CN2634501Y - Color changing and film changing type sub white LED back light source - Google Patents
Color changing and film changing type sub white LED back light source Download PDFInfo
- Publication number
- CN2634501Y CN2634501Y CN 03266238 CN03266238U CN2634501Y CN 2634501 Y CN2634501 Y CN 2634501Y CN 03266238 CN03266238 CN 03266238 CN 03266238 U CN03266238 U CN 03266238U CN 2634501 Y CN2634501 Y CN 2634501Y
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- China
- Prior art keywords
- guide plate
- light guide
- backlight
- light source
- blue led
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- 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.)
- Expired - Lifetime
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- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- 238000002845 discoloration Methods 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 claims description 4
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 6
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XOMKZKJEJBZBJJ-UHFFFAOYSA-N 1,2-dichloro-3-phenylbenzene Chemical compound ClC1=CC=CC(C=2C=CC=CC=2)=C1Cl XOMKZKJEJBZBJJ-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
A color transformation film semi-white LED backlight source relates to a backlight which can provide semi-white lighting illumination for the LCD display, comprising a superright blue LED light source, an efficient light guiding plate with light guiding rate more than 90 percent and a PCB printed plate; the superlight blue LED light source is arranged on the side of the efficient light guiding plate; the PCB printed plate is arranged on the outer side of the LED backlight source. The utility model is characterized in that a color transformation film with special color transformation function is arranged; the using brightness change rate of the color transformation film is less than 5 percent; the surface of the light guiding plate has concave-convex points or concave-convex grooves made through laser rags, processing rags, printed strips or injection strips. The blue light emitted from the super-bright blue LED light source, under the color transformation action of the specially treated color transformation film can generate extraordinarily stable semi-white source with lower attenuation rate, and develop a new method to get the semi-white light source.
Description
Technical field
The utility model relates to a kind of backlight, is specifically related to a kind of backlight that inferior white illumination light source can be provided for the LCD LCD.
Background technology
Generally, the LED lamp manufacture craft of white backlight source employing is: the blue led chip reaches directly puts yellow fluorescent powder on the blue led chip.Because LED the time has the heating phenomenon in work, can make LED improve 10～20 ℃ of temperature, this phenomenon has been accelerated the rate of decay of yellow fluorescent powder of White LED and photochromic stability, finally causes white backlight source change color and accelerates to lose efficacy.
The utility model content
In order to overcome the defective that existing LED lamp color relax is fast, the life-span is short, the utility model provides a kind of Color Transform Membrane-Type Sub-White LED Backlight Source, this backlight is except the characteristics that possess conventional LED white backlight source, also introduced the complex art of synthetic and variable color, its LED lamp temperature rise can reduce 50%～80%, the speed of its decay and photochromic stability can improve greatly, thereby can improve the mission life-span of backlight and photochromic quality.
In order to reach this purpose, the utility model provides following technical scheme: a kind of Color Transform Membrane-Type Sub-White LED Backlight Source, it comprises the blue led light source of superbright, the efficient light guide plate of monolithic devices of light-conductive rate 〉=90% and the PCB printed panel of backlight, superbright blue led light source is positioned at efficient light guide plate side, the PCB printed panel is positioned at the superbright blue led light source outside and is connected therewith, this backlight also is provided with the color conversion film with special discoloration, and color conversion film is arranged between superbright blue led light source and the efficient light guide plate.
Described light guide plate is combined light guide plate, and combined light guide plate is made up of reflection shell and the light guide plate that is embedded in the reflection shell, and light guide plate is embedded in the reflection shell of combined light guide plate.
Described color conversion film is arranged on the front of efficient light guide plate.
The front of described efficient light guide plate is provided with the diffusion barrier that is used to improve visual effect.
The side that the bottom surface of described efficient light guide plate and other are not provided with led light source is provided with the reflective membrane that is used for anti-light leak.
The blue led light source of described superbright is the chip of the blue led of superbright.
The blue led light source of described superbright is the superbright blue led encapsulation lamp through toning,
The blue led light source of described superbright can be placed on a side of light guide plate, two sides or any side.
Described light guide plate upper surface has adopted the laser rag, has processed rag, has been printed as line or has been injection molded into line, and the shape of line can be the sags and crests or the tongue and groove of arbitrary shape.The utility model mainly has the following advantages: this Color Transform Membrane-Type Sub-White LED Backlight Source has used color conversion film, combine superbright blue led light source and color conversion film technology, can make the former light source that changes inferior white for blue led light source into, has the long-life, the effect of colour stable, for the required white backlight source of LCD LCD provides a new approach and more wide usage space, the briliancy slip of color conversion film is lower than 5%, wavelength coverage is the blue led of 450nm～470nm, the chromaticity coordinate scope of the backlight after the look conversion (pressing CIE1931 international standard chromaticity coordinate) X=0.17～0.25, the inferior white in Y=0.17～0.25.The color conversion film of released state can be worked having under the isolation with LED, and its temperature rise can reduce 50%～80%, so the speed of its decay and photochromic stability can improve greatly, thereby has improved the mission life-span of backlight and photochromic quality.
Description of drawings
Fig. 1 is first embodiment of the present utility model, is the typical structure synoptic diagram of backlight.
Fig. 2 is the utility model backlight principle of work synoptic diagram.
Fig. 3 is second embodiment of the present utility model, and the backlight color conversion film is positioned over the structural representation in light guide plate front.
Fig. 4 is the 3rd embodiment of the present utility model, and the backlight light guide plate is the structural representation of combined light guide plate.
Embodiment
Fig. 1 is first embodiment of the present utility model, also reach the typical structure synoptic diagram of backlight, this Color Transform Membrane-Type Sub-White LED Backlight Source, it comprises the blue led light source 3 of superbright, the PCB printed panel 5 of efficient light guide plate 2 of the monolithic devices of light-conductive rate 〉=90% and backlight, superbright blue led light source 3 is positioned at efficient light guide plate 2 sides, PCB printed panel 5 is positioned at superbright blue led light source 3 outsides and is connected therewith, this backlight also is provided with the color conversion film 4 with special discoloration, color conversion film 4 is arranged between superbright blue led light source 3 and the efficient light guide plate 2, the front of efficient light guide plate 2 is provided with the diffusion barrier 1 that is used to improve visual effect, and the bottom surface of efficient light guide plate 2 and other side that led light source 3 is not set are provided with the reflective membrane 6 that is used for anti-light leak.
Fig. 3 is second embodiment of the present utility model, its color conversion film 4 is arranged on the front of efficient light guide plate 2, this Color Transform Membrane-Type Sub-White LED Backlight Source, it comprises the blue led light source 3 of superbright, the PCB printed panel 5 of efficient light guide plate 2 of the monolithic devices of light-conductive rate 〉=90% and backlight, superbright blue led light source 3 is positioned at efficient light guide plate 2 sides, PCB printed panel 5 is positioned at superbright blue led light source 3 outsides and is connected therewith, this backlight also is provided with the color conversion film 4 with special discoloration, and the bottom surface of efficient light guide plate 2 and other side that led light source 3 is not set are provided with the reflective membrane 6 that is used for anti-light leak.
Fig. 4 is the 3rd embodiment of the present utility model, light guide plate 2 is combined light guide plate, combined light guide plate is made up of reflection shell 7 and the light guide plate 2 that is embedded in the reflection shell 7, light guide plate 2 is embedded in the reflection shell 7 of combined light guide plate, this Color Transform Membrane-Type Sub-White LED Backlight Source, it comprises the blue led light source 3 of superbright, the PCB printed panel 5 of combined high-efficiency light guide plate 2 and backlight, superbright blue led light source 3 is positioned at efficient light guide plate 2 sides, PCB printed panel 5 is positioned at superbright blue led light source 3 outsides and is connected therewith, this backlight also is provided with the color conversion film 4 with special discoloration, color conversion film 4 is arranged between superbright blue led light source 3 and the efficient light guide plate 2, and the front of efficient light guide plate 2 is provided with the diffusion barrier 1 that is used to improve visual effect.
The blue led light source of superbright can be the chip or the superbright blue led encapsulation lamp through mixing colours of the blue led of superbright; the blue led light source of superbright can be placed on a side of light guide plate, two sides or any side; the light guide plate upper surface has adopted the laser rag, has processed rag, has been printed as line or has been injection molded into line; the shape of line can be the sags and crests or the tongue and groove of arbitrary shape, and all these design proposals all should be within protection domain of the present utility model.
Below look conversion principle of the present utility model is described.
As shown in Figure 2, the main composition of the utility model backlight partly is a diffusion barrier 1, light guide plate 2, color conversion film 4, superbright blue led 3, printed panel PCB 5, reflective membrane 6, superbright blue led 3 is placed on side of solid that light guide plate 2 forms, two sides or all sides, color conversion film 4 is placed between superbright blue led 3 and the light guide plate 2, the light that LED sends is when seeing through color conversion film 4, transform layer conversion by color conversion film 4, making original wavelength is that to change into the chromaticity coordinate scope be X=0.18～0.25 for the superbright blue LED light of 450nm～470nm, the inferior white light of Y=0.18～0.25, inject from the side of light guide plate 2 again, refraction through the tongue and groove or the point at light guide plate 2 back sides, the reflection of reflective membrane 6, make the light that is parallel to light guide plate 2 originally change direction, penetrate from the front of light guide plate 2, through the diffusion of diffusion barrier 1, form soft again, even backlight.
Light guide plate, its light-conductive rate 〉=90%, diffusion barrier, the light that can be come out in the backlight front spreads more evenly, and is softer, and the reflective membrane that backlight relates to plays the effect of reflecting and preventing light leak.
Claims (9)
1. Color Transform Membrane-Type Sub-White LED Backlight Source, it comprises the blue led light source of superbright, the efficient light guide plate of monolithic devices of light-conductive rate 〉=90% and the PCB printed panel of backlight, superbright blue led light source is positioned at efficient light guide plate side, the PCB printed panel is positioned at the superbright blue led light source outside and is connected therewith, it is characterized in that: this backlight also is provided with the color conversion film with special discoloration, and color conversion film is arranged between superbright blue led light source and the efficient light guide plate.
2. backlight as claimed in claim 1 is characterized in that: described light guide plate is combined light guide plate, and combined light guide plate is made up of reflection shell and the light guide plate that is embedded in the reflection shell, and light guide plate is embedded in the reflection shell of combined light guide plate.
3. backlight as claimed in claim 1 or 2 is characterized in that: described color conversion film is arranged on the front of efficient light guide plate.
4. backlight as claimed in claim 1 is characterized in that: the front of described efficient light guide plate is provided with the diffusion barrier that is used to improve visual effect.
5. backlight as claimed in claim 4 is characterized in that: the side that the bottom surface of described efficient light guide plate and other are not provided with led light source is provided with the reflective membrane that is used for anti-light leak.
6. backlight as claimed in claim 1 is characterized in that: the blue led light source of described superbright is the chip of the blue led of superbright.
7. backlight as claimed in claim 1 is characterized in that: the blue led light source of described superbright is the superbright blue led encapsulation lamp through toning,
8. backlight as claimed in claim 1 or 2 is characterized in that: the blue led light source of described superbright can be placed on a side of light guide plate, two sides or any side.
9. backlight as claimed in claim 1 or 2 is characterized in that: described light guide plate upper surface has adopted the laser rag, has processed rag, has been printed as line or has been injection molded into line, and the shape of line can be the sags and crests or the tongue and groove of arbitrary shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266238 CN2634501Y (en) | 2003-06-27 | 2003-06-27 | Color changing and film changing type sub white LED back light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266238 CN2634501Y (en) | 2003-06-27 | 2003-06-27 | Color changing and film changing type sub white LED back light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2634501Y true CN2634501Y (en) | 2004-08-18 |
Family
ID=34298153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03266238 Expired - Lifetime CN2634501Y (en) | 2003-06-27 | 2003-06-27 | Color changing and film changing type sub white LED back light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2634501Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296580B (en) * | 2007-04-23 | 2011-05-18 | 三星电机株式会社 | Printed circuit board, method of manufacturing the same, and apparatus for perforating via holes |
| CN102518993A (en) * | 2011-12-16 | 2012-06-27 | 合肥美菱股份有限公司 | Refrigerator and total-reflection honeycomb backlight LED illuminating lamp thereof |
| CN103104843A (en) * | 2013-01-24 | 2013-05-15 | 杭州纳晶照明技术有限公司 | Lighting device |
-
2003
- 2003-06-27 CN CN 03266238 patent/CN2634501Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101296580B (en) * | 2007-04-23 | 2011-05-18 | 三星电机株式会社 | Printed circuit board, method of manufacturing the same, and apparatus for perforating via holes |
| US8037584B2 (en) | 2007-04-23 | 2011-10-18 | Samsung Electro-Mechanics Co., Ltd. | Printed circuit board, method of manufacturing the same, and apparatus for perforating via holes |
| CN102518993A (en) * | 2011-12-16 | 2012-06-27 | 合肥美菱股份有限公司 | Refrigerator and total-reflection honeycomb backlight LED illuminating lamp thereof |
| CN103104843A (en) * | 2013-01-24 | 2013-05-15 | 杭州纳晶照明技术有限公司 | Lighting device |
| CN103104843B (en) * | 2013-01-24 | 2015-03-25 | 杭州纳晶照明技术有限公司 | Lighting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEIZHI INTELLIGENT LTD. Free format text: FORMER OWNER: YAO ZHITU Effective date: 20070615 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20070615 Address after: The British Virgin Islands of Tortola Luther Wenham town 1 De Castro Road No. 24 building Accra Island Patentee after: Wezhi Intelligent Ltd Address before: 518000 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee before: Yao Zhitu |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Waichi Opto Technology (Shenzhen) Ltd. Assignor: Wezhi Intelligent Ltd Contract fulfillment period: 2009.2.1 to 2014.2.1 Contract record no.: 2009990000187 Denomination of utility model: Color changing and film changing type sub white LED back light source Granted publication date: 20040818 License type: Exclusive license Record date: 20090316 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.1 TO 2014.2.1; CHANGE OF CONTRACT Name of requester: WEIZHI OPTOELECTRONIC( SHENZHEN ) CO., LTD. Effective date: 20090316 |
|
| ASS | Succession or assignment of patent right |
Owner name: WAI CHI OPTOELECTRONIC (SHENZHEN) CO., LTD. Free format text: FORMER OWNER: WAI CHI INTELLIGENT CO., LTD. Effective date: 20120214 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: 518126 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120214 Address after: 518126 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee after: Waichi Opto Technology (Shenzhen) Ltd. Address before: The British Virgin Islands, Tortola, Luther Wenham Town, 1 islands, 24 De Castro Road, building Accra Patentee before: Wezhi Intelligent Ltd |
|
| C56 | Change in the name or address of the patentee |
Owner name: WAI CHI OPTO (SHENZHEN) TECHNOLOGY LTD. Free format text: FORMER NAME: WEI CHI OPTO TECHNOLOGY (SHENZHEN) LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 518126 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee after: Shenzhen Waichi Photoelectric Co., Ltd. Address before: 518126 Guangdong city of Shenzhen province Baoan District Xixiang Town Industrial Zone second Patentee before: Waichi Opto Technology (Shenzhen) Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130627 Granted publication date: 20040818 |