WO2007023807A1 - 発光装置とそれを用いたバックライトおよび液晶表示装置 - Google Patents
発光装置とそれを用いたバックライトおよび液晶表示装置 Download PDFInfo
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- WO2007023807A1 WO2007023807A1 PCT/JP2006/316400 JP2006316400W WO2007023807A1 WO 2007023807 A1 WO2007023807 A1 WO 2007023807A1 JP 2006316400 W JP2006316400 W JP 2006316400W WO 2007023807 A1 WO2007023807 A1 WO 2007023807A1
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- Prior art keywords
- light
- reflector
- emitting device
- light emitting
- substrate
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- 239000000758 substrate Substances 0.000 claims abstract description 57
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- NYZGMENMNUBUFC-UHFFFAOYSA-N P.[S-2].[Zn+2] Chemical class P.[S-2].[Zn+2] NYZGMENMNUBUFC-UHFFFAOYSA-N 0.000 description 1
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- 229910007116 SnPb Inorganic materials 0.000 description 1
- LAGXSKLRKCMTRS-UHFFFAOYSA-L [O-]S([O-])(=O)=O.P.[Zn+2] Chemical class [O-]S([O-])(=O)=O.P.[Zn+2] LAGXSKLRKCMTRS-UHFFFAOYSA-L 0.000 description 1
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- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/62—Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01019—Potassium [K]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01025—Manganese [Mn]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01057—Lanthanum [La]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01063—Europium [Eu]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/013—Alloys
- H01L2924/0132—Binary Alloys
- H01L2924/01322—Eutectic Alloys, i.e. obtained by a liquid transforming into two solid phases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
- H01L33/60—Reflective elements
Definitions
- the present invention relates to a light emitting device, a backlight using the light emitting device, and a liquid crystal display device.
- LEDs Light Emitting Diodes
- LED lamps Light emitting devices in which LED elements are sealed with a transparent resin, for example, are portable communication devices, PC peripheral devices, OA devices, household electrical devices, signal devices, various switches, backlight display panels, etc. Widely used as a component of display devices.
- a light emitting device using an LED element has, for example, a structure in which an LED element is fixed on a substrate and each electrode of the LED element is electrically connected to each terminal on the substrate via a conductive wire. is doing.
- a reflector around the LED element that reflects the emitted light.
- the inside of the reflector is filled with, for example, a light emitting layer in which phosphor particles are dispersed (see, for example, Patent Document 1).
- the color tone of the light emitted from the light emitting device is not limited to the emission wavelength of the LED element.
- the phosphor dispersed in the light emitting layer obtains visible light corresponding to the usage from blue to red. be able to.
- white light-emitting devices are useful as knock lights in portable communication devices and PC liquid crystal display devices (see, for example, Patent Document 2).
- a conventional light emitting device in which an LED element and a reflector are installed on a substrate has a drawback that the light emission luminance tends to decrease.
- the conductive wire that extends the electrode force of the LED element is connected to the terminal on the substrate, the reflector cannot be brought close enough to the periphery of the LED element. For this reason, there is a space between the reflector and the LED element by the amount of installation space for the conductive wire. LED element force The emitted light is unnecessarily diffused in the light emitting layer before reaching the reflector, and the light is not sufficiently irradiated to the reflector, so that the emission luminance is lowered.
- a method is considered in which a conductive wire extending the LED element force is connected to a terminal on the substrate located outside the reflector, and the distance between the LED element and the reflector is reduced. It is done.
- the connection portion of the conductive layer is formed outside the reflector, this portion cannot be effectively used for other purposes.
- the conductive wire since the conductive wire must be disposed beyond the upper part of the reflector, the length of the conductive wire becomes long, and the manufacturability and reliability of the light emitting device are reduced.
- Patent Document 1 JP 2002-198573 A
- Patent Document 2 Japanese Patent Laid-Open No. 2003-160785
- An object of the present invention is to provide a light emitting device capable of improving the light emission luminance without reducing manufacturability and reliability, and further a backlight and a liquid crystal display device using such a light emitting device. Is to provide.
- a light-emitting device includes a substrate having internal wiring, a semiconductor light-emitting element disposed on the substrate, a reflector disposed around the semiconductor light-emitting element, and the interior of the reflector And a light-emitting portion containing a phosphor that emits visible light when excited by light from the semiconductor light-emitting element, and is electrically connected to the semiconductor light-emitting element with the internal wiring of the substrate and the reflector. It is characterized by being done through.
- a backlight according to another aspect of the present invention is mounted on a mounting board and the mounting board.
- the light source includes, for example, a plurality of light emitting devices arranged in a linear shape or a matrix shape on a mounting substrate.
- a liquid crystal display device includes the backlight according to the aspect of the present invention and a liquid crystal display unit disposed on the light emitting surface side of the backlight.
- FIG. 1 is a cross-sectional view showing a configuration of a light emitting device according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a modification of the light emitting device shown in FIG.
- FIG. 3 is a cross-sectional view showing another modification of the light emitting device shown in FIG.
- FIG. 4 is a cross-sectional view showing still another modification of the light emitting device shown in FIG.
- FIG. 5 is a cross-sectional view showing still another modification of the light emitting device shown in FIG.
- FIG. 6 is a diagram showing an example of a planar structure of the light emitting device shown in FIG.
- FIG. 7 is a cross-sectional view showing a configuration of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 8 is a cross-sectional view showing a configuration of a light emitting device as a comparative example.
- FIG. 1 is a cross-sectional view showing a configuration of a light emitting device according to an embodiment of the present invention.
- a light emitting device 1 shown in FIG. 1 includes a semiconductor light emitting element 4 disposed on a substrate 3 having an internal wiring 2.
- the semiconductor light emitting element 4 an LED element, a laser diode, or the like can be applied.
- an LED element is used as the semiconductor light emitting element 4.
- a cylindrical reflector 5 having an inner wall inclined toward the light emitting direction is installed.
- One electrode (lower electrode Z not shown) of the LED element 4 is electrically connected to the internal wiring 2 of the substrate 3.
- the other electrode (upper electrode Z not shown) of the LED element 4 is electrically connected to the reflector 5 via a wire bonded conductive wire 6.
- the reflector 5 is filled with a light emitting portion 7 containing a phosphor so as to seal the LED element 4.
- the distance (L) between the LED element 4 and the reflector 5 can be reduced.
- the distance (L) between the LED element 4 and the reflector 5 is the distance between the outer peripheral part 8 of the LED element 4 and the innermost part of the reflecting surface 9 of the reflector 5, as shown in FIG. .
- the distance (L) between the LED element 4 and the reflector 5 By reducing the distance (L) between the LED element 4 and the reflector 5, the light emitted from the LED element 4 can be applied to the reflector 5 without unnecessarily diffusing in the light emitting section 7. The Therefore, the light emission luminance of the light emitting device 1 can be increased.
- wire bonding can be performed only at one position between the LED element 4 and the reflector 5. In addition to eliminating the need for wire bonding at multiple locations, for example, the distance of wire bonding can be shortened compared to connecting to the outside of the reflector 5. Therefore, it becomes possible to improve the manufacturability and reliability of the light emitting device 1.
- the conductive wire 6 extending to the LED element 4 force to the reflector 5
- the size can be the same as the size of the reflector 5. Since it is not necessary to form a connection portion of the conductive wire 6 outside the reflector 5, this portion can be effectively used for other purposes.
- a reflective sheet can be disposed in that portion.
- the reflecting sheet has a function of re-reflecting this light toward the optical sheet. As a result, the emission brightness of the knocklight can be increased.
- the distance (L) between the LED element 4 and the reflector 5 is preferably lm m or less. If the distance (L) between the LED element 4 and the reflector 5 exceeds 1 mm, the light emitted from the LED element 4 may be diffused unnecessarily in the light emitting part 7 and the reflector 5 may not be sufficiently irradiated. There is. As a result, the light emission luminance decreases. Since the wire bonding distance between the LED element 4 and the reflector 5 is also extended, the manufacturability and reliability may be reduced.
- the distance (L) between the LED element 4 and the reflector 5 is more preferably 0.8 mm or less from the viewpoint of improving the light emission luminance and manufacturability.
- the reflector 5 has a cylindrical shape in which a reflection surface 9 is provided on an inner wall portion. have.
- the reflecting surface 9 of the reflector 5 is preferably inclined with respect to the surface of the substrate 3 in order to guide the light emitted from the LED element 4 to the light emitting surface 10.
- the inclination angle 0 of the reflecting surface 9 is preferably 25 ° or more and 70 ° or less. If the inclination angle 0 of the reflecting surface 9 is less than 25 °, the light emission brightness of the light emitting device 1 having a small reflection effect of the light emitted from the LED element 4 may not be sufficiently increased.
- the inclination angle ⁇ force of 70 ° exceeds the reflection surface 9
- the reflection effect becomes too large and light is concentrated.
- the inclination angle ⁇ of the reflecting surface 9 of the reflector 5 is more preferably 30 ° or more and 60 ° or less, more preferably from the viewpoint of improving emission luminance or suppressing luminance unevenness when applied to a backlight. It is between 35 ° and 45 °.
- the upper portion of the reflector 5 shown in FIG. 1 is uniformly horizontal.
- the shape of the reflector 5 is not limited to this.
- the reflector 5 may be one step lower and a step 11 provided on the inner part of the upper part.
- the step portion 11 is provided on the upper portion of the reflector 5, it is preferable that one end portion of the conductive wire 6 is connected to the step portion 11. By doing so, the entire conductive wire 6 can be embedded in the light emitting portion 7.
- At least a part of the reflector 5 is formed of a conductive material because it is necessary to ensure conduction with the LED element 4.
- the reflector 5 shown in FIGS. 1 and 2 is entirely made of a conductive material.
- the constituent material of the reflector 5 it is preferable to use a metal material from the viewpoints of conductivity and light reflectivity.
- the reflector 5 is made of a metal such as nickel, silver, copper, or aluminum or an alloy thereof.
- the reflector 5 may be formed by forming a reflector main body 5a as a main portion with an insulating material and providing a coating 5b made of a conductive material on the surface thereof.
- the coating 5b is preferably made of a metal material from the viewpoint of conductivity and light reflectivity. Examples of the material for forming the coating 5b include metals such as nickel, silver, copper, and aluminum, and alloys thereof.
- the coating 5b made of a metal material is formed by using a known film forming method such as plating, vapor deposition, or sputtering.
- the reflector 5 is formed by forming the reflector main body 5a from an insulating material and providing an internal wiring 5c made of a conductive material therein.
- the substrate 3 on which the LED element 4 is arranged has at least one internal wiring 2 for conducting to the LED element 4 as shown in FIG. 1 and FIG. As shown in Fig. 5, the board 3 has internal wiring (LED internal wiring) 2 for conduction to the LED element 4, and internal wiring (reflector internal wiring) 12 connected to the reflector 5. You may have. In this case, the lower part of the reflector 5 and the internal wiring 12 exposed on the surface of the substrate 3 are electrically connected.
- both ends of the internal wirings 2 and 12 are connected to the LED element 4 and the reflector 5, and the other end is, for example, As shown in FIG. 6, it is pulled out to one end of the substrate 3 and connected to external connection terminals 13 and 14 formed on the surface of the substrate 3, respectively.
- the external connection terminals 13 and 14 may be formed on the back side of the substrate 3. Note that a conductor pattern formed on the substrate 3 may be used for conduction to the reflector 5.
- the substrate 3 is made of, for example, aluminum nitride (A1N), alumina (Al 2 O 3), silicon nitride (Si N)
- Ceramic materials such as 2 3 3 4 are also mainly organic materials such as resin.
- the substrate 3 mainly having an aluminum nitride force excellent in thermal conductivity is preferably used.
- the conductive wire 6 that electrically connects the LED element 4 and the reflector 5 for example, a metal such as gold, white gold, copper, aluminum, or a metal wire having an alloy power thereof is used. In particular, it is preferable to use a wire having gold or its alloy strength.
- a metal wire as the conductive wire 6, the LED element 4 and the reflector 5 can be easily connected.
- the connection (bonding) of the conductive wire 6 to the electrode of the LED element 4 and the reflector 5 can be performed directly when using a material that is easily alloyed. When using a material that is difficult to be alloyed, bonding is performed via the material to be alloyed.
- the LED element 4 for example, an element that emits ultraviolet light or violet light having a wavelength in the range of 360 nm to 440 nm is preferably used.
- Examples of such an LED element 4 include those having a nitride-based compound semiconductor layer as a light emitting layer.
- the light emitting section 7 is preferably configured by including a three-color phosphor in which blue, green, and red phosphors are mixed in a transparent resin.
- the transparent resin for example, acrylic resin, silicone resin, and epoxy resin are used. The phosphor is excited by light emitted from the LED element 4 (for example, ultraviolet light or violet light) and emits visible light.
- the tricolor phosphor When LED element 4 that emits ultraviolet light or violet light is used in combination with light emitting part 7 that contains tricolor phosphor, the tricolor phosphor is excited by ultraviolet light or violet light emitted from LED element 4. Emits white light.
- the phosphor emits light from LED element 4 with a wavelength of 360 ⁇ ! Those that efficiently absorb ultraviolet light and violet light in the range of ⁇ 440 nm are preferred. In this way, the white light emitting device 1 can be configured.
- the light emitting device 1 of this embodiment is preferably a white light emitting type.
- Examples of the blue light-emitting phosphor include Eu-activated halophosphate phosphor and Eu-activated aluminate phosphor, which are excellent in absorption efficiency of ultraviolet rays and violet light.
- Examples of the green light emitting phosphor include Cu and A1-activated zinc sulfate phosphor, Eu and Mn activated aluminate phosphor, and the like.
- Examples of the red light emitting phosphor include Eu-activated yttrium oxysulfide phosphor, Eu and Sm-activated lanthanum oxysulfide phosphor, Cu and Mn-activated zinc sulfide phosphor, and the like. These are appropriately selected and used in consideration of color rendering properties, light emission uniformity, and luminance characteristics.
- the phosphor content in the light-emitting portion 7 is preferably 20 wt% or more.
- the phosphor content is kept low in order to irradiate the reflector without unnecessarily diffusing the light emitted by the LED element force in the light-emitting portion.
- the phosphor content is lowered, the essential light emission luminance is lowered.
- the distance between the LED element 4 and the reflector 5 is reduced, so that the light emitted from the LED element 4 is transmitted in the light-emitting part 7. It is possible to irradiate the reflector 5 without diffusing unnecessarily. Therefore, it is possible to improve the light emission luminance of the light emitting device 1 without reducing the manufacturability and reliability of the light emitting device 1.
- the light emitting device 1 of this embodiment is manufactured, for example, as follows.
- the manufacture of the light emitting device 1 shown in FIG. 1 will be described as an example.
- a substrate 3 having an internal wiring 2 is prepared.
- an Au—Sn eutectic alloy layer is formed as a bonding material for bonding the LED element 4 on a portion of the substrate 3 where the internal wiring 2 is exposed, that is, on a surface portion where the LED element 4 is to be bonded.
- One electrode of LED element 4 is aligned and disposed on this surface portion, and then heat treatment is performed to fix LED element 4 to substrate 3 and LED
- One electrode of the element 4 is electrically connected to the internal wiring 2 of the substrate 3.
- the bonding material in addition to an Au-Sn eutectic alloy, an Au-Si eutectic alloy, SnPb solder, or the like can be used. Instead of such a low melting point alloy, a conductive paste may be used. Examples of the conductive paste include those obtained by dispersing conductive powders such as silver, copper and carbon in a thermosetting resin such as epoxy resin.
- a cylindrical reflector 5 is joined on the substrate 3 to which the LED element 4 is fixed so as to surround the periphery of the LED element 4.
- the reflector 5 is bonded to the substrate 3 in the same manner as the LED element 4 is bonded.
- a wire bonding step is performed to electrically connect the other electrode of the LED element 4 and the reflector 5 with the conductive wire 6.
- a transparent resin containing a phosphor is dropped into the reflector 5, and the light emitting part 7 is formed by curing the transparent resin. In this manner, the target light emitting device 1 is manufactured.
- the above-described manufacturing method of the light-emitting device 1 is an example, and the manufacturing method of the light-emitting device 1 is not limited to this.
- the manufacturing method of the light emitting device 1 can be changed as appropriate unless it is contrary to the gist of the present invention.
- the reflector 5 may be bonded onto the substrate 3 and the LED element 4 may be bonded with a force.
- an internal wiring 12 (reflector internal wiring) 12 for conducting to the reflector 5 as described above or a conductive pattern may be used as the substrate 3.
- the light-emitting device 1 of this embodiment can be used for various purposes as, for example, a lighting device.
- a typical use example of the light emitting device 1 is a light source of a knock light of various display devices represented by a liquid crystal display device.
- the emission luminance of the knocklight can be improved.
- the knocklight is configured by applying a plurality of light emitting devices 1 as light sources and arranging them in a linear or matrix form. Note that a backlight using only one light emitting device 1 is not excluded.
- a plurality of light emitting devices 1 as light sources are mounted in a linear or matrix arrangement on a mounting substrate.
- the module structure is as follows. A backlight in which a plurality of light emitting devices 1 are linearly arranged is used as a sidelight type backlight or the like. A backlight in which a plurality of light emitting devices 1 are arranged in a matrix is used as a direct backlight.
- the structure of the backlight using Light Emitting Device 1 is special. However, it may be a direct type or a side light type.
- FIG. 7 is a cross-sectional view showing a configuration example of a liquid crystal display device 20 having a backlight to which the light emitting device 1 is applied.
- the liquid crystal display device 20 includes, for example, a flat liquid crystal panel 21 as a flat display unit, and a backlight 22 that illuminates the liquid crystal panel 21 with a back force.
- the backlight 22 is disposed immediately below the liquid crystal panel 21.
- an array substrate which is a glass plate on which transparent electrodes are formed, and a color filter substrate are disposed between two polarizing plates so as to face each other. Liquid crystal is injected between the array substrate and the color filter substrate, thereby forming a liquid crystal layer.
- red (R), green (G), and blue (B) color filters are formed corresponding to each pixel.
- the knock light 22 includes a mounting board (mother board) 23 and a plurality of light emitting devices 1 arranged and mounted on the mounting board 23 in a matrix.
- the specific module structure is as follows.
- Each of the plurality of light emitting devices 1 constitutes a light source of the backlight 22.
- the light emitting device 1 is arranged so that its non-light emitting surface is on the mounting substrate 23 side.
- An optical sheet 24 such as a diffusion plate or a prism sheet is disposed on the light emitting surface 10 side of the light emitting device 1.
- the knock light 22 is arranged immediately below the liquid crystal panel 21 so that the optical sheet 24 is on the liquid crystal panel 21 side.
- the liquid crystal display device of the present invention is not limited to the one using a direct type backlight, but may be one using a side light type knock light.
- the sidelight-type backlight includes, for example, a light source and a light guide plate in which a plurality of light emitting devices 1 are linearly arranged.
- the light source is installed in a light incident portion provided on one end face of the light guide plate.
- the light incident from the light incident portion is irradiated in the normal direction from the upper surface of the light guide plate by repeating refraction and reflection in the light guide plate.
- the liquid crystal display unit is disposed on the upper surface (light emitting surface) side of the light guide plate.
- the white light emitting device 1 shown in FIG. 1 was produced.
- an aluminum nitride substrate 3 with internal wiring 2 as shown in Fig. 1 (length 5 mm x width 5 mm x thickness 0.5 mm).
- a portion of the surface of the aluminum nitride substrate 3 on which the UV LED element 4 is to be joined (including the exposed portion of the internal wiring) is gold-plated, and a light emitting diode (UV-LED element) that emits UV light on this surface part ) 4 (length 0.3mm x width 0.3mm x height 0.3mm) were joined.
- UV-LED element light emitting diode
- the reflector 5 (height lmm, reflecting surface angle ( ⁇ ) 45 °, which is silver-plated oxygen-free copper so as to surround the periphery of the UV-LED element 4) ).
- a plurality of types of reflectors 5 were used so that the distance (L) to the UV-LED element 4 was 0.6 to 1.4 mm (Examples 1 to 5).
- the white phosphor 1 was manufactured by filling the dispersed phosphor paste and heating and curing it.
- a white light emitting device 30 as shown in FIG. 8 was produced.
- an aluminum nitride substrate 32 (length 5 mm ⁇ width 5 mm ⁇ thickness 0.5 mm) provided with a terminal fitting 31 as shown in FIG. 8 was prepared.
- a UV-LED element 33 is bonded to a predetermined portion of the aluminum nitride substrate 32, and a reflector 35 made of oxygen-free copper with a silver plating on the reflecting surface 34 (height lmm, reflecting surface angle ( ⁇ ) 45 °) Were joined.
- each electrode of the UV-LED element 33 and each terminal fitting 31 were electrically connected by a conductive wire 36.
- the reflector 35 is filled with a phosphor paste in which a mixture of a red phosphor, a green phosphor and a blue phosphor excited by ultraviolet rays is dispersed in a transparent resin, and is heated and cured.
- a white light emitting device 30 was produced.
- the distance (L) between the UV-L ED element 33 and the reflector 35 is set to 1.8 mm in order to secure a connection portion between the conductive wire 36 and the terminal fitting 31. .
- the UV-LED element 4 And the distance (L) between the reflector 5 and the reflector 5 can be reduced. Therefore, it is possible to suppress the light emitted from the UV-LED element 4 from being unnecessarily diffused by the phosphor in the light emitting section 7 before reaching the reflecting surface 9 of the reflector 5. For this reason, it was confirmed that the total luminous flux is improved. In particular, it was confirmed that the total luminous flux was greatly improved by setting the distance (L) between the UV-LED element 4 and the reflector 5 to 1 mm or less.
- the angle (0) of the reflecting surface 9 of the reflector 5 is 10 ° as shown in Table 2.
- a direct type backlight was fabricated using 100 pieces each changed in a range of ⁇ 70 °. Each of these direct type backlights was evaluated for luminance unevenness and light emission luminance. Table 2 shows the results.
- the direct type backlight is produced by arranging 100 white light emitting devices in a 10 ⁇ 10 matrix.
- the light emitting surface of the direct type backlight is visually observed to obtain a white light emitting device. Evaluation was based on the degree to which the light of device 1 appeared as dots. In Table 2, “A” is a portion that appears to be dotted, “B” is a portion that appears as a dot, and “C” is a portion that appears as a point. It is. Regarding the light emission luminance, visually observe the light emission surface of the direct type backlight, and the light emission luminance of the direct type backlight is indicated by “A”, and the light emission luminance is slightly insufficient! Is indicated by “B”.
- the angle ( ⁇ ) of the reflecting surface 9 of the reflector 5 is 35 ° or more and 45 ° or less from the viewpoint of suppressing luminance unevenness and improving light emission luminance. I understand.
- the angle (0) of the reflecting surface 9 of the reflector 5 is 10 ° as shown in Table 3.
- Sidelight-type backlights were fabricated using 10 each of which were changed in the range of ⁇ 70 °. The presence or absence of luminance unevenness and light emission luminance of these sidelight type backlights were evaluated. The results are shown in Table 3. The evaluation methods for luminance unevenness and light emission luminance were the same as in Examples 6-10. Note that the sidelight type backlight is manufactured by arranging 10 white light emitting devices at equal intervals.
- the sidelight-type backlight As is apparent from Table 3, in the sidelight-type backlight, the occurrence of uneven brightness was observed regardless of the angle ( ⁇ ) of the reflecting surface 9 of the reflector 5 of the white light emitting device 1. . Since the sidelight type backlight uses a light guide plate, the occurrence of uneven brightness is suppressed regardless of the angle ( ⁇ ) of the reflecting surface 9 of the reflector 5 of the white light emitting device 1. Regarding the emission luminance, it was observed that the emission luminance was lowered when the angle ( ⁇ ) of the reflecting surface 9 of the reflector 5 was less than 35 °. In the white light emitting device 1 used for the sidelight type backlight, it is understood that the angle ( ⁇ ) of the reflecting surface 9 of the reflector 5 is preferably set to 35 ° or more.
- the luminance unevenness is suppressed and the light emission luminance is obtained in any of the direct type backlight and the sidelight type backlight.
- the angle ( ⁇ ) of the reflecting surface 9 of the reflector 5 is set to 30 ° or more and 60 ° or less, Further, it can be seen that the angle is preferably 35 ° or more and 45 ° or less.
- the light emitting device can irradiate the light emitted from the semiconductor light emitting element to the reflector without unnecessarily diffusing in the light emitting portion, and therefore, excellent light emission luminance can be obtained. Furthermore, by reducing the distance and number of wire bonding, the manufacturability and reliability of the light emitting device can be improved. Such a light emitting device is effectively used for various lighting applications including a backlight.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Led Device Packages (AREA)
- Planar Illumination Modules (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2006800300476A CN101248533B (zh) | 2005-08-23 | 2006-08-22 | 发光器件及使用该发光器件的背光源和液晶显示装置 |
JP2007532123A JPWO2007023807A1 (ja) | 2005-08-23 | 2006-08-22 | 発光装置とそれを用いたバックライトおよび液晶表示装置 |
US12/064,519 US7709855B2 (en) | 2005-08-23 | 2006-08-22 | Light-emitting device, backlight using same, and liquid crystal display |
EP06796614.3A EP1919002B1 (en) | 2005-08-23 | 2006-08-22 | Light-emitting device, backlight using same, and liquid crystal display |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005241692 | 2005-08-23 | ||
JP2005-241692 | 2005-08-23 |
Publications (1)
Publication Number | Publication Date |
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WO2007023807A1 true WO2007023807A1 (ja) | 2007-03-01 |
Family
ID=37771550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/316400 WO2007023807A1 (ja) | 2005-08-23 | 2006-08-22 | 発光装置とそれを用いたバックライトおよび液晶表示装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7709855B2 (ja) |
EP (1) | EP1919002B1 (ja) |
JP (1) | JPWO2007023807A1 (ja) |
KR (1) | KR20080037734A (ja) |
CN (1) | CN101248533B (ja) |
TW (1) | TW200727045A (ja) |
WO (1) | WO2007023807A1 (ja) |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001203396A (ja) * | 2000-01-20 | 2001-07-27 | Sanyo Electric Co Ltd | 光照射装置 |
JP2002198573A (ja) | 1996-07-29 | 2002-07-12 | Nichia Chem Ind Ltd | 発光ダイオード |
JP2002232017A (ja) * | 2001-01-30 | 2002-08-16 | Kyocera Corp | 発光素子収納用パッケージおよびその製造方法 |
JP2003160785A (ja) | 2001-11-27 | 2003-06-06 | Toshiba Corp | 赤色発光蛍光体とそれを用いた発光装置 |
JP2004193581A (ja) * | 2002-11-25 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Led照明光源 |
JP2004359842A (ja) * | 2003-06-05 | 2004-12-24 | Fine Rubber Kenkyusho:Kk | 赤色発光蛍光体及び発光装置 |
JP2005223222A (ja) * | 2004-02-06 | 2005-08-18 | Toyoda Gosei Co Ltd | 固体素子パッケージ |
JP2006012868A (ja) * | 2004-06-22 | 2006-01-12 | Toshiba Corp | 半導体発光素子用パッケージおよびそれを用いた半導体発光装置 |
JP2006134975A (ja) * | 2004-11-04 | 2006-05-25 | Hitachi Displays Ltd | 照明装置及びこの照明装置を用いた表示装置 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000277813A (ja) * | 1999-03-26 | 2000-10-06 | Matsushita Electric Works Ltd | 光源装置 |
JP2001210122A (ja) | 2000-01-28 | 2001-08-03 | Matsushita Electric Ind Co Ltd | 照明装置、映像表示装置、映像表示装置の駆動方法、液晶表示パネル、液晶表示パネルの製造方法、液晶表示パネルの駆動方法、アレイ基板、表示装置、ビューファインダおよびビデオカメラ |
JP2001267637A (ja) * | 2000-03-15 | 2001-09-28 | Nippon Aleph Corp | 発光装置 |
JP2001332760A (ja) * | 2000-05-25 | 2001-11-30 | Toyoda Gosei Co Ltd | Iii族窒化物系化合物半導体発光素子 |
JP3844196B2 (ja) * | 2001-06-12 | 2006-11-08 | シチズン電子株式会社 | 発光ダイオードの製造方法 |
US6531328B1 (en) * | 2001-10-11 | 2003-03-11 | Solidlite Corporation | Packaging of light-emitting diode |
US7429757B2 (en) * | 2002-06-19 | 2008-09-30 | Sanken Electric Co., Ltd. | Semiconductor light emitting device capable of increasing its brightness |
CN100352069C (zh) | 2002-11-25 | 2007-11-28 | 松下电器产业株式会社 | Led照明光源 |
JP3948417B2 (ja) * | 2003-02-28 | 2007-07-25 | ノーリツ鋼機株式会社 | 光源ユニット |
EP1605524B1 (en) * | 2003-03-18 | 2010-06-30 | Sumitomo Electric Industries, Ltd. | Light emitting element mounting member, and semiconductor device using the same |
US7095053B2 (en) * | 2003-05-05 | 2006-08-22 | Lamina Ceramics, Inc. | Light emitting diodes packaged for high temperature operation |
US7528421B2 (en) * | 2003-05-05 | 2009-05-05 | Lamina Lighting, Inc. | Surface mountable light emitting diode assemblies packaged for high temperature operation |
TWI253765B (en) * | 2003-05-26 | 2006-04-21 | Matsushita Electric Works Ltd | Light-emitting device |
DE602004020906D1 (de) * | 2003-09-19 | 2009-06-10 | Panasonic Corp | Beleuchtungseinrichtung |
JP4206334B2 (ja) | 2003-12-25 | 2009-01-07 | 京セラ株式会社 | 発光装置 |
KR100586944B1 (ko) * | 2003-12-26 | 2006-06-07 | 삼성전기주식회사 | 고출력 발광다이오드 패키지 및 제조방법 |
DE102004031391B4 (de) * | 2004-06-29 | 2009-06-04 | Osram Opto Semiconductors Gmbh | Elektronisches Bauteil mit Gehäuse zum ESD-Schutz |
JP4711715B2 (ja) * | 2005-03-30 | 2011-06-29 | 株式会社東芝 | 半導体発光装置及び半導体発光ユニット |
KR100703218B1 (ko) * | 2006-03-14 | 2007-04-09 | 삼성전기주식회사 | 발광다이오드 패키지 |
KR100735310B1 (ko) * | 2006-04-21 | 2007-07-04 | 삼성전기주식회사 | 다층 반사 면 구조를 갖는 엘이디 패키지 및 그 제조방법 |
-
2006
- 2006-08-22 JP JP2007532123A patent/JPWO2007023807A1/ja active Pending
- 2006-08-22 KR KR1020087006952A patent/KR20080037734A/ko active Search and Examination
- 2006-08-22 WO PCT/JP2006/316400 patent/WO2007023807A1/ja active Application Filing
- 2006-08-22 EP EP06796614.3A patent/EP1919002B1/en not_active Not-in-force
- 2006-08-22 CN CN2006800300476A patent/CN101248533B/zh not_active Expired - Fee Related
- 2006-08-22 US US12/064,519 patent/US7709855B2/en not_active Expired - Fee Related
- 2006-08-23 TW TW095131003A patent/TW200727045A/zh not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002198573A (ja) | 1996-07-29 | 2002-07-12 | Nichia Chem Ind Ltd | 発光ダイオード |
JP2001203396A (ja) * | 2000-01-20 | 2001-07-27 | Sanyo Electric Co Ltd | 光照射装置 |
JP2002232017A (ja) * | 2001-01-30 | 2002-08-16 | Kyocera Corp | 発光素子収納用パッケージおよびその製造方法 |
JP2003160785A (ja) | 2001-11-27 | 2003-06-06 | Toshiba Corp | 赤色発光蛍光体とそれを用いた発光装置 |
JP2004193581A (ja) * | 2002-11-25 | 2004-07-08 | Matsushita Electric Ind Co Ltd | Led照明光源 |
JP2004359842A (ja) * | 2003-06-05 | 2004-12-24 | Fine Rubber Kenkyusho:Kk | 赤色発光蛍光体及び発光装置 |
JP2005223222A (ja) * | 2004-02-06 | 2005-08-18 | Toyoda Gosei Co Ltd | 固体素子パッケージ |
JP2006012868A (ja) * | 2004-06-22 | 2006-01-12 | Toshiba Corp | 半導体発光素子用パッケージおよびそれを用いた半導体発光装置 |
JP2006134975A (ja) * | 2004-11-04 | 2006-05-25 | Hitachi Displays Ltd | 照明装置及びこの照明装置を用いた表示装置 |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008258413A (ja) * | 2007-04-05 | 2008-10-23 | Rohm Co Ltd | 半導体発光装置 |
US8487525B2 (en) | 2007-05-04 | 2013-07-16 | Seoul Semiconductor Co., Ltd. | Light emitting device including optical lens |
WO2008136619A2 (en) * | 2007-05-04 | 2008-11-13 | Seoul Semiconductor Co., Ltd. | Light emitting device |
WO2008136619A3 (en) * | 2007-05-04 | 2008-12-24 | Seoul Semiconductor Co Ltd | Light emitting device |
JP2008300573A (ja) * | 2007-05-30 | 2008-12-11 | Toshiba Corp | 発光装置 |
JP2009043764A (ja) * | 2007-08-06 | 2009-02-26 | Nichia Corp | 半導体発光素子及びその製造方法 |
JP2009070756A (ja) * | 2007-09-18 | 2009-04-02 | Oki Data Corp | Ledバックライト装置及び液晶表示装置 |
JP2009111068A (ja) * | 2007-10-29 | 2009-05-21 | Nichia Corp | 発光装置 |
US8759866B2 (en) | 2007-10-29 | 2014-06-24 | Nichia Corporation | Light emitting device |
US9465154B2 (en) | 2007-10-29 | 2016-10-11 | Nichia Corporation | Light emitting device |
JP2009231750A (ja) * | 2008-03-25 | 2009-10-08 | Nitto Denko Corp | 光半導体素子封止用樹脂シートおよび光半導体装置 |
JP2011146708A (ja) * | 2010-01-15 | 2011-07-28 | Lg Innotek Co Ltd | 発光素子、バックライトユニット |
JP2012054460A (ja) * | 2010-09-02 | 2012-03-15 | Citizen Electronics Co Ltd | 半導体発光装置 |
JP2017510061A (ja) * | 2014-01-29 | 2017-04-06 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | 封止材で充填した蛍光体変換ledのための浅底反射器カップ |
JP2017094901A (ja) * | 2015-11-24 | 2017-06-01 | カルソニックカンセイ株式会社 | 照明構造 |
Also Published As
Publication number | Publication date |
---|---|
KR20080037734A (ko) | 2008-04-30 |
EP1919002B1 (en) | 2018-07-18 |
TWI345109B (ja) | 2011-07-11 |
EP1919002A1 (en) | 2008-05-07 |
EP1919002A4 (en) | 2011-01-12 |
US7709855B2 (en) | 2010-05-04 |
US20090097233A1 (en) | 2009-04-16 |
CN101248533A (zh) | 2008-08-20 |
CN101248533B (zh) | 2010-06-02 |
TW200727045A (en) | 2007-07-16 |
JPWO2007023807A1 (ja) | 2009-02-26 |
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