Backlight module and display module

Patent metadata

Field	Value
Publication number	US-10976603-B2
Application number	US-201916552064-A
Country	US
Kind code	B2
Filing date	Aug 27, 2019
Priority date	Sep 20, 2018
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

The present disclosure provides a backlight module and a display module. The backlight module includes a plurality of light-emitting units arranged in an array. Each light-emitting unit includes a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure. The first light-emitting structure, the second light-emitting structure, and the third light-emitting structure are respectively disposed on at least two substrates that are arranged opposite to each other. Light emitted by the first light-emitting structure, light emitted by the second light-emitting structure, and light emitted by the third light-emitting structure are unoverlapped with each other.

First claim

What is claimed is:

1. A backlight module, comprising:
a plurality of light-emitting units arranged in an array, wherein:
each light-emitting unit includes a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure, wherein:
the first light-emitting structure, the second light-emitting structure, and the third light-emitting structure are respectively disposed on at least two substrates that are arranged opposite to each other, the at least two substrates includes a first substrate and a second substrate, wherein the first substate faces a light-emitting surface of light-emitting structures disposed on the second substate; and
light emitted by the first light-emitting structure, light emitted by the second light-emitting structure, and light emitted by the third light-emitting structure are not mixed with each other; and

a first light-shielding layer disposed between the first substrate and the second substrate to block light emitted from the light-emitting structures disposed on the second substrate toward the light-emitting structures disposed on the first substrate.

2. The backlight module according to claim 1 , wherein:
the at least two substrates include a total of two substrates, wherein:
the first light-emitting structure and the second light-emitting structure are disposed on a same substrate of the two substrates, and the third light-emitting structure is disposed on another substrate of the two substrates, or
the first light-emitting structure and the third light-emitting structure are disposed on a same substrate of the two substrates, and the second light-emitting structure is disposed on another substrate of the two substrates, or
the second light-emitting structure and the third light-emitting structure are disposed on a same substrate of the two substrates, and the first light-emitting structure is disposed on another substrate of the two substrates.

3. The backlight module according to claim 2 , wherein:
the first light-emitting structure, the second light-emitting structure, and the third light-emitting structure are formed from an opaque light-emitting material.

4. A backlight module, comprising:
a plurality of light-emitting units arranged in an array, wherein:
each light-emitting unit includes a first light-emitting structure, a second light-emitting structure, and a third light-emitting structure, wherein:
the first light-emitting structure, the second light-emitting structure, and the third light-emitting structure are respectively disposed on at least two substrates that are arranged opposite to each other; and
light emitted by the first light-emitting structure, light emitted by the second light-emitting structure, and light emitted by the third light-emitting structure are not mixed with each other;

the at least two substrates include a total of two substrates; and
the two substrates include a first substrate and a second substrate, wherein:
the first light-emitting structure and the second light-emitting structure are disposed on a same substrate of the two substrates, and the third light-emitting structure is disposed on another substrate of the two substrates, or
the first light-emitting structure and the third light-emitting structure are disposed on a same substrate of the two substrates, and the second light-emitting structure is disposed on another substrate of the two substrates, or
the second light-emitting structure and the third light-emitting structure are disposed on a same substrate of the two substrates, and the first light-emitting structure is disposed on another substrate of the two substrates;

a first light-shielding layer disposed between the first substrate and the second substrate, wherein:
the first substrate faces a light-emitting surface of light-emitting structures disposed on the second substrate;
the first light-shielding layer is located on a side of the first substrate facing to the second substrate;
an orthogonal projection of the first light-shielding layer on the first substrate is located on a side opposite the light-emitting structures disposed on the first substate, and the first light shielding layer covers an area corresponding to the light-emitting structures on the first substrate; and

the first light-shielding layer is used to block light emitted from the light-emitting structures disposed on the second substrate toward the light-emitting structures disposed on the first substrate.

5. The backlight module according to claim 4 , wherein:
on the first substrate, an orthogonal projection of the light-emitting structures disposed on the second substrate at least partially overlaps with the light-emitting structures disposed on the first substrate.

6. The backlight module according to claim 1 , wherein:
the at least two substrates include a total of three substrates; and
the three substrates include a first substrate, a second substrate, and a third substrate, wherein:
the second substrate is located between the first substrate and the second substrate,
the first light-emitting structure, the second light-emitting structure, and the third light-emitting structure are disposed on the first substrate, the second substrate, and the third substrate, respectively.

7. The backlight module according to claim 6 , wherein:
the first light-emitting structure, the second light-emitting structure, and the third light-emitting structure are formed from an opaque light-emitting material.

8. The backlight module according to claim 6 , further including:
a second light-shielding layer disposed between the first substrate and the second substrate; and
a third light-shielding layer disposed between the second substrate and the third substrate.

9. The backlight module according to claim 8 , wherein:
the second substrate faces a light-emitting surface of light-emitting structures disposed on the third substrate;
the first substrate faces a light-emitting surface of light-emitting structures disposed on the second substrate;
the second light-shielding layer is located on a side of the first substrate facing to the second substrate, an orthogonal projection of the second light-shielding layer on the first substrate covers light-emitting structures disposed on the first substrate, and the second light-shielding layer is used to block light emitted from the light-emitting structures disposed on the second substrate toward the light-emitting structures disposed on the first substrate; and
the third light-shielding layer is located on a side of the second substrate facing to the third substrate, an orthogonal projection of the third light-shielding layer on the second substrate covers the light-emitting structures disposed on the second substrate, and the third light-shielding layer is used to block light emitted from the light-emitting structures disposed on the third substrate toward the light-emitting structures disposed on the second substrate.

10. The backlight module according to claim 9 , wherein:
on the second substrate, an orthogonal projection of the light-emitting structures disposed on the first substrate at least partially overlaps with the light-emitting structures disposed on the second substrate; and
on the third substrate, an orthogonal projection of the light-emitting structures disposed on the second substrate at least partially overlaps with the light-emitting structures disposed on the third substrate.

11. The backlight module according to claim 1 , further including:
a fluorescent film layer covering the first light-emitting structure, the second light-emitting structure, and the third light-emitting structure.

Assignees

• Xiamen Tianma Micro Electronics Co Ltd

Inventors

• Liu Bingping

Classifications

• G02F1/133512

  Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence) · CPC title

• G02F1/133608 Primary

  including particular frames or supporting means · CPC title

• G02F1/133602 Primary

  Direct backlight · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G02F1/133613

  characterized by the sequence of light sources · CPC title