Display screen and electronic equipment

Abstract

The invention provides a display screen and electronic equipment, the display screen comprises a cover plate, a light source assembly and at least one light processing structure, the cover plate is provided with a first side and a second side which are opposite to each other, the cover plate can transmit light, and an anti-dazzle structure is formed on the second side; the light source assembly is arranged on the first side of the cover plate and used for emitting first light to the direction of the cover plate. The light processing structure is arranged between the light source assembly and the anti-dazzle structure and used for changing the propagation direction of part of the first light. According to the display screen, the light intensity of the first light used for displaying the picture is reduced by arranging the light processing structure, so that the intensity of the formed flash point is reduced, the flash point can be visually shown to be not obvious, optimization of the flash point is achieved, eye fatigue is reduced, and user experience is improved.

Description

Technical Field

[0001] This application relates to the field of display screens, and particularly to a display screen and an electronic device. Background Art

[0002] Currently, the cover plate of the display screen in an electronic device usually uses smooth glass. Under strong ambient light, light undergoes specular reflection on the surface of the cover plate and enters the user's eyes, causing glare. This not only greatly reduces the readability of the display content of the electronic device, but also causes harm such as eye fatigue, dry eyes, and vision decline.

[0003] To solve this problem, in related technologies, an AG (Anti-Glare) process is started to be used on the glass forming the cover plate to make an AG cover plate to achieve the anti-glare effect, effectively reducing the specular reflection of the display screen and improving the readability and comfort of the display content of the display screen. However, while the AG cover plate improves the anti-glare effect, it also brings the negative impact of sparkle, which not only affects the user experience, but also causes eye fatigue. Summary of the Invention

[0004] This application provides a display screen and an electronic device, which solve the technical problem that the current display screen has sparkle affecting the user experience and causing eye fatigue.

[0005] To achieve the above object, this application adopts the following technical solutions:

[0006] In a first aspect, a display screen is provided, including a cover plate, a light source component, and at least one light processing structure. The cover plate has a first side and a second side facing away from each other. The cover plate is capable of transmitting light, and an anti-glare structure is formed on the second side; the light source component is disposed on the first side of the cover plate and is used for emitting first light in the direction of the cover plate; the light processing structure is disposed between the light source component and the anti-glare structure and is used for changing the propagation direction of part of the first light.

[0007] After passing through the optical processing structure, the first light can form multiple scattered light beams, and one or more of the multiple scattered light beams are used for displaying an image. Since the emission directions of the scattered light beams are relatively scattered, the mutual interference or overlap of the multiple scattered light beams generated after passing through the anti-glare structure is very few, reducing the situation of light intensity cancellation or enhancement on the imaging surface. At the same time, according to the law of conservation of energy, the light intensity of the first light should be approximately equal to the sum of the light intensities of all the scattered light beams. Therefore, the light intensity of each scattered light beam is much smaller than the light intensity of the first light. The light intensity of a single display light beam formed by each scattered light beam is much smaller than the light intensity of the single display light beam generated without the optical processing structure. And the intensity of the flash point is positively correlated with the light intensity of the single display light beam, that is, the greater the light intensity of the single display light beam, the greater the intensity of the flash point, and the smaller the light intensity of the single display light beam, the smaller the intensity of the flash point. Therefore, the intensity of the flash point generated after the first light is processed by the optical processing structure also decreases, which is visually manifested as the flash point being less obvious, that is, the optimization of the flash point is achieved, thereby improving the user experience and reducing eye fatigue.

[0008] As one of the embodiments, the optical processing structure includes a grating microstructure, and the grating microstructure is used for diffracting the first light. The optical processing structure can use the grating microstructure to diffract a single first light beam into multiple scattered light beams, and the multiple scattered light beams are the diffracted light beams formed by diffracting a single first light beam. The brighter parts closer to the center of the multiple diffracted light beams jointly form an image visible to the human eye. The light intensity of a single diffracted light beam is reduced compared to the light intensity of a single first light beam, thereby reducing the intensity of the flash point generated by a single diffracted light beam.

[0009] As one of the embodiments, the grating microstructure is formed on the first side surface of the cover plate. In this way, the structural strength of the grating microstructure can be greatly improved, avoiding damage to the grating microstructure when the AG cover plate is under greater pressure. At the same time, the distance between the grating microstructure and the light source component is increased compared to setting the grating microstructure in the first optical glue layer, and there is no need to thicken the first optical glue layer additionally, and the display screen can be made thinner and lighter.

[0010] As one of the embodiments, the grating microstructure includes multiple grating units, and the multiple grating units are arranged in a two-dimensional array on the first side surface of the cover plate. The multiple grating units arranged in an array can diffract the first light emitted by the light source component to disperse a single display light beam for display into multiple diffracted light beams, and the multiple diffracted light beams jointly achieve image display. The light intensity of each single diffracted light beam is much smaller than the light intensity of the first light without the grating microstructure, and the distance between adjacent two diffracted light beams is small, which will not affect the display of the image.

[0011] As one of the embodiments, the grating unit includes a first groove formed on the first side surface of the cover plate. Multiple first grooves arranged in an array can achieve a periodic arrangement of the grating microstructure to achieve the diffraction effect, and the setting of the first groove can be processed by traditional methods and is easy to form.

[0012] As one of the embodiments, the first groove is filled with a filling body to improve the structural strength of the display screen. The refractive index of the filling body is different from that of the cover plate to achieve the diffraction effect.

[0013] As one of the embodiments, the grating unit includes a first protrusion protruding from the first side surface of the cover plate. Multiple first protrusions arranged in an array can achieve a periodic arrangement of the grating microstructure to achieve the diffraction effect, and the setting of the first protrusion can be processed by traditional methods and is easy to form.

[0014] As one of the embodiments, the grid-shaped groove formed by multiple first protrusions is filled with a filling body to improve the structural strength of the display screen. The refractive index of the filling body is different from that of the cover plate to achieve the diffraction effect.

[0015] As one of the embodiments, the difference between the refractive index of the filling body and the refractive index of the cover plate is greater than or equal to 0.05 to enhance the diffraction effect. If the difference between the two is too small, the diffraction effect is not obvious.

[0016] As one of the embodiments, the center distance between two adjacent grating units is 5μm - 20μm to optimize the flash point without affecting the clarity of the display picture. If the center distance value between two adjacent grating units is too large, the diffraction efficiency is too low to play the role of optimizing the flash point; if the center distance value between two adjacent grating units is too small, the diffraction angle is too large, and the clarity of the content displayed on the display screen will seriously decrease.

[0017] As one of the embodiments, the width of the grating unit is 0.5μm - 15μm to improve the diffraction efficiency on the basis of easy processing. If the width of the grating unit is too large, the propagation of the first light on each grating unit is more independent, and the scattered light processed between two adjacent grating units interacts with each other, weakening the periodic interference of the grating microstructure; if the width of the grating unit is too small, the manufacturing difficulty increases and the cost performance is low.

[0018] As one of the embodiments, the height of the grating unit is 0.5 μm to 3 μm to improve the diffraction efficiency under the condition of easy processing. As the height of the grating unit increases, the reflection and refraction processes of light in the groove become more complex, which will change the phase distribution of light. Therefore, the diffraction efficiency of the grating microstructure will also increase accordingly, and the diffraction effect will be more obvious. However, if the height of the grating unit is too large, problems such as enhanced higher-order diffraction effects and distorted diffraction patterns are likely to occur. In addition, when processing the grating unit, whether by chemical etching or laser ablation, both the height direction and the width direction increase simultaneously, and the etching speed in the width direction is much greater than that in the height direction. Therefore, when the height of the grating unit increases, the width of the grating unit will be even larger. Therefore, the height of the grating unit needs to be controlled within 3 μm.

[0019] As one of the embodiments, the light source assembly includes a plurality of pixels arranged in a two-dimensional array. The arrangement direction of a single row of grating units is different from the arrangement direction of a single row of pixels and the arrangement direction of a single column of pixels. The arrangement direction of a single column of grating units is different from the arrangement direction of a single row of pixels and the arrangement direction of a single column of pixels. In this way, the periodic arrangement of pixels and the periodic arrangement of grating units can be avoided from being superimposed on each other, thereby eliminating moiré patterns on the display screen.

[0020] As one of the embodiments, the light processing structure includes a scattering microstructure. The scattering microstructure includes a dispersion matrix and a plurality of scattering spheres dispersed in the dispersion matrix. The scattering microstructure can scatter the first light. The display screen can then use this scattering microstructure to scatter the first light to form multiple scattered light beams. The light intensity of a single scattered light beam is reduced compared to the light intensity of the first light, thereby reducing the intensity of the flash points generated by a single first light beam. At the same time, there are no requirements for the installation position of the scattering microstructure, increasing the possible installation positions of the light processing structure and improving the flexibility of the installation of the light processing structure. In addition, the thickness of the scattering microstructure has no specific limitation, which can meet the requirement of making the display screen thinner and lighter. It should be noted that the influence of the scattering of the first light by the scattering microstructure on the clarity of the display picture can be basically ignored.

[0021] As one of the embodiments, the diameter of the scattering spheres is 1 μm to 10 μm to improve the uniformity of dispersion under the condition of easy processing. If the diameter of the scattering spheres is too large, it is difficult to disperse them evenly in the optical glue, while smaller-diameter scattering spheres will increase the processing difficulty.

[0022] As one of the embodiments, the dispersion matrix includes an optical adhesive, and a plurality of scattering spheres are uniformly dispersed in the optical adhesive. The optical adhesive is disposed between the cover plate and the light source assembly. Herein, the optical adhesive can achieve the bonding between the cover plate and the polarizer, and can also achieve the bonding between the polarizer and the organic light-emitting layer. This dispersion matrix is applicable to OLED and LCD. The refractive index of the scattering spheres is different from that of the optical adhesive to ensure the scattering effect of the scattering microstructure. In this way, the display screen does not need to add extra materials and assembly processes, and the thickness of the display screen will not increase, hardly increasing the cost. At the same time, when the optical adhesive is under pressure, it will not affect the position and distribution of the scattering spheres, thus avoiding local flash points on the display screen when held or collided.

[0023] As one of the embodiments, the difference between the refractive index of the scattering spheres and the refractive index of the optical adhesive is greater than or equal to 0.04 to achieve an obvious scattering effect and improve the flash point optimization effect.

[0024] As one of the embodiments, the transmission haze of the scattering microstructure is 30% - 90% to ensure the clarity of the display image while improving the scattering effect. If the haze is too low, the scattering spheres are not easily evenly distributed in the optical adhesive, and the scattering effect is not strong, resulting in limited flash point optimization effect; if the haze is too high, it will affect the clarity of the content displayed on the display screen. Further optionally, the haze of the scattering microstructure is 65% - 85% to obtain an obvious flash point optimization effect. As one of the embodiments, the display screen further includes a polarizer, and the polarizer includes a plurality of functional layers stacked in sequence. A scattering microstructure is disposed on any one of the functional layers. Herein, the scattering microstructure can be a new structure outside the structural layer in the original polarizer and can replace one or more structural layers of the original polarizer. Among them, the scattering microstructure can be set during the processing of the polarizer, so that there is no need to increase the assembly process and the number of assembly structures of the display screen, and hardly increase the cost. The setting methods include but are not limited to spraying, bonding, abutting, etc.

[0025] As one of the embodiments, the dispersion matrix includes a light-transmitting coating, and a plurality of scattering spheres are uniformly dispersed in the light-transmitting coating. When processing the polarizer, the fluid light-transmitting coating uniformly dispersed with scattering spheres can be sprayed on the surface of a certain layer of the polarizer, and then cured to form on the polarizer. In this way, the scattering microstructure can be formed in the polarizer. When assembling the display screen, the polarizer provided with the scattering microstructure can be directly applied to the display screen as a finished product without adding assembly steps and the number of assembly structures, saving processing costs. At the same time, the spraying method is convenient and efficient and easy to process.

[0026] In one embodiment, the dispersion matrix includes a pressure-sensitive adhesive, and a plurality of scattering spheres are evenly dispersed within the pressure-sensitive adhesive. This eliminates the need to increase the thickness of the polarizer, modify or add to the polarizer assembly process, and is essentially cost-free. Furthermore, compared to light-transmitting coatings, the pressure-sensitive adhesive is thicker, allowing for a greater haze to be achieved, thereby enhancing the scattering effect.

[0027] As one embodiment, since the light-transmitting coating is sprayed thinly on the polarizer, the transmission haze of the scattering microstructure is 25% to 45% to avoid affecting the clarity of the displayed content.

[0028] As one embodiment, the diameter of the scattering spheres is 2 μm to 6 μm to accommodate the thickness of a thinner dispersion matrix.

[0029] In one embodiment, the anti-glare structure is a roughened surface formed on the second side of the cover plate, with particles ranging in size from 12 μm to 35 μm. If the particles are too large, a grainy effect may be produced, reducing the clarity of the display screen and affecting the color rendering. If the particles are too small, the diffuse reflection effect is not obvious and the scattering angle range is narrow, failing to achieve the desired anti-glare effect.

[0030] In one embodiment, the anti-glare structure has a transmission haze of 20% to 45%. The transmission haze reflects the degree to which the anti-glare structure scatters external light. Within this transmission haze range, light reflected from the second side surface of the cover plate is dispersed into soft, diffusely reflected light, avoiding glare caused by strong light reflections and allowing users to see the screen content more clearly in various lighting environments. If the transmission haze is too high, the transparency of the cover plate may decrease, affecting the clarity of the displayed image and reducing display quality. If the transmission haze is too low, the ideal anti-glare effect may not be achieved.

[0031] In one embodiment, the roughness Ra of the anti-glare structure is 0.15 μm to 0.5 μm, so that the display screen improves fingerprint resistance while ensuring display clarity. If the roughness Ra of the anti-glare structure is too large, the clarity of the displayed image will be reduced, the wear resistance will deteriorate, and the user's tactile comfort will be reduced. If the roughness Ra of the anti-glare structure is too small, the anti-glare effect will be poor, and the fingerprint resistance will be reduced, which will easily cause fingerprints to adhere to the cover surface.

[0032] As one of the embodiments, the roughness Rsm of the anti-glare structure is 15 μm to 100 μm, so as to improve the anti-glare effect of the display screen while ensuring a good touch feeling. If the roughness Rsm of the anti-glare structure is too large, the display effect of the cover plate is uneven, the flash points are obvious, the appearance texture is obvious, and the touch feeling is too rough; if the roughness Rsm of the anti-glare structure is too small, the anti-glare effect is not good, and it is easy to be worn, resulting in the reduction of the anti-glare effect with wear.

[0033] In a second aspect, an electronic device is provided, including a device main body and a display screen as described in the above embodiments, and the display screen is installed on the device main body. Description of the Drawings

[0034] Figure 1 A three-dimensional structure diagram of an electronic device provided by some embodiments of the present application;

[0035] Figure 2 is Figure 1 a cross-sectional view of the electronic device in FIG. at A-A;

[0036] Figure 3 a partial cross-sectional view of the current display screen;

[0037] Figure 4 a display screen when flash points appear on the display screen;

[0038] Figure 5 a partial cross-sectional view of a display screen provided by some embodiments of the present application;

[0039] Figure 6 a cross-sectional view of a display screen provided by some embodiments of the present application;

[0040] Figure 7 a top view of an organic light-emitting layer in a display screen provided by some embodiments of the present application;

[0041] Figure 8 a partial cross-sectional view of a display screen provided by some embodiments of the present application;

[0042] Figure 9 a diffraction pattern formed after the first light ray in an embodiment of the present application is processed by a grating microstructure;

[0043] Figure 10 a partial cross-sectional view of a display screen provided by some embodiments of the present application;

[0044] Figure 11 a partial cross-sectional view of a display screen provided by some embodiments of the present application;

[0045] Figure 12 a partial cross-sectional view of a display screen provided by some embodiments of the present application;

[0046] Figure 13 Arrangement diagram of grating units of some embodiments of the present application on the AG cover plate;

[0047] Figure 14A Actual shot of flash points on the display screen of a conventional AG cover plate; Figure 14B Actual shot of flash points on the display screen of the grating-type AG cover plate proposed in the embodiment of the present application;

[0048] Figure 15 Partial cross-sectional view of the display screen provided by some embodiments of the present application;

[0049] Figure 16 Schematic diagram of the scattering of pixel light by the scattering microstructure in the display screen provided by some embodiments of the present application;

[0050] Figure 17 Partial cross-sectional view of the display screen provided by some embodiments of the present application;

[0051] Figure 18 Cross-sectional view of the polarizer in the display screen provided by some embodiments of the present application;

[0052] Figure 19 Cross-sectional view of the polarizer in the display screen provided by some embodiments of the present application.

[0053] Explanation of reference numerals:

[0054] 100. Display screen; 10. Cover plate; 10a. AG cover plate; 10b. Grating-type AG cover plate; 1001. First light ray; 1001a. Pixel light ray; 1002. Display light ray; 1002a. Interference light ray; 1003. Diffused light ray; 1003a. Diffraction light ray; 1004. Second light ray; 1004a. Scattered light ray; 101. Rough surface; 101a. AG microstructure; 101b. AG reference plane; 1011. AG unit; 20. Light source component; 20a. Organic light-emitting layer; 21. Pixel; 211. Sub-pixel; 21a. Red light-emitting diode; 21b. Green light-emitting diode; 21c. Blue light-emitting diode; 211a. Virtual sub-pixel; 201. First light source direction; 202. Second light source direction; 30. Light processing structure; 31. Grating microstructure; 311. Grating unit; 301. Grating reference plane; 3111. First groove; 3112. First protrusion; 312. Filler; 32. Scattering microstructure; 321. Scattering matrix; 3211. Transparent coating; 3212. Pressure-sensitive adhesive; 322. Scattering sphere; 40. Polarizer; 41. Pressure-sensitive adhesive layer; 42. First cellulose triacetate layer; 43. Polyvinyl alcohol layer; ings; F1. First light source arrangement direction; F2. Second light source arrangement direction; F3. First grating arrangement direction; F4. Second grating arrangement direction;

[0055] 200. Device main body; 2010. Middle frame; 2011. Support plate; 2012. Frame; 2020. Rear cover; 2030. Control component; 2040. Battery; 2001. First installation cavity; 2002. Second installation cavity. Detailed implementation manners

[0056] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, but should not be construed as a limitation to the present application.

[0057] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0058] For the convenience of clearly describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish identical or similar items with basically the same functions and effects. For example, the first limiting portion and the second limiting portion are only used to distinguish different limiting portions, and do not limit their sequence. Those skilled in the art can understand that terms such as "first" and "second" do not limit the quantity and execution order, and terms such as "first" and "second" do not necessarily mean different.

[0059] It should be noted that in the present application, words such as "in one embodiment" or "for example" are used to give examples, illustrations or explanations. Any embodiment or design described as "in one embodiment" or "for example" in the present application should not be construed as more preferred or more advantageous than other embodiments or designs. Rather, the use of words such as "in one embodiment" or "for example" is intended to present relevant concepts in a specific manner.

[0060] In the present application, unless otherwise clearly specified and limited, terms such as "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0061] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0062] For the convenience of understanding, some concepts in the text will be explained now.

[0063] Glare: It refers to the visual condition in the field of vision where due to inappropriate brightness distribution, or extreme brightness contrast in space or time, it causes visual discomfort and reduces the visibility of objects. For example, when looking directly at the sun or strong light shines on the smooth surface of an object, and the reflected light enters the eyes and causes a dazzling feeling, this phenomenon is glare. Glare can be divided into direct glare (such as strong light directly entering the eyes) and indirect glare (such as reflected light entering the eyes). It will interfere with visual perception, affect the observation of object details, and may cause visual fatigue.

[0064] Sparkle: refers to tiny, bright flashes observed on the surface of a display. These sparkles are typically areas of localized increased light intensity caused by optical phenomena such as reflection, refraction, or scattering of light by the display's surface or internal structures. For example, if a display's glass cover or polarizer has microscopic irregularities such as tiny scratches, pits, or bumps, these areas will cause irregular reflection and refraction of light when light strikes them, resulting in sparkles at specific angles.

[0065] Moiré: An interference pattern created when two or more sets of lines, grids, or patterns of different frequencies overlap. This phenomenon is frequently encountered in image processing and display. For example, moiré occurs when two similar, but not identical, periodic patterns (such as two fine grids or scan lines) overlap. Moiré can occur in digital photography (such as photographing finely textured fabrics or display screens), document scanning, or multi-layer printing, degrading image quality and causing the image to appear wavy.

[0066] Diffraction: This refers to the phenomenon in which a wave, when encountering an obstacle or a small hole during propagation, deviates from its straight-line propagation by bypassing the edge of the obstacle or hole. For light, diffraction occurs when it passes through a narrow slit, a small hole, or bypasses the edge of an obstacle. For example, in a single-slit diffraction experiment, after light passes through a narrow slit, it forms alternating light and dark stripes on the screen. This is because the wave nature of light causes its propagation direction to change, and at certain locations the light waves superimpose and enhance each other (forming bright stripes), while at other locations they cancel each other out (forming dark stripes). The diffraction phenomenon is an important manifestation of the wave nature of light.

[0067] Interference: When two or more light waves meet in space and superimpose on each other, their intensity is consistently enhanced in some areas and weakened in others, forming a stable pattern of light and dark or colored stripes. Interference requires that the superimposed light waves have the same frequency, a fixed phase difference, and a fixed vibration direction. For example, in a double-slit interference experiment, after light passes through two parallel slits, the two beams of light superimpose on a light screen. Due to the difference in optical path length, interference fringes form on the screen. Interference is also an important manifestation of the wave nature of light and has a wide range of applications in optical thin films (such as anti-reflection coatings and high-reflection coatings) and laser interferometry.

[0068] Scattering: It refers to the phenomenon that when light, particles, etc. propagate in a medium, due to the inhomogeneity of the medium or interaction with the microparticles in the medium, the propagation direction is changed and scattered in all directions. For example, when sunlight passes through the Earth's atmosphere, it scatters with microparticles such as gas molecules and dust in the atmosphere. Among them, Rayleigh scattering is a common type of scattering, which makes the sky appear blue. When the wavelength of light is less than the size of the microparticles, the intensity of the scattered light is inversely proportional to the fourth power of the wavelength. The wavelength of blue light is shorter and is more easily scattered, so the sky looks blue. The scattering phenomenon has important applications in the fields of optical communication, remote sensing, research on the optical properties of materials, etc.

[0069] Grating: An optical element composed of a large number of equally spaced parallel slits or reflecting surfaces. A grating can disperse or modulate light through diffraction and interference. For example, in a diffraction grating used in a spectrometer, when light shines on the grating, light of different wavelengths diffracts at different angles according to the grating equation, thus decomposing the composite light into monochromatic lights of different wavelengths and achieving spectral analysis. A reflection grating uses a reflecting surface to reflect light, and through the interference and diffraction of the reflected light, it can also play the role of dispersing or modulating light.

[0070] Refractive Index: The ratio of the speed of light in a vacuum to the speed of light in a certain medium. It is a physical quantity that describes the refractive ability of a medium for light. For example, for a medium such as glass, its refractive index is usually greater than 1, which means that the speed of light in glass is slower than that in a vacuum. When light enters from one medium (such as air) into another medium (such as glass), according to the law of refraction, the ratio of the sines of the incident angle and the refraction angle is equal to the ratio of the refractive indices of the two media, and the refractive index determines the degree of refraction of light at the interface of different media.

[0071] Arithmetic Mean Roughness Ra: The arithmetic mean of the absolute values of the profile offsets within the sampling length. It is a parameter used to quantitatively describe the microscopic unevenness of a surface. For example, on the metal surface after machining, the Ra value can characterize the smoothness of the surface. If the Ra value is small, it means the surface is relatively smooth; if the Ra value is large, the surface is relatively rough. It is one of the important indicators for measuring surface quality and has a great influence on the friction, wear, lubrication of mechanical parts and the reflection, scattering and other properties of optical elements.

[0072] Roughness Rsm (Mean Width of the Roughness Elements): The average value of the profile element widths within the sampling length. It is mainly used to describe the average width of individual roughness elements in the surface roughness profile. For example, on a surface with periodic texture, Rsm can help us understand the width distribution of these textures. Different from Ra which focuses on the description of unevenness in the height direction, Rsm focuses on quantifying the surface roughness characteristics in the horizontal direction, and it plays an important role in understanding aspects such as the texture structure and contact characteristics of the surface.

[0073] Transmission Haze: The ratio of the scattered light flux deviating from the incident light direction to the transmitted light flux through the specimen, expressed as a percentage. It is an optical parameter used to measure the degree of internal scattering of transparent or translucent materials. For example, in plastic products or glass products, a high transmission haze means that the internal scattering of light in the material is strong, and the object seen through the material will be relatively blurred. Some car lamp covers have a high transmission haze, which makes the light soft and divergent, while optical lenses usually require a low transmission haze to ensure good visual clarity.

[0074] Figure 1 A three-dimensional structure diagram of an electronic device provided for some embodiments of the present application. As Figure 1 shown, an embodiment of the present application provides an electronic device, which includes a device body 200 and a display screen 100, and the display screen 100 is installed on the device body 200. The above electronic device can also be called a terminal (Terminal), user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), etc. The specific product form of the electronic device can be a mobile phone, tablet computer, desktop computer, personal digital assistant (Personal Digital Assistant, PDA), notebook computer, ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), wearable device (such as headphones, smart bracelets, smart glasses, virtual reality (Virtual Reality, VR) / augmented reality (Augmented Reality, AR) devices, etc.), vehicle-mounted device, game device, multimedia player, and other electronic devices with a display screen 100. It should be noted that the number of device bodies 200 and display screens 100 of the electronic device is not limited. An electronic device may include multiple device bodies 200 connected movably, and at least one device body 200 is provided with a display screen 100, and the number of display screens 100 on the device body 200 can be one or more.

[0075] In the following embodiments, a tablet computer is taken as an example of the electronic device for description.

[0076] Figure 2 is Figure 1 a cross-sectional view of the electronic device in Figure 2 at A-A. As

[0077] Figure 2 shown, the device body 200 includes a middle frame 2010, a rear cover 2020, a control component 2030 and a battery 2040. The middle frame 2010 has a front side and a back side. The display screen 100 is disposed on the front side of the middle frame 2010. The rear cover 2020 is disposed on the back side of the middle frame 2010. The control component 2030 and the battery 2040 are disposed between the display screen 100 and the rear cover 2020 and are electrically connected to the display screen 100 and the battery 2040. The control component 2030 is used to control the display screen 100 to display images. In some optional embodiments, for example, when a touch sensing structure is provided in the display screen 100, the display screen 100 can also input instructions through touch screen operations.

[0077] Optionally, the middle frame 2010 includes a support plate 2011 and a border 2012 disposed around the support plate 2011. Both the display screen 100 and the rear cover 2020 are connected to the border 2012. A first installation cavity 2001 is formed between the display screen 100 and the support plate 2011. The control component 2030 is disposed in the first installation cavity 2001 and is electrically connected to the display screen 100. A second installation cavity 2002 is formed between the rear cover 2020 and the support plate 2011. The battery 2040 is disposed in the second installation cavity 2002 and is electrically connected to the control component 2030 to supply power to the control component 2030 and the display screen 100. Among them, the first installation cavity 2001 and the second installation cavity 2002 can be separated or connected. The control component 2030 includes a circuit board assembly and electronic components electrically connected to the circuit board assembly. The circuit board assembly includes multiple circuit boards, and the circuit boards can be flexible printed circuit boards (FPCs), rigid printed circuit boards, or rigid-flex printed circuit boards. The electronic components include, but are not limited to, a power management integrated circuit (PMIC), a system on chip (SOC), a mobile communication module, a wireless communication module, an audio module, a sensor module, a motor, an indicator, a camera, etc. Among them, both the mobile communication module and the wireless communication module can include, but are not limited to, filters, switches, radio frequency power amplifiers, low noise amplifiers (LNAs), etc. The audio module can include, but is not limited to, an audio power amplifier, and a speaker, a receiver, a microphone, a headset interface, etc. connected to the audio power amplifier. The sensor module can include, but is not limited to, a pressure sensor, a gyroscope, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity light sensor, a fingerprint recognition device, a temperature sensor, a touch sensor, an ambient light sensor, a bone conduction sensor, etc. Among them, the electronic components can be disposed on the circuit board through pads or electrical connectors, or can be independent of the circuit board and achieve electrical connection through electrical connection lines, flexible circuit boards, etc.

[0078] Such as Figure 2As shown in the figure, an embodiment of the present application further provides a display screen 100, which includes a cover plate 10 and a light source component 20. The cover plate 10 and the light source component 20 are stacked, and the light source component 20 emits a first light ray 1001 towards the cover plate 10. Among them, the edge of the cover plate 10 is connected to the frame 2012. The cover plate 10 has a first side and a second side facing away from each other. The first side of the cover plate 10 faces the support plate 2011, and the second side faces away from the support plate 2011. In order to ensure the viewing angle consistency, the first side surface of the cover plate 10 is parallel to the second side surface of the cover plate 10, and both are perpendicular to the emission direction of the first light ray 1001. The light source component 20 is connected to the first side of the cover plate 10 and is electrically connected to the control component 2030. In other embodiments, the light source component 20 and the cover plate 10 may also be both connected to the middle frame 2010, and there is no direct connection relationship between them, which is not limited here.

[0079] The control component 2030 can control the light source component 20 to emit the first light ray 1001. The cover plate 10 is located in the emission direction of the first light ray 1001 and is used to protect the light source component 20. After the first light ray 1001 passes through the cover plate 10, a display light ray 1002 can be formed and emitted into the external space. Among them, the emission direction of the display light ray 1002 is parallel to the emission direction of the first light ray 1001.

[0080] Among them, the light source component 20 may include the light source component 20 of a liquid crystal display (LCD). At this time, the light source component 20 includes an LED (Light-Emitting Diode) backlight. The light source component 20 may also be the light source component 20 of an organic light-emitting diode (OLED). At this time, the light source component 20 includes an organic light-emitting layer.

[0081] The cover plate 10 is made of a light-transmitting hard material. In this embodiment, the cover plate 10 is made of glass, and the glass can be ordinary glass, tempered glass or chemically strengthened glass. In other embodiments, the cover plate 10 may also be made of plastic materials (such as polymethyl methacrylate (PMMA) or polycarbonate (PC), etc.) or ceramic materials (such as alumina ceramics or zirconia ceramics, etc.).

[0082] In general, the cover plate 10 uses smooth glass. Under strong ambient light, external light undergoes specular reflection on the second side surface of the cover plate 10, and this reflected light enters the user's eyes, causing glare. This glare not only greatly reduces the readability of the content displayed on the display screen 100, but also causes harm such as user eye fatigue, dry eyes, and vision decline.

[0083] To solve this problem, in the related art, the second side surface of the cover plate 10 is subjected to an AG (Anti-Glare) process to form an AG microstructure on the glass, thereby manufacturing an AG cover plate to achieve the anti-glare effect, effectively reducing the specular reflection of the display screen 100, and improving the readability and comfort of the content displayed on the display screen 100. Figure 3 It is a partial cross-sectional view of the current display screen. As Figure 3 shown, in this embodiment, an AG microstructure (anti-glare structure) 101a is formed on the second side of the cover plate 10. The AG microstructure 101a includes, but is not limited to, a rough surface 101 formed on the second side of the cover plate 10, and the rough surface 101 can perform diffuse reflection on external light, thereby achieving the anti-glare effect. Among them, after the cover plate 10 is combined with the AG microstructure 101a, an AG cover plate 10a is formed.

[0084] The AG microstructure 101a includes a plurality of AG units 1011, and the AG unit 1011 is the particle that visually forms the rough surface 101. The AG unit 1011 can have two types. One is a groove formed on the second side surface of the cover plate 10, and the other is a protrusion protruding from the second side surface of the cover plate 10. The AG microstructure 101a can be manufactured by any one of AG processes such as sandblasting etching, spray etching, yellow light etching, spraying method, grinding method, coating method, etc.

[0085] All the AG units 1011 can be of the same type, or some can be of different types. When all the AG units 1011 are of the same type, all the AG units 1011 can have the same size and shape, or at least some of them can have different sizes or shapes, as long as the anti-glare function can be achieved, and specific settings can be made according to the actual situation. Two adjacent AG units 1011 can be arranged adjacent to each other or at intervals. The shape of the AG unit 1011 includes, but is not limited to, a triangular pyramid shape, a conical shape, a hemispherical shape (or an approximate hemispherical shape), a prismatic shape or an irregular shape. It should be noted that when the AG unit 1011 is a groove, the shape of the AG unit 1011 refers to the shape of the space boundary formed by the surrounding of the groove wall surface, and when the AG unit 1011 is a protrusion, the shape of the AG unit 1011 refers to the shape of the protrusion.

[0086] To improve the anti-glare effect, the sizes of the plurality of AG units 1011 are different and are not arranged in an array.

[0087] Optionally, the particle size on the rough surface 101 is 12 μm to 35 μm, so as to improve the anti-glare effect of the display screen 100 while ensuring the clarity of the display picture. It can be understood that the particles on the rough surface 101 are the AG units 1011 of the AG microstructure 101a, and the width of the AG unit 1011 is 12 μm to 35 μm. Among them, the width direction of the AG unit 1011 is any direction parallel to the AG reference plane 101b where the AG microstructure 101a is located. If the particle size is too large, it is easy to produce a sense of granularity visually, the clarity of the display picture of the display screen 100 will also decrease, and the color rendering effect will also be affected; if the particle size is too small, the diffuse reflection effect is not obvious, and the scattering angle range is small, and the ideal anti-glare effect cannot be achieved. It should be noted that the AG reference plane 101b is a virtual plane assumed to describe the arrangement position and direction of the AG unit 1011, and is not a structural plane on the cover plate 10.

[0088] Optionally, the transmission haze of the rough surface 101 is 20% to 45%. The transmission haze reflects the degree of scattering of external light by the AG microstructure 101a. Within this transmission haze range, the reflected light on the second side surface of the cover plate 10 is dispersed into soft diffuse reflected light, avoiding the glare formed by strong light reflection, and allowing users to see the screen content more clearly in various lighting environments. If the transmission haze is too large, it is easy to cause a decrease in the transparency of the AG cover plate 10a, affecting the clarity of the display picture and reducing the display quality; if the transmission haze is too small, the ideal anti-glare effect cannot be achieved.

[0089] Optionally, the roughness Ra of the rough surface 101 is 0.15 μm to 0.5 μm, so as to improve the fingerprint resistance performance of the display screen 100 while ensuring the clarity of the display picture. If the roughness Ra of the rough surface 101 is too large, the clarity of the displayed image decreases, the wear resistance becomes poor, and at the same time the comfort of the user's touch is reduced; if the roughness Ra of the rough surface 101 is too small, the anti-glare effect is not good, and at the same time the fingerprint resistance performance becomes poor, and it is easy to cause fingerprints to adhere to the surface of the cover plate 10.

[0090] Optionally, the roughness Rsm of the rough surface 101 is 15 μm to 100 μm, so as to improve the anti-glare effect of the display screen 100 while ensuring a good touch. If the roughness Rsm of the rough surface 101 is too large, the display effect of the AG cover plate 10a is uneven, the flash points are obvious, the appearance texture is obvious, and the touch is too rough; if the roughness Rsm of the rough surface 101 is too small, the anti-glare effect is not good, and at the same time it is easy to wear, resulting in a decrease in the anti-glare effect as the wear occurs.

[0091] However, since the AG microstructure 101a of the AG cover plate 10a can cause optical effects such as scattering, refraction, and interference to the first light ray 1001 emitted by the light source component 20 inside the electronic device, the light ray emitted after being processed by the AG microstructure 101a forms not only the display light ray 1002 for forming the display screen but also interference light rays 1002a. Due to the relatively scattered emission directions of these interference light rays 1002a, they will have varying degrees of overlap or interference, resulting in the cancellation or enhancement of the light intensity on the imaging surface, thereby forming visual noise with color disorder and uneven brightness and darkness. This visual noise is the sparkle (Sparkle) (as Figure 4 shown, Figure 4 is the display screen when sparkle appears on the display screen 100). The generation of sparkle not only affects the user experience but also causes eye fatigue. Especially for OLEDs, since current users have higher and higher requirements for the clarity of display images, the number of pixels per inch (Pixels Per Inch, PPI) of the organic light-emitting layer is also increasing. The situation of overlap or interference of the first light ray 1001 after passing through the AG microstructure 101a also increases accordingly. Therefore, the sparkle situation of the AG cover plate 10a becomes more and more serious as the PPI increases.

[0092] Based on this, the embodiment of the present application provides a display screen 100, which can reduce or even eliminate the sparkle problem without increasing the assembly process and the thickness of the display screen 100.

[0093] Figure 5 is a partial cross-sectional view of the display screen provided by some embodiments of the present application. As Figure 5 shown, the display screen 100 includes a light source component 20, an AG cover plate 10a, and a light processing structure 30. The light source component 20 is disposed on the first side of the AG cover plate 10a to emit the first light ray 1001 in the direction of the cover plate 10. The AG cover plate 10a can achieve an anti-glare effect. The light processing structure 30 is disposed between the light source component 20 and the AG microstructure 101a of the AG cover plate 10a and is used to change the propagation direction of part of the first light ray 1001.

[0094] After the first light ray 1001 passes through the optical processing structure 30, multiple scattered light rays 1003 can be formed, and one or more of the multiple scattered light rays 1003 are used for displaying an image. Since the emission directions of the scattered light rays 1003 are relatively scattered, the mutual interference or overlapping of the multiple scattered light rays 1003 after passing through the AG microstructure 101a is very few, reducing the situation of light intensity cancellation or enhancement on the imaging surface. At the same time, according to the law of conservation of energy, the light intensity of the first light ray 1001 should be approximately equal to the sum of the light intensities of all the scattered light rays 1003. Therefore, the light intensity of each scattered light ray 1003 is much smaller than the light intensity of the first light ray 1001, and the light intensity of the single display light ray 1002 formed by each scattered light ray 1003 is much smaller than the light intensity of the single display light ray 1002 generated when the optical processing structure 30 is not provided. The intensity of the flash point is positively correlated with the light intensity of the single display light ray 1002, that is, the greater the light intensity of the single display light ray 1002, the greater the intensity of the flash point, and the smaller the light intensity of the single display light ray 1002, the smaller the intensity of the flash point. Therefore, the intensity of the flash point generated after the first light ray 1001 passes through the optical processing structure 30 also decreases accordingly, which is visually manifested as the flash point being less obvious, that is, the optimization of the flash point is achieved, thereby improving the user experience and reducing eye fatigue.

[0095] Figure 6 A cross-sectional view of a display screen provided for some embodiments of the present application. As Figure 6As shown, the display screen 100 further includes a polarizer 40 and two optical adhesive layers 50. The light source component 20 includes an organic light-emitting layer 20a. The two optical adhesive layers 50 can be respectively named the first optical adhesive layer 51 and the second optical adhesive layer 52. The first optical adhesive layer 51 bonds the cover plate 10 and the polarizer 40, and the second optical adhesive layer 52 bonds the polarizer 40 and the organic light-emitting layer 20a. It can be understood that along the emission direction of the first light ray 1001, the display screen 100 includes an organic light-emitting layer 20a, a second optical adhesive layer 52, a polarizer 40, a first optical adhesive layer 51, and an AG cover plate 10a connected in sequence. Among them, the organic light-emitting layer 20a, the second optical adhesive layer 52, and the polarizer 40 together form an OLED. The organic light-emitting layer 20a emits the first light ray 1001, and the emission direction of the first light ray 1001 is perpendicular to the plane where the organic light-emitting layer 20a is located. After being adjusted by the polarizer 40, the first light ray 1001 is emitted through the cover plate 10. The first optical adhesive layer 51 is made of the first optical adhesive, and the second optical adhesive layer 52 is made of the second optical adhesive. The materials of the first optical adhesive and the second optical adhesive can be the same or different. Here, the same material means that the components and ratios therein are the same. The thicknesses of the first optical adhesive layer 51 and the second optical adhesive layer 52 can be the same or different, as long as the bonding of the upper and lower layers can be achieved. In other embodiments, the display screen 100 may further include, but is not limited to, an anti-fingerprint (AF) layer, an anti-reflection (AR) layer, or an AR+AF layer disposed above the AG cover plate 10a, etc., which are not limited here.

[0096] Different organic molecules in the organic light-emitting layer 20a can emit light of different colors such as red, green, and blue. Through precise manufacturing processes, the organic light-emitting layer 20a is divided into independent light-emitting regions, and each light-emitting region corresponds to a pixel 21. For example, in a simple RGB (red, green, blue) pixel arrangement of the organic light-emitting layer 20a, each pixel 21 is usually composed of three sub-pixels 211 (one red sub-pixel, one green sub-pixel, and one blue sub-pixel). These sub-pixels 211 are independent light-emitting regions in the organic light-emitting layer 20a, and they can emit light of different intensities through different current drives.

[0097] The light source assembly 20 includes a plurality of light-emitting diodes arranged in an array. One light-emitting diode is one of the above-mentioned sub-pixels 211. One pixel 21 is composed of a red light-emitting diode 21a (sub-pixel 211), a green light-emitting diode 21b (sub-pixel 211), and a blue light-emitting diode 21c (sub-pixel 211). When a certain color needs to be displayed, by controlling the light-emitting intensities of the red, green, and blue light-emitting diodes, various different colors can be mixed by using the principle of visual mixing of the human eye. In this embodiment, the light rays emitted by each light-emitting diode (sub-pixel 211) can be named pixel light rays 1001a, and the first light ray 1001 includes the pixel light rays 1001a emitted by all the light-emitting diodes on the organic light-emitting layer 20a.

[0098] Figure 7 A top view of the organic light-emitting layer in the display screen provided for some embodiments of the present application. As Figure 7 shown, in some embodiments, the array of multiple pixels 21 is m1 rows multiplied by n1 columns. The arrangement direction of a single row of pixels 21 is the extension direction of the line connecting each pixel 21 to the nearest pixel 21. The center-to-center distance between adjacent two rows of pixels 21 and the center-to-center distance between adjacent two columns of pixels 21 can be equal or unequal. The arrangement direction of a single row of pixels 21 is named the first light source arrangement direction F1, and the arrangement direction of a single column of pixels 21 is named the second light source arrangement direction F2. The first light source arrangement direction F1 and the second light source arrangement direction F2 can be perpendicular to each other, or there can be a non-perpendicular angle between the two. In Figure 7 it, the first light source arrangement direction F1 is parallel to the x-axis direction, and the second light source arrangement direction F2 is parallel to the y-axis direction.

[0099] Figure 8 A partial cross-sectional view of the display screen provided for some embodiments of the present application. As Figure 8As shown, in some embodiments, the optical processing structure 30 includes a grating microstructure 31, and the grating microstructure 31 is capable of diffracting the first light ray 1001. The optical processing structure 30 can make a single beam of the first light ray 1001 diffract into multiple dispersed light rays 1003 through the grating microstructure 31. The multiple dispersed light rays 1003 are the diffracted light rays 1003a formed by the diffraction of the single beam of the first light ray 1001. The brighter parts closer to the center among the multiple diffracted light rays 1003a jointly form a display picture visible to the human eye. Since these multiple diffracted light rays are all in different directions, the interference or overlapping situation generated after passing through the AG microstructure is greatly reduced. At the same time, the light intensity of a single diffracted light ray 1003a is much smaller than that of the single beam of the first light ray 1001, thereby reducing the intensity of the flash points generated by the single diffracted light ray 1003a. It should be noted that the light intensity of the pixels visible to the human eye is the total light intensity after the convergence of the multiple diffracted light rays 1003a. Therefore, compared with the light intensity of the pixels without the grating microstructure 31, the decrease is not much, generally within 10%. Therefore, the influence on the clarity of the display picture after setting the grating microstructure 31 is basically acceptable to users.

[0100] Among them, the grating microstructure 31 includes grating units 311 arranged in an array, and all the grating units 311 arranged in the array are on the same plane. That is, the grating microstructure 31 is a two-dimensional grating. The same plane where all the above-mentioned grating units 311 arranged in the array are located can be named as the grating reference plane 301. It should be noted that the grating reference plane 301 is a virtual plane and not a structural plane in the display screen 100.

[0101] Combined with Figure 9 , Figure 9 is the diffraction pattern formed after the first light ray passes through the grating microstructure. The pixel light ray 1001a emitted by each sub-pixel 211 is the single beam of the first light ray 1001. After the pixel light ray 1001a passes through the grating microstructure 31, due to the diffraction effect, a diffraction pattern will be formed, and each sub-pixel 211 will be diffracted into multiple virtual sub-pixels 211a. The grating microstructure 31 will generate diffraction effects in two perpendicular directions x and y parallel to the grating reference plane 301. For the sake of convenient expression, Figure 9 one of the directions is shown for illustration, and the other direction is similar to this.

[0102] Taking the green pixel as an example, the light intensity of the pixel light ray 1001a emitted by the pixel 21 is I m , and after passing through the grating microstructure 31, multi-level diffraction occurs. Then the light intensity I m of the m-th order (m = 0, ±1, ±2,...) diffracted pixel is:

[0103]

[0104] Among them, I0 is the light intensity of the diffracted light ray 1003a that forms the 0th-order diffraction (m = 0) pattern, that is, the light intensity of the diffracted light ray 1003a that forms the diffraction pattern at the very center among all diffraction patterns; β is the diffraction angle of the mth order.

[0105] The grating equation is:

[0106] mλ = d×n(sinθ1 ± sinβ) Formula 2

[0107] Among them, d is the grating constant, that is, the center distance between two adjacent grating units 311, λ is the wavelength of the light ray in vacuum, n is the refractive index of the light ray in the medium, θ1 is the incident angle of the light ray, and β is the diffraction angle of the light ray. It should be noted that the above-mentioned two adjacent grating units 311 refer to a grating unit 311 and its closest adjacent grating unit 311, the center distance refers to the distance between the central normal lines of the two grating units 311, and the central normal line of the grating unit 311 refers to the line passing through the center point of the grating unit 311 in its arrangement direction and perpendicular to the grating reference plane 301.

[0108] In this embodiment, the pixel light ray 1001a is incident on the grating microstructure 31 in a direction perpendicular to the grating reference plane 301, and the incident angle θ1 can be approximately 0. Therefore, Formula 2 can be deformed into:

[0109] mλ = d·nsinβ Formula 3

[0110] After the pixel light ray 1001a passes through the grating microstructure 31, it is diffracted into multiple virtual light source patterns, and the multiple virtual light source patterns are formed by irradiating with multiple diffracted light rays 1003a. For example Figure 9 As shown, if only considering the first-order diffraction effect under a two-dimensional grating, that is, the diffraction effect when m = 1, then 1 pixel can be diffracted into 9 virtual sub-pixels 211a. That is, a single pixel light ray 1001a is diffracted into 9 diffracted light rays 1003a, and the 9 diffracted light rays 1003a form 9 virtual sub-pixels 211a. The 9 virtual sub-pixels 211a are arranged in a 3×3 array. The light intensity of the diffracted light ray 1003a of the virtual sub-pixel 211a located at the center is the strongest, that is, I0 in Formula 1. The light intensity of the remaining 8 virtual sub-pixels 211 around the central virtual sub-pixel 211 is relatively weak, and the 9 virtual sub-pixels 211a together form the display screen.

[0111] The light intensity I of the incident pixel light ray 1001a in and the light intensity I of the diffracted light ray 1003a m The relationship is:

[0112] k·I in = ∑I m Formula 4 where k is the diffraction efficiency and k < 1.

[0113] It can be seen that the light intensity I of each diffracted light ray 1003a m compared with the light intensity I of the pixel light ray 1001a in is greatly reduced. Through research, it is found that the greater the light intensity (or brightness) of the diffracted light ray 1003a, the greater the intensity of the flash point; the smaller the light intensity (or brightness) of the diffracted light ray 1003a, the smaller the intensity of the flash point. That is, the intensity of the flash point is positively correlated with the light intensity (or brightness) of the diffracted light ray 1003a. In the display screen 100, the pixel light ray 1001a is dispersed into multiple diffracted light rays 1003a with smaller light intensity after passing through the grating microstructure 31. In this way, although the number of flash points generated by the pixel 21 increases, the intensity of the flash points is greatly reduced compared with the previous flash point intensity, which is visually less obvious, that is, the effect of optimizing the flash points is achieved.

[0114] Optionally, the center distance between two adjacent grating units 311 is 5 μm to 20 μm, that is, the value of d in Formula 3 is 5 μm to 20 μm, so as to optimize the flash points without affecting the clarity of the display screen. If the value of d is too large, the diffraction efficiency is too low to play the role of optimizing the flash points; if the value of d is too small, the diffraction angle is too large, and the clarity of the content displayed on the display screen 100 will be severely reduced.

[0115] Optionally, the width of the grating unit 311 is 0.5 μm to 15 μm to improve the diffraction efficiency on the basis of being easy to process. The width direction of the grating unit 311 is parallel to the grating reference plane 301 of the grating microstructure 31. If the width of the grating unit 311 is too large, the propagation of the first light ray 1001 on each grating unit 311 is more independent, and the scattered light rays 1003 after processing between two adjacent grating units 311 interact with each other, weakening the periodic interference of the grating microstructure 31; if the width of the grating unit 311 is too small, the manufacturing difficulty increases and the cost performance is low.

[0116] Optionally, the height of the grating unit 311 is 0.5 μm to 3 μm to improve the diffraction efficiency under the condition of being easy to process. The height direction of the grating unit 311 is the direction perpendicular to the grating reference plane 301. As the height of the grating unit 311 increases, the reflection and refraction processes of light on the grating unit 311 become more complex, which will change the phase distribution of light. Therefore, the diffraction efficiency of the grating microstructure 31 will also increase accordingly, and the diffraction effect will be more obvious. However, if the height of the grating unit 311 is too large, problems such as the enhancement of the high-order diffraction effect and the distortion of the diffraction pattern are likely to occur. In addition, when processing the grating unit 311, whether by chemical etching or laser ablation, the height direction and the width direction increase synchronously, and the etching speed in the width direction is much greater than that in the height direction. Therefore, while the height of the grating unit 311 increases, the width of the grating unit 311 will be even larger. Therefore, the height of the grating unit 311 needs to be controlled within 3 μm.

[0117] Figure 10 A partial cross-sectional view of the display screen provided by some embodiments of the present application. As Figure 10 shown, in some embodiments, the grating microstructure 31 is provided in the first optical glue layer 51. Among them, the first optical glue layer 51 includes a first colloid 511 and a second colloid 512 arranged in a stacked manner. The first colloid 511 is bonded to the polarizer 40, and the second colloid 512 is bonded to the AG cover plate 10a. The grating microstructure 31 is formed at the interface between the first colloid 511 and the second colloid 512. The grating unit 311 is a sine surface, and all the grating units 311 are connected and can jointly form a wavy surface, and this wavy surface is the grating microstructure 31.

[0118] However, since both the first colloid 511 and the second colloid 512 in the first optical adhesive layer 51 are composed of soft colloids, when the display screen 100 is strongly pressed or collided, the AG cover plate 10a will apply pressure to the first optical adhesive layer 51, causing the grating microstructure 31 in the first optical adhesive layer 51 to be locally flattened, losing the grating effect, and ultimately resulting in uneven display effects in local areas of the display screen 100. At the same time, the wavy surface of the colloidal material needs to be formed by die stamping, so the size of the grating unit 311 cannot be made very small (generally, the minimum can only be 8 μm), so a better diffraction effect cannot be achieved. At the same time, to reduce the risk of the grating microstructure 31 being locally flattened, the thickness of the second colloid 512 usually needs to be increased to enhance the buffering of the second colloid 512 against external forces, thereby improving the reliability of the grating microstructure 31. In addition, for electronic devices pursuing thinness and lightness, the first optical adhesive layer 51 is relatively close to the light source component 20. To achieve a better diffraction effect, the designed optical path between the grating microstructure 31 and the light source component 20 needs to be increased, usually by increasing the thickness of the first colloid 511. The thicknesses of both the first colloid 511 and the second colloid 512 are relatively large, which leads to a significant increase in the thickness of the first optical adhesive layer 51, which is not conducive to achieving the thinness and lightness of the display screen 100.

[0119] Figure 11 is a partial cross-sectional view of a display screen provided in some embodiments of the present application. As Figure 11 shown, to solve the above problems, the grating microstructure 31 in the embodiments of the present application is formed on the first side surface of the AG cover plate 10a to form a grating-type AG cover plate 10b. In this way, the structural strength of the grating microstructure 31 can be greatly improved, avoiding the destruction of the grating microstructure 31 when the AG cover plate 10a is subjected to a large pressure. At the same time, the distance between the grating microstructure 31 and the light source component 20 is increased compared with setting the grating microstructure 31 in the first optical adhesive layer 51, and there is no need to additionally thicken the first optical adhesive layer 51, and the display screen 100 can be made thinner and lighter.

[0120] Specifically, the grating microstructure 31 includes a plurality of grating units 311 disposed on the first side surface of the cover plate, and the plurality of grating units 311 are arranged in an array on the first side surface of the cover plate 10. Among them, the shapes and sizes of all the grating units 311 are the same, so that the grating microstructure 31 performs stable diffraction, the intensities of the display light rays 1002 formed after each pixel light ray 1001a passes through the grating microstructure 31 are uniform, and the light intensities of the scattered light rays 1003 formed by each pixel 21 are also similar, thereby effectively reducing the flash point intensity.

[0121] There are various implementation methods for the grating unit 311, which are exemplified below.

[0122] As Figure 11As shown, as one implementation, the grating unit 311 includes a first groove 3111 formed in the first side surface of the cover plate 10. The space enclosed by the groove walls of the first groove 3111 has the shape of the first groove 3111. The shape of the first groove 3111 includes but is not limited to a pyramid shape, a cone shape, a frustum of a pyramid shape, a frustum of a cone shape, a hemispherical shape (or approximately hemispherical shape), a prism shape, or an irregular shape. In the illustrated embodiment, the cross-sectional shape of the first groove 3111 can be selected as a hemispherical shape to facilitate etching. At this time, the height of the grating unit 311 refers to the maximum depth of the first groove 3111 in the exit direction of the first light ray 1001.

[0123] The first groove 3111 can be formed by methods such as yellow light etching and laser ablation. The following lists the specific steps of yellow light etching and laser ablation.

[0124] The steps of yellow light etching include: after the AG cover plate 10a is fed, a acid-resistant film is coated on the first side surface of the AG cover plate 10a, and then photoresist is coated on the acid-resistant film. After exposure and development, a mask is formed, and then it is placed in an etching solution for etching to form periodic first grooves 3111. Then the remaining photoresist is removed by an organic solvent, and then it is polished by liquid polishing. After cleaning, the grating microstructure 31 formed on the first side surface of the AG cover plate 10a is finally obtained.

[0125] The steps of laser ablation include: after the AG cover plate 10a is fed, first, according to the desired grating microstructure 31, and in combination with the processing capabilities such as the spot diameter, minimum line width, and spacing of the laser, the corresponding etching pattern is designed and made on the first side surface of the AG cover plate 10a; then the processing parameters such as the laser power or energy density, scanning speed, and scanning times of the laser are set; then the first side surface of the AG cover plate 10a is subjected to laser ablation treatment to obtain periodic first grooves 3111, and then it is polished by liquid polishing. After cleaning, the grating microstructure 31 formed on the first side surface of the AG cover plate 10a is finally obtained.

[0126] Two adjacent first grooves 3111 can be adjacent to each other, that is, the groove walls of two adjacent first grooves 3111 are in contact, and the projections of all the first grooves 3111 on the second optical glue cover the projection of the grating-type AG cover plate 10b on the first optical glue layer 51. Two adjacent first grooves 3111 can also be spaced apart, that is, the first side surface of the grating-type AG cover plate 10b forms a grid-like plane due to the existence of the first grooves 3111.

[0127] The surface of the first optical adhesive layer 51 facing the side of the grating-type AG cover plate 10b can be a plane. A filling space is formed between the first optical adhesive layer 51 and the groove side wall of the first groove 3111, and filling bodies 312 such as air, resin, and optical adhesive can be filled in this filling space. The refractive index of the filling body 312 is different from that of the grating-type AG cover plate 10b to achieve a diffraction effect.

[0128] Optionally, the difference between the refractive index of the filling body 312 and the refractive index of the grating-type AG cover plate 10b needs to be greater than or equal to 0.05 to enhance the diffraction effect. If the difference between the two is too small, the diffraction effect is not obvious.

[0129] Optionally, the filling body 312 is an optical adhesive, and this optical adhesive can have the same material as the first optical adhesive, that is, this optical adhesive is a part of the first optical adhesive. The filling body 312 is formed by thermally pressing the first optical adhesive on the first side of the grating-type AG cover plate 10b. In this way, the bonding area between the first optical adhesive layer 51 and the grating-type AG cover plate 10b is increased, thereby improving the structural strength of the display screen 100. The optical adhesive can be filled completely or only in part of the area, and there is no limitation here.

[0130] Of course, in other embodiments, the surface of the first optical adhesive layer 51 facing the side of the grating-type AG cover plate 10b can also be non-planar. For example, during the bonding process between the first optical adhesive layer 51 and the grating-type AG cover plate 10b, it bulges into the first groove 3111 at the notch corresponding to the first groove 3111, and there is no limitation here.

[0131] Figure 12 This is a partial cross-sectional view of the display screen provided by some embodiments of the present application. As Figure 12 shown, as one implementation manner, a first protrusion 3112 protruding from the first side surface of the cover plate 10. The shape of the first protrusion 3112 includes but is not limited to a pyramid shape, a cone shape, a frustum shape, a truncated cone shape, a hemispherical (or approximately hemispherical) shape, a prism shape, or an irregular shape. In the illustrated embodiment, the cross-sectional shape of the first protrusion 3112 can be selected as a hemispherical shape for easy dot coating processing. At this time, the height of the first protrusion 3112 is the maximum height in the emission direction of the first light ray 1001.

[0132] The material of the first protrusion 3112 includes but is not limited to glass, silicon dioxide, titanium dioxide, resin, etc. The material of the first protrusion 3112 can be the same as the material of the AG cover plate 10a for easy processing and molding, or the material of the first protrusion 3112 can be different from the material of the AG cover plate 10a to meet the requirements for the refractive index of the grating microstructure 31. Specifically, it can be set according to design requirements as long as the diffraction of light can be achieved.

[0133] The first protrusion 3112 can be obtained by methods such as nanoimprinting or inkjet printing. The following are the specific steps of nanoimprinting and inkjet printing.

[0134] The steps of nanoimprinting include: after the AG cover plate 10a is fed, an imprinting adhesive is coated on its first side surface, and the imprinting adhesive is imprinted with an imprinting mold having convex columns complementary to the first protrusion 3112 formed on its surface to obtain periodic first protrusions 3112, and then cured with ultraviolet (UV) light, and finally a grating microstructure 31 formed on the first side surface of the AG cover plate 10a is obtained through cleaning and film covering.

[0135] The steps of inkjet printing include: after the AG cover plate 10a is fed, periodic first protrusions 3112 are directly prepared on its first side surface through an inkjet printing process, and then cured by thermal curing or UV light, and finally a grating microstructure 31 formed on the first side surface of the AG cover plate 10a is obtained through cleaning and film covering.

[0136] Among them, two adjacent first protrusions 3112 can be adjacent to each other, that is, two adjacent first protrusions 3112 are connected, and the projections of all first protrusions 3112 on the second optical adhesive cover the projection of the grating-type AG cover plate 10b on the first optical adhesive layer 51. Two adjacent first protrusions 3112 can also be spaced apart, that is, the portion of the first side surface of the grating-type AG cover plate 10b not covered by the first protrusions 3112 and the first protrusions 3112 together enclose a grid-shaped groove body.

[0137] The surface of the first optical adhesive layer 51 facing the grating-type AG cover plate 10b can be a plane, and the groove walls of the grid-shaped groove body and the first optical adhesive layer 51 can jointly form a filling space, and filling bodies 312 such as air, resin, and optical adhesive can be filled in the filling space. Among them, the refractive index of the filling body 312 is different from the refractive index of the grating-type AG cover plate 10b to achieve a diffraction effect.

[0138] Optionally, the difference between the refractive index of the filling body 312 and the refractive index of the grating-type AG cover plate 10b needs to be greater than or equal to 0.05. If the difference between the two is too small, the diffraction effect is not obvious.

[0139] Optionally, the filling body 312 is an optical adhesive, and the optical adhesive can be of the same material as the first optical adhesive, that is, the optical adhesive is a part of the first optical adhesive, and the filling body 312 is formed by thermally pressing the first optical adhesive on the first side of the grating-type AG cover plate 10b. In this way, the bonding area between the first optical adhesive layer 51 and the grating-type AG cover plate 10b is increased, thereby improving the structural strength of the display screen 100. Among them, the optical adhesive can be filled completely or only in some areas, and there is no limitation here.

[0140] Of course, in other embodiments, the surface of the first optical adhesive layer 51 facing the grating-type AG cover plate 10b may also be non-planar. For example, during the bonding process of the first optical adhesive layer 51 with the grating-type AG cover plate 10b, the notch of the corresponding grid-shaped groove protrudes into the grid-shaped groove, and no limitation is imposed here.

[0141] Figure 13 The layout diagram of the grating units in some embodiments of the present application on the AG cover plate. As Figure 13 shown, in some embodiments, multiple grating units 311 in the grating microstructure 31 are arranged in m2 rows multiplied by n2 columns. The arrangement direction of the grating units 311 in a single row is the extension direction of the line connecting each grating unit 311 and the nearest grating unit 311. The center distance between adjacent two rows of grating units 311 and the center distance between adjacent two columns of grating units 311 may be equal or may not be equal. When the distance between adjacent two rows of grating units 311 is not equal to the distance between adjacent two columns of grating units 311, the center distance between adjacent two grating units 311 in each column of grating units 311 is greater than the center distance between adjacent two grating units 311 in each row of grating units 311. Name the arrangement direction of the grating units 311 in a single row as the first grating arrangement direction F3, and name the arrangement direction of the grating units 311 in a single column as the second grating arrangement direction F4. The first grating arrangement direction F3 and the second grating arrangement direction F4 may be perpendicular to each other or may form a non-perpendicular angle therebetween.

[0142] As the number of pixels gradually increases, the grating units 311 of the grating microstructure 31 also become smaller and smaller to reduce the influence of flash points. However, since the center distance between the grating units 311 and the center distance between adjacent two sub-pixels 211 are also getting closer and closer, the periodic arrangement of the grating units 311 may be superimposed on the periodic arrangement of the light-emitting diodes in the organic light-emitting layer 20a, resulting in interference, and then moiré patterns appear on the display screen 100.

[0143] To solve this problem, the first grating arrangement direction F3 can be set at an angle with the first light source arrangement direction F1 and also at an angle with the second light source arrangement direction F2, that is, the first grating arrangement direction F3 is not in the same direction as the first light source arrangement direction F1 and the second light source arrangement direction F2. The second grating arrangement direction F4 is set at an angle with the first light source arrangement direction F1 and also at an angle with the second light source arrangement direction F2, that is, the second grating arrangement direction F4 is not in the same direction as the first light source arrangement direction F1 and the second light source arrangement direction F2. In this way, the periodic arrangement of the light-emitting diodes and the periodic arrangement of the grating units 311 can be avoided from being superimposed on each other, thereby eliminating the moiré patterns on the display screen 100. Among them, the above angle is an angle greater than 0° and less than 90°, and can be specifically adjusted according to the actual situation as long as the moiré patterns can be eliminated.

[0144] Optionally, the first light source arrangement direction F1 is perpendicular to the second light source arrangement direction F2, the first grating arrangement direction F3 is perpendicular to the second grating arrangement direction F4, the angle between the first grating arrangement direction F3 and the first light source arrangement direction F1 is 45°, and the angle between the first grating arrangement direction F3 and the second light source arrangement direction F2 is 45°, so as to eliminate moiré patterns.

[0145] The flash point test value is closely related to the parameters of the AG microstructure 101a and the grating constant d (d in Formula 3) of the grating microstructure 31. Generally, the flash point objective value of the AG cover plate 10a is between 5.5 and 9.1. However, after adding the grating microstructure 31 to form the grating-type AG cover plate 10b proposed in this embodiment, the flash point objective value of the AG cover plate 10a can be reduced to below 3.0. This objective flash point value is a recognized objective method for evaluating flash point in the industry.

[0146] The flash point effect of the grating AG cover plate 10b in this embodiment is compared with the flash point effect of the conventional AG cover plate 10a. Figure 14A and Figure 14B As shown, Figure 14A They are respectively the actual pictures of flash points on the display screen of the conventional AG cover; Figure 14B They are respectively the flash point real shots on the display screen of the grating AG cover proposed in this embodiment. Obviously, the grating AG cover 10b proposed in this embodiment of the application has a very obvious optimization of the flash point. From the perspective of the objective value of the flash point, the grating AG cover 10b in this embodiment can increase the objective value of the flash point from 6.84 (corresponding to Figure 14A ) to 2.68 (corresponding to Figure 14B ). Under this objective flash point value, the decrease in clarity is within 10%, which does not affect normal display.

[0147] It should be noted that the calculation formula for the above flash point objective value is:

[0148] Flash point objective value = σ / μ Formula 5 Wherein, σ is the standard deviation of pixel brightness; μ is the average value of pixel brightness in multiple areas.

[0149] In practical applications, the brightness of the aforementioned pixels 21 is measured using a flash point tester to derive the values σ and μ required in Formula 4. This flash point tester can be a flash point tester (reference model: SMS-1000) or an imaging colorimeter (reference model: Radiant ProMetric I29). The testing process is as follows: Place the flash point tester in a dark test environment, open a photo of a pure green screen, and manually adjust the brightness to maximum. Use the flash point tester to capture the brightness information of pixels 21 in the displayed image. Software is used to calculate the average value μ and standard deviation σ of the brightness of pixels 21 in the test area. The objective flash point value is then calculated using Formula 5.

[0150] In other embodiments, the grating microstructure 31 may also be formed on other structural layers of the display screen 100, and its structure and setting method are the same as or similar to those of the grating microstructure 31 disposed on the AG cover plate 10a in the above embodiments, which will not be elaborated here.

[0151] In some embodiments, the grating microstructure 31 may also be a hard structure independent of the AG cover plate 10a. For example, the grating unit 311 includes a grating substrate and a plurality of grating units 311 formed on one side surface of the grating substrate. The grating unit 311 may be a plurality of second grooves arranged in an array formed on one side of the grating substrate or a plurality of second protrusions arranged in an array protruding from one side of the grating substrate. Among them, the grating substrate may have the grating units 311 provided only on one side surface, or may have the grating units 311 provided on both side surfaces, and the types and sizes of the grating units 311 on both sides may be the same or different. In this way, in practical applications, the appropriate grating microstructure 31 can be selected according to the actual situation for the assembly of the display screen 100 to meet different user requirements. The grating microstructure 31 can be disposed between any two adjacent structural layers of the display screen 100, and can be adhered through an optical adhesive or the viscosity of the structural layer itself, or can be adhered to other layers without connection.

[0152] Figure 15 It is a partial cross-sectional view of the display screen provided in some embodiments of the present application. As Figure 15 shown, in some embodiments, the light processing structure 30 includes a scattering microstructure 32, and the scattering microstructure 32 can scatter the first light 1001. In this way, the display screen 100 can use the scattering microstructure 32 to scatter the first light 1001 to form multiple scattered light beams 1003. The light intensity of a single scattered light beam 1003 is reduced compared to the light intensity of the first light 1001, thereby reducing the intensity of the flash point generated by a single first light 1001. At the same time, there is no requirement for the setting position of the scattering microstructure 32, increasing the possible setting positions of the light processing structure 30 and improving the flexibility of the setting of the light processing structure 30. In addition, the thickness of the scattering microstructure 32 is not specifically limited, and the requirement of thinning the display screen 100 can be achieved.

[0153] Among them, the scattering microstructure 32 includes a dispersion matrix 321 and a plurality of scattering spheres 322, and the plurality of scattering spheres 322 are uniformly dispersed in the dispersion matrix 321. Among them, the refractive index of the scattering sphere 322 is different from that of the dispersion matrix 321 to ensure the scattering effect of the scattering microstructure 32.

[0154] Figure 16 It is a schematic diagram of the scattering of pixel light by the scattering microstructure in some embodiments of the present application. As Figure 15 and Figure 16As shown, the single-beam pixel light ray 1001a forms scattered light rays 1003 after passing through the scattering microstructure 32. The multiple scattered light rays 1003 include the second light ray 1004 and multiple scattered light rays 1004a. Among them, the scattered light ray 1004a is formed by the scattering of the first light ray 1001 by the scattering sphere 322, and its outgoing direction is in all directions around the scattering sphere 322. The second light ray 1004 is formed by the superposition of the transmitted light ray formed by passing through the scattering microstructure 32 and the above-mentioned scattered light rays 1004a scattered by part of the scattering spheres 322. The second light ray 1004 forms a display light ray 1002 after passing through the AG microstructure 101a to display an image. Since multiple scattered light rays 1003 in different directions are converged in the second light ray 1004, the interference or overlapping situation generated after passing through the AG microstructure 101a is reduced. At the same time, except for the second light ray 1004, other scattered light rays 1004a disperse part of the light intensity of the pixel light ray 1001a, making the light intensity of each scattered light ray 1003 in the second light ray 1004 decrease significantly compared with the pixel light ray 1001a. And the intensity of the flash point is positively correlated with the light intensity of each scattered light ray 1003 in the second light ray 1004. Therefore, the intensity of the flash point also decreases significantly, which is visually less obvious, that is, the effect of flash point optimization is achieved. It should be noted that since the pixel seen by the human eye is the light intensity of the light ray formed by the convergence of all the scattered light rays 1003 in the second light ray 1004, that is, the light intensity of the pixel seen by the human eye is the total light intensity of all the scattered light rays 1003 in the second light ray 1004. Therefore, compared with the light intensity of the pixel when the scattering microstructure 32 is not provided, the decrease is not much, generally within 10%. Therefore, the influence on the clarity of the display image after setting the scattering microstructure 32 is basically acceptable to users.

[0155] Optionally, the difference between the refractive index of the scattering sphere 322 and the refractive index of the dispersion matrix 321 is greater than or equal to 0.04 to achieve an obvious scattering effect and improve the flash point optimization effect.

[0156] Specifically, the dispersion matrix 321 is made of a material that can form a molten state under special conditions, such as plastics, colloids, coatings, resins, glass, etc. The above special conditions can be heating to a certain specific temperature or reducing the environmental pressure to a certain specific value. The scattering spheres 322 can be solid, in which case the scattering spheres 322 can be made of a single material or can be spliced from multiple different materials. The scattering spheres 322 can also be hollow, that is, a cavity filled with gas or vacuum is formed inside the scattering spheres 322. When the scattering spheres 322 are solid spheres, the materials of the scattering spheres 322 include but are not limited to silicon, silicon dioxide, acrylic resin, etc. All the scattering spheres 322 are uniformly dispersed in the dispersion matrix 321. When processing the scattering microstructure 32, multiple scattering spheres 322 can be doped into the dispersion matrix 321 when the dispersion matrix 321 is in a molten state, and the scattering spheres 322 are uniformly dispersed in the dispersion matrix 321 by means such as stirring, heating, adding dispersants, vibration, ultrasonic waves, etc. Then the dispersion matrix 321 is cured to obtain the scattering microstructure 32. It should be noted that the above uniform distribution does not only include the case of absolute uniformity, but can also be roughly uniform. In practical applications, it can be judged whether the scattering spheres 322 are uniformly dispersed in the dispersion matrix 321 according to whether the difference in haze between two different regions of the scattering spheres 322 in the dispersion matrix 321 is within the design range.

[0157] To ensure the light transmittance, both the dispersion matrix 321 and the scattering spheres 322 are made of light-transmitting materials. The scattering microstructure 32 is in a solid state in the use state and can be either hard or soft. The scattering spheres 322 can be either hard or soft.

[0158] Optionally, the scattering spheres 322 are spherical and made of transparent materials, and the dispersion matrix 321 is also made of transparent materials to improve the light transmittance. The sizes and shapes of multiple scattering spheres 322 are the same to ensure that the scattering conditions in each region of the scattering microstructure 32 are the same or similar. Moreover, while the scattering spheres 322 are scattering, they can also diffract the pixel light 1001a to further disperse the fourth display light 1002 to enhance the optimization of the flash point.

[0159] In other embodiments, the scattering spheres 322 can be other regular or irregular shapes except spheres, and the sizes or shapes of different scattering spheres 322 can also be different, as long as they are in a granular shape.

[0160] The scattering microstructure 32 can be arranged at multiple positions of the display screen 100, or can be arranged to replace a certain structure therein. The following lists several setting methods of the scattering microstructure 32.

[0161] As Figure 15 shown, as one implementation method, the scattering microstructure 32 is arranged in the display screen 100 to replace the first optical glue layer 51 or the second optical glue layer 52.

[0162] Taking the replacement of the first optical adhesive layer 51 with the scattering microstructure 32 as an example, the dispersion matrix 321 includes an optical adhesive, and a plurality of scattering spheres 322 are uniformly dispersed in the optical adhesive. The difference between the refractive index of the scattering spheres 322 and the refractive index of the optical adhesive is greater than or equal to 0.04. The optical adhesive is used to bond the AG cover plate 10a and the polarizer 40, and the scattering microstructure 32 can scatter the light processed by the polarizer 40. In this way, the display screen 100 does not need to add extra materials and assembly processes, the thickness of the display screen 100 will not increase, and the cost is hardly increased. At the same time, when the optical adhesive is under pressure, it will not affect the position and distribution of the scattering spheres 322, thereby avoiding local flash points on the display screen 100 after being subjected to increased pressure or collision.

[0163] If the sphere diameter of the scattering spheres 322 is too large, it is difficult to disperse them evenly in the optical adhesive, while smaller-diameter scattering spheres 322 will increase the processing difficulty. Therefore, for an optical adhesive with a thickness of about 20 μm, the sphere diameter of the scattering spheres 322 can be selected as 1-10 μm to improve the dispersion uniformity under the condition of easy processing.

[0164] Optionally, the haze of the scattering microstructure 32 is 30% - 90% to improve the scattering effect while ensuring the clarity of the display screen. If the haze is too low, the scattering effect is not strong, resulting in limited optimization effect of flash points; if the haze is too high, it will affect the clarity of the content displayed on the display screen 100. Further optionally, the haze of the scattering microstructure 32 is 65% - 80% to obtain an obvious optimization effect of flash points.

[0165] When the scattering microstructure 32 replaces the second optical adhesive layer 52, the dispersion matrix 321 is bonded to the polarizer 40 and the organic light-emitting layer 20a. The structure and parameters of the scattering microstructure 32 are similar to the setting method in the above embodiment, and will not be elaborated here.

[0166] Among them, two scattering microstructures 32 can also be provided in the display screen 100. One scattering microstructure 32 replaces the first optical adhesive layer 51, and the other scattering microstructure 32 replaces the second optical adhesive layer 52, that is, the two scattering microstructures 32 are respectively bonded to both sides of the polarizer 40, and are respectively bonded to the AG cover plate 10a and the organic light-emitting layer 20a. At this time, the sum of the haze of the two scattering microstructures 32 should be within 30% - 90%.

[0167] Figure 17 This is a partial cross-sectional view of the display screen provided by some embodiments of the present application. As Figure 17As shown, as one implementation, the scattering microstructure 32 is disposed in the polarizer 40. The polarizer 40 includes a plurality of functional layers stacked in sequence, and the scattering microstructure 32 is disposed on any one of the functional layers. Among them, the scattering microstructure 32 can be disposed when the polarizer 40 is processed, so that there is no need to increase the number of assembly processes and assembly structures of the display screen 100, and the cost increase is less. The setting methods include but are not limited to spraying, bonding, etc.

[0168] Figure 18 The cross-sectional view of the polarizer of some embodiments of the present application is shown. As Figure 18 shown, exemplarily, the plurality of functional layers can be, in sequence along the emission direction of the first light ray 1001, the pressure-sensitive adhesive layer 41, the first triacetyl cellulose layer 42, the polyvinyl alcohol layer 43, the second triacetyl cellulose layer 44, and the protective film layer 45. The scattering microstructure 32 can be located between any two adjacent functional layers or disposed on the outer surface of the polarizer 40. It should be noted that the protective film layer 45 can perform optical compensation or achieve certain functions, such as scratch resistance, anti-reflection, etc. In addition, the protective film layer 45 may not be provided in the polarizer 40, and there is no limitation here.

[0169] Optionally, the dispersion matrix 321 may include a light-transmitting coating 3211, and the scattering spheres 322 are uniformly dispersed in the light-transmitting coating 3211. When the polarizer 40 is processed, the fluid light-transmitting coating 3211 uniformly dispersed with the scattering spheres 322 can be sprayed on the surface of a certain layer of the polarizer 40, and then cured to form on the polarizer 40. In this way, the scattering microstructure 32 can be formed in the polarizer 40. When assembling the display screen 100, the polarizer 40 provided with the scattering microstructure 32 can be directly applied to the display screen 100 as a finished product, without increasing the assembly steps and assembly structures, saving processing costs. At the same time, the spraying method is convenient and efficient and easy to process.

[0170] For example, when processing the polarizer 40, first stack the release film layer, the pressure-sensitive adhesive 3212 layer, the first triacetyl cellulose layer 42, the polyvinyl alcohol layer 43, and the second triacetyl cellulose layer 44, and then spray the fluid light-transmitting coating 3211 uniformly dispersed with the scattering spheres 322 on the side of the second triacetyl cellulose layer 44 facing away from the polyvinyl alcohol layer 43, and then bond the pressure-sensitive adhesive 3212 layer after the light-transmitting coating 3211 is cured, so as to obtain the polarizer 40 having the function of scattering the light ray 1004a.

[0171] Figure 19 The cross-sectional view of the polarizer of some embodiments of the present application is shown. As Figure 19As shown, exemplarily, multiple functional layers may be, in sequence along the emission direction of the first light ray 1001, the first triacetate layer 42, the polyvinyl alcohol layer 43, the second triacetate layer 44, and the protective film layer 45. The scattering microstructure 32 may replace the conventional pressure-sensitive adhesive 3212 layer. Specifically, the dispersion matrix 321 includes the pressure-sensitive adhesive 3212, and multiple scattering spheres 322 are uniformly dispersed in the pressure-sensitive adhesive 3212. The difference between the refractive index of the scattering spheres 322 and the refractive index of the optical adhesive is greater than or equal to 0.04. In the display screen 100, the pressure-sensitive adhesive 3212 is used to bond the first triacetate layer 42 and the organic light-emitting layer 20a. Among them, the thickness of the dispersion matrix 321 may be the same as or similar to the thickness of the pressure-sensitive adhesive 3212 layer in the conventional polarizer 40, so as to ensure that the original structure and function of the polarizer 40 are not affected. In this way, the thickness of the polarizer 40 can be not increased, and at the same time, there is no need to change or add the assembly process of the polarizer 40, and there is basically no cost addition. In addition, compared with the light-transmitting coating 3211, the thickness of the pressure-sensitive adhesive 3212 is greater, so a greater haze can be set to improve the scattering effect.

[0172] Since the light-transmitting coating 3211 is sprayed thinly on the polarizer 40, the haze of the scattering microstructure 32 needs to be controlled at 25% - 45% to avoid affecting the clarity of the displayed content.

[0173] Optionally, the particle diameter of the scattering spheres 322 is 1 - 10 μm. If the sphere diameter of the scattering spheres 322 is too large, it is difficult to disperse them evenly in the optical adhesive, while smaller-diameter scattering spheres 322 will increase the processing difficulty. Further optionally, the particle diameter of the second scattering spheres 322 is 2 μm - 6 μm to adapt to the thickness of the relatively thin dispersion matrix 321.

[0174] It should be noted that multiple layers of the scattering microstructure 32 may also be provided in the polarizer 40. Some or all of the multiple layers of the scattering microstructure 32 may be directly sprayed on a certain layer of the polarizer 40, or some or all of them may replace a certain layer. The structures and haze of different scattering microstructures 32 may be the same or different, and may be specifically set according to optical requirements. Among them, the haze of a single layer of the scattering microstructure 32 needs to be controlled at 25% - 45%, and the total haze of all the scattering microstructures 32 is controlled at 30% - 90%.

[0175] In other embodiments, at least one of the two optical adhesive layers 50 of the display screen 100 is replaced by the scattering microstructure 32 and the scattering microstructure 32 is also provided in the polarizer 40, as long as the scattering of the first light ray 1001 can be achieved and the clarity of the display screen is not affected. In addition, the grating microstructure 31 and the scattering microstructure 32 may also be provided simultaneously in the display screen 100 to enhance the optimization effect on the flash point, and may be specifically selected and set according to the actual situation.

[0176] When the light source component 20 is an LED backlight, the display screen 100 may further include a reflective sheet, a lower polarizer, a liquid crystal layer, a color filter, an upper polarizer, and an optical adhesive layer. The reflective sheet, the LED backlight, the lower polarizer, the liquid crystal layer, the color filter, the upper polarizer, and the AG cover plate are sequentially stacked and jointly form an LCD. Among them, optical adhesive layers are provided between the LED backlight and the lower polarizer, between the lower polarizer and the liquid crystal layer, between the upper polarizer and the color filter, and between the upper polarizer and the AG cover plate. For the LCD, the light processing structure 30 may be disposed in at least one of the AG cover plate, the optical adhesive layer, the upper polarizer, and the lower polarizer. The structure and the setting manner are similar to those of the structure disposed in the OLED in the above embodiments, and will not be elaborated here.

[0177] Finally, it should be noted that the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display screen, characterized in that: include: a cover plate having a first side and a second side opposite to each other, the cover plate being light-transmissive and having an anti-glare structure formed on the second side; a light source assembly, disposed on the first side of the cover plate and configured to emit a first light beam toward the cover plate; At least one light processing structure is disposed between the light source assembly and the anti-glare structure and is used to change a propagation direction of a portion of the first light.

2. The display screen according to claim 1, wherein: The light processing structure includes a grating microstructure, and the grating microstructure is used to diffract the first light.

3. The display screen according to claim 2, wherein: The grating microstructure is formed on the first side surface of the cover plate.

4. The display screen according to claim 3, wherein: The grating microstructure includes a plurality of grating units, and the plurality of grating units are arranged in a two-dimensional array on the first side surface of the cover plate.

5. The display screen according to claim 4, characterized in that The grating unit includes a first groove opened on the first side surface of the cover.

6. The display screen according to claim 5, characterized in that The first groove is filled with a filling body, and the refractive index of the filling body is different from the refractive index of the cover plate.

7. The display screen according to claim 4, characterized in that The grating unit includes a first protrusion protruding from the first side surface of the cover plate.

8. The display screen according to claim 7, wherein: The grid-shaped groove body formed by the plurality of first protrusions is filled with a filling body, and the refractive index of the filling body is different from the refractive index of the cover plate.

9. The display screen according to claim 6 or 8, characterized in that: The difference between the refractive index of the filling body and the refractive index of the cover plate is greater than or equal to 0.

05.

10. The display screen according to claim 4, characterized in that The center distance between two adjacent grating units is 5 μm to 20 μm.

11. The display screen according to claim 4, characterized in that The width of the grating unit is 0.5 μm to 15 μm.

12. The display screen according to claim 4, characterized in that The height of the grating unit is 0.5 μm to 3 μm.

13. The display screen according to claim 4, characterized in that The light source assembly includes a plurality of pixels arranged in a two-dimensional array. The arrangement direction of a single row of the grating units is different from the arrangement direction of a single row of the pixels and the arrangement direction of a single column of the pixels. The arrangement direction of a single row of the grating units is different from the arrangement direction of a single row of the pixels and the arrangement direction of a single column of the pixels.

14. The display screen according to claim 1, wherein: The light processing structure includes a scattering microstructure, which includes a dispersion matrix and a plurality of scattering balls dispersed in the dispersion matrix. The scattering microstructure can scatter the first light.

15. The display screen according to claim 14, characterized in that The diameter of the scattering sphere is 1 μm to 10 μm.

16. The display screen according to claim 14, wherein: The dispersion matrix includes optical glue, a plurality of the scattering balls are dispersed in the optical glue, the optical glue is arranged between the cover plate and the light source assembly, and the refractive index of the scattering balls is different from that of the optical glue.

17. The display screen according to claim 16, wherein: The difference between the refractive index of the scattering sphere and the refractive index of the optical adhesive is greater than or equal to 0.

04.

18. The display screen according to claim 16, wherein: The transmission haze of the scattering microstructure is 30% to 90%.

19. The display screen according to claim 14, wherein: The display screen further comprises a polarizer, which comprises a plurality of functional layers stacked in sequence, and the scattering microstructure is arranged on any of the functional layers.

20. The display screen according to claim 19, wherein: The dispersion matrix includes a light-transmitting paint, and a plurality of the scattering balls are uniformly dispersed in the light-transmitting paint.

21. The display screen according to claim 19, wherein: The dispersion matrix includes a pressure-sensitive adhesive, and a plurality of the scattering balls are uniformly dispersed in the pressure-sensitive adhesive.

22. The display screen according to claim 19, wherein: The transmission haze of the scattering microstructure is 25% to 45%.

23. The display screen according to claim 19, wherein: The diameter of the scattering spheres is 2 μm to 6 μm.

24. The display screen according to claim 1, wherein: The anti-glare structure is a rough surface formed on the second side of the cover plate, and the particle size on the rough surface is 12 μm to 35 μm.

25. The display screen according to claim 1, wherein The transmission haze of the anti-glare structure is 20% to 45%.

26. The display screen according to claim 1, wherein The roughness Ra of the anti-glare structure is 0.15 μm to 0.5 μm.

27. The display screen according to claim 1, wherein The roughness Rsm of the anti-glare structure is 15 μm to 100 μm.

28. An electronic device, characterized in that: The device comprises a device body and a display screen as claimed in any one of claims 1 to 27, wherein the display screen is mounted on the device body.

Images