Flexible display device

The flexible display device addresses corrosion issues in GIP wiring by using polyimide to fill gaps in the planarization layer, improving productivity and reducing bezel width in flexible electroluminescent displays.

JP7877530B2Active Publication Date: 2026-06-22LG DISPLAY CO LTD
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Patent Information

Application Number
JP2025035215
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-12-06
Filing Date
2025-03-06
Publication Date
2026-06-22
Estimated Expiration
2043-11-28

AI Technical Summary

Technical Problem

Existing flexible electroluminescent display devices face corrosion defects in the GIP wiring section due to the use of photoacrylic as a planarization layer, which limits the reduction of bezel width and affects productivity.

Method used

A flexible display device design that includes a substrate with distinct areas for display and non-display, using photoacrylic as a planarization layer in non-bending areas and polyimide to fill gaps in bending areas, reducing corrosion and improving productivity.

Benefits of technology

The solution effectively reduces corrosion in GIP wiring sections while maintaining productivity by using polyimide to fill gaps in the planarization layer, enhancing the bezel width reduction in flexible display devices.

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Abstract

To provide a display device improving poor corrosion quality of a GIP wiring part while increasing productivity.SOLUTION: A flexible display device includes: a board including a display area divided into an optical area and a general area, and a non-display area divided into a bending area and a non-bending area; a first insulation film disposed on the board; a wire disposed on the first insulation film of the non-bending area; a second insulation film disposed on the wire; a connection wire that is disposed on the second insulation film in the non-bending area and has a first contact area connected to the wire; a first flattening layer disposed on the connection wire; and a link wire that is disposed on the first flattening layer and extends to the bending area, and has a second contact area connected to the connection wire.SELECTED DRAWING: Figure 1a
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Citation Information

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