JP2009176879A - Light-emitting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-emitting device capable of being mounted on a circuit board etc. in two directions different from each other. <P>SOLUTION: This light-emitting device 1 includes a plurality of light-emitting elements 2 (20, 21 and 22) arranged in a predetermined direction in a line shape and a substrate 3 including a plurality of terminals 32 (32a to 32h) electrically connected with the light-emitting elements 2. A plurality of terminals 32 include: terminals 32b, 32f and 32c to each of which first potential is applied when the substrate 3 is arranged in a first direction; terminals 32a, 32h and 32d to each of which second potential is applied when the substrate 3 is arranged in a first direction; terminals 32a, 32e and 32b to each of which first potential is applied when the substrate 3 is arranged in a second direction; and terminals 32d, 32g and 32c to each of which second potential is applied when the substrate 3 is arranged in a second direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a light emitting device, and more particularly to a light emitting device including a plurality of light emitting elements.

  Conventionally, a light-emitting device provided with a plurality of light-emitting elements is known (see, for example, Patent Document 1). Patent Document 1 discloses a light-emitting device including a plurality of light-emitting elements and a base on which the plurality of light-emitting elements are mounted. In this light emitting device, the plurality of light emitting elements are arranged in a line. The driving electrode (one electrode) formed on the upper surface of each light emitting element is electrically connected to the metallized wiring conductor formed on the substrate by a bonding wire (metal wire), and the back surface of each light emitting element. The ground electrode (the other electrode) formed on is electrically connected to the mounting portion formed on the substrate by a conductive adhesive.

  Conventionally, a light-emitting device including a plurality of light-emitting elements is known as in the light-emitting device disclosed in Patent Document 1. FIG. 11 is a plan view showing a structure of a conventional light emitting device including a plurality of light emitting elements. FIG. 12 is a plan view showing a state where the reflection frame and the transparent resin are removed from the light emitting device according to the conventional example shown in FIG. FIG. 13 is a plan view showing a state in which the light emitting device according to the conventional example shown in FIG. 11 is mounted on a mounting substrate.

  As shown in FIGS. 11 and 12, a light emitting device 101 according to a conventional example includes a plurality of light emitting elements 102, a frame 103 on which the plurality of light emitting elements 102 are mounted, a frame 103, and an opening 104a. And a transparent resin 105 disposed inside the opening 104 a of the reflective frame 104 so as to cover the plurality of light emitting elements 102.

  The plurality of light emitting elements 102 are arranged in a line. Further, the upper electrode (one electrode) 102a of each light emitting element 102 is electrically connected to one terminal 103a of the frame 103 by a metal wire 106, and the back electrodes (other electrodes) of the plurality of light emitting elements 102 (see FIG. (Not shown) is connected to the other terminal 103b of the frame 103 by a conductive adhesive (not shown).

Further, as shown in FIG. 13, the light emitting device 101 is mounted on the mounting substrate 110 so that the plurality of light emitting elements 102 are arranged in a direction (B direction) orthogonal to a direction (A direction) in which the mounting substrate 110 extends. .
JP 2004-253711 A

  The light emitting device 101 according to the conventional example is mounted on the mounting substrate 110 such that the plurality of light emitting elements 102 are arranged in a direction (B direction) orthogonal to the direction (A direction) in which the mounting substrate 110 extends. The light emitted from the light beam easily spreads in the B direction, but hardly spreads in the A direction.

  However, depending on the situation in which the light emitting device 101 is used, it may be preferable that the light emitted from the light emitting device 101 easily spreads in the A direction. In this case, it is necessary to manufacture the light-emitting device so that the plurality of light-emitting elements 102 can be mounted on the mounting substrate 110 in a state of being arranged in the A direction.

  As described above, the structure of the conventional light emitting device 101 has a problem that it is necessary to manufacture two types of light emitting devices according to the mounting direction of the light emitting device with respect to the mounting substrate or the like.

  Note that the light emitting device of Patent Document 1 also has the same problems as the light emitting device 101 according to the conventional example shown in FIG.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a light-emitting device that can be mounted in two different directions on a mounting substrate or the like.

  In order to achieve the above object, a light emitting device according to a first aspect of the present invention includes a plurality of light emitting elements arranged in a row in a predetermined direction and a plurality of light emitting elements. A plurality of terminals connected to each other, wherein the plurality of terminals are more than the first terminals to which the first potential is applied when the substrate is arranged in the first direction; A plurality of second terminals to which a low second potential is applied, a plurality of third terminals to which a first potential is applied when the substrate is disposed in a second direction orthogonal to the first direction; A plurality of fourth terminals to which two potentials are applied, one electrode of the plurality of light emitting elements is electrically connected to the first terminal and the third terminal, and the other electrode of the plurality of light emitting elements is the second terminal And electrically connected to the fourth terminal.

  In the light emitting device according to the first aspect, as described above, the plurality of terminals, the plurality of first terminals to which the first potential is applied when the substrate is arranged in the first direction, and the first potential A plurality of second terminals to which a lower second potential is applied, a plurality of third terminals to which the first potential is applied when the substrate is disposed in a second direction orthogonal to the first direction, and And a plurality of fourth terminals to which the second potential is applied, and one electrode of the plurality of light emitting elements is electrically connected to the first terminal and the third terminal, When the substrate (light emitting device) is mounted (arranged) in the first direction with respect to the mounting substrate or the like by electrically connecting the other electrode to the second terminal and the fourth terminal, the first terminal and the second terminal Using two terminals, the light emitting element can emit light and the substrate (light emitting element). When mounted in a second direction relative to such a mounting board equipment) (arrangement), with the third terminal and the fourth terminal, it is possible to emit a light-emitting element. Accordingly, the light emitting device can be mounted in two different directions with respect to the mounting substrate or the like. For this reason, it is not necessary to manufacture two types of light-emitting devices according to the mounting direction with respect to a mounting substrate or the like.

  In the light-emitting device according to the first aspect, preferably, when the substrate is arranged in the second direction, the arrangement positions of the plurality of terminals with respect to the center of the substrate are those in the case where the substrate is arranged in the first direction. The positions of the plurality of terminals with respect to the center of the substrate are substantially the same. According to this configuration, the wiring of the mounting substrate or the like when the substrate (light emitting device) is mounted (arranged) in the first direction with respect to the mounting substrate and when it is mounted (arranged) in the second direction. The pattern can be the same. Thereby, a board | substrate (light-emitting device) can be easily mounted in two different directions (a 1st direction and a 2nd direction) with respect to a mounting board | substrate.

  In the light emitting device according to the first aspect, preferably, the plurality of first terminals include at least one of the plurality of third terminals and at least one of the plurality of fourth terminals, The second terminal includes at least one of the plurality of third terminals and at least one of the plurality of fourth terminals. With this configuration, at least a part of the plurality of first terminals can be used as the third terminal and the fourth terminal, and at least a part of the plurality of second terminals can be used as the third terminal. And it can be used as the fourth terminal. Thereby, it can suppress that the number of the terminals of a light-emitting device increases.

  The plurality of first terminals include at least one of a plurality of third terminals and at least one of a plurality of fourth terminals, and the plurality of second terminals is at least one of the plurality of third terminals. In the light-emitting device including one and at least one of the plurality of fourth terminals, preferably, the plurality of first terminals and the plurality of second terminals are both arranged in the second direction. And includes a fifth terminal that cannot be either the third terminal or the fourth terminal, and the plurality of third terminals and the plurality of fourth terminals are both the first terminals when the substrate is disposed in the first direction. And at least one of the plurality of light emitting elements is electrically connected to the fifth terminal and the sixth terminal. If comprised in this way, when mounting a light-emitting device (board | substrate) in a 1st direction with respect to a mounting board | substrate etc., at least 1 of the several light emitting elements is made to light-emit using a 5th terminal. In addition, when the light emitting device (substrate) is mounted in the second direction with respect to the mounting substrate or the like, at least one of the plurality of light emitting elements can be caused to emit light using the sixth terminal.

  The plurality of first terminals include at least one of a plurality of third terminals and at least one of a plurality of fourth terminals, and the plurality of second terminals is at least one of the plurality of third terminals. In the light emitting device including one and at least one of the plurality of fourth terminals, preferably, at least one of the plurality of first terminals is electrically connected to two of the plurality of light emitting elements. And at least one of the plurality of second terminals is electrically connected to two of the plurality of light emitting elements. With this configuration, at least one of the first terminals can be used in common for the two light emitting elements, and at least one of the second terminals can be used in common for the two light emitting elements. Can be used. Thereby, it can suppress easily that the number of the terminals of a light-emitting device increases.

  In the light emitting device according to the first aspect, preferably, when the substrate is arranged in the first direction, the first potential is applied to a part of the plurality of first terminals and the plurality of second terminals. When the second potential is applied to a part of the terminals, a part of the plurality of light emitting elements emits light, and the substrate is arranged in the second direction. A first potential is applied to a part of the plurality of light emitting elements, and a second potential is applied to a part of the plurality of fourth terminals, whereby a part of the plurality of light emitting elements emits light. With this configuration, for example, when one electrode of the light emitting element is electrically connected to the first terminal and the second terminal, and the other electrode of the light emitting element is electrically connected to the second terminal. In this case, when the light emitting device is mounted in the first direction with respect to the mounting substrate or the like, the second terminal connected to the one electrode is connected to the one electrode without applying the second potential. By applying the first potential to the first terminal and applying the second potential to the second terminal connected to the other electrode, the light emitting element can easily emit light.

  In the light emitting device according to the first aspect, preferably, the one electrode and the other electrode of the light emitting element are formed on the upper surface of the light emitting element, and the one electrode of the light emitting element is connected to the first terminal and the first electrode by a metal wire. The other electrode of the light emitting element is electrically connected to the second terminal and the fourth terminal by a metal wire. If comprised in this way, while being able to electrically connect one electrode, a 1st terminal, and a 3rd terminal easily, the other electrode, a 2nd terminal, and a 4th terminal can be electrically connected easily. Can be connected. That is, for example, the other electrode is formed on the lower surface of the light emitting element, and the other electrode is electrically connected to the substrate using a conductive adhesive or the like. In order to electrically connect the second terminal and the fourth terminal, it is not necessary to route the wiring on the substrate. Thereby, the freedom degree of design of a board | substrate can be improved.

  In the light emitting device according to the first aspect, preferably, when the substrate is mounted in the first direction with respect to the mounting substrate, only the first terminal and the second terminal are electrically connected to the mounting substrate. Are arranged in the second direction with respect to the mounting substrate, only the third terminal and the fourth terminal are electrically connected to the mounting substrate. With such a configuration, a wiring portion only for emitting light from a plurality of light emitting elements may be provided on the mounting substrate, so that the degree of freedom in designing the mounting substrate can be improved.

  As described above, according to the present invention, a light emitting device that can be mounted in two different directions on a mounting substrate or the like can be easily obtained.

  FIG. 1 is a plan view illustrating a structure of a light emitting device according to an embodiment of the present invention. FIG. 2 is a plan view showing a state in which the reflection frame and the transparent resin are removed from the light emitting device according to the embodiment shown in FIG. FIG. 3 is a bottom view showing the structure of the light emitting device according to the embodiment shown in FIG. FIG. 4 is a cross-sectional view illustrating a structure of the light emitting device according to the embodiment illustrated in FIG. First, with reference to FIGS. 1-4, the structure of the light-emitting device 1 by one Embodiment of this invention is demonstrated.

  As shown in FIGS. 1, 2, and 4, a light emitting device 1 according to an embodiment of the present invention includes a plurality of light emitting elements 2, a substrate 3 made of glass epoxy resin on which the plurality of light emitting elements 2 are mounted, An aluminum reflective frame 4 disposed on the substrate 3 and having an opening 4a, and a transparent resin 5 disposed inside the openings 4a of the reflective frame 4 so as to cover the plurality of light emitting elements 2 are provided. .

  As shown in FIG. 2, the plurality of light emitting elements 2 include light emitting elements 20, 21, and 22 that emit red, green, and blue light, for example. The light emitting elements 20, 21 and 22 are arranged in a line in a predetermined direction. On the top surfaces of the light emitting elements 20, 21 and 22, one electrode 20a, 21a and 22a and the other electrode 20b, 21b and 22b are formed, respectively. The light emitting elements 20, 21 and 22 are fixed to mounting portions 31i, 31j and 31k (described later) formed on the upper surface of the substrate 3 using an adhesive (not shown).

  The substrate 3 is formed in a substantially square shape. Further, on the upper surface of the substrate 3, wiring portions 31a, 31b, 31c and 31d are formed at four corner portions, and wiring portions 31e, 31f, 31f, 31g and 31h are formed. These wiring portions 31a to 31h are used as wire bonding portions. In addition, mounting portions 31i, 31j, and 31k on which the light emitting elements 20, 21, and 22 are respectively mounted are formed in the central portion of the upper surface of the substrate 3.

  Here, in the present embodiment, the wiring portions 31 a to 31 h formed on the upper surface of the substrate 3 are electrically connected to the plurality of light emitting elements 2 by the plurality of metal wires 6. Specifically, the wiring portion 31 a is connected to the other electrode 20 b of the light emitting element 20 and one electrode 22 a of the light emitting element 22. The wiring part 31 b is connected to the one electrode 20 a of the light emitting element 20. The wiring portion 31 c is connected to the other electrode 20 b of the light emitting element 20 and one electrode 22 a of the light emitting element 22. The wiring part 31 d is connected to the other electrode 22 b of the light emitting element 22. The wiring portions 31 e and 31 f are connected to the one electrode 21 a of the light emitting element 21. The wiring portions 31 g and 31 h are connected to the other electrode 21 b of the light emitting element 21.

  Note that some of the plurality of metal lines 6 intersect with each other when seen in a plan view, but these metal lines 6 intersect at different height positions and are not in contact with each other.

  In addition, the reflective frame 4 is fixed to the upper surface of the substrate 3 by using an adhesive (not shown) having no conductivity.

  In the present embodiment, a plurality of terminals 32 are formed on the lower surface of the substrate 3 as shown in FIG. Specifically, terminals 32a, 32b, 32c, and 32d are formed at four corners, and terminals 32e, 32f, 32g, and 32h are formed at the center of the four sides. The terminals 32a to 32h are electrically connected to the wiring portions 31a to 31h (see FIG. 2) through the through holes 33 in which the conductor is embedded. The terminal 32a is an example of the “second terminal” and the “third terminal” in the present invention, and the terminal 32b is an example of the “first terminal” and the “third terminal” in the present invention. The terminal 32c is an example of the “first terminal” and the “fourth terminal” in the present invention, and the terminal 32d is an example of the “second terminal” and the “fourth terminal” in the present invention. The terminal 32e is an example of the “third terminal” and the “sixth terminal” in the present invention, and the terminal 32f is an example of the “first terminal” and the “fifth terminal” in the present invention. The terminal 32g is an example of the “fourth terminal” and the “sixth terminal” in the present invention, and the terminal 32h is an example of the “second terminal” and the “fifth terminal” in the present invention.

  In the present embodiment, the terminals 32a to 32h are formed so as to be 90 ° rotationally symmetric with respect to the center of the substrate 3 (the center of gravity of the terminals 32a to 32h). That is, when the substrate 3 (light emitting device 1) is mounted in a first direction with respect to a mounting substrate or the like as will be described later, the arrangement positions of the terminals 32a to 32h with respect to the center of the substrate 3 are the substrate 3 (light emitting device). 1) is the same as the arrangement position of the terminals 32a to 32h with respect to the center of the substrate 3 when mounted in the second direction with respect to the mounting substrate or the like.

  5 and 6 are plan views showing a state in which the light emitting device (substrate) according to the embodiment shown in FIG. 1 is mounted in the first direction with respect to the mounting substrate. 7 and 8 are plan views showing a state in which the light emitting device (substrate) according to the embodiment shown in FIG. 1 is mounted in the second direction with respect to the mounting substrate. Next, a case where the light emitting device 1 according to the embodiment of the present invention is mounted on the mounting substrate 40 will be described with reference to FIGS.

  First, as shown in FIGS. 5 and 6, the light emitting device 1 (substrate 3) is mounted such that the plurality of light emitting elements 2 are arranged in a direction (B direction) orthogonal to the extending direction (A direction) of the mounting substrate 40. A case where the light emitting device 1 (substrate 3) is mounted in the first direction with respect to the mounting substrate 40 will be described. When the light emitting device 1 (substrate 3) is mounted in the first direction with respect to the mounting substrate 40, as shown in FIG. 6, terminals 32a, 32b, 32c, 32d, 32f and 32h of the light emitting device 1 (wiring unit) 31a, 31b, 31c, 31d, 31f and 31h) are electrically connected to a wiring portion (not shown) of the mounting substrate 40. On the other hand, the terminals 32e and 32g (wiring portions 31e and 31g) are not electrically connected to the wiring portion (not shown) of the mounting substrate 40. That is, only six wiring portions (not shown) of the mounting substrate 40 are formed so as to correspond to the terminals 32a, 32b, 32c, 32d, 32f and 32h of the light emitting device 1.

  Then, a first potential (for example, about 3.5V) is applied to a part of the terminals 32b, 32f, and 32c, and a second potential (for example, about approximately 1 V) is applied to the terminals 32a, 32h, and 32d. By applying 0V or about −3.5V), a part of the light emitting elements 20, 21 and 22 emits light.

  Specifically, when only the light emitting element 20 is caused to emit light, the first potential is applied to the terminal 32b and the second potential is applied to the terminal 32a. When only the light emitting element 21 emits light, the first potential is applied to the terminal 32f and the second potential is applied to the terminal 32h. When only the light emitting element 22 emits light, the first potential is applied to the terminal 32c, and the second potential is applied to the terminal 32d. In this case, the first potential may be applied to the terminal 32a, or the wiring portion (not shown) of the substrate 3 to which the terminal 32a is connected may be electrically disconnected from the ground or the like.

  When the light emitting elements 20 and 21 emit light, the first potential is applied to the terminals 32b and 32f, and the second potential is applied to the terminals 32a and 32h. When the light emitting elements 21 and 22 are caused to emit light, the first potential is applied to the terminals 32f and 32c, and the second potential is applied to the terminals 32h and 32d.

  Next, as shown in FIGS. 7 and 8, when the light emitting device 1 (substrate 3) is mounted on the mounting substrate 40 so that the plurality of light emitting elements 2 are arranged in the extending direction (A direction) of the mounting substrate 40. (When the light-emitting device 1 (substrate 3) is mounted in the second direction with respect to the mounting substrate 40) will be described. When the light emitting device 1 (substrate 3) is mounted in the second direction with respect to the mounting substrate 40, as shown in FIG. 8, terminals 32a, 32b, 32c, 32d, 32e and 32g of the light emitting device 1 (wiring unit) 31a, 31b, 31c, 31d, 31e, and 31g) are electrically connected to a wiring portion (not shown) of the mounting substrate 40. On the other hand, the terminals 32f and 32h (wiring portions 31f and 31h) are not connected to the wiring portion (not shown) of the mounting substrate 40.

  And while applying a 1st electric potential to some terminals 32b, 32e, and 32a, and applying a 2nd electric potential to terminals 32c, 32g, and 32d, some light emitting elements 20, 21, and 22 are applied. Emits light.

  Specifically, when only the light emitting element 20 emits light, the first potential is applied to the terminal 32b and the second potential is applied to the terminal 32c. When only the light emitting element 21 emits light, the first potential is applied to the terminal 32e and the second potential is applied to the terminal 32g. When only the light emitting element 22 emits light, the first potential is applied to the terminal 32a and the second potential is applied to the terminal 32d. In this case, the first potential may be applied to the terminal 32c, or the wiring portion (not shown) of the substrate 3 to which the terminal 32c is connected may be electrically disconnected from the ground or the like.

  Further, when the light emitting elements 20 and 21 are caused to emit light, the first potential is applied to the terminals 32b and 32e, and the second potential is applied to the terminals 32c and 32g. When the light emitting elements 21 and 22 are caused to emit light, the first potential is applied to the terminals 32e and 32a, and the second potential is applied to the terminals 32g and 32d.

  In the present embodiment, as described above, the one electrode 20a of the light emitting element 20 is electrically connected to the terminal 32b, the other electrode 20b is electrically connected to the terminals 32a and 32c, and the one electrode 21a of the light emitting element 21 is connected to the terminals 32e and 32f. The other electrode 21b is electrically connected to the terminals 32g and 32h, the one electrode 22a of the light emitting element 22 is electrically connected to the terminals 32a and 32c, and the other electrode 22b is electrically connected to the terminal 32d. When the substrate 3 is mounted in the first direction with respect to the mounting substrate 40, the first potential is applied to the terminals 32b, 32f, and 32c, and the second potential is applied to the terminals 32a, 32h, and 32d. When the substrate 3 is mounted in the second direction with respect to the mounting substrate 40, the first potential is applied to the terminals 32a, 32b, and 32e, and the second potential is applied to the terminals 32d, 32g, and 32c. Thus, when the light-emitting device 1 (substrate 3) is mounted in the first direction with respect to the mounting substrate 40, the light-emitting elements 20, 21, and 22 using the terminals 32a, 32b, 32c, 32d, 32f, and 32h. When the light emitting device 1 (substrate 3) is mounted in the second direction with respect to the mounting substrate 40, the terminals 32a, 32b, 32c, 32d, 3 Using e and 32g, it is possible to emit a light-emitting element 20, 21 and 22. Thereby, the light emitting device 1 can be mounted in two different directions with respect to the mounting substrate 40. For this reason, it is not necessary to manufacture two types of light emitting devices according to the mounting direction with respect to the mounting substrate 40.

  Moreover, in this embodiment, when the board | substrate 3 (light-emitting device 1) is mounted in the 1st direction with respect to the mounting board | substrate 40, the arrangement position with respect to the center of the board | substrate 3 of the terminals 32a-32h is the board | substrate 3 (light emission). When the device 1) is mounted in the second direction with respect to the mounting substrate 40, the substrate 3 (the light emitting device 1) is mounted on the mounting substrate by making the terminals 32a to 32h the same as the arrangement position with respect to the center of the substrate 3. The shape (wiring pattern) of the wiring portion (not shown) of the mounting substrate 40 can be made the same when mounted in the first direction with respect to 40 and when mounted in the second direction. Thereby, the board | substrate 3 (light-emitting device 1) can be easily mounted in two different directions (a 1st direction and a 2nd direction) with respect to the mounting board | substrate 40. FIG.

  In the present embodiment, the terminal 32a is used both in the case where the substrate 3 (the light emitting device 1) is mounted in the first direction with respect to the mounting substrate 40 and in the case where the substrate 3 is mounted in the second direction. , 32b, 32c, and 32d, the terminals 32a, 32b, 32c, and 32d can be commonly used in both cases by applying the first potential or the second potential to the light emitting device 1. An increase in the number of terminals 32 can be suppressed.

  In the present embodiment, the terminal 32a is electrically connected to the light emitting elements 20 and 22, and the terminal 32c is electrically connected to the light emitting elements 20 and 22, whereby the terminal 32a is connected to the two light emitting elements 2. (20 and 22) can be used in common, and the terminal 32c can be used in common for the two light emitting elements 2 (20 and 22). Thereby, it can suppress easily that the number of the terminals 32 of the light-emitting device 1 increases.

  In the present embodiment, the one electrode 20a, 21a and 22a and the other electrode 20b, 21b and 22b are formed on the upper surface of the light emitting elements 20, 21 and 22, and the one electrode 20a, 21a, 22a and the other electrode 20b are formed. , 21b and 22b are electrically connected to the terminals 32a to 32h by the metal wire 6 to easily connect the one electrode 20a, 21a, 22a, the other electrode 20b, 21b and 22b, and the terminal 32a to 32h. Can be electrically connected. That is, for example, the other electrode is formed on the lower surface of the light emitting element, and the other electrode is electrically connected to the substrate using a conductive adhesive or the like. There is no need to route the wiring of the board in order to electrically connect the terminals. Thereby, the design freedom of the board | substrate 3 can be improved.

  In the present embodiment, when the substrate 3 is mounted in the first direction with respect to the mounting substrate 40, only the terminals 32a, 32b, 32c, 32d, 32f and 32h are electrically connected to the mounting substrate 40, When the substrate 3 is arranged in the second direction with respect to the mounting substrate 40, only the terminals 32a, 32b, 32c, 32d, 32e and 32g are electrically connected to the mounting substrate 40. Thus, only six wiring portions (not shown) of the mounting substrate 40 may be provided so as to correspond to the plurality of terminals 32 of the light emitting device 1. That is, the wiring board only for causing the light emitting elements 20, 21, and 22 to emit light may be provided on the mounting board 40, so that the degree of freedom in designing the mounting board 40 can be improved.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, an example in which three light emitting elements are mounted on the light emitting device has been described. However, two or four or more light emitting elements may be mounted on the light emitting device.

  In the above embodiment, for example, three light emitting elements that respectively emit red, green, and blue light are used. However, the present invention is not limited to this, and for example, three light emitting elements that emit light of the same color. A light emitting element may be used.

  In the above embodiment, an example in which a plurality of light emitting elements are arranged in a row has been described. However, the present invention is not limited to this, and a plurality of light emitting elements may be arranged in a plurality of rows.

  Further, in the above embodiment, the case where one or two of the three light emitting elements emit light simultaneously has been described. However, the present invention is not limited to this, and all three light emitting elements are configured to emit light simultaneously. May be. In this case, the number of terminals and wiring portions on the substrate may be increased, and each terminal (each wiring portion) may be electrically connected to one electrode or the other electrode of one light emitting element.

  Moreover, in the said embodiment, although it showed about the case where some metal wires 6 cross | intersect mutually seeing planarly, this invention is not restricted to this, This invention shown in FIG. As in the light emitting device 1a according to the first modification, the light emitting device 1a may be configured such that the plurality of metal wires 6 do not intersect each other. Specifically, wire bonding portions 31l, 31m, 31n, and 31o are provided on the upper surface of the substrate 3, and the wire bonding portions 31l, 31m, 31n, and 31o are connected to the wiring portions 31a, 31e, 31c, and 31g, respectively. To do. Then, the wire bonding part 31 l connected to the wiring part 31 a and the one electrode 22 a of the light emitting element 22 are connected by the metal wire 6. In addition, the wire bonding part 31 m connected to the wiring part 31 e and the one electrode 21 a of the light emitting element 21 are connected by the metal wire 6. In addition, the wire bonding portion 31 n connected to the wiring portion 31 c and the other electrode 20 b of the light emitting element 20 are connected by the metal wire 6. Further, the wire bonding part 31 o connected to the wiring part 31 g and the other electrode 21 b of the light emitting element 21 are connected by the metal wire 6. If comprised in this way, the light-emitting device 1a can be formed easily so that the some metal wire 6 may not mutually cross | intersect.

  In the above embodiment, the example using the light emitting element provided with the one electrode and the other electrode on the upper surface is shown. However, the present invention is not limited to this, and the second modification of the present invention shown in FIG. Like the light emitting device 1b, the light emitting device 1b may be configured using a light emitting element 52 in which one electrode 52a is provided on the upper surface and the other electrode (back electrode) is provided on the lower surface. Specifically, the wiring parts 31a and 31c and the mounting part 31i are connected. Further, the wiring portions 31g and 31h are connected to the mounting portion 31j. Further, the wiring part 31d and the mounting part 31k are connected. Then, the light emitting element 52 is fixed to the mounting portions 31i, 31j, and 31k of the substrate 3 using a conductive adhesive (not shown) or the like. If comprised in this way, the light-emitting device 1b can be easily comprised using the light emitting element 52 in which the one electrode 52a was provided in the upper surface, and the other electrode (back surface electrode) (not shown) was provided in the lower surface. Can do.

  Moreover, although the said embodiment demonstrated the example which mounts a light-emitting device in a mounting board | substrate, this invention is not limited to this, You may mount a light-emitting device in members other than a mounting board | substrate.

  Moreover, although the said embodiment demonstrated the example using the board | substrate consisting of glass epoxy resin, this invention is not restricted to this, You may use the board | substrate consisting of resin other than glass epoxy resin.

  In the above embodiment, the example in which the light emitting device is provided with the aluminum reflecting frame has been described. However, the present invention is not limited thereto, and a resin or the like can be used instead of the aluminum reflecting frame. .

It is the top view which showed the structure of the light-emitting device by one Embodiment of this invention. It is the top view which showed the state which removed the reflective frame and transparent resin from the light-emitting device by one Embodiment shown in FIG. It is the bottom view which showed the structure of the light-emitting device by one Embodiment shown in FIG. It is sectional drawing which showed the structure of the light-emitting device by one Embodiment shown in FIG. FIG. 2 is a plan view showing a state in which the light emitting device (substrate) according to the embodiment shown in FIG. 1 is mounted in a first direction with respect to the mounting substrate. FIG. 2 is a plan view showing a state in which the light emitting device (substrate) according to the embodiment shown in FIG. 1 is mounted in a first direction with respect to the mounting substrate. It is the top view which showed the state in which the light-emitting device (board | substrate) by one Embodiment shown in FIG. 1 was mounted in the 2nd direction with respect to the mounting board | substrate. It is the top view which showed the state in which the light-emitting device (board | substrate) by one Embodiment shown in FIG. 1 was mounted in the 2nd direction with respect to the mounting board | substrate. It is the top view which showed the structure of the light-emitting device by the 1st modification of this invention. It is the top view which showed the structure of the light-emitting device by the 2nd modification of this invention. It is the top view which showed the structure of the light-emitting device by a conventional example provided with the several light emitting element. It is the top view which showed the state which removed the reflective frame and transparent resin from the light-emitting device by a prior art example shown in FIG. It is the top view which showed the state which mounted the light-emitting device by a prior art example shown in FIG. 11 on the mounting board | substrate.

Explanation of symbols

1, 1a, 1b Light emitting device 2, 20, 21, 22, 52 Light emitting element 3 Substrate 6 Metal wires 20a, 21a, 22a, 52a One electrode 20b, 21b, 22b The other electrode 32 Terminal 32a Terminal (second terminal, third Terminal)
32b terminal (first terminal, third terminal)
32c terminal (first terminal, fourth terminal)
32d terminal (second terminal, fourth terminal)
32e terminal (3rd terminal, 6th terminal)
32f terminal (first terminal, fifth terminal)
32g terminal (4th terminal, 6th terminal)
32h terminal (2nd terminal, 5th terminal)
40 Mounting board

Claims (8)

A plurality of light emitting elements arranged in a row in a predetermined direction;
A plurality of light emitting elements mounted thereon and a substrate including a plurality of terminals electrically connected to the light emitting elements;
The plurality of terminals are:
A plurality of first terminals to which a first potential is applied when the substrate is disposed in a first direction; and a plurality of second terminals to which a second potential lower than the first potential is applied;
A plurality of third terminals to which the first potential is applied when the substrate is arranged in a second direction orthogonal to the first direction, and a plurality of fourth terminals to which the second potential is applied Including
One electrode of the plurality of light emitting elements is electrically connected to the first terminal and the third terminal,
The other electrode of the plurality of light emitting elements is electrically connected to the second terminal and the fourth terminal.   When the substrate is arranged in the second direction, the arrangement position of the plurality of terminals with respect to the center of the substrate is the position of the plurality of terminals in the case where the substrate is arranged in the first direction. The light emitting device according to claim 1, wherein the light emitting device is substantially the same as an arrangement position with respect to a center of the substrate. The plurality of first terminals include at least one of the plurality of third terminals and at least one of the plurality of fourth terminals,
The plurality of second terminals include at least one of the plurality of third terminals and at least one of the plurality of fourth terminals. Light emitting device. The plurality of first terminals and the plurality of second terminals both include a fifth terminal that cannot be either the third terminal or the fourth terminal when the substrate is disposed in the second direction. ,
The plurality of third terminals and the plurality of fourth terminals both include a sixth terminal that can be neither the first terminal nor the second terminal when the substrate is disposed in the first direction. ,
The light emitting device according to claim 3, wherein at least one of the plurality of light emitting elements is electrically connected to the fifth terminal and the sixth terminal. At least one of the plurality of first terminals is electrically connected to two of the plurality of light emitting elements,
5. The light-emitting device according to claim 3, wherein at least one of the plurality of second terminals is electrically connected to two of the plurality of light-emitting elements. When the substrate is disposed in the first direction, the first potential is applied to a part of the plurality of first terminals, and the part of the plurality of second terminals includes the first potential. By applying the second potential, a part of the plurality of light emitting elements emits light,
When the substrate is disposed in the second direction, the first potential is applied to a part of the plurality of third terminals, and the part of the plurality of fourth terminals is applied to the part. 6. The light emitting device according to claim 1, wherein a part of the plurality of light emitting elements emits light when a second potential is applied. One electrode and the other electrode of the light emitting element are formed on the upper surface of the light emitting element,
One electrode of the light emitting element is electrically connected to the first terminal and the third terminal by a metal wire,
The light emitting device according to any one of claims 1 to 6, wherein the other electrode of the light emitting element is electrically connected to the second terminal and the fourth terminal by a metal wire. When the substrate is mounted in the first direction with respect to the mounting substrate, only the first terminal and the second terminal are electrically connected to the mounting substrate,
2. When the board is disposed in the second direction with respect to the mounting board, only the third terminal and the fourth terminal are electrically connected to the mounting board. The light-emitting device of any one of -7.

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