Display device, liquid crystal display device, and organic EL display device

Patent metadata

Field	Value
Publication number	US-11067864-B2
Application number	US-201916299194-A
Country	US
Kind code	B2
Filing date	Mar 12, 2019
Priority date	Mar 16, 2018
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

An embodiment of the present invention provides a display device which allows for the area of a wiring diverting region to be reduced. The display device (1) includes: a substrate (100) having a displaying region (30) and a non-displaying region (10); a plurality of first switching elements (TFT1, TFT2); a plurality of gate lines (50) each of which is respectively connected to a gate of one or more of the plurality of first switching elements; a plurality of second switching elements (TFT3); a plurality of sub gate lines (60) each of which is respectively connected to a gate of one or more of the plurality of second switching elements; and one or more connecting lines (70) each of which connects a respective one of the plurality of gate lines (50) to a respective one of the plurality of sub gate lines (60).

First claim

The invention claimed is:

1. A display device comprising:
a substrate having a displaying region and a non-displaying region;
a plurality of first switching elements;
a plurality of gate lines each of which is respectively connected to a gate of one or more of the plurality of first switching elements;
a plurality of second switching elements;
a plurality of sub gate lines each of which is respectively connected to a gate of one or more of the plurality of second switching elements;
one or more connecting lines each of which connects a respective one of the plurality of gate lines to a respective one of the plurality of sub gate lines;
one or more source lines; wherein
the one or more connecting lines are provided in a layer differing from both (i) a layer in which the plurality of gate lines are provided an (ii) a layer in which the one or more source lines are provided.

2. The display device according to claim 1 , wherein the displaying region exists peripherally to at least a part of a perimeter of the non-displaying region.

3. The display device according to claim 1 , wherein:
the substrate includes a wiring diverting region provided between the displaying region and the non-displaying region; and
none of the plurality of sub gate lines exist in the wiring diverting region.

4. The display device according to claim 1 , wherein the layer in which the one or more connecting lines are provided includes one or more power supply lines to which an initialization voltage is applied.

5. The display device according to claim 1 , wherein each one of the one or more connecting lines connects one gate line, of the plurality of gate lines, to one sub gate line, of the plurality of sub gate lines, which one sub gate line is positioned downstream of the one gate line in terms of scan order.

6. A liquid crystal display device comprising the display device recited in claim 1 ,
wherein each of the plurality of second switching elements is connected to a respective one of a plurality of storage capacitors.

7. An organic EL display device comprising the display device recited in claim 1 ,
wherein each of the plurality of second switching elements is connected to a respective one of a plurality of wires to which a constant electric potential is supplied.

8. A display device comprising:
a substrate having a displaying region and a non-displaying region;
a plurality of first switching elements;
a plurality of gate lines each of which is respectively connected to a gate of one or more of the plurality of first switching elements;
a plurality of second switching elements;
a plurality of sub gate lines each of which is respectively connected to a gate of one or more of the plurality of second switching elements;
one or more connecting lines each of which connects a respective one of the plurality of gate lines to a respective one of the plurality of sub gate lines;
one or more source lines; and
a plurality of storage capacitor lines which are connected to each other via one or more common connecting lines.

9. The display device according to claim 8 , wherein the displaying region exists peripherally to at least a part of a perimeter of the non-displaying region.

10. The display device according to claim 8 , wherein:
the substrate includes a wiring diverting region provided between the displaying region and the non-displaying region; and
none of the plurality of sub gate lines exist in the wiring diverting region.

11. The display device according to claim 8 , wherein the one or more common connecting lines are positioned opposite to the non-display region with respect to corresponding one of the one or more collecting lines.

12. The display device according to claim 8 , wherein each one of the one or more connecting lines connects one gate line, of the plurality of gate lines, to one sub gate line, of the plurality of sub gate lines, which one sub gate line is positioned downstream of the one gate line in terms of scan order.

13. An organic EL display device comprising the display device recited in claim 8 ,
wherein each of the plurality of second switching elements is connected to a respective one of a plurality of wires to which a constant electric potential is supplied.

14. A display device comprising:
a substrate having a displaying region and a non-displaying region;
a plurality of first switching elements;
a plurality of gate lines each of which is respectively connected to a gate of one or more of the plurality of first switching elements;
a plurality of second switching elements;
a plurality of sub gate lines each of which is respectively connected to a gate of one or more of the plurality of second switching elements;
one or more connecting lines each of which connects a respective one of the plurality of gate lines to a respective one of the plurality of sub gate lines; and
a reflective electrode layer; wherein
the one or more connecting lines are provided in the reflective electrode layer.

15. The display device according to claim 14 , wherein the displaying region exists peripherally to at least a part of a perimeter of the non-displaying region.

16. The display device according to claim 14 , wherein:
the substrate includes a wiring diverting region provided between the displaying region and the non-displaying region; and
none of the plurality of sub gate lines exist in the wiring diverting region.

17. The display device according to claim 14 , wherein each one of the one or more connecting lines connects one gate line, of the plurality of gate lines, to one sub gate line, of the plurality of sub gate lines, which one sub gate line is positioned downstream of the one gate line in terms of scan order.

18. An organic EL display device comprising the display device recited in claim 14 ,
wherein each of the plurality of second switching elements is connected to a respective one of a plurality of wires to which a constant electric potential is supplied.

Assignees

• Sharp Kk

Inventors

• Yoshida Masahiro

Classifications

• H10D86/481

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• H10D86/443

  adapted for preventing breakage, peeling or short circuiting · CPC title

• H10D86/423 Primary

  comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D30/6755

  Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate · CPC title