Vibration panel, manufacturing method and driving method therefor and vibration apparatus

Patent metadata

Field	Value
Publication number	US-12446472-B2
Application number	US-202117757805-A
Country	US
Kind code	B2
Filing date	Aug 27, 2021
Priority date	Aug 27, 2021
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

Disclosed are a vibration panel, a manufacturing method and driving method therefor and a vibration apparatus. The vibration panel includes: a base substrate having at least one vibration element, where at least one annular hollow pattern is provided at a portion, corresponding to each vibration element, of the base substrate, an orthographic projection of the annular hollow pattern corresponding to each vibration element on the base substrate is non-closed, and the annular hollow pattern corresponding to each vibration element has a different total area; and at least one driver positioned on one side of the base substrate, each driver being configured to drive at least one vibration element to independently vibrate.

First claim

What is claimed is:

1. A vibration panel, comprising:
a base substrate, comprising at least one vibration element, wherein at least one annular hollow pattern is provided at a portion, corresponding to each of the at least one vibration element, of the base substrate, an orthographic projection of an annular hollow pattern corresponding to the each vibration element on the base substrate is non-closed, and the annular hollow pattern corresponding to the each vibration element has a different total area; and
at least one driver, arranged on one side of the base substrate, wherein the at least one driver is configured to drive the at least one vibration element to independently vibrate.

2. The vibration panel according to claim 1 , further comprising a reinforcement structure arranged on one side of the base substrate, wherein the reinforcement structure is arranged in an innermost region of the annular hollow pattern.

3. The vibration panel according to claim 2 , wherein the reinforcement structure comprises a counterweight layer, wherein the counterweight layer and the at least one driver are arranged on a same side of the base substrate.

4. The vibration panel according to claim 3 , wherein the counterweight layer is made of at least one of the following materials: molybdenum (Mo), cuprum (Cu) and aluminum (Al):
wherein a shape of the counterweight layer is an axisymmetric figure or a centrosymmetric figure, and a center of the counterweight layer coincides with a center of a corresponding vibration element.

5. The vibration panel according to claim 4 , wherein the shape of the counterweight layer comprises at least one of:
a square;
a circle;
an annulus;
a polygon; and
an annular structure, wherein the annular structure comprises a plurality of sub-structures arranged at intervals, and the plurality of sub-structures are uniformly arranged around a center of a corresponding vibration element at intervals.

6. The vibration panel according to claim 2 , wherein the reinforcement structure comprises a raised layer, wherein the raised layer and the at least one driver are arranged on opposite sides of the base substrate.

7. The vibration panel according to claim 6 , wherein the raised layer is made of at least one of the following materials: polydimethylsiloxane, polyethylene terephthalate and polycarbonate:
wherein the raised layer is in a shape of an axisymmetric figure or a centrosymmetric figure, and a center of the raised layer coincides with a center of a corresponding vibration element.

8. The vibration panel according to claim 7 , wherein the raised layer is of an integrated structure; or,
the raised layer comprises a first raised portion arranged in the center of the corresponding vibration element and at least one second annular raised portion arranged around the first raised portion, and an orthographic projection of the second annular raised portion on the base substrate is closed or non-closed; or,
the raised layer comprises at least one second annular raised portion arranged around the center of the corresponding vibration element, and an orthographic projection of the second annular raised portion on the base substrate is closed or non-closed.

9. The vibration panel according to claim 8 , wherein the non-closed second annular raised portion comprises an even number of second raised sub-portions, and any two second raised sub-portions at opposite positions are symmetrically arranged with the center of the corresponding vibration element as a center of symmetry.

10. The vibration panel according to claim 1 , wherein a shape of the annular hollow pattern comprises a centrosymmetric figure, and a center of symmetry of the centrosymmetric figure coincides with the center of a corresponding vibration element.

11. The vibration panel according to claim 1 , wherein the annular hollow pattern comprises a plurality of sub-portions, and the plurality of sub-portions are uniformly arranged around a center of a corresponding vibration element at intervals, and
each of the plurality of sub-portions is in a shape of any one of: an arc and a polygonal box.

12. The vibration panel according to claim 11 , wherein an even number of sub-portions are arranged, and two sub-portions at opposite positions are symmetrically arranged with the center of the corresponding vibration element as a center of symmetry.

13. The vibration panel according to claim 1 , wherein for the each vibration element corresponding to the annular hollow pattern having a different total area, the annular hollow pattern in the each vibration element is identical in number and different in size; or,
for the each vibration element corresponding to the annular hollow pattern having a different total area, the annular hollow pattern in the each vibration element is different in number and identical in size.

14. The vibration panel according to claim 1 , wherein each of the at least one driver drives four vibration elements to independently vibrate, the hollow pattern corresponding to each of the four vibration elements has a different total area, and the each driver is arranged in a middle of the four vibration elements.

15. The vibration panel according to claim 14 , wherein the each driver is a piezoelectric device, and the piezoelectric device comprises a first electrode, a piezoelectric layer and a second electrode that are stacked on the base substrate;
first electrodes corresponding to piezoelectric devices in a same row are a same electrode, and the first electrodes extend in a first direction; second electrodes corresponding to piezoelectric devices in a same column are a same electrode, and the second electrodes extend in a second direction; and the first direction and the second direction intersect with each other.

16. The vibration panel according to claim 14 , wherein the each driver is a piezoelectric device, and the piezoelectric device comprises a first electrode, a piezoelectric layer and a second electrode that are stacked on the base substrate;
the vibration panel further comprises a plurality of scanning lines and a plurality of voltage input lines that intersect with each other, the plurality of scanning lines and the plurality of voltage input lines define a plurality of vibration regions, and each of the plurality of vibration regions comprises four vibration elements; and
the each vibration region comprises a switching transistor, gate electrodes of switching transistors corresponding to piezoelectric devices in a same row are electrically connected to a same scanning line, first electrodes of the switching transistors corresponding to the piezoelectric devices in a same column are electrically connected to a same voltage input line, second electrodes of the switching transistors are electrically connected to first electrodes of the corresponding piezoelectric devices, and second electrodes of the piezoelectric devices are electrically connected to fixed potential terminals.

17. The vibration panel according to claim 16 , wherein the each vibration region further comprises a capacitor, a first terminal of the capacitor is connected between a second electrode of a corresponding switching transistor and a first electrode of a corresponding piezoelectric device, and a second terminal of the capacitor is connected between a second electrodes of the corresponding piezoelectric device and a fixed potential terminal.

18. A method for driving the vibration panel of claim 1 , comprising:
adjusting a frequency of an alternating voltage for driving a driver to enable the e

Assignees

• Beijing Boe Technology Dev Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Liu Xiaotong
• Chen Yuju

Classifications

• G06F3/03547

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

• G06F3/0446

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

• G06F3/041

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

• H10N39/00 Primary

  Integrated devices, or assemblies of multiple devices, comprising at least one piezoelectric, electrostrictive or magnetostrictive element covered by groups H10N30/00 – H10N35/00 · CPC title