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Active matrix substrate and display device

  • US 9,870,744 B2
  • Filed: 01/16/2014
  • Issued: 01/16/2018
  • Est. Priority Date: 01/21/2013
  • Status: Active Grant
First Claim
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1. An active matrix substrate comprising:

  • a plurality of data lines and a plurality of scanning lines that are arranged in a matrix;

    a plurality of switching elements that are provided one each at a corresponding crossing of the plurality of data lines with the plurality of scanning lines; and

    a plurality of pixels that include pixel electrodes connected to the switching elements, whereina plurality of terminals are provided to input external signals to the plurality of data lines or the plurality of scanning lines,a plurality of signal lines are defined in a line region between a matrix region in which the plurality of data lines and the plurality of scanning lines are arranged in a matrix and a terminal region in which the plurality of terminals are arranged, and the line region is defined so that a line pitch becomes narrower in a direction from the matrix region to the terminal region,one end of each of the plurality of signal lines is connected to drive the data line or the scanning line, and the other end is connected to one of the plurality of terminals,each of the plurality of signal lines includes a first line portion provided on a matrix region side, a second line portion provided on a terminal region side, and a connection portion that connects the first line portion and the second line portion,the first line portion and the second line portion of one of two adjacent signal lines of the plurality of signal lines are made of a first conductive layer and a second conductive layer, respectively, which are different from each other, and the first line portion and the second line portion of the other of the two adjacent signal lines are made of the second conductive layer and the first conductive layer, respectively, anda position of the connection portion of each of the plurality of signal lines is determined in accordance with a layout position of that signal line in the line region,the plurality of signal lines are defined in the line region so as to be in any of a first line group, a second line group, and a third line group that are arranged in descending order of interconnection length in the line region,in the first line group, a plurality of the connection portions are arranged parallel to one side of the matrix region,in the second line group, a plurality of the connection portions are arranged at a predetermined angle with respect to one side of the matrix region so as to gradually get closer to the matrix region, andin the third line group, a plurality of the connection portions are arranged at a predetermined angle with respect to one side of the matrix region so as to gradually move away from the matrix region.

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