CN103047586A - LED (Light-Emitting Diode) backlight module and liquid crystal television - Google Patents
LED (Light-Emitting Diode) backlight module and liquid crystal television Download PDFInfo
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- CN103047586A CN103047586A CN201210557969XA CN201210557969A CN103047586A CN 103047586 A CN103047586 A CN 103047586A CN 201210557969X A CN201210557969X A CN 201210557969XA CN 201210557969 A CN201210557969 A CN 201210557969A CN 103047586 A CN103047586 A CN 103047586A
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Abstract
The invention discloses an LED (Light-Emitting Diode) backlight module and a liquid crystal television. The LED backlight module comprises a module middle frame, a reflecting sheet and an LED light-emitting source, wherein the reflecting sheet is made into a trumpet shape; the LED light-emitting source is arranged at the bottom of the trumpet-shaped reflecting sheet; and the module middle frame is arranged at the opening part of the trumpet-shaped reflecting sheet. The light intensity of an LED backlight source is homogenized through the adoption of the trumpet-shaped reflecting sheet having the structure similar to a CRT (Cathode Ray Tube) and the application of a diffuse reflection principle, so that a light guide plate is economized, the cost of the LED backlight module is lowered, working procedures of the production line and labor cost are also reduced, and damage to the environment is avoided.
Description
Technical field
The present invention relates to the LED-backlit module field in the LCD TV, in particular a kind of do not have LGP, a ultralow LED-backlit module of cost.
Background technology
Along with sharply rising violently of Chinese LED LCD TV demand, the development of LED-backlit module field is swift and violent, considers that from the angle of energy-saving and environmental protection, Ultra Low Cost the light inlet mode of side entering-type LED backlight module changes into one-sided or the bilateral light inlet by four side light inlets gradually.And at present because the LED LCD TV is faced with huge cost pressure, the cost that how to reduce preferably the LED-backlit module becomes the target that industry is mainly challenged.
At present, the LED-backlit module of bilateral light inlet mode is all realized by LGP basically, as shown in Figure 1, Fig. 1 is the operation principle schematic diagram of prior art LED-backlit module, LED light emitting source 120 is arranged on the both sides of LGP LGP 110, when the light that LED light emitting source 120 sends is injected LGP 110 within it section produce total reflection, produce scattering during site 111 on running into LGP 110, thus so that light is able to transmit and evenly distribute from LGP 110.
But having adopted to have increased the cost of LED-backlit module undoubtedly with the finely dispersed LGP 120 of the luminous flux of LED light emitting source 120, also so that the LED-backlit module is limited by the development trend of LGP 110, has increased operation and the cost of labor of producing the line operation; In addition, site 111 on the existing LGP 110 or for printing or be radium-shine, base station and raw material all will drop into a large amount of capitals, and also easily environment are produced harm for MMA (methyl methacrylate) particle of making LGP 110 in process.
Therefore, prior art still haves much room for improvement and develops.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of LED-backlit module, cost is low.
Simultaneously, the present invention also provides a kind of LCD TV, and the cost of its used part backlight is low.
Technical scheme of the present invention is as follows: a kind of LED-backlit module, comprise module center, reflector plate and LED light emitting source, wherein: described reflector plate is made into the shape of loudspeaker, and described LED light emitting source is arranged on the bottom of horn-like reflector plate, and described module center is arranged on the oral area of horn-like reflector plate.
Described LED-backlit module, wherein: the outline line of the loudspeaker wall of horn-like reflector plate on the longitudinal cross-section of vertical described LED light emitting source light-emitting area is linearly.
Described LED-backlit module, wherein: the angle between the linearly loudspeaker wall outline line in described LED light emitting source both sides is acute angle.
Described LED-backlit module, wherein: described LED light emitting source is arranged on the bottom of horn-like reflector plate with the COB packaged type.
A kind of LCD TV comprises liquid crystal panel and is arranged on the backlight module at this liquid crystal panel back side, it is characterized in that: described backlight module be above-mentioned in each described LED-backlit module.
A kind of LED-backlit module provided by the present invention and LCD TV, owing to adopted trumpet-shaped reflector plate, use the diffuse reflection principle and saved thus LGP in conjunction with the reflector plate of similar CRT structure is next so that the light intensity in LED-backlit source is able to homogenising, reduced the cost of LED-backlit module; And reduced operation and the cost of labor of producing the line operation, avoided the harm that environment is caused.
Description of drawings
Fig. 1 is the operation principle schematic diagram of prior art LED-backlit module.
Fig. 2 is the operation principle schematic diagram of LED-backlit module of the present invention.
The specific embodiment
Below with reference to accompanying drawing, the specific embodiment of the present invention and embodiment are described in detail, described specific embodiment is not for limiting the specific embodiment of the present invention only in order to explain the present invention.
As shown in Figure 2, Fig. 2 is the operation principle schematic diagram of LED-backlit module of the present invention, this LED-backlit module comprises module center 230, reflector plate 210 and LED light emitting source 220, wherein, described reflector plate 210 is made into similar CRT (Cathode Ray Tube, cathode-ray tube) horn shape of structure, described LED light emitting source 220 is arranged on the bottom of horn-like reflector plate 210, described module center 230 is arranged on the oral area of horn-like reflector plate 210, use the diffuse reflection principle in conjunction with the reflector plate 210 of similar CRT structure so that the light intensity in LED-backlit source 220 is able to homogenising, saved thus and accounted for the higher LGP of LED-backlit module cost, MMA (methyl methacrylate) material of having avoided simultaneously the use meeting that environment is worked the mischief does not need to be dropped on the LGP equipment of printing or radium-shine site yet.
In the preferred embodiment of LED-backlit module of the present invention, the outline line of the loudspeaker wall of horn-like reflector plate 210 on the longitudinal cross-section of vertical described LED light emitting source 220 light-emitting areas can be linearly, can reduce thus the order of reflection of light, improves reflection efficiency.
Further, the angle between the linearly loudspeaker wall outline line in described LED light emitting source 220 both sides is acute angle, can improve thus the reflection efficiency of horn-like reflector plate 210; And the reflector plate 210 of this shape lighting angle that LED light emitting source 220 is emitted beam has the shape of similar flashlight irradiation, avoided thus the excessive so that light large tracts of land of lighting angle to converge on the reflector plate and causes looking the defective that has the round endless belt on the effect.
In addition, because LCD TV needs the LED-backlit module that very high brightness is provided, so the power of LED light emitting source 220 is often all very large, the heat radiation of described LED light emitting source 220 also is technological difficulties thus.Traditional way normally combines by heat-conducting glue packaged LED lamp with fin, but such radiating mode is to being applicable to lower powered LED lamp.
For this reason, the used LED light emitting source 220 of LED-backlit module of the present invention can encapsulate (chip On board by COB, exactly bare chip is sticked on the interconnect substrates with conduction or non-conductive adhesive, then carry out Bonding and realize its electrical connection) mode is set directly at the bottom of horn-like reflector plate 210, that is to say, directly led chip is encapsulated on the reflector plate 210 as fin in the COB mode, greatly improve thus the radiating efficiency of described LED light emitting source 220, thereby increased service life and the light efficiency of described LED light emitting source.
Concrete, the inner surface of described reflector plate 210 is provided with the highly reflective material layer, light is after high-power described LED light emitting source 220 sends, part light is directly worn from module center 230 surfaces and is penetrated, part light can pass after the reflection via the highly reflective material layer, by the degree of depth of control module center 230 surfaces to LED light emitting source 220 surfaces, and by controlling the lighting angle of LED light emitting source 220, jointly reach the purpose that makes LED-backlit module surface brightness homogenising.
Based on above-mentioned LED-backlit module, the invention allows for a kind of LCD TV, comprise liquid crystal panel and the backlight module that is arranged on this liquid crystal panel back side, wherein: described backlight module can adopt each described LED-backlit module in above-described embodiment, to reduce the complete machine cost pressure.
Should be understood that; the above only is preferred embodiment of the present invention; be not sufficient to limit technical scheme of the present invention; for those of ordinary skills; within the spirit and principles in the present invention; can be increased and decreased according to the above description, replacement, conversion or improvement, and all these increases and decreases, replacement, conversion or improve after technical scheme, all should belong to the protection domain of claims of the present invention.
Claims (5)
1. LED-backlit module, comprise module center, reflector plate and LED light emitting source, it is characterized in that: described reflector plate is made into the shape of loudspeaker, and described LED light emitting source is arranged on the bottom of horn-like reflector plate, and described module center is arranged on the oral area of horn-like reflector plate.
2. LED-backlit module according to claim 1, it is characterized in that: the outline line of the loudspeaker wall of horn-like reflector plate on the longitudinal cross-section of vertical described LED light emitting source light-emitting area is linearly.
3. LED-backlit module according to claim 2 is characterized in that: the angle between the linearly loudspeaker wall outline line in described LED light emitting source both sides is acute angle.
4. LED-backlit module according to claim 1, it is characterized in that: described LED light emitting source is arranged on the bottom of horn-like reflector plate with the COB packaged type.
5. a LCD TV comprises liquid crystal panel and the backlight module that is arranged on this liquid crystal panel back side, and it is characterized in that: described backlight module is each described LED-backlit module in the claim 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210557969XA CN103047586A (en) | 2012-12-20 | 2012-12-20 | LED (Light-Emitting Diode) backlight module and liquid crystal television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210557969XA CN103047586A (en) | 2012-12-20 | 2012-12-20 | LED (Light-Emitting Diode) backlight module and liquid crystal television |
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| Publication Number | Publication Date |
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| CN103047586A true CN103047586A (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210557969XA Pending CN103047586A (en) | 2012-12-20 | 2012-12-20 | LED (Light-Emitting Diode) backlight module and liquid crystal television |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759499A (en) * | 2016-03-10 | 2016-07-13 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106292064A (en) * | 2016-08-29 | 2017-01-04 | 合肥惠科金扬科技有限公司 | A kind of LCD screen backlight occlusion method |
Citations (6)
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| GB702125A (en) * | 1949-07-07 | 1954-01-06 | Roger Lannes De Montebello | Means for producing true appearance of solid objects from plane pictures thereof |
| GB1411199A (en) * | 1973-02-16 | 1975-10-22 | Hewlett Packard Co | Electroluminescent semiconductor apparatus and method of fabricating the same |
| CN1690802A (en) * | 2004-04-19 | 2005-11-02 | 住友橡胶工业株式会社 | Lighting device, lamp for liquid crystal display device and liquid crystal display device |
| US20060092662A1 (en) * | 2004-11-03 | 2006-05-04 | Noh Ji-Whan | Backlight unit and liquid crystal display employing the same |
| CN200949764Y (en) * | 2006-06-14 | 2007-09-19 | 南京汉德森科技股份有限公司 | Large power LED lamp box illuminating source die set |
| CN201269486Y (en) * | 2008-10-30 | 2009-07-08 | 王洪武 | High-power LED yellow spot removing ring |
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2012
- 2012-12-20 CN CN201210557969XA patent/CN103047586A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB702125A (en) * | 1949-07-07 | 1954-01-06 | Roger Lannes De Montebello | Means for producing true appearance of solid objects from plane pictures thereof |
| GB1411199A (en) * | 1973-02-16 | 1975-10-22 | Hewlett Packard Co | Electroluminescent semiconductor apparatus and method of fabricating the same |
| CN1690802A (en) * | 2004-04-19 | 2005-11-02 | 住友橡胶工业株式会社 | Lighting device, lamp for liquid crystal display device and liquid crystal display device |
| US20060092662A1 (en) * | 2004-11-03 | 2006-05-04 | Noh Ji-Whan | Backlight unit and liquid crystal display employing the same |
| CN200949764Y (en) * | 2006-06-14 | 2007-09-19 | 南京汉德森科技股份有限公司 | Large power LED lamp box illuminating source die set |
| CN201269486Y (en) * | 2008-10-30 | 2009-07-08 | 王洪武 | High-power LED yellow spot removing ring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759499A (en) * | 2016-03-10 | 2016-07-13 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| WO2017152435A1 (en) * | 2016-03-10 | 2017-09-14 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| US9964802B2 (en) | 2016-03-10 | 2018-05-08 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Backlight modules and liquid crystal devices |
| CN106292064A (en) * | 2016-08-29 | 2017-01-04 | 合肥惠科金扬科技有限公司 | A kind of LCD screen backlight occlusion method |
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Application publication date: 20130417 |
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