Patent ID: 11966546
Assignee: E INK CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A fabrication method of a light guide touch module, comprising:
forming a light guide module, comprising:
providing a light guide plate;
directly disposing a cover structure on the light guide plate, wherein a material of the light guide plate comprises thermoplastic polyurethanes;
forming a circuit shielding layer on an upper surface of the light guide plate;
forming a hard coating layer or an anti-glare layer on the upper surface of the light guide plate; and
forming a dot structure on a lower surface of the light guide plate;

forming a touch sensing layer, comprising:
providing a base layer, wherein the base layer comprises a colorless polyimide layer and a water vapor barrier layer;
forming a first sensing electrode on the base layer;
forming a first insulating layer on the first sensing electrode;
forming a second sensing electrode on the first insulating layer; and
forming a second insulating layer on the second sensing electrode;

attaching the dot structure in the light guide module to the second insulating layer by means of an adhesive layer such that the adhesive layer contacts the dot structure and the second insulating layer; and
disposing a display panel on a surface of the water vapor barrier layer facing away from the colorless polyimide layer such that an upper electrode of the display panel contacts the surface of the water vapor barrier layer, and the upper electrode is located between an electronic ink layer of the display panel and the water vapor barrier layer.