Anti-impact and anti-dazzle integrated laminated display screen

Abstract

The invention relates to an anti-impact and anti-dazzle integrated laminated display screen, and relates to the technical field of touch display screens, the display screen comprises an anti-dazzle layer, a flexible energy absorption layer and a touch display layer which are stacked in sequence; anti-reflection textures are arranged on the side, away from the flexible energy absorption layer, of the anti-dazzle layer and comprise a plurality of bosses, the cross sectional areas of the bosses are gradually decreased in the direction away from the flexible energy absorption layer, the bosses are arranged in a matrix mode, and the distance between every two adjacent bosses is smaller than the wavelength of visible light. According to the invention, the display screen has more excellent impact resistance and anti-dazzling capability at the same time, so that the display screen can meet comprehensive use requirements in a complex environment.

Description

Technical Field

[0001] This application relates to the technical field of touch displays, and in particular to a laminated display that integrates shock resistance and anti-glare. Background Technology

[0002] In operating rooms, emergency rooms, or outdoor industrial sites, display devices often need to be moved or transported frequently, and the lighting conditions in the working environment are extremely complex. Therefore, such devices place extremely high demands on both the mechanical strength and optical visibility of the display screen.

[0003] Currently, in order to meet the design requirements of the aforementioned displays, existing technologies typically employ separate physical solutions to address the issues of mechanical impact and optical visibility.

[0004] In terms of impact resistance, existing solutions typically involve adding a thick rubber buffer bezel or metal protective shell to the outside of the display, or using expensive sapphire glass as a cover to reduce damage to the internal display panel from drops or collisions through physical barriers.

[0005] In terms of optical visibility, anti-glare design is usually implemented. Existing technology generally uses an anti-glare coating sprayed on the surface of the cover glass. The rough surface of the anti-glare coating achieves diffuse reflection and anti-glare, scattering the point light source into a surface light source, thereby reducing the interference of specular reflection on the human eye.

[0006] Regarding the aforementioned technologies, while existing anti-glare coatings can reduce reflections, their diffuse reflection principle inevitably causes scattering of light emitted from the display panel inside the screen, resulting in a hazy display image. This reduces image contrast and clarity. Furthermore, relying on a thick external bezel for impact resistance increases the device's size and weight, hindering portability.

[0007] Therefore, existing displays use independent physical solutions to address the issues of mechanical impact and optical visibility separately. This results in existing displays having the technical defects caused by the two independent solutions mentioned above, making it difficult for them to meet the comprehensive usage requirements in complex environments. Summary of the Invention

[0008] This application provides a laminated display screen that integrates impact resistance and anti-glare, with the aim of improving the layer structure of the display screen so that the display screen has both better impact resistance and anti-glare capability, thereby enabling the display screen to meet the comprehensive use needs in complex environments.

[0009] The laminated display screen that integrates impact resistance and anti-glare features provided in this application adopts the following technical solution: A laminated display screen integrating impact resistance and anti-glare features includes: an anti-glare layer, a flexible energy-absorbing layer, and a touch display layer stacked sequentially; the anti-glare layer has an anti-reflective texture on the side away from the flexible energy-absorbing layer, the anti-reflective texture including a plurality of protrusions, the cross-sectional area of ​​the protrusions gradually decreasing along the direction away from the flexible energy-absorbing layer, the plurality of protrusions being arranged in a matrix, and the distance between two adjacent protrusions being less than the wavelength of visible light.

[0010] By adopting the above technical solution, the anti-glare layer, flexible energy-absorbing layer, and touch display layer are bonded together to form a tightly integrated display screen through a lamination process. The high light transmittance of the anti-glare layer and flexible energy-absorbing layer ensures that the light emitted from the touch display layer can pass through without damage, thus enabling the display screen to possess the basic functions of high-definition display and touch interaction.

[0011] Building upon this, an anti-glare layer is located on the outermost layer of the display, resisting scratches from external hard objects and initial impacts, thus providing the first level of protection for the core touchscreen display. A flexible energy-absorbing layer lies between the anti-glare layer and the touchscreen display layer. When the display is impacted, the flexible energy-absorbing layer utilizes its high damping properties and viscoelasticity to efficiently convert the mechanical kinetic energy transmitted by the impact into heat energy through internal friction and deformation of the molecular chains, further reducing the energy density of the shock wave. This provides the second level of protection for the touchscreen display. Therefore, the synergistic effect of the anti-glare layer and the flexible energy-absorbing layer effectively mitigates external impact forces, protecting the touchscreen display layer and improving the overall impact resistance and reliability of the display.

[0012] More importantly, an anti-reflective texture is incorporated on the outer side of the anti-glare layer. The anti-reflective texture structure is designed such that the distance between two adjacent protrusions (i.e., the anti-reflective texture period) is less than the wavelength of visible light, and the cross-sectional area of ​​the protrusions gradually decreases along the direction away from the flexible energy-absorbing layer. This means that as the anti-glare layer extends from the air side into its interior, the proportion of solid medium within a unit horizontal cross-section gradually increases, while the proportion of air gradually decreases. Due to the difference in refractive index between air and the solid material of the anti-glare layer, this continuous change in material duty cycle results in a continuous gradient rather than abrupt change in the equivalent refractive index perceived by incident light at the interface between air and the anti-glare layer. This continuous gradient refractive index simulates refractive index matching impedance, effectively suppressing Fresnel reflection at the interface between different media, thus physically reducing specular reflectivity to an extremely low level. Therefore, with the anti-reflective texture design, this structure eliminates ambient light glare interference while reducing the impact on the light emitted from the touch display layer, thereby ensuring the transparency and clarity of the displayed image.

[0013] This design gives the display screen superior impact resistance and anti-glare capabilities, enabling it to meet the comprehensive usage needs in complex environments.

[0014] Optionally, the distance between two adjacent protrusions is 180 nm to 250 nm.

[0015] By adopting the above technical solution, the distance between adjacent protrusions is strictly limited to the range of 180nm to 250nm. Since the wavelength range of visible light is approximately 380nm to 780nm, this size design ensures that the distance between adjacent protrusions is significantly smaller than the shortest wavelength of visible light.

[0016] Based on the principles of physical optics, when the period of the anti-reflective texture structure is much smaller than the wavelength of the incident light, the anti-reflective texture structure enters the subwavelength region, which can completely suppress all higher-order diffraction light except for the zeroth-order transmitted light, thereby eliminating the rainbow pattern or stray color light interference that traditional periodic structures often produce due to diffraction effects.

[0017] At this size, the effective medium theory applies. The incident light wave cannot optically distinguish the discrete contours of individual protrusions on the anti-reflective texture. Instead, the entire anti-reflective texture is regarded as a gradient medium layer with a refractive index that continuously increases from air (n≈1) to the glass substrate (n≈1.5). This deep subwavelength size control ensures that the display achieves optimal impedance matching and anti-reflection effects across the entire visible light spectrum, presenting a pure, color-shift-free optical invisibility visual experience.

[0018] Therefore, the periodic selection of anti-reflective textures can effectively avoid diffraction and dispersion problems caused by the periodicity of the anti-reflective texture structure while ensuring efficient anti-reflection effects over a wide spectral range, thereby ensuring the color reproduction and purity of the displayed image.

[0019] Optionally, a nano-protective film is deposited on the surface of the anti-glare layer where the anti-reflective texture is provided.

[0020] By employing the above technical solution, the anti-reflective texture, being a micro-nano fine structure, has relatively weak mechanical strength. By depositing a nano-protective film on its surface, the anti-reflective texture can be coated and reinforced, thereby protecting it and improving its long-term optical stability and mechanical durability.

[0021] Optionally, the flexible energy-absorbing layer is formed by curing transparent polyurethane acrylate resin or transparent optical adhesive.

[0022] By employing the above technical solutions, the high light transmittance of transparent polyurethane acrylate resin or transparent optical adhesive reduces the impact of the flexible energy-absorbing layer on the display image quality. More importantly, the significant viscoelasticity of these materials after curing means that when a shock wave reaches the flexible energy-absorbing layer made of such materials, the highly damped molecular chains undergo intense internal friction and deformation, efficiently converting the transmitted mechanical kinetic energy into heat energy for dissipation. This significantly reduces the energy density of the shock wave, preventing stress concentration between the inner layers of the display and thus preventing peeling or brittle fracture, further improving the display's impact resistance.

[0023] Optionally, the touch display layer includes a flexible display layer and a touch sensing layer disposed on the flexible display layer; the touch sensing layer is stacked between the flexible display layer and the flexible energy-absorbing layer, or the flexible display layer is stacked between the touch sensing layer and the flexible energy-absorbing layer.

[0024] By adopting the above technical solution and using a flexible display layer as the display unit, the flexible display layer can actively avoid and resolve the impact force when the residual impact force weakened by the flexible energy-absorbing layer is transmitted to the flexible display layer, rather than undergoing brittle fracture, through a small amount of elastic depression or bending deformation.

[0025] Therefore, the display screen improves its overall shatter resistance through a layered design consisting of a hard outer layer, a viscoelastic dissipation middle layer, and a flexible bottom layer.

[0026] Optionally, the flexible display layer may be a flexible AMOLED display module or a flexible Mini-LED backlight module.

[0027] By adopting the above technical solutions, flexible AMOLED display modules or flexible Mini-LED backlight modules not only possess excellent flexibility to adapt to the aforementioned impact resistance mechanism, but also exhibit high contrast and wide color gamut display characteristics. This complements the high-definition and transparent optical characteristics brought by the surface anti-glare layer, jointly ensuring that the display screen can still present vivid colors and rich details in complex lighting environments.

[0028] Optionally, it also includes an active conditioning film layer, which includes a base film stacked between the anti-glare layer and the flexible energy-absorbing layer; light-absorbing particles are dispersed inside the base film, which are used to absorb infrared light and convert it into heat energy, and a thermosensitive phase change film is coated on the side of the base film facing the anti-glare layer.

[0029] By adopting the above technical solution, an active adjustment film layer is introduced into the layered structure of the display screen. Under the design of the active adjustment film layer, the infrared light energy is captured by light-absorbing particles and converted into heat energy, passively driving the temperature rise of the thermosensitive phase change film. The thermosensitive phase change film possesses the characteristic of undergoing a metal-insulator (MIT) phase transition at a specific temperature. When the ambient light is too strong, causing the light-absorbing particles to absorb light and heat up, the light-absorbing particles can raise the temperature of the thermosensitive phase change film. When the temperature of the thermosensitive phase change film reaches the phase transition point, the film undergoes a phase transition, and its optical properties change from high transmittance to high reflectance or light shielding. This allows for adaptive adjustment of transmittance or overheat protection based on the ambient light intensity, adding intelligent photothermal management functionality to the display screen.

[0030] Optionally, the light-absorbing particles are antimony-doped tin oxide nanoparticles or indium tin oxide nanoparticles; the thermosensitive phase change film is a vanadium dioxide film or a tungsten-doped vanadium dioxide film.

[0031] By adopting the above technical solution, the thermosensitive phase change film uses vanadium dioxide or its dopants as the phase change material. Utilizing its reversible phase change characteristics near room temperature or a specific design temperature, it achieves rapid switching between light transmission and reflection states. Combined with the highly efficient photothermal conversion capabilities of ATO or ITO nanoparticles, the response sensitivity of the thermosensitive phase change film can be improved, enabling the display screen to quickly adjust its optical state under different lighting conditions. For example, it can automatically reduce transmittance under strong light to enhance contrast or achieve privacy protection.

[0032] Optionally, the active conditioning film layer further includes an electric actuator, which includes a transparent electrode and a main control cable unit electrically connected to the transparent electrode; the transparent electrode is disposed on the surface of the base film, and the thermosensitive phase change film covers the transparent electrode.

[0033] By adopting the above technical solution, the active regulating membrane layer, through the structural design of the electric actuator, enables the active regulating membrane layer to have the ability of electronically controlled active regulation.

[0034] Specifically, after assembling the display screen onto the corresponding device, the main control cable unit is connected to the corresponding display screen controller. At this point, the user interacts with the display screen, and the display screen controller receives the corresponding interaction signals. Based on this, upon receiving a user command, the display screen controller sends a signal, causing the main control cable unit to output a high-frequency driving voltage to the transparent electrode. Utilizing the Joule heating principle, the transparent electrode heats up to actively drive the thermosensitive phase change film to its phase change point. This allows the display screen to switch between a high-definition full-view mode and a privacy narrow-view mode, enhancing the display screen's privacy protection capabilities in different environments.

[0035] This means that the anti-peeking mode and high-definition mode of the display screen no longer solely rely on passive triggering by the environment, but can be switched by the user at any time through electronic instructions.

[0036] Optionally, it further includes a sensing feedback layer. The sensing feedback layer includes a transparent flexible substrate, and the transparent flexible substrate is laminated between the active adjustment film layer and the flexible energy absorption layer. A piezoelectric induction film is adhered to the transparent flexible substrate; the sensing feedback layer further includes a sensing cable unit. One end of the sensing cable unit is electrically connected to the piezoelectric induction film, and the other end is electrically connected to the main control cable unit.

[0037] By adopting the above technical solution, a sensing feedback layer is introduced into the hierarchical structure of the display screen, and the piezoelectric induction film is used to instantly convert the mechanical impact received into an electrical signal. On this basis, the electrical signal is directly fed back to the main control cable unit through the sensing cable unit, so as to form a linkage with the active adjustment film layer.

[0038] Specifically, when the display screen is subjected to a severe impact, the piezoelectric induction film on the sensing feedback layer can detect the impact. At this time, the piezoelectric induction film generates an electrical signal and transports it to the main control cable unit through the sensing cable unit, and then transports it to the controller inside the display screen. At this time, the controller actively triggers the phase change of the active adjustment film layer according to the obtained electrical signal. At this time, by using the characteristics that the phase change material absorbs a large amount of latent heat of phase change during the lattice structure transformation process, and the modulus mutation caused by the phase change, it can assist in absorbing the impact energy and changing the interfacial mechanical transmission characteristics. This design enables the display screen to further dissipate energy by actively changing the physical state of the internal materials when facing extreme impacts, so as to achieve the function of active protection.

[0039] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the cooperative design of the anti-glare layer, flexible energy absorption layer and touch display layer, the present application enables the display screen to simultaneously have more excellent impact resistance and anti-glare ability while realizing the basic functions of the display screen, so that the display screen can meet the comprehensive use requirements in complex environments.

[0040] 2. This application constructs a photothermal response mechanism by actively adjusting the film layer and utilizing the synergistic effect of light-absorbing particles and a thermosensitive phase change film. On one hand, this structure can passively capture ambient infrared light energy and convert it into heat energy, driving the thermosensitive phase change film to undergo a metal-insulator phase transition, thereby adaptively reducing light transmittance in strong light environments to protect the internal touch display layer. On the other hand, combined with the design of an electric actuator, users can actively trigger the thermosensitive phase change film to undergo a phase transition through electronic commands. Utilizing the abrupt change in optical properties after the phase transition, the display can instantly switch between high-definition mode and privacy protection mode. This design not only endows the display with intelligent photothermal management and privacy protection functions, but also, with the actively adjusting film layer serving as an intermediate reinforcement layer, further enriches the interface complexity of the display structure, utilizing the reflection and attenuation effects of multiple heterogeneous interfaces to assist in dissipating impact energy.

[0041] 3. This application constructs a closed-loop active protection system through the combined design of a sensing feedback layer and an active adjustment film layer. This closed-loop active protection system utilizes the piezoelectric sensing film in the sensing feedback layer to monitor mechanical impact signals in real time. Through the linkage between the sensing cabling unit and the main control cabling unit, a phase change is triggered in the active adjustment film layer the instant a severe impact is detected. This mechanism leverages the viscoelastic hysteresis effect of the flexible energy-absorbing layer to provide a response window for the closed-loop active protection system, allowing the phase change material to undergo a phase change before the impact destructive force reaches its peak. The large amount of latent heat absorbed during the phase change and the accompanying modulus shift actively intervene and dissipate the impact energy. This transforms the display's impact resistance mechanism from conventional passive defense to active protection, thereby improving the display's survival rate and interface bonding stability under extreme drop or collision conditions. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the display screen in Embodiment 1 of this application.

[0043] Figure 2 This is an enlarged structural schematic diagram of the anti-reflective texture on the anti-glare layer of Embodiment 1 of this application.

[0044] Figure 3 This is a cross-sectional view of the boss on the anti-glare layer in Embodiment 2 of this application.

[0045] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of section A.

[0046] Figure 5 This is a schematic diagram of the overall structure of the display screen in Embodiment 3 of this application.

[0047] Figure 6 This is a schematic diagram of the overall structure of the active regulating film layer in Embodiment 3 of this application.

[0048] Figure 7 This is a schematic diagram of the overall structure of the display screen in Embodiment 4 of this application.

[0049] In the diagram, 1. Anti-glare layer; 11. Anti-reflective texture; 111. Boss; 12. Nano protective film; 121. Hard reinforcement layer; 122. Anti-fouling and lubricating layer; 2. Flexible energy absorption layer; 3. Touch display layer; 31. Flexible display layer; 32. Touch sensing layer; 4. Active adjustment film layer; 41. Base film; 42. Light-absorbing particles; 43. Thermosensitive phase change film; 44. Electro-actuator; 441. Transparent electrode; 442. Main control cable unit; 5. Sensing feedback layer; 51. Transparent flexible substrate; 52. Piezoelectric sensing film; 53. Sensing cable unit. Detailed Implementation

[0050] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail below.

[0051] Example 1: A laminated display screen integrating impact resistance and anti-glare, referring to... Figure 1 It includes an anti-glare layer 1, a flexible energy-absorbing layer 2, and a touch display layer 3, which are stacked in sequence.

[0052] Reference Figure 1 The anti-glare layer 1 is made of a glass substrate. Specifically, the glass substrate is made of aluminosilicate glass or lithium aluminosilicate glass with a thickness of 0.5mm-1.1mm. In this embodiment, the thickness of the glass substrate is preferably 0.7mm.

[0053] In this embodiment, when preparing the anti-glare layer 1, the aforementioned glass substrate is chemically tempered and then subjected to ion exchange in a high-temperature potassium salt bath, thereby forming a high compressive stress layer with a depth of approximately 30μm-50μm on the surface of the glass substrate. This high compressive stress layer can effectively resist surface scratches and improve the glass substrate's ability to withstand external impacts, thus forming a high-hardness physical protective structure on the outside of the anti-glare layer 1.

[0054] Reference Figure 1 and Figure 2 The anti-glare layer 1 has an anti-reflective texture 11 on the side opposite to the flexible energy-absorbing layer 2.

[0055] In this embodiment, when preparing the anti-glare layer 1, after processing a high compressive stress layer on the surface of the glass substrate, an anti-reflection texture 11 is formed on the surface of the glass substrate by nano-photolithography imprinting or reactive ion etching. The depth of the anti-reflection texture 11 is much smaller than the thickness of the high compressive stress layer on the anti-glare layer 1.

[0056] Reference Figure 2The anti-reflective texture 11 includes a number of protrusions 111 arranged in a matrix, and the distance between two adjacent protrusions 111 is less than the wavelength of visible light.

[0057] Specifically, the cross-sectional area of ​​the protrusion 111 gradually decreases away from the anti-glare layer 1 along its height direction, which makes the side of the protrusion 111 inclined. It can be frustum-shaped, conical, or pyramidal, and the distance between the central axes of two adjacent protrusions 111 is 180nm to 250nm, preferably 200nm. The height of the protrusion 111 is 120nm to 180nm, preferably 150nm.

[0058] It should be noted that the distance between the central axes of two adjacent protrusions 111 represents the period of the anti-reflective texture 11. Based on the above periodic design of the anti-reflective texture 11, the period of the anti-reflective texture 11 is smaller than the wavelength of visible light (380nm-780nm). This ensures that incident light does not perceive a sudden change in refractive index at the interface between air and the anti-glare layer 1, but rather perceives a continuous gradient change in refractive index (effective medium theory). This significantly reduces specular reflectivity using the principle of destructive interference, achieving an anti-glare effect while avoiding the image haze phenomenon caused by diffuse reflection in existing AG coatings, maintaining the transparency and clarity of the image.

[0059] Reference Figure 1 The flexible energy-absorbing layer 2 is formed by curing optically transparent polyurethane acrylate resin (OCR) or transparent optical adhesive (OCA).

[0060] In this embodiment, the thickness of the flexible energy-absorbing layer 2 is 0.15 mm to 0.3 mm, preferably 0.2 mm. The flexible energy-absorbing layer 2 is prepared by OCR. Since the transmittance of the OCR after curing is greater than 99% and it has significant viscoelastic characteristics, its loss factor is greater than 0.5 (test results at 25°C and 1 Hz).

[0061] Based on the material properties of the flexible energy-absorbing layer 2, when an external impact force passes through the anti-glare layer 1 and is transmitted to the flexible energy-absorbing layer 2, the resin molecular chains with high damping properties in the flexible energy-absorbing layer 2 will undergo severe internal friction and deformation, converting the transmitted mechanical kinetic energy into a small amount of heat energy for dissipation, thereby reducing the energy density of the shock wave and preventing interlayer peeling or structural rupture caused by stress concentration.

[0062] Reference Figure 1 The touch display layer 3 includes a flexible display layer 31 and a touch sensing layer 32 disposed on the flexible display layer 31.

[0063] In this embodiment, the touch sensing layer 32 is stacked between the flexible display layer 31 and the flexible energy absorbing layer 2, or the flexible display layer 31 is stacked between the touch sensing layer 32 and the flexible energy absorbing layer 2.

[0064] In this embodiment, the flexible display layer 31 adopts a flexible AMOLED display module or a Mini-LED backlight module based on a flexible substrate. Furthermore, the thickness of the flexible display layer 31 is 0.1 mm to 0.3 mm, preferably 0.2 mm.

[0065] In this embodiment, the touch sensing layer 32 adopts a capacitive touch sensor or a flexible touch sensor.

[0066] Based on the above-described structural design of the touch display layer 3, since a flexible display layer 31 is used as the display unit within the touch display layer 3, and because the flexible display layer 31 possesses excellent bending toughness, when the residual impact force weakened by the flexible energy-absorbing layer 2 is transmitted to the touch display layer 3, the flexible display layer 31 can avoid the impact force through slight elastic depression and bending, thereby improving the shatter resistance of the touch display layer 3. This further enhances the impact resistance of the display screen of this application.

[0067] In this embodiment, when manufacturing the display screen, the anti-glare layer 1, the flexible energy-absorbing layer 2, and the touch display layer 3 need to be placed in a vacuum full lamination machine for precise alignment and bonding in a vacuum environment. The trace amounts of air between the uncured flexible energy-absorbing layer 2 and the anti-glare layer 1, as well as between the uncured flexible energy-absorbing layer 2 and the touch display layer 3, are removed by vacuum pumping to ensure the formation of a bubble-free continuous dielectric layer. Finally, the flexible energy-absorbing layer 2 is completely cured by UV irradiation or heat baking to achieve integrated encapsulation of the three-layer structure.

[0068] The implementation principle of this application embodiment is as follows: When using the display screen, when ambient light shines on the anti-glare layer 1, since the period of the anti-reflection texture 11 is smaller than the wavelength of visible light, the refractive index of the incident light at the interface between the air and the anti-glare layer 1 changes in a continuous gradient, which effectively suppresses the abrupt reflection of light at the interface, and greatly reduces the specular reflectivity through destructive interference, thereby eliminating ambient light interference and realizing high-definition anti-glare display.

[0069] When the display screen is impacted, the first layer of high-hardness physical protection is provided by the anti-glare layer 1, resisting surface scratches and initial impact force. Subsequently, the impact energy is transferred to the flexible energy-absorbing layer 2. Utilizing the high damping characteristics of the flexible energy-absorbing layer 2, most of the mechanical kinetic energy is converted into heat energy and dissipated through the internal friction and deformation of its viscoelastic molecular chains, thus reducing stress. Finally, the residual stress is transmitted to the touch display layer 3, where the flexible display layer 31 utilizes its excellent bending toughness to produce a slight elastic depression or bending deformation, thereby mitigating the residual impact force. Therefore, through the synergistic work of the anti-glare layer 1, the flexible energy-absorbing layer 2, and the touch display layer 3, the display screen achieves both high definition and high impact resistance.

[0070] Example 2: A laminated display screen integrating impact resistance and anti-glare, referring to... Figure 3 The difference between this embodiment and embodiment 1 is that a nano-protective film 12 is deposited on the side of the anti-glare layer 1 where the anti-reflective texture 11 is provided.

[0071] Specifically, refer to Figure 3 and Figure 4 The nano-protective film 12 includes a hard reinforcing layer 121 and an anti-fouling and lubricating layer 122. The hard reinforcing layer 121 is in direct contact with the anti-glare layer 1, and the anti-fouling and lubricating layer 122 is located on the side of the hard reinforcing layer 121 away from the anti-glare layer 1.

[0072] In this embodiment, refer to Figure 4 The hard reinforcement layer 121 is an alumina thin film or zirconium dioxide thin film formed by atomic layer deposition (ALD) process. It uniformly and conformally coats the upper surface of the anti-glare layer 1, thereby protecting the surface of all the bosses 111. The thickness of the hard reinforcement layer 121 is 5 nm to 10 nm. Due to the excellent step coverage of the ALD process, the hard reinforcement layer 121 can closely conform to the complex morphology of the bosses 111, which not only enhances the resistance of the tips of the bosses 111 to mechanical wear, but also improves the overall lateral shear strength of the bosses 111 by reinforcing the roots of the bosses 111.

[0073] In this embodiment, refer to Figure 4 The antifouling and lubricating layer 122 is a monolayer perfluoropolyether film or a fluorinated silane film formed by a vapor-phase self-assembly deposition process, which is deposited on the surface of the hard reinforcement layer 121. The thickness of the antifouling and lubricating layer 122 is 2 nm to 5 nm. The perfluoropolyether film or the fluorinated silane film has extremely low surface energy and extremely low coefficient of friction, which enables external contact objects such as fingerprints, fabrics or hard particles to slip when they come into contact with the surface of the anti-reflective texture 11, reducing mechanical gripping force, thereby reducing the probability of damage to the anti-reflective texture 11, and giving the surface of the anti-glare layer 1 excellent superhydrophobic and anti-fingerprint properties.

[0074] The implementation principle of this application embodiment is as follows: When using the display screen, ambient light shines on the anti-glare layer 1. Since the total thickness of the rigid reinforcement layer 121 and the anti-fouling lubricating layer is much smaller than the height of the boss 111 and the distance between adjacent bosses 111, the refractive index of the incident light at the interface between the air and the anti-glare layer 1 still shows a continuous gradient change. The destructive interference principle can still be used to greatly reduce the specular reflectivity and achieve high-definition anti-glare display.

[0075] In terms of physical protection, the hard reinforcement layer 121 provides high hardness protection for the anti-reflective texture 11, improving the rigidity of the structure; while the anti-fouling lubricating layer 122 provides low friction protection, reducing the damage to the anti-reflective texture 11 caused by external friction.

[0076] When the display is impacted, the nano-protective film 12 first enhances the surface hardness and wear resistance of the anti-reflective texture 11, protecting the anti-reflective texture 11 on the anti-glare layer 1 from breakage due to the initial impact. Subsequently, the impact energy is gradually attenuated and avoided through the high-hardness anti-glare layer 1, the flexible energy-absorbing layer 2 with viscoelastic dissipation function, and the touch display layer 3 with bending toughness. By reinforcing the microstructure of the anti-reflective texture 11 through the nano-protective film 12, combined with the macroscopic dissipation of subsequent layers, the display maintains its optical performance while possessing higher surface durability and overall impact resistance.

[0077] Example 3: A laminated display screen integrating impact resistance and anti-glare, referring to... Figure 1 and Figure 5 The difference between this embodiment and embodiment 1 is that it also includes an active adjustment film layer 4, which is located between the anti-glare layer 1 and the flexible energy absorption layer 2. The anti-glare layer 1, the active adjustment film layer 4, the flexible energy absorption layer 2 and the touch display layer 3 are stacked in sequence and bonded to each other.

[0078] Reference Figure 5 and Figure 6 The active conditioning film layer 4 includes a base film 41, and light-absorbing particles 42 are dispersed inside the base film 41. A thermosensitive phase change film 43 is coated on the side of the base film 41 facing the anti-glare layer 1.

[0079] In this embodiment, the base film 41 is an optical-grade PET film or a colorless polyimide film (CPI) with a thickness of 50 μm to 125 μm. The light-absorbing particles 42 are ATO (antimony-doped tin oxide) nanoparticles or ITO (indium tin oxide) nanoparticles. The thermosensitive phase change film 43 is a vanadium dioxide film or a tungsten-doped vanadium dioxide film. When the thermosensitive phase change film 43 is a tungsten-doped vanadium dioxide film, by controlling the doping ratio of tungsten, the phase change point of the thermosensitive phase change film 43 can be set within the range of 40°C to 45°C to ensure that the phase transition can be achieved under low-power Joule heating.

[0080] With this design, by utilizing the ability of light-absorbing particles 42 to capture infrared energy in ambient light, light energy can be converted into heat energy and conducted to the thermosensitive phase change film 43, inducing the thermosensitive phase change film 43 to undergo a phase transition, causing it to switch from a highly transparent insulating state to a highly reflective metallic state. Thus, without increasing the thickness of the additional physical layer, selective shielding of the light emitted by the touch display layer 3 is achieved.

[0081] Reference Figure 6 The active conditioning film layer 4 also includes an electrical actuator 44, which includes a transparent electrode 441 disposed on the surface of the base film 41, and a thermosensitive phase change film 43 covering the transparent electrode 441. The electrical actuator 44 also includes a main control cable unit 442, which is electrically connected to the transparent electrode 441.

[0082] Reference Figure 6 In terms of spatial relationship, the transparent electrode 441 and the thermistor phase change film 43 are electrically connected through surface contact, and the transparent electrode 441 layer completely covers the surface of the thermistor phase change film 43. This fully covered stacking relationship ensures that the excitation current output by the main control wiring unit 442 can be evenly distributed across the entire thermistor phase change film 43, thereby achieving large-area synchronous heating, improving the heating uniformity of the thermistor phase change film 43, and thus ensuring the instantaneous and uniform phase change switching of the thermistor phase change film 43, avoiding inconsistent display effects caused by local temperature differences.

[0083] Reference Figure 6 Thus, under the design of the electric driver 44, upon receiving a user command, the main control cable unit 442 can output a high-frequency driving voltage to the transparent electrode 441. At this time, utilizing the Joule heating principle, the transparent electrode 441 is heated to actively drive the thermosensitive phase change film 43 to heat up to the phase change point, thereby enabling the display screen to switch between high-definition full-view mode and privacy narrow-view mode, enhancing the display screen's privacy protection capabilities in different environments. The main control cable unit 442 is electrically connected to the main control circuit or controller inside the display screen to obtain the necessary power and control signals.

[0084] Reference Figure 6 In this embodiment, the transparent electrode 441 adopts a silver nanowire or metal mesh structure. Specifically, the busbar portion of the transparent electrode 441 is thermo-pressed to the main control cabling unit 442 using anisotropic conductive adhesive to ensure contact stability under high current driving.

[0085] Among them, the metal mesh structure refers to a conductive metal mesh with micron-level linewidth formed on the surface of the base film 41 through imprinting or etching processes, often using copper or silver mesh. Because the width of the mesh lines of the conductive metal mesh is much smaller than the resolution limit of the human eye, and the mesh porosity is extremely high, this structure maintains extremely high transmittance while possessing excellent conductivity.

[0086] Reference Figure 6 In this embodiment, the main control cabling unit 442 uses a flexible printed circuit board (FPC) or an ultra-fine coaxial cable assembly (MCC). Specifically, when the main control cabling unit 442 uses a flexible printed circuit board, one end of the flexible printed circuit board is connected to all transparent electrodes 441 through anisotropic conductive adhesive, and the other end is provided with a plug-in portion to connect and cooperate with the interface of the controller inside the display screen; and a driver chip is also provided on the flexible printed circuit board. The driver chip is used to receive the command signal of the corresponding controller and convert it into a power electrical signal to drive the transparent electrodes 441 to generate heat, so as to realize the control of the phase transition state of the thermosensitive phase change film 43. Among them, the driver chip is generally a power driver IC. In addition, the main control cabling unit 442 can also use an ultra-fine coaxial cable assembly (MCC) to meet the requirements of higher signal transmission density or more stringent wiring space.

[0087] The implementation principle of this application embodiment is as follows: When using the display screen, if it is in high-definition mode, the thermosensitive phase change film 43 in the active adjustment film layer 4 is in a room temperature insulating state, that is, a semiconductor state. Its crystal structure exhibits monoclinic symmetry and has extremely high transmittance for visible light. The light penetrates vertically through the interfaces of each layer, and together with the anti-glare texture 11 of the anti-glare layer 1, it provides a high-definition picture.

[0088] When the privacy function needs to be activated, the thermosensitive phase change film 43 is heated above its phase transition point by the active heating via the electric actuator 44 or by the absorption of heat from strong light by the light-absorbing particles 42. At this time, a Mott phase transition occurs inside the thermosensitive phase change film 43, and its internal lattice structure changes to a rutile tetragonal structure. The thermosensitive phase change film 43 instantly changes from a semiconductor state to a metallic state. In the metallic state, the plasma frequency of the thermosensitive phase change film 43 shifts, causing the thermosensitive phase change film 43 to produce a strong Bragg reflection or total internal reflection effect for light incident at large angles (i.e., non-orthographic projection direction), while light propagating in the forward direction (i.e., orthographic projection direction) can still partially pass through, thereby achieving physical shielding for narrow viewing angle displays and achieving a privacy effect.

[0089] When the display screen is impacted, the active conditioning layer 4, serving as the intermediate layer structure, forms a multi-interface composite structure with its high-strength base film 41, flexible energy-absorbing layer 2, and anti-glare layer 1. This not only increases the overall structural rigidity but also extends the transmission path of the shock wave due to the presence of multiple heterogeneous interfaces. After passing through the anti-glare layer 1, the impact energy enters the active conditioning layer 4 for interface reflection and attenuation, then enters the flexible energy-absorbing layer 2 for deep dissipation through molecular chain friction, and finally, the flexible display layer 31 absorbs the aftershocks. This protective mechanism enhances the survival rate of the display screen under extreme drop or impact conditions.

[0090] Example 4: A laminated display screen integrating impact resistance and anti-glare, referring to... Figure 5 and Figure 7 The difference between this embodiment and embodiment 2 is that it also includes a sensing feedback layer 5, which is located between the active adjustment film layer 4 and the flexible energy absorption layer 2. Furthermore, the anti-glare layer 1, the active adjustment film layer 4, the sensing feedback layer 5, the flexible energy absorption layer 2, and the touch display layer 3 are stacked in sequence and bonded to each other.

[0091] Reference Figure 7 The sensing feedback layer 5 includes a transparent flexible substrate 51. In this embodiment, the transparent flexible substrate 51 is an optical-grade PET film with a thickness of 25μm to 50μm.

[0092] Reference Figure 7 The sensing feedback layer 5 also includes a piezoelectric sensing film 52, which is attached to the transparent flexible substrate 51 and located on the side of the transparent flexible substrate 51 facing the flexible energy-absorbing layer 2. In this embodiment, the piezoelectric sensing film 52 is a PVDF (polyvinylidene fluoride) piezoelectric film, a transparent piezoelectric ceramic film, or a nanowire composite piezoelectric layer.

[0093] Reference Figure 7 The sensing feedback layer 5 also includes a sensing cable unit 53, which is located outside the transparent flexible substrate 51. The piezoelectric sensing film 52 is electrically connected to the sensing cable unit 53, and the sensing cable unit 53 is electrically connected to the main control cable unit 442.

[0094] In this embodiment, the sensing cable unit 53 is a flexible printed circuit board (FPC). Specifically, one end of the sensing cable unit 53 is electrically connected to all the piezoelectric sensing films 52 via anisotropic conductive adhesive, and the other end is provided with a connection end. A slave interface is soldered onto the main control cable unit 442, and the connection end of the sensing cable unit 53 is plugged into the slave interface on the main control cable unit 442 to achieve electrical connection, which enables the sensed pressure electrical signal to be fed into the main control cable unit 442.

[0095] When assembling the display screen of this application onto the corresponding product, it is only necessary to connect the connector of the main control cable unit 442 to a single slot of the external display screen controller to simultaneously realize the acquisition of control signals, the transmission of drive current, and the feedback of sensing signals.

[0096] In this embodiment, the main control cabling unit 442 is equipped with an independent signal shielding layer to isolate the weak electrical signal generated by the piezoelectric sensing film 52 from the high-power current that drives the transparent electrode 441 to generate heat, thus preventing electromagnetic interference from causing sensing distortion. This highly integrated cabling architecture not only simplifies the display installation process but also enables real-time monitoring of the sensing signal and automatic closed-loop adjustment of the state of the thermosensitive phase change film 43 through centralized management by the main control cabling unit 442.

[0097] The implementation principle of this application embodiment is as follows: When using the display screen, the sensing feedback layer 5 uses the piezoelectric sensing film 52 to monitor the interface stress state in real time, and the pressure electrical signal is fed into the main control cable unit 442 through the sensing cable unit 53.

[0098] When the display screen receives a severe external impact, the shock wave is transmitted downwards through the anti-glare layer 1, and the pulse electrical signal generated by the sensing feedback layer 5 is transmitted back to the internal controller of the display screen through the main control cable unit 442. At this time, the controller determines whether the impact intensity exceeds the preset safety threshold.

[0099] After detecting that the impact intensity exceeds a preset safety threshold, the controller immediately outputs a high-frequency excitation voltage to the active regulating membrane layer 4 via the main control cabling unit 442. Specifically, the controller calculates the time derivative of the pulse electrical signal in real time, i.e., the voltage change rate. Because the instantaneous impact caused by a drop or collision has an extremely steep rising edge, its corresponding voltage change rate is much greater than that of ordinary touch operation. At this time, the controller determines whether the impact intensity exceeds the preset safety threshold, that is, it identifies extreme impact conditions by determining whether the voltage change rate is greater than or equal to the preset change rate threshold.

[0100] Upon detecting that the impact intensity exceeds a preset safety threshold, the controller immediately outputs a high-frequency excitation voltage to the active regulating film layer 4 via the main control wiring unit 442. At this moment, the thermosensitive phase change film 43 undergoes an instantaneous phase transition, with its crystal structure changing from a monoclinic phase to a tetragonal phase. The microscopic displacement generated by the abrupt change in the lattice constant performs deformation work, offsetting part of the impact kinetic energy. Simultaneously, the large amount of latent heat of phase change absorbed during the phase transition process rapidly absorbs the instantaneous energy generated by the impact, preventing energy concentration at the lamination interface and subsequent peeling failure.

[0101] After the impact, the controller automatically adjusts the magnitude of the drive current based on the residual stress data transmitted back in real time by the sensing feedback layer 5, so that the thermosensitive phase change film 43 is maintained in the optimal physical state. The residual stress continues to be transmitted downward, dissipated viscoelastically by the flexible energy-absorbing layer 2, and elastically avoided by the touch display layer 3.

[0102] It should be noted that, due to the viscoelastic hysteresis effect of the flexible energy-absorbing layer 2, it has a significant delay effect on the transmission of shock waves, thus providing the necessary response window for the linkage between the sensing feedback layer 5 and the active adjustment film layer 4. When the sensing feedback layer 5 captures the impact signal, it utilizes the ultrafast phase change characteristics of the thermosensitive phase change film 43 to actively intervene in and offset the impact stress before the peak energy of the shock wave passes through the interface between the anti-glare layer 1 and the active adjustment film layer 4, through changes in macroscopic mechanical characteristics such as modulus switching and phase change displacement caused by phase transformation.

[0103] Thus, the synergistic cooperation between the feedback sensing layer and the active adjustment film layer 4 enables a closed-loop feedback adjustment protection mechanism, achieving synergy between sensing and execution in the electronic control logic, thereby improving the overall survival rate and interface stability of the display screen under extreme collision conditions.

[0104] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A laminated display screen integrating impact resistance and anti-glare, characterized in that, include: An anti-glare layer (1), a flexible energy-absorbing layer (2), and a touch display layer (3) are stacked in sequence. The anti-glare layer (1) has an anti-reflective texture (11) on the side away from the flexible energy-absorbing layer (2). The anti-reflective texture (11) includes several protrusions (111). The cross-sectional area of ​​the protrusions (111) gradually decreases along the direction away from the flexible energy-absorbing layer (2). The protrusions (111) are arranged in a matrix, and the distance between two adjacent protrusions (111) is less than the wavelength of visible light.

2. The laminated display screen integrating impact resistance and anti-glare as described in claim 1, characterized in that, The distance between two adjacent protrusions (111) is 180nm to 250nm.

3. The laminated display screen integrating impact resistance and anti-glare as described in claim 1, characterized in that, A nano-protective film (12) is deposited on the surface of the anti-glare layer (1) on which the anti-reflective texture (11) is provided.

4. The laminated display screen integrating impact resistance and anti-glare as described in claim 1, characterized in that, The flexible energy-absorbing layer (2) is formed by curing transparent polyurethane acrylate resin or transparent optical adhesive.

5. A laminated display screen integrating impact resistance and anti-glare as described in claim 1, characterized in that, The touch display layer (3) includes a flexible display layer (31) and a touch sensing layer (32) disposed on the flexible display layer (31). The touch sensing layer (32) is stacked between the flexible display layer (31) and the flexible energy-absorbing layer (2), or the flexible display layer (31) is stacked between the touch sensing layer (32) and the flexible energy-absorbing layer (2).

6. A laminated display screen integrating impact resistance and anti-glare as described in claim 5, characterized in that, The flexible display layer (31) adopts a flexible AMOLED display module or a flexible Mini-LED backlight module.

7. A laminated display screen integrating impact resistance and anti-glare as described in claim 1, characterized in that, It also includes an active conditioning membrane layer (4), which includes a base film (41) and is stacked between the anti-glare layer (1) and the flexible energy-absorbing layer (2); The base film (41) contains light-absorbing particles (42) which absorb infrared light and convert it into heat energy. The base film (41) is coated with a thermosensitive phase change film (43) on the side facing the anti-glare layer (1).

8. A laminated display screen integrating impact resistance and anti-glare as described in claim 7, characterized in that, The light-absorbing particles (42) are antimony-doped tin oxide nanoparticles or indium tin oxide nanoparticles; the thermosensitive phase change film (43) is a vanadium dioxide film or a tungsten-doped vanadium dioxide film.

9. A laminated display screen integrating impact resistance and anti-glare as described in claim 7, characterized in that, The active conditioning film layer (4) further includes an electric actuator (44), which includes a transparent electrode (441) and a main control cable unit (442) electrically connected to the transparent electrode (441). The transparent electrode (441) is disposed on the surface of the base film (41), and the thermosensitive phase change film (43) covers the transparent electrode (441).

10. A laminated display screen integrating impact resistance and anti-glare as described in claim 9, characterized in that, It also includes a sensing feedback layer (5), which includes a transparent flexible substrate (51). The transparent flexible substrate (51) is stacked between the active adjustment film layer (4) and the flexible energy absorption layer (2). A piezoelectric sensing film (52) is attached to the transparent flexible substrate (51). The sensing feedback layer (5) also includes a sensing cable unit (53), one end of which is electrically connected to the piezoelectric sensing film (52), and the other end is electrically connected to the main control cable unit (442).

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