Method and apparatus for testing flat display apparatus
AssigneeLG. Philips LCD Co., Ltd.
InventorsSung Joon Bae, Jong Dam Kim, Hyun Kyu Lee, Yong Jin Cho, See Hwa Jeong
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Abstract
A method and apparatus tests a flat display device to inspect for shorts and open circuits in a signal wire by using a magnetic sensor. The inspection method and apparatus scans the magnetic sensor along signal wires in a scan direction crossing multiple signal wires and detects at least one of a short or an open circuit in the signal wires based on current detected by the magnetic sensor.
Claims24
An inspection method for a flat display device, comprising:
- scanning signal wires by using a magnetic sensor along a scan direction crossing a plurality of the signal wires;
- and
- detecting at least one of a short or an open circuit in the signal wires based on a current of the signal wires detected by the magnetic sensor.
An inspection method, which comprises:
- providing a flat display device having at least one of first signal wires and at least one of second signal wires stacked on the first signal wire, and an insulation layer is located between the first and the second signal wires;
- scanning the second signal wires along a first scan direction crossing the first signal wires and a second scan direction crossing the second signal wires by using a magnetic sensor;
- and
- detecting an interlayer short on the signal wires based on a current of the signal wires detected by the magnetic sensor.
An inspection method for a flat display device, comprising:
- scanning signal wires by using a magnetic sensor along a scan direction proceeding in a zig-zag pattern;
- and
- detecting a short in the signal wires based on a current of the signal wires detected by the magnetic sensor.
An apparatus for inspecting a flat display device, comprising:
- a magnetic sensor for scanning on signal wires along a scan direction crossing a plurality of the signal wires;
- and
- a detection circuit for detecting at least one of a short or an open circuit on the signal wires, the detection circuit being formed based on current of the signal wires detected by the magnetic sensor.
An inspection apparatus for a flat display device having at least one of a first signal wire, an insulation layer over the first signal wire, and a second signal wire over the insulation layer, the inspection apparatus comprising:
- a magnetic sensor for scanning the first and the second signal wires along a first scan direction crossing the first signal wire and a second scan direction crossing the second signal wire;
- and
- a detection circuit for detecting an interlayer short in the signal wires based on a current of the signal wires detected by the magnetic sensor.
An inspection apparatus for a flat display device, comprising:
- a magnetic sensor for scanning signal wires along a scan direction proceeding in a zig-zag pattern between adjacent signal wires;
- and
- a detection circuit for detecting a short on the signal wires based on a current of the signal wires detected by the magnetic sensor.
Dependencies are inferred from the claim text.