CN-224216899-U - Composite optical film

Abstract

The utility model discloses a composite optical film, which belongs to the technical field of optical films and comprises an optical film and a plurality of protruding structures. The convex structure is positioned on the surface of the optical film and is provided with an asymmetric prism structure, and the design of the convex structure realizes the precise orientation of light rays and the optimization of optical performance. By adopting an advanced precise printing process, the composite optical film effectively combines multiple functions of brightness orientation enhancement, stray light inhibition, soft picture and the like. While ensuring excellent optical performance, exhibits superior mechanical durability and long-term stability. The composite optical film is suitable for various high-end application scenes such as vehicle-mounted display, virtual reality, medical display and the like, remarkably improves the visual experience quality, and has wide application prospect and industrial value.

Inventors

• HUANG XIN
• Zhou Mingtou
• ZHOU MINJUN
• HUANG JING
• TIAN JIARUI

Assignees

• 江苏新扬浩科技材料有限公司

Dates

Publication Date

20260508

Application Date

20250604

Claims (4)

1. 1. The composite optical film is characterized by comprising an optical film (10) and a plurality of protruding structures (20), wherein the protruding structures (20) are positioned on the surface of the optical film (10), the protruding structures (20) are asymmetric prism structures, the protruding structures (20) and the optical film (10) form an angle theta 1 (30) and an angle theta 2 (40), the angle theta 1 (30) is 20 DEG < theta 1 <60 DEG, and the angle theta 1 (30) and the angle theta 2 (40) are added to be smaller than 120 deg.
2. 2. A composite optical film according to claim 1, characterized in that the optical film sheet (10) is a PET substrate film or a pre-processed film coating.
3. 3. A composite optical film according to claim 1, wherein the raised structures (20) are uniformly distributed on the surface of the optical film (10).
4. 4. A composite optical film according to claim 1, wherein the raised structures (20) are integrally formed with the optical film (10).

Description

Composite optical film Technical Field The utility model belongs to the technical field of optical films, and particularly relates to a composite optical film. Background Rapid advances in technology have driven the evolution of digital electronic devices toward lighter, higher brightness and higher energy efficiency. This trend has driven innovations in display technology, particularly in terms of environmental protection and energy conservation, to develop various solutions to enhance the performance of optical films in backlight systems. As consumer demands for display performance continue to increase, display technology has undergone significant changes. Liquid Crystal Displays (LCDs) are evolving into a mature stage, and the performance of the backlight system plays a key role in the display effect. The diversity of application scenarios makes it desirable for displays to provide higher contrast, a wider color gamut, and a more uniform brightness distribution. Optical film technology has shown significant value in meeting these needs, particularly in improving light efficiency and controlling light transmission. The prism sheet optical film plays a key role in this process. Through precise structural design and optical engineering, the film effectively uses the refraction and reflection principles of light to correct and guide the propagation of light. The film can effectively collect scattered light and recycle the light which may be scattered originally, thereby remarkably improving the light efficiency of the backlight module. The material and microstructure design of the optimized membrane not only improves the display brightness, but also reduces the overall energy consumption and the heat output, thereby improving the heat dissipation performance of the device. With the popularity of smart wearable devices, automotive displays, and large-sized display screens, the importance of optical films in a variety of applications is becoming increasingly prominent. For these emerging markets, continued innovations in optical film technology aim to meet higher performance requirements and user experience, pushing the entire display industry toward a more efficient and sustainable direction. By continually developing new technologies and improving production processes, optical film technology will occupy an important position in future display technologies, providing users with excellent visual experience, and in some displays (e.g. vehicle displays) with specific applications, other screens such as center control or front copilot, besides the right-facing dashboard, the viewing angle is usually not right-looking, resulting in poor driving look (lower influence of brightness), whereas traditional optical films usually use a symmetric triangular symmetric prism structure (θ 1＝θ2). However, such designs may have viewing angle limitations in certain specific application scenarios. Disclosure of utility model The utility model overcomes the defects of the prior art and provides a composite optical film to solve the problems in the prior art. In order to achieve the purpose, the technical scheme adopted by the utility model is that the composite optical film comprises an optical film and a plurality of protruding structures, wherein the protruding structures are positioned on the surface of the optical film, the protruding structures are asymmetric prism structures, an angle theta 1 and an angle theta 2 are formed between the protruding structures and the optical film, the angle theta 1 is 20 degrees < theta 1 <60 degrees, and the sum of the angle theta 1 and the angle theta 2 is smaller than 120 degrees. In a preferred embodiment of the present utility model, the optical film is a PET substrate film or a pre-processing film. In a preferred embodiment of the present utility model, the protruding structures are uniformly distributed on the surface of the optical film. In a preferred embodiment of the present utility model, the protrusion structure is integrally formed with the optical film. The utility model solves the defects existing in the background technology, and has the following beneficial effects: The composite optical film adopts an asymmetric prism structure, meets the brightness enhancement requirement of a specific visual angle, effectively combines the brightness orientation, stray light control and picture softening functions through the precision press printing process treatment, shows excellent optical performance and mechanical durability, and is suitable for application of the composite optical film in the directions of vehicle-mounted, virtual reality, medical treatment and the like. Drawings The utility model is further described below with reference to the drawings and examples; FIG. 1 is a schematic view of the overall structure of a preferred embodiment of the present utility model; In the figure, 10 parts of optical film, 20 parts of convex structure, 30 parts of angle theta 1, 40 parts of