Display device

Abstract

This invention provides a display comprising a substrate and a plurality of sub-pixels disposed on the substrate. Each sub-pixel includes a light-emitting element, a light-transmitting structure, and a light-transmitting layer. The light-emitting element is disposed on a plane of the substrate and electrically connected to the substrate. The light-transmitting structure is disposed on the plane of the substrate and adjacent to the light-emitting element. The light-transmitting structure includes a sidewall facing the light-emitting element, and the distance between the sidewall and the plane of the substrate increases in a direction away from the light-emitting element. The light-emitting element emits light toward the sidewall of the light-transmitting structure. The light-transmitting layer is disposed on the light-transmitting structure and covers the light-emitting element and the sidewall of the light-transmitting structure.

Description

Technical Field

[0001] This invention relates to a display, and more particularly to a display comprising a solid-state light-emitting component (SSL component). Prior Technology

[0002] A light-emitting diode (LED) panel comprises an active element substrate and multiple LED elements mounted on the active element substrate. Generally, based on the characteristics of LEDs, LED panels offer advantages such as power saving, high efficiency, high brightness, and fast response time, making them a potential mainstream display panel. However, the light extraction efficiency of LED panels is limited by the light extraction efficiency of the LEDs themselves, making it difficult to improve. Summary of the Invention

[0003] Therefore, one embodiment of the present invention provides a display that helps to improve the light emission efficiency of the display.

[0004] At least one embodiment of the present invention provides a display comprising a substrate and a plurality of sub-pixels. The substrate has a plane, and the sub-pixels are disposed on the substrate, each of the sub-pixels including a light-emitting element, a light-transmitting structure, and a light-transmitting layer. The light-emitting element is disposed on the plane of the substrate and electrically connected to the substrate. The light-transmitting structure is disposed on the plane of the substrate and adjacent to the light-emitting element. The light-transmitting structure includes a first sidewall facing the light-emitting element, and the distance between the first sidewall and the plane of the substrate increases in a direction away from the light-emitting element. The light-emitting element emits light toward the first sidewall of the light-transmitting structure. The light-transmitting layer is disposed on the light-transmitting structure and covers the light-emitting element and the first sidewall of the light-transmitting structure.

[0005] In at least one embodiment of the invention, at least a portion of the light rays undergoes total internal reflection at the first sidewall.

[0006] In at least one embodiment of the present invention, the light-transmitting structure extends along a periphery of the light-emitting element and surrounds the light-emitting element.

[0007] In at least one embodiment of the present invention, each of the sub-pixels further includes at least one pair of strip-shaped light-transmitting structures disposed on the plane of the substrate and respectively located on opposite sides of the light-emitting element. The light-emitting element and the light-transmitting structures are located between the strip-shaped light-transmitting structures.

[0008] In at least one embodiment of the present invention, the strip-shaped light-transmitting structure and the light-transmitting structure have a gap, and the gap ranges from 5µm to 50µm.

[0009] In at least one embodiment of the present invention, each of the sub-pixels further includes at least one frame-shaped light-transmitting structure disposed on the plane of the substrate. The frame-shaped light-transmitting structure extends along the periphery of the light-emitting element and surrounds the light-emitting element and the light-transmitting structure.

[0010] In at least one embodiment of the present invention, the light-transmitting structure includes two strip-shaped blocks, which are located on opposite sides of the light-emitting element.

[0011] In at least one embodiment of the present invention, the display further includes at least one pair of strip-shaped light-transmitting structures disposed on the plane of the substrate and respectively located on opposite sides of the light-emitting element. The light-emitting element and the light-transmitting structures are located between the pair of strip-shaped light-transmitting structures.

[0012] In at least one embodiment of the present invention, the strip-shaped light-transmitting structure and the light-transmitting structure have a gap, and the gap ranges from 5µm to 50µm.

[0013] In at least one embodiment of the present invention, the light-transmitting structure further includes a second sidewall adjacent to the first sidewall and facing away from the light-emitting element. The distance between the second sidewall and the plane of the substrate decreases along the direction away from the light-emitting element.

[0014] In at least one embodiment of the present invention, the light-transmitting structure further includes a second sidewall and a top surface. The second sidewall faces away from the light-emitting element, and the distance between the second sidewall and the plane of the substrate decreases in the direction away from the light-emitting element. The top surface is disposed opposite to the plane of the substrate and is adjacent to the first sidewall and the second sidewall, respectively.

[0015] In at least one embodiment of the present invention, the refractive index of the light-transmitting layer is greater than the refractive index of the light-transmitting structure.

[0016] In at least one embodiment of the present invention, the display further includes a pixel separation layer disposed on a plane of the substrate and distributed between adjacent sub-pixels.

[0017] In at least one embodiment of the present invention, the sub-pixel further includes a wavelength conversion layer and a bonding layer. The wavelength conversion layer is disposed on the light-emitting element, and the bonding layer is disposed on the wavelength conversion layer, wherein the wavelength conversion layer is located between the bonding layer and the light-transmitting layer.

[0018] In at least one embodiment of the present invention, the refractive index of the light-transmitting structure is n1, the refractive index of the light-transmitting layer is n2, and the refractive index of the wavelength conversion layer is n3. An acute angle is formed between the first sidewall and the plane of the substrate. The angle is α1, and satisfies: 90° - sin⁻¹(n3 / n2) < α1. <sin -1(n1 / n2)+sin -1(n3 / n2)。

[0019] In at least one embodiment of the present invention, the included angle is greater than 35° and less than 75°.

[0020] In at least one embodiment of the present invention, the light-transmitting structure has a height, and the distance between a top surface of the light-emitting element and the plane of the substrate is less than this height.

[0021] In at least one embodiment of the present invention, the light-transmitting structure has a width, and the width falls between 5µm and 50µm.

[0022] In the above embodiments, a light-transmitting structure is provided in the sub-pixel and disposed adjacent to the light-emitting element, so that the light emitted by the light-emitting element travels towards the light-transmitting structure, thereby allowing total internal reflection to occur at the first sidewall of the light-transmitting structure. Since the distance between the first sidewall and the plane of the substrate increases along the direction away from the light-emitting element, the light, after being totally reflected by the first sidewall, can be emitted in a direction away from the plane of the substrate. In this way, the light extraction efficiency of the sub-pixel can be improved, thereby enhancing the light extraction efficiency of the display. Simple Explanation of the Diagram

[0023] The nature of the invention can be understood from the following detailed description and accompanying drawings. It should be noted that many features are not drawn to industry-standard scale. In fact, for clarity of discussion, the dimensions of various features may be arbitrarily increased or decreased. Figure 1 shows a top view of a display according to an embodiment of the present invention. Figure 2 shows a partial top view of the display in Figure 1. Figure 3 shows a cross-sectional view of the display in Figure 2 along line segment AA. Figure 4 shows a partial cross-sectional view of another embodiment of the present invention. Figure 5 shows a partial top view of another embodiment of the present invention. Figure 6 shows a partial top view of another embodiment of the present invention. Figure 7 shows a partial top view of another embodiment of the present invention. Implementation

[0024] The present invention will be described in detail with reference to the following embodiments. It should be noted that the following description of the embodiments of the present invention is for illustrative purposes only and is not intended to disclose all embodiments exhaustively or to limit the specific embodiments of the present invention. For example, the phrase "a first feature is formed on a second feature" in the description includes various implementations, including situations where the first feature and the second feature are in direct contact, and situations where an additional feature is formed between the first feature and the second feature so that they are not in direct contact. Furthermore, the same element symbols used in the drawings and specification will, as far as possible, represent the same or similar elements.

[0025] Spatially relative terms, such as "lower," "below," "below," "above," and "above," are used here to simply describe the relationship between one element or feature and another, as shown in the figure. These spatially relative terms cover not only the orientation depicted in the figure but also different orientations when using or operating the device. Furthermore, when the element is rotatable (rotating 90 degrees or other angles), the spatially relative descriptive terms used here can also be interpreted accordingly.

[0026] In the following text, to clearly present the technical features of this application, the dimensions (e.g., length, width, thickness, and depth) of the elements (e.g., layers, films, substrates, and regions) in the drawings will be enlarged proportionally. Therefore, the description and explanation of the embodiments below are not limited to the dimensions and shapes presented by the elements in the drawings, but should cover dimensions, shapes, and deviations from both caused by actual manufacturing processes and / or tolerances. For example, a flat surface shown in the drawings may have rough and / or non-linear characteristics, and an acute angle shown in the drawings may be rounded. Therefore, the elements presented in the drawings of this application are mainly for illustration and are not intended to accurately depict the actual shape of the elements, nor are they intended to limit the scope of the claims in this application.

[0027] Furthermore, the terms "approximately," "approximately," or "substantially" used in this application not only encompass explicitly stated numerical values ​​and ranges, but also the permissible deviation range understood by someone skilled in the art to which this invention pertains. This deviation range can be determined by errors that arise during measurement, such as those caused by limitations of the measurement system or process conditions. Additionally, "approximately" can indicate a deviation within one or more standard deviations of the aforementioned numerical values, such as ±30%, ±20%, ±10%, or ±5%. The terms "approximately," "approximately," or "substantially" used in this application can be chosen based on optical, etching, mechanical, or other properties to select an acceptable deviation range or standard deviation, and are not applied in isolation to all optical, etching, mechanical, and other properties using a single standard deviation.

[0028] Figure 1 is a top view of a display 100 according to an embodiment of the present invention. In various embodiments, the display 100 may be, for example, a micro LED display, a quantum dot (QD) display, or a similar display. Figure 2 is a partial top view of the display 100 in Figure 1. Notably, Figure 2 is drawn with the wavelength conversion layer and one of the electrodes (i.e., wavelength conversion layer 128 and electrode E1) in the sub-pixels omitted, and Figure 3 is a cross-sectional view along line segment AA of Figure 2. Referring to Figures 1, 2, and 3 together, the display 100 includes a substrate 110 and a plurality of sub-pixels 120. The substrate 110 has a plane 110s, and the sub-pixels 120 are disposed on the substrate 110.

[0029] Each sub-pixel 120 includes at least one light-emitting element 122, a light-transmitting structure 124, and a light-transmitting layer 126. The light-emitting element 122 is disposed on a plane 110s of the substrate 110 and is electrically connected to the substrate 110. In detail, the substrate 110 may be, for example, a thin-film transistor (TFT) substrate or a similar electronic component driving substrate. For example, the substrate 110 may be a thin-film transistor (TFT) array substrate or a similar pixel array substrate.

[0030] On the other hand, the light-emitting element 122 can be, for example, an organic light-emitting diode (OLED), a micro LED, or other similar light-emitting diode element. Referring to Figure 3, the sub-pixel 120 also includes electrodes E1 and E2, and the light-emitting element 122 is located between electrodes E1 and E2. The light-emitting element 122 can be electrically connected to the circuit layer C1 through electrode E1, and electrically connected to the substrate 110 through the circuit layer C1. In addition, the light-emitting element 122 is also electrically connected to the substrate 110 through electrode E2.

[0031] The light-emitting elements 122 can emit light L1 in different wavelength ranges. For example, these light-emitting elements 122 can be red light-emitting diodes, green light-emitting diodes, and blue light-emitting diodes, respectively, and an adjacent red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode can be regarded as a pixel (i.e., a main pixel) of the display 100. It is worth mentioning that the wavelength range of the light L1 emitted by the light-emitting elements 122 in this invention is not limited to the above (for example, at least one of the light-emitting elements 122 can also be a yellow light-emitting diode).

[0032] As shown in Figure 2, the light-transmitting structure 124 is disposed on the plane 110s of the substrate 110 and spaced apart from the light-emitting element 122. Notably, in this embodiment, the light-transmitting structure 124 extends along the periphery 122p of the light-emitting element 122 and surrounds it. In other words, the light-transmitting structure 124 forms a frame shape on the plane 110s of the substrate 110, and this frame surrounds the light-emitting element 122. Although the frame shape in this embodiment is square, the invention is not limited to this; in other embodiments, it can also be circular, triangular, or other shapes.

[0033] The light-transmitting structure 124 includes a first sidewall 124a facing the light-emitting element 122. The distance between this first sidewall 124a and the plane 110s of the substrate 110 increases along a direction D1 away from the light-emitting element 122. In other words, the first sidewall 124a of the light-transmitting structure 124 is inclined toward the direction D1 away from the light-emitting element 122, and there is an acute angle α between the first sidewall 124a and the plane 110s of the substrate 110. The light-emitting element 122 emits light L1 toward the first sidewall 124a of the light-transmitting structure 124, and at least a portion of the light L1 undergoes total internal reflection at the first sidewall 124a, while the other portion of the light L1 passes through the first sidewall 124a and enters the light-transmitting structure 124.

[0034] On the other hand, the light-transmitting structure 124 also includes a second sidewall 124b. This second sidewall 124b is adjacent to the first sidewall 124a and faces away from the light-emitting element 122. The distance between the second sidewall 124b and the plane 110s of the substrate 110 decreases along the direction D1 away from the light-emitting element 122. In other words, the second sidewall 124b of the light-transmitting structure 124 is inclined toward the direction closer to the light-emitting element 122 (i.e., the opposite of direction D1). In this embodiment, some of the light L1 that enters the light-transmitting structure 124 through the first sidewall 124a will exit the light-transmitting structure 124 through the second sidewall 124b.

[0035] It is worth noting that although the cross-section of the light-transmitting structure 124 in this embodiment is triangular, the present invention is not limited thereto. Please refer to another embodiment illustrated in FIG4, in which the cross-section of the light-transmitting structure 424 is trapezoidal. In detail, the light-transmitting structure 424 includes a first sidewall 424a, a second sidewall 424b, and a top surface 424t. The second sidewall 424b faces away from the light-emitting element 122, and the distance between the second sidewall 424b and the plane 110s of the substrate 110 decreases along the direction D1 away from the light-emitting element 122. Furthermore, the top surface 424t of the light-transmitting structure 424 is disposed opposite to the plane 110s of the substrate 110 and is adjacent to both the first sidewall 424a and the second sidewall 424b. That is, the second sidewall 424b of the light-transmitting structure 424 is not adjacent to the first sidewall 424a.

[0036] Referring back to Figure 3, each sub-pixel 120 also includes at least one pair of strip-shaped light-transmitting structures, such as strip-shaped light-transmitting structures 121, 123, and 125 in Figures 2 and 3. The strip-shaped light-transmitting structures 121, 123, and 125 are disposed on the plane 110s of the substrate 110, and each pair of strip-shaped light-transmitting structures (e.g., strip-shaped light-transmitting structure 121) is located on opposite sides of the light-emitting element 122. The light-emitting element 122 and the light-transmitting structure 124 are located between the strip-shaped light-transmitting structures 121. Furthermore, the light-emitting element 122 and the light-transmitting structure 124 are also located within the strip-shaped light-transmitting structures 123 (and 125). In other words, along the direction D1 away from the light-emitting element 122, the strip-shaped light-transmitting structures are arranged in the order of strip-shaped light-transmitting structure 121, strip-shaped light-transmitting structure 123, and strip-shaped light-transmitting structure 125.

[0037] The display 100 also includes a cover layer 130 disposed on the sub-pixel 120. Specifically, the cover layer 130 is disposed on the wavelength conversion layer 128 of the sub-pixel 120 and is connected to the wavelength conversion layer 128 via a bonding layer 129. The sub-pixel 120 is sandwiched between the substrate 110 and the cover layer 130, and the cover layer 130 may contain, for example, silicon oxide or a similar transparent material.

[0038] In this embodiment, some light rays L1 can also penetrate the light-transmitting structure 124 and undergo total internal reflection at the first sidewall 121a of the strip-shaped light-transmitting structure 121. Some light rays L1 can also sequentially penetrate the light-transmitting structure 124 and the strip-shaped light-transmitting structure 121, and undergo total internal reflection at the first sidewall 123a of the strip-shaped light-transmitting structure 123. Some light rays L1 can also penetrate the light-transmitting structure 124, the strip-shaped light-transmitting structure 121, and the strip-shaped light-transmitting structure 123, and undergo total internal reflection at the first sidewall 125a of the strip-shaped light-transmitting structure 125.

[0039] It is worth mentioning that there is a spacing p1 between the strip-shaped light-transmitting structure 121 and the light-transmitting structure 124, and this spacing p1 ranges from 5µm to 100µm. On the other hand, there is a spacing p2 between the strip-shaped light-transmitting structure 121 and the strip-shaped light-transmitting structure 123, and a spacing p3 between the strip-shaped light-transmitting structure 123 and the strip-shaped light-transmitting structure 125, and both spacing p2 and spacing p3 range from 5µm to 50µm. Although there are three pairs of strip-shaped light-transmitting structures in this embodiment, the invention is not limited to this. In other embodiments, the number of pairs of strip-shaped light-transmitting structures may also be other numbers, such as two pairs or four pairs.

[0040] In addition, the light-transmitting structure 124 has a height h1, and the distance between the top surface 122t of the light-emitting element 122 and the plane 110s of the substrate 110 is less than the height h1. For example, the height h1 of the light-transmitting structure 124 can range from 3µm to 30µm. On the other hand, the light-transmitting structure 124 also has a width w1, and the width w1 can range from 5µm to 50µm.

[0041] Please refer to another embodiment of the present invention in Figure 5. In this embodiment, the sub-pixel 520 is similar to the sub-pixel 120 in the display 100 described above. The difference between sub-pixel 520 and sub-pixel 120 is that each sub-pixel 520 further includes at least one frame-shaped light-transmitting structure 521. This frame-shaped light-transmitting structure 521 is disposed on the plane 110s of the substrate 110 (see Figure 3). The frame-shaped light-transmitting structure 521 extends along the periphery 122p of the light-emitting element 122 and surrounds the light-emitting element 122 and the light-transmitting structure 124.

[0042] Please refer to another embodiment of the present invention in Figure 6. In this embodiment, the sub-pixel 620 is similar to the sub-pixel 120 in the display 100 described above. The difference between sub-pixel 620 and sub-pixel 120 is that the light-transmitting structure 624 in sub-pixel 620 includes two strip-shaped blocks 624r, and these strip-shaped blocks 624r are located on opposite sides of the light-emitting element 122.

[0043] Each sub-pixel 620 also includes at least one pair of strip-shaped light-transmitting structures, such as strip-shaped light-transmitting structure 121, strip-shaped light-transmitting structure 123, and strip-shaped light-transmitting structure 125. The strip-shaped light-transmitting structures 121, 123, and 125 are disposed on the plane 110s of the substrate 110, and each pair of strip-shaped light-transmitting structures (e.g., strip-shaped light-transmitting structure 121) is located on opposite sides of the light-emitting element 122. The light-emitting element 122 and the light-transmitting structure 624 are located between the strip-shaped light-transmitting structures 121. The light-emitting element 122 and the light-transmitting structure 624 are also located between the strip-shaped light-transmitting structures 123 (and 125).

[0044] Referring to Figure 3, a light-transmitting layer 126 is disposed on a light-transmitting structure 124 and covers the light-emitting element 122 and the first sidewall 124a of the light-transmitting structure 124. Notably, in this embodiment, the refractive index of the light-transmitting layer 126 is greater than the refractive index of the light-transmitting structure 124. For example, the refractive index of the light-transmitting layer 126 may fall between 1.5 and 2.0, while the refractive index of the light-transmitting structure 124 may fall between 1.1 and 1.5.

[0045] The display 100 may also include a pixel separation layer 127. This pixel separation layer 127 is disposed on a plane 110s of the substrate 110 and distributed between adjacent sub-pixels 120. Specifically, the pixel separation layer 127 may be covered with a metallic material such as aluminum, silver, manganese, or copper, thereby reducing the possibility that light L1 emitted by the light-emitting element 122 in the sub-pixels 120 may pass through the pixel separation layer 127 and affect adjacent sub-pixels 120.

[0046] Referring to Figure 3, the sub-pixel 120 may further include a wavelength conversion layer 128 and a bonding layer 129. The wavelength conversion layer 128 is disposed on the light-emitting element 122, and the bonding layer 129 is disposed on the wavelength conversion layer 128. The wavelength conversion layer 128 is located between the bonding layer 129 and the light-transmitting layer 126, wherein the wavelength conversion layer 128 may contain, for example, quantum dots, fluorescent pigments, or other similar wavelength conversion materials. The bonding layer 129 may be an encapsulating adhesive, such as optically clear adhesive (OCA), or a similar light-transmitting material.

[0047] The wavelength conversion layer 128 can contain wavelength conversion materials of various colors, such as red bright spot materials or blue phosphors. In this way, when light L1 from the light-emitting element 122 enters the wavelength conversion layer 128, these wavelength conversion materials can restrict only a portion of the light L1 falling within a specific wavelength range to penetrate the wavelength conversion layer 128. For example, blue phosphors restrict light L1 with wavelengths falling within the blue light wavelength range (i.e., 400nm to 495nm) to pass through the wavelength conversion layer 128, while light L1 outside the blue light wavelength range cannot penetrate the wavelength conversion layer 128.

[0048] It is worth mentioning that the refractive index of the light-transmitting structure 124 is n1, the refractive index of the light-transmitting layer 126 is n2, and the refractive index of the wavelength conversion layer 128 is n3. To ensure that light L1 undergoes total internal reflection at the first sidewall 124a of the light-transmitting structure 124, the angle α between the first sidewall 124a and the plane 110s of the substrate 110 is α1, and this angle α1 must satisfy: 90° - sin⁻¹(n³ / n²) < α1. <sin -1(n1 / n2)+sin -1(n3 / n2)。

[0049] For example, when the refractive index n1 of the light-transmitting structure 124 falls between 1.1 and 1.5, the refractive index n2 of the light-transmitting layer 126 falls between 1.5 and 2.0, and the refractive index n3 of the wavelength conversion layer 128 falls between 1.1 and 2.0, then the angle α1 of the included angle α is greater than 35° and less than 75°.

[0050] Figure 7 illustrates another embodiment of the present invention, in which the sub-pixel 720 is similar to the sub-pixel 120 in the display 100 described above. The difference between sub-pixels 720 and 120 is that each sub-pixel 720 includes a light-emitting element 722a, a light-emitting element 722b, and light-transmitting structures 724a and 724b. Both light-emitting elements 722a and 722b are disposed on the plane 110s of the substrate 110, and the light-transmitting structure 724a is disposed on the light-emitting element 722a, while the light-transmitting structures 724b are spaced apart from the light-emitting elements 722b. In this embodiment, the light-transmitting structures 724a and 724b respectively surround the light-emitting elements 722a and 722b.

[0051] In addition, the sub-pixel 720 also includes at least one pair of strip-shaped light-transmitting structures, specifically, strip-shaped light-transmitting structure 721 and strip-shaped light-transmitting structure 723. Each pair of strip-shaped light-transmitting structures (e.g., strip-shaped light-transmitting structure 721) is located on opposite sides of the light-emitting element 722a and the light-emitting element 722b, respectively.

[0052] In summary, by incorporating a light-transmitting structure within a sub-pixel and placing it adjacent to the light-emitting element, the light emitted from the element travels towards the light-transmitting structure, allowing total internal reflection to occur at the first sidewall of the structure. Since the distance between the first sidewall and the substrate plane increases in the direction away from the light-emitting element, the light, after total internal reflection at the first sidewall, can be emitted in a direction away from the substrate plane. This increases the light extraction efficiency of the sub-pixel, thereby improving the light extraction efficiency of the display.

[0053] In addition, strip-shaped light-transmitting structures can be set on opposite sides of the light-transmitting structure, or frame-shaped light-transmitting structures can be set around the light-transmitting structure. When some of the light emitted by the light-emitting element does not undergo total internal reflection at the first sidewall of the light-transmitting structure, total internal reflection of these light rays can still be achieved through the strip-shaped or frame-shaped light-transmitting structures, further improving the light output efficiency of the sub-pixels and thus enhancing the light output effect of the display.

[0054] Although the embodiments of the present invention have been disclosed above, they are not intended to limit the embodiments of the present invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the embodiments of the present invention. Therefore, the protection scope of the embodiments of the present invention shall be determined by the appended claims.

[0055] 100: Monitor 110:Substrate 110s: Plane 120, 520, 620, 720: sub-pixel 121, 123, 125, 721, 723: Strip-shaped light-transmitting structure 122, 722a, 722b: Light-emitting elements 122p: Surroundings 122t, 424t: Top surface 124, 424, 624, 724a, 724b: Light-transmitting structure 121a, 123a, 124a, 125a, 424a: First sidewall 124b, 424b: Second sidewall 126: Translucent layer 127: Pixel Separation Layer 128: Wavelength conversion layer 129: Bonding layer 130: Overlay 521: Frame-shaped light-transmitting structure 624r: Strip-shaped block AA: line segment C1: Line layer D1: Direction E1, E2: Electrodes h1: Height L1: Light p1, p2, p3: Spacing w1: width α: included angle

Claims

1. A display, comprising: A substrate having a plane; A plurality of sub-pixels are disposed on the substrate, and each of the sub-pixels includes: a light-emitting element disposed on the plane of the substrate and electrically connected to the substrate; a light-transmitting structure disposed on the plane of the substrate and adjacent to the light-emitting element, wherein the light-transmitting structure includes: a first sidewall facing the light-emitting element, wherein the distance between the first sidewall and the plane of the substrate increases along a direction away from the light-emitting element, and the light-emitting element emits light toward the first sidewall of the light-transmitting structure; and two strip-shaped blocks located on opposite sides of the light-emitting element; and a light-transmitting layer disposed on the light-transmitting structure and covering the light-emitting element and the first sidewall of the light-transmitting structure.

2. The display as claimed in claim 1, wherein at least a portion of the light is totally reflected at the first sidewall.

3. The display as claimed in claim 1, wherein the light-transmitting structure extends along a periphery of the light-emitting element and surrounds the light-emitting element.

4. The display as described in claim 3, wherein each of the sub-pixels further comprises: At least one pair of strip-shaped light-transmitting structures are disposed on the plane of the substrate and are respectively located on opposite sides of the light-emitting element, wherein the light-emitting element and the light-transmitting structures are located between the strip-shaped light-transmitting structures.

5. The display as claimed in claim 4, wherein the strip-shaped light-transmitting structures and the spacing between the light-transmitting structures are in the range of 5µm to 50µm.

6. The display as claimed in claim 3, wherein each of the sub-pixels further comprises: At least one frame-shaped light-transmitting structure is disposed on the plane of the substrate, wherein the frame-shaped light-transmitting structure extends along the periphery of the light-emitting element and surrounds the light-emitting element and the light-transmitting structure.

7. The display as claimed in claim 1, wherein the light-transmitting structure has a height, and the distance between a top surface of the light-emitting element and the plane of the substrate is less than the height.

8. The display as claimed in claim 1, wherein each of the sub-pixels further comprises: At least one pair of strip-shaped light-transmitting structures are disposed on the plane of the substrate and are respectively located on opposite sides of the light-emitting element, wherein the light-emitting element and the light-transmitting structures are located between the strip-shaped light-transmitting structures.

9. The display as claimed in claim 8, wherein the strip-shaped light-transmitting structures and the spacing between the light-transmitting structures are such that the spacing ranges from 5µm to 50µm.

10. The display as claimed in claim 1, wherein the light-transmitting structure further comprises: A second sidewall is adjacent to the first sidewall and faces away from the light-emitting element, wherein the distance between the second sidewall and the plane of the substrate decreases along the direction away from the light-emitting element.

11. The display as claimed in claim 1, wherein the light-transmitting structure further comprises: A second sidewall facing away from the light-emitting element, wherein the distance between the second sidewall and the plane of the substrate decreases along the direction away from the light-emitting element; and a top surface disposed opposite to the plane of the substrate and adjacent to the first sidewall and the second sidewall respectively.

12. The display as claimed in claim 1, wherein the refractive index of the light-transmitting layer is greater than the refractive index of the light-transmitting structure.

13. The display as described in claim 1, further comprising: A pixel separation layer is disposed on the plane of the substrate and distributed between adjacent sub-pixels.

14. The display as claimed in claim 1, wherein the sub-pixel further comprises: A wavelength conversion layer is disposed on the light-emitting element; And a bonding layer disposed on the wavelength conversion layer, wherein the wavelength conversion layer is located between the bonding layer and the light-transmitting layer.

15. The display as claimed in claim 14, wherein the refractive index of the light-transmitting structure is n1, the refractive index of the light-transmitting layer is n2, and the refractive index of the wavelength conversion layer is n3, wherein there is an included angle between the first sidewall and the plane of the substrate, and the included angle is acute, wherein the angle of the included angle is α1, and satisfies: 90° - sin⁻¹(n⁻¹(n⁻¹ / n⁻²) < α1 < sin⁻¹(n⁻¹ / n⁻²) + sin⁻¹(n⁻¹ / n⁻²).

16. The display as described in claim 15, wherein the included angle is greater than 20° and less than 70°.

17. The display as claimed in claim 1, wherein the light-transmitting structure has a width that falls between 5µm and 50µm.

18. A display comprising: A substrate having a plane; A plurality of sub-pixels are disposed on the substrate, and each of the sub-pixels includes: a light-emitting element disposed on the plane of the substrate and electrically connected to the substrate; a light-transmitting structure disposed on the plane of the substrate and adjacent to the light-emitting element, wherein the light-transmitting structure includes: a first sidewall facing the light-emitting element, wherein the distance between the first sidewall and the plane of the substrate increases along a direction away from the light-emitting element, and the light-emitting element emits light toward the first sidewall of the light-transmitting structure; two strip-shaped blocks, respectively located on opposite sides of the light-emitting element; a light-transmitting layer disposed on the light-transmitting structure and covering the light-emitting element and the first sidewall of the light-transmitting structure; and at least one pair of strip-shaped light-transmitting structures disposed on the plane of the substrate and respectively located on opposite sides of the light-emitting element, wherein the light-emitting element and the light-transmitting structure are located between the strip-shaped light-transmitting structures; wherein the light-transmitting structure has a height, and the distance between a top surface of the light-emitting element and the plane of the substrate is less than the height.

19. The display as claimed in claim 18, wherein the light-transmitting structure extends along a periphery of the light-emitting element and surrounds the light-emitting element.

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