WO2014024627A1 - 発光装置および発光装置の製造方法 - Google Patents
発光装置および発光装置の製造方法 Download PDFInfo
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- WO2014024627A1 WO2014024627A1 PCT/JP2013/068966 JP2013068966W WO2014024627A1 WO 2014024627 A1 WO2014024627 A1 WO 2014024627A1 JP 2013068966 W JP2013068966 W JP 2013068966W WO 2014024627 A1 WO2014024627 A1 WO 2014024627A1
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- H01L2224/45138—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po), and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950°C and less than 1550°C
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- H—ELECTRICITY
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Definitions
- the present invention relates to a light emitting device that can be used as a light source for a lighting device and a display device, and a method for manufacturing the same.
- a light emitting device in which a wiring pattern is formed on a substrate and a light emitting chip mounted on the substrate is connected to the wiring pattern by die bonding is known. Further, in such a light emitting device, the alignment of the substrate is required in the die bonding step of the light emitting chip, and therefore an alignment mark is formed on the substrate.
- the alignment mark has been formed by plating at the same time as the wiring pattern.
- the method for forming alignment marks by plating has a problem in that the area of the alignment mark is small, so that the current density at the position where the alignment mark is formed increases during plating, and plating spots are generated in the plating layer. When plating spots are generated, there is a problem that the alignment mark is not recognized well.
- Patent Document 1 discloses a technique for reducing defects due to plating spots by forming an alignment mark integrally with a wiring pattern or forming an alignment mark having a large area.
- Patent Documents 2 and 3 disclose techniques for improving the adhesion between the metal wiring and the insulating substrate by including a glass component in both the metal wiring and the insulating substrate.
- Patent Document 1 avoids an increase in current density at the location of alignment mark formation at the time of plating by reducing the formation of alignment marks having a small area, and reduces plating spots. For this reason, in the plating formation method in the above-mentioned patent document 1, it cannot be formed unless the alignment mark has a certain large area.
- the alignment mark in order to form an alignment mark by plating, a support for passing a current through the alignment mark portion during plating is required as shown in FIG. Since the support body needs to be formed so as not to overlap other wiring patterns or light emitting element arrangement locations, this restricts the arrangement locations of the alignment marks.
- the alignment mark can be formed separately, but a new process such as etching is required.
- FIG. 6 is a top view of the light emitting device 100 when the alignment marks 110 and 111 having a large area are formed in Patent Document 1.
- FIG. 6 is a top view of the light emitting device 100 when the alignment marks 110 and 111 having a large area are formed in Patent Document 1.
- the light emitting device 100 includes a light emitting element forming region 101 and a power feeding pattern 102 formed on both sides thereof. Alignment marks 110 and 111 are formed further outside the power supply pattern 102.
- the light reflecting resin frame 103 is formed so as to surround the periphery of the light emitting element forming region 101 and the power feeding pattern 102, and the region surrounded by the light reflecting resin frame 103 is filled with a sealing resin to fill the light emitting element and the power feeding pattern. 102 is protected.
- the light emitting element formation region 101 is preferably formed so as to cover the alignment marks 110 and 111.
- the alignment marks 110 and 111 are exposed to the region inside the frame without being covered by the light emitting element formation region 101, light is absorbed by the alignment marks 110 and 111, and the light extraction efficiency of the light emitting device 100 is improved. It is because it falls.
- the area of the alignment marks 110 and 111 is large, the formation area of the light-reflecting resin frame 103 also increases, and as a result, there arises a problem that the light-emitting device 100 itself increases in area.
- the present invention has been made in view of the above problems, and provides a light emitting device including an alignment mark having a small area and a high degree of freedom in arrangement without causing defects due to plating spots, and a method for manufacturing the same. It is an object.
- a light-emitting device of the present invention includes a substrate, a light-emitting element disposed on the substrate, a conductor wiring disposed on the substrate, and an alignment disposed on the substrate.
- the alignment mark and the conductor wiring are formed by a printing method.
- the alignment mark is formed by a printing method, it is possible to form an alignment mark that can be satisfactorily read without causing defects due to plating spots. Further, the alignment mark formed by the printing method does not require a support for passing an electric current through the alignment mark portion during plating. For this reason, it is possible to easily form an alignment mark having a small area and a high degree of freedom in arrangement.
- the alignment mark and the conductor wiring are formed by a printing method, the alignment can be formed simultaneously with the conductor wiring, and the manufacturing process is not increased.
- the light-emitting device includes a light-reflecting resin frame formed so as to surround the light-emitting element mounting region, and the alignment mark and the conductor wiring are covered with the light-reflecting resin frame. It can be.
- the alignment mark and the conductor wiring are covered with the light reflecting resin frame, thereby improving the appearance of the light emitting device and preventing the light absorption by the alignment mark and the conductor wiring.
- the light extraction efficiency in can be improved.
- the light emitting device includes a light reflecting resin frame formed so as to surround a mounting region of the light emitting element, the alignment mark is disposed outside the conductor wiring, and the conductor wiring is
- the light reflection resin frame may cover the alignment mark, and the alignment mark may not be covered with the light reflection resin frame.
- the light emitting device includes a light reflecting resin frame formed so as to surround a mounting region of the light emitting element, and a pair of land portions disposed to face the center of the light reflecting resin frame. The land portion is not covered with the light reflecting resin frame.
- the substrate is a ceramic substrate including a glass component
- the conductor wiring and the alignment mark include the same glass component as the glass component contained in the substrate. be able to.
- the glass component in the substrate and the glass component in the alignment mark mutually diffuse in the baking step after the alignment mark is printed. This improves the adhesion of the alignment mark to the substrate. Thereby, peeling of the alignment mark with a small area can be prevented.
- the conductor wiring and the alignment mark contain a large amount of a glass component, and are formed on the first layer and in contact with the substrate, and do not contain a glass component or a glass component. It can be set as the structure which has a two-layer structure with the 2nd layer which is a layer with few.
- the said conductor wiring is a layer which contains many glass components, and is formed on the said 1st layer closely_contact
- the first layer improves the adhesion of the conductor wiring and the alignment mark to the substrate. Furthermore, in the conductor wiring, even if there is mutual diffusion, the second layer having a small glass component (needle crystals of Patent Document 2) is formed, thereby preventing wire peeling in wire bonding or flipping during wire bonding. Due to (adhesion failure), it is possible to reduce the defect that the wire is not attached.
- the land portion for supplying power to the light emitting element contains a lot of glass components, and is formed on the first layer, which is in close contact with the substrate, and contains the glass components. It can be set as the structure which has a two-layer structure with the 2nd layer which is a layer with little or a glass component.
- the second layer is less affected by the mutual diffusion of the glass components, and has the inherent electrical resistivity of the metal, thereby reducing the electrical influence on the light emitting device.
- a method for manufacturing a light-emitting device includes a first step of forming a conductor wiring and an alignment mark on a substrate by a printing method, and the first step.
- a second step of mounting a light emitting element on the substrate while aligning the substrate using an alignment mark, and wire-connecting the mounted light emitting element and the conductor wiring, and mounting of the light emitting element It includes a third step of forming a light reflecting resin frame so as to surround the region, and a fourth step of filling a sealing resin in the region surrounded by the light reflecting resin frame.
- the alignment mark it is possible to easily form an alignment mark having a small area and a high degree of freedom in arrangement, like the light emitting device of the present invention. Further, the alignment can be formed simultaneously with the conductor wiring, and the manufacturing process is not increased.
- the alignment mark is formed by a printing method, it is possible to form an alignment mark that can be satisfactorily read without causing defects due to plating spots. In addition, it is possible to easily form an alignment mark having a small area and a high degree of freedom in arrangement.
- FIG. 1 It is a top view which shows the structural example of the light-emitting device of this invention.
- (A)-(d) is a figure which shows the manufacture procedure of the light-emitting device shown in FIG. It is a top view which shows the other structural example of the light-emitting device of this invention.
- (A) is a top view which shows the other structural example of the light-emitting device of this invention
- (b) is a side view which shows the example which made the conductor wiring 2 layers structure in the said light-emitting device
- (c) is It is a side view which shows the example which made the alignment mark the two-layer structure in the said light-emitting device
- (d) is a side view which shows the example which made the alignment mark the single-layer structure in the said light-emitting device.
- the light-emitting device according to the present invention can be used as a light source for lighting devices and display devices.
- the plan view of FIG. 1 is a top view.
- FIG. 1 is a top view illustrating a configuration example of the light emitting device 10 according to the present embodiment.
- the light emitting device 10 is a light emitting device using a light emitting element (also referred to as a semiconductor light emitting element), and generally includes a substrate 11, a light emitting element 12, a light reflecting resin frame 13, and a sealing resin.
- a light emitting element also referred to as a semiconductor light emitting element
- the substrate 11 is a ceramic substrate having a single layer structure made of ceramic.
- the substrate 11 has a rectangular outer shape when viewed from above.
- the light emitting element 12, the light reflecting resin frame 13, and the sealing resin are provided on one surface (hereinafter referred to as a surface) of the substrate 11.
- the conductor wiring 14, the anode electrode 15 and the cathode electrode 16 as land portions, the alignment mark 18, the polarity mark 19, and the like are directly formed.
- the conductor wiring 14 is an electrode that is electrically connected to the light emitting element 12 by wire bonding, and is a wiring routed for electrical connection.
- the anode electrode 15 and the cathode electrode 16 are electrodes (land portions) for supplying power to the light emitting element 12 and can be connected to an external power source of the light emitting device 10.
- the anode electrode 15 and the cathode electrode 16 are disposed in the vicinity of each corner on the diagonal line on the surface of the substrate 11 (upper left and lower right in FIG. 1). That is, the anode electrode 15 and the cathode electrode 16 are formed as a pair of land portions arranged to face the center of the light reflecting resin frame.
- a protective element may be further formed on the surface of the substrate 11.
- the protection element is formed as a resistance element for protecting the light emitting element 12 from electrostatic withstand voltage, and is formed so as to be connected in parallel with a circuit in which the plurality of light emitting elements 12 are connected in series.
- the protective element can be formed by, for example, a printing resistor or a Zener diode.
- the Zener diode is die-bonded on the wiring pattern and further electrically connected to a desired wiring by wire bonding. Also in this case, the Zener diode is connected in parallel with a circuit in which a plurality of light emitting elements 12 are connected in series.
- the alignment mark 18 is a mark mainly used for alignment of the substrate 11 during the bonding process (die bonding or wire bonding).
- the alignment mark 18 is formed of a metal film so as to have light reflectivity, and the position of the substrate 11 is recognized when a manufacturing apparatus (such as a bonding apparatus) reads the reflected light from the alignment mark 18.
- the polarity mark 19 is a mark for making it possible to visually recognize the polarity of the anode electrode 15 and the cathode electrode 16. For this reason, it is preferable that the polarity mark 19 forms a plus-shaped mark near the anode electrode 15 and a minus-shaped mark near the cathode electrode 16.
- the light emitting element 12 is, for example, a blue light emitting element having an emission peak wavelength of around 450 nm, but is not limited thereto.
- a plurality of light emitting elements 12 (20 in this embodiment) are mounted on the surface of the substrate 11 at predetermined positions that satisfy a predetermined light emission amount. Electrical connection of the light emitting element 12 is performed by wire bonding using the wire 20. For example, a gold wire can be used as the wire 20.
- the light reflecting resin frame 13 reflects light from the light emitting element 12 and prevents light absorption by the conductor wiring 14.
- the light reflecting resin frame 13 also serves as a holding member for the conductor wiring 14.
- the light reflecting resin frame 13 is provided in an annular shape in a top view so as to surround a mounting region in which all the light emitting elements 12 are mounted. Further, since the light reflecting resin frame 13 is formed so as to cover the conductor wiring 14, light absorption by the conductor wiring 14 is prevented. For this reason, when the light reflecting resin frame 13 is formed in an annular shape, the conductor wiring 14 is also formed so as to have a partial arc shape of the annular ring.
- the protective element made of the printing resistor is also formed so as to have a circular arc shape of a part of the circular ring, and light reflection Covered by the resin frame 13.
- the light reflection resin frame 13 can also prevent light absorption by the protection element.
- the light reflecting resin frame 13 is made of, for example, an alumina filler-containing silicone resin, but is not limited thereto, and an insulating resin having light reflecting characteristics may be used.
- the shape of the light reflection resin frame 13, the conductor wiring 14, and the protection element is not limited to the above-described annular shape (arc shape), and may be an arbitrary shape.
- the sealing resin is a sealing resin layer made of a translucent resin, and is formed by being filled in a region surrounded by the light reflecting resin frame 13. That is, the sealing resin is formed on the mounting region of the light emitting element 12, and seals the light emitting element 12, the wire 20, and the like.
- the sealing resin can contain a phosphor.
- a phosphor that is excited by the primary light emitted from the light emitting element 12 and emits light having a longer wavelength than the primary light is used, and is appropriately selected according to desired white chromaticity. be able to.
- daylight white color and light bulb color there are a combination of YAG yellow phosphor and (Sr, Ca) AlSiN 3 : Eu red phosphor, and a combination of YAG yellow phosphor and CaAlSiN 3 : Eu red phosphor.
- the light-emitting device 10 is formed as an integrated unit composed of a plurality of light-emitting device groups, and is formed as an individual light-emitting device by dividing the periphery (four sides) of each light-emitting device by dicing at the end of the manufacturing process. Is done. However, in the following description, for convenience of description, the description and illustration will focus on one light emitting device as appropriate.
- FIGS. 2A to 2D are diagrams showing a manufacturing procedure of the light emitting device 10.
- the conductor wiring 14, a part of the conductive portion for electrically connecting the conductor wiring 14 and the land portion, and the alignment mark 18 are formed on the substrate 11. To do. In the present embodiment, these are formed by a printing method. Specifically, after printing with a gold paste (film thickness of 2 ⁇ m or more), through a drying process and a baking process at 850 ° C. or more, the conductor wiring 14, the conductive portion, and the alignment mark 18 are formed.
- a gold paste film thickness of 2 ⁇ m or more
- the light emitting device 10 is characterized in that the alignment mark 18 is formed by printing. That is, by forming the alignment mark 18 by printing, the problem of uneven plating when forming the alignment mark by plating can be avoided, and an alignment mark that can be well recognized can be formed. In addition, an alignment mark having a small area can be formed at any location without being restricted in arrangement, and light absorption by the alignment mark can be reduced, and light extraction efficiency in the light emitting device 10 can be improved.
- the land portion that is, the anode electrode 15 and the cathode electrode 16
- the conductive portion for electrically connecting the conductor wiring 14 and the land portion are formed by a printing method. Specifically, after printing with a silver (or silver platinum, silver palladium) paste (film thickness of 18 ⁇ m or more), a land part and the conductive part are formed through a drying process and a baking process at 850 ° C. or more.
- the polarity mark 19 is formed by a printing method.
- the polar mark is formed after printing with a gold paste (film thickness of 18 ⁇ m or more), a drying process, and a baking process at 850 ° C. or more. Further, at the time of forming the polarity mark, a symbol indicating the model number of the substrate may be formed at the same time.
- the protective element may be formed on the substrate 11 as a printing resistor by a manufacturing process including printing and baking.
- the paste containing the resistance component is screen-printed at a predetermined position so as to overlap the end of the conductor wiring 14 (partly in contact with the conductor wiring 14).
- the paste is composed of ruthenium dioxide (RuO 2 , ruthenium as a conductive powder), a cohesive agent, a resin, and a solvent.
- a protective element is formed by fixing the printed paste on the substrate 11 by a baking process.
- the conductive powder is not limited to ruthenium and may be any metal or oxide that does not soften below the firing temperature.
- the light emitting element 12 is mounted on the substrate 11. Specifically, first, the light emitting element 12 is die-bonded using an adhesive resin such as a silicone resin. In the present embodiment, 20 light emitting elements 12 are arranged in a region surrounded by the conductor wiring 14.
- the light emitting element 12 is a chip having a rectangular outer shape when viewed from above, and has a thickness of 100 to 180 ⁇ m, for example.
- Two chip electrodes for anode and cathode are provided on the rectangular upper surface of the light emitting element 12 so as to face each other in the longitudinal direction.
- the light emitting elements 12 are arranged substantially in a row. In this embodiment, four light emitting elements 12 are arranged in five rows per row.
- wire bonding is performed using the wire 20.
- wire bonding is performed between the conductor wiring 14 and the chip electrode on the light emitting element 12 arranged adjacent to the conductor wiring 14.
- Adjacent light emitting elements 12 not sandwiching the conductor wiring 14 directly connect both chip electrodes by wire bonding. Thereby, between the anode electrode 15 and the cathode electrode 16, five series circuit parts in which the four light emitting elements 12 are connected in series are connected in parallel.
- the light reflecting resin frame 13 is formed so as to cover the conductor wiring 14. Specifically, for example, using a resin discharge device (not shown), the liquid alumina filler-containing silicone resin is drawn at a predetermined position while being discharged from a nozzle having a round opening. And the light reflection resin frame 13 is formed by performing a heat-hardening process on the conditions of hardening temperature: 120 degreeC and hardening time: 1 hour.
- the curing temperature and the curing time are examples, and are not limited thereto.
- the light reflecting resin frame 13 has a width of 0.9 mm, for example.
- the height of the uppermost portion of the light reflecting resin frame 13 is set to be higher than the height of the upper surface of the light emitting element 12 and higher than the wire 20 (wire loop) connecting the light emitting elements 12. Thereby, it becomes possible to form sealing resin so that the light emitting element 12 and the wire 20 may not be exposed, and it becomes possible to protect these.
- the wire 20 connected to the conductor wiring 14 is covered with the light reflecting resin frame 13. Thereby, it is possible to reduce the peeling of the wire or prevent the peeling of the wire. Further, the land portions (that is, the anode electrode 15 and the cathode electrode 16) are not covered with the light reflecting resin frame 13.
- the alignment mark 18 may be disposed in the formation region of the light reflecting resin frame 13 and the alignment mark 18 may be covered with the light reflecting resin frame 13.
- the alignment mark 18 is covered with the light reflecting resin frame 13 not only the appearance of the light emitting device 10 is improved, but also light absorption by the alignment mark 18 can be prevented and light extraction efficiency can be improved.
- the alignment mark 18 does not necessarily have to be covered with the light reflecting resin frame 13. Even if the alignment mark 18 is not covered by the light reflecting resin frame 13, the light emitting device 10 according to the present embodiment absorbs light by the alignment mark 18 by forming the alignment mark 18 having a small area. Can be minimized.
- a nozzle having a round opening is used for the resin discharge device.
- the present invention is not limited to this.
- a nozzle having an opening that matches the drawing shape of the light reflecting resin frame 13 here, an annular shape
- the resin is discharged from the opening at a time, so that the seamless light reflecting resin frame 13 can be produced in a short time.
- a sealing resin is formed on the substrate 11. Specifically, a phosphor-containing resin obtained by dispersing a phosphor in a liquid translucent resin is injected so as to fill a region surrounded by the light reflecting resin frame 13. After injecting the phosphor-containing resin, it is cured at a predetermined temperature and time. Thereby, the light emitting element 12 and the wire 20 are covered and protected by the sealing resin.
- ⁇ Substrate division process> Finally, this is divided along a dividing line from a single substrate on which a plurality of light emitting devices 10 are formed, and individual light emitting devices 10 are obtained.
- a dividing method there is a method in which the upper part of the dividing groove provided on the back surface of the substrate 11 along the dividing line is sheared from the front surface side by a dividing blade. According to this method, the substrate 11 is cracked along the dividing groove, so that it can be easily divided.
- the light emitting device 10 can be manufactured as a single piece.
- the alignment mark 18 is formed on the inner side of the conductor wiring 14 as in the light emitting device 30 illustrated in FIG. 3. It may be formed.
- the alignment mark 18 is formed outside the conductor wiring 14, it may be better not to cover the alignment mark 18 with the light reflecting resin frame 13. This is because, when the alignment mark 18 is formed outside the conductor wiring 14, if the alignment mark 18 is covered with the light reflecting resin frame 13, the width of the light reflecting resin frame 13 becomes too wide. is there. Further, when the alignment mark 18 is outside the conductor wiring 14, light is not absorbed by the alignment mark 18 even if it is not covered by the light reflecting resin frame 13, and it is not necessary to cover it with the light reflecting resin frame 13. is there.
- the recognition failure can be reduced by arranging the alignment mark 18 inside the conductor wiring 14 (inside the light reflecting resin frame 13). Further, as shown in FIG. 3, when the number of light emitting elements is small, the area of the light emitting element mounting region is small, so that the alignment mark 18 may be outside the conductor wiring 14 (outside the light reflecting resin frame 13). .
- the same identification device can be used regardless of the area of the light emitting element mounting region. For this reason, as in the light emitting device 10 according to the present embodiment, it is extremely important that the alignment mark 18 having a small area can be formed by printing and the arrangement of the alignment mark 18 is free.
- the arrangement of the light emitting elements 12 is different from that of the light emitting device 10 shown in FIG. Specifically, in the light emitting device 10, the arrangement of the light emitting elements 12 in the uppermost row and the lowermost row of the drawing is an arc shape along the shape of the light reflecting resin frame 13.
- column of the light emitting element 12 is a linear array.
- Such an array of light emitting elements can be arbitrarily designed according to the uniformity of light required for the light emitting device.
- the substrate 11 is a ceramic substrate, and the conductor wiring 14, the land portion, and the alignment mark 18 formed by printing are the same as the glass components contained in the substrate 11. It is preferable that the glass component is included. In this case, in the baking process after printing, the glass component in the substrate 11 and the glass component in the conductor wiring 14, the land portion, and the alignment mark 18 are interdiffused. Thereby, the adhesiveness with respect to the board
- the conductor wiring 14 and the alignment mark 18 may have a two-layer structure.
- the first layer that is in close contact with the substrate 11 is a layer having a large glass component, and a metal only (that is, a glass component is not included) or a layer having a small glass component.
- a second layer is formed.
- the surface of the conductor wiring 14 is wire-bonded for electrical connection with the light emitting element 12, it is preferable that the surface of the conductor wiring 14 does not contain a glass component.
- the wire may be stuck poorly).
- the glass component in the surface layer (second layer) of the conductor wiring 14 can be eliminated or reduced, Wire peeling in wire bonding can be prevented.
- the land portion (the anode electrode 15 and the cathode electrode 16) may have a similar two-layer structure.
- the first layer that is in close contact with the substrate 11 side is a layer having a large glass component, and a second layer that is a metal only (that is, not including a glass component) or a layer having a small glass component is formed thereon.
- soldering is performed at the land portion, soldering is improved between the solder and the second layer of the land portion, and defects such as poor soldering are reduced.
- the second layer is less affected by the mutual diffusion of the glass components, and has the inherent electrical resistivity of the metal, thereby reducing the electrical influence on the light emitting device.
- the alignment mark 18 is formed in the same printing process as the conductor wiring 14, it can also have a two-layer structure as shown in FIG. However, unlike the conductor wiring 14, the alignment mark 18 does not need to have an electrical function, and thus may have a single-layer structure (a layer containing a lot of glass components) as shown in FIG. In this case, the alignment mark 18 may be printed at the same time when the first layer of the conductor wiring 14 is printed, and the alignment mark 18 may not be printed when the second layer of the conductor wiring 14 is printed.
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Abstract
Description
(A) アライメントマークの配置の自由度が減る。
(B) アライメントマークを光反射樹脂枠で覆う場合に、当該樹脂枠の幅が広くなり、発光装置の面積が大きくなる。
(C) アライメントマークを分離して、小さいアライメントマークを形成しようとする場合には、エッチングなどの新たな工程が必要となる。
(D) アライメントマークを配線パターンと一体的に形成する場合、アライメントマークが配線パターンの外側に形成され、アライメントマークが外側を向く。
図1は、本実施の形態に係る発光装置10の一構成例を示す上面図である。発光装置10は、発光素子(半導体発光素子とも言う)を用いた発光装置であり、概略的には、基板11、発光素子12、光反射樹脂枠13および封止樹脂を備えている。
次に、上記構成を有する発光装置10の製造方法について説明する。なお、発光装置10は、複数の発光装置群からなる一体ものとして形成され、製造工程の最後に個々の発光装置の周囲(四方)がダイシングにて分割されることで、個々の発光装置として形成される。但し、以下の説明では、説明の便宜上、適宜ある1つの発光装置に着目して説明および図示する。
図2(a)~(d)は、発光装置10の製造手順を示す図である。
続いて、図2(c)に示すように、発光素子12を基板11に実装する。具体的には、まず、発光素子12を、例えばシリコーン樹脂などの接着樹脂を用いてダイボンディングする。本実施の形態では、発光素子12は、導電体配線14で囲まれる領域に20個配置される。
続いて、図2(d)に示すように、光反射樹脂枠13を、導電体配線14を覆うように形成する。具体的には、例えば樹脂吐出装置(図示せず)を用いて、液状のアルミナフィラー含有シリコーン樹脂を、丸形状の開口部を持つノズルから吐出しながら、所定の位置に描画する。そして、硬化温度:120℃、硬化時間:1時間の条件で加熱硬化処理を施すことにより、光反射樹脂枠13を形成する。なお、硬化温度および硬化時間は一例であり、これに限定されない。
続いて、封止樹脂を基板11上に形成する。具体的には、液状の透光性樹脂に蛍光体を分散させたものである蛍光体含有樹脂を、光反射樹脂枠13により囲まれた領域を満たすよう注入する。蛍光体含有樹脂を注入した後は、所定の温度および時間で硬化させる。これによって、発光素子12およびワイヤ20が封止樹脂によって覆われて保護される。
最後に、複数の発光装置10が作りこまれた一枚の基板から、これを分割ラインに沿って分割し、個々の発光装置10を得る。分割方法としては、分割ラインに沿って基板11の裏面に設けられた分割溝の上方を、表面側から分割ブレードにより剪断する方法がある。この方法によれば、基板11は分割溝に沿って割れるので、容易に分割することができる。分割することにより、個片化された発光装置10を作製し得る。
図1に示す発光装置10では、アライメントマーク18を導電体配線14の内側に形成した例を示したが、図3に示す発光装置30のように、アライメントマーク18を導電体配線14の外側に形成しても良い。尚、アライメントマーク18を導電体配線14の外側に形成する場合には、アライメントマーク18は光反射樹脂枠13によって覆われない方が良い場合もある。これは、アライメントマーク18が導電体配線14の外側に離れて形成される場合には、アライメントマーク18を光反射樹脂枠13によって覆おうとすると、光反射樹脂枠13の幅が広くなりすぎるためである。また、アライメントマーク18を導電体配線14の外側にある場合は、光反射樹脂枠13によって覆わなくてもアライメントマーク18による光の吸収が生じず、光反射樹脂枠13によって覆う必要がないためでもある。
11 基板
12 発光素子
13 光反射樹脂枠
14 導電体配線
15 アノード電極
16 カソード電極
18 アライメントマーク
19 極性マーク
Claims (15)
- 基板と、
前記基板上に配置された発光素子と、
前記基板上に配置された導電体配線と、
前記基板上に配置されたアライメントマークとを備えており、
前記アライメントマークと前記導電体配線とが印刷法により形成されていることを特徴とする発光装置。 - 請求項1に記載の発光装置であって、
前記発光素子の搭載領域を囲むように形成された光反射樹脂枠を備えており、
前記アライメントマークと前記導電体配線とが前記光反射樹脂枠に覆われていることを特徴とする発光装置。 - 請求項1に記載の発光装置であって、
前記発光素子の搭載領域を囲むように形成された光反射樹脂枠を備えており、
前記アライメントマークは、前記導電体配線の外側に配置され、
前記前記導電体配線が前記光反射樹脂枠に覆われており、前記アライメントマークは前記光反射樹脂枠に覆われていないことを特徴とする発光装置。 - 請求項1に記載の発光装置であって、
前記発光素子の搭載領域を囲むように形成された光反射樹脂枠と、
前記光反射樹脂枠の中心に対して対向して配置された一対のランド部とを備えており、
前記ランド部は前記光反射樹脂枠で覆われていないことを特徴とする発光装置。 - 請求項1から4の何れか一項に記載の発光装置であって、
前記基板は、ガラス成分を含むセラミック基板であり、
前記導電体配線および前記アライメントマークは、前記基板に含有されるガラス成分と同一のガラス成分を含んでいることを特徴とする発光装置。 - 請求項5に記載の発光装置であって、
前記導電体配線および前記アライメントマークは、ガラス成分を多く含み、基板に密着する第一層と、前記第一層の上に形成され、ガラス成分を含まないまたはガラス成分が少ない層である第二層との二層構造を有することを特徴とする発光装置。 - 請求項5に記載の発光装置であって、
前記導電体配線は、ガラス成分を多く含み、基板に密着する第一層と、前記第一層の上に形成され、ガラス成分を含まないまたはガラス成分が少ない層である第二層との二層構造を有し、
前記アライメントマークは、ガラス成分を多く含み、基板に密着する第一層のみの単層構造を有することを特徴とする発光装置。 - 請求項5に記載の発光装置であって、
前記発光素子に電源を供給するためのランド部は、ガラス成分を多く含み、基板に密着する第一層と、前記第一層の上に形成され、ガラス成分を含まないまたはガラス成分が少ない層である第二層との二層構造を有することを特徴とする発光装置。 - 基板上に、導電体配線とアライメントマークとを印刷法によって形成する第1工程と、
前記第1工程にて形成されたアライメントマークを用いて前記基板の位置合わせを行いながら、前記基板上に発光素子を搭載し、搭載された前記発光素子と前記導電体配線とをワイヤ接続する第2工程と、
前記発光素子の搭載領域を囲むように光反射樹脂枠を形成する第3工程と、
前記光反射樹脂枠により囲まれた領域に封止樹脂を充填する第4工程とを含むことを特徴とする発光装置の製造方法。 - 請求項9に記載の発光装置の製造方法であって、
前記光反射樹脂枠は、前記アライメントマークと前記導電体配線とを覆うように形成されることを特徴とする発光装置の製造方法。 - 請求項9に記載の発光装置の製造方法であって、
前記アライメントマークは、前記導電体配線の外側に配置され、
前記光反射樹脂枠は、前記導電体配線を覆い、前記アライメントマークを覆わないように形成されることを特徴とする発光装置の製造方法。 - 請求項9から11の何れか一項に記載の発光装置の製造方法であって、
前記基板は、ガラス成分を含むセラミック基板であり、
前記導電体配線および前記アライメントマークは、前記基板に含有されるガラス成分と同一のガラス成分を含んでいることを特徴とする発光装置の製造方法。 - 請求項12に記載の発光装置の製造方法であって、
前記導電体配線および前記アライメントマークは、ガラス成分を多く含み、基板に密着する第一層と、前記第一層の上に形成され、ガラス成分を含まないまたはガラス成分が少ない層である第二層との二層構造を有することを特徴とする発光装置の製造方法。 - 請求項12に記載の発光装置の製造方法であって、
前記導電体配線は、ガラス成分を多く含み、基板に密着する第一層と、前記第一層の上に形成され、ガラス成分を含まないまたはガラス成分が少ない層である第二層との二層構造を有し、
前記アライメントマークは、ガラス成分を多く含み、基板に密着する第一層のみの単層構造を有することを特徴とする発光装置の製造方法。 - 請求項12に記載の発光装置の製造方法であって、
前記発光素子に電源を供給するためのランド部は、ガラス成分を多く含み、基板に密着する第一層と、前記第一層の上に形成され、ガラス成分を含まないまたはガラス成分が少ない層である第二層との二層構造を有することを特徴とする発光装置の製造方法。
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CN201380041242.9A CN104521014B (zh) | 2012-08-06 | 2013-07-11 | 发光装置 |
JP2014529397A JPWO2014024627A1 (ja) | 2012-08-06 | 2013-07-11 | 発光装置および発光装置の製造方法 |
EP13828024.3A EP2882000A4 (en) | 2012-08-06 | 2013-07-11 | LIGHT EMITTING APPARATUS AND METHOD FOR MANUFACTURING THE SAME |
US14/419,841 US9484309B2 (en) | 2012-08-06 | 2013-07-11 | Light emitting device and method for manufacturing light emitting device |
US15/271,762 US10224469B2 (en) | 2012-08-06 | 2016-09-21 | Light emitting device and method for manufacturing light emitting device |
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US14/419,841 A-371-Of-International US9484309B2 (en) | 2012-08-06 | 2013-07-11 | Light emitting device and method for manufacturing light emitting device |
US15/271,762 Division US10224469B2 (en) | 2012-08-06 | 2016-09-21 | Light emitting device and method for manufacturing light emitting device |
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EP (1) | EP2882000A4 (ja) |
JP (2) | JPWO2014024627A1 (ja) |
CN (1) | CN104521014B (ja) |
TW (2) | TWI583032B (ja) |
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Cited By (2)
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JP2015173193A (ja) * | 2014-03-12 | 2015-10-01 | シチズン電子株式会社 | 光源ユニット |
JP2019016728A (ja) * | 2017-07-10 | 2019-01-31 | パナソニックIpマネジメント株式会社 | 発光装置、照明装置、及び、実装基板 |
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CN106206669B (zh) * | 2016-08-31 | 2018-12-07 | 昆山维信诺科技有限公司 | 用于异形oled产品的布线方法以及异形oled产品 |
JP2018121038A (ja) * | 2017-01-27 | 2018-08-02 | パナソニックIpマネジメント株式会社 | 実装基板、発光装置、及び、照明装置 |
JP7116330B2 (ja) * | 2020-01-31 | 2022-08-10 | 日亜化学工業株式会社 | 発光装置の製造方法 |
CN112904682B (zh) * | 2021-01-22 | 2023-08-01 | 西华大学 | 一种测量倾角和旋转角的光刻对准标记及对准方法 |
TWI799272B (zh) * | 2022-03-01 | 2023-04-11 | 南亞科技股份有限公司 | 具有疊置標記結構之半導體元件結構的製備方法 |
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- 2013-07-11 JP JP2014529397A patent/JPWO2014024627A1/ja active Pending
- 2013-07-11 WO PCT/JP2013/068966 patent/WO2014024627A1/ja active Application Filing
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- 2013-07-24 TW TW102126524A patent/TWI523280B/zh not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
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TWI583032B (zh) | 2017-05-11 |
US9484309B2 (en) | 2016-11-01 |
JP6198874B2 (ja) | 2017-09-20 |
JPWO2014024627A1 (ja) | 2016-07-25 |
CN104521014B (zh) | 2018-06-22 |
EP2882000A4 (en) | 2016-03-16 |
US10224469B2 (en) | 2019-03-05 |
TWI523280B (zh) | 2016-02-21 |
TW201409782A (zh) | 2014-03-01 |
JP2016106441A (ja) | 2016-06-16 |
TW201614876A (en) | 2016-04-16 |
US20150171294A1 (en) | 2015-06-18 |
CN104521014A (zh) | 2015-04-15 |
US20170012189A1 (en) | 2017-01-12 |
EP2882000A1 (en) | 2015-06-10 |
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