JP2022014419A - Tray and packaging body - Google Patents

Abstract

To provide a tray capable of restricting a deflection of a planar light source and being stored, and a packaging body.SOLUTION: In a tray 100 including a storage part 110 capable of storing a planar light source, the planar light source comprises a plurality of light-emitting modules including first and second light-emitting modules, the first light-emitting module has 1A area and 1B area across a central part of the first light-emitting module in a first direction, the second light-emitting module has 2A area and 2B area across a central part of the second light-emitting module in a first direction, a bottom surface of the storage part has a first bottom surface and a second bottom surface of which height is smaller than that of the first bottom surface in the first direction, the first light-emitting module is arranged on the first bottom surface opposite to a lower surface of a substrate situated below the 1A area and the 1B area and the second light-emitting module adjacent the first light-emitting module is arranged on the second bottom surface opposite to the lower surface of the substrate situated below the 2A area and the 2B area.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to trays and packaging.

Light emitting devices using light emitting elements such as light emitting diodes are widely used as various light sources such as backlights and displays of liquid crystal displays. As such a light emitting device, a structure in which a plurality of light emitting elements are placed on a substrate has been proposed. For example, Patent Document 1 below discloses a light emitting device having a plurality of light guide plates on a substrate and a plurality of light emitting elements for incident light on each light guide plate.

Japanese Unexamined Patent Publication No. 2010-40192

In recent years, there has been a demand for further thinning of light emitting devices. The thinner the light emitting device, the easier it is to bend. The present disclosure provides trays and packages that can accommodate a planar light source with reduced warpage.

The tray of one aspect of the present disclosure is a tray provided with a concave accommodating portion capable of accommodating a planar light source, and the accommodating portion has a bottom surface extending in a second direction orthogonal to the first direction and the first direction. The planar light source includes a flexible substrate and a plurality of light emitting modules fixed on the substrate and including a first light emitting module and a second light emitting module in the first direction. The first light emitting module has a first A region and a first B region sandwiching a central portion of the first light emitting module in the first direction, and the second light emitting module is the second light emitting module in the first direction. It has a second A region and a second B region that sandwich the central portion of the housing, and in the first direction, the bottom surface of the housing portion sandwiches the first bottom surface and the first bottom surface, and is higher than the first bottom surface. It has a low second bottom surface, and the first bottom surface is a portion where the first light emitting module is arranged and faces the lower surface of the substrate located below the first A region and the first B region. The second bottom surface is a portion where the second light source module adjacent to the first light source module is arranged, and the substrate is located below the second A region and the second B region. It is a part facing the lower surface of the module.

According to the present disclosure, it is possible to provide a tray and a package that can be accommodated while suppressing the warp of a planar light source.

It is a schematic top view of the tray which concerns on embodiment. FIG. 3 is a schematic cross-sectional view taken along the line II-II of FIG. 1 of the tray according to the embodiment. FIG. 3 is a schematic cross-sectional view taken along the line III-III of FIG. 1 of the tray according to the embodiment. It is a schematic top view which shows the packing body which accommodates the planar light source in the tray which concerns on embodiment. It is the schematic sectional drawing which shows the bottom surface of the accommodating part enlarged. It is a schematic plan view which shows the example of the 1st bottom surface in the accommodating part. FIG. 3 is a schematic plan view showing another example of the first bottom surface in the accommodating portion. It is the schematic sectional drawing which shows the bottom surface of the accommodating part enlarged. It is a schematic top view of the tray which concerns on embodiment. FIG. 3 is a schematic cross-sectional view showing a state in which two trays of FIG. 8 are stacked. It is a schematic top view of the tray which concerns on other embodiment. It is a schematic partial sectional view which shows the planar light source which concerns on embodiment. It is a schematic plan view which shows the light emitting module which concerns on embodiment. FIG. 3 is a schematic cross-sectional view taken along the line XIII-XIII of FIG. 12 of the light emitting module according to the embodiment. FIG. 3 is a plan view schematically showing an exemplary appearance of the light emitting module shown in FIG. 12 when viewed from the side opposite to the upper surface of the light guide plate. It is a schematic plan view which shows the other example of the appearance when the light emitting module which concerns on embodiment is seen from the side opposite to the upper surface of a light guide plate. It is a schematic plan view which shows the example which added the insulating layer on the wiring layer shown in FIG. 14B. It is a schematic sectional drawing which shows an example of the light source which concerns on embodiment. It is a schematic sectional drawing which shows the planar light source which concerns on embodiment.

Hereinafter, the present invention will be described in detail with reference to the drawings. In the following description, terms indicating a specific direction or position (for example, "upper", "lower", and other terms including those terms) are used as necessary, but the use of these terms is used. The purpose is to facilitate understanding of the invention with reference to the drawings, and the meaning of these terms does not limit the technical scope of the present invention. Further, the parts having the same reference numerals appearing in a plurality of drawings indicate the same or equivalent parts or members.

Further, the embodiments shown below exemplify a light emitting module for embodying the technical idea of the present invention, and do not limit the present invention to the following. In addition, the dimensions, materials, shapes, relative arrangements, etc. of the components described below are not intended to limit the scope of the present invention to the specific description, but are exemplified. It was intended. Further, the contents described in one embodiment and the embodiment can be applied to other embodiments and the embodiments. In addition, the size and positional relationship of the members shown in the drawings may be exaggerated in order to clarify the explanation.

FIG. 1 is a schematic top view of a tray according to the present embodiment. 2 and 3 are schematic cross-sectional views of the tray according to the present embodiment. FIG. 4 is a schematic top view showing a package 1 including a tray according to the present embodiment and a planar light source housed in the tray.

The package 1 shown in FIG. 4 includes a planar light source 10 and a tray 100 for accommodating the planar light source 10.

The tray 100 is a member for accommodating the planar light source 10 and facilitating storage and transportation. As shown in FIG. 1, the tray 100 has a substantially rectangular outer shape in a top view, and includes a concave accommodating portion 110 capable of accommodating a planar light source 10. The accommodating portion 110 has a bottom surface extending in the first direction and the second direction. The first direction is orthogonal to the second direction. The tray 100 may have a plurality of accommodating portions 110.

The planar light source 10 housed in the tray 100 includes a flexible wiring board 50 and a plurality of light emitting modules 30 fixed on the wiring board 50.

The planar light source 10 has a rectangular light emitting module portion 11 that is long in the first direction in a top view, a relay terminal 12 that protrudes from one outer edge of the light emitting module portion 11 and is connected to an external power source (not shown). Has. A plurality of light emitting modules 30 are arranged in the light emitting module unit 11. As shown in FIG. 5, the plurality of light emitting modules 30 include a first light emitting module 31 and a second light emitting module 32. The first light emitting module 31 and the second light emitting module 32 are arranged adjacent to each other in the first direction. The first light emitting module 31 has a first A region 31A and a first B region 31B that sandwich the central portion of the first light emitting module 31 in the first direction. The second light emitting module 32 has a second A region 32A and a second B region 32B that sandwich the central portion of the second light emitting module 32 in the first direction.

The accommodating portion 110 of the tray 100 has a light emitting module accommodating portion 111 corresponding to each of the light emitting module portion 11 of the planar light source 10 and the relay terminal 12, and a terminal accommodating portion 112. The bottom surface 121 of the light emitting module accommodating portion 111 of the tray 100 has a first bottom surface 121A and a second bottom surface 121B. In the first direction, the second bottom surface 121B is arranged at a position sandwiching the first bottom surface 121A. The first bottom surface 121A is a portion where the first light emitting module 31 of the planar light source 10 is arranged, and is a lower surface of a wiring board 50 located below the first A region 31A and the first B region 31B of the first light emitting module. It is the opposite part. The second bottom surface 121B is a portion where the second light emitting module 32 adjacent to the first light emitting module 31 is arranged, and is a wiring board located below the second A region 32A and the second B region 32B of the second light emitting module 32. It is a portion facing the lower surface of the 50. The height of the second bottom surface 121B is lower than that of the first bottom surface 121A. By arranging the first bottom surface 121A and the second bottom surface 121B in this way, the wiring board 50 between the first light emitting module 31 and the second light emitting module 32 of the planar light source 10 bends downward and the first light emitting module. It is possible to prevent the 31 from coming into contact with the second light emitting module 32.

In the planar light source 10 shown in FIG. 4, it tends to bend up and down particularly in the first direction which is the longitudinal direction. If the lower surface side of the wiring board 50 is bent so as to be convex during transportation or storage of the planar light source 10, it is conceivable that the light emitting modules 30 may be damaged by the side surfaces of the adjacent light emitting modules 30 being pressed against each other. .. In the tray 100 shown in FIG. 1, the height of the second bottom surface 121B arranged at a position sandwiching the first bottom surface 121A in the first direction is lower than that of the first bottom surface 121A, so that the wiring board 50 of the planar light source 10 is formed. It is possible to prevent the planar light source 10 from being damaged by suppressing bending so that the lower surface side of the surface is convex.

(Tray 100)
The outer shape of the tray 100 is not particularly limited as long as the accommodating portion 110 can be arranged on the upper surface thereof. The tray 100 shown in FIG. 1 has a rectangular outer shape when viewed from above. The size of the tray 100 depends on the size of the planar light source 10 to be accommodated, but the length in the first direction in the top view is about 100 mm or more and 1000 mm or less, and the length in the second direction is about 100 mm or more and 1200 mm or less. can do. Further, the height of the tray 100 can be about 5 mm or more and 100 mm or less.

When the tray 100 is translucent, it is preferable because it can be easily confirmed that the planar light source 10 is accommodated, but the tray 100 is not limited to this. The tray 100 may have, for example, light reflectivity. The tray 100 is preferably flexible. In particular, it is preferable that the flexibility is lower than that of the planar light source 10. The material of the tray 100 is, for example, resin. Preferably, it is composed of a thermoplastic resin such as polycarbonate, polystyrene, acrylic nitrile-butadiene-styrene resin (ABS resin), polyvinyl chloride resin, polyethylene terephthalate, and polypropylene.

(Accommodation unit 110)
As shown in FIG. 2, the accommodating portion 110 includes an opening 130 on the upper surface side of the tray 100. In the tray 100 shown in FIG. 8, a plurality of accommodating portions 110 are arranged toward the second direction. The size of the accommodating portion 110 is designed so that one planar light source 10 can be accommodated therein. In the example of FIG. 1, the light emitting module accommodating portion is formed in a rectangular shape long in the first direction in the top view. As shown in FIG. 5, the depth D of the accommodating portion 110 is such that the depth D from the first bottom surface 121A of the accommodating portion 110 to the opening 130 is planar so that the planar light source 10 can be completely accommodated in the accommodating portion 110. It is larger than the height of the light source 10. The side surface of the accommodating portion may be a surface perpendicular to the upper surface. Further, the angle of the side surface may be inclined so that the width increases from the bottom surface toward the opening so that the planar light source can be easily taken out.

The dimensions of the accommodating portion 110 are designed according to the dimensions of the accommodating planar light source 10. For example, the width of the light emitting module accommodating portion 111 in the first direction can be 100 mm or more and 900 mm or less, and the width in the second direction can be 20 mm or more and 500 mm or less. Further, the width of the terminal accommodating portion 112 in the first direction can be 20 mm or more and 800 mm or less, and the width in the second direction can be 10 mm or more and 100 mm or less. The depth from the first bottom surface 121A of the accommodating portion 110 to the opening 130 can be 2 mm or more and 30 mm or less.

In the example shown in FIG. 5, the bottom surface 121 of the accommodating portion 110 is provided as a curved surface including the first bottom surface 121A and the second bottom surface 121B in the first direction. In the bottom surface 121 of the accommodating portion 110, it is preferable that the height of the first bottom surface 121A is the highest as compared with the other portions. In the first direction, the second bottom surface 121B arranged on both sides of the first bottom surface 121A becomes lower in height toward the outside. In the bottom surface 121 of the accommodating portion 110, it is preferable that there is no bottom surface having a height higher than that of the second bottom surface 121B or a surface parallel to the upper surface or the lowermost surface 100a of the tray 100 on the outside of the second bottom surface 121B. The entire bottom surface 121 of the accommodating portion 110 can be provided as a curved surface whose height decreases from the first bottom surface 121A toward the outside in the first direction. In the example shown in FIG. 5, in the first direction, the first bottom surface 121A is arranged at the center of the bottom surface 121. The position where the first bottom surface 121A is arranged is not particularly limited as long as the second bottom surface 121B can be arranged on both sides in the first direction. It is preferable that the width of the first bottom surface 121A in the first direction is wider than the width of the first A region 31A (first B region 31B) of the first light emitting module. In the example shown in FIG. 5, one first light emitting module 31 is arranged on the first bottom surface 121A, but the present invention is not limited to this. A plurality of first light emitting modules 31 may be arranged on the first bottom surface 121A. In this case, a plurality of first light emitting modules 31 can be provided at the same height.
The radius of curvature of the bottom surface in the first direction can be 10,000 mm or more and 20,000 mm or less. Further, on the bottom surface of the accommodating portion 110, the first bottom surface 121A and the second bottom surface 121B described above can be arranged also in the second direction. In this case, it is preferable that the curvature in the first direction is larger than the curvature in the second direction.

In the example shown in FIG. 6A, the first bottom surface 121A is a part of the bottom surface of the accommodating portion 110 in the second direction, and is provided substantially in the center of the light emitting module accommodating portion 111. In this example, the first bottom surface 121A and the second bottom surface 121B are arranged in the second direction. The width of the first bottom surface 121A in the second direction in a plan view is preferably wider than the width of the first light emitting module. Further, the first bottom surface 121A may be provided with a width in the second direction in a plan view wider than the width of the planar light source. As shown in FIG. 6B, the first bottom surface 121A may be provided on the entire bottom surface of the accommodating portion 110 in the second direction.

In the example shown in FIG. 7, the first bottom surface 121A and the second bottom surface 121B are provided as a plurality of flat surfaces having different heights. As shown in FIG. 7, the first bottom surface 121A and the second bottom surface 121B can be arranged so as to be separated from each other in the first direction and the direction perpendicular to the second direction.

(Recess)
The bottom surface of the accommodating portion 110 can have a recess 140. In the state where the planar light source 10 is accommodated, the planar light source 10 contacts the bottom surface 121 of the accommodating portion 110 and does not contact the bottom surface 140a of the recess 140. Here, the second bottom surface 121B described above is a surface on which the planar light source 10 is placed, whereas the bottom surface 140a of the recess 140 is a surface on which the planar light source 10 is not placed, and is the present invention. It is not included in the second bottom surface 121B in. The lower surface of the tray 100 located on the opposite side of the bottom surface 140a of the recess 140 constitutes the lowermost surface 100A of the tray 100. By providing such a recess 140, the bottom surface 121 of the accommodating portion 110 in which the planar light source 10 is arranged can be separated from the lowermost surface 100A of the tray 100, so that the impact applied to the planar light source 10 from the outside is reduced. can do. Further, for example, a stretched portion extending downward may be provided at the edge of the tray 100, and the stretched portion may form the lowermost surface of the tray 100. In this case, the recess 140 described above can be omitted.

In the example shown in FIG. 1, the opening shape of the recess 140 is rectangular. However, the opening shape of the recess 140 may be polygonal or circular. In the example shown in FIG. 1, a plurality of recesses 140 are provided in the first direction and the second direction. The plurality of recesses 140 are provided at equal intervals on the bottom surface of the accommodating portion 110. The opening width of the recess 140 in the first direction can be, for example, 10 mm or more and 200 mm or less. The opening width of the recess 140 in the second direction is preferably narrower than the width of the first bottom surface 121A. Further, it is preferably narrower than the width of the light emitting module 30. Further, the opening width of the recess 140 in the second direction can be, for example, 10 mm or more and 30 mm or less. Further, the distance between the second recesses 140 is wider than the width of each of the first A region 31A (first B region 31B) of the first light emitting module 31 and the second A region 32A (second B region 32B) of the second light emitting module 32. Is preferable.

In the example shown in FIG. 8, the tray 100 has two accommodating portions (first accommodating portion 110A and second accommodating portion 110B) arranged in the second direction. In this example, the terminal accommodating portions 112 of the two accommodating portions are connected to each other. The recess 140c arranged substantially in the center of the light emitting module accommodating portion 111 in the second direction is arranged so as to deviate in the second direction from the center line X in the second direction of the light emitting module accommodating portion 111. FIG. 9 shows a state in which two trays shown in FIG. 8 are stacked. In the recess 140, when the two trays 100 are rotated by 180 degrees and stacked, the recess 141 of the upper tray 100 and the recess 142 of the lower tray 100 are displaced from each other. By doing so, it is possible to prevent the pressure applied to the upper surface and the lower surface of the planar light source 10 by the tray 100 from being biased.

(Overhang 150)
As shown in FIG. 1, on the side surface of the accommodating portion 110, an overhanging portion 150 provided in a concave shape in a top view can be formed so that the width of the accommodating portion 110 is partially widened. It is formed as a holding position of the planar light source 10 so that the planar light source 10 can be easily accommodated in the accommodating portion 110 and taken out from the accommodating portion 110. When accommodating the planar light source 10, air can escape from the overhanging portion 150, so that the planar light source 10 can be easily accommodated.

The overhanging portion 150 is provided on the side in the second direction with respect to the rectangular light emitting module accommodating portion 111 which is long in the first direction in the top view. Since the planar light source 10 long in the first direction tends to bend in the first direction, by providing the overhanging portion 150 on the side in the second direction, the planar light source 10 can be easily taken out from the tray 100.

The shape of the overhanging portion 150 is provided in a rectangular shape when viewed from above. The shape of the overhanging portion 150 is not limited to this, and may be an arc shape, a trapezoidal shape, or the like. In the example shown in FIG. 8, the overhanging portion 150 is provided on each side of the first accommodating portion and the second accommodating portion 110B in the second direction. A plurality of overhanging portions 150 can be formed along the length direction of the accommodating portion 110.

In the tray 100 shown in FIG. 8, the second accommodating portion 110B is provided in a direction rotated by 180 degrees with respect to the first accommodating portion. By doing so, even if the tray 100 is rotated 180 degrees, the orientations of the two accommodating portions are the same, which is preferable.

In the tray 100 shown in FIG. 10, the first accommodating portion 110A and the second accommodating portion 110B are arranged so as to be arranged in the same direction in the second direction. This is preferable because the planar light sources accommodated in the first accommodating portion 110A and the second accommodating portion 110B can be taken out from the tray 100 in the same direction.

(Surface light source 10)

Next, the planar light source 10 will be described.

As shown in FIG. 11, the planar light source 10 includes a wiring board 50 and a plurality of light emitting modules 30 arranged on the wiring board 50. In one example, 128 light emitting modules are provided, and as shown in FIG. 4, 16 light emitting modules are arranged in the first direction and 8 light emitting modules are arranged in the second direction.

FIG. 12 is a plan view showing the light emitting module 30 in the present embodiment. FIG. 13 is a cross-sectional view taken along the line XIII-XIII shown in FIG.

As shown in FIGS. 12 and 13, a plurality of light emitting regions R are set in each light emitting module 30. In one example, 16 light emitting regions R are set in each light emitting module 30, and four light emitting regions R are arranged in the first direction and four light emitting regions R are arranged in the second direction.

Each light emitting module 30 includes one light guide plate 21, and each light emitting region R has one light source. Therefore, in the example shown in FIGS. 12 and 13, one light emitting module 30 is provided with one light guide plate 21 and 16 light sources 22. The distance D between the centers of the adjacent light sources 22 is preferably 1 mm or more and 10 mm or less, and is, for example, 6 mm.

In the light emitting module 30, the lower surface 21a of the light guide plate 21 is provided with a recess 21c, and the light source 22 is arranged in the recess 21c. A first translucent member 23 is arranged between the side wall of the recess 21c and the side surface of the light source 22. The light source 22 is fixed to the light guide plate 21 by the first translucent member 23.

Further, the light emitting module 30 is provided with a first light reflecting member 24 around the light source 22 on the lower surface side of the light guide plate 21. The first light-reflecting member 24 is provided below the first light-transmitting member 23 and on the side surface of the light source 22. A wiring layer 25 is provided on the lower surfaces of the light source 22 and the first light reflective member 24. The wiring layer 25 is patterned in a predetermined shape. The upper surface of the first light reflecting member 24 has a concave surface curved for each light emitting region R. The light source 22 is connected to the wiring layer 25. Further, the upper surface of the first light reflecting member 24 has a ridge line at a portion corresponding to the boundary between adjacent light emitting regions R.

Further, a recess 21d is provided in a region corresponding to a region directly above the light source 22 on the upper surface 21b of the light guide plate 21, and a light adjusting member 26 is provided in the recess 21d. The shape of the recess 21d is, for example, a conical trapezoid. The light adjusting member 26 is, for example, a resin material containing a light diffusing material, and reflects a part of the incident light and transmits the other part.

In the light emitting module 30, the light guide plate 21 can be formed as a single layer, but may be formed as a plurality of layers. Further, the light source 22 may be arranged on the first light reflecting member 24 without using the light guide plate 21.

FIG. 14A shows an example of the appearance of the light emitting module 30 shown in FIG. 12 when viewed from the lower surface side opposite to the upper surface 21b of the light guide plate 21. In FIG. 14A, the boundary between the plurality of light emitting regions R is shown by a dotted line for the sake of clarity, but it is the implementation of the present disclosure that a clear boundary is formed between the plurality of light emitting regions R. Not required in form.

In the configuration exemplified in FIG. 14A, the wiring layer 25 electrically connects the light source 22 of each light emitting region R. In this example, each light source 22 has a rectangular shape in a plan view, and a pair of portions of the wiring layer 25 connected to the positive electrode and the negative electrode of each light source 22 are in the diagonal direction of the rectangular shape of the light source 22. It is formed to stretch. In this example, eight series circuits each including two series connections of the light sources 22 arranged in 4 rows and 4 columns are connected in parallel. The electrical connection of the plurality of light sources is not limited to this example, and for example, the plurality of light sources 22 in the light emitting module 30 are divided into two or more groups, and a circuit is configured to drive in units of these groups. May be good.

FIG. 14B schematically shows another example of the appearance of the light emitting module 30B when viewed from the side opposite to the upper surface of the light guide plate. The light emitting module 30B shown in FIG. 14B includes a total of 16 light sources arranged in 4 rows and 4 columns, similarly to the light emitting module 30 described above. In this example, 16 light sources are divided into 4 groups. Each group contains four light sources arranged in two rows and two columns. Here, the wiring layer 25 constitutes a circuit in which the light source included in the light emitting module 30B is driven in units of these groups. In the example shown in FIG. 14B, a set of a positive electrode 251 and a negative electrode 252 is arranged for each group including four light sources. Here, the positive electrode 251 and the negative electrode 252 are each formed so as to sandwich a series circuit including four light emitting elements.

FIG. 14C schematically shows an example in which an insulating layer is formed on the surface of the wiring layer 25. As illustrated in FIG. 14C, by arranging the insulating layer 27 on the surface of the wiring layer 25, the wiring layer 25 can be protected from moisture, dust, and the like by the insulating layer 27. In the configuration exemplified in FIG. 14C, the insulating layer 27 has a two-layer structure including a first layer 27a on the light guide plate 21 side and a second layer 27b arranged on the surface of the first layer 27a. The first layer 27a of the insulating layer 27 has an opening 27a5 at a position overlapping the positive electrode 251 and the negative electrode 252 of the wiring layer 25. Further, the second layer 27b of the insulating layer 27 also has an opening 27b5 at a position overlapping the positive electrode 251 and the negative electrode 252 of the wiring layer 25. The second layer 27b further has an opening 27b2 at a position overlapping each light source 22.

The insulating layer 27 may be two layers as shown in FIG. 14C, or may be a single layer. Further, the insulating layer 27 may be colorless or colored (for example, blue). In the example shown in FIG. 14A, the insulating layer 27 may be arranged on the wiring layer 25. In this case as well, the insulating layer 27 may be two layers or a single layer.

The wiring board 50 is located on the lower surface side of the planar light source 10, that is, on the side opposite to the upper surface 21b of the light guide plate 21, and is connected to the wiring layer 25 of the light emitting module 30. In the configuration exemplified in FIG. 11, the wiring board 50 has an insulating base material 51, a wiring layer 52 on the insulating base material 51, a coating layer 53, a plurality of vias 54, and a protective member 55. The wiring layer 52 is located on the main surface of the insulating base material 51 on the side opposite to the light emitting module 30. The covering layer 53 covers at least a part of the wiring layer 52 with a predetermined thickness, and has a function of protecting the wiring layer 52.

FIG. 15 is a schematic cross-sectional view showing an example of the light source 22 in the present embodiment. As shown in FIG. 15, the light source 22 includes a light emitting element 41, a second light reflecting member 45, and a third light transmissive member 46. The light emitting element 41 has a semiconductor structure 42 and a pair of electrodes 43. The light emitting element 41 is arranged in the second light reflecting member 45. The third light-transmitting member 46 is arranged on the second light-reflecting member 45.

In the semiconductor structure 42, a p-type layer, a light emitting layer, and an n-type layer are laminated. The pair of electrodes 43 are arranged on the lower surface of the semiconductor structure 42, and are connected to the p-type layer and the n-type layer of the semiconductor structure 42, respectively. The pair of electrodes 43 are exposed from the lower surface of the second light reflecting member 45. The pair of electrodes 43 are connected to the wiring layer 52 of the wiring board 50. The second light-reflecting member 45 is in contact with the lower surface of the third light-transmitting member 46 and covers the side surface of the semiconductor structure 42.

The third translucent member 46 may contain a phosphor. In this case, the third translucent member 46 functions as an optical conversion member that converts incident light into light of another wavelength. The third translucent member 46 does not have to contain a phosphor. In this case, a phosphor sheet can be provided above the planar light source 10.

FIG. 16 is a cross-sectional view showing another example of the planar light source 210.

In the planar light source 210, the first light reflecting member 24 is provided on the wiring board 50, and the light guide plate 21 is provided on the first light reflecting member 24. The light guide plate 21 has an upper surface 21b and a lower surface 21a. The upper surface 21b and the lower surface 21a of the light guide plate are, for example, flat. The lower surface 21a of the light guide plate 21 is in contact with the first light reflective member 24. A wiring layer 52 is provided on the lower surface of the wiring board 50. The wiring layer 52 is patterned in a predetermined shape.

The light guide plate 21 is formed with a through hole 21e penetrating from the upper surface 21b to the lower surface 21a. The opening shape of the through hole 21e is, for example, a circular shape. However, the opening shape of the through hole 21e may be a polygonal shape such as a quadrangle or an octagon. A light source 22 is provided in the through hole 21e. A via hole 50e is provided immediately below the light source 22 so as to penetrate the first light reflective member 24 and the wiring board 50 from the upper surface to the lower surface, and the via hole 50e is filled with a conductive material. The light source 22 is connected to the wiring layer 52 by a conductive material arranged in the via hole 50e. A first translucent member 23 is provided in the through hole 21e so as to cover the light source 22. A light adjusting member 26 is provided on the first translucent member 23. The light adjusting member 26 is, for example, a resin material containing a light diffusing material, and diffusely reflects a part of the incident light and transmits the other part. The shape of the light adjusting member 26 in a plan view is, for example, a circle. A groove may be formed in the region corresponding to the boundary of the light emitting region R on the upper surface 21b of the light guide plate 21. As a result, adjacent light emitting regions R can be optically partitioned from each other. The configurations and effects other than the above in the present embodiment are the same as those in the first embodiment.

1 Package 10, 210 Planar light source 21 Light guide plate 22 Light source 23 1st translucent member 24 1st light reflective member 25 Wiring layer 26 Light adjustment member 30 Light emitting module 41 Light emitting element 42 Semiconductor structure 43 Electrode 45 2nd Light-reflecting member 46 Third translucent member 50 Wiring board 51 Insulation base material 52 Wiring layer 53 Coating layer 54 Via 55 Protective member 100 Tray 110 Accommodating unit 111 Light source accommodating unit 112 Terminal accommodating unit 121A First bottom surface 121B Second Bottom 130 Opening 140 Recess 150 Overhang

Claims (10)

A tray with a concave accommodating portion capable of accommodating a planar light source.
The accommodating portion has a bottom surface extending in a first direction and a second direction orthogonal to the first direction.
The planar light source comprises a flexible substrate and a plurality of light emitting modules fixed on the substrate and including a first light emitting module and a second light emitting module in the first direction.
The first light emitting module has a first A region and a first B region sandwiching a central portion of the first light emitting module in the first direction.
The second light emitting module has a second A region and a second B region sandwiching a central portion of the second light emitting module in the first direction.
In the first direction, the bottom surface of the accommodating portion has a first bottom surface and a second bottom surface sandwiching the first bottom surface and having a height lower than that of the first bottom surface.
The first bottom surface is a portion where the first light emitting module is arranged, and is a portion facing the lower surface of the substrate located below the first A region and the first B region.
The second bottom surface is a portion where the second light emitting module adjacent to the first light emitting module is arranged, and faces the lower surface of the substrate located below the second A region and the second B region. The tray that is the part. The tray according to claim 1, wherein the first bottom surface is arranged in the center of the bottom surface.
Continuously The tray according to claim 1 or 2, wherein the width of the first bottom surface in the second direction perpendicular to the first direction is wider than the width of the first light emitting module in a plan view. The tray according to claim 3, wherein the width of the first bottom surface in the second direction is wider than the width of the planar light source in a plan view. The tray according to claim 3 or 4, wherein the bottom surface has a width in the first direction wider than a width in the second direction. The tray according to any one of claims 3 to 5, wherein the first bottom surface and the second bottom surface are arranged in the second direction. The tray according to claim 1 or 2, wherein the bottom surface of the accommodating portion is a curved surface including the first bottom surface and the second bottom surface. The tray according to claim 7, wherein the bottom surface of the accommodating portion has a curvature in the first direction larger than the curvature in the second direction. The tray according to any one of claims 1 to 8, wherein the bottom surface of the accommodating portion has a plurality of recesses having an opening width narrower than the width of the light emitting module in the second direction. A package in which a planar light source is housed in the storage portion of the tray according to any one of claims 1 to 9.

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