CN102543989A - LED(light-emitting diode)device - Google Patents
LED(light-emitting diode)device Download PDFInfo
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- CN102543989A CN102543989A CN2012100722297A CN201210072229A CN102543989A CN 102543989 A CN102543989 A CN 102543989A CN 2012100722297 A CN2012100722297 A CN 2012100722297A CN 201210072229 A CN201210072229 A CN 201210072229A CN 102543989 A CN102543989 A CN 102543989A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/49105—Connecting at different heights
- H01L2224/49107—Connecting at different heights on the semiconductor or solid-state body
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to the field of photoelectric technology and provides an LED (light-emitting diode) device so as to solve the problem that presently the requirements on adjustable color temperature and adjustable color rendering index can not be satisfied. The LED device provided by the invention comprises at least one white light LED; a first wavelength LED and a second wavelength LED are arranged in the white light LED; the first wavelength LED is combined with phosphor glue to give off white light; the second wavelength LED is used for adjusting the color temperature and the color rendering index; and the working current of the second wavelength LED is smaller than the working current of the first wavelength LED. By adopting the technical scheme provided by the invention, not only are the requirements on adjustable color temperature and adjustable color rendering index satisfied, but also a high-light-effect LED with adjustable color temperature and high color rendering index is realized, and the performance of the LED device in the intelligent lighting area is improved.
Description
Technical field
The present invention relates to field of photoelectric technology, relate to a kind of LED matrix especially.
Background technology
Along with the development of semiconductor lighting technology, LED (Light Emitting Diode, light-emitting diode) has been widely used in the fields such as panel computer, notebook computer, LCD, large scale liquid crystal TV and indoor and outdoor lighting as backlight.The illumination LED common application is in fields such as bulb lamp, fluorescent lamp, plane lamp, advertising lightings.Existing market client is in order to use easy and to reduce cost and adapt to the needs of intelligent lighting, hopes to use and can realize that colour temperature refers to (color rendering index, be called for short to show refer to) adjustable single white light LEDs with showing.
Shown in Fig. 1 a and 1b, be present white-light LED structure sketch map, LED is made up of carrier 101, cavity 102, fluorescent glue 108, metal area and electrode.Carrier 101 is provided with a cavity 102, is provided with metal area 103 and metal area 104 in cavity 102 bottoms, and metal area 103 is connected to electrode 105 and electrode 106 with metal area 104.Blue-light LED chip 107 is positioned over metal area 104, in cavity 102, is filled with fluorescent glue 108, and said fluorescent glue 108 is the combination of fluorescent material and packaging plastic, said fluorescent material can for single powder such as bloom, also can be that composition powder is such as rouge and powder and green powder etc.
Blue-light LED chip energising back blue light-emitting excites yellow fluorescent powder or red, green emitting phosphor, in cavity, forms white light behind the mixed light.Obviously, the white light LEDs of this structure can not be adjusted colour temperature and show refer to, can't satisfy at present the demand to adjustable color temperature and adjustable apparent finger.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of LED matrix, to solve the demand that can't satisfy at present adjustable color temperature and adjustable apparent finger.
For addressing the above problem, the invention provides a kind of LED matrix, comprise at least one white light LEDs; Be provided with the first wavelength LED and the second wavelength LED in the said white light LEDs; The first wavelength LED and fluorescent glue combine to send white light, and the second wavelength LED is used to adjust colour temperature and color rendering index; Wherein, the operating current of the second wavelength LED is less than the operating current of the first wavelength LED.
Further, the operating current of the said second wavelength LED is 0.2 times～0.6 times of the first wavelength LED operating current.
Further, the said first wavelength LED is a blue-ray LED, and the said second wavelength LED is a red-light LED.
Preferably; Said LED matrix comprises a plurality of white light LEDs, and when said blue-ray LED and red-light LED had independently positive and negative electrode, the circuit of said a plurality of white light LEDs adopted series system; Be specially blue-ray LED and blue-ray LED is composed in series circuit, red-light LED and red-light LED are composed in series circuit; Or a plurality of blue-ray LED connection in series-parallel built-up circuits in said a plurality of white light LEDs, a plurality of red-light LED connection in series-parallel built-up circuits.
Preferably, said LED matrix comprises a plurality of white light LEDs, and when said blue-ray LED and red-light LED had public electrode, a plurality of blue-ray LEDs or red-light LED composed in parallel circuit in said a plurality of white light LEDs.
Further, adopting direct current or high-frequency pulse current is said LED matrix power supply, through regulating impulse duty ratio and current amplitude control luminosity.
Adopt technique scheme, not only realized at present demand adjustable color temperature and adjustable apparent finger, and realized adjustable color temperature, than the high light efficiency LED of high color rendering index (CRI), improved the performance of LED matrix.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes a part of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, does not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 a, 1b are present white-light LED structure sketch mapes;
Fig. 2 a, 2b are a kind of white light LEDs rack assumption diagrams;
Fig. 3 a, 3b are a kind of white-light LED structure figure;
The circuit structure diagram of a kind of white light LEDs that Fig. 4 a provides;
Fig. 4 b is the circuit structure diagram of first embodiment of the invention LED matrix;
Fig. 4 c is the circuit structure diagram of second embodiment of the invention LED matrix;
Other a kind of white-light LED structure figure that Fig. 5 a provides;
The circuit structure diagram of other a kind of white light LEDs that Fig. 5 b provides;
Fig. 5 c is the circuit structure diagram of third embodiment of the invention LED matrix;
Fig. 6 a, Fig. 7 a are colour temperature variation diagrams when regulating the variation of red-light LED electric current;
Fig. 6 b, Fig. 7 b regulate to show when the red-light LED electric current changes to refer to variation diagram.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearer, clear,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Shown in Fig. 2 a, 2b, Fig. 3 a, 3b; A kind of white-light LED structure figure is provided, and this white light LEDs is PLCC type LED, and its adjustable color temperature refers to showing; Wherein Fig. 2 a, 2b are the first embodiment white light LEDs rack assumption diagrams; Fig. 3 a, 3b are the first embodiment LED structure charts, and this white light LEDs has the cavity 202 of carrier 201 and carrier formation, and the first wavelength LED metal area 203 and the first wavelength LED metal area 204 are set in cavity; The both positive and negative polarity (the first wavelength LED electrode 205 and the first wavelength LED electrode 206) that connects the first wavelength LED respectively; The second wavelength LED metal area 207 and the second wavelength LED metal area 208, connect respectively the second wavelength LED both positive and negative polarity (the second wavelength LED electrode 209 and the second wavelength LED electrode 210), the first wavelength LED211 is arranged in the cavity; Optimum position is the center of cavity, and the second wavelength LED212 is positioned over the side of the first wavelength LED with horizontal direction parallel.The first wavelength LED is a blue-ray LED, and emission wavelength is 430nm-470nm, and the second wavelength LED is a red-light LED, and emission wavelength is 615--645nm.The fluorescent glue 213 of in cavity, filling is yellow fluorescent powder (the exciting peak value (Emission Peak) wavelength between 530-590nm of fluorescent material); And when only lighting the first wavelength LED (blue-ray LED) (not lighting the second wavelength LED); What send is white light; Rather than other light, the white light reference color temperature is generally at 4000K-10000K.When being applied to the LED illuminating product, send under the white light situation at blue-ray LED normal power-up, LED, flow through the electric current of red-light LED through adjusting, in the spectrum of former white light, increase the ruddiness composition, change colour temperature and color rendering index with the energy of red-light spectrum.
Shown in Fig. 4 a, the circuit structure diagram of a kind of white light LEDs that provides, wherein blue-ray LED 211 is a parallel-connection structure with red-light LED 212.
Shown in Fig. 4 b, be the circuit structure diagram of first embodiment of the invention LED matrix, this LED matrix comprises a plurality of white light LEDs; The circuit of said a plurality of white light LEDs adopts series system; Be specially blue-ray LED and blue-ray LED is composed in series circuit, red-light LED and red-light LED are composed in series circuit, during driving; Blue-ray LED adopts independently electric current power supply (VB1 → VB2), available direct current or high-frequency pulse current (controlling luminosity through regulating impulse duty ratio and current amplitude).
Red-light LED also adopts independently electric current power supply (VR1 → VR2), available direct current or high-frequency pulse current (controlling luminosity through regulating impulse duty ratio and current amplitude).
Shown in Fig. 4 c; Be the circuit structure diagram of second embodiment of the invention LED matrix, this LED matrix comprises a plurality of white light LEDs, wherein; A plurality of blue-ray LED connection in series-parallel built-up circuits; A plurality of red-light LED connection in series-parallel built-up circuits, during driving, blue-ray LED adopts independently electric current power supply (VB3 → VB4) available direct current or high-frequency pulse current (controlling luminosity through regulating impulse duty ratio and current amplitude).
Red-light LED also adopts independently electric current power supply (VR3 → VR4) available direct current or high-frequency pulse current (controlling luminosity through regulating impulse duty ratio and current amplitude).
(operating current of (red-light LED) is less than the operating current of the first wavelength LED (blue-ray LED) for the second wavelength LED; It preferentially is 0.20 times～0.6 times of first wavelength (blue-ray LED) operating current; Along with the red-light LED electric current increases; The relative colour temperature of LED descends, thereby realizes adjustable relative colour temperature, than the high light efficiency LED of high color rendering index (CRI).
Shown in Fig. 5 a, other a kind of white-light LED structure figure is provided, when said blue-ray LED and red-light LED have a public electrode; Be specially; This white light LEDs comprises three electrodes, and one of them electrode is a public pole 303, can be positive pole and also can be negative pole; Other two electrodes 304,305 are respectively negative pole or the positive pole of the first wavelength LED and the second wavelength LED; The first wavelength LED301 is arranged in the support cavity bottom, and optimum position is the center of cavity, and the second wavelength LED302 is positioned over the side of the first wavelength LED with horizontal direction parallel.The first wavelength LED is a blue-ray LED, and emission wavelength is 430nm-470nm, and the second wavelength LED is a red-light LED, and emission wavelength is 615--645nm.The fluorescent glue 213 of in cavity, filling is yellow fluorescent powder (the exciting peak value (Emission Peak) wavelength between 530-590nm of fluorescent material); And when only lighting the first wavelength LED (blue-ray LED) (not lighting the second wavelength LED); What send is white light; Rather than other light, the white light reference color temperature is generally at 4000K-10000K.
Shown in Fig. 5 b, the circuit structure diagram of the other a kind of white light LEDs that provides.Wherein, said blue-ray LED and red-light LED have a public negative pole.
Shown in Fig. 5 c; Be the circuit structure diagram of third embodiment of the invention LED matrix, this LED matrix comprises a plurality of white light LEDs, wherein; A plurality of blue-ray LEDs or red-light LED compose in parallel circuit; The blue-ray LED parallel connection is adopted independently electric current power supply (VB5 → VG), available direct current or high-frequency pulse current (controlling luminosity through regulating impulse duty ratio and current amplitude) together.
Red-light LED also parallel connection also adopts independently electric current power supply (VR5 → VG), available direct current or high-frequency pulse current (controlling luminosity through regulating impulse duty ratio and current amplitude) together.
(operating current of (red-light LED) is less than the operating current of first wavelength (blue-ray LED) for the second wavelength LED; Preferentially 0.20 times～0.6 times of first wavelength (blue-ray LED) operating current; Along with the red-light LED electric current increases; The relative colour temperature of LED descends, thereby realizes adjustable relative colour temperature, than the high light efficiency LED of high color rendering index (CRI).
The first wavelength LED is blue-ray LED (450nm), and the second wavelength LED is red-light LED (wavelength 620nm).When not lighting red-light LED when adopting 20mA to light blue-ray LED, colour temperature is that 6500K, color rendering index are 76 LED relatively.When the operating current that flows through blue-ray LED was 20mA, colour temperature changed shown in Fig. 6 a when flowing through the variation of red-light LED electric current, showed to refer to change shown in Fig. 6 b.
The first wavelength LED is blue-ray LED (450nm), and the second wavelength LED is red-light LED (wavelength 620nm).When not lighting red-light LED when adopting 20mA to light blue-ray LED, colour temperature is that 9300K, color rendering index are 78 LED relatively.When the operating current that flows through blue-ray LED was 20mA, colour temperature changed shown in Fig. 7 a when flowing through the variation of red-light LED electric current, showed to refer to change shown in Fig. 7 b.
Thus it is clear that, when blue-ray LED work produces white light,, can realize the variation of colour temperature and color rendering index well through the electric current of control red-light LED.The electric current that flows through red-light LED is big more, and colour temperature is low more.
Above-mentioned explanation illustrates and has described the preferred embodiments of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of accompanying claims of the present invention.
Claims (6)
1. LED matrix; Comprise at least one white light LEDs, be provided with the first wavelength LED and the second wavelength LED in the said white light LEDs, the first wavelength LED and fluorescent glue combine to send white light; The second wavelength LED; Be used to adjust colour temperature and color rendering index, it is characterized in that, the operating current of the second wavelength LED is less than the operating current of the first wavelength LED.
2. LED matrix according to claim 1 is characterized in that, the operating current of the said second wavelength LED is 0.2 times～0.6 times of the first wavelength LED operating current.
3. LED matrix according to claim 1 and 2 is characterized in that, the said first wavelength LED is a blue-ray LED, and the said second wavelength LED is a red-light LED.
4. LED matrix according to claim 3 is characterized in that said LED matrix comprises a plurality of white light LEDs, when said blue-ray LED and red-light LED have independently positive and negative electrode,
The circuit employing series system of said a plurality of white light LEDs is specially blue-ray LED and blue-ray LED is composed in series circuit, and red-light LED and red-light LED are composed in series circuit; Or
A plurality of blue-ray LED connection in series-parallel built-up circuits in said a plurality of white light LEDs, a plurality of red-light LED connection in series-parallel built-up circuits.
5. LED matrix according to claim 3 is characterized in that said LED matrix comprises a plurality of white light LEDs, when said blue-ray LED and red-light LED have public pole,
A plurality of blue-ray LEDs or red-light LED compose in parallel circuit in said a plurality of white light LEDs.
6. according to claim 4 or 5 described LED matrixs, it is characterized in that adopting direct current or high-frequency pulse current is said LED matrix power supply, through regulating impulse duty ratio and current amplitude control luminosity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100722297A CN102543989A (en) | 2012-03-19 | 2012-03-19 | LED(light-emitting diode)device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100722297A CN102543989A (en) | 2012-03-19 | 2012-03-19 | LED(light-emitting diode)device |
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| CN102543989A true CN102543989A (en) | 2012-07-04 |
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| CN2012100722297A Pending CN102543989A (en) | 2012-03-19 | 2012-03-19 | LED(light-emitting diode)device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282672A (en) * | 2013-07-03 | 2015-01-14 | 云光科技股份有限公司 | Color temperature adjustable type light-emitting diode packaging structure |
| CN110416195A (en) * | 2018-04-28 | 2019-11-05 | 合肥彩虹蓝光科技有限公司 | A kind of car light lamp bead synthetic method and a kind of lamp bead synthesize LED support |
| WO2020156130A1 (en) * | 2019-02-01 | 2020-08-06 | 靳鹏 | Method for simulating cie standard illuminant using multi-channel leds and illumination system |
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2012
- 2012-03-19 CN CN2012100722297A patent/CN102543989A/en active Pending
Patent Citations (7)
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| WO2007078091A1 (en) * | 2005-12-30 | 2007-07-12 | Seoul Semiconductor Co., Ltd. | Light emitting apparatus |
| CN200986118Y (en) * | 2006-12-08 | 2007-12-05 | 杨刚 | Double source integrated mining LED lamp |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282672A (en) * | 2013-07-03 | 2015-01-14 | 云光科技股份有限公司 | Color temperature adjustable type light-emitting diode packaging structure |
| CN110416195A (en) * | 2018-04-28 | 2019-11-05 | 合肥彩虹蓝光科技有限公司 | A kind of car light lamp bead synthetic method and a kind of lamp bead synthesize LED support |
| WO2020156130A1 (en) * | 2019-02-01 | 2020-08-06 | 靳鹏 | Method for simulating cie standard illuminant using multi-channel leds and illumination system |
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Application publication date: 20120704 |