Display screen, method for manufacturing display screen, and electronic device

Abstract

The application provides a display screen (1), a display screen manufacturing method and an electronic device (2). The display screen (1) comprises a driving backboard (10), a light-emitting layer (11), a color block layer (12) and a light-transmitting layer (13). The light-emitting layer (11) is arranged on the driving backboard (10) and comprises a plurality of sub-pixel units (110). The color block layer (12) is located on the light-emitting side of the light-emitting layer (11) and comprises a plurality of sub-color blocks (1201). Each sub-color block (1201) corresponds to each sub-pixel unit (110). One side of the light-transmitting layer (13) connected with the color block layer (12) is formed into a semi-transparent and semi-reflective surface (130). Through the part of the semi-transparent and semi-reflective surface (130) corresponding to one sub-color block (1201), light emitted by the corresponding sub-pixel unit (110) can be transmitted, and light emitted by other non-corresponding sub-pixel units (110) can be reflected, so that the light cross problem between the sub-color blocks (1201) is relieved, and the display effect of the display screen (1) is improved.

Description

Technical Field

[0001] This disclosure relates to a display screen, a method for manufacturing a display screen, and an electronic device. Background Technology

[0002] In some displays (such as those using MicroLED and OLED technologies), the brightness of the displayed light is adjusted by mapping each sub-pixel unit of the light-emitting layer to a sub-color block of the color block layer. This allows the color of the displayed light to be adjusted by the sub-pixel units and the color of the displayed light by the sub-color blocks. However, since each sub-pixel unit can be considered a point light source emitting light, some rays emitted from the sub-pixel unit may strike non-corresponding sub-color blocks at large angles, resulting in crosstalk and causing color shift in the displayed image. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] In existing technologies, since sub-pixel units are approximately point light sources emitting divergent light, some of the light emitted by the sub-pixel units at large angles is directed towards non-corresponding sub-color blocks, resulting in color shift in the displayed image.

[0005] (II) Technical Solution

[0006] This invention discloses a display screen, a method for manufacturing the display screen, and an electronic device, which can block some of the large-angle light from hitting non-corresponding sub-color blocks, thereby alleviating the color shift problem of the displayed image.

[0007] To achieve the above objectives, in a first aspect, the present invention discloses a display screen, the display screen comprising:

[0008] A drive backplane, wherein the drive backplane carries a drive circuit;

[0009] A light-emitting layer is disposed on one side of the driving backplate. The light-emitting layer includes a plurality of sub-pixel units arranged in an array. Each sub-pixel unit is electrically connected to the driving circuit, and each sub-pixel unit is configured to emit light under the drive of the driving circuit.

[0010] A color block layer, located on the light-emitting side of the light-emitting layer, comprises a plurality of arrayed color block units, each color block unit comprising a plurality of sub-color blocks, each sub-color block corresponding to a respective sub-pixel unit, and each sub-color block configured to receive light emitted from the corresponding sub-pixel unit and to emit light of a predetermined wavelength; and

[0011] A light-transmitting layer is formed on the side of the color block layer facing the light-emitting layer. The surface of the light-transmitting layer connected to the color block layer is formed as a semi-transparent and semi-reflective surface. The semi-transparent and semi-reflective surface is configured to receive light emitted from the sub-pixel unit, transmit light emitted from the sub-pixel unit toward the corresponding sub-color block, and reflect light emitted from the sub-pixel unit toward the sub-color block other than the corresponding sub-color block.

[0012] As an optional embodiment of the present invention, the semi-transparent and semi-reflective surface is configured to receive light emitted from the sub-pixel unit, transmit the light with an incident angle less than the included angle θ, and reflect the light with an incident angle greater than or equal to the included angle θ.

[0013] The included angle θ is configured as the angle between the direction from the sub-pixel unit to another sub-color block adjacent to the corresponding sub-color block and the normal of the semi-transparent and semi-reflective surface.

[0014] As an optional embodiment of the present invention, the refractive index of the light-transmitting layer is n1, and the refractive index of the colored block layer connected to the side of the light-transmitting layer is n2, wherein the value of n2 divided by sinθ is less than n1.

[0015] As an optional embodiment of the present invention, along the direction from the light-emitting layer to the color block layer, the distance from the side surface of each sub-pixel unit facing away from the color block layer to each sub-pixel unit is h. Along the direction parallel to the semi-transparent and semi-reflective surface, for any sub-color block, the sub-pixel unit corresponding to the sub-color block and other adjacent sub-color blocks have a distance a.

[0016] As an optional embodiment of the present invention, the material of the light-transmitting layer includes at least one material selected from Al2O3 and TiO2.

[0017] As an optional implementation of this invention, the sub-pixel unit is configured to emit blue light under the action of an electric current;

[0018] Each of the color block units includes at least a first sub-color block, a second sub-color block, and a third sub-color block. The first sub-color block and the second sub-color block include photoluminescent materials, and the third sub-color block is a light-transmitting color block. The first sub-color block is configured to receive blue light emitted from the corresponding sub-pixel unit and emit green light when excited by the blue light emitted by the sub-pixel unit. The second sub-color block is configured to receive blue light emitted from the corresponding sub-pixel unit and emit red light when excited by the blue light emitted by the sub-pixel unit. The third sub-color block is configured to receive blue light emitted from the corresponding sub-pixel unit and transmit it.

[0019] As an optional embodiment of the present invention, the photoluminescent material includes at least quantum dot materials or fluorescent materials.

[0020] As an optional embodiment of the present invention, the display screen further includes a stray light filtering layer. The stray light filtering layer is disposed on the side of the color block layer opposite to the light-emitting layer. The stray light filtering layer includes a first light-shielding structure and a plurality of filtering units arranged in an array on the first light-shielding structure. Each filtering unit includes a plurality of sub-filter blocks. The outer periphery of each sub-filter block is connected to the first light-shielding structure. Each sub-filter block is disposed corresponding to each sub-color block. The sub-filter block is configured to allow light of the predetermined wavelength band corresponding to the corresponding sub-color block to pass through, and to block light outside the predetermined wavelength band.

[0021] As an optional embodiment of the present invention, the color block layer further includes a flattening layer, which is disposed on the side of the color block unit facing the light-transmitting layer, and the side of the flattening layer opposite to the color block unit is connected to the light-transmitting layer, and the surface of the light-transmitting layer connected to the flattening layer is formed as the semi-transparent and semi-reflective surface.

[0022] As an optional embodiment of the present invention, the light-emitting layer and the light-transmitting layer are spaced apart.

[0023] As an optional embodiment of the present invention, the display screen further includes a frame adhesive, which is disposed along the edge of the light-emitting layer and connected between the edge of the light-emitting layer and the color block layer.

[0024] As an optional embodiment of the present invention, the display screen further includes an encapsulation substrate, which is disposed on the side of the color block layer opposite to the light-emitting layer, and the edge of the encapsulation substrate is located on the outer periphery of the color block layer, and the frame adhesive is connected between the edge of the encapsulation substrate and the edge of the light-emitting layer.

[0025] As an optional embodiment of the present invention, a transparent filler is filled between the light-emitting layer and the color block layer, and the frame adhesive is located around the transparent filler.

[0026] Secondly, the present invention discloses a method for manufacturing a display screen, the method comprising:

[0027] A drive backplane is provided, wherein the drive backplane carries the drive circuitry;

[0028] A plurality of sub-pixel units are provided, and the plurality of sub-pixel units are arranged in an array on one side of the driving backplate, such that each sub-pixel unit is electrically coupled to the driving circuit to form a light-emitting layer on one side of the driving backplate.

[0029] A color block layer is provided, the color block layer comprising a plurality of color block units arranged in an array, each color block unit comprising a plurality of sub-color blocks, each sub-color block being configured to receive light emitted from the corresponding sub-pixel unit and to emit light of a predetermined wavelength.

[0030] A light-transmitting layer is formed on one side of the color block layer, such that the surface of the light-transmitting layer connected to the color block layer is formed as a semi-transparent and semi-reflective surface.

[0031] The display screen is obtained by connecting the light-emitting layer and the color block layer.

[0032] As an optional implementation of the present invention, each color block unit includes at least a first sub-color block, a second sub-color block, and a third sub-color block, wherein the first sub-color block and the second sub-color block include photoluminescent materials, and the third sub-color block is a light-transmitting color block;

[0033] The provision of the color patch layer includes:

[0034] Provide light-blocking materials;

[0035] Multiple hollow units are formed in an array on the light-shielding material, and each hollow unit includes a first hollow hole, a second hollow hole and a third hollow hole arranged at intervals.

[0036] Photoluminescent material is filled into the first and second hollow holes to form the first and second sub-color blocks, and light-transmitting material is filled into the third hollow hole to form the third sub-color block, thus obtaining the color block layer;

[0037] The color emitted by the photoluminescent material filling the first hollow hole is different from the color emitted by the photoluminescent material filling the second hollow hole.

[0038] As an optional embodiment of the present invention, the photoluminescent material includes quantum dot materials;

[0039] The process of filling the first and second hollow holes with the photoluminescent material to form the first and second sub-color blocks, and filling the third hollow hole with the translucent material to form the third sub-color block, to obtain the colored block layer, includes:

[0040] Green quantum dot material is filled into each of the first hollow holes using at least one of photolithography, vapor deposition, and inkjet printing processes to form the first sub-color block.

[0041] Red quantum dot material is filled into each of the second hollow holes using at least one of photolithography, vapor deposition, and inkjet printing processes to form the second sub-color block;

[0042] The light-transmitting material is filled into each of the third hollow holes using at least one of the following processes: photolithography, vapor deposition, and inkjet printing, to form the third sub-color block.

[0043] As an optional embodiment of the present invention, the display screen further includes a stray light filtering layer. The stray light filtering layer includes a first light-shielding structure and a plurality of filtering units arranged in an array on the first light-shielding structure. Each filtering unit includes a plurality of sub-filter blocks, and the outer periphery of each sub-filter block is connected to the first light-shielding structure.

[0044] Each of the sub-filter blocks is respectively set to correspond to each of the sub-color blocks in the color block layer, and each of the sub-filter blocks is configured to allow light of the predetermined wavelength band corresponding to the corresponding sub-color block to pass through.

[0045] As an optional embodiment of the present invention, the stray light filtering layer includes multiple arrayed filtering units, each filtering unit including multiple sub-filter blocks, including

[0046] Provide light-blocking materials;

[0047] Multiple through holes are formed in an array on the light-shielding material to form a first light-shielding structure;

[0048] The multiple through holes are filled with filter material to form multiple sub-filter blocks.

[0049] As an optional embodiment of the present invention, the step of connecting the light-emitting layer and the color block layer to obtain the display screen includes:

[0050] A frame adhesive is provided along the edge of the light-emitting layer or along the edge of the colored block layer;

[0051] A transparent filler adhesive is filled into the space enclosed by the frame adhesive.

[0052] The light-emitting layer and the colored block layer are connected by the frame adhesive and the transparent filler adhesive;

[0053] The frame adhesive and the transparent filler adhesive are cured to obtain the display screen.

[0054] Thirdly, the present invention discloses an electronic device, comprising: a display screen as described in the first aspect above.

[0055] Compared with the prior art, the advantages of the present invention are as follows:

[0056] The display screen, the method for manufacturing the display screen, and the electronic device provided in this invention embodiment provide a light-transmitting layer on the side of the color block layer facing the light-emitting layer, and make the connection surface between the light-transmitting layer and the color block layer a semi-transparent and semi-reflective surface. In this way, light emitted by the corresponding sub-pixel unit is transmitted through the semi-transparent and semi-reflective surface corresponding to a sub-color block, and light emitted by other non-corresponding sub-pixel units is reflected, thereby alleviating the light crossing problem between sub-color blocks and improving the display effect of the display screen.

[0057] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings, details of one or more embodiments of the invention being set forth in the following drawings and description.

[0058] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, optional embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0059] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0060] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0061] Figure 1 This is a schematic diagram of the structure of the display screen disclosed in the first aspect of the present invention;

[0062] Figure 2 for Figure 1Enlarged view at point M;

[0063] Figure 3 for Figure 2 A schematic diagram of the decomposed structure in the image;

[0064] Figure 4 This is a flowchart of the steps in the method for manufacturing a display screen disclosed in the second aspect of the present invention;

[0065] Figure 5 This is a partial flowchart of the method for manufacturing a display screen disclosed in the second aspect of the present invention.

[0066] Figure 6 This is a flowchart of step S3 of the display screen manufacturing method disclosed in the second aspect of the present invention;

[0067] Figure 7 This is a flowchart of step S5 of the display screen manufacturing method disclosed in the second aspect of the present invention;

[0068] Figure 8 This is a schematic diagram of the structure of an electronic device disclosed in the third aspect of the present invention. Detailed Implementation

[0069] To better understand the above-mentioned objectives, features, and advantages of the present invention, the solutions of the present invention will be further described below. It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other.

[0070] Many specific details are set forth in the following description in order to provide a full understanding of the invention, but the invention may also be practiced in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of the invention, and not all embodiments.

[0071] The terms "first" and "second," etc., used in the specification and claims of this invention are used to distinguish different objects, not to describe a specific order of objects. For example, "first camera" and "second camera" are used to distinguish different cameras, not to describe a specific order of cameras.

[0072] In the embodiments of the present invention, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner. Furthermore, in the description of the embodiments of the present invention, unless otherwise stated, "a plurality of" means two or more.

[0073] The display screen 1 provided in this application can be applied to electronic devices. By providing a light-transmitting layer 13 on the side of the color block layer 12 facing the light-emitting layer 11, and forming a semi-transparent and semi-reflective surface 130 on the side of the light-transmitting layer 13 connected to the color block layer 12, light emitted from the corresponding sub-pixel unit 110 can pass through the semi-transparent and semi-reflective surface 130 corresponding to a sub-color block 1201, while light emitted from other non-corresponding sub-pixel units 110 is reflected. This prevents the corresponding sub-color block 1201 from receiving light from non-corresponding sub-pixel units 110, thereby alleviating the light crosstalk problem between sub-color blocks 1201 and improving the display effect of the display screen 1. The electronic device may include, but is not limited to, various personal computers, laptops, smartphones, tablets, portable wearable devices, vehicle display screens 1, and other devices with display functions. When the display screen 1 is applied to the above-mentioned electronic devices, the display screen 1 can be used as at least one screen included in the above-mentioned electronic devices.

[0074] Figure 1 This is a schematic diagram of the structure of the display screen disclosed in the first aspect of the present invention. Figure 2 for Figure 1 Enlarged view at point M in the middle. Figure 3 for Figure 2 Please refer to the exploded diagram of the structure in the image. Figures 1 to 3 The display screen 1 provided in this embodiment includes:

[0075] Drive backplane 10, which carries drive circuitry (not shown in the figure);

[0076] The light-emitting layer 11 is disposed on one side of the driving backplate 10. The light-emitting layer 11 includes a plurality of sub-pixel units 110 arranged in an array. Each sub-pixel unit 110 is electrically coupled to the driving circuit. Each sub-pixel unit 110 is configured to emit light under the drive of the driving circuit.

[0077] A color block layer 12 is located on the light-emitting side of the light-emitting layer 11. The color block layer 12 includes multiple arrayed color block units 120, each color block unit 120 including multiple sub-color blocks 1201. Each sub-color block 1201 corresponds to a sub-pixel unit 110. Each sub-color block 1201 is configured to receive light emitted from the corresponding sub-pixel unit 110 and emit light of a predetermined wavelength.

[0078] A light-transmitting layer 13 is formed on the side of the color block layer 12 facing the light-emitting layer 11. The side of the light-transmitting layer 13 connected to the color block layer 12 is formed as a semi-transparent and semi-reflective surface 130. The semi-transparent and semi-reflective surface 130 is configured to receive light emitted from the sub-pixel unit 110, transmit light emitted from the sub-pixel unit 110 to the corresponding sub-color block 1201, and reflect light emitted from the sub-pixel unit 110 to sub-color blocks 1201 other than the corresponding sub-color block 1201.

[0079] As an optional embodiment of the present invention, the semi-transparent and semi-reflective surface 130 is configured to receive light emitted from the sub-pixel unit 110, transmit light with an incident angle less than the included angle θ, and reflect light with an incident angle greater than or equal to the included angle θ. The included angle θ is configured as the angle formed between the direction from the sub-pixel unit 110 to another sub-color block 1201 adjacent to the corresponding sub-color block 1201 and the normal of the semi-transparent and semi-reflective surface 130. It is understood that since the included angle θ can be any position of the sub-pixel unit 110 pointing to any position of another sub-color block 1201 adjacent to the corresponding sub-color block 1201 and the normal of the semi-transparent and semi-reflective surface 130, the value of the included angle θ is not unique. Figure 2 As shown, Figure 2 The example shows the values ​​of the included angle θ for two different angles.

[0080] The angle θ is taken as Figure 2 Taking the smaller included angle θ as an example, as shown... Figure 2 As shown, Figure 2 The thick dashed lines and arrows in the diagram exemplify two different optical paths. One optical path involves light incident from sub-pixel unit 110 onto the semi-transparent and semi-reflective surface 130 at an angle of incidence of... The light rays at this angle of incidence The angle is less than θ, and the light passes through the semi-transparent and semi-reflective surface 130 and is directed towards the corresponding sub-color block 1201. Another light path is from the sub-pixel unit 110 to the semi-transparent and semi-reflective surface 130 with an incident angle of less than θ. The light rays at this angle of incidence The angle is greater than θ, and the light is reflected by the semi-transparent and semi-reflective surface 130, so it cannot reach the non-corresponding sub-color block 1201.

[0081] As an optional embodiment of the present invention, the light-transmitting layer 13 has a refractive index n1, and the color block layer 12 connected to one side of the light-transmitting layer 13 has a refractive index n2. The refractive indices n1 and n2 can satisfy: n1 > n2. Thus, when light travels from a high-refractive-index propagation medium to a low-refractive-index propagation medium, total internal reflection occurs when the incident angle of the light is large. This makes the connection surface between the light-transmitting layer 13 and the color block layer 12 a semi-transparent and semi-reflective surface 130. In other words, without the need for additional optical structures, the connection between the light-transmitting layer 13 and the color block layer 12 can be formed such that light can pass through at a first preset angle. The light is reflected at a second preset angle. The light is semi-transparent and semi-reflective on the 130-degree side.

[0082] In other embodiments, the semi-transparent and semi-reflective surface 130 may also be formed by covering the side of the light-transmitting layer 13 facing the light-emitting layer 11 with a semi-transparent and semi-reflective film, or by providing an optical microstructure capable of achieving the semi-transparent and semi-reflective function.

[0083] As an optional embodiment of the present invention, in order to enable the semi-transparent and semi-reflective surface 130 to have an incident angle of the second preset angle... The light rays are reflected as much as possible, or even all of them, and transmitted through an incident angle of a first preset angle. To achieve better anti-cross-beams light, the included angle θ can be made to be the critical angle for total internal reflection of 130° for a semi-transparent, semi-reflective surface. The critical angle for total internal reflection can be understood as the angle of incidence when the angle of refraction is 90°. Therefore, according to the formula for calculating refractive index, the refractive indices n1 and n2 must satisfy the following: the value of n2 divided by sinθ is less than n1. That is, the refractive indices n1 and n2 must satisfy the following:

[0084] As an optional implementation of the present invention, considering that in actual situations, sinθ can be approximately 0.4≤sinθ≤1, in other words, θ can be approximately 23°≤θ≤90°. Taking the refractive index n1 satisfying 1≤n1≤1.5 as an example, the refractive index n2 can approximately satisfy 1.5≤n2≤2.5. For example, the refractive index n1 can be 1, 1.1, 1.2, 1.3, 1.4 or 1.5, etc., and the refractive index n2 can be 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4 or 2.5, etc.

[0085] As an optional embodiment of the present invention, along the direction from the light-emitting layer 11 to the color block layer 12, the distance from the side surface of each sub-pixel unit 110 facing away from the color block layer 12 to each sub-pixel unit 110 is h. Along the direction parallel to the semi-transparent and semi-reflective surface 130, for any sub-color block 1201, the distance between the sub-pixel unit 110 corresponding to the sub-color block 1201 and other adjacent sub-color blocks 1201 is a. Considering that each sub-pixel unit 110 is formed as a three-dimensional structure, and each outer surface of each sub-pixel unit 110 can emit light, in order to further improve the effect of preventing cross-lighting, the minimum incident angle of the light beam emitted by the sub-pixel unit 110 that is incident on the sub-color block 1201 adjacent to the corresponding sub-color block 1201 can be an included angle θ, that is, the included angle θ can satisfy:

[0086] It can be seen that the emissivity n1 and n2 can satisfy: This improves the effect of preventing light leakage, resulting in better display performance for display screen 1.

[0087] As an optional embodiment of the present invention, the material of the light-transmitting layer 13 may include at least one of Al2O3 and TiO2, so that the light-transmitting layer 13 has a high refractive index.

[0088] like Figure 3 As shown, as an optional embodiment of the present invention, the side of the light-transmitting layer 13 facing away from the color block layer 12 may also be covered with an encapsulation layer 131, thereby protecting the light-transmitting layer 13 and the color block layer 12 through the encapsulation layer 131 to block water and oxygen, and to prevent the light-transmitting layer 13 and the color block layer 12 from being damaged during transportation.

[0089] As an optional embodiment of the present invention, the color block layer 12 may further include a planarization layer 122, which may include a transparent organic material. The planarization layer 122 is disposed on the side of the plurality of arrayed color block units 120 facing the light-transmitting layer 13. The side of the planarization layer 122 facing away from the color block units 120 is connected to the light-transmitting layer 13. The connection surface between the planarization layer 122 and the light-transmitting layer 13 is formed as a semi-transparent and semi-reflective surface 130. In other words, the planarization layer 122 is formed as the side of the color block layer 12 connected to the light-transmitting layer 13. Therefore, the planarization layer 122 has the refractive index n2 mentioned above. The planarization layer 122 is used, on the one hand, to make the color blocks The surface of layer 12 is flat, so that the semi-transparent and semi-reflective surface 130 is formed into a flat surface. This makes the direction of light transmission or total reflection at the same angle more uniform at different positions of the semi-transparent and semi-reflective surface 130, thereby improving the effectiveness and controllability of the overall anti-light crosstalk function of the semi-transparent and semi-reflective surface 130. On the other hand, it makes the refractive index of the side of the color block layer 12 connected to the light-transmitting layer 13 more uniform, which can avoid the problem that the critical angle of total reflection of light at different places of the semi-transparent and semi-reflective surface 130 is different due to the different refractive indices of each sub-color block 1201. This further improves the effectiveness and controllability of the overall anti-light crosstalk function of the semi-transparent and semi-reflective surface 130.

[0090] As an optional embodiment of the present invention, the color block layer 12 may include a second light-shielding structure 121 and color block units 120 arrayed on the second light-shielding structure 121. The second light-shielding structure 121 may include a dark-colored light-shielding material, such as black or dark gray. The outer periphery of each sub-color block 1201 is provided with a second light-shielding structure 121, and the second light-shielding structures 121 on the outer periphery of two adjacent sub-color blocks 1201 are connected. This allows the second light-shielding structure 121 to block and absorb the light between two adjacent sub-color blocks 1201, thereby reducing the phenomenon of light crosstalk interference between two adjacent sub-color blocks 1201 and further improving the display effect of the display screen 1.

[0091] As an optional embodiment of the present invention, any two adjacent sub-pixel units 110 and each sub-pixel unit 110 and the driving backplate 10 can be fixedly connected by filler adhesive 111. This allows each sub-pixel unit 110 to be fixed to the driving backplate 10 by filler adhesive 111, while stabilizing the relative position between any two adjacent sub-pixel units 110. This makes the connection between the light-emitting layer 11 and the driving backplate 10 stable and the overall structure of the light-emitting layer 11 stable.

[0092] It is understood that the display screen 1 in the embodiments of the present invention may include, but is not limited to, quantum dot display screens and organic light-emitting display screens.

[0093] Taking a quantum dot display screen 1 as an example, as an optional implementation of this invention, the sub-pixel unit 110 can be configured to emit blue light under the action of current, such as a blue light-emitting diode. Each color block unit 120 can include at least a first sub-color block 120a, a second sub-color block 120b, and a third sub-color block 120c. The first sub-color block 120a and the second sub-color block 120b include photoluminescent materials, and the third sub-color block 120c is a light-transmitting color block. The first sub-color block 120a is configured to receive light from the corresponding sub-pixel unit 110. The first sub-pixel unit 10 emits blue light, and under the excitation of the blue light emitted by the sub-pixel unit 110, it emits green light. The second sub-color block 120b is configured to receive the blue light emitted by the corresponding sub-pixel unit 110 and emit red light under the excitation of the blue light emitted by the sub-pixel unit 110. The third sub-color block 120c is configured to receive the blue light emitted by the corresponding sub-pixel unit 110 and emit it. Thus, the brightness of the light emission is adjusted by each sub-pixel unit 110, and the color of the display light is adjusted by each sub-color block 120, so as to realize the function of displaying a color picture on the display screen 1.

[0094] It is understood that, at this time, the predetermined wavelength corresponding to the first sub-color block 120a is the wavelength of light that is approximately green in colorimetry, the predetermined wavelength corresponding to the second sub-color block 120b is the wavelength of light that is approximately red in colorimetry, and the predetermined wavelength corresponding to the third sub-color block 120c is the wavelength of light that is approximately blue in colorimetry. In other embodiments, the predetermined wavelength corresponding to the sub-color block 1201 can also be any other arbitrary wavelength; this embodiment does not impose specific limitations.

[0095] As an optional embodiment of the present invention, the photoluminescent material may include, but is not limited to, quantum dot materials or fluorescent materials that can emit green or red light when excited by blue light.

[0096] As an optional embodiment of the present invention, the display screen 1 may further include a stray light filtering layer 14. The stray light filtering layer 14 is disposed on the side of the color block layer 12 away from the light-emitting layer 11. The stray light filtering layer 14 may include a first light-shielding structure 141 and a plurality of filtering units 140 arrayed on the first light-shielding structure 141. Each filtering unit 140 includes a plurality of sub-filter blocks 140a. The outer periphery of each sub-filter block 140a is connected to the first light-shielding structure 141. Each sub-filter block 140a is disposed corresponding to each sub-color block 1201. The sub-filter block 140a is configured to allow light of a predetermined wavelength corresponding to the corresponding sub-color block 1201 to pass through and to block the predetermined wavelength. Other light sources are filtered out. For example, the sub-filter block 140a corresponding to the first sub-color block 120a is used to transmit green light and block light of other wavelengths except the green light band. The sub-filter block 140a corresponding to the second sub-color block 120b is used to transmit red light and block light of other wavelengths except the red light band. The sub-filter block 140a corresponding to the third sub-color block 120c is used to transmit blue light and block light of other wavelengths except the blue light band. Thus, the stray light filtering layer 14 filters out the blue light that does not excite the quantum dot material to emit light from the light emitted from the first sub-color block 120a and the second sub-color block 120b, so as to prevent the overall display screen of the display screen 1 from being bluish. The first light-shielding structure 141 may include a dark-colored light-shielding material, such as black or dark gray, so that it can block and absorb the light between two adjacent sub-filter blocks 140a, thereby reducing the phenomenon of light crosstalk interference between two adjacent sub-filter blocks 140a and further improving the display effect of the display screen 1.

[0097] As an optional embodiment of the present invention, the light-emitting layer 11 and the light-transmitting layer 13 may be spaced apart to avoid collision between the light-emitting layer 11 and the light-transmitting layer 13, which could cause damage.

[0098] like Figure 1 As shown, as an optional embodiment of the present invention, the display screen 1 may further include a frame adhesive 16. The frame adhesive 16 is disposed along the edge of the light-emitting layer 11 and connected between the edge of the light-emitting layer 11 and the color block layer 12. On the one hand, the frame adhesive 16 forms a stable gap between the light-emitting layer 11 and the color block layer 12. On the other hand, the frame adhesive 16 seals the edge of the display screen 1, thereby including the color block layer 12 and the light-emitting layer 11, preventing water and oxygen from entering the interior of the display screen 1 and causing the photoluminescent material and the sub-pixel unit 110 to quench light emission.

[0099] As an optional embodiment of the present invention, the frame adhesive 16 can be formed by curing a shadowless adhesive filled with elastic support particles. Thus, the frame adhesive 16 can support and protect the light-emitting layer 11, the light-transmitting layer 13 and the color block layer 12, while also bonding the light-emitting layer 11 and the light-transmitting layer 13 together, so as to make the overall structure of the display screen 1 stable.

[0100] As an optional embodiment of the present invention, the display screen 1 may further include an encapsulation substrate 15. The encapsulation substrate 15 is disposed on the side of the color block layer 12 away from the light-emitting layer 11, and the edge of the encapsulation substrate 15 is located on the outer periphery of the color block layer 12. A frame adhesive 16 is connected between the edge of the encapsulation substrate 15 and the edge of the light-emitting layer 11. Thus, on the one hand, the encapsulation substrate 15 can protect the color block layer 12, so that the shape and structure of the color block layer 12 remain stable. On the other hand, the edge of the encapsulation substrate 15 is connected to the frame adhesive 16, so that the outer periphery of the color block layer 12 is surrounded by the frame adhesive 16, thereby encapsulating the color block layer 12 entirely inside the display screen 1, thus providing better protection for the color block layer 12. It can be understood that when a stray light filter layer 14 is provided on the side of the color block layer 12 away from the light-emitting layer 11, the encapsulation substrate 15 may be disposed on the side of the stray light filter layer 14 away from the light-emitting layer 11, so as to support and protect the stray light filter layer 14 and the color block layer 12 through the encapsulation substrate 15.

[0101] As an optional embodiment of the present invention, a transparent filler 17 may be filled between the light-emitting layer 11 and the color block layer 12 to further prevent water and oxygen from contacting the color block layer 12 and the light-emitting layer 11, thereby further encapsulating and protecting the color block layer 12 and the light-emitting layer 11. For ease of viewing, Figure 2 The transparent filler 17 is omitted.

[0102] The display screen 1 provided in this embodiment prevents light crosstalk between sub-color blocks 1201 by setting a light-transmitting layer 13 to form a semi-transparent and semi-reflective surface 130, thereby alleviating the color shift problem of the display screen 1 and improving the display effect of the display screen 1.

[0103] Furthermore, by setting a flattening layer 122 on the side of the multiple arrayed color block units 120 facing the light-transmitting layer 13, the refractive index of the side of the color block layer 12 connected to the light-transmitting layer 13 is highly consistent, and the surface flatness of this side is high. As a result, the shape and performance of the semi-transparent and semi-reflective surface 130 vary less at different positions, making the transmission or total reflection direction of the semi-transparent and semi-reflective surface 130 at different positions more uniform. The overall anti-crosslight function of the semi-transparent and semi-reflective surface 130 is more effective and controllable.

[0104] Based on the same inventive concept, in order to prepare the above-mentioned display screen 1, this embodiment of the invention also provides a method for preparing the display screen 1. This method corresponds to the aforementioned display screen 1 embodiment. For ease of reading, this method embodiment will not repeat the details of the aforementioned display screen 1 embodiment one by one. However, it should be clear that the preparation method in this embodiment can correspondingly realize all the contents of the aforementioned display screen 1 embodiment.

[0105] Figure 4 This is a schematic diagram of the structure of the display screen disclosed in the second aspect of the present invention. Figure 4 This is a flowchart of the steps in the method for manufacturing a display screen disclosed in the second aspect of the present invention, with reference to... Figure 4 As shown, the method for manufacturing the display screen 1 provided in this embodiment includes:

[0106] S1. Provide a drive backplane, which carries the drive circuit.

[0107] S2. Provide multiple sub-pixel units and arrange the multiple sub-pixel units in an array on one side of the driving backplate. Each sub-pixel unit is electrically coupled to the driving circuit. Each sub-pixel unit is configured to emit light in the driving circuit to form an emitting layer on one side of the driving backplate.

[0108] Please combine Figure 3 As shown, in an optional implementation of this invention, step S2 may include:

[0109] S20. Provide multiple sub-pixel units and arrange the multiple sub-pixel units in an array on one side of the driving backplate. Each sub-pixel unit is electrically coupled to the driving circuit, and each sub-pixel unit is configured to emit light under the driving of the driving circuit.

[0110] S21. Filler adhesive is provided between any two adjacent sub-pixel units and between each sub-pixel unit and the driving backplate.

[0111] S22. Curing filler adhesive to form a light-emitting layer on one side of the drive backplate.

[0112] S3. Provide a color block layer, which includes multiple arrayed color block units. Each color block unit includes multiple sub-color blocks. Each sub-color block is configured to receive light emitted from the corresponding sub-pixel unit and emit light of a predetermined wavelength.

[0113] As described above, the color block layer 12 may include a second light-shielding structure 121 and a plurality of color block units 120 arrayed on the second light-shielding structure 121. In one or more embodiments, step S3 may include:

[0114] S30, provides light-shielding materials.

[0115] S31. Multiple hollow units are arranged in an array on the light-shielding material by using a yellow light process. Each hollow unit includes a first hollow hole, a second hollow hole, and a third hollow hole arranged at intervals, to obtain a second light-shielding structure.

[0116] S32. Fill the first and second hollow holes with photoluminescent material to form the first and second sub-color blocks, and fill the third hollow hole with light-transmitting material to form the third sub-color block, thus obtaining a colored block layer.

[0117] The color emitted by the photoluminescent material filling the first hollow hole is different from the color emitted by the photoluminescent material filling the second hollow hole.

[0118] Please combine Figure 5 As shown, where, Figure 5 (c) shows that the second light-shielding structure 121 has a hollow unit 1210, which includes a first hollow hole 1210a, a second hollow hole 1210b and a third hollow hole 1210c.

[0119] Taking a photoluminescent material including quantum dot materials as an example, in one or more of these embodiments, step S32 may include:

[0120] S320. Green quantum dot material is filled into each of the first hollow holes through at least one of the following processes: photolithography, vapor deposition, and inkjet printing, to form the first sub-color block.

[0121] S321. Red quantum dot material is filled into each of the second hollow holes through at least one of the following processes: photolithography, vapor deposition, and inkjet printing, to form the second sub-color block.

[0122] S322. The light-transmitting material is filled into each of the third hollow holes through at least one of the following processes: photoluminescence process, vapor deposition process, and inkjet printing process, to form the third sub-color block.

[0123] It should be understood that the above steps S320, S321 and S322 are for forming the first sub-color block 120a, the second sub-color block 120b and the third sub-color block 120c respectively. In other words, steps S320, S321 and S322 are independent process steps. Therefore, steps S320, S321 and S322 are not necessarily performed in the order described above, but can be performed in any order, or can be performed simultaneously and separately.

[0124] As described above, the display screen 1 may also include a stray light filtering layer 14. In one or more embodiments, the method may further include:

[0125] S3a, Provide light-shielding materials.

[0126] S3b. Multiple through holes are formed in an array on the light-shielding material using a photoluminescence process to obtain the first light-shielding structure.

[0127] S3c. Fill multiple through holes with filter material to form multiple sub-filter blocks and obtain stray light filter layer.

[0128] S3d, A color block layer is formed on one side of the stray light filter layer, and each sub-color block of the color block layer is set to correspond to each sub-filter block. Each sub-filter block is configured to allow light of a predetermined wavelength corresponding to each sub-color block to pass through.

[0129] Please refer to the following: Figure 5 and Figure 6 As described above, the display screen 1 may further include an encapsulation substrate 15. In one or more embodiments, the method may further include:

[0130] S3e provides a packaging substrate.

[0131] S3f, The colored block layer is formed on one side of the packaging substrate.

[0132] As an optional embodiment of the present invention, when the display screen 1 also includes an encapsulation substrate 15 and the stray light filtering layer 14, step S3f may include:

[0133] S30f: A light-shielding material is applied to one side of the packaging substrate.

[0134] S31f: Multiple through holes are formed in an array on the light-shielding material using a photoluminescence process to obtain the first light-shielding structure.

[0135] S32f: Fill multiple through holes with filter material to form multiple sub-filter blocks, thus obtaining a stray light filter layer.

[0136] S33f, A color block layer is formed on one side of the stray light filter layer, and each sub-color block of the color block layer is set to correspond to each sub-filter block, and each sub-filter block is configured to allow light of a predetermined wavelength corresponding to the corresponding sub-color block to pass through.

[0137] Among them, such as Figure 5 As shown, Figure 5 Image (a) shows a first light-shielding structure 141 with an array of through holes 141a. Figure 5 (b) shows that multiple through holes 141a are filled with filter material to form multiple sub-filter blocks 140, resulting in stray light filter layer 14.

[0138] Specifically, step S33f, "forming the colored patch layer 12," includes steps S30, S31, and S32. In other words, as an optional implementation of this invention, step S33d may include:

[0139] S330f: A light-shielding material is applied to the side of the stray light filter layer that is away from the packaging substrate.

[0140] S331f: Multiple hollow units arranged in an array are formed on a light-shielding material using a photoluminescence process. Each hollow unit includes a first hollow hole, a second hollow hole, and a third hollow hole arranged at intervals, thus obtaining a second light-shielding structure.

[0141] Among them, such as Figure 5 As shown, Figure 5 (c) shows that the second light-shielding structure 121 is provided with a cutout unit 1210.

[0142] S332f: Photoluminescent material is filled into the first and second hollow holes to form the first and second sub-color blocks, and light-transmitting material is filled into the third hollow hole to form the third sub-color block, thus obtaining a colored block layer.

[0143] Among them, such as Figure 5 As shown, Figure 5 (d) shows that the first hollow hole 1210a, the second hollow hole 1210b and the third hollow hole 1210c are filled with corresponding photoluminescent materials or light-transmitting materials to form the first sub-color block 120a, the second sub-color block 120b or the third sub-color block 120c.

[0144] Please combine again Figure 3 As shown above, the color patch layer 12 may further include a planarization layer 122. In one or more embodiments, the method may further include:

[0145] S33. A light-transmitting organic material is coated on the side of the second light-shielding structure and the multiple color block units facing away from the packaging substrate.

[0146] S34. Curing the light-transmitting organic material to form a flat layer, resulting in a colored patch layer.

[0147] In this process, a light-transmitting organic material can be coated onto the surface of multiple color block units 120 through a spin coating process, so that the light-transmitting organic material can be tightly coated onto the surface of each color block unit 120 and the second light-shielding structure 121, and fill the gap between each color block unit 120 and the second light-shielding structure 121, so that the surface of the flat layer 122 is formed into a flat surface.

[0148] S4. A light-transmitting layer is applied to one side of the colored block layer so that the side of the light-transmitting layer connected to the colored block layer is semi-transparent and semi-reflective.

[0149] A high-refractive-index light-transmitting material can be coated onto one side of the colored block layer 12 using spin coating, vapor deposition, or other film forming processes to form a light-transmitting layer 13. This eliminates the need for an additional connecting structure between the light-transmitting layer 13 and the colored block layer 12, thus avoiding any impact on the translucent / reflective properties of the semi-transparent / reflective surface 130 between the light-transmitting layer 13 and the colored block layer 12.

[0150] As described above, the display screen 1 may further include an encapsulation layer 131. In one or more embodiments, the method may further include:

[0151] S40. An encapsulation layer is applied to the side of the light-transmitting layer opposite to the colored block layer.

[0152] The encapsulation material can be deposited on the side of the light-transmitting layer 13 opposite to the color block layer 12 by atomic force deposition to form the encapsulation layer 131.

[0153] It should be understood that steps S1 and S2 are for forming a light-emitting layer 11 and a driving backplate 10 that are connected and formed as a whole, and steps S3 and S4 are for forming a color block layer 12 and a light-transmitting layer 13 that are connected and formed as a whole. In other words, steps S1 and S2, and steps S3 and S4 are independent process steps for two different parts of the display screen 1. Therefore, steps S1 and S2, and steps S3 and S4 are not necessarily performed in the order described above, but can be performed in any order, or can be performed simultaneously and separately.

[0154] S5. Connect the light-emitting layer with the color block layer to obtain the display screen.

[0155] Please refer to the following: Figure 3 , Figure 4 and Figure 7 As described above, the display screen 1 may also include frame adhesive 16 and transparent filler adhesive 17. In one or more embodiments, step S5 may further include:

[0156] S50. Set frame adhesive along the edge of the light-emitting layer or along the edge of the colored block layer.

[0157] S51. Fill the space enclosed by the frame adhesive with transparent filler adhesive.

[0158] S52. Connect the light-emitting layer and the colored block layer with frame adhesive and transparent filler adhesive.

[0159] S53, cured frame adhesive, and transparent filler adhesive are used to obtain the display screen.

[0160] Figure 8This is a schematic diagram of the structure of the electronic device disclosed in the third aspect of the present invention, as shown below. Figure 8 As shown, based on the same inventive concept, this embodiment of the invention also provides an electronic device 2 including the aforementioned display screen 1. The electronic device 2 may include, but is not limited to, various personal computers, laptops, smartphones, tablets, portable wearable devices, vehicle displays, and other devices with display functions. The aforementioned display screen 1 can be used as at least one screen included in the electronic device 2. Figure 8 Taking a smartphone as an example, the structure of an electronic device 2 is shown. Because the display screen 1 has a smaller color depth, the display effect is better; therefore, the display effect of the electronic device 2 is also better.

[0161] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0162] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0163] Industrial applicability

[0164] The display screen provided by this invention can effectively alleviate the problem of light crosstalk between different sub-color blocks, reduce the color deviation of the display screen, improve the display effect, and has strong industrial applicability.

Claims

1. A display screen, characterized in that, include: A drive backplane, wherein the drive backplane carries a drive circuit; A light-emitting layer is disposed on one side of the driving backplate. The light-emitting layer includes a plurality of sub-pixel units arranged in an array. Each sub-pixel unit is electrically connected to the driving circuit, and each sub-pixel unit is configured to emit light under the drive of the driving circuit. A color block layer is located on the light-emitting side of the light-emitting layer. The color block layer includes multiple arrayed color block units, each color block unit includes multiple sub-color blocks, each sub-color block corresponds to each sub-pixel unit, and each sub-color block is configured to receive light emitted from the corresponding sub-pixel unit and emit light of a predetermined wavelength. as well as A light-transmitting layer is formed on the side of the color block layer facing the light-emitting layer. The surface of the light-transmitting layer connected to the color block layer is formed as a semi-transparent and semi-reflective surface. The semi-transparent and semi-reflective surface is configured to receive light emitted from the sub-pixel unit, transmit light incident from the sub-pixel unit to the corresponding sub-color block, and reflect light incident from the sub-pixel unit to the sub-color block outside the corresponding sub-color block. The semi-transparent and semi-reflective surface is configured to receive light emitted from the sub-pixel unit, transmit light with an incident angle less than the included angle θ, and reflect light with an incident angle greater than or equal to the included angle θ. The included angle θ is configured as: the angle formed between the direction from the sub-pixel unit to another sub-color block adjacent to the corresponding sub-color block and the normal of the semi-transparent and semi-reflective surface; The refractive index of the light-transmitting layer is n1, and the refractive index of the colored block layer connected to the side of the light-transmitting layer is n2, wherein the value of n2 divided by sinθ is less than n1.

2. The display screen according to claim 1, characterized in that, Along the direction from the light-emitting layer to the color block layer, the distance from the side surface of each sub-pixel unit facing away from the color block layer to each sub-pixel unit is h. Along the direction parallel to the semi-transparent and semi-reflective surface, for any sub-color block, the distance between the sub-pixel unit corresponding to the sub-color block and other adjacent sub-color blocks is a.

3. The display screen according to claim 1, characterized in that, The material of the light-transmitting layer includes at least one of Al₂O₃ and TiO₂.

4. The display screen according to claim 1, characterized in that, The sub-pixel unit is configured to emit blue light under the action of an electric current; Each of the color block units includes at least a first sub-color block, a second sub-color block, and a third sub-color block. The first sub-color block and the second sub-color block include photoluminescent materials, and the third sub-color block is a light-transmitting color block. The first sub-color block is configured to receive blue light emitted from the corresponding sub-pixel unit and emit green light when excited by the blue light emitted by the sub-pixel unit. The second sub-color block is configured to receive blue light emitted from the corresponding sub-pixel unit and emit red light when excited by the blue light emitted by the sub-pixel unit. The third sub-color block is configured to receive blue light emitted from the corresponding sub-pixel unit and transmit it.

5. The display screen according to claim 4, characterized in that, The photoluminescent material includes at least quantum dot materials or fluorescent materials.

6. The display screen according to claim 1, characterized in that, The display screen further includes a stray light filtering layer, which is disposed on the side of the color block layer opposite to the light-emitting layer. The stray light filtering layer includes a first light-shielding structure and a plurality of filtering units arranged in an array on the first light-shielding structure. Each filtering unit includes a plurality of sub-filter blocks. The outer periphery of each sub-filter block is connected to the first light-shielding structure. Each sub-filter block is disposed corresponding to each sub-color block. The sub-filter block is configured to allow light of the predetermined wavelength band corresponding to the corresponding sub-color block to pass through, and to block light outside the predetermined wavelength band.

7. The display screen according to any one of claims 1-6, characterized in that, The color block layer also includes a flattening layer, which is disposed on the side of the color block unit facing the light-transmitting layer. The side of the flattening layer away from the color block unit is connected to the light-transmitting layer, and the surface of the light-transmitting layer connected to the flattening layer is formed as the semi-transparent and semi-reflective surface.

8. The display screen according to any one of claims 1-6, characterized in that, The light-emitting layer and the light-transmitting layer are spaced apart.

9. The display screen according to claim 8, characterized in that, The display screen also includes a frame adhesive, which is disposed along the edge of the light-emitting layer and connected between the edge of the light-emitting layer and the color block layer.

10. The display screen according to claim 9, characterized in that, The display screen also includes an encapsulation substrate, which is disposed on the side of the color block layer away from the light-emitting layer, and the edge of the encapsulation substrate is located on the outer periphery of the color block layer. The frame adhesive is connected between the edge of the encapsulation substrate and the edge of the light-emitting layer.

11. The display screen according to claim 9, characterized in that, A transparent filler adhesive is used to fill the space between the light-emitting layer and the colored block layer, and the frame adhesive is located around the transparent filler adhesive.

12. The method for manufacturing a display screen according to claim 1, characterized in that, include: A drive backplane is provided, wherein the drive backplane carries the drive circuitry; A plurality of sub-pixel units are provided, and the plurality of sub-pixel units are arranged in an array on one side of the driving backplate, such that each sub-pixel unit is electrically coupled to the driving circuit to form a light-emitting layer on one side of the driving backplate. A color block layer is provided, the color block layer comprising a plurality of color block units arranged in an array, each color block unit comprising a plurality of sub-color blocks, each sub-color block being configured to receive light emitted from the corresponding sub-pixel unit and to emit light of a predetermined wavelength. A light-transmitting layer is formed on one side of the color block layer, such that the surface of the light-transmitting layer connected to the color block layer is formed as a semi-transparent and semi-reflective surface. The display screen is obtained by connecting the light-emitting layer and the color block layer.

13. The method for manufacturing a display screen according to claim 12, characterized in that, Each of the color block units includes at least a first sub-color block, a second sub-color block, and a third sub-color block. The first sub-color block and the second sub-color block include photoluminescent materials, and the third sub-color block is a light-transmitting color block. The provision of the color patch layer includes: Provide light-blocking materials; Multiple hollow units are formed in an array on the light-shielding material, and each hollow unit includes a first hollow hole, a second hollow hole and a third hollow hole arranged at intervals. Photoluminescent material is filled into the first and second hollow holes to form the first and second sub-color blocks, and light-transmitting material is filled into the third hollow hole to form the third sub-color block, thus obtaining the color block layer; The color emitted by the photoluminescent material filling the first hollow hole is different from the color emitted by the photoluminescent material filling the second hollow hole.

14. The method for manufacturing a display screen according to claim 13, characterized in that, The photoluminescent material includes quantum dot materials; The process of filling the first and second hollow holes with the photoluminescent material to form the first and second sub-color blocks, and filling the third hollow hole with the translucent material to form the third sub-color block, to obtain the colored block layer, includes: Green quantum dot material is filled into each of the first hollow holes using at least one of photolithography, vapor deposition, and inkjet printing processes to form the first sub-color block. Red quantum dot material is filled into each of the second hollow holes using at least one of photolithography, vapor deposition, and inkjet printing processes to form the second sub-color block; The light-transmitting material is filled into each of the third hollow holes using at least one of the following processes: photolithography, vapor deposition, and inkjet printing, to form the third sub-color block.

15. The method for manufacturing a display screen according to claim 12, characterized in that, The display screen further includes a stray light filtering layer, which includes a first light-shielding structure and a plurality of filtering units arranged in an array on the first light-shielding structure. Each filtering unit includes a plurality of sub-filter blocks, and the outer periphery of each sub-filter block is connected to the first light-shielding structure. Each of the sub-filter blocks is respectively set to correspond to each of the sub-color blocks in the color block layer, and each of the sub-filter blocks is configured to allow light of the predetermined wavelength band corresponding to the corresponding sub-color block to pass through.

16. The preparation method according to claim 15, characterized in that, The stray light filtering layer includes multiple filter units arranged in an array, and each filter unit includes multiple sub-filter blocks, including... Provide light-blocking materials; Multiple through holes are formed in an array on the light-shielding material to form a first light-shielding structure; The multiple through holes are filled with filter material to form multiple sub-filter blocks.

17. The method for manufacturing a display screen according to any one of claims 12-16, characterized in that, The step of connecting the light-emitting layer and the color block layer to obtain the display screen includes: A frame adhesive is provided along the edge of the light-emitting layer or along the edge of the colored block layer; A transparent filler adhesive is filled into the space enclosed by the frame adhesive. The light-emitting layer and the colored block layer are connected by the frame adhesive and the transparent filler adhesive; The frame adhesive and the transparent filler adhesive are cured to obtain the display screen.

18. An electronic device, characterized in that, include: The display screen as described in any one of claims 1-11.

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