Display device

Abstract

A display device includes a pixel unit including a first region and a second region, the first region including a first sub-pixel and a barrier layer, the first sub-pixel including a first light emitting element emitting a first color light and a first color conversion structure emitting a second color light, the first color conversion structure covers the first light-emitting element on the first light-emitting element and converts a first color into a second color, the barrier layer surrounds the first light-emitting element, the second region comprises a second sub-pixel, a third sub-pixel and a scattering particle layer, the second sub-pixel comprises a second light-emitting element, the second light-emitting element emits light of a third color, and the scattering particle layer emits light of the third color. The third sub-pixel comprises a third light-emitting element, the third light-emitting element emits the first color light, and the scattering particle layer is located between the second light-emitting element and the third light-emitting element, located on at least one side of the second light-emitting element and located on at least one side of the third light-emitting element.

Description

Technical Field

[0001] The invention relates to a display device. Background Art

[0002] The color conversion structure of micro light-emitting diode (μLED) includes a wall bank, a color conversion layer, and an optically clear adhesive (OCA). The wall bank has a high optical density value, which can effectively suppress the cross talk phenomenon of color conversion light. When the resolution is improved, it is difficult for the wall bank material to have both high optical density value and high aspect ratio. Although the sub-pixel wall bank structure of the non-color conversion layer can reduce the pixel size to meet the resolution requirements, the point light source characteristics of the micro light-emitting diode will also be affected by the distance between the wall banks and the high optical density characteristics of the wall banks, resulting in a significant change in the picture quality. Effectively arranging the color conversion structure in the micro light-emitting diode, including the wall bank structure, the color conversion layer, and the optical packaging layer, is very important for the image quality of the micro light-emitting diode. Summary of the invention

[0003] The present invention provides a display device, including a pixel unit, the pixel unit including a first area and a second area, the first area including a first sub-pixel and a blocking layer, the first sub-pixel including a first light-emitting element and a color conversion structure, the first light-emitting element emits a first color light, the first color conversion structure covers the first light-emitting element and converts the first color into a second color, the blocking layer surrounds the first light-emitting element, the second area includes a second sub-pixel, a third sub-pixel and a scattering particle layer, the second sub-pixel includes a second light-emitting element, the second light-emitting element emits a third color light, the third sub-pixel includes a third light-emitting element, the third light-emitting element emits the first color light, and the scattering particle layer is located between the second light-emitting element and the third light-emitting element, at least on one side of the second light-emitting element, and at least on one side of the third light-emitting element.

[0004] Based on the above, the first color conversion structure covers the first light-emitting element, the blocking layer surrounds the first light-emitting element, and the scattering particle layer is located between the second light-emitting element and the third light-emitting element, at least one side of the second light-emitting element, and at least one side of the third light-emitting element. In this way, the display device can effectively suppress the color conversion light cross talk phenomenon, and the display device can have better image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1Ais a top view schematic diagram of a pixel unit according to an embodiment of the present invention.

[0006] Figure 1B for Figure 1A Schematic cross-section along line II'.

[0007] Figure 1C FIG. 4 is a diagram showing the relationship between the viewing angle and the brightness of a second sub-pixel according to an embodiment of the present invention.

[0008] Figure 1D FIG. 4 is a diagram showing the relationship between the third sub-pixel viewing angle and brightness according to an embodiment of the present invention.

[0009] Figure 2A FIG. 4 is a top view schematic diagram of a pixel unit according to an embodiment of the present invention.

[0010] Figure 2B for Figure 2A Schematic cross-section along line II'.

[0011] Figure 3A FIG. 4 is a top view schematic diagram of a pixel unit according to an embodiment of the present invention.

[0012] Figure 3B for Figure 3A Schematic cross-section along the section line AA' and the section line BB'.

[0013] Wherein, the reference numerals are:

[0014] 100A, 100B, 100C: pixel unit

[0015] 110: first substrate

[0016] 120: Second substrate

[0017] 121: first sub-pixel

[0018] 121A: first light emitting element

[0019] 121B, 123B, 125B: Electrode

[0020] 121C: First color conversion structure

[0021] 121S1, 123S1, 125S1: First side

[0022] 121S2, 123S2, 125S2: Second side

[0023] 121S3, 123S3, 125S3: Third side

[0024] 121S4, 123S4, 125S4: Fourth side

[0025] 123: second sub-pixel

[0026] 123A: Second light emitting element

[0027] 125: The third sub-pixel

[0028] 125A: third light emitting element

[0029] BM, BM': Shading element

[0030] CF1, CF2: filter layer

[0031] C1: First color

[0032] C2: Second color

[0033] C3: Third Color

[0034] D1: First direction

[0035] D2: Second direction

[0036] D3: Third direction

[0037] L1, L2: Spacing

[0038] OC, OC': Optically clear adhesive layer

[0039] R1: Zone 1

[0040] R2: Second Zone

[0041] SOC: Scattering particle layer

[0042] SP: Scattering particles

[0043] WB: retaining wall DETAILED DESCRIPTION

[0044] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0045] Figure 1A is a top view schematic diagram of a pixel unit according to an embodiment of the present invention, Figure 1B for Figure 1A Please also refer to the cross-sectional diagram along the section line I-I' Figure 1A and Figure 1BThe display device includes a pixel unit 100A, the pixel unit 100A includes a first region R1 and a second region R2, the first region R1 includes a first sub-pixel 121 and a blocking layer WB, the first sub-pixel 121 includes a first light-emitting element 121A and a first color conversion structure 121C, the first light-emitting element 121A emits light of a first color C1, the first color conversion structure 121C is disposed on the first light-emitting element 121A to cover the first light-emitting element 121A and is suitable for converting the light of the first color C1 emitted by the first light-emitting element 121A into light of a second color C2, and the blocking layer WB surrounds the first light-emitting element 121A.

[0046] The second region R2 includes a second sub-pixel 123, a third sub-pixel 125, a blocking layer WB and a scattering particle layer SOC, the second sub-pixel 123 includes a second light-emitting element 123A, which emits light of a third color C3, the third sub-pixel 125 includes a third light-emitting element 125A, which emits light of a first color C1, and the scattering particle layer SOC is located between the second light-emitting element 123A and the third light-emitting element 125A, on at least one side of the second light-emitting element 123A, and on at least one side of the third light-emitting element 125A.

[0047] like Figure 1B As shown, the display device further includes a first substrate 110 and a second substrate 120. The first substrate 110 and the second substrate 120 may be light-transmitting substrates. In the third direction D3 (in the Z-axis direction), the second substrate 120 is disposed on the first substrate 110, and the first light-emitting element 121A, the second light-emitting element 123A, and the third light-emitting element 125A are disposed on the first substrate 110. The material of the first substrate 110 or the second substrate 120 may be a plate-like object with support that can reduce the bending, wrinkling, and / or deformation of the first substrate 110 or the second substrate 120. For example, the material of the first substrate 110 or the second substrate 120 may include glass, quartz, or other suitable materials, or a combination of the above materials, but the present invention is not limited thereto.

[0048] In some embodiments, the first substrate 110 can be solidified from a liquid and / or gel-like initial material. The method for forming the first substrate 110 may include coating the liquid and / or gel-like initial material on the first substrate 110, and then using a curing process to cure the liquid and / or gel-like initial material to form a flexible first substrate 110, wherein the curing process that can be used includes thermal curing, photocuring, or a combination of the above curing processes, but the present invention is not limited to this. The material of the first substrate 110 may include a single-layer structure of polyimide (PI), polyethylene terephthalate (PET), or one of other applicable materials, or a stack or mixture of at least two of the above materials, but is not limited to this. In other words, the first substrate 110 can be a single-layer substrate or a multi-layer substrate formed by stacking multiple layers.

[0049] In some embodiments, the first substrate 110 may be a circuit board, an active component substrate, or other substrates that can be used to provide driving signals and / or power to the first sub-pixel 121, the second sub-pixel 123, and the third sub-pixel 125. When the first substrate 110 is a circuit board, the first substrate 110 may include multiple conductive circuit layers and multiple insulating layers for separating the multiple conductive circuit layers, but is not limited thereto.

[0050] Specifically, the first substrate 110 includes an electrode 121B for electrically connecting the first light-emitting element 121A, an electrode 123B for electrically connecting the second light-emitting element 123A, and an electrode 125B for electrically connecting the third light-emitting element 125A. The electrode 121B, the electrode 123B, and the electrode 125B may be pixel electrodes of the first sub-pixel 121, the second sub-pixel 123, and the third sub-pixel 125, respectively, but are not limited to this.

[0051] The light-emitting element may include, for example, an organic light emitting diode (OLED), a sub-millimeter light-emitting diode (mini LED), a micro LED or a quantum dot light-emitting diode (QD, which may be, for example, QLED, QDLED), fluorescence, phosphor or other suitable materials, and the materials may be arranged and combined in any manner, but are not limited thereto.

[0052] The first color conversion structure 121C may be a quantum dot color conversion structure or a polymer color conversion structure. The first color conversion structure 121C can absorb short-wavelength light and convert it into long-wavelength light. For example, the first color conversion structure 121C can absorb short-wavelength ultraviolet light (wavelength range of about 1nm to 380nm), purple light (wavelength range of about 380nm to 450nm), blue light (wavelength range of about 450nm to 495nm), and convert it into long-wavelength red light (wavelength range of about 620nm to 750nm), yellow light (wavelength range of about 570nm to 590nm), or green light (wavelength range of about 495nm to 570nm). The first color conversion structure 121C is disposed on the first light-emitting element 121A and is used to absorb and convert the light emitted by the first light-emitting element 121A. As a result, the light emitted by the first light emitting element 121A is short-wavelength light that can be absorbed by the first color conversion structure 121C, such as blue light, ultraviolet light, or deep ultraviolet light.

[0053] The wavelength of light that can be emitted by the first color conversion structure 121C after absorbing the short-wavelength light can be determined according to the material, microstructure and other parameters of the first color conversion structure 121C. Therefore, based on the selection of the material, the light emitted by the first color conversion structure 121C can have a specific color and be different from the color of the absorbed light. In this embodiment, the first light-emitting element 121A emits light of the first color C1. The first color conversion structure 121C is disposed on the first light-emitting element 121A and is suitable for converting the light of the first color C1 emitted by the first light-emitting element 121A into light of the third color C3.

[0054] The second sub-pixel 123 includes a second light-emitting element 123A. The second light-emitting element 123A emits light of a second color C2. The light of the second color C2 is different from the light of the first color C1. The wavelength of the light emitted by the second light-emitting element 123A is greater than the wavelength of the light emitted by the first light-emitting element 121A. The first color C1 is, for example, blue, and the second color C2 may be light with a wavelength greater than blue, such as green, yellow, or red, and the third color C3 may be light with a wavelength greater than green, such as yellow or red.

[0055] The third sub-pixel 125 may be adjacent to the first sub-pixel 121 or the third sub-pixel 125 may be adjacent to the second sub-pixel 123. In other words, the third sub-pixel 125 is adjacent to at least one of the first sub-pixel 121 or the second sub-pixel 123. The third sub-pixel 125 includes a third light-emitting element 125A. The third light-emitting element 125A emits light of the first color C1. In this way, the first sub-pixel 121, the second sub-pixel 123 and the third sub-pixel 125 are respectively used to present the third color C3, the second color C2 and the first color C1, thereby realizing a colorful screen of the display device. In some embodiments, the first color C1, the second color C2 and the third color C3 are blue, green and red, respectively, but are not limited thereto. For example, the first color C1, the second color C2 and the third color C3 can be three different colors of light in visible light, respectively.

[0056] In some embodiments, the first sub-pixel 121, the second sub-pixel 123, and the third sub-pixel 125 may be arranged in a first color sequence or a second color sequence along the first direction D1. The so-called color sequence refers to the order of the light-emitting colors of the sub-pixels arranged in sequence. For example, the first color sequence is red-green-blue, and the second color sequence is blue-green-red.

[0057] Figure 1C FIG. 4 is a diagram showing the relationship between the viewing angle and the brightness of a second sub-pixel according to an embodiment of the present invention. Figure 1D 1 is a diagram showing the relationship between the viewing angle and the brightness of the third sub-pixel according to an embodiment of the present invention. The scattering particle layer SOC is located between the second light-emitting element 123A and the third light-emitting element 125A, at least one side of the second light-emitting element 123A, and at least one side of the third light-emitting element 125A, which can effectively suppress the color conversion light crosstalk phenomenon, and the light-emitting device is less likely to have light color deviation at a large angle.

[0058] For example, when the light-emitting device is viewed at a large angle from a location adjacent to the first sub-pixel 121, since the first sub-pixel 121 is closer to the viewer and the third-color sub-pixel 125 is farther from the viewer, the scattering particle layer SOC is located between the second light-emitting element 123A and the third light-emitting element 125A, and thus the color conversion light cross talk phenomenon can be effectively suppressed, and the light-emitting device is less likely to have a light color shift at a large angle. In addition, when the light-emitting device is viewed at a large angle from a location adjacent to the third sub-pixel 125, since the third sub-pixel 125 is closer to the viewer and the first-color sub-pixel 121 is farther from the viewer, since the scattering particle layer SOC is located between the second light-emitting element 123A and the third light-emitting element 125A, the color conversion light cross talk phenomenon can be effectively suppressed, and the light-emitting device is less likely to have a light color shift at a large angle.

[0059] Figure 1C and Figure 1D The comparison between adding the scattering particle layer SOC and the optically transparent adhesive layer OC to the second sub-pixel 123 and the third sub-pixel 125 and adding only the optically transparent adhesive layer OC in the conventional method is described respectively. Figure 1C and Figure 1D It can be seen that when the scattering particle layer SOC is located between the second light-emitting element 123A and the third light-emitting element 125A, the brightness of the second sub-pixel 123 and the third sub-pixel 125 at each viewing angle is uniform and symmetrical. Therefore, the viewer sees that the overall light-emitting color of the light-emitting device is not likely to be biased toward the color of the first color sub-pixel 121, the color of the second color sub-pixel 123, and the color of the third color sub-pixel 125. In other words, the color deviation of the light-emitting device 100 can be improved.

[0060] In detail, the display device is filled with an optically transparent adhesive layer OC to effectively inhibit water and oxygen penetration and thus improve the average roughness (arithmetic average roughness, RA). The addition of high refractive index scattering particles SP to the scattering particle layer SOC can also increase the light output viewing angle. The optically transparent adhesive layer OC covers the second light-emitting element 123A or the third light-emitting element 125A, and the scattering particle layer SOC surrounds the second light-emitting element 123A or the third light-emitting element 125A. The photoresist packaging layer can achieve this structure. Please refer to Figure 1C and Figure 1D , the figure shows that the viewing angle distribution of the second sub-pixel 123 or the third sub-pixel 125 can be bilaterally symmetrical, and slightly decreases at an angle of 30 degrees due to the junction of the transparent-high-refractive packaging layer, and the brightness at the positive viewing angle is slightly higher than that of the display device with only the optically transparent adhesive layer OC packaging. Therefore, the display device of the present invention uses a composite packaging (optically transparent adhesive layer OC + scattering particle layer SOC) to not only maintain the original luminous brightness of the original display device, but also effectively adjust and solve the viewing angle offset problem, thereby improving the display quality of the display device.

[0061] Please refer to Figure 1B In this embodiment, the first region R1 may further include a first filter layer CF1, and the first color conversion layer 121C is disposed between the first filter layer CF1 and the first light-emitting element 121A. The second region R2 may further include a second filter layer R2 disposed on the second light-emitting element 123A and the third light-emitting element 125A.

[0062] The first region R1 further includes an optically transparent adhesive layer OC, the filter layer CF1 is disposed on the first color conversion layer 121C, and the optically transparent adhesive layer OC is disposed between the filter layer CF1 and the first color conversion layer 121C. The second region R2 further includes an optically transparent adhesive layer OC, the filter layer CF2 is disposed on the second light-emitting element 123A, and the optically transparent adhesive layer OC is disposed between the filter layer CF2 and the second light-emitting element 123A.

[0063] The optically transparent adhesive layer OC can selectively provide functions required by the display device, such as a moisture barrier function, an optical adjustment function, etc., to improve the optical quality of the display device. The thickness of the optically transparent adhesive layer OC in the first region R1 along the third direction D3 (Z-axis direction) is less than the thickness of the optically transparent adhesive layer OC in the second region R2 along the third direction D3 (Z-axis direction).

[0064] The filter layer CF1 of the first region R1 and the filter layer CF2 of the second region R2 are both disposed on the surface of the second substrate 120 facing the first substrate 110. The filter layer can be used to improve color purity. For example, the filter layer may include an absorptive color resist, and the filter layer CF1 can allow at least part of the third color C3 light to pass through and filter the remaining color light. If there is no filter layer CF1 on the first color conversion structure 121C, the third color C3 light is the light that passes through the first color conversion structure 121C. If there is a filter layer / filter pattern on the first color conversion structure 121C, the third color C3 light is the light that passes through the filter layer CF1.

[0065] The blocking layer WB is disposed on the surface of the first substrate 110 facing the second substrate 120. The material of the blocking layer WB may include a light absorbing material, such as black photoresist, white photoresist or photoresist of other colors, but is not limited thereto. In some embodiments, although not shown, in addition to the light absorbing material, the material of the blocking layer WB may also include light scattering particles, but is not limited thereto. In other embodiments, the material of the blocking layer WB may include a light-transmitting material (such as a transparent photoresist) and a reflective layer or a light-absorbing layer disposed on the light-transmitting material.

[0066] The plurality of light shielding elements BM may be disposed on the surface of the first substrate 110 facing the second substrate 120 and between the barrier layer WB and the second substrate 120. The material of the plurality of light shielding elements BM may include black resin, gray resin, white resin or metal, but is not limited thereto.

[0067] Please refer to Figure 1A , viewed from above, the first color conversion structure 121C, the blocking layer WB, and the scattering particle layer SOC may be sequentially disposed along the first direction D1 (X-axis direction) between the first light-emitting element 121A and the second light-emitting element 123A.

[0068] As viewed from above, the first light emitting element 121A, the second light emitting element 123A and the third light emitting element 125A are sequentially arranged along the first direction D1, the first light emitting element 121A defines a first side 121S1 and a second side 121S2 along the first direction D1, the second light emitting element 123A defines a first side 123S1 and a second side 123S2 along the first direction D1, and the third light emitting element 125A defines a first side 125S1 and a second side 125S2 along the first direction D1, respectively. The distance between the second side 121S2 of 21A and the first side 123S1 of the second light-emitting element 123A is smaller than the distance between the first side 121S1 of the first light-emitting element 121A and the first side 123S1 of the second light-emitting element 123A, and the distance between the second side 123S2 of the second light-emitting element 123A and the first side 125S1 of the third light-emitting element 125A is smaller than the distance between the first side 121S1 of the second light-emitting element 123A and the first side 123S1 of the third light-emitting element 125A.

[0069] From the top view, the scattering particle layer SOC may be disposed between the second side 123S2 of the second light emitting element 123A and the first side 125S1 of the third light emitting element 125A. In some embodiments, there is no spacing between the scattering particle layer SOC and the second side 123S2 of the second light emitting element 123A and the first side 125S1 of the third light emitting element 125A.

[0070] It should be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein similar numbers are used to represent the same or similar components, and the description of the same technical contents is omitted. The description of the omitted parts can refer to the previous embodiments, and the following embodiments will not be repeated.

[0071] Figure 2A is a top view schematic diagram of a pixel unit according to an embodiment of the present invention, Figure 2B for Figure 2A Schematic diagram of the section along the section line I-I'. Please also refer to Figure 2A and Figure 2B The pixel unit 100B is similar to the pixel unit 100A, and the main difference is that, viewed from above, the blocking layer WB may be disposed between the second side 121S2 of the first light-emitting element 121A and the first side 123S1 of the second light-emitting element 123A, and a spacing L1 may be provided between the blocking layer WB and the first side 123S1 of the second light-emitting element 123A along the first direction D1, and the range of the spacing L1 is, for example, less than or equal to 12 micrometers and greater than or equal to 1 micrometer.

[0072] As viewed from above, the second light-emitting elements 123A of the second region R2 may be sequentially arranged along the second direction D2 (Y-axis direction), each second light-emitting element 123A having a third side 123S3 and a fourth side 123S4 along the second direction D2, a distance between the third side 123S3 of each second light-emitting element 123A and the fourth side 123S4 of the second light-emitting element 123A adjacent to the second direction D2 is smaller than a distance between the third side 123S3 of each second light-emitting element 123A and the third side 123S3 of the second light-emitting element 123A adjacent to the second direction D2, an optically transparent adhesive layer OC and a blocking layer WB are provided between the third side 123S3 of the second light-emitting element 123A and the fourth side 123S4 of the second light-emitting element 123A, and the blocking layer WB is disposed between the optically transparent adhesive layers OC.

[0073] In this embodiment, the distance between the second light emitting element 123A and the third light emitting element 125A and the blocking layer WB may vary depending on the shape of the light emitting element. The commonly used light emitting element is a long strip. Due to the pixel configuration of the display device, the distance between the light emitting element and the upper and lower adjacent blocking layers WB is longer, and the distance between the light emitting element and the left and right adjacent blocking layers WB is closer. The viewing angle narrowing ratio is inversely proportional to the distance of the blocking wall, resulting in the upper and lower viewing angle being greater than the left and right viewing angle. From the top view direction, the second light emitting element 123A and the third light emitting element 125A can be packaged with an optically transparent adhesive layer OC in the upper and lower directions (the second direction D2), and can be packaged with a scattering particle layer SOC in the left and right directions (the first direction D1). The upper and lower viewing angles can maintain better light extraction efficiency, and the left and right viewing angles can be improved by composite packaging (optically transparent adhesive layer OC + scattering particle layer SOC) to improve the viewing angle and maintain the light extraction efficiency, so that the display device can have better display quality.

[0074] The third side 123S3 of the second light emitting element 123A and the fourth side 123S4 of the second light emitting element 123A sequentially arranged along the second direction D2 have a spacing L2, the spacing L1 is smaller than the spacing L2, and the spacing L2 is less than or equal to 50 microns and greater than or equal to 15 microns.

[0075] Figure 3A is a top view schematic diagram of a pixel unit according to an embodiment of the present invention, Figure 3B for Figure 3ASchematic cross-section along section line A-A' and section line BB'. The pixel unit 100C is similar to the pixel unit 100A, and the main difference is that, from the top view, the third side 121S3 of the first light-emitting element 121A, the third side 123S3 of the second light-emitting element 123A, and the third side 123S3 of the third light-emitting element 125A can be sequentially provided with an optically transparent adhesive layer OC' and a light-shielding element BM' along the second direction D2, and the optically transparent adhesive layer OC' is located between the light-shielding element BM' and the first light-emitting element 121A or the second light-emitting element 123A or the third light-emitting element 125A, and there is no barrier between the shielding element BM' and the optically transparent adhesive layer OC'. The blocking layer WB, the shading element BM' is adjacent to the third side 121S3 of the first light-emitting element 121A, the third side 123S3 of the second light-emitting element 123A and the third side 125S3 of the third light-emitting element 125A, that is, the normal direction (second direction D2) of the shading element BM' is parallel to the normal direction (second direction D2) of the third side 121S3 of the first light-emitting element 121A, the normal direction (second direction D2) of the third side 123S3 of the second light-emitting element 123A and the normal direction (second direction D2) of the third side 125S3 of the third light-emitting element 125A. The first color C1 light and the third color C3 light can be emitted from the first side 121S1 adjacent to the first light-emitting element 121A, the fourth side 121S4 of the first light-emitting element 121A, the fourth side 123S4 of the second light-emitting element 123A, the fourth side 125S4 of the third light-emitting element 125A, and the second side 125S2 of the third light-emitting element 125A, but the first color C1 light and the third color C3 light on the third side 121S3 of the first light-emitting element 121A, the third side 123S3 of the second light-emitting element 123A, and the third side 125S3 of the third light-emitting element 125A are shielded by the shading element BM', that is, the display device has only three light-emitting surfaces.

[0076] The optically transparent adhesive layer OC and the optically transparent adhesive layer OC′ may have different refractive indices. In some embodiments, the refractive index of the optically transparent adhesive layer OC is greater than the refractive index of the optically transparent adhesive layer OC′, but the present invention is not limited thereto.

[0077] When the vehicle display device or the central information display (CID) display is located near the windshield, the image projection will interfere with the line of sight. Therefore, the composite packaging material stack of the present invention can be used to reduce the light emitted in a specific direction and recycle it to other directions on a specific side of the display device to reduce the optical loss of the display device. In addition, the shading element BM' can be used to effectively control the brightness of the light-emitting surface of the display, reduce the impact of the projected image, and improve the display quality.

[0078] In some embodiments, the shading element BM' may be disposed adjacent to the first side 121S1 of the first light-emitting element 121A, that is, the normal direction (first direction D1) of the shading element BM' is parallel to the normal direction (first direction D1) of the first side 121S1 of the first light-emitting element 121A, the optically transparent adhesive layer OC' is located between the shading element BM' and the first light-emitting element 121A, and there is no blocking layer WB between the shading element BM' and the optically transparent adhesive layer OC'. The first color C1 light and the third color C3 light may be transmitted from the third side adjacent to the first light-emitting element 121A. The first color C1 light and the third color C3 light on the first side 121S1 of the first light-emitting element 121A are shielded by the shading element BM', that is, the display device has only three light-emitting surfaces.

[0079] In some embodiments, the shading element BM' may be disposed adjacent to the second side 125S2 of the third light emitting element 125A, that is, the normal direction (first direction D1) of the shading element BM' is parallel to the normal direction (first direction D1) of the second side 125S5 of the third light emitting element 125A, the optically transparent adhesive layer OC' is located between the shading element BM' and the third light emitting element 125A, and there is no blocking layer WB between the shading element BM' and the optically transparent adhesive layer OC', and the first color C1 light and the third color C3 light can be transmitted from the first side adjacent to the first light emitting element 121A. The first color C1 light and the third color C3 light on the second side 125S2 of the third light-emitting element 125A are shielded by the shading element BM', that is, the display device has only three light-emitting surfaces.

[0080] In some embodiments, the light shielding element BM' may be disposed adjacent to the fourth side 121S4 of the first light emitting element 121A, the fourth side 123S4 of the second light emitting element 123A, and the fourth side 125S4 of the third light emitting element 125A, that is, the normal direction (the second direction D2) of the light shielding element BM' is parallel to the normal direction (the second direction D2) of the fourth side 121S4 of the first light emitting element 121A, the normal direction (the second direction D2) of the fourth side 123S4 of the second light emitting element 123A, and the normal direction (the second direction D2) of the fourth side 125S4 of the third light emitting element 125A, and the optically transparent adhesive layer OC' is located between the light shielding element BM' and the first light emitting element 121A or the second light emitting element 123A or the third light emitting element 125A. 5A, there is no blocking layer WB between the shielding element BM' and the optically transparent adhesive layer OC', the first color C1 light and the third color C3 light can be emitted from the first side 121S1 adjacent to the first light-emitting element 121A, the third side 121S3 of the first light-emitting element 121A, the third side 123S3 of the second light-emitting element 123A, the third side 123S3 of the third light-emitting element 125A and the second side 125S3 of the third light-emitting element 125A, but the first color C1 light and the third color C3 light on the fourth side 121S4 of the first light-emitting element 121A, the fourth side 123S4 of the second light-emitting element 123A and the fourth side 121S4 of the third light-emitting element 125A are shielded by the shading element BM', that is, the display device has only three light-emitting surfaces.

[0081] In summary, the first color conversion structure of the present invention covers the first light-emitting element, the blocking layer surrounds the first light-emitting element, and the scattering particle layer is located between the second light-emitting element and the third light-emitting element, at least one side of the second light-emitting element, and at least one side of the third light-emitting element. In this way, the display device can effectively suppress the color conversion light cross talk phenomenon, and the display device can have better image quality.

[0082] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A display device, characterized in that: include: Pixel unit, including: The first zone includes: The first sub-pixel includes: A first light emitting element that emits light of a first color; and A first color conversion structure, disposed on the first light-emitting element and covering the first light-emitting element and adapted to convert the first color light emitted by the first light-emitting element into the second color light; and a barrier layer surrounding the first light emitting element; and The second zone includes: The second sub-pixel includes: a second light emitting element emitting light of a third color; The third sub-pixel includes: a third light emitting element that emits light of a first color; and A scattering particle layer, wherein the scattering particle layer is located between the second light-emitting element and the third light-emitting element, at least one side of the second light-emitting element, and at least one side of the third light-emitting element.

2. The display device according to claim 1, wherein: The first region further includes a first filter layer, and the first color conversion layer is disposed between the first filter layer and the first light-emitting element.

3. The display device according to claim 1, wherein: The second region further includes a second filter layer disposed on the second light-emitting element and the third light-emitting element.

4. The display device according to claim 1, wherein: The first region further includes a first filter layer and a first optically transparent adhesive layer. The first filter layer is disposed on the first color conversion layer. The first optically transparent adhesive layer is disposed between the first filter layer and the first color conversion layer.

5. The display device according to claim 4, characterized in that The second region further includes a second filter layer and a second optically transparent adhesive layer. The second filter layer is disposed on the second light-emitting element. The second optically transparent adhesive layer is disposed between the second filter layer and the second light-emitting element.

6. The display device according to claim 5, characterized in that The thickness of the first optically transparent adhesive layer along the third direction is smaller than the thickness of the second optically transparent adhesive layer along the third direction.

7. The display device according to claim 1, wherein: Wherein, viewed from above, the first color conversion structure, the blocking layer, and the scattering particle layer are sequentially arranged along a first direction between the first light-emitting element and the second light-emitting element.

8. The display device according to claim 1, wherein: Wherein, viewed from above, the blocking layer is disposed between the second side of the first light-emitting element and the first side of the second light-emitting element, and the scattering particle layer is disposed between the second side of the second light-emitting element and the first side of the third light-emitting element.

9. The display device according to claim 8, wherein: Wherein, viewed from above, there is a first spacing between the blocking layer and the first side of the second light-emitting element along the first direction, there is a second spacing between the third side of the second light-emitting element and the fourth side of the second light-emitting element sequentially arranged along the second direction, and the first spacing is smaller than the second spacing.

10. The display device according to claim 9, characterized in that The first spacing is in a range of less than or equal to 12 micrometers and greater than or equal to 1 micrometer.

11. The display device according to claim 9, wherein: The second spacing is in the range of less than or equal to 50 micrometers and greater than or equal to 15 micrometers.

12. The display device according to claim 5, characterized in that Wherein, viewed from above, the blocking layer is disposed between the third side and the fourth side of the second light-emitting elements sequentially arranged along the second direction in the second region, and the blocking layer is disposed between the second optically transparent adhesive layers.

13. The display device according to claim 4, characterized in that Wherein, viewed from the top, a third optically transparent adhesive layer and a shading element are sequentially arranged on the third side of the second light-emitting element along the second direction, and the third optically transparent adhesive layer is located between the shading element and the second light-emitting element.

14. The display device according to claim 13, wherein: The first optically transparent adhesive layer and the third optically transparent adhesive layer have different refractive indices.

15. The display device according to claim 14, wherein: The refractive index of the first optically transparent adhesive layer is greater than the refractive index of the third optically transparent adhesive layer.

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