Flexible PEDOT touch screen and curved surface touch module

By introducing an encapsulation structure of Al2O3/HfO3 superlattice film and UV absorption layer into the PEDOT touchscreen, combined with a self-healing polyurethane substrate and graphene quantum dot layer, the stability problem of the PEDOT touchscreen in humid and UV environments is solved, and the high transmittance and conductivity are improved.

CN223679630UActive Publication Date: 2025-12-16TRULY OPTO ELECTRONICS
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Patent Information

Application Number
CN202520267992.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-19
Publication Date
2025-12-16
Estimated Expiration
2035-02-19

AI Technical Summary

Technical Problem

PEDOT touchscreens exhibit poor stability in humid and UV environments, and existing packaging structures cannot effectively improve their performance under high humidity and light conditions.

Method used

The encapsulation structure combines an Al2O3/HfO3 superlattice film layer with a UV absorption layer, along with a self-healing polyurethane substrate and a graphene quantum dot layer, to enhance the blocking and absorption capabilities against water vapor and UV light, thus protecting the PEDOT electrode layer.

Benefits of technology

In humid and UV environments, it improves the transmittance and conductivity of PEDOT touchscreens, ensuring the stability and durability of the electrode layer.

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Abstract

The utility model discloses a flexible PEDOT (poly (3, 4-ethylenedioxythiophene)) touch screen. The flexible PEDOT touch screen comprises a polymer substrate; the Al2O3 / HfO3 superlattice film layer is arranged on the upper surface of the polymer substrate; the PEDOT electrode layer is arranged on the upper surface of the Al2O3 / HfO3 superlattice film layer; and the UV absorption layer is arranged on the upper surface of the PEDOT electrode layer. The flexible PEDOT touch screen still has relatively high stability in a humid and UV environment. The utility model further discloses a curved surface touch module which comprises the flexible PEDOT touch screen.
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