Flexible hybrid cover window and method of manufacturing same
AssigneeUti Inc.
InventorsKukhyun SUNWOO, Tea Joo HA, Hee Jun AHN, Seok Pil JIN, Jae Suk OH, Joo Seok LEE
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Abstract
Proposed are a hybrid flexible cover window and a method of manufacturing the same. The hybrid flexible cover window includes a flat portion formed on a flat area of a flexible display and a folding portion which is formed in succession to the flat portion and formed in a folding area of the flexible display. The hybrid flexible cover window includes a substrate, a transparent polyimide layer formed on the glass substrate, and an adhesive buffer layer formed between the glass substrate and the TPI layer, in which the TPI layer has a UV cut-off wavelength of less than 380 nm.
Claims17
A method of manufacturing a flexible hybrid cover window comprising a flat portion formed to a flat area of a flexible display panel and a folding portion formed to a folding area of the flexible display panel connected to the flat portion, the method comprising:
- a first step of loading a glass substrate on a carrier substrate;
- a second step of forming an adhesive buffer layer on the glass substrate;
- a third step of forming a transparent polyimide (TPI) layer on the adhesive buffer layer,
- a fourth step of curing the adhesive buffer layer by applying ultraviolet rays to either the glass substrate or the TPI layer or to both the glass substrate or the TPI layer to form a hybrid structure comprising a hybrid structure composed of TPI layer/adhesive buffer layer/glass substrate;
- and
- a fifth step of separating the hybrid structure from the carrier substrate;
- wherein the TPI layer has an ultraviolet cut-off wavelength of 380 nm or less.
Dependencies are inferred from the claim text.