Title:
DISPLAY DEVICE, AND ELECTRONIC INSTRUMENT
Document Type and Number:
WIPO Patent Application WO/2023/008053
Kind Code:
A1
Abstract:
[Problem] To provide a display device and an electronic instrument with which contact sound and friction sound are suppressed, and which has an excellent tactile sensation associated with ultrasonic vibrations. [Solution] A display device according to the present invention is provided with a haptic panel and a piezoelectric actuator. The haptic panel has a first main surface, and a second main surface on the opposite side to the first main surface. The piezoelectric actuator is disposed on the second main surface and generates vibrations. The first main surface includes a rough surface region in which a surface roughness Rz is a first surface roughness, and a non-rough surface region in which the surface roughness Rz is a second surface roughness that is 0.001 times to 0.8 times, inclusive, the first surface roughness, wherein the surface area ratio of the rough surface region of the first main surface is 30% to 90%, inclusive.
Inventors:
ITO FUMIHISA (JP)
MATSUI YUKIHIRO (JP)
HAMADA HIROSHI (JP)
MATSUI YUKIHIRO (JP)
HAMADA HIROSHI (JP)
Application Number:
PCT/JP2022/025719
Publication Date:
February 02, 2023
Filing Date:
June 28, 2022
Export Citation:
Assignee:
TAIYO YUDEN KK (JP)
International Classes:
G06F3/041
Foreign References:
| JP2017045419A | 2017-03-02 | |||
| JP2019016111A | 2019-01-31 |
Attorney, Agent or Firm:
MINAMI AOYAMA PATENT AND TRADEMARK ATTORNEYS (JP)
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