Coaters are indispensable core production equipment in the optical film and display industry. From smartphones and tablets to large liquid crystal displays (LCDs), many functional optical film layers inside these devices rely on precision coaters for manufacturing. By uniformly applying functional optical adhesives and coating materials onto the surface of substrates, coaters endow films with properties such as brightness enhancement, anti-glare, hardening, and anti-fingerprint.

In the production of brightness enhancement films (BEF) and prism films, coaters are used to apply precision optical microstructural layers. Through high-precision slot die coating or micro-gravure coating technology, coaters can form uniform resin coatings on optical substrates like PET. These coatings then undergo UV curing or thermal curing to form specific micro-prism structures, which effectively improve the brightness and uniformity of backlight modules. The stability of coaters directly determines the yield and performance of optical film products.

The manufacturing of touchscreen sensors also depends on coater technology. When producing ITO (indium tin oxide) films or metal mesh transparent conductive films, it is necessary to use coaters to uniformly apply conductive material solutions or nano-silver pastes onto flexible or rigid substrates. The coating uniformity and defect control capability of coaters directly affect the conductivity, light transmittance, and reliability of touch sensors. High-precision coaters are key to realizing mass production of large-size, low-resistance, and high-transmittance touchscreens.

Furthermore, in cutting-edge fields such as flexible displays (OLED) and quantum dot displays (QLED), coaters are being used to apply functional films like encapsulation layers and quantum dot color conversion layers. These processes place extreme demands on coaters in terms of environmental cleanliness, coating precision, and drying/curing processes, driving the development of coater technology to a higher level.