Display device and electronic device

Patent metadata

Field	Value
Publication number	US-11852939-B2
Application number	US-202318093167-A
Country	US
Kind code	B2
Filing date	Jan 4, 2023
Priority date	Jan 21, 2022
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

A display device includes a first substrate, a second substrate, a first electrically conductive portion and a second electrically conductive portion disposed between the first substrate and the second substrates. The first substrate includes a first line, a second line, a first connection electrode projecting from the first line toward the second line, and a second connection electrode projecting from the second line toward the first line. The second substrate includes a first electrode, a third connection electrode electrically connected to the first electrode and disposed to overlap the first connection electrode, a second electrode, and a fourth connection electrode electrically connected to the second electrode and disposed to overlap the second connection electrode. The first electrically conductive portion overlaps and contacts the first connection electrode and the third connection electrode. The second electrically conductive portion overlaps and contacts the second connection electrode and the fourth connection electrode.

First claim

The invention claimed is:

1. A display device comprising:
a first substrate including
a first line,
a second line disposed at a distance from the first line and extending in an extending direction and parallel to the first line,
a first connection electrode projecting from the first line toward the second line, and
a second connection electrode projecting from the second line toward the first line and being disposed such that the second connection electrode and the first connection electrode are arranged in the extending direction;

a second substrate disposed opposite the first substrate and including
a first electrode,
a third connection electrode that is electrically connected to the first electrode and disposed to overlap the first connection electrode,
a second electrode, and
a fourth connection electrode that is electrically connected to the second electrode and disposed to overlap the second connection electrode and disposed such that the fourth connection electrode and the third connection electrode are arranged in the extending direction;

a first electrically conductive portion disposed between the first substrate and the second substrate to overlap the first connection electrode and the third connection electrode, the first electrically conductive portion being contacted with the first connection electrode and the third connection electrode; and
a second electrically conductive portion disposed between the first substrate and the second substrate to overlap the second connection electrode and the fourth connection electrode, the second electrically conductive portion being contacted with the second connection electrode and the fourth connection electrode.

2. The display device according to claim 1 , wherein
the first substrate has side edges,
the first line includes first lines that extend along the side edges, respectively,
the second line includes second lines that extend along the side edges, respectively,
the first connection electrode includes first connection electrodes that project from each of the first lines,
the second connection electrode includes second connection electrodes that project from each of the second lines,
the third connection electrode includes third connection electrodes that are disposed to overlap the first connection electrodes, respectively,
the first electrically conductive portion includes first electrically conductive portions that are disposed to overlap the first connection electrodes, respectively,
the fourth connection electrode includes fourth connection electrodes that are disposed to overlap the second connection electrodes, respectively, and
the second electrically conductive portion includes second electrically conductive portions that are disposed to overlap the second connection electrodes, respectively.

3. The display device according to claim 2 , further comprising:
a liquid crystal layer sandwiched between the first substrate and the second substrate; and
a sealing member disposed between the first substrate and the second substrate to surround and seal the liquid crystal layer, wherein
the first lines and the second lines extend parallel to the sealing member,
the first connection electrodes, the second connection electrodes, the third connection electrodes, and the fourth connection electrodes are disposed to overlap the sealing member, and
the first electrically conductive portions and the second electrically conductive portions are included in the sealing member.

4. The display device according to claim 2 , wherein the first connection electrodes and the second connection electrodes are alternately arranged in the extending direction.

5. The display device according to claim 1 , wherein
the first substrate and the second substrate include a display area in which an image is displayed and a non-display area that surrounds the display area,
the first electrode and the second electrode partially overlap in the display area,
the second substrate includes an insulation film at least between a portion of the first electrode and a portion of the second electrode that are overlapped with each other,
the first line is supplied with a common potential, and
the second line is supplied with a ground potential.

6. The display device according to claim 5 , wherein
the first electrode is disposed in an upper layer than the second electrode via the insulation film,
the third connection electrode is disposed in a same layer as the second electrode and a portion of the third connection electrode overlaps the first electrode,
the insulation film includes a contact hole at a portion that overlaps the portion of the first electrode and the portion of the third connection electrode that are overlapped with each other, and the first electrode and the third connection electrode are electrically connected via the contact hole, and
the fourth connection electrode is disposed in a same layer as the second electrode and continuous to an edge of the second electrode.

7. The display device according to claim 6 , wherein
the third connection electrode includes a non-overlapping portion that does not overlap the first electrically conductive portion,
the fourth connection electrode includes a non-overlapping portion that does not overlap the second electrically conductive portion, and
the insulation film covers at least the non-overlapping portion of the third connection electrode and the non-overlapping portion of the fourth connection electrode.

8. The display device according to claim 5 , wherein
the first electrode is disposed in an upper layer than the second electrode via the insulation film,
the third connection electrode includes
a first lower layer electrode portion that is disposed in a same layer as the second electrode, and
a first upper layer electrode portion that is disposed in a same layer as the first electrode and continuous to the first electrode and disposed to overlap the first lower layer electrode portion,

the fourth connection electrode includes
a second lower layer electrode portion that is disposed in a same layer as the second electrode and continuous to the second electrode, and
a second upper layer electrode portion that is disposed in a same layer as the first electrode and disposed to overlap the second lower layer electrode portion,

the insulation film includes a first contact hole at a portion that overlaps the first lower layer electrode portion and the first upper layer electrode portion, and the first lower layer electrode portion and the first upper layer electrode portion are electrically connected via the first contact hole, and
the insulation film includes a second contact hole at a portion that overlaps the second lower layer electrode portion and the second upper layer electrode portion, and the second lower layer electrode portion and the second upper layer electrode portion are electrically connected via the second contact hole.

9. The display device according to claim 8 , wherein
the second substrate includes
a lower layer line that is disposed in a same layer as the second electrode and extends in the extending direction and is continuous to an end portion of the second lower layer electrode portion, and
an upper layer line that is disposed in a same layer as the first electrode and extends in the extending direction and is continuous to an end portion of the second upper layer electrode portion and disposed to overlap the lower layer line, and

the insulation film includes a third contact hole at a portion that overlaps the lower layer line and the upper layer line, and the lower layer line and the upper layer line are electrically connected via the third contact hole.

Assignees

• Sharp Display Technology Corp

Inventors

• YONEBAYASHI Ryo

Classifications

• G02F1/1339

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F1/13452

  Conductors connecting driver circuitry and terminals of panels · CPC title

• G02F1/1345

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/133354 Primary

  Arrangements for aligning or assembling substrates · CPC title