Flexible wiring board and light control unit

Patent metadata

Field	Value
Publication number	US-12593398-B2
Application number	US-202418411513-A
Country	US
Kind code	B2
Filing date	Jan 12, 2024
Priority date	Jul 14, 2021
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

A flexible wiring board includes an insulating layer having a support surface extending in a first direction; a first sheet adhesive terminal positioned on the support surface; and a second sheet adhesive terminal positioned on the support surface. The shape of the first sheet adhesive terminal and the shape of the second sheet adhesive terminal are point-symmetric about a point on a straight fold line on which straight guide lines extending in the first direction lie.

First claim

The invention claimed is:

1 . A flexible wiring board, comprising:
an insulating layer having a support surface extending in a first direction; a first sheet adhesive terminal positioned on the support surface and extending in the first direction; and a second sheet adhesive terminal positioned on the support surface and extending in the first direction, wherein a shape of the first sheet adhesive terminal and a shape of the second sheet adhesive terminal are point-symmetric about a point on a straight fold line extending in the first direction, and the insulating layer includes a first support piece that supports the first sheet adhesive terminal and is extending in the first direction, and a second support piece that supports the second sheet adhesive terminal and is extending in the first direction, a part of the first support piece that connects to the second support piece is a tip end part of the first support piece in the first direction, a part of the second support piece that connects to the first support piece is a base end part of the second support piece in the first direction, and the flexible wiring board includes a weakened part on a boundary between the tip end part and the base end part.

2 . The flexible wiring board according to claim 1 , wherein
the weakened part is formed on the straight fold line and configured to induce the flexible wiring board to fold along the straight fold line.

3 . The flexible wiring board according to claim 2 , wherein the first support piece includes a first folded part that includes the tip end part of the first support piece in the first direction and is extending in the first direction, and a first terminal support part in which the first sheet adhesive terminal is positioned, the first folded part is formed on a side of the straight fold line opposite to a side on which the first terminal support part is positioned and includes a wiring extending in the first direction from the first sheet adhesive terminal to the second sheet adhesive terminal, and the flexible wiring board includes the weakened part on a boundary between the first folded part and the first terminal support part.

4 . The flexible wiring board according to claim 3 , wherein the second support piece includes a second folded part that includes the base end part of the second support piece in the first direction and is extending in the first direction, and a second terminal support part in which the second sheet adhesive terminal is positioned, the second folded part is positioned on a side of the straight fold line opposite to a side on which the second terminal support part is positioned and includes a wiring extending in the first direction from the second sheet adhesive terminal to the first sheet adhesive terminal, and the flexible wiring board includes the weakened part on a boundary between the second folded part and the second terminal support part.

5 . The flexible wiring board according to claim 1 , wherein the first support piece includes a first folded part that includes the tip end part of the first support piece in the first direction and is extending in the first direction, and a first terminal support part in which the first sheet adhesive terminal is positioned, the first folded part is formed on a side of the straight fold line opposite to a side on which the first terminal support part is positioned and includes a wiring extending in the first direction from the first sheet adhesive terminal to the second sheet adhesive terminal, and the flexible wiring board includes the weakened part on a boundary between the first folded part and the first terminal support part.

6 . The flexible wiring board according to claim 5 , wherein the second support piece includes a second folded part that includes the base end part of the second support piece in the first direction and is extending in the first direction, and a second terminal support part in which the second sheet adhesive terminal is positioned, the second folded part is positioned on a side of the straight fold line opposite to a side on which the second terminal support part is positioned and includes a wiring extending in the first direction from the second sheet adhesive terminal to the first sheet adhesive terminal, and the flexible wiring board includes the weakened part on a boundary between the second folded part and the second terminal support part.

7 . The flexible wiring board according to claim 6 , further comprising:
an external connection terminal in which an end part of the wiring extending from the first sheet adhesive terminal and an end part of the wiring extending from the second sheet adhesive terminal are positioned, wherein the external connection terminal is a part of the flexible wiring board that connects to the first folded part and extends from the first folded part toward a side of the straight fold line opposite to a side on which the first folded part is positioned.

8 . The flexible wiring board according to claim 6 , further comprising:
an external connection terminal in which an end part of the wiring extending from the first sheet adhesive terminal and an end part of the wiring extending from the second sheet adhesive terminal are positioned.

9 . A flexible wiring board comprising:
an insulating layer having a support surface extending in a first direction; a first sheet adhesive terminal positioned on the support surface; a second sheet adhesive terminal positioned on the support surface; and a weakened part formed on a straight fold line extending in the first direction and configured to induce the flexible wiring board to fold along the straight fold line, wherein the first sheet adhesive terminal is spaced from the second sheet adhesive terminal in the first direction and is positioned on a side of the straight fold line opposite to a side on which the second sheet adhesive terminal is positioned, and the insulating layer includes a first support piece that supports the first sheet adhesive terminal and is extending in the first direction, and a second support piece that supports the second sheet adhesive terminal and is extending in the first direction, a part of the first support piece that connects to the second support piece is a tip end part of the first support piece in the first direction, a part of the second support piece that connects to the first support piece is a base end part of the second support piece in the first direction, and the flexible wiring board includes the weakened part on a boundary between the tip end part and the base end part.

10 . The flexible wiring board according to claim 9 , wherein the first support piece includes a first folded part that includes the tip end part of the first support piece in the first direction and is extending in the first direction, and a first terminal support part in which the first sheet adhesive terminal is positioned, the first folded part is formed on a side of the straight fold line opposite to a side on which the first terminal support part is positioned and includes a wiring extending in the first direction from the first sheet adhesive terminal to the second sheet adhesive terminal, and the flexible wiring board includes the weakened part on a boundary between the first folded part and the first terminal support part.

11 . The flexible wiring board according to claim 10 , wherein the second support piece includes a second folded part that includes the base end part of the second support piece in the first direction and is extending in the first direction, and a second terminal support part in which the second sheet adhesive terminal is positioned, the second folded part is positioned on a sid

Assignees

• Toppan Inc

Inventors

• Tsuji Masaki

Classifications

• H05K2201/10121

  Optical component, e.g. opto-electronic component · CPC title

• H05K2201/055

  Folded back on itself · CPC title

• H05K3/3405

  Edge mounted components, e.g. terminals · CPC title

• H05K3/321

  by conductive adhesives · CPC title

• H05K2201/10136

  Liquid Crystal display [LCD] · CPC title