Magnetic fluid display

Patent metadata

Field	Value
Publication number	US-11514826-B2
Application number	US-202117489823-A
Country	US
Kind code	B2
Filing date	Sep 30, 2021
Priority date	Aug 23, 2017
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

The purpose of the present invention is to provide a magnetic fluid display in which a magnetic fluid moves in response to a magnetic field and which may display a unique visual image according to the meeting and parting of the magnetic fluid. A magnetic fluid display according to the present invention comprises: a display unit including a transparent liquid into which a magnetic fluid is injected; and a magnetic field generating unit for applying a magnetic field to the magnetic fluid at a rear surface of the display unit. When the magnetic field is applied, the magnetic fluid moves in the transparent liquid in a directional manner, so that an image may be displayed on the display unit.

First claim

The invention claimed is:

1. A display comprising:
a display unit comprising a fluid that contains magnetic particles; and
a magnetic field generating unit for applying a magnetic field to the display unit,
wherein the magnetic field generating unit comprises a plurality of cells, and each cell sequentially generates a magnetic field having an intensity capable of moving the magnetic particles of the display unit.

2. The display of claim 1 , further comprising:
a speaker part that outputs a sound.

3. The display of claim 2 , wherein at least one of an intensity, a frequency, and a pattern of the magnetic field applied by the magnetic field generating unit to the display unit varies according to at least one of a volume and a beat of the sound outputted from the speaker part.

4. The display of claim 1 , wherein each of the cells generates a magnetic field having the same or different intensity and frequency.

5. The display of claim 1 , wherein each of the cells has the same or different linear distance to the display unit.

6. The display of claim 1 , wherein the magnetic particles move in a directional manner when the magnetic field is applied, and descend by gravity when the magnetic field is not applied.

7. A display comprising:
a display unit comprising a fluid that contains magnetic particles;
a magnetic field generating unit for applying a magnetic field to the display unit; and
a speaker part that outputs a sound,

wherein the magnetic field generating unit comprises an area that applies a magnetic field having an intensity capable of moving the magnetic particles of the display unit, and
wherein the area changes with time.

8. The display of claim 7 , wherein at least one of an intensity, a frequency, and a pattern of the magnetic field applied by the magnetic field generating unit to the display unit varies according to at least one of a volume and a beat of the sound outputted from the speaker part.

9. The display of claim 7 , wherein the magnetic particles move in a directional manner when the magnetic field is applied, and descend by gravity when the magnetic field is not applied.

Assignees

• Ck Mat Lab Co Ltd

Inventors

• Kim Hyeong Jun
• Lee Jong Hun
• Choi Min Kyu

Classifications

• G09F9/37 Primary

  being movable elements (G09F9/302 takes precedence) · CPC title

• G09F27/00

  Combined visual and audible advertising or displaying, e.g. for public address · CPC title

• G09F9/375 Primary

  the position of the elements being controlled by the application of a magnetic field · CPC title

• G09F13/24

  using tubes or the like filled with liquid, e.g. bubbling liquid · CPC title

• G09F19/12

  using special optical effects · CPC title