Light irradiation substrate

Patent metadata

Field	Value
Publication number	US-10463875-B2
Application number	US-201615553860-A
Country	US
Kind code	B2
Filing date	Jan 22, 2016
Priority date	Feb 26, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

A light irradiation substrate includes plural unit substrates that have a flexible substrate. A portion of the unit substrates have a pair of external connection portions. A first surface of the flexible substrate is provided with an LED chip and a wire for each of the unit substrates, and a second surface is provided with a back surface wire across the unit substrates.

First claim

The invention claimed is:

1. A light irradiation substrate comprising:
a plurality of unit substrates that have a flexible substrate and are mutually detachable, wherein
each of the unit substrates has a resin covered light-emitting diode configured to emit phototherapeutic light and at least one of first wires on a first surface of the flexible substrate,
one of the unit substrates has at least one pair of external connection portions that is configured to supply power from an outside to the light-emitting diode via the first wires,
second wires that are connected with the external connection portion and the first wires through a thickness of the flexible substrate,
the second wires are configured to supply power from the external connection portion, via the first wires, to the light-emitting element of the unit substrates,
the second wires are arranged on a second surface on an opposite side to the first surface on the flexible substrate and across the unit substrates,
the second wires are configured to electrically connect the unit substrates in parallel with the external connection portion, and
the plurality of unit substrates has a notch pattern which is arranged along a boundary between neighboring unit substrates and through the thickness of the flexible substrate, and is further configured to permit mutual detachment of the unit substrates along the boundary via cutting.

2. A light irradiation substrate comprising:
a plurality of unit substrates that have a flexible substrate and are mutually detachable, wherein
each of the unit substrates has a resin covered light-emitting diode configured to emit phototherapeutic light and at least one of first wires on a first surface of the flexible substrate,
one of the unit substrates has at least one pair of external connection portions that is configured to supply power from an outside to the light-emitting diode via the first wires,
second wires that are connected with the external connection portion and the first wires,
the second wires are configured to supply power from the external connection portion, via the first wires through a thickness of the flexible substrate, to the light-emitting element of the unit substrates,
the second wires are arranged on a second surface on an opposite side to the first surface on the flexible substrate and across the unit substrates,
the first wires are independently arranged to each of the unit substrates,
the second wires have plural power supply lines that are configured to electrically connect the unit substrates in parallel with each other,
at least one of terminal portions of the second wires are connected with the external connection portion,
the plural power supply lines extend from the terminal portions to the unit substrates that are provided with the light-emitting elements to which power is supplied by the power supply lines and are electrically connected with the first wires of the unit substrates,
differences in resistance values among the power supply lines are within 20%, and
the plurality of unit substrates has a notch pattern which is arranged along a boundary between neighboring unit substrates and through the thickness of the flexible substrate, and is further configured to permit mutual detachment of the unit substrates along the boundary via cutting.

3. The light irradiation substrate according to claim 1 or 2 , wherein
the first wires of all the unit substrates are connected together in one line,
the second wires are arranged across all the unit substrates, and
the light-emitting elements of all the unit substrates are connected in series.

4. The light irradiation substrate according to claim 1 or 2 , wherein
the light-emitting elements of each of the unit substrates are arranged as a two-dimensional array along a first direction and a second direction that is orthogonal to the first direction, and
a distance between centers of the light-emitting elements that neighbor each other while facing a boundary between the neighboring unit substrates in the first direction is in a range that is 0.8 to 2 times as large as a distance between the centers of the light-emitting elements that neighbor each other in the first direction in each of the unit substrates.

5. The light irradiation substrate according to claim 1 or 2 , wherein
the light-emitting elements of each of the unit substrates are arranged as a two-dimensional array along a first direction and a second direction that is orthogonal to the first direction,
the unit substrates are aligned only in the first direction, and
a double value of a distance between an edge portion of the unit substrates in the second direction and the center of a light-emitting element that faces the edge portion is in a range of ±20% of a distance between the centers of the light-emitting elements that neighbor each other in the second direction in each of the unit substrates.

Assignees

• Sharp Kk

Inventors

• Iguchi Katsuji
• Kawanishi Hidenori
• Mori Jun
• Nakanishi Tohru

Classifications

• A61N2005/0652

  Arrays of diodes · CPC title

• A61N2005/0643

  Applicators, probes irradiating specific body areas in close proximity · CPC title

• A61N2005/0632

  Constructional aspects of the apparatus · CPC title

• A61N5/06

  using light · CPC title

• A61N5/0616 Primary

  Skin treatment other than tanning · CPC title