Abstract
The wide color‐gamut TFT‐LCD is easy to appear green mura after illuminated by various lights, and seriously affect the visual result of TFT‐LCD. By studying the electrical‐optical properties of color resin, the results show that Phthalocyanine type of G pigment in green color resin is the main factor of green mura, and the mura degree is strongly associated with the content of the G pigment. Such pigment has conjugated structure and semiconductor property. Electron migration in light state leads to the increase of dielectric loss factor and the influence of the coupling electric field of TFT‐LCD, which leads to the different brightness of RGB pixel, and forms the green mura. High sensitivity photo‐initiator in color resin can improve green mura of TFT‐LCD, but the degree of improvement is very limited. The novel pigment G can reduce the proportion of G to Y in green resin and show the best green mura result. Through mechanism analysis and experimental verification of the green mura of TFT‐LCD, the component management standard of color resin material is established, and the evaluation system of the green mura of TFT‐LCD is also set up.
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