Light emitting diode structure

TWI934217BActive Publication Date: 2026-08-01AU OPTRONICS CORP
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Patent Information

Authority / Receiving Office
TW · TW
Patent Type
Patents
Current Assignee / Owner
AU OPTRONICS CORP
Filing Date
2023-06-30
Publication Date
2026-08-01

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Abstract

This disclosure provides a light-emitting diode (LED) structure. The LED structure includes a substrate and at least one first light-emitting structure. The at least one first light-emitting structure includes at least one first red LED, a first green LED, a first blue LED, and a first focusing optical element. The at least one first red LED, the first green LED, and the first blue LED are located on the substrate. The first focusing optical element completely covers the at least one first red LED, the first green LED, and the first blue LED.
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Description

Light-emitting diode structure The present disclosure relates to a light-emitting diode structure. Display panels are widely used in daily life. Among them, light-emitting diodes as the light sources of display panels have a significant impact on the imaging quality of display panels. For example, good imaging quality requires avoiding unexpected displacement of the light emitted by the light source, which may cause displacement of the displayed pattern. Good imaging quality also requires good display resolution to meet various usage requirements. For the existing light source differences of different light types (such as different colored lights), different regulations need to be carried out for different light types to obtain better imaging quality (such as more uniform display brightness, etc.). That is to say, in response to various situations, a light-emitting diode structure is needed to well regulate the light emitted by the light-emitting diode and solve the above problems. The present disclosure provides a light-emitting diode structure. The light-emitting diode structure includes a substrate and at least one first light-emitting structure. The at least one first light-emitting structure includes at least one first red light-emitting diode, a first green light-emitting diode, a first blue light-emitting diode, and a first focusing optical element. The at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode are on the substrate. The first focusing optical element completely covers the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode. In some embodiments, the arrangement of the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode is a quadrilateral arrangement, a triangular arrangement, or a linear arrangement. In some embodiments, the number of the at least one first red light-emitting diode is plural, and the at least one first red light-emitting diode is located on the diagonal of the quadrilateral arrangement. In some embodiments, the top view area of the at least one first red light-emitting diode is larger than the top view area of the first green light-emitting diode and the top view area of the first blue light-emitting diode. In some embodiments, the light-emitting diode structure further includes at least one second light-emitting structure beside the at least one first light-emitting structure. The at least one second light-emitting structure includes at least one second red light-emitting diode, a second green light-emitting diode, a second blue light-emitting diode, and a second focusing optical element. The at least one second red light-emitting diode, the second green light-emitting diode, and the second blue light-emitting diode are on the substrate. The second focusing optical element covers the at least one second red light-emitting diode, the second green light-emitting diode, and the second blue light-emitting diode, wherein the first arrangement of the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode is different from the second arrangement of the at least one second red light-emitting diode, the second green light-emitting diode, and the second blue light-emitting diode. In some embodiments, the first arrangement and the second arrangement are a first quadrilateral arrangement and a second quadrilateral arrangement respectively, and at least one first red light-emitting diode and at least one second red light-emitting diode are located on the diagonals of the first quadrilateral arrangement and the second quadrilateral arrangement respectively. In some embodiments, when viewed from above, the first quadrilateral arrangement and the second quadrilateral arrangement are left-right mirror images. In some embodiments, the first arrangement and the second arrangement are a first triangular arrangement and a second triangular arrangement respectively. In some embodiments, the second triangular arrangement is the first triangular arrangement rotated 40° to 80° in a direction perpendicular to the substrate. In some embodiments, the area of at least one first red light-emitting diode on the substrate is larger than the areas of the first green light-emitting diode and the first blue light-emitting diode on the substrate respectively, and the area of at least one second red light-emitting diode on the substrate is larger than the areas of the second green light-emitting diode and the second blue light-emitting diode on the substrate respectively. In some embodiments, at least one first red light-emitting diode, the second green light-emitting diode, and the second blue light-emitting diode are arranged on the substrate along a first direction, and at least one second red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode are arranged on the substrate along a second direction different from the first direction and parallel to the first direction. In some embodiments, the number of at least one first light-emitting structure is plural and arranged on the substrate along a first direction, the number of at least one second light-emitting structure is plural and arranged on the substrate along a second direction different from the first direction and parallel to the first direction, the first arrangement is a first linear arrangement, and the second arrangement is a second linear arrangement. In some embodiments, the first linear arrangement is opposite to the second linear arrangement. The present disclosure also provides a light-emitting diode structure. The light-emitting diode structure includes a substrate and a first light-emitting structure. The first light-emitting structure includes a first red light-emitting diode, a first green light-emitting diode, a first blue light-emitting diode, and a first focusing optical element. The first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode are on the substrate. The first focusing optical element covers the first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode, wherein the first focusing optical element includes a first main portion having a first main radius of curvature and a first secondary portion having a first secondary radius of curvature, the first secondary portion is located on the first main portion, and the first main radius of curvature is different from the first secondary radius of curvature. In some embodiments, the first main radius of curvature is greater than the first secondary radius of curvature. In some embodiments, the first sub - portion aligns with one of the first red light - emitting diode, the first green light - emitting diode, and the first blue light - emitting diode. In some embodiments, the light - emitting diode structure further includes a second light - emitting structure beside the first light - emitting structure. The second light - emitting structure includes a second red light - emitting diode, a second green light - emitting diode, a second blue light - emitting diode, and a second focusing optical element. The second red light - emitting diode, the second green light - emitting diode, and the second blue light - emitting diode are on the substrate. The second focusing optical element covers the second red light - emitting diode, the second green light - emitting diode, and the second blue light - emitting diode, wherein the second focusing optical element includes a second main portion having a second principal radius of curvature and a second sub - portion having a second secondary radius of curvature, the second sub - portion is located on the second main portion, and the second principal radius of curvature is different from the second secondary radius of curvature. In some embodiments, the first sub - portion deviates from the center of the first main portion in a direction away from the second sub - portion, and the second sub - portion deviates from the center of the second main portion in a direction away from the first sub - portion. In some embodiments, the center of the first sub - portion aligns with a first one of the first red light - emitting diode, the first green light - emitting diode, and the first blue light - emitting diode, the center of the second sub - portion aligns with a second one of the second red light - emitting diode, the second green light - emitting diode, and the second blue light - emitting diode, and the emission color of the first one is different from the emission color of the second one. To make the description of the present disclosure more detailed and complete, the aspects and specific embodiments of the embodiments are described illustratively below. This does not limit the embodiments of the present disclosure to the only form. The embodiments of the present disclosure can be combined or replaced with each other in beneficial cases, and other embodiments can be added without further explanation. Spatial relative terms, such as above and below, etc., may be used in the present disclosure to describe the relationship between one element or feature and another element or feature in the figure. In addition to the directions described in the figure, the spatial relative terms are intended to cover different directions when the device is in use or operation. For example, the device may be oriented in other ways (such as rotated 90 degrees or other directions, etc.). Therefore, the spatial relative terms in the present disclosure can be interpreted correspondingly. In the present disclosure, unless otherwise stated, the same or similar element numbers in different figures refer to the same or similar elements formed of the same or similar materials by the same or similar methods. As used herein, terms such as "about," "approximate," "close to," "substantially," or "essentially" include the stated numerical value, feature, and the range of deviation of the numerical value and feature that can be understood by those of ordinary skill in the art. For example, considering errors of numerical values, features, etc., the foregoing terms can represent values within one or more standard deviations of the stated numerical value (e.g., values within ±30%, ±20%, ±15%, ±10%, or ±5%), or represent the deviation covered by the feature in practical operation (e.g., the description of "substantially parallel" can represent being close to parallel in practice rather than ideally perfectly parallel). In addition, the acceptable range of deviation can be selected according to the nature of measurement or other properties, rather than applying one range of deviation to all numerical values and features. The present disclosure provides a light-emitting diode structure. The light-emitting diode structure includes a substrate, and a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure disposed on the substrate. The first light-emitting structure includes a first light-emitting diode and a first focusing optical element, wherein the first focusing optical element is disposed on the first light-emitting diode. The second light-emitting structure includes a second light-emitting diode and a second focusing optical element, wherein the second focusing optical element is disposed on the second light-emitting diode. The third light-emitting structure includes a third light-emitting diode and a third focusing optical element, wherein the third focusing optical element is disposed on the third light-emitting diode. The foregoing first light-emitting structure, second light-emitting structure, and third light-emitting structure are arranged along a first direction and are offset in a second direction perpendicular to the first direction. Next, the foregoing light-emitting diode structure will be described in detail according to embodiments. Referring to FIGS. 1A to 1C, the light-emitting diode structure 100 includes a substrate 101, a first light-emitting structure 111, a second light-emitting structure 112, and a third light-emitting structure 113, wherein FIGS. 1B and 1C are cross-sectional views cut along line A-A and line B-B of the perspective top view of FIG. 1A, respectively. Next, the foregoing elements will be described in sequence. First, the substrate 101 will be described, and reference can be made to FIGS. 1A to 1C. The substrate 101 includes a circuit (not shown in the figures) for driving the light-emitting diodes (including a first light-emitting diode 121, a second light-emitting diode 122, and a third light-emitting diode 123) in the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113 to emit light, such as including transistors that can drive the light-emitting diodes to emit light by turning on and off. In some embodiments, the circuits independently control their corresponding light-emitting diodes to cause specific light-emitting diodes to emit light and specific light-emitting diodes not to emit light according to requirements, such as causing light-emitting diodes with specific emission colors and / or emission angles to emit light, etc. Next, the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113 will be described, and reference may be made to FIGS. 1A to 1C. The first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113 are disposed on the substrate 101 and respectively include a first light-emitting diode 121, a second light-emitting diode 122, and a third light-emitting diode 123 to serve as display light sources. The first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113 further respectively include a first focusing optical element 131, a second focusing optical element 132, and a third focusing optical element 133 each disposed on the corresponding first light-emitting diode 121, second light-emitting diode 122, and third light-emitting diode 123 to regulate the focusing degree of the light emitted by the light-emitting diode, for example, to regulate it to different light-emitting angles according to requirements. In some embodiments, as shown in FIG. 1A, the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113 are arranged along the first direction X and are offset in the second direction Y perpendicular to the first direction X so that the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 have sufficient volume to regulate the light emitted by the light-emitting diode to the required focusing degree, and the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 are close enough to improve the display resolution. In some embodiments, the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 are each a micro light-emitting diode, and their sizes are each less than about 100 microns. Continue to describe the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113, and reference may be made to FIGS. 1A to 1C. In some embodiments, the second focusing optical element 132 has an edge tangent T1 parallel to the second direction Y extending through the first focusing optical element 131 or the third focusing optical element 133, so that the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 are sufficiently close in the first direction X of the substrate 101. In some embodiments, the second focusing optical element 132 further has an edge tangent T2 parallel to the first direction X extending through the first focusing optical element 131 and / or the third focusing optical element 133, so that the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 are sufficiently close in the second direction Y of the substrate 101. In some embodiments, the center of the first light-emitting structure 111 is connected to the center of the third light-emitting structure 113 as a first connection line C1, the center of the second light-emitting structure 112 is connected to the center of the third light-emitting structure 113 as a second connection line C2, and the included angle θ between the first connection line C1 and the second connection line C2 is 30° to 60°, such as 30°, 35°, 40°, 45°, 50°, 55°, or 60°. In some embodiments, the first distance P1 between the center of the first light-emitting structure 111 and the center of the second light-emitting structure 112 in the first direction X is 20 µm to 40 µm, such as 20 µm, 30 µm, or 40 µm; and the second distance P2 between the center of the second light-emitting structure 112 and the center of the third light-emitting structure 113 in the first direction X is 20 µm to 40 µm, such as 20 µm, 30 µm, or 40 µm. In some embodiments, the first overlapping length L1 of the projections of the first light-emitting structure 111 and the second light-emitting structure 112 in the second direction Y is 0.1 µm to 10 µm, such as 0.1 µm, 0.5 µm, 1 µm, 5 µm, or 10 µm; and the second overlapping length L2 of the projections of the second light-emitting structure 112 and the third light-emitting structure 113 in the second direction Y is 0.1 µm to 10 µm, such as 0.1 µm, 0.5 µm, 1 µm, 5 µm, or 10 µm. Continue to describe the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113, and reference may be made to FIGS. 1A to 1C. In some embodiments, the areas of the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 on the substrate 101 each completely cover or are larger than the areas of the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 on the substrate 101, so as to effectively and as expected regulate the angle of the light emitted by the light-emitting diodes. In some embodiments, the centers of the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 are respectively aligned with the centers of the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123, so as to effectively and as expected regulate the angle of the light emitted by the light-emitting diodes. Continue to describe the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113, and reference can be made to FIGS. 1A to 1C. In some embodiments, the first angle of the light emitted by the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 is adjusted by the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 to form a second angle smaller than the first angle, so as to achieve the effect of focusing. In some embodiments, the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 are each a plano-convex lens. In some embodiments, the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 each have a curved surface convex in a direction away from the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123. In some embodiments, the radius of curvature of the curved surface of the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 is each 10 µm to 50 µm, such as 10 µm, 20 µm, 30 µm, 40 µm, or 50 µm. If the radius of curvature is too small, it may cause over-focusing, resulting in a large error in the light-emitting angle and causing an unexpected displacement of the display screen. If the radius of curvature is too large, it may not have a significant effect on regulating the light-emitting angle. In some embodiments, the first maximum width W1 of the first focusing optical element 131 is 25 µm to 50 µm, such as 25 µm, 30 µm, 35 µm, 40 µm, 45 µm, or 50 µm; the second maximum width W2 of the second focusing optical element 132 is 25 µm to 50 µm, such as 25 µm, 30 µm, 35 µm, 40 µm, 45 µm, or 50 µm; and the third maximum width W3 of the third focusing optical element 133 is 25 µm to 50 µm, such as 25 µm, 30 µm, 35 µm, 40 µm, 45 µm, or 50 µm. If the aforementioned width is too small, it may cause the radius of curvature of the curved surface to be too small and cause over-focusing. If the aforementioned width is too large, it may cause the radius of curvature of the curved surface to be too large and not have a significant effect on focusing, and may also reduce the display resolution due to the excessive distance between the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123. In some embodiments, the first maximum width W1 and the second maximum width W2 are each 1.1 times to 2 times the first pitch P1, such as 1.1 times, 1.5 times, or 2 times; and the second maximum width W1 and the third maximum width W3 are each 1.1 times to 2 times the second pitch P2, such as 1.1 times, 1.5 times, or 2 times. Continue to describe the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113, and reference may be made to FIGS. 1A to 1C. In some embodiments, a first distance D1 between the lower surface of the first focusing optical element 131 and the upper surface of the first light-emitting diode 121 is from 10 µm to 150 µm, such as 10 µm, 50 µm, 100 µm, or 150 µm; a second distance D2 between the lower surface of the second focusing optical element 132 and the upper surface of the second light-emitting diode 122 is from 10 µm to 150 µm, such as 10 µm, 50 µm, 100 µm, or 150 µm; and a third distance D3 between the lower surface of the third focusing optical element 133 and the upper surface of the third light-emitting diode 123 is from 10 µm to 150 µm, such as 10 µm, 50 µm, 100 µm, or 150 µm. If the aforementioned distances are too small, the error in the light-emitting angles regulated by the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 may be large, resulting in an unexpected displacement of the display screen. If the aforementioned distances are too large, it may have no significant effect on adjusting the light-emitting angles. In some embodiments, a ratio of the first distance D1 to the radius of curvature of the first focusing optical element 131 is preferably from 0.1 to 4, such as 0.1, 0.5, 1, 2, 3, or 4; a ratio of the second distance D2 to the radius of curvature of the second focusing optical element 132 is preferably from 0.1 to 4, such as 0.1, 0.5, 1, 2, 3, or 4; and a ratio of the third distance D3 to the radius of curvature of the third focusing optical element 133 is preferably from 0.1 to 4, such as 0.1, 0.5, 1, 2, 3, or 4. Continue to describe the first light-emitting structure 111, the second light-emitting structure 112, and the third light-emitting structure 113, and reference may be made to FIGS. 1A to 1C. In some embodiments, the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 are selected from the group consisting of a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode. In some embodiments, the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 have different light-emitting colors. For example, the first light-emitting diode 121 is red, the second light-emitting diode 122 is green, and the third light-emitting diode 123 is blue, so as to regulate the light-emitting angles of red, green, and blue light through the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133, and thus obtain various colored lights that not only meet the expected angles but also have good resolution. In some embodiments, the light-emitting diode structure 100 may further include a transparent layer 102, and reference may be made to FIGS. 1A to 1C. The transparent layer 102 is located between the first light-emitting diode 121, the second light-emitting diode 122, and the third light-emitting diode 123 and the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 to serve as a medium for light transmission. In some embodiments, the refractive index of the transparent layer 102 is less than the refractive indices of the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 to increase the amount of light incident on the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133. In some embodiments, the light-emitting diode structure 100 may further include a protective layer 103, and reference may be made to FIGS. 1A to 1C. The protective layer 103 is located on the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 to serve as a protective structure for the elements that may be thereunder and to provide a flat surface for the elements that may be located thereon. In some embodiments, the refractive index of the protective layer 103 is less than the refractive indices of the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133 to increase the amount of light exiting the first focusing optical element 131, the second focusing optical element 132, and the third focusing optical element 133. The present disclosure also provides a light-emitting diode structure. The light-emitting diode structure includes a substrate and at least one first light-emitting structure. The at least one first light-emitting structure includes at least one first red light-emitting diode, a first green light-emitting diode, a first blue light-emitting diode, and a first focusing optical element. The at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode are on the substrate. The first focusing optical element completely covers the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode. The foregoing light-emitting diode structure will be described in detail according to embodiments hereinafter. Reference may be made to FIGS. 2A to 7. The light-emitting diode structure 200 includes a substrate 201 and at least one first light-emitting structure 211A, wherein FIG. 2B is a cross-sectional view cut along line C-C of the perspective top view of FIG. 2A, and FIGS. 3A to 3B, 4A to 4B, 5, and 6 are perspective top views according to the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment, respectively. The foregoing elements will be described in sequence hereinafter. First, the substrate 201 will be described, and reference can be made to FIGS. 2A to 6. The substrate 201 is basically the same as the substrate 101 described above, including a circuit (not shown in the figures) for driving the light-emitting diodes to emit light. However, the circuit of the substrate 201 drives the light-emitting diodes in at least one first light-emitting structure 211A (including at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A) and the light-emitting diodes in at least one second light-emitting structure 211B (including at least one second red light-emitting diode 221B, a second green light-emitting diode 222B, and a second blue light-emitting diode 223B) to be described below to emit light. In addition, the features of the substrate 201 and its features related to the light-emitting diodes can be referred to above, and will not be elaborated here. Next, at least one first light-emitting structure 211A will be described, and reference can be made to FIGS. 2A to 6. At least one first light-emitting structure 211A includes at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A disposed on the substrate 201 as a light source for displaying various color lights. At least one first light-emitting structure 211A further includes a single first focusing optical element 231A continuously and completely covering at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A to effectively and as expected regulate the focusing degree of the light emitted by the light-emitting diodes, such as regulating to different light-emitting angles according to requirements. In some embodiments, the area of the first focusing optical element 231A on the substrate 201 is larger than the area of at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A on the substrate 201. In some embodiments, the center of the first focusing optical element 231A is aligned with the geometric center of at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A. In some embodiments, at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A are each micro light-emitting diodes, and their sizes are each less than about 100 micrometers. It should be noted that the arrangement and number of at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A are not limited to the linear shape and one each shown in FIGS. 2A to 2B, and may include the shapes and numbers in the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment to be described in detail below. Continuing to describe at least one first light-emitting structure 211A, reference may be made to FIGS. 2A to 6. In some embodiments, the first angle of the light emitted by at least one first red light-emitting diode 221A, first green light-emitting diode 222A, and first blue light-emitting diode 223A is adjusted by the first focusing optical element 231A to form a second angle smaller than the first angle, so as to achieve the effect of focusing. In some embodiments, the first focusing optical element 231A is a semi-convex lens. In some embodiments, the first focusing optical element 231A has a curved surface protruding in a direction away from at least one first red light-emitting diode 221A, first green light-emitting diode 222A, and first blue light-emitting diode 223A. In some embodiments, the radius of curvature of the curved surface of the first focusing optical element 231A is 30 µm to 60 µm, such as 30 µm, 35 µm, 40 µm, 45 µm, 50 µm, 55 µm, or 60 µm. If the radius of curvature is too small, it may cause over-focusing, resulting in a large error in the light-emitting angle and an unexpected displacement of the display screen. If the radius of curvature is too large, it may not have a significant effect on adjusting the light-emitting angle. In some embodiments, the maximum width W4 of the first focusing optical element 231A is 50 µm to 100 µm, such as 50 µm, 60 µm, 70 µm, 80 µm, 90 µm, or 100 µm. If the width is too small, the radius of curvature of the curved surface may be too small, causing over-focusing of the light. If the width is too large, the radius of curvature of the curved surface may be too large, and it may not have a significant effect on focusing. Continuing to describe at least one first light-emitting structure 211A, reference may be made to FIGS. 2A to 6. In some embodiments, the distance D4 between the lower surface of the first focusing optical element 231A and the upper surfaces of at least one first red light-emitting diode 221A, first green light-emitting diode 222A, and first blue light-emitting diode 223A is 10 µm to 150 µm, such as 10 µm, 30 µm, 50 µm, 70 µm, 90 µm, 110 µm, 130 µm, or 150 µm. If the distance is too small, the error in the light-emitting angle adjusted by the first focusing optical element 231A may be large, resulting in an unexpected displacement of the display screen. If the distance is too large, it may not have a significant effect on adjusting the light-emitting angle. In some embodiments, the light-emitting diode structure 200 may further include a transparent layer 202, and reference may be made to FIGS. 2A to 6. The features of the transparent layer 202 and its features related to at least one first red light-emitting diode 221A, first green light-emitting diode 222A, first blue light-emitting diode 223A, and first focusing optical element 231A are substantially the same as those of the transparent layer 102 and its features related to the first light-emitting diode 121, second light-emitting diode 122, third light-emitting diode 123, first focusing optical element 131, second focusing optical element 132, and third focusing optical element 133 described above. Therefore, reference may be made in detail to the above, and details are not repeated here. In some embodiments, the light-emitting diode structure 200 may further include a protective layer 203, and reference may be made to FIGS. 2A to 6. The features of the protective layer 203 and its features related to the first focusing optical element 231A are substantially the same as those of the protective layer 103 and its features related to the first focusing optical element 131, second focusing optical element 132, and third focusing optical element 133 described above. Therefore, reference may be made in detail to the above, and details are not repeated here. Next, possible deformations of the above-described light-emitting diode structure 200 will be described in detail with specific examples. Without further explanation, the above features are applicable to the following deformations. Therefore, reference may be made to the above for related features, and details may not be repeated below. In the first embodiment (refer to FIGS. 3A to 3B), at least one first red light-emitting diode 221A, first green light-emitting diode 222A, and first blue light-emitting diode 223A are arranged in a quadrilateral arrangement, so as to effectively gather the light-emitting diodes together to improve the resolution, and avoid problems such as large light-emitting angle errors and / or light-emitting angle deviation from the center of the first focusing optical element 231A caused by the light-emitting diodes being too close to the edge of the first focusing optical element 231A (as shown in FIG. 7, the light-emitting angle deviates to form an asymmetric light-emitting pattern, which will be described in detail later). That is to say, the quadrilateral arrangement improves the display resolution and avoids display screen displacement, etc. In some embodiments, the number of at least one first red light-emitting diode 221A is plural (for example, two as shown in the figure), at least one first red light-emitting diode 221A is located on the diagonal of the quadrilateral arrangement, and the first green light-emitting diode 222A and the first blue light-emitting diode 223A are located on the other diagonal of the quadrilateral arrangement, so as to avoid problems such as display unevenness (Line Mura) caused by the at least one first red light-emitting diode 221A being too adjacent in the quadrilateral arrangement. In some embodiments, the first total top view area of at least one first red light-emitting diode 221A is larger than the second total top view area of the first green light-emitting diode 222A and the third total top view area of the first blue light-emitting diode 223A, so as to increase the light-emitting amount of the red light-emitting diode with relatively poor light-emitting efficiency, and thus improve the display quality. In some embodiments, the first total top view area is preferably 1.5 to 4 times the second total top view area (or the third total top view area), such as 1.5 times, 2 times, 3 times, or 4 times, etc. In the second embodiment (refer to FIGS. 4A to 4B), at least one first red light-emitting diode 221A, first green light-emitting diode 222A, and first blue light-emitting diode 223A are arranged in a triangular arrangement, so as to effectively gather the light-emitting diodes together, and thus improve the display resolution and avoid display screen displacement, etc. as described in the first embodiment. Referring to the above in detail, it will not be repeated here. In some embodiments, the number of at least one first red light-emitting diode 221A is plural or one as shown in FIGS. 4A to 4B. In the third embodiment (refer to FIG. 5), the arrangement of at least one first red light-emitting diode 221A, the first green light-emitting diode 222A, and the first blue light-emitting diode 223A is a triangular arrangement (viewed from the geometric centers of at least one first red light-emitting diode 221A, the first green light-emitting diode 222A, and the first blue light-emitting diode 223A as the arrangement points), so as to effectively gather the light-emitting diodes together, and thus improve the display resolution and avoid display screen displacement as described in the first embodiment. In some embodiments, the first total top view area of at least one first red light-emitting diode 221A is larger than the second total top view area of the first green light-emitting diode 222A and the third total top view area of the first blue light-emitting diode 223A, so as to increase the light output of the red light-emitting diode with relatively poor light extraction efficiency, and thus improve the display quality. In some embodiments, the first total top view area is preferably 1.5 to 4 times the second total top view area (or the third total top view area), such as 1.5 times, 2 times, 3 times, or 4 times, etc. In some embodiments, at least one first red light-emitting diode 221A is a single and continuous whole. In the fourth embodiment (refer to FIG. 6), the arrangement of at least one first red light-emitting diode 221A, the first green light-emitting diode 222A, and the first blue light-emitting diode 223A is a linear arrangement, so as to simplify the manufacturing process and make it easier to implement. In some embodiments, the number of at least one first red light-emitting diode 221A is plural or one as shown in FIG. 6. In some embodiments, reference may be made to FIGS. 3A to 6. The light-emitting diode structure 200 may further include at least one second light-emitting structure 211B beside at least one first light-emitting structure 211A. The at least one second light-emitting structure 211B is substantially the same as the at least one first light-emitting structure 211A. For example, it includes at least one second red light-emitting diode 221B, a second green light-emitting diode 222B, a second blue light-emitting diode 223B, and a second focusing optical element 231B corresponding to at least one first red light-emitting diode 221A, a first green light-emitting diode 222A, a first blue light-emitting diode 223A, and a first focusing optical element 231A respectively. Therefore, reference may be made in detail to the above, and details are not repeated here. However, the first arrangement A of at least one first red light-emitting diode 221A, the first green light-emitting diode 222A, and the first blue light-emitting diode 223A may be the same as the second arrangement B of at least one second red light-emitting diode 221B, the second green light-emitting diode 222B, and the second blue light-emitting diode 223B (for example, refer to FIG. 3A) or different (for example, refer to FIGS. 3B to 6). The adjacent at least one first light-emitting structure 211A and at least one second light-emitting structure 211B complement each other's deficiencies through the arrangement of their respective light-emitting diodes. For example, they complement the difference in the light extraction efficiency of different light types and / or complement the light extraction angle displacement as shown in FIG. 7, etc., so that the display quality is further improved. For example, it avoids display screen displacement, improves display resolution, improves display uniformity, etc. Next, the first arrangement A and the second arrangement B will be described in detail with reference to the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment. In the first embodiment (reference may be made to FIGS. 3A to 3B), the preferred first arrangement A and second arrangement B are a first quadrilateral arrangement and a second quadrilateral arrangement respectively, where the first quadrilateral arrangement is substantially the same as the second quadrilateral arrangement (as shown in FIG. 3A) or the first quadrilateral arrangement and the second quadrilateral arrangement are left-right mirror images of each other in a top view (as shown in FIG. 3B). In the second embodiment (reference may be made to FIGS. 4A to 4B), the preferred first arrangement A is different from the second arrangement B. The first arrangement A is a first triangular arrangement, the second arrangement B is a second triangular arrangement, and the second triangular arrangement is the first triangular arrangement rotated clockwise (as shown in FIG. 4A) or counterclockwise (as shown in FIG. 4B) by 40° to 80° along a direction perpendicular to the substrate, such as 40°, 50°, 60°, 70°, or 80°, and more preferably 50° to 70°. In the third embodiment (refer to FIG. 5), the preferred first arrangement A is different from the second arrangement B, wherein at least one first red light-emitting diode 221A, a second green light-emitting diode 222B, and a second blue light-emitting diode 223B are arranged on the substrate 201 along a first direction DIR1, and at least one second red light-emitting diode 221B, a first green light-emitting diode 222A, and a first blue light-emitting diode 223A are arranged on the substrate along a second direction DIR2 that is different from but parallel to the first direction DIR1. Therefore, at least one first red light-emitting diode 221A and at least one second red light-emitting diode 221B are not on the same extension line, avoiding the problem of uneven display. In the fourth embodiment (refer to FIG. 6), the preferred first arrangement A is different from the second arrangement B. The number of at least one first light-emitting structure 211A is plural and is repeatedly arranged on the substrate 201 along a first direction DIR3, and the number of at least one second light-emitting structure 211B is plural and is arranged on the substrate 201 along a second direction DIR4 that is different from but parallel to the first direction DIR3. The first arrangement A is a first linear arrangement, the second arrangement B is a second linear arrangement, and the first linear arrangement is opposite to the second linear arrangement. Therefore, a pair of the closest adjacent light-emitting diodes (such as the first blue light-emitting diode 223A on the left side and at least one first red light-emitting diode 221A on the right side in the figure) in at least one first light-emitting structure 211A that are under different first focusing optical elements 231A and a pair of the closest adjacent light-emitting diodes (such as at least one second red light-emitting diode 221B on the left side and the second blue light-emitting diode 223B on the right side in the figure) in at least one second light-emitting structure 211B that are under different second focusing optical elements 231B can complement each other's light-emitting light patterns. For example, referring to FIG. 7, since the aforementioned pair of the closest adjacent light-emitting diodes are located at the edges of the first focusing optical element 231A or the second focusing optical element 231B, the light-emitting angles of this pair of light-emitting diodes are offset from the center of the light-emitting angle (corresponding to the position of 0°) as shown by the non-symmetric light pattern curves C3 and C4 in FIG. 7, but the directions of the two offsets are opposite. Therefore, when the light-emitting diodes are arranged as shown in FIG. 6, the two non-symmetric curves C3 and C4 can be superimposed to complement each other into a symmetric light-emitting light pattern, improving the problem of displacement. In addition, by making the first linear arrangement opposite to the second linear arrangement, the display uniformity can also be improved. The present disclosure also provides a light-emitting diode structure. The light-emitting diode structure includes a substrate and a first light-emitting structure. The first light-emitting structure includes a first red light-emitting diode, a first green light-emitting diode, a first blue light-emitting diode, and a first focusing optical element. The first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode are on the substrate. The first focusing optical element covers the first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode, wherein the first focusing optical element includes a first main portion having a first main radius of curvature and a first secondary portion having a first secondary radius of curvature, and the first main radius of curvature is greater than the first secondary radius of curvature. Next, the foregoing light-emitting diode structure will be described in detail according to embodiments. Referring to FIGS. 8 to 9, the light-emitting diode structure 300 includes a substrate 301 and a first light-emitting structure 311A. The foregoing elements will be described in sequence below. First, the substrate 301 will be described, and reference may be made to FIGS. 8 to 9. The substrate 301 is substantially the same as the substrate 101 described above and includes a circuit (not shown in the figures) for driving the light-emitting diodes to emit light. However, the circuit of the substrate 301 drives the light-emitting diodes in the first light-emitting structure 311A (including the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A) and the light-emitting diodes in the second light-emitting structure 311B (including the second red light-emitting diode 321B, the second green light-emitting diode 322B, and the second blue light-emitting diode 323B), which will be described below, to emit light. In addition, the features of the substrate 301 and its features related to the light-emitting diodes may be referred to above, and will not be repeated here. Next, the first light-emitting structure 311A will be described, and reference may be made to FIGS. 8 to 9. The first light-emitting structure 311A includes a first red light-emitting diode 321A, a first green light-emitting diode 322A, and a first blue light-emitting diode 323A disposed on a substrate 201 to serve as a light source for displaying various color lights. The first light-emitting structure 311A further includes a single first focusing optical element 331A continuously and completely covering the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A to effectively and as expected control the focusing degree of the light emitted by the light-emitting diodes, such as controlling to different light-emitting angles according to requirements. In some embodiments, the area of the first focusing optical element 331A on the substrate 301 is larger than the area of the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A on the substrate 301. In some embodiments, the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A are each a micro light-emitting diode, and their sizes are each less than about 100 microns. It should be noted that the arrangement and the respective numbers of the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A are not limited to the linear shape and one each shown in FIGS. 8 to 9, and may include the shapes and numbers in the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment described in detail above. That is to say, the first focusing optical element 331A can replace the first focusing optical element 231A and / or the second focusing optical element 231B described above and be applied to the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment. Continuing to describe the first light-emitting structure 311A, and reference may be made to FIGS. 8 to 9. The first focusing optical element 331A includes a first main portion 341A having a first main radius of curvature and a first sub-portion 342A located on the first main portion 341A and having a first sub-radius of curvature, wherein the first main radius of curvature is different from the first sub-radius of curvature. Therefore, by positioning the first sub-portion 342A at different positions on the first main portion 341A, more diverse control of the light-emitting angles can be obtained. In some embodiments, the center of the first main portion 341A is aligned with the geometric centers of the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A. In some embodiments, the center of the first sub-portion 342A is aligned with one of the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A for further control of a specific light-emitting diode. In some embodiments, the first sub-portion 342A is aligned with the first red light-emitting diode 321A to enhance the control of the red light-emitting diode with relatively poor light-emitting efficiency. Continuing to describe the first light-emitting structure 311A, reference may be made to FIGS. 8 to 9. In some embodiments, the projected area of the first sub-part 342A on the substrate 301 is smaller than the projected area of the first main part 341A on the substrate 301, such that the projected area of the first focusing optical element 331A on the substrate 301 is substantially equal to the projected area of the first main part 341A on the substrate 301. Therefore, the distance between the first light-emitting structure 311A and other light-emitting structures (such as the second light-emitting structure 311B to be described in detail below) does not increase the area occupied by the first focusing optical element 331A on the surface of the substrate 301 due to the addition of the first sub-part 342A that can further regulate the light-emitting angle. That is to say, the distance between the first light-emitting structure 311A and other light-emitting structures can be reduced to increase the resolution, while the ability of the first focusing optical element 331A to regulate the light-emitting angle is also significantly improved. Continue to describe the first light-emitting structure 311A, and reference may be made to FIGS. 8 to 9. In some embodiments, the first angle of the light emitted by the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A is adjusted by the first focusing optical element 331A to form a second angle smaller than the first angle, so as to achieve the focusing effect. In some embodiments, the first main part 341A and the first sub-part 342A of the first focusing optical element 331A are each a plano-convex lens. In some embodiments, the first main part 341A and the first sub-part 342A each have a curved surface protruding in a direction away from the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A. In some embodiments, the first main radius of curvature of the first main part 341A is greater than the first sub-radius of curvature of the first sub-part 342A, so that the focusing degree of the first sub-part 342A is greater than the focusing degree of the first main part 341A. In some embodiments, the first main radius of curvature is 30 µm to 60 µm, such as 30 µm, 35 µm, 40 µm, 45 µm, 50 µm, 55 µm or 60 µm, and the first sub-radius of curvature is 5 µm to 30 µm, such as 5 µm, 10 µm, 15 µm, 20 µm, 25 µm or 30 µm. If the aforementioned radius of curvature is too small, it may cause excessive focusing, resulting in a large light-emitting angle error and an unexpected displacement of the display screen. If the aforementioned radius of curvature is too large, it may have no significant effect on controlling the light-emitting angle. In some embodiments, the maximum width W5 of the first main part 341A is 50 µm to 100 µm, such as 50 µm, 60 µm, 70 µm, 80 µm, 90 µm or 100 µm, and the maximum width W6 of the first sub-part 342A is 10 µm to 40 µm, such as 10 µm, 15 µm, 20 µm, 25 µm, 30 µm, 35 µm or 40 µm. If the aforementioned width is too small, the radius of curvature of the curved surface may be too small, resulting in excessive focusing of light. If the aforementioned width is too large, the radius of curvature of the curved surface may be too large, having no significant effect on the focusing function. Continuing to describe the first light-emitting structure 311A, reference may be made to FIGS. 8 to 9. In some embodiments, the distance D5 between the lower surface of the first focusing optical element 331A and the upper surfaces of the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A is 10 µm to 150 µm, such as 10 µm, 30 µm, 50 µm, 70 µm, 90 µm, 110 µm, 130 µm, or 150 µm. If the distance is too small, the error in the light-emitting angle regulated by the first focusing optical element 331A may be large, resulting in an unexpected display screen displacement. If the distance is too large, it may have no significant effect on adjusting the light-emitting angle. In some embodiments, the light-emitting diode structure 300 may further include a transparent layer 302, and reference may be made to FIGS. 8 to 9. The characteristics of the transparent layer 302 and its characteristics related to the first red light-emitting diode 321A, the first green light-emitting diode 322A, the first blue light-emitting diode 323A, and the first focusing optical element 331A are substantially the same as the characteristics of the transparent layer 202 above and its characteristics related to at least one first red light-emitting diode 221A, the first green light-emitting diode 222A, the first blue light-emitting diode 223A, and the first focusing optical element 231A. Therefore, details may be referred to above and will not be repeated here. In some embodiments, the light-emitting diode structure 300 may further include a protective layer 303, and reference may be made to FIGS. 8 to 9. The characteristics of the protective layer 303 and its characteristics related to the first focusing optical element 331A are substantially the same as the characteristics of the protective layer 203 above and its characteristics related to the first focusing optical element 231A. Therefore, details may be referred to above and will not be repeated here. In some embodiments, and with reference to FIG. 9, the light-emitting diode structure 300 further includes a second light-emitting structure 311B beside the first light-emitting structure 311A. The second light-emitting structure 311B is substantially the same as the first light-emitting structure 311A. For example, it includes a second red light-emitting diode 321B, a second green light-emitting diode 322B, a second blue light-emitting diode 323B, and a second focusing optical element 331B corresponding to the first red light-emitting diode 321A, the first green light-emitting diode 322A, the first blue light-emitting diode 323A, and the first focusing optical element 331A respectively. Therefore, details can be referred to the above, and will not be elaborated here. However, the position of the second sub-part 342B on the second main part 341B of the second focusing optical element 331B may be the same as or different from the position of the first sub-part 342A on the first main part 341A of the first focusing optical element 331A (e.g., refer to FIG. 9). The adjacent first light-emitting structure 311A and second light-emitting structure 311B can not only complement each other's deficiencies through the arrangement of their respective light-emitting diodes as described above, but also further adjust the deficiencies through the first sub-part 342A and the second sub-part 342B (detailed later), so that the display quality is further improved, such as avoiding display screen displacement, improving display resolution, improving display uniformity, etc. Next, the positional relationship between the first sub-part 342A and the second sub-part 342B will be described in detail embodiments. In some embodiments, and with reference to FIG. 9, the first sub-part 342A deviates from the center of the first main part 341A in a direction away from the second sub-part 342B, and the second sub-part 342B deviates from the center of the second main part 341B in a direction away from the first sub-part 342A, so that the first sub-part 342A and the second sub-part 342B are respectively located at the edges of the first focusing optical element 331A and the second focusing optical element 331B to compensate for problems such as display displacement that may be caused by the edges. And because the first sub-part 342A and the second sub-part 342B are symmetrically away from each other, problems such as display non-uniformity can be avoided. In some embodiments, and with reference to FIG. 9, the center of the first sub-part 342A aligns with the first one of the first red light-emitting diode 321A, the first green light-emitting diode 322A, and the first blue light-emitting diode 323A, the center of the second sub-part 342B aligns with the second one of the second red light-emitting diode 321B, the second green light-emitting diode 322B, and the second blue light-emitting diode 323B, and the emission color of the first one is different from the emission color of the second one, so that the first sub-part 342A and the second sub-part 342B regulate different types of light-emitting diodes to avoid problems such as display non-uniformity. The light-emitting diode structure of the present disclosure not only well regulates the light-emitting angle of the light-emitting diode, but also can improve the display quality, such as improving display resolution, avoiding display non-uniformity, and avoiding display displacement, etc. The present disclosure is described in some embodiments in considerable detail, but other embodiments may also be feasible. Therefore, the scope and spirit of the appended patent application should not be limited by the description of the embodiments contained in the present disclosure. Those of ordinary skill in the art can make modifications and changes to the present disclosure without departing from the scope and spirit of the present disclosure. As long as the foregoing modifications and changes fall within the scope and spirit of the appended patent application, the present disclosure covers such modifications and changes. 100, 200, 300: Light-emitting diode structures 101, 201, 301: Substrates 102, 202, 302: Transparent layers 103, 203, 303: Protective layers 111, 311A: First light-emitting structures 112, 311B: Second light-emitting structures 113: Third light-emitting structure 121: First light-emitting diode 122: Second light-emitting diode 123: Third light-emitting diode 131, 231A, 331A: First focusing optical elements 132, 231B, 331B: Second focusing optical elements 133: Third focusing optical element 211A: At least one first light-emitting structure 211B: At least one second light-emitting structure 221A: At least one first red light-emitting diode 222A, 322A: First green light-emitting diodes 223A, 323A: First blue light-emitting diodes 221B: At least one second red light-emitting diode 222B, 322B: Second green light-emitting diodes 223B, 323B: Second blue light-emitting diodes 321A: First red light-emitting diode 321B: Second red light-emitting diode 341A: First main portion 342A: First sub-portion 341B: Second main portion 342B: Second sub-portion A-A, B-B, C-C: Lines A: First arrangement B: Second arrangement C1: First connection C2: Second connection C3, C4: Curves D1: First distance D2: Second distance D3: Third distance D4, D5: Distances L1: First overlapping length L2: Second overlapping length P1: First pitch P2: Second pitch T1, T2: Edge tangents W1: First maximum width W2: Second maximum width W3: Third maximum width W4, W5, W6: Maximum widths X, DIR1, DIR3: First directions Y, DIR2, DIR4: Second directions θ: Included angle When reading the accompanying drawings of the present disclosure, it is recommended to understand various aspects of the present disclosure from the detailed description below. It should be noted that, in accordance with industrial standard practices, various feature dimensions may not be drawn to scale. Also, for the sake of clarity in discussion, various feature dimensions may be increased or decreased. And to simplify the drawings, conventional features and structures will be illustrated in a simple schematic manner in the figures. FIGS. 1A, 1B to 1C are respectively a top perspective view and a cross-sectional view of a light-emitting diode structure according to some embodiments of the present disclosure. FIGS. 2A and 2B are respectively a top perspective view and a cross-sectional view of a light-emitting diode structure according to some other embodiments of the present disclosure. FIGS. 3A to 3B, FIGS. 4A to 4B, FIG. 5, and FIG. 6 are respectively top perspective views of a light-emitting diode structure according to a first embodiment, a second embodiment, a third embodiment, and a fourth embodiment of the present disclosure. FIG. 7 is a graph showing the relationship between the light-emitting angle and the radiation intensity of a light-emitting diode structure according to some embodiments of the present disclosure. FIGS. 8 and 9 are cross-sectional views of a light-emitting diode structure according to some other embodiments of the present disclosure. Domestic deposit information (please note in the order of deposit institution, date, number) None Foreign deposit information (please note in the order of deposit country, institution, date, number) None 200: Light-emitting diode structure 201: Substrate 202: Transparent layer 203: Protective layer 211A: At least one first light-emitting structure 221A: At least one first red light-emitting diode 222A: First green light-emitting diode 223A: First blue light-emitting diode 231A: First focusing optical element C-C: Line

Claims

1. A light-emitting diode structure, comprising: One substrate; The system includes at least one first light-emitting structure, comprising: at least one first red light-emitting diode, one first green light-emitting diode, and one first blue light-emitting diode on the substrate; and a first focusing optical element completely covering the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode, wherein the lower surface of the first focusing optical element is at a distance from the upper surface of the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode, and the first focusing optical element has a radius of curvature, wherein the radius of curvature is 30 µm to 60 µm, and the distance is 50 µm to 150 µm; and at least one second light-emitting structure adjacent to the at least one first light-emitting structure, the at least one second light-emitting structure comprising: At least one second red light-emitting diode, one second green light-emitting diode, and one second blue light-emitting diode are on the substrate; and a second focusing optical element is covered on the at least one second red light-emitting diode, the second green light-emitting diode, and the second blue light-emitting diode, wherein a first arrangement of the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode is different from a second arrangement of the at least one second red light-emitting diode, the second green light-emitting diode, and the second blue light-emitting diode.

2. The light-emitting diode structure as described in claim 1, wherein the at least one first red light-emitting diode, the first green light-emitting diode, and the first blue light-emitting diode are arranged in a quadrilateral arrangement, a triangular arrangement, or a linear arrangement.

3. The light-emitting diode structure as claimed in claim 2, wherein the number of the at least one first red light-emitting diode is plurality of, and the at least one first red light-emitting diode is located on the diagonal of the quadrilateral arrangement.

4. The light-emitting diode structure as claimed in claim 1, wherein the top view area of ​​the at least one first red light-emitting diode is greater than the top view area of ​​the first green light-emitting diode and the top view area of ​​the first blue light-emitting diode.

5. The light-emitting diode structure as claimed in claim 1, wherein the first arrangement and the second arrangement are a first quadrilateral arrangement and a second quadrilateral arrangement, respectively, and the at least one first red light-emitting diode and the at least one second red light-emitting diode are located on the diagonals of the first quadrilateral arrangement and the second quadrilateral arrangement, respectively.

6. The light-emitting diode structure as claimed in claim 5, wherein, in a top view, the first quadrilateral arrangement and the second quadrilateral arrangement are left-right mirror images.

7. The light-emitting diode structure as claimed in claim 1, wherein the first arrangement and the second arrangement are a first triangular arrangement and a second triangular arrangement, respectively.

8. The light-emitting diode structure as claimed in claim 7, wherein the second triangular arrangement is the first triangular arrangement rotated 40° to 80° along a direction perpendicular to the substrate.

9. The light-emitting diode structure as claimed in claim 1, wherein the area of ​​the at least one first red light-emitting diode on the substrate is greater than the area of ​​the first green light-emitting diode and the first blue light-emitting diode on the substrate, and the area of ​​the at least one second red light-emitting diode on the substrate is greater than the area of ​​the second green light-emitting diode and the second blue light-emitting diode on the substrate.

10. The light-emitting diode structure as claimed in claim 9, wherein the at least one first red light-emitting diode, the second green light-emitting diode and the second blue light-emitting diode are arranged on the substrate along a first direction, and the at least one second red light-emitting diode, the first green light-emitting diode and the first blue light-emitting diode are arranged on the substrate along a second direction different from the first direction and parallel to the first direction.

11. The light-emitting diode structure as claimed in claim 1, wherein the number of the at least one first light-emitting structure is plurality and arranged on the substrate along a first direction, the number of the at least one second light-emitting structure is plurality and arranged on the substrate along a second direction different from the first direction and parallel to the first direction, the first arrangement is a first linear arrangement, and the second arrangement is a second linear arrangement.

12. The light-emitting diode structure as claimed in claim 11, wherein the first linear arrangement is the opposite of the second linear arrangement.