Reflective light control film and display device for a car comprising the same

Patent metadata

Field	Value
Publication number	US-10191329-B2
Application number	US-201715636828-A
Country	US
Kind code	B2
Filing date	Jun 29, 2017
Priority date	Jul 1, 2016
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A reflective light control film includes a transparent film having a plurality of protruded line patterns formed on one surface of the base film, each of the protruded line patterns including a first side having an inclination angle with respect to the one surface of the base film and a second side, and a light reflection layer provided on the first side. The reflective light control film has excellent visibility for the screen even if it is not provided with a separate shade, and the screen is prevented from being reflected on the windshield.

First claim

What is claimed is:

1. A reflective light control film comprising:
a transparent film having one surface and the other surface opposite to the one surface, a plurality of protruded line patterns formed on the one surface, each of the plurality of protruded line patterns including a first side having an inclination angle with respect to the one surface and a second side;
a light reflection layer provided on the first side, the light reflection layer having a first surface being in contact with the first side and a second surface opposite to the first surface; and
a light shielding layer disposed directly on the second surface of the light reflection layer,
wherein the second side is transparent, and
light incident on the other surface is reflected by the first surface of the light reflection layer, and then shielded by an adjacent light shielding layer.

2. The reflective light control film of claim 1 , wherein
the one surface of the transparent film has gaps between the plurality of protruded line patterns; and
light incident on the other surface is emitted to at least one of the second side and the gaps.

3. The reflective light control film of claim 1 , wherein the inclination angle is 15° to 48°.

4. The reflective light control film of claim 1 , wherein the second side is formed in a direction perpendicular to the one surface.

5. The reflective light control film of claim 1 , wherein the first side and the second side meet each other at an end of the line pattern to form an edge.

6. The reflective light control film of claim 1 , wherein the light reflection layer is a metal layer.

7. The reflective light control film of claim 1 , wherein the line pattern has a width of 10 to 200 μm.

8. The reflective light control film of claim 1 , wherein the light reflection layer has a thickness of 100 to 800 nm.

9. The reflective light control film of claim 1 , wherein a ratio of a distance between the line patterns to the width of the line pattern is 1:1 to 1:1.4.

10. An in-vehicle display device comprising a display part and the reflective light control film of claim 1 , wherein the other surface is adhered to an outer surface of the display part.

11. A vehicle having the in-vehicle display device of claim 10 , wherein the first side faces a windshield of the vehicle.

Assignees

• Dongwoo Fine Chem Co Ltd

Inventors

• Choi Bong Jin
• Ahn Gi Hwan
• Kum Joong Han
• On Jeung Hoon
• Choi Han Young

Classifications

• G02B5/003

  Light absorbing elements · CPC title

• G02B5/09 Primary

  Multifaceted or polygonal mirrors {, e.g. polygonal scanning mirrors; Fresnel mirrors} · CPC title

• B60J3/007

  Sunglare reduction by coatings, interposed foils in laminar windows, or permanent screens (layered glass products B32B17/00; process of coating windows C03C17/00) · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• G02F1/133504

  Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606) · CPC title