Display device

Abstract

The embodiment of the invention provides a display device, belongs to the technical field of display, and aims to solve the technical problems of low brightness of an image formed by a display device and poor display effect of the display device in related technologies. The display device comprises a plurality of light-emitting structures and a light combiner, wherein the light-emitting structures are used for emitting light beams; the at least one light-emitting structure comprises a plurality of light-emitting assemblies and a light combining element; the light-emitting sides of the light-emitting assemblies face the light combining element, and the light combining element gathers light rays from the light-emitting assemblies to form light beams. The light combiner is used for receiving a plurality of light beams from the plurality of light-emitting structures, and the light combiner converges the plurality of light beams to form a combined light beam. According to the display device, the brightness of an image formed by the display device can be improved, and the display effect of the display device is improved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display device. BACKGROUND

[0002] A display device is a common electronic output device, which can convert electronic files into graphics, and is widely used in conference rooms, classrooms, cinemas and other places. The display device includes a plurality of light emitting structures and a light combiner. The plurality of light emitting structures can emit light beams toward the light combiner, so that the display device forms an image. However, the brightness of the image formed by the display device is low, and the display effect of the display device is poor. SUMMARY

[0003] Embodiments of the present application provide a display device, which can solve the technical problem of low brightness of the image formed by the display device and poor display effect of the display device.

[0004] In a first aspect, embodiments of the present application provide a display device, comprising:

[0005] a plurality of light emitting structures, the light emitting structures being configured to emit light beams;

[0006] at least one of the light emitting structures includes a plurality of light emitting components and a light combining element, the light emitting components are configured to emit light toward the light combining element, and the light combining element is configured to converge light from the light emitting components to form the light beam;

[0007] a light combiner, the light combiner is configured to receive a plurality of the light beams from the plurality of light emitting structures, and the light combiner is configured to converge the plurality of the light beams to form a combined light beam.

[0008] The display device of embodiments of the present application includes a plurality of light emitting structures and a light combiner. The light emitting structures can be configured to emit light beams. In the plurality of light emitting structures, at least one light emitting structure includes a plurality of light emitting components and a light combining element. The light emitting components are configured to emit light toward the light combining element, and the light combining element is configured to converge light from the light emitting components to form the light beam.

[0009] When an image is formed by the display device of embodiments of the present application, the plurality of light emitting components can emit light toward the light combining element, the light combining element converges light from the plurality of light emitting components to form the light beam, and the light beam propagates toward the light combiner. The light combiner can receive a plurality of the light beams from the plurality of light emitting structures, and the light combiner converges the plurality of the light beams to form a combined light beam. Compared with the related art in which a light emitting structure includes one light emitting component, the display device of embodiments of the present application can form a light beam by a plurality of light emitting components, thereby improving the brightness of the image formed by the display device and improving the display effect of the display device.

[0010] In some embodiments of the present application, the light combining element is configured as a prismatic light combining element, wherein the prismatic light combining element has a light emitting side surface and a plurality of incident side surfaces;

[0011] The incident side faces away from the light combiner and is in contact with the light-emitting component; the light-emitting side faces the light combiner, and the prismatic light-combining element emits the light beam toward the light combiner through the light-emitting side.

[0012] With such an arrangement, multiple light-emitting components can emit light toward the incident side of the prismatic light-combining element, and the prismatic light-combining element can converge light from multiple light-emitting components to form a light beam, so that the prismatic light-combining element can emit a light beam toward the light combiner through the light-emitting side.

[0013] In some embodiments of the present application, the light combining element is configured as a triangular prism light combining element, the number of the incident side surfaces is configured to be two, and the two incident side surfaces are perpendicular to each other.

[0014] In this way, the light-emitting component can emit light toward the incident side of the triangular prism-shaped light-combining element. The light from the two light-emitting components is perpendicular to each other. The triangular prism-shaped light-combining element can converge the light from multiple light-emitting components to form a light beam, thereby making the optical path of the light from multiple light-emitting components closer, thereby improving the light-emitting effect of multiple light-emitting components in the light-emitting structure.

[0015] In some embodiments of the present application, the light-emitting assembly is arranged parallel to the incident side surface, and the light-emitting assembly includes a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged in multiple rows and columns;

[0016] The row direction of the light emitting elements is arranged in parallel with the extension direction of the light combiner, and the column direction of the light emitting elements is arranged perpendicular to the extension direction of the light combiner.

[0017] With such an arrangement, the light emitting assembly includes a plurality of light emitting elements, which are arranged in multiple rows and columns, so that light can be emitted toward the incident side through the multiple light emitting elements, making the light emitted by the light emitting assembly more uniform.

[0018] In some embodiments of the present application, the number of the light-emitting structures is set to three, and the three light-emitting structures include a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure. The first light-emitting structure emits a first light beam, the second light-emitting structure emits a second light beam, and the third light-emitting structure emits a third light beam.

[0019] The light combiner is configured as a quadrangular prism-type light combiner, comprising a light combining side, and a first light incident side, a second light incident side, and a third light incident side connected in sequence, wherein the first light incident side and the third light incident side are arranged opposite to each other, and the second light incident side is arranged opposite to the light combining side; the first light incident side receives the first light beam, the second light incident side receives the second light beam, and the third light incident side receives the third light beam;

[0020] The quadrangular prism-shaped light combiner is provided with a first reflecting portion and a second reflecting portion, the first reflecting portion and the second reflecting portion are arranged crosswise; the first reflecting portion faces the first light incident side and the light combining side, and the second reflecting portion faces the third light incident side and the light combining side;

[0021] The first reflecting portion is used to reflect the first light beam and transmit the second light beam and the third light beam; the second reflecting portion is used to reflect the third light beam and transmit the first light beam and the second light beam;

[0022] The first light emitting structure emits the first light beam toward the first reflecting portion, so that the first light beam is reflected by the first reflecting portion and propagates toward the light combining side through the second reflecting portion;

[0023] The second light emitting structure emits the second light beam toward the light combining side, so that the second light beam passes through the first reflecting portion and the second reflecting portion and propagates toward the light combining side;

[0024] The third light emitting structure emits the third light beam toward the light combining side, so that the third light beam is reflected by the second reflecting portion and propagates toward the light combining side through the first reflecting portion;

[0025] The quadrangular prism-shaped light combiner converges the first light beam, the second light beam, and the third light beam to form the combined light beam, and the quadrangular prism-shaped light combiner emits the combined light beam through the light combining side.

[0026] In this manner, when an image is formed by the display device of the embodiment of the present application, the first light-emitting structure emits a first light beam toward the first reflecting portion through the first incident side, so that the first light beam is reflected by the first reflecting portion, and the first light beam propagates toward the light-combining side through the second reflecting portion; the second light-emitting structure emits a second light beam toward the light-combining side through the second incident side, so that the second light beam propagates toward the light-combining side through the first reflecting portion and the second reflecting portion; the third light-emitting structure emits a third light beam toward the light-combining side, so that the third light beam is reflected by the second reflecting portion, and the third light beam propagates toward the light-combining side through the first reflecting portion.

[0027] The quadrangular prism-shaped light combiner converges the first light beam, the second light beam, and the third light beam to form a combined light beam, and the quadrangular prism-shaped light combiner emits the combined light beam through a light combining side.

[0028] In some embodiments of the present application, in the light-emitting structure, the light-emitting elements in the same row have the same size;

[0029] Among the light-emitting elements in the same column, the size of the light-emitting element close to the light combiner is larger than the size of the light-emitting element far from the light combiner.

[0030] With this arrangement, multiple light-emitting elements can emit light toward the incident side of the prismatic light-combining element. This light is refracted within the prismatic light-combining element, increasing the light's propagation range. As the distance between the light-emitting elements and the light combiner increases, the optical path length of the light emitted by the light-emitting elements within the prismatic light-combining element increases, thus expanding the light's propagation range.

[0031] Among the light-emitting elements in the same column, the size of the light-emitting elements close to the light combiner is larger than the size of the light-emitting elements far away from the light combiner, so that the propagation range of the light of the light-emitting elements close to the light combiner is larger than the propagation range of the light of the light-emitting elements far away from the light combiner, thereby making the light emitted by multiple light-emitting elements in the light-emitting assembly more uniform.

[0032] In some embodiments of the present application, the light combining element is configured as a prism-shaped light combining element or a pyramid-shaped light combining element, and the light combining element has a light emitting bottom surface and a plurality of incident side surfaces;

[0033] The incident side surface faces away from the light combiner and is in contact with the light-emitting component; the light-emitting bottom surface faces the light combiner, and the prism-shaped light combining element emits the light beam toward the light combiner through the light-emitting bottom surface.

[0034] With such a configuration, the light-emitting component can emit light toward the incident side of the prism-shaped light-combining element, and the prism-shaped light-combining element can converge light from multiple light-emitting components to form a light beam, thereby making the optical paths of the light from multiple light-emitting components closer, thereby improving the light-emitting effect of multiple light-emitting components in the light-emitting structure.

[0035] In some embodiments of the present application, the number of the light-emitting structures is set to three, and the three light-emitting structures include a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure. The first light-emitting structure emits a first light beam, the second light-emitting structure emits a second light beam, and the third light-emitting structure emits a third light beam.

[0036] The light combiner comprises a first filter and a second filter arranged along the first direction; the first filter and the second filter are arranged obliquely relative to the first direction; the first filter is configured to transmit the second light beam and the third light beam, and reflect the first light beam; the second filter is configured to transmit the third light beam, and reflect the second light beam.

[0037] The first light-emitting structure emits the first light beam towards the first filter, so that the first light beam is reflected by the first filter and propagates away from the second filter along the first direction;

[0038] The second light-emitting structure emits the second light beam towards the second filter, so that the second light beam is reflected by the second filter and transmitted by the first filter along the first direction;

[0039] The third light-emitting structure is arranged on a side of the second filter away from the first filter, and emits the second light beam towards the second filter, so that the third light beam is transmitted by the second filter and the first filter along the first direction in sequence, and the first light beam, the second light beam and the third light beam converge to form the combined light beam.

[0040] In this way, the first light-emitting structure emits the first light beam towards the first filter, so that the first light beam is reflected by the first filter and propagates away from the second filter along the first direction; the second light-emitting structure emits the second light beam towards the second filter, so that the second light beam is reflected by the second filter and transmitted by the first filter along the first direction.

[0041] The third light-emitting structure emits the second light beam towards the second filter, so that the third light beam is transmitted by the second filter and the first filter along the first direction in sequence, and the first light beam, the second light beam and the third light beam converge to form the combined light beam.

[0042] In some embodiments of the present application, a lens structure is arranged between the at least one light combining element and the light combiner, and the lens structure is configured to at least transmit the light beams.

[0043] In this way, the lens structure is arranged between the at least one light combining element and the light combiner, and the lens structure is configured to at least transmit the light beams, so that the propagation direction of the light beams is more concentrated, the lens structure can adjust the incident angle of the light beams, can enhance the light combining effect of light rays incident from different directions, and can reduce the divergence angle of the light beams, so as to ensure the collimation of the light beams, thereby improving the projection light effect.

[0044] In a second aspect, the embodiments of the present application provide a display device, comprising a plurality of light emitting structures and a light combiner; at least one of the light emitting structures comprises a plurality of light emitting components and a light combining element, the light emitting components are arranged towards the light combining element;

[0045] The light emitting components emit light towards the light combining element, the light combining element converges the light from the light emitting components to form a light beam, the light beam propagates towards the light combiner; the light combiner receives a plurality of the light beams from the light emitting structures, the light combiner converges the plurality of the light beams to form a combined light beam. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiments or related technical description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0047] Figure 1 FIG. 1 is a structural schematic diagram of a display device according to an embodiment of the present application;

[0048] Figure 2 FIG. 2 is a structural schematic diagram of a light emitting structure with a light combining element according to an embodiment of the present application;

[0049] Figure 3 FIG. 3 is a schematic diagram of an arrangement of light emitting elements in a prism-type light combining element according to an embodiment of the present application;

[0050] Figure 4 FIG. 4 is a structural schematic diagram of a display device with another combined light beam according to an embodiment of the present application;

[0051] Figure 5 FIG. 5 is a structural schematic diagram of a display device with a first light filter and a second light filter according to an embodiment of the present application;

[0052] Figure 6 FIG. 6 is a structural schematic diagram of a display device with a first light filter and a second light filter according to another implementation manner of an embodiment of the present application;

[0053] Figure 7 FIG. 7 is a schematic diagram of an arrangement of light emitting elements in a prism-type light combining element according to an embodiment of the present application;

[0054] Figure 8 FIG. 8 is a schematic diagram of an arrangement of light emitting elements in a prism-type light combining element according to an embodiment of the present application;

[0055] Figure 9 FIG. 9 is a structural schematic diagram of a display device with a second light emitting structure and a third light emitting structure having a light combining element according to an embodiment of the present application;

[0056] Figure 10 Structure diagram of a display device with the first light emitting structure and the third light emitting structure of the embodiments of the present application having a light combining element;

[0057] Figure 11 Structure diagram of a display device with the first light emitting structure and the second light emitting structure of the embodiments of the present application having a light combining element.

[0058] Explanation of reference signs:

[0059] 100, light emitting structure;

[0060] 100a, first light emitting structure; 100b, second light emitting structure; 100c, third light emitting structure;

[0061] 110, light emitting assembly; 111, light emitting element; 120, light combining element; 130, lens structure;

[0062] 200, light combiner;

[0063] 210, first reflecting part; 220, second reflecting part; 230, first light filtering part; 240, second light filtering part;

[0064] 300, projection lens;

[0065] 400, gain curtain. DETAILED DESCRIPTION

[0066] As described in the background, a display device is a common electronic output device in the related art, which can convert electronic files into graphics, and is widely used in conference rooms, classrooms, cinemas and other places. The display device can be set as an active projection display device, which includes a plurality of light emitting structures and a light combiner. The plurality of light emitting structures can emit light towards the light combiner, so that the active projection display device forms an image. However, the light emitting structure usually includes one light emitting assembly, and the brightness of the image formed by the display device is low, and the display effect of the display device is poor.

[0067] Therefore, the display device of the embodiments of the present application includes a plurality of light emitting structures and a light combiner. The light emitting structure can be used to emit a light beam. In the plurality of light emitting structures, at least one light emitting structure can include a plurality of light emitting assemblies and a light combining element. The light emitting side of the plurality of light emitting assemblies faces the light combining element, so that the light combining element can converge the light from the plurality of light emitting assemblies to form a light beam.

[0068] When forming an image through the display device of the embodiment of the present application, multiple light-emitting components can emit light toward the light-combining element, which converges the light from the multiple light-emitting components to form a light beam, which propagates toward the light combiner; the light combiner can receive multiple light beams from multiple light-emitting structures, which converge the multiple light beams to form a combined light beam. Compared to the embodiment of the related art in which the light-emitting structure includes a single light-emitting component, the display device of the embodiment of the present application can form a light beam through multiple light-emitting components, thereby increasing the brightness of the image formed by the display device and improving the display effect of the display device.

[0069] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0070] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0071] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0072] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0073] The terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0074] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0075] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0076] Reference Figure 1 and Figure 2 An embodiment of the present application provides a display device comprising a plurality of light-emitting structures 100 and a light combiner 200. The light-emitting structures 100 are configured to emit light beams. At least one light-emitting structure 100 may comprise a plurality of light-emitting components 110 and a light-combining element 120. The light-emitting sides of the plurality of light-emitting components 110 face the light-combining element 120, and the light-combining element 120 may combine light from the plurality of light-emitting components 110 to form a light beam.

[0077] The light combiner 200 can be used to receive multiple light beams from multiple light emitting structures 100. The light combiner 200 converges the multiple light beams to form a combined light beam, thereby being able to form combined light beams of different colors by adjusting the brightness of the multiple light beams.

[0078] In some possible embodiments, the number of light-emitting structures 100 can be set to three. The three light-emitting structures 100 include a first light-emitting structure 100a, a second light-emitting structure 100b, and a third light-emitting structure 100c. The first light-emitting structure 100a can emit a first light beam, the second light-emitting structure 100b can emit a second light beam, and the third light-emitting structure 100c can emit a third light beam.

[0079] For example, the first light-emitting structure 100a can be set as a red light-emitting structure 100, and the first light beam can be set as a red light beam. The second light-emitting structure 100b can be set as a green light-emitting structure 100, and the second light beam can be set as a green light beam. The third light-emitting structure 100c can be set as a blue light-emitting structure 100, and the third light beam can be set as a blue light beam, thereby forming a combined light beam of different colors by adjusting the brightness of the red light beam, the green light beam, and the blue light beam.

[0080] It should be noted that the number of the light emitting structures 100 and the color of the light beams emitted by the light emitting structures 100 can also be adjusted according to usage conditions, and the embodiments of the present application do not impose further restrictions on this.

[0081] For example, the number of the light emitting structures 100 may be four, the number of the first light emitting structures 100a may be two, and the number of the second light emitting structure 100b and the third light emitting structure 100c may be one.

[0082] The number of the second light emitting structures 100 b may be set to two, and the number of the first light emitting structure 100 a and the third light emitting structure 100 c may be set to one.

[0083] The number of the third light emitting structures 100 c may be set to two, and the number of the first and second light emitting structures 100 a and 100 b may be set to one.

[0084] The light emitting structure 100 including the light emitting assembly 110 and the light combining element 120 is described below.

[0085] In some possible implementations, the light combining element 120 may be configured as a prismatic light combining element 120. The prismatic light combining element 120 may have a light emitting side surface and a plurality of incident side surfaces.

[0086] The incident side faces away from the light combiner 200 and is attached to the light emitting assembly 110 so that the light emitting assembly 110 can emit light toward the incident side. The light emitting side can face the light combiner 200, and the prismatic light combining element 120 can emit a light beam toward the light combiner 200 through the light emitting side.

[0087] It should be noted that the prismatic light-combining element 120 may have multiple side surfaces and two bottom surfaces, wherein the multiple side surfaces may be connected end to end, and the two bottom surfaces may be arranged parallel to each other along the extension direction of the prismatic light-combining element 120. In a plane perpendicular to the extension direction of the prismatic light-combining element 120, the light-emitting side surface and the multiple incident side surfaces are arranged to form a polygon.

[0088] The light-emitting side surface and the multiple incident side surfaces are both sides of the prismatic light-combining element 120, and the light-emitting side surface and the multiple incident side surfaces are both parallel to the extension direction of the prismatic light-combining element 120, so that the light-emitting component 110 can emit light toward the prismatic light-combining element 120 through the side surface of the prismatic light-combining element 120, and the light beam emitted by the prismatic light-combining element 120 through the light-emitting side surface can be perpendicular to the extension direction of the prismatic light-combining element 120.

[0089] It is easy to understand that the side surfaces of the prismatic light combining element 120 may be the same, and in a plane perpendicular to the extending direction of the prismatic light combining element 120 , the side surfaces of the prismatic light combining element 120 may form a regular polygon.

[0090] Alternatively, the side surfaces of the prismatic light combining element 120 may be configured differently. The side surface area of ​​the prismatic light combining element 120 may be adjusted according to the positions of the light emitting assembly 110 and the light combiner 200, and this embodiment of the present application does not impose any further limitations thereto.

[0091] For example, the light combining element 120 can be configured as a triangular prism-shaped light combining element 120. The number of incident side surfaces can be set to two, and the two incident side surfaces can be perpendicular to each other. In a plane perpendicular to the extension direction of the triangular prism-shaped light combining element 120, the two incident side surfaces and the light emitting side surface can be arranged to form a right triangle.

[0092] In some possible embodiments, each incident side surface may correspond to one or more light-emitting components 110. The light-emitting components 110 may be arranged parallel to the corresponding incident side surface. The light-emitting direction of the light-emitting components 110 may be perpendicular to the corresponding incident side surface, so that the light emitted by the light-emitting components 110 can all propagate within the prismatic light-combining element 120 along the perpendicular corresponding incident side surface.

[0093] For example, the light combining element 120 may be provided with an anti-reflection film, and the type of the anti-reflection film may be adjusted according to the luminous color of the light emitting structure 100 .

[0094] For example, in the first light emitting structure 100a, the first light emitting structure 100a can emit a red light beam, and the light emitting element 111 in the first light emitting structure 100a can emit red light. The antireflection film can be set as a red antireflection film, which can allow red light and red light beams to pass through.

[0095] In the second light emitting structure 100b, the second light emitting structure 100b can emit a green light beam, and the light emitting element 111 in the second light emitting structure 100b can emit green light. The antireflection film can be set as a green antireflection film, which can allow green light and green light beam to pass through.

[0096] In the third light emitting structure 100c, the third light emitting structure 100c can emit a blue light beam, and the light emitting element 111 in the third light emitting structure 100c can emit a blue light. The antireflection film can be set as a blue antireflection film, which can allow blue light and blue light beam to pass through.

[0097] Reference Figure 1-Figure 3The light emitting assembly 110 includes a plurality of light emitting elements 111, which can be arranged in multiple rows and columns. The rows of the light emitting elements 111 can be arranged parallel to the extension direction of the light combiner 200, and the columns of the light emitting elements 111 can be arranged perpendicular to the extension direction of the light combiner 200.

[0098] In the same light emitting structure 100 , the number of light emitting elements 111 in the light emitting assembly 110 may be the same. Alternatively, in the same light emitting structure 100 , the number of light emitting elements 111 in the light emitting assembly 110 may be different.

[0099] It should be noted that the light emitting assembly 110 includes a plurality of light emitting elements 111 , which can be arranged in multiple rows and columns. The plurality of light emitting elements 111 emit light toward the incident side, making the light emitted by the light emitting assembly 110 more uniform.

[0100] In the light emitting structure 100 , the light emitting elements 111 in the same row may have the same size. In the same column, the light emitting elements 111 closer to the light combiner 200 may have a larger size than the light emitting elements 111 farther from the light combiner 200 .

[0101] The multiple light-emitting elements 111 can emit light toward the incident side of the prismatic light-combining element 120. This light can be refracted within the prismatic light-combining element 120, increasing the propagation range of the light. As the distance between the light-emitting elements 111 and the light combiner 200 increases, the optical path length of the light emitted by the light-emitting elements 111 within the prismatic light-combining element 120 increases, thereby increasing the propagation range of the light.

[0102] In the same column of light-emitting elements 111, the size of the light-emitting element 111 close to the light combiner 200 can be larger than the size of the light-emitting element 111 far away from the light combiner 200, so that the propagation range of the light of the light-emitting element 111 close to the light combiner 200 is larger than the propagation range of the light of the light-emitting element 111 far away from the light combiner 200, thereby making the light emitted by the multiple light-emitting elements 111 in the light-emitting component 110 more uniform.

[0103] It is easy to understand that the light-emitting element 111 can be configured as a Micro LED light-emitting chip. The light-emitting element 111 can be configured as a vertical chip or a flip-chip. Alternatively, some of the light-emitting elements 111 can be configured as vertical chips, and the remaining light-emitting elements 111 can be configured as flip-chip chips.

[0104] Exemplarily, the light-emitting element 111 in the light-emitting component 110 can be formed by one of the methods such as mass transfer, color conversion and wafer bonding. The light-emitting elements 111 of different light-emitting components 110 can be formed in the same way or in different ways.

[0105] The light emitting element 111 in the light emitting assembly 110 can be arranged in a single layer.

[0106] Alternatively, the light emitting element 111 in the light emitting assembly 110 can also be arranged in multiple layers. For example, the light emitting element 111 can be arranged in multiple layers by using a stacked chip technology. The light emitting element 111 arranged in multiple layers can be arranged in the same direction of light emission, thereby further improving the light emission brightness of the light emitting assembly 110.

[0107] By using the above technical solution, the light emitting element 111 arranged in multiple rows and multiple columns can emit light towards the light combining element 120. The light emission direction of the light emitting element 111 is perpendicular to the corresponding incident side, so that the light can propagate to the light emission side of the light combining element 120 in a direction perpendicular to the corresponding incident side, thereby being able to converge in the light combining element 120 to form a light beam, and emit the light beam towards the light combiner 200 through the light emission side of the light combining element 120.

[0108] For example, a lens structure 130 can be arranged between the at least one light combining element 120 and the light combiner 200. The lens structure 130 is at least used for transmitting the light beam, so that the propagation direction of the light beam is more concentrated. The lens structure 130 can adjust the incident angle of the light beam, enhance the light combining effect of light rays incident in different directions, and reduce the divergence angle of the light beam emission, thereby ensuring the collimation of the light beam, and further improving the projection light efficiency.

[0109] The lens structure 130 can include a plurality of microlenses. The number of microlenses can be equal to the number of light emitting elements 111. The plurality of microlenses can be arranged one-to-one corresponding to the plurality of light emitting elements 111. The size of the microlenses can be smaller than the size of the symmetrical light emitting elements 111.

[0110] Referring to Figure 1 and Figure 4 In some possible embodiments, the light combiner 200 can be arranged as a four-prism light combiner 200. The four-prism light combiner 200 can have a light combining side, and a first light incident side, a second light incident side and a third light incident side connected in sequence. The first light incident side and the third light incident side can be arranged opposite to each other, and the second light incident side can be arranged opposite to the light combining side.

[0111] For example, the first light incident side can receive a first light beam, the second light incident side can receive a second light beam, and the third light incident side can receive a third light beam. The four-prism light combiner 200 can output a combined light beam formed by the convergence of the first light beam, the second light beam and the third light beam through the light combining side.

[0112] The quadrangular prism type light combiner 200 can have four side surfaces and two bottom surfaces, wherein the four side surfaces can be connected in sequence, and the two bottom surfaces can be arranged in parallel along the extending direction of the quadrangular prism type light combiner 200. In a plane perpendicular to the extending direction of the quadrangular prism type light combiner 200, the light emitting side surface and the plurality of light incident side surfaces form a quadrilateral.

[0113] The side surfaces of the quadrangular prism type light combiner 200 can be the same, and in a plane perpendicular to the extending direction of the quadrangular prism type light combiner 200, the four side surfaces of the quadrangular prism type light combiner 200 can form a square.

[0114] Exemplarily, the quadrangular prism type light combiner 200 can be provided with a first reflection part 210 and a second reflection part 220. The first reflection part 210 and the second reflection part 220 can be arranged along the diagonal of the quadrangular prism type light combiner 200. The first reflection part 210 can be directed towards the first light incident side and the light combining side, and the second reflection part 220 can be directed towards the third light incident side and the light combining side.

[0115] The first reflection part 210 can be used for reflecting the first light beam, and the first reflection part 210 can be used for transmitting the second light beam and the third light beam. The second reflection part 220 can be used for reflecting the third light beam, and the second reflection part 220 can be used for transmitting the first light beam and the second light beam.

[0116] Exemplarily, the first light emitting structure 100a can emit the first light beam through the first light incident side towards the first reflection part 210, so that the first light beam is reflected by the first reflection part 210 and propagates towards the light combining side through the second reflection part 220.

[0117] The second light emitting structure 100b can emit the second light beam through the second light incident side towards the light combining side, so that the second light beam propagates towards the light combining side through the first reflection part 210 and the second reflection part 220.

[0118] The third light emitting structure 100c can emit the third light beam through the third light incident side towards the light combining side, so that the third light beam is reflected by the second reflection part 220 and propagates towards the light combining side through the first reflection part 210.

[0119] The quadrangular prism type light combiner 200 can converge the first light beam, the second light beam and the third light beam through the first reflection part 210 and the second reflection part 220 to form a combined light beam, and the quadrangular prism type light combiner 200 emits the combined light beam through the light combining side.

[0120] It should be noted that when the first light beam emitted by the first light emitting structure 100a is relatively far away from the light combining side of the quadrangular prism light combiner 200, the first light beam can be emitted by the first light emitting structure 100a through the first incidence side towards the first reflecting part 210, the first light beam is reflected by the first reflecting part 210 and propagates towards the light combining side, the first light beam can transmit through the second reflecting part 220 and emit light from the light combining side.

[0121] With reference to Figure 1 When the first light beam emitted by the first light emitting structure 100a is relatively close to the light combining side of the quadrangular prism light combiner 200, the second light beam is relatively close to the first incidence side, the second light beam transmits through the second reflecting part 220 and the first reflecting part 210 in turn, and propagates towards the light combining side. The third light beam is relatively close to the light combining side of the quadrangular prism light combiner 200, the third light beam transmits through the first reflecting part 210, the third light beam is reflected by the second reflecting part 220 and propagates towards the light combining side, so as to converge the first light beam, the second light beam and the third light beam to form a light combining beam.

[0122] With reference to Figure 4 When the first light beam emitted by the first light emitting structure 100a is relatively close to the light combining side of the quadrangular prism light combiner 200, the first light beam can be emitted by the first light emitting structure 100a through the first incidence side towards the first reflecting part 210, the first light beam transmits through the second reflecting part 220, the first light beam is reflected by the first reflecting part 210 and propagates towards the light combining side to emit light from the light combining side.

[0123] When the first light beam emitted by the first light emitting structure 100a is relatively far away from the light combining side of the quadrangular prism light combiner 200, the second light beam is relatively far away from the first incidence side, the second light beam transmits through the first reflecting part 210 and the second reflecting part 220 in turn, and propagates towards the light combining side. The third light beam is relatively far away from the light combining side of the quadrangular prism light combiner 200, the third light beam is reflected by the second reflecting part 220 and propagates towards the light combining side, the third light beam transmits through the first reflecting part 210 and propagates towards the light combining side, so as to converge the first light beam, the second light beam and the third light beam to form a light combining beam.

[0124] It should be noted that the side surfaces of the quadrangular prism light combiner 200 are the same. When the four side surfaces of the quadrangular prism light combiner 200 enclose a square in a plane perpendicular to the extension direction of the quadrangular prism light combiner 200, the first reflecting part 210 and the second reflecting part 220 are cross arranged, and the first reflecting part 210 and the second reflecting part 220 correspond to the diagonal lines of the square.

[0125] With reference to Figure 1 and Figure 4In the same light combining beam, the optical path of the first light beam to the first reflecting part 210 is equal to the optical path of the second light beam to the first reflecting part 210, and the optical path of the first light beam to the first reflecting part 210 is equal to the optical path of the third light beam to the first reflecting part 210.

[0126] The sum of the optical path of the first light beam to the first reflecting part 210 and the optical path of the third light beam to the second reflecting part 220 is equal to the side length of the square.

[0127] Referring to Figure 2 , Figure 5-Figure 8 In some possible embodiments, the light combining element 120 can be provided as a prism-type light combining element 120 or a pyramid-type light combining element 120. The prism-type light combining element 120 and the pyramid-type light combining element 120 can have a light emitting bottom surface and a plurality of incident side surfaces, and the incident side surfaces can be connected to the light emitting bottom surface through edges of the light emitting bottom surface.

[0128] For example, the incident side surfaces can be away from the light combiner 200, and the incident side surfaces can be attached to the light emitting assemblies 110. Each incident side surface can correspond to one or more light emitting assemblies 110. The light emitting assemblies 110 can be arranged in parallel with the corresponding incident side surfaces.

[0129] The light emitting direction of the light emitting assemblies 110 can be perpendicular to the corresponding incident side surfaces, so that the light rays emitted by the light emitting assemblies 110 can propagate in the prism-type light combining element 120 along the direction perpendicular to the corresponding incident side surfaces.

[0130] The light emitting bottom surface of the prism-type light combining element 120 can be towards the light combiner 200, and the prism-type light combining element 120 can converge the light rays from the plurality of light emitting assemblies 110 through the plurality of incident side surfaces and emit the light beams towards the light combiner 200 through the light emitting bottom surface.

[0131] For example, the prism-type light combining element 120 can be provided as a four-prism-type light combining element 120. The four-prism-type light combining element 120 can have a light emitting bottom surface and four incident side surfaces, and the angle between the incident side surfaces and the light emitting bottom surface of the four-prism-type light combining element 120 can be provided as 45 degrees.

[0132] The light rays emitted by the light emitting assemblies 110 can be perpendicular to the incident side surfaces, i.e., the light emitting angle of the light emitting assemblies 110 and the angle between the light emitting bottom surface can be 45 degrees, and the light rays emitted by the two light emitting assemblies 110 arranged oppositely can be arranged vertically.

[0133] It is easy to understand that the light emitting angle of the light emitting assemblies 110 and the angle between the light emitting bottom surface can be provided in any one of the angle ranges of 30-40 degrees, 40-50 degrees, and 50-60 degrees, so that the light combining element 120 can refract the light rays to the direction close to being perpendicular to the light emitting bottom surface, and improve the light combining effect of the light combining element 120.

[0134] The number of the light emitting structures 100 can be set to three. The three light emitting structures 100 include a first light emitting structure 100a, a second light emitting structure 100b and a third light emitting structure 100c. The first light emitting structure 100a can emit a first light beam, the second light emitting structure 100b can emit a second light beam, and the third light emitting structure 100c can emit a third light beam.

[0135] For example, the first light emitting structure 100a can be set as a red light emitting structure 100, and the first light beam can be set as a red light beam. The second light emitting structure 100b can be set as a green light emitting structure 100, and the second light beam can be set as a green light beam. The third light emitting structure 100c can be set as a blue light emitting structure 100, and the third light beam can be set as a blue light beam, so that different color combined light beams can be formed by adjusting the brightness of the red light beam, the green light beam and the blue light beam.

[0136] The structure and setting mode of the light emitting structure 100 can refer to the above, and the embodiments of the present application will not be described here.

[0137] With reference to Figure 2 , Figure 5 and Figure 6 , in some possible implementations, the light combiner 200 can include a first filter 230 and a second filter 240 arranged along a first direction. The first filter 230 and the second filter 240 can be arranged obliquely relative to the first direction.

[0138] The first filter 230 can be used to transmit the second light beam and the third light beam, and the first filter 230 can be used to reflect the first light beam. The second filter 240 can be used to transmit the third light beam, and the second filter 240 can be used to reflect the second light beam.

[0139] For example, the first light emitting structure 100a can emit the first light beam towards the first filter 230, so that the first light beam propagates away from the second filter 240 along the first direction after being reflected by the first filter 230.

[0140] The second light emitting structure 100b can emit the second light beam towards the second filter 240, so that the second light beam propagates through the first filter 230 along the first direction after being reflected by the second filter 240, and the second light beam propagates in the same direction as the first light beam.

[0141] The third light emitting structure 100c can be arranged on a side of the second filter 240 away from the first filter 230. The third light emitting structure 100c can emit the third light beam towards the second filter 240, so that the third light beam propagates through the second filter 240 and the first filter 230 along the first direction in sequence, and the first light beam, the second light beam and the third light beam converge to form a combined light beam.

[0142] With reference to Figure 2 , Figure 5-Figure 8 In some possible implementations, a lens structure 130 can be arranged between the at least one light combining element 120 and the light combiner 200, and the lens structure 130 is at least used for transmitting the light beams, so that the propagation direction of the light beams is more concentrated, the lens structure 130 can adjust the incident angle of the light beams, can enhance the light combining effect of light rays in different directions, and can reduce the divergence angle of the light beams, ensure the collimation of the light beams, and thus improve the projection light effect.

[0143] The lens structure 130 can include a plurality of microlenses, and the number of the microlenses can be equal to the number of the light emitting elements 111. The plurality of microlenses can be arranged one-to-one with the plurality of light emitting elements 111, and the size of the microlenses can be smaller than the size of the symmetrical light emitting elements 111.

[0144] It is easy to understand that the incident side surface of the prism-shaped light combining element 120 can be a triangular incident side surface, and the shape of the prism-shaped light combining element 120 can be approximately a pyramid. The incident side surface of the prism-shaped light combining element 120 can be a trapezoidal incident side surface.

[0145] For example, the light combining element 120 can also be arranged in other shapes, and the light combiner 200 can also be arranged in other shapes. As long as the light combining element 120 can converge the light rays of the same color to form a light beam, and the light combiner 200 can converge a plurality of light beams to form a combined light beam.

[0146] In some possible implementations, with reference to Figures 9-11 At least one of the first light emitting structure 100a, the second light emitting structure 100b, and the third light emitting structure 100c can include a plurality of light emitting assemblies 110 and a light combining element 120.

[0147] For example, the first light emitting structure 100a includes a plurality of light emitting assemblies 110 and a light combining element 120, the second light emitting structure 100b includes a light emitting assembly 110, and the third light emitting structure 100c includes a light emitting assembly 110.

[0148] The second light emitting structure 100b includes a plurality of light emitting assemblies 110 and a light combining element 120, the first light emitting structure 100a includes a light emitting assembly 110, and the third light emitting structure 100c includes a light emitting assembly 110.

[0149] The third light emitting structure 100c includes a plurality of light emitting assemblies 110 and a light combining element 120, the first light emitting structure 100a includes a light emitting assembly 110, and the second light emitting structure 100b includes a light emitting assembly 110.

[0150] The first light emitting structure 100a includes a plurality of light emitting components 110 and a light combining element 120, the second light emitting structure 100b includes a light emitting component 110 and a light combining element 120, and the third light emitting structure 100c includes a light emitting component 110.

[0151] The first light emitting structure 100a includes a plurality of light emitting components 110 and a light combining element 120, the third light emitting structure 100c includes a light emitting component 110 and a light combining element 120, and the second light emitting structure 100b includes a light emitting component 110.

[0152] The second light emitting structure 100b includes a light emitting component 110 and a light combining element 120, the third light emitting structure 100c includes a plurality of light emitting components 110 and a light combining element 120, and the first light emitting structure 100a includes a light emitting component 110.

[0153] The first light emitting structure 100a includes a plurality of light emitting components 110 and a light combining element 120, the second light emitting structure 100b includes a light emitting component 110 and a light combining element 120, and the third light emitting structure 100c includes a light emitting component 110.

[0154] For example, Figure 9 A schematic diagram of a display device in which the first light emitting structure 100a has no light combining element 120, and the second light emitting structure 100b and the third light emitting structure 100c have light combining elements 120. Figure 10 A schematic diagram of a display device in which the first light emitting structure 100a and the third light emitting structure 100c have light combining elements 120, and the second light emitting structure 100b has no light combining element 120. Figure 11 A schematic diagram of a display device in which the first light emitting structure 100a and the second light emitting structure 100b have light combining elements 100, and the third light emitting structure 100c has no light combining element 120.

[0155] In some possible embodiments, the display device can be configured as an active projection display device. The display device can further include a projection lens 300, which can be directed towards a light combining side of the light combiner 200. The projection lens 300 can include a plurality of lenses matched with each other, and has the functions of condensing, collimating and expanding.

[0156] The display device can further include a gain curtain 400. The gain curtain 400 is arranged on a side of the projection lens 300 away from the light combiner 200, so that the combined light beam can pass through the projection lens 300 and form an image on the gain curtain 400.

[0157] In summary, the display device of the embodiment of the present application includes multiple light-emitting structures 100 and a light combiner 200. The light-emitting structures 100 can be used to emit light beams. Among the multiple light-emitting structures 100, at least one light-emitting structure 100 can include multiple light-emitting components 110 and a light-combining element 120. The light-emitting sides of the multiple light-emitting components 110 face the light-combining element 120, so that the light from the multiple light-emitting components 110 can be combined by the light-combining element 120 to form a light beam.

[0158] When an image is formed by the display device of the embodiment of the present application, multiple light-emitting components 110 can emit light toward the light-combining element 120, and the light-combining element 120 converges the light from the multiple light-emitting components 110 to form a light beam, which propagates toward the light combiner 200; the light combiner 200 can receive multiple light beams from multiple light-emitting structures 100, and the light combiner 200 converges the multiple light beams to form a combined light beam.

[0159] Compared with the embodiment in the related art in which the light-emitting structure 100 includes a light-emitting component 110, the display device of the embodiment of the present application can form a light beam through multiple light-emitting components 110, thereby increasing the brightness of the image formed by the display device and improving the display effect of the display device.

[0160] An embodiment of the present application provides a display device, including multiple light-emitting structures 100 and a light combiner 200; at least one light-emitting structure 100 includes multiple light-emitting components 110 and a light combining element 120, and the light-emitting sides of the multiple light-emitting components 110 face the light combining element 120.

[0161] Multiple light-emitting components 110 emit light toward the light-combining element 120, and the light-combining element 120 converges the light from multiple light-emitting components 110 to form a light beam, which propagates toward the light combiner 200; the light combiner 200 receives multiple light beams from multiple light-emitting structures 100, and the light combiner 200 converges the multiple light beams to form a combined light beam.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0163] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A display device, characterized in that: include: a plurality of light-emitting structures, each light-emitting structure being configured to emit a light beam; At least one of the light-emitting structures includes a plurality of light-emitting components and a light-combining element; The light-emitting sides of the plurality of light-emitting components face the light-combining element, and the light-combining element converges the light from the plurality of light-emitting components to form the light beam; A light combiner is used at least to receive the multiple light beams from the multiple light-emitting structures, and the light combiner converges the multiple light beams to form a combined light beam.

2. The display device according to claim 1, wherein The light combining element is configured as a prismatic light combining element, wherein the prismatic light combining element has a light emitting side surface and a plurality of incident side surfaces; The incident side faces away from the light combiner and is in contact with the light-emitting component; the light-emitting side faces the light combiner, and the prismatic light-combining element emits the light beam toward the light combiner through the light-emitting side.

3. The display device according to claim 2, wherein: The light combining element is configured as a triangular prism light combining element, the number of the incident side surfaces is configured as two, and the two incident side surfaces are perpendicular to each other.

4. The display device according to claim 2, wherein: The light-emitting assembly is arranged parallel to the incident side surface, and the light-emitting assembly includes a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged in multiple rows and columns; The row direction of the light emitting elements is arranged in parallel with the extension direction of the light combiner, and the column direction of the light emitting elements is arranged perpendicular to the extension direction of the light combiner.

5. The display device according to claim 4, wherein: The number of the light-emitting structures is set to three, and the three light-emitting structures include a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure. The first light-emitting structure emits a first light beam, the second light-emitting structure emits a second light beam, and the third light-emitting structure emits a third light beam. The light combiner is configured as a quadrangular prism-type light combiner, comprising a light combining side, and a first light incident side, a second light incident side, and a third light incident side connected in sequence, wherein the first light incident side and the third light incident side are arranged opposite to each other, and the second light incident side is arranged opposite to the light combining side; the first light incident side receives the first light beam, the second light incident side receives the second light beam, and the third light incident side receives the third light beam; The quadrangular prism-shaped light combiner is provided with a first reflecting portion and a second reflecting portion, the first reflecting portion and the second reflecting portion are arranged crosswise; the first reflecting portion faces the first light incident side and the light combining side, and the second reflecting portion faces the third light incident side and the light combining side; The first reflecting portion is used to reflect the first light beam and transmit the second light beam and the third light beam; the second reflecting portion is used to reflect the third light beam and transmit the first light beam and the second light beam; The first light emitting structure emits the first light beam toward the first reflecting portion, so that the first light beam is reflected by the first reflecting portion and propagates toward the light combining side through the second reflecting portion; The second light emitting structure emits the second light beam toward the light combining side, so that the second light beam passes through the first reflecting portion and the second reflecting portion and propagates toward the light combining side; The third light emitting structure emits the third light beam toward the light combining side, so that the third light beam is reflected by the second reflecting portion and propagates toward the light combining side through the first reflecting portion; The quadrangular prism-shaped light combiner converges the first light beam, the second light beam, and the third light beam to form the combined light beam, and the quadrangular prism-shaped light combiner emits the combined light beam through the light combining side.

6. The display device according to claim 5, wherein: In the light-emitting structure, the light-emitting elements in the same row have the same size; Among the light-emitting elements in the same column, the size of the light-emitting element close to the light combiner is larger than the size of the light-emitting element far from the light combiner.

7. The display device according to claim 1, wherein The light combining element is configured as a prism-shaped light combining element or a pyramid-shaped light combining element, and the light combining element has a light emitting bottom surface and a plurality of incident side surfaces; The incident side surface faces away from the light combiner and is in contact with the light-emitting component; the light-emitting bottom surface faces the light combiner, and the prism-shaped light combining element emits the light beam toward the light combiner through the light-emitting bottom surface.

8. The display device according to claim 1, wherein The number of the light-emitting structures is set to three, and the three light-emitting structures include a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure. The first light-emitting structure emits a first light beam, the second light-emitting structure emits a second light beam, and the third light-emitting structure emits a third light beam. The light combiner includes a first filter and a second filter arranged along the first direction; the first filter and the second filter are arranged obliquely relative to the first direction; the first filter is used to transmit the second light beam and the third light beam, and the first filter is used to reflect the first light beam; the second filter is used to transmit the third light beam, and the second filter is used to reflect the second light beam; The first light emitting structure emits the first light beam toward the first filter element, so that the first light beam is reflected by the first filter element and propagates along the first direction away from the second filter element; The second light emitting structure emits the second light beam toward the second filter, so that the second light beam is reflected by the second filter and then passes through the first filter along the first direction; The third light-emitting structure is arranged on a side of the second filter away from the first filter, and the third light-emitting structure emits the third light beam toward the second filter, so that the third light beam passes through the second filter and the first filter in sequence along the first direction, and the first light beam, the second light beam and the third light beam converge to form the combined light beam.

9. The display device according to any one of claims 1 to 8, characterized in that: A lens structure is provided between at least one of the light combining elements and the light combiner, and the lens structure is at least used to transmit the light beam.

10. A display device, characterized in that: It includes multiple light-emitting structures and light combiners; at least one of the light-emitting structures includes multiple light-emitting components and a light-combining element, and the light-emitting sides of the multiple light-emitting components face the light-combining element; The multiple light-emitting components emit light toward the light-combining element, and the light-combining element converges the light from the multiple light-emitting components to form a light beam, which propagates toward the light combiner; the light combiner receives the multiple light beams from the multiple light-emitting structures, and the light combiner converges the multiple light beams to form a combined light beam.

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