LIQUID EJECTING APPARATUS, PRINT HEAD UNIT, AND DRIVE SUBSTRATE

摘要

A plurality of THs are formed in the main substrate (drive substrate) in a region in which switching transistors are disposed. In addition, a solid pattern obtained by expanding an interconnection pattern at the periphery of the transistors is formed to surround the transistors. In addition, a solid pattern for heat dissipation is also formed on a rear surface to add a heat dissipation structure for a frame. According to this, it is possible to provide a liquid ejecting apparatus which has a simple configuration and which realizes operation stability without using a dedicated heat dissipation component.

主权项

1. A liquid ejecting apparatus, comprising:
an A/D converter that performs pulse modulation of an original drive signal at a high frequency region to generate a modulation signal; a transistor that amplifies the modulation signal to generate an amplified modulation signal; a filter circuit that smooths the amplified modulation signal to generate a drive signal; an ejection unit that is subjected to an ejection operation by the drive signal to eject liquid droplets; and a substrate on which at least the transistor is disposed, wherein through-holes are formed in the substrate in a region in which the transistor is disposed.