Substrate and method for cutting the same, and electronic device and electronic apparatus

Patent metadata

Field	Value
Publication number	US-12306483-B2
Application number	US-202117780053-A
Country	US
Kind code	B2
Filing date	Apr 13, 2021
Priority date	May 29, 2020
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

A substrate includes at least two edges; and at least one end portion, each end portion is connected to two adjacent edges. The end portion includes a cutting section and two breaking sections; an end of the cutting section is connected to one of the two adjacent edges through a breaking section, and another end of the cutting section is connected to another one of the two adjacent edges through another breaking section. The cutting section is configured to be formed through cutting of a tool, and the breaking sections are configured to be formed under an action of a physical force.

First claim

What is claimed is:

1. A substrate, comprising:
at least two edges; and,
at least one end portion, each end portion being connected to two adjacent edges, wherein
the end portion includes a cutting section and two breaking sections; an end of the cutting section is connected to one of the two adjacent edges through a breaking section, and another end of the cutting section is connected to another one of the two adjacent edges through another breaking section;
the cutting section is configured to be formed through cutting of a tool, and the breaking sections are configured to be formed under an action of a physical force;
wherein an orthographic projection of the cutting section on a plane where the substrate is located includes:
a first circular arc, an arc center of the first circular arc being located at an inside of the substrate; and
at least one of a second circular arc and a third circular arc, wherein
a first end of the second circular arc is connected to an orthographic projection of a breaking section of the two breaking sections on the plane where the substrate is located, and a second end of the second circular arc is directly or indirectly connected to a first end of the first circular arc;

an arc center of the second circular arc is located at an outside of the substrate; and
a first end of the third circular arc is connected to an orthographic projection of another breaking section of the two breaking sections on the plane where the substrate is located, and a second end of the third circular arc is directly or indirectly connected to a second end of the first circular arc; an arc center of the third circular arc is located at an outside of the substrate;
wherein the first circular arc, the second circular arc and the third circular arc are located in an orthographic projection of a same end portion on the plane where the substrate is located.

2. The substrate according to claim 1 , wherein the at least one of the second circular arc and the third circular arc is directly connected to the first circular arc; any one, included in the orthographic projection of the cutting section on the plane where the substrate is located, of the second circular arc and the third circular arc serves as a sixth circular arc, a radius of the sixth circular arc is r 21 , and r 21 satisfies a following formula:

r
21

=

k
1

·

2

·
s
·

tan
[

225
⁢
°

-

arcsin
⁡
(

r
1

·

cos
⁡
(

45
⁢
°

-

α
/
2

)

-
s

r
1

)

2

]

,

where k 1 is in a range of 1 to 2, inclusive; r 1 is a radius of the first circular arc; s is a first limit value; α is a central angle corresponding to an auxiliary circular arc, the auxiliary circular arc is obtained by extending the first circular arc, and a distance from an end of two opposite ends of the auxiliary circular arc to an edge, adjacent to the end, of the two adjacent edges and a distance from another end of the two opposite ends of the auxiliary circular arc to another edge, adjacent to the another end, of the two adjacent edges are each equal to a second limit value.

3. The substrate according to claim 1 , wherein the at least one of the second circular arc and the third circular arc is indirectly connected to the first circular arc; and
the orthographic projection of the cutting section on the plane where the substrate is located further includes at least one of a first straight line segment and a second straight line segment, wherein
a first end of the first straight line segment is connected to the second end of the second circular arc, and a second end of the first straight line segment is connected to the first end of the first circular arc; and
a first end of the second straight line segment is connected to the second end of the third circular arc, and a second end of the second straight line segment is connected to the second end of the first circular arc.

4. The substrate according to claim 3 , wherein the orthographic projection of the cutting section on the plane where the substrate is located includes the second circular arc and the first straight line segment, the first straight line segment is tangent to both the second circular arc and the first circular arc; or
the orthographic projection of the cutting section on the plane where the substrate is located includes the third circular arc and the second straight line segment, the second straight line segment is tangent to both the third circular arc and the first circular arc; or
the orthographic projection of the cutting section on the plane where the substrate is located includes the second circular arc, the third circular arc, the first straight line segment and the second straight line segment, the first straight line segment is tangent to both the second circular arc and the first circular arc, and the second straight line segment is tangent to both the third circular arc and the first circular arc.

5. The substrate according to claim 3 , wherein any one, included in the orthographic projection of the cutting section on the plane where the substrate is located, of the second circular arc and the third circular arc serves as a sixth circular arc, a radius of the sixth circular arc is r 22 , and r 22 satisfies a following formula:

r
22

=

k
1

·

Assignees

• Boe Hebei Mobile Display Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Song Chunlei
• Zeng Lei
• Wang Wenliang
• Zheng Liangliang

Classifications

• B23K26/38 Primary

  by boring or cutting · CPC title

• B23K26/702

  Auxiliary equipment · CPC title

• B32B38/10

  Removing layers, or parts of layers, mechanically or chemically · CPC title

• H04M1/03

  Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets · CPC title

• H10K59/10

  OLED displays · CPC title