JP2017092506A - Package for light emitting device, light emitting device including the same, and lighting system including light emitting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package for a light emitting device, suitable for mounting a plurality of light emitting elements and excellent in mountability using conductive paste.SOLUTION: A package (200) for a light emitting device of the present invention has a longitudinal direction (x) and a transverse direction (y) orthogonal to the longitudinal direction (x), in a top view, and includes first and second lead frames (11 and 12) lined up in the longitudinal direction (x), and a resin molded body (20) molded integrally with the first and second lead frames (11 and 12). The first lead frame (11) includes a body part (101) and an extension part (102) extending from the body part (101) to a side of the second lead frame (12) while width thereof becomes narrow. A depression (103) is provided in a lower face of the first lead frame (11), and at least a part of an exposed region (107) in a lower face of the extension part (102) is separated from an exposed region (105) in a lower face of the body part (101) by the resin molded body (20) filling the depression (103).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a package for a light emitting device (hereinafter sometimes simply referred to as “package”), a light emitting device, and a lighting device.

  For example, FIG. 25 of Patent Document 1 shows a body having a recess (a recess), first and second lead electrodes that are electrically isolated from the bottom surface of the recess, and first and first electrodes on the bottom surface of the recess. First and second light emitting diodes respectively disposed on the two lead electrodes, one end of the first lead electrode extending in the direction of the second lead electrode, and one end of the second lead electrode being the first lead A light emitting element is described which extends in the direction of the electrode.

JP 2011-249807 A

  However, when the exposed regions on the lower surfaces of the first and second lead electrodes have a distorted shape, the mounting property (secondary mounting) by the conductive paste is deteriorated.

  Therefore, the present invention has been made in view of such circumstances, and an object of the present invention is to provide a light emitting device package that is suitable for mounting a plurality of light emitting elements and is excellent in mountability using a conductive paste. .

  In order to solve the above-described problem, a package for a light emitting device according to the present invention has a longitudinal direction and a short direction perpendicular to the longitudinal direction in a top view, and is arranged in the longitudinal direction. And a second lead frame, and a resin molded body molded integrally with the first and second lead frames, wherein the first lead frame includes a main body portion, An extending portion that narrows and extends from the main body portion to the second lead frame side, and a recess is provided on a lower surface of the first lead frame, and the resin molding fills the recess The body is characterized in that at least a part of the exposed region on the lower surface of the extending portion is separated from the exposed region on the lower surface of the main body.

  According to the present invention, it is possible to obtain a package for a light emitting device in which wires connected to a lead frame can be formed relatively short, and which is excellent in mountability using a conductive paste.

FIG. 1 is a schematic top view (a) of a light emitting device according to an embodiment of the present invention, a schematic cross sectional view (b) taken along the line AA, and a schematic bottom view (c). They are the schematic top view (a) of the light-emitting device which concerns on one embodiment of this invention, the schematic sectional drawing (b) in the BB cross section, and a schematic bottom view (c). They are the schematic top view (a) of the light-emitting device which concerns on one embodiment of this invention, the schematic sectional drawing (b) in the CC cross section, and a schematic bottom view (c). It is a schematic top view (a) and (b) which shows an example of the arrangement | positioning form of the light-emitting device in the illuminating device which concerns on one embodiment of this invention.

  Hereinafter, embodiments of the invention will be described with reference to the drawings as appropriate. However, the light emitting device package, the light emitting device, and the lighting device described below are for embodying the technical idea of the present invention, and unless otherwise specified, the present invention is as follows. Not limited. The contents described in one embodiment and example are applicable to other embodiments and examples. In addition, the size, positional relationship, and the like of members illustrated in each drawing may be exaggerated for clarity of explanation.

<Embodiment 1>
1A and 1C are a schematic top view and a schematic bottom view, respectively, of the light-emitting device according to Embodiment 1, and FIG. 1B is a cross-sectional view taken along line AA in FIG. It is a schematic sectional drawing shown. As shown in FIG. 1, the light-emitting device 200 according to Embodiment 1 is mainly configured by mounting a light-emitting element 30 on a light-emitting device package 100 and sealing it with a sealing member 50. The sealing member 50 of this example contains the phosphor 60, but may be omitted.

  As shown in FIG. 1, the package 100 has a shape that is long in one direction when viewed from above. That is, the package 100 has a longitudinal direction and a lateral direction orthogonal to the longitudinal direction when viewed from above. More precisely, the longitudinal direction is a direction parallel to an end surface extending in the package longitudinal direction of the lead frame, that is, an end surface facing the short direction, when viewed from above. In FIG. 1, the longitudinal direction of the package is the x direction, the short direction is the y direction, and the up and down direction is the z direction. The x direction is the horizontal direction, the y direction is the vertical direction, and the z direction is the thickness (height) direction. Such a definition of the direction is also applied to a light emitting device package and a light emitting device according to another embodiment described below.

  As shown in FIG. 1, the package 100 includes two lead frames 11 and 12 and a resin molded body 20 formed integrally with the two lead frames. In more detail, the package 100 includes another lead frame 13 between the two lead frames 11 and 12, and the resin molded body 20 includes the three lead frames 11, 12, and 13. It is molded integrally. The two lead frames 11 and 12 are arranged in the longitudinal direction x of the package 100. Each of the lead frames 11, 12, and 13 has a long shape in the longitudinal direction x of the package, like the package 100. The lead frames 11, 12, and 13 are plate-shaped and are not substantially bent. The two lead frames 11 and 12, more specifically, the three lead frames 11, 12, and 13 are filled with a resin molding 20 in a separation area that is separated from each other, and the separation area is used as an electrically insulating area. The molded body 20 is integrally held. At least a part of the lower surfaces of the three lead frames 11, 12, and 13 is exposed from the resin molded body 20, and constitutes the lower surface of the package 100 together with the resin molded body 20. Thereby, it can be set as the package excellent in the mounting property by an electrically conductive paste, and excellent in heat dissipation. Note that the light emitting element is placed on the upper surface side of the package 100. Hereinafter, in the package 100, the right lead frame is the first lead frame 11, the left lead frame is the second lead frame 12, and the lead frame between them is the third lead frame 13.

  The resin molded body 20 has a rectangular shape that is long in the longitudinal direction x of the package in a top view. Further, the resin molded body 20 covers the end surfaces (excluding the suspension lead portion 104) of the two lead frames 11, 12 (more specifically, the three lead frames 11, 12, 13). Further, the resin molded body 20 covers a part (particularly, the peripheral portion) of the upper surface of the two lead frames 11 and 12 (more specifically, the three lead frames 11, 12, and 13). Further, the resin molded body 20 forms a recess for accommodating the light emitting element together with the two lead frames 11 and 12 (more specifically, the three lead frames 11, 12, and 13). Specifically, the bottom surface of the recess is constituted by the top surfaces of the lead frames 11, 12, and 13 and the surface of the resin molded body 20. The side wall surface of the recess (the inner surface of the recess side wall 23) is configured by the surface of the resin molded body 20. The side wall surface of the recess may be vertical, but in order to efficiently extract light emitted from the light emitting element, it is preferable that the opening be inclined so as to become narrower as it approaches the bottom surface of the recess. Here, a package having a recess is illustrated, but the recess, that is, the recess sidewall 23 can be omitted, and for example, a flat package can be used (the same applies to other embodiments described below). Is).

  The first lead frame 11 includes a main body portion 101 and an extending portion 102 that extends from the main body portion 101 toward the second lead frame 12 with a narrow width. A recess 103 is provided on the lower surface of the first lead frame 11, in this example, the lower surface of the extending portion 102. Further, the recess 103 is filled with the resin molded body 20. Thereby, at least a part of the exposed region 107 on the lower surface of the extending portion 102 is separated from the exposed region 105 on the lower surface of the main body 101 by the resin molded body 20 filling the recess 103.

  Here, the main body 101 can be regarded as a main part of the lead frame including an upper surface region on which the light emitting element is placed. The stretched portion 102 is preferably stretched with a substantially constant width (width in the short direction y) in order to obtain a suitable shape of the exposed region of the lower surface, but may be changed. The boundary between the main body part 101 and the extending part 102 can be considered as a straight line parallel to the short direction y passing through the width change point, for example. Note that the depth of the recess 103 is preferably about 0.1 mm or more and about half or less of the maximum thickness of the lead frame from the viewpoint of resin filling and lead frame strength.

  The package 100 configured as described above is formed in an island shape in which at least a part of the exposed region 105 on the lower surface of the main body portion of the first lead frame 11 and the exposed region 107 on the lower surface of the extending portion are separated from each other. The symmetry of the exposed area on the lower surface of the frame and the uniformity of the area can be improved. As a result, when the package 100 is mounted on the mounting member with the conductive paste, the bias of the conductive paste can be suppressed, and the package 100 can be prevented from being inclined and mounted. In addition, the self-alignment property of the package 100 can be improved.

  In addition, since the extending portion 102 of the first lead frame 11 extends toward the second lead frame 12, the wire 40 for the light emitting element 30 and the protective element 70 is connected to the upper surface of the extending portion 102. The protective element 70 can be installed, and the wire 40 can be formed relatively short. Thereby, the light absorption by the wire 40 can be reduced and the light extraction efficiency can be increased.

  The two lead frames 11 and 12 may have different maximum widths (the maximum width in the short direction y; for example, the width of the main body of the lead frame), but the maximum widths are preferably substantially the same. . The two lead frames 11 and 12 may be disposed in an oblique relationship with each other when viewed from above, but are preferably disposed substantially in parallel. Furthermore, the two lead frames 11 and 12 may be arranged in such a relationship that central axes parallel to the longitudinal direction x in the top view are displaced from each other in the short direction y, but parallel to the longitudinal direction x in the top view. It is preferable that the central axes are arranged so as to substantially coincide with each other.

  Hereinafter, preferred embodiments of the light emitting device package 100 and the light emitting device 200 will be described.

  As shown in FIG. 1, it is preferable that substantially the entire exposed region 107 on the lower surface of the extending portion 102 is separated from the exposed region 105 on the lower surface of the main body 101 by a resin molding 20 that fills the recess 103. In such a configuration, the depression 103 is provided in close contact with the main body 101 on the lower surface of the extending portion 102 as shown in the figure, or is provided in close contact with the extending portion 102 on the lower surface of the main body 101. It can be realized by either being provided on the boundary between 101 and the extending portion 102. As described above, the depression 103 is provided in the vicinity of the boundary between the main body portion 101 and the extending portion 102, so that the exposed region 105 on the lower surface of the main body portion 101 and the exposed region 107 on the lower surface of the extending portion 102 are clearly separated. can do. Thereby, the exposed regions 105 and 107 on the lower surfaces of the main body 101 and the extending portion 102 can be suitably shaped, and the symmetry and area uniformity of the exposed regions on the lower surface of the lead frame can be further improved. Moreover, the self-alignment property of the package can be further improved.

  As shown in FIG. 1, in the package 100, only the first lead frame 11 has an extending portion 102. The package 100 includes a third lead frame 13 disposed so as to face the extending portion 102 of the first lead frame in the short direction y. At least a part of the lower surface of the third lead frame 13 is exposed from the resin molded body 20. According to such a configuration, the exposed area 109 on the lower surface of the third lead frame is provided so as to face the exposed area 107 on the lower surface of the extending portion of the first lead frame. It is possible to improve the symmetry of the region and the uniformity of the area.

  As shown in FIG. 1, the exposed region 107 on the lower surface of the extending portion of the first lead frame is provided in a substantially rectangular shape. Thereby, it is easy to improve the symmetry of the exposed area on the lower surface of the lead frame and the uniformity of the area. In addition, the self-alignment property of the package 100 can be easily improved. The exposed area 109 on the lower surface of the third lead frame 13 is also provided in a substantially rectangular shape. As a result, it is possible to achieve uniformity with the exposed region 107 on the lower surface of the extending portion of the first lead frame, and to improve the symmetry and area uniformity of the exposed region on the lower surface of the lead frame. In addition, the self-alignment property of the package can be improved. Furthermore, as shown in the drawing, it is more preferable that the exposed region 109 on the lower surface of the third lead frame 13 is provided in substantially the same shape as the exposed region 107 on the lower surface of the extending portion of the first lead frame. Further, the exposed region 105 on the lower surface of the main body portion of the first lead frame and the exposed region 106 on the lower surface (a portion that can also be regarded as the main body portion) of the second lead frame 12 are also provided in a substantially rectangular shape. Thereby, it is possible to further improve the symmetry of the exposed region on the lower surface of the lead frame, the uniformity of the area, and the self-alignment property of the package. In addition, on the lower surface side of the package 100, the exposed region of the lower surface of the lead frame is provided substantially in line symmetry in the lateral direction y (vertical direction) with respect to the central axis of the package when viewed as an overall pattern. . Thereby, the symmetry of the exposed area on the lower surface of the lead frame and the uniformity of the area can be further enhanced. In addition, the self-alignment property of the package can be further enhanced. Furthermore, on the lower surface side of the package 100, the exposed region of the lower surface of the lead frame is provided substantially symmetrical with respect to the longitudinal direction x (lateral direction) with respect to the central axis of the package when viewed as an overall pattern. . Thereby, the symmetry of the exposed area on the lower surface of the lead frame and the uniformity of the area can be further enhanced. In addition, the self-alignment property of the package 100 can be further enhanced. Each exposed area on the lower surface of the lead frame may be rounded or cut off at the corners by chamfering the lead frame or the like.

  As shown in FIG. 1, the extending portion 102 of the first lead frame is located at the approximate center of the package 100. As described above, since the extending portion 102 is positioned at substantially the center of the package 100, it is easy to place the light emitting element on each of the two lead frames 11 and 12, and to easily control the light distribution characteristics. In the package 100, the third lead frame 13 is disposed so as to face the extending portion 102 in the short direction y. Therefore, even if the light emitting element 30 is placed on each of the first and second lead frames 11 and 12, the wire 40 connected to the third lead frame can be formed relatively short. It is easy to increase the light extraction efficiency. Further, in the case of a light emitting device including the protective element 70, the protective element 70 is provided on the upper surface of the extending portion 102 of the first lead frame, so that the interval between the light emitting element 30 and the protective element 70 can be easily increased. It is easy to increase the light extraction efficiency by reducing the light absorption due to. In addition, since the wire 40 connecting the protection element 70 and the second lead frame 12 can be formed relatively short, light absorption by the wire 40 can be reduced, and the light extraction efficiency can be further enhanced.

  As shown in FIG. 1, the light emitting device 200 includes a light emitting device package 100 and light emitting elements 30 and 30 mounted on the upper surfaces of the first and second lead frames 11 and 12, respectively. As described above, the light emitting element 30 is placed on each of the first and second lead frames 11 and 12, so that the distance between the two light emitting elements 30 can be relatively large, and preferable light distribution characteristics are obtained. Can be obtained.

  As shown in FIG. 1, in the light emitting device 200, the upper surface of the third lead frame 13 is connected to the light emitting element 30 placed on the first lead frame 11 by a wire 40, and further the second lead frame. 12 is connected to the light emitting element 30 placed on the wire 12 by a wire 40. As described above, the third lead frame 13 can be suitably used for connecting the light emitting elements 30 mounted on the first and second lead frames 11 and 12 in series by the wires 40. The wire 40 can be formed relatively short.

  As shown in FIG. 1, the light emitting device 200 includes a protective element 70 placed on the upper surface of the extending portion 102 of the first lead frame. The protective element 70 is connected to the upper surface of the second lead frame 12 by a wire 40. As described above, the extending portion 102 of the first lead frame can be suitably used for mounting the protection element 70. Since the protective element 70 is provided on the upper surface of the extending portion 102 of the first lead frame, the interval between the light emitting element 30 and the protective element 70 can be easily increased, light absorption by the protective element 70 can be reduced, and light extraction efficiency can be increased. Easy to increase. In addition, since the wire 40 connecting the protection element 70 and the second lead frame 12 can be formed relatively short, light absorption by the wire 40 can be reduced, and the light extraction efficiency can be further enhanced.

<Embodiment 2>
2A and 2C are a schematic top view and a schematic bottom view, respectively, of the light-emitting device according to Embodiment 2, and FIG. 2B is a cross-sectional view taken along line BB in FIG. It is a schematic sectional drawing shown. As shown in FIG. 2, the light emitting device 220 according to Embodiment 2 is mainly configured by mounting the light emitting element 30 on the light emitting device package 120 and sealing it with a sealing member 50. The sealing member 50 of this example contains the phosphor 60, but may be omitted.

  As shown in FIG. 2, the package 120 includes five lead frames 11, 12, 13, 14, and 15, and a resin molded body 20 that is molded integrally with the five lead frames. The five lead frames 11, 12, 13, 14, 15 are arranged in the longitudinal direction x of the package 120. Each of the five lead frames 11, 12, 13, 14, 15 has an elongated shape in the longitudinal direction x of the package, like the package 120. The lead frames 11, 12, 13, 14, and 15 are plate-shaped and are not substantially bent. The five lead frames 11, 12, 13, 14, 15 are integrally held in the resin molded body 20, with the spaced regions spaced apart from each other buried in the resin molded body 20. Has been. At least a part of the lower surfaces of the five lead frames 11, 12, 13, 14, 15 is exposed from the resin molded body 20, and constitutes the lower surface of the package 120 together with the resin molded body 20. Thereby, it can be set as the package excellent in the mounting property by an electrically conductive paste, and excellent in heat dissipation. Note that the light emitting element is placed on the upper surface side of the package 120. Hereinafter, in the package 120, the central lead frame is the first lead frame 11, the leftmost lead frame is the second lead frame 12, and the lead frame between the first lead frame 11 and the second lead frame 12. Is the third lead frame 13, the rightmost lead frame is the fourth lead frame 14, and the lead frame between the first lead frame 11 and the fourth lead frame 14 is the fifth lead frame 15.

  The resin molded body 20 has a rectangular shape that is long in the longitudinal direction x of the package in a top view. Further, the resin molded body 20 covers the end surfaces (except for the suspension lead portion 104) of the five lead frames 11, 12, 13, 14, and 15. Further, the resin molded body 20 covers a part (particularly the peripheral portion) of the upper surface of the five lead frames 11, 12, 13, 14, 15. Further, the resin molded body 20 forms a recess for accommodating the light emitting element together with the five lead frames 11, 12, 13, 14, 15. Specifically, the bottom surface of the recess is constituted by the top surfaces of the lead frames 11, 12, 13, 14, 15 and the surface of the resin molded body 20. The side wall surface of the recess (the inner surface of the recess side wall 23) is configured by the surface of the resin molded body 20. The side wall surface of the recess may be vertical, but in order to efficiently extract light emitted from the light emitting element, it is preferable that the opening be inclined so as to become narrower as it approaches the bottom surface of the recess.

  The first lead frame 11 includes a main body portion 101 and a first extending portion 102 that extends from the main body portion 101 toward the second lead frame 12 with a narrow width. Further, the first lead frame 11 has a second extending portion 102 that extends from the main body portion 101 toward the fourth lead frame 14 with a narrow width. A recess 103 is provided on the lower surface of the first lead frame 11 and on the lower surfaces of the first and second extending portions 102 in this example. Further, the recess 103 is filled with the resin molded body 20. Thereby, at least a part of the exposed region 107 on the lower surface of the first and second extending portions 102 is separated from the exposed region 105 on the lower surface of the main body 101 by the resin molding 20 filling the recess 103, respectively. .

  In the package 120 configured as described above, at least a part of the exposed region 105 on the lower surface of the main body portion of the first lead frame 11 and the exposed region 107 on the lower surface of the first and second extending portions are separated from each other. It is formed in an island shape, and the symmetry and area uniformity of the exposed region on the lower surface of the lead frame can be improved. As a result, when the package 120 is mounted on the mounting member with the conductive paste, the bias of the conductive paste can be suppressed, and the package 120 can be prevented from being inclined and mounted. In addition, the self-alignment property of the package 120 can be improved.

  Further, since the first and second extending portions 102 of the first lead frame 11 extend to the second and fourth lead frames 12 and 14, respectively, the light emitting element is formed on the upper surface of each extending portion 102. 30 or the wire 40 for the protective element 70 can be connected, or the protective element 70 can be installed, and the wire 40 can be formed relatively short. Thereby, the light absorption by the wire 40 can be reduced and the light extraction efficiency can be increased.

  The first, second, and fourth lead frames 11, 12, and 14 may have different maximum widths (maximum width in the short direction y; for example, the width of the main body of the lead frame). It is preferred that they are substantially the same. The first, second, and fourth lead frames 11, 12, and 14 may be disposed in an oblique relationship with each other when viewed from above, but are preferably disposed substantially in parallel. Furthermore, the first, second, and fourth lead frames 11, 12, and 14 may be arranged in such a relationship that central axes parallel to the longitudinal direction x in the top view are displaced from each other in the lateral direction. It is preferable that the central axes parallel to the longitudinal direction x are substantially aligned with each other when viewed from above.

  Hereinafter, preferred embodiments of the light emitting device package 120 and the light emitting device 220 will be described.

  As shown in FIG. 2, in the package 120, only the first lead frame 11 has the extending portion 102. In the package 120, the third and fifth lead frames are arranged so as to face the first and second extending portions 102 of the first lead frame in the short direction y, respectively. According to such a configuration, the exposed areas 109 on the lower surfaces of the third and fifth lead frames respectively face the exposed areas 107 on the lower surfaces of the first and second extending portions of the first lead frame. Therefore, it is possible to improve the symmetry and area uniformity of the exposed region of the lower surface of the lead frame.

  As shown in FIG. 2, in the package 120, the exposed region 107 on the lower surface of the first and second extending portions of the first lead frame is provided in a substantially rectangular shape. Further, the exposed areas 109 on the lower surfaces of the third and fifth lead frames 13 and 15 are also provided in a substantially rectangular shape. Further, the exposed region 105 on the lower surface of the main body portion of the first lead frame and the exposed region 106 on the lower surface (parts regarded as the main body portion) of the second and fourth lead frames 12 and 14 are also substantially rectangular. Is provided. Furthermore, on the lower surface side of the package 120, the exposed area of the lower surface of the lead frame is viewed in the short direction y (vertical direction) and the longitudinal direction x (lateral direction) with respect to the central axis of the package when viewed as an overall pattern. ) Is also substantially line symmetrical. With such a configuration, as in the first embodiment, the symmetry and area uniformity of the exposed region of the lower surface of the lead frame can be easily improved, and the self-alignment property of the package 120 can be easily improved. Each exposed area on the lower surface of the lead frame may be rounded or cut off at the corners by chamfering the lead frame or the like.

  As shown in FIG. 2, in the light emitting device 220, the upper surface of the third lead frame 13 is connected to the light emitting element 30 placed on the first lead frame 11 by the wire 40, and further the second lead frame. 12 is connected to the light emitting element 30 placed on the wire 12 by a wire 40. The upper surface of the fifth lead frame 15 is connected to the light emitting element 30 placed on the first lead frame 11 and the wire 40, and the light emitting element 30 placed on the fourth lead frame 14 and the wire 40. Connected by. Thereby, the three light emitting elements 30 are connected in series. As described above, the third and fifth lead frames 13 and 15 are connected in series by the wire 40 with the light emitting elements 30 mounted on the first, second and fourth lead frames 11, 12 and 14, respectively. The wire 40 can be formed relatively short.

  As shown in FIG. 2, in the light emitting device 220, the protective element 70 is placed on the upper surface of the first extending portion 102 of the first lead frame, and is connected to the second lead frame 12 by the wire 40. Has been. Thereby, the wire 40 connecting the protection element 70 and the lead frame can be formed relatively short, light absorption by the wire 40 can be reduced, and the light extraction efficiency can be further enhanced. Further, the upper surface of the second extending portion 102 of the first lead frame and the upper surface of the fourth lead frame are connected by a wire 40. Thereby, the protection element 70 can be connected in parallel to the light emitting element 30. In the package 120, the second lead portion 102 of the first lead frame and the fourth lead frame 14 are connected, and the first lead frame 11 and the fourth lead frame 14 are connected. It may be provided integrally.

<Embodiment 3>
3A and 3C are a schematic top view and a schematic bottom view of the light-emitting device according to Embodiment 3, respectively, and FIG. 3B is a cross-sectional view taken along the line CC in FIG. It is a schematic sectional drawing shown. As shown in FIG. 3, the light-emitting device 230 according to Embodiment 3 is mainly configured by mounting the light-emitting element 30 on a light-emitting device package 130 and sealing it with a sealing member 50. The sealing member 50 of this example contains the phosphor 60, but may be omitted.

  As shown in FIG. 3, the package 130 includes two lead frames 11 and 12 and a resin molded body 20 molded integrally with the two lead frames. The two lead frames 11 and 12 are arranged in the longitudinal direction x of the package 130. Each of the lead frames 11 and 12 has a long shape in the longitudinal direction x of the package, like the package 130. The lead frames 11 and 12 are plate-shaped and are not substantially bent. The two lead frames 11 and 12 are integrally held in the resin molded body 20 with a spaced region that is spaced apart from each other being buried in the resin molded body 20, and this separated region is used as an electrically insulating region. At least a part of the lower surfaces of the two lead frames 11 and 12 is exposed from the resin molded body 20 and constitutes the lower surface of the package 130 together with the resin molded body 20. Thereby, it can be set as the package excellent in the mounting property by an electrically conductive paste, and excellent in heat dissipation. Note that the light emitting element is placed on the upper surface side of the package 130. Hereinafter, in the package 130, the right lead frame is referred to as the first lead frame 11, and the left lead frame is referred to as the second lead frame 12.

  The resin molded body 20 has a rectangular shape that is long in the longitudinal direction x of the package in a top view. The resin molded body 20 covers the end surfaces of the two lead frames 11 and 12 (excluding the suspension lead portion 104). Further, the resin molded body 20 covers a part (particularly, the peripheral portion) of the upper surfaces of the two lead frames 11 and 12. Further, the resin molded body 20 forms a recess for accommodating the light emitting element together with the two lead frames 11 and 12. Specifically, the bottom surface of the recess is constituted by the top surfaces of the lead frames 11 and 12 and the surface of the resin molded body 20. The side wall surface of the recess (the inner surface of the recess side wall 23) is configured by the surface of the resin molded body 20. The side wall surface of the recess may be vertical, but in order to efficiently extract light emitted from the light emitting element, it is preferable that the opening be inclined so as to become narrower as it approaches the bottom surface of the recess.

  The first lead frame 11 includes a main body portion 101 and an extending portion 102 that extends from the main body portion 101 toward the second lead frame 12 with a narrow width. A depression 103 is provided on the lower surface of the extending portion 102. Further, the recess 103 is filled with the resin molded body 20. Thereby, at least a part of the exposed region 107 on the lower surface of the extending portion 102 is separated from the exposed region 105 on the lower surface of the main body 101 by the resin molded body 20 filling the recess 103.

  The package 130 configured as described above is formed in an island shape in which at least a part of the exposed region 105 on the lower surface of the main body 101 of the first lead frame 11 and the exposed region 107 on the lower surface of the extending portion 102 are separated from each other. Further, it is possible to improve the symmetry of the exposed region on the lower surface of the lead frame and the uniformity of the area. Accordingly, when the package 130 is mounted on the mounting member with the conductive paste, the bias of the conductive paste can be suppressed, and the package 130 can be prevented from being inclined and mounted. In addition, the self-alignment property of the package 130 can be improved.

  In addition, since the extending portion 102 of the first lead frame 11 extends toward the second lead frame 12, the wire 40 for the light emitting element 30 and the protective element 70 is connected to the upper surface of the extending portion 102. The protective element 70 can be installed, and the wire 40 can be formed relatively short. Thereby, the light absorption by the wire 40 can be reduced and the light extraction efficiency can be increased.

  The two lead frames 11 and 12 may have different maximum widths (the maximum width in the short direction y; for example, the width of the main body of the lead frame), but the maximum widths are preferably substantially the same. . The two lead frames 11 and 12 may be disposed in an oblique relationship with each other when viewed from above, but are preferably disposed substantially in parallel. Furthermore, the two lead frames 11 and 12 may be arranged in such a relationship that central axes parallel to the longitudinal direction x in the top view are displaced from each other in the short side direction, but parallel to the longitudinal direction x in the top view. The central axes are preferably arranged so as to substantially coincide.

  Hereinafter, preferred embodiments of the light emitting device package 130 and the light emitting device 230 will be described.

  As shown in FIG. 3, in the package 130, the second lead frame 12 includes a main body portion 101 and an extending portion 102 that extends from the main body portion 101 toward the first lead frame 11 so as to narrow. doing. A recess 103 is provided on the lower surface of the second lead frame 12. Further, the recess 103 is filled with the resin molded body 20. Accordingly, at least a part of the exposed region 107 on the lower surface of the extending portion 102 of the second lead frame 12 is formed by the resin molded body 20 filling the recess 103 of the second lead frame 12, so that the main body of the second lead frame 12. It is separated from the exposed region 105 on the lower surface of the portion 101. The extending portions 102 of the first and second lead frames 11 and 12 are arranged to face each other in the short direction y.

  According to such a configuration, in addition to the first lead frame 11, at least a part of the exposed region 105 on the lower surface of the main body portion of the second lead frame 12 and the exposed region 107 on the lower surface of the extending portion are also separated from each other. It is formed in an island shape, and it is easy to improve the symmetry and area uniformity of the exposed region on the lower surface of the lead frame. Accordingly, when the package 130 is mounted on the mounting member with the conductive paste, the bias of the conductive paste can be suppressed, and the package 130 can be easily prevented from being inclined. In addition, the self-alignment property of the package 130 can be easily improved. Furthermore, the exposed region 107 on the lower surface of the extending portion 102 of the first lead frame 11 and the exposed region 107 on the lower surface of the extending portion 102 of the second lead frame 12 are provided so as to face each other. It is possible to improve the symmetry of the exposed area on the lower surface and the uniformity of the area. Further, as shown in the figure, when the exposed region 107 on the lower surface of the extending portion of the first lead frame 11 is provided in substantially the same shape as the exposed region 107 on the lower surface of the extending portion of the second lead frame 12, good.

  As shown in FIG. 3, in the package 130, the exposed region 107 on the lower surface of the extending portion of the first and second lead frames 11 and 12 is provided in a substantially rectangular shape. The exposed region 105 on the lower surface of the main body of the first and second lead frames 11 and 12 is also provided in a substantially rectangular shape. Furthermore, on the lower surface side of the package 130, the exposed area of the lower surface of the lead frame is viewed in the short direction y (vertical direction) in the short direction y (vertical direction) with respect to the central axis of the package. ) Is also substantially line symmetrical. With such a configuration, as in the first embodiment, it is easy to improve the symmetry and area uniformity of the exposed region of the lower surface of the lead frame, and to improve the self-alignment of the package 130. Each exposed area on the lower surface of the lead frame may be rounded or cut off at the corners by chamfering the lead frame or the like.

  Further, in the light emitting device 230, the extending portion 102 of the first lead frame 11 is connected to the light emitting element 30 placed on the second lead frame 12 by the wire 40, and the extending portion of the second lead frame 12. Reference numeral 102 denotes a wire 40 connected to the light emitting element 30 placed on the first lead frame 11. As described above, the extending portions 102 of the first and second lead frames 11 and 12 connect the light emitting elements 30 placed on the first and second lead frames 11 and 12 in parallel by the wires 40. Therefore, the wire 40 can be formed relatively short.

  Further, in the light emitting device 230, the protective element 70 is placed on the upper surface of the extending portion 102 of the first lead frame. The protective element 70 is connected to the upper surface of the extending portion 102 of the second lead frame 12 by the wire 40. As described above, the extending portions 102 of the first and second lead frames can be suitably used for mounting the protection element 70. As a result, the distance between the light emitting element 30 and the protective element 70 can be easily increased, light absorption by the protective element 70 can be reduced, and the light extraction efficiency can be easily increased. Further, since the wire 40 that connects the protection element 70 and the lead frame (here, the second lead frame 12) can be formed relatively short, light absorption by the wire 40 can be reduced, and the light extraction efficiency can be further enhanced.

  As shown in FIG. 3, on the upper surface side of the package 130, the resin molded body 20 includes at least part of the main body portion 101 of the first lead frame 11 and the upper surface of the extending portion 102 of the first lead frame 11. 2 and at least a part of the lead frame 12 side is exposed, and an intermediate wall portion 25 provided to extend in the short-side direction y is provided. Therefore, the main body 101 of the first lead frame 11 and the main body 101 of the second lead frame 11 can be separated by the intermediate wall 25 while maintaining the function of the upper surface of the extending portion 102. Thereby, the light emitted from the light emitting element 30 is reflected upward by the intermediate wall portion 25, and the light emitting element 30 and the protection element 70 placed across the intermediate wall portion 25 and the wire 40 connected to them are used. Light absorption can be reduced and light extraction efficiency can be increased. Further, the intermediate wall portion 25 is continuously formed on the concave side wall 23 of the resin molded body 20. Accordingly, the intermediate wall portion 25 acts to press down the upper surface of the lead frame such as the first lead frame 11 and can suppress the peeling of the lead frame 11 from the resin molded body 20. The intermediate wall portion 25 can be provided on at least one of the first lead frame 11 side and the second lead frame 12 side.

  As shown in FIG. 3, the intermediate wall portion 25 is preferably provided on the extending portion 102 of the first lead frame 11. Since the extending portion 102 is provided near the center of the package or near the separation region between the two lead frames, the intermediate wall portion 25 can easily divide the device mounting region of the package, for example, in the recess, thereby making it preferable. Light distribution characteristics can be obtained. Further, since the intermediate wall portion 25 acts so as to press the extending portion 102, it is possible to effectively suppress the peeling of the lead frame from the resin molded body 20.

  In the example illustrated in FIG. 3, the intermediate wall portion 25 includes a first wall portion and a second wall portion provided across the extending portions 102 of the first and second lead frames 11 and 12. It is out. The upper surfaces of the extending portions 102 of the first and second lead frames 11 and 12 are divided into three exposed regions by the first wall portion and the second wall portion, respectively. Further, the inside of the recess is divided into three regions including a left region, a central region, and a right region in the longitudinal direction x. Therefore, the extending tip portions of the extending portions 102 of the first and second lead frames 11 and 12 are exposed in the left region and the right region, respectively. And the wire 40 connected with the light emitting element 30 is connected to the extending | stretching front-end | tip part of each extending | stretching part 102. As shown in FIG. Thus, the light emitting elements 30 can be connected in parallel with the relatively short wire 40 while avoiding the wire 40 straddling the intermediate wall portion 25. A protection element 70 is provided in the central region in the recess. Thus, by providing the intermediate wall portion 25, that is, the first wall portion and the second wall portion so as to sandwich the protection element 70, light absorption by the protection element 70 and the wire 40 connected to the protection element 70 is reduced, and the light The take-out efficiency can be increased. When the wire 40 straddles the intermediate wall portion 25, the height is preferably smaller than the depth of the recess. However, when the wire 40 can be prevented from straddling the intermediate wall portion 25, the resin molding 20 It is preferable that the height is substantially the same as the upper surface (the upper surface of the concave sidewall 23).

  Note that the intermediate wall portion 25 can also be applied to the light emitting device package of other embodiments. For example, in the package 100 of the first embodiment, the intermediate wall portion 25 may be provided in the approximate center of the package. Further, for example, in the package 120 of the second embodiment, the third lead frame 13 is approximately in the center (also the approximate center of the first extension portion 102 of the first lead frame) and / or in the fifth lead frame 15. The intermediate wall portion 25 may be provided at approximately the center (also approximately the center of the second extending portion 102 of the first lead frame). Further, the intermediate wall portion 25 may fill the protection element 70 and the wire 40 connected thereto.

<Embodiment 4>
FIGS. 4A and 4B are schematic top views showing an example of the arrangement of the light emitting devices in the illumination device according to Embodiment 4. FIGS. The lighting device illustrated in FIG. 4 includes a plurality of light emitting devices and a mounting member on which the light emitting devices are mounted. Note that the light-emitting device is mounted on the mounting member using a conductive paste.

  In the illumination device 300 in the example shown in FIG. 4A, a plurality of light emitting devices 201 to 203 are one-dimensionally juxtaposed on the mounting member 80. More specifically, in the lighting device 300, three light emitting devices 201, 202, and 203 are arranged at substantially equal intervals in the longitudinal direction of the package. 4B includes a plurality of light emitting devices 201 to 208 that are two-dimensionally arranged on the mounting member 80. More specifically, in the lighting device 320, two light emitting devices 201 to 208 are arranged at substantially equal intervals, two in the longitudinal direction of the package and four in the lateral direction. Arbitrary (for example, known) light-emitting devices can be applied to the light-emitting devices 201 to 208 used in these lighting devices 300 and 320, but the light-emitting devices of the present invention (for example, those of Embodiments 1 to 3). The light emitting devices 200, 220, 230) are preferably applied. Note that the number of mounted light emitting devices in one lighting device and the number of mounted light emitting elements in one light emitting device are merely examples.

As shown in FIGS. 4A and 4B, in the longitudinal direction of the package, the first light emitting element 30-2 disposed closest to the second light emitting device 202 in the first light emitting device 201; The distance d ₁ between the second light emitting device 202 and the second light emitting element 30-3 disposed closest to the first light emitting device 201 is equal to the first light emitting element 30 in the first light emitting device 201. substantially equal to -2, and the first third of the light emitting element 30-1 is disposed adjacent to the light emitting element 30-2, a distance _{p 1} of. Thereby, it is possible to make the luminance distribution uniform between adjacent light emitting devices. In the example shown in FIG. 4B, the first light emitting element 30-2 (or the third light emitting element 30-1) in the first light emitting device 201 may be used in the short direction of the package. The distance s ₁ between the third light emitting device 203 and the fifth light emitting element 30-5 (or the sixth light emitting element 30-6) is substantially equal to the distance d ₁ . The same applies to the interval s ₂ and the interval s ₃ related to the adjacent and further adjacent light emitting devices.

Furthermore, as shown in FIGS. 4A and 4B, in the longitudinal direction of the package, the interval p ₁ between the light emitting elements 30-1 and 30-2 included in the first light emitting device 201 is the second substantially equal to the distance _{p 2} of the light emitting elements 30-3 and 30-4 between which the light emitting device 202 is provided. Thereby, it can be considered that the light emitting elements included in the light emitting devices are arranged at substantially equal intervals while the plurality of light emitting elements are respectively mounted on different light emitting devices (packages). Therefore, the luminance distribution of the lighting device can be further uniformed.

  In this way, in order to arrange the light emitting elements mounted on different light emitting devices so that they can be regarded as being substantially equally spaced on the mounting member, the distance between the light emitting elements mounted on one light emitting device is relatively large. It is preferable to set aside. However, when the interval between the light emitting elements is increased, the wires connected to the light emitting elements and the protective elements are easily formed long. However, the light-emitting device (package) of the present invention can be suitably used for such a lighting device because the wires connected to the light-emitting element and the protective element can be formed relatively short. Furthermore, by suppressing the bias of the conductive paste and high self-alignment, it is possible to suppress the rotation and inclination of the package and mount it on the mounting member in a preferable posture. Excellent light distribution characteristics with high accuracy.

  Hereinafter, each component of the light emitting device package, the light emitting device, and the lighting device of the present invention will be described.

(Lead frames 11, 12, 13, 14, 15)
For the lead frame, a metal member that is connected to the light emitting element or the protective element and can be conductive can be used. Specifically, copper, aluminum, gold, silver, tungsten, iron, nickel, cobalt, molybdenum, or alloys thereof, phosphor bronze, iron-containing copper, and other metal plates such as pressing, etching, rolling, etc. What you gave. Further, the surface layer may be provided with a plating such as silver, aluminum, rhodium, gold, copper, or an alloy thereof, or a light reflection film, and among them, silver that is most excellent in light reflectivity is preferable. Although the thickness of the lead frame can be arbitrarily selected, it is, for example, 0.1 mm or more and 1 mm or less, preferably 0.2 mm or more and 0.4 mm or less. In addition, as shown in FIGS. 1 to 3, for example, as shown in FIGS. 1 to 3, a groove or a recess is provided in a portion that contacts the resin molded body at the periphery of the upper surface or the lower surface of the lead frame. It is possible to suppress moisture from entering from the lower surface side of the lead frame, and to improve the adhesion to the resin molded body.

(Resin molding 20)
The base material of the resin molding is a thermosetting resin such as polybismaleimide triazine resin, epoxy resin, silicone resin, silicone modified resin, silicone modified resin, polyimide resin, polyurethane resin, aliphatic polyamide resin, semi-aromatic polyamide Examples thereof include thermoplastic resins such as resin, polyethylene terephthalate, polycyclohexane terephthalate, liquid crystal polymer, polycarbonate resin, syndiotactic polystyrene, polyphenylene ether, polyphenylene sulfide, polyethersulfone resin, polyetherketone resin, and polyarylate resin. In these base materials, as a filler or a coloring pigment, glass, silica, titanium oxide, magnesium oxide, magnesium carbonate, magnesium hydroxide, calcium carbonate, calcium hydroxide, calcium silicate, magnesium silicate, wollastonite, Mica, zinc oxide, barium titanate, potassium titanate, aluminum borate, aluminum oxide, zinc oxide, silicon carbide, antimony oxide, zinc stannate, zinc borate, iron oxide, chromium oxide, manganese oxide, carbon black, etc. Particles or fibers can be incorporated.

(Light emitting element 30)
As the light emitting element, a semiconductor light emitting element such as a light emitting diode (LED) element or a semiconductor laser (Laser Diode: LD) element can be used. The light emitting element may be any element in which a pair of positive and negative electrodes is provided in an element structure composed of various semiconductors. In particular, a light-emitting element of a nitride semiconductor (In _x Al _y Ga _1-xy N, 0 ≦ x, 0 ≦ y, x + y ≦ 1) that can excite the phosphor efficiently is preferable. In addition, a gallium arsenide-based or gallium phosphorus-based semiconductor light emitting element emitting green to red light may be used. In the case of a light emitting device in which a pair of positive and negative electrodes are provided on the same surface side, each electrode is connected to a lead frame with a wire and mounted face up. In the case of a light emitting device having a counter electrode structure in which a pair of positive and negative electrodes are provided on opposite surfaces, the lower electrode is bonded to the lead frame with a conductive adhesive, and the upper electrode is connected to the lead frame with a wire. The same applies to the mounting form of the protective element described later. Further, by providing a metal layer such as silver or aluminum or a dielectric reflection film on the mounting surface side of the light emitting element, light extraction efficiency can be increased. The number of light emitting elements mounted on one light emitting device package may be one or more, and the size, shape, and emission wavelength may be arbitrarily selected. The plurality of light emitting elements can be connected in series or in parallel by a lead frame or a wire. In addition, a single light emitting device package may include a combination of light emitting elements such as blue light emission and red light emission, blue light emission and green light emission, and blue / green / red light emission. .

(Wire 40)
The wire is a conductive wire that connects the electrode of the light emitting element or the electrode of the protective element and the lead frame. Specifically, gold, copper, silver, platinum, aluminum, or a metal wire of these alloys can be used. In particular, a gold wire that is unlikely to break due to stress from the sealing member and is excellent in thermal resistance or the like is preferable. Moreover, in order to improve light reflectivity, at least the surface may be comprised with silver.

(Sealing member 50)
The sealing member is a member that seals the light emitting element, the protective element, the wire, and the like to protect them from dust, moisture, external force, and the like. The base material of the sealing member may be any material as long as it has electrical insulation and can transmit light emitted from the light emitting element (preferably a transmittance of 70% or more). Specifically, a silicone resin, an epoxy resin, a phenol resin, a polycarbonate resin, an acrylic resin, a TPX resin, a polynorbornene resin, a modified resin thereof, or a hybrid resin containing one or more of these resins can be given. Glass may be used. Of these, silicone resins are preferred because they are excellent in heat resistance and light resistance and have little volume shrinkage after solidification. In addition, the sealing member may include particles having various functions such as a filler and a phosphor in the base material. As the filler, a diffusing agent, a coloring agent, or the like can be used. Specifically, silica, titanium oxide, magnesium oxide, magnesium carbonate, magnesium hydroxide, calcium carbonate, calcium hydroxide, calcium silicate, zinc oxide, barium titanate, aluminum oxide, iron oxide, chromium oxide, manganese oxide, glass And carbon black. The shape of the filler particles may be crushed or spherical. Further, it may be hollow or porous.

(Phosphor 60)
The phosphor absorbs at least part of the primary light emitted from the light emitting element, and emits secondary light having a wavelength different from that of the primary light. The phosphor is, for example, a nitride-based phosphor / oxynitride-based phosphor mainly activated by a lanthanoid element such as europium or cerium, more specifically, an α or β sialon-type fluorescence activated by europium. Bodies, various alkaline earth metal nitride silicate phosphors, lanthanoid elements such as europium, alkaline earth metal halogenapatite phosphors mainly activated by transition metal elements such as manganese, alkaline earth halosilicate phosphors, Alkaline earth metal silicate phosphor, alkaline earth metal halogen borate phosphor, alkaline earth metal aluminate phosphor, alkaline earth metal silicate, alkaline earth metal sulfide, alkaline earth metal thiogallate, alkali Rare earths mainly activated by lanthanoid elements such as earth metal silicon nitride, germanate, cerium Examples thereof include organic substances and organic complexes mainly activated by lanthanoid elements such as minates, rare earth silicates, and europium. In addition to the above, a phosphor having similar performance and effects can be used. Thus, a light emitting device that emits mixed light (for example, white light) of primary light and secondary light having a visible wavelength, or a light emitting device that emits visible light secondary light when excited by the primary light of ultraviolet light is used. Can do. The phosphor may be settled on the bottom surface side of the concave portion of the package, or may be dispersed in the concave portion.

(Protective element 70)
The protection element is an element for protecting the light emitting element from static electricity or a high voltage surge. Specifically, a Zener diode is mentioned. The protective element may be covered with a light reflecting member such as a white resin in order to suppress light absorption.

(Mounting member 80)
The mounting member is a member on which the light emitting device (light emitting device package) is mounted. Specifically, examples of the mounting member include various wiring boards. Examples of the base material of the wiring board include ceramics such as aluminum oxide and aluminum nitride, metals such as copper and aluminum, resins such as glass epoxy, BT resin, and polyimide (including fiber reinforced resin). Examples of the wiring material include copper, iron, nickel, tungsten, chromium, aluminum, silver, gold, titanium, and alloys thereof. The wiring of the mounting member has a device mounting portion (referred to as “land” or the like) on which the light emitting device can be mounted with a conductive paste. This device mounting portion has substantially the same shape (pattern) as the exposed region of the lower surface of the lead frame of the light emitting device in order to suppress the bias of the conductive paste or improve the self-alignment property of the light emitting device. Is preferred.

(Conductive paste)
The conductive paste is a paste-like member that mounts the light emitting device on the mounting member. Specifically, solders such as tin-bismuth, tin-copper, tin-silver, and gold-tin, and metal pastes such as silver, gold, and palladium can be used.

  Examples according to the present invention will be described in detail below. Needless to say, the present invention is not limited to the following examples.

<Example 1>
The light emitting device of Example 1 is a top-view type SMD LED having the structure of the light emitting device 200 of the example shown in FIG.

  The package 100 has a rectangular parallelepiped shape with a size of 7.0 mm in width, 2.0 mm in length, and 0.6 mm in thickness, and the first and second lead frames 11 and 12 constituting the positive electrode and the negative electrode and the first lead frames 11 and 12 therebetween. The resin molded body 20 is integrally formed on the three lead frames 13. In this package 100, a processed metal plate in which a plurality of sets of lead frames 11, 12, 13 are connected vertically and horizontally via suspension leads (which become suspension lead portions 104 after being separated into individual pieces) is installed in a mold. Then, it is manufactured by injecting the constituent material of the resin molded body 20 in a fluid state, solidifying and releasing the mold, and separating (separating) each package.

  The three lead frames 11, 12, and 13 are small pieces of copper alloy having a maximum thickness of 0.3 mm and having a surface plated with silver. The first lead frame 11 is mainly composed of a main body 101 having a rectangular shape when viewed from above, having a horizontal (length) of 2.0 mm and a vertical (width) of 1.5 mm (excluding the suspension lead 104). It has a horizontal (length) 2.0 mm extending to the second lead frame 12 side and a vertical (width) 0.6 mm (excluding the suspension lead portion 104), and a rectangular extending portion 102 in a top view. . The extending portion 102 is provided near one end of the main body portion 101 in the short direction, and the first lead frame 11 is L-shaped when viewed from above. The second lead frame 12 is formed in a rectangular shape in a top view with a width (length) of 2.0 mm and a length (width) of 1.5 mm (excluding the suspension lead portion 104). The third lead frame 13 is disposed so as to face the extending portion 102 of the first lead frame in the short direction, and has a horizontal (length) of 1.8 mm and a vertical (width) of 0.6 mm (suspended lead). (Excluding the portion 104). The width (longitudinal direction) of the separation region between the extending portion 102 of the first lead frame and the second lead frame 12 is 0.5 mm. Further, the width (longitudinal direction) of the separation region between the main body portion 101 of the first lead frame and the third lead frame 13 is 0.5 mm. Further, the width (short direction) of the separation region between the extending portion 102 of the first lead frame and the third lead frame 13 is 0.4 mm. Note that these separated regions are formed by punching with a press. On the lower surface of the extending portion 102 of the first lead frame, a recess 13 having a horizontal (length) of 0.5 mm, a vertical (width) of 0.6 mm, and a depth of 0.15 mm is provided in close contact with the main body 101. . The recess 13 is filled with a resin molded body 20. Thereby, substantially all of the exposed region 107 on the lower surface of the extending portion is separated from the exposed region 105 on the lower surface of the main body portion of the first lead frame by the resin molding 20 filling the recess 13. In addition, a recess having a width of 0.12 mm and a depth of 0.09 mm is formed in a part of the periphery of the lower surface of the first and second lead frames 11 and 12 and the entire periphery of the lower surface of the third lead frame 13. This recess is also filled with the resin molded body 20. These depressions are formed by etching. The exposed areas of the lower surfaces of the three lead frames are substantially the same surface as the lower surface of the resin molded body 20 and constitute the lower surface of the package 100. In addition, each exposed region on the lower surface of the three lead frames has a substantially rectangular shape (four corners are rounded). Part of the first and second lead frames 11 and 12 (also one of the suspended lead portions 104) is exposed at the end face facing the longitudinal direction of the package 100. In this exposed portion, a recess functioning as a castellation is formed continuously on the lower surface.

  The resin molded body 20 is an epoxy resin molded body having a rectangular shape with a top view of 7.0 mm wide and 2.0 mm long, a maximum thickness of 0.45 mm, and containing titanium oxide. In the approximate center on the upper surface side of the resin molded body 20, a concave portion having a rectangular shape (four corners are rounded) as viewed from above having a width of 1.4 mm, a length of 6.4 mm, and a depth of 0.35 mm is formed. The inclination angle of the side wall surface of the recess is 5 to 30 ° from the bottom surface of the recess. A recess having a width of 0.12 mm and a depth of 0.09 mm is formed in a part of the top surface of each of the three lead frames 11, 12, 13 corresponding to the boundary between the bottom surface of the recess and the side wall surface. The depression is also filled with the resin molded body 20.

  One light emitting element 30 is adhered to each of the top surfaces of the first and second lead frames 11 and 12 constituting the bottom surface of the recess of the package 100 with an insulating adhesive that is a silicone resin. This light emitting element 30 is formed by sequentially laminating an n-type layer, an active layer, and a p-type layer of a nitride semiconductor on a sapphire substrate, and can emit blue light (center wavelength of about 460 nm), and has a length of 650 μm, a width of 650 μm and a thickness It is a 150 μm LED element. The distance between the centers of the two light emitting elements 30 is 4.0 mm. Each light emitting element 30 has one of the p and n electrodes connected to the lead frame on which the element is mounted by a wire 40 and the other of the p and n electrodes to the upper surface of the third lead frame 13. Connected with. Thereby, the two light emitting elements 30 are connected in series. The wire 40 is a gold wire having a wire diameter of 25 μm.

  Further, a protective element 70, which is a Zener diode having a counter electrode structure with a length of 150 μm, a width of 150 μm, and a thickness of 85 μm, is adhered to the upper surface of the extending portion 102 of the first lead frame with a conductive adhesive that is a silver paste. ing. Further, the upper surface electrode of the protection element 70 is connected to the upper surface of the second lead frame 12 by the wire 40.

  A concave portion of the package 100 in which the two light emitting elements 30 and the protective element 70 are accommodated is filled with a sealing member 50 to cover each element. The sealing member 50 contains a silicone resin as a base material, and contains a phosphor 60 of yttrium aluminum garnet (YAG: Ce) activated with cerium and a silica filler. The upper surface of the sealing member 50 is substantially the same surface as the upper surface of the recess side wall 23 of the resin molded body, and is substantially flat. The sealing member 50 is formed by filling the concave portion of the package 100 using a dispenser and solidifying it by heating or the like in a fluid state. The phosphor 60 has settled to the bottom surface side of the recess.

  The package and light-emitting device of Example 1 configured as described above can achieve the same effects as the package 100 and light-emitting device 200 of Embodiment 1.

  The light emitting device package according to the present invention can be suitably used as a package of an SMD type LED. The light emitting device using the package according to the present invention includes a backlight light source of a liquid crystal display, various lighting fixtures, a large display, various display devices such as an advertisement and a destination guide, and further, a digital video camera, a facsimile, a copier, It can be used for an image reading device in a scanner or the like, a projector device, or the like.

DESCRIPTION OF SYMBOLS 100,120,130 ... Package for light emitting device 11,12,13,14,15 ... Lead frame, 101 ... Body part, 102 ... Extension part, 103 ... Depression, 104 ... Hanging lead part, 105,106,107,109 ... exposed area of lower surface of lead frame 20 ... resin molded body, 23 ... concave side wall, 25 ... intermediate wall part 30 ... light emitting element 40 ... wire 50 ... sealing member 60 ... phosphor 70 ... protective element 80 ... mounting member 200, 220, 230 ... Light emitting device 300, 320 ... Illumination device

Claims (13)

In a top view, it has a longitudinal direction and a short direction perpendicular to the longitudinal direction,
First and second lead frames arranged in the longitudinal direction;
A light emitting device package comprising: a resin molding integrally molded with the first and second lead frames,
The first lead frame has a main body portion, and an extending portion that extends from the main body portion toward the second lead frame in a narrow width,
A depression is provided on the lower surface of the first lead frame,
A package for a light emitting device, wherein at least a part of an exposed region on a lower surface of the extending portion is separated from an exposed region on a lower surface of the main body by a resin molded body filling the recess.   2. The light emitting device package according to claim 1, wherein substantially the entire exposed area of the lower surface of the extending portion is separated from the exposed area of the lower surface of the main body portion by a resin molded body filling the recess.   The package for a light-emitting device according to claim 1, wherein an exposed region on a lower surface of the extending portion is substantially rectangular.   The light emitting device package according to any one of claims 1 to 3, wherein the extending portion is positioned at a substantially center of the light emitting device package. The light emitting device package includes a third lead frame arranged to face the extending portion in the short direction,
5. The light emitting device package according to claim 1, wherein at least a part of a lower surface of the third lead frame is exposed from the resin molded body. 6. The second lead frame has a main body part, and an extending part extending from the main body part toward the first lead frame side with a narrow width,
A depression is provided on the lower surface of the second lead frame,
Due to the resin molded body filling the recess of the second lead frame, at least a part of the exposed region of the lower surface of the extending portion of the second lead frame is formed on the lower surface of the main body portion of the second lead frame. Separated from the exposed area,
5. The light emitting device package according to claim 1, wherein the extending portions of the first and second lead frames are arranged to face each other in the short direction. 6.   On the upper surface side of the light emitting device package, the resin molded body includes at least a part of the upper surface of the main body portion of the first lead frame and the second upper surface of the extending portion of the first lead frame. The package for a light-emitting device according to claim 1, further comprising an intermediate wall portion that is provided so as to be exposed in at least a part of the lead frame side and to extend in the short-side direction.   The light emitting device package according to claim 7, wherein the intermediate wall portion is provided on the extending portion of the first lead frame. The second lead frame has a main body part, and an extending part extending from the main body part toward the first lead frame side with a narrow width,
The extending portions of the first and second lead frames are arranged so as to face each other in the short direction;
The intermediate wall portion includes a first wall portion and a second wall portion provided over the extending portion of the first and second lead frames,
The light emitting device according to claim 8, wherein upper surfaces of the extending portions of the first and second lead frames are each divided into three exposed regions by the first wall portion and the second wall portion. package. A package for a light emitting device according to any one of claims 1 to 9,
And a light emitting device mounted on the top surface of each of the first and second lead frames.   The light emitting device according to claim 10, further comprising a protective element placed on an upper surface of the extending portion of the first lead frame. The first and second light-emitting devices, which are the light-emitting devices according to claim 10 or 11, are arranged in the longitudinal direction,
A first light-emitting element disposed closest to the second light-emitting device in the first light-emitting device; and a second light-emitting device disposed closest to the first light-emitting device in the second light-emitting device. The distance from the light emitting element is
In the first light emitting device, the lighting device is substantially equal to an interval between the first light emitting element and a third light emitting element arranged next to the first light emitting element.   The lighting device according to claim 12, wherein an interval between light emitting elements included in the first light emitting device is substantially equal to an interval between light emitting elements included in the second light emitting device.

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