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Method for detecting substrate crack, substrate, and detection circuit

  • US 9,983,452 B2
  • Filed: 07/15/2014
  • Issued: 05/29/2018
  • Est. Priority Date: 07/15/2014
  • Status: Active Grant
First Claim
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1. An electronic terminal, comprising:

  • a liquid crystal display comprising a thin film transistor (TFT) substrate,wherein the TFT substrate comprises a glass substrate,wherein a non-closed test line having an opening is peripherally disposed on the glass substrate along an edge of the glass substrate,wherein the opening is formed by two end points of the test line,wherein one of the two end points is grounded,wherein the opening is located in an interference fit flexible printed circuit board on glass (FOG) bonding region between a flexible printed circuit board and the glass substrate,wherein the two end points of the opening are electrically connected to a first connector interface by using the flexible printed circuit board,wherein the first connector interface is configured to electrically connect to a connector interface of a detection circuit, andwherein the detection circuit is configured to measure whether the test line is on or off to determine whether an edge of the TFT substrate has a crack or chip.

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