WO2007111118A1 - 発光装置 - Google Patents
発光装置 Download PDFInfo
- Publication number
- WO2007111118A1 WO2007111118A1 PCT/JP2007/054889 JP2007054889W WO2007111118A1 WO 2007111118 A1 WO2007111118 A1 WO 2007111118A1 JP 2007054889 W JP2007054889 W JP 2007054889W WO 2007111118 A1 WO2007111118 A1 WO 2007111118A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluorescent
- light
- particles
- light emitting
- fine particles
- Prior art date
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
- H10H20/8512—Wavelength conversion materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces
- H05B33/22—Light sources with substantially two-dimensional [2D] radiating surfaces characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/858—Means for heat extraction or cooling
- H10H20/8583—Means for heat extraction or cooling not being in contact with the bodies
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/071—Connecting or disconnecting
- H10W72/075—Connecting or disconnecting of bond wires
- H10W72/07551—Connecting or disconnecting of bond wires characterised by changes in properties of the bond wires during the connecting
- H10W72/07554—Connecting or disconnecting of bond wires characterised by changes in properties of the bond wires during the connecting changes in dispositions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
- H10W72/50—Bond wires
- H10W72/541—Dispositions of bond wires
- H10W72/547—Dispositions of multiple bond wires
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W74/00—Encapsulations, e.g. protective coatings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/756—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink
Definitions
- the present invention relates to a light emitting device including a semiconductor light emitting element and fluorescent particles that emit light by light emitted from the semiconductor light emitting element.
- a light-emitting device called a white LED intended to emit white light is configured by combining a blue LED chip and a phosphor that emits yellow light.
- the blue LED chip is formed of a pn-bonded chemical semiconductor mainly composed of GaN (gallium nitride), and emits blue light having a wavelength of, for example, 560 nm or less when a forward current is applied.
- the phosphor emits yellow light using light of a wavelength emitted from a blue LED chip as excitation light, and a YAG (yttrium, aluminum, garnet) phosphor is generally used.
- a white LED emits white light by combining blue light and yellow light, which are in a complementary color relationship. This white LED not only reduces power consumption by about 30% compared to fluorescent lamps, but also has excellent environmental adaptability because it does not use mercury like fluorescent lamps. Therefore, white LEDs are being adopted for backlights of various display devices and simple lighting fixtures.
- Patent Document 1 Japanese Patent Laid-Open No. 2005-41941
- Patent Document 2 Japanese Patent Laid-Open No. 2005-41942
- the YAG phosphor absorbs light emitted by the blue LED chip force and emits yellow light when excited by the light.
- the luminous efficiency due to the fluorescence action depends on the ambient temperature.
- the luminous efficiency is greatly reduced, especially at ambient temperatures around 100 ° C or higher.
- white LEDs are desired to have a high output of light emission, they tend to be blue and the power supplied to the ED chip tends to increase. Therefore, the blue LED chip
- the temperature when light is emitted increases, and the luminous efficiency of the YAG phosphor tends to decrease.
- the luminous efficiency of the YAG phosphor decreases, the balance between the amount of light emitted from the blue LED chip and the amount of light emitted from the YAG phosphor is lost, and the wavelength of the light emitted from the white LED moves toward the blue side. It becomes easy to shift. As a result, for example, when used as a backlight of a display device, the color balance to be expressed by the display device is lost.
- the white LED emits light that feels bluish and cold, making it difficult to use as a lighting fixture, for example.
- the present invention solves the above-described conventional problems, suppresses a decrease in the luminous efficiency of the phosphor when the use environment temperature rises, and suppresses the color of light emitted from the semiconductor light-emitting element, and the fluorescence. It is an object of the present invention to provide a light-emitting device that can suppress a large change in emission color synthesized with the color of light emitted by physical strength.
- the present invention relates to a light emitting device having a semiconductor light emitting element, an electrode for energizing the semiconductor light emitting element, and a fluorescent layer covering a light emitting side of the semiconductor light emitting element.
- the fluorescent layer has fluorescent particles that emit light by light emitted from the semiconductor light emitting element, and a plurality of transparent fine particles attached to the outside of the fluorescent particles, and a gap between the fluorescent particles and the fine particles and fine particles An air layer is formed in the gap between them.
- a plurality of fine particles adhere to the outside of the fluorescent particles, and a plurality of air layers (preferably a completely sealed air layer in a closed space) are formed around the fluorescent particles. ing.
- the air layer functions as a heat insulating layer, even if the use environment temperature increases, the temperature rise of the fluorescent particles can be suppressed, and the decrease in the luminous efficiency of the fluorescent particles can be suppressed. For this reason, it is possible to suppress fluctuations in the emission color in which the color of the light emitted from the semiconductor light emitting element and the color of the light emitted from the fluorescent particles are combined.
- the air layer has a spatial distance of lOOnm or less. Since the mean free path of nitrogen under atmospheric pressure is about lOOnm or slightly shorter than that, the spatial distance of the air layer By making the length shorter than the mean free path, the heat insulation effect of the air layer can be enhanced.
- the spatial distance of the air layer is more preferably 80 nm or less.
- the fluorescent particles having the fine particles attached to the outside are preferably aggregated.
- the fluorescent layer is composed of a transparent synthetic resin, the fluorescent particles, and the fine particles.
- the synthetic resin include epoxy resin, polyallylamine (PAA), and silicone resin.
- the fluorescent particles, the fine particles, and the fine particles are bonded to each other with an intermolecular bonding force to which mechanical energy is applied.
- the semiconductor light emitting element emits blue light
- the fluorescent particles emit yellow light
- the light-emitting device of the present invention is such that the balance of the luminescent color is not easily lost even when the use environment temperature is high. In addition, it is possible to suppress an increase in the color temperature of emitted light even when the use environment temperature is high.
- FIG. 1 is an enlarged cross-sectional view showing a light-emitting device 1 according to an embodiment of the present invention
- FIG. 2 is an enlarged cross-sectional view of a semiconductor light-emitting element 10 mounted on the light-emitting device 1.
- the light emitting device 1 has a chip-like semiconductor light emitting element 10.
- the semiconductor light emitting device 10 is formed by a thin film process. As shown in FIG. 2, this semiconductor light emitting device 10 has a GaN (gallium nitride) buffer layer (not shown) formed thinly on the surface of a sapphire substrate 11, and an n-type buffer layer is formed on the buffer layer.
- a contact layer 12 is formed.
- the n-type contact layer 12 is a GaN layer doped with Si (silicon), and its thickness is about 4 / im.
- an n-type cladding layer 13 is formed in close contact.
- the n-type cladding layer 13 is formed of AlGaN or formed of AlGaN and Si-doped n-type GaN. The thickness is about 1.0 / im.
- An active layer 14 is formed in close contact with the surface of the n-type cladding layer 13.
- This active layer 14 is formed of n-type InGaN (indium gallium 'nitrogen) or a laminated film of Si-doped n-type I NGaN and InGaN, and the total film thickness is about 400 angstroms. is there.
- a p-type cladding layer 15 is formed in close contact with the surface of the active layer 14.
- the p-type cladding layer 15 is made of AlGaN (aluminum / gallium / nitrogen), or is made of AlGaN and GaN, and has a thickness of about 0.5 ⁇ m. Further, a p-type contact layer is formed on the surface of the p-type cladding layer 15 (not shown).
- a part of the n-type contact layer 12 is exposed to the side of the semiconductor light emitting element 10, and an n-electrode 16 is formed on the surface of the exposed part of the n- type contact layer 12 described above. .
- a p-electrode 17 is formed on the surface of the p-type contact layer at a position avoiding the light emitting region.
- the n electrode 16 and the p electrode 17 are formed of Ni / Ag (nickel and gold laminate).
- the semiconductor light emitting device 10 when a positive potential is applied to the p electrode 17 and a forward current is applied to the pn junction semiconductor light emitting device 10, free electric charge that is a negative charge of the n-type cladding layer 13 is obtained.
- the light and free holes in the p-type cladding layer 15 recombine in the active layer 14 and emit light with the energy at that time.
- the wavelength of light emitted from the semiconductor light-emitting element 10 mainly composed of GaN is 530 nm or less, and power capable of emitting light in the green to blue band and further to the ultraviolet band. In this embodiment, the wavelength is 160 to Emits blue light of 470nm.
- a transparent electrode such as ITO may be formed as a p-type electrode on the surface of the p-type cladding layer or the surface of the p-type contact layer covering the p-type cladding layer.
- a heat radiating member 3 is provided on the surface of the package substrate 2.
- the heat radiating member 3 is made of a material having high thermal conductivity such as aluminum or copper.
- the chip-shaped semiconductor light emitting element 10 is placed on and adhered to the surface of the heat radiating member 3.
- the heat radiating member 3 and the semiconductor light emitting element 10 are covered with a package material 4.
- the package material 4 has high heat resistance and is an electrically insulating material, and is made of, for example, aluminum nitride (A1N).
- a pair of lead terminals 5 and 6 are formed in the package material 4 from the surface of the package substrate 2.
- One lead terminal 5 and the n electrode 16 of the semiconductor light emitting element 10 are connected by wire bonding 7, and the other lead terminal 6 and half
- the p-electrode 17 of the conductor light emitting element 10 is connected by wire bonding 8.
- the package material 4 also serves as a reflector, and its surface is a reflective surface 4a.
- the reflecting surface 4a is formed so that the opening area gradually increases in the light emitting direction.
- a fluorescent layer 20 that covers the semiconductor light emitting element 10 is provided on the reflective surface 4a.
- the fluorescent layer 20 is configured by mixing fluorescent particles 21 in a transparent synthetic resin material such as epoxy resin, polyallylamine (PAA), or silicone resin.
- a transparent synthetic resin material such as epoxy resin, polyallylamine (PAA), or silicone resin.
- the fluorescent particles 21 constitute an aggregate in which a plurality of fluorescent particles 21 are aggregated, and a plurality of the aggregates are mixed in the synthetic resin material. Note that a part of the fluorescent particles 21 may be present alone in the synthetic resin material.
- the fluorescent particles 21 absorb light emitted from the semiconductor light emitting element 10, and internal molecules are excited by the absorbed light to emit light having a wavelength different from that of the absorbed light.
- the fluorescent particles 21 are YAG phosphors (yttrium, aluminum, garnet), and are excited by the light emitted from the semiconductor light emitting element 10 to emit yellow light.
- the average particle diameter of the fluorescent particles 21 is about 5 to 20 ⁇ m.
- Transparent fine particles 22 adhere to the outside of the individual fluorescent particles 21.
- Transparent fine particles 22 consist of silica (SiO 2), titanium oxide (TiO 2), aluminum
- the average particle size is 200 nm or less and 50 nm or more.
- the fine particles 22 are adhered to the outer periphery of the fluorescent particles 21 in a plurality of layers.
- the bonding between the fine particles 22 and the fluorescent particles 21 and the bonding between the fine particles 22 are mechanical bonding or mechanical / chemical bonding. In mechanical bonding, for example, a large number of fluorescent particles 21 and a large number of fine particles 22 are mixed and stirred while applying a frictional force to bond the fluorescent particles 21, the fine particles 22, and the fine particles 22 with intermolecular bonding forces. It is something to be made.
- FIG. 5 schematically shows an enlarged view of the joint between the fluorescent particles 21 and the fine particles 22.
- a plurality of air layers 23 are formed in the gaps between the fluorescent particles 21 and the fine particles 22 and in the gaps between the fine particles 22.
- the plurality of air layers 23 function as heat insulating layers, and can suppress the temperature of the fluorescent particles 21 from rising when the external temperature rises.
- the mean free path of nitrogen molecules under atmospheric pressure (1 atm) is about 100 ⁇ m or slightly shorter.
- the ratio of the air layer 23 having the maximum spatial distance ⁇ max of lOOnm or less to the number of all air layers 23 is preferably 50% or more80. More preferably, it is at least / ⁇ . In addition, 50. / ⁇ or more or 80. More preferably, the maximum spatial distance ⁇ max of the air layer 23 occupying more than / ⁇ is 80 nm or less.
- the synthetic resin material is cured and the fluorescent layer 20 is formed.
- the proportion of the phosphor particles 21 and the fine particles 22 is preferably about 20 to 50 Vol% in volume ratio.
- the semiconductor light emitting element 10 when a voltage is applied between the lead terminal 5 and the lead terminal 6 and a forward current is applied to the semiconductor light emitting element 10, blue or blue light is emitted from the semiconductor light emitting element 10. It is done. In this embodiment, blue light having a wavelength in the range of 460 to 470 nm is emitted.
- the fluorescent particles 21 absorb the light and are excited by the light to emit yellow or yellow light. The blue or blue light that passes through the synthetic resin material layer and the yellow or yellow light emitted from the fluorescent particles 21 are combined to produce white or white light from the light emitting device 1. Is emitted.
- the semiconductor light emitting device 10 When a relatively large current is applied to the semiconductor light emitting device 10 in order to emit high output light, the semiconductor light emitting device 10 generates heat, and this heat is applied to the fluorescent layer 20. In addition to this, when the use environment temperature becomes high, the fluorescent layer 20 becomes high temperature. It is made of YAG phosphor etc. As the temperature rises, the luminous efficiency of the fluorescent particles 21 decreases, and as a result, the light emitted from the light emitting device 1 is less than the amount of light emitted from the semiconductor light emitting element 10. As the amount decreases, the chromaticity and color temperature of the combined light tend to fluctuate. However, in the light emitting device 1, as shown in FIGS.
- the rise can be suppressed.
- the fluorescent particles 21 are aggregated in the fluorescent layer 20, an increase in the temperature of the fluorescent particles 21 can be suppressed. Therefore, a decrease in the light emission efficiency of the fluorescent particles 21 can be suppressed, and fluctuations in the chromaticity and color temperature of the light emitted from the light emitting device 1 can be suppressed.
- the semiconductor light emitting element 10 that emits blue light in the range of 460 to 470 nm was used.
- the fluorescent particles 21 used were YAG phosphors having an average particle diameter of 8 ⁇ m, and the fine particles were silica (SiO 2) having an average particle diameter of 0 ⁇ ⁇ . Hosokawa Micron Corporation
- Fluorescent particles 21 and fine particles 22 were combined using a “fine particle combining device (model: NC—LAB—P)” manufactured by Komatsu.
- FIG. 5 schematically shows a state in which five layers of fine particles 22 are attached to the outer periphery of the fluorescent particles 21.
- (1) in Fig. 5 is the fine particles 22 in the first layer
- (2), (3), (4) and (5) are the fine particles 22 in the second, third, fourth and fifth layers, respectively. .
- Fluorescent particles 21 having fine particles 22 adhering to the outer periphery are mixed in an epoxy resin before curing and stirred by a ball mill, and then a stirring fluid is potted on the surface of the semiconductor light-emitting element 10 and epoxy resin is heat-treated.
- the resin was cured to form the fluorescent layer 20.
- the ratio of the fluorescent particles 21 and the fine particles 22 in the mixed liquid of the epoxy resin before curing and the fluorescent particles 21 and the fine particles 22 was 50 wt%.
- most of the fluorescent particles 21 are aggregated with each other. I was able to confirm.
- the thickness dimension from the light emitting surface of the semiconductor light emitting element 10 to the surface of the fluorescent layer 20 was 100 ⁇ .
- a fluorescent layer was formed only with an epoxy resin and fluorescent particles without attaching the fine particles 22 to the fluorescent particles 21 as a comparative example.
- the proportion of the fluorescent particles 21 in the mixed fluid of the epoxy resin and the fluorescent particles 21 was the same as in the above example.
- the thickness of the fluorescent layer was also the same as in the example.
- a forward current of imAj “5 mA”, “20 mA”, “50 mA”, and “100 mA” is applied to the light emitting devices of the example and the comparative example, and on the color coordinates of light emitted from the example and the comparative example at each current value. Changes were measured with a colorimeter.
- FIG. 6 shows the evaluation results obtained by the evaluation method A
- FIG. 7 shows the evaluation results obtained by the evaluation method B.
- the black triangle indicates the measurement result of the chromaticity of the example
- the small black circle indicates the evaluation result of the chromaticity of the comparative example.
- FIG. 6 and FIG. 8 are chromaticity diagrams in which the horizontal axis is X and the vertical axis is Y.
- Figure 8 shows the entire chromaticity diagram for reference.
- the coordinate position of the color of each wavelength is shown.
- the area surrounded by the broken line on the lower left side of the center is the white area.
- the color temperature in white and white systems is indicated by radiation.
- the color temperature is indicated by K (Kelvin). When the color temperature is high, it becomes white or white with a cold feeling, and when the color temperature is low, it becomes white or white with a warm feeling.
- the color change of light when the current value is changed is wide in the comparative example, but is narrow in the example. Also in the example, the current It can be seen that the brightness changes slightly as the value increases. However, the coordinate direction in which the color changes in the embodiment is the direction in which the color temperature does not change, or the color temperature becomes slightly lower as the current is increased.
- the semiconductor light emitting device when used by applying a large current, it is possible to suppress the change in the color temperature of the emitted color in the direction in which the color temperature increases, and light that feels cold is emitted. Can be suppressed.
- the variation range of the example is lower than that of the comparative example with respect to the variation in the color coordinates of the emission color when the use environment temperature is changed.
- FIG. 1 is a cross-sectional view showing a light emitting device according to an embodiment of the present invention.
- FIG. 2 is an enlarged cross-sectional view showing a semiconductor light emitting element used in the light emitting device of the embodiment
- FIG. 3 is an explanatory diagram schematically showing a state in which fluorescent particles and fine particles are aggregated
- FIG. 4 is an explanatory diagram schematically showing a state in which a plurality of fine particles are attached to the outer periphery of the fluorescent particle.
- FIG. 5 is an enlarged explanatory view schematically showing a state where a fine particle force layer is adhered to the outer periphery of the fluorescent particle.
- FIG. 8 Explanatory diagram relating to the chromaticity diagrams of FIG. 7 and FIG.
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Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112007000734T DE112007000734T5 (de) | 2006-03-28 | 2007-03-13 | Lichtemissionsvorrichtung |
| CN2007800111445A CN101410995B (zh) | 2006-03-28 | 2007-03-13 | 发光装置 |
| US12/211,362 US20090015135A1 (en) | 2006-03-28 | 2008-09-16 | Light emitting device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006089026A JP4213168B2 (ja) | 2006-03-28 | 2006-03-28 | 発光装置 |
| JP2006-089026 | 2006-03-28 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US12/211,362 Continuation US20090015135A1 (en) | 2006-03-28 | 2008-09-16 | Light emitting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007111118A1 true WO2007111118A1 (ja) | 2007-10-04 |
Family
ID=38541039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/054889 Ceased WO2007111118A1 (ja) | 2006-03-28 | 2007-03-13 | 発光装置 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090015135A1 (ja) |
| JP (1) | JP4213168B2 (ja) |
| CN (1) | CN101410995B (ja) |
| DE (1) | DE112007000734T5 (ja) |
| TW (1) | TW200738845A (ja) |
| WO (1) | WO2007111118A1 (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010032732A (ja) * | 2008-07-28 | 2010-02-12 | Panasonic Corp | 液晶表示装置 |
| JP5777242B2 (ja) | 2010-06-29 | 2015-09-09 | 株式会社日本セラテック | 蛍光体材料および発光装置 |
| TW201200580A (en) * | 2010-06-29 | 2012-01-01 | Nihon Ceratec Co Ltd | Fluorescent substance material and light-emitting device |
| CN103824852A (zh) * | 2014-03-10 | 2014-05-28 | 沈阳利昂电子科技有限公司 | 嵌入裸芯片背光源结构 |
| US10442987B2 (en) * | 2017-08-31 | 2019-10-15 | Nichia Corporation | Fluorescent member, optical component, and light emitting device |
| CN111279228B (zh) * | 2017-10-19 | 2022-01-07 | 松下知识产权经营株式会社 | 波长转换体 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003046141A (ja) * | 2001-07-31 | 2003-02-14 | Nichia Chem Ind Ltd | 発光装置とその製造方法 |
| JP2003243727A (ja) * | 2001-12-14 | 2003-08-29 | Nichia Chem Ind Ltd | 発光装置 |
| JP2005079540A (ja) * | 2003-09-03 | 2005-03-24 | Matsushita Electric Works Ltd | 発光素子及びその製造方法 |
| JP2006245020A (ja) * | 2005-02-28 | 2006-09-14 | Sharp Corp | 発光ダイオード素子とその製造方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005041941A (ja) | 2003-07-24 | 2005-02-17 | Mitsubishi Chemicals Corp | 発光物質及びその製造方法、発光物質を用いた発光装置、並びに発光装置を用いた照明装置、画像表示装置 |
| JP2005041942A (ja) | 2003-07-24 | 2005-02-17 | Mitsubishi Chemicals Corp | 発光物質及びそれを用いた発光装置、並びに発光装置を用いた照明装置、画像表示装置 |
| JP4458804B2 (ja) * | 2003-10-17 | 2010-04-28 | シチズン電子株式会社 | 白色led |
| JP4880887B2 (ja) * | 2004-09-02 | 2012-02-22 | 株式会社東芝 | 半導体発光装置 |
-
2006
- 2006-03-28 JP JP2006089026A patent/JP4213168B2/ja not_active Expired - Fee Related
-
2007
- 2007-03-03 TW TW096107404A patent/TW200738845A/zh not_active IP Right Cessation
- 2007-03-13 WO PCT/JP2007/054889 patent/WO2007111118A1/ja not_active Ceased
- 2007-03-13 CN CN2007800111445A patent/CN101410995B/zh not_active Expired - Fee Related
- 2007-03-13 DE DE112007000734T patent/DE112007000734T5/de not_active Withdrawn
-
2008
- 2008-09-16 US US12/211,362 patent/US20090015135A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003046141A (ja) * | 2001-07-31 | 2003-02-14 | Nichia Chem Ind Ltd | 発光装置とその製造方法 |
| JP2003243727A (ja) * | 2001-12-14 | 2003-08-29 | Nichia Chem Ind Ltd | 発光装置 |
| JP2005079540A (ja) * | 2003-09-03 | 2005-03-24 | Matsushita Electric Works Ltd | 発光素子及びその製造方法 |
| JP2006245020A (ja) * | 2005-02-28 | 2006-09-14 | Sharp Corp | 発光ダイオード素子とその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007266283A (ja) | 2007-10-11 |
| CN101410995B (zh) | 2010-06-16 |
| CN101410995A (zh) | 2009-04-15 |
| US20090015135A1 (en) | 2009-01-15 |
| TWI347351B (ja) | 2011-08-21 |
| DE112007000734T5 (de) | 2009-05-14 |
| JP4213168B2 (ja) | 2009-01-21 |
| TW200738845A (en) | 2007-10-16 |
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