Stereoscopic display device and dashboard using the same

Patent metadata

Field	Value
Publication number	US-9678351-B2
Application number	US-201514611533-A
Country	US
Kind code	B2
Filing date	Feb 2, 2015
Priority date	Feb 3, 2014
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

Provided is a stereoscopic display device, including: a base substrate transmitting an incident beam; and a three-dimensional effect forming part on a first surface of the base substrate, 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 stereoscopic display device, comprising:
a base substrate transmitting an incident beam of a light source;
a three-dimensional effect forming part on a first surface of the base substrate; and
a driving part to rotate the light source,
wherein the three-dimensional effect forming part has a pattern, the pattern having multiple pattern units arranged in a first direction, each of the pattern units having an inclined surface having an inclination angle with respect to the first surface,
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,
wherein the light source is disposed in the central portion of the pattern, and the driving part rotates the light source at the central portion so as to rotate the line-shaped beam in an extending direction of the multiple pattern units.

2. The stereoscopic display device of claim 1 , 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.

3. The stereoscopic display device of claim 2 , wherein a width or a pitch between two adjacent pattern units of the pattern ranges from 10 to 500 μm, a first pitch of a first pattern of a first pattern area adjacent to a central portion of the pattern in a radial direction is different from a second pitch of a second pattern of a second pattern area adjacent to an edge of the pattern.

4. The stereoscopic display device of claim 1 , wherein the base substrate is a resin layer, and the three-dimensional effect forming part is provided as a pattern layer bonded to the first surface of the base substrate.

5. The stereoscopic display device of claim 4 , wherein the pattern is provided on a first surface of the pattern layer, and a second surface opposite to the first surface of the pattern layer is bonded to the first surface of the base substrate.

6. The stereoscopic display device of claim 5 , further comprising a reflective layer on the first surface of the pattern layer.

7. The stereoscopic display device of claim 6 , comprising a separation area, an adhesive pattern, a reflective pattern or a combination thereof between the pattern and the reflective layer.

8. The stereoscopic display device of claim 1 , further comprising a separation layer between the pattern and the base substrate,
wherein the base substrate is a resin layer, the three-dimensional effect forming part is provided as a pattern layer bonded to the first surface of the base substrate, the pattern is provided on the first surface of the pattern layer, the separation layer is mounted to the first surface of the pattern layer, and the first surface of the pattern layer is buried by the resin layer.

9. The stereoscopic display device of claim 1 , wherein the light source emitting the incident beam comprises a plurality of sub-light sources that irradiates the incident beam from the central portion of the pattern in different radial directions.

10. The stereoscopic display device of claim 1 , wherein the base substrate and the three-dimensional effect forming part are provided with a single substrate, and the three-dimensional effect forming part is arranged in the inside or on a surface of the single substrate.

11. The stereoscopic display device of claim 1 , wherein the light source is disposed at one end of the pattern on the base substrate, wherein the base substrate has a rod or needle-like shape and supports the three-dimensional effect forming part and the light source.

12. The stereoscopic display device of claim 11 , wherein the driving part rotates the base substrate in a circular or elliptical shape based on the one end of the based substrate on which the light source is disposed.

13. The stereoscopic display device of claim 11 , wherein the base substrate comprises a first base substrate, a second base substrate and a third base substrate each having a rod or needle-like shape,
the three-dimensional effect forming part comprises:
a first three-dimensional effect forming part having a first pattern arranged on a first surface of the first base substrate;
a second three-dimensional effect forming part having a second pattern arranged on a first surface of the second base substrate; and
a third three-dimensional effect forming part having a third pattern arranged on a first surface of the third base substrate, and

the light source comprises:
a first light source disposed at one end of the first pattern and irradiating a first incident beam from the one end to another end;
a second light source disposed at one end of the second pattern and irradiating a second incident beam from the one end to another end;
a third light source disposed at one end of the third pattern and irradiating a third incident beam from the one end to another end,

wherein the first base substrate, the second base substrate and the third base substrate are disposed such that the first light source, the second light source and the third light source are installed in a central portion of a printing part having a circular or elliptical shape, and irradiate the incident beam from the central portion to different directions.

Assignees

• Lg Innotek Co Ltd

Inventors

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

Classifications

• G02B30/35

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

• G02B30/27 Primary

  involving lenticular arrays · CPC title

• B60Q3/12

  lighting onto the surface to be illuminated · 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