Method of measuring adhesive strength

    公开(公告)号:US11668642B2

    公开(公告)日:2023-06-06

    申请号:US17182707

    申请日:2021-02-23

    CPC classification number: G01N19/04 G01N2203/0091

    Abstract: A method of measuring adhesive strength includes setting an evaluation time (te), fixing a substrate and an adhesive member to a measurement device, pulling the adhesive member fixed to the measurement device with a first measurement force (Fe1) for the evaluation time (te), pulling the adhesive member fixed to the measurement device is pulled with a second measurement force (Fe2), which is obtained by increasing the first measurement force (Fe1) by a preset amount, for the evaluation time (te), and determining a reference measurement force (Fes) which is a static force applied to the adhesive member when a distance by which a first portion of the adhesive member is detached from the substrate is equal to a preset distance (dt) is determined.

    Display device
    6.
    发明授权

    公开(公告)号:US11497123B2

    公开(公告)日:2022-11-08

    申请号:US17233871

    申请日:2021-04-19

    Abstract: A display device includes a display panel, a printed circuit board (PCB), and a flexible printed circuit board (FPCB). The display panel includes a first pad portion. The PCB includes a second pad portion. The FPCB includes a first end portion and a second end portion. The first end portion is connected to the first pad portion, and the second end portion is connected to the second pad portion. The second pad portion includes a first pad group and a second pad group, each including a plurality of test pads. One test pad of the first pad group is connected to one test pad of the second pad group.

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