Touch panel and touch display panel

Patent metadata

Field	Value
Publication number	US-11269472-B2
Application number	US-201916958964-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Jul 31, 2019
Publication date	Mar 8, 2022
Grant date	Mar 8, 2022

Abstract

The present disclosure provides a touch panel and a touch display panel. The touch panel includes: a base substrate, and a first conductive layer, an insulation layer, and a second conductive layer that are sequentially arranged along a direction away from the base substrate. The first conductive layer includes: a first touch electrode, a second touch electrode, a third touch electrode, a fourth touch electrode, a first connection electrode, and a second connection electrode. The insulation layer includes: two first insulation pads, two second insulation pads, two third insulation pads, and two fourth insulation pads. The second conductive layer includes: two first conductive bridges, two second conductive bridges, two third conductive bridges, and two fourth conductive bridges. The present disclosure is applied to touch panels.

First claim

What is claimed is:

1. A touch panel, comprising: a base substrate, a first conductive layer, an insulation layer, and a second conductive layer that are sequentially arranged along a direction away from the base substrate; wherein
the first conductive layer comprises: a first touch electrode, a second touch electrode, a third touch electrode, a fourth touch electrode, a first connection electrode, and a second connection electrode; wherein the first connection electrode is in an annular shape and surrounds the second connection electrode, the first touch electrode and the second touch electrode are disposed on both sides of the first connection electrode in a first direction, and the third touch electrode and the fourth touch electrode are disposed on both sides of the first connection electrode in a second direction, an included angle between the first direction and the second direction being greater than zero;
the insulation layer comprises: two first insulation pads, two second insulation pads, two third insulation pads, and two fourth insulation pads; wherein one end of each of the two first insulation pads is overlapped onto the first touch electrode, and the other end of each of the two first insulation pads is overlapped onto the first connection electrode; one end of each of the two second insulation pads is overlapped onto the second touch electrode, and the other end of each of the two second insulation pads is overlapped onto the first connection electrode; one end of each of the two third insulation pads is overlapped onto the third touch electrode, and the other end of each of the two third insulation pads spans the first connection electrode and is overlapped onto the second connection electrode; one end of each of the two fourth insulation pads is overlapped onto the fourth touch electrode, and the other end of each of the two fourth insulation pads spans the first connection electrode and is overlapped onto the second connection electrode;
the second conductive layer comprises: two first conductive bridges, two second conductive bridges, two third conductive bridges, and two fourth conductive bridges; wherein the two first conductive bridges one-to-one correspond to the two first insulation pads, each of the first conductive bridges is disposed on the corresponding first insulation pad, and both ends of each of the first conductive bridges are electrically connected to the first touch electrode and the first connection electrode respectively; the two second conductive bridges one-to-one correspond to the two second insulation pads, each of the second conductive bridges is disposed on the corresponding second insulation pad, and both ends of each of the second conductive bridges are electrically connected to the second touch electrode and the first connection electrode respectively; the two third conductive bridges one-to-one correspond to the two third insulation pads, each of the third conductive bridges is disposed on the corresponding third insulation pad, and both ends of each of the third conductive bridges are electrically connected to the third touch electrode and the second connection electrode respectively; and the two fourth conductive bridges one-to-one correspond to the two fourth insulation pads, each of the fourth conductive bridges is disposed on the corresponding fourth insulation pad, and both ends of each of the fourth conductive bridges are electrically connected to the fourth touch electrode and the second connection electrode respectively.

2. The touch panel according to claim 1 , wherein an orthographic projection of the first connection electrode on the base substrate is in the shape of an octagonal ring; an orthographic projection of the second connection electrode on the base substrate is in the shape of an octagon, and eight inner edges in the octagonal ring are parallel to eight edges of the octagon in one-to-one correspondence.

3. The touch panel according to claim 2 , wherein
a ring width of the first connection electrode in the first direction is greater than a ring width of the first connection electrode in the second direction;
a maximum length of the first connection electrode in the first direction is greater than a maximum length of the first connection electrode in the second direction; and
a maximum length of the second connection electrode in the first direction is less than a maximum length of the second connection electrode in the second direction.

4. The touch panel according to claim 3 , wherein the octagon has a first symmetry axis and a second symmetry axis, the first symmetry axis being parallel to the first direction, and the second symmetry axis being parallel to the second direction; wherein
the two first conductive bridges are symmetrical with respect to the first symmetry axis, the two second conductive bridges are symmetrical with respect to the first symmetry axis, and the two first conductive bridges and the two second conductive bridges are symmetrical with respect to the second symmetry axis; and
the two third conductive bridges are symmetrical with respect to the second symmetry axis, the two fourth conductive bridges are symmetrical with respect to the second symmetry axis, and the two third conductive bridges and the two fourth conductive bridges are symmetrical with respect to the first symmetry axis.

5. The touch panel according to claim 3 , wherein the two first conductive bridges and the two second conductive bridges are all in a striped shape and perpendicular to an outer edge of the respectively connected octagonal ring, and four outer edges that are perpendicular to the two first conductive bridges and the two second conductive bridges respectively are different;
the two third conductive bridges and the two fourth conductive bridges are all in a fold line shape, and each of the two third conductive bridges and the two fourth conductive bridges comprises two conductive strips; a length of the conductive strip is e, an included angle between the two conductive strips is θ,

2
⁢
d

+
c

2
⁢
sin
⁢

θ
2

<
e
<

1
⁢
0
⁢
0
⁢
um

,

and
⁢

⁢
2
⁢

tan

-
1

⁢

2
⁢
d

+
c

f

<
θ
<
π

;

wherein a distance

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Wang Jiangsheng
• Wu Jianjun
• Pu Shimin

Classifications

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · 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

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title