DISPLAY DEVICE

• US 20100321624A1
• Filed: 06/16/2010
• Published: 12/23/2010
• Est. Priority Date: 06/17/2009
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Hitachi Displays Limited (Japan Display Incorporated)
• Inventors: Yanagisawa, Syou
• Granted Patent: US 8,629,965 B2
• Time in Patent Office: Days
• US Class Current: 349/152
• CPC Class Codes: G02F 1/1309 Repairing; Testing
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13458 Terminal pads

Abstract

First terminals and second terminals, which are terminals of adjacent terminal wires, are staggered in the direction in which wires run, and transparent conductive films provided to the first terminals and second terminals extend so as to overlap the terminal wires outside the regions in which contact holes are created and are formed so as to have a width narrower than the width of the terminal wires in the regions where contact holes are created.

Claims

1. A display device, comprising:

a substrate having a display region so that signal lines formed within said display region are connected to respective terminals in a terminal group formed outside said display region via terminal wires; and

an IC driver having bumps respectively facing and being connected to said terminals via an isotropic conductive film, characterized in that

said terminals are arranged in multiple staggered places in the direction in which said terminal wires run,

in the case where one of the adjacent terminals, which are located at the same position, is a first terminal and the other is a second terminal, the regions where said first terminal and said second terminal are formed have a first portion of a terminal wire that is wider than the other portion and a second portion of the terminal wire which is adjacent to said first portion in the direction in which said terminal wire runs, and the first portion and the second portion in the region where said first terminal is formed and the first portion and the second portion in the region where said second terminal is formed are staggered,

said first terminal and said second terminal are formed of a transparent conductive film made of a wide portion for covering the contact hole created above the first portion of the terminal wire and a narrow portion provided so as to overlap the second portion of the terminal wire from above,

the other terminal wire adjacent to said first portion is formed so as to be bent in order to avoid interference with said first portion, and

the bump of said IC driver connected to said first terminal has a wide portion corresponding to the wide portion of said first terminal and a narrow portion corresponding to the narrow portion of said first terminal, and the bump of said IC driver connected to said second terminal has a wide portion corresponding to the wide portion of said second terminal and a narrow portion corresponding to the narrow portion of said second terminal.

2. The display device according to claim 1, characterized in that said terminal wires are formed in the same layer.

3. The display device according to claim 1, characterized in that said terminal wires are formed of a gate metal.

4. The display device according to claim 1, characterized in that said terminal wires are formed of an SD metal.

5. The display device according to claim 1, characterized in that the wide portion and the narrow portion of the bump connected to the terminal corresponding to said first terminal and the wide portion and the narrow portion of the bump connected to the terminal corresponding to said second terminal are staggered.

6. The display device according to claim 1, characterized in that said transparent conductive film is formed of ITO.

7. A display device, wherein

signal lines running within a display region are connected to terminals formed outside said display region via terminal wires, and

said terminals include first terminals and second terminals which are staggered in the direction in which the terminal wires run, characterized in that

the first terminal wires having said first terminals comprise a first SD metal running from said display region side, a first gate metal and a first transparent conductive film so that said first transparent conductive film covers a first contact hole created in a wide portion of said first SD metal and a second contact hole created in a wide portion of said first gate metal and is connected to said first SD metal and said first gate metal so as to form a first crossover portion,

said first terminals are formed by making said first transparent conductive film run so as to have a width narrower than the width of the regions where said first contact hole and said second contact hole are created,

the second terminal wires having said second terminals comprise a second gate metal running from said display region side, a second SD metal and a second transparent conductive film so that said second transparent conductive film covers a third contact hole created in a wide portion of said second gate metal and a fourth contact hole created in a wide portion of said second SD metal and is connected to said second gate metal and said second SD metal so as to form a second crossover portion,

said second terminals are formed by making said second transparent conductive film run so as to have a width narrower than the width of the regions where said third contact hole and fourth contact hole are created,

said first crossover portions in adjacent first terminal wires are staggered in the direction in which said first terminal wires run, and second terminal wires adjacent to said first crossover portion are formed so as to be bent in order to avoid interference with said first crossover portions, and

said second crossover portions in adjacent second terminal wires are staggered in the direction in which said second terminal wires run, and first terminal wires adjacent to said second crossover portion are formed so as to be bent in order to avoid interference with said second crossover portions.

8. The display device according to claim 7, characterized in that bumps formed on an IC driver face and are connected to said first transparent conductive film formed in a region other than the region where a first contact hole and a second contact hole are created in a first terminal and said second transparent conductive film formed in a region other than the region where a third contact hole and a fourth contact hole are created in a second terminal, respectively.

9. The display device according to claim 7, characterized in that said first terminal said first terminal runs towards said second terminal and said second terminal runs towards said first terminal.

10. The display device according to claim 7, characterized in that pixels with thin film transistors are formed in said display region, the gate electrode of said thin film transistors is formed of said gate metal, and the source/drain electrodes of said thin film transistors are formed of said SD metal.

11. A display device, wherein

a number of signal lines running within a display region respectively lead out to terminals in a terminal group formed outside said display region via terminal wires, and at the same time, connected to thin film transistors for inspection which are operable to be connected to wires for inspection, and

said terminals include at least first terminals and second terminals which are provided so that adjacent terminals are staggered in the direction in which terminal wires run, characterized in that

first terminal wires having said first terminals are formed where a gate metal running from said display region side is switched to an SD metal, the switching portion being made of a transparent conductive film for covering both a first contact hole created in a wide portion of said gate metal adjacent to said SD metal and a second contact hole created in a wide portion of said SD metal adjacent to said gate metal,

said first terminals are formed of said transparent conductive film overlapping said first terminal wire outside the region where said first contact hole and said second contact hole are created so as to run with a width narrower than that of the region where said first contact hole and said second contact hole are created,

the second terminal wires having said second terminals are formed of an SD metal running from said display region side,

said second terminals are formed of a transparent conductive film connected through a third contact hole created in a wide portion of said SD metal overlapping said SD metal in a region where said third contact hole is created so as to extend with a width narrower than that of the region where said contact hole is created,

said switching portions of said first terminal wires are provided so as to be staggered in the direction in which said first terminal wires run, and the second terminal wires adjacent to said switching portions are formed so as to be bent in order to avoid interference with said switching portions, and

regions of said second terminal wires where said third contact holes are created are provided so as to be staggered in the direction in which said second terminal wires run, and the first terminal portions adjacent to the regions where said third contact holes are created are formed so as to be bent in order to avoid interference with the regions where said third contact holes are created.

12. The display device according to claim 11, characterized in that bumps formed on an IC driver respectively face and are connected to said transparent conductive film formed in the first terminals in a region other than the region where a first contact hole and a second contact hole are created and respectively face and are connected to said transparent conductive film formed in the second terminals in a region other than the region where a third contact hole and a fourth contact hole are created.

13. The display device according to claim 11, characterized in that said first terminals run towards said second terminals side, and said second terminals run towards said first terminals side.

14. The display device according to claim 11, characterized in that pixels with thin film transistors are formed in said display region, the gate electrode of said thin film transistors is formed of said gate metal, and the source/drain electrodes of said thin film transistors are formed of said SD metal.

15. A display device, wherein

a number of signal lines running within a display region lead out to terminals in a terminal group formed outside said display region via terminal wires,

said terminals include at least first terminals and second terminals which are provided so as to be staggered in the direction in which terminal wires run, and

said terminal wires are formed of a metal in the same layer, characterized in that

first terminal wires having said first terminals have a wide portion, and said first terminals are formed of a transparent conductive film connected through a first contact hole created in said wide portion of said first terminal wires overlapping said terminal wire outside the region where said first contact hole is created so as to run towards said second terminals side with a width narrower than that of the region where said first contact hole is created,

second terminal wires having said second terminals have a wide portion, and said second terminals are formed of a transparent conductive film connected through a second contact hole created in said wide portion of said second terminal wires overlapping said terminal wire outside the region where said second contact hole is created so as to run towards said first terminals side with a width narrower than that of the region where said second contact hole is created,

the regions of said first terminal wires in which said first contact holes are created are provided so as to be staggered in the direction in which said first terminal wires run, and the second terminal wires adjacent to the regions in which said first contact holes are created are formed so as to be bent in order to avoid interference with the region in which said first contact holes are created, and

the regions of said second terminal wires in which said second contact holes are created are provided so as to be staggered in the direction in which said second terminal wires run, and the first terminal wires adjacent to the regions in which said second contact holes are created are formed so as to be bent in order to avoid interference with the region in which said second contact holes are created.

16. The display device according to claim 15, characterized in that bumps formed on an IC driver respectively face and are connected to said transparent conductive film formed in the first terminals in a region other than the region where a first contact hole and a second contact hole are created and respectively face and are connected to said transparent conductive film formed in the second terminals in a region other than the region where a third contact hole and a fourth contact hole are created.

17. The display device according to claim 15, characterized in that said first terminals run towards said second terminals side, and said second terminals run towards said first terminals side.

18. The display device according to claim 15, characterized in that pixels with thin film transistors are formed in said display region, the gate electrode of said thin film transistors is formed of said gate metal, and the source/drain electrodes of said thin film transistors are formed of said SD metal.