KR20110098421A - Chip on board type light emitting unit array, method for repairing the same and light emitting unit for repairing the same - Google Patents

Chip on board type light emitting unit array, method for repairing the same and light emitting unit for repairing the same Download PDF

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Publication number
KR20110098421A
KR20110098421A KR1020100018040A KR20100018040A KR20110098421A KR 20110098421 A KR20110098421 A KR 20110098421A KR 1020100018040 A KR1020100018040 A KR 1020100018040A KR 20100018040 A KR20100018040 A KR 20100018040A KR 20110098421 A KR20110098421 A KR 20110098421A
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KR
South Korea
Prior art keywords
light emitting
circuit board
sub
emitting unit
base
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Application number
KR1020100018040A
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Korean (ko)
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KR101064146B1 (en
Inventor
박재순
Original Assignee
박재순
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Priority to KR1020100018040A priority Critical patent/KR101064146B1/en
Priority to PCT/KR2010/005736 priority patent/WO2011105670A1/en
Publication of KR20110098421A publication Critical patent/KR20110098421A/en
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Publication of KR101064146B1 publication Critical patent/KR101064146B1/en

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/225—Correcting or repairing of printed circuits
    • 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
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
    • H01L2224/491—Disposition
    • H01L2224/49105—Connecting at different heights
    • H01L2224/49107—Connecting at different heights on the semiconductor or solid-state body
    • 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
    • H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
    • H01L2224/732—Location after the connecting process
    • H01L2224/73251—Location after the connecting process on different surfaces
    • H01L2224/73265—Layer and wire connectors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/182—Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/17—Post-manufacturing processes
    • H05K2203/176—Removing, replacing or disconnecting component; Easily removable component

Abstract

Disclosed are a surface mount type light emitting unit array, a repair method thereof, and a repair light emitting unit having a structure that can be repaired by replacing a defective light emitting chip among a plurality of light emitting chips mounted on a surface of a substrate.
The disclosed surface mount type light emitting unit array repair method includes puncturing a predetermined mounting area in which a bad light emitting chip is mounted among a plurality of light emitting chips mounted on a main circuit board, separating the bad light emitting chip on the main circuit board, and repairing a repair hole. Forming; Preparing a preliminary light emitting unit including a sub base, a sub circuit board formed on the sub base and having a predetermined pattern of sub electrodes, and a preliminary light emitting chip mounted on the sub circuit board and electrically connected to the sub electrodes; ; Inserting and bonding the preliminary light emitting unit into the repair hole; And electrically connecting the sub circuit board and the main circuit board.

Description

CHIP ON BOARD TYPE LIGHT EMITTING UNIT ARRAY, METHOD FOR REPAIRING THE SAME AND LIGHT EMITTING UNIT FOR REPAIRING THE SAME}

The present invention relates to a light emitting unit array, a repair method thereof, and a repair light emitting unit, and more particularly, a surface mount type of a structure which can be repaired by replacing a defective light emitting chip among a plurality of light emitting chips mounted on a surface of a substrate. A light emitting unit array, a repair method thereof, and a light emitting unit for repair are provided.

In general, a surface mount light emitting unit array has a structure in which a plurality of light emitting chips are mounted on a surface of a printed circuit board, and each of the plurality of light emitting chips is electrically connected to a printed circuit board using a wire. Since the surface mount light emitting unit array has a configuration in which a plurality of light emitting chips are arranged on the surface of the substrate, it is possible to easily realize a surface light source, so that the surface-mounted light emitting unit array can be used in industrial fields such as a backlight light source of a liquid crystal display, lighting fixtures, traffic signals, etc. It has the advantage of being widely applicable.

The surface-mounted light emitting unit array takes a method of removing the light emitting chip from the substrate and mounting a new light emitting chip in the reverse order of the manufacturing process in order to repair the damage if at least one of the plurality of light emitting chips mounted on the substrate is damaged. It should be noted that there is a disadvantage in that it takes more time, cost and effort to repair damaged light emitting chips than replacing with a new light emitting unit array.

As a way to solve the above problems, the Republic of Korea Patent Publication No. 10-2009-0019510 (published: February 25, 2009) has been disclosed a COB type LED package and a recovery method of the structure is easy to recover. .

The disclosed LED package includes a plurality of mounting regions on which a light emitting chip is mounted on a substrate, a plurality of cutouts penetrating through an outer edge of the mounting region, and a light emitting connection between the cutouts and other adjacent cutouts. And a plurality of cutouts that are cut so as to separately separate the mounting area where the chip is mounted from the substrate. Accordingly, the mounting area including the defective light emitting chip can be easily removed along the cutting portion, and the replacement area can be easily replaced with the mounting area on which the good light emitting chip is mounted.

On the other hand, since the LED package has a configuration in which a cutout is formed along the outer edge of the mounting area, heat dissipation efficiency may be lowered by restricting the heat generated during the operation of the light emitting chip to expand to the periphery. In addition, when mounting the light emitting chip on the metal substrate in consideration of the heat dissipation characteristics, the cutout may not be easily cut, so it may not be easy to remove the bad light emitting chip. Furthermore, when the defective light emitting chip is removed and a good quality light emitting chip is to be bonded, durability may be greatly reduced since the bonding part is limited.

The present invention has been made in view of the above-described points, and the surface of the structure in which the defective light emitting chip is easily removed from the plurality of light emitting chips mounted on the surface of the substrate, and the replaced light emitting chip is firmly mounted on the substrate. An object of the present invention is to provide a mounted light emitting unit array and a repair method thereof.

Another object of the present invention is to provide a light emitting unit for a repair which is used to repair a surface mount light emitting unit array.

In order to achieve the above object, the present invention provides a main base, a main circuit board formed on the main base and having a predetermined pattern of electrodes, and mounted on the main circuit board to be spaced apart from each other at predetermined intervals. In the repair method of a surface-mount light emitting unit array comprising a plurality of light emitting chips connected to each other and irradiated with light,

Drilling a predetermined mounting area on the main circuit board on which the bad light emitting chip is mounted among the plurality of light emitting chips, separating the bad light emitting chip on the main circuit board, and forming a repair hole; A preliminary light emitting unit includes a sub base, a sub circuit board formed on the sub base and having a sub electrode having a predetermined pattern, and a preliminary light emitting chip mounted on the sub circuit board and electrically connected to the sub electrode. Making a step; Inserting and bonding the preliminary light emitting unit into the repair hole; And electrically connecting the sub circuit board and the main circuit board.

The sub base may include a first sub base bonded to the repair hole by an adhesive and made of a metal or an insulator material; The sub-circuit board is formed on the first sub-base so that a portion thereof extends on the main circuit board, and includes a second sub-base formed of an insulator material and patterned on the upper part of the sub-circuit board. It is electrically insulated from the circuit board and the first sub base.

The sub base is made of an insulator material and is bonded by an adhesive in the repair hole, and the sub circuit board is formed on the sub base to be positioned in the repair hole.

The sub base is made of an insulator material, and is bonded to the repair hole by an adhesive, and the sub circuit board is formed on the sub base so that a part of the sub circuit board extends onto the main circuit board, and the preliminary light is emitted to the repair hole. When the unit is inserted, the main circuit board and the sub circuit board are electrically connected directly.

The repair hole may be tapered or stepped, and the preliminary light emitting unit may have a shape corresponding to the repair hole. When the preliminary light emitting unit is inserted into the repair hole, the preliminary light emitting unit may be caught in the repair hole. It is supposed to be.

The electrically connecting the sub circuit board and the main circuit board may be performed by at least one of soldering, conductive ink application, and wire bonding between the sub circuit board and the main circuit board.

The surface mounted light emitting unit array may further include a first wavelength converting member which is coated on each of the plurality of light emitting chips and converts wavelengths of light emitted from each of the plurality of light emitting chips.

The preliminary light emitting unit may further include a second wavelength conversion member which is coated on the preliminary light emitting chip and converts the wavelength of light irradiated from the preliminary light emitting chip.

In addition, the surface-mounted light emitting unit array according to the present invention for achieving the above object, the base; A main circuit board formed on the base and having an electrode having a predetermined pattern; And a plurality of light emitting chips mounted on the main circuit board to be spaced apart from each other at predetermined intervals and electrically connected to the electrodes to irradiate light, respectively, wherein the main circuit board is mounted and electrically mounted on each of the plurality of light emitting chips. A plurality of light emitting chip mounting units to be connected; A plurality of dummy mounting parts which are formed with respect to each of the plurality of light emitting chip mounting parts, and in which a preliminary light emitting chip that replaces the bad light emitting chip is mounted and electrically connected when a failure occurs in at least one light emitting chip of the plurality of light emitting chips; Wow; It characterized in that it comprises a connecting portion for electrically connecting each of the plurality of light emitting chip mounting portion.

The dummy mounting part may be formed between the connection part and the light emitting chip mounting part.

In addition, the present invention may further include a wavelength conversion member which is respectively applied on the plurality of light emitting chips, and converts the wavelength of light irradiated from each of the plurality of light emitting chips.

In order to achieve the above object, the present invention also provides a main base, a main circuit board formed on the main base and having a predetermined pattern of electrodes, and the main circuit. A light emitting unit for repairing a defective light emitting chip of a surface mount light emitting unit array including a plurality of light emitting chips mounted on a substrate spaced apart from each other at predetermined intervals and electrically connected to the electrodes to irradiate light. A sub circuit board formed on the sub base and having a sub electrode having a predetermined pattern and electrically connected to the main circuit board; And a preliminary light emitting chip mounted on the sub circuit board and electrically connected to the sub electrode, and coupled to a repair hole formed in a predetermined mounting area on the main circuit board on which a bad light emitting chip is mounted among the plurality of light emitting chips. It is characterized by.

The sub base may include a first sub base bonded to the repair hole by an adhesive and made of a metal or an insulator material; A part may be formed on the first sub base so as to extend on the main circuit board, and may include a second sub base made of an insulator material and patterned on the upper part of the sub circuit board.

The sub base may be made of an insulator material and bonded to the repair hole by an adhesive, and the sub circuit board may be formed on the sub base to be positioned in the repair hole.

The sub base is made of an insulator material, and is bonded to the repair hole by an adhesive, and the sub circuit board is formed on the sub base such that a part of the sub circuit board extends onto the main circuit board. The main circuit board and the sub circuit board are electrically connected directly.

The repair hole may be tapered or stepped, and the preliminary light emitting unit may have a shape corresponding to the repair hole so that the preliminary light emitting unit may be caught in the repair hole when the preliminary light emitting unit is inserted into the repair hole. Can be.

The present invention may further include a wavelength conversion member which is coated on the preliminary light emitting chip and converts the wavelength of light irradiated from the preliminary light emitting chip.

In another aspect, the present invention may further include a reinforcing member formed on one surface of the sub base to bond the main base and the sub base.

The surface mount light emitting unit array repair method according to the present invention configured as described above forms a repair hole by removing a component in a predetermined region including the light emitting chip in a puncturing manner when a defective light emitting chip is found in the light emitting unit array. The surface mount type light emitting unit array can be easily repaired by inserting, bonding, and connecting a preliminary light emitting unit separately manufactured to the formed repair hole.

In addition, the surface-mounted light emitting unit array according to the present invention provides a dummy mounting unit in parallel with the light emitting chip mounting unit, and easily mounts a preliminary light emitting chip on the dummy mounting unit when a defect occurs in the light emitting chip on the light emitting chip mounting unit. There is an advantage that the mounted light emitting unit array can be repaired.

In addition, since the repair light emitting unit according to the present invention has a configuration suitable for the light emitting unit array in which the defective light emitting chip is removed by a puncturing method, the repair light emitting unit can be easily installed and electrically connected to the repair hole provided in the light emitting unit array. have.

1 is a partial cross-sectional view showing a surface-mount light emitting unit array according to an embodiment of the present invention.
2 is a plan view showing a surface-mount light emitting unit array according to an embodiment of the present invention.
Figure 3 is a partial cross-sectional view for explaining a repair process of the surface-mount light emitting unit array according to an embodiment of the present invention.
4 and 5 are each a partial plan view for explaining a repair process of the surface-mount light emitting unit array according to an embodiment of the present invention.
Figure 6a is a schematic cross-sectional view showing a preliminary light emitting unit for a repair according to the first embodiment of the present invention.
6B is a partial cross-sectional view showing a surface-mounted light emitting unit array repaired by a repairing light emitting unit according to a first embodiment of the present invention.
Figure 7a is a schematic cross-sectional view showing a preliminary light emitting unit for a repair according to a second embodiment of the present invention.
7B is a partial cross-sectional view showing a surface mounted light emitting unit array repaired by a repairing preliminary light emitting unit according to a second embodiment of the present invention.
8 is a cross-sectional view illustrating an example in which a sub electrode of a repair preliminary light emitting unit and a main electrode of a main circuit board are connected by using wires.
9 is a cross-sectional view illustrating an example in which a sub-electrode of a repair preliminary light emitting unit and a main electrode of a main circuit board are connected by using conductive lines.
10A is a schematic cross-sectional view showing a preliminary light emitting unit for a repair according to a third embodiment of the present invention.
10B is a partial cross-sectional view showing a surface mounted light emitting unit array repaired by a repairing preliminary light emitting unit according to a third embodiment of the present invention.
FIG. 11 is a partial cross-sectional view of another example of a surface mounted light emitting unit array repaired by a repairing preliminary light emitting unit according to a third embodiment of the present invention; FIG.
12 is a partial cross-sectional view of a surface mounted light emitting unit array showing an example in which side surfaces and repair holes forming sub-bases of a preliminary light emitting unit are formed in a corresponding tapered shape;
13 is a plan view showing a portion of a surface mounted light emitting unit array according to another embodiment of the present invention.
FIG. 14 is a view illustrating a preliminary light emitting chip mounted on a dummy mounting unit. FIG.

Hereinafter, a surface mounted light emitting unit array, a repair method thereof, and a repair light emitting unit according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partial cross-sectional view showing a surface mounted light emitting unit array according to an embodiment of the present invention, Figure 2 is a plan view showing a part of a surface mounted light emitting unit array according to an embodiment of the present invention.

Referring to the drawings, the surface-mount type light emitting unit array 10 according to an embodiment of the present invention is a main circuit board (11), and a main circuit board having a main electrode of a predetermined pattern formed on the main base (11) 15 and a plurality of light emitting chips 20 mounted on the main circuit board 15 to be spaced apart from each other by a predetermined interval. The main circuit board 15 is bonded to the main base 11 by the insulating adhesive layer 13. The insulating adhesive layer 13 is made of an electrical insulator, and is formed by curing after applying a ceramic coating or an adhesive on the main base 11. The main circuit board 15 is formed on the insulating adhesive layer 13 through a semiconductor patterning process.

Each of the plurality of light emitting chips 20 is mounted on the main circuit board 15 or the insulating adhesive layer 13 by a die bonding method and electrically connected to the main electrode of the main circuit board 15 by bonding using a wire 30. Will be connected. The light emitting chip 20 irradiates light having a predetermined wavelength when power is applied through the main electrode, and may include a light emitting diode (LED), a laser diode, or the like. The light emitting unit according to the present embodiment may include an LED emitting light of blue light or ultraviolet wavelength as the light emitting chip 20.

In addition, the light emitting unit according to the present invention may further include a wavelength conversion member 50, as shown in FIG. The wavelength conversion member 50 is formed of a material such as a phosphor and a phosphor, and converts the wavelength of light applied on the light emitting chip 20 and irradiated from the light emitting chip 20. Therefore, the light emitting unit according to the present invention, when a blue LED or an ultraviolet LED is employed as the light emitting chip 20, white light is irradiated by a combination of light irradiated from the LED and light of a predetermined wavelength excited from the wavelength conversion member 50. Can be. Here, in coating and forming the wavelength conversion member 50 on the light emitting chip 20, the light emitting chip 20 is mounted on the insulating adhesive layer 13 or the main circuit board 15, or in a wafer state. The light emitting chip coated with the wavelength conversion member formed by coating the wavelength conversion member 50 on each of the light emitting chips 20 may be employed.

The surface-mounted light emitting unit array configured as described above can be slimmed down to approximately 1/5 level as compared with the conventional light emitting chip package. In addition, by omitting the light emitting chip package process, the price can be reduced to about 1/10, and there is an advantage that the process can be simplified and the yield can be increased.

On the other hand, the surface-mounted light emitting unit array configured as described above may damage at least one of the plurality of light emitting chips during the manufacturing process or during use. Hereinafter, a repair method will be described in detail when the light emitting chip constituting the surface mount light emitting unit array configured as described above is damaged.

3 and 4, a repair hole H is formed by drilling a predetermined mounting area A on the main circuit board 15 on which the bad light emitting chip 25 is mounted among the plurality of light emitting chips 20. do. In this process, the entire defective light emitting unit 21 in the mounting area A including the defective light emitting chip 25 and the wavelength conversion member 51 coated on the defective light emitting chip 25 is separated from the light emitting unit array. . A part of the main electrode 17 of the main circuit board 15 is positioned around the repair hole H formed as described above. The repair hole H may be formed using a drilling machine, a punch, or the like.

Thereafter, as shown in FIG. 5, a preliminary light emitting unit 100 for repair is prepared, and it is inserted into and bonded to the repair hole (H in FIG. 4). The preliminary light emitting unit 100 is inserted into the repair hole H and manufactured separately from the surface mounted light emitting unit array 10 for the purpose of replacing the damaged light emitting chip (25 in FIG. 4). After inserting and bonding the preliminary light emitting unit 100 to the repair hole H, the surface mount light emitting unit is electrically connected to the preliminary light emitting unit 100 and the main electrode 17 of the main circuit board 15. Repair of the array 10 is complete.

As described above, when a defective light emitting chip is found, a repair hole H is formed by removing a component in a predetermined area A including the light emitting chip in a puncturing manner, and a preliminary fabricated separately in the formed repair hole H. By inserting, bonding, and connecting the light emitting unit 100, there is an advantage that the surface mounted light emitting unit array can be easily repaired.

Hereinafter, a repair preliminary light emitting unit according to an embodiment of the present invention will be described in detail.

6A and 6B, the repair preliminary light emitting unit 110 according to the first embodiment of the present invention includes a subbase 111 and a subelectrode of a predetermined pattern formed on the subbase 111. And a sub-circuit board 115 having a 115a, and a preliminary light emitting chip 117 mounted on the sub-circuit board 115 and electrically connected to the sub-electrode 115a. In addition, the preliminary light emitting unit 110 may be further coated on the preliminary light emitting chip 117, and may further include a second wavelength conversion member 119 for converting the wavelength of light irradiated from the preliminary light emitting chip 117. The sub base 111 may include first and second sub bases 112 and 113 according to a material and an installation position. The first sub base 112 is bonded by the adhesive 121 in the repair hole H. The first sub base 112 may be made of a metal material or an insulator material in the material.

The second sub base 113 is formed on the first sub base 112 so that an outer circumference thereof extends on the main circuit board 15, and a sub circuit board 115 is formed thereon. In addition, the second sub base 113 is made of an insulator material, such that the sub circuit board 115 is electrically insulated from the main circuit board 15 and the first sub base 112.

Referring to FIG. 6B, the repair preliminary light emitting unit 110 according to the present embodiment configured as described above is bonded by the adhesive 121 in a state of being inserted into the repair hole H. At this time, the sub-electrode 115a of the second sub-base 113 and the sub-circuit board 115 formed thereon is positioned on the main circuit board 15, and the sub-electrode 115a and the main circuit board 15. The main electrode 17 of the is electrically connected. In this case, the electrical connection may be performed by applying the conductive paste 123 between the sub-electrode 115a and the main electrode 17 as shown in FIG. 6B. In addition, the electrical connection may be performed by a conductive ink coating method, a wire method, or a conductive wire method, in addition to soldering using a conductive paste. Details of the method using a wire and the method using a conductive line will be described later.

7A and 7B, the repair preliminary light emitting unit 130 according to the second embodiment of the present invention includes a subbase 131 and a subelectrode of a predetermined pattern formed on the subbase 131. And a preliminary light emitting chip 137 mounted on the sub circuit board 135 and electrically connected to the sub electrode 135a. In addition, the preliminary light emitting unit 130 may be further coated on the preliminary light emitting chip 137 and further include a second wavelength conversion member 139 for converting the wavelength of light emitted from the preliminary light emitting chip 137. The subbase 131 is made of an insulator material, and is bonded to the repair hole H by the adhesive 141. The sub circuit board 135 is formed on the sub base 131, and the entirety of the sub circuit board 135 is located on the repair hole H.

Referring to FIG. 7B, the preliminary light emitting unit 130 for repair according to the present embodiment configured as described above is bonded by the adhesive 141 in a state of being inserted into the repair hole H. Thereafter, the sub-electrode 135a and the main electrode 17 of the main circuit board 15 are electrically connected. In this case, the electrical connection may be performed by applying the conductive paste 143 between the sub electrode 135a and the main electrode 17 as shown in FIG. 7B.

In addition, the electrical connection may be performed by a conductive ink coating method, a wire method, or a conductive wire method, in addition to soldering using a conductive paste.

8 is a cross-sectional view illustrating an example in which the sub-electrode 135a of the repair preliminary light emitting unit 130 and the main electrode 17 of the main circuit board 15 are connected by using a wire 145. to be. In this case, the connection using the wire 145 has an advantage of ensuring high electrical conductivity.

9 illustrates an example in which the sub-electrode 135a of the repair preliminary light emitting unit 130 and the main electrode 17 of the main circuit board 15 are electrically connected using a conductive line 147. It is a cross section.

Referring to FIG. 9, the conductive line 146 includes a conductor 147 disposed on the sub-electrode 135a and the main electrode 17, and a conductive adhesive 148. The conductive adhesive 148 bonds the conductor 147 to the sub-electrode 135a and the main electrode 17, and enables the current to flow between the conductor 147 and the sub-electrode 135a and the main electrode 17. Here, the first and second insulators 149a and 149a may be disposed on the lower and upper portions of the conductor 147 so as to seal the conductors 147 at portions other than the sub-electrode 135a and the main electrode 17. 149b). Since the conductive line 146 configured as described above is coupled in a crimping manner, there is an advantage that it can be easily connected.

10A and 10B, the repair preliminary light emitting unit 150 according to the third embodiment of the present invention includes a sub base 151 and a sub electrode having a predetermined pattern formed on the sub base 151. A sub circuit board 155 having a 155a and a preliminary light emitting chip 157 mounted on the sub circuit board 155 and electrically connected to the sub electrode 155a are included. In addition, the preliminary light emitting unit 150 may be further disposed on the preliminary light emitting chip 157 and further include a second wavelength conversion member 159 for converting the wavelength of light irradiated from the preliminary light emitting chip 157. The subbase 151 is made of an insulator material and is bonded to the repair hole H by an adhesive. The sub circuit board 155 is formed on the sub base 151 so that a part thereof extends on the main circuit board 15. Therefore, when the preliminary light emitting unit 157 is inserted and bonded to the repair hole H, the main circuit board 15 and the sub circuit board 155 may be electrically connected directly. In this way, by directly connecting the main circuit board 15 and the sub-circuit board 155 it is possible to minimize the electrical loss at the connection portion.

Referring to FIG. 10B, the repair preliminary light emitting unit 150 according to the present exemplary embodiment configured as described above is bonded by the first adhesive 161 in the state of being inserted into the repair hole H. At this time, the sub electrodes 155a of the sub circuit board 155 are positioned on the main electrode 17 of the main circuit board 15 and electrically connected to each other by a direct contact method. Here, the second adhesive 163 may be applied on a portion where the main circuit board 15 and the sub circuit board 155 are directly connected to each other to strengthen the bonding therebetween.

In addition, the preliminary light emitting unit 150 is a method for increasing the bonding strength between the main base 11 and the preliminary light emitting unit 150 in which the repair hole H is formed, as shown in FIG. 165 may be further included. The reinforcing member 165 is configured in the form of an adhesive tape, and is bonded in a manner in which the preliminary light emitting chip 157 is bonded to the repair hole H.

In addition, in forming the repair preliminary light emitting units 110, 130, 150 and the repair hole (H) according to each of the first to third embodiments of the present invention, as shown in FIG. The side wall portions may be formed into corresponding tapered or stepped shapes. 12 illustrates that the side surface 171a constituting the sub base 171 of the preliminary light emitting unit 170 is tapered. Referring to FIG. 12, in forming the repair hole H, the repair hole H is formed in a shape corresponding to the shape of the sub base 171. That is, in forming the repair hole H, the diameter in the direction in which the preliminary light emitting chip 175 is mounted is tapered to be larger than the diameter in the opposite direction. Accordingly, when the preliminary light emitting unit 170 is inserted into the repair hole H from the upper direction, the preliminary light emitting unit 170 is prevented from falling below the repair hole H, and the preliminary light emitting unit 170 and the repair hole are prevented. Since the side surface of the preliminary light emitting unit 170 presses the adhesive 177 bonded between the (H), it is possible to increase the mutual bonding force.

FIG. 13 is a plan view showing a portion of a surface mounted light emitting unit array according to another embodiment of the present invention, and FIG. 14 is a view showing a preliminary light emitting chip mounted on a dummy mounting unit.

Referring to the drawings, the surface-mounted light emitting unit array 200 according to another embodiment of the present invention includes a main base 210 and a main electrode 220a having a predetermined pattern formed on the main base 210. The main circuit board 220 and a plurality of main light emitting chips 250 mounted on the main circuit board 220 to be spaced apart from each other by a predetermined interval. The main circuit board 220 is formed on the main base 210 through a semiconductor patterning process.

Each of the plurality of main light emitting chips 250 is mounted in a die bonding manner on the main circuit board 220 to be spaced apart from each other at a predetermined interval, and electrically connected to the main electrode 220a by a bonding method using a wire 251. Will be wired. The main light emitting chip 250 irradiates light of a predetermined wavelength when power is applied through the main electrode 220a. In addition, the light emitting unit according to the present invention may further include a wavelength conversion member 260.

The surface mount light emitting unit array according to the present embodiment is compared with the surface mount light emitting unit array according to the first embodiment, and the mounting of the repair light emitting unit in the repair process through the shape deformation of the main circuit board 220. The positions are distinguished from one another, and the other configurations are substantially the same as the surface mounted light emitting unit array according to the first embodiment, and thus detailed description thereof will be omitted.

The main circuit board 220 of the surface mounted light emitting unit array according to the present embodiment includes a plurality of light emitting chip mounting parts 221 in which each of the plurality of main light emitting chips 250 is mounted and electrically connected, and a plurality of light emitting chips. The dummy mounting part 225 extending with respect to each of the mounting parts 221 may include a connecting part 227 electrically connecting each of the plurality of light emitting chip mounting parts 221 to polarity. The plurality of dummy mounting parts 225 are formed between the connection part 227 and the light emitting chip mounting part 221.

In the dummy mounting unit 225, when a failure occurs in at least one of the plurality of main light emitting chips 260, a preliminary light emitting chip 310 is replaced and electrically connected to replace the defective light emitting chip. Here, the method of mounting and electrically connecting the preliminary light emitting chip 310 is substantially the same as the method of mounting and electrically connecting the main light emitting chip 250.

The defective light emitting chip 250a among the plurality of main light emitting chips 250 may be divided into a case in which it does not operate when a power is applied and a case in which a malfunction occurs. That is, when a failure occurs that does not operate even when the power is applied, the defective light emitting chip does not affect the overall operation of the light emitting unit array, and thus the removal operation by puncturing may be omitted.

When a malfunction occurs when power is applied, removal of the defective light emitting chip 250a is required. In this case, the predetermined mounting area C on the main circuit board 220 on which the bad light emitting chip 250a is mounted is drilled. In this process, the entire mounting area C including the bad light emitting chip 250a and the wavelength conversion member 250b coated on the bad light emitting chip 250a is separated from the light emitting unit array.

As described above, the configured light emitting unit array includes a dummy mounting unit 225 extending for each of the light emitting chip mounting units 221, and the preliminary light emitting chip 310 is mounted on the dummy mounting unit 225. By connecting electrically, there is an advantage that the surface mount light emitting unit array can be easily repaired. Furthermore, when the defective light emitting chip malfunctions, the process of removing the components in the predetermined region including the defective light emitting chip in a perforated manner may be performed to easily remove the defective light emitting chip.

The above embodiments are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Accordingly, the true scope of protection of the present invention should be determined by the technical idea of the invention described in the following claims.

10, 200: surface mount light emitting unit array
11, 210: main base 13: insulation adhesive layer
15, 220: main circuit board 17, 220a: main electrode
20: light emitting chip 25, 250a: bad light emitting chip
30: wire 50, 51, 260: wavelength conversion member
100, 110, 130, 150, 170: preliminary light emitting unit
111, 131, 151, 171: subbase 112: first subbase
113: second sub-base 115, 135, 155: sub-circuit board
115a, 135a, 155a: sub-electrodes 117, 137, 157, 175, 310: preliminary light emitting chip
119, 139, 159: second wavelength conversion member 121, 141, 177: adhesive
145: wire 147: conductive wire
148: conductive adhesive 161: first adhesive
163: second adhesive 165: reinforcing member
221: light emitting chip mounting portion 225: dummy mounting portion
227: connection portion 250: the main light emitting chip
H: Repair Hall

Claims (18)

A main circuit board, a main circuit board formed on the main base and having electrodes of a predetermined pattern, and mounted on the main circuit board at a predetermined interval apart from each other and electrically connected to the electrodes to irradiate light. In the repair method of a surface-mount light emitting unit array containing a chip,
Drilling a predetermined mounting area on the main circuit board on which the bad light emitting chip is mounted among the plurality of light emitting chips, separating the bad light emitting chip on the main circuit board, and forming a repair hole;
A preliminary light emitting unit includes a sub base, a sub circuit board formed on the sub base and having a sub electrode having a predetermined pattern, and a preliminary light emitting chip mounted on the sub circuit board and electrically connected to the sub electrode. Making a step;
Inserting and bonding the preliminary light emitting unit into the repair hole;
And electrically connecting the sub circuit board and the main circuit board to each other. The method of claim 1,
The sub-base
A first sub base bonded to the repair hole by an adhesive and made of a metal or an insulator material;
The sub-circuit board is formed on the first sub-base so that a portion thereof extends on the main circuit board, and includes a second sub-base formed of an insulator material and patterned on the upper part of the sub-circuit board. The repair method of a surface-mount light emitting unit array, characterized in that the circuit board and the first sub-base is electrically insulated. The method of claim 1,
The sub base is made of an insulator material, and bonded to the repair hole by an adhesive,
And the sub circuit board is formed on the sub base so as to be located in the repair hole. The method of claim 1,
The sub base is made of an insulator material, and bonded to the repair hole by an adhesive,
The sub circuit board is formed on the sub base so that a portion thereof extends on the main circuit board,
And the main circuit board and the sub circuit board are electrically connected to each other when the preliminary light emitting unit is inserted into the repair hole. The method according to any one of claims 1 to 4,
The repair hole is tapered or stepped, the preliminary light emitting unit is formed in a shape corresponding to the repair hole,
When the preliminary light emitting unit is inserted into the repair hole, the preliminary light emitting unit can be caught in the repair hole. The method according to any one of claims 1 to 4,
The step of electrically connecting the sub circuit board and the main circuit board,
The method of repairing a surface mount type light emitting unit array, wherein the sub-circuit board and the main circuit board are performed by at least one of soldering, conductive ink coating, and wire bonding. The method according to any one of claims 1 to 4,
The surface mount light emitting unit array,
And a first wavelength conversion member coated on the plurality of light emitting chips, the first wavelength conversion member converting wavelengths of light irradiated from each of the plurality of light emitting chips. The method of claim 7, wherein
The preliminary light emitting unit,
And a second wavelength conversion member applied on the preliminary light emitting chip and converting wavelengths of light irradiated from the preliminary light emitting chip. A main circuit board, a main circuit board formed on the main base and having electrodes of a predetermined pattern, and mounted on the main circuit board at a predetermined interval apart from each other and electrically connected to the electrodes to irradiate light. In the light emitting unit for a defective light emitting chip repair of a surface mount light emitting unit array including a chip,
A subbase;
A sub circuit board formed on the sub base and having a sub electrode having a predetermined pattern and electrically connected to the main circuit board;
And a preliminary light emitting chip mounted on the sub circuit board and electrically connected to the sub electrode, and coupled to a repair hole formed in a predetermined mounting area on the main circuit board on which a bad light emitting chip is mounted among the plurality of light emitting chips. Repair light emitting unit, characterized in that. 10. The method of claim 9,
The sub-base
A first sub base bonded to the repair hole by an adhesive and made of a metal or an insulator material;
The light emitting unit for a repair which is formed on the first sub-base so that a portion thereof extends on the main circuit board, the second sub-base is formed of an insulator material, and the sub-circuit board is patterned thereon. . 10. The method of claim 9,
The sub base is made of an insulator material, and bonded to the repair hole by an adhesive,
And the sub circuit board is formed on the sub base so as to be located in the repair hole. 10. The method of claim 9,
The sub base is made of an insulator material, and bonded to the repair hole by an adhesive,
The sub circuit board is formed on the sub base so that a portion thereof extends on the main circuit board,
The light emitting unit for a repair, characterized in that the main circuit board and the sub-circuit board are electrically connected directly when inserted into the repair hole. 13. The method according to any one of claims 9 to 12,
The repair hole is tapered or stepped, the preliminary light emitting unit is formed in a shape corresponding to the repair hole,
When the preliminary light emitting unit is inserted into the repair hole, the preliminary light emitting unit can be caught in the repair hole. 13. The method according to any one of claims 9 to 12,
The light emitting unit for a repair applied to the preliminary light emitting chip, and further comprising a wavelength conversion member for converting the wavelength of light irradiated from the preliminary light emitting chip. 13. The method according to any one of claims 9 to 12,
The light emitting unit for a repair is formed on one surface of the sub base, further comprising a reinforcing member for joining the main base and the sub base. In the surface mount light emitting unit array,
A base;
A main circuit board formed on the base and having an electrode having a predetermined pattern;
A plurality of light emitting chips mounted on the main circuit board to be spaced apart from each other at predetermined intervals and electrically connected to the electrodes to irradiate light, respectively;
The main circuit board,
A plurality of light emitting chip mounting parts to which each of the plurality of light emitting chips is mounted and electrically connected;
A plurality of dummy mounting parts which are formed with respect to each of the plurality of light emitting chip mounting parts, and in which a preliminary light emitting chip that replaces the bad light emitting chip is mounted and electrically connected when a failure occurs in at least one of the light emitting chips; Wow;
And a connection part electrically connecting each of the plurality of light emitting chip mounting parts to each other. The method of claim 16,
And the dummy mounting portion is formed between the connection portion and the light emitting chip mounting portion. The method according to claim 16 or 17,
And a wavelength conversion member applied to each of the plurality of light emitting chips and converting wavelengths of light emitted from each of the plurality of light emitting chips.
KR1020100018040A 2010-02-26 2010-02-26 Surface mount light emitting unit array, repair method thereof and light emitting unit for repair KR101064146B1 (en)

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PCT/KR2010/005736 WO2011105670A1 (en) 2010-02-26 2010-08-26 Surface-mounted light-emitting unit array, method for repairing same, and light-emitting unit for repairing same

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