IP Library › Granted Patent US 12,665,386
Granted Patent B2
US 12,665,386 · App. 17/411,821 · Granted Jun 23, 2026

Light-emitting device and measurement device

Inventors: Takashi Kondo (Ebina, JP); Michiaki Murata (Ebina, JP); Kenichi Ono (Ebina, JP); Junichiro Hayakawa (Ebina, JP); Takafumi Higuchi (Ebina, JP); Takashi Fujimoto (Ebina, JP); Manabu Akamatsu (Ebina, JP)
Assignee: FUJIFILM Business Innovation Corp.
H01S5/0425G01S17/08H01S5/423
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Quick Facts
Patent No.
US 12,665,386
App. No.
17/411,821
Granted
Jun 23, 2026
Kind
B2
Abstract

A light-emitting device includes: a substrate; a light-emitting unit including plural light-emitting elements; a transfer unit configured to output a signal that controls a light-emitting state of the light-emitting elements; and an electrode unit configured to input and output a signal that drives the transfer unit, the substrate has a rectangular shape having a long side and a short side, and the electrode unit is disposed along the short side of the substrate with the transfer unit interposed between a part of the electrode unit and other part of the electrode unit.

Claims (54)

1 . A light-emitting device comprising:

a substrate;

a light-emitting unit comprising a plurality of light-emitting elements;

a transfer unit configured to output a signal that controls a light-emitting state of the light-emitting elements; and

an electrode unit configured to input and output a signal that drives the transfer unit, wherein

the substrate has a rectangular shape having a long side and a short side,

the electrode unit is disposed along the short side of the substrate with the transfer unit interposed between a part of the electrode unit and other part of the electrode unit,

an area of the light-emitting unit is larger than an area of the transfer unit,

the light-emitting unit comprises a plurality of light-emitting element groups, each of which comprises a plurality of light-emitting elements and is capable of being driven independently from other of the light-emitting element groups, and the plurality of light-emitting element groups is arranged two dimensionally,

the light-emitting device further comprising a light-emitting electrode unit commonly connected to the plurality of light-emitting elements and configured to supply a current to the plurality of light-emitting elements, and

the light-emitting electrode unit is formed along the long side of the substrate.

2 . The light-emitting device according to claim 1 , wherein

the electrode unit comprises a plurality of transfer signal electrodes to which a transfer signal for controlling a state where the light-emitting elements are capable of changing to a light-emitting state is given, and a plurality of power supply electrodes configured to give a power supply potential and a reference potential to the transfer unit, and the plurality of transfer signal electrodes and the plurality of power supply electrodes are disposed in a same linear shape with respect to the transfer unit.

3 . The light-emitting device according to claim 1 , wherein

the electrode unit comprises a plurality of transfer signal electrodes to which a transfer signal for controlling a state where the light-emitting elements are capable of changing to a light-emitting state is given, and a plurality of power supply electrodes configured to give a power supply potential and a reference potential to the transfer unit, and the plurality of transfer signal electrodes and the plurality of power supply electrodes are disposed in a direction intersecting the transfer unit.

4 . The light-emitting device according to claim 1 , wherein

the electrode unit comprises a pair of transfer signal electrodes to which a transfer signal for controlling a state where the light-emitting elements are capable of changing to a light-emitting state is given, and the pair of transfer signal electrodes is disposed so as to face each other with the transfer unit interposed between the pair of transfer signal electrodes.

5 . The light-emitting device according to claim 1 , wherein

the transfer unit comprises a first-direction transfer unit configured to output the signal to the light-emitting elements arranged in a first direction and a second-direction transfer unit configured to output the signal to the light-emitting elements arranged in a second direction that intersects the first direction, and neither the first-direction transfer unit nor the second-direction transfer unit is disposed in a direction of the long side of the substrate.

6 . The light-emitting device according to claim 1 , wherein

the electrode unit and the light-emitting electrode unit are disposed side by side in a direction along the long side of the substrate.

7 . The light-emitting device according to claim 1 , wherein

the part of the electrode unit and the other part of the electrode unit is connected to and configured to drive the same transfer unit.

8 . A measurement device comprising:

the light-emitting device according to claim 1 ;

a light receiving unit configured to receive reflected light from an object irradiated with light from the light-emitting device; and

a processing unit configured to measure a distance from the light-emitting device to the object or a three-dimensional shape of the object based on a time from when the object is irradiated with the light from the light-emitting device until when the light is received by the light receiving unit.

9 . A light-emitting device comprising:

a substrate;

a light-emitting unit comprising a plurality of light-emitting elements;

a transfer unit configured to output a signal that controls a light-emitting state of the light-emitting elements; and

an electrode unit configured to input and output a signal that drives the transfer unit, wherein

the substrate has a rectangular shape having a long side and a short side,

the transfer unit and the electrode unit are respectively disposed along the short side of the substrate,

an area of the light-emitting unit is larger than an area of the transfer unit,

the light-emitting unit comprises a plurality of light-emitting element groups, each of which comprises a plurality of light-emitting elements and is capable of being driven independently from other of the light-emitting element groups, and the plurality of light-emitting element groups is arranged two dimensionally,

the light-emitting device further comprising a light-emitting electrode unit commonly connected to the plurality of light-emitting elements and configured to supply a current to the plurality of light-emitting elements, and

the light-emitting electrode unit is formed along the long side of the substrate.

10 . The light-emitting device according to claim 9 , wherein

the electrode unit comprises a transfer signal electrode to which a transfer signal for controlling a state where the light-emitting elements are capable of changing to a light-emitting state is given, and a power supply electrode configured to give a power supply potential and a reference potential to the transfer unit, and the transfer signal electrode and the power supply electrode are disposed side by side along the short side of the substrate.

11 . The light-emitting device according to claim 10 , wherein

a lighting signal electrode that supplies a current to the light-emitting elements is disposed along the long side of the substrate such that the transfer unit and a portion of the lighting signal electrode overlap in a direction of the short side of the substrate.

12 . The light-emitting device according to claim 10 , wherein

a lighting signal electrode that supplies the current to the light-emitting elements is disposed along the long side of the substrate such that the electrode unit and a portion of the lighting signal electrode overlap in a direction of the short side of the substrate.

13 . The light-emitting device according to claim 9 , wherein

the transfer unit is integrated into one part and disposed along the short side of the substrate.

14 . The light-emitting device according to claim 9 , further comprising:

a common signal line commonly provided for a light-emitting element group including a plurality of the light-emitting elements, wherein, in the—light-emitting element group, a transfer signal output from the transfer unit to the common signal line causes the light-emitting elements included in the light-emitting element group to emit light at a same time or increases a light-emitting intensity.

15 . The light-emitting device according to claim 9 , wherein

a number of the light-emitting element groups arranged in a direction along the long side of the substrate is larger than a number of the light-emitting element groups arranged in a direction along the short side of the substrate.

16 . A measurement device comprising:

the light-emitting device according to claim 9 ;

a light receiving unit configured to receive reflected light from an object irradiated with light from the light-emitting device; and

a processing unit configured to measure a distance from the light-emitting device to the object or a three-dimensional shape of the object based on a time from when the object is irradiated with the light from the light-emitting device until when the light is received by the light receiving unit.