CN202927547U - Low-cost mixed LED backlight source - Google Patents
Low-cost mixed LED backlight source Download PDFInfo
- Publication number
- CN202927547U CN202927547U CN 201220569615 CN201220569615U CN202927547U CN 202927547 U CN202927547 U CN 202927547U CN 201220569615 CN201220569615 CN 201220569615 CN 201220569615 U CN201220569615 U CN 201220569615U CN 202927547 U CN202927547 U CN 202927547U
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- reflecting plate
- plate
- low
- liquid crystal
- backlight source
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- Expired - Fee Related
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Abstract
The utility model relates to a low-cost mixed LED (light emitting diode) backlight source which is characterized in that the LED backlight source comprises LED lamp strips (1) and a reflecting plate, wherein the LED lamp strips (1) are mounted on the upper side face and the lower side face of a liquid crystal back plate (2) respectively; the reflecting plate consists of a front reflecting plate (3) and a rear reflecting plate (4); the front reflecting plate (3) is mounted above the liquid crystal back plate (2); the rear reflecting plate (4) is mounted below the liquid crystal back plate (2); therefore, a light cavity is formed between the front reflecting plate (3) and the rear reflecting plate (4). Obviously, with the adoption of the LED backlight source, a light guide plate is left out, the light cavity is hollow, and the cost is obviously lowered.
Description
Technical field
The utility model relates to a kind of low-cost mixed LED backlight source.
Background technology
The LCD Display Technique need to realize Presentation Function by backlight as a kind of non-self luminous Display Technique.Along with the development of lcd technology, the liquid crystal display particularly application of colour liquid crystal display device is also constantly being widened.Pulled by the market of liquid crystal display, the backlight industry also presents a scene of prosperity.The LED-backlit source has great researching value and meaning as a kind of backlight with development potentiality.Simultaneously after the standard of national energy-saving consumption reduction is put into effect, there is obvious competitive advantage in the LED-backlit source aspect power consumption, how better to promote the competitive advantage of LED-backlit source TV, and this patent proposes a kind of low-cost mixed LED backlight source.
The utility model content
The purpose of this utility model is to provide a kind of low-cost mixed LED backlight source, and this backlight has saved LGP, and optical cavity is hollow, and cost has obvious reduction.
A kind of low-cost mixed LED backlight source, its special feature is: be comprised of LED lamp bar and reflecting plate, wherein LED lamp bar is arranged on respectively on upper and lower two sides of liquid crystal backboard, and reflecting plate is comprised of front-reflection plate and back reflection plate, wherein the front-reflection plate is arranged on above liquid crystal backboard, then reflecting plate is arranged on below liquid crystal backboard, thereby forms optical cavity between front-reflection plate and back reflection plate.
Wherein the front-reflection plate is tabular, and then the reflecting plate cross section is the W type.
Its middle section is to be curved surface in the middle of the back reflection plate of W type.
Clearly, adopt LED-backlit of the present utility model source to save LGP, optical cavity is hollow, and cost has obvious reduction.
Description of drawings
Fig. 1 is the scheme of installation of LED lamp bar (1) in the utility model;
Fig. 2 is a kind of structural representation of reflecting plate in the utility model;
Fig. 3 is the another kind of structural representation of reflecting plate in the utility model.
The specific embodiment
As shown in Figure 1, the utility model is a kind of low-cost mixed LED backlight source, formed by LED lamp bar 1 and reflecting plate, wherein LED lamp bar 1 is arranged on respectively on upper and lower two sides of liquid crystal backboard 2, and reflecting plate is comprised of front-reflection plate 3 and back reflection plate 4, wherein front-reflection plate 3 is arranged on liquid crystal backboard 2 tops, and then reflecting plate 4 is arranged on liquid crystal backboard 2 belows, thereby forms optical cavity between front-reflection plate 3 and back reflection plate 4.
As shown in Fig. 2,3, wherein front-reflection plate 3 is tabular, and then reflecting plate 4 cross sections are the W type, is fillet surface or the transition plane for intersecting with the obtuse angle in the middle of the back reflection plate 4 of W type.The plane reflection that namely forms by broken line is respectively completed the collimation of light path, perhaps completes the collimation of light path by camber reflection.Then two of reflecting plate 4 sides all with liquid crystal backboard 2 at an angle, concrete angle value scope control is between the 30-45 degree.
The LED-backlit source is divided into two kinds according to the unusual of light source placement location, and a kind of is side light type LED backlight source, and a kind of is low-cost mixed LED backlight source.It is thin that the characteristics of side light type LED backlight source are that backlight can be done, and cost is low, but brightness uniformity is poor.The characteristics in low-cost mixed LED backlight source are that brightness uniformity is good, but that backlight can not be done is thin, and cost is high.
The utility model provides a kind of low-cost mixed LED backlight source, there are two outstanding characteristics in this low cost mixed LED backlight source, characteristics are that cost is low, LGP has been saved in this LED-backlit source compared to the LED-backlit source of side-light type, another characteristics are that the bottom surface of the back reflection plate 4 of this backlight is irregular, and what can be both that the plane forms can be also that curved surface forms.
Claims (3)
1. low-cost mixed LED backlight source, it is characterized in that: formed by LED lamp bar (1) and reflecting plate, wherein LED lamp bar (1) is arranged on respectively on upper and lower two sides of liquid crystal backboard (2), and reflecting plate is comprised of front-reflection plate (3) and back reflection plate (4), wherein front-reflection plate (3) is arranged on above liquid crystal backboard (2), then reflecting plate (4) is arranged on below liquid crystal backboard (2), thereby forms optical cavity between front-reflection plate (3) and back reflection plate (4).
2. a kind of low-cost mixed LED backlight as claimed in claim 1 source, it is characterized in that: wherein front-reflection plate (3) is tabular, and then reflecting plate (4) cross section is the W type.
3. a kind of low-cost mixed LED backlight as claimed in claim 2 source is characterized in that: its middle section is to be curved surface in the middle of the back reflection plate (4) of W type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569615 CN202927547U (en) | 2012-10-31 | 2012-10-31 | Low-cost mixed LED backlight source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569615 CN202927547U (en) | 2012-10-31 | 2012-10-31 | Low-cost mixed LED backlight source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927547U true CN202927547U (en) | 2013-05-08 |
Family
ID=48217506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569615 Expired - Fee Related CN202927547U (en) | 2012-10-31 | 2012-10-31 | Low-cost mixed LED backlight source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927547U (en) |
-
2012
- 2012-10-31 CN CN 201220569615 patent/CN202927547U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |