Optical module, display device, display equipment and electronic equipment

Abstract

The embodiment of the invention provides an optical module, a display device, display equipment and electronic equipment, which are used for solving the problem that the display device provided with an anti-glare cover plate is difficult to meet the requirements of low flash point and high definition. The optical module is applied to the display device, the display device comprises a display panel, and the optical module comprises a dodging layer and an anti-glare layer which are sequentially arranged in the light emitting direction of the display panel. The emergent light intensity distribution generated when the collimated light vertically enters the light uniformizing layer meets the condition that the light intensity attenuation is smaller than or equal to a first threshold value within a set emergent angle range, the light uniformizing layer is used for uniformly mixing light rays emitted by the display panel, and the light rays mixed by the light uniformizing layer can be prevented from generating a flash point when entering the anti-glare layer. Therefore, the flash point can be suppressed without increasing the haze of the anti-glare layer, and the definition of display imaging can be guaranteed.

Description

Optical module, display device, display equipment and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on August 1, 2023, with application number 202310970152.3 and application name “Optical module, display device, display device and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to an optical module, a display device, a display equipment and an electronic device. Background Art

[0003] Display devices are typically protected externally by a cover plate made of a light-transmitting material (e.g., glass or plastic). Under ambient light (such as outdoor sunlight and indoor lighting), the visual quality of existing display devices is easily affected by the reflected light from the flat panel, resulting in glare. For example, when viewing a display device under strong ambient light, the flat panel is prone to specular reflections, resulting in noticeable mirror images, which interferes with the visual quality of the display device.

[0004] To suppress glare, the surface roughness of the flat panel is typically increased to form an anti-glare layer. This scatters light incident on the panel, making it less likely to form specular reflections and reducing the panel's adverse effects on the visual quality of the display device. The anti-glare layer not only scatters ambient light but also the light emitted by the pixels. The scattered light from different pixels creates crosstalk, leading to flash points. While flash points can typically be suppressed by increasing the haze of the anti-glare layer, this can reduce the display's image clarity.

[0005] Summary of the Invention

[0006] In order to improve the problem that a display device provided with an anti-glare layer has difficulty in achieving both low flash point and high definition, the embodiments of the present application provide an optical module, a display device, a display apparatus, and an electronic device.

[0007] In the first aspect, an embodiment of the present application provides an optical module, which is applied to a display device, the display device including a display panel, and the optical module including a uniform light layer and an anti-glare layer arranged in sequence in the light-emitting direction of the display panel; the uniform light layer generates an output light intensity distribution when collimated light is vertically incident, and the light intensity attenuation within the set output angle range satisfies that the light intensity attenuation is less than or equal to a first threshold.

[0008] The optical module provided in the embodiment of the present application includes a light-evening layer and an anti-glare layer. The anti-glare layer can prevent glare, and the light-evening layer can evenly mix the light emitted by the display panel. In the absence of a light-evening layer, the light emitted by the display panel is scattered by the anti-glare layer, resulting in crosstalk of light of different colors. Due to the scattering, bright spots or dark spots will appear, forming flash points. However, the optical module provided in the embodiment of the present application is provided with a light-evening layer before the anti-glare layer. The exit angle of the light emitted by the display panel increases after passing through the light-evening layer. When the light after uniform mixing is incident on the anti-glare layer and is scattered, it is also the mixed light of different colors, rather than the scattering of a single color, which will not cause alternating light and dark, and can suppress the generation of flash points. Therefore, there is no need to increase the haze of the anti-glare layer to suppress flash points. The optical module provided in the embodiment of the present application suppresses glare and screen flash points through the combined effect of the light-evening layer and the anti-glare layer. The anti-glare layer can be set with a smaller haze parameter, thereby ensuring a higher clarity of the image of the display device, meeting the requirements of both low flash point and high clarity.

[0009] In a possible implementation, the roughness of the anti-glare layer is 0.2 μm to 0.35 μm, and the haze of the anti-glare layer is less than or equal to a second threshold.

[0010] In one possible implementation, the light intensity distribution generated by the uniform light layer when the collimated light is vertically incident satisfies: the light intensity attenuation within the set exit angle range is less than or equal to a first threshold value, where the light intensity attenuation refers to the attenuation of the light intensity of the exit light relative to the light intensity of the exit light when the exit angle is 0, and the first threshold value is less than or equal to 30%.

[0011] The light emitted from the light-dodging layer has a smaller intensity attenuation within the set emission angle range, which is equivalent to expanding the light emission angle of the light-dodging layer. The light emitted by the display panel can be evenly mixed after passing through the light-dodging layer, which can reduce the flash point when combined with the scattering effect of the anti-glare layer.

[0012] In a possible implementation, the above-set emission angle range includes (-2° to +2°) to (-60° to +60°).

[0013] The larger the emission angle range of the light-dodging layer, the smaller the attenuation of the emitted light intensity within the emission angle range, the better the light-dodging effect of the light-dodging layer, and the stronger the flash point suppression effect.

[0014] In a possible implementation, the light-dodging layer includes a filling layer and a grating embedded between the filling layers, and the refractive index of the grating is different from the refractive index of the filling layer.

[0015] The light-homogenizing layer is provided with gratings and filling layers with different refractive indices. The light emitted by the display panel can expand the emission angle and reduce the light intensity attenuation when passing through the gratings and filling layers with different refractive indices.

[0016] In a possible implementation, the refractive index of the grating and the refractive index of the filling layer satisfy: |n1-n2|>0.005, where n1 is the refractive index of the grating, and n2 is the refractive index of the filling layer.

[0017] In a possible implementation, the filling layer covers a side of the grating away from the display panel.

[0018] In a possible implementation, the refractive index of the grating and the refractive index of the filling layer satisfy: n1-n2>0.005, where n1 is the refractive index of the grating, and n2 is the refractive index of the filling layer.

[0019] In one possible implementation, the grating includes multiple columnar structures, and the center distance between any two columnar structures and the characteristic size of the columnar structures satisfy: 3D≥P>D, where D is the characteristic size of the columnar structure and P is the center distance between any two columnar structures.

[0020] In a possible implementation, the thickness of the light-dodging layer is less than or equal to 150 μm.

[0021] In a possible implementation, the second threshold is less than or equal to 35%. The anti-glare layer can maintain a smaller haze parameter, reduce the impact on the clarity of imaging of a real device, and maintain a high clarity while suppressing the flash point.

[0022] In a possible implementation, the anti-glare value of the anti-glare layer is less than or equal to 10%.

[0023] In a possible implementation, the thickness of the anti-glare layer is less than or equal to 1 mm.

[0024] In a second aspect, an embodiment of the present application further provides a display device, which includes a display panel, a polarizer, and a module provided in any implementation method of the first aspect, wherein the optical module includes a light-leveling layer and an anti-glare layer, and the polarizer, the light-leveling layer, and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel, or the light-leveling layer, the polarizer, and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel.

[0025] In a possible implementation, the display device further includes a touch circuit layer, and the touch circuit layer is disposed between the light uniformity layer and the polarizer.

[0026] In a possible implementation, the display device further includes a touch circuit, and the touch circuit is integrated on the display panel.

[0027] In a third aspect, an embodiment of the present application further provides a display device, comprising a display panel and a module provided in any implementation manner of the first aspect, wherein the optical module comprises a light-uniforming layer and an anti-glare layer, a color film is provided on the display panel, and the light-uniforming layer and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel.

[0028] In a fourth aspect, an embodiment of the present application further provides a display device, comprising a housing and a display device as provided in any implementation of the second aspect, wherein the display device is mounted on the housing, and the housing is used to support and protect the display device.

[0029] In a fifth aspect, an embodiment of the present application further provides an electronic device, comprising a processor and a display device as provided in any implementation of the second aspect, wherein the display device is electrically connected to the processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of an electronic device provided in an embodiment of the present application;

[0031] FIG2 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0032] FIG3 is a schematic diagram of glare generation according to an embodiment of the present application;

[0033] FIG4 is a schematic diagram of an anti-glare layer provided in an embodiment of the present application for suppressing glare;

[0034] FIG5 is a schematic diagram of an anti-glare layer provided in an embodiment of the present application;

[0035] FIG6 is a schematic diagram of flash points generated by the anti-glare layer provided in an embodiment of the present application;

[0036] FIG7 is a schematic diagram of screen flash points provided by an embodiment of the present application;

[0037] FIG8 is a schematic diagram of haze provided in an embodiment of the present application;

[0038] FIG9 is a schematic diagram of an optical module provided in an embodiment of the present application;

[0039] FIG10 is another schematic diagram of an optical module provided in an embodiment of the present application;

[0040] FIG11 is a schematic diagram of flash points generated by the anti-glare layer provided in an embodiment of the present application;

[0041] FIG12 is a schematic diagram of the working principle of the optical module provided in an embodiment of the present application;

[0042] FIG13 is a diagram showing the intensity distribution of the outgoing light from the light-dotting layer provided in an embodiment of the present application;

[0043] FIG. 14 is a schematic diagram showing a comparison of the light intensity distribution of the outgoing light from the light-dotting layer provided in an embodiment of the present application.

[0044] FIG15 is a schematic structural diagram of a light-dotting layer provided in an embodiment of the present application;

[0045] FIG16 is a schematic structural diagram of another light-dodging layer provided in an embodiment of the present application;

[0046] FIG17 is a schematic diagram of the structures of several light-dotting layers provided in an embodiment of the present application;

[0047] FIG18 is a schematic structural diagram of two light-dotting layers provided in an embodiment of the present application;

[0048] FIG19 is a schematic diagram of the structures of two other light-dotting layers provided in an embodiment of the present application;

[0049] FIG20 is a schematic structural diagram of another light-dotting layer provided in an embodiment of the present application;

[0050] FIG21 is a schematic structural diagram of an anti-glare layer provided in an embodiment of the present application;

[0051] FIG22 is a schematic diagram of a display device provided in an embodiment of the present application;

[0052] FIG23 is a schematic diagram of another display device provided in an embodiment of the present application;

[0053] FIG24 is a schematic diagram of another display device provided in an embodiment of the present application;

[0054] FIG25 is a schematic diagram of another display device provided in an embodiment of the present application;

[0055] Figure 26 is a schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0057] In the following, the terms "first," "second," etc., are used for descriptive convenience only and should not be understood as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more. For example, "plurality of processing units" refers to two or more processing units.

[0058] Furthermore, in the embodiments of the present application, "upper" and "lower" are not limited to being defined relative to the orientation of the components schematically shown in the drawings. It should be understood that these directional terms can be relative concepts. They are used for relative description and clarification, and may change accordingly depending on the orientation of the components in the drawings. In the drawings, the thickness of layers and regions is exaggerated for clarity, and the dimensional ratios between the components in the drawings do not reflect the actual dimensional ratios.

[0059] In the embodiments of the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integrated connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0060] In the embodiments of the present application, the term "module" generally refers to a functional structure divided according to logic. The "module" can be implemented by pure hardware or a combination of hardware and software. In the embodiments of the present application, "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, B exists alone, and A and B exist at the same time.

[0061] In the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0062] The solution provided in the embodiments of the present application can be applied to electronic devices, such as mobile phones, personal computers (PCs), tablet computers (pads), smart wearable products (for example, smart watches, smart bracelets), virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, vehicle-mounted terminals, displays, and other electronic devices, or any electronic device that needs to be configured with buttons. The embodiments of the present application do not impose any special restrictions on the specific forms of the above-mentioned electronic devices.

[0063] Taking a mobile phone as an example, FIG1 shows a schematic diagram of the structure of an electronic device provided by an embodiment of the present application. Referring to FIG1 , the electronic device may include: a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor 180, a motor 191, an indicator 192, a camera 193, a display device 194, a subscriber identification module (SIM) card interface 195, and a key module 196, etc.

[0064] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device. In other embodiments, the electronic device may include more or fewer components than shown, or may combine or separate certain components, or have different component arrangements. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0065] The processor 110 may include one or more processing units. For example, the processor 110 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors.

[0066] Processor 110 may also include a memory for storing instructions and data. In some embodiments, the memory in processor 110 is a cache memory. This memory can store instructions or data that have just been used or are being recycled by processor 110. If processor 110 needs to use the same instruction or data again, it can directly access the memory. This avoids duplicate accesses, reduces processor 110 latency, and thus improves system efficiency.

[0067] It is understood that the interface connection relationship between the modules illustrated in this embodiment is only for illustrative purposes and does not constitute a structural limitation on the electronic device. In other embodiments, the electronic device may also adopt different interface connection methods from the above embodiments, or a combination of multiple interface connection methods.

[0068] Display device 194 is used to display text, images, videos, and more. As a primary I / O device, display device 194 plays an irreplaceable role in daily use and office scenarios. For example, mobile phones, tablets, personal computers, televisions, smart wearable devices, and other electronic devices requiring human-computer interaction are equipped with display devices for displaying information. Alternatively, the display device may also have a touchscreen function, also known as a touch screen, which responds to user operations and receives user commands.

[0069] As shown in FIG2 , FIG2 shows a schematic diagram of the assembly structure of an electronic device, including a display device 194, a middle frame 197, and a back cover 198. The display device 194 and the back cover 198 are respectively arranged on both sides of the middle frame 197 and fixedly bonded to the middle frame 197. The structure of the above-mentioned display device 194 mainly includes a display panel 1941 and a cover plate 1942; wherein the cover plate 1942 is stacked with the display panel 1941, and the cover plate 1942 is located on the light-emitting side of the display panel 1941 and is connected to the display panel 1941. For example, the cover plate 1942 can be bonded to the display panel 1941.

[0070] Here, the material of the cover plate 1942 may be, for example, glass, transparent resin, etc. When the material of the cover plate 1942 is glass, the cover plate 1942 may also be referred to as a glass cover plate or cover glass.

[0071] It should be noted that the display panel 1941 can be a liquid crystal display (LCD) panel or a self-luminous display panel. In the case where the display panel 1941 is a self-luminous display panel, the display panel 1941 can be, for example, an organic light-emitting diode (OLED) display panel or a quantum dot light-emitting diode (QLED) display panel. In the case where the display panel 1941 is a liquid crystal display panel, the display device 194 can be referred to as a liquid crystal display device; in the case where the display panel 1941 is a self-luminous display panel, the display device 194 can be referred to as a self-luminous display device.

[0072] Display devices display images or information through multiple pixels. A display panel consists of multiple pixels, each displaying its own color. The colors displayed by these pixels are combined to form the displayed image. Typically, each pixel consists of three sub-pixels: red, green, and blue. Each pixel displays color by adjusting the color ratio of the three sub-pixels. Ultimately, all of these pixels create the displayed image.

[0073] Currently, the most common display devices used in electronic devices include liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs). LCDs rely primarily on a backlight layer, which emits white light. A colored film sits atop the backlight layer, allowing color to be displayed through the film. A liquid crystal layer, located between the backlight layer and the colored film, adjusts the ratio of red, blue, and green to display different colors. OLEDs use organic light-emitting materials, allowing each pixel to emit light—in other words, self-luminescence. They don't require the backlight or liquid crystal layers of LCDs. This allows them to be thinner and lighter, consume less power, and have a wide range of applications, enabling special features like under-display fingerprint sensors and flexible screens.

[0074] The primary function of a display device is to effectively display information. With this as the core, a series of technological development directions have been expanded. For example, on mobile phones, higher resolution (>400ppi), richer color display capabilities (>95% DCI-P3), and lower power consumption (video playback life >20 hours) have become the mainstream display technology pursuits.

[0075] Furthermore, beyond the quality of the display screen itself, different electronic device design strategies have emerged based on specific application scenarios. For example, when privacy protection is a priority, an anti-peeping screen can be created by adding a film layer whose light transmittance varies with viewing angle.

[0076] Today, with the increasing use of display devices, consumers are beginning to pay attention to the harmful effects of display devices on the human eye. Reducing visual fatigue or discomfort caused by viewing display screens has become a mainstream design trend in advanced display devices. This includes a series of display device designs such as low blue light, no flicker, low reflection, and anti-glare.

[0077] As shown in Figure 3, glare refers to the dazzling effect caused by ambient light reflected from a display screen. Point light sources in everyday life (such as lamplight and sunlight) are relatively bright and unsuitable for direct viewing. When a user uses a device with a display, for example, a mobile phone in sunlight, the screen will reflect sunlight, causing eye discomfort and making it difficult to see the information displayed on the screen. Alternatively, when using a phone under a bright light, the screen will reflect light, creating bright spots on the screen and affecting normal use. Glare can make it more difficult for users to see the content displayed on the screen and may even cause eye discomfort and affect vision. Therefore, anti-glare (AG) technology has become an important research direction in display technology.

[0078] As mentioned in the previous example, glare is caused by specular reflection of ambient light on the screen. Therefore, one approach to combating glare is to avoid specular reflection. For example, the roughness of the screen can be increased to prevent the light from being reflected by specular reflection, thus avoiding glare.

[0079] For example, referring to FIG4 , an anti-glare structure is formed by “roughening” the cover plate or film layer on the screen surface, so that the reflective surface (flat mirror surface) of the screen is changed into a non-reflective matte surface (rough surface with bumps and uneven surfaces), which has a lower reflectance ratio compared with ordinary screens. When ambient light is irradiated on the screen, diffuse reflection occurs, avoiding mirror reflection, thereby preventing the generation of glare.

[0080] The anti-glare ability of a screen can be measured by the anti-glare value, which is also called the Bidirectional Reflectance Distribution Function (BRDF). It describes how the incident light is distributed in various outgoing directions after being reflected by a certain surface. It can also be understood as: when light is incident on a surface from a certain direction, the energy is absorbed by the surface and then emitted in various directions. Therefore, it can be used to describe the anti-glare degree of the surface. Its unit is 1 / solid angle, or sr -1 The anti-glare value refers to the attenuation of the value at a 1° angle compared to 0° (normal viewing angle). For example: BRDF(0°) = a, BRDF(1°) = b, anti-glare value = (ab) / a.

[0081] The screen surface is usually a glass cover or a film layer structure. Refer to Figure 5, which shows a schematic diagram of an anti-glare cover. The anti-glare cover shown in Figure a in Figure 5 is a glass cover. An uneven microstructure morphology is formed on the surface of the glass cover by chemical etching or spraying anti-glare material, which is called an anti-glare structure. The uneven microstructure morphology usually appears in an irregular arrangement, so that the light incident on the cover surface is diffusely reflected to avoid glare.

[0082] The anti-glare cover shown in Figure 5a uses a single glass cover, and Figure 5b shows a schematic diagram of another anti-glare cover. The anti-glare cover shown in Figure 5b is a composite cover. The composite cover is based on thermoplastic material and combines two different materials by hot pressing, such as polymethyl methacrylate and polycarbonate (PMMA+PC), and an uneven microstructure is made on one side, for example, by nanoimprinting or other methods. The uneven microstructure usually appears in an irregular arrangement, so that light incident on the surface of the cover is diffusely reflected to avoid glare.

[0083] In some other possible implementations, display devices can also be anti-glare by applying an additional anti-glare film layer (such as a frosted protective film) to the screen surface. The principles of the anti-glare film layer and the anti-glare cover plate are basically the same, both of which prevent glare by forming an uneven microstructure on the surface. The difference between the two is that the anti-glare film is usually provided on the outermost layer of the screen structure and can be applied as needed. In general, the anti-glare cover plate or anti-glare film layer can form an uneven microstructure on the surface to cause diffuse reflection of ambient light when it is incident, thus avoiding glare.

[0084] According to technical requirements, achieving anti-glare requires managing both the screen's emitted light and the ambient light reflected from it. While the primary function of anti-glare covers and films is to diffusely reflect incoming ambient light through their uneven microstructures, this structure also scatters the light emitted by the display panel, causing uneven crosstalk between sub-pixels and resulting in visual flare.

[0085] Flash point refers to the scattering of light emitted by a certain pixel on the surface of the anti-glare layer when it passes through the anti-glare layer. The light scattered at different positions interferes with each other, and then produces the effect of colored dots or light and dark dots when viewed by the human eye, affecting the display effect.

[0086] As shown in Figure 6a, a schematic diagram shows light emitted by the display panel passing through the glass cover plate to reach the human eye when the glass cover plate on the display device has a smooth surface, that is, no anti-glare layer is present. Generally speaking, the image displayed on a display device can be considered to be composed of a large number of pixels. For example, an image with a resolution of 1920×1080 can be considered to have 1920 pixels per row and 1080 pixels per column. Each pixel is composed of three sub-pixels: a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B. The three sub-pixels display red, green, and blue light, respectively.

[0087] As can be seen from Figure a in Figure 6, when the display device does not have an anti-glare layer, the amount of light generated by the red sub-pixel R, green sub-pixel G, and blue sub-pixel B in each pixel of the display device that transmits through the glass cover is consistent, so that the amount of light of different colors that ultimately reaches the human eye is consistent. For example, when the amount of light generated by the red sub-pixel R, green sub-pixel G, and blue sub-pixel B that transmits is consistent, the human eye sees normal white.

[0088] When the display device is provided with an anti-glare layer, as shown in Figure 6 b, the light generated by the red sub-pixel R, green sub-pixel G, and blue sub-pixel B in each pixel unit in the display device passes through the anti-glare layer. Due to the uneven anti-glare structure on the surface of the anti-glare layer, the red light emitted by the red sub-pixel R, the green light emitted by the green sub-pixel G, and the blue light emitted by the blue sub-pixel B will crosstalk with each other, resulting in uneven amounts of light of different colors reaching the user's field of view, and crosstalk between lights of different colors. For example, more red, blue, and green light pass through a certain area, resulting in a white bright spot; less light passes through a certain area, resulting in a dark spot; and more red light passes through a certain area, resulting in a reddish bright spot. This phenomenon of mixed light and dark is called a flash point phenomenon. Refer to Figure 7, which shows a schematic diagram of screen display flash points. Screen flash points will affect the display quality and visual effects. Therefore, anti-glare technology, on the one hand, needs to focus on reducing or eliminating the glare effect caused by the screen reflecting ambient light through the mirror surface. On the other hand, since anti-glare technology also directly affects the performance of the screen image (such as clarity and flash points), the development of anti-glare technology needs to take into account the management of reflected ambient light and the light management of pixel emission.

[0089] To address the flash point issue, the haze parameter is typically controlled during the preparation of the screen's anti-glare layer. Referring to Figure 8, haze describes the physical properties of light emitted after it has passed through a medium and been scattered. It is defined as the percentage of transmitted light intensity that deviates more than 2.5° from the incident light to the total transmitted light intensity. A higher haze indicates reduced clarity.

[0090] Controlling the haze parameters of the anti-glare layer can achieve a uniform light mixing effect for the light emitted from the display panel, which can reduce the flash point effect. However, this approach will reduce the clarity of the display. For example, Table 1 shows the flash point and clarity at different haze levels.

[0091] Table 1

[0092] As can be seen from Table 1, increasing the haze can suppress the flash point, but increasing the haze will also lead to a significant decrease in clarity. If high haze is needed to reduce the impact of the flash point, it will lead to a serious decrease in clarity. In summary, in order to avoid glare, one possible implementation method is to set an anti-glare layer in the screen. The anti-glare layer can scatter ambient light on the screen surface to avoid glare; but the anti-glare structure will also scatter the light emitted by the display panel, causing the light emitted by different pixels to be scattered by the anti-glare layer, highlighting obvious light crosstalk, resulting in display flash points; and in order to suppress screen flash points, the haze parameters of the anti-glare layer are usually increased, but increasing the haze parameters of the anti-glare layer will lead to a decrease in the clarity of the screen display. Therefore, the current anti-glare solution cannot take into account the requirements of low flash point and high clarity.

[0093] In order to improve the above-mentioned problem, an embodiment of the present application provides a new optical module. The anti-glare layer provided in the above-mentioned example causes flash points on the screen because the uneven structure of the anti-glare layer surface has a relatively more prominent scattering directionality. After the light emitted by the display panel is scattered by the anti-glare layer, obvious light crosstalk is highlighted, causing the screen to display flash points. In order to suppress the flash points on the screen, an embodiment of the present application adds a uniform light layer to the light emitted by the display panel before passing through the anti-glare layer. The light emitted by the display panel first passes through the uniform light layer and then through the anti-glare layer, so that the light type after uniform light no longer has obvious directionality within a larger angle. This makes it impossible for the scattering effect of the anti-glare layer to cause obvious light crosstalk, and can better suppress the flash points on the screen without having to suppress the flash points by increasing the haze. Therefore, the clarity of the imaging can also be guaranteed.

[0094] As shown in Figure 9, Figure 9 shows a schematic diagram of an optical module provided in an embodiment of the present application. The optical module is applied to a display device, and the display device includes a display panel 220. The optical module 210 includes a uniform light layer 211 and an anti-glare layer 212 arranged in sequence in the light-emitting direction of the display panel 220.

[0095] For example, the light-equalizing layer 211 and the anti-glare layer 212 provided in sequence in the light-emitting direction of the display panel 220 provided in the embodiment of the present application only limit the relative positional relationship between the display panel 220, the light-equalizing layer 211 and the anti-glare layer 212, and do not mean that the display panel 220, the light-equalizing layer 211 and the anti-glare layer 212 must be adjacent. For example, for the display panel 220, the light-equalizing layer 211 and the anti-glare layer 212, the light-equalizing layer 211 can be in contact with the display panel 211, and the anti-glare layer 212 can be in contact with the light-equalizing layer 211; alternatively, other layers (such as a polarizer) can be provided between the display panel 220 and the light-equalizing layer 211, and other layers can be provided between the light-equalizing layer 211 and the anti-glare layer 212.

[0096] Referring to FIG. 10 , the anti-glare layer 212 has an uneven anti-glare structure 2121 on its surface in the direction of light emission, which is used to scatter ambient light and prevent the ambient light from being reflected by a mirror and generating glare. Since the anti-glare layer 212 also scatters the light emitted by the display panel 220, which may cause screen flash points, the optical module 210 provided in the embodiment of the present application is provided with a light-evening layer 211. The light-evening layer 211 is used to evenly mix the light emitted by the display panel 220 before it enters the anti-glare layer 212, so that the scattered light pattern is more uniform and has no obvious directionality. In this way, when the evenly mixed light passes through the anti-glare layer 212, the flash points can be avoided.

[0097] As shown in FIG11 , in the case where a light-uniforming layer is not provided, the light-uniforming effect is poor due to its relatively more prominent scattering directionality. For example, the light emitted by the red sub-pixel R is incident on the anti-glare layer area A1; the light emitted by the green sub-pixel G is incident on the anti-glare layer area B1; the light emitted by the blue sub-pixel B is incident on the anti-glare layer area C1; the anti-glare layer will scatter the red light in area A1, the green light in area B1, and the blue light in area C1. Since the light emitted by the red sub-pixel, the green sub-pixel, and the blue sub-pixel has no light-uniforming and each has its own directionality, after such light is scattered by the anti-glare layer, the light emitted by different pixels will crosstalk, resulting in a serious flash point problem.

[0098] In the embodiment of the present application, a light-homogenizing layer 211 is provided before the anti-glare layer 212. The light emitted by the display panel 220 is evenly mixed by the light-homogenizing layer 211 before entering the anti-glare layer 212, making the scattered light pattern more uniform. For example, the light emitted by the red sub-pixel R is homogenized by the light-homogenizing layer 211 and reaches the anti-glare layer areas A1 and B1; the light emitted by the green sub-pixel G is homogenized by the light-homogenizing layer 211 and reaches the anti-glare layer areas A1, B1, and C1; and the light emitted by the blue sub-pixel B is homogenized by the light-homogenizing layer 211 and reaches the anti-glare layer areas B1 and C1. After passing through the light-homogenizing layer 211, the light emitted by each pixel of the display panel 220 is mixed together and no longer has obvious directionality. In this way, the anti-glare layer 212 can suppress the generation of flash points when scattering the homogenized light.

[0099] As mentioned in the above example, the flash point is caused by crosstalk between the different colors of light emitted by the display panel after being scattered by the anti-glare layer. For example, crosstalk occurs between the red light emitted by the red sub-pixel and the green light emitted by the green pixel, and between the green light emitted by the green pixel and the blue light emitted by the blue pixel. In conjunction with Figure 11, the light emitted by the red sub-pixel R enters the A1 area of ​​the anti-glare layer 211; the light emitted by the green sub-pixel G reaches the B1 area of ​​the anti-glare layer; the light emitted by the blue sub-pixel B enters the C1 area of ​​the anti-glare layer; the red light is scattered by the A1 area of ​​the anti-glare layer, the green light is scattered by the B1 area of ​​the anti-glare layer, and the blue light is scattered by the C1 area of ​​the anti-glare layer. Since scattering has no obvious directionality, the different colors of light will crosstalk after being scattered by the anti-glare layer, resulting in screen flash points.

[0100] 12 , the embodiment of the present application provides a light homogenizing layer 211 before the anti-glare layer 212. The light homogenizing layer 211 can homogenize the light emitted by the display panel 220, so that the light pattern of the light emitted by the display panel 220 is more uniform before entering the anti-glare layer 212. For example, in FIG12 , the light emitted by the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B are evenly mixed after passing through the light homogenizing layer, and the output light is similar to white light that is a uniform mixture of red, green, and blue. When the light homogenizing layer 211 is provided, the light entering the A1 region of the anti-glare layer 212 includes a uniform mixture of red, green, and blue light. The light entering the B1 region of the anti-glare layer 212 also includes a uniform mixture of red, green, and blue light. In this way, when the light emitted by the display panel 220 enters the anti-glare layer 212 and is scattered by the anti-glare structure 2121, it is not a single light that is scattered, but rather multiple light rays after homogenization. The scattered light is still a mixture of multiple light rays, thereby suppressing the generation of flash points.

[0101] For example, without a uniform light layer, green light is scattered by the anti-glare layer, causing crosstalk with red light. However, with the uniform light layer 211, the amount of green light, red light, and other colors scattered to the same location increases, preventing noticeable flickering. Due to the presence of the uniform light layer 211, the incident light passes through the uniform light layer 211 over a wider range and exhibits a more uniform light pattern, eliminating noticeable directionality within a wider range of angles. This prevents the scattering effect of the anti-glare layer 212 from causing noticeable light crosstalk, effectively suppressing screen flickering.

[0102] To ensure uniform mixing of light before entering the anti-glare layer 212, the light dodging layer 211 provided in the embodiment of the present application, when collimated light is incident vertically, generates an outgoing light intensity distribution that satisfies a threshold value for light intensity decay within a set range of exit angles. For example, in conjunction with Figure 13, which shows a schematic diagram of the light intensity distribution of outgoing light from the light dodging layer provided in the embodiment of the present application, the outgoing light intensity distribution generated by collimated light incident vertically on the light dodging layer requires that the light intensity decay within the exit angle range of angle X be less than or equal to Y.

[0103] Exemplarily, the range of X is from (-2° to +2°) to (-60° to +60°), and the value range of Y includes 0 to 30%, which means that the output light intensity generated when the collimated light is vertically incident on the uniform light layer is within the range of (-2° to +2°) to (-60° to +60°). The attenuation is less than or equal to 30%. In this way, the light has a larger output angle after passing through the uniform light layer, and the light emitted by different pixels can be evenly mixed after passing through the uniform light layer.

[0104] As shown in Figure 14, Figure 14 shows a comparison of the outgoing light intensity of an ordinary film layer and the uniform light layer provided in an embodiment of the present application. It can be seen from Figure a in Figure 14 that the outgoing light of the ordinary film layer has obvious directionality: that is, the light intensity of the outgoing light is concentrated near the incident direction (the outgoing angle is 0), or the light intensity of the outgoing light has a significantly higher peak in the incident direction, and the spot range of the outgoing light is small. As shown in Figure b in Figure 14, the uniform light layer provided in an embodiment of the present application has an obvious uniform light effect, a large outgoing angle, and small light intensity attenuation. It can maintain a high light intensity within a larger outgoing angle, and the spot range of the outgoing light is larger. In this way, the light spots of different colors emitted by different sub-pixels of the display panel will cross after passing through the uniform light layer, and different light rays can be evenly mixed without obvious directionality. The light after uniform mixing can suppress the generation of screen flash points when passing through the anti-glare layer.

[0105] Referring to FIG. 15 , FIG. 15 shows a schematic diagram of a dodging layer. In this embodiment, FIG. 15 is a cross-sectional view of the dodging layer along the normal direction. The dodging layer 211 includes a filling layer 2112 and a grating 2111 embedded in the filling layer 2112. The filling layer 2112 can be made of a resin material and includes a first surface 2112a and a second surface 2112b. The grating 211 includes a plurality of columnar structures 2111a. The columnar structures 2111a can be arranged periodically. In this embodiment, the period of the columnar structures 2111a is defined as the center-to-center distance between two adjacent columnar structures 2111a, denoted as P. The characteristic dimension of the columnar structures 2111a is denoted as D, with a value range of D from 1 μm to 25 μm. The period of the columnar structures 2111a and the characteristic dimension of the columnar structures 2111a satisfy the following conditions: 3D ≥ P > D. For example, when the cross-section of the columnar structure 2111a is circular, its characteristic dimension D refers to the diameter of the circle; when the cross-section of the columnar structure 2111a is square, its characteristic dimension D refers to the side length of the square; when the cross-section of the columnar structure 2111a is rectangular, its characteristic dimension D refers to the diameter of the circumscribed circle of the rectangle.

[0106] The bottom surface of the columnar structure 2111a is flush with the first surface 2112a of the filling layer 2112, and the height H of the columnar structure 2111a is less than or equal to the thickness L of the light-dodging layer 211. For example, in conjunction with FIG15 , the thickness of the light-dodging layer 2111 is the thickness of the filling layer 2112, and the thickness of the filling layer 2112 is the distance between the first surface 2112a and the second surface 2112b. For example, the refractive index of the grating 2111 is n1, and the refractive index of the filling layer 2112 is n2. The refractive indices of the grating 2111 and the filling layer 2112 satisfy: |n1-n2|>0.005.

[0107] The bottom surface of the columnar structure 2111a is flush with the first surface 2112a of the filling layer 2112, and the cross-section of the columnar structure 2111a can be circular, rectangular or square, etc.; the height of the columnar structure 2111a is less than or equal to the thickness of the filling layer 2112. When the height of the columnar structure 2111a is less than the thickness of the filling layer 2112, it can be considered that the grating 2111 is embedded in the filling layer 2112; in this case, during actual use, the grating 2111 of the uniform light layer 211 (or the first surface 2112a of the filling layer 2112) is located on the side close to the light source (i.e., the display panel), and the refractive index n1 of the grating 2111 is greater than the refractive index n2 of the filling layer 2112. In a possible implementation, the refractive index n1 of the grating 2111 and the refractive index n2 of the filling layer 2112 satisfy: n1-n2>0.005.

[0108] When the height of the columnar structure 2111a is equal to the thickness of the filling layer 2112, refer to Figure 16, which is a cross-sectional view of the light-mixing layer in the normal direction. It can be considered that the grating 2111 is embedded in the filling layer 2112 and penetrates the filling layer 2112. In this case, the lower surface of the columnar structure 2111a is flush with the first surface 2112a of the filling layer 2112, and the upper surface of the columnar structure 2111a is flush with the second surface 2112b of the filling layer 2112. Therefore, such a light-mixing layer 211 has no direction, and any side (for example, the first surface 2112a or the second surface 2112b of the filling layer 2112) facing the display panel can achieve a uniform light mixing effect.

[0109] In one possible implementation, the thickness L of the light-homogenizing layer 211 is less than or equal to 150 μm, that is, the thickness of the filling layer 2112 is less than or equal to 150 μm. Accordingly, the height of the columnar structure 2111 a in the grating 2111 is less than or equal to 150 μm.

[0110] In the dodging layer 211 shown in Figures 15 and 16 above, the multiple columnar structures 2111a of the grating 2111 have the same size and height. In some other possible implementations, for example, with reference to Figure 17, the multiple columnar structures 2111a of the grating 2111 can have different heights. Figures a, b, and c in Figure 17 illustrate several different schematic diagrams of the dodging layer 211. The columnar structures 2111a of the grating 2111 can have different heights, and the columnar structures 2111a of different heights are arranged in a periodic pattern. In this case, multiple columnar structures 2111a with different heights can also be arranged periodically as a whole. Here, the arrangement period of multiple columnar structures 2111a with different heights is recorded as N. For example, the aforementioned period P is the distance between two adjacent columnar structures 2111a, and the period N here is the distance between multiple columnar structures 2111a arranged periodically. For example, taking Figure b in Figure 17 as an example, four columnar structures 2111a with different heights are arranged periodically, then T=4P.

[0111] In addition, the sizes of the multiple columnar structures 2111a of the grating 2111 can be different. Referring to FIG18 , FIG18 shows a cross-sectional view of the light-leveling layer in a direction perpendicular to the normal, as shown in FIG18 a. FIG18 a shows a schematic diagram of a light-leveling layer 211. In the light-leveling layer 211 shown in FIG18 a, the columnar structures 2111a of the grating 2111 are arranged in a cross-orthogonal manner, and the characteristic dimensions of the columnar structures 2111a are the same. Based on FIG18 a, FIG18 b shows a schematic diagram of another light-leveling layer 211. In the light-leveling layer 211 shown in FIG18 b, the grating 2111 includes columnar structures 2111a and columnar structures 2111A of different characteristic dimensions, which are still arranged in a cross-orthogonal manner. Among them, the characteristic dimension of the columnar structure 2111a is D a , the characteristic dimension of the columnar structure 2111A is D A Multiple columnar structures 2111a are arranged around columnar structure 2111A, and at least one columnar structure 2111a can be evenly spaced between any two columnar structures 2111A. The arrangement period P between columnar structures 2111A and columnar structures 2111a satisfies the following: 3D ≥ P > D, where D can be the average of the characteristic dimensions of columnar structures 2111A and columnar structures 2111a.

[0112] Please refer to Figure 19, which is a cross-sectional view of the light-dodging layer in a direction perpendicular to the normal. As shown in Figure 19a, Figure 19a shows a schematic diagram of a light-dodging layer 211. In the light-dodging layer 211 shown in Figure 19a, the columnar structure of the grating 2111 is arranged in a regular hexagonal shape, and the characteristic dimensions of the columnar structure are the same. Based on Figure 19a, Figure 19b shows a schematic diagram of another light-dodging layer 211. In the light-dodging layer 211 shown in Figure 19b, the characteristic dimensions of the columnar structure of the grating 2111 are different, and are still arranged in a regular hexagonal shape. Among them, the characteristic dimension of the columnar structure 2111a is D a , the characteristic dimension of the columnar structure 2111A is D A Multiple columnar structures 2111a are arranged around columnar structure 2111A, and at least one columnar structure 2111a can be evenly spaced between any two columnar structures 2111A. The arrangement period P between columnar structures 2111A and columnar structures 2111a satisfies the following: 3D ≥ P > D, where D can be the average of the characteristic dimensions of columnar structures 2111A and columnar structures 2111a.

[0113] In the above example, the gratings 2111 are arranged periodically, and the characteristic size and height of the columnar structure of the grating 2111 can be the same, or the characteristic size can be the same and the height can be different, or the characteristic size can be different and the height can be the same, or both the characteristic size and the height can be different.

[0114] In addition, in some other possible implementations, the columnar structure of the grating 2111 can also be arranged non-periodically. Based on Figure 15, refer to Figure 20. Figure 20 shows a schematic diagram of another light-leveling layer 211. The columnar structure of the grating 2111 can be arranged non-periodically, but it still needs to satisfy that the thickness of the light-leveling layer 211 is less than or equal to 150 μm, and the height of the columnar structure of the grating 2111 is less than or equal to the thickness of the light-leveling layer 211. The characteristic size of the columnar structure is 1 μm to 25 μm, and the distance between two adjacent columnar structures and the characteristic size of the columnar structure satisfy: 3D ≥ P > D.

[0115] For example, the light distribution after homogenization by the homogenizing layer 211 including a non-periodic grating structure is more uniform, and the light intensity attenuation of the light output in various directions or angles is smaller; while the light homogenization by the homogenizing layer 211 including a periodic grating structure is better in controllability. In this case, the distribution of the light type after homogenization at a certain light output angle can be controlled by designing the size of the grating structure, etc.

[0116] The above example is only an illustrative description of the structure of the light-dodging layer 211. The light-dodging layer 211 may also include other structures, as long as the light-dodging layer 211 generates an output light intensity distribution when the collimated light is vertically incident and the light intensity attenuation within the set output angle range is less than or equal to the threshold.

[0117] The anti-glare layer 212 includes an anti-glare structure 2121, as shown in FIG. 21 . The anti-glare structure 2121 comprises a concave-convex microstructure formed on the surface of the anti-glare layer 212. The concave-convex microstructure is typically arranged in an irregular distribution, but in some other possible implementations, the concave-convex microstructure can also be arranged in a regular distribution. When ambient light strikes such a microstructure, it scatters in different directions, preventing glare. The roughness of the anti-glare layer 212 ranges from 0.20 to 0.35 μm, and the haze of the anti-glare layer 212 ranges from 0 to 35%, for example, 20%. A smaller haze range has less impact on display image clarity. The anti-glare value of the anti-glare layer 212 is less than or equal to 10%. Generally, the thickness of the anti-glare layer 212 is less than or equal to 1 mm.

[0118] The light emitted by the display panel 220 is evenly mixed after passing through the light-uniform layer 211, and the evenly mixed light is scattered by the anti-glare layer 212. Since the light emitted by the display panel 220 has been evenly mixed before being scattered by the anti-glare layer 212, even if it is scattered by the anti-glare layer 212, the scattering is based on the evenly mixed light, so that the crosstalk of different colors of light causing screen flash points can be suppressed; this also allows the anti-glare layer 212 to maintain a low haze. For example, in the embodiment of the present application, the haze of the anti-glare layer 212 is less than or equal to 35%. The low haze of the anti-glare layer 212 has little effect on the clarity of the display. Therefore, the optical module provided in the embodiment of the present application can suppress flash points while maintaining high clarity.

[0119] In a possible implementation, the anti-glare layer 212 may be a glass cover plate, and the above-mentioned uneven microstructure morphology may be prepared by chemically etching or spraying an anti-glare material on the surface of the glass material to form the anti-glare structure 2121 .

[0120] In another possible implementation, the anti-glare layer 212 can also be a composite cover plate. For example, the composite cover plate is based on a thermoplastic material and combines two different materials by hot pressing, so that an interface can be formed on the contact surface of the two different materials, such as polymethyl methacrylate and polycarbonate (PMMA+PC), and an anti-glare structure can be made on one side (usually on the PMMA surface). For example, the anti-glare structure 2121 can be made by nanoimprinting or other methods.

[0121] In another possible implementation, the anti-glare layer 212 may also be a film structure. The surface microstructure of the anti-glare film may be produced by embossing, and the anti-glare film may be pasted on the screen for use as required.

[0122] Based on the optical module provided in the embodiment of the present application, the embodiment of the present application further provides a display device. Referring to FIG. 22 , FIG. 22 shows a schematic structural diagram of the display device 200 provided in the embodiment of the present application.

[0123] The display device 200 includes a display panel 220, a polarizer 230, and an optical module 210 provided in an embodiment of the present application. The optical module 210 includes a light-dodging layer 211 and an anti-glare layer 212. The light-dodging layer 211 is disposed between the display panel 220 and the polarizer 230, and the anti-glare layer 212 is disposed on the polarizer 230. The different layers of the display device 200 are fixedly bonded together by adhesive layers. For example, an adhesive layer 221c is disposed between the anti-glare layer 212 and the polarizer 230, an adhesive layer 221b is disposed between the polarizer 230 and the light-dodging layer 211, and an adhesive layer 221a is disposed between the light-dodging layer 211 and the display panel 220.

[0124] The display panel 220 integrates a substrate, a light-emitting device, and a touch element (for example, an in-cell touch pad or an on-cell touch pad), etc. This embodiment will not be described in detail. For example, the display panel 220 provided in the embodiment of the present application can be an LCD display panel, or it can also be an OLED display panel, or it can also be a display panel of other structures.

[0125] The light-dodging layer 211 is a resin material with a grating inside. Exemplarily, the light-dodging layer 211 includes a grating and a filling layer, wherein the refractive index of the grating is different from that of the filling layer. When collimated light is incident vertically on the light-dodging layer, the light intensity distribution generated by the light-dodging layer satisfies the requirement that the light intensity attenuation is less than a threshold within a set output angle range. For example, within the range of (-2° to +2°) or even (-60° to +60°), the light intensity attenuation of the output light is less than or equal to 30%, thereby uniformly mixing the light emitted by the display panel 220.

[0126] The polarizer 230 may be a circular polarizer (applied to an OLED display structure) or a linear polarizer (applied to an LCD display structure).

[0127] Above the polarizer 230 is the anti-glare layer 212, which includes an anti-glare structure 2121. This structure refers to the uneven microstructure on the surface of the anti-glare layer 212. These microstructures diffusely reflect incoming ambient light, preventing glare on the screen. Because a light-leveling layer 211 is located beneath the anti-glare layer 212, light from the display panel 220 is evenly mixed by the light-leveling layer 211 before entering the anti-glare layer 212. This even mixing of the light by the anti-glare layer 212 prevents crosstalk between different light sources, which can cause screen flickering.

[0128] In the example shown in FIG. 22 above, the light-leveling layer 212 is disposed below the polarizer 230. In another possible implementation, referring to FIG. 23 , an embodiment of the present application further provides another display device 200, which differs from the display device provided in the aforementioned example in that the light-leveling layer 211 can also be disposed above the polarizer 230.

[0129] The display device 200 includes a display panel 220, a polarizer 230, and an optical module 210 provided in an embodiment of the present application. The optical module 210 includes a light-dodging layer 211 and an anti-glare layer 212. The light-dodging layer 211 is disposed on the polarizer 230, and the anti-glare layer 212 is disposed on the light-dodging layer 211. The different layers of the display device 200 are fixedly bonded together by adhesive layers. For example, an adhesive layer 221c is disposed between the anti-glare layer 212 and the light-dodging layer 211, an adhesive layer 221b is disposed between the light-dodging layer 211 and the polarizer 230, and an adhesive layer 221a is disposed between the polarizer 230 and the display panel 220.

[0130] Since the structure and principle of suppressing glare and sparkle of the display device 200 provided in the embodiment of the present application are basically the same as those in the aforementioned example, the only difference is the position of the polarizer 230, which will not be described in detail here.

[0131] In the above example, a touch element is integrated into the display panel 200. In some other possible implementations, the touch element cannot be integrated into the display panel. For example, an embodiment of the present application also provides a display device. As shown in FIG24 , the display device 200 includes a display panel 220, a light-leveling layer 211, a touch circuit layer 240, a polarizer 230, and an anti-glare layer 212. An adhesive layer is provided between different layer structures, and the structures are fixedly bonded by the adhesive layer. For example, an adhesive layer 221d is provided between the anti-glare layer 212 and the polarizer 230, an adhesive layer 221c is provided between the polarizer 230 and the touch circuit layer 240, an adhesive layer 221b is provided between the touch circuit layer 240 and the light-leveling layer 211, and an adhesive layer 221a is provided between the light-leveling layer 211 and the display panel 220.

[0132] The display device 200 provided in the embodiment of the present application includes a light-uniform layer 211 and an anti-glare layer 212. The anti-glare layer 211 includes an anti-glare structure 2121. The anti-glare structure 2121 refers to the uneven microstructure of the anti-glare layer 212. These microstructures diffusely reflect incident ambient light, preventing glare on the screen. The light-uniform layer 211 is used to evenly mix the light emitted by the display panel 220. When the evenly mixed light enters the anti-glare layer 212 and is scattered by the anti-glare layer 212, crosstalk between different light sources can be avoided, which can cause screen flickering.

[0133] In the aforementioned example, the display device includes a polarizer. With the advancement of display technology, the industry has recently developed color filter on encapsulation (COE) technology, also known as polarizer-less technology. COE technology is gaining popularity. Using COE to integrate a color filter layer achieves the purpose of polarizer-less (POL-less), which helps reduce the overall thickness of the display device and improve its brightness.

[0134] Based on this, an embodiment of the present application further provides another display device. Referring to FIG. 25 , FIG. 25 shows a schematic structural diagram of a display device 200 provided in an embodiment of the present application.

[0135] The display device 200 includes a display panel 220, a light-dodging layer 211, and an anti-glare layer 212. Adhesive layers are provided between different layer structures to fix and bond them together. For example, an adhesive layer 221b is provided between the anti-glare layer 212 and the light-dodging layer 211, and an adhesive layer 221a is provided between the light-dodging layer 211 and the display panel 220.

[0136] The main difference between the embodiment of the present application and the aforementioned example is that the polarizer is omitted in the present embodiment. The display device 200 provided in the embodiment of the present application is mainly used in a display architecture equipped with COE technology, and its display panel 220 integrates a substrate, a light-emitting device, a color filter, and a touch element.

[0137] The display device 200 provided in the embodiment of the present application employs substantially the same principles for suppressing glare and flash points as in the aforementioned examples. For example, the display device 200 provided in the embodiment of the present application includes a light-uniform layer 211 and an anti-glare layer 212. The anti-glare layer 212 includes an anti-glare structure 2121. The anti-glare structure 2121 refers to the uneven microstructure morphology on the surface of the anti-glare layer 212. These microstructures diffusely reflect ambient light incident on the anti-glare layer 212, thereby preventing glare on the screen. The light-uniform layer 211 is used to evenly mix the light emitted by the display panel 220. This evenly mixed light, when incident on the anti-glare layer 212 and scattered by the anti-glare layer 212, prevents crosstalk between different light sources, which can cause flash points on the screen.

[0138] An embodiment of the present application further provides a display device 300 . Referring to FIG. 26 , the display device 300 includes a housing 310 and the display device 200 provided in the aforementioned example. The display device 200 is mounted on the housing 310 . The housing 310 is used to support and protect the display device 200 .

[0139] Exemplarily, the display device 300 may be any device with a display function, such as a monitor, a television, etc.

[0140] An embodiment of the present application also provides an electronic device, which may be the electronic device shown in FIG. 1 . The electronic device includes a processor and a display device provided in the above example, and the display device is connected to the processor for displaying information.

[0141] For example, the electronic device may be a mobile phone, a tablet computer, a personal computer, a television, a smart wearable device, or any electronic device with a display function.

[0142] Those skilled in the art will appreciate that, in one or more of the examples above, the functions described herein may be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions may be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transmission of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0143] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An optical module, characterized in that: The optical module is applied to a display device, the display device includes a display panel, and the optical module includes a light-homogenizing layer and an anti-glare layer sequentially arranged in a light-emitting direction of the display panel; The light uniformity layer generates an outgoing light intensity distribution when the collimated light is vertically incident, and the light intensity attenuation within the set outgoing angle range is less than or equal to a first threshold.

2. The optical module according to claim 1, characterized in that: The roughness of the anti-glare layer is 0.2 μm to 0.35 μm, and the haze of the anti-glare layer is less than or equal to a second threshold.

3. The optical module according to claim 1 or 2, characterized in that: The light intensity attenuation refers to the attenuation of the light intensity of the outgoing light relative to the light intensity of the outgoing light when the outgoing angle is 0, and the first threshold is less than or equal to 30%.

4. The optical module according to any one of claims 1 to 3, characterized in that: The set emission angle range includes (-2° to +2°) to (-60° to +60°).

5. The optical module according to any one of claims 1 to 4, characterized in that: The light homogenizing layer includes a filling layer and a grating embedded between the filling layers, and the refractive index of the grating is different from the refractive index of the filling layer.

6. The optical module according to claim 5, characterized in that: The refractive index of the grating and the refractive index of the filling layer satisfy: |n1-n2|>0.005, wherein n1 is the refractive index of the grating, and n2 is the refractive index of the filling layer.

7. The optical module according to claim 5, characterized in that: The filling layer covers a side of the grating away from the display panel.

8. The optical module according to claim 7, characterized in that: The refractive index of the grating and the refractive index of the filling layer satisfy: n1-n2>0.005, wherein n1 is the refractive index of the grating, and n2 is the refractive index of the filling layer.

9. The optical module according to any one of claims 5 to 8, characterized in that: The grating includes a plurality of columnar structures, and the center distance between any two columnar structures and the characteristic size of the columnar structures satisfy: 3D≥P>D, where D is the characteristic size of the columnar structure, and P is the center distance between any two columnar structures.

10. The optical module according to any one of claims 1 to 9, characterized in that: The thickness of the light-dotting layer is less than or equal to 150 μm.

11. The optical module according to any one of claims 2 to 10, characterized in that: The second threshold is less than or equal to 35%.

12. The optical module according to any one of claims 1 to 11, characterized in that: The anti-glare value of the anti-glare layer is less than or equal to 10%.

13. The optical module according to any one of claims 1 to 12, characterized in that: The thickness of the anti-glare layer is less than or equal to 1 mm.

14. A display device, characterized in that: The display device includes a display panel, a polarizer, and an optical module according to any one of claims 1 to 13, wherein the optical module includes a light-evening layer and an anti-glare layer, and the polarizer, the light-evening layer, and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel, or the light-evening layer, the polarizer, and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel.

15. The display device according to claim 14, characterized in that: The display device further includes a touch circuit layer, and the touch circuit layer is arranged between the light uniforming layer and the polarizer.

16. The display device according to claim 14 or 15, characterized in that: The display device further includes a touch control circuit, and the touch control circuit is integrated on the display panel.

17. A display device, characterized in that: The display device comprises a display panel and an optical module as claimed in any one of claims 1 to 13, wherein the optical module comprises a light-evening layer and an anti-glare layer, a color film is arranged on the display panel, and the light-evening layer and the anti-glare layer are arranged sequentially in the light-emitting direction of the display panel.

18. A display device, characterized in that: It comprises a shell, and the display device according to any one of claims 14 to 17, wherein the display device is mounted on the shell, and the shell is used to support and protect the display device.

19. An electronic device, characterized in that: The electronic device comprises a processor and the display device according to any one of claims 14 to 17, and the display device is electrically connected to the processor.

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