CN103196078B - Light-emitting diode (LED) backlight module - Google Patents
Light-emitting diode (LED) backlight module Download PDFInfo
- Publication number
- CN103196078B CN103196078B CN201310098545.6A CN201310098545A CN103196078B CN 103196078 B CN103196078 B CN 103196078B CN 201310098545 A CN201310098545 A CN 201310098545A CN 103196078 B CN103196078 B CN 103196078B
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- Prior art keywords
- led
- base
- led base
- arc
- light
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- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000001788 irregular Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Abstract
The invention provides a light-emitting diode (LED) backlight module which comprises at least one back plate and a plurality of backlight modules. The backlight modules comprise a plurality of LED bases and a plurality of LEDs arranged on every LED base. Every LED base is provided with at least three arc-shaped side faces, and the LEDs are arranged at the position of the center of the side edge of every side face. By enabling the side faces of the LED bases to be arc-shaped and enabling the LEDs to be arranged at the position of the center of the side edge of every side face, the side light LEDs are formed, a travel path direction of a light source projected out through the LEDs is converted through the arc-shaped surfaces of the side faces of the LED bases so that a surface light source is formed, the light utilization rate can be improved, used quantity of the required LEDs is reduced, and the used quantity and cost of the LEDs of the backlight module are reduced.
Description
Technical field
The present invention relates to a kind of LED-backlit module.
Background technology
Figure 1 shows that the structural representation of existing direct-light type LED backlight module, backlight module 1 comprises usually: the chase 10 be fastened togather and glue frame 20, optical diaphragm group 30, diffuser plate 40, LED circuit board 50 and backboard 60, LED circuit board 50 is made up of light emitting diode (LED) 51 and printed circuit board (PCB) (PCB/PWB) 52, the light source that LED-backlit module is sent by light emitting diode in LED circuit board 50, by diffuser plate 40 and optical mode pack 30 for liquid crystal panel provides required light source.
Figure 2 shows that the generalized section of direct-light type LED backlight module, in direct-light type LED backlight module, diffuser plate 40 need use diffuser plate thimble to support 70, avoids diffuser plate 40 sagging.
General direct-light type LED backlight module design, if when the distance between LED (Pitch) is excessive, will cause occurring dark space between LED, and the exiting surface of diffuser plate will produce the optical grade bad phenomenon of light and shade inequality (i.e. HotSpot phenomenon); Although the distance reduced between LED can improve the problems referred to above, therefore LED the number that backlight module uses can increase, and causes the cost of backlight module to improve; Therefore the countermeasure proposing to solve this above problem is the problem of research at present.
Although increase LED can reach identical motion object with the distance between diffuser plate, also cause module thickness to increase simultaneously; In addition, the blooming piece correspondence increasing LED number or replacing high price also can reach identical motion object, but such scheme all can cause backlight module cost to increase.
Summary of the invention
The present invention relates to a kind of shape by arranging LED susceptor surface to change the LED-backlit module in LED light source conduct direction, so can improve the utilization rate of light, and then reduce usage quantity needed for LED, the LED reducing backlight module uses a number and cost.
The invention provides a kind of LED-backlit module, comprise: at least one backboard and some backlight modules, the plural LED that described backlight module comprises plural LED base and is arranged on each LED base, described each LED base is provided with at least three arcuate flanks, and LED is arranged at the center of the side of each side.
Wherein, the end points of each side of described LED base is arc to the line at LED base center, and the end points of each side is the minimum point of arc, and LED base center is the peak of arc.
The present invention is by being arranged to arc shape by the side of LED base, LED is arranged at the center of the side of each side, so just form side view LED, the light source that LED projects, by the conduct direction of the side arc shape surface transformation light source of LED base, forming surface light source, so can improve the utilization rate of light, and then reducing usage quantity needed for LED, the LED reducing backlight module uses a number and cost.
Accompanying drawing explanation
Figure 1 shows that the structural representation of existing direct-light type LED backlight module;
Figure 2 shows that the generalized section of the module of LED-backlit shown in Fig. 1
Figure 3 shows that the structural representation of the LED base of backlight module of the present invention;
Figure 4 shows that the top view of the LED base shown in Fig. 3;
Figure 5 shows that the three-dimensional cutaway view of Fig. 4 in A-A direction;
Figure 6 shows that the sectional view of Fig. 4 in A-A direction;
Figure 7 shows that the sectional view of Fig. 4 in B-B direction;
Figure 8 shows that the structural representation of the LED base shown in Fig. 3 and LED combination;
Figure 9 shows that the top view of the LED base shown in Fig. 7 and LED combination;
Figure 10 shows that the sectional view of Fig. 9 in A-A direction;
Figure 11 shows that the sectional view of Fig. 9 in B-B direction;
Figure 12 shows that backlight module top view of the present invention;
Figure 13 shows that the structural representation of pentagonal LED base and LED combination;
Figure 14 shows that the LED base of triangle and the structural representation of LED combination.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Existing band reflection seat LED(Top View Led), LED is arranged at the centre of surface of bracket base, and the light-emitting area of LED and bracket base (bracket base is also referred to as solder side) are in opposition side (namely in 180 degree); Side view LED (Side View Led), LED is arranged at bracket base side center, and the light-emitting area of LED is vertical with bracket base (bracket base is also referred to as solder side) (namely in 90 degree).
The present invention relates to a kind of LED-backlit module, the present invention puts the structure being to change diffuser plate thimble unlike the prior art, be illustrated in figure 3 the structural representation of LED base of the present invention, the present invention, by LED being arranged at the side center of LED base, forms side view LED.
If Fig. 3 is to the structural representation that Figure 7 shows that LED base, in the present embodiment, the base of LED base 10 is the circular arc of quadrangle, intermediate projections shape, the end points of each side of LED base 10 is arc to the line at LED base center, and the end points of each side is the minimum point of arc, LED base center is the peak of arc.
LED base 10 has four arcuate flanks, and LED base 10 is all arc-shaped in X-direction and Y-direction, and it comprises the cambered surface 11 of four arc-shapeds and is positioned at the center of these four cambered surfaces 11.This LED base 10 is manufactured by plastic ejection moulding, and its backing material is high reflectance plastics, and this LED base 10 is that integral type is shaping, also can be combined by two cambered surfaces or four cambered surfaces.
Fig. 5 and Fig. 6 is the sectional view of Fig. 4 at A-A direction (horizontal direction), is found out by Fig. 4 and Fig. 5, and the side of this LED base 10 is arc-shaped; Fig. 7 is the sectional view of Fig. 4 in B-B direction (vertical direction), is found out by Fig. 4 and Fig. 6, and another side of this LED base 10 is also in arc-shaped.
Fig. 8 is to Figure 11 shows that LED is assembled in the structural representation of LED base, LED20 is arranged at the center of the side of corresponding LED base 10 side, four side centers of each LED base 10 assemble a LED20, that is: 4 LED20 are assembled on a LED base 10, form side view LED (Side View Led) light source module like this.
Figure 10 is the sectional view of Fig. 9 at A-A direction (horizontal direction), Figure 11 is the sectional view of Fig. 9 in B-B direction (vertical direction), according to Figure 11 and Figure 11, the light source that side view LED projects, by the conduct direction of the arc-shaped surface transformation light source by LED base material 10, forming surface light source, such mode can improve the utilization rate of light, and then reduce usage quantity needed for LED, compared with general direct-light type LED backlight module, can significantly reduce module integral thickness; And LED base 10 also can replace the diffuser plate thimble of general direct-light type LED backlight module.
Be backlight module top view as shown in figure 12, LED base 10 of the present invention and four side view LEDs 20 form a light source module, form a straight-down negative region by a plurality of light source module again and control light LED-backlit module, in backlight module of the present invention, the required quantity used of light source module, design size size according to light source module and backlight module determined, therefore can be determined from Row sum-equal matrix by designer.
The LED base of above-described embodiment is foursquare arc shape; but the present invention's protection is not only confined to the square of corner; also can be the arbitrary polygons such as rectangle, rectangle, pentagon (as shown in figure 13), triangle (as shown in figure 14); side view LED still corresponds to the center of arbitrary polygon LED chassis side; plural number corner LED base a plurality of side view LED of arranging in pairs or groups forms a light source module, then forms a straight-down negative region by a plurality of light source module and control light LED-backlit module.
The present invention is by being arranged to arc shape by the side of LED base, LED is arranged at the center of the side of each side, so just form side view LED, the light source that LED projects, by the conduct direction of the side arc shape surface transformation light source of LED base, forming surface light source, so can improve the utilization rate of light, and then reducing usage quantity needed for LED, the LED reducing backlight module uses a number and cost.
Claims (8)
1. a LED-backlit module, comprise: at least one backboard and some backlight modules, it is characterized in that: the plural LED that described LED-backlit module comprises plural LED base and is arranged on each LED base, described each LED base is provided with at least three arcuate flanks, and LED is arranged at the center of the side of each side;
The end points of each side of described LED base is arc to the line at LED base center, and the end points of each side is the minimum point of arc, LED base center is the peak of arc, by the conduct direction of the side arc shape surface transformation light source of LED base, and forming surface light source.
2. LED-backlit module according to claim 1, is characterized in that: at least three described arcuate flanks are integrated.
3. LED-backlit module according to claim 1, is characterized in that: at least three described arcuate flanks combine.
4. the LED-backlit module according to claim 1 or 2 or 3, is characterized in that: each LED base is provided with four arcuate flanks, and the bottom surface of this LED base is square.
5. the LED-backlit module according to claim 1 or 2 or 3, is characterized in that: each LED base is provided with four arcuate flanks, and the bottom surface of this LED base is rectangle.
6. the LED-backlit module according to claim 1 or 2 or 3, is characterized in that: each LED base is provided with four arcuate flanks, and the bottom surface of this LED base is irregular formation.
7. the LED-backlit module according to claim 1 or 2 or 3, is characterized in that: each LED base is provided with five arcuate flanks, and the bottom surface of this LED base is pentagon.
8. LED-backlit module according to claim 1, is characterized in that: described LED base is by plastic ejection moulding, and its backing material is high reflectance plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098545.6A CN103196078B (en) | 2013-03-25 | 2013-03-25 | Light-emitting diode (LED) backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310098545.6A CN103196078B (en) | 2013-03-25 | 2013-03-25 | Light-emitting diode (LED) backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103196078A CN103196078A (en) | 2013-07-10 |
| CN103196078B true CN103196078B (en) | 2015-06-10 |
Family
ID=48718800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310098545.6A Expired - Fee Related CN103196078B (en) | 2013-03-25 | 2013-03-25 | Light-emitting diode (LED) backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103196078B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI364557B (en) * | 2008-05-02 | 2012-05-21 | Chimei Innolux Corp | Light source and backlight module and liquid crystal display device using same |
| WO2011158555A1 (en) * | 2010-06-15 | 2011-12-22 | シャープ株式会社 | Lighting device, display device, and television reception device |
| CN201866691U (en) * | 2010-09-21 | 2011-06-15 | 丰铁流 | Backlight source of spliced LED (Light Emitting Diode) mesh matrix plate backlight source |
| US8235540B2 (en) * | 2011-01-14 | 2012-08-07 | Lg Innotek Co., Ltd. | Backlight unit and display apparatus using the same |
| CN202432359U (en) * | 2011-12-27 | 2012-09-12 | Tcl光电科技(惠州)有限公司 | Liquid crystal display (LCD) backlight module and liquid crystal display module |
-
2013
- 2013-03-25 CN CN201310098545.6A patent/CN103196078B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103196078A (en) | 2013-07-10 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 |
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| CF01 | Termination of patent right due to non-payment of annual fee |