Display device, inspection method for display device, and inspection device for display device

1. A display device comprising:

an effective display section composed of a plurality of display pixels;

a first wiring line group that is disposed on one end side of a peripheral part, which is located on an outside of the effective display section, and that comprises wiring lines connected to odd-number-th scan lines, to which driving signals for turning on/off the display pixels on odd-number-th rows are supplied;

a second wiring line group that is disposed on the other end side of the peripheral part, and comprises wiring lines connected to even-number-th scan lines, to which driving signals for turning on/off the display pixels on even-number-th rows are supplied;

a first inspection wiring line that is connected to first wiring lines of the first wiring line group;

a second inspection wiring line that is connected to second wiring lines of the first wiring line group, which neighbor the first wiring lines;

a third inspection wiring line that is connected to third wiring lines of the second wiring line group; and

a fourth inspection wiring line that is connected to fourth wiring lines of the second wiring line group, which neighbor the third wiring lines,

wherein the effective display section is provided on a liquid crystal display panel in which a liquid crystal layer is interposed between an array substrate and a counter-substrate,

wherein the first to fourth inspection wiring lines are disposed on an extension part of the array substrate, which extends outward beyond an end portion of the counter-substrate,

further comprising a driving IC chip that is disposed at a position corresponding to an area where the first to fourth inspection wiring lines are disposed, and

wherein the driving IC chip includes a first driving unit that supplies the driving signals to the odd-number-th scan lines, a second driving unit that supplies the driving signals to the even-number-th scan lines, and a signal line driving section that is sandwiched between the first driving unit and the second driving unit.

2. The display device according to claim 1 , wherein one end portion of each of the first to fourth inspection wiring lines is provided with an input pad that enables input of a driving signal.

3. An inspection method for a display device, the display device comprising:

an effective display section composed of a plurality of display pixels;

a first wiring line group that is disposed on one end side of a peripheral part, which is located on an outside of the effective display section, and that comprises wiring lines connected to odd-number-th scan lines, to which driving signals for turning on/off the display pixels on odd-number-th rows are supplied; and

a second wiring line group that is disposed on the other end side of the peripheral part, and comprises wiring lines connected to even-number-th scan lines, to which driving signals for turning on/off the display pixels on even-number-th rows are supplied,

the inspection method comprising:

inputting a first inspection signal to a first inspection wiring line, which is connected to first wiring lines of the first wiring line group, and to a second inspection wiring line that is connected to second wiring lines of the first wiring line group, which neighbor the first wiring lines, and inputting a second inspection signal to a third inspection wiring line, which is connected to third wiring lines of the second wiring line group, and to a fourth inspection wiring line that is connected to fourth wiring lines of the second wiring line group, which neighbor the third wiring lines;

inspecting, on the basis of the input of the first and second inspection signals, a wiring defect in the odd-number-th scan lines and the even-number-th scan lines in the effective display section; inputting the first inspection signal to the first inspection wiring line and the third inspection wiring line, and inputting the second inspection signal to the second inspection wiring line and the fourth inspection wiring line; and

inspecting, on the basis of the input of the first and second inspection signals, a wiring defect in the first wiring line group and a wiring defect in the second wiring line group.

4. An inspection device for a display device, the display device comprising:

an effective display section composed of a plurality of display pixels;

a first wiring line group that is disposed on one end side of a peripheral part, which is located on an outside of the effective display section, and that comprises wiring lines connected to odd-number-th scan lines, to which driving signals for turning on/off the display pixels on odd-number-th rows are supplied; and

a second wiring line group that is disposed on the other end side of the peripheral part, and comprises wiring lines connected to even-number-th scan lines, to which driving signals for turning on/off the display pixels on even-number-th rows are supplied,

the inspection device comprising:

signal generating means for generating inspection signals; and signal input means for inputting the inspection signals, which are generated by the signal generating means, respectively to a first inspection wiring line that is connected to first wiring lines of the first wiring line group, to a second inspection wiring line that is connected to second wiring lines of the first wiring line group, which neighbor the first wiring lines, to a third inspection wiring line that is connected to third wiring lines of the second wiring line group, and to a fourth inspection wiring line that is connected to fourth wiring lines of the second wiring line group, which neighbor the third wiring lines,

wherein the signal generating means generates a first inspection signal and a second inspection signal, and

the signal input means inputs, in a first inspection step, the first inspection signal to the first inspection wiring line and the second inspection wiring line and the second inspection signal to the third inspection wiring line and the fourth inspection wiring line, and inputs, in a second inspection step, the first inspection signal to the first inspection wiring line and the third inspection wiring line and the second inspection signal to the second inspection wiring line and the fourth inspection wiring line.

5. The inspection device according to claim 4 , further comprising:

a first probe that is connectable to an input pad provided at one end of the first inspection line;

a second probe that is connectable to an input pad provided at one end of the second inspection line;

a third probe that is connectable to an input pad provided at one end of the third inspection line; and

a fourth probe that is connectable to an input pad provided at one end of the fourth inspection line.

6. A display device having a first effective display section composed of a plurality of display pixels, the display device comprising:

a connection pad that is capable of connecting a second effective display section composed of a plurality of display pixels;

a first wiring line group that is disposed on one end side of a peripheral part, which is located on an outside of the first effective display section, and that comprises a plurality of wiring lines, to which driving signals for turning on/off the display pixels of the first effective display section are supplied;

a second wiring line group that is disposed on the other end side of the peripheral part, and comprises a plurality of wiring lines, which supply driving signals for turning on/off the display pixels of the second effective display section via the connection pad;

a first inspection wiring line that is connected to first wiring lines of the second wiring line group; and

a second inspection wiring line that is connected to second wiring lines of the second wiring line group, which neighbor the first wiring lines

wherein the wiring lines of the second wiring line group are connected to scan lines of the second effective display section via the connection pad.

7. The display device according to claim 6 , wherein one end portion of each of the first and second inspection wiring lines is provided with an input pad that enables input of a driving signal.

8. The display device according to claim 6 , further comprising a flexible print circuit board that is electrically connected to the second effective display section via the connection pad.

9. A display device having a first effective display section composed of a plurality of display pixels, the display device comprising:

a connection pad that is capable of connecting a second effective display section composed of a plurality of display pixels;

a first wiring line group that is disposed on one end side of a peripheral part, which is located on an outside of the first effective display section, and that comprises a plurality of wiring lines, to which driving signals for turning on/off the display pixels of the first effective display section are supplied;

a second wiring line group that is disposed on the other end side of the peripheral part, and comprises a plurality of wiring lines, which supply driving signals for turning on/off the display pixels of the second effective display section via the connection pad;

a first inspection wiring line that is connected to first wiring lines of the second wiring line group; and

a second inspection wiring line that is connected to second wiring lines of the second wiring line group, which neighbor the first wiring lines,

wherein signal lines of the first effective display section are connected to signal lines of the second effective display section via the connection pad.