Light controlling device, transparent display device including the same and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10139692-B2
Application number	US-201615373245-A
Country	US
Kind code	B2
Filing date	Dec 8, 2016
Priority date	Dec 15, 2015
Publication date	Nov 27, 2018
Grant date	Nov 27, 2018

Abstract

A light controlling device that may reduce the time required for mode switching from a transmissive mode to a light-shielding mode or from a light-shielding mode to a transmissive mode, a transparent display device including the same, and a method for manufacturing the same are discussed. The light controlling device according to an embodiment includes a first base film and a second base film; first auxiliary electrodes arranged on one surface of the first base film facing the second base film, and patterned at a predetermined interval; second auxiliary electrodes arranged on one surface of the second base film facing the first base film, and patterned at a predetermined interval; a first transparent electrode arranged on the first auxiliary electrodes; a second transparent electrode arranged on the second auxiliary electrodes; and an electrochromic layer arranged between the first transparent electrode and the second transparent electrode.

First claim

What is claimed is:

1. A light controlling device comprising:
a first base film and a second base film;
first auxiliary electrodes arranged on one surface of the first base film facing the second base film, and patterned at a predetermined interval;
second auxiliary electrodes arranged on one surface of the second base film facing the first base film, and patterned at a predetermined interval;
a first transparent electrode arranged on the first auxiliary electrodes and including a first lower surface and a first upper surface;
a second transparent electrode arranged on the second auxiliary electrodes and including a second lower surface and a second upper surface; and
an electrochromic layer arranged between the first transparent electrode and the second transparent electrode,
wherein an entirety of the first upper surface of the first transparent electrode is planarized and the first auxiliary electrodes extend into the first lower surface of the first transparent electrode,
wherein an entirety of the second lower surface of the second transparent electrode is planarized and the second auxiliary electrodes extend into the second upper surface of the second transparent electrode,
wherein the first upper surface is closer to the second lower surface than the second upper surface, and the second lower surface is closer to the first upper surface than the first lower surface, and
wherein the first auxiliary electrodes are in contact with the first transparent electrode, and the second auxiliary electrodes are in contact with the second transparent electrode.

2. The light controlling device of claim 1 , wherein each of the first auxiliary electrodes has a thickness thicker than that of the first transparent electrode, and each of the second auxiliary electrodes has a thickness thicker than that of the second transparent electrode.

3. The light controlling device of claim 2 , further comprising:
first insulating films between the first auxiliary electrodes; and
second insulating films between the second auxiliary electrodes.

4. The light controlling device of claim 3 , wherein each of the first insulating films has a thickness thinner than that of each of the first auxiliary electrodes, and each of the second insulating films has a thickness thinner than that of each of the second auxiliary electrodes.

5. The light controlling device of claim 1 , wherein the first base film includes first insertion holes which are engraved and formed on the one surface, the second base film includes second insertion holes which are engraved and formed on the one surface, each of the first auxiliary electrodes is inserted into each of the first insertion holes, and each of the second auxiliary electrodes is inserted into each of the second insertion holes.

6. The light controlling device of claim 5 , wherein the first transparent electrode is in contact with the one surface of the first base film and the first auxiliary electrodes, and the second transparent electrode is in contact with the one surface of the second base film and the second auxiliary electrodes.

7. The light controlling device of claim 1 , wherein the first transparent electrode has a thickness thicker than that of each of the first auxiliary electrodes, and the second transparent electrode has a thickness thicker than that of each of the second auxiliary electrodes.

8. The light controlling device of claim 1 , wherein each of the first auxiliary electrodes includes first auxiliary lines arranged along a first direction and second auxiliary lines arranged along a second direction crossing the first direction, and each of the second auxiliary lines has a width narrower than that of each of the first auxiliary lines.

9. The light controlling device of claim 1 , wherein each of the first and second auxiliary electrodes has a thickness in a range of 1 μm to 2 μm.

10. The light controlling device of claim 1 , wherein the thickness of each of the first and second auxiliary electrodes is greater than a width of each of the first and second auxiliary electrodes.

11. The light controlling device of claim 10 , wherein the width of each of the first and second auxiliary electrodes in a range of 0.1 μm to 10 μm.

12. A transparent display device comprising:
a transparent display panel that includes transmissive areas and emission areas; and
a light controlling device arranged on at least one surface of the transparent display panel, the light controlling device including:
a first base film and a second base film,
first auxiliary electrodes arranged on one surface of the first base film facing the second base film, and patterned at a predetermined interval,
second auxiliary electrodes arranged on one surface of the second base film facing the first base film, and patterned at a predetermined interval,
a first transparent electrode arranged on the first auxiliary electrodes and including a first lower surface and a first upper surface,
a second transparent electrode arranged on the second auxiliary electrodes and including a second lower surface and a second upper surface, and
an electrochromic layer arranged between the first transparent electrode and the second transparent electrode,

wherein an entirety of the first upper surface of the first transparent electrode is planarized and the first auxiliary electrodes extend into the first lower surface of the first transparent electrode,
wherein an entirety of the second lower surface of the second transparent electrode is planarized and the second auxiliary electrodes extend into the second upper surface of the second transparent electrode,
wherein the first upper surface is closer to the second lower surface than the second upper surface, and the second lower surface is closer to the first upper surface than the first lower surface, and
wherein the first auxiliary electrodes are in contact with the first transparent electrode, and the second auxiliary electrodes are in contact with the second transparent electrode.

13. The transparent display device of claim 12 , wherein each of the first auxiliary electrodes includes first auxiliary lines arranged along a first direction and second auxiliary lines arranged along a second direction crossing the first direction, and each of the second auxiliary lines has a width narrower than that of each of the first auxiliary lines.

14. The transparent display device of claim 12 , wherein each of the second auxiliary electrodes includes third auxiliary lines arranged along a first direction and fourth auxiliary lines arranged along a second direction crossing the first direction, and each of the fourth auxiliary lines has a width narrower than that of each of the third auxiliary lines.

15. The transparent display device of claim 12 , wherein a width of the first auxiliary electrodes and the second auxiliary electrodes is narrower than that of the emission areas.

16. The transparent display device of claim 13 , wherein a width of the first auxiliary lines is narrower than that of the emission areas.

17. A method for manufacturing a light controlling device, the method comprising:
patterning first auxiliary electrodes on a first base film at a predetermined interval and patterning second auxiliary electrodes on a second base film at a predetermined interval;
forming a first transparent electrode including a first lower surface and a first upper surface on the first auxiliary electrodes;
forming a second transparent electrode a second lower surface and a second upper surface on the second auxiliary electrodes;
forming a counter layer on th

Assignees

• Lg Display Co Ltd

Inventors

• Kim Jae-Hyun
• Ahn Jiyoung

Classifications

• G02F2203/01

  transmissive · CPC title

• G02F1/133345

  Insulating layers (G02F1/1335, G02F1/1337, G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/161

  Gaskets; Spacers; Sealing of cells; Filling or closing of cells · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F2201/44

  Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers · CPC title