Foldable AMOLED display employing all-in-one substrate and auxiliary means
View Patent ↗The present invention relates to an AMOLED display, more specifically, to an AMOLED display employing an ultra-thin all-in-one substrate and an auxiliary supporting means to achieve true foldable display devices.
1. A foldable OLED polyimide backplane fabrication process comprising:
a. roll-to-roll film web process, and
b. panel-by-panel conveyer process,
wherein the roll-to-roll film web process guides a polyimide precursor PAA solution casting into a web, stretching into a quarter wave retarder and drying into a roll of polyamic acid film; wherein the panel-by-panel process allows the polyamic acid film to laminate onto a polyimide precursor coated glass panel, to post-cure into a polyimide film on a hot-plate station and proceed to carry out an AMOLED production; wherein the polyimide film is finally peeled off from the glass panel; whereby the foldable OLED polyimide backplane fabrication process turns out a predetermined foldable display panel.
2. The foldable OLED polyimide backplane fabrication process as in claim 1 , wherein the polyimide precursor coated glass panel is a non-birefringence homogeneous polyamic acid thin film.
3. The foldable OLED polyimide backplane fabrication process as in claim 1 , wherein the roll-to-roll film web process is a continuous polyimide retardation film production line.