Display panel and method for manufacturing the same

Abstract

A display panel and a manufacturing method thereof. The display panel includes a first substrate, a second substrate, at least one light-emitting diode, a white insulating layer, and at least one first spacer layer. The first substrate includes a color filter layer and a light-shielding layer. The second substrate is disposed opposite to the first substrate, and the light-emitting diode is disposed on the second substrate. The white insulating layer is located on the second substrate and protrudes towards the first substrate, and the white insulating layer overlaps with the color filter layer and the light-shielding layer in a direction perpendicular to the first substrate. The first spacer layer is located between the second substrate and the white insulating layer, and the first spacer layer overlaps with the light-shielding layer in this direction.

Description

[0001] This application is a divisional application of a patent application for an invention titled "Display Panel and Manufacturing Method Thereof", with the applicant being AU Optronics Corporation, the application date being January 7, 2020, and the application number being 202010013812.5. Technical Field

[0002] The present disclosure relates to a display panel and a manufacturing method of the display panel. Background Art

[0003] In current micro light-emitting diode array display panels, a relatively thick black light-shielding layer or multiple black light-shielding layers are required to reduce the color mixing problem of color light converted by a color conversion layer between different sub-pixels. However, the light absorption characteristics of the black light-shielding layer result in poor light conversion efficiency of the display panel. In addition, it is difficult to reduce the stacking width of the multi-layer light-shielding structure between sub-pixels, which is not conducive to process miniaturization and makes it difficult to improve the resolution of the display panel. Summary of the Invention

[0004] One technical embodiment of the present disclosure is a display panel.

[0005] In one embodiment of the present disclosure, the display panel includes a first substrate, a second substrate, at least one light-emitting diode, a reflective layer, and at least one first spacer layer. The first substrate includes a color filter layer. The second substrate is disposed opposite to the first substrate. The light-emitting diode is disposed on the second substrate. The reflective layer is located on the first substrate and protrudes toward the second substrate. The first spacer layer is located between the first substrate and the second substrate and has a first end and a second end, wherein the first end of the first spacer layer is between the surface of the reflective layer close to the second substrate and the second substrate.

[0006] In one embodiment of the present disclosure, the edge of the first end of the first spacer layer and the edge of the reflective layer adjacent to the first end are substantially flush in a direction perpendicular to the first substrate.

[0007] In one embodiment of the present disclosure, the edge of the second end of the first spacer layer and the edge of the reflective layer adjacent to the second end are substantially flush in a direction perpendicular to the first substrate.

[0008] In one embodiment of the present disclosure, the material of the reflective layer is metal, and the reflective layer has a first section, a second section, and a third section connecting the first section and the second section. The second section is between the first spacer layer and the first substrate, the third section contacts the sidewall of the first spacer layer, and the first end of the first spacer layer covers the first section.

[0009] In one embodiment of the present disclosure, the display panel further includes a second spacer layer, which is located on the first substrate and protrudes toward the second substrate. The third section of the reflective layer contacts the sidewall of the second spacer layer, and the first section of the reflective layer is between the first spacer layer and the second spacer layer.

[0010] In an embodiment of the present disclosure, the first substrate further includes a protective film covering the light filtering layer, wherein the material of the protective film is a transparent conductive layer.

[0011] In an embodiment of the present disclosure, the first substrate further includes a light-shielding layer, wherein the projection of the reflective layer on the first substrate is within the projection of the light-shielding layer on the first substrate.

[0012] In an embodiment of the present disclosure, the display panel further includes a color conversion layer located between the light filtering layer and the light-emitting diode.

[0013] In an embodiment of the present disclosure, the material of the reflective layer is metal, and the display panel further includes a protective layer located between the color conversion layer and the reflective layer.

[0014] In an embodiment of the present disclosure, the reflective layer has two first segments, a second segment, and two third segments respectively connecting the second segment and the two first segments. The second segment is located between the first spacer layer and the first substrate, the two first segments are located between the first spacer layer and the color conversion layer, and the two third segments respectively contact opposite sidewalls of the first spacer layer.

[0015] In an embodiment of the present disclosure, the light-emitting diode has the same color as the light filtering layer.

[0016] In an embodiment of the present disclosure, the color conversion layer further has a cavity located between the light-emitting diode and the light filtering layer.

[0017] In an embodiment of the present disclosure, the display panel further includes a plurality of color regions. When viewed from the direction of the arrangement of the color regions, there are a plurality of first spacer layers and a plurality of reflective layers, and two adjacent first spacer layers are located between two adjacent reflective layers.

[0018] In an embodiment of the present disclosure, the display panel further includes a color conversion layer located between two first spacer layers.

[0019] In an embodiment of the present disclosure, the first spacer layer is composed of an absorptive photoresist material.

[0020] In an embodiment of the present disclosure, the reflective layer is composed of a reflective photoresist material.

[0021] In an embodiment of the present disclosure, the display panel includes a plurality of light-emitting diodes respectively corresponding to a first color region, a second color region, and a third color region. The first color region further includes a color conversion layer located between the first substrate and the second substrate. The color conversion layer and the light filtering layer overlap in a direction substantially perpendicular to the first substrate.

[0022] In an embodiment of the present disclosure, the second color region and the third color region further include a second spacer layer disposed between the first substrate and the light-emitting diode.

[0023] In an embodiment of the present disclosure, the light-emitting diodes corresponding to the second color region and the third color region emit blue light and green light respectively, and the light-filtering layer of the first color region is red.

[0024] Another technical embodiment of the present disclosure is a display panel.

[0025] In an embodiment of the present disclosure, the display panel includes a first substrate, a second substrate, a light-emitting diode, a white insulating layer, and a first spacer layer. The first substrate includes a light-filtering layer and a light-shielding layer. The second substrate is disposed opposite to the first substrate. The light-emitting diode is disposed on the second substrate. The white insulating layer is located on the second substrate and protrudes toward the first substrate, wherein the white insulating layer overlaps with the light-filtering layer and the light-shielding layer in a direction perpendicular to the first substrate. The first spacer layer is disposed between the second substrate and the white insulating layer, wherein the first spacer layer overlaps with the light-shielding layer in a direction perpendicular to the first substrate.

[0026] In an embodiment of the present disclosure, the white insulating layer is composed of a reflective photoresist material, and the first spacer layer is composed of an absorptive photoresist material.

[0027] Another technical embodiment of the present disclosure is a method for manufacturing a display panel.

[0028] In an embodiment of the present disclosure, the method for manufacturing a display panel includes providing a first substrate; forming a reflective layer material on the first substrate; forming a first spacer layer material on the reflective layer; patterning the first spacer layer material to form a first spacer layer; using the first spacer layer as a mask to pattern the reflective layer material to form a reflective layer, such that a first end of the first spacer layer covers a surface of the reflective layer material away from the first substrate; and forming a light-emitting diode on the second substrate, such that the light-emitting diode is located between the first substrate and the second substrate.

[0029] In an embodiment of the present disclosure, the method for manufacturing a display panel further includes forming a second spacer layer on the first substrate before forming the reflective layer, such that the second spacer layer overlaps with the light-shielding layer in a direction substantially perpendicular to the first substrate.

[0030] In an embodiment of the present disclosure, the method for manufacturing a display panel further includes forming a color conversion layer on the first substrate after patterning the reflective layer.

[0031] In an embodiment of the present disclosure, the method for manufacturing a display panel further includes: forming a color conversion layer on the first substrate before forming the reflective layer, exposing a part of the first substrate from the color conversion layer, and overlapping a part of the reflective layer close to the first substrate with the light-shielding layer in a direction perpendicular to the first substrate.

[0032] According to the above embodiments of the present disclosure, by disposing a single-layer reflective layer between the first spacer layer and the second spacer layer, or by disposing the reflective layer adjacent to the first spacer layer, or by non-repetitively stacking the white insulating layer and the first spacer layer in the sub-pixel arrangement direction, the width of the light-shielding structure formed by the above structure in the sub-pixel arrangement direction can be reduced. Therefore, the interval distance between sub-pixels is reduced, so that the number of pixels can be increased and the resolution of the display panel can be improved. Description of the Drawings

[0033] Figure 1 FIG. is a cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0034] Figure 2 is Figure 1 a flowchart of a manufacturing method of the display panel.

[0035] Figures 3A to 3H is Figure 1 the display panel of Figure 2 at different stages of the manufacturing method.

[0036] Figures 4 to 8 FIG. is a cross-sectional view of a display panel according to some embodiments of the present disclosure.

[0037] Figure 9 FIG. is a cross-sectional view of a display panel according to another embodiment of the present disclosure.

[0038] Figure 10 is Figure 9 a flowchart of a manufacturing method of the display panel.

[0039] Figures 11A to 11G is Figure 9 the display panel of Figure 10 at different stages of the manufacturing method

[0040] Figures 12 to 16 FIG. is a cross-sectional view of a display panel according to some embodiments of the present disclosure.

[0041] Figures 17 to 18 FIG. is a cross-sectional view of a display panel according to some embodiments of the present disclosure.

[0042] Description of Reference Numerals:

[0043] 100, 100a, 100b, 100c, 100d, 100e, 200, 200a, 200b, 200c, 200d, 200e, 300, 300a: Display panel

[0044] 102: Cavity

[0045] 110: First substrate

[0046] 112, 112B, 112G, 112R: Filter layer

[0047] 114: Light-shielding layer

[0048] 120: Second substrate

[0049] 122, 122B, 122G: Light-emitting diodes

[0050] 130, 130’, 230, 330, 430: Reflective layer

[0051] 130M, 330M: Reflective layer material

[0052] 130A, 130A’, 330A: First segment

[0053] 130B, 130B’, 330B: Second segment

[0054] 130C, 130C’, 330C: Third segment

[0055] 132A, 152, 332A: Surface

[0056] 134A, 134B, 144A, 144B: Edge

[0057] 140, 240, 340, 440, 540: First spacer layer

[0058] 140M, 340M: First spacer layer material

[0059] 140A, 340A: First end

[0060] 140B, 340B: Second end

[0061] 146, 154, 156, 346: Sidewall

[0062] 150, 150’, 250: Second spacer layer

[0063] 160, 260: Color conversion layer

[0064] 170: Protective film

[0065] 262: Opening

[0066] 270: Protective layer

[0067] 530: White insulating layer

[0068] D1: First direction

[0069] D2: Second direction

[0070] D3: Third direction

[0071] θ: Tilt angle

[0072] C1: First color region

[0073] C2: Second color region

[0074] C3: Third color region

[0075] W1, W2, W3: Widths Detailed implementation manners

[0076] Multiple embodiments will be disclosed below with reference to the accompanying drawings. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present disclosure. That is to say, in some embodiments of the present disclosure, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some conventional structures and elements will be shown in a simple schematic manner in the drawings. And, unless otherwise indicated, the same reference numerals in different drawings can be regarded as corresponding components. The drawings are shown to clearly express the connection relationships between the elements in these embodiments, rather than showing the actual sizes of the elements.

[0077] Figure 1 FIG. is a cross-sectional view of a display panel 100 according to some embodiments of the present disclosure. The display panel 100 includes a first substrate 110, a second substrate 120, a reflective layer 130, a first spacer layer 140, and a light-emitting diode 122. The second substrate 120 and the first substrate 110 are disposed opposite to each other and arranged in a first direction D1. The first direction D1 is perpendicular to the first substrate 110 and the second substrate 120 here. The first substrate 110 includes a filter layer 112. The light-emitting diode 122 is disposed on the second substrate 120, and the filter layer 112 and the light-emitting diode 122 overlap in the first direction D1. The reflective layer 130 is located on the first substrate 110 and protrudes towards the second substrate 120. The first spacer layer 140 is located between the first substrate 110 and the second substrate 120 and has a first end 140A and a second end 140B.

[0078] In this embodiment, the first spacer layer 140 is a transparent insulating material. The first end 140A represents the section of the first spacer layer 140 close to the second substrate 120, and the second end 140B represents the section of the first spacer layer 140 close to the first substrate 110. The first end 140A of the first spacer layer 140 is located between the surface 132A of the reflective layer 130 close to the second substrate 120 and the second substrate 120. In other words, the second substrate 120, the first end 140A of the first spacer layer 140, and the reflective layer 130 are stacked in sequence in the first direction D1, and the first spacer layer 140 separates the reflective layer 130 from the second substrate 120.

[0079] In this embodiment, the material of the reflective layer 130 is metal, and the reflective layer 130 has a first segment 130A, a second segment 130B, and a third segment 130C connecting the first segment 130A and the second segment 130B. The second segment 130B is located between the first spacer layer 140 and the first substrate 110. The third segment 130C contacts the sidewall 146 of the first spacer layer 140. The first end 140A of the first spacer layer 140 covers the first segment 130A. In addition, the first segment 130A and the second segment 130B extend in opposite directions from opposite ends of the third segment 130C, respectively. Specifically, in this embodiment, the first segment 130A and the second segment 130B extend along a second direction D2 and a third direction D3 perpendicular to the first direction D1, respectively, but this is not intended to limit the present disclosure. The second direction D2 and the third direction D3 represent the directions of sub-pixel arrangement. In some embodiments, the first segment 130A and the second segment 130B may extend along the third direction D3 and the second direction D2, respectively.

[0080] In this embodiment, the edge 144A of the first end 140A of the first spacer layer 140 and the edge 134A of the reflective layer 130 adjacent to the first end 140A are substantially flush in the first direction D1 perpendicular to the first substrate 110. The edge 144B of the second end 140B of the first spacer layer 140 and the edge 134B of the reflective layer 130 adjacent to the second end 140B are substantially flush in the first direction D1. In other words, the edge 144A of the first end 140A of the first spacer layer 140 and the edge 134A of the first segment 130A of the reflective layer 130 are substantially flush in the first direction D1 and form a common inclined plane, and the edge 144B of the second end 140B of the first spacer layer 140 and the edge 134B of the second segment 130B of the reflective layer 130 are substantially flush in the first direction D1 and form a common inclined plane.

[0081] In this embodiment, the display panel 100 further includes a second spacer layer 150, which is located on the first substrate 110 and protrudes toward the second substrate 120. The second spacer layer 150 and the first spacer layer 140 are made of the same transparent insulating material. The third section 130C of the reflective layer 130 contacts the sidewall 156 of the second spacer layer 150, and the first section 130A of the reflective layer 130 is located between the first spacer layer 140 and the second spacer layer 150. In other words, the second substrate 120, the first end 140A of the first spacer layer 140, the first section 130A of the reflective layer 130, and the second spacer layer 150 are stacked in sequence in the first direction D1. In this embodiment, the upper surface 152 of the second spacer layer 150 close to the second substrate 120 contacts the first section 130A of the reflective layer 130. The position where the first end 140A of the first spacer layer 140 is flush with the first section 130A of the reflective layer 130 can be located at any position on the upper surface 152 of the second spacer layer 150. That is to say, the first end 140A of the first spacer layer 140 and the first section 130A of the reflective layer 130 may completely cover the upper surface 152 of the second spacer layer 150, or partially cover the upper surface 152 of the second spacer layer 150, or may not cover the upper surface 152 of the second spacer layer 150 but only cover the sidewall 156 of the second spacer layer 150. Specifically, the first section 130A of the reflective layer 130 does not cover the other sidewall 154 of the second spacer layer 150 away from the first spacer layer 140, that is, the first spacer layer 140, the reflective layer 130, and the second spacer layer 150 do not overlap and stack in the second direction D2 (or the third direction D3).

[0082] In some embodiments, the light-shielding structure formed by the reflective layer 130, the first spacer layer 140, and the second spacer layer 150 has an inclination angle θ with the first substrate 110, which is between approximately 60 degrees and approximately 90 degrees, but it is not intended to limit the present disclosure. Specifically, as Figure 1 shown, the inclined surface formed by the edge 144B of the second end 140B of the first spacer layer 140 being flush with the edge 134B of the second section 130B of the reflective layer 130 has an inclination angle θ with the first substrate 110. Similarly, there is also an inclination angle θ between the other sidewall 154 of the second spacer layer 150 away from the first spacer layer 140 and the first substrate 110. In a preferred embodiment, the inclination angle θ is between approximately 70 degrees and approximately 80 degrees, which can make the third section 130C of the reflective layer 130 more completely cover the sidewall 156 of the second spacer layer 150 and make the light-shielding structure have a better reflection effect.

[0083] It should be understood that Figure 1The reflective layer 130, the first spacer layer 140, and the second spacer layer 150 in [it] should be a continuous pattern surrounding a plurality of sub-pixels in the first direction D1. However, for clarity of illustration, in the second direction D2 (third direction D3) of the sub-pixel arrangement, the first spacer layer 140, the second spacer layer 150, and the reflective layer 130 at the portions on both sides of any sub-pixel are regarded as two independent units.

[0084] The display panel 100 further includes a color conversion layer 160. The color conversion layer 160 is located between the first substrate 110 and the second substrate 120, that is, between the filter layer 112 and the light-emitting diode 122. Specifically, the portion of the color conversion layer 160 within each sub-pixel is jointly surrounded by the reflective layer 130, the first spacer layer 140, and the second spacer layer 150. In other words, the edges 144A, 144B of the first spacer layer 140, the edges 134A, 134B of the reflective layer 130, and the sidewall 154 of the second spacer layer 150 away from the first spacer layer 140 are in contact with the color conversion layer 160. In addition, the upper surface 152 of the portion of the second spacer layer 150 not covered by the reflective layer 130 is also in contact with the color conversion layer 160. The color conversion layer 160 contains phosphor or fluorescent dye for converting a part of the color light from the light-emitting diode 122 into color light of another wavelength band.

[0085] As Figure 1 shown, the display panel 100 has a first color region C1, a second color region C2, and a third color region C3, respectively representing the light-emitting regions of each sub-pixel. For example, taking the second color region C2 as an example, a part of the light from the light-emitting diode 122 can travel straight through the filter layer 112 of the second color region C2, and another part of the light is converted into another color light by the color conversion layer 160 and travels in various directions. Among them, a part of the converted another color light penetrates the second spacer layer 150 and is reflected by the reflective layer 130 towards the first substrate 110. Therefore, the color light from the light-emitting diode 122 is mixed with the converted another color light traveling towards the first substrate 110, and the wavelength band of the color light passing through the filter layer 112 and the first substrate 110 in the second color region C2 is the color light corresponding to each sub-pixel. In this embodiment, the light-emitting diode 122 can be blue or green, and the filter layer 112 can be blue, green, or red. Figure 1 In the second direction D2 or the third direction D3 of the viewing angle in [it] is the direction of the color region (or sub-pixel) arrangement. That is to say, viewed from the direction of the color region arrangement, the first spacer layer 140, the second spacer layer 150, and the reflective layer 130 on both sides of each color region are described as two independent units.

[0086] According to the above, by disposing the single-layer reflective layer 130 between the first spacer layer 140 and the second spacer layer 150, the width of the light-shielding structure formed by the reflective layer 130, the first spacer layer 140, and the second spacer layer 150 in the second direction D2 (or the third direction D3) is reduced. In this way, the interval distance between adjacent pixels can be reduced, so that the number of pixels can be increased to improve the resolution of the display panel 100.

[0087] In addition, since the colored light of the light-emitting diode 122 travels in various directions after being converted by the color conversion layer 160, part of the light traveling toward the reflective layer 130 can pass through the first color region C1, the second color region C2, and the third color region C3 of the first substrate 110 after being reflected. Therefore, the display panel 100 can improve the light extraction efficiency by disposing the reflective layer 130.

[0088] The first substrate 110 further includes a light-shielding layer 114 and a protective film 170. The light-shielding layer 114 is located between the filter layers 112 of two adjacent color regions. The protective film 170 covers the filter layer 112 and the light-shielding layer 114. The protective film 170 can be an insulating layer or a transparent conductive layer (for example: indium tin oxide, ITO). The protective film 170 is used to protect the filter layer 112 and the light-shielding layer 114 of the first substrate 110 during the processes of forming the first spacer layer 140, the second spacer layer 150, and the reflective layer 130. Similarly, the light-shielding layer 114 is a continuous pattern surrounding a plurality of sub-pixels in the first direction D1. In addition, when the protective film 170 is a transparent conductive layer, in addition to protecting the filter layer 112 and the light-shielding layer 114, it also has the effect of shielding electromagnetic wave interference to improve the display quality of the display panel 100.

[0089] In this embodiment, the projection of the reflective layer 130 on the first substrate 110 is within the projection of the light-shielding layer 114 on the first substrate 110. That is to say, the projection of the reflective layer 130 on the first substrate 110 is less than or equal to the projection of the light-shielding layer 114 on the first substrate 110. In this way, it is possible to avoid the leakage of the colored light from the light-emitting diode 122 and another colored light that has been converted and travels toward the first substrate 110 after being mixed between two color regions. Further, since the second segment 130B of the reflective layer 130 is adjacent to the first substrate 110, the light-shielding layer 114 should at least be able to block the second segment 130B of the reflective layer 130. In other words, the projection of the light-shielding layer 114 on the first substrate 110 covers the projection of the second segment 130B of the reflective layer 130 on the first substrate 110. As Figure 1 shown, the second segment 130B of the reflective layer 130 has a width W1 in the second direction D2, the light-shielding layer 114 has a width W2 in the second direction D2, and the width W1 is less than or equal to the width W2. In this way, it is possible to avoid the leakage of another colored light reflected by the second segment 130B of the reflective layer 130 between two color regions.

[0090] Figure 2 is Figure 1 a flowchart of a manufacturing method of the display panel 100. Figures 3A to 3H is Figure 2 a cross-sectional view of the display panel 100 at different stages of the manufacturing method. Please also refer to Figure 2 and Figure 3A , in step S11, a first substrate 110 is provided. The first substrate 110 includes a filter layer 112, a light-shielding layer 114, and a protective film 170. The protective film 170 covers the light-shielding layer 114 and the filter layer 112 to protect the filter layer 112 and the light-shielding layer 114 in subsequent processes.

[0091] Also refer to Figure 2 and Figure 3B , in step S12, a second spacer layer 150 is formed on the first substrate 110. In this embodiment, a second spacer layer material covering the first substrate 110 is first formed, and then the second spacer layer material is patterned by a photolithography etching process to form the second spacer layer 150, so that the second spacer layer 150 overlaps with the light-shielding layer 114 in a first direction D1 substantially perpendicular to the first substrate 110. In some embodiments, the second spacer layer 150 is formed by a printing process. Specifically, the second spacer layer 150 and the light-shielding layer 114 partially overlap in the first direction D1, and the centers of the second spacer layer 150 and the light-shielding layer 114 are not aligned in a second direction D2. For example, in this embodiment, the sidewall 156 of the second spacer layer 150 is substantially close to the center of the light-shielding layer 114, and the second spacer layer 150 overlaps with the left half of the light-shielding layer 114 in the first direction D1, but the present disclosure is not limited thereto.

[0092] Also refer to Figure 2 and Figure 3C , in step S13, a reflective layer material 130M is formed on the first substrate 110. In this embodiment, the reflective layer material 130M is a metal. The reflective layer material 130M is blanket-coated on the second spacer layer 150 and the first substrate 110.

[0093] Also refer to Figure 2 and Figure 3D , then in step S14, a first spacer layer material 140M is formed on the reflective layer material 130M.

[0094] Also refer to Figure 2 , Figure 3D and Figure 3E , in step S15, the first spacer layer material 140M is patterned to form the first spacer layer 140. As Figure 3EAs shown, a part of the reflective layer material 130M is covered by the first spacer layer 140, and another part of the reflective layer material 130M is exposed from the first spacer layer 140. Specifically, the projection of the reflective layer material 130M covered by the first spacer layer 140 on the first substrate 110 falls within the projection of the light-shielding layer 114 on the first substrate 110. In other words, the projection of the first spacer layer 140 on the first substrate 110 falls within the projection of the light-shielding layer 114 on the first substrate 110.

[0095] Referring also to Figure 2 , Figure 3E and Figure 3F , in step S16, using the first spacer layer 140 as a mask, the reflective layer material 130M is patterned to form the reflective layer 130. As Figure 3F shown, the portion of the reflective layer material 130M that is not covered by the first spacer layer 140 is removed, such that the first end 140A of the first spacer layer 140 covers the surface 132A of the reflective layer 130 away from the first substrate 110, and the second segment 130B of the reflective layer 130 overlaps with the right half of the light-shielding layer 114 in the first direction D1. It can be seen therefrom that the positions of the second segment 130B and the third segment 130C of the reflective layer 130 are determined by the second spacer layer 150, while the extension lengths of the first segment 130A and the second segment 130B of the reflective layer 130 are determined by the first spacer layer 140. Through the above steps, the first spacer layer 140, the reflective layer 130, and the second spacer layer 150 are not repeatedly stacked in the second direction D2 (or the third direction D3), such that the width of the light-shielding structure formed by the first spacer layer 140, the reflective layer 130, and the second spacer layer 150 in the second direction D2 is reduced.

[0096] Referring also to Figure 2 and Figure 3G , in step S17, after forming the reflective layer 130, a color conversion layer 160 is formed on the first substrate 110. The color conversion layer 160 can be formed by injection or spraying followed by grinding, so as to fill the first color region C1, the second color region C2, and the third color region C3.

[0097] Referring also to Figure 1 and Figure 3H , in step S18, a second substrate 120 is provided, and a light-emitting diode 122 is formed on the second substrate 120, such that the light-emitting diode 122 is located between the first substrate 110 and the second substrate 120. In this way, the display panel 100 as shown in Figure 1 can be obtained.

[0098] Figure 4 is a cross-sectional view of a display panel 100a according to some embodiments of the present disclosure. The display panel 100a is the same as Figure 1is substantially the same as the display panel 100, the difference being that the first section 130A' of the reflective layer 130' extends in the third direction D3, and the second section 130B' of the reflective layer 130' extends in the second direction D2. In other words, taking the second color region C2 as an example, the two side reflective layers 130, 130', the first spacer layer 140, and the second spacer layers 150, 150' are mirror-symmetrical with respect to the second color region C2.

[0099] In addition, since the projection of the light-shielding layer 114 on the first substrate 110 needs to cover the projection of the second section 130B' of the reflective layer 130' on the first substrate 110. Therefore, in this embodiment, the second spacer layer 150' overlaps with the right half of the light-shielding layer 114 in the first direction D1, and the second section 130B' of the reflective layer 130' overlaps with the left half of the light-shielding layer 114 in the first direction D1. The display panel 100a and Figure 1 the display panel 100 have similar technical effects, which will not be elaborated here.

[0100] Figure 5 is a cross-sectional view of a display panel 100b according to some embodiments of the present disclosure. The display panel 100b and Figure 4 the display panel 100a are substantially the same, the difference being that the first spacer layer 240 is composed of a light-absorbing photoresist material, and the color filter layer 112B and the light-emitting diode 122B in the second color region C2 are of the same color. The light-absorbing photoresist material can be an organic material or an inorganic material, which does not limit the present disclosure.

[0101] In this embodiment, the color filter layer 112B in the second color region C2 is blue and the light-emitting diode 122B is blue light. Since the blue light emitted by the light-emitting diode 122B has high linearity, most of the blue light will travel straight and pass through the color filter layer 112B, while part of the blue light is converted into another color light by the color conversion layer 160 and travels in all directions. Therefore, a part of the another color light traveling towards the first spacer layer 240 is absorbed by the first spacer layer 240 and will not be reflected by the reflective layer 130. In addition, the remaining another color light traveling towards the color filter layer 112B is filtered, so that the light emitted from the second color region C2 is the un-converted blue light. That is to say, since the color filter layer 112 (i.e., the color of the second color region C2) and the light-emitting diode 122 are of the same color, the second color region C2 does not substantially need to perform color conversion. Therefore, in this configuration, absorbing the converted another color light can make the light passing through the second color region C2 closer to pure blue light. In some embodiments, not providing the color conversion layer 160 and the color filter layer 112 can also make the light emitted from the second color region C2 be the pure blue light from the light-emitting diode 122B.

[0102] According to the above, when the color conversion layer 160 is located between the color filter layer 112B and the light-emitting diode 122B in the second color region C2, by setting the first spacer layer 240 composed of an absorptive photoresist material to face the second color region C2, the other color light traveling toward the first spacer layer 240 on both sides of the second color region C2 can be absorbed and not reflected to the color filter layer 112B. Therefore, the light passing through the color filter layer 112B in the second color region C2 can be almost pure blue light directly emitted from the light-emitting diode 122B. In addition, since blue light has high directivity, even if the amount of light passing through the first substrate 110 is reduced due to partial absorption of the color-converted other color light, the blue light that directly passes through the second color region C2 without color conversion can still provide sufficient luminous efficiency. In some other embodiments, the color filter layer 112 and the light-emitting diode 122 in the second color region C2 can also be the same color, i.e., green. In other words, the first spacer layer 240 composed of an absorptive photoresist material is set to face the color region with the color filter layer 112 and the light-emitting diode 122 of the same color, that is, the color region that does not require color conversion.

[0103] In this embodiment, the color filter layers 112 and the light-emitting diodes 122 in the first color region C1 and the third color region C3 are different color lights. For example, the color filter layer 112 can be red or green, and the light-emitting diode 122 is blue or green. As Figure 1 described in the embodiment of, a part of the color-converted other color light passes through the first spacer layer 140 and is reflected toward the color filter layers 112 in the first color region C1 and the third color region C3 through the reflective layer 130 to increase the light extraction efficiency of the first color region C1 and the third color region C3.

[0104] Figure 6 is a cross-sectional view of a display panel 100c according to some embodiments of the present disclosure. The difference between the display panel 100c and Figure 5 the display panel 100b of is that the display panel 100c has a reflective layer 230 composed of a reflective photoresist material and does not have the reflective layer 130 and the second spacer layer 150 as in Figure 5 . The reflective photoresist material can be an organic material or an inorganic material, which is not intended to limit the present disclosure. In this embodiment, the projection of the light-shielding layer 114 on the first substrate 110 covers the projection of the reflective layer 230 on the first substrate 110, and the reflective layer 230 has the same technical effect as the reflective layer 130 in Figure 5 . In addition, as Figure 5As described in [reference], the color filter layer 112B and the light-emitting diode 122B in the second color region C2 are of the same color, while the color filter layers 112 and the light-emitting diodes 122 in the first color region C1 and the third color region C3 are of different colors. Therefore, the first spacer layer 240 composed of an absorptive photoresist material faces the second color region C2, and the reflective layer 230 faces the first color region C1 and the third color region C3. In other words, the reflective layer 230 can serve as Figure 5 the combination of the reflective layer 130 and the second spacer layer 150 in [reference]. Therefore, the display panel 100c also has a technical effect similar to that of the Figure 5 display panel 100b of [reference], which will not be elaborated here.

[0105] Figure 7 FIG. [figure number] is a cross-sectional view of a display panel 100d according to some embodiments of the present disclosure. The difference between the display panel 100d and the Figure 1 display panel 100 of [reference] is that the second spacer layer 250 overlaps with the color region that does not require color conversion in the first direction D1, and the second spacer layer 250 is located between the reflective layers 130. In this embodiment, the color filter layer 112B and the light-emitting diode 122B in the second color region C2 are both blue. The second spacer layer 250 overlaps with the color filter layer 112B of the second color region C2, two adjacent light-shielding layers 114, and the light-emitting diode 122B in the first direction D1. In the perspective of this embodiment, the first spacer layer 140 and the reflective layer 130 located on both sides of the second spacer layer 250 are mirror-symmetrical with respect to the second spacer layer 250. In other words, the reflective layers 130 on both sides are respectively located on opposite sides of the second spacer layer 250 and between the first spacer layers 140 on both sides. The first segments 130A of the reflective layers 130 on both sides extend towards each other, and the second segments 130B of the reflective layers 130 on both sides extend in opposite directions.

[0106] In this embodiment, as shown in Figure 7As shown, the color conversion layer 160 is formed between the second spacer layer 250 and the second substrate 120. In some other embodiments, a small amount of the color conversion layer 160 material may be formed between the second spacer layer 250 and the second substrate 120, which can be adjusted according to the actual formation method of the color conversion layer 160 (e.g., grinding after injection or spraying), but it is not intended to limit the present disclosure. That is to say, the blue light in the second color region C2 can penetrate the second spacer layer 250 and the filter layer 112B without passing through the color conversion layer 160. Alternatively, due to the high linearity of the blue light of the light-emitting diode 122B, even if the color conversion layer 160 is filled between the second spacer layer 250 and the second substrate 120, only a small amount of blue light is converted and then penetrates the second spacer layer 250 and the filter layer 112B. It can be seen from this that most of the light emitted from the second color region C2 is the blue light from the light-emitting diode 122B. Therefore, in some embodiments, the filter layer 112B in the second color region C2 can also be selectively omitted, which does not affect the blue light output efficiency of the second color region C2.

[0107] In some embodiments, the filter layer 112 and the light-emitting diode 122 that overlap with the second spacer layer 250 in the first direction D1 can also be the same color, i.e., green. In this embodiment, the filter layers 112 and the light-emitting diodes 122 in the first color region C1 and the third color region C3 are different colors of light. For example, the filter layer 112 can be red or green, and the light-emitting diode 122 is green or blue. As in Figure 1 the embodiment described, a part of the color-converted light of another color passes through the first spacer layer 140 and is then reflected by the reflective layer 130 towards the filter layers 112 in the first color region C1 and the third color region C3, so as to increase the light output efficiency of the first color region C1 and the third color region C3.

[0108] Figure 8 is a cross-sectional view of the display panel 100e according to some embodiments of the present disclosure. The display panel 100e is different from Figure 7 the display panel 100d in that the second spacer layer 250 extends and continuously covers two adjacent color regions. There is no first spacer layer 140, reflective layer 130, and light-shielding layer 114 between these two adjacent color regions. In this embodiment, the light-emitting diode 122B in the second color region C2 is blue, and the light-emitting diode 122G in the third color region C3 is green.

[0109] As in Figure 7 described, there may or may not be a color conversion layer 160 between the second spacer layer 250 and the second substrate 120. In Figure 8In the illustrated embodiment, the color conversion layer 160 is formed between the second spacer layer 250 and the second substrate 120. That is, the blue light in the second color region C2 can penetrate the second spacer layer 250 and the filter layer 112B without passing through the color conversion layer 160, and the green light in the third color region C3 can penetrate the second spacer layer 250 and the filter layer 112G without passing through the color conversion layer 160. Alternatively, since the blue light of the light-emitting diode 122B and the green light of the light-emitting diode 122G have high linearity, even if the color conversion layer 160 is filled between the second spacer layer 250 and the second substrate 120, only a small amount of blue light or green light passes through the second spacer layer 250 and the filter layers 112B and 112G after color conversion. Thus, it can be seen that most of the light emitted from the second color region C2 is the blue light from the light-emitting diode 122B, and most of the light emitted from the third color region C3 is the green light from the light-emitting diode 122G. Therefore, in some embodiments, the filter layer 112B in the second color region C2 and the filter layer 112G in the third color region C3 can also be selectively omitted, which does not affect the light extraction efficiency of the second color region C2 and the third color region C3.

[0110] In addition, since the blue light-emitting diode 122B and the green light-emitting diode 122G have high linearity, even if the light-shielding layer 114 is not provided between the second color region C2 and the third color region C3, it does not affect the light extraction effect of the second color region C2 and the third color region C3. In other words, the light passing through the second color region C2 can be regarded as pure blue light from the light-emitting diode 122B, and the light passing through the third color region C3 can be regarded as pure green light from the light-emitting diode 122G.

[0111] In this embodiment, the filter layer 112R in the first color region C1 is red, and the light-emitting diode 122 in the first color region C1 can be blue or green. As described above, a part of the converted light of the other color passes through the first spacer layer 140 and is reflected by the reflective layer 130 towards the filter layer 112R in the first color region C1 to increase the light extraction efficiency of the first color region C1.

[0112] Figure 9 A cross-sectional view of a display panel 200 according to another embodiment of the present disclosure. The display panel 200 includes a first substrate 110, a second substrate 120, a reflective layer 330, a first spacer layer 340, a color conversion layer 260, and a light-emitting diode 122. The first substrate 110 includes a filter layer 112, a light-shielding layer 114, and a protective film 170. The arrangements of the first substrate 110, the second substrate 120, the filter layer 112, the light-shielding layer 114, the protective film 170, and the light-emitting diode 122 are the same as those in Figure 1 the embodiment, and will not be described herein again.

[0113] In this embodiment, the reflective layer 330 is located on the first substrate 110 and protrudes towards the second substrate 120. The first spacer layer 340 is located between the first substrate 110 and the second substrate 120, and has a first end 340A and a second end 340B. The first end 340A of the first spacer layer 340 is located between the surface 332A of the reflective layer 330 close to the second substrate 120 and the second substrate 120. The first spacer layer 340 is a transparent insulating material.

[0114] In this embodiment, the material of the reflective layer 130 is metal, and the reflective layer 130 has two first segments 330A, two second segments 330B, and two third segments 330C respectively connecting the two first segments 330A and the second segments 330B. The second segment 330B is located between the first spacer layer 340 and the first substrate 110, the two first segments 330A are located between the first spacer layer 340 and the color conversion layer 260, and the two third segments 330C contact the opposite side walls 346 of the first spacer layer 340. In other words, the first spacer layer 340 separates the reflective layer 330 from the second substrate 120, and the first spacer layer 340 is covered by the reflective layer 330. In addition, the two first segments 330A extend in opposite directions towards the second direction D2 and the third direction D3 respectively. In some embodiments, the display panel 200 further includes a protective layer 270 located between the color conversion layer 260 and the reflective layer 330 for protecting the color conversion layer 260 during the etching process of forming the reflective layer 330. The protective layer 270 and the protective film 170 can be the same insulating layer or transparent conductive layer.

[0115] In this embodiment, since the color light of the light-emitting diode 122 travels in all directions after being converted by the color conversion layer 260, part of the light traveling towards the reflective layer 330 can pass through the first color region C1, the second color region C2, and the third color region C3 of the first substrate 110 after being reflected. Therefore, the display panel 200 can improve the light extraction efficiency through the reflective layer 330. However, different from Figure 1 the embodiment of, taking the second color region C2 as an example, another color light traveling in all directions after being converted by the color conversion layer 260 can be reflected by the two third segments 130C of the reflective layers 130 on both sides that are closer to the second color region C2 respectively. That is to say, the other color light of each color region is reflected by the third segments 130C of the reflective layers 130 on both sides.

[0116] In this embodiment, the projection of the reflective layer 330 on the first substrate 110 is within the projection of the light-shielding layer 114 on the first substrate 110. That is to say, the projection of the reflective layer 330 on the first substrate 110 is less than or equal to the projection of the light-shielding layer 114 on the first substrate 110. Further, since the second segment 330B of the reflective layer 330 is adjacent to the first substrate 110, the light-shielding layer 114 should at least be able to block the second segment 330B of the reflective layer 330. In other words, the projection of the light-shielding layer 114 on the first substrate 110 covers the projection of the second segment 330B of the reflective layer 330 on the first substrate 110. As Figure 9 shown, the second segment 330B of the reflective layer 330 has a width W3 in the second direction D2 parallel to the first substrate 110, the light-shielding layer 114 has a width W2 in the second direction D2 parallel to the first substrate 110, and the width W3 is less than the width W2. In this way, it is possible to avoid the leakage of the color light from the light-emitting diode 122 and the other color light that is converted and travels toward the first substrate 110 between the two color regions after mixing.

[0117] Figure 10 is Figure 9 a flowchart of a manufacturing method of the display panel 200. Figures 11A to 11E is Figure 9 a cross-sectional view of the display panel 200 at different stages of the Figure 10 manufacturing method. Referring to Figure 10 and Figure 11A simultaneously, in step S21, a first substrate 110 is provided. The first substrate 110 includes a filter layer 112, a light-shielding layer 114, and a protective film 170. The protective film 170 covers the light-shielding layer 114 and the filter layer 112 to protect the filter layer 112 and the light-shielding layer 114 in subsequent processes.

[0118] Referring to Figure 10 and Figure 11B simultaneously, in step S22, a color conversion layer material is covered on the first substrate 110, and the color conversion layer material is patterned to form a color conversion layer 260 on the first substrate 110, and a part of the first substrate 110 is exposed from the color conversion layer 260. Specifically, a part of the color conversion layer material overlapping with the light-shielding layer 114 in the first direction D1 is removed to form an opening 262, and the projection of the opening 262 on the first substrate 110 falls within the projection of the light-shielding layer 114 on the first substrate 110.

[0119] Referring to Figure 10 , Figure 11B and Figure 11C, in step S23, a reflective layer material 330M is formed on the first substrate 110 and the light-shielding layer 114, such that a portion of the reflective layer material 330M close to the first substrate 110 overlaps with the light-shielding layer 114 in a first direction D1 perpendicular to the first substrate 110. In some embodiments, as Figure 9 described, a protective layer 270 may be formed prior to forming the reflective layer 330. The protective layer 270 may be an insulating material or a transparent conductive layer (e.g., ITO) for protecting the light-filtering layer 112, the light-shielding layer 114, and the color conversion layer 260 of the first substrate 110 in subsequent steps.

[0120] Referring also to Figure 10 and Figure 11D , in step S24, a first spacer layer material 340M is formed on the reflective layer material 330M.

[0121] Referring also to Figure 10 and Figure 11E , in step S25, the first spacer layer material 340M is patterned to form a first spacer layer 340. As Figure 11E shown, a portion of the reflective layer material 330M surrounded by the color conversion layer 260 is covered by the first spacer layer 340, and most of the reflective layer material 330M located above the color conversion layer 260 is exposed from the first spacer layer 340. In this embodiment, since the first spacer layer 340 is formed after the patterning of the color conversion layer 260, the width of the first spacer layer 340 close to the second substrate 120 is greater than the width of the first spacer layer 340 close to the first substrate 110.

[0122] Referring also to Figure 10 , Figure 11E and Figure 11F , in step S26, using the first spacer layer 340 as a mask, the reflective layer material 330M is patterned to form a reflective layer 330. A portion of the reflective layer material 330M located above the color conversion layer 260 and not covered by the first spacer layer 340 is removed to form a first segment 330A of the reflective layer 330. A first end 340A of the first spacer layer 340 covers a surface 332A of the first segment 330A of the reflective layer 130. That is, the first end 340A of the first spacer layer 340 defines the length of the first segment 330A of the reflective layer 330. In addition, in step S22 (see Figure 11B ), an opening 262 formed by patterning the color conversion layer 260 defines the width of a second segment 330B of the reflective layer 330 in a second direction D2 and the distance between two third segments 330C of the reflective layer 330.

[0123] Referring also to Figure 10 and Figure 11G, in step S27, a second substrate 120 is provided, and a light-emitting diode 122 is formed on the second substrate 120, such that the light-emitting diode 122 is located between the first substrate 110 and the second substrate 120. In this way, the display panel 200 as shown in Figure 9 can be obtained. In this embodiment, by first patterning the color conversion layer 260, the first spacer layer 340 can be formed after defining the third section 330C of the reflective layer 330, such that the two third sections 330C of the reflective layer 330 surround the first spacer layer 340. Therefore, the width of the light-shielding structure formed by the reflective layer 330 and the first spacer layer 340 in the second direction D2 (or the third direction D3) can be reduced. In this way, the interval distance between adjacent pixels can be reduced, such that the number of pixels increases and the resolution of the display panel 200 is improved.

[0124] Figure 12 is a cross-sectional view of a display panel 200a according to some embodiments of the present disclosure. The difference between the display panel 200a and Figure 9 the display panel 200 is that the reflective layer 330 only has a first section 330A and a third section 330C. In this embodiment, the second color region C2 is a blue light sub-pixel, that is, the light-emitting diode 122B is blue light and color conversion is not required. In addition, since the first spacer layer 340 and the reflective layer 330 are formed after patterning the color conversion layer 260, a cavity 102 is formed after the first spacer layer 340 and the reflective layer 330 located in the second color region C2 are removed during patterning. That is to say, the second color region C2 does not have the color conversion layer 260, and the filter layer 112 can be selectively omitted without affecting the blue light emission efficiency of the second color region C2. In other words, the blue light emitted by the light-emitting diode 122B in the second color region C2 directly passes through the cavity 102 and passes through the first substrate 110. In some embodiments, the light-emitting diode 122 in the second color region C2 can also be green light. The cavity 102 between the first substrate 110 and the second substrate 120 in the second color region C2 can contain air, nitrogen, or be vacuum, which can be determined according to process conditions and is not intended to limit the present disclosure.

[0125] In this embodiment, the filter layer 112 and the light-emitting diode 122 in the first color region C1 and the third color region C3 are different color lights. For example, the filter layer 112 can be red or green, and the light-emitting diode 122 is blue or green. As described above, a part of the other color light after color conversion is reflected by the reflective layer 330 towards the filter layer 112 in the first color region C1 and the third color region C3 to increase the light emission efficiency of the first color region C1 and the third color region C3.

[0126] Figure 13 is a cross-sectional view of a display panel 200b according to some embodiments of the present disclosure. The difference between the display panel 200b and Figure 12The difference between the display panel 200a is that the first spacer layer 440 is composed of a light-absorbing photoresist material. The light-absorbing photoresist material can be an organic material or an inorganic material, which is not intended to limit the present disclosure. In this embodiment, the second color region C2 is a blue sub-pixel, that is, the light-emitting diode 122B is blue and no color conversion is required. As Figure 5 As described in the embodiment of, the first spacer layer 440 composed of the light-absorbing photoresist material faces the color region that does not require color conversion, and the reflective layer 330 faces the color region that requires color conversion. As Figure 12 As described in the embodiment of, the first spacer layer 440 and the reflective layer 330 of the second color region C2 can be removed during patterning to form a cavity 102 and do not have a color conversion layer 260. That is, the light-filtering layer 112 of the second color region C2 can be selectively omitted, so that the light emitted by the light-emitting diode 122 of the second color region C2 directly passes through the first substrate 110. In some embodiments, the light-emitting diode 122 of the second color region C2 can also be green. The configurations of the first color region C1 and the third color region C3 are the same as those of Figure 12 the display panel 200a, which will not be described in detail here.

[0127] Figure 14 is a cross-sectional view of a display panel 200c according to some embodiments of the present disclosure. The display panel 200c is different from Figure 13 the display panel 200b in that the reflective layer 430 is composed of a reflective photoresist material. The reflective photoresist material can be an organic material or an inorganic material, which is not intended to limit the present disclosure. The reflective layer 430 has the same technical effect as the reflective layer 430 composed of metal in Figure 13 , which will not be described in detail here. The color of the second color region C2 is the same as that of the light-emitting diode 122, while the light-filtering layers 112 and the light-emitting diodes 122 of the first color region C1 and the third color region C3 are of different colors. Therefore, the first spacer layer 440 faces the second color region C2, and the reflective layer 430 faces the first color region C1 and the third color region C3. In some embodiments, the light-emitting diode 122 of the second color region C2 can be green. The configurations of the first color region C1 and the third color region C3 are the same as those of Figure 13 the display panel 200b, which will not be described in detail here.

[0128] Figure 15 is a cross-sectional view of a display panel 200d according to some embodiments of the present disclosure. The display panel 200d is different from Figure 9The difference from the display panel 200 is that a part of the color conversion layer 260 in the second color region C2 is removed to form a cavity 102, and the light-emitting diodes 122 and the filter layer 112 in the second color region C2 are of the same color. The cavity 102 may contain air, nitrogen, or be a vacuum, which depends on the process conditions and is not intended to limit the present disclosure. In this embodiment, the second color region C2 is a blue sub-pixel, that is, the light-emitting diode 122B is blue and no color conversion is required. Therefore, since blue light has high directivity, most of the blue light can directly pass through the filter layer 112B without color conversion. And a part of the other color light converted by the color conversion layer 260 can still be filtered by passing through the filter layer 112B after being reflected by the reflection layer 330. In some embodiments, the second color region C2 may also be a green sub-pixel. The configurations of the first color region C1 and the third color region C3 are the same as those of Figure 12 the display panel 200a and will not be described herein again.

[0129] Figure 16 is a cross-sectional view of a display panel 200e according to some embodiments of the present disclosure. The difference between the display panel 200e and Figure 12 the display panel 200a is that there is no reflection layer 330, the first spacer layer 340, and the light-shielding layer 114 between the second color region C2 and the third color region C3. In this embodiment, the light-emitting diode 122B in the second color region C2 is blue, the light-emitting diode 122G in the third color region C3 is green, and the second color region C2 and the third color region C3 do not have a filter layer 112. That is, the blue light from the light-emitting diode 122B and the green light from the light-emitting diode 122G can directly pass through the second color region C2 and the third color region C3, respectively. In addition, since the blue light-emitting diode 122B and the green light-emitting diode 122G have high directivity, most of the blue light and green light can travel straight and pass through the first substrate 110. Therefore, even if no light-shielding layer 114 is provided between the second color region C2 and the third color region C3, it does not affect the individual light-emitting effects of the blue light and the green light. In other words, the light passing through the second color region C2 can be regarded as pure blue light from the light-emitting diode 122B, and the light passing through the third color region C3 can be regarded as pure green light from the light-emitting diode 122G.

[0130] In this embodiment, the filter layer 112R in the first color region C1 is red, and the light-emitting diode 122 in the first color region C1 can be blue or green. As described above, the light converted in the first color region C1 is reflected by the reflection layer 330 toward the filter layer 112R to increase the light-emitting efficiency. In some embodiments, the light-emitting diodes 122 in the second color region C2 and the third color region C3 are green and blue, respectively.

[0131] In the above embodiments, by disposing a single-layer reflective layer between the first spacer layer and the second spacer layer, or surrounding the first spacer layer with the reflective layer, the width of the light-shielding structure formed by the reflective layer and the first spacer layer (and the second spacer layer) in the second direction D2 can be reduced. In this way, the spacing distance between adjacent pixels can be reduced, so that the number of pixels can be increased to improve the resolution of the display panel.

[0132] Figure 17 FIG. 4 is a cross-sectional view of a display panel 300 according to some embodiments of the present disclosure. The display panel 300 includes a first substrate 110, a second substrate 120, a white insulating layer 530, a first spacer layer 540, and a light-emitting diode 122. The second substrate 120 and the first substrate 110 are disposed opposite to each other and arranged in a first direction D1. The first direction D1 is perpendicular to the first substrate 110 and the second substrate 120 here. The first substrate 110 includes a light-filtering layer 112 and a light-shielding layer 114. The light-emitting diode 122 is disposed on the second substrate 120, and the light-filtering layer 112 and the light-emitting diode 122 overlap in the first direction D1. The white insulating layer 530 is located on the first substrate 110 and protrudes toward the second substrate 120. The white insulating layer 530 overlaps with the light-filtering layer 112 and the light-shielding layer 114 in the first direction D1 perpendicular to the first substrate 110. The first spacer layer 540 is disposed between the second substrate 120 and the white insulating layer 530, and the first spacer layer 540 overlaps with the light-shielding layer 114 in the first direction D1. In this embodiment, the white insulating layer 530 is composed of a reflective photoresist material, and the first spacer layer 540 is composed of an absorptive photoresist material. Part of the light from the light-emitting diode 122 is reflected or scattered by the white insulating layer 530, and the other part of the light can penetrate through the white insulating layer 530.

[0133] In this embodiment, the light filtering layer 112B of the second color region C2 is blue, and the light emitting diode 122B is blue light. Since blue light has high linearity, most of the blue light can pass through the white insulating layer 530 and pass through the light filtering layer 112B, while a part of the blue light may travel towards the first color region C1 and the third color region C3. Since the white insulating layer 530 can reflect a part of the light and transmit another part of the light, as long as the range where the white insulating layer 530 extends from the second color region C2 to the first color region C1 and the third color region C3 is large enough, the light emitted by the light emitting diode 122 in the second color region C2 can be completely reflected before reaching the first color region C1 and the third color region C3. In addition, after the light emitted by the light emitting diode 122 in the second color region C2 is reflected or scattered by the white insulating layer 530, a part of the light traveling towards the first spacer layer 540 can be absorbed. It can be seen that as long as the white insulating layer 530 and the first spacer layer 540 have sufficient width in the second direction D2, it is possible to avoid the problem of color mixing caused by the light from the light emitting diode 122B being transmitted or reflected and then traveling to the first color region C1 or the third color region C3.

[0134] In some embodiments, the light emitting diode 122 and the light shielding layer 114 in the second color region C2 can also be green light. In other words, by providing a white insulating layer 530 that can partially reflect light and transmit some light in a color region where the light emitting diode 122 and the light filtering layer 112 have the same color, it is possible to avoid the problem of color mixing between color regions. In addition, by stacking the white insulating layer 530 composed of a reflective photoresist material and the first spacer layer 540 composed of an absorptive photoresist material in the first direction D1 and not repeating the stacking in the second direction D2, the width of the light shielding structure (i.e., the overall structure of the white insulating layer 530 and the first spacer layer 540) in the second direction D2 can be reduced. In this way, the interval distance between adjacent pixels can be reduced, so that the number of pixels can be increased and the resolution of the display panel 100 can be improved.

[0135] In this embodiment, there is no color conversion layer 160 between the white insulating layer 530 and the second substrate 120. In some other embodiments, there is a color conversion layer 160 between the white insulating layer 530 and the second substrate 120, and another color light converted by the color conversion layer 160 can be absorbed by the first spacer layer 540, or can be absorbed by the first spacer layer 540 after being reflected or scattered by the white insulating layer 530.

[0136] In this embodiment, the projection of the white insulating layer 530 on the first substrate 110 does not overlap with the first color region C1 and the third color region C3, that is, the projection of the white insulating layer 530 on the first substrate 110 is covered within the second color region C2 and the light-shielding layers 114 on both sides thereof. In other words, as long as the light-shielding layer 114 has a sufficient width to shield the white insulating layer 530, it is possible to prevent another color light after color conversion from leaking between the two color regions after being reflected by the white insulating layer 530.

[0137] In this embodiment, the light-filtering layers 112 of the first color region C1 and the third color region C3 are red or green. The light after color conversion in the first color region C1 and the third color region C3 can be reflected toward the light-filtering layer 112 through the white insulating layer 530 to increase the light extraction efficiency.

[0138] In this embodiment, the white insulating layer 530 and the first spacer layer 540 of the display panel 300 can be formed in sequence first, and then the color conversion layer 160 is formed. Therefore, there is also a similar inclination angle between the white insulating layer 530 of this embodiment and the first substrate 110 as Figure 1 the similar one.

[0139] Figure 18 FIG. is a cross-sectional view of a display panel 300a according to some embodiments of the present disclosure. The difference between the display panel 300a and Figure 17 the display panel 300 is that the color conversion layer 260 of the display panel 300a can be formed by patterning first, and then the white insulating layer 530 and the first spacer layer 540 are formed. Therefore, the side of the white insulating layer 530 of the display panel 300a close to the second substrate 120 is wider than the side close to the first substrate 110, and there is no color conversion layer 260 located between the white insulating layer 530 and the second substrate 120. In addition, in some embodiments, the first spacer layer 540 may overlap with a part of the color conversion layer 260. The configurations of the first color region C1 and the third color region C3 are the same as those of Figure 17 the display panel 300, and the display panel 300a and Figure 17 the display panel 300 have similar technical effects, which will not be elaborated herein.

[0140] According to the above embodiments of the present disclosure, by disposing a single-layer reflective layer between the first spacer layer and the second spacer layer, or disposing the reflective layer adjacent to the first spacer layer, or not stacking the white insulating layer and the first spacer layer repeatedly in the sub-pixel arrangement direction, the width of the light-shielding structure formed by the above structure in the sub-pixel arrangement direction can be reduced. Therefore, the interval distance between sub-pixels is reduced, so that the number of pixels can be increased and the resolution of the display panel can be improved.

[0141] Although the present disclosure has been disclosed as above by way of examples, it is not intended to limit the present disclosure. Any person skilled in the art can make various changes and modifications without departing from the concept and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to that defined by the claims.

Claims

1. A display panel, comprising: A first substrate, comprising a light filtering layer and a light shielding layer; A second substrate, disposed opposite to the first substrate; A light emitting diode, disposed on the second substrate; A white insulating layer, located on the second substrate and protruding towards the first substrate, wherein the white insulating layer overlaps with the light filtering layer and the light shielding layer in a direction perpendicular to the first substrate; and A first spacer layer, disposed between the second substrate and the white insulating layer, wherein the first spacer layer overlaps with the light shielding layer in this direction, and the white insulating layer overlaps with the first spacer layer in this direction.

2. The display panel according to claim 1, wherein the white insulating layer is composed of a reflective photoresist material, and the first spacer layers are composed of a light absorbing photoresist material.

3. The display panel according to claim 1, wherein the light filtering layer overlaps with the light emitting diode in a direction perpendicular to the first substrate and the second substrate.

4. The display panel according to claim 1, wherein the first substrate further comprises: A protective film, covering the light filtering layer, wherein the material of the protective film is a transparent conductive layer.

5. The display panel according to claim 1, wherein the display panel further comprises: A color conversion layer, located between the light filtering layer and the light emitting diode.

6. The display panel according to claim 1, wherein the light emitting diode has the same color as the light filtering layer.

7. The display panel according to claim 1, comprising a plurality of light emitting diodes corresponding to a first color region, a second color region, and a third color region respectively, wherein the first color region further comprises: A color conversion layer, located between the first substrate and the second substrate, and the color conversion layer overlaps with the light filtering layer in a direction substantially perpendicular to the first substrate.

8. The display panel according to claim 7, wherein the light emitting diodes corresponding to the second color region and the third color region emit blue light and green light respectively, and the light filtering layer of the first color region is red.

9. The display panel according to claim 1, wherein a part of the light from the light emitting diode is reflected or scattered by the white insulating layer, and another part of the light energy penetrates through the white insulating layer.

10. The display panel according to claim 9, wherein the white insulating layer is disposed in a color region where the light emitting diode and the light filtering layer have the same color.

11. The display panel according to claim 2, wherein the white insulating layer and the first spacer layer are stacked in a direction perpendicular to the first substrate and the second substrate, and do not overlap and stack in a direction parallel to the first substrate and the second substrate.

12. The display panel according to claim 1, wherein there is no color conversion layer between the white insulating layer and the second substrate.

13. The display panel according to claim 1, wherein there is a color conversion layer between the white insulating layer and the second substrate, and another color light energy converted by the color conversion layer can be absorbed by the first spacer layer, or can be absorbed by the first spacer layer after being reflected or scattered by the white insulating layer.

14. The display panel according to claim 7, wherein the projection of the white insulating layer on the first substrate does not overlap with the first color region and the third color region.

15. The display panel according to claim 7, wherein the light filtering layers of the first color region and the third color region are red or green, and the light energy after color conversion in the first color region and the third color region is reflected toward the light filtering layer through the white insulating layer.

16. The display panel according to claim 5, wherein the white insulating layer and the first spacer layer of the display panel can be formed in sequence first, and then the color conversion layer is formed.

17. The display panel according to claim 5, wherein the color conversion layer of the display panel can be formed by patterning first, and then the white insulating layer and the first spacer layer are formed.

18. The display panel according to claim 17, wherein the side of the white insulating layer of the display panel close to the second substrate is wider than the side close to the first substrate, and no color conversion layer is located between the white insulating layer and the second substrate.

19. The display panel according to claim 17 or 18, wherein the first spacer layer can overlap with a part of the color conversion layer.

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