Stereoscopic display device and dashboard using the same

Patent metadata

Field	Value
Publication number	US-10324304-B2
Application number	US-201715591503-A
Country	US
Kind code	B2
Filing date	May 10, 2017
Priority date	Feb 3, 2014
Publication date	Jun 18, 2019
Grant date	Jun 18, 2019

Abstract

Provided is a stereoscopic display device, including: a base member transmitting an incident beam; and a three-dimensional effect forming part on a first surface of the base member, wherein the three-dimensional effect forming part has a pattern, the pattern having multiple pattern units arranged in a concentric circular, elliptical or polygonal radial form, each of the pattern units having an inclined surface having an inclination angle with respect to the first surface, and wherein when an incident beam is incident to a central portion of the pattern, the pattern guides the incident beam in a first surface direction toward which the first surface looks or a second surface direction toward which a second surface opposite to the first surface looks, thereby displaying a line-shaped beam having a three-dimensional effect in a first path resulting a pattern arrangement direction.

First claim

What is claimed is:

1. A display device, comprising:
a background substrate;
a base member disposed on the background substrate, the base member having a first end and a second end, and the base member extending in a first direction from the first end to the second end;
a plurality of patterns disposed on the base member and arranged in the first direction;
at least one light source emitting a light to the plurality of patterns; and
a driving part connected to the base member at the first end to rotate the base member on the background substrate such that the second end of the base member moves more than the first end of the base member.

2. The display device of claim 1 , wherein at least one light source is disposed on the first end of the base member.

3. The display device of claim 1 , wherein each of the patterns has an inclined surface having an inclination angle with respect to a first surface of the base member.

4. The display device of claim 3 , wherein when an incident beam is incident on the pattern, the pattern guides the incident beam in a first surface direction toward which the first surface is facing or a second surface direction toward which a second surface opposite to the first surface is facing, thereby displaying a line-shaped beam having a three-dimensional effect in the first direction.

5. The display device of claim 1 , wherein the base member has a rod or needle shape.

6. The display device of claim 2 , wherein the driving part rotates the base member in a semicircular or a semielliptical shape.

7. The display device of claim 1 , wherein the driving part is coupled to a vehicle controller so that the base member is rotated at a predetermined rotating angle based on a speed of a vehicle.

8. The display device of claim 1 , wherein the background substrate comprises a dashboard shape.

9. The display device of claim 1 , wherein background substrate includes at least one of a number, a word, or an image.

10. The display device of claim 1 , wherein at least one light source includes a light emitting diode.

11. The display device of claim 3 , wherein the inclined surface is a mirror-like finishing surface and has an arithmetic mean roughness (Ra) of 0.02 or less and a maximum height roughness (Ry) of 0.30 or less.

12. The display device of claim 11 , wherein a width or a pitch between two adjacent pattern units of the pattern ranges from 10 to 500 μm.

13. The display device of claim 1 , wherein the base member is a resin layer, and the plurality of patterns are bonded to a first surface of the base member.

14. The display device of claim 1 , further comprising a reflective layer disposed on the plurality of patterns.

15. A display device, comprising:
a background substrate;
a base member disposed on the background substrate and extending in a first direction;
a plurality of patterns disposed on the base member and arranged in the first direction;
at least one light source emitting a light to the plurality of patterns; and
a driving part rotating the base member on the background substrate,
wherein each of the pattern units has an inclined surface having an inclination angle with respect to a first surface of the base member.

16. The display device of claim 15 , wherein the base member includes a first end connecting to the driving part, wherein at least one light source is disposed on the first end of the base member.

17. The display device of claim 15 , wherein when an incident beam is incident on the pattern, the pattern guides the incident beam in a first surface direction toward which the first surface is facing or a second surface direction toward which a second surface opposite to the first surface is facing, thereby displaying a line-shaped beam having a three-dimensional effect in the first direction.

18. The display device of claim 15 , wherein the base member has a rod or needle shape.

19. The display device of claim 15 , wherein the inclined surface is a mirror-like finishing surface and has an arithmetic mean roughness (Ra) of 0.02 or less and a maximum height roughness (Ry) of 0.30 or less.

20. The display device of claim 19 , wherein a width or a pitch between two adjacent pattern units of the pattern ranges from 10 to 500 μm.

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Dong Hyun
• Jeong Youn Mo
• Han Kyu Sung

Classifications

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• G02B30/35

  using reflective optical elements in the optical path between the images and the observer · CPC title

• G01D13/265 Primary

  Pointers which conduct light · CPC title

• G02B6/0038

  Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide · CPC title

• G02B6/0066

  characterised by the light source being coupled to the light guide · CPC title