Display device and control method thereof

Patent metadata

Field	Value
Publication number	US-12225182-B2
Application number	US-202318387706-A
Country	US
Kind code	B2
Filing date	Nov 7, 2023
Priority date	Jul 5, 2021
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A display device includes a main body; a first rotatable shaft included in a first portion of the main body; a second rotatable shaft included in a second portion of the main body, the second portion being opposite to the first portion; a motor disposed inside the main body, and connected to at least one of the first rotatable shaft and the second rotatable shaft; a transparent wire including a first end connected to the first rotatable shaft and a second end connected to the second rotatable shaft; a plurality of light emitting diodes (LEDs) included inside the transparent wire in a longitudinal direction of the transparent wire; a driving circuit configured to drive the plurality of LEDs; and a processor configured to control the motor to rotate the transparent wire, and to provide an image frame to the driving circuit to display an image by rotation of the transparent wire.

First claim

What is claimed is:

1. A display device, comprising:
a main body;
a first rotatable shaft included in a first portion of the main body;
a second rotatable shaft included in a second portion of the main body, the second portion being opposite to the first portion;
a motor disposed inside the main body, and connected to at least one of the first rotatable shaft and the second rotatable shaft;
a transparent wire including a first end connected to the first rotatable shaft and a second end connected to the second rotatable shaft;
a plurality of light emitting diodes (LEDs) included inside the transparent wire in a longitudinal direction of the transparent wire;
a driving circuit configured to drive the plurality of LEDs; and
a processor configured to control the motor to rotate the transparent wire, and to provide an image frame to the driving circuit to display an image by rotation of the transparent wire.

2. The display device of claim 1 , further comprising:
a substrate included in the transparent wire in the longitudinal direction of the transparent wire,
wherein the plurality of LEDs are mounted on at least one of an upper surface of the substrate and a lower surface of the substrate.

3. The display device of claim 2 , further comprising:
a plurality of lenses mounted on the substrate to cover each of a plurality of pixels formed by the plurality of LEDs,
wherein the plurality of lenses are configured to diffuse light emitted from the plurality of LEDs.

4. The display device of claim 1 , further comprising:
a shaft actuator disposed in the main body,
wherein the shaft actuator is configured to move at least one of the first rotatable shaft and the second rotatable shaft in a direction parallel to a rotation axis.

5. The display device of claim 4 , wherein the processor is further configured to:
set a display area in which the image is displayed based on a size of the image frame;
adjust a movement distance of the at least one of the first rotatable shaft and the second rotatable shaft based on the display area to produce an adjusted movement distance; and
control the shaft actuator based on the adjusted movement distance.

6. The display device of claim 5 , wherein the processor is configured to adjust a rotational speed of the motor based on the adjusted movement distance of the at least one of the first rotatable shaft and the second rotatable shaft.

7. The display device of claim 5 , wherein the processor is configured to set the display area corresponding to a ratio of a width of the image frame and a height of the image frame.

8. The display device of claim 5 , wherein the processor is further configured to, based on a size of the image frame being greater than a maximum size of a configurable display area, scale the image frame.

9. The display device of claim 1 , wherein the processor is further configured to:
obtain the image frame by decoding image data,
divide the image frame into a plurality of image frame parts, and
sequentially provide the plurality of image frame parts to the driving circuit at each predetermined rotation angle of the transparent wire.

10. The display device of claim 1 , wherein the processor is further configured to adjust a rotational speed of the motor based on adjustment of a frame rate.

11. The display device of claim 1 , further comprising:
a wireless communication module configured to establish a wireless communication channel with the driving circuit,
wherein the processor is further configured to transmit the image frame using the wireless communication module through the wireless communication channel.

12. A control method of a display device, the control method comprising:
providing an image frame to a driving circuit configured to drive a plurality of light emitting diodes (LEDs);
rotating at least one of a first rotatable shaft and a second rotatable shaft connected to a transparent wire including the plurality of LEDs to move the transparent wire in a circular motion; and
displaying an image by driving the plurality of LEDs simultaneously with the circular motion of the transparent wire.

13. The control method of claim 12 , wherein the providing of the image frame comprises:
dividing the image frame into a plurality of image frame parts; and
sequentially providing the plurality of image frame parts to the driving circuit at a plurality of predetermined rotation angles of the transparent wire.

14. The control method of claim 12 , wherein the providing of the image frame comprises setting a display area for displaying the image based on a size of the image frame.

15. The control method of claim 14 , wherein the rotating of the at least one of the first rotatable shaft and the second rotatable shaft comprises moving the at least one of the first rotatable shaft and the second rotatable shaft in a direction parallel to a rotation axis based on the display area.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Im Sangkyun
• Park Jaehoo
• Lee Joowhan

Classifications

• G09G3/005

  forming an image using a quickly moving array of imaging elements, causing the human eye to perceive an image which has a larger resolution than the array, e.g. an image on a cylinder formed by a rotating line of LEDs parallel to the axis of rotation · CPC title

• G09G2370/16

  Use of wireless transmission of display information · CPC title

• G09G2340/0442

  Handling or displaying different aspect ratios, or changing the aspect ratio · CPC title

• G09G3/32

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• G09G3/035

  for flexible display surfaces · CPC title