China's Display Technology Achieves New Breakthrough: Tongxingda's Revolutionary Patent Drives Innovation in Screen - to - Body Ratio of Smart Devices

On April 15, 2025, Tongxingda (stock code: 002845), a Chinese liquid crystal display manufacturer, obtained a utility model patent authorization titled "A Display Module for Reducing FPC Bending Size" (patent number: CN202420659846.5). 

This marks a significant breakthrough in China's display technology in the optimization of screen - to - body ratio for smart devices. This innovation not only provides technical support for the design innovation of consumer electronics such as smartphones and tablets but also highlights the technological competitiveness of Chinese display manufacturers in the global display industry chain.Technical Breakthrough: From Structural Optimization to User Experience UpgradeThe core of this patent lies in solving the physical limitations of traditional display modules through structural design innovation. Specifically, Tongxingda adopts a chamfer or round corner design at the connection between the liquid crystal glass and the flexible printed circuit (FPC). This allows the adhesive to penetrate along the edge during curing, controlling the protruding size after FPC bending within the range of 0.25 - 0.5 millimeters, which is approximately 30% smaller than traditional designs. This improvement significantly increases the screen - to - body ratio, further narrows the device bezel, reduces the process risk of adhesive overflow, and simplifies the production process.

In terms of technical applications, this breakthrough directly responds to consumers' demands for high screen - to - body ratio and thin - light devices in the 5G era. For example, the display area of smartphones can be expanded by 3% - 5%. Combined with high - refresh - rate screen technology, it brings users a more immersive gaming and video experience. In addition, the optimized module structure also enhances the durability and portability of devices, providing a differentiated competitive technical path for display touch screen manufacturers.Industry Background: Reconstructing the Global Competitiveness of Chinese Liquid Crystal DisplaysCurrently, Chinese liquid crystal display manufacturers are reshaping the global market pattern through technological innovation and production capacity integration. Although the LCD technology faces challenges from emerging technologies such as Mini - LED backlight in the large - size TV panel field, it still dominates the small - and medium - size smart device market. Data shows that the global shipment volume of LCD smartphone panels is expected to reach 1.45 billion pieces in 2025, accounting for more than 75% of the overall market. Tongxingda's patent technology comes at the right time. By improving the integration and aesthetics of LCD modules, it consolidates the advantages of Chinese enterprises in the small - and medium - size display field.

It is worth noting that the professional layout of Chinese display touch screen manufacturers in segmented fields is also remarkable. Enterprises such as CNK have established in - depth cooperation with leading brands like Haier and Desai by virtue of their R & D capabilities in small - and medium - size display modules, with their products covering medical, in - vehicle, and smart home scenarios. Tongxingda's technical breakthrough may trigger a chain reaction in the industry, prompting more manufacturers to accelerate R & D investment in screen - to - body ratio optimization technologies.Market Impact: From Cost Advantages to Building Technical BarriersTongxingda's patent is not only the result of technological innovation but also a microcosm of the transformation of China's display industry from "scale expansion" to "technology leadership". In 2024, Tongxingda's R & D investment reached 163 million yuan. Although the number of patent authorizations decreased by 38.1% year - on - year, the strategy of focusing on core technologies has enhanced its technical barriers. This path complements the strategies of leading enterprises such as BOE and TCL Huaxing to expand LCD production capacity through mergers and acquisitions, jointly building the diversified competitiveness of China's display industry.

From the perspective of market application prospects, this technology can be extended to fields such as in - vehicle displays and wearable devices. For example, in the design of smart car central control screens, narrower bezels can improve the concentration of driving information display; in AR/VR devices, high screen - to - body ratio modules can reduce device weight and optimize user experience. According to industry forecasts, the global in - vehicle display market size will exceed $10 billion in 2025, and Chinese manufacturers are expected to seize a higher share through technological iteration.Future Challenges and ProspectsDespite the broad technical prospects, Chinese display manufacturers still need to deal with multiple challenges:

1. Pressure of technological iteration: OLED and Micro - LED technologies continue to impact the LCD market, requiring differentiated innovation to maintain competitiveness;

2. Supply chain collaboration: The precision of display modules puts forward higher requirements for upstream materials (such as ultra - thin FPC), and industry chain collaboration needs to be strengthened urgently;

3. Patent layout: The global patent competition in display technologies is intensifying, and a more perfect patent moat needs to be built to cope with international frictions.

Tongxingda's breakthrough injects new momentum into China's display industry, and its technical path may become an industry standard, promoting display touch screen manufacturers to shift from "cost - driven" to "technology - driven". With the evolution of smart devices towards ultra - thin and borderless, the global influence of Chinese liquid crystal displays is expected to be further enhanced, adding another milestone case for "Made in China 2025".

About CNK

Founded in Shenzhen in 2010, CNK Electronics (CNK in brief) expanded the world leading factory in Longyan, Fujian in 2019. It is a specialized and innovative enterprise specializing in the design, development, production and sales of display products. CNK provides customers with a full range of cost-effective small and medium-sized display modules, solutions, and services with excellent quality worldwide. Oriented in technology and high quality, CNK keeps sustainable development, works to offer customers  better and stable services.