Light-emitting module

Abstract

To realize a light-emitting module that can be driven with high power. [Solution] The light-emitting module 901 has a first connection terminal 203A and a second connection terminal 203B connected to a first wiring section 104A, a third connection terminal 203C connected to a second wiring section 104B, and a fourth connection terminal 203D connected to a third wiring section 104C. The first wiring section 104A is connected to the light-emitting device 1 so as to be electrically connected to one or more first light-emitting elements 20A and one or more second light-emitting elements 20B on the first electrode side. The second wiring section 104B is connected to the light-emitting device 1 so as to be electrically connected to one or more first light-emitting elements 20A on the second electrode side. The third wiring section 104C is connected to the light-emitting device 1 so as to be electrically connected to one or more second light-emitting elements 20B on the second electrode side.

Description

Technical Field

[0001] The present invention relates to a light-emitting module.

Background Art

[0002] Patent Documents 1 to 3 disclose a light-emitting module in which a light-emitting device is mounted on a wiring board. This light-emitting module connects and drives a light-emitting device installed on a wiring board and a connection member with a wiring pattern.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object is to realize a light-emitting module that can be driven at high power.

Means for Solving the Problems

[0005] The light-emitting module disclosed in the embodiment includes one or more light-emitting devices, a wiring board, a connection member mounted on the wiring board and electrically connected to an external power source to supply power to the one or more light-emitting devices, and the one or more light-emitting devices include one or more first light-emitting elements and one or more second light-emitting elements, and have a plurality of light-emitting elements each having a first electrode and a second electrode, the wiring board is It has a plurality of wiring sections, including a first wiring section, a second wiring section, and a third wiring section, each of which is independent in terms of electrical connection. The aforementioned connecting member is It has multiple connection terminals, including a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal, each of which is independent in terms of electrical connection. The first connection terminal and the second connection terminal are connected to the first wiring section. The third connection terminal is connected to the second wiring section, The fourth connection terminal is connected to the third wiring section, The first wiring section is connected to the light-emitting device such that it is electrically connected to the one or more first light-emitting elements and the one or more second light-emitting elements on the first electrode side. The second wiring section is connected to the light-emitting device so as to be electrically connected to the one or more first light-emitting elements on the second electrode side. The third wiring section is connected to the light-emitting device so as to be electrically connected to the one or more second light-emitting elements on the second electrode side.

[0006] In at least one of the one or more inventions disclosed by the embodiments, a light-emitting module capable of being driven at high power can be provided. [Brief explanation of the drawing]

[0007] [Figure 1] Figure 1 is a perspective view of a light-emitting module according to an embodiment. [Figure 2] Figure 2 is a top view of the light-emitting module according to the embodiment. [Figure 3] This is a cross-sectional view taken along the line III-III in Figure 2. [Figure 4] Figure 4 is a top view of the light-emitting module showing the internal structure of the light-emitting device according to the embodiment. [Figure 5] Figure 5 is a perspective view of the first light-emitting device according to this embodiment. [Figure 6] Figure 6 is a side view corresponding to Figure 5. [Figure 7A]FIG. 7A is a top view of a first light-emitting device according to an embodiment. [Figure 7B] FIG. 7B is a cross-sectional view of the first light-emitting device taken along line VIIB-VIIB of FIG. 7A. [Figure 8] FIG. 8 is a top view for explaining the internal structure of the first light-emitting device according to an embodiment. [Figure 9] FIG. 9 is a perspective view of a second light-emitting device according to an embodiment. [Figure 10] FIG. 10 is a side view corresponding to FIG. 9. [Figure 11A] FIG. 11A is a top view of the second light-emitting device according to an embodiment. [Figure 11B] FIG. 11B is a cross-sectional view of the second light-emitting device taken along line XIB-XIB of FIG. 11A. [Figure 12] FIG. 12 is a top view for explaining the internal structure of the second light-emitting device according to an embodiment. [Figure 13] FIG. 13 is a perspective view of a package according to an embodiment. [Figure 14A] FIG. 14A is a top view of the package according to an embodiment. [Figure 14B] FIG. 14B is a cross-sectional view of the package taken along line XIVB-XIVB of FIG. 14A. [Figure 15] FIG. 15 is a top view of a substrate according to an embodiment. [Figure 16] FIG. 16 is a bottom view of the substrate according to an embodiment. [Figure 17] FIG. 17 is a cross-sectional view of the substrate taken along line XVII-XVII of FIG. 15. [Figure 18] FIG. 18 is a circuit diagram of a light-emitting module according to an embodiment. [Figure 19A] FIG. 19A is a top view of a wiring board according to an embodiment. [Figure 19B] FIG. 19B is a diagram showing a wiring pattern of the wiring board according to an embodiment. [Figure 19C] FIG. 19C is a diagram in which the top view of the wiring board according to an embodiment and the wiring pattern are overlapped. [Figure 20A]Figure 20A is a top view of the connection part according to the embodiment. [Figure 20B] Figure 20B shows the wiring pattern of the wiring board near the connection part according to the embodiment. [Figure 20C] Figure 20C is a diagram showing a top view of the connection part according to the embodiment, overlaid with the wiring pattern near the connection part. [Modes for carrying out the invention]

[0008] In this specification and in the claims, with respect to polygons such as triangles and quadrilaterals, the term "polygon" shall include shapes in which the corners of the polygon have been rounded, chamfered, or otherwise modified. Furthermore, shapes in which modifications have been made not only to the corners (ends of the sides) but also to the middle parts of the sides shall also be referred to as polygons. In other words, shapes that retain the shape of a polygon but have been partially modified are included in the interpretation of "polygon" as described in this specification and in the claims.

[0009] Furthermore, the same applies not only to polygons, but also to words describing specific shapes such as trapezoids, circles, and concave shapes. The same also applies when dealing with each side that forms such a shape. In other words, even if a side has been processed at a corner or in the middle, the interpretation of "side" includes the processed part. When distinguishing a "polygon" or "side" without partial processing from a processed shape, the term "strictly" should be added, for example, "strictly quadrilateral."

[0010] Furthermore, in this specification or the claims, descriptions such as up and down (up / down), left and right, front and back, front and back (front / back), and front and back merely describe relative positions, orientations, and directions, and do not necessarily correspond to the relationships during use.

[0011] Furthermore, directions such as the X, Y, and Z directions may be indicated in the drawings using arrows. The direction of these arrows is consistent across multiple drawings representing the same embodiment. In the drawings, the direction of arrows marked X, Y, and Z is considered the positive direction, and the opposite direction is considered the negative direction. For example, the direction indicated by an X at the end of the arrow is the X direction and is also the positive direction. In this specification, the direction that is both the X direction and the positive direction will be referred to as the "positive X direction," and the opposite direction will be referred to as the "negative X direction." When referring to the "X direction," both the positive and negative directions are included. The same applies to the Y and Z directions.

[0012] Furthermore, in this specification, when an object is identified as "one or more" and described accordingly, the form in which there is one object and the form in which there are multiple objects are described together. Accordingly, the description identifying an object as "one or more" supports any of the embodiments comprising one or more objects, embodiments comprising at least one object, and embodiments comprising multiple objects.

[0013] Furthermore, in this specification, descriptions describing "one or each" of an object are a combined description of one object in an embodiment having one object, one object in an embodiment having multiple objects, and each of the multiple objects in an embodiment having multiple objects. Accordingly, descriptions describing "one or each" of an object support any of the following: in an embodiment having one object, this one object provides the description; in an embodiment having multiple objects, at least one of these objects provides the description; in an embodiment having multiple objects, each of these multiple objects provides the description; and in an embodiment having one or more objects, all objects provide the description.

[0014] Furthermore, in this specification, the terms "component" and "part" may be used when describing components, for example. "Component" refers to an object that is treated as a single physical unit. An object that is treated as a single physical unit can also be an object that is treated as a single part in the manufacturing process. On the other hand, "part" refers to an object that does not necessarily have to be treated as a single physical unit. For example, "part" is used when considering a part of one component, or when considering multiple components together as a single object.

[0015] Furthermore, the distinction between "component" and "part" as described above does not indicate an intention to consciously limit the scope of rights in the interpretation of the doctrine of equivalents. In other words, even if a component is described as a "component" in the claims, this alone does not mean that the applicant recognizes that treating this component as a physical unit is indispensable for the application of the present invention.

[0016] Furthermore, in this specification or the claims, when there are multiple components and each is to be expressed separately, the components may be distinguished by adding "1st," "2nd," etc., to their names. Also, the objects being distinguished may differ between this specification and the claims. Therefore, even if a component with the same prefix as in this specification is described in the claims, the objects identified by this component may not be the same in this specification and the claims.

[0017] For example, if there are components designated as “First,” “Second,” and “Third” in this specification to distinguish them, and these components are described in the claims as “First” and “Third” in this specification, then for readability, the components may be distinguished in the claims as “First” and “Second.” In this case, the components designated as “First” and “Second” in the claims refer to the components designated as “First” and “Third” in this specification, respectively. This rule is not limited to components, but can be applied to other subjects in a reasonable and flexible manner.

[0018] The following describes embodiments for carrying out the present invention. Furthermore, specific embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiments for carrying out the present invention are not limited to these specific embodiments. In other words, the illustrated embodiments are not the only forms in which the present invention is realized. Note that the size and positional relationships of the components shown in each drawing may be exaggerated for the sake of ease of understanding.

[0019] <Embodiment> A light-emitting module 901 according to an embodiment will be described. Figures 1 to 3 are drawings illustrating an exemplary form of the light-emitting module 901. Figure 1 is a perspective view of the light-emitting module 901 according to an embodiment. Figure 2 is a top view of the light-emitting module 901 according to an embodiment. Figure 3 is a cross-sectional view taken along the line III-III in Figure 2. Figure 4 is a top view of the light-emitting module 901 showing the internal structure of the light-emitting device 1 according to an embodiment.

[0020] The light-emitting module 901 comprises multiple components. These components include one or more light-emitting devices 1, a wiring board 101, a connector 201, and a thermistor 301.

[0021] The light-emitting module 901 may also have other components. For example, the light-emitting module 901 may have a different light-emitting device than the light-emitting device 1. Also, the light-emitting module 901 may not have some of the components listed here.

[0022] The components of the light-emitting module 901 will be described below.

[0023] (Light-emitting device 1) A light-emitting device 1 according to an embodiment will be described. Figures 5 to 17 are drawings illustrating an exemplary form of the light-emitting device 1. Figure 5 is a perspective view of the first light-emitting device 1A according to the embodiment. Figure 6 is a side view corresponding to Figure 5. Figure 7A is a top view of the first light-emitting device 1A according to the embodiment. Figure 7B is a cross-sectional view of the first light-emitting device 1A along the line VIIB-VIIB in Figure 7A. Figure 8 is a top view illustrating the internal structure of the first light-emitting device 1A according to the embodiment. Figure 9 is a perspective view of the second light-emitting device 1B according to the embodiment. Figure 10 is a side view corresponding to Figure 9. Figure 11A is a top view of the second light-emitting device 1B according to the embodiment. Figure 11B is a cross-sectional view of the second light-emitting device 1B along the line XIB-XIB in Figure 11A. Figure 12 is a top view illustrating the internal structure of the second light-emitting device 1B according to the embodiment. Figure 13 is a perspective view of the package 10 according to the embodiment. Figure 14A is a top view of the package 10 according to the embodiment. Figure 14B is a cross-sectional view of the package 10 along the line XIVB-XIVB in Figure 14A. Figure 15 is a top view of the substrate 11 according to the embodiment. Figure 16 is a bottom view of the substrate 11 according to the embodiment. Figure 17 is a cross-sectional view of the substrate 11 along the line XVII-XVII in Figure 15. Figures 13 to 17 show structures common to the first light-emitting device 1A and the second light-emitting device 1B.

[0024] The light-emitting device 1 comprises multiple components. These multiple components include a package 10, one or more light-emitting elements 20, one or more submounts 30, one or more reflective members 40, one or more protective elements 50, multiple wirings 60, and an optical member 70.

[0025] Furthermore, the light-emitting device 1 may have other components. For example, the light-emitting device 1 may have additional light-emitting elements in addition to the one or more light-emitting elements 20. Also, the light-emitting device 1 may not have some of the components listed here.

[0026] First, let's describe each component of the light-emitting device 1.

[0027] (Package 10) Package 10 comprises a base 11 and a lid 14. Package 10 is formed by joining the lid 14 to the base 11. Within package 10, an internal space is defined where other components are arranged. This internal space is a closed space surrounded by the base 11 and the lid 14. Furthermore, this internal space can be a space sealed in a vacuum or airtight state.

[0028] In a top view, the outer edge shape of package 10 is rectangular. This rectangle can have a long side and a short side. In the illustrated package 10, the direction of the long side of this rectangle is the same as the X direction, and the direction of the short side is the same as the Y direction. Note that the outer edge shape of package 10 does not have to be rectangular in a top view.

[0029] In package 10, an internal space is formed where other components are arranged. The first upper surface 11A of package 10 is part of the region that defines the internal space. In addition, each inner surface 11E and the lower surface 14B of package 10 are part of the region that defines the internal space.

[0030] The base 11 has a first upper surface 11A and a lower surface 11B. The base 11 has a second upper surface 11C. The base 11 has one or more outer surfaces 11D. The base 11 has one or more inner surfaces 11E. One or more outer surfaces 11D intersect with the second upper surface 11C. One or more outer surfaces 11D intersect with the lower surface 11B. One or more inner surfaces 11E intersect with the second upper surface 11C.

[0031] In a top view, the outer edge shape of the base body 11 is rectangular. In a top view, the base body 11 has a first direction X as its longitudinal direction and a second direction Y perpendicular to the first direction X as its short direction. In a top view, the outer edge shape of the base body 11 is the same as the outer edge shape of the package 10. In a top view, the outer edge shape of the first top surface 11A is rectangular. This rectangle can be a rectangle with a long side and a short side. The direction of the long side of the first top surface 11A is parallel to the direction of the long side of the outer edge shape of the base body 11. Note that in a top view, the outer edge shape of the first top surface 11A does not have to be rectangular.

[0032] In a top view, the first top surface 11A is surrounded by the second top surface 11C. The second top surface 11C is an annular surface that surrounds the first top surface 11A in a top view. The second top surface 11C is a rectangular annular surface. Here, the frame defined by the inner edge of the second top surface 11C is called the inner frame of the second top surface 11C, and the frame defined by the outer edge of the second top surface 11C is called the outer frame of the second top surface 11C.

[0033] The base 11 has a recess surrounded by a frame formed by the second upper surface 11C. The recess defines a portion of the base 11 that is recessed below the second upper surface 11C. The first upper surface 11A is part of the recess. One or more inner surfaces 11E are part of the recess. The second upper surface 11C is located above the first upper surface 11A.

[0034] The base 11 has one or more stepped portions 11F. Each stepped portion 11F has an upper surface 11G and a side surface 11H that intersects with the upper surface 11G and extends downward from the upper surface 11G. Here, each stepped portion 11F has only one upper surface 11G and one side surface 11H. The upper surface 11G intersects with the inner side surface 11E. The side surface 11H intersects with the first upper surface 11A.

[0035] Each of the stepped portions 11F is located inside the inner frame of the second upper surface 11C when viewed from above. Each of the stepped portions 11F is formed along part or all of the inner surface 11E when viewed from above. In the base body 11, the side surface 11H is an inner surface, but side surface 11H and inner surface 11E are different surfaces. Each of the inner surfaces 11E and each of the side surfaces 11H are perpendicular to the first upper surface 11A. Perpendicularity here allows for a difference of ±3 degrees.

[0036] One or more stepped sections 11F may include a first stepped section 11F1 and a second stepped section 11F2. The first stepped section 11F1 and the second stepped section 11F2 are provided at positions where their respective side surfaces 11H face each other. The first stepped section 11F1 and the second stepped section 11F2 are provided on the short side of the inner frame of the second upper surface 11C.

[0037] One or more inner surfaces 11E may include a first inner surface 11E1 and a second inner surface 11E2 that face each other. The first upper surface 11A is provided between the first inner surface 11E1 and the second inner surface 11E2 in a top view. The first stepped portion 11F1 is provided on the side of the first inner surface 11E1. The second stepped portion 11F2 is provided on the side of the second inner surface 11E2.

[0038] The base 11 has a base portion 11M and a frame portion 11N. The base portion 11M and the frame portion 11N may be made of different materials. The base 11 may be composed of a base member corresponding to the base portion 11M and a frame member corresponding to the frame portion 11N.

[0039] The base portion 11M includes a first upper surface 11A. The frame portion 11N includes a second upper surface 11C. The frame portion 11N includes one or more outer surfaces 11D and one or more inner surfaces 11E. The frame portion 11N includes one or more stepped portions 11F.

[0040] The lower surface of the base portion 11M constitutes part or all of the area of ​​the lower surface 11B of the base body 11. If the lower surface of the base portion 11M constitutes part of the area of ​​the lower surface 11B of the base body 11, the lower surface of the frame portion 11N constitutes the remaining area of ​​the lower surface 11B of the base body 11.

[0041] The base body 11 has a plurality of wiring sections 12. The plurality of wiring sections 12 include one or more internal wiring sections 12A arranged in the internal space of the package 10 and one or more external wiring sections 12B provided on the outer surface of the package 10.

[0042] One or each of the internal wiring sections 12A is provided on the upper surface 11G of the stepped section 11F. The base body 11 has one or more internal wiring sections 12A provided on the upper surface 11G of the first stepped section 11F1. The base body 11 has one or more internal wiring sections 12A provided on the upper surface 11G of the second stepped section 11F2.

[0043] One or each of the outer wiring sections 12B are provided on the lower surface 11B of the package 10. One or each of the outer wiring sections 12B are provided on the lower surface of the frame section 11N. The base body 11 has one or more outer wiring sections 12B provided on the side of the first stepped section 11F1. The base body 11 has one or more outer wiring sections 12B provided on the side of the second stepped section 11F2. In the base body 11, one or each of the inner wiring sections 12A are electrically connected to the outer wiring sections 12B.

[0044] The substrate 11 can be formed, for example, using ceramic as the main material. Examples of ceramics that can be used as the main material for the substrate 11 include aluminum nitride, silicon nitride, aluminum oxide, or silicon carbide.

[0045] Here, the main material refers to the material that accounts for the largest proportion in mass or volume of the object being considered. Furthermore, if the object is formed from a single material, that material is the main material. In other words, for a material to be the main material includes the possibility of that material accounting for 100% of the total.

[0046] The base body 11 may be formed using a base member and a frame member formed using different main materials. The base member can be formed using, for example, a metal or a composite containing a metal, graphite, diamond, or other material with excellent heat dissipation properties as the main material. Examples of metals that can be used as the main material of the base member include copper, aluminum, or iron. Examples of composites containing a metal that can be used as the main material of the base member include copper molybdenum or copper tungsten. The frame member can be formed using, for example, a ceramic as the main material, as mentioned above as the main material of the base body 11.

[0047] The wiring portion 12 of the substrate 11 can be formed, for example, using a metallic material as the main material. Examples of metallic materials that can be used as the main material for the wiring portion 12 of the substrate 11 include elemental metals such as Cu, Ag, Ni, Au, Ti, Pt, Pd, Cr, and W, or alloys containing these metals. The wiring portion 12 of the substrate 11 can be composed of, for example, one or more metallic layers.

[0048] The lid 14 has an upper surface 14A and a lower surface 14B. The lid 14 also has one or more side surfaces 14C. The lid 14 is constructed in the shape of a rectangular parallelepiped. However, the shape of the lid 14 does not have to be a rectangular parallelepiped.

[0049] The lid 14 is joined to the base 11. The lower surface 14B of the lid 14 is joined to the second upper surface 11C of the base 11. The lid 14 is joined to the base 11 via adhesive.

[0050] The lid 14 is translucent, meaning it transmits light. Here, translucency means that the transmittance of light incident on the lid 14 is 80% or more. The lid 14 may also have a non-translucent region (a region that does not transmit light) in part.

[0051] The lid 14 can be formed, for example, using glass as the main material. The lid 14 can also be formed, for example, using sapphire as the main material.

[0052] (Light-emitting element 20) The light-emitting element 20 has an upper surface 21A, a lower surface 21B, and a plurality of side surfaces 21C. The shape of the upper surface 21A is rectangular. This rectangle has a long side and a short side. The external shape of the light-emitting element 20 when viewed from above is rectangular. This rectangle has a long side and a short side. However, the shape of the upper surface 21A and the external shape of the light-emitting element 20 when viewed from above are not limited to these.

[0053] The light-emitting element 20 has a first electrode and a second electrode. The light-emitting element 20 has a light-emitting surface 22 that emits light. For example, a side surface 21C can be the light-emitting surface 22. The side surface 21C that becomes the light-emitting surface 22 intersects with the short side of the top surface 21A. Alternatively, for example, the top surface 21A can be the light-emitting surface 22. The light-emitting element 20 has one or more light-emitting surfaces 22.

[0054] For example, the light-emitting element 20 may be a light-emitting element that emits blue light. Alternatively, the light-emitting element 20 may be a light-emitting element that emits green light. Alternatively, the light-emitting element 20 may be a light-emitting element that emits red light. In addition, the light-emitting element 20 may be a light-emitting element that emits light of other colors or wavelengths.

[0055] Here, blue light is defined as light whose emission peak wavelength is in the range of 420 nm to 494 nm. Green light is defined as light whose emission peak wavelength is in the range of 495 nm to 570 nm. Red light is defined as light whose emission peak wavelength is in the range of 605 nm to 750 nm.

[0056] Examples of light-emitting elements 20 that emit blue light or green light include light-emitting elements containing nitride semiconductors. Examples of nitride semiconductors include GaN-based semiconductors such as GaN, InGaN, and AlGaN. Examples of light-emitting elements 20 that emit red light include light-emitting elements containing InAlGaP-based, GaInP-based, and GaAs-based semiconductors such as GaAs and AlGaAs.

[0057] The light-emitting element 20 can be, for example, a semiconductor laser element. Furthermore, the light-emitting element 20 can be a single-emitter semiconductor laser element consisting of one emitter. Alternatively, the light-emitting element 20 can be a multi-emitter semiconductor laser element consisting of multiple emitters. Note that the light-emitting element 20 is not limited to a semiconductor laser element; it may also be a light-emitting diode or the like.

[0058] Here, we will describe a semiconductor laser element, which is an example of a light-emitting element 20.

[0059] A semiconductor laser element emits directional laser light. Divergent light with a broad spread is emitted from the light-emitting surface 22 of the semiconductor laser element. The light emitted from the semiconductor laser element forms an elliptical far-field pattern (hereinafter referred to as "FFP") on a plane parallel to the light-emitting surface 22. FFP is the shape and light intensity distribution of the emitted light at a position away from the light-emitting surface of the semiconductor laser element.

[0060] Here, the light passing through the center of the elliptical shape of the FFP, in other words, the light with the peak intensity in the FFP's light intensity distribution, is referred to as light traveling along the optical axis, or light passing through the optical axis. Furthermore, in the FFP's light intensity distribution, 1 / e is applied to the peak intensity value. 2 Light with the above intensity will be referred to as the main part of the light.

[0061] The shape of the FFP (Fiber Focused Plane) of the light emitted from the semiconductor laser element is an ellipse, with the stacking direction being longer than the direction perpendicular to the stacking direction, in a plane parallel to the light emission surface 22. The stacking direction refers to the direction in which multiple semiconductor layers, including the active layer, are stacked in the semiconductor laser element. The direction perpendicular to the stacking direction can also be called the plane direction of the semiconductor layer. Furthermore, the major axis direction of the elliptical shape of the FFP can be called the speed axis direction of the semiconductor laser element, and the minor axis direction can be called the slow axis direction of the semiconductor laser element.

[0062] Based on the light intensity distribution of FFP, 1 / e of the peak light intensity 2 The angle at which light of a certain intensity spreads is defined as the divergence angle of the semiconductor laser element. Here, the divergence angle is calculated by dividing the light of peak intensity (light passing through the optical axis) by 1 / e of the peak intensity. 2 The angle of light divergence is expressed as the angle formed by light of intensity 1 / e of the peak light intensity. 2 In addition to the light intensity, it can also be determined from, for example, the light intensity at half the peak light intensity. In this specification, when we simply refer to the "angle of light divergence," we mean 1 / e of the peak light intensity. 2This refers to the angle of light divergence at a given light intensity.

[0063] The divergence angle in the speed axis direction of light emitted from a semiconductor laser element can be between 15 degrees and 40 degrees. The divergence angle in the slow axis direction of this light can be greater than 0 degrees and less than or equal to 10 degrees. Furthermore, the divergence angle in the speed axis direction is greater than the divergence angle in the slow axis direction.

[0064] (Submount 30) The submount 30 has an upper surface 31A, a lower surface 31B, and one or more side surfaces 31C. The upper surface 31A can be considered the mounting surface on which other components are mounted. The shape of the upper surface 31A is rectangular. This rectangle of the upper surface 31A may have a short side and a long side. However, the shape of the upper surface 31A does not have to be rectangular.

[0065] The external shape of the submount 30 in a top view is rectangular. This rectangle of the submount 30 may have a short side and a long side. However, the external shape of the submount 30 in a top view does not have to be rectangular. In a top view, the submount 30 may have an external shape in which the length in one direction (hereinafter referred to as the short side direction of the submount 30) is smaller than the length in the direction perpendicular to it (hereinafter referred to as the long side direction of the submount 30). In the illustrated submount 30, the short side direction is the same direction as the X direction, and the long side direction is the same direction as the Y direction.

[0066] (Reflective member 40) The reflective member 40 has a lower surface 41A and a light-reflecting surface 41B that reflects light. The light-reflecting surface 41B is inclined with respect to the lower surface 41A. The straight line connecting the lower end and upper end of the light-reflecting surface 41B is inclined with respect to the lower surface 41A. The angle at which the light-reflecting surface 41B is inclined with respect to the lower surface 41A is called the inclination angle of the light-reflecting surface 41B.

[0067] The light-reflecting surface 41B is flat. However, the light-reflecting surface 41B may be curved. The inclination angle of the light-reflecting surface 41B is 45 degrees. However, the inclination angle of the light-reflecting surface 41B does not have to be 45 degrees.

[0068] The main material of the reflective member 40 can be glass or metal. It is preferable to use a heat-resistant material as the main material of the reflective member 40. For example, the main material can be glass such as quartz or BK7 (borosilicate glass), or metal such as Al. The reflective member 40 can also be formed using Si as the main material.

[0069] If the main material is a reflective material such as Al, the light-reflecting surface 41B can be formed from the main material. Alternatively, instead of forming the light-reflecting surface 41B with the main material, the general shape of the reflective member 40 may be formed with the main material, and the light-reflecting surface 41B may be formed on the surface of the general shape. In this case, the light-reflecting surface 41B can be formed using, for example, a metal layer such as Ag or Al, or a dielectric multilayer film such as Ta2O5 / SiO2, TiO2 / SiO2, or Nb2O5 / SiO2.

[0070] The light-reflecting surface 41B has a reflectance of 90% or more with respect to the peak wavelength of light irradiated onto it. This reflectance may also be 95% or more. Furthermore, this reflectance may be 99% or more. The light reflectance is 100% or less, or less than 100%.

[0071] (Protection element 50) The protective element 50 is designed to prevent excessive current from flowing through a specific element (such as a semiconductor laser element) and causing it to be damaged. An example of the protective element 50 is a Zener diode. Furthermore, a Zener diode made of silicon can be used.

[0072] (Wiring 60) The wiring 60 is a linear conductive material with joints at both ends. The joints at both ends become connection points with other components. The wiring 60 is used for electrical connection between two components. The wiring 60 is, for example, a metal wire. The metal can be, for example, gold, aluminum, silver, copper, etc.

[0073] (Optical component 70) The optical member 70 has an upper surface 71A, a lower surface 71B, and one or more side surfaces 71C. The optical member 70 imparts an optical effect to light incident on it. The optical effects imparted to light by the optical member 70 include, for example, focusing, collimation, diffusion, polarization, diffraction, multiplexing, light guiding, reflection, and wavelength conversion.

[0074] The optical member 70 has an optical surface that provides an optical effect. The upper surface 71A, the lower surface 71B, or the side surface 71C can be the optical surface. Alternatively, the optical surface may be located at a position different from the upper surface 71A, the lower surface 71B, and the side surface 71C. For example, the optical surface may be formed inside the optical member 70 rather than on its surface.

[0075] The optical component 70 may have one or more lens surfaces 71D. The lens surface 71D is the optical working surface of the optical component 70. The optical component 70 having a lens surface 71D may also be called a lens component. Light that passes through the lens surface 71D and is emitted from the optical component 70 is subjected to optical effects such as focusing, diffusion, or collimation by the optical component 70. For example, the optical component 70 is a collimating lens that emits collimated light after light incident on the optical component 70.

[0076] One or each lens surface 71D is located on the upper surface 71A side. Alternatively, the lens surface 71D may be located on the lower surface 71B side. The upper surface 71A and the lower surface 71B are flat. One or each lens surface 71D intersects with the upper surface 71A. In a top view, one or each lens surface 71D is surrounded by the upper surface 71A.

[0077] In a top view, the outer shape of the optical element 70 is rectangular. However, the outer shape of the optical element 70 in a top view does not have to be rectangular. The bottom surface 71B is flat. No lens surface 71D is formed on the bottom surface 71B side of the optical element 70. The shape of the bottom surface 71B is rectangular. However, the shape of the bottom surface 71B does not have to be rectangular.

[0078] In the optical member 70, the portion that overlaps with the lens surface 71D when viewed from above is defined as the lens portion 72A. In the optical member 70, the portion that overlaps with the upper surface 71A when viewed from above is defined as the non-lens portion 72B. The lower surface 71B has a region that constitutes the lower surface of one or each of the lens portions 72A and a region that constitutes the lower surface of the non-lens portion 72B.

[0079] The optical member 70 may have a plurality of lens surfaces 71D formed in a continuous line in one direction. In a top view, the direction in which the plurality of lens surfaces 71D are aligned is called the lens connection direction. In the illustrated optical member 70, the connection direction is the same direction as the X direction.

[0080] Multiple lens surfaces 71D are formed such that the vertices of each lens surface 71D lie on a virtual straight line. This straight line connecting the vertices is parallel to the lower surface 71B of the optical member 70. Note that this parallelism includes a difference of up to ±5 degrees.

[0081] Some or all of the multiple lens surfaces 71D may have the same curvature, and two or more of these lens surfaces 71D may have the same curvature. All of the multiple lens surfaces 71D may have the same curvature.

[0082] The optical component 70 is translucent. The optical component 70 has a transmittance of 80% or more for the peak wavelength of light incident on it. The optical component 70 may have a translucent region and a non-translucent region (hereinafter referred to as the non-translucent region). In the non-translucent region, the transmittance for the peak wavelength of light incident on the optical component 70 is 50% or less. The optical component 70 can be formed using glass such as BK7, for example.

[0083] Next, the light-emitting device 1 will be described.

[0084] (Light-emitting device 1) In the light-emitting device 1, one or more light-emitting elements 20 are arranged on a base 11. One or more light-emitting elements 20 are arranged on the base portion 11M. One or more light-emitting elements 20 are arranged on the first upper surface 11A. One or more light-emitting elements 20 are arranged in a line in one direction. The frame portion 11N surrounds the one or more light-emitting elements 20 arranged on the base portion 11M when viewed from above.

[0085] One or more light-emitting elements 20 are arranged on one or more submounts 30. One or more light-emitting elements 20 are arranged on the substrate 11 via one or more submounts 30. One or each light-emitting element 20 is arranged on the wiring layer 33 of the submount 30.

[0086] Only one light-emitting element 20 is arranged on each of the submounts 30. The light-emitting device 1 does not have a submount 30 on which two light-emitting elements 20 are arranged. However, it may have a submount 30 on which two or more light-emitting elements 20 are arranged.

[0087] In the light-emitting device 1, one or more reflective members 40 are arranged on the base body 11. The one or more reflective members 40 are arranged on the first upper surface 11A. The one or more reflective members 40 reflect the light emitted from the one or more light-emitting elements 20. The light reflected by the one or more reflective members 40 travels upward.

[0088] When viewed from above, the optical axes of the light emitted from one or more light-emitting elements 20 irradiate one or more reflective members 40 along a straight line passing through the light-reflecting surface 41B. When the light-emitting device 1 has multiple light-emitting elements 20, the positions where the optical axes of the light emitted from each light-emitting element 20 irradiate one or more reflective members 40 lie on a single straight line when viewed from above. The alignment of the irradiation points of the optical axes on a straight line facilitates optical control.

[0089] In the light-emitting device 1, one or more protective elements 50 are arranged on the substrate 11. The one or more protective elements 50 are arranged on one or more submounts 30. The protective elements 50 arranged on the submounts 30 protect the light-emitting elements 20 arranged on the submounts 30. One or each of the protective elements 50 are arranged in the wiring layer 33 of the submount 30.

[0090] In the light-emitting device 1, multiple wires 60 are used for the electrical connection of one or more light-emitting elements 20. By connecting an appropriate number of wires 60 to the package 10, the light-emitting elements 20, or the submount 30, one or more light-emitting elements 20 can be electrically connected to the package 10. This allows power to be supplied from an external power supply electrically connected to the package 10 to one or more light-emitting elements 20 arranged in the internal space of the package 10.

[0091] The wiring 60 that connects to the package 10 connects to the internal wiring section 12A located in the internal space of the package 10. The multiple wirings 60 include one or more wirings 60 that connect to the internal wiring section 12A provided on the first inner surface 11E1 side, and one or more wirings 60 that connect to the internal wiring section 12A provided on the second inner surface 11E2 side. The first inner surface 11E1 and the second inner surface 11E2 face each other in the second direction.

[0092] In the light-emitting device 1, the light emitted from one or more light-emitting elements 20 is emitted from the top surface 14A of the package 10. Here, the light emitted from one light-emitting element 20 is referred to as the light of one element. The light emitted from the light-emitting device 1 includes the light of one or more elements.

[0093] The light from the main portion of one element does not overlap with the light from the main portions of other elements on the upper surface 14A. The light from the main portions of each element does not overlap with each other on the upper surface 14A.

[0094] In the light-emitting device 1, the optical component 70 is fixed to the package 10. The optical component 70 is connected to the package 10. The optical component 70 is bonded to the package 10 via an adhesive. For example, an ultraviolet-curing adhesive can be used as the adhesive.

[0095] The optical element 70 is positioned above the package 10. Light emitted from the top surface 14A enters the optical element 70, is subjected to an optical effect, and then exits from the optical element 70. For example, the optical axes of the light from each element enter different lens surfaces, the light from each element is collimated, and then exits from the optical element 70.

[0096] (Wiring board 101) A wiring board 101 according to an embodiment will now be described. Figure 19A is a top view of the wiring board 101 according to an embodiment. Figure 19B is a diagram showing the wiring pattern of the wiring board 101 according to an embodiment. Figure 19C is a diagram showing the top view of the wiring board 101 according to an embodiment and the wiring pattern superimposed.

[0097] The wiring board 101 has an upper surface 101A, a lower surface 101B, and one or more side surfaces 101C. The wiring board 101 has a plate-like shape. In a top view, the outer edge shape of the wiring board 101 is rectangular. This rectangle can be a rectangle having a long side and a short side. In the wiring board 101 according to this embodiment, in a top view, the first direction X is the longitudinal direction, and the second direction Y, perpendicular to the first direction X, is the short direction.

[0098] The wiring board 101 is provided with one or more through holes 101H that serve as fixing points. These one or more through holes 101H include those used to fix the wiring board 101 to other members (components). For example, screws are inserted into the through holes 101H to fix the wiring board 101 to other members. These one or more through holes 101H include those used to determine the position of the wiring board 101 when it is fixed to other members.

[0099] The wiring board 101 includes a heat dissipation section 101D, an electrode section 101E, and an insulating section 101F. The heat dissipation section 101D functions as a heat dissipation path for heat emitted from other components mounted on the wiring board 101. The electrode section 101E is electrically connected to the other components mounted on the wiring board 101.

[0100] The insulating portion 101F insulates the heat dissipation portion 101D from the electrode portion 101E. The insulating portion 101F is provided on the wiring board 101 to insulate the electrical connection between the heat dissipation portion 101D and the electrode portion 101E.

[0101] The upper surface 101A of the wiring board 101 has a heat dissipation section 101D, an electrode section 101E, and an insulating section 101F, with the region where the heat dissipation section 101D is located at the highest point (hereinafter referred to as the heat dissipation region of the upper surface 101A), the region where the electrode section 101E is located at the highest point (hereinafter referred to as the electrode region of the upper surface 101A), and the region where the insulating section 101F is located at the highest point (hereinafter referred to as the insulating region of the upper surface 101A). On the upper surface 101A, the heat dissipation region and the electrode region are separated by the insulating region.

[0102] The wiring board 101 comprises a heat dissipation member 111, a plurality of electrode members 121, and one or more insulating members 131. The heat dissipation section 101D includes the heat dissipation member 111, the electrode section 101E includes a plurality of electrode members 121, and the insulating section 101F includes one or more insulating members 131.

[0103] The wiring board 101 has a mounting surface that includes an electrode region. The upper surface 101A of the wiring board 101 can be a mounting surface. The electrode portion 101E has a first electrode portion 103A and a second electrode portion 103B in the electrode region. Furthermore, the electrode portion 101E has a third electrode portion 103C in the electrode region. Different components are mounted on the first electrode portion 103A, the second electrode portion 103B, and the third electrode portion 103C, respectively.

[0104] The first electrode portion 103A has a plurality of first electrode regions 103A1 that are not electrically connected to each other. The first electrode portion 103A has a plurality of first electrode regions 103A1 that are electrically connected to each other. The second electrode portion 103B has a plurality of second electrode regions 103B1 that are not electrically connected to each other. The third electrode portion 103C has a plurality of third electrode regions 103C1 that are not electrically connected to each other.

[0105] Among the multiple first electrode regions 103A1 and multiple second electrode regions 103B1, there are first electrode regions 103A1 and second electrode regions 103B1 that are electrically connected. Also, among the multiple first electrode regions 103A1 and multiple third electrode regions 103C1, there are first electrode regions 103A1 and third electrode regions 103C1 that are electrically connected.

[0106] The electrically connected first electrode region 103A1 and the second electrode region 103B1 are each part of a single electrode member 121. The electrically connected first electrode region 103A1 and the third electrode region 103C1 are each part of a single electrode member 121.

[0107] One or more insulating members 131 are partially provided on the electrode member 121 when viewed from above. The insulating members 131 make a single connected electrode member 121 appear to be divided into multiple regions. In this way, a wiring pattern 101G is formed on the upper surface 101A of the wiring board 101.

[0108] The heat dissipation member 111 can use a metallic material as its main material. For example, elemental metals such as Cu, Ag, Al, Ni, Rh, Au, Ti, Pt, Pd, Mo, Cr, and W, or alloys containing these metals, can be used as the main material of the heat dissipation member 111. It is preferable that the heat dissipation member 111 be formed from a material with excellent heat dissipation properties. The heat dissipation member 111 may be formed containing 95% by mass or more of copper.

[0109] The electrode member 121 can use a metallic material as its main material. For example, elemental metals such as Cu, Ag, Al, Ni, Rh, Au, Ti, Pt, Pd, Mo, Cr, and W, or alloys containing these metals, can be used as the main material of the electrode member 121.

[0110] The insulating member 131 is formed of an insulating material. For example, polyimide can be used as the main material for the insulating member 131. Alternatively, the main material for the insulating member 131 can be glass epoxy, which is obtained by impregnating one or more sheets of glass cloth with a thermosetting insulating resin such as epoxy resin and curing the thermosetting insulating resin, or liquid crystal polymer. For example, a film-like polyimide can be used for the first insulating member 131A, and a resist such as solder resist can be used for the second insulating member 131B.

[0111] (Connector 201) A connector 201 according to an embodiment will be described. Figure 20 is a drawing illustrating an exemplary form of the connector 201 and the wiring pattern near the connector 201. Figure 20A is a top view of the connection portion according to the embodiment. Figure 20B is a diagram showing the wiring pattern of the wiring board 101 near the connection portion according to the embodiment. Figure 20C is a diagram showing the top view of the connection portion and the wiring pattern near the connection portion according to the embodiment. Note that in Figures 20A and 20C, the main body portion 202 of the connector 201 is shown with hatching.

[0112] Connector 201 is an example of a connecting component used for electrical connection to an external power source. Power is supplied from the external power source to components and devices electrically connected to connector 201 via connector 201. Connector 201 has an insertion slot into which a connector cable is inserted. When viewed from above, the first direction X is the longitudinal direction and the second direction Y is the short direction. Connector 201 is also provided with an insertion slot into which an FPC wiring is inserted.

[0113] The connector 201 has a main body 202 that has a longitudinal and transverse direction in a plan view. The main body 202 includes an insertion opening. Each of the multiple connection terminals 203 has a projection 204 that extends from the main body 202 to the outside of the main body 202 in a plan view. Each of the multiple connection terminals 203 is independent in terms of electrical connection.

[0114] In connector 201, the plurality of connection terminals 203 include a first connection terminal 203A, a second connection terminal 203B, a third connection terminal 203C, and a fourth connection terminal 203D. The plurality of connection terminals 203 may further include a fifth connection terminal 203E. The plurality of connection terminals 203 may further include a sixth connection terminal located on the opposite side of the fifth connection terminal 203E.

[0115] The first projection 204A of the first connector 203A extends from the main body 202 in the short direction. The third projection 204C of the third connector 203C extends from the main body 202 in the short direction. The fourth projection 204D of the fourth connector 203D extends from the main body 202 in the short direction. The fifth projection 204E of the fifth connector 203E extends from the main body 202 in the short direction. The second projection 204B of the second connector 203B extends from the main body 202 in the longitudinal direction. The projection 204 of the sixth connector extends from the main body 202 in the longitudinal direction. Each projection 204, or any of the projections 204, is narrower than the main body 202 in the direction of projection from the main body 202.

[0116] In the illustrated connector 201, the first connection terminal 203A and the fourth connection terminal 203D extend from the main body 202 in the positive Y direction. The third connection terminal 203C and the fifth connection terminal 203E extend from the main body 202 in the negative Y direction. The second connection terminal 203B extends from the main body 202 in the positive X direction.

[0117] In a plan view, one or more additional connection terminals may be provided between the first connection terminal 203A and the fourth connection terminal 203D. Also, in a plan view, one or more additional connection terminals may be provided between the third connection terminal 203C and the fifth connection terminal 203E.

[0118] The protrusions 204 of the multiple connection terminals 203 are provided along the outer edge of the main body 202 in a plan view. In the illustrated connector 201, in a plan view, the protrusions 204 of the first connection terminal 203A, the second connection terminal 203B, the fifth connection terminal 203E, the third connection terminal 203C, and the fourth connection terminal 203D are arranged in this order along the outer edge of the main body 202. In a plan view, no other connection terminals are located on the outer edge portion of the main body 202 between the protrusion 204 of the first connection terminal 203A and the protrusion 204 of the second connection terminal 203B.

[0119] In connector 201, the rated current of each terminal 203 may be specified. The rated current may be specified as part of the specifications of connector 201, for example, by the manufacturer of connector 201 for product warranty and safety purposes. In connector 201, the rated currents of the first terminal 203A, the second terminal 203B, the third terminal 203C, and the fourth terminal 203D are all the same. Furthermore, the fifth terminal 203E and the sixth terminal may also have the same rated current.

[0120] (Thermistor 301) In the light-emitting module 901, the thermistor 301 is placed on the wiring board 101. The thermistor 301, as a temperature measuring element, can be used as an element for measuring temperature.

[0121] Next, we will describe the light-emitting module 901.

[0122] (Light-emitting module 901) In the light-emitting module 901 according to the embodiment, one or more light-emitting devices 1 are mounted on a wiring board 101. The one or more light-emitting devices 1 may include a first light-emitting device 1A and a second light-emitting device 1B. The one or more light-emitting elements 20 provided in the first light-emitting device 1A include one or more first light-emitting elements 20A. The one or more light-emitting elements 20 provided in the second light-emitting device 1B include one or more second light-emitting elements 20B. Furthermore, the one or more light-emitting elements 20 provided in the second light-emitting device 1B may include one or more third light-emitting elements 20C.

[0123] The first light-emitting device 1A comprises a first package 10A on which one or more first light-emitting elements 20A are arranged. The second light-emitting device 1B comprises a second package 10B on which one or more second light-emitting elements 20B are arranged. The first package 10A and the second package 10B have the same external shape.

[0124] The first light-emitting device 1A has a plurality of inner wiring sections 12A on the base body 11, including a first inner wiring section 12A1 and a second inner wiring section 12A2. The first inner wiring section 12A1 is provided on the first inner surface 11E1 side, and the second inner wiring section 12A2 is provided on the second inner surface 11E2 side. (See Figure 8)

[0125] In the first light-emitting device 1A, the plurality of wirings 60 include wirings 60 connected to the first inner wiring section 12A1 and wirings 60 connected to the second inner wiring section 12A2. One or more first light-emitting elements 20A are electrically connected to the first inner wiring section 12A1 and the second inner wiring section 12A2. In the illustrated first light-emitting device 1A, the plurality of first light-emitting elements 20A are connected in series and electrically connected to the first inner wiring section 12A1 and the second inner wiring section 12A2.

[0126] The second light-emitting device 1B has a plurality of inner wiring sections 12A on the base body 11, including a first inner wiring section 12A1 and a second inner wiring section 12A2. Furthermore, the plurality of inner wiring sections 12A further include a third inner wiring section 12A3 and a fourth inner wiring section 12A4. The first inner wiring section 12A1 and the second inner wiring section 12A2 are provided on the first inner surface 11E1 side. The third inner wiring section 12A3 and the fourth inner wiring section 12A4 are provided on the second inner surface 11E2 side. (See Figure 12)

[0127] In the second light-emitting device 1B, the plurality of wirings 60 include wirings 60 connected to the first inner wiring section 12A1 and wirings 60 connected to the second inner wiring section 12A2. One or more second light-emitting elements 20B are electrically connected to the first inner wiring section 12A1 and the second inner wiring section 12A2. In the illustrated second light-emitting device 1B, the plurality of second light-emitting elements 20B are connected in series and electrically connected to the first inner wiring section 12A1 and the second inner wiring section 12A2.

[0128] Furthermore, the multiple wirings 60 may include wirings 60 connected to the third inner wiring section 12A3 and wirings 60 connected to the fourth inner wiring section 12A4. One or more third light-emitting elements 20C are electrically connected to the third inner wiring section 12A3 and the fourth inner wiring section 12A4. In the illustrated second light-emitting device 1B, multiple third light-emitting elements 20C are connected in series and electrically connected to the third inner wiring section 12A3 and the fourth inner wiring section 12A4.

[0129] The first light-emitting device 1A has an outer wiring section 12B that is electrically connected to the first inner wiring section 12A1 and an outer wiring section 12B that is electrically connected to the second inner wiring section 12A2. In the illustrated first light-emitting device 1A, the outer wiring section 12B that is electrically connected to the first inner wiring section 12A1 is the first outer wiring section 12B1, and the outer wiring section 12B that is electrically connected to the second inner wiring section 12A2 is the fourth outer wiring section 12B4. The second outer wiring section 12B2 and the third outer wiring section 12B3 are not essential for the electrical connection of one or more first light-emitting elements 20A in the first light-emitting device 1A.

[0130] The second light-emitting device 1B has an outer wiring section 12B that is electrically connected to the first inner wiring section 12A1 and an outer wiring section 12B that is electrically connected to the second inner wiring section 12A2. In the illustrated second light-emitting device 1B, the outer wiring section 12B that is electrically connected to the first inner wiring section 12A1 is the third outer wiring section 12B3, and the outer wiring section 12B that is electrically connected to the second inner wiring section 12A2 is the fourth outer wiring section 12B4.

[0131] The second light-emitting device 1B further includes an outer wiring section 12B electrically connected to the third inner wiring section 12A3 and an outer wiring section 12B electrically connected to the fourth inner wiring section 12A4. In the illustrated second light-emitting device 1B, the outer wiring section 12B electrically connected to the third inner wiring section 12A3 is the first outer wiring section 12B1, and the outer wiring section 12B electrically connected to the fourth inner wiring section 12A4 is the second outer wiring section 12B2.

[0132] The second light-emitting device 1B has two electrically connected external wiring sections 12B. Of these two external wiring sections 12B, one is provided on the first internal surface 11E1 side, and the other external wiring section 12B is provided on the second internal surface 11E2 side. In the illustrated second light-emitting device 1B, the second external wiring section 12B2 and the fourth external wiring section 12B4 are electrically connected.

[0133] The first light-emitting element 20A may be a light-emitting element that emits red light, a light-emitting element that emits green light, or a light-emitting element that emits blue light. Similarly, the second light-emitting element 20B may be a light-emitting element that emits red light, a light-emitting element that emits green light, or a light-emitting element that emits blue light. Note that the light emitted by the second light-emitting element 20B may be of a different color than the light emitted by the first light-emitting element 20A.

[0134] The third light-emitting element 20C may be any of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, or a light-emitting element that emits blue light. The third light-emitting element 20C may emit light of a color different from the color of the light emitted by the first light-emitting element 20A and the color of the light emitted by the second light-emitting element 20B.

[0135] Here, the wavelength range for red light is 640nm to 770nm, the wavelength range for green light is 490nm to 550nm, and the wavelength range for blue light is 430nm to 490nm. The light-emitting element 20 may emit other visible light, or light other than visible light. The light-emitting module 901 can realize an RGB light source that emits red, green, and blue light by comprising the first light-emitting element 20A, the second light-emitting element 20B, and the third light-emitting element 20C.

[0136] In the light-emitting module 901, the connector 201 connects to the first electrode section 103A. Multiple connection terminals 203 of the connector 201 connect to multiple first electrode regions 103A1. The first light-emitting device 1A connects to the second electrode section 103B. Multiple external wiring sections 12B of the first light-emitting device 1A connect to multiple second electrode regions 103B1. The second light-emitting device 1B connects to the third electrode section 103C. Multiple external wiring sections 12B of the second light-emitting device 1B connect to the third electrode section 103C.

[0137] Here, in a wiring board 101 on which one or more light-emitting devices 1 and connectors 201 are mounted, an electrode section 101E that connects to two of the components of the one or more light-emitting devices 1 and connectors 201, and forms a current path between these two components without the intervening components, is defined as one wiring section 104 on the wiring board 101. One wiring section 104 may have one or more electrode members 121. The light-emitting module 901 has multiple wiring sections 104. Furthermore, each of the multiple wiring sections 104 is independent in terms of electrical connection.

[0138] The wiring board 101 has a first wiring section 104A, which is a wiring section 104 that connects to the connector 201 and the second light-emitting device 1B. The first wiring section 104A connects to the outer wiring section 12B of the second light-emitting device 1B. The first wiring section 104A also connects to the first connection terminal 203A and the second connection terminal 203B of the connector 201. As a result, the first wiring section 104A can carry a current equal to the sum of the ratings of the two connection terminals 203, the first connection terminal 203A and the second connection terminal 203B, enabling the realization of a light-emitting module that can be driven at high output.

[0139] In the illustrated light-emitting module 901, one third electrode region 103C1 of the third electrode portion 103C of the first wiring portion 104A is connected to the second outer wiring portion 12B2 of the second light-emitting device 1B. In addition, one of the two first electrode regions 103A1 of the first electrode portion 103A of the first wiring portion 104A is connected to the first connection terminal 203A, and the other is connected to the second connection terminal 203B.

[0140] The wiring board 101 has a second wiring section 104B, which is a wiring section 104 that connects to the connector 201 and the first light-emitting device 1A. The second wiring section 104B connects to the outer wiring section 12B of the first light-emitting device 1A. The second wiring section 104B also connects to the third connection terminal 203C of the connector 201. The number of connection terminals 203 connected to the second wiring section 104B is less than the number of connection terminals 203 connected to the first wiring section 104A.

[0141] In the illustrated light-emitting module 901, one second electrode region 103B1 of the second electrode portion 103B of the second wiring portion 104B is connected to the second outer wiring portion 12B2 of the first light-emitting device 1A. Also, one first electrode region 103A1 of the first electrode portion 103A of the second wiring portion 104B is connected to the third connection terminal 203C.

[0142] The wiring board 101 has a third wiring section 104C, which is a wiring section 104 that connects to the connector 201 and the second light-emitting device 1B. The third wiring section 104C connects to the outer wiring section 12B of the second light-emitting device 1B. The third wiring section 104C also connects to the fourth connection terminal 203D of the connector 201. The number of connection terminals 203 connected to the third wiring section 104C is less than the number of connection terminals 203 connected to the first wiring section 104A.

[0143] In the illustrated light-emitting module 901, one third electrode region 103C1 of the third electrode portion 103C of the third wiring portion 104C is connected to the third outer wiring portion 12B3 of the second light-emitting device 1B. Also, one first electrode region 103A1 of the first electrode portion 103A of the third wiring portion 104C is connected to the fourth connection terminal 203D.

[0144] The wiring board 101 has a fourth wiring section 104D, which is a wiring section 104 that connects to the connector 201 and the second light-emitting device 1B. The fourth wiring section 104D connects to the outer wiring section 12B of the second light-emitting device 1B. The fourth wiring section 104D also connects to the fifth connection terminal 203E of the connector 201. The number of connection terminals 203 connected to the fourth wiring section 104D is less than the number of connection terminals 203 connected to the first wiring section 104A.

[0145] In the illustrated light-emitting module 901, one third electrode region 103C1 of the third electrode portion 103C of the fourth wiring portion 104D is connected to the first outer wiring portion 12B1 of the second light-emitting device 1B. Also, one first electrode region 103A1 of the first electrode portion 103A of the fourth wiring portion 104D is connected to the fifth connection terminal 203E.

[0146] The wiring board 101 has a fifth wiring section 104E, which is a wiring section 104 that connects to the first light-emitting device 1A and the second light-emitting device 1B. The fifth wiring section 104E connects to the outer wiring sections 12B of the first light-emitting device 1A and the second light-emitting device 1B, respectively. In the illustrated light-emitting module 901, the fourth outer wiring section 12B4 of the first light-emitting device 1A and the fourth outer wiring section 12B4 of the second light-emitting device 1B are connected to the fifth wiring section 104E.

[0147] In the light-emitting module 901, the first wiring section 104A is connected to the light-emitting device 1 so as to be electrically connected to one or more first light-emitting elements 20A and one or more second light-emitting elements 20B on the first electrode side. Furthermore, the first wiring section 104A is connected to the light-emitting device 1 so as to be electrically connected to one or more third light-emitting elements 20C on the first electrode side.

[0148] Note that "first electrode side" refers to the position on the cathode side of the circuit, for example, when the first electrode is the cathode, and does not indicate physical proximity. Similarly, "second electrode side" refers to the position on the anode side of the circuit, for example, when the second electrode is the anode, and does not indicate physical proximity.

[0149] The second wiring section 104B is connected to the light-emitting device 1 so as to be electrically connected to one or more first light-emitting elements 20A on the second electrode side. The third wiring section 104C is connected to the light-emitting device 1 so as to be electrically connected to one or more second light-emitting elements 20B on the second electrode side. The fourth wiring section 104D is connected to the light-emitting device 1 so as to be electrically connected to one or more third light-emitting elements 20C on the second electrode side.

[0150] Thus, in the light-emitting module 901, the first wiring section 104A is electrically connected to one electrode side of each of the two light-emitting devices 1 to the light-emitting elements 20, and this first wiring section 104A is connected to two connection terminals 203, thereby realizing a light-emitting module that can be driven at high output. Furthermore, the light-emitting element 20 of one of the two light-emitting devices 1 is electrically connected to the first wiring section 104A on one electrode side via the fifth wiring section 104E and further via the package 10 of the other light-emitting device 1. In the illustrated light-emitting module 901, the two light-emitting elements 20 are the first light-emitting element 20A and the second light-emitting element 20B, or the first light-emitting element 20A and the third light-emitting element 20C.

[0151] Alternatively, in the light-emitting module 901, a first wiring section 104A is electrically connected to one electrode side of both light-emitting elements 20 of a single light-emitting device 1, and this first wiring section 104A is connected to two connection terminals 203, thereby realizing a light-emitting module that can be driven at high output. In the illustrated light-emitting module 901, the two light-emitting elements 20 are the second light-emitting element 20B and the third light-emitting element 20C.

[0152] By selecting two connection terminals 203 that do not have other connection terminals in between, it becomes easier to form the first wiring section 104A on the wiring board 101. The difference in distance from the outer wiring section 12B of the light-emitting device 1 connected to the first wiring section 104A to the two connection terminals 203 can be reduced, which contributes to an even distribution of current to the two connection terminals 203.

[0153] In the light-emitting module 901, a thermistor 301 is mounted on the wiring board 101. The thermistor 301 is positioned between the light-emitting device 1 and the connector 201 when viewed from above. The thermistor 301 is electrically connected to the connector 201 via the electrode portion 101E.

[0154] In the light-emitting module 901, the current expected when the thermistor 301 is functioning is sufficiently small compared to the current used to drive the light-emitting element 20. Therefore, in the connector 201, the required rating (performance) of the connection terminal that electrically connects to the thermistor 301 is sufficiently small compared to the required rating (performance) of the connection terminal 203 that electrically connects to the light-emitting element 20.

[0155] Although various embodiments of the present invention have been described above, the light-emitting module 901 according to the present invention is not strictly limited to the light-emitting device 1 of each embodiment. In other words, the present invention is not limited to the external form and structure of the light-emitting module 901 disclosed in each embodiment. The present invention can be applied without requiring all components to be present. For example, if some of the components of the light-emitting module 901 disclosed in the embodiment are not described in the claims, a degree of design freedom for those skilled in the art is permitted for those components, such as substitution, omission, modification of shape, and change of material, and the invention described in the claims is then specified to be applicable.

[0156] Through the information described herein so far, the following technical matters are disclosed: (Section 1) One or more light-emitting devices, Wiring board and The wiring board is mounted on the aforementioned wiring board and comprises a connecting member that is electrically connected to an external power supply to supply power to the one or more light-emitting devices, The one or more light-emitting devices described above are: The present invention comprises one or more first light-emitting elements and one or more second light-emitting elements, each having a first electrode and a second electrode, The aforementioned wiring board is It has a plurality of wiring sections, including a first wiring section, a second wiring section, and a third wiring section, each of which is independent in terms of electrical connection. The aforementioned connecting member is It has multiple connection terminals, including a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal, each of which is independent in terms of electrical connection. The first connection terminal and the second connection terminal are connected to the first wiring section. The third connection terminal is connected to the second wiring section, The fourth connection terminal is connected to the third wiring section, The first wiring section is connected to the light-emitting device such that it is electrically connected to the one or more first light-emitting elements and the one or more second light-emitting elements on the first electrode side. The second wiring section is connected to the light-emitting device so as to be electrically connected to the one or more first light-emitting elements on the second electrode side. The third wiring section is connected to the light-emitting device so as to be electrically connected to the one or more second light-emitting elements on the second electrode side. Light-emitting module. (Section 2) The plurality of light-emitting elements further include one or more third light-emitting elements, The plurality of wiring sections further include a fourth wiring section, The plurality of connection terminals further include a fifth connection terminal, The fifth connection terminal is connected to the fourth wiring section, The first wiring section is connected to the light-emitting device so as to be electrically connected to the one or more third light-emitting elements on the first electrode side. The fourth wiring section is connected to the light-emitting device so as to be electrically connected to the one or more third light-emitting elements on the second electrode side. The light-emitting module described in item 1. (Section 3) The first light-emitting element is one of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light. The second light-emitting element is one of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light, and the light emitted by the first light-emitting element is of a different color than the light emitted by the first light-emitting element. The third light-emitting element is one of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light, and the color of the light emitted is different from both the color of the light emitted by the first light-emitting element and the color of the light emitted by the second light-emitting element. The light-emitting module described in item 2. (Section 4) The one or more light-emitting devices include a first light-emitting device and a second light-emitting device. The first light-emitting device has the one or more first light-emitting elements, The second light-emitting device has the one or more second light-emitting elements, Light-emitting modules as described in items 1-3. (Section 5) The one or more light-emitting devices include a first light-emitting device and a second light-emitting device. The first light-emitting device has the one or more first light-emitting elements, The second light-emitting device has one or more second light-emitting elements and one or more third light-emitting elements. The light-emitting module according to claims 2 to 3. (Section 6) The plurality of wiring sections further include a fifth wiring section to which the first light-emitting device and the second light-emitting device are connected. The one or more first light-emitting elements are electrically connected to the first wiring section via the fifth wiring section. Light-emitting module as described in item 4 or 5. (Section 7) The first light-emitting device has a first wiring section connected to the second wiring section of the wiring board, and a second wiring section connected to the fifth wiring section of the wiring board. The second light-emitting device has a first wiring section connected to the first wiring section of the wiring board, a second wiring section connected to the third wiring section of the wiring board, and a third wiring section connected to the fifth wiring section of the wiring board. The light-emitting module described in item 6. (Section 8) The first light-emitting device comprises a first package on which the one or more first light-emitting elements are arranged. The second light-emitting device comprises a second package on which the one or more second light-emitting elements are arranged. The first package and the second package have the same external appearance. Light-emitting modules as described in items 4-7. (Section 9) The first package comprises a base body comprising a base portion on which the one or more first light-emitting elements are arranged, and a frame portion that surrounds the one or more first light-emitting elements arranged on the base portion in a plan view, and a lid body that is joined to the upper surface of the frame portion. The second package comprises a base comprising a base on which the one or more second light-emitting elements are arranged, a frame portion that surrounds the one or more second light-emitting elements arranged on the base portion in a plan view, and a lid that is joined to the upper surface of the frame portion. The light-emitting module described in item 8. (Section 10) The first light-emitting device comprises a first lens member, The second light-emitting device comprises a second lens member. Light-emitting modules as described in items 8-9. (Section 11) The rated currents of the first, second, third, and fourth connection terminals are all the same. Light-emitting modules as described in items 1 to 10. (Section 12) The connecting member has a main body portion that has a longitudinal direction and a transverse direction in a plan view, Each of the aforementioned plurality of connection terminals has a projection that extends from the main body to the outside of the main body in the plan view. The protruding portion of the first connection terminal extends from the main body in the shorter direction, The protruding portion of the second connection terminal extends from the main body in the longitudinal direction. Light-emitting modules as described in items 1 to 11. (Section 13) In the aforementioned connecting member, in a plan view, no other connecting terminals are provided on the outer edge portion of the main body between the protrusion of the first connecting terminal and the protrusion of the second connecting terminal. The light-emitting module described in item 12. [Industrial applicability]

[0157] The light-emitting device 1 described in the embodiment can be used in a projector. In other words, a projector can be considered one application of the present invention. However, the present invention is not limited to this and can be used in various applications such as lighting, exposure, in-vehicle headlights, head-mounted displays, and backlights for other displays. [Explanation of Symbols]

[0158] 1. Light-emitting device 10 packages 11 Base 11A 1st top surface 11B Bottom side 11C 2nd top surface 11D External surface 11E Inside surface 11th floor step section 11F1 First step section 11F2 Second step section 11G top surface 11H side 11M base 11N frame 12 (Wiring section of the light-emitting device) 12A inner wiring section 12A1 1st inner wiring section 12A2 2nd inner wiring section 12A3 3rd inner wiring section 12A4 4th inner wiring section 12B Outside wiring section 12B1 First outer wiring section 12B2 2nd outer wiring section 12B3 Third outer wiring section 12B4 4th outer wiring section 14 Lid 14A Top 14B Bottom 14C side 20. Semiconductor laser elements (light-emitting elements) 21A Top 21B Bottom side 21C side 22 Light exit surface 30 Submount 31A Top 31B Bottom surface 31C side 40 Reflective material 41A Bottom 41B Light reflective surface 50 protective elements 60 Wiring 70 Optical components (lens components) 71A Top 71B Bottom side 71C side 71D Lens surface (optical surface) 72A Lens section 72B Non-lens section 101 Wiring board 101D Heat dissipation part 101E Electrode part 101F Insulation 103A 1st electrode part 103A1 1st electrode area 103B 2nd electrode part 103B1 2nd electrode area 103C 3rd electrode part 103C1 3rd electrode area 104 Wiring section (of a wiring board) 104A 1st wiring section 104B 2nd wiring section 104C 3rd wiring section 104D 4th wiring section 104E 5th wiring section 111 Heat dissipation component 121 Electrode Member 131 Insulating material 201 Connector (connecting component) 202 Main body 203A First connection terminal 203B Second connection terminal 203C Third connection terminal 203D 4th connection terminal 203E Fifth connection terminal 204A 1st protrusion 204B Second protrusion 204C Third protrusion 204D 4th protrusion 204E 5th protrusion 301 Thermistor (Temperature Measuring Element) 901 Light-emitting module

Claims

1. One or more light-emitting devices, Wiring board and The wiring board is mounted on the aforementioned wiring board and comprises a connecting member that is electrically connected to an external power supply to supply power to the one or more light-emitting devices, The one or more light-emitting devices are The present invention comprises one or more first light-emitting elements and one or more second light-emitting elements, each having a first electrode and a second electrode, The aforementioned wiring board is It has a plurality of wiring sections, including a first wiring section, a second wiring section, and a third wiring section, each of which is independent in terms of electrical connection. The aforementioned connecting member is It has multiple connection terminals, including a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal, each of which is independent in terms of electrical connection. The first connection terminal and the second connection terminal are connected to the first wiring section. The third connection terminal is connected to the second wiring section, The fourth connection terminal is connected to the third wiring section, The first wiring section is connected to the light-emitting device such that it is electrically connected to the one or more first light-emitting elements and the one or more second light-emitting elements on the first electrode side. The second wiring section is connected to the light-emitting device so as to be electrically connected to the one or more first light-emitting elements on the second electrode side. The third wiring section is connected to the light-emitting device so as to be electrically connected to the one or more second light-emitting elements on the second electrode side. Light-emitting module.

2. The plurality of light-emitting elements further include one or more third light-emitting elements, The plurality of wiring sections further include a fourth wiring section, The plurality of connection terminals further include a fifth connection terminal, The fifth connection terminal is connected to the fourth wiring section, The first wiring section is connected to the light-emitting device so as to be electrically connected to the one or more third light-emitting elements on the first electrode side. The fourth wiring section is connected to the light-emitting device so as to be electrically connected to the one or more third light-emitting elements on the second electrode side. The light-emitting module according to claim 1.

3. The first light-emitting element is one of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light. The second light-emitting element is one of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light, and the light emitted by the first light-emitting element is of a different color than the light emitted by the first light-emitting element. The third light-emitting element is one of the following: a light-emitting element that emits red light, a light-emitting element that emits green light, and a light-emitting element that emits blue light, and the color of the light emitted is different from both the color of the light emitted by the first light-emitting element and the color of the light emitted by the second light-emitting element. The light-emitting module according to claim 2.

4. The one or more light-emitting devices include a first light-emitting device and a second light-emitting device. The first light-emitting device has one or more first light-emitting elements, The second light-emitting device has the one or more second light-emitting elements, The light-emitting module according to claim 1.

5. The one or more light-emitting devices include a first light-emitting device and a second light-emitting device. The first light-emitting device has one or more first light-emitting elements, The second light-emitting device has one or more second light-emitting elements and one or more third light-emitting elements. The light-emitting module according to claim 2.

6. The plurality of wiring sections further include a fifth wiring section to which the first light-emitting device and the second light-emitting device are connected. The one or more first light-emitting elements are electrically connected to the first wiring section via the fifth wiring section. The light-emitting module according to claim 4 or 5.

7. The first light-emitting device has a first wiring section connected to the second wiring section of the wiring board, and a second wiring section connected to the fifth wiring section of the wiring board. The second light-emitting device has a first wiring section connected to the first wiring section of the wiring board, a second wiring section connected to the third wiring section of the wiring board, and a third wiring section connected to the fifth wiring section of the wiring board. The light-emitting module according to claim 6.

8. The first light-emitting device comprises a first package on which the one or more first light-emitting elements are arranged. The second light-emitting device comprises a second package on which the one or more second light-emitting elements are arranged. The first package and the second package have the same external appearance. The light-emitting module according to claim 7.

9. The first package comprises a base body comprising a base portion on which the one or more first light-emitting elements are arranged, and a frame portion that surrounds the one or more first light-emitting elements arranged on the base portion in a plan view, and a lid body that is joined to the upper surface of the frame portion. The second package comprises a base comprising a base on which one or more second light-emitting elements are arranged, a frame portion that surrounds the one or more second light-emitting elements arranged on the base portion in a plan view, and a lid that is joined to the upper surface of the frame portion. The light-emitting module according to claim 8.

10. The first light-emitting device comprises a first lens member, The second light-emitting device comprises a second lens member. The light-emitting module according to claim 8.

11. The rated currents of the first, second, third, and fourth connection terminals are all the same. The light-emitting module according to claim 1.

12. The connecting member has a main body portion that has a longitudinal direction and a transverse direction in a plan view, Each of the aforementioned plurality of connection terminals has a projection that extends from the main body to the outside of the main body in the plan view. The protruding portion of the first connection terminal extends from the main body in the shorter direction, The protruding portion of the second connection terminal extends from the main body in the longitudinal direction. The light-emitting module according to claim 1.

13. The light-emitting module according to claim 12, wherein, in the connecting member, in a plan view, no other connecting terminals are provided on the outer edge portion of the main body portion between the protrusion of the first connecting terminal and the protrusion of the second connecting terminal.

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