A composite film with uv-infrared heat insulation and polarization correction function for display screen

Abstract

The utility model provides a kind of composite film for display screen with UV infrared heat insulation and polarization correction function, it includes: super complex bending polyester film layer;Composite film layer is set in the lower surface of the super complex bending polyester film layer;The composite film layer includes UV film layer and IR heat insulation film layer, wherein, the UV film layer is set between the super complex bending polyester film layer and the IR heat insulation film layer, or, the IR heat insulation film layer is set between the super complex bending polyester film layer and the UV film layer.Compared with prior art, the composite film for display screen with UV infrared heat insulation and polarization correction function of the utility model, can realize UV function, infrared heat insulation function, polarized light correction and yellowing resistance function simultaneously by three-layer structure synergistic effect, meet the complex environmental application requirement of high-end display screen.

Description

Technical Field

[0001] This utility model relates to the technical field of optical film materials for display screens, and in particular to a composite film for display screens with UV protection, infrared heat insulation, and polarization correction functions. Background Technology

[0002] In the display industry, the functional requirements for optical films are becoming increasingly diversified. Single-function films, such as those with only UV protection or only heat insulation, can no longer meet the comprehensive requirements of high-end display devices for light control, heat management, and long-term stability. Utility Model Content

[0003] The purpose of this invention is to provide a composite film for display screens with UV protection, infrared heat insulation, and polarization correction functions, aiming to solve the technical problem of the limited functionality of film materials in the aforementioned background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: This utility model provides a composite film for display screens with UV protection, infrared heat insulation, and polarization correction functions, comprising: Super-refractive polyester film layer; A composite film layer is disposed on the lower surface of the ultra-refractive polyester film layer; the composite film layer includes... UV protection film and IR heat insulation film, among which, The UV-protective film layer is disposed between the ultra-refractive polyester film layer and the IR heat-insulating film layer. or, The IR heat-insulating film layer is disposed between the ultra-refractive polyester film layer and the UV-resistant film layer.

[0005] Compared with existing technologies, the composite film for displays with UV protection, infrared heat insulation and polarization correction functions of this invention can achieve UV protection, infrared heat insulation, polarization correction and yellowing resistance through the synergistic effect of the three-layer structure, thus meeting the complex environmental application requirements of high-end displays.

[0006] In one embodiment, the phase difference of the hyperrefractive polyester film layer is >8000; The thickness of the super-refractive polyester film layer is 80~120μm.

[0007] In one embodiment, the surface of the UV-resistant film is provided with an ultraviolet absorbing layer, which is formed by coating organic ultraviolet absorbers or inorganic nano-sized ultraviolet blocking particles.

[0008] In one embodiment, the organic ultraviolet absorber includes benzotriazole compounds.

[0009] In one embodiment, the inorganic nanoscale ultraviolet blocking particles include titanium dioxide particles or zinc oxide particles.

[0010] In one embodiment, the thickness of the UV-protective film is 30~80μm.

[0011] In one embodiment, the surface of the IR heat insulation film layer is provided with a heat insulation layer, which is formed by coating metal oxides or nano-ceramic particles.

[0012] In one embodiment, the metal oxide includes indium tin oxide and zinc aluminum oxide.

[0013] In one embodiment, the thickness of the IR heat insulation film layer is 80~120μm.

[0014] In one embodiment, the super-refractive polyester film layer and the composite film layer, as well as the UV-resistant film layer and the IR-insulating film layer, are connected by an adhesive layer. The adhesive layer includes acrylic adhesives or silicone adhesives. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to this application.

[0016] Explanation of reference numerals in the attached figures: 1. Highly flexible polyester film layer; 2. UV-resistant film layer; 3. IR-insulating film layer; 4. Acrylic adhesive; 5. Silicone adhesive Detailed Implementation To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0017] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0018] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0019] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0021] In existing technologies, single-function film materials, such as those with only UV protection or only heat insulation, can no longer meet the comprehensive requirements of high-end display devices for light control, heat management, and long-term stability. Traditional UV-protective film materials typically use chemically absorbing coatings, which degrade over time and cannot fulfill other functions. Film materials with only heat insulation may scatter or absorb polarized light, leading to color distortion or brightness reduction in the display. Ordinary polyester film materials with only yellowing resistance are prone to yellowing under ultraviolet light or high temperatures, affecting the light transmittance and lifespan of the display. Furthermore, existing film materials struggle to effectively correct the polarization state of ambient light, causing problems such as glare and viewing angle deviation under strong light.

[0022] To address the technical problem of limited functionality in existing film materials, this invention provides a composite film for displays with UV protection, infrared heat insulation, and polarization correction functions. The film comprises: a highly complex polyester film layer 1; and a composite film layer disposed on the lower surface of the highly complex polyester film layer 1. The composite film layer includes a UV protection film layer and an IR heat insulation film layer, wherein the UV protection film layer is disposed between the highly complex polyester film layer 1 and the IR heat insulation film layer, or the IR heat insulation film layer is disposed between the highly complex polyester film layer 1 and the UV protection film layer.

[0023] In this embodiment, the composite film for the display screen with UV protection, infrared heat insulation, and polarization correction functions comprises, from top to bottom, the ultra-complex polyester film layer 1, the UV protection film layer, and the IR heat insulation film layer. Specifically, the ultra-complex polyester film layer 1 uses an ultra-high phase difference (i.e., the phase difference of the ultra-complex polyester film layer 1 is >8000°). Phase difference refers to the optical path difference between two polarization components perpendicular and parallel to the film surface when light propagates in the film. By controlling this phase difference parameter, the ultra-complex polyester film layer 1 converts linearly polarized light into elliptical or circularly polarized light, effectively correcting the polarization state in ambient light, reducing reflections and viewing angle deviations, and improving the visibility of the display screen under strong light. In addition, the ultra-complex polyester film layer 1 is made of polyester material, which has excellent resistance to yellowing and is not prone to discoloration with long-term use. The UV-resistant film can effectively absorb or reflect ultraviolet rays with a wavelength of 200-400nm, with a UV blocking rate of ≥99%, protecting the display screen from UV aging damage; the IR heat insulation film reduces the temperature rise of the display screen caused by ambient heat (such as direct sunlight) by 30%~50% by reflecting or scattering infrared radiation, avoiding damage to the internal components of the display screen (such as liquid crystal molecules and backlight modules) caused by high temperature.

[0024] Compared with existing technologies, the composite film for displays with UV protection, infrared heat insulation and polarization correction functions of this invention can achieve UV protection, infrared heat insulation, polarization correction and yellowing resistance through the synergistic effect of the three-layer structure, thus meeting the complex environmental application requirements of high-end displays.

[0025] In other embodiments, the positions of the UV-resistant film layer and the IR heat-insulating film layer can be interchanged, that is, the composite film for the display screen with UV-resistant infrared heat insulation and polarization correction functions includes, from top to bottom, the ultra-refractive polyester film layer 1, the IR heat-insulating film layer and the UV-resistant film layer.

[0026] It should be noted that because the ultra-refractive polyester film layer 1 has resistance to yellowing under sunlight, it can protect the UV-protective film layer and the IR heat-insulating film layer from aging and yellowing due to ultraviolet light when exposed to direct sunlight. Therefore, the ultra-refractive polyester film layer 1 is disposed on the upper surface of the composite film layer.

[0027] In this embodiment, the phase difference of the hypercomplex polyester film layer 1 is >8000°; the thickness of the hypercomplex polyester film layer 1 is 80~120μm. The hypercomplex polyester film layer 1 with high phase difference in this embodiment is controlled by the coating of a high phase difference material (such as a high phase liquid crystal layer) on its surface and the thickness of the hypercomplex polyester film layer 1.

[0028] In this embodiment, the surface of the UV-protective film is provided with an ultraviolet absorbing layer, which is formed by coating organic ultraviolet absorbers or inorganic nanoscale ultraviolet blocking particles. Preferably, the organic ultraviolet absorber includes benzotriazole compounds. The inorganic nanoscale ultraviolet blocking particles include titanium dioxide particles or zinc oxide particles.

[0029] In this embodiment, the thickness of the UV-protective film is 30~80μm.

[0030] In this embodiment, the surface of the IR heat-insulating film layer is provided with a heat-insulating layer, which is formed by coating metal oxides or nano-ceramic particles. Preferably, the metal oxides include indium tin oxide and zinc aluminum oxide.

[0031] In one embodiment, the thickness of the IR heat insulation film layer is 80~120μm.

[0032] In one embodiment, the ultra-refractive polyester film layer 1 and the composite film layer, as well as the UV-protective film layer and the IR heat-insulating film layer, are connected by an adhesive layer; the adhesive layer includes acrylic adhesive or silicone adhesive. Specifically, acrylic adhesive 4 is coated on the lower surface of the ultra-refractive polyester film layer 1, and then composited and cured with the UV-protective film layer; similarly, silicone adhesive 5 is coated on the lower surface of the UV-protective film layer, and then composited and cured with the IR heat-insulating film layer. The various film layers are bonded together with optical-grade adhesive (such as acrylic or silicone adhesive), with the adhesive thickness controlled at 5~10μm to ensure interlayer adhesion ≥5N / cm, and the adhesive layer itself has low haze, high light transmittance, and weather resistance, avoiding negative impacts on optical performance.

[0033] When the above three film layers are combined, the polarization axis of the super-refractive polyester film layer 1 must be combined at a 45° angle with the other two film layers (the anti-UV film layer and the IR heat insulation film layer). Only in this way can linearly polarized light be converted into circularly polarized light after passing through when used with a display screen.

[0034] In the description of this utility model, it should be understood that the terms "vertical", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0035] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0036] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions, characterized in that, include: Super-refractive polyester film layer; A composite film layer is disposed on the lower surface of the ultra-refractive polyester film layer; the composite film layer includes... UV protection film and IR heat insulation film, among which, The UV-protective film layer is disposed between the ultra-refractive polyester film layer and the IR heat-insulating film layer. or, The IR heat-insulating film layer is disposed between the ultra-refractive polyester film layer and the UV-resistant film layer.

2. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 1, characterized in that: The phase difference of the hypercomplex polyester film layer is >8000; The thickness of the super-refractive polyester film layer is 80~120μm.

3. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 1, characterized in that: The surface of the UV-resistant film is provided with an ultraviolet absorption layer, which is made of organic ultraviolet absorbers or inorganic nano-scale ultraviolet blocking particles.

4. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 3, characterized in that: The organic ultraviolet absorbers include benzotriazole compounds.

5. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 3, characterized in that: The inorganic nanoscale ultraviolet blocking particles include titanium dioxide particles or zinc oxide particles.

6. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 1, characterized in that: The thickness of the UV-protective film is 30~80μm.

7. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 1, characterized in that: The surface of the IR heat insulation film is provided with a heat insulation layer, which is made of metal oxide or nano-ceramic particles.

8. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 7, characterized in that: The metal oxides include indium tin oxide and zinc aluminum oxide.

9. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 1, characterized in that: The thickness of the IR heat insulation film is 80~120μm.

10. The composite film for a display screen with UV protection, infrared heat insulation, and polarization correction functions according to claim 1, characterized in that: The super-refractive polyester film layer and the composite film layer, as well as the UV-resistant film layer and the IR-insulating film layer, are connected by an adhesive layer. The adhesive layer includes acrylic adhesives or silicone adhesives.

Images