Abstract: A display device includes a base layer; a first pattern disposed on the base layer; an insulating layer disposed on the first pattern and including layers; and a second pattern disposed on the insulating layer. At least two of the layers of the insulating layer include a same material.

Abstract: A folding processing apparatus for battery cells includes a folding tool assembly including a first folding processing tool configured to fold a sealing portion of a first battery cell when the folding tool assembly is transferred forward in a first direction, a second folding processing tool disposed offset from the first folding processing tool and configured to fold a sealing portion of a second battery cell when the folding tool assembly is transferred in a reverse direction opposite to the first direction, and a mounting plate on which the first folding processing tool and the second folding processing tool are mounted; and an assembly transferring tool configured to transfer the folding tool assembly.

Abstract: The present invention relates to a battery cell of a secondary battery, and more particularly, to a battery cell inspection device and system for deciding whether a battery cell is good or bad based on a bent degree of a bend formed on one side surface of the battery cell.

Abstract: Provided is a tape inspection device. The tape inspection device according to the present invention includes: a vision unit for acquiring imaging information by imaging a tape attached to an outer wall of a secondary battery in order to fix a folding portion of the secondary battery; a light reflection unit disposed to be spaced apart from the secondary battery and reflecting light; and an optical path compensation unit disposed between the vision unit and the light reflection unit and compensating for an optical path between the tape and the vision unit.