US 12,103,304 B2
Liquid discharge head and liquid discharge device
Masaki Mori, Shiojiri (JP); Yu Shiozawa, Shiojiri (JP); Hitoshi Takaai, Azumino (JP); Motoki Takabe, Shiojiri (JP); and Eiju Hirai, Azumino (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Nov. 29, 2022, as Appl. No. 18/059,885.
Claims priority of application No. 2021-193702 (JP), filed on Nov. 30, 2021.
Prior Publication US 2023/0166498 A1, Jun. 1, 2023
Int. Cl. B41J 2/045 (2006.01)
CPC B41J 2/04563 (2013.01) [B41J 2/04581 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A liquid discharge head comprising:
a pressure chamber substrate that is provided with a plurality of pressure chambers;
a piezoelectric body that is driven to apply pressure to liquid in the pressure chambers;
an upper electrode that is provided above the piezoelectric body for applying a voltage to the piezoelectric body;
a lower electrode that is provided below the piezoelectric body for applying a voltage to the piezoelectric body;
a detection resistor that is provided below the piezoelectric body for detecting temperature of the liquid in the pressure chambers; and
a first wiring portion that is electrically coupled to the detection resistor, wherein
the first wiring portion includes a first part that is extended above the piezoelectric body, and a second part that is provided in at least a part of a through hole penetrating the piezoelectric body and electrically coupled to the detection resistor.