Optical module, display device, display equipment and electronic equipment

Abstract

The embodiments of the present application provide an optical module, a display device, a display equipment and an electronic device, which are used to improve the problem that a 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 a display device, the display device includes a display panel, and the optical module includes 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 is less than or equal to a first threshold value, and the uniform light layer is used to uniformly mix the light emitted by the display panel, and the light after mixing by the uniform light layer can avoid the generation of flash points when it enters the anti-glare layer, so that there is no need to suppress the flash points by increasing the haze of the anti-glare layer, and the clarity of the display imaging can be guaranteed.

Description

Technical Field

[0001] 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

[0002] Display devices are usually protected externally by a cover plate made of a light-transmitting material (e.g., glass or plastic). Under the irradiation of ambient light (such as outdoor sunlight and indoor light), the visual viewing effect of existing display devices is easily affected by the reflected light of such a flat panel, resulting in glare. For example, when viewing the display device under strong ambient light, the flat panel is prone to specular reflection, and thus is prone to produce obvious mirror images, thereby interfering with the visual viewing effect of the display device.

[0003] In order to suppress glare, the surface roughness of the flat panel is usually increased to form an anti-glare layer, so that the light irradiated on the flat panel is scattered, so that the light irradiated on the flat panel is not easy to form a mirror reflection, reducing the adverse effect of the above flat panel on the visual viewing effect of the display device. The anti-glare layer not only scatters the ambient light, but also scatters the light emitted by the pixels. The light emitted by different pixels is scattered and crosstalk occurs, which will cause flash points. Usually, the flash points can be suppressed by increasing the haze of the anti-glare layer, but this will cause the image clarity of the display device to decrease. Summary of the invention

[0004] In order to improve the problem that a display device provided with an anti-glare layer is difficult to achieve both low flash point and high definition, the embodiments of the present application provide an optical module, a display device, a display equipment and an electronic device.

[0005] 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, 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, which satisfies that the light intensity attenuation within the set output angle range is less than or equal to a first threshold.

[0006] 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 case where the light-evening layer is not provided, the light emitted by the display panel is scattered by the anti-glare layer, and crosstalk of light of different colors will appear. 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 emission angle of the light emitted by the display panel increases after passing through the light-evening layer. When the light after evenly mixing is incident on the anti-glare layer and is scattered, it is also the mixed light of different colors that is scattered, rather than a single color. It will not cause the alternation of light and dark, and the generation of flash points can be suppressed. Therefore, there is no need to increase the haze of the anti-glare layer to suppress the flash points. The optical module provided in the embodiment of the present application suppresses the generation of 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, so that the high clarity of the imaging of the display device can be guaranteed, meeting the requirements of both low flash point and high clarity.

[0007] In a possible implementation manner, 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 the second threshold.

[0008] 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, and 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 is less than or equal to 30%.

[0009] The light emitted from the light-homogenizing layer has a smaller attenuation in the set emission angle range, which is equivalent to expanding the light emission angle of the light from the light-homogenizing layer. The light emitted from the display panel can be evenly mixed after passing through the light-homogenizing layer, which can reduce the flash point when combined with the scattering effect of the anti-glare layer.

[0010] In a possible implementation, the above-set emission angle range includes (-2° to +2°) to (-60° to +60°).

[0011] The larger the emission angle range of the light-homogenizing layer, the smaller the attenuation of the emission light intensity within the emission angle range, the better the light-homogenizing effect of the light-homogenizing layer, and the stronger the flash point suppression effect.

[0012] In a possible implementation, 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.

[0013] The light homogenizing layer is provided with gratings and filling layers with different refractive indices. The two have different refractive indices. When the light emitted by the display panel passes through the gratings and filling layers with different refractive indices, the emission angle can be expanded and the light intensity attenuation can be reduced.

[0014] 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.

[0015] In a possible implementation manner, the filling layer covers a side of the grating away from the display panel.

[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 one possible implementation, 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.

[0018] In a possible implementation, the thickness of the light-dodging layer is less than or equal to 150 μm.

[0019] In a possible implementation, the second threshold is less than or equal to 35%. The anti-glare layer can maintain a smaller haze parameter, can reduce the impact on the clarity of imaging of a real device, and can maintain a higher clarity while suppressing the flash point.

[0020] In a possible implementation manner, the anti-glare value of the anti-glare layer is less than or equal to 10%.

[0021] In a possible implementation manner, the thickness of the anti-glare layer is less than or equal to 1 mm.

[0022] In the second aspect, an embodiment of the present application further provides a display device, comprising a display panel, a polarizer, 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, and the polarizer, the light-uniforming layer, and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel, or the light-uniforming layer, the polarizer, and the anti-glare layer are arranged in sequence in the light-emitting direction of the display panel.

[0023] 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.

[0024] In a possible implementation, the display device further includes a touch control circuit, and the touch control circuit is integrated on the display panel.

[0025] In the third aspect, an embodiment of the present application further provides a display device, comprising a display panel and a module provided in any implementation method of the first aspect, the optical module comprising a light-uniforming layer and an anti-glare layer, a color film is arranged 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.

[0026] In a fourth aspect, an embodiment of the present application further provides a display device, comprising a housing and a display device provided in any implementation manner 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.

[0027] 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

[0028] Figure 1 A schematic diagram of an electronic device provided in an embodiment of the present application;

[0029] Figure 2 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of glare generation provided in an embodiment of the present application;

[0031] Figure 4 A schematic diagram of the anti-glare layer provided in an embodiment of the present application for suppressing glare;

[0032] Figure 5 A schematic diagram of an anti-glare layer provided in an embodiment of the present application;

[0033] Figure 6 A schematic diagram of flash points generated by the anti-glare layer provided in an embodiment of the present application;

[0034] Figure 7 A schematic diagram of screen flash points provided in an embodiment of the present application;

[0035] Figure 8 A schematic diagram of haze provided in an embodiment of the present application;

[0036] Fig. 9 A schematic diagram of an optical module provided in an embodiment of the present application;

[0037] Fig.10 Another schematic diagram of an optical module provided in an embodiment of the present application;

[0038] Fig.11 A schematic diagram of flash points generated by the anti-glare layer provided in an embodiment of the present application;

[0039] Fig.12A schematic diagram of the working principle of the optical module provided in the embodiment of the present application;

[0040] Fig.13 A light intensity distribution diagram of the outgoing light from the light-dotting layer provided in an embodiment of the present application;

[0041] Fig.14 A schematic diagram comparing the light intensity distribution of the outgoing light from the light-dotting layer provided in the embodiment of the present application

[0042] Fig.15 A schematic diagram of the structure of a light-dotting layer provided in an embodiment of the present application;

[0043] Fig.16 A schematic diagram of the structure of another light-dotting layer provided in an embodiment of the present application;

[0044] Fig.17 Schematic diagram of the structures of several light-dotting layers provided in the embodiments of the present application;

[0045] Fig.18 A schematic diagram of the structures of two light-dotting layers provided in the embodiments of the present application;

[0046] Fig.19 Schematic diagram of the structures of two other light-dotting layers provided in the embodiments of the present application;

[0047] Fig. 20 A schematic diagram of the structure of another light-dotting layer provided in an embodiment of the present application;

[0048] Fig.21 A schematic diagram of the structure of the anti-glare layer provided in an embodiment of the present application;

[0049] Fig. 22 A schematic diagram of a display device provided in an embodiment of the present application;

[0050] Fig.23 A schematic diagram of another display device provided in an embodiment of the present application;

[0051] Fig.24 A schematic diagram of another display device provided in an embodiment of the present application;

[0052] Fig.25 A schematic diagram of another display device provided in an embodiment of the present application;

[0053] Fig.26 A schematic diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] 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 of the embodiments.

[0055] In the following, the terms "first", "second", etc. are used only for convenience of description and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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, a plurality of processing units refers to two or more processing units.

[0056] In addition, in the embodiments of the present application, "upper" and "lower" are not limited to being defined relative to the orientation of the components schematically placed in the drawings. It should be understood that these directional terms can be relative concepts. They are used for description and clarification relative to the components, and they can change accordingly according to the change in the orientation of the components placed in the drawings. In the drawings, for the sake of clarity, the thickness of the layers and regions is exaggerated, and the size ratio relationship between the parts in the drawings does not reflect the actual size ratio relationship.

[0057] 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 integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0058] In the embodiments of the present application, the term "module" is generally a functional structure divided according to logic, and the "module" can be implemented by pure hardware, or by a combination of software and hardware. In the embodiments of the present application, "and / or" describes the association relationship of 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.

[0059] In the embodiments of the present 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 the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0060] 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 (e.g., smart watches, smart bracelets), virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, vehicle-mounted terminals, displays and other electronic devices, etc., or can also be 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.

[0061] Take the mobile phone as an example, Figure 1 The structure diagram of an electronic device provided by the present application is shown. Figure 1 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.

[0062] It is to 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 in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0063] 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 processor (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), etc. Different processing units may be independent devices or integrated into one or more processors.

[0064] The processor 110 may also be provided with a memory for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may store instructions or data that the processor 110 has just used or cyclically used. If the processor 110 needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor 110, and thus improves the efficiency of the system.

[0065] It is understandable that the interface connection relationship between the modules illustrated in this embodiment is only a schematic illustration and does not constitute a structural limitation of the electronic device. In other embodiments, the electronic device may also adopt different interface connection methods in the above embodiments, or a combination of multiple interface connection methods.

[0066] The display device 194 is used to display text, images, videos, etc. As a major I / O device, the display device 194 plays an irreplaceable role in daily use and office scenarios. For example, mobile phones, tablet computers, personal computers, televisions, smart wearable devices, or other electronic devices that require human-computer interaction are all equipped with a display device for displaying information; or, the display device may also have a touch function, also known as a touch screen or a touch screen, and the touch screen may respond to the user's operation to obtain the user's operation instructions.

[0067] like Figure 2 As shown, Figure 2The schematic diagram of the assembly structure of the electronic device is shown, including a display device 194, a middle frame 197 and a back cover 198, wherein 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 (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 connected to the display panel 1941, for example, the cover plate 1942 can be bonded to the display panel 1941.

[0068] 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 a cover glass.

[0069] It should be noted that the display panel 1941 may be a liquid crystal display (LCD) panel or a self-luminous display panel. When the display panel 1941 is a self-luminous display panel, the display panel 1941 may be, for example, an organic light-emitting diode (OLED) display panel or a quantum dot light emitting diode (QLED) display panel. When the display panel 1941 is a liquid crystal display panel, the display device 194 may be referred to as a liquid crystal display device; when the display panel 1941 is a self-luminous display panel, the display device 194 may be referred to as a self-luminous display device.

[0070] The display device displays images or information through multiple pixels. The display panel includes multiple pixels, each pixel displays its own color, and the colors displayed by multiple pixels are combined to form the displayed image. Usually, each pixel includes three sub-pixels: red, green, and blue; each pixel displays color by adjusting the color ratio of the three sub-pixels of red, green, and blue, and finally all the pixels form the displayed image.

[0071] At present, the display devices that are widely used in electronic devices include liquid crystal display (LCD), organic light-emitting diode (OLED), etc. The light-emitting principle of LCD mainly relies on the backlight layer, which emits white light. There is a colored film on the backlight layer, and the color can be displayed after passing through the film. The liquid crystal layer between the backlight layer and the color film adjusts the ratio of red, blue and green to display different colors; OLED uses organic light-emitting materials, and each pixel can emit light, that is, it can emit light by itself, and it can light up without the backlight layer and liquid crystal layer like LCD. Therefore, it can be made thinner and lighter, with lower power consumption, and has a wide range of application scenarios, and can realize special functions such as under-screen fingerprints and flexible screens.

[0072] The main function of a display device is to effectively display information. With this as the center, 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 pursuit.

[0073] In addition to the quality of the display screen itself, different electronic device design strategies have also emerged for application scenarios. For example, when focusing on the function of privacy protection, a screen with an anti-peeping effect can be obtained by adding a film layer on the screen of the display device that can change the light transmittance with the viewing angle.

[0074] Nowadays, in the increasing number of display device usage scenarios, consumers have begun to pay attention to the damage of display devices to human eyes, and reducing the visual fatigue or discomfort caused by viewing the display screen with naked eyes has become one of the mainstream design directions of advanced display devices. This includes a series of display device designs such as low blue light, no flicker, low reflection, and anti-glare.

[0075] Among them, see Figure 3Glare refers to the dazzling effect caused by the screen of a display device reflecting ambient light through a mirror. For point light sources in daily life (such as lights and sunlight), their brightness is relatively high and is not suitable for direct viewing by the human eye. When a user uses a device with a display device, for example, taking a mobile phone as an example, when using a mobile phone in the sun, the mobile phone screen will reflect the sunlight, causing discomfort to the user's eyes and making it impossible for the user to see the information displayed on the mobile phone screen; or when using a mobile phone under light, the mobile phone screen will reflect the light, forming bright spots on the screen, affecting the user's normal use. Glare makes it more difficult for users to see the content displayed on the screen, and may even cause discomfort to the user's eyes and affect the user's vision. Therefore, anti-glare (AG) technology has become an important research direction in display technology.

[0076] As mentioned in the previous examples, glare is caused by the specular reflection of ambient light on the screen. Therefore, one idea to combat glare is to avoid specular reflection. For example, the roughness of the screen can be increased so that the light shining on the screen is less likely to form specular reflection, thus avoiding glare.

[0077] For example, see Figure 4 By "roughening" the cover or film layer on the screen surface to form an anti-glare structure, the reflective surface of the screen (flat mirror surface) is changed into a non-reflective matte surface (uneven rough surface), which has a lower reflectance ratio than ordinary screens. When ambient light shines on the screen, diffuse reflection will occur, avoiding mirror reflection, thus preventing glare.

[0078] The anti-glare ability of the 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: after the light is incident on the 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 an angle of 1° compared to 0° (normal viewing angle). For example: BRDF(0°)=a, BRDF(1°)=b, anti-glare value=(ab) / a.

[0079] The screen surface is usually a glass cover or a film structure, see Figure 5 , Figure 5 shows a schematic diagram of an anti-glare cover plate, Figure 5The anti-glare cover plate shown in figure a is a glass cover plate. An uneven microstructure morphology is formed on the surface of the glass cover plate by chemical etching or spraying of anti-glare materials, which is called an anti-glare structure. The uneven microstructure morphology usually appears in an irregular arrangement, so that the light incident on the surface of the cover plate is diffusely reflected to avoid glare.

[0080] Figure 5 The anti-glare cover shown in Figure a is a single glass cover. Figure 5 Figure b shows a schematic diagram of another anti-glare cover. Figure 5 The anti-glare cover plate shown in the middle diagram b is a composite cover plate. The composite cover plate 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 morphology is made on one side, for example, nano-imprinting or other methods can be used. The uneven microstructure morphology usually appears in an irregular arrangement, so that the light incident on the surface of the cover plate is diffusely reflected to avoid glare.

[0081] In some other possible implementations, the anti-glare of the display device can also be achieved by attaching an additional anti-glare film layer (such as a frosted texture protective film) to the screen surface. The principle of the anti-glare film layer is basically the same as that of the anti-glare cover plate, both of which prevent glare by forming an uneven micro-structure morphology on the surface. The difference between the two is that the anti-glare film is usually set on the outermost layer of the screen structure and can be attached and used as needed. In general, the anti-glare cover plate or anti-glare film layer can form an uneven micro-structure morphology on the surface to cause diffuse reflection of ambient light when it is incident, thereby avoiding glare.

[0082] According to technical requirements, the conditions for achieving anti-glare include the management of light emitted by the screen and the management of ambient light after being reflected by the screen. Since the main function of the anti-glare cover and anti-glare film is to scatter the light through the uneven microstructure morphology on the surface, so as to achieve the purpose of diffuse reflection when the ambient light is incident, however, this type of anti-glare structure will also scatter the light emitted by the display panel, causing uneven light crosstalk between different sub-pixels, resulting in visual flash point problems.

[0083] Flash point refers to the scattering of light emitted by a certain pixel on the surface of the anti-glare layer when the light emitted by the display panel passes through the anti-glare layer. The light scattered at different positions interferes with each other, which in turn produces the effect of colored dots or light and dark dots when viewed by the human eye, affecting the display effect.

[0084] like Figure 6As shown in Figure a, when the surface of the glass cover plate on the display device is smooth, that is, when there is no anti-glare layer, the light emitted by the display panel passes through the glass cover plate to reach the human eye. Generally speaking, the picture displayed in the display device can be regarded as composed of a large number of pixels. For example, an image with a resolution of 1920×1080 can be regarded as each row including 1920 pixels and each column including 1080 pixels. Each pixel includes three sub-pixels, namely red sub-pixel R, green sub-pixel G, and blue sub-pixel B. The three sub-pixels display red, green, and blue light respectively.

[0085] from Figure 6 As can be seen from Figure a, when the display device does not have an anti-glare layer, the light generated by the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B in each pixel of the display device has a consistent light transmittance through the glass cover plate, so that the amounts of light of different colors that finally reach the human eye are consistent. For example, when the light transmittance generated by the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B is consistent, the human eye sees normal white.

[0086] When the display device is provided with an anti-glare layer, Figure 6 As shown in Figure b, the light generated by the red sub-pixel R, green sub-pixel G, and blue sub-pixel B in each pixel unit of 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 that ultimately reach 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 white bright spots; less light passes through a certain area, resulting in dark spots; and more red light passes through a certain area, resulting in reddish bright spots. This phenomenon of mixed light and dark is called the flash point phenomenon. Figure 7 , Figure 7 A schematic diagram of screen display flash points is shown. 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.

[0087] To solve the flash point problem, the haze parameters are usually controlled during the preparation of the anti-glare layer of the screen. Figure 8 Haze describes one of the physical properties of the emitted light after the light passes through the medium and is scattered. It is defined as: the percentage of the transmitted light intensity that deviates from the incident light by more than 2.5° to the total transmitted light intensity. The greater the haze, the lower the clarity.

[0088] Controlling the haze parameters of the anti-glare layer can make the light emitted from the display panel have a uniform light mixing effect to a certain extent, and can reduce the flash point effect, however, this method will reduce the display clarity. For example, combined with Table 1, Table 1 shows the states of flash point and clarity at different haze levels.

[0089] Haze Low haze Medium haze High haze Flash point Clearly visible Clearly visible weak Clarity Slightly down Significant decline Severe decline

[0090] Table 1

[0091] 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 required to reduce the impact of the flash point, the clarity will be seriously reduced. 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 highlight obvious light crosstalk after being scattered by the anti-glare layer, 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 cause the clarity of the screen display to decrease, so the current anti-glare solution cannot take into account the requirements of low flash point and high clarity.

[0092] In order to improve the above-mentioned problems, 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. The light emitted by the display panel is scattered by the anti-glare layer and shows obvious light crosstalk, resulting in flash points on the screen. 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 suppressing the flash points by increasing the haze. Therefore, the clarity of the imaging can also be guaranteed.

[0093] like Fig. 9 As shown, Fig. 9 A schematic diagram of an optical module provided in an embodiment of the present application is shown. The optical module is applied to a display device, and the display device includes a display panel 220. The optical module 210 includes a light-uniform layer 211 and an anti-glare layer 212 arranged in sequence in the light-emitting direction of the display panel 220.

[0094] For example, the light-evening 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-evening layer 211 and the anti-glare layer 212, and do not mean that the display panel 220, the light-evening layer 211 and the anti-glare layer 212 must be adjacent. For example, for the display panel 220, the light-evening layer 211 and the anti-glare layer 212, the light-evening layer 211 can be in contact with the display panel 211, and the anti-glare layer 212 can be in contact with the light-evening layer 211; or, other layers (such as a polarizer) can be provided between the display panel 220 and the light-evening layer 211, and other layers can be provided between the light-evening layer 211 and the anti-glare layer 212.

[0095] See also Fig.10 , wherein the surface of the anti-glare layer 212 in the direction of light emission has an uneven anti-glare structure 2121 for scattering ambient light to avoid specular reflection of ambient light and generating glare; since the anti-glare layer 212 will also scatter the light emitted by the display panel 220 and cause screen flash points, the optical module 210 provided in the embodiment of the present application is provided with a uniform light layer 211, which is used to evenly mix the light emitted by the display panel 220 before entering the anti-glare layer 212, so that the scattered light type is more uniform and has no obvious directionality, so that when the light after uniform mixing passes through the anti-glare layer 212, flash points can be avoided.

[0096] like Fig.11 As shown, in the case where a uniform light layer is not provided, due to its relatively more prominent scattering directionality, the uniform light effect is poor. 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 the A1 area, the green light in the B1 area, and the blue light in the C1 area. Since the light emitted by the red sub-pixel, the green sub-pixel and the blue sub-pixel has not been uniformed and each has its own directionality, after such light is scattered by the anti-glare layer, the light emitted by different pixels will crosstalk, which will cause serious flash point problems.

[0097] 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, so that the scattered light type is more uniform. For example, the light emitted by the red sub-pixel R reaches the anti-glare layer A1 area and B1 area after being homogenized by the light-homogenizing layer 211; the light emitted by the green sub-pixel G reaches the anti-glare layer A1 area, B1 area and C1 area after being homogenized by the light-homogenizing layer 211; the light emitted by the blue sub-pixel B reaches the anti-glare layer B1 area and C1 area after being homogenized by the light-homogenizing layer 211. 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 light after homogenization.

[0098] In the above example, the flash point is caused by crosstalk between different colored lights 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. Fig.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 the scattering has no obvious directionality, crosstalk will occur among lights of different colors after being scattered in the anti-glare layer, resulting in screen flashes.

[0099] See also Fig.12 In the solution provided in the embodiment of the present application, a light-homogenizing layer 211 is arranged before the anti-glare layer 212. The light-homogenizing layer 211 can perform light-homogenizing processing on the light emitted by the display panel 220, so that the light emitted by the display panel 220 has a more uniform light pattern before entering the anti-glare layer 212; for example, Fig.12 For example, 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-uniform layer, and the output light is similar to white light evenly mixed with red, green, and blue; in the case where the light-uniform layer 211 is provided, the light entering the A1 area of ​​the anti-glare layer 212 includes evenly mixed red, green, and blue light; the light entering the B1 area of ​​the anti-glare layer 212 also includes evenly mixed 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 multiple light rays after light uniformity are scattered. The scattered light is still a mixture of multiple light rays, so the generation of flash points can be suppressed.

[0100] For example, when the light-homogenizing layer is not provided, the green light is scattered by the anti-glare layer and crosstalks with the red light; however, when the light-homogenizing layer 211 is provided, the green light, red light and light of other colors scattered to the same position increase, and no obvious flash point problem occurs. Due to the existence of the light-homogenizing layer 211, the incident light has a larger emission range after passing through the light-homogenizing layer 211, and can present a more uniform light pattern, so that the light pattern after the light-homogenizing no longer has obvious directionality within a larger angle, which makes the scattering effect of the anti-glare layer 212 unable to cause obvious light crosstalk, and can better suppress screen flash points.

[0101] In order to ensure that the light can be evenly mixed before entering the anti-glare layer 212, the uniform light layer 211 provided in the embodiment of the present application generates an outgoing light intensity distribution when the collimated light is vertically incident to meet the requirement that the light intensity attenuation within the set outgoing angle range is less than or equal to the threshold. Fig.13 , Fig.13 A schematic diagram of the light intensity distribution of the outgoing light from the light homogenizing layer provided in an embodiment of the present application is shown. The outgoing light intensity distribution generated by the collimated light vertically incident on the light homogenizing layer requires that the light intensity attenuation within the angle range of X is less than or equal to Y.

[0102] 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 the output angle of (-2° to +2°) to (-60° to +60°), and 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.

[0103] like Fig.14 As shown, Fig.14 The figure shows the comparison of the outgoing light intensity between the ordinary film layer and the uniform light layer provided in the embodiment of the present application. Fig.14 As can be seen in Figure a, the light emitted from the ordinary film layer has obvious directionality: that is, the light intensity of the emitted light is concentrated near the incident direction (the emission angle is 0), or the light intensity of the emitted light has a significantly higher peak in the incident direction, and the light spot range of the emitted light is small. Fig.14 As shown in Figure b, the uniform light layer provided in the embodiment of the present application has an obvious uniform light effect, a large emission angle, and a small light intensity attenuation. A high light intensity can be maintained within a larger emission angle, and the light spot range of the emitted light is larger. In this way, the light spots of different colors of light emitted by different sub-pixels of the display panel will cross after passing through the uniform light layer. Different light rays can be evenly mixed without obvious directionality. The light after even mixing can suppress the generation of screen flash points when passing through the anti-glare layer.

[0104] See also Fig.15 , Fig.15 Schematic diagram of the light-dodging layer is shown. In the embodiment of the present application, Fig.15 The cross-sectional view of the light-dodging layer in the normal direction, the light-dodging layer 211 includes a filling layer 2112 and a grating 2111 embedded in the filling layer 2112, wherein the filling layer 2112 can be made of a resin material, the filling layer 2112 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 the embodiment of the present application, the arrangement period of the columnar structure 2111a is defined as the center distance between two adjacent columnar structures 2111a, denoted as P; the characteristic size of the columnar structure 2111a is denoted as D, and the value range of D is 1μm to 25μm. The arrangement period of the columnar structure 2111a and the characteristic size of the columnar structure 2111a satisfy: 3D≥P>D. Exemplarily, 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.

[0105] 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-distributing layer 211. Fig.15 , the thickness of the light-homogenizing layer 211 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. Exemplarily, the refractive index of the grating 2111 is n1, the refractive index of the filling layer 2112 is n2, and the refractive index of the grating 2111 and the refractive index of the filling layer 2112 satisfy: |n1-n2|>0.005.

[0106] 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, in actual use, the grating 2111 (or the first surface 2112a of the filling layer 2112) of the uniform light layer 211 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.

[0107] When the height of the columnar structure 2111a is equal to the thickness of the filling layer 2112, see Fig.16 , Fig.16 This 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.

[0108] In a 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, and accordingly, the height of the columnar structure 2111 a in the grating 2111 is less than or equal to 150 μm.

[0109] Above Fig.15 and Fig.16 In the light homogenizing layer 211 shown, the multiple columnar structures 2111a of the grating 2111 have the same size and height. In some other possible implementations, for example, in combination with Fig.17 , the heights of the multiple columnar structures 2111a of the grating 2111 can be different. Fig.17 Figures a, b and c show schematic diagrams of several different light-homogenizing layers 211. The columnar structures 2111a of the grating 2111 may have different heights, and the columnar structures 2111a of different heights are arranged in a periodic manner. In this case, the plurality of columnar structures 2111a of different heights may also be arranged in a periodic manner as a whole. Here, the arrangement period of the plurality of columnar structures 2111a of 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 the plurality of columnar structures 2111a arranged in a periodic manner. For example, Fig.17 Taking Figure b as an example, four columnar structures 2111a with different heights are arranged periodically, so T=4P.

[0110] In addition, the sizes of the plurality of columnar structures 2111a of the grating 2111 may be different, see Fig.18 , Fig.18 FIG. 4 shows a cross-sectional view of the light-dotting layer in a direction perpendicular to the normal line. Fig.18 As shown in Figure a, Fig.18 Figure a shows a schematic diagram of a light homogenization layer 211. Fig.18In the light-homogenizing layer 211 shown in FIG. a, the columnar structures 2111a of the grating 2111 are arranged orthogonally in a cross, and the characteristic dimensions of the columnar structures 2111a are the same. Fig.18 Based on Figure a, Fig.18 FIG. b shows another schematic diagram of a light-homogenizing layer 211. Fig.18 In the uniform light layer 211 shown in FIG. b, the grating 2111 includes a columnar structure 2111a and a columnar structure 2111A with different characteristic sizes, which are still arranged in a cross-orthogonal manner. Among them, the characteristic size 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 the columnar structure 2111A, and at least one columnar structure 2111a can be arranged at equal intervals between any two columnar structures 2111A. The arrangement period P between the columnar structures 2111A and the columnar structures 2111a satisfies: 3D≥P>D, where D can be the average value of the characteristic dimensions of the columnar structures 2111A and the columnar structures 2111a.

[0111] See also Fig.19 , Fig.19 is a cross-sectional view of the light-homogenizing layer in the direction perpendicular to the normal line, such as Fig.19 As shown in Figure a, Fig.19 Figure a shows a schematic diagram of a light homogenization layer 211. Fig.19 In the uniform light layer 211 shown in Figure a, the columnar structures of the grating 2111 are arranged in a regular hexagonal shape, and the characteristic dimensions of the columnar structures are the same. Fig.19 Based on Figure a, Fig.19 FIG. b shows another schematic diagram of a light-homogenizing layer 211. Fig.19 In the uniform light layer 211 shown in Figure b, the characteristic size of the columnar structure of the grating 2111 is different, and it is still arranged in a regular hexagon. Among them, the characteristic size 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 the columnar structure 2111A, and at least one columnar structure 2111a can be arranged at equal intervals between any two columnar structures 2111A. The arrangement period P between the columnar structures 2111A and the columnar structures 2111a satisfies: 3D≥P>D, where D can be the average value of the characteristic dimensions of the columnar structures 2111A and the columnar structures 2111a.

[0112] 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.

[0113] In addition, in some other possible implementations, the columnar structure of the grating 2111 may also be arranged non-periodically. Fig.15 Based on Fig. 20 , Fig. 20 A schematic diagram of another light-dodging layer 211 is shown. The columnar structure of the grating 2111 can be arranged non-periodically, but it is still necessary to satisfy that the thickness of the light-dodging layer 211 is less than or equal to 150μm, and the height of the columnar structure of the grating 2111 is less than or equal to the thickness of the light-dodging layer 211, the characteristic size of the columnar structure is 1μm to 25μm, and the distance between two adjacent columnar structures and the characteristic size of the columnar structure satisfy: 3D≥P>D.

[0114] For example, the light type 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 homogenizing layer 211 including a periodic grating structure has better controllability of homogenization. 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.

[0115] The above example is only an illustrative description of the structure of the light homogenizing layer 211. The light homogenizing layer 211 may also include other structures as long as the light intensity distribution generated by the light homogenizing layer 211 when the collimated light is vertically incident satisfies that the light intensity attenuation within the set emission angle range is less than or equal to the threshold.

[0116] The anti-glare layer 212 includes an anti-glare structure 2121, such as Fig.21 As shown, the anti-glare structure 2121 includes an undulating microstructure morphology formed on the surface of the anti-glare layer 212. The undulating microstructure morphology is usually arranged in an irregular distribution, but in some other possible implementations, the undulating microstructure morphology can also be arranged in a regular distribution. When ambient light irradiates such a microstructure morphology, it will scatter in different directions to avoid glare. The roughness range of the anti-glare layer 212 is 0.20-0.35 μm, and the haze range of the anti-glare layer 212 is 0-35%, for example, 20%. A smaller haze range has less effect on the clarity of the display imaging. The anti-glare value of the anti-glare layer 212 is less than or equal to 10%. Generally speaking, the thickness of the anti-glare layer 212 is less than or equal to 1 mm.

[0117] The light emitted by the display panel 220 is evenly mixed after passing through the light-uniforming 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, it is scattered based on the evenly mixed light. Therefore, the crosstalk of light of different colors that causes 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 anti-glare layer 212 has a low haze and 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 a high clarity.

[0118] 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 an anti-glare structure 2121 .

[0119] 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. In this way, 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.

[0120] In another possible implementation, the anti-glare layer 212 may also be a film layer structure, the surface microstructure morphology of the anti-glare film layer may be produced by embossing, and the anti-glare film layer may be pasted on the screen for use as required.

[0121] Based on the optical module provided in the embodiment of the present application, the embodiment of the present application also provides a display device, see Fig. 22 , Fig. 22 A schematic structural diagram of a display device 200 provided in an embodiment of the present application is shown.

[0122] 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, wherein the optical module 210 includes a light-dodging layer 211 and an anti-glare layer 212, wherein 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. Different layer structures of the display device 200 are fixedly bonded 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.

[0123] 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., which is not introduced in detail in this embodiment. For example, the display panel 220 provided in the embodiment of the present application can be an LCD display panel, or can also be an OLED display panel, or can also be a display panel of other structures.

[0124] The light-homogenizing layer 211 is a resin material with a grating inside. Exemplarily, the light-homogenizing layer 211 includes a grating and a filling layer, and the refractive index of the grating is different from the refractive index of the filling layer. The light-homogenizing layer generates an outgoing light intensity distribution when collimated light is vertically incident, and the light intensity attenuation within the set outgoing angle range is less than a threshold value. For example, within the range of (-2° to +2°), or even within the range of (-60° to +60°), the light intensity attenuation of the outgoing light is less than or equal to 30%, so that the light emitted by the display panel 220 can be evenly mixed.

[0125] The polarizer 230 may be a circular polarizer (applied to an OLED display structure) or a linear polarizer (applied to an LCD display structure).

[0126] The anti-glare layer 212 is located above the polarizer 230. 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 microstructure morphologies can diffusely reflect the incident ambient light to avoid glare on the screen. Since a uniform light layer 211 is provided under the anti-glare layer 212, the light emitted by the display panel 220 is uniformly mixed by the uniform light layer 211 before entering the anti-glare layer 212. In this way, when the uniformly mixed light is scattered by the anti-glare layer 212, crosstalk between different light rays can be avoided to cause screen flashes.

[0127] Above Fig. 22 In the example shown, the light homogenizing layer 212 is disposed below the polarizer 230. In another possible implementation, see Fig.23 As shown, the embodiment of the present application further provides another display device 200 , which is different from the display device provided in the aforementioned example in that the light-homogenizing layer 211 can also be disposed above the polarizer 230 .

[0128] 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, wherein the optical module 210 includes a light-dodging layer 211 and an anti-glare layer 212, wherein 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. Different layer structures of the display device 200 are fixedly bonded 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.

[0129] Since the structure and principle of suppressing glare and flash points 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.

[0130] In the above example, the display panel 200 is integrated with a touch element. In some other possible implementations, the touch element cannot be integrated into the display panel. For example, the embodiment of the present application further provides a display device, such as Fig.24 As shown, the display device 200 includes a display panel 220, a light-evening layer 211, a touch circuit layer 240, a polarizer 230 and an anti-glare layer 212. An adhesive layer is arranged between different layer structures, and they are fixedly bonded by the adhesive layer. For example, an adhesive layer 221d is arranged between the anti-glare layer 212 and the polarizer 230, an adhesive layer 221c is arranged between the polarizer 230 and the touch circuit layer 240, an adhesive layer 221b is arranged between the touch circuit layer 240 and the light-evening layer 211, and an adhesive layer 221a is arranged between the light-evening layer 211 and the display panel 220.

[0131] The display device 200 provided in the embodiment of the present application includes a light-uniform layer 211 and an anti-glare layer 212, wherein the anti-glare layer 211 includes an anti-glare structure 2121, and the anti-glare structure 2121 refers to the uneven microstructure morphology on the surface of the anti-glare layer 212, and these microstructure morphologies can make the incident ambient light diffusely reflected to avoid glare on the screen. The light-uniform layer 211 is used to evenly mix the light emitted by the display panel 220, so that when the evenly mixed light enters the anti-glare layer 212 and is scattered by the anti-glare layer 212, crosstalk between different light rays can be avoided to cause screen flash points.

[0132] In the above example, the display device includes a polarizer. With the development of display technology, the industry has developed color filter on encapsulation (COE) technology in recent years, also known as polarizer-free technology. COE technology is gradually favored by the industry. The color filter layer is integrated by COE to achieve the purpose of depolarizing film (POL-Less), which is conducive to reducing the overall thickness of the display device and improving the brightness of the display device.

[0133] Based on this, the present application also provides another display device, see Fig.25 , Fig.25 A schematic structural diagram of a display device 200 provided in an embodiment of the present application is shown.

[0134] The display device 200 includes a display panel 220, a light-dodging layer 211 and an anti-glare layer 212. An adhesive layer is arranged between different layer structures to fix and bond them together. For example, an adhesive layer 221b is arranged between the anti-glare layer 212 and the light-dodging layer 211, and an adhesive layer 221a is arranged between the light-dodging layer 211 and the display panel 220.

[0135] 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.

[0136] The principle of suppressing glare and flash points of the display device 200 provided in the embodiment of the present application is basically the same as that in the above-mentioned example. 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, wherein the anti-glare layer 212 includes an anti-glare structure 2121, and the anti-glare structure 2121 refers to the uneven micro-structure morphology on the surface of the anti-glare layer 212. These micro-structure morphologies can make the ambient light incident on the anti-glare layer 212 diffusely reflect, thereby avoiding glare on the screen. The light-uniform layer 211 is used to evenly mix the light emitted by the display panel 220, so that when the light after even mixing is incident on the anti-glare layer 212 and scattered by the anti-glare layer 212, crosstalk between different light rays can be avoided to cause flash points on the screen.

[0137] The present application also provides a display device 300. Fig.26 The display device 300 includes a housing 310 and the display device 200 provided in the above example. The display device 200 is mounted on the housing 310 . The housing 310 is used to support and protect the display device 200 .

[0138] Exemplarily, the display device 300 may be any device having a display function, such as a monitor, a television, etc.

[0139] The present application also provides an electronic device, which may be as described above. Figure 1 The electronic device shown includes a processor and the display device provided in the above example, and the display device is connected to the processor for displaying information.

[0140] Exemplarily, the electronic device may be a mobile phone, a tablet computer, a personal computer, a television, a smart wearable device or any other electronic device with a display function.

[0141] Those skilled in the art should be aware that in one or more of the above examples, the functions described in this application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can 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 media that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a general or special-purpose computer can access.

[0142] Finally, it should be noted that the above is only a specific implementation 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 included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope 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-dodging layer includes a filling layer and a grating embedded between the filling layers, the refractive index of the grating is different from the refractive index of the filling layer, the grating includes a plurality of columnar structures, the center distance between any two adjacent columnar structures among the plurality of columnar structures and the characteristic size of the columnar structures satisfy: 3D ≥ P > D, wherein D is the characteristic size of the columnar structure, and P is the center distance between any two adjacent columnar structures; the output light intensity distribution generated by the light-dodging layer when the collimated light is vertically incident satisfies that the light intensity attenuation within the set output 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 to .

5. The optical module according to any one of claims 1 to 4, 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.

6. The optical module according to any one of claims 1 to 4, characterized in that: The filling layer covers a side of the grating away from the display panel.

7. The optical module according to claim 6, 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.

8. The optical module according to any one of claims 1 to 7, characterized in that: The thickness of the light-dotting layer is less than or equal to 150 μm.

9. The optical module according to claim 2, characterized in that: The second threshold is less than or equal to 35%.

10. The optical module according to any one of claims 1 to 9, characterized in that: The anti-glare value of the anti-glare layer is less than or equal to 10%.

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

12. 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 11, 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.

13. The display device according to claim 12, 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.

14. The display device according to claim 12 or 13, characterized in that: The display device further includes a touch control circuit, and the touch control circuit is integrated on the display panel.

15. A display device, characterized in that: The display device includes a display panel and an optical module as described in any one of claims 1 to 11, the optical module includes 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 in sequence in the light-emitting direction of the display panel.

16. A display device, characterized in that: The invention comprises a housing and a display device as claimed in any one of claims 12 to 15, wherein the display device is mounted on the housing, and the housing is used for supporting and protecting the display device.

17. An electronic device, characterized in that: The electronic device comprises a processor and a display device as described in any one of claims 12 to 15, and the display device is electrically connected to the processor.

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