Display device having light emitting diode formed on the array substrate

Patent metadata

Field	Value
Publication number	US-11709388-B2
Application number	US-202217824958-A
Country	US
Kind code	B2
Filing date	May 26, 2022
Priority date	Dec 27, 2018
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

According to one embodiment, a display device includes a first substrate, a second substrate opposing the first substrate, a liquid crystal layer and a light source that emits light to the liquid crystal layer, and the first substrate includes a first portion opposing the second substrate and having a first thickness and a second portion not opposing the second substrate and having a second thickness which is less than the first thickness, and the light source is disposed on the second portion, and the light source includes a first surface opposing the second portion and a second surface opposing the first surface, and a wiring substrate is disposed on the second surface so that the wiring substrate does not protrude with respect to the second substrate in a thickness direction.

First claim

What is claimed is:

1. A display device comprising:
a first substrate;
a second substrate opposing the first substrate;
a liquid crystal layer disposed between the first substrate and the second substrate;
a light source that emits light to the liquid crystal layer, and
an IC chip, wherein
the first substrate comprises a first portion opposing the second substrate and having a first thickness and a second portion not opposing the second substrate and having a second thickness which is less than the first thickness,
the light source is disposed on the second portion,
the IC chip is disposed on the second portion,
the light source comprises a first surface opposing the second portion and a second surface opposing the first surface,
a wiring substrate is disposed on the second surface, and
the wiring substrate and the IC chip overlap in a plan view.

2. The display device of claim 1 , wherein
the wiring substrate does not protrude with respect to the second substrate in a thickness direction.

3. The display device of claim 1 , wherein
the second portion comprises a concave portion with a depth corresponding to a difference between the first thickness and the second thickness.

4. The display device of claim 1 , wherein
the second thickness is less than half of the first thickness.

5. The display device of claim 1 , wherein
the light source emits light to a side surface of the second substrate.

6. The display device of claim 5 , further comprising:
an air layer provided between the light source and the side surface of the second substrate.

7. The display device of claim 1 , wherein
the liquid crystal layer comprises a polymer-dispersed liquid crystal.

8. A display device comprising:
a first substrate;
a second substrate opposing the first substrate;
a liquid crystal layer disposed between the first substrate and the second substrate; and
a light source that emits light to the liquid crystal layer, wherein
the first substrate comprises a first portion opposing the second substrate and having a first thickness, a second portion not opposing the second substrate and having a second thickness which is less than the first thickness, and a first side surface between the first portion and the second portion,
the light source is disposed on the second portion, and
the light source emits light to the first side surface.

9. The display device of claim 8 , further comprising:
an air layer provided between the light source and the first side surface.

10. The display device of claim 8 , wherein
the light source emits light to a side surface of the second substrate.

11. The display device of claim 10 , further comprising:
an air layer provided between the light source and the side surface of the second substrate.

12. The display device of claim 8 , wherein
the liquid crystal layer comprises a polymer-dispersed liquid crystal.

Assignees

• Japan Display Inc

Inventors

• Kamijo Yoichi
• Imazeki Yoshikatsu
• Osawa Shuichi
• Watanabe Yoshihiro
• Miyasaka Koichi

Classifications

• G02F1/1334 Primary

  based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals · CPC title

• G02F1/1345

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/133388

  with constructional differences between the display region and the peripheral region · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F2203/03

  scattering · CPC title