In digital signage production, even tiny impurities, like dust particles, can become "time bombs" affecting product quality. For example, during the manufacturing process of LCD panels, if dust particles land on the panel, they become "fixed" inside after subsequent encapsulation processes. When the digital signage is powered on, bright spots, dark spots, or areas of display abnormality will appear where these dust particles were, significantly impacting the display quality. If used in high-end displays, such as professional design monitors or high-definition television screens, these defects will be easily noticed by users, severely reducing product quality and user experience.

Let's compare the quality of digital signage products manufactured in dusty and clean environments. Digital signage manufactured in ordinary dusty environments may have a defect rate as high as 10% or even higher due to interference from dust, particles, and other contaminants. These defective products not only require additional costs for testing and screening, but the rejected defective products also result in a waste of raw materials. Digital signage produced in a cleanroom benefits from a near-perfectly pure production environment, effectively controlling the defect rate to below 1% and significantly improving the yield. This not only increases production efficiency and reduces costs but also reliably guarantees product quality and stability, allowing consumers to enjoy higher-quality display products.

To ensure that every digital signage unit meets high-quality standards, we have established a comprehensive, multi-layered quality inspection and monitoring system. In the raw material procurement stage, each batch of raw materials, including glass substrates, liquid crystal materials, and color filters, undergoes rigorous inspection to test their physical, chemical, and optical properties. For example, the flatness, thickness uniformity, and light transmittance of the glass substrate are tested, and the purity, viscosity, and dielectric constant of the liquid crystal material are analyzed. Only qualified raw materials are allowed to enter the production stage. During the production process, multiple quality inspection points are set up for real-time monitoring of semi-finished products. After the array process is completed, optical microscopes and electron microscopes are used to inspect the pattern accuracy, line quality, short circuits, and open circuits of the thin-film transistor array. After liquid crystal filling, a polarizing microscope is used to observe the arrangement of liquid crystal molecules and check the uniformity of liquid crystal filling.

After the driver chip is bonded, professional testing equipment is used to test the electrical connection between the chip and the LCD panel to ensure normal signal transmission. In the finished product testing stage, even stricter testing standards and methods are adopted. Comprehensive testing is conducted on the display performance indicators of the digital signage, such as brightness, contrast, color saturation, response time, and viewing angle, to ensure that it meets product specifications. Simultaneously, reliability tests are performed, such as high-temperature aging tests, low-temperature storage tests, and damp heat tests, simulating the product's condition under different usage environments and conditions to verify its stability and durability.

From the widespread application of digital signage in daily life to the rigorous control of every precision process in cleanrooms, from the full support of advanced equipment and technology to the comprehensive protection of a strict personnel management and quality monitoring system, we profoundly demonstrate our focus and dedication to LCD production. In this display field full of opportunities and challenges, we leverage the superior advantages of our cleanroom to continuously improve product quality and provide customers with the highest quality digital signage products.