With the continuous advancement of technology, injection-molded light guide plates have been widely used in various fields due to their unique advantages. This article will thoroughly explore the characteristics and innovative applications of injection-molded light guide plates, revealing their important position and development trends in modern technology.
High Production Efficiency: The injection molding process injects molten plastic material into the mold under high pressure and then cools and solidifies it to form the product. It has the characteristics of a short molding cycle and high production efficiency, enabling mass production.
Flexible Design of Light Guide Points: The light guide points can be designed according to the light sources of different manufacturers or different luminous conditions. They can also be flexibly designed according to the different usage requirements of customers to achieve different usage effects.
Excellent Optical Performance: It can convert a linear light source into a uniform surface light source with even light distribution and high light conversion efficiency. Compared with traditional plates, it can improve by more than 30%. For example, the light guide plate for the liquid crystal backlight of Nalux is produced by injection molding, which accurately transfers the fine prism pattern made by machining on the mold and can effectively control the emission area and intensity.
Diverse Material Selection: Common materials for light guide plates include polymethyl methacrylate (PMMA) and polycarbonate (PC). Different materials have different physical and optical properties, and appropriate materials can be selected according to specific application requirements. For example, PMMA has good transparency, chemical stability, and weather resistance; PC has good light transmission performance, dimensional stability, and can withstand a wide temperature range.
Thin-Wall Capability: With the development of technology, the thickness of injection-molded light guide plates has gradually decreased, meeting the market demand for thin and lightweight products.
Low Cost: The injection molding process is mature, with high production efficiency and no need for additional processes such as carving or printing. The production cost is relatively low, and it has high cost performance.
Technological Innovation: By drawing on the injection compression process in the light guide plate industry, the stress marks (rainbow marks) in transparent PC injection molding are significantly eliminated, improving the color matching and texture effect display of mobile phone casings.
Application Prospects: This process is not only applicable to mobile phone casings but can also be extended to other products that require a transparent and high-quality appearance, such as smartwatches and smart glasses.
Technological Innovation: Covestro and Changtian Technology jointly launched the LM807 polycarbonate light guide plate for automotive applications, combined with UV micro-dot printing technology, achieving high brightness, low color deviation, and high reliability.
Application Prospects: This light guide plate provides high-performance, high-design freedom, and high-production efficiency solutions on the basis of ensuring stable product quality, meeting the development needs of automotive integration, intelligence, electrification, and informatization.
Technological Innovation: Dongguan Hengsheng Optoelectronic Technology Co., Ltd. has successfully obtained a patent for a "light guide plate injection molding gate automatic cutting mechanism". This mechanism includes a linear transmission component, a guide component, a pressing component, and a cutting component, enabling the conveyance and cutting of light guide plates without manual intervention.
Application Prospects: This technology significantly improves the automation level of light guide plate production, increases production efficiency, and reduces human errors, making it suitable for large-scale production.
Technological Innovation: The new composite light guide plate material separates the phosphor in the LED lamp of the panel light and places it in the diffusion plate, and combines the light guide plate, diffusion plate, and reflective layer into one, with the advantages of uniform light output, good luminous efficiency, and reduced overall material thickness.
Application Prospects: This material is suitable for various lighting devices that require high luminous efficiency and low thickness, such as ultra-thin LED panel lights and backlights.
Global Market Growth: According to the statistics and forecasts of QYR (QYResearch), the global market sales of injection molding machines for light guide plates reached $216 million in 2023 and are expected to reach $304 million in 2030, with a compound annual growth rate (CAGR) of 4.7% (2024 - 2030).
Chinese Market Development: The Chinese market for injection molding machines for light guide plates has shown a stable growth trend from 2019 to 2024 and is expected to continue to grow from 2025 to 2030.
Expansion of Application Areas: The application areas of light guide plates are constantly expanding, gradually extending from traditional fields such as liquid crystal display backlighting, automotive interior lighting, and household appliance indicator lights to emerging fields such as medical equipment, industrial endoscopes, and smart wearable devices.
In conclusion, injection-molded light guide plates not only perform excellently in traditional application fields but also show great potential in technological innovation and market expansion. They are expected to be widely used in more fields in the future.
Worldbound Group, a group enterprise specializing in precision mold design and manufacturing and precision injection molding products production, has 5 factories in Vietnam with a total area of 200,000 square meters and 7 factories in Dongguan, Guangzhou and other places in China, providing a full range of one-stop plastic and metal processing and customization services. Welcome to visit.
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