Electrooptical device and illumination device

Patent metadata

Field	Value
Publication number	US-2024103324-A1
Application number	US-202318370996-A
Country	US
Kind code	A1
Filing date	Sep 21, 2023
Priority date	Sep 28, 2022
Publication date	Mar 28, 2024
Grant date	—

Abstract

An electrooptical device includes a first substrate, a first electrode disposed on the first substrate, a second substrate facing the first substrate, a second electrode disposed on the second substrate, and a liquid crystal layer positioned between the first substrate and the second substrate. The first substrate includes a first terminal, a second terminal, a first conductive portion electrically coupled to the first terminal, and a second conductive portion electrically coupled to the second terminal, the second substrate includes a third conductive portion electrically coupled to the second electrode, and a fourth conductive portion electrically coupled to the third conductive portion, and the electrooptical device further includes a first coupling member electrically coupling the first conductive portion and the third conductive portion, and a second coupling member electrically coupling the second conductive portion and the fourth conductive portion.

First claim

What is claimed is:

1 . An electrooptical device comprising:
a first substrate; a first electrode disposed on the first substrate; a second substrate facing the first substrate; a second electrode disposed on the second substrate; and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the first substrate includes
a first terminal,
a second terminal,
a first conductive portion electrically coupled to the first terminal, and
a second conductive portion electrically coupled to the second terminal,
the second substrate includes
a third conductive portion electrically coupled to the second electrode, and
a fourth conductive portion electrically coupled to the third conductive portion, and
the electrooptical device further includes
a first coupling member electrically coupling the first conductive portion and the third conductive portion, and
a second coupling member electrically coupling the second conductive portion and the fourth conductive portion.

2 . The electrooptical device according to claim 1 , wherein
the first substrate further includes
a third terminal electrically coupled to the first terminal through the first conductive portion,
a fourth terminal, and
a fifth conductive portion electrically coupled to the fourth terminal,
the second substrate further includes a sixth conductive portion electrically coupled to the third conductive portion, and the electrooptical device further includes a third coupling member electrically coupling the fifth conductive portion and the sixth conductive portion.

3 . The electrooptical device according to claim 2 , wherein the first substrate further includes
a first terminal group including the first terminal and the second terminal, and a second terminal group including the third terminal and the fourth terminal.

4 . The electrooptical device according to claim 1 , further comprising a first discharge resistor, wherein
the first electrode and the second electrode are electrically coupled to each other through the first discharge resistor.

5 . The electrooptical device according to claim 4 , wherein
the first substrate further includes a seventh conductive portion electrically coupled to the first electrode, the second substrate further includes an eighth conductive portion electrically coupled to the seventh conductive portion, the first discharge resistor is disposed on the second substrate, and the eighth conductive portion is electrically coupled to the second electrode through the first discharge resistor.

6 . The electrooptical device according to claim 1 , further comprising:
a second discharge resistor; and a third electrode disposed on the first substrate, wherein the first electrode and the third electrode are electrically coupled to each other through the second discharge resistor.

7 . The electrooptical device according to claim 6 , wherein
the first substrate further includes
a seventh conductive portion electrically coupled to the first electrode, and
a ninth conductive portion electrically coupled to the third electrode,
the second substrate further includes
an eighth conductive portion electrically coupled to the seventh conductive portion, and
a tenth conductive portion electrically coupled to the ninth conductive portion,
the second discharge resistor is disposed on the second substrate, and the tenth conductive portion is electrically coupled to the eighth conductive portion through the second discharge resistor.

8 . An illumination device comprising:
the electrooptical device according to claim 1 ; and a light source configured to emit light toward the electrooptical device.

Assignees

• Japan Display Inc

Inventors

• Hirabayashi Yukiya
• Kobayashi Osamu
• Takeuchi Shunpei

Classifications

• G02F1/1345 Primary

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/13471 Primary

  in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells (G02F1/13475 takes precedence) · CPC title