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

Light-emitting device and image display device

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

[0002] Patent Document 1 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. A wavelength conversion section and a converging section (lens) are sequentially arranged on the light-emitting side of the micro-light-emitting element. The micro-light-emitting elements form pixels. The converging section converges light to display the pixels. A display device is constructed with the display element. Display elements and display devices configured in this manner are attracting attention as next-generation, high-brightness, compact displays. For example, they are expected to be applied to head-mounted displays (HMDs) such as augmented reality (AR) glasses and virtual reality (VR) goggles.

[0003] JP 2019-152851 A

[0004] In the display element and display device disclosed in the aforementioned Patent Document 1, a self-luminous device is used as a surface light source that isotropically scatters light in a micro-light-emitting element. The diameter of the wavelength conversion section on the light-emitting surface side and the diameter of the converging section are configured to be approximately equal. This makes it difficult to sufficiently focus light in the direction of emission by the converging section. On the other hand, to increase the brightness in the direction of emission, it is necessary to expand the pixel pitch, reduce the emission area of ​​the wavelength conversion section, or increase the diameter of the converging section.

[0005] For this reason, it is desirable for light emitting devices and image display devices to achieve both high brightness in the emission direction and a smaller 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 portion arranged on the side opposite the light emitting surface of the light emitting element and on the side of the light emitting element to reflect light emitted from the light emitting surface, a lens arranged on the side of the light emitting surface to collect light emitted from the light emitting surface, and a light shielding portion arranged between the light emitting surface and the lens, having an opening penetrating in the thickness direction to allow light to pass through, and shielding 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 light-emitting devices arranged in an array, each of which comprises a light-emitting element having a light-emitting surface, a light-reflecting portion arranged on the side opposite 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 arranged on the light-emitting surface side, which collects light emitted from the light-emitting surface, and a light-shielding portion arranged between the light-emitting surface and the lens, which has an opening penetrating in the thickness direction to allow light to pass through, and which shields light emitted from the light-emitting surface.

[0008] 1 is a cross-sectional view of a main portion of a light-emitting device and an image display device according to a first embodiment of the present disclosure; FIG. 2 is a plan view of a main portion of the light-emitting device and the image display device shown in FIG. 1; FIG. 3 is a model diagram illustrating a detailed structure of the light-emitting device shown in FIGS. 1 and 2; FIG. 4 is a graph showing the relationship between the opening diameter of an opening provided in the light-emitting device shown in FIG. 3 and the light-capturing angle; FIG. 5 is a cross-sectional view of a main portion of a light-emitting device according to the first embodiment, which is the subject of luminance measurement; FIG. 6 is a cross-sectional view of a main portion of a light-emitting device according to a first comparative example, which is the subject of luminance measurement; FIG. 7 is a cross-sectional view of a main portion of a light-emitting device according to a second comparative example, which is the subject of luminance measurement; FIG. 8 is a graph showing the results of luminance measurement of 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; FIG. 9 is a cross-sectional view of a first process corresponding to FIG. 1 , illustrating a method for manufacturing a light-emitting device and an image display device according to a second embodiment of the present disclosure; FIG. 10 is a cross-sectional view of a main portion of a light-emitting device according to a third embodiment of the present disclosure, which corresponds to FIG. 1; FIG. 11 is a cross-sectional view of a main portion of a light-emitting device according to a fourth embodiment of the present disclosure, which corresponds to FIG. 1; FIG. 12 is a cross-sectional view of a main portion of a light-emitting device according to a fifth embodiment of the present disclosure, which corresponds to FIG. 1; 16A ; FIG. 16B is a cross-sectional view of a main portion of a light-emitting device according to a sixth embodiment of the present disclosure, corresponding to FIG. 1 ; FIG. 16C is a cross-sectional view of a main portion of a light-emitting device according to a seventh embodiment of the present disclosure, corresponding to FIG. 1 ; FIG. 16D is a cross-sectional view of a main portion of a light-emitting device according to an eighth embodiment of the present disclosure, corresponding to FIG. 1 ; FIG. 16E is a plan view of a main portion of a light-emitting device according to a ninth embodiment of the present disclosure, corresponding to FIG. 2 ; FIG. 16F is a plan view of a main portion of a light-emitting device according to a first modified example of the ninth embodiment, corresponding to FIG. 16A ; FIG. 16G is a plan view of a main portion of a light-emitting device according to a second modified example of the ninth embodiment, corresponding to FIG. 16A ; FIG. 16H is a plan view of a main portion of a light-emitting device according to a third modified example of the ninth embodiment, corresponding to FIG. 16A ; FIG. 16H is a cross-sectional view of a main portion of a light-emitting device and an image display device according to a tenth embodiment of the present disclosure, corresponding to FIG. 1 ; FIG. 16G is a cross-sectional view of a main portion of a light-emitting device and an image display device according to an eleventh embodiment of the present disclosure, corresponding to FIG. 1 ; FIG. 16H is a plan view of a main portion of a light-emitting device and an image display device according to the eleventh embodiment, corresponding to FIG. 2 ; FIG. 16I is a cross-sectional view of a main portion of a light-emitting device and an image display device according to a twelfth embodiment of the present disclosure, corresponding to FIG. 1 ; FIG. 16I is a schematic cross-sectional view of a main portion of a light-emitting device according to a thir

[0009] 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 will describe 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 will describe a modified method of manufacturing the light-emitting device and the image display device according to the first embodiment. 3. Third Embodiment The third embodiment will describe a first modified light-reflecting section in the light-emitting device and the image display device according to the first embodiment. 4. Fourth Embodiment The fourth embodiment will describe a second modified light-reflecting section in the light-emitting device and the image display device according to the first embodiment. 5. Fifth Embodiment The fifth embodiment will describe a first modified light control section in the light-emitting device and the image display device according to the first embodiment. 6. Sixth Embodiment The sixth embodiment will describe a first modified light-shielding section in the light-emitting device and the image display device according to the first embodiment. 7. Seventh Embodiment The seventh embodiment will describe a second modified light-shielding section in the light-emitting device and the image display device according to the first embodiment. 8. Eighth Embodiment The eighth embodiment describes a second modified example 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 modified example of the light shielding unit in the light emitting device and image display device according to the first embodiment. Here, multiple variations of the third modified example are described. 10. Tenth Embodiment The tenth embodiment describes a third modified example 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 modified example of the light shielding unit in the light emitting device and image display device according to the first embodiment. 12. Twelfth Embodiment The twelfth embodiment describes a first modified example of the lens in the light emitting device and image display device according to the first embodiment. 13. Thirteenth Embodiment The thirteenth embodiment describes a second modified example of the lens in the light emitting device and image display device according to the first embodiment. Here, multiple variations of the second modified example are described. 14. Other Embodiments

[0010] 1. First Embodiment A light emitting device 1 and an image display device 100 according to a first embodiment of the present disclosure will be described with reference to FIGS.

[0011] Here, the arrow X direction shown as appropriate in the figures indicates one planar direction of the light-emitting device 1 and the image display device 100 placed on a flat surface for convenience. The arrow Y direction indicates another planar direction perpendicular to the arrow X direction. The arrow Z direction indicates an upward direction perpendicular to the arrow X direction and the arrow Y direction. In other words, the arrow X direction, the arrow Y direction, and the arrow Z direction exactly correspond to the X-axis direction, the Y-axis direction, and the Z-axis direction, respectively, of a three-dimensional coordinate system. Note that these directions are shown to facilitate understanding of the explanation and do not limit the directions of the present technology.

[0012] [Configuration of the Light-Emitting Device 1 and the Image Display Device 100] (1) Schematic Overall Configuration of the Light-Emitting Device 1 and the Image Display Device 100 Fig. 1 shows an example of a longitudinal cross-sectional configuration of the light-emitting device 1 and the image display device 100. Fig. 2 shows an example of a planar configuration of the light-emitting device 1 and the image display device 100. The cross-sectional configuration shown in Fig. 1 is a cross-sectional configuration cut along the A-A cutting line shown in Fig. 2. Also, some of the components shown in Fig. 1, specifically the lens 5, are omitted in Fig. 2.

[0013] The image display device 100 according to the first embodiment includes a plurality of light emitting devices 1 arranged in both the direction of the arrow X and the direction of the arrow Y. The light emitting devices 1 arranged in the direction of the arrow X are offset from other light emitting devices 1 arranged in the direction of the arrow X adjacent to each other in the direction of the arrow Y by an arrangement pitch that is half the arrangement pitch of the light emitting devices 1.

[0014] The light emitting device 1 is disposed on a substrate 10. The light emitting device 1 includes a light emitting element 2, a light reflecting section 3, a light control section 4, a lens 5, and a light blocking section 6 as main components.

[0015] (2) Structure of the Substrate 10 The substrate 10 is a common substrate for the plurality of light emitting devices 1 arranged, and is also a substrate for the image display device 100. A drive circuit (not shown) that drives the light emitting device 1 is disposed on the substrate 10. The substrate 10 is formed of, 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-luminous light source is used for the light-emitting element 2. The light-emitting element 2 is formed in a circular shape when viewed from the direction of the arrow Z (hereinafter simply referred to as "plan view"), and is formed in layers when viewed from the direction of the arrow Y (hereinafter simply referred to as "side view"). The upper surface of the light-emitting element 2 in the direction of the 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 the arrow X or the direction of the arrow Y (hereinafter simply referred to as "plane"), the light-emitting diameter D (see FIGS. 1 and 3) of the light-emitting surface 2A is the diameter dimension of the area from which light is effectively emitted.

[0017] Here, the light-emitting element 2 is formed, for example, by an LED (Light Emitting Diode). The LED is formed by a III-V group compound semiconductor (inorganic compound semiconductor). The light-emitting element 2 may also be a LASER (Light Amplification by Stimulated Emission of Radiation) formed by a compound semiconductor. The light-emitting element 2 may also be an organic EL (Electro-Luminescence) formed by an organic semiconductor.

[0018] (4) Configuration of the Light Reflecting Unit 3 The light reflecting unit 3 includes at least a first light reflecting unit 3A and a second light reflecting unit 3B. The first light reflecting unit 3A is disposed on a flat surface opposite the light emitting surface 2A of the light emitting element 2, facing the lower surface of the light emitting element 2. The first light reflecting unit 3A reflects light emitted from the light emitting surface 2A upward. The second light reflecting unit 3B surrounds the periphery of the side surface of the light emitting element 2 and extends beyond the first light reflecting unit 3A beyond the light emitting element 2. The second light reflecting unit 3B reflects light emitted from the light emitting surface 2A upward. In the first embodiment, the second light reflecting unit 3B is disposed perpendicular to the first light reflecting unit 3A. The second light reflecting portion 3B only needs to have the function of reflecting light upward, and therefore, for example, the portion facing the first light reflecting portion 3B in the planar direction may be formed by an inclined surface that widens (expands in diameter) from the first light reflecting portion 3A in the upward direction.

[0019] In the first embodiment, the light reflecting portion 3 further includes a third light reflecting portion 3C. The third light reflecting portion 3C is disposed on the light emitting surface 2A side of the light shielding portion 6, which is disposed opposite the light emitting surface 2A of the light emitting element 2. The third light reflecting portion 3C is formed as a flat surface. The third light reflecting portion 3C reflects light, etc. emitted from the light emitting surface 2A toward the light emitting surface 2A side.

[0020] The first light reflecting portion 3A, the second light reflecting portion 3B, and the third light reflecting portion 3C of the light reflecting portion 3 may be connected to each other, or may be separated in part or in whole. Also, for example, a part of the second light reflecting portion 3B, specifically the boundary portion between the light emitting element 2 and the light control portion 4, may be separated.

[0021] Each of the first light reflecting portion 3A, the second light reflecting portion 3B, and the third light reflecting portion 3C is formed of a metal body with excellent light reflecting properties, such as aluminum (Al). Each of the first light reflecting portion 3A, the second light reflecting portion 3B, and the third light reflecting portion 3C may be formed entirely of a metal body, or the base portion may be formed of a resin body, and the metal body may be formed on the surface of the resin body. Furthermore, Ag, Au, Pt, Cu, Ti, and the like can also be practically used as metal bodies with excellent light reflecting properties.

[0022] (5) Configuration of the Light Control Unit 4 The light control unit 4 is disposed on the light-emitting surface 2A side of the light-emitting element 2 within an area surrounded by the first light-reflecting portion 3A, the second light-reflecting portion 3B, and the third light-reflecting portion 3C of the light-reflecting unit 3. In the first embodiment, the light control unit 4 is formed of a light wavelength conversion material that controls (converts) the wavelength of light. That is, the light control unit 4 absorbs light emitted from the light-emitting surface 2A and converts the wavelength of the absorbed light. 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. Here, in FIG. 1 , the light emitted from the light-emitting surface 2A of the light-emitting element 2 is indicated by a "solid line." Furthermore, light whose wavelength has been controlled by the light control unit 4, i.e., fluorescence excitation light, is indicated by a "broken line with an arrow." Furthermore, for convenience, a "star symbol" is indicated at the connection between the "solid line" and the "broken line with an arrow" to indicate conversion from light to fluorescence excitation light. The light wavelength conversion material may be, for example, an inorganic phosphor, an organic phosphor, or a quantum dot.

[0023] (6) Structure of Lens 5 The lens 5 is disposed on the opposite side of the light control unit 4 from the light emitting element 2. The center position of the lens 5 is aligned with the optical axis Lc of the light emitted from the light emitting surface 2A. The lens 5 is an optical spherical lens that protrudes upward. The lens 5 is made of, for example, a silicon oxide film (SiO ２ The lens 5 condenses the light emitted from the light emitting surface 2A and having its wavelength controlled through the light control unit 4. The lens 5 may be made of an inorganic material such as silicon nitride (SiN) or an organic material such as a transparent resin.

[0024] The lens diameter Ld in the plane of the lens 5 having the radius of curvature R is set to be equal to or larger than the light-emitting diameter D of the light-emitting element 2 (see FIG. 3). For example, the lens diameter Ld of the lens 5 is set to be larger than the light-emitting diameter D by the thickness of the second light-reflecting portion 3B that faces the lens 5 in the planar direction of the light-reflecting portion 3. With this configuration, in the image display device 100, the arrangement pitch of the light-emitting devices 1 and the arrangement pitch of the lenses 5 can be made to match.

[0025] (7) Configuration of Light Shielding Unit 6 The light shielding unit 6 is disposed between the light control unit 4 and the lens 5 and is formed in a plate shape. The light shielding unit 6 is provided with an opening 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 portion 6 is formed in the planar direction over the entire upper surface of the light control portion 4, excluding the opening 6A, and shields light traveling from the light control portion 4 toward the lens 5. As described above, the third light reflecting portion 3C is disposed on the light-emitting element 2 side of the light shielding portion 6, and light traveling toward the light shielding portion 6 is reflected by the third light reflecting portion 3C toward the light-emitting surface 2A. Since the light shielding portion 6 includes the third light reflecting portion 3C, it is formed of aluminum. The light shielding portion 6 may also be formed of a resin body that does not transmit light, such as a resin body containing black ink. Furthermore, the light shielding portion 6 may be formed, for example, by using a metal body with a lower reflectivity than aluminum as a base, and a metal body with a higher reflectivity may be formed on the surface of this metal body.

[0027] One opening 6A is provided for each light-emitting element 2. In the first embodiment, the opening 6A is circular in plan view, similar to the shape of the light-emitting surface 2A. The opening 6A has an opening diameter A smaller than the lens diameter Ld and the light-emitting diameter D (see FIG. 3). The opening diameter A is uniform across the thickness of the light-shielding portion 6. Therefore, the opening end faces of the opening 6A are formed vertically. The opening diameter A is equal to or larger than the light-condensing diameter (spot diameter) Ls of the lens 5 when light is irradiated from above the lens 5. For example, the opening diameter A is greater than 10 nm. The center position of the opening 6A is aligned with the optical axis Lc. The opening 6A passes light emitted from the light-emitting surface 2A and controlled by the light control unit 4. The opening 6A also passes light emitted from the light-emitting surface 2A, reflected by the light reflecting unit 3, and controlled by the light control unit 4.

[0028] (8) Relationship Between Aperture Diameter A and Acceptance Angle θ Figure 3 shows a model illustrating the detailed longitudinal cross-sectional configuration of the light-emitting device 1. Taking the acceptance angle θ when light is irradiated from the light-emitting device 1 onto the projection surface 7 of the optical system as a reference, it is desirable to set the radius of curvature R of the lens 5 to half the light-emitting diameter D of the light-emitting element 2 (R = D / 2). The acceptance angle θ is the angle of spread of the emitted light relative to a perpendicular line from the projection surface 7. Furthermore, the lens diameter Ld is set to the same dimension as the light-emitting diameter D (Ls = D). For convenience, in Figure 3, the diameter of the end face of the light control unit 4 facing the lens 5 is shown as the light-emitting diameter D. This configuration improves the light-collection efficiency from the light-emitting device 1 to the projection surface 7 and achieves a low-profile structure that reduces the height of the light-emitting device 1 in the direction of arrow Z. Furthermore, the portion where light set at the acceptance angle θ is concentrated on the surface of the light control unit 4 through the lens 5 (the portion where the concentrated light diameter Ls is generated) is defined as the light-emitting position. The height T is defined as the distance from the light-emitting position to the apex of the lens 5.

[0029] FIG. 4 shows the relationship between the acceptance angle θ and magnification. The horizontal axis represents the acceptance angle θ, and the vertical axis represents the magnification. Magnification is expressed by the following formula: Aperture diameter A = Magnification × Light-emitting diameter D. Data D1 shown in FIG. 4 is "R = D / 2." As mentioned above, "R" is the radius of curvature of the lens 5. "D" is the light-emitting diameter of the light-emitting surface 2A. Data D2 is "R = D / 2 × 1.2." Data D3 is "R = D / 2 × 1.6." As is clear from FIG. 4, as the radius of curvature R increases, the magnification tends to decrease. Furthermore, as the magnification decreases, the acceptance angle θ tends to decrease. Furthermore, as the opening diameter A of the opening 6A of the light-shielding portion 6 becomes smaller, the acceptance angle θ tends to become smaller.

[0030] (9) Regarding the Brightness of the Light-Emitting Device 1 Fig. 5A shows the longitudinal cross-sectional structure of the light-emitting device 1 according to the first embodiment. Fig. 5B shows the longitudinal cross-sectional structure of the light-emitting device 1A according to the first comparative example. The light-emitting device 1A does not have the components of the light-shielding portion 6 (and the third light-reflecting portion 3C), the opening 6A, and the lens 5 of the light-emitting device 1. Fig. 5C shows the longitudinal cross-sectional structure of the light-emitting device 1B according to the second comparative example. The light-emitting device 1B has the components of the lens 5 of the light-emitting device 1, but does not have the components of the light-shielding portion 6 (and the third light-reflecting portion 3C) and the opening 6A.

[0031] 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] FIG. 6 shows the measurement results when the capture angle θ is set to approximately ±10°. Data D5 is the luminance of the light-emitting device 1A according to the first comparative example. Here, the luminance of the light-emitting device 1A is set to the reference value of "100%". Data D6 is the luminance of the light-emitting device 1B according to the second comparative example. Although the light-emitting device 1B is provided with a lens 5, there is almost no change in the luminance of the light-emitting device 1B compared to the luminance of the light-emitting device 1A. Data D4 is the luminance of the light-emitting device 1 according to the first embodiment. The luminance of the light-emitting device 1 is significantly increased compared to both the luminance of the light-emitting device 1A and the luminance of the light-emitting device 1B. The increase in luminance reaches approximately 50%.

[0033] [Method of Manufacturing the Light-Emitting Device 1 and the Image Display Device 100] Next, a brief description will be given of a method of manufacturing the light-emitting device 1 and the image display device 100. Figures 7 and 8 show cross sections of processes illustrating a method of manufacturing the light-emitting device 1 and the image display device 100 according to the first embodiment.

[0034] First, a light reflecting section 3 including a first light reflecting section 3A and a second light reflecting section 3B is formed (see FIG. 7). A light emitting element 2 and a light control section 4 are sequentially formed in the light reflecting section 3 (see FIG. 7). Next, a light shielding section 6 is formed on the light control section 4, and an opening 6A is formed in the light shielding section 6 (see FIG. 7). A lens forming layer 5A is formed on the light shielding section 6 including the opening 6A (see FIG. 7). The lens forming layer 5A may be made of, for example, SiO ２ 7, the surface portion of the lens formation layer 5A is removed in the region between the light emitting devices 1. By this removal, grooves 5B are generated in the surface portion of the lens formation layer 5A. Photolithography and etching techniques are used for the removal.

[0035] 8, the lens forming layer 5A is reflowed, and lenses 5 having a spherical shape are formed from the lens forming layer 5A. When this series of manufacturing steps is completed, the light emitting device 1 and the image display device 100 in which a plurality of the light emitting devices 1 are arranged are completed.

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

[0037] [Effects] As shown in Figures 1 and 2, the light-emitting device 1 according to the first embodiment includes 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 unit 3 is disposed on the side opposite the light-emitting surface 2A of the light-emitting element 2 and on a side of the light-emitting element 2, and reflects light emitted from the light-emitting surface 2A. The light control unit 4 is disposed on the side of the light-emitting element 2 that is surrounded by the light-reflecting unit 3, and controls the wavelength of the light. The lens 5 is disposed on the side of the light control unit 4 opposite the light-emitting element 2, and focuses the light emitted from the light-emitting surface 2A. The light-shielding unit 6 is disposed 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, and blocks 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 through the opening 6A via the light control unit 4, further reflected by the light reflector 3, and then emitted through the opening 6A via the light control unit 4. Therefore, as shown in FIG. 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 (the end face dimension of the light control unit 4) and the lens diameter Ld of the lens 5 can be formed to be equivalent in size. This allows the light-emitting device 1 to have a narrow pitch. Therefore, the light-emitting device 1 and the image display device 100 including the light-emitting device 1 can achieve both high brightness in the emission direction and a small pixel pitch.

[0038] Furthermore, the light-emitting device 1 can achieve high brightness, enabling low-power operation. In addition, as shown in FIG. 1, the light-emitting device 1 is equipped with a light control unit 4. This allows the fluorescent excitation light to be confined in the light control unit 4 to control the wavelength of the light, thereby reducing color mixing of the final emitted light. Furthermore, in the light-emitting device 1, the light control unit 4 is surrounded by the light reflecting unit 3, allowing the effective optical path length to be lengthened by reflection. Therefore, the light-emitting device 1 and the image display device 100 can achieve a low profile for the light control unit 4.

[0039] 1 and 3, in the light-emitting device 1, the opening diameter A of the opening 6A is smaller than the lens diameter Ld of the lens 5 and the light-emitting diameter D of the light-emitting surface 2A, and is larger than the light-collecting diameter Ls of the lens 5 at the light-emitting position. Therefore, as shown in FIG. 4, the capture angle θ can be made small.

[0040] 1 and 3, in the light emitting device 1, 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 arrangement pitch of the light emitting elements 2 can be made to match or approximate the arrangement pitch of the lenses 5, thereby realizing a narrower pitch in the light emitting device 1.

[0041] 1, the light reflecting portion 3 of the light emitting device 1 includes a third light reflecting portion 3C that reflects light. The third light reflecting portion 3C is disposed on the light emitting surface 2A side of the light shielding portion 6. Therefore, in the light emitting device 1, the light reflected by the third light reflecting portion 3C and emitted from the opening 6A via the light control portion 4 is added, thereby achieving 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 by 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 the present disclosure will be described. In the second embodiment and the following embodiments, components that are the same as or substantially the same as components of the light emitting device 1 and the image display device 100 according to the first embodiment are denoted by the same reference numerals, and duplicated descriptions will be omitted.

[0044] [Method of Manufacturing Light-Emitting Device 1 and Image Display Device 100] The second embodiment describes a modified example of the method of manufacturing the light-emitting device 1 and image display device 100 according to the first embodiment. Figure 9 shows cross sections of processes illustrating the method of manufacturing the light-emitting device 1 and image display device 100 according to the second embodiment.

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

[0046] In the manufacturing method of the light emitting device 1 and the 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 the lens 5 can be performed independently under optimal conditions, thereby improving the manufacturing yield.

[0047] [Modification] In the manufacturing method of the light-emitting device 1 and the image display device 100 according to the second embodiment, the lens 5 can be manufactured using an imprint lithography technique that transfers the lens shape of a mold to a lens formation layer made of glass, resin, etc. In this case, similar to the manufacturing method of the light-emitting device 1 and the image display device 100 according to the second embodiment, the lens 5 is attached after being manufactured.

[0048] 3. Third Embodiment Next, a light emitting device 1 and an image display device 100 according to a third embodiment of the present disclosure will be described. Fig. 10 shows a vertical cross-sectional configuration of the light emitting device 1 according to the third embodiment. Note that in the third to ninth embodiments, one light emitting device 1 will be described, and a 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 includes a third light reflecting portion 3D instead of the third light reflecting portion 3C of the light-emitting device 1 according to the first embodiment. Similar to the third light reflecting portion 3C, the third light reflecting portion 3D is disposed on the light-shielding portion 6 on the side of the light-emitting element 2. The third light reflecting portion 3D is formed as a scattering surface.

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

[0051] [Effects] In the light emitting device 1 according to the third embodiment, the light reflecting portion 3 is provided with the third light reflecting portion 3D, so that light that is not directed toward the opening 6A can be scattered and efficiently focused toward the opening 6A, thereby achieving even higher brightness in the emission direction.

[0052] Furthermore, in the third light reflecting section 3D, the same optical effect as when a scatterer is contained in the light control section 4 can be expected, and therefore the effective optical path length in the light control section 4 can be increased. As a result, the height of the light control section 4 can be reduced. Furthermore, color mixing can be reduced. Furthermore, when a scatterer is contained in the light control section 4, the content of the scatterer in the light control section 4 can be reduced. As a result, variation in the optical properties of the light control section 4 can be reduced, and optical reliability can be improved.

[0053] 4. Fourth Embodiment Next, a light emitting device 1 according to a fourth embodiment of the present disclosure will be described. [Configuration of Light Emitting Device 1] Fig. 11 shows a longitudinal cross-sectional configuration of the light emitting device 1 according to the fourth embodiment. The light emitting device 1 according to the fourth embodiment includes a third light reflecting portion 3E in the light reflecting portion 3, instead of the third light reflecting portion 3C of the light emitting device 1 according to the first embodiment. The third light reflecting portion 3E, like the third light reflecting portion 3C, is disposed on the light emitting element 2 side of the light shielding portion 6. The third light reflecting portion 3E is formed on a curved surface that is recessed toward the lens 5.

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

[0055] [Effects] The light emitting device 1 according to the fourth embodiment can achieve the same effects as those achieved by the light emitting device 1 according to the third embodiment. Furthermore, since the light emitting device 1 includes the third light reflecting portion 3E, light that is not directed toward the opening 6A can be reflected by the third light reflecting portion 3E and efficiently focused toward the opening 6A. This makes it possible to achieve even higher brightness in the emission direction.

[0056] 5. Fifth Embodiment Next, a light emitting device 1 according to a fifth embodiment of the present disclosure will be described. [Configuration of Light Emitting Device 1] Fig. 12 shows a longitudinal 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 recessed toward the light emitting surface 2A, and focuses light emitted from the light emitting surface 2A. The second lens 8 can be formed using, for example, the same material as the lens 5.

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

[0058] [Effects] The light emitting device 1 according to the fifth embodiment can achieve the same effects as those achieved by the light emitting device 1 according to the third embodiment. Furthermore, since the light emitting device 1 according to the fifth embodiment is provided with the second lens 8, it can efficiently focus the light emitted from the light emitting surface 2A toward the opening 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 a sixth embodiment of the present disclosure will be described. [Configuration of Light-Emitting Device 1] Fig. 13 shows a longitudinal cross-sectional configuration of a light-emitting device 1 according to the sixth embodiment. The light-emitting device 1 according to the sixth embodiment includes an opening 6C in the light-shielding portion 6 instead of the opening 6A of the light-emitting device 1 according to the first embodiment. The opening 6C is formed on an inclined surface such that the opening diameter A increases from the light control portion 4 toward the lens 5. In other words, the opening end surface of the opening 6C is formed on an inclined surface. A fourth light reflecting portion 3F is disposed on the inclined surface of the opening 6C. When a metal body with high reflectivity is used for the light-shielding portion 6, the inclined surface of the opening 6C is formed as the fourth light reflecting portion 3F. When a material with low reflectivity is used for the light-shielding portion 6, a fourth light reflecting portion 3F with high reflectivity is separately formed on the inclined surface of the opening 6C.

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

[0061] [Effects] The light emitting device 1 according to the sixth embodiment can achieve the same effects as those achieved by the light emitting device 1 according to the first embodiment. Furthermore, the light emitting device 1 according to the sixth embodiment includes an opening 6C whose diameter increases toward the lens 5. The opening 6C is provided with a fourth light reflecting portion 3F. Therefore, the fourth light reflecting portion 3F of the opening 6C can focus high-angle light toward the front in the emission direction. This can further improve the brightness on the front side.

[0062] 7. Seventh Embodiment Next, a light emitting device 1 according to a seventh embodiment of the present disclosure will be described. [Configuration of Light Emitting Device 1] Fig. 14 shows a 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 includes a wavelength cut filter 9A between the light shielding portion 6 and the lens 5 in the light emitting device 1 according to the first embodiment. Note that the wavelength cut filter 9A may be located below the light shielding portion 6.

[0063] The wavelength cut filter 9A is formed as a long-pass type edge filter. Although the detailed configuration is not shown, the wavelength cut filter 9A is made of, for example, a high refractive index material (for example, TiO ２ ) and a low refractive index material (e.g., SiO ２ The wavelength cut filter 9A is formed of a multilayer film (for example, (0.5L, 1H, 0.5L) × 10 layers) formed by laminating the wavelength cut filter 9A and the excitation light whose wavelength is not controlled by the light control unit 4.

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

[0065] [Operational Effects] The light emitting device 1 according to the seventh embodiment can provide the same operational effects as those provided by the light emitting device 1 according to the first embodiment.

[0066] Furthermore, the light emitting device 1 according to the seventh embodiment is provided with the wavelength cut filter 9A, which can reduce color mixing by reflecting only excitation light whose wavelength is not controlled in the light control unit 4. Furthermore, the effective optical path length in the light control unit 4 can be increased, which can reduce the height of the light control unit 4.

[0067] 8. Eighth Embodiment Next, a light emitting device 1 according to an eighth embodiment of the present disclosure will be described. [Configuration of Light Emitting Device 1] Fig. 15 shows a longitudinal cross-sectional configuration of the light emitting device 1 according to the eighth embodiment. The light emitting device 1 according to the eighth embodiment includes a wavelength cut filter 9B between the light emitting element 2 and the light control unit 4 in the light emitting device 1 according to the first embodiment.

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

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

[0070] [Operational Effects] The light emitting device 1 according to the eighth embodiment can provide the same operational effects as those provided by the light emitting device 1 according to the first embodiment.

[0071] Furthermore, since the light emitting device 1 according to the eighth embodiment is provided with the wavelength cut filter 9B, it is possible to reflect only the fluorescent excitation light in the light control unit 4 and increase the optical path length of the light control unit 4. As a result, it is possible to reduce the height of the light control unit 4.

[0072] 9. Ninth Embodiment Next, a light emitting device 1 according to a ninth embodiment of the present disclosure will be described. [Configuration of Light Emitting Device 1] Fig. 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 opening 6D is arranged in the light shielding portion 6. The opening 6D is formed in an elliptical shape with the major axis in the direction of arrow X in a plan view. In other words, the opening 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 Fig. 3) is elliptical.

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

[0074] [Operational Effects] The light emitting device 1 according to the ninth embodiment can provide the same operational effects as those provided by the light emitting device 1 according to the first embodiment.

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

[0076] [First Modification] Fig. 16B shows the planar configuration of a light-emitting device 1 according to a first modification of the ninth embodiment. In the light-emitting device 1 according to the first modification, an opening 6E is provided in the light-shielding portion 6. In a plan view, the opening 6E is formed in a square shape with the same length sides in the directions of arrows X and Y. The shape of the emitted light on the projection surface 7 (see Fig. 3) is square. As with the light-emitting device 1 according to the ninth embodiment, when it is desired to increase the brightness of emitted light in a specific range and restrict emitted light in a specific range, it is preferable to use a combination of cylindrical lenses as the lens 5, for example.

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

[0078] The light emitting device 1 according to the first modification can achieve the same effects as those achieved by the light emitting device 1 according to the ninth embodiment.

[0079] [Second Modification] Fig. 16C shows a planar configuration of a light-emitting device 1 according to a second modification of the ninth embodiment. In the light-emitting device 1 according to the second modification, an opening 6F is provided in the light-shielding portion 6. In a plan view, the opening 6F is formed in a rectangular shape with a long side in the direction of arrow X and a short side in the direction of arrow Y. The shape of the emitted light on the projection surface 7 (see Fig. 3) is rectangular.

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

[0081] The light emitting device 1 according to the second modification can achieve the same effects as those achieved by the light emitting device 1 according to the ninth embodiment.

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

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

[0084] The light emitting device 1 according to the third modification can achieve the same effects as those achieved by the light emitting device 1 according to the ninth embodiment.

[0085] 10. Tenth Embodiment Next, a light emitting device 1 and an image display device 100 according to a tenth embodiment of the present disclosure will be described. [Configuration of Light Emitting Device 1] Fig. 17 shows a longitudinal cross-sectional configuration of a light emitting device 1 and an image display device 100 according to the tenth embodiment. In the light emitting device 1 according to the tenth embodiment, a light control unit 40 is provided instead of the light control unit 4 of the light emitting device 1 according to the first embodiment. The light control unit 40 is formed of a light scatterer that controls scattering of light. The light scatterer is formed of a color conversion material. Specifically, a red conversion material, a green conversion material, or a blue conversion material is used.

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

[0087] [Operational Effects] The light emitting device 1 according to the tenth embodiment can provide the same operational effects as those provided by the light emitting device 1 according to the first embodiment.

[0088] 11. Eleventh embodiment Next, a light emitting device 1 and an image display device 100 according to an eleventh embodiment of the present disclosure will be described. [Configuration of light emitting device 1] Fig. 18 shows a longitudinal cross-sectional configuration of the light emitting device 1 and the image display device 100 according to the eleventh embodiment. Fig. 19 shows a planar configuration of the light emitting device 1 and the image display device 100 shown in Fig. 18.

[0089] In the light-emitting device 1 according to the eleventh embodiment, a light control unit 4 is disposed in one light reflecting unit 3 composed of a first light reflecting unit 3A and a second light reflecting unit 3B, and a plurality of openings 6A are disposed in the light shielding unit 6. One light-emitting element 2 is disposed for each opening 6A. Although the number of openings 6A is not limited, in the eleventh embodiment, six openings 6A and six light-emitting elements 2 are disposed in one light reflecting unit 3. A fine microlens array 50 is disposed on the light shielding unit 6. In the microlens array 50, lenses are disposed in correspondence with the positions of the openings 6A.

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

[0091] [Effects] The light emitting device 1 according to the eleventh embodiment can achieve the effect of realizing high brightness in the emission direction, similar to the effect obtained by the light emitting device 1 according to the first embodiment.

[0092] 12. Twelfth embodiment Next, a light emitting device 1 and an image display device 100 according to a twelfth embodiment of the present disclosure will be described. [Configuration of light emitting device 1] Fig. 20 shows a longitudinal 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 disposed above the light shielding portion 6 via a gap 11. The light emitting side of the opposing lens 51 is formed as a flat surface.

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

[0095] [Effects] The light emitting device 1 according to the twelfth embodiment can achieve the same effects as those achieved by the light emitting device 1 according to the first embodiment. Furthermore, in the light emitting device 1, the light emitting surface side of the opposing lens 51 is configured to be flat. This provides mechanical advantages, such as allowing a filter or film to be attached to the opposing lens 51.

[0096] 13. Thirteenth embodiment Next, a light emitting device 1 and an image display device 100 according to a thirteenth embodiment of the present disclosure will be described. [Configuration of light emitting device 1] Fig. 21 shows a longitudinal cross-sectional configuration of a lens 5 of the light emitting device 1 and the image display device 100 according to the thirteenth embodiment.

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

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

[0099] [Effects] The light-emitting device 1 and image display device 100 according to the thirteenth embodiment can achieve the same effects as those achieved by the light-emitting device 1 and image display device 100 according to the first embodiment. Furthermore, in the light-emitting device 1 and image display device 100, the trapezoidal lenses 5 can have smaller manufacturing shape variations than the spherical lenses 5. This makes it possible to make the brightness uniform in all of the light-emitting devices 1 in the image display device 100.

[0100] [Modification] In the light emitting device 1 according to the thirteenth embodiment, a Fresnel surface can be provided on the lens 5. The lens 5 may also be formed of a diffractive lens. When the lens 5 configured in this manner is used, the light collection effect can be improved. Furthermore, the height of the lens 5 can be reduced.

[0101] 14. Other Embodiments The present technology is not limited to the above-described embodiments and may be modified in various ways without departing from the spirit of the present technology. For example, the present technology may be configured to combine two or more of the light-emitting devices 1 and image display devices 100 according to the above-described embodiments or modifications.

[0102] In the present disclosure, a light-emitting device includes a light-emitting element, a light reflecting unit, a light control unit, a lens, and a light-shielding unit. The light-emitting element has a light-emitting surface. The light reflecting unit is disposed on the side opposite the light-emitting surface of the light-emitting element and on a side of the light-emitting element, and reflects light emitted from the light-emitting surface. The light control unit is disposed on the light-emitting surface side within an area surrounded by the light reflecting unit, and controls the wavelength of the light. The lens is disposed on the side of the light control unit opposite the light-emitting element, and focuses the light emitted from the light-emitting surface. The light-shielding unit is disposed between the light control unit and the lens, has an opening that penetrates in the thickness direction to allow light to pass through, and blocks light emitted from the light-emitting surface. In the light-emitting device, light emitted from the light-emitting surface of the light-emitting element is emitted from the opening via the light control unit, further reflected by the light reflecting unit, and emitted from the opening via the light control unit. This allows for high brightness in the emission direction. In addition, since the light-emitting device can achieve high brightness in the emission direction, the light-emitting diameter of the light-emitting surface of the light-emitting element and the lens diameter can be formed to be the same size. This allows for a narrower pitch of the light-emitting device. Therefore, the light-emitting device and the image display device equipped with the light-emitting device can achieve both high brightness in the emission direction and a smaller pixel pitch.

[0103] <Configuration of the Present Technology> The present technology has the following configuration. According to the present technology having 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 a small pixel pitch. (1) A light-emitting device comprising: a light-emitting element having a light-emitting surface; a light reflecting portion disposed on the side of the light-emitting element opposite the light-emitting surface and on a side of the light-emitting element, and reflecting light emitted from the light-emitting surface; a lens disposed on the light-emitting surface side and concentrating the light emitted from the light-emitting surface; and a light-shielding portion disposed between the light-emitting surface and the lens, having an opening penetrating in the thickness direction to allow light to pass through, and shielding the light emitted from the light-emitting surface. (2) The light-emitting device according to (1), further comprising a light control portion disposed on the light-emitting surface side within a region surrounded by the light reflecting portion, and controlling at least one of a wavelength of light, light scattering, and a direction of light. (3) The light-emitting device according to (1) or (2), wherein the opening diameter of the opening is smaller than the lens diameter and the emission diameter of the light-emitting surface and is larger than 10 nm, and the emission diameter is the same as or smaller than the lens diameter. (4) The light-emitting device according to any one of (1) to (3), wherein the light-reflecting portion comprises: a first light-reflecting portion disposed on the side opposite the light-emitting surface of the light-emitting element; and a second light-reflecting portion disposed on a side of the light-emitting element, and further comprises a third light-reflecting portion disposed on the light-emitting surface side of the light-shielding portion and reflecting light. (5) The light-emitting device according to (4), wherein the third light-reflecting portion is formed as a flat surface, a scattering surface, or a curved surface. (6) The light-emitting device according to any one of (1) to (5), further comprising: a second lens disposed between the light-emitting surface and the light-shielding portion and concentrating light emitted from the light-emitting surface. (7) The light emitting device according to any one of (1) to (6), wherein an opening end surface of the opening is formed on a plane perpendicular to the light emitting surface or on an inclined surface in which the opening diameter increases toward the lens. (8) The light emitting device according to (7), wherein a fourth light reflecting portion that reflects light is disposed on the opening end surface. (9) The light emitting device according to any one of (1) to (8), wherein a wavelength cut filter is disposed between the light shielding portion and the lens.(10) The light-emitting device according to any one of (2) to (9), wherein a wavelength cut filter is disposed between the light-emitting surface and the light control section. (11) The light-emitting device according to any one of (2) to (10), wherein the light control section is formed of a light wavelength conversion material. (12) The light-emitting device according to any one of (2) to (10), wherein the light control section is formed of a light scattering body. (13) The light-emitting device according to any one of (1) to (11), wherein the opening has a shape that is circular, elliptical, square, rectangular, triangular, or polygonal with pentagons or more sides when viewed from the lens side. (14) The light-emitting device according to any one of (1) to (13), wherein the center of the opening coincides with the optical axis of light emitted from the light-emitting surface. (15) The light-emitting device according to any one of (1) to (14), wherein a plurality of the openings are disposed in the light-shielding section. (16) The light-emitting device according to any one of (1) to (15), wherein one lens is provided for one of the openings. (17) The light-emitting device according to any one of (1) to (16), wherein the lens is a spherical lens, a Fresnel lens, a trapezoidal lens, or a diffractive lens. (18) The light-emitting device according to any one of (1) to (17), wherein the light-emitting element is formed of an inorganic compound semiconductor or an organic semiconductor. (19) An image display device comprising a plurality of arranged light-emitting devices, the light-emitting device comprising: a light-emitting element having a light-emitting surface; a light-reflecting portion disposed on the side opposite to the light-emitting surface of the light-emitting element and on a side of the light-emitting element, the light-reflecting portion reflecting light emitted from the light-emitting surface; a lens disposed on the light-emitting surface side, the lens focusing the light emitted from the light-emitting surface; and a light-shielding portion disposed between the light-emitting surface and the lens, the light-shielding portion having an opening penetrating in the thickness direction to allow light to pass through, and the light-shielding portion shielding the light emitted from the light-emitting surface. (20) The image display device according to (19), wherein the arrangement pitch of the light-emitting elements in each of the plurality of light-emitting devices is the same as the arrangement pitch of the lenses.

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

[0105] Those skilled in the art will recognize that various modifications, combinations, subcombinations, and variations may occur depending on design requirements and other factors, and are intended to be within the scope of the appended claims and their equivalents.

Claims

1. A light emitting element having a light emitting surface; a light reflecting portion disposed on an opposite side of the light emitting surface of the light emitting element and on a side surface of the light emitting element, the light reflective portion reflecting light emitted from the light emitting surface; a lens disposed on the light emitting surface side and configured to collect light emitted from the light emitting surface; a light shielding portion that is disposed between the light emitting surface and the lens, that has an opening penetrating in a thickness direction to allow light to pass therethrough, and that shields light emitted from the light emitting surface; A light emitting device comprising:

2. The light control unit is disposed on the light emitting surface side within the area surrounded by the light reflecting unit, and controls at least one of the wavelength of light, the scattering of light, and the direction of light. The light emitting device according to claim 1 .

3. an aperture diameter of the aperture is smaller than a lens diameter of the lens and a light emitting diameter of the light emitting surface, and is larger than 10 nm; The light emission diameter is equal to or smaller than the lens diameter. The light emitting device according to claim 1 .

4. The light reflecting portion is a first light reflecting portion disposed on a side opposite to the light emitting surface of the light emitting element; a second light reflecting portion disposed on a side surface of the light emitting element, The light-shielding portion further includes a third light-reflecting portion disposed on the light-emitting surface side thereof for reflecting light. The light emitting device according to claim 1 .

5. The third light reflecting portion is formed on a flat surface, a scattering surface, or a curved surface. The light emitting device according to claim 4 .

6. The light emitting device further includes a second lens disposed between the light emitting surface and the light blocking portion, the second lens focusing the light emitted from the light emitting surface. The light emitting device according to claim 1 .

7. The opening end surface of the opening is formed on a plane perpendicular to the light emitting surface or on an inclined surface in which the opening diameter increases toward the lens. The light emitting device according to claim 1 .

8. A fourth light reflecting portion that reflects light is disposed on the opening end surface. The light emitting device according to claim 7.

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

10. A wavelength cut filter is disposed between the light emitting surface and the light control unit. The light emitting device according to claim 2 .

11. The light control section is formed of a light wavelength conversion material. The light emitting device according to claim 2 .

12. The light control section is formed of a light scattering body. The light emitting device according to claim 2 .

13. The shape of the opening is a circle, an ellipse, a square, a rectangle, a triangle, or a polygon having pentagons or more sides when viewed from the lens side. The light emitting device according to claim 1 .

14. The center 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 .

15. The opening is provided in a plurality of portions in the light shielding portion. The light emitting device according to claim 1 .

16. One of the lenses is provided for each of the openings. The light emitting device according to claim 1 .

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

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

19. A plurality of light emitting devices are arranged, The light emitting device comprises: A light emitting element having a light emitting surface; a light reflecting portion disposed on an opposite side of the light emitting surface of the light emitting element and on a side surface of the light emitting element, the light reflective portion reflecting light emitted from the light emitting surface; a lens disposed on the light emitting surface side and configured to collect light emitted from the light emitting surface; a light shielding portion that is disposed between the light emitting surface and the lens, that has an opening penetrating in a thickness direction to allow light to pass therethrough, and that shields light emitted from the light emitting surface; An image display device comprising:

20. In each of the plurality of light emitting devices, the arrangement pitch of the light emitting elements is the same as the arrangement pitch of the lenses.

20. The image display device according to claim 19.