Active matrix substrate and display device

• US 10,083,667 B2
• Filed: 12/06/2017
• Issued: 09/25/2018
• Est. Priority Date: 01/21/2013
• Status: Active Grant

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Fujikawa, Yohsuke
• Primary Examiner(s): Mengistu, Amare
• Assistant Examiner(s): ZUBAJLO, JENNIFER L
• Application Number:
  US15/832,850
• Publication Number:
  US 20180108313A1
• Time in Patent Office: 293 Days
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G09G 2310/0202 Addressing of scan or signal lines
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

An active matrix substrate includes a plurality of signal lines, each of which includes first and second line portions and an inner connection portion (connection portion) that connects the first and second line portions. The first and second line portions of one of two adjacent signal lines are made of first and second conductive layers, respectively, and the first and second line portions of the other of the two adjacent signal lines are made of second and first conductive layers, respectively. The position of the connection portion of each of the signal lines is determined in accordance with the layout position of that signal line in the line region.

Claims

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 on 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 plurality of switching elements, wherein

a 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 the 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,

a position of the connection portion of each of the plurality of signal lines is determined in accordance with a layout position of the respective signal line in the line region,

a plurality of the first line portions extend at a first predetermined angle with respect to one side of the matrix region,

a plurality of the second line portions extend at a second predetermined angle with respect to one side of the matrix region,

an arrangement interval of the connection portions is narrower than an arrangement interval at one end of the plurality of video signal lines on the matrix region side, and

the connection portions are arranged on an oblique line extending with respect to one side of the matrix region.

2. The active matrix substrate according to claim 1, wherein the first predetermined angle and the second predetermined angle are equal to each other.

3. The active matrix substrate according to claim 1, wherein the connection portions are arranged on an oblique line so that the connection portions are positioned closer to one side of the matrix region in a direction from one end toward a center of the matrix region.

4. The active matrix substrate according to claim 1, wherein the connection portions are arranged on an oblique line so that the connection portions are positioned closer to one side of the matrix region in increments of Δ

b per pitch.