Metal mesh, thin film sensor and mask

Patent metadata

Field	Value
Publication number	US-12315992-B2
Application number	US-202117789772-A
Country	US
Kind code	B2
Filing date	Jun 25, 2021
Priority date	Jun 25, 2021
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

A metal mesh includes: first metal lines (11) and second metal lines (12) extending in crossed directions. The first metal lines (11) are arranged side by side in a first direction and extend in a second direction; the second metal lines (12) are arranged side by side in the first direction and extend in a third direction. Each first metal line (11) includes first sub-line segments sequentially connected together in the second direction, and each second metal line (12) includes second sub-line segments sequentially connected together in the third direction. Each first sub-line segment has a midpoint superposing with a midpoint of one of the second sub-line segments, the first and second sub-line segments having superposed midpoints form a crossed structure (10), and define two opposite first angles (θ1) and two opposite second angles (θ2). Each first angle (θ1) is not greater than each second angle (θ1).

First claim

What is claimed is:

1. A metal mesh, comprising: a plurality of first metal lines and a plurality of second metal lines extending in crossed directions; wherein the first metal lines are arranged side by side in a first direction and extend in a second direction; the second metal lines are arranged side by side in the first direction and extend in a third direction; and wherein each first metal line comprises a plurality of first sub-line segments sequentially connected together in the second direction, and each second metal line comprises a plurality of second sub-line segments sequentially connected together in the third direction; each first sub-line segment has a midpoint superposing with a midpoint of one of the second sub-line segments, the first sub-line segment and the second sub-line segment having superposed midpoints form a crossed structure, and define two opposite first angles and two opposite second angles; and each first angle is not greater than each second angle;
the crossed structure comprises a first virtual quadrangle and a second virtual quadrangle; the first sub-line segment is arranged in the first virtual quadrangle, and the first virtual quadrangle has a width being a maximum width of the first sub-line segment and a length being a length of the first sub-line segment; the second sub-line segment is arranged in the second virtual quadrangle, and the second virtual quadrangle has a width being a maximum width of the second sub-line segment and a length being a maximum length of the second sub-line segment; and
for any crossed structure, two sides defining each first angle are a first side and a second side, respectively, and a length of a connection line between a point S 1 on the first side and a point S 2 on the second side is a maximum distance L 1 between the first side and the second side; the connection line between the point S 1 and the point S 2 intersects with a side of the first virtual quadrangle at a point S 3 , intersects with a side of the second virtual quadrangle at a point S 4 , and a connection line between the point S 3 and the point S 4 has a length L 2 ; wherein L 1 is greater than L 2 .

2. The metal mesh according to claim 1 , wherein the first sub-line segment in the crossed structure comprises two first branches, and a first connection part arranged between and connecting the two first branches together; the second sub-line segment comprises two second branches, and a second connection part arranged between and connecting the two second branches together; the first connection part and the second connection part are arranged in a crossed manner; the first branches and the second branches each have a maximum width a 1 , the first side and the second side each have a length b 1 , and the first connection part and the second connection part each have a width c 1 ; where 3a 1 <b 1 <5a 1 ; and 0.6a 1 <c 1 <0.8a 1 .

3. The metal mesh according to claim 2 , wherein each first branch is connected to the first connection part to form a dihedral angle not less than 90°.

4. The metal mesh according to claim 2 , wherein the first sub-line segment forms an axisymmetric pattern with a straight line running through a midpoint of the maximum width of the first sub-line segment in the second direction as an axis of symmetry; and the second sub-line segment forms an axisymmetric pattern with a straight line running through a midpoint of the maximum width of the second sub-line segment in the third direction as an axis of symmetry.

5. The metal mesh according to claim 1 , wherein the first sub-line segment forms an axisymmetric pattern with a straight line running through a midpoint of the maximum width of the first sub-line segment in the second direction as an axis of symmetry; and the second sub-line segment forms an axisymmetric pattern with a straight line running through a midpoint of the maximum width of the second sub-line segment in the third direction as an axis of symmetry.

6. The metal mesh according to claim 1 , wherein each first angle comprises a flat chamfer or a rounded chamfer; and in the crossed structure, a distance L 3 is provided between an intersection point of extension lines of the first side and the second side and a vertex of the first angle, and a distance L 4 is provided between the intersection point of the extension lines of the first side and the second side and a center of an intersection region of the first sub-line segment and the second sub-line segment; where L 3 :L 4 =1:10 to 1:2.

7. The metal mesh according to claim 1 , wherein for any crossed structure, two sides defining each second angle are a third side and a fourth side, respectively, and a length of a connection line between a point S 5 on the third side and a point S 6 on the fourth side is a maximum distance L 5 between the third side and the fourth side; the connection line between the point S 5 and the point S 6 intersects with a side of the first virtual quadrangle at a point S 7 , intersects with a side of the second virtual quadrangle at a point S 8 , and a connection line between the point S 7 and the point S 8 has a length L 6 ; where L 5 is greater than L 6 .

8. The metal mesh according to claim 7 , wherein the connection line between the point S 1 and the point S 2 defines an area A with the first sub-line segment and the second sub-line segment, and the connection line between the point S 5 and the point S 6 defines an area B with the first sub-line segment and the second sub-line segment; and the first sub-line segment and the second sub-line segment have an intersection area C; where (A+B):C≤1:2.

9. The metal mesh according to claim 1 , wherein each second angle comprises a rounded chamfer or a flat chamfer.

10. The metal mesh according to claim 1 , wherein a connection line between vertices of the two second angles forms an angle with the first direction.

11. The metal mesh according to claim 1 , wherein the first sub-line segment in the crossed structure comprises two first branches, and the second sub-line segment comprises two second branches; the crossed structure further comprises a first annular connection part connecting between the two first branches and the two second branches; and in the crossed structure, the two first branches and the two second branches are connected to the first annular connection part at different nodes from each other.

12. The metal mesh according to claim 11 , wherein a first bridge part is connected between any adjacent two second angles with opposite openings.

13. A thin film sensor, comprising the metal mesh according to claim 1 .

14. A mask, comprising: a light-shielding part and a light-transmitting part; wherein the light-shielding part comprises a plurality of first light-shielding strips and a plurality of second light-shielding strips arranged in a crossed manner; the plurality of first light-shielding strips extend in a second direction and arranged side by side in a first direction; and the plurality of second light-shielding strips extend in a third direction and arranged side by side in the first direction;
a maximum width of each first light-shielding strip is a first width, and a maximum width of each second light-shielding strip is a second width;
each first light-shielding strip comprises a plurality of first sub-shielding strips arranged in the second direction, each of which extends in the second direction and has a width equal to the first width; each second light-shielding strip comprises a plurality of second sub-shielding strips arranged in the third direction, each of which extends in the third direction and has a width equal to the second width

Assignees

• Boe Technology Group Co Ltd

Inventors

• Jia Mengwen
• Yu Hai
• Zhang Yafei
• Wang Yali
• Zhang Dongdong
• Qu Feng

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0448 Primary

  Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality · CPC title

• H01Q1/364

  using a particular conducting material, e.g. superconductor · CPC title

• G06F3/041

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