Abstract: A crystal blank includes a pair of tableland-shaped first mesa parts projecting from a flat plate and a pair of tableland-shaped second mesa parts projecting from the pair of first mesa parts. The flat plate's length in a long direction is less than 1000 ?m. The first mesa part is on an inner side of the flat plate's major surface. The second mesa part is on the first mesa part's inner side of an upper surface's outer edge at two ends of the long direction and has a width equivalent to the first mesa part's upper surface at two sides of a short direction. An excitation electrode reaches the second mesa part's outer edge of the upper surface, is located on the inner side of the first mesa part, and on the second mesa part's inner side of the upper surface's outer edge at two sides of the short direction.

Abstract: A crystal blank includes a pair of tableland-shaped first mesa parts projecting from a flat plate and a pair of tableland-shaped second mesa parts projecting from the pair of first mesa parts. The flat plate's length in a long direction is less than 1000 ?m. The first mesa part is on an inner side of the flat plate's major surface. The second mesa part is on the first mesa part's inner side of an upper surface's outer edge at two ends of the long direction and has a width equivalent to the first mesa part's upper surface at two sides of a short direction. An excitation electrode reaches the second mesa part's outer edge of the upper surface, is located on the inner side of the first mesa part, and on the second mesa part's inner side of the upper surface's outer edge at two sides of the short direction.

Abstract: The present invention aims at providing a piezoelectric substrate that is less susceptible to the influence of adhesive after being subjected to connection, as well as an assembly, a liquid discharge head, and a recording device, each of which uses the piezoelectric substrate. The piezoelectric substrate of the present invention is a flat plate shaped piezoelectric substrate including a piezoelectric ceramic layer, a plurality of first electrodes, a second electrode, and a third electrode. The second electrode includes an outer peripheral part disposed so as to surround the entirety of the first electrodes, and a protrusion extending from the outer peripheral part toward the inside of the outer peripheral part when the piezoelectric substrate is viewed from above. The second electrode and the third electrode are electrically connected to each other at the protrusion. The outer peripheral part is used for an electrical connection with the outside.

Abstract: The present invention aims at providing a piezoelectric substrate that is less susceptible to the influence of adhesive after being subjected to connection, as well as an assembly, a liquid discharge head, and a recording device, each of which uses the piezoelectric substrate. The piezoelectric substrate of the present invention is a flat plate shaped piezoelectric substrate including a piezoelectric ceramic layer, a plurality of first electrodes, a second electrode, and a third electrode. The second electrode includes an outer peripheral part disposed so as to surround the entirety of the first electrodes, and a protrusion extending from the outer peripheral part toward the inside of the outer peripheral part when the piezoelectric substrate is viewed from above. The second electrode and the third electrode are electrically connected to each other at the protrusion. The outer peripheral part is used for an electrical connection with the outside.

Abstract: A display panel stand holding portion for supporting the display panel in the standing position is formed at the upper end portion of the back cabinet as a part of the casing of the display device. The display panel stand holding portion includes the display panel stand mount portion, and the display panel support members. This makes it possible to support the display panel vertically when it is mounted on the display panel stand mount portion. The connector cables extending from the power supply circuit board is clamped to the temporary holding portion to be formed on the back cabinet before assembly of the display panel to be inclined at the predetermined position. The deterioration in the working efficiency caused by entanglement of the connector cables may be prevented.

Abstract: The present invention provides a display device that facilitates product inspection and maintenance. A button section is mounted to a back cabinet, and a power-source circuit board is fitted into a circuit-board fitting slit. Furthermore, the power-source circuit board is locked and fixed by a first circuit-board locking claw, and a main circuit board is locked and fixed by a second circuit-board locking claw. A speaker integrally assembled in a speaker holder is locked and fixed by a speaker locking claw, and thereafter a display panel is caused to be held by a display panel standing holding portion in a standing manner. The wire connection work of a display panel, each of the circuit boards, and the like is performed, the display panel is brought down and placed on a display panel placement portion, a front cabinet is mounted, and a leg portion is mounted to a leg-portion mounting portion.

Abstract: A display panel stand holding portion for supporting the display panel in the standing position is formed at the upper end portion of the back cabinet as a part of the casing of the display device. The display panel stand holding portion includes the display panel stand mount portion, and the display panel support members. This makes it possible to support the display panel vertically when it is mounted on the display panel stand mount portion. The connector cables extending from the power supply circuit board is clamped to the temporary holding portion to be formed on the back cabinet before assembly of the display panel to be inclined at the predetermined position. The deterioration in the working efficiency caused by entanglement of the connector cables may be prevented.

Abstract: A cabinet-fixing locking nail and a locking stopper are formed at a fixing unit which is integrally attached to a button portion. The button portion is fixed to a back cabinet through the fixing unit, by locking the cabinet-fixing locking nail and the locking stopper to the back cabinet. A power circuit board is clipped to circuit board engagement slits which are guide grooves formed at the fixing unit and the button portion, and the power circuit board is locked by a first circuit board locking nail which is formed at the back cabinet to be fixed. The power circuit board and the button portion can be readily fixed only by a locking unit such as the cabinet-fixing locking nail, the locking stopper, the circuit board engagement slits the first circuit board locking nail and the like without using screw.