Electronic device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-11320950-B2
Application number	US-202016919002-A
Country	US
Kind code	B2
Filing date	Jul 1, 2020
Priority date	May 26, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

An electronic device includes a display member including a plurality of display elements and a sensing member including a first sensing pattern disposed on the display member and a second sensing pattern disposed on the display member and capacitively coupled to the first sensing pattern. Each of the first and second sensing patterns includes a plurality of mesh lines to define a plurality of openings. Each of the first and second sensing patterns includes a unit mesh pattern including a central opening and a plurality of peripheral openings surrounding the central opening. A plurality of cutting lines, each of which opens at least two adjacent openings of the plurality of peripheral openings to each other, are defined in the unit mesh pattern. The cutting lines are arranged in a direction surrounding the central opening.

First claim

What is claimed is:

1. A method of manufacturing an electronic device, the method comprising:
providing an initial mesh substrate comprising first mesh lines extending in a first direction and parallel to each other in a second direction that intersects the first direction, and second mesh lines extending in the second direction and parallel to each other in the first direction, wherein the initial mesh substrate comprises a plurality of unit mesh patterns, and a plurality of cutting lines that cuts portions of the first and second mesh lines are defined in each of the unit mesh patterns;
cutting the first and second mesh lines along a boundary line connecting at least some of the cutting lines to form a plurality of sensing patterns; and
forming an insulating layer on the plurality of sensing patterns,
wherein the cutting lines are imaginary lines corresponding to cut portions of the first and second mesh lines, and each of the imaginary lines extends in the first direction or the second direction and connects centers of two openings adjacent to each other,
wherein the unit mesh pattern comprises:
a central opening enclosed by the first mesh lines and the second mesh lines without a cutting line; and
a plurality of peripheral openings surrounding the central opening and being defined by the first mesh lines and the second mesh lines,

wherein each of the cutting lines opens at least two adjacent openings of the peripheral openings to each other, and the cutting lines are arranged in a direction surrounding the central opening,
wherein the first mesh lines and the second mesh lines defining the central opening and the first mesh lines and the second mesh lines defining the peripheral openings are electrically connected to each other.

2. The method of claim 1 , wherein the cutting lines are arranged in a clockwise direction or counterclockwise direction around the central mesh pattern.

3. The method of claim 2 , wherein at least one of the cutting lines has a cross shape that comprises: a first pattern extending in the first direction; and a second pattern extending in the second direction and crossing over the first pattern, and
wherein a crossing point of the first and second patterns is a center of one of the peripheral openings.

4. The method of claim 2 , wherein at least one of the cutting lines has a closed-loop shape.

5. The method of claim 1 , wherein the cutting of the first and second mesh lines along the boundary line comprises cutting the mesh lines disposed between the at least some of the cutting lines, and
wherein each of the at least some of the cutting lines entirely overlaps with the boundary line.

6. The method of claim 1 , further comprising:
forming a bridge pattern connecting some of the plurality of sensing patterns on the insulating layer,
wherein the forming of the insulating layer comprises: forming an insulating layer covering the plurality of sensing patterns; and forming a contact hole in the insulating layer.

7. The method of claim 1 , wherein the electronic device comprises:
a display member comprising a plurality of display elements,
wherein the display member is divided into light emitting areas in which the display elements are respectively disposed and a non-light emitting area adjacent to the light emitting areas when viewed from a plan view.

8. The method of claim 7 , wherein the plurality of mesh lines defines a plurality of openings overlapping with the light emitting areas, respectively, and
wherein the plurality of openings comprises the central opening and the plurality of peripheral openings.

9. The method of claim 1 , further comprising forming a bridge pattern on the insulating layer to connect adjacent ones of the plurality of sensing patterns,
wherein the bridge pattern comprises a first portion that extends in the first direction and a second portion that extends in the second direction.

Assignees

• Samsung Display Co Ltd

Inventors

• Na Hyunjae
• Ku Jaseung
• Bang Gyeongnam
• Lee Sangwon

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/03547

  Touch pads, in which fingers can move on a surface · CPC title

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title