Display device

• US 10,466,837 B2
• Filed: 01/22/2019
• Issued: 11/05/2019
• Est. Priority Date: 06/08/2012
• Status: Active Grant

• Current Assignee: Japan Display Incorporated
• Original Assignee: Japan Display Incorporated
• Inventors: Matsumoto, Shuuichirou
• Primary Examiner(s): Rosario, Nelson M
• Application Number:
  US16/253,379
• Publication Number:
  US 20190155442A1
• Time in Patent Office: 287 Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• 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: G02F 1/136295 Materials; Compositions; Manufacture processes
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

In a liquid crystal display device, a second substrate includes a detection electrode of a touch panel, pixels include pixel electrodes and counter electrodes, the counter electrodes are divided into a plurality of blocks, the counter electrodes of the divided blocks are provided in common to the pixels on a plurality of display lines being side by side, the counter electrodes of the divided blocks are used as scanning electrodes of the touch panel as well, the liquid crystal display device includes a semiconductor chip configured to supply a counter voltage and a touch panel scanning voltage to the counter electrodes of the divided blocks, the semiconductor chip includes a first terminal group formed on a side of a display area side configured by the plurality of pixels.

Claims

1. A display device comprising:

a first substrate including a plurality of pixel electrodes, a plurality of touch electrodes, a plurality of video lines extending along a first direction and supplying a video signal, and a row of connecting terminals extending along a second direction,

wherein

the plurality of touch electrodes is used as a touch driving electrode,

the row of connecting terminals includes a first partial row having a plurality of first terminals arranged in the second direction and a second partial row having a plurality of second terminals arranged in the second direction,

the plurality of first terminals connects to the plurality of touch electrodes,

the plurality of second terminals connects to the plurality of video lines,

the row of connecting terminals has end portions at both end of the row of connecting terminals, and

the first partial row is located closer to one of the end portions than the second partial row in the second direction.

2. The display device according to claim 1, wherein

the first substrate includes a plurality of pixel transistors, a plurality of scanning lines for supplying a scanning voltage to the pixel transistors, and a scanning line driving circuit configured to supply the scanning voltage to the plurality of scanning lines.

3. The display device according to claim 2, wherein

a plurality of scanning line driving circuit wirings are electrically connected with the scanning line driving circuit.

4. The display device according to claim 3, wherein

a plurality of third terminals electrically connects with the plurality of scanning line driving circuit wirings respectively.

5. The display device according to claim 4, wherein

the first substrate includes a second row of connecting terminals that has the plurality of third terminals.

6. The display device according to claim 1, further comprising a semiconductor chip,

wherein

the semiconductor chip electrically connects with the plurality of first terminals and the plurality of second terminals.

7. The display device according to claim 6, wherein

the plurality of first terminals forms both ends of the row of connecting terminals.

8. A display device comprising:

a display panel including a display area;

a plurality of pixels including a pixel electrode, and arranged in a matrix shape for forming the display area;

a plurality of touch electrodes;

a plurality of video lines extending along a first direction and supplying a video signal;

a plurality of touch signal lines extending along the first direction; and

a row of connecting terminals formed outer area of the display area,

wherein

the row of connecting terminals extends along a second direction that is perpendicular to the first direction,

the row of connecting terminals includes a first partial row having a plurality of first terminals arranged in the second direction and a second partial row having a plurality of second terminals arranged in the second direction,

the plurality of first terminals connects to the plurality of touch signal lines,

the plurality of second terminals connects to the plurality of video lines,

the row of connecting terminals has end portions at both end of the row of connecting terminals, and

the first partial row is located closer to one of the end portions than the second partial row in the second direction.

9. The display device according to claim 8,

further comprising a plurality of scanning lines for inputting a scanning voltage to the pixels and formed above the first substrate,

a scanning line driving circuit configured to supply the scanning voltage to the plurality of scanning lines, and

a plurality of scanning line driving circuit wirings electrically connecting with the scanning line driving circuit, and extending along the first direction.

10. The display device according to claim 9, wherein

a plurality of third terminals electrically connects with the plurality of scanning line driving circuit wirings respectively.

11. The display device according to claim 8, further comprising a semiconductor chip,

wherein the semiconductor chip electrically connects with the plurality of first terminals and the plurality of second terminals.

12. A display device comprising:

a display panel including a display area;

a plurality of pixels including a pixel electrode, and arranged in a matrix shape for forming the display area;

a plurality of touch electrodes disposed in the display area;

a plurality of video lines extending along a first direction and supplying a video signal;

a plurality of touch signal lines extending along the first direction;

a plurality of scanning lines for inputting a scanning voltage to the pixels;

a scanning line driving circuit configured to supply the scanning voltage to the plurality of scanning lines;

a plurality of scanning line driving circuit wirings electrically connecting with the scanning line driving circuit, and extending along the first direction; and

a first row and a second row of connecting terminals formed outer area of the display area,

wherein

the first and second row of connecting terminals extend along a second direction that is perpendicular to the first direction,

the first row of connecting terminals includes a first partial row having a plurality of first terminals arranged in the second direction and a second partial row having a plurality of second terminals arranged in the second direction,

the plurality of first terminals connects to the plurality of touch electrodes,

the plurality of second terminals connects to the plurality of video lines,

a plurality of third terminals of the second row of connecting terminals connects to the plurality of scanning line driving circuit wirings,

the first row of connecting terminals has end portions at both end of the first row of connecting terminals, and

the first partial row is located closer to one of the end portions than the second partial row in the second direction.

13. The display device according to claim 12, wherein

the plurality of third terminals of the second row of connecting terminals includes a power source input terminal.

14. The display device according to claim 12, further comprising a main flexible printed circuit board, wherein

the main flexible printed circuit board electrically connects with the second row of connecting terminals.

15. The display device according to claim 12, further comprising a semiconductor chip,

wherein the semiconductor chip electrically connects with the plurality of first terminals and the plurality of second terminals.