CN204407325U - The LED light source of adjustable color - Google Patents
The LED light source of adjustable color Download PDFInfo
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- CN204407325U CN204407325U CN201420788015.4U CN201420788015U CN204407325U CN 204407325 U CN204407325 U CN 204407325U CN 201420788015 U CN201420788015 U CN 201420788015U CN 204407325 U CN204407325 U CN 204407325U
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Abstract
The utility model provides a kind of LED light source of adjustable color, comprising: substrate, and described substrate is divided into multiple closed area, and described multiple closed area constitutes multiple colour temperature district; Be positioned at the LED chip be electrically connected on substrate and with substrate, there is in each closed area at least one LED chip; Be coated on the fluorescent colloid on LED chip surface; Wherein, when adjacent two closed areas are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them closed area is higher than the viscosity of the fluorescent colloid of another closed area, the height of outermost closed area coating fluorescent colloid is greater than the height of the arbitrary closed area coating in inner side fluorescent colloid, thus the division in different-colour region can be realized by high viscosity and low viscous fluorescent colloid, both save manufacturing cost, greatly save again the time of encapsulation process.
Description
Technical field
The utility model relates to technical field of semiconductors, more particularly, relates to a kind of LED light source of adjustable color.
Background technology
Along with LED (Light-Emitting Diode, light-emitting diode) illumination development make rapid progress, the LED light source of the single colour temperature of tradition cannot meet the demand of high-end lighting consumer, and therefore, the LED light source of adjustable color has become one of product of people's extensive concern.Because the LED light source of adjustable color can export specific colour temperature according to the demand of user, therefore, it is possible to provide abundant lighting experience for user, it is one of important directions of following LED illumination development.
The LED light source of existing adjustable color adopts COB (chip on board) packaged type to encapsulate mostly, can utilize barricade that LED chip is divided into several different color temperature regions in the process of encapsulation, then fill different fluorescent colloids in different color temperature regions, and reach by the brightness in control circuit control different-colour region the object regulating colour temperature.
But, LED light source due to above-mentioned adjustable color utilizes barricade LED chip to be divide into several different color temperature regions, therefore, can have gap between the different-colour region of the LED light source after encapsulation, cause the air-tightness of LED light source poor, affect the quality and performance of LED light source.
Utility model content
In view of this, the utility model provides a kind of LED light source of adjustable color, poor with the air-tightness solving the LED light source caused owing to adopting barricade in prior art, affects the problem of the quality and performance of LED light source.
For achieving the above object, the utility model provides following technical scheme:
A LED light source for adjustable color, comprising:
Substrate, described substrate is divided into multiple closed area, and described multiple closed area constitutes multiple colour temperature district;
Be positioned at the LED chip be electrically connected on described substrate and with described substrate, in each described closed area, there is at least one LED chip;
Be coated on the fluorescent colloid on described LED chip surface;
Wherein, when adjacent two closed areas are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them closed area is higher than the viscosity of the fluorescent colloid of another closed area, and the height of outermost closed area coating fluorescent colloid is greater than the height of the arbitrary closed area coating in inner side fluorescent colloid.
Preferably, be positioned at the closed area at center in described multiple closed area and form the first colour temperature district with spaced closed area, the closed area at described center, other closed areas form the second colour temperature district.
Preferably, when outermost closed area is positioned at the second colour temperature district, the viscosity of the fluorescent colloid in described second colour temperature district is higher than the viscosity of the fluorescent colloid in described first colour temperature district.
Preferably, the viscosity of the fluorescent colloid in described second colour temperature district is greater than 20PaS.
Preferably, the viscosity with the fluorescent colloid of the different closed areas in color temperature district is identical or different.
Preferably, also comprise:
The first positive electrode be electrically connected with the LED chip in described first colour temperature district and the first negative electrode;
The second positive electrode be electrically connected with the LED chip in described second colour temperature district and the second negative electrode.
Preferably, the fluorescent material mixed in the fluorescent colloid in described second colour temperature district is mainly the mixture of a kind of in silicate red fluorescent powder or nitride red fluorescent powder or two kinds.
Preferably, the fluorescent material mixed in the fluorescent colloid in described first colour temperature district is mainly one or both mixtures of aluminate or silicate yellow fluorescent powder.
Preferably, described closed area is circular rings or Q-RING.
Preferably, described LED chip is blue chip or the combination for blue chip and red light chips.
Compared with prior art, technical scheme provided by the utility model has the following advantages:
The LED light source of adjustable color provided by the utility model, substrate is divided into multiple closed area, described multiple closed area constitutes multiple colour temperature district, due to when adjacent two closed areas are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them closed area is higher than the viscosity of the fluorescent colloid of another annular region, therefore, adjacent two annular regions can realize the division in different-colour region by high viscosity and low viscous fluorescent colloid, thus do not need to adopt barricade to divide color temperature regions, both manufacturing cost was saved, turn avoid the existence of barricade and the poor air-tightness of the LED light source caused, affect the problem of the quality and performance of LED light source,
And, in the LED light source of adjustable color provided by the utility model, height due to outermost closed area coating fluorescent colloid is greater than the height of the arbitrary closed area coating in inner side fluorescent colloid, therefore, the fluorescent colloid of closed area, inner side can apply colloid by the mode of natural levelling under gravity, greatly saves the time of LED light source encapsulation process.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of annular region division figure of the LED light source that Fig. 1 provides for an embodiment of the present utility model;
The another kind of annular region division figure of the LED light source that Fig. 2 provides for an embodiment of the present utility model;
The LED chip distribution map of the LED light source that Fig. 3 provides for an embodiment of the present utility model;
The plane graph of LED light source after the second colour temperature district coating fluorescent colloid that Fig. 4 provides for an embodiment of the present utility model;
The side view of LED light source after the second colour temperature district coating fluorescent colloid that Fig. 5 provides for an embodiment of the present utility model;
The first colour temperature district that Fig. 6 provides for an embodiment of the present utility model and the second colour temperature district all apply the plane graph of the LED light source after fluorescent colloid;
The first colour temperature district that Fig. 7 provides for an embodiment of the present utility model and the second colour temperature district all apply the side view of the LED light source after fluorescent colloid.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
An embodiment of the present utility model provides a kind of LED light source of adjustable color, and wherein, this LED light source comprises: substrate, and described substrate is divided into multiple closed area, and described multiple closed area constitutes multiple colour temperature district; Be positioned at the LED chip be electrically connected on described substrate and with described substrate, in each described closed area, there is at least one LED chip; Be coated on the fluorescent colloid on described LED chip surface, wherein, when adjacent two closed areas are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them closed area is higher than the viscosity of the fluorescent colloid of another closed area, and the height of outermost closed area coating fluorescent colloid is greater than the height of the arbitrary closed area coating in inner side fluorescent colloid.
In the present embodiment, substrate is divided in order to multiple closed ring region, wherein, multiple closed ring region can be circular rings as shown in Figure 1, the i.e. annular region closed of multiple concentric circles formation, also can be Q-RING as shown in Figure 2, i.e. the closed ring region of multiple square formation with one heart.In the present embodiment, substrate is pottery or metal material, is preferably ceramic material.
In addition, substrate is not only divided in order to multiple closed ring region, and described multiple closed ring region is divided in order to multiple colour temperature district.In the present embodiment, preferably, the mode dividing colour temperature district is: be positioned at the annular region at center in described multiple closed ring region and form the first colour temperature district with the spaced annular region of the annular region at described center, other annular regions form the second colour temperature district.
Particularly, as shown in Figure 1, substrate is divided in order to 6 closed ring regions, i.e. the first annular region 1, second annular region 2, the 3rd annular region 3, the 4th annular region 4, the 5th annular region 5 and the 6th annular region 6, then the first annular region 1, the 3rd annular region 3 and the 5th annular region 5 constitute the first colour temperature district A, and the second annular region 2, the 4th annular region 4 and the 6th annular region 6 constitute the second colour temperature district B.
In the present embodiment, in the process making substrate, according to the colour temperature district divided in advance and annular region, make corresponding conducting wire etc. in a substrate, to carry out the installation of LED chip.Install the board structure after LED chip as shown in Figure 3, lay at least one LED chip in each annular region, adopt gold thread to be electrically connected between these LED chips, in other embodiments, LED chip is flip-chip, does not need gold thread.
In addition, the substrate of the LED light source that the present embodiment provides also has the electrode pair for LED chip and control circuit electrical connection, and the number of electrode pair is equal with the number in colour temperature district.As shown in Figure 3, in the present embodiment, when substrate comprises Liang Ge colour temperature district, substrate comprises two electrode pairs, namely comprises the first electrode pair of the first positive electrode 10 and the first negative electrode 11 composition and the second electrode pair of the second positive electrode 20 and the second negative electrode 21 composition.
Further, the LED chip series connection in same annular region is rear and with the LED chip connection in series-parallel in other annular regions in color temperature district, the two ends of the circuit then after parallel connection are connected with corresponding electrode pair respectively.When substrate comprises the first colour temperature district A and the second colour temperature district B, be positioned at described first colour temperature district A and be positioned at same annular region LED chip series connection after be connected with the first negative electrode 11 with described first positive electrode 10; Be positioned at described second colour temperature district B and be positioned at same annular region LED chip series connection after be connected with the second negative electrode 21 with described second positive electrode 20.
Particularly, LED chip in first annular region 1 is the first LED chip string in series mutually, LED chip in 3rd annular region 3 is the 3rd LED chip string in series mutually, LED chip in 5th annular region 5 is the 5th LED chip string in series mutually, and, first LED chip string, the 3rd LED chip string are connected with the first negative electrode 11 with the first positive electrode 10 with after the 5th LED chip connection in series-parallel, provide driving voltage by the first positive electrode 10 and the first negative electrode 11 to LED chip.
Because the LED chip in different colour temperature districts and different electrode pairs are connected, therefore, can by with Different electrodes to the control circuit be connected, the voltage in control different-colour district or size of current, thus regulate the colour temperature of LED light source with this.LED chip in the present embodiment is blue chip or the combination for blue chip and red light chips.
After LED chip installed by substrate, just need to encapsulate LED chip, in the present embodiment, when adjacent two annular regions are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them annular region is higher than the viscosity of the fluorescent colloid of another annular region, this makes it possible to the division being realized different-colour region by high viscosity and low viscous fluorescent colloid, thus do not need to adopt barricade to divide color temperature regions, both manufacturing cost was saved, turn avoid the existence of barricade and the poor air-tightness of the LED light source caused, affect the problem of the quality and performance of LED light source.
And, in the process of encapsulation, the height of outermost annular region coating fluorescent colloid is greater than the height of the arbitrary annular region coating in inner side fluorescent colloid, like this when the LED chip of the annular region to inner side encapsulates, just can apply colloid by the mode of natural levelling under gravity, greatly save the time of LED light source encapsulation process.
Based on this, in the present embodiment, when outermost annular region is positioned at the second colour temperature district B, the viscosity of the fluorescent colloid of described second colour temperature district B is greater than the viscosity of the fluorescent colloid of the first colour temperature district A, and the viscosity of the fluorescent colloid of described second colour temperature district B is greater than 20PaS.In other embodiments, when outermost annular region is positioned at the first colour temperature district A, the viscosity of the fluorescent colloid of described first colour temperature district A is greater than the viscosity of the fluorescent colloid of the second colour temperature district B, and the viscosity of the fluorescent colloid of described first colour temperature district A is greater than 20PaS.
Preferably, viscosity with the fluorescent colloid of the different annular regions in color temperature district is identical, certainly, the utility model is not limited in this, in other embodiments, viscosity with the fluorescent colloid of the different annular regions in color temperature district also can be different, but the viscosity of the fluorescent colloid of outermost annular region still needs the viscosity of the fluorescent colloid of the annular region being greater than inner side.
When the viscosity of the fluorescent colloid of the second colour temperature district B is greater than the viscosity of the fluorescent colloid of the first colour temperature district A, the process of coating fluorescent colloid is: first form fluorescent colloid at the second colour temperature district B point glue, fluorescent colloid is applied again at the first colour temperature district A, second colour temperature district B applies the plane graph of the LED light source after fluorescent colloid as shown in Figure 4, second colour temperature district B applies the side view of the LED light source after fluorescent colloid as shown in Figure 5, first colour temperature district A and the second colour temperature district B all applies the plane graph of the LED light source after fluorescent colloid as shown in Figure 6, first colour temperature district A and the second colour temperature district B all applies the side view of the LED light source after fluorescent colloid as shown in Figure 7.
As shown in figure 5 and figure 7, the height applying the fluorescent colloid of the 6th annular region 6 in the second colour temperature district B is greater than the height of the fluorescent colloid of the 4th annular region 4 and the second annular region 2 in coating second colour temperature district B, like this, when the first colour temperature district A applies low viscous fluorescent colloid, because low viscous fluorescent colloid has very strong mobility, therefore, meeting natural levelling under gravity, realize the unified some glue in the first colour temperature district, one-body molded, thus do not need the first colour temperature district A point glue, greatly save packaging time, and be that the fluorescent colloid height of full-bodied fluorescent colloid and coating is the highest due to outermost coating, would not overflow after fluorescent colloid levelling in arbitrary region, the inside.
In the present embodiment, the height of the fluorescent colloid of the 4th annular region 4 equals the height of the fluorescent colloid of the second annular region 2, in other embodiments, the height of the fluorescent colloid of the 4th annular region 4 can be not equal to the height of the fluorescent colloid of the second annular region 2, and the utility model is not limited in this.
In addition, in the present embodiment, also the different-colour without colour temperature district can be realized by the different phosphor constituents of fluorescent colloid in the first colour temperature district A and the second colour temperature district B.Preferably, when the viscosity of the fluorescent colloid of the first colour temperature district A or the second colour temperature district B is higher, the fluorescent material mixed in this fluorescent colloid is mainly the mixture of a kind of in silicate red fluorescent powder or nitride red fluorescent powder or two kinds, there is stable excellent luminescent properties, make light source have good lighting effect; When the viscosity of the fluorescent colloid of the second colour temperature district B or the first colour temperature district A is lower, the fluorescent material mixed in this fluorescent colloid is mainly one or both mixtures of aluminate or silicate yellow fluorescent powder, be conducive to the toning effect and the ability that improve light source, improve the quality of product.
The LED light source of the adjustable color that the present embodiment provides, substrate is divided into multiple closed ring region, described multiple closed ring region constitutes multiple colour temperature district, when adjacent two annular regions are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them annular region is higher than the viscosity of the fluorescent colloid of another annular region, therefore, adjacent two annular regions can realize the division in different-colour region by high viscosity and low viscous fluorescent colloid, thus do not need to adopt barricade to divide color temperature regions, both manufacturing cost was saved, turn avoid the existence of barricade and the poor air-tightness of the LED light source caused, affect the problem of the quality and performance of LED light source,
And, in the LED light source of the adjustable color that the present embodiment provides, height due to outermost annular region coating fluorescent colloid is greater than the height of the arbitrary annular region coating in inner side fluorescent colloid, therefore, the fluorescent colloid in interior annular region can be formed by the mode of natural levelling under gravity, greatly saves the time of LED light source encapsulation process.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a LED light source for adjustable color, is characterized in that, comprising:
Substrate, described substrate is divided into multiple closed area, and described multiple closed area constitutes multiple colour temperature district;
Be positioned at the LED chip be electrically connected on described substrate and with described substrate, in each described closed area, there is at least one LED chip;
Be coated on the fluorescent colloid on described LED chip surface;
Wherein, when adjacent two closed areas are positioned at different colour temperature districts, the viscosity of the fluorescent colloid of one of them closed area is higher than the viscosity of the fluorescent colloid of another closed area, and the height of outermost closed area coating fluorescent colloid is greater than the height of the arbitrary closed area coating in inner side fluorescent colloid.
2. LED light source according to claim 1, is characterized in that, be positioned at the closed area at center in described multiple closed area and form the first colour temperature district with spaced closed area, the closed area at described center, other closed areas form the second colour temperature district.
3. LED light source according to claim 2, is characterized in that, when outermost closed area is positioned at the second colour temperature district, the viscosity of the fluorescent colloid in described second colour temperature district is higher than the viscosity of the fluorescent colloid in described first colour temperature district.
4. LED light source according to claim 3, is characterized in that, the viscosity of the fluorescent colloid in described second colour temperature district is greater than 20PaS.
5. LED light source according to claim 4, is characterized in that, the viscosity with the fluorescent colloid of the different closed areas in color temperature district is identical or different.
6. LED light source according to claim 2, is characterized in that, also comprises:
The first positive electrode be electrically connected with the LED chip in described first colour temperature district and the first negative electrode;
The second positive electrode be electrically connected with the LED chip in described second colour temperature district and the second negative electrode.
7. LED light source according to claim 3, is characterized in that, the fluorescent material in the fluorescent colloid in described second colour temperature district is mainly silicate red fluorescent powder or nitride red fluorescent powder.
8. LED light source according to claim 3, is characterized in that, the fluorescent material in the fluorescent colloid in described first colour temperature district is mainly aluminate or silicate yellow fluorescent powder.
9. LED light source according to claim 1, is characterized in that, described closed area is circular rings or Q-RING.
10. LED light source according to claim 1, is characterized in that, described LED chip is blue chip or the combination for blue chip and red light chips.
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| CN201420788015.4U CN204407325U (en) | 2014-12-11 | 2014-12-11 | The LED light source of adjustable color |
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| CN201420788015.4U CN204407325U (en) | 2014-12-11 | 2014-12-11 | The LED light source of adjustable color |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016090726A1 (en) * | 2014-12-11 | 2016-06-16 | 佛山市国星光电股份有限公司 | Packaging method for color temperature tunable led light source |
| JP2019009390A (en) * | 2017-06-28 | 2019-01-17 | パナソニックＩｐマネジメント株式会社 | Light emitting apparatus and optical analysis system including the same |
| CN109686834A (en) * | 2018-12-25 | 2019-04-26 | 江苏罗化新材料有限公司 | A kind of LED light source and LED desk lamp of adjustable color |
| CN112151519A (en) * | 2020-10-23 | 2020-12-29 | 开发晶照明（厦门）有限公司 | Chip-on-board type photoelectric device |
| CN113759604A (en) * | 2021-09-08 | 2021-12-07 | 盐城东山精密制造有限公司 | Support structure of LED lamp panel and manufacturing method thereof |
-
2014
- 2014-12-11 CN CN201420788015.4U patent/CN204407325U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016090726A1 (en) * | 2014-12-11 | 2016-06-16 | 佛山市国星光电股份有限公司 | Packaging method for color temperature tunable led light source |
| JP2019009390A (en) * | 2017-06-28 | 2019-01-17 | パナソニックＩｐマネジメント株式会社 | Light emitting apparatus and optical analysis system including the same |
| CN109686834A (en) * | 2018-12-25 | 2019-04-26 | 江苏罗化新材料有限公司 | A kind of LED light source and LED desk lamp of adjustable color |
| CN109686834B (en) * | 2018-12-25 | 2022-02-01 | 江苏罗化新材料有限公司 | Color temperature adjustable LED light source and LED table lamp |
| CN112151519A (en) * | 2020-10-23 | 2020-12-29 | 开发晶照明（厦门）有限公司 | Chip-on-board type photoelectric device |
| CN113759604A (en) * | 2021-09-08 | 2021-12-07 | 盐城东山精密制造有限公司 | Support structure of LED lamp panel and manufacturing method thereof |
| CN113759604B (en) * | 2021-09-08 | 2024-03-08 | 盐城东山精密制造有限公司 | Supporting structure of LED lamp panel and manufacturing method thereof |
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