Light-emitting device and image display device

Abstract

A light emitting device (1) comprises: a light emitting element (2) having a light emitting surface (2A); a light reflection part (3) that is disposed on a lateral surface side of the light emitting element (2) and on the opposite side to the light emitting surface (2A) of the light emitting element (2), and that reflects light having been emitted from the light emitting surface (2A); a lens (5) that is disposed on the light emitting surface (2A) side and that condenses light having been emitted from the light emitting surface (2A); and a light shielding part (6) that is disposed between the light emitting surface (2A) and the lens (5), that has an opening (6A) penetrating in the thickness direction to cause light to pass therethrough, and that shields light having been emitted from the light emitting surface (2A).

Description

Technical Field

[0005] , ,

[0004] , ,

[0001] The present disclosure relates to a light-emitting device and an image display device.

Background Art

[0002] Patent Document

[0005] below discloses a display element and a display device. The display element has a plurality of micro light-emitting elements arranged on a drive circuit board. On the light-emitting side of the micro light-emitting element, a wavelength conversion unit and a converging unit (lens) are sequentially arranged. The micro light-emitting element constitutes a pixel. The converging unit converges light and displays a pixel. The display device is constructed by including the above display element. The display element and the display device configured as described above have attracted attention as a next-generation high-brightness and small display. For example, applications to head-mounted displays (HMDs) such as augmented reality (AR) glasses and virtual reality (VR) goggles are expected.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] In the display element and the display device disclosed in Patent Document

[0005] above, a self-luminous device as a surface light source that scatters light isotropically is used for the micro light-emitting element. And, in the light-emitting element, the diameter on the emission surface side of the wavelength conversion unit and the diameter of the converging unit are configured to be substantially equal. Therefore, it is difficult for the converging unit to sufficiently converge light in the emission direction. On the other hand, in order to increase the luminance in the emission direction, it is necessary to expand the pixel pitch, reduce the emission area of the wavelength conversion unit, or increase the diameter of the converging unit.

[0005] Therefore, it is desirable for light-emitting devices and image display devices to achieve both high brightness in the emission direction and miniaturization of the pixel pitch.

[0006] The light-emitting device according to the first embodiment of the present disclosure comprises a light-emitting element having a light-emitting surface, a light-reflecting part disposed on the side of the light-emitting element opposite to the light-emitting surface and on the side of the light-emitting element, which reflects light emitted from the light-emitting surface, a lens disposed on the side of the light-emitting surface, which focuses light emitted from the light-emitting surface, and a light-shielding part disposed between the light-emitting surface and the lens, which has an opening that penetrates in the thickness direction and allows light to pass through, and which shields light emitted from the light-emitting surface.

[0007] An image display device according to a second embodiment of the present disclosure comprises a plurality of arranged light-emitting devices, each light-emitting device comprising: a light-emitting element having a light-emitting surface; a light-reflecting part disposed on the side opposite to the light-emitting surface of the light-emitting element and on the side of the light-emitting element, which reflects light emitted from the light-emitting surface; a lens disposed on the side of the light-emitting surface, which focuses light emitted from the light-emitting surface; and a light-shielding part disposed between the light-emitting surface and the lens, which has an opening that penetrates in the thickness direction and allows light to pass through, and which shields light emitted from the light-emitting surface. [Brief explanation of the drawing]

[0008] [Figure 1] This is a cross-sectional view of the main part of a light-emitting device and an image display device according to the first embodiment of the present disclosure. [Figure 2] Figure 1 is a plan view of the main parts of the light-emitting device and image display device shown. [Figure 3] Figures 1 and 2 are model diagrams illustrating the detailed structure of the light-emitting device. [Figure 4] Figure 3 is a graph showing the relationship between the aperture diameter of the aperture in the light-emitting device and the light intake angle. [Figure 5A] This is a cross-sectional view of the main part of the light-emitting device according to the first embodiment, which is the subject of brightness measurement. [Figure 5B] This is a cross-sectional view of the main part of the light-emitting device according to the first comparative example, which is the subject of brightness measurement. [Figure 5C]This is a cross-sectional view of the main part of the light-emitting device according to the second comparative example, which is the subject of brightness measurement. [Figure 6] This graph shows the results of brightness measurement for the light-emitting device according to the first embodiment, the light-emitting device according to the first comparative example, and the light-emitting device according to the second comparative example. [Figure 7] This is a first step cross-sectional view corresponding to Figure 1, illustrating the manufacturing method of a light-emitting device and an image display device according to the first embodiment. [Figure 8] This is a cross-sectional view of the second process. [Figure 9] This is a process cross-sectional view corresponding to Figure 1, illustrating a method for manufacturing a light-emitting device and an image display device according to a second embodiment of the present disclosure. [Figure 10] This is a cross-sectional view of the main part of the light-emitting device according to the third embodiment of this disclosure, corresponding to Figure 1. [Figure 11] This is a cross-sectional view of the main part of the light-emitting device according to the fourth embodiment of this disclosure, corresponding to Figure 1. [Figure 12] This is a cross-sectional view of the main part of the light-emitting device according to the fifth embodiment of this disclosure, corresponding to Figure 1. [Figure 13] This is a cross-sectional view of the main part of the light-emitting device according to the sixth embodiment of this disclosure, corresponding to Figure 1. [Figure 14] This is a cross-sectional view of the main part of the light-emitting device according to the seventh embodiment of this disclosure, corresponding to Figure 1. [Figure 15] This is a cross-sectional view of the main part of the light-emitting device according to the eighth embodiment of this disclosure, corresponding to Figure 1. [Figure 16A] This is a plan view of the main part of the light-emitting device according to the ninth embodiment of the present disclosure, corresponding to Figure 2. [Figure 16B] This is a plan view of the main part of the light-emitting device corresponding to Figure 16A of the first modified example of the ninth embodiment. [Figure 16C] This is a plan view of the main part of the light-emitting device corresponding to Figure 16A of the second modified example of the ninth embodiment. [Figure 16D] This is a plan view of the main part of the light-emitting device corresponding to Figure 16A of the third modified example of the ninth embodiment. [Figure 17]It is a cross-sectional view of a main part corresponding to FIG. 1 of a light-emitting device and an image display device according to the tenth embodiment of the present disclosure. [Figure 18] It is a cross-sectional view of a main part corresponding to FIG. 1 of a light-emitting device and an image display device according to the eleventh embodiment of the present disclosure. [Figure 19] It is a plan view of a main part corresponding to FIG. 2 of a light-emitting device and an image display device according to the eleventh embodiment. [Figure 20] It is a cross-sectional view of a main part corresponding to FIG. 1 of a light-emitting device and an image display device according to the twelfth embodiment of the present disclosure. [Figure 21] It is a schematic cross-sectional view of a main part of a light-emitting device according to the thirteenth embodiment of the present disclosure.

Embodiments for Carrying Out the Invention

[0009] [[ID=2))Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. The description will be made in the following order. 1. First Embodiment The first embodiment describes an example in which the present technology is applied to a light-emitting device and an image display device. Here, the basic structure and manufacturing method of the light-emitting device and the image display device will be described. 2. Second Embodiment The second embodiment describes a modification of the manufacturing method of the light-emitting device and the image display device according to the first embodiment. 3. Third Embodiment The third embodiment describes a first modification example of the light reflection part in the light-emitting device and the image display device according to the first embodiment. 4. Fourth Embodiment The fourth embodiment describes a second modification example of the light reflection part in the light-emitting device and the image display device according to the first embodiment. 5. Fifth Embodiment The fifth embodiment describes a first modification example of the light control part in the light-emitting device and the image display device according to the first embodiment. 6. Sixth Embodiment The sixth embodiment describes a first modification example of the light shielding part in the light-emitting device and the image display device according to the first embodiment. 7. Seventh Embodiment The seventh embodiment describes a second modification of the light-shielding portion in the light-emitting device and image display device according to the first embodiment. 8. Eighth Embodiment The eighth embodiment describes a second modification of the light control unit in the light-emitting device and image display device according to the first embodiment. 9. Ninth Embodiment The ninth embodiment describes a third modification of the light-shielding portion in the light-emitting device and image display device according to the first embodiment. Here, several variations of the third modification are described. 10. Tenth Embodiment The tenth embodiment describes a third modification of the light control unit in the light-emitting device and image display device according to the first embodiment. 11. Eleventh Embodiment The eleventh embodiment describes a fourth modification of the light-shielding portion in the light-emitting device and image display device according to the first embodiment. 12. Twelfth Embodiment The twelfth embodiment describes a first modification of the lens in the light-emitting device and image display device according to the first embodiment. 13. Thirteenth Embodiment The 13th embodiment describes a second modification of the lens in the light-emitting device and image display device according to the first embodiment. Here, several variations of the second modification are described. 14. Other Embodiments

[0010] <1. First Embodiment> The light-emitting device 1 and image display device 100 according to the first embodiment of this disclosure will be described with reference to Figures 1 to 8.

[0011] Here, the arrow X direction, as shown in the figure, conveniently indicates one planar direction of the light-emitting device 1 and image display device 100 placed on a plane. The arrow Y direction indicates another planar direction perpendicular to the arrow X direction. The arrow Z direction indicates the upward direction, perpendicular to both the arrow X and arrow Y directions. In other words, the arrow X, arrow Y, and arrow Z directions coincide precisely with the X-axis, Y-axis, and Z-axis directions of the three-dimensional coordinate system, respectively. These directions are provided to aid in understanding the explanation and do not limit the directions of this technology.

[0012] [Configuration of the light-emitting device 1 and the image display device 100] (1) General configuration of the light-emitting device 1 and the image display device 100 Figure 1 shows an example of the longitudinal cross-sectional configuration of the light-emitting device 1 and the image display device 100. Figure 2 shows an example of the planar configuration of the light-emitting device 1 and the image display device 100. Note that the cross-sectional configuration shown in Figure 1 is the cross-sectional configuration cut along the AA cutting line shown in Figure 2. Also, in Figure 2, some of the components shown in Figure 1, specifically the lens 5, are omitted.

[0013] The image display device 100 according to the first embodiment includes a plurality of arranged light-emitting devices 1. Here, the light-emitting devices 1 are arranged in multiple directions in both the X-direction and the Y-direction. Furthermore, the light-emitting devices 1 arranged in the X-direction are offset from other light-emitting devices 1 arranged in the X-direction adjacent to them in the Y-direction by an array pitch of half the array pitch of the light-emitting devices 1.

[0014] The light-emitting device 1 is arranged on a substrate 10. The light-emitting device 1 mainly comprises a light-emitting element 2, a light-reflecting section 3, a light-control section 4, a lens 5, and a light-shielding section 6.

[0015] (2) Configuration of the substrate 10 The substrate 10 is a common substrate for the multiple light-emitting devices 1 arranged in a row, and also serves as the substrate for the image display device 100. The substrate 10 is equipped with a drive circuit (not shown) for driving the light-emitting devices 1. The substrate 10 is formed from, for example, a semiconductor substrate such as a silicon substrate, a glass substrate, or a glass epoxy substrate.

[0016] (3) Configuration of the light-emitting element 2 A self-emitting light source is used in the light-emitting element 2. The light-emitting element 2 is formed in a circular shape when viewed from the direction of arrow Z (hereinafter simply referred to as "plan view") and in a layered shape when viewed from the direction of arrow Y (hereinafter simply referred to as "side view"). The upper surface of the light-emitting element 2 in the direction of arrow Z (hereinafter simply referred to as "upper direction") is the light-emitting surface 2A. In the light-emitting element 2, light is emitted isotropically upward from the light-emitting surface 2A. Here, in a plane extending in the direction of arrow X or arrow Y (hereinafter simply referred to as "plane"), the light emission diameter D of the light-emitting surface 2A (see Figures 1 and 3) is the diameter dimension of the region in which light is effectively emitted.

[0017] The light-emitting element 2 is, in this case, formed by, for example, an LED (Light Emitting Diode). The LED is formed by a III-V compound semiconductor (inorganic compound semiconductor). Furthermore, the light-emitting element 2 may also be a LASER (Light Amplification by Stimulated Emission of Radiation) formed from a compound semiconductor. Alternatively, it may be an organic electroluminescent (EL) formed from an organic semiconductor.

[0018] (4) Configuration of the light reflecting section 3 The light-reflecting section 3 comprises at least a first light-reflecting section 3A and a second light-reflecting section 3B. The first light reflecting section 3A is located on the opposite side of the light-emitting surface 2A of the light-emitting element 2, facing the lower surface of the light-emitting element 2, and is arranged in a planar manner. In the first light reflecting section 3A, light emitted from the light-emitting surface 2A is reflected upward. The second light reflecting section 3B surrounds the side of the light-emitting element 2 and extends upward from the first light reflecting section 3A beyond the light-emitting element 2. In the second light reflecting section 3B, light emitted from the light-emitting surface 2A is reflected upward. In this first embodiment, the second light reflecting portion 3B is erected perpendicularly to the first light reflecting portion 3A. The second light reflecting portion 3B only needs to have the function of reflecting light upwards, so for example, the portion facing the first light reflecting portion 3A may be formed by an inclined surface that widens (expands in diameter) towards the top of the first light reflecting portion 3A.

[0019] In the first embodiment, the light reflecting portion 3 further comprises a third light reflecting portion 3C. The third light reflecting portion 3C is located on the light-emitting surface 2A side of the light-shielding portion 6, which is arranged opposite the light-emitting surface 2A of the light-emitting element 2. The third light reflecting portion 3C is formed in a planar shape. In the third light reflecting portion 3C, light emitted from the light-emitting surface 2A is reflected toward the light-emitting surface 2A side.

[0020] The first light-reflecting section 3A, the second light-reflecting section 3B, and the third light-reflecting section 3C of the light-reflecting section 3 may be interconnected, or they may be partially or completely separated. For example, a part of the second light-reflecting section 3B, specifically the boundary portion between the light-emitting element 2 and the light-control section 4, may be separated.

[0021] The first light-reflecting section 3A, the second light-reflecting section 3B, and the third light-reflecting section 3C are each formed from a metal with excellent light-reflecting properties, such as aluminum (Al). Furthermore, while the first light-reflecting portion 3A, the second light-reflecting portion 3B, and the third light-reflecting portion 3C may all be formed from metal, the base portion may be formed from resin, and the metal portion may be formed on the surface of the resin. Furthermore, metals with excellent light reflection properties, such as Ag, Au, Pt, Cu, and Ti, can also be used practically.

[0022] (5) Configuration of the optical control unit 4 The light control unit 4 is located on the light-emitting surface 2A side of the light-emitting element 2 within the region surrounded by the first light-reflecting section 3A and the second light-reflecting section 3B of the light-reflecting section 3, and further, the third light-reflecting section 3C. In the first embodiment, the light control unit 4 is formed of a light wavelength conversion material that controls (converts) the wavelength of light. In other words, the light control unit 4 absorbs the light emitted from the light-emitting surface 2A, and the wavelength of the absorbed light is converted. For example, the light control unit 4 converts blue light emitted from the light-emitting surface 2A to green light, blue light to red light, or blue light to blue light. In Figure 1, the light emitted from the light-emitting surface 2A of the light-emitting element 2 is shown by a "solid line". The light whose wavelength is controlled by the light control unit 4, i.e., the fluorescence excitation light, is shown by a "dashed line with an arrow". Furthermore, a "star symbol" is conveniently shown at the connection point between the "solid line" and the "dashed line with an arrow" to indicate that the light has been converted from light to fluorescence excitation light. As the light wavelength conversion material, for example, inorganic phosphors, organic phosphors, or quantum dots can be used.

[0023] (6) Configuration of lens 5 Lens 5 is positioned on the opposite side of the light-emitting element 2 of the light-control unit 4. The center of lens 5 is aligned with the optical axis Lc of the light emitted from the light-emitting surface 2A. An optical spherical lens with an upward projection is used for lens 5. Lens 5 is formed of, for example, a silicon oxide film (SiO2). Light emitted from the light-emitting surface 2A, whose wavelength has been controlled through the light-control unit 4, is focused into lens 5. The lens 5 may also be formed from an inorganic material such as silicon nitride (SiN), an organic material such as a transparent resin, or the like.

[0024] The lens diameter Ld of the lens 5, which has a radius of curvature R, is formed to be the same as or larger than the light emission diameter D of the light-emitting element 2 (see Figure 3). For example, the lens diameter Ld of the lens 5 is formed to be larger than the light emission diameter D by the thickness of the second light-reflecting element 3B that is opposite to the light-reflecting element 3 in the planar direction. With this configuration, the array pitch of the light-emitting element 1 and the array pitch of the lens 5 can be matched in the image display device 100.

[0025] (7) Configuration of the light shielding section 6 The light shielding section 6 is disposed between the light control unit 4 and the lens 5 and is formed in the shape of a plate. The light shielding section 6 has an aperture 6A that penetrates in the thickness direction and allows wavelength-controlled light from the light control unit 4 to pass through.

[0026] The light shielding section 6 is formed in a planar direction over the entire upper surface of the light control unit 4, except for the aperture 6A, and shields the light from the light control unit 4 to the lens 5. As described above, a third light reflecting section 3C is provided on the light-emitting element 2 side of the light shielding section 6, so the light directed toward the light shielding section 6 is reflected toward the light-emitting surface 2A side by the third light reflecting section 3C. The light-shielding portion 6 is made of Al because it includes a third light-reflecting portion 3C. Alternatively, the light-shielding portion 6 may be made of a resin that does not transmit light, such as a resin containing black ink. Furthermore, the light-shielding portion 6 may be formed on a base of a metal with a lower reflectivity than Al, with a metal with a higher reflectivity formed on the surface of this metal.

[0027] An aperture 6A is provided for each light-emitting element 2. In the first embodiment, the aperture 6A is formed in a circular shape in a plan view, similar to the shape of the light-emitting surface 2A. The aperture 6A is formed with an aperture diameter A smaller than the lens diameter Ld and the light-emitting diameter D (see Figure 3). The aperture diameter A is formed to be the same dimension across the thickness direction of the light-shielding portion 6. Therefore, the opening end face of the aperture 6A is formed on a vertical surface. Furthermore, the aperture diameter A is formed to be greater than or equal to the focusing diameter (spot diameter) Ls of the lens 5 when light is shone from above the lens 5. For example, the aperture diameter A is formed to be greater than 10 nm. The center position of aperture 6A is aligned with the optical axis Lc. The aperture 6A allows light emitted from the light-emitting surface 2A and controlled by the light control unit 4 to pass through. Furthermore, the aperture 6A allows light emitted from the light-emitting surface 2A, reflected by the light-reflecting unit 3, and controlled by the light control unit 4 to pass through.

[0028] (8) Relationship between aperture diameter A and intake angle θ Figure 3 shows a model illustrating the detailed longitudinal cross-sectional configuration of the light-emitting device 1. When light is irradiated from the light-emitting device 1 onto the projection surface 7 of the optical system, it is desirable to set the radius of curvature R of the lens 5 to half the emission diameter D of the light-emitting element 2 (R = D / 2). The acquisition angle θ is the angle of the spread of the emitted light relative to the perpendicular from the projection surface 7. Also, the lens diameter Ld is set to the same dimension as the emission diameter D (Ls = D). In Figure 3, for convenience, the end face diameter of the lens 5 side of the light control unit 4 is shown as the light emission diameter D. With this configuration, the light focusing efficiency from the light-emitting device 1 to the projection surface 7 can be improved, and a low-profile structure can be realized that reduces the height of the light-emitting device 1 in the direction of arrow Z. Furthermore, the portion where light set to the intake angle θ is focused onto the surface of the light control unit 4 through the lens 5 (the portion where the focusing diameter Ls is generated) is defined as the light emission position. The height T is defined as the distance from the light emission position to the top of the lens 5.

[0029] Figure 4 shows the relationship between the acquisition angle θ and the magnification. The horizontal axis represents the acquisition angle θ, and the vertical axis represents the magnification. The magnification is expressed by the following formula. Aperture A = Magnification × Emission Diameter D The data D1 shown in Figure 4 is "R = D / 2". As mentioned above, "R" is the radius of curvature of lens 5. "D" is the emission diameter of the light-emitting surface 2A. The data D2 is "R = D / 2 × 1.2". The data D3 is "R = D / 2 × 1.6". As is clear from Figure 4, the magnification tends to decrease as the radius of curvature R increases. Also, the acquisition angle θ tends to decrease as the magnification decreases. Furthermore, the acquisition angle θ tends to decrease as the aperture diameter A of the aperture 6A of the light-shielding part 6 decreases.

[0030] (9) Regarding the brightness of the light-emitting device 1 Figure 5A shows the vertical cross-sectional configuration of the light-emitting device 1 according to the first embodiment. Figure 5B shows the longitudinal cross-sectional configuration of the light-emitting device 1A according to the first comparative example. The light-emitting device 1A does not include the light-shielding part 6 (and the third light-reflecting part 3C), aperture 6A, and lens 5 components of the light-emitting device 1. Figure 5C shows the longitudinal cross-sectional configuration of the light-emitting device 1B according to the second comparative example. The light-emitting device 1B has the lens 5 components of the light-emitting device 1, but does not have the light-shielding portion 6 (and the third light-reflecting portion 3C) and the aperture 6A components.

[0031] Figure 6 shows the luminance of the light-emitting device 1 according to the first embodiment, the light-emitting device 1A according to the first comparative example, and the light-emitting device 1B according to the second comparative example. The vertical axis represents luminance. Ray tracing was used to measure the luminance.

[0032] Figure 6 shows the measurement results when the acquisition angle θ is set to approximately ±10°. Data D5 is the brightness of the light-emitting device 1A according to the first comparative example. Here, the brightness of light-emitting device 1A is set to the reference value of "100%". Data D6 is the brightness of light-emitting device 1B according to the second comparative example. Although it is equipped with lens 5, there is almost no change in the brightness of light-emitting device 1B compared to the brightness of light-emitting device 1A. Data D4 represents the brightness of the light-emitting device 1 according to the first embodiment. The brightness of the light-emitting device 1 is significantly increased compared to the brightness of light-emitting device 1A and the brightness of light-emitting device 1B. The increase in brightness reaches approximately 50%.

[0033] [Manufacturing method for light-emitting device 1 and image display device 100] Next, the manufacturing method of the light-emitting device 1 and the image display device 100 will be briefly described. Figures 7 and 8 show cross-sectional views illustrating the manufacturing process of the light-emitting device 1 and the image display device 100 according to the first embodiment.

[0034] First, a light-reflecting section 3 is formed, including a first light-reflecting section 3A and a second light-reflecting section 3B (see Figure 7). The light-emitting element 2 and the light-control section 4 are then sequentially formed within the light-reflecting section 3 (see Figure 7). Next, a light shielding section 6 is formed on the light control unit 4, and an opening 6A is formed in the light shielding section 6 (see Figure 7). A lens-forming layer 5A is formed on the light-shielding portion 6, which includes the aperture 6A (see Figure 7). The lens-forming layer 5A is formed of, for example, SiO2. As shown in Figure 7, the surface portion of the lens-forming layer 5A is removed in the region between the light-emitting devices 1. This removal creates grooves 5B on the surface portion of the lens-forming layer 5A. Photolithography and etching techniques are used for this removal.

[0035] As shown in Figure 8, reflow is performed on the lens formation layer 5A, and a spherical lens 5 is formed from the lens formation layer 5A. Once these manufacturing processes are complete, the light-emitting device 1 and the image display device 100, which consists of multiple light-emitting devices 1 arranged in a row, are completed.

[0036] In the manufacturing method of the light-emitting device 1 and image display device 100 according to the first embodiment, a large number of lenses 5 can be manufactured at once. Therefore, manufacturing costs can be reduced.

[0037] [Effects and Effects] As shown in Figures 1 and 2, the light-emitting device 1 according to the first embodiment comprises a light-emitting element 2, a light-reflecting unit 3, a light-control unit 4, a lens 5, and a light-shielding unit 6. The light-emitting element 2 has a light-emitting surface 2A. The light-reflecting section 3 is located on the side of the light-emitting element 2 opposite to the light-emitting surface 2A and on the side of the light-emitting element 2, and reflects the light emitted from the light-emitting surface 2A. The light-control unit 4 is located on the side of the light-emitting surface 2A within the area surrounded by the light-reflecting section 3, and controls the wavelength of light. The lens 5 is located on the side of the light-control unit 4 opposite to the light-emitting element 2, and focuses the light emitted from the light-emitting surface 2A. The light shielding section 6 is positioned between the light control unit 4 and the lens 5, and has an opening 6A that penetrates in the thickness direction to allow light to pass through, thereby shielding the light emitted from the light-emitting surface 2A. In the light-emitting device 1, light emitted from the light-emitting surface 2A of the light-emitting element 2 is emitted from the aperture 6A via the light control unit 4, reflected by the light reflecting unit 3, and emitted again from the aperture 6A via the light control unit 4. Therefore, as shown in Figure 6, high brightness in the emission direction can be achieved. In addition, since the light-emitting device 1 can achieve high brightness in the emission direction, the light-emitting diameter D of the light-emitting surface 2A of the light-emitting element 2 (end face dimension of the light-emitting control unit 4) and the lens diameter Ld of the lens 5 can be formed to be of the same size. Therefore, a narrow pitch can be achieved for the light-emitting device 1. Therefore, the light-emitting device 1 and the image display device 100 equipped with the light-emitting device 1 can achieve both high brightness in the emission direction and miniaturization of the pixel pitch.

[0038] Furthermore, since the light-emitting device 1 can achieve high brightness, low power consumption operation becomes possible. In addition, the light-emitting device 1 is equipped with a light control unit 4, as shown in Figure 1. Therefore, since the fluorescence excitation light can also be confined to the light control unit 4 and its wavelength can be controlled, the mixing of colors in the final emitted light can be reduced. Furthermore, in the light-emitting device 1, the light control unit 4 is surrounded by the light-reflecting unit 3, which allows for a longer effective optical path length through reflection. As a result, the light-emitting device 1 and the image display device 100 can achieve a lower profile for the light control unit 4.

[0039] Furthermore, in the light-emitting device 1, as shown in Figures 1 and 3, the aperture diameter A of the aperture 6A is smaller than the lens diameter Ld of the lens 5 and the light emission diameter D of the light-emitting surface 2A, and larger than the focusing diameter Ls of the lens 5 at the light emission position. Therefore, as shown in Figure 4, the intake angle θ can be reduced.

[0040] Furthermore, in the light-emitting device 1, as shown in Figures 1 and 3, the light-emitting diameter D of the light-emitting surface 2A is the same as or smaller than the lens diameter Ld of the lens 5. Therefore, the array pitch of the light-emitting elements 2 can be made to match or approximate the array pitch of the lens 5, thereby enabling a narrower pitch for the light-emitting device 1.

[0041] Furthermore, as shown in Figure 1, the light-emitting device 1 includes a third light-reflecting section 3C that reflects light. The third light-reflecting section 3C is located on the light-emitting surface 2A side of the light-shielding section 6. Therefore, in the light-emitting device 1, the light reflected by the third light-reflecting section 3C and emitted from the aperture 6A via the light-control section 4 is added together, making it possible to achieve even higher brightness in the emission direction.

[0042] Furthermore, the effects obtained by the light-emitting device 1 can also be obtained as similar effects in the image display device 100.

[0043] <2. Second Embodiment> Next, a light-emitting device 1 and an image display device 100 according to a second embodiment of this disclosure will be described. In the second embodiment and subsequent embodiments, components that are the same as or substantially the same as components of the light-emitting device 1 and image display device 100 according to the first embodiment will be denoted by the same reference numerals, and redundant descriptions will be omitted.

[0044] [Manufacturing method for light-emitting device 1 and image display device 100] The second embodiment describes a modified version of the manufacturing method of the light-emitting device 1 and image display device 100 according to the first embodiment. Figure 9 shows a cross-sectional view of the process illustrating the manufacturing method of the light-emitting device 1 and image display device 100 according to the second embodiment.

[0045] As shown in Figure 9, in the manufacturing method of the light-emitting device 1 and the image display device 100, the light-shielding part 6 and the lens 5 are attached to the pre-fabricated light control unit 4 and the second light-reflecting part 3B of the light-reflecting part 3. The lens 5 is pre-fabricated on the light-shielding part 6 by glass molding or resin molding. An opening 6A is formed in the light-shielding part 6. Adhesive 6B is used for attachment.

[0046] In the manufacturing method of the light-emitting device 1 and image display device 100 according to the second embodiment, the manufacturing of the light-emitting device 1 up to the light control unit 4 and the manufacturing of the light shielding unit 6 and lens 5 can be carried out independently under optimal conditions. Therefore, the manufacturing yield can be improved.

[0047] [Differentiation] In the manufacturing method of the light-emitting device 1 and image display device 100 according to the second embodiment, the lens 5 can be manufactured using imprint lithography technology, which transfers the lens shape of a mold onto a lens-forming layer such as glass or resin. In this case, similar to the manufacturing method of the light-emitting device 1 and image display device 100 according to the second embodiment, the lens 5 is attached after it has been manufactured.

[0048] <3. Third Embodiment> Next, a light-emitting device 1 and an image display device 100 according to the third embodiment of this disclosure will be described. Figure 10 shows the longitudinal cross-sectional configuration of the light-emitting device 1 according to the third embodiment. In the third to ninth embodiments, only one light-emitting device 1 will be described, and the description of the image display device 100 will be omitted.

[0049] [Configuration of Light-Emitting Device 1] The light-emitting device 1 according to the third embodiment is equipped with a third light-reflecting section 3D in place of the third light-reflecting section 3C of the light-emitting device 1 according to the first embodiment. The third light-reflecting section 3D is disposed on the light-emitting element 2 side of the light-shielding section 6, similar to the third light-reflecting section 3C. The third light-reflecting section 3D is formed as a scattering surface.

[0050] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0051] [Effects and Effects] In the light-emitting device 1 according to the third embodiment, the light-reflecting section 3 is equipped with a third light-reflecting section 3D, which scatters light that does not go toward the aperture 6A and efficiently focuses it toward the aperture 6A. As a result, it is possible to achieve even higher brightness in the emission direction.

[0052] Furthermore, the third light-reflecting section 3D can be expected to produce the same optical effect as when the light control unit 4 contains a scatterer, thus increasing the effective optical path length in the light control unit 4. This allows for a lower profile light control unit 4. In addition, color mixing can be reduced. Furthermore, if a scatterer is included in the optical control unit 4, the amount of the scatterer can be reduced in the optical control unit 4. This reduces variations in the optical properties of the optical control unit 4 and improves optical reliability.

[0053] <4. Fourth Embodiment> Next, a light-emitting device 1 according to the fourth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 11 shows the vertical cross-sectional configuration of the light-emitting device 1 according to the fourth embodiment. The fourth embodiment of the light-emitting device 1 is equipped with a third light-reflecting part 3E in the light-reflecting part 3, instead of the third light-reflecting part 3C of the light-emitting device 1 of the first embodiment. The third light-reflecting part 3E is arranged on the light-emitting element 2 side of the light-shielding part 6, similar to the third light-reflecting part 3C. The third light-reflecting part 3E is formed on a curved surface that is recessed toward the lens 5 side.

[0054] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0055] [Effects and Effects] In the fourth embodiment of the light-emitting device 1, the same effects and benefits as those obtained with the light-emitting device 1 of the third embodiment can be obtained. Furthermore, since the light-emitting device 1 is equipped with a third light reflecting section 3E, light that does not go toward the aperture 6A is reflected by the third light reflecting section 3E, allowing the light to be efficiently focused toward the aperture 6A. As a result, further increases in brightness in the emission direction can be achieved.

[0056] <5. Fifth Embodiment> Next, a light-emitting device 1 according to the fifth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 12 shows the vertical cross-sectional configuration of the light-emitting device 1 according to the fifth embodiment. The light-emitting device 1 according to the fifth embodiment includes a second lens 8 between the light-emitting surface 2A of the light-emitting element 2 and the light control unit 4. The second lens 8 has a curved surface that is concave toward the light-emitting surface 2A and focuses the light emitted from the light-emitting surface 2A. The second lens 8 can be formed using, for example, the same material as lens 5.

[0057] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0058] [Effects and Effects] In the fifth embodiment of the light-emitting device 1, the same effects and benefits as those obtained by the light-emitting device 1 according to the third embodiment can be obtained. Furthermore, in the fifth embodiment of the light-emitting device 1, a second lens 8 is provided, which allows for efficient focusing of the light emitted from the light-emitting surface 2A towards the aperture 6A. This makes it possible to achieve even higher brightness in the emission direction.

[0059] <6. Sixth Embodiment> Next, a light-emitting device 1 according to the sixth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 13 shows the vertical cross-sectional configuration of the light-emitting device 1 according to the sixth embodiment. The light-emitting device 1 according to the sixth embodiment is provided with an aperture 6C in the light-shielding portion 6, instead of the aperture 6A of the light-emitting device 1 according to the first embodiment. The aperture 6C is formed on an inclined surface in which the aperture diameter A expands from the light-control portion 4 toward the lens 5. In other words, the opening end face of the aperture 6C is formed on an inclined surface. A fourth light-reflecting section 3F is provided on the inclined surface of the aperture 6C. When a metal with high reflectivity is used for the light-shielding section 6, the inclined surface of the aperture 6C is formed as the fourth light-reflecting section 3F. When a material with low reflectivity is used for the light-shielding section 6, a fourth light-reflecting section 3F with high reflectivity is separately formed on the inclined surface of the aperture 6C.

[0060] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0061] [Effects and Effects] In the sixth embodiment of the light-emitting device 1, the same effects and benefits as those obtained with the first embodiment of the light-emitting device 1 can be obtained. Furthermore, the light-emitting device 1 according to the sixth embodiment includes an aperture 6C that widens toward the lens 5. A fourth light-reflecting section 3F is provided in the aperture 6C. Therefore, the fourth light-reflecting section 3F of the aperture 6C can concentrate high-angle light toward the front in the direction of emission. Consequently, the brightness of the front can be further improved.

[0062] <7. Seventh Embodiment> Next, a light-emitting device 1 according to the seventh embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 14 shows the longitudinal cross-sectional configuration of the light-emitting device 1 according to the seventh embodiment. The light-emitting device 1 according to the seventh embodiment is equipped with a wavelength cut filter 9A between the light shielding part 6 and the lens 5, in addition to the light-emitting device 1 according to the first embodiment. Note that the wavelength cut filter 9A may also be located below the light shielding part 6.

[0063] The wavelength cut filter 9A is formed as a long-pass edge filter. Although a detailed diagram of the configuration is omitted, the wavelength cut filter 9A is formed by stacking a high refractive index material (e.g., TiO2) and a low refractive index material (e.g., SiO2) to form a multilayer film (e.g., (0.5L, 1H, 0.5L) × 10 layers). The wavelength cut filter 9A can reflect only the excitation light whose wavelength is not controlled by the optical control unit 4.

[0064] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0065] [Effects and Effects] In the seventh embodiment of the light-emitting device 1, the same effects and benefits as those obtained with the light-emitting device 1 of the first embodiment can be obtained.

[0066] Furthermore, the light-emitting device 1 according to the seventh embodiment is equipped with a wavelength cut filter 9A, so that the optical control unit 4 reflects only the excitation light whose wavelength is not controlled, thereby reducing color mixing. In addition, the effective optical path length in the optical control unit 4 can be increased, which enables a lower profile for the optical control unit 4.

[0067] <8. Eighth Embodiment> Next, the light-emitting device 1 according to the eighth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 15 shows the vertical cross-sectional configuration of the light-emitting device 1 according to the eighth embodiment. The light-emitting device 1 according to the eighth embodiment is equipped with a wavelength cut filter 9B between the light-emitting element 2 and the light control unit 4, in addition to the light-emitting device 1 according to the first embodiment.

[0068] The wavelength cut filter 9B is formed as a short-pass type edge filter. The configuration of the wavelength cut filter 9B is the same as that of the wavelength cut filter 9A of the light-emitting device 1 according to the seventh embodiment. The wavelength cut filter 9B allows the light control unit 4 to reflect only the fluorescence excitation light.

[0069] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0070] [Effects and Effects] In the eighth embodiment of the light-emitting device 1, the same effects and benefits as those obtained with the light-emitting device 1 of the first embodiment can be obtained.

[0071] Furthermore, in the light-emitting device 1 according to the eighth embodiment, a wavelength cut filter 9B is provided, so that only the fluorescence excitation light is reflected in the optical control unit 4, and the optical path length of the optical control unit 4 can be increased. As a result, the height of the optical control unit 4 can be reduced.

[0072] <9. Ninth Embodiment> Next, a light-emitting device 1 according to the ninth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 16A shows the planar configuration of the light-emitting device 1 according to the ninth embodiment. In the light-emitting device 1 according to the ninth embodiment, an aperture 6D is provided in the light shielding section 6. In a plan view, the aperture 6D is formed in an elliptical shape with the direction of arrow X as its major axis. In other words, the aperture 6D is configured to expand the emission range in the direction of arrow X and reduce the emission range in the direction of arrow Y. The shape of the emitted light on the projection surface 7 (see Figure 3) is elliptical.

[0073] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0074] [Effects and Effects] In the ninth embodiment of the light-emitting device 1, the same effects and benefits as those obtained with the light-emitting device 1 of the first embodiment can be obtained.

[0075] Furthermore, since the light-emitting device 1 is equipped with an elliptical aperture 6D, the emission range in the direction of arrow X can be expanded and the brightness can be increased. On the other hand, the emission range in the direction of arrow Y can be reduced and the emission range can be limited. Therefore, a display method that limits the viewing angle in a certain direction, such as a privacy filter, can be easily implemented by changing the shape of the aperture 6D.

[0076] [First variation] Figure 16B shows a plan view of the light-emitting device 1 according to the first modified example of the ninth embodiment. In the first modified light-emitting device 1, an aperture 6E is provided in the light-shielding section 6. In a plan view, the aperture 6E is formed in the shape of a square, with the lengths of the sides in the X-direction and Y-direction being the same. The shape of the emitted light on the projection surface 7 (see Figure 3) is square. Similar to the light-emitting device 1 according to the ninth embodiment, when increasing the brightness of emission in a specific range and limiting emission in a specific range, it is preferable to combine and arrange a cylindrical lens as, for example, lens 5.

[0077] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0078] In the first modified example of the light-emitting device 1, the same effects and benefits as those obtained by the light-emitting device 1 according to the ninth embodiment can be obtained.

[0079] [Second variation] Figure 16C shows a plan view of the light-emitting device 1 according to a second modified example of the ninth embodiment. In the second modified light-emitting device 1, an aperture 6F is provided in the light-shielding section 6. In a plan view, the aperture 6F is formed in the shape of a rectangle with a longer side in the direction of arrow X and a shorter side in the direction of arrow Y. The shape of the emitted light on the projection surface 7 (see Figure 3) is rectangular.

[0080] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0081] In the second modified example of the light-emitting device 1, the same effects and benefits as those obtained by the light-emitting device 1 according to the ninth embodiment can be obtained.

[0082] [Third variation] Figure 16D shows a planar configuration of the light-emitting device 1 according to the third modified example of the ninth embodiment. In the third modified light-emitting device 1, an aperture 6G is provided in the light-shielding section 6. The aperture 6G is formed in a polygonal shape in a plan view. Here, the aperture 6G is formed in a regular hexagonal shape. The shape of the emitted light on the projection surface 7 (see Figure 3) is polygonal. Here, polygons include triangular, pentagonal, heptagonal, and polygons with more than one side. In polygons, the lengths of each side may or may not be the same. Also, similar to the light-emitting device 1 according to the first modification, a cylindrical lens can be combined.

[0083] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0084] In the third modified example of the light-emitting device 1, the same effects and benefits as those obtained by the light-emitting device 1 according to the ninth embodiment can be obtained.

[0085] <10. Tenth Embodiment> Next, a light-emitting device 1 and an image display device 100 according to the tenth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 17 shows the vertical cross-sectional configuration of the light-emitting device 1 and the image display device 100 according to the tenth embodiment. In the light-emitting device 1 according to the tenth embodiment, a light-emitting device 40 is provided instead of the light-emitting device 1 according to the first embodiment. The light-emitting device 40 is formed by a light-scattering material that controls the scattering of light. The light-scattering material is formed by a color-converting material. Specifically, a red-converting material, a green-converting material, or a blue-converting material is used.

[0086] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0087] [Effects and Effects] In the light-emitting device 1 according to the 10th embodiment, the same effects and benefits as those obtained with the light-emitting device 1 according to the first embodiment can be obtained.

[0088] <11. Eleventh Embodiment> Next, a light-emitting device 1 and an image display device 100 according to the 11th embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 18 shows the longitudinal cross-sectional configuration of the light-emitting device 1 and image display device 100 according to the 11th embodiment. Figure 19 shows the planar configuration of the light-emitting device 1 and image display device 100 shown in Figure 18.

[0089] In the light-emitting device 1 according to the 11th embodiment, a light control unit 4 is provided in one light-reflecting section 3, which is composed of a first light-reflecting section 3A and a second light-reflecting section 3B, and a plurality of apertures 6A are provided in the light-shielding section 6. One light-emitting element 2 is provided for each aperture 6A. Although the number of elements provided is not limited, in the 11th embodiment, six apertures 6A and six light-emitting elements 2 are provided in one light-reflecting section 3. A fine microlens array 50 is arranged on the light-shielding portion 6. The lenses of the microlens array 50 are arranged in a manner corresponding to the position where the aperture 6A is located.

[0090] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0091] [Effects and Effects] In the 11th embodiment of the light-emitting device 1, the same effect as that obtained with the light-emitting device 1 of the first embodiment can be obtained, which is that high brightness in the emission direction can be achieved.

[0092] <12. Twelfth Embodiment> Next, a light-emitting device 1 and an image display device 100 according to the twelfth embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 20 shows the vertical cross-sectional configuration of the light-emitting device 1 and the image display device 100 according to the twelfth embodiment.

[0093] In the light-emitting device 1 according to the twelfth embodiment, an opposing lens 51 is arranged on the light-shielding portion 6 via a gap 11. The light-emitting side of the opposing lens 51 is a flat surface.

[0094] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0095] [Effects and Effects] In the light-emitting device 1 according to the 12th embodiment, the same effects and benefits as those obtained with the light-emitting device 1 according to the first embodiment can be obtained. Furthermore, in the light-emitting device 1, the light-emitting surface side of the opposing lens 51 is flat. This provides mechanical advantages, such as the ability to attach filters or films to the opposing lens 51.

[0096] <13. 13th Embodiment> Next, a light-emitting device 1 and an image display device 100 according to the 13th embodiment of this disclosure will be described. [Configuration of Light-Emitting Device 1] Figure 21 shows the longitudinal cross-sectional configuration of the light-emitting device 1 and the lens 5 of the image display device 100 according to the 13th embodiment.

[0097] In the light-emitting device 1 according to the 13th embodiment, the lens 5 is formed in a trapezoidal or trapezoidal shape that approximates a spherical shape when viewed from the side.

[0098] Other components are the same as those of the light-emitting device 1 according to the first embodiment.

[0099] [Effects and Effects] In the light-emitting device 1 and image display device 100 according to the 13th embodiment, the same effects and benefits as those obtained with the light-emitting device 1 and image display device 100 according to the first embodiment can be obtained. Furthermore, in the light-emitting device 1 and the image display device 100, the trapezoidal shape of the lens 5 allows for smaller manufacturing variations in shape compared to the spherical shape of the lens 5. Therefore, the brightness can be made uniform in all light-emitting devices 1 of the image display device 100.

[0100] [Differentiation] In the light-emitting device 1 according to the 13th embodiment, a Fresnel surface can be provided on the lens 5. Furthermore, the lens 5 may be formed from a diffractive lens. When a lens 5 configured in this way is used, the light-gathering effect can be improved. Furthermore, the height of the lens 5 can be reduced.

[0101] <14. Other Embodiments> This technology is not limited to the embodiments described above, and can be modified in various ways without departing from its essence. For example, in this technology, two or more light-emitting devices 1 and image display devices 100 according to the above multiple embodiments or multiple modifications can be combined.

[0102] In this disclosure, the light-emitting device comprises a light-emitting element, a light-reflecting section, a light-control section, a lens, and a light-shielding section. The light-emitting element has a light-emitting surface. The light-reflecting section is disposed on the side of the light-emitting element opposite to the light-emitting surface and on the side of the light-emitting element, and reflects the light emitted from the light-emitting surface. The light-control section is disposed on the side of the light-emitting surface within the area surrounded by the light-reflecting section, and controls the wavelength of light. The lens is disposed on the side of the light-control section opposite to the light-emitting element, and focuses the light emitted from the light-emitting surface. The light-shielding section is disposed between the light-control section and the lens, has an opening that penetrates in the thickness direction and allows light to pass through, and shields the light emitted from the light-emitting surface. In a light-emitting device, light emitted from the light-emitting surface of a light-emitting element is emitted from an aperture via a light control unit, reflected by a light reflector, and emitted again from the aperture via the light control unit. This makes it possible to achieve high brightness in the emission direction. In addition, the light-emitting device can achieve high brightness in the emission direction, allowing the light-emitting diameter of the light-emitting surface of the light-emitting element and the lens diameter of the lens to be formed to be of the same size. Therefore, it is possible to achieve a narrow pitch in the light-emitting device. Therefore, in a light-emitting device and an image display device equipped with a light-emitting device, it is possible to achieve both high brightness in the emission direction and miniaturization of the pixel pitch.

[0103] <Structure of this technology> This technology has the following configuration. According to this technology with the following configuration, it is possible to provide a light-emitting device and an image display device that can achieve both high brightness in the emission direction and miniaturization of the pixel pitch. (1) A light-emitting element having a light-emitting surface, A light-reflecting portion is provided on the side of the light-emitting element opposite to the light-emitting surface and on the side of the light-emitting element, and reflects the light emitted from the light-emitting surface. A lens is disposed on the light-emitting surface side and collects the light emitted from the light-emitting surface, Disposed between the light-emitting surface and the lens, having an opening that penetrates in the thickness direction to allow light to pass through, and a light-shielding portion that blocks the light emitted from the light-emitting surface. A light-emitting device equipped with the following features. (2) The light-reflecting portion is further provided with an optical control unit disposed on the light-emitting surface side within the region surrounded by the light-reflecting portion, which controls at least one of the wavelength of light, the scattering of light, and the direction of light. The light-emitting device described in (1) above. (3) The aperture diameter of the opening is smaller than the lens diameter and the light emission diameter of the light emission surface, and larger than 10 nm. The aforementioned light emission diameter is the same as or smaller than the aforementioned lens diameter. The light-emitting device described in (1) or (2) above. (4) The light reflecting part is A first light reflecting portion is disposed on the side of the light-emitting element opposite to the light-emitting surface, The light-emitting element comprises a second light-reflecting portion disposed on the side surface of the light-emitting element, Furthermore, the light-shielding portion is provided with a third light-reflecting portion disposed on the light-emitting surface side and reflecting light. A light-emitting device according to any one of (1) to (3) above. (5) The third light reflecting portion is formed on a flat surface, a scattering surface or a curved surface. The light-emitting device described in (4) above. (6) Further comprising a second lens disposed between the light-emitting surface and the light-shielding portion, which focuses the light emitted from the light-emitting surface. A light-emitting device according to any one of (1) to (5) above. (7) The opening end face of the opening is formed on a plane perpendicular to the light-emitting surface, or on an inclined surface in which the diameter of the opening expands toward the lens. A light-emitting device according to any one of (1) to (6) above. (8) A fourth light reflecting portion that reflects light is provided on the opening end face. The light-emitting device described in (7) above. (9) A wavelength cut filter is provided between the light shielding portion and the lens. A light-emitting device as described in any one of (1) to (8) above. (10) A wavelength cut filter is provided between the light-emitting surface and the light control unit. A light-emitting device according to any one of (2) to (9) above. (11) The optical control unit is formed of an optical wavelength conversion material A light-emitting device according to any one of (2) to (10) above. (12) The light control unit is formed of a light scatterer A light-emitting device according to any one of (2) to (10) above. (13) The shape of the aperture is circular, elliptical, square, rectangular, triangular, or a polygon with five or more sides, as viewed from the lens side. A light-emitting device as described in any one of (1) to (11) above. (14) The center of the aperture of the aperture coincides with the optical axis of the light emitted from the light-emitting surface. A light-emitting device according to any one of (1) to (13) above. (15) Multiple openings are provided in the light shielding section. A light-emitting device as described in any one of (1) to (14) above. (16) One lens is provided for one of the apertures. A light-emitting device according to any one of (1) to (15) above. (17) The lens is a spherical lens, a Fresnel lens, a trapezoidal lens, or a diffractive lens. A light-emitting device according to any one of (1) to (16) above. (18) The light-emitting element is formed of an inorganic compound semiconductor or an organic semiconductor. A light-emitting device as described in any one of (1) to (17) above. (19) Equipped with multiple arranged light-emitting devices, The light-emitting device is A light-emitting element having a light-emitting surface, A light-reflecting portion is provided on the side of the light-emitting element opposite to the light-emitting surface and on the side of the light-emitting element, and reflects the light emitted from the light-emitting surface. A lens is disposed on the light-emitting surface side and collects the light emitted from the light-emitting surface, Disposed between the light-emitting surface and the lens, having an opening that penetrates in the thickness direction to allow light to pass through, and a light-shielding portion that blocks the light emitted from the light-emitting surface. An image display device equipped with the following features. (20) In each of the plurality of light-emitting devices, the array pitch of the light-emitting elements is the same as the array pitch of the lenses. The image display device described in (19) above.

[0104] This application claims priority based on Japanese Patent Application No. 2021-125300, filed with the Japan Patent Office on 30 July 2020, and all contents of that application are incorporated herein by reference.

[0105] Those skilled in the art will understand that various modifications, combinations, subcombinations, and changes can be conceived depending on design requirements and other factors, and that these fall within the scope of the attached claims and their equivalents.

Claims

1. A light-emitting element having a light-emitting surface, A light-reflecting portion is provided on the side of the light-emitting element opposite to the light-emitting surface and on the side of the light-emitting element, and reflects the light emitted from the light-emitting surface. A lens is disposed on the light-emitting surface side and collects the light emitted from the light-emitting surface, A light-shielding portion is disposed between the light-emitting surface and the lens, has an opening that penetrates in the thickness direction to allow light to pass through, and blocks the light emitted from the light-emitting surface. A light control unit is disposed on the light-emitting surface side within the region surrounded by the light-reflecting portion, and controls at least one of the wavelength of light, the scattering of light, and the direction of light. Equipped with, The aforementioned light-reflecting portion is A first light reflecting portion is disposed on the side of the light-emitting element opposite to the light-emitting surface, The light-emitting element has a second light-reflecting portion disposed on the side surface of the light-emitting element, Furthermore, the light-shielding portion has a third light-reflecting portion disposed on the light-emitting surface side and reflecting light, The light shielding portion is formed in a planar direction over the entire upper surface of the light control unit, excluding the opening, and shields light from the light control unit toward the lens. Light-emitting device.

2. The aperture diameter of the aforementioned opening is smaller than the lens diameter of the lens and the light emission diameter of the light emission surface, and larger than 10 nm. The aforementioned light emission diameter is the same as or smaller than the aforementioned lens diameter. The light-emitting device according to claim 1.

3. The third light-reflecting portion is formed on a flat, scattering, or curved surface. The light-emitting device according to claim 1.

4. The system further includes a second lens disposed between the light-emitting surface and the light-shielding portion, which focuses the light emitted from the light-emitting surface. The light-emitting device according to claim 1.

5. The opening end face of the opening is formed either perpendicular to the light-emitting surface or as an inclined surface in which the opening diameter expands toward the lens. The light-emitting device according to claim 1.

6. A fourth light-reflecting portion that reflects light is provided on the aforementioned open end face. The light-emitting device according to claim 5.

7. A wavelength cut filter is disposed between the light shielding portion and the lens. The light-emitting device according to claim 1.

8. A wavelength cut filter is disposed between the light-emitting surface and the light control unit. The light-emitting device according to claim 1.

9. The optical control unit is formed of an optical wavelength conversion material. The light-emitting device according to claim 1.

10. The light control unit is formed by a light scattering material. The light-emitting device according to claim 1.

11. The aperture shape of the aforementioned opening is circular, elliptical, square, rectangular, triangular, or a polygon with five or more sides, as viewed from the lens side. The light-emitting device according to claim 1.

12. The center of the aperture of the aperture coincides with the optical axis of the light emitted from the light-emitting surface. The light-emitting device according to claim 1.

13. Multiple openings are provided in the light-shielding section. The light-emitting device according to claim 1.

14. One lens is provided for one of the apertures. The light-emitting device according to claim 1.

15. The aforementioned lens is a spherical lens, a Fresnel lens, a trapezoidal lens, or a diffractive lens. The light-emitting device according to claim 1.

16. The light-emitting element is formed from an inorganic compound semiconductor or an organic semiconductor. The light-emitting device according to claim 1.

17. Equipped with multiple arranged light-emitting devices, The light-emitting device is A light-emitting element having a light-emitting surface, A light-reflecting portion is provided on the side of the light-emitting element opposite to the light-emitting surface and on the side of the light-emitting element, and reflects the light emitted from the light-emitting surface. A lens is disposed on the light-emitting surface side and collects the light emitted from the light-emitting surface, A light-shielding portion is disposed between the light-emitting surface and the lens, has an opening that penetrates in the thickness direction to allow light to pass through, and blocks the light emitted from the light-emitting surface. A light control unit is disposed on the light-emitting surface side within the region surrounded by the light-reflecting portion, and controls at least one of the wavelength of light, the scattering of light, and the direction of light. Having The aforementioned light-reflecting portion is A first light reflecting portion is disposed on the side of the light-emitting element opposite to the light-emitting surface, The light-emitting element has a second light-reflecting portion disposed on the side surface of the light-emitting element, Furthermore, the light-shielding portion has a third light-reflecting portion disposed on the light-emitting surface side and reflecting light, The light shielding portion is formed in a planar direction over the entire upper surface of the light control unit, excluding the opening, and shields light from the light control unit toward the lens. Image display device.

18. In each of the multiple light-emitting devices, the array pitch of the light-emitting elements is the same as the array pitch of the lenses. The image display device according to claim 17.

Images