or plastic body, and radiating effect is very poor.The setting of heat conduction aluminium block had both made full use of existing space, had considered good radiating effect again.
After increasing this heat conduction aluminium block, additional heat scatters and disappears away rapidly by heat conduction aluminium, and heat energy is greatly reduced the influence of product, has improved reliability of products and serviceable life.
As improvement of the technical scheme, available light emitting diode replaces cold-cathode tube as light source, and the mercury content that makes the product light source helps environmental protection from having to nothing, has avoided the restriction of relevant environmental protection act to this production marketing simultaneously all over the world.
Fig. 6 is that product of the present invention is formed synoptic diagram.
As described in Figure 6: the present invention is successively by last metal frame 1, last bright enhancement film 2, last bright enhancement film 3, last diffusion barrier 4, glue frame 5, light guide plate 6, light source board 8, reflective membrane 9 and down metal frame 10 constitute; Heat conduction aluminium 7 is located between light source board 8 back and the following metal frame 10.
Compared with prior art, the present invention has following beneficial effect:
Light source light entrance structures thereof of the present invention arrange special, and along with the minimizing of quantity of light source, Power consumption greatly reduces, and has saved the energy.
2. the present invention has additional radiator structure, can make additional heat rapid by heat conduction aluminum Scatter and disappear away, heat energy is greatly reduced the impact of product, improved the reliability of product and make Use the life-span.
3. the present invention replaces cold-cathode tube as light source with light emitting diode, makes the product light source Mercury content is conducive to environmental protection from having to nothing.
Claims (5)
1. in, large scale visible area liquid crystal screen backlight product, comprise light source and luminous zone, it is characterized in that: the level of light source primary optical axis and luminous zone is an angle theta, the scope of θ 20～60 the degree between.
2. in according to claim 1, large scale visible area liquid crystal screen backlight product, it is characterized in that: described light source light entrance structures thereof has adopted the structure of triangle corner angle.
3. in according to claim 2, large scale visible area liquid crystal screen backlight product, it is characterized in that: with relevant being of a size of of triangular ridges corner structure of light source: a is 200～500 μ m, and b is 50～300 μ m, and c is 50～150 μ m.
4. in according to claim 3, large scale visible area liquid crystal screen backlight product, it is characterized in that: between light source back and following metal frame, be provided with a heat conduction aluminium block.
According to claim 1 or 2 or 3 or 4 described in, large scale visible area liquid crystal screen backlight product, it is characterized in that: described light source is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100315656A CN101169553A (en) | 2007-11-22 | 2007-11-22 | Mediate, large size visual region liquid crystal screen backlight product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100315656A CN101169553A (en) | 2007-11-22 | 2007-11-22 | Mediate, large size visual region liquid crystal screen backlight product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101169553A true CN101169553A (en) | 2008-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100315656A Pending CN101169553A (en) | 2007-11-22 | 2007-11-22 | Mediate, large size visual region liquid crystal screen backlight product |
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| Country | Link |
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| CN (1) | CN101169553A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2450617A1 (en) * | 2009-07-03 | 2012-05-09 | Sharp Kabushiki Kaisha | Display device |
| CN104879685A (en) * | 2015-05-20 | 2015-09-02 | 深圳市华锐博光电有限公司 | Backlight module and display screen thereof |
-
2007
- 2007-11-22 CN CNA2007100315656A patent/CN101169553A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2450617A1 (en) * | 2009-07-03 | 2012-05-09 | Sharp Kabushiki Kaisha | Display device |
| CN102472437A (en) * | 2009-07-03 | 2012-05-23 | 夏普株式会社 | Display device |
| US8672530B2 (en) | 2009-07-03 | 2014-03-18 | Sharp Kabushiki Kaisha | Display device |
| EP2450617A4 (en) * | 2009-07-03 | 2014-06-18 | Sharp Kk | Display device |
| CN104879685A (en) * | 2015-05-20 | 2015-09-02 | 深圳市华锐博光电有限公司 | Backlight module and display screen thereof |
| CN104879685B (en) * | 2015-05-20 | 2018-08-07 | 深圳市华锐博光电有限公司 | Backlight module and its display screen |
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