CN105355760A - Light emitting diode (LED) device characterized by wide color gamut display - Google Patents
Light emitting diode (LED) device characterized by wide color gamut display Download PDFInfo
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- CN105355760A CN105355760A CN201410645260.4A CN201410645260A CN105355760A CN 105355760 A CN105355760 A CN 105355760A CN 201410645260 A CN201410645260 A CN 201410645260A CN 105355760 A CN105355760 A CN 105355760A
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- led component
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- colour gamut
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Abstract
The invention discloses a light emitting diode (LED) device characterized bywide color gamut display. The LED device comprises a package body, an LED chip module and fluorescent powder adhesive, wherein the package body is provided with a package groove, the LED chip module is arranged at the bottom of the package groove, a chip of the LED chip module is a blue-light chip, and the fluorescent powder adhesive is arranged in the package groove and formed by mixing fluoride K<2>SiF<6>.Mn<4+> multi-peak red fluorescent powder, green fluorescent powder and silica gel. Through substituting the traditional fluorescent powder by the fluoride K<2>SiF<6>.Mn<4+> multi-peak red fluorescent powder, the red-light excitation efficiency, chromaticity coordinate position and half-peak width of the LED device are effectively improved, the color gamut coverage rate of a liquid crystal display product is increased, and compared with nitride red fluorescent powder, the LED device has the advantages that the luminous efficiency is obviously improved.
Description
Technical field
The present invention relates to a kind of LED component of wide colour gamut display.
Background technology
LED is a kind of solid-state semiconductor device, and he directly can convert electrical energy into luminous energy, and the advantage such as it has, and volume is little, little power consumption, life-span are long, the high and low heat of brightness, environmental protection, is described as 21st century new light sources.
Be generally used for the LED component of liquid crystal display product, mostly adopt blue-light LED chip+fluorescent material to send white light, and fluorescent material is the key factor determining LED-backlit liquid crystal display colour gamut.Market mainly uses aluminate Y
3al
5o
12: Ce
3+(YAG:Ce) as fluorescent material, because its colorimetric purity is not good, color domain coverage ratio is usually at about 70%NTSC; Nitride red fluorescent powder and Sialon SiAlON:Eu green emitting phosphor assembled scheme, color domain coverage ratio can bring up to 80%NTSC, but color domain coverage ratio is still difficult to reach more than 85%NTSC, and the comparatively front technical scheme of planting of LED component luminous efficiency has obvious decline.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of LED component of wide colour gamut display.
The LED component of wide colour gamut display of the present invention comprises: packaging body, LED chip module and phosphor gel, described packaging body is provided with encapsulation groove, LED chip module is arranged on encapsulation trench bottom, the chip of LED chip module is blue chip, described phosphor gel is arranged in encapsulation groove, and phosphor gel adopts fluoride K
2siF
6: Mn
4+the mixing of multimodal red fluorescence powder, green emitting phosphor and silica gel is formed.
Preferably, described fluoride K
2siF
6: Mn
4+the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor accounts for 51% ~ 60% of phosphor gel; Described silica gel accounts for 40% ~ 49% of phosphor gel.
Preferably, in described phosphor gel, fluoride K
2siF
6: Mn
4+the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor and the optimal proportion of silica gel are 51:49.
Preferably, described fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder accounts for 20% ~ 68% of fluorescent material total amount; Described green emitting phosphor accounts for 32% ~ 80% of fluorescent material total amount.
Preferably, in described fluorescent material total amount, fluoride K
2siF
6: Mn
4+the optimal proportion of multimodal red fluorescence powder and green emitting phosphor is 26:74.
Preferably, the wavelength of described blue chip is 440nm ~ 460nm.
Preferably, described fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel mix with special ratios, jelly, are finally solidificated in encapsulation groove by heating.
Preferably, described fluoride K
2siF
6: Mn
4+the red light peak wavelength that multimodal red fluorescence powder sends is 630nm, and described ruddiness half-peak breadth is 4 ± 0.5nm.
Preferably, described green emitting phosphor is the nitrogen oxide of beta-SiAlon type.
Preferably, connected by gold thread between the blue chip of described LED chip module.
Preferably, the LED component of described wide colour gamut display is applied to the LED component encapsulating structure of various liquid crystal display.
The LED component of wide colour gamut display of the present invention is improved mainly for the application of fluorescent material in LED component, by adopting fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder replaces conventional fluorescent powder, its spectrum contains several narrow peak, effective improve LED component ruddiness launching efficiency, chromaticity coordinates position and half-peak breadth, increase the color domain coverage ratio of liquid crystal display product, and compare nitride red fluorescent powder and have obvious luminous efficiency to promote.
Adopt fluoride K
2siF
6: Mn
4+the arranging scheme of multimodal red fluorescence powder, green emitting phosphor and blue chip, can obtain the RGB light that color film spectrum matches with LCDs, reduce other colors on color film through.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention 7020 encapsulating structure schematic cross-section;
Fig. 2 is embodiments of the invention 3528 encapsulating structure schematic cross-section;
Fig. 3 is aluminate Y
3al
5o
12: Ce
3+(YAG:Ce) as the spectrogram of fluorescent material;
Fig. 4 is the spectrogram of nitride red fluorescent powder and Sialon SiAlON:Eu green emitting phosphor combination fluorescent material;
Fig. 5 is fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel are using special ratios mixing as the spectrogram of phosphor gel.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in detail.
As shown in Figure 1, the LED component of embodiments of the invention, packaging body 1 is provided with encapsulation groove 2, LED chip module is provided with bottom encapsulation groove 2, the chip of LED chip module is blue chip 3, blue chip 3 is welded to connect by gold thread 4, and be provided with phosphor gel 5 in encapsulation groove 2, phosphor gel 5 adopts fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel are formed with special ratios mixing, jelly, are finally solidificated in encapsulation groove 2 by heating.
Fluoride K in phosphor gel
2siF
6: Mn
4+the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor accounts for 51% ~ 60% of phosphor gel, and silica gel accounts for 40% ~ 49% of phosphor gel.
Fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder accounts for fluoride K
2siF
6: Mn
4+20% ~ 68% of the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor, green emitting phosphor accounts for fluoride K
2siF
6: Mn
4+32% ~ 80% of the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor.
When reaching certain application coordinate points CIEx0.262CIEy0.214, in phosphor gel, fluoride K
2siF
6: Mn
4+the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor and the optimal proportion of silica gel are 51:49; Fluoride K
2siF
6: Mn
4+in the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor, fluoride K
2siF
6: Mn
4+the optimal proportion of multimodal red fluorescence powder and green emitting phosphor is 26:74.The phosphor gel luminous efficiency of this kind of ratio and color domain coverage ratio better.
Use fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, and according to the demand such as brightness, colour gamut, different types of green emitting phosphor of can arranging in pairs or groups, if green emitting phosphor is the nitrogen oxide of beta-SiAlon type.
Phosphor gel 5 is evenly distributed in encapsulation groove 2, covers blue chip 3 and gold thread 4 completely, fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder is after being subject to the blue light of specific wavelength (440nm ~ 460nm) and exciting, to launch peak wavelength be about 630nm, half-peak breadth FWHM is the ruddiness of 4 ± 0.5nm, such concentration of energy, decrease the optical loss of whole display system, promote light efficiency.
The present invention adopts fluoride K
2siF
6: Mn
4+the arranging scheme of multimodal red fluorescence powder, green emitting phosphor and blue chip, can obtain the RGB light that color film spectrum matches with LCDs, reduce other colors on color film through.
The LED component of wide colour gamut display of the present invention adopts fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel, as the scheme of phosphor gel, are applicable to polytype packaging body 1, as 7020,7030,4014,3528 etc.
As shown in Figure 1, be 7020 encapsulating structures, by fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel mix with special ratios, phosphor gel 5 is evenly distributed in encapsulation groove 2, coordinates other lamp bar assemblies, be applied to side entering type liquid crystal display product.Depend on arranged in pairs or groups liquid crystal display screen and ColorFilter photoresistance, colour gamut can reach 85%-95%NTSC.
Be illustrated in figure 2 3528 encapsulating structures, equally according to special ratios modulation fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel, be evenly arranged in encapsulation groove 2, coordinate secondary optical lens and other lamp bar assemblies, is applied to directly-down liquid crystal display product.Depend on arranged in pairs or groups liquid crystal display screen and ColorFilter photoresistance, colour gamut can reach 85%-90%NTSC.
As shown in Figure 3, market mainly uses aluminate Y
3al
5o
12: Ce
3+(YAG:Ce) as fluorescent material, but due to its colorimetric purity not good, color domain coverage ratio is not high, usually at about 70%NTSC; Nitride red fluorescent powder and Sialon SiAlON:Eu green emitting phosphor combine the scheme as fluorescent material, its spectrogram as shown in Figure 4, color domain coverage ratio can reach 80%NTSC, but still is difficult to reach more than 85%NTSC, and LED component luminous efficiency comparatively uses aluminate Y
3al
5o
12: Ce
3+(YAG:Ce) technical scheme as fluorescent material has obvious decline.
The present invention is improved mainly for the application of fluorescent material in LED component, by adopting fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder replaces above-mentioned conventional fluorescent powder, coordinate green emitting phosphor and silica gel, its spectrogram as shown in Figure 5, containing several narrow peak, the effective CIEx value improving LED component ruddiness, increase the color domain coverage ratio of liquid crystal display product, make it reach more than 85%NTSC, and compare nitride red fluorescent powder and have obvious luminous efficiency to promote.
The present invention is not limited to above-mentioned execution mode, if do not depart from the spirit and scope of the present invention to various change of the present invention or distortion, if these are changed and distortion belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these changes and distortion.
Claims (11)
1. the LED component of one kind wide colour gamut display, it is characterized in that, comprise: packaging body, LED chip module and phosphor gel, described packaging body is provided with encapsulation groove, LED chip module is arranged on encapsulation trench bottom, the chip of LED chip module is blue chip, and described phosphor gel is arranged in encapsulation groove, and phosphor gel adopts fluoride K
2siF
6: Mn
4+the mixing of multimodal red fluorescence powder, green emitting phosphor and silica gel is formed.
2. the LED component of wide colour gamut display according to claim 1, is characterized in that: described fluoride K
2siF
6: Mn
4+the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor accounts for 51% ~ 60% of phosphor gel; Described silica gel accounts for 40% ~ 49% of phosphor gel.
3. the LED component of wide colour gamut display according to claim 2, is characterized in that: in described phosphor gel, fluoride K
2siF
6: Mn
4+the fluorescent material total amount of multimodal red fluorescence powder and green emitting phosphor and the optimal proportion of silica gel are 51:49.
4. the LED component of wide colour gamut display according to claim 2, is characterized in that: described fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder accounts for 20% ~ 68% of fluorescent material total amount; Described green emitting phosphor accounts for 32% ~ 80% of fluorescent material total amount.
5. the LED component of wide colour gamut display according to claim 4, is characterized in that: in described fluorescent material total amount, fluoride K
2siF
6: Mn
4+the optimal proportion of multimodal red fluorescence powder and green emitting phosphor is 26:74.
6. the LED component of wide colour gamut display according to claim 1, is characterized in that: the wavelength of described blue chip is 440nm ~ 460nm.
7. the LED component of wide colour gamut display according to claim 1, is characterized in that: described fluoride K
2siF
6: Mn
4+multimodal red fluorescence powder, green emitting phosphor and silica gel mix with special ratios, jelly, are finally solidificated in encapsulation groove by heating.
8. the LED component of wide colour gamut display according to claim 1, is characterized in that: described fluoride K
2siF
6: Mn
4+the red light peak wavelength that multimodal red fluorescence powder sends is 630nm, and described ruddiness half-peak breadth is 4 ± 0.5nm.
9. the LED component of wide colour gamut display according to claim 1, is characterized in that: described green emitting phosphor is the nitrogen oxide of beta-SiAlon type.
10. the LED component of wide colour gamut display according to claim 1, be is characterized in that: connected by gold thread between the blue chip of described LED chip module.
The LED component of 11. wide colour gamut displays according to claim 1, is characterized in that: the LED component of described wide colour gamut display is applied to the LED component encapsulating structure of various liquid crystal display.
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|---|---|---|---|
| CN201410645260.4A CN105355760A (en) | 2014-11-11 | 2014-11-11 | Light emitting diode (LED) device characterized by wide color gamut display |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104810357A (en) * | 2015-04-02 | 2015-07-29 | 信利半导体有限公司 | Display, backlight module and LED light source device |
| CN106229402A (en) * | 2016-09-14 | 2016-12-14 | 宜昌惠科科技有限公司 | A kind of high colour gamut white light LEDs preparation method using green light fluorescent powder collocation red light fluorescent powder |
| CN107065297A (en) * | 2016-12-08 | 2017-08-18 | 郭少平 | A kind of high colour gamut display backlight process |
| WO2018192208A1 (en) * | 2017-04-19 | 2018-10-25 | 深圳Tcl新技术有限公司 | Led light source, light bar and display device |
| CN111092140A (en) * | 2019-11-27 | 2020-05-01 | 芜湖锐拓电子有限公司 | Light emitting diode light source and display device |
| CN111106219A (en) * | 2018-10-25 | 2020-05-05 | 江苏罗化新材料有限公司 | High-color-gamut CSP LED and manufacturing process thereof |
| CN117153993A (en) * | 2023-09-20 | 2023-12-01 | 广东光沐半导体科技有限公司 | Full-ambient light LED packaging structure and packaging process |
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Cited By (9)
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| CN104810357A (en) * | 2015-04-02 | 2015-07-29 | 信利半导体有限公司 | Display, backlight module and LED light source device |
| CN106229402A (en) * | 2016-09-14 | 2016-12-14 | 宜昌惠科科技有限公司 | A kind of high colour gamut white light LEDs preparation method using green light fluorescent powder collocation red light fluorescent powder |
| CN107065297A (en) * | 2016-12-08 | 2017-08-18 | 郭少平 | A kind of high colour gamut display backlight process |
| WO2018192208A1 (en) * | 2017-04-19 | 2018-10-25 | 深圳Tcl新技术有限公司 | Led light source, light bar and display device |
| CN111106219A (en) * | 2018-10-25 | 2020-05-05 | 江苏罗化新材料有限公司 | High-color-gamut CSP LED and manufacturing process thereof |
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| CN117153993A (en) * | 2023-09-20 | 2023-12-01 | 广东光沐半导体科技有限公司 | Full-ambient light LED packaging structure and packaging process |
| CN117153993B (en) * | 2023-09-20 | 2024-04-26 | 广东光沐半导体科技有限公司 | Full-ambient light LED packaging structure and packaging process |
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Application publication date: 20160224 |