Light-emitting device

Abstract

The present invention provides a light-emitting device that can make the brightness of an image more uniform. [Solution] The light-emitting device comprises a first light-emitting element, a second light-emitting element, and a light-shielding member. The light-shielding member has a first surface on the side of the first and second light-emitting elements, a second surface on the opposite side of the first surface, a first through-hole penetrating from the first surface to the second surface, and a second through-hole penetrating from the first surface to the second surface. The opening area of ​​the first through-hole on the second surface is larger than the opening area of ​​the first through-hole on the first surface, the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the second through-hole on the first surface, and the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the first through-hole on the second surface.

Description

Technical Field

[0001] Embodiments relate to a light-emitting device.

Background Art

[0002] A head-up display (HUD) that displays an image on the windshield of an automobile has been developed. In a HUD, it is preferable to make the brightness of the image viewed by the driver as uniform as possible.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of embodiments is to provide a light-emitting device capable of making the brightness of an image uniform.

Means for Solving the Problems

[0005] The light-emitting device according to the embodiment comprises a first light-emitting element, a second light-emitting element, and a light-shielding member. The light-shielding member has a first surface on the side of the first and second light-emitting elements, a second surface on the opposite side of the first surface, a first through-hole extending from the first surface to the second surface, and a second through-hole extending from the first surface to the second surface. The first and second through-holes are arranged along a first direction in which the first and second light-emitting elements are arranged. A virtual first straight line can be set that passes through the first light-emitting element and through the first through-hole, and a virtual second straight line can be set that passes through the second light-emitting element and through the second through-hole and intersects the first straight line. Viewed from a second direction perpendicular to the first direction and extending from the first surface to the second surface, the opening area of ​​the first through-hole on the second surface is larger than the opening area of ​​the first through-hole on the first surface, the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the second through-hole on the first surface, and the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the first through-hole on the second surface. [Effects of the Invention]

[0006] According to this embodiment, a light-emitting device can be realized that can make the brightness of an image more uniform. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic top view showing a light-emitting device according to the first embodiment. [Figure 2] This is a schematic top view showing the light-transmitting member, light-emitting element, and light-absorbing member of the light-emitting device according to the first embodiment. [Figure 3] This is a partially enlarged top view schematically showing region III in Figure 2. [Figure 4] Figure 1 is a schematic end view taken along line IV-IV. [Figure 5] This diagram schematically shows the positional relationship between the light-emitting element and the through-hole. [Figure 6] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 7] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 8] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 9] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 10] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 11] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 12] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 13] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 14] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 15] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 16] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 17] This is a schematic process end view showing a method for manufacturing a light-emitting device according to the first embodiment. [Figure 18] This figure schematically shows a HUD according to the first embodiment. [Figure 19] This diagram schematically shows the optical positional relationship of the HUD according to the first embodiment. [Figure 20] This is a schematic perspective view showing the HUD according to the first embodiment. [Figure 21] This is a schematic top view showing the light-emitting element in a first modification of the first embodiment. [Figure 22] This is a schematic top view showing the light-emitting element in a second modified example of the first embodiment. [Figure 23]It is an end view schematically showing a light-emitting device according to a third modification of the first embodiment. [Figure 24] It is an end view schematically showing a light-emitting device according to the second embodiment. [Figure 25] It is a process end view schematically showing a method of manufacturing a light-emitting device according to the second embodiment. [Figure 26] It is a view schematically showing a HUD according to the second embodiment.

Mode for Carrying Out the Invention

[0008] <First Embodiment> FIG. 1 is a top view schematically showing a light-emitting device according to the present embodiment. FIG. 2 is a top view schematically showing a light-transmissive member, a light-emitting element, and a light-absorbing member of the light-emitting device according to the present embodiment. FIG. 3 is a partially enlarged top view schematically showing region III of FIG. 2. FIG. 4 is a schematic end view taken along line IV-IV shown in FIG. 1. FIG. 5 is a view schematically showing the positional relationship between the light-emitting element and the through-hole. Note that each figure is schematic and is emphasized and simplified as appropriate. Also, even for the same components, the dimensional ratios, shapes, and positional relationships do not necessarily exactly match between the figures. The same applies to other figures described later.

[0009] As shown in FIGS. 1 to 5, the light-emitting device 1 according to the present embodiment includes a light-transmissive member 10, a light-shielding member 20, and a plurality of light-emitting elements 30. The light-shielding member 20 has a first surface 20a and a second surface 20b on the opposite side of the first surface 20a. The light-transmissive member 10 has a third surface 10a and a fourth surface 10b on the opposite side of the third surface 10a.

[0010] The light-transmitting member 10 is positioned on the first surface 20a side of the light-shielding member 20. The light-shielding member 20 is positioned on the fourth surface 10b side of the light-transmitting member 10. The multiple light-emitting elements 30 are positioned on the third surface 10a of the light-transmitting member 10. In other words, the multiple light-emitting elements 30 are positioned on the first surface 20a side of the light-shielding member 20, via the light-transmitting member 10.

[0011] For the sake of explanation, this specification adopts the XYZ Cartesian coordinate system. Two directions parallel to the first surface 20a of the light-shielding member 20 and mutually orthogonal are defined as "first direction X" and "third direction Y". The direction perpendicular to the first direction X and the third direction Y, and moving from the first surface 20a to the second surface 20b of the light-shielding member 20, is defined as "second direction Z".

[0012] Multiple light-emitting elements 30 are arranged, for example, in a matrix. In the examples shown in Figures 1 to 5, the multiple light-emitting elements 30 are arranged in a 7x7 matrix and are periodically arranged along the first direction X and the third direction Y. The multiple light-emitting elements 30 are, for example, light-emitting diodes (LEDs), and are, for example, LEDs of the same specifications. In one example, each light-emitting element 30 is provided with a chip that emits blue light and a wavelength conversion member that converts blue light into yellow light, so that the light-emitting element 30 as a whole emits white light.

[0013] The light-shielding member 20 has a plurality of through holes 40. Each through hole 40 penetrates from the first surface 20a to the second surface 20b of the light-shielding member 20. The plurality of through holes 40 are arranged, for example, in a matrix. In the example shown in Figures 1 to 5, the plurality of through holes 40 are arranged in a matrix of 7 rows and 7 columns, and are arranged along the first direction X and the third direction Y. However, the sizes of the plurality of through holes 40 are not the same, and the distance between adjacent through holes 40 is also not the same. Of the plurality of through holes 40, the through hole 40 located in the center of the light-emitting device 1 is the smallest in size, and the through holes 40 closer to the outer periphery of the light-emitting device 1 are larger in size.

[0014] In Figure 5, the light-emitting elements 30 are shown by solid lines, the through-holes 40 on the first surface 20a of the light-shielding member 20 are shown by dashed lines, and the through-holes 40 on the second surface 20b of the light-shielding member 20 are shown by dashed lines. As shown in Figure 5, the sizes of the light-emitting elements 30 are equal to each other, and their arrangement is periodic. In contrast, as described above, the sizes of the through-holes 40 are not necessarily equal to each other, and their arrangement is not periodic.

[0015] The number of light-emitting elements 30 and the number of through-holes 40 are equal. In the examples shown in Figures 1 to 5, there are 49 of each. Furthermore, the arrangement of the light-emitting elements 30 and the arrangement of the through-holes 40 correspond to each other, forming a 7x7 matrix in the examples shown in Figures 1 to 5. Therefore, there is a one-to-one correspondence between the light-emitting elements 30 and the through-holes 40. In this specification, unless otherwise specified, "multiple light-emitting elements 30" refers to all the light-emitting elements 30 included in the light-emitting device 1, and "multiple through-holes 40" refers to all the through-holes 40 corresponding to the multiple light-emitting elements 30. However, the light-shielding member 20 may be provided with other holes, such as screw holes used for assembling the light-emitting device 1.

[0016] The multiple light-emitting elements 30 include a first light-emitting element 31, a second light-emitting element 32, a third light-emitting element 33, and a fourth light-emitting element 34. In the example shown in Figures 1 to 5, the light-emitting element 30 located in the center of the light-emitting device 1 is designated as the first light-emitting element 31. When the multiple light-emitting elements 30 are arranged in a 7x7 matrix, the first light-emitting element 31 is located in the fourth row and fourth column. When the central axis C of the light-emitting device 1 is defined as a hypothetical straight line that passes through the center of the light-emitting device 1 and extends in the second direction Z when viewed from the second direction Z, the central axis C passes through the center of the first light-emitting element 31. However, if there are no light-emitting elements 30 that pass through the central axis C, the light-emitting element 30 closest to the center of the arrangement of the multiple light-emitting elements 30 is designated as the first light-emitting element 31.

[0017] The second light-emitting element 32 is located on the first direction X side of the first light-emitting element 31 and is positioned at the outermost periphery of the plurality of light-emitting elements 30. The third light-emitting element 33 is positioned between the first light-emitting element 31 and the second light-emitting element 32. Therefore, the first light-emitting element 31, the third light-emitting element 33, and the second light-emitting element 32 are arranged in this order along the first direction X. The fourth light-emitting element 34 is located on the third direction Y side of the first light-emitting element 31 and is positioned at the outermost periphery of the plurality of light-emitting elements 30.

[0018] Of the multiple through holes 40 provided in the light-shielding member 20, the through holes 40 corresponding to the first light-emitting elements 31 to the fourth light-emitting elements 34 described above are designated as the first through hole 41 to the fourth through hole 44, respectively. That is, of the multiple through holes 40 arranged in a matrix, the through hole 40 located in the center is designated as the first through hole 41, and the through hole 40 located on the first direction X side of the first through hole 41 and on the outermost periphery of the multiple through holes 40 is designated as the second through hole 42. The third through hole 43 is located between the first through hole 41 and the second through hole 42. The through hole 40 located on the third direction Y side of the first through hole 41 and on the outermost periphery of the multiple through holes 40 is designated as the fourth through hole 44. For example, the central axis of the first through hole 41 coincides with the central axis C of the light-emitting device 1.

[0019] When viewed from the second direction Z, the region where the multiple through holes 40 are located is wider than the region where the multiple light-emitting elements 30 are located. Therefore, a through hole 40 corresponding to the second direction Z side of a certain light-emitting element 30 may or may not be located. For example, when viewed from the second direction Z, the area of ​​the region where the light-shielding member 20 overlaps with the second light-emitting element 32 is larger than the area of ​​the region where the light-shielding member 20 overlaps with the first light-emitting element 31. Also, when viewed from the second direction Z, the area of ​​the region where the light-shielding member 20 overlaps with the third light-emitting element 33 is smaller than the area where the light-shielding member 20 overlaps with the second light-emitting element 32, and larger than the area where the light-shielding member 20 overlaps with the first light-emitting element 31. For example, when viewed from the second direction Z, the entire first light-emitting element 31 may not overlap with the light-shielding member 20, while the entire second light-emitting element 32 may overlap with the light-shielding member 20.

[0020] Viewed from the second direction Z, with respect to each through-hole 40, the opening area on the second surface 20b of the light-shielding member 20 is larger than the opening area on the first surface 20a of the light-shielding member 20. For example, viewed from the second direction Z, the opening area of ​​the first through-hole 41 on the second surface 20b is larger than the opening area of ​​the first through-hole 41 on the first surface 20a, the opening area of ​​the second through-hole 42 on the second surface 20b is larger than the opening area of ​​the second through-hole 42 on the first surface 20a, the opening area of ​​the third through-hole 43 on the second surface 20b is larger than the opening area of ​​the third through-hole 43 on the first surface 20a, and the opening area of ​​the fourth through-hole 44 on the second surface 20b is larger than the opening area of ​​the fourth through-hole 44 on the first surface 20a.

[0021] Furthermore, the opening area of ​​each through-hole 40 on the second surface 20b of the light-shielding member 20 is larger for through-holes 40 located on the outer periphery side of the light-emitting device. For example, when viewed from the second direction Z, the opening area of ​​the second through-hole 42 on the second surface 20b is larger than the opening area of ​​the first through-hole 41 on the second surface 20b, the opening area of ​​the third through-hole 43 on the second surface 20b is smaller than the opening area of ​​the second through-hole 42 on the second surface 20b, and larger than the opening area of ​​the first through-hole 41 on the second surface 20b.

[0022] Furthermore, with the exception of the first through-hole 41 located in the center of the light-emitting device 1, the center of the through-hole 40 on the second surface 20b of the light-shielding member 20 is located closer to the outer periphery of the light-emitting device 1 than the center of the through-hole 40 on the first surface 20a of the light-shielding member 20. Therefore, the distance between the centers of the two through-holes 40 corresponding to any two light-emitting elements 30 is greater than the distance between the centers of any two light-emitting elements 30. For example, the distance D40 between the center of the first through-hole 41 and the center of the second through-hole 42 on the second surface 20b of the light-shielding member 20 is greater than the distance D30 between the center of the first light-emitting element 31 and the center of the second light-emitting element 32 in the first direction X. Note that the center of a light-emitting element refers to the geometric centroid of the light-emitting element when viewed from the second direction Z. For example, the center of the second light-emitting element 32 refers to the geometric centroid of the second light-emitting element 32 when viewed from the second direction Z. Also, the center of a through-hole refers to the geometric centroid of the opening of the through-hole when viewed from the second direction Z. For example, the center of the first through-hole 41 refers to the geometric centroid of the opening of the first through-hole 41 when viewed from the second direction Z.

[0023] Furthermore, it is preferable that a virtual straight line can be set for a plurality of light-emitting elements 30 and their corresponding through-holes 40, passing through any of the light-emitting elements 30 and through the through-holes 40 corresponding to that light-emitting element 30, and that a single point P can be set where these plurality of virtual straight lines intersect. That is, a virtual first straight line L1 can be set passing through the first light-emitting element 31 and through the first through-hole 41, a virtual second straight line L2 can be set passing through the second light-emitting element 32 and through the second through-hole 42, a virtual third straight line L3 can be set passing through the third light-emitting element 33 and through the third through-hole 43, and a virtual fourth straight line L4 can be set passing through the fourth light-emitting element 34 and through the fourth through-hole 44. Furthermore, it is preferable that a point P can be set where the first straight line L1, the second straight line L2, the third straight line L3, and the fourth straight line L4 intersect. Note that the first straight line L1 may coincide with the central axis C.

[0024] The light-shielding member 20 has, in order from the light-transmitting member 10 side, a first layer 21 and a second layer 22. That is, the first layer 21 is located in the second direction Z between the first light-emitting element 31 and the second layer 22, and between the second light-emitting element 32 and the second layer 22. With respect to the peak wavelength of light emitted from the first light-emitting element 31, it is preferable that the reflectance of the first layer 21 is higher than that of the second layer 22. For example, the first layer 21 is made of white resin and the second layer 22 is made of black resin. Thus, it is preferable that the light-shielding member 20 has a laminated structure of two or more layers.

[0025] As shown in Figure 4, the light-shielding member 20 may have a laminated structure of three or more layers. For example, if a third layer is provided between the first layer 21 and the second layer 22, it is preferable that the reflectance of the third layer is lower than that of the first layer 21 and higher than that of the second layer 22 with respect to the peak wavelength of light emitted from the first light-emitting element 31.

[0026] The light-emitting device 1 may further include a plurality of light-absorbing members 50, a reflective member 60, and a plurality of wires 70.

[0027] Multiple light-absorbing members 50 are arranged on the third surface 10a of the light-transmitting member 10 and are separated for each light-emitting element 30, i.e., for each through-hole 40. Each light-absorbing member 50 is located within each through-hole 40 when viewed from the second direction Z. For example, among the multiple light-absorbing members 50, the first light-absorbing member 51 corresponding to the first light-emitting element 31 is located to the side of the first light-emitting element 31 and is located within the first through-hole 41 when viewed from the second direction Z. Also, among the multiple light-absorbing members 50, the second light-absorbing member 52 corresponding to the second light-emitting element 32 is located to the side of the second light-emitting element 32 and is located within the second through-hole 42 when viewed from the second direction Z. In this specification, it is sufficient that at least a portion of the light-absorbing member is located within the through-hole when viewed from the second direction Z.

[0028] Because the sizes of the multiple through holes 40 are not uniform, the sizes of the multiple light-absorbing members 50 are also not uniform, with the light-absorbing members 50 located on the outer periphery side of the light-emitting device being larger. For example, the length of the second light-absorbing member 52 in the first direction X is longer than the length of the first light-absorbing member 51 in the first direction X. Therefore, the positional relationship between the corresponding light-emitting element 30 and the light-absorbing member 50 is not uniform, and the displacement from the corresponding light-emitting element 30 is larger for the light-absorbing member 50 located on the outer periphery side of the light-emitting device. For example, when viewed from the second direction Z, the first light-emitting element 31 is located inside the first light-absorbing member 51 and is surrounded by the first light-absorbing member 51. When viewed from the second direction Z, the second light-emitting element 32 is located outside the second light-absorbing member 52 and is away from the second light-absorbing member 52. When viewed from the second direction Z, the second light-absorbing member 52 is located on the outer periphery side of the light-emitting device than the second light-emitting element 32. When viewed from the second direction Z, a part of the third light-emitting element 33 is facing the second light-absorbing member 52.

[0029] With respect to the peak wavelength of light emitted from the light-emitting element 30, the absorption rate of the light-absorbing member 50 is 60% or more. For example, with respect to the peak wavelength of light emitted from the first light-emitting element 31, the absorption rates of the first light-absorbing member 51 and the second light-absorbing member 52 are 60% or more.

[0030] The reflective member 60 is positioned on the third surface 10a of the translucent member 10 and covers the sides of the multiple light-emitting elements 30 and the multiple light-absorbing elements 50. For example, the reflective member 60 covers the sides of the first light-emitting element 31 and the second light-emitting element 32. The electrodes of each light-emitting element 30 are exposed on the side of the reflective member 60 opposite to the translucent member 10. In the first direction X, a portion of the reflective member 60 is positioned between the second light-emitting element 32 and the second light-absorbing element 52. The reflective member 60 is made of, for example, a white resin. The portion of the reflective member 60 that is in contact with the translucent member 10 may be a light-shielding portion. The light-shielding portion is made of, for example, a black resin.

[0031] Multiple wirings 70 are arranged on the side of the reflective member 60 opposite to the translucent member 10. Multiple wirings 70 are provided for each pair of electrodes of multiple light-emitting elements 30 and are electrically connected to each electrode of each light-emitting element 30.

[0032] Next, a method for manufacturing the light-emitting device according to this embodiment will be described. Figures 6 to 17 are schematic process end views illustrating the manufacturing method of the light-emitting device according to this embodiment. Note that in Figures 6 to 17, the orientation of the illustrations is reversed compared to Figure 4.

[0033] First, a translucent member 10 is prepared as shown in Figure 6. The translucent member 10 is, for example, a glass substrate. Alternatively, a translucent ceramic substrate may be used as the translucent member 10. A plurality of light-emitting elements 30 are arranged on the third surface 10a of the translucent member 10. The plurality of light-emitting elements 30 may be arranged on the third surface 10a of the translucent member 10 via an adhesive member. The adhesive member is, for example, made of a translucent resin. The plurality of light-emitting elements 30 are spaced apart from each other and arranged, for example, in a matrix. A negative-type first photoresist layer 201 is placed on the fourth surface 10b of the translucent member 10. The negative-type first photoresist layer 201 may be placed over the entire surface of the fourth surface 10b of the translucent member 10. The first photoresist layer 201 is, for example, white. The photoresist can be placed by known methods such as coating.

[0034] Next, as shown in Figure 7, a single point light source 301 is placed on the third surface 10a side of the translucent member 10, away from the translucent member 10 and the multiple light-emitting elements 30, and is turned on. A portion of the light emitted from the point light source 301 travels in the second direction Z while moving away from the point light source 301 in the first direction X. On the third surface 10a of the translucent member 10, the area struck by the light emitted from the point light source 301 is wider than the area where the multiple light-emitting elements 30 are arranged. The position of the point light source 301 corresponds to the position of point P described above. A portion of the light emitted from the point light source 301 is blocked by the light-emitting elements 30. For example, a portion of the light emitted from the point light source 301 can be blocked by the metal layer and / or electrodes included in the light-emitting elements 30. The other portion of the light emitted from the point light source 301 passes around or between the light-emitting elements 30, passes through the translucent member 10, and is incident on the first photoresist layer 201. As a result, the exposed portion of the negative-type first photoresist layer 201 becomes insoluble in the developer. If a portion of the first photoresist layer 201 exposed by light emitted from the point light source 301 becomes insoluble, the emission peak wavelength of the light emitted from the point light source 301 is not particularly limited.

[0035] Next, as shown in Figure 8, the first photoresist layer 201 is developed. This leaves the insoluble exposed areas of the first photoresist layer 201, while the unexposed areas are removed. As a result, multiple through-holes 201h corresponding to the light-emitting elements 30 are formed in the first photoresist layer 201. When viewed from the second direction Z, the size of each through-hole 201h is larger than the size of the corresponding light-emitting element 30, and the region where multiple through-holes 201h are located is larger than the region where multiple light-emitting elements 30 are located.

[0036] Next, as shown in Figure 9, a negative-type second photoresist layer 202 is placed on the third surface 10a of the light-transmitting member 10 so as to cover the light-emitting element 30. The second photoresist layer 202 has an absorption rate of 60% or more with respect to the peak wavelength of light emitted from the light-emitting element 30. The second photoresist layer 202 is, for example, black.

[0037] Next, parallel light traveling parallel to the second direction Z is irradiated from the fourth surface 10b side of the translucent member 10. A portion of the parallel light is blocked by the first photoresist layer 201. The other portion of the parallel light passes through the through-holes 201h of the first photoresist layer 201, penetrates the translucent member 10, and reaches the second photoresist layer 202. As a result, the exposed portion of the negative-type second photoresist layer 202 becomes insoluble in the developer.

[0038] Next, as shown in Figure 10, the second photoresist layer 202 is developed. This leaves the insoluble exposed areas of the second photoresist layer 202, while the unexposed areas are removed. As a result, multiple light-absorbing members 50 are formed from the second photoresist layer 202. The multiple light-absorbing members 50 correspond to the multiple through-holes 201h of the first photoresist layer 201, and therefore correspond to the multiple light-emitting elements 30, however, the positional relationship between the corresponding light-absorbing members 50 and the light-emitting elements 30 is not uniform. Note that the portion of the second photoresist layer 202 placed on the light-emitting elements 30 is an unexposed area and is therefore removed.

[0039] Next, as shown in Figure 11, a reflective member 60 is formed on the third surface 10a of the translucent member 10 so as to cover the light-emitting element 30. The reflective member 60 is formed from, for example, a white resin. The reflective member 60 can be formed by known methods such as coating. The reflective member 60 is in contact with the translucent member 10 between the light-emitting element 30 and the light-absorbing member 50. Next, the surface of the reflective member 60 is removed by grinding or the like to expose the electrodes of each light-emitting element 30.

[0040] Next, as shown in Figure 12, wiring 70 is formed on the surface of the reflective member 60 and electrically connected to each electrode of each light-emitting element 30. The wiring 70 can be formed by known methods such as sputtering, vapor deposition, or atomic layer deposition. Alternatively, a portion of the wiring 70 may be removed by irradiation with laser light or the like.

[0041] Next, as shown in Figure 13, a positive-type third photoresist layer 203 is placed on the fourth surface 10b of the translucent member 10 so as to cover the first photoresist layer 201. The third photoresist layer 203 is also placed inside the through-hole 201h of the first photoresist layer 201 and is in contact with the translucent member 10 inside the through-hole 201h. With respect to the peak wavelength of light emitted from the light-emitting element 30, it is preferable that the reflectance of the third photoresist layer 203 is lower than that of the first photoresist layer 201.

[0042] Next, as shown in Figure 14, power is supplied to the light-emitting elements 30 via the wiring 70, causing the multiple light-emitting elements 30 to emit light. The multiple light-emitting elements 30 may be lit simultaneously or individually. Also, some of the multiple light-emitting elements 30 may be lit simultaneously. A portion of the light emitted from the light-emitting elements 30 travels in a second direction Z while moving away from the light-emitting elements 30 in a first direction X. On the fourth surface 10b of the light-transmitting member 10, the area illuminated by light emitted from each of the multiple light-emitting elements 30 is wider than the area where the through holes corresponding to each of the multiple light-emitting elements 30 are located. For example, on the fourth surface 10b of the light-transmitting member 10, the area illuminated by light emitted from the first light-emitting element 31 is wider than the area where the first through holes 41 corresponding to each of the multiple light-emitting elements 30 are located.

[0043] A portion of the light emitted from the light-emitting element 30 passes through the light-transmitting member 10, and a portion of it passes through the through-hole 201h of the first photoresist layer 201 to reach the third photoresist layer 203. As a result, the exposed portion of the positive-type third photoresist layer 203 becomes soluble in the developer. After that, the light-emitting element 30 is turned off. Furthermore, within the region where multiple light-emitting elements 30 are arranged, the distance between adjacent light-emitting elements 30 is not particularly limited, but it is preferable to set the distance between adjacent light-emitting elements 30 so that light emitted from one adjacent light-emitting element 30 is less likely to hit the through-hole corresponding to the other adjacent light-emitting element 30.

[0044] Next, as shown in Figure 15, the third photoresist layer 203 is developed. This removes the soluble exposed areas of the third photoresist layer 203, leaving the unexposed areas. As a result, multiple through-holes 203h are formed in the third photoresist layer 203. Each through-hole 203h communicates with each through-hole 201h of the first photoresist layer 201.

[0045] Thereafter, the placement of the positive-type photoresist layer, exposure of the photoresist layer by the light-emitting element 30, and development are repeated as many times as necessary. For example, as shown in Figure 16, a positive-type fourth photoresist layer 204 is placed on the third photoresist layer 203 by known methods such as coating. The fourth photoresist layer 204 is also placed in the through holes 203h and 201h. Next, multiple light-emitting elements 30 are turned on. This causes the exposed areas of the positive-type fourth photoresist layer 204 to become soluble in the developer. After that, the light-emitting elements 30 are turned off.

[0046] Next, as shown in Figure 17, the fourth photoresist layer 204 is developed. This removes the soluble exposed areas of the fourth photoresist layer 204, leaving the unexposed areas. As a result, multiple through-holes 204h communicating with through-holes 201h and 203h are formed in the fourth photoresist layer 204.

[0047] In this way, the light-shielding member 20 is formed. The first photoresist layer 201 becomes the first layer 21 of the light-shielding member 20, the third photoresist layer 203 and the fourth photoresist layer 204 become the second layer 22 of the light-shielding member 20, and the interconnected through holes 201h, 203h, and 204h become the through holes 40. Thus, the light-emitting device 1 according to this embodiment is manufactured.

[0048] In this embodiment, an example is shown in which a light-shielding member 20 is formed by stacking a negative-type first photoresist layer 201 and positive-type third photoresist layers 203 and fourth photoresist layers 204. However, two or more negative-type photoresist layers may be stacked, or one or three or more positive-type photoresist layers may be stacked. The negative-type photoresist layers are exposed by a point light source 301 located outside the light-emitting device, and the positive-type photoresists are exposed by a light-emitting element 30.

[0049] Furthermore, the light-emitting device may include a translucent covering member that overlaps with the through-hole 40 of the light-shielding member 20 when viewed from the second direction Z. This makes it easier to reduce the entry of foreign matter such as dust into the through-hole 40 of the light-shielding member 20. It is preferable that the covering member is in contact with the inner surface that defines the through-hole 40 of the light-shielding member 20. This makes it easier to further reduce the entry of foreign matter such as dust into the through-hole 40. It is preferable that the covering member is in contact with the second surface 20b of the light-shielding member 20 and the inner surface that defines the through-hole 40 of the light-shielding member 20. This improves the adhesion between the covering member and the light-shielding member 20. This makes it easier to reduce the peeling of the covering member from the light-shielding member 20.

[0050] Next, the operation of the light-emitting device 1 according to this embodiment will be described. Figure 18 is a schematic diagram showing a head-up display (HUD) according to this embodiment. Figure 19 is a schematic diagram showing the optical positional relationship of the HUD according to this embodiment. Figure 20 is a schematic perspective view showing the HUD according to this embodiment. As shown in Figures 18 to 20, the HUD 101 according to this embodiment comprises a light-emitting device 1, a liquid crystal panel 110, and an optical system 120 having positive refractive power. The HUD 101 is mounted, for example, on a vehicle. The vehicle is equipped with a windshield 150.

[0051] In Figure 19, an example of the intensity distribution of light emitted from each through-hole of the light-emitting device 1 is shown by arrows within circles. Each arrow within a circle indicates the direction of the light, and the longer the arrow, the higher the light intensity. In Figures 18 and 19, the optical system 120 with positive refractive power is represented by a convex lens shape, but the specific configuration is not particularly limited, and for example, the optical system 120 may be composed of multiple lenses or concave mirrors. For example, as shown in Figure 20, the optical system 120 may include concave mirrors 121 and 122.

[0052] As shown in Figure 4, power is supplied to the multiple light-emitting elements 30 via the wiring 70, causing the multiple light-emitting elements 30 to light up. Light emitted from each light-emitting element 30 enters the light-transmitting member 10 from the third surface 10a and passes through the light-transmitting member 10. At this time, a portion of the light emitted from the fourth surface 10b of the light-transmitting member 10 is reflected by the first layer 21 of the light-shielding member 20 and enters the light-transmitting member 10 again, and a portion of this light is emitted from the fourth surface 10b, reflected by the reflective member 60 and enters the light-transmitting member 10 again.

[0053] In this way, the light emitted from each light-emitting element 30 spreads within the light-transmitting member 10 in a direction intersecting the second direction Z, and is mainly emitted to the outside of the light-emitting device 1 through the corresponding through-holes 40. For example, the light emitted from the first light-emitting element 31 is mainly emitted to the outside of the light-emitting device 1 through the first through-hole 41, and the light emitted from the second light-emitting element 32 is mainly emitted to the outside of the light-emitting device 1 through the second through-hole 42.

[0054] As shown in Figures 18 to 20, a portion of the light emitted from each through-hole 40 of the light-emitting device 1 passes through the liquid crystal panel 110, adding an image, is focused by the optical system 120 with positive refractive power, reflected by the windshield 150, and reaches the observer's eye box 190. For example, in the example shown in Figure 20, the light that has passed through the liquid crystal panel 110 is reflected by the concave mirror 121, then by the concave mirror 122, and reaches the windshield 150. Since the windshield 150 is a light-transmitting material, the observer can see a virtual image 160 on the other side of the windshield 150 that corresponds to the image displayed on the liquid crystal panel 110. Note that the virtual image 160 does not actually exist; the observer simply perceives an image corresponding to the image displayed on the liquid crystal panel 110 at the position of the virtual image 160. The observer is, for example, the driver of a vehicle equipped with a HUD 101.

[0055] Next, the effects of this embodiment will be described. In the light-emitting device 1 according to this embodiment, with the exception of the first through-hole 41 located in the central part of the light-emitting device 1, the position of the center of the through-hole 40 on the second surface 20b of the light-shielding member 20 is located on the outer periphery side of the light-emitting device 1 than the center of the light-emitting element 30 corresponding to the through-hole 40. As a result, the distance D40 between the center of the first through-hole 41 and the center of the second through-hole 42 on the second surface 20b of the light-shielding member 20 is greater than the distance D30 between the center of the first light-emitting element 31 and the center of the second light-emitting element 32 in the first direction X.

[0056] Because the center of the through-hole 40 on the second surface 20b of the light-shielding member 20 is located on the outer periphery side of the light-emitting device 1 than the center of the light-emitting element 30 corresponding to the through-hole 40, as shown in Figures 4 and 19, the light emitted from the light-emitting element 30 can be tilted toward the outer periphery of the light-emitting device 1, that is, toward the direction away from the central axis C. For example, the intensity distribution of light emitted from the first through-hole 41 located in the center of the light-emitting device 1 is strongest in the second direction Z, and becomes weaker as the angle with respect to the second direction Z increases. On the other hand, the intensity distribution of light emitted from the second through-hole 42 located on the outer periphery side of the light-emitting device 1 is strongest in the direction tilted toward the outer periphery of the light-emitting device 1 with respect to the second direction Z.

[0057] Furthermore, in the light-emitting device 1, the through-holes 40 located on the outer periphery of the light-emitting device 1 have larger opening areas. For example, when viewed from the second direction Z, the opening area of ​​the second through-hole 42 on the second surface 20b of the light-shielding member 20 is larger than the opening area of ​​the first through-hole 41 on the second surface 20b. This allows the decrease in light intensity caused by the distance between the center of the through-hole 40 and the center of the light-emitting element 30 when viewed from the second direction Z to be compensated for by increasing the opening area.

[0058] Then, of the light emitted from the first light-emitting element 31 located in the center of the light-emitting device 1, the portion emitted in the second direction Z passes through the optical system 120 with positive refractive power and reaches the observer's eye box 190. Also, of the light emitted from the second light-emitting element 32 located on the outer periphery of the light-emitting device 1, the portion emitted in a direction inclined toward the outer periphery of the light-emitting device 1 with respect to the second direction Z is focused by the optical system 120 with positive refractive power and reaches the observer's eye box 190. For the light emitted from the other light-emitting elements 30, the portion emitted in the direction of greatest intensity or a nearby direction reaches the observer's eye box 190. As a result, the brightness of the image appears more uniform to the observer. Thus, the light-emitting device 1 according to this embodiment, including the optical system 120 with positive refractive power, can make the brightness of the image more uniform in the HUD 101. Furthermore, in the HUD 101 including the light-emitting device 1 and optical system 120 according to this embodiment, the brightness of the image is made more uniform, so that even if the position of the observer's eye box 190 changes, the brightness of the image as seen by the observer can be made more uniform.

[0059] Furthermore, in this embodiment, when viewed from the second direction Z, the area of ​​the region where the light-shielding member 20 overlaps with the second light-emitting element 32 is larger than the area of ​​the region where the light-shielding member 20 overlaps with the first light-emitting element 31. For example, when viewed from the second direction Z, the entire second light-emitting element 32 overlaps with the light-shielding member 20. This makes it easier to spread the light emitted from the second light-emitting element 32 towards the first direction X, that is, towards the outer periphery of the light-emitting device 1.

[0060] Furthermore, in this embodiment, with respect to the peak wavelength of light emitted from the light-emitting element 30, the reflectivity of the first layer 21 of the light-shielding member 20 is higher than that of the second layer 22. This allows for efficient reflection of light that has passed through the light-transmitting member 10 and reached the first layer 21, thereby increasing the light extraction efficiency. In addition, since the reflection of ambient light by the second layer 22 is reduced, the contrast between when the light-emitting element is lit and when it is not lit can be improved. The portion constituting the inner surface of the through-hole 40 in the first layer 21 may be blackened by methods such as laser irradiation. This further improves visibility.

[0061] Furthermore, in this embodiment, a reflective member 60 is provided so as to cover the light-emitting element 30. This improves the light extraction efficiency.

[0062] Furthermore, in this embodiment, a light-absorbing member 50 is provided at a position that overlaps with the through-hole 40 when viewed from the second direction Z. This reduces the reflection of ambient light incident through the through-hole 40 by the reflective member 60.

[0063] Furthermore, in this embodiment, a point light source 301 is used as the light source, and multiple light-emitting elements 30 are used as masks to expose the first photoresist layer 201. The light-emitting elements 30 are also lit to expose the third photoresist layer 203 and the fourth photoresist layer 204. This allows the first photoresist layer 201, the third photoresist layer 203, and the fourth photoresist layer 204 to be patterned in a self-aligned manner. As a result, the misalignment between the light-emitting elements 30 and the through-holes 40 can be reduced.

[0064] In this embodiment, the multiple light-emitting elements 30 may be controlled independently. Local dimming can be achieved by coordinating the multiple light-emitting elements 30 with the liquid crystal panel 110 in accordance with the image displayed by the liquid crystal panel 110.

[0065] Furthermore, although this embodiment shows an example in which multiple light-emitting elements 30 are of the same standard and are arranged periodically, it is not limited to this. The light-emitting elements 30 arranged on the outer periphery of the light-emitting device 1 may be brighter than the light-emitting elements 30 arranged in the center of the light-emitting device 1, and the arrangement density of the light-emitting elements 30 located on the outer periphery of the light-emitting device 1 may be higher than the arrangement density of the light-emitting elements 30 in the center of the light-emitting device 1. This reduces the darkening of the outer edges of the image due to the displacement of the through-holes 40 relative to the light-emitting elements 30.

[0066] Furthermore, although this embodiment shows an example in which each light-emitting element 30 includes a chip and a wavelength conversion member, it is not limited to this. For example, each light-emitting element 30 does not need to include a wavelength conversion member. In this case, the color of the light emitted from the chip becomes the color of the light emitted from the light-emitting device. Alternatively, each light-emitting element 30 may not include a wavelength conversion member, and a wavelength conversion member may be placed between each light-emitting element 30 and the light-transmitting member 10. Furthermore, one wavelength conversion member may be placed between multiple light-emitting elements 30 and one light-transmitting member 10.

[0067] <First variation of the first embodiment> Figure 21 is a schematic top view showing the light-emitting element in this modified example. As shown in Figure 21, in the light-emitting device according to this modified example, each light-emitting element 30 is provided with three chips 35R, 35G, and 35B. Chip 35R emits red light. Chip 35G emits green light. Chip 35B emits blue light.

[0068] This ensures that the light emitted from the light-emitting device contains red, green, and blue components. As a result, the color rendering of the image displayed by the HUD is improved. The configuration, manufacturing method, operation, and effects of this modified example are the same as those of the first embodiment.

[0069] <Second variation of the first embodiment> Figure 22 is a schematic top view showing the light-emitting element in this modified example. As shown in Figure 22, in the light-emitting device according to this modified example, each light-emitting element 30 is provided with four chips 35R, 35G1, 35G2, and 35B. Chip 35R emits red light. Chips 35G1 and 35G2 emit green light. Chip 35B emits blue light.

[0070] This makes it possible to increase the green component in the light emitted from the light-emitting device. The configuration, manufacturing method, operation, and effects of this modified example are the same as those of the first modified example of the first embodiment.

[0071] <Third Modification of the First Embodiment> Figure 23 is a schematic end view showing the light-emitting device according to this modified example. As shown in Figure 23, in the light-emitting device 1a according to this modified example, the light-transmitting member 10 includes grooves 11 located on the third surface 10a. The grooves 11 in this embodiment are lattice-shaped and positioned to partition each light-emitting element 30 when viewed from the second direction Z.

[0072] According to this modified example, crosstalk between the light-emitting elements 30 is reduced. As a result, for example, the accuracy of local dimming is improved. The configuration, manufacturing method, operation, and effects of this modified example are the same as those of the first embodiment.

[0073] <Second Embodiment> Figure 24 is a schematic end view showing the light-emitting device according to this embodiment. Note that in Figure 24, the light-absorbing member 50 and the wiring 70 are omitted from the illustration.

[0074] As shown in Figure 24, the light-emitting device 2 according to this embodiment differs from the light-emitting device 1 according to the first embodiment in the positional relationship between the through-holes 40 of the light-shielding member 20 and the light-emitting element 30. Specifically, the area on the first surface 20a of the light-shielding member 20 where the multiple through-holes 40 are located is wider than the area on the second surface 20b of the light-shielding member 20 where the multiple through-holes 40 are located. Also, the area on the third surface 10a of the light-transmitting member 10 where the multiple light-emitting elements 30 are located is wider than the area on the second surface 20b of the light-shielding member 20 where the multiple through-holes 40 are located.

[0075] Therefore, the distance D40 between the center of the first through hole 41 and the center of the second through hole 42 on the second surface 20b of the light-shielding member 20 is smaller than the distance D30 between the center of the first light-emitting element 31 and the center of the second light-emitting element 32. This relationship holds true for any two light-emitting elements 30 and their corresponding two through holes 40.

[0076] A method for manufacturing the light-emitting device 2 according to this embodiment will be described. Figure 25 is a schematic end view of the manufacturing method of the light-emitting device according to this embodiment. In this embodiment, the manufacturing process of the light-emitting device 1 described in the first embodiment is replaced with the process shown in Figure 7, and the process shown in Figure 25 is performed instead.

[0077] Specifically, as shown in Figure 6, multiple light-emitting elements 30 are arranged on the third surface 10a of the light-transmitting member 10, and a negative-type first photoresist layer 201 is placed over the entire surface of the fourth surface 10b of the light-transmitting member 10.

[0078] Next, as shown in Figure 25, a point light source 302 is placed on the third surface 10a side of the translucent member 10, away from the translucent member 10 and the multiple light-emitting elements 30. An optical system 305, including two convex lenses 303 and 304, is placed between the point light source 302 and the translucent member 10. Note that the optical system 305 is not limited to the above configuration, as long as it can focus the light emitted from the point light source 302. A portion of the light emitted from the point light source 302 travels in a second direction Z while moving away from the point light source 302 in a first direction X.

[0079] In this state, the point light source 302 is turned on. The light emitted from the point light source 301 is made into parallel light by the convex lens 303, focused by the convex lens 304, and directed toward the light-transmitting member 10. A portion of the light toward the light-transmitting member 10 is blocked by the light-emitting element 30. Another portion of the light toward the light-transmitting member 10 passes around or between the light-emitting elements 30, penetrates the light-transmitting member 10, and is incident on the first photoresist layer 201. As a result, the exposed portion of the negative-type first photoresist layer 201 becomes insoluble in the developer. The subsequent steps are the same as in the first embodiment. This completes the production of the light-emitting device 2.

[0080] Next, the operation of the light-emitting device 2 according to this embodiment will be described. Figure 26 is a schematic diagram showing the optical positional relationship of the head-up display according to this embodiment. As shown in Figure 26, the HUD 102 according to this embodiment comprises a light-emitting device 2, a liquid crystal panel 110, and an optical system 130 having positive refractive power. The refractive power of the optical system 130 is stronger than that of the optical system 120 in the first embodiment. The HUD 102 is mounted, for example, on a vehicle. The vehicle is equipped with a windshield 150.

[0081] In Figure 26, similar to Figure 19, an example of the intensity distribution of light emitted from each through-hole of the light-emitting device 2 is shown by arrows within circles. Each arrow within a circle indicates the direction of the light, with longer arrows indicating higher light intensity. In Figure 26, the optical system 130 with positive refractive power is represented by a convex lens shape, but the specific configuration is not particularly limited. For example, the optical system 130 may be composed of multiple convex lenses or concave mirrors. For example, the optical system 130 in this embodiment may include multiple concave mirrors with strong positive refractive power.

[0082] As shown in Figure 26, multiple light-emitting elements 30 are lit. The light emitted from each light-emitting element 30 spreads within the translucent member 10 in a direction intersecting the second direction Z, and is mainly emitted to the outside of the light-emitting device 2 through the corresponding through-holes 40. A portion of the light emitted from each through-hole 40 of the light-emitting device 2 is transmitted through the liquid crystal panel 110, an image is added to it, its direction of travel is changed by the optical system 130 with positive refractive power, it is reflected by the windshield 150, and reaches the observer's eye box 190. Since the windshield 150 is a translucent material, the observer can see a virtual image 160 on the other side of the windshield 150 that corresponds to the image displayed on the liquid crystal panel 110.

[0083] In the light-emitting device 2, with the exception of the through-hole 40 located in the central part of the light-emitting device 2, the center of the through-hole 40 on the second surface 20b of the light-shielding member 20 is located closer to the central part of the light-emitting device 1, i.e., closer to the central axis C, than the center of the light-emitting element 30 to which the through-hole 40 corresponds. As a result, the distance D40 between the center of the first through-hole 41 and the center of the second through-hole 42 on the second surface 20b of the light-shielding member 20 is smaller than the distance D30 between the center of the first light-emitting element 31 and the center of the second light-emitting element 32.

[0084] Therefore, the intensity distribution of light emitted from the first through-hole 41 located in the center of the light-emitting device 2 is strongest in the second direction Z, and becomes weaker in directions with a larger angle to the second direction Z. On the other hand, the intensity distribution of light emitted from the second through-hole 42 located on the outer periphery of the light-emitting device 2 is strongest in directions that are tilted with respect to the second direction Z, approaching the central axis C of the light-emitting device 2.

[0085] Then, of the light emitted from the first light-emitting element 31 located in the center of the light-emitting device 2, the portion emitted in the second direction Z passes through the optical system 130, which has positive refractive power, and reaches the observer's eye box 190. Also, of the light emitted from the second light-emitting element 32 located on the outer periphery of the light-emitting device 2, the portion emitted in a direction inclined to approach the central axis C of the light-emitting device 2 with respect to the second direction Z has its direction of travel changed by the optical system 130, which has positive refractive power, and reaches the observer's eye box 190. For the light emitted from the other light-emitting elements 30, the portion emitted in the direction of greatest intensity or a nearby direction reaches the observer's eye box 190. As a result, the brightness of the image appears more uniform to the observer.

[0086] Thus, the light-emitting device 2 according to this embodiment can make the brightness of the image more uniform in the HUD 102 which includes an optical system 130 having a high positive refractive index. The configuration, manufacturing method, operation, and effects of this embodiment other than those described above are the same as those of the first embodiment.

[0087] The embodiments and their modifications described above are examples that embody the present invention, and the present invention is not limited to these embodiments and modifications. For example, the present invention also includes the addition, deletion, or modification of some components or processes in the embodiments and modifications described above. Furthermore, the embodiments and modifications described above can be implemented in combination with each other.

[0088] The present invention includes the following embodiments.

[0089] (Note 1) First light-emitting element, The second light-emitting element, A light-shielding member having a first surface on the side of the first and second light-emitting elements, a second surface on the opposite side of the first surface, a first through-hole penetrating from the first surface to the second surface, and a second through-hole penetrating from the first surface to the second surface, wherein the first and second through-holes are arranged along a first direction in which the first and second light-emitting elements are arranged, Equipped with, A virtual first straight line passing through the first light-emitting element and through the first through-hole, and a virtual second straight line passing through the second light-emitting element and through the second through-hole and intersecting the first straight line can be set. A light-emitting device in which, when viewed from a second direction perpendicular to the first direction and extending from the first surface toward the second surface, the opening area of ​​the first through-hole on the second surface is larger than the opening area of ​​the first through-hole on the first surface, the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the second through-hole on the first surface, and the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the first through-hole on the second surface.

[0090] (Note 2) The light-emitting device according to Appendix 1, wherein the distance between the center of the first through-hole and the center of the second through-hole on the second surface is greater than the distance between the center of the first light-emitting element and the center of the second light-emitting element.

[0091] (Note 3) The light-emitting device according to Appendix 1, wherein the distance between the center of the first through-hole and the center of the second through-hole on the second surface is smaller than the distance between the center of the first light-emitting element and the center of the second light-emitting element.

[0092] (Note 4) The translucent member further comprises a third surface and a fourth surface located opposite the third surface, The light-emitting device according to any one of appendices 1 to 3, wherein the first light-emitting element and the second light-emitting element are arranged on the third surface of the light-transmitting member, and the light-shielding member is arranged on the fourth surface of the light-transmitting member.

[0093] (Note 5) The light-emitting device according to any one of the appendices 1 to 4, wherein, when viewed from the second direction, the area of ​​the region in which the light-shielding member overlaps with the second light-emitting element is greater than the area of ​​the region in which the light-shielding member overlaps with the first light-emitting element.

[0094] (Note 6) The light-emitting device according to Appendix 5, wherein, when viewed from the second direction, the entire second light-emitting element overlaps with the light-shielding member.

[0095] (Note 7) The device further comprises a third light-emitting element disposed between the first light-emitting element and the second light-emitting element, The light-shielding member is positioned between the first through-hole and the second through-hole and further has a third through-hole that penetrates from the first surface to the second surface. A virtual third line can be set that passes through the third light-emitting element and the third through-hole and intersects the first and second lines. The light-emitting device according to any one of the appendices 1 to 6, wherein, when viewed from the second direction, the opening area of ​​the third through-hole on the second surface is larger than the opening area of ​​the third through-hole on the first surface, the opening area of ​​the third through-hole on the second surface is smaller than the opening area of ​​the second through-hole on the second surface, and larger than the opening area of ​​the first through-hole on the second surface.

[0096] (Note 8) The light-emitting device according to Appendix 7, wherein, when viewed from the second direction, the area of ​​the region in which the light-shielding member overlaps with the third light-emitting element is smaller than the area of ​​the region in which the light-shielding member overlaps with the second light-emitting element, and larger than the area of ​​the region in which the light-shielding member overlaps with the first light-emitting element.

[0097] (Note 9) The light-emitting device according to Appendix 7 or 8, wherein the point where the first line, the second line, and the third line intersect can be set.

[0098] (Note 10) The light-shielding member has a first layer and a second layer, The light-emitting device according to any one of appendices 1 to 9, wherein the first layer is located between the first light-emitting element and the second layer, and between the second light-emitting element and the second layer.

[0099] (Note 11) The light-emitting device according to Appendix 10, wherein the reflectance of the first layer is higher than the reflectance of the second layer with respect to the peak wavelength of light emitted from the first light-emitting element.

[0100] (Note 12) The light-emitting device according to any one of appendices 1 to 11, further comprising reflective members covering the sides of the first light-emitting element and the sides of the second light-emitting element.

[0101] (Note 13) A first light-absorbing member located to the side of the first light-emitting element and within the first through-hole when viewed from the second direction, A second light-absorbing member located to the side of the second light-emitting element and within the second through-hole when viewed from the second direction, Furthermore, The light-emitting device according to any one of the appendices 1 to 12, wherein the absorption rates of the first light-absorbing member and the second light-absorbing member are 60% or more with respect to the peak wavelength of light emitted from the first light-emitting element.

[0102] (Note 14) The light-emitting device according to Appendix 13, wherein, when viewed from the second direction, the first light-emitting element is located inside the first light-absorbing member, and the second light-emitting element is located outside the second light-absorbing member.

[0103] (Note 15) The system further comprises reflective members covering the sides of the first light-emitting element and the sides of the second light-emitting element, The light-emitting device according to Appendix 14, wherein a portion of the reflective member is disposed between the second light-emitting element and the second light-absorbing member in the first direction.

[0104] (Note 16) The light-emitting device according to any one of appendices 13 to 15, wherein the length of the second light-absorbing member in the first direction is longer than the length of the first light-absorbing member in the first direction.

[0105] (Note 17) Further comprising a fourth light-emitting element, The light-shielding member further has a fourth through-hole that penetrates from the first surface to the second surface, The first light-emitting element and the fourth light-emitting element are arranged along a third direction that intersects with respect to the first direction and is perpendicular to the second direction. The first through-hole and the fourth through-hole are arranged along the third direction, A light-emitting device according to any one of appendices 1 to 16, which is capable of setting a virtual fourth straight line that passes through the fourth light-emitting element and through the fourth through-hole.

[0106] (Note 18) The light-emitting device according to Appendix 17, wherein the point where the first line, the second line, and the fourth line intersect can be set. [Industrial applicability]

[0107] The present invention can be used, for example, as a light source for a display device such as a HUD, or as a light source for an illumination device. [Explanation of Symbols]

[0108] 1, 1a, 2 Light-emitting device 10 Translucent material 10a 3rd page 10b Side 4 11 Groove 20 Light-shielding material 20a Page 1 20b 2nd side 21 1st layer 22 2nd layer 30 light-emitting elements 31 First light-emitting element 32. Second light-emitting element 33 Third light-emitting element 34. Fourth light-emitting element 35B, 35G, 35G1, 35G2, 35R chips 40 Through holes 41 First through hole 42 Second through hole 43 Third through hole 44 Fourth through hole 50 Light-absorbing material 51 First light absorbing member 52 Second light absorbing member 60 Reflective material 70 Wiring 110 LCD panel 120 Optical systems with positive refractive power 130 Optical systems with positive refractive power 150 Windshield 160 Illusion 190 iBox 201 First photoresist layer 201h Through hole 202 Second Photoresist Layer 203 Third Photoresist Layer 203h Through hole 204 Fourth photoresist layer 204h Through hole 301, 302 Point light source 303, 304 Convex Lenses 305 Optical system C center axis D30 Distance D40 distance L1 1st straight line L2, second straight line L3, third straight line L4, Line 4 Point P X, first direction Y 3rd direction Z, direction 2

Claims

1. First light-emitting element, The second light-emitting element, A light-shielding member having a first surface on the side of the first and second light-emitting elements, a second surface on the opposite side of the first surface, a first through-hole penetrating from the first surface to the second surface, and a second through-hole penetrating from the first surface to the second surface, wherein the first and second through-holes are arranged along the first direction in which the first and second light-emitting elements are arranged, Equipped with, A virtual first straight line passing through the first light-emitting element and through the first through-hole, and a virtual second straight line passing through the second light-emitting element and through the second through-hole and intersecting the first straight line can be set. A light-emitting device in which, when viewed from a second direction perpendicular to the first direction and extending from the first surface toward the second surface, the opening area of ​​the first through-hole on the second surface is larger than the opening area of ​​the first through-hole on the first surface, the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the second through-hole on the first surface, and the opening area of ​​the second through-hole on the second surface is larger than the opening area of ​​the first through-hole on the second surface.

2. The light-emitting device according to claim 1, wherein the distance between the center of the first through-hole and the center of the second through-hole on the second surface is greater than the distance between the center of the first light-emitting element and the center of the second light-emitting element.

3. The light-emitting device according to claim 1, wherein the distance between the center of the first through-hole and the center of the second through-hole on the second surface is smaller than the distance between the center of the first light-emitting element and the center of the second light-emitting element.

4. The translucent member further comprises a third surface and a fourth surface located opposite the third surface, The light-emitting device according to claim 1, wherein the first light-emitting element and the second light-emitting element are arranged on the third surface of the light-transmitting member, and the light-shielding member is arranged on the fourth surface of the light-transmitting member.

5. The light-emitting device according to claim 1, wherein, when viewed from the second direction, the area of ​​the region in which the light-shielding member overlaps with the second light-emitting element is greater than the area of ​​the region in which the light-shielding member overlaps with the first light-emitting element.

6. The light-emitting device according to claim 5, wherein, when viewed from the second direction, the entire second light-emitting element overlaps with the light-shielding member.

7. The system further comprises a third light-emitting element disposed between the first light-emitting element and the second light-emitting element, The light-shielding member is positioned between the first through-hole and the second through-hole and further has a third through-hole that penetrates from the first surface to the second surface. A virtual third line can be set that passes through the third light-emitting element and the third through-hole and intersects the first and second lines. The light-emitting device according to claim 1, wherein, when viewed from the second direction, the opening area of ​​the third through-hole on the second surface is larger than the opening area of ​​the third through-hole on the first surface, the opening area of ​​the third through-hole on the second surface is smaller than the opening area of ​​the second through-hole on the second surface, and larger than the opening area of ​​the first through-hole on the second surface.

8. The light-emitting device according to claim 7, wherein, when viewed from the second direction, the area of ​​the region in which the light-shielding member overlaps with the third light-emitting element is smaller than the area of ​​the region in which the light-shielding member overlaps with the second light-emitting element, and larger than the area of ​​the region in which the light-shielding member overlaps with the first light-emitting element.

9. The light-emitting device according to claim 7, wherein the point at which the first line, the second line, and the third line intersect can be set.

10. The light-shielding member comprises a first layer and a second layer. The light-emitting device according to claim 1, wherein the first layer is located between the first light-emitting element and the second layer, and between the second light-emitting element and the second layer.

11. The light-emitting device according to claim 10, wherein the reflectance of the first layer is higher than the reflectance of the second layer with respect to the peak wavelength of light emitted from the first light-emitting element.

12. The light-emitting device according to claim 1, further comprising reflective members covering the side surfaces of the first light-emitting element and the side surfaces of the second light-emitting element.

13. A first light-absorbing member located to the side of the first light-emitting element and within the first through-hole when viewed from the second direction, A second light-absorbing member located to the side of the second light-emitting element and within the second through-hole when viewed from the second direction, Furthermore, The light-emitting device according to claim 1, wherein the absorption rates of the first light-absorbing member and the second light-absorbing member are 60% or more with respect to the peak wavelength of light emitted from the first light-emitting element.

14. The light-emitting device according to claim 13, wherein, when viewed from the second direction, the first light-emitting element is located inside the first light-absorbing member, and the second light-emitting element is located outside the second light-absorbing member.

15. The system further comprises reflective members covering the sides of the first light-emitting element and the sides of the second light-emitting element, The light-emitting device according to claim 14, wherein a part of the reflective member is disposed between the second light-emitting element and the second light-absorbing member in the first direction.

16. The light-emitting device according to claim 13, wherein the length of the second light-absorbing member in the first direction is longer than the length of the first light-absorbing member in the first direction.

17. Further comprising a fourth light-emitting element, The light-shielding member further has a fourth through-hole that penetrates from the first surface to the second surface, The first light-emitting element and the fourth light-emitting element are arranged along a third direction that intersects with the first direction and is perpendicular to the second direction. The first through-hole and the fourth through-hole are arranged along the third direction, The light-emitting device according to claim 1, which allows for the setting of a virtual fourth straight line that passes through the fourth light-emitting element and through the fourth through-hole.

18. The light-emitting device according to claim 17, wherein the point at which the first line, the second line, and the fourth line intersect can be set.

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