Patent ID: 11877384
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A flexible circuit board in a non-display region of a display panel with a driving circuit for driving the display panel provided thereon, the flexible circuit board comprising a first main body portion, a second main body portion, and a foldable portion; the foldable portion being between the first main body portion and the second main body portion; wherein
the foldable portion is capable of being bent to fold the second main body portion such that the second main body portion overlaps the first main body portion,
the flexible circuit board comprises a first surface and a second surface opposing to each other,
the first main body portion has an overlapping region and a non-overlapping region, a region where the second main body portion overlaps the first main body portion after the foldable portion is bent being the overlapping region, and a region where the second main body portion does not overlap the first main body portion after the foldable portion is bent being the non-overlapping region,
the flexible circuit board further comprises a first adhesive, a second adhesive, and a third adhesive,
the first adhesive is on the second surface, corresponds to the first main body portion, and in the non-overlapping region,
the second adhesive is on the second surface, corresponds to the first main body portion, and is in the overlapping region,
the third adhesive is on the first surface, corresponds to the second main body portion, and covers the second main body portion, and
none of the first adhesive, the second adhesive and the third adhesive is on two sides of the foldable portion,
when the second main body portion overlaps the first main body portion after the foldable portion is bent, the second main body portion is attached to the first main body portion through the second adhesive in the overlapping region, and a surface of the first adhesive distal to the first surface is on the same plane as a surface of the third adhesive distal to the first surface,
when the foldable portion is fold, an orthographic projection of the first adhesive on the first main body portion and an orthographic projection of the third adhesive on the first main body portion completely cover the second surface of the first main body portion, and the orthographic projection of the first adhesive on the first main body portion is complementary to the orthographic projection of the third adhesive on the first main body portion,
the flexible circuit board further comprises a first electro-magnetic interference protection layer and a second electro-magnetic interference protection layer both configured to shield electromagnetic interference,
the first electro-magnetic interference protection layer comprises a first portion and a second portion separated apart from each other,
the first portion is on the first surface and corresponds to the first main body portion, the second portion is on the first surface and corresponds to the second main body portion, and the third adhesive is on a side of the second portion of the first electro-magnetic interference protection layer away from the second surface,
the second electro-magnetic interference protection layer is on the second surface and corresponds to the first main body portion, and the first adhesive is on a side of the second electro-magnetic interference protection layer away from the first surface,
none of the first electro-magnetic interference protection layer and the second electro-magnetic interference protection layer is on the first surface and the second surface of the foldable portion, and
no electro-magnetic interference protection layer is on the second surface of the second main body portion.