High-temperature-resistant and aging-resistant composite OCA optical adhesive film

Abstract

The utility model discloses a kind of high-temperature-resistant and ageing-resistant composite OCA optical adhesive film, comprising: base film, the lower surface of the base film is provided with OCA layer film, for realizing high light transmission bonding effect;Buffer light transmission film is provided at the both sides of the base film, for dispersing external stress and improving overall stability;The upper surface of the base film is covered with high-temperature-resistant top layer film, further enhance the heat resistance of adhesive film;OCA layer film both sides are provided with release film, OCA layer film is protected before use, it is convenient to quickly peel off.The upper surface of the high-temperature-resistant top layer film is provided with silicon oxide film, for providing heat insulation and barrier function, the outer surface of silicon oxide film covers ultraviolet absorption layer, can effectively block ultraviolet irradiation, delay aging;OCA layer film bottom surface is also provided with nano coating, improve its ageing resistance, pollution resistance and adhesion.

Description

Technical Field

[0001] This utility model relates to the field of optical film technology, specifically to a high-temperature resistant and aging-resistant composite OCA optical film. Background Technology

[0002] High-temperature and aging-resistant composite OCA optical films are used in the encapsulation process of optical components. Through their high-temperature resistance, UV resistance, and aging resistance, they achieve stable, high-transmittance bonding, preventing problems such as yellowing, bubbling, and delamination caused by high temperatures, UV radiation, or long-term use, thereby improving product lifespan and display performance. Existing OCA optical films are mostly used for bonding displays and touch panels, but they generally suffer from poor high-temperature resistance, susceptibility to yellowing under UV radiation, and easy failure of the adhesive layer, leading to decreased display performance and shortened lifespan. Furthermore, some structures lack stress-buffering design, making them prone to delamination and bubbling defects during long-term use, failing to meet the application requirements in high-temperature and complex environments. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art by providing a high-temperature and aging-resistant composite OCA optical film. This improvement addresses issues such as insufficient heat resistance, easy aging, poor UV protection, and poor long-term stability in existing optical films. By incorporating a high-temperature resistant top layer and a silica film to enhance heat resistance, an anti-UV absorption layer to effectively delay aging, a buffer transparent film to improve structural stability, a nano-coating to enhance adhesion and weather resistance, and a release film to ensure cleanliness and easy peeling before use, the invention solves the practical problems of easy failure and short lifespan under high-temperature environments.

[0004] This invention also provides a composite OCA optical film with the aforementioned high-temperature and aging-resistant properties, comprising: a base film; an OCA layer film disposed on the lower surface of the base film; buffer light-transmitting films disposed on both sides of the base film; a high-temperature resistant top layer film disposed on the upper surface of the base film; and release films disposed on both sides of the OCA layer film; a silicon oxide film disposed on the upper surface of the high-temperature resistant top layer film; an anti-ultraviolet absorption layer disposed on the outer surface of the silicon oxide film; and a nano-coating disposed on the bottom surface of the OCA layer film. These components enhance the high-temperature and aging resistance of the composite OCA optical film.

[0005] According to the high-temperature resistant and aging-resistant composite OCA optical film provided by this utility model, a sealing film is fixedly connected to the lower surface of the nano-coating, and an anti-oxidation layer is provided on the lower surface of the sealing film. These components facilitate the aging process of the optical film.

[0006] According to the high-temperature resistant and aging-resistant composite OCA optical film provided by this utility model, a high-temperature resistant reinforcing fiber layer is fixedly connected to the back surface of the OCA layer, and a ceramic microparticle dispersion layer is fixedly connected to the outer surface of the high-temperature resistant reinforcing fiber layer. These components enhance the high-temperature resistance and heat dissipation of the optical film.

[0007] According to the high-temperature resistant and aging-resistant composite OCA optical film provided by this utility model, the buffer light-transmitting film is composed of a double-layer polyester film, with the inner layer being a high-transmittance polyester film and the outer layer being a heat-resistant polyester film. These components contribute to the heat resistance of the buffer light-transmitting film.

[0008] According to the high-temperature resistant and aging-resistant composite OCA optical film provided by this utility model, the detachable high-temperature resistant top layer film is composed of an aramid fiber reinforcing layer and a transparent siloxane film. These components enhance the high-temperature stability of the film.

[0009] According to the high-temperature resistant and aging-resistant composite OCA optical film provided by this utility model, the ultraviolet-resistant absorption layer is doped with nano-zinc oxide particles, and an organic ultraviolet absorber is also disposed inside. These components are beneficial for absorbing ultraviolet rays and extending the service life.

[0010] According to the high-temperature and aging-resistant composite OCA optical film provided by this invention, the nano-coating is a composite layer of nano-titanium dioxide and fluorosilicone modified resin, used to improve aging resistance and stain resistance. These components contribute to improved stain resistance.

[0011] According to the high-temperature resistant and aging-resistant composite OCA optical adhesive film provided by this utility model, the release film surface is provided with a low surface energy fluorinated coating to facilitate rapid peeling during the lamination process. These components are beneficial for production and processing.

[0012] Compared with existing technologies, the high-temperature and aging-resistant composite OCA optical adhesive film enhances structural stability through the synergistic effect of the base film and the buffer transparent film; the high-temperature resistant top film and silica film significantly enhance heat resistance; the anti-UV absorption layer effectively blocks ultraviolet rays and delays aging; the nano-coating at the bottom of the OCA layer film improves adhesion and weather resistance; and the release film ensures that the adhesive layer is clean and easy to peel off. Overall, it possesses the beneficial effects of high-temperature resistance, aging resistance, and long-term optical stability. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a top view of the high-temperature and aging-resistant composite OCA optical film of this invention. Figure 2This is a bottom view of the high-temperature and aging-resistant composite OCA optical film of this utility model. Figure 3 This is a side view of the high-temperature and aging-resistant composite OCA optical film of this invention. Figure 4 This is a front view of the high-temperature and aging-resistant composite OCA optical film of this invention.

[0014] Legend: 1. Base film; 2. OCA layer film; 3. Buffer transparent film; 4. High temperature resistant top layer film; 5. Release film; 6. Silica film; 7. Anti-ultraviolet absorption layer; 8. Nano coating; 9. Sealing film; 10. Antioxidant layer; 11. High temperature resistant reinforcing fiber layer; 12. Ceramic microparticle dispersion layer. Detailed Implementation

[0015] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0016] Reference Figures 1-4 The present invention relates to a high-temperature resistant and aging-resistant composite OCA optical film, comprising: a base film 1, an OCA layer film 2 disposed on the lower surface of the base film 1, a high-temperature resistant reinforcing fiber layer 11 fixedly connected to the rear surface of the OCA layer film 2, a ceramic microparticle dispersion layer 12 fixedly connected to the outer surface of the high-temperature resistant reinforcing fiber layer 11, a buffer light-transmitting film 3 disposed on both sides of the base film 1, the buffer light-transmitting film 3 being composed of a double-layer polyester film, the inner layer being a high-transmittance polyester film and the outer layer being a heat-resistant polyester film, a high-temperature resistant top layer film 4 disposed on the upper surface of the base film 1, the detachable high-temperature resistant top layer film 4 being composed of an aramid fiber reinforcing layer and a transparent siloxane film, and release films 5 disposed on both sides of the OCA layer film 2, the surface of the release film 5 being provided with a low surface energy fluorinated coating to facilitate rapid peeling during the lamination process.

[0017] Specifically, the base film 1 has an OCA layer film 2 bonded to its lower surface to provide high light transmittance and adhesion performance; buffer light-transmitting films 3 are fixedly connected to both sides of the base film 1 to improve structural stability and reduce the transmission of external stress; the upper surface of the base film 1 is covered with a high-temperature resistant top layer film 4 to enhance heat resistance and prevent aging; release films 5 are provided on both sides of the OCA layer film 2 to facilitate protection and rapid peeling before use, thereby ensuring overall optical performance and reliability.

[0018] A silicon oxide film 6 is provided on the upper surface of the high-temperature resistant top film 4. An anti-ultraviolet absorption layer 7 is provided on the outer surface of the silicon oxide film 6. The anti-ultraviolet absorption layer 7 is doped with nano zinc oxide particles and contains an organic ultraviolet absorber. A nano coating 8 is provided on the bottom surface of the OCA layer film 2. The nano coating 8 is a composite layer of nano titanium dioxide and fluorosilicone modified resin, which is used to improve the aging resistance and pollution resistance. A sealing film 9 is fixedly connected to the lower surface of the nano coating 8. An anti-oxidation layer 10 is provided on the lower surface of the sealing film 9.

[0019] Specifically, the upper surface of the high-temperature resistant top film 4 is covered with a silicon oxide film 6 to improve heat resistance and barrier properties; the outer surface of the silicon oxide film 6 is further provided with an anti-ultraviolet absorption layer 7, which can effectively block ultraviolet radiation and delay the aging process of the material; the bottom surface of the OCA layer film 2 is provided with a nano-coating 8, which is composed of highly weather-resistant nanomaterials and has the functions of enhancing aging resistance, pollution resistance and adhesion, so that the overall structure maintains excellent optical performance and long-term stability under high temperature and ultraviolet environment.

[0020] Working principle: The base film 1 serves as the main load-bearing structure, ensuring overall stability; the OCA layer film 2 on its lower surface provides high light transmittance and adhesion performance; the buffer light-transmitting films 3 on both sides can disperse external forces and avoid stress concentration; the high-temperature resistant top layer film 4 on the upper surface, together with the silicon oxide film 6, forms a heat-resistant barrier; the outer anti-ultraviolet absorption layer 7 effectively filters ultraviolet rays and delays aging; the nano-coating 8 on the bottom surface of the OCA layer film 2 improves weather resistance and adhesion; the release films 5 on both sides of the OCA layer film protect the adhesive layer before use, ensuring that the whole has high temperature resistance, aging resistance and stable optical performance.

[0021] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A high-temperature resistant and aging-resistant composite OCA optical film, characterized in that, include: The base film (1) has an OCA layer film (2) on its lower surface, a buffer light-transmitting film (3) on both sides of the base film (1), a high-temperature resistant top layer film (4) on its upper surface, and a release film (5) on both sides of the OCA layer film (2). The high-temperature resistant top film (4) has a silicon oxide film (6) on its upper surface, an anti-ultraviolet absorption layer (7) on its outer surface, and a nano-coating (8) on its bottom surface.

2. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, A sealing film (9) is fixedly connected to the lower surface of the nano-coating (8), and an antioxidant layer (10) is provided on the lower surface of the sealing film (9).

3. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, A high-temperature resistant reinforcing fiber layer (11) is fixedly connected to the back surface of the OCA layer (2), and a ceramic microparticle dispersion layer (12) is fixedly connected to the outer surface of the high-temperature resistant reinforcing fiber layer (11).

4. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, The buffer transparent film (3) is composed of a double-layer polyester film, with the inner layer being a high-transmittance polyester film and the outer layer being a heat-resistant polyester film.

5. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, The removable high-temperature resistant top layer film (4) is composed of an aramid fiber reinforcing layer and a transparent siloxane film.

6. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, The UV-resistant absorption layer (7) is doped with nano zinc oxide particles and also contains an organic UV absorber.

7. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, The nano-coating (8) is a composite layer of nano-titanium dioxide and fluorosilicone modified resin, used to improve aging resistance and pollution resistance.

8. The high-temperature resistant and aging-resistant composite OCA optical film according to claim 1, characterized in that, The release film (5) has a low surface energy fluorinated coating on its surface to facilitate rapid peeling during the lamination process.

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