METHOD FOR MANUFACTURING DISPLAY DEVICE

• Main Authors: NISHIZAWA SHIGEKI, OKAZAKI NATSUKO, OTA TAKUHEI, HIRAISHI KATSUFUMI, HAYASHI NOBUYUKI, WANG HONGYUAN
• Format: Patent
• Language: English; Japanese
• Published: 09.11.2017
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To provide a method by which, after a prescribed functional layer is formed on a flexible substrate preliminarily integrated with a support body, the flexible substrate can be easily separated from the support body, and thereby, a display device can be easily obtained.SOLUTION: The method includes: a step of forming a flexible substrate on a support body by applying a resin solution on the support body; a step of forming a functional layer on the flexible substrate; and a step of removing the support body from the flexible substrate where the functional layer is formed. A peel strength between the support body and the flexible substrate in a functional layer-forming region where the functional layer is to be formed is 200 N/m or less and 0.1 N/m or more. A peel preventing part to prevent peeling of the flexible substrate from the support body is formed by a peel preventing layer adhered to straddle between a peripheral edge of the flexible substrate and the support body, and thereby, after separating the peel preventing part from the flexible substrate in the functional layer-forming region, the support body is removed from the flexible substrate.SELECTED DRAWING: Figure 4 【課題】予め支持体と一体化されたフレキシブル基板に対して、所定の機能層を形成した後、支持体からフレキシブル基板を容易に分離できて、表示装置を簡便に得ることができる方法を提供する。【解決手段】支持体上に樹脂溶液を塗布して支持体上にフレキシブル基板を形成する工程、フレキシブル基板上に機能層を形成する工程、及び機能層が形成されたフレキシブル基板から支持体を除去する工程を含み、機能層が形成される機能層形成領域のフレキシブル基板と支持体との剥離強度が２００Ｎ/ｍ以下０．１Ｎ／ｍ以上であり、前記フレキシブル基板の周縁部と支持体との間を跨るように接着させた剥離防止層により、フレキシブル基板が支持体から剥離されるのを防止する剥離防止部を形成しておくことで、剥離防止部と機能層形成領域のフレキシブル基板とを分離した後、フレキシブル基板から支持体を除去する。【選択図】図４