Touch screen panel and electronic device

Patent metadata

Field	Value
Publication number	US-12299244-B2
Application number	US-202218035371-A
Country	US
Kind code	B2
Filing date	Dec 8, 2022
Priority date	Mar 11, 2022
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A touch screen panel and an electronic device. A touch integrated circuit layer in the touch screen panel includes a first insulating layer, a first metal layer, a second insulating layer, a second metal layer, and an overlay layer that are stacked. The first metal layer is located between the first insulating layer and the second insulating layer, the second metal layer is located between the second insulating layer and the overlay layer, and the first insulating layer is located between the substrate layer and the first metal layer. The first metal layer and the second metal layer jointly form a touch functional layer, and the touch functional layer at least includes at least one driving electrode unit and a plurality of sensing electrode units. The at least one driving electrode unit is electrically insulated from the plurality of sensing electrode units, and each sensing electrode unit is serrated.

First claim

What is claimed is:

1. A touch screen panel, comprising:
a substrate layer; and
a touch integrated circuit layer located above the substrate layer,
wherein the touch integrated circuit layer comprises a first insulating layer, a first metal layer, a second insulating layer, a second metal layer, and an overlay layer that are stacked;
wherein the first metal layer is located between the first insulating layer and the second insulating layer, the second metal layer is located between the second insulating layer and the overlay layer, and the first insulating layer is located between the substrate layer and the first metal layer;
wherein the first metal layer and the second metal layer jointly form a touch functional layer, the touch functional layer comprises at least one driving electrode and a plurality of sensing electrodes, the at least one driving electrode is electrically insulated from the plurality of sensing electrodes, and each sensing electrode is serrated;
wherein the substrate layer comprises a pixel definition layer and a plurality of light sources located on the pixel definition layer;
wherein the touch functional layer further comprises metal wires, and the metal wires are distributed among the plurality of light sources to form metal grids, to isolate each light source from remaining light sources in the plurality of light sources; and
wherein a first notch is disposed on the second insulating layer, and the first metal layer and the second metal layer are connected through the first notch.

2. The touch screen panel according to claim 1 ,
wherein a partial area of the overlay layer extends toward an inside of the second metal layer to form an insulating extension layer; and
wherein a projection area of the insulating extension layer on the first metal layer is located in a projection area of the first notch on the first metal layer.

3. The touch screen panel according to claim 1 ,
wherein materials used for the first insulating layer and the second insulating layer are organic materials; or
wherein materials used for the first insulating layer and the second insulating layer are inorganic materials.

4. The touch screen panel according to claim 1 ,
wherein the second metal layer comprises a plurality of touch pixels;
wherein each touch pixel of the plurality of touch pixels comprises the driving electrode, and a first sensing electrode group and a second sensing electrode group that are separately electrically insulated from the driving electrode;
wherein the first sensing electrode group comprises at least one sensing electrode, the second sensing electrode group comprises at least one sensing electrode, and the at least one sensing electrode in the first sensing electrode group is spaced from and distributed opposite to the at least one sensing electrode in the second sensing electrode group in a first direction; and
wherein each sensing electrode in the first sensing electrode group is connected to one sensing electrode that is in the first sensing electrode group and that is opposite to the sensing electrode in the first sensing electrode group in the first direction.

5. The touch screen panel according to claim 4 ,
wherein the first sensing electrode group comprises three spaced sensing electrodes arranged in a second direction, the second sensing electrode group comprises three spaced sensing electrodes arranged in the second direction, and the three sensing electrodes in the first sensing electrode group are spaced from and distributed opposite to the three sensing electrodes in the second sensing electrode group in the first direction;
wherein each sensing electrode in the first sensing electrode group is connected to one sensing electrode that is in the first sensing electrode group and that is opposite to the sensing electrode in the first sensing electrode group in the first direction; and
wherein the second direction is perpendicular to the first direction.

6. The touch screen panel according to claim 4 ,
wherein the touch functional layer further comprises a plurality of bridges, the sensing electrode in each first sensing electrode group is electrically connected to the sensing electrode in the second sensing electrode group by using a bridge from the plurality of bridges; and
wherein the first metal layer is used as the bridge.

7. The touch screen panel according to claim 6 , wherein the sensing electrode in each first sensing electrode group is electrically connected to the sensing electrode in the second sensing electrode group by using two bridges.

8. The touch screen panel according to claim 4 , wherein the touch integrated circuit layer further has a plurality of second notches, and each second notch of the plurality of second notches is located between two adjacent sensing electrodes in a same sensing electrode group.

9. The touch screen panel according to claim 8 , wherein the second notch is serrated, and an extension direction of each second notch of the plurality of second notches is the same as an extension direction of the sensing electrode.

10. The touch screen panel according to claim 9 ,
wherein each second notch of the plurality of second notches comprises a second body part and a plurality of second serrated parts connected to the second body part;
wherein a size of each second serrated part in a length direction of each second notch is more than two times a pixel pitch of the plurality of light sources;
wherein a size of each second serrated part in a width direction of each second notch is more than two times the pixel pitch of the plurality of light sources; and
wherein a spacing between two adjacent second serrated parts located on a same side of the second body part is more than two times the pixel pitch of the plurality of light sources.

11. The touch screen panel according to claim 1 , wherein materials used for the first insulating layer and the second insulating layer are organic materials.

12. The touch screen panel according to claim 11 ,
wherein the touch functional layer comprises a plurality of touch pixels;
wherein each touch pixel comprises the driving electrode, and a first sensing electrode group and a second sensing electrode group that are separately electrically insulated from the driving electrode;
wherein the first sensing electrode group comprises at least one sensing electrode, the second sensing electrode group comprises at least one sensing electrode, and the at least one sensing electrode in the first sensing electrode group is spaced from and distributed opposite to the at least one sensing electrode in the second sensing electrode group in a first direction; and
wherein each sensing electrode in the first sensing electrode group is connected to one sensing electrode that is in the first sensing electrode group and that is opposite to the sensing electrode in the first sensing electrode group in the first direction; and
wherein the first metal layer is used as the driving electrode, and the second metal layer is used as the sensing electrode.

13. The touch screen panel according to claim 12 ,
wherein the first sensing electrode group comprises three spaced sensing electrodes arranged in a second direction, the second sensing electrode group comprises three spaced sensing electrodes arranged in the second direction, and the three sensing electrodes in the first sensing electrode group are spaced from and distributed opposite to the three sensing electrodes in the second sensing electrode group in the first direction;
wherein each sensing electrode in the first sensing electrode group is connected to one sensing electrode that is in the first sen

Assignees

• Honor Device Co Ltd

Inventors

• Guo Dawei

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

• G06F3/0446 Primary

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

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title