ELEMENT SUBSTRATE, LIQUID DISCHARGE HEAD, AND PRINTING APPARATUS

摘要

According to one embodiment, an element substrate includes: heater arrays each having heaters arranged in parallel; corresponding transistors for driving the heaters included in the heater arrays; a first pad for supplying a voltage to be applied to the heaters; and a second pad for grounding the heaters. The element substrate is provided with a first wiring for connecting the first pad to the heaters, and a second wiring for connecting the heaters to the second pad. Furthermore, sizes of the transistors included in a heater array, of the heater arrays, provided at a position where intervals with respect to the first pad and the second pad are relatively large are set to be larger than the sizes of the transistors included in a heater array provided at a position where the intervals are relatively small.

主权项

1. An element substrate comprising a plurality of heater arrays arranged in parallel and each formed by arranging a plurality of heaters, a plurality of transistors corresponding to the plurality of heaters included in the plurality of heater arrays and configured to drive the plurality of heaters, a first electrode pad configured to supply a voltage to be applied to the plurality of heaters, a second electrode pad configured to ground the plurality of heaters, a first wiring configured to connect the first electrode pad to the plurality of heaters, and a second wiring configured to connect the plurality of heaters to the second electrode pad, wherein
sizes of the plurality of transistors included in the heater array, of the plurality of heater arrays, provided at a position where intervals with respect to the first electrode pad and the second electrode pad are relatively large are set to be larger than sizes of the plurality of transistors included in the heater array provided at a position where the intervals with respect to the first electrode pad and the second electrode pad are relatively small.