A photosensitive water-borne overcoat comprising poly(vinyl alcohol), a glycoluril crosslinker, and a water-soluble photoacid generator was developed. The passivation coating has two features: low-temperature processability and applicability to organic-solvent-susceptible films. Photo-exposure and subsequent baking at 85 °C and development with water produced PGMEA-insoluble and transparent overcoat patterns. Uncured color patterns that were susceptible to the PGMEA-based coating solution remained intact after water-based overcoat application. By exploiting the features of the passivation coating, color patterns of green, red, and white were produced onto a glass substrate at a process temperature of 85 °C.

开发了一种包含聚（乙烯醇）、甘脲交联剂和水溶性光酸产生剂的光敏水性外涂层。钝化涂层具有两个特点：低温加工性和对有机溶剂敏感薄膜的适用性。曝光和随后在 85°C 下烘烤并用水显影产生 PGMEA 不溶性和透明涂层图案。对基于 PGMEA 的涂层溶液敏感的未固化颜色图案在水性外涂层应用后保持完整。通过利用钝化涂层的特性，在85°C的工艺温度下，在玻璃基板上产生绿色、红色和白色的彩色图案。