Pattern structure for preventing visibility of moiré and display apparatus using the pattern structure

Patent metadata

Field	Value
Publication number	US-10678359-B2
Application number	US-201816134471-A
Country	US
Kind code	B2
Filing date	Sep 18, 2018
Priority date	Sep 19, 2017
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

Provided are a pattern structure for preventing a moiré pattern from becoming visible, and a display apparatus using the same. The pattern structure includes a first element pattern including a plurality of first elements arranged regularly at a first pitch; a second element pattern including a plurality of second elements arranged regularly at a second pitch, the second element pattern being provided on the first element pattern; and a filling layer configured to fill gaps among the plurality of second elements, between adjacent ones thereof. A difference between transmittances of the second element and the filling layer is about 5% or less and thus, a moiré pattern occurring due to the overlapping of the first element pattern and the second element pattern may be prevented from becoming visible.

First claim

What is claimed is:

1. A pattern structure comprising:
a first element pattern comprising a plurality of first elements arranged at a first pitch;
a second element pattern including a plurality of second elements arranged at a second pitch, wherein the second element pattern overlaps with the first element pattern; and
a filling layer filling gaps between adjacent ones of the plurality of second elements,
wherein a difference between a transmittance of the plurality of second elements and a transmittance of the filling layer is about 5% or less, and
wherein the plurality of second elements each comprise a first oxide layer, a metal layer and a second oxide layer which are sequentially stacked.

2. The pattern structure of claim 1 , wherein the first pitch and the second pitch are values such that, absent the filling layer, a moiré pattern is formed by the overlap of the first element pattern and the second element pattern.

3. The pattern structure of claim 1 , further comprising a transparent substrate disposed between the first element pattern and the second element pattern.

4. The pattern structure of claim 1 , wherein the filling layer covers the plurality of second elements.

5. A pattern structure comprising:
a first element pattern comprising a plurality of first elements arranged at a first pitch;
a second element pattern including a plurality of second elements arranged at a second pitch, wherein the second element pattern overlaps with the first element pattern; and
a filling layer filling gaps between adjacent ones of the plurality of second elements,
wherein a difference between a transmittance of the plurality of second elements and a transmittance of the filling layer is about 5% or less, and
wherein the transmittance of the plurality of second elements is about 90% or more.

6. A display apparatus comprising:
a display panel comprising a pixel pattern comprising a plurality of pixels arranged regularly at a first pitch; and
a first sensor provided on the display panel,
wherein the first sensor comprises:
an electrode pattern comprising a plurality of electrodes arranged regularly at a second pitch; and
a filling layer filling gaps between adjacent ones of the plurality of electrodes,
wherein a difference between a transmittance of the plurality of electrodes and a transmittance of the filling layer is about 5% or less, and
wherein the plurality of electrodes each comprise a first oxide layer, a metal layer, and a second oxide layer which are sequentially stacked.

7. The display apparatus of claim 6 , wherein the filling layer covers the plurality of electrodes.

8. The display apparatus of claim 6 , wherein the transmittance of the plurality of electrodes is about 90% or more and a sheet resistance of the plurality of electrodes is about 10 Ωsq−1 or less.

9. The display apparatus of claim 6 , wherein the filling layer comprises one of an inorganic oxide and an organic insulating material.

10. The display apparatus of claim 6 , wherein the first sensor comprises one of a fingerprint sensor and a fingerprint-touch composite sensor.

11. The display apparatus of claim 6 , further comprising a second sensor disposed between the display panel and the first sensor.

12. The display apparatus of claim 11 , wherein the first sensor comprises a fingerprint sensor, and
the second sensor comprises a touch sensor.

13. A display apparatus comprising:
a display panel comprising a pixel pattern comprising a plurality of pixels arranged regularly at a first pitch; and
a first sensor provided on the display panel,
wherein the first sensor comprises:
an electrode pattern comprising a plurality of electrodes arranged regularly at a second pitch; and
a filling layer filling gaps between adjacent ones of the plurality of electrodes,
wherein a difference between a transmittance of the plurality of electrodes and a transmittance of the filling layer is about 5% or less,
wherein the first pitch and the second pitch are values such that, absent the filling layer, a moiré pattern is formed by an overlap of the pixel pattern and the electrode pattern, the first pitch being about 100 μm or less, and the second pitch being about 1 mm or less.

14. The display apparatus of claim 6 , wherein the first oxide layer comprises at least one material selected from a group consisting of indium-tin oxide (ITO), indium-zinc oxide (IZO), Al-doped ZnO (AZO), Ga-doped ZnO (GZO), indium-tin-zinc oxide (ITZO), zinc-tin oxide (ZTO), indium-gallium oxide (IGO), SnO2, TiO2, Nb2O5, ZnO, ZrO2 and HfO2.

15. The display apparatus of claim 6 , wherein the metal layer comprises one of Ag and an Ag alloy.

16. The display apparatus of claim 6 , wherein the second oxide layer comprises one of a same material as a material of the first oxide layer and a material having a refractive index lower than a refractive index of the first oxide layer.

17. The display apparatus of claim 16 , wherein the second oxide layer comprises at least one material selected from a group consisting of indium-tin oxide (ITO), indium-zinc oxide (IZO), Al-doped ZnO (AZO), Ga-doped ZnO (GZO), indium-tin-zinc oxide (ITZO), zinc-tin oxide (ZTO), indium-gallium oxide (IGO), SnO2, and ZnO.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Cho Eunhyoung
• Koo Bonwon
• Kim Hyunjoon
• Kim Haesung
• Won Jungyun

Classifications

• H01L27/323

  Electricity · mapped topic

• G06K9/0002

  Physics · mapped topic

• G06F3/044

  by capacitive means · CPC title

• H01L27/3234

  Electricity · mapped topic

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title