Touch display substrate and touch display device

A touch display substrate, comprising a substrate, a plurality of ultrasonic sensors disposed on the substrate, and one ultrasonic generator, as a single piece, disposed on the substrate, wherein

• the ultrasonic generator has a plurality of openings therein, the plurality of ultrasonic sensors are disposed in the plurality of openings, respectively, the plurality of ultrasonic sensors and the ultrasonic generator are disposed in substantially a same later, and an edge of each of the plurality of ultrasonic sensors is surrounded by the ultrasonic generator,
• wherein each of the ultrasonic sensors comprises a data electrode, a bias electrode, and a sensing piezoelectric layer disposed between the data electrode and the bias electrode, and the ultrasonic generator comprises an upper electrode, a lower electrode, and a generating piezoelectric layer disposed between the upper electrode and the lower electrode;
• wherein the data electrode and the upper electrode are disposed substantially in a same layer and are electrically insulated from each other, and the bias electrode and the lower electrode are disposed substantially in a same layer and are electrically insulated from each other;
• and
• wherein the data electrode is connected to a common electrode of the display substrate, and the upper electrode of the ultrasonic generator and the common electrode are provided with an insulating layer therebetween such that the upper electrode is electrically insulated from the common electrode, and the upper electrode, the generating piezoelectric layer, the lower electrode, the insulating layer and the common electrode are in sequential layers.

A touch display substrate, comprising a substrate, a plurality of ultrasonic sensors disposed on the substrate, and one ultrasonic generator disposed on the substrate, wherein

• the ultrasonic generator has a plurality of openings, and at least one of the plurality of ultrasonic sensors is disposed in at least one of the plurality of openings,
• wherein each of the ultrasonic sensors comprises a data electrode, a bias electrode, and a sensing piezoelectric layer disposed between the data electrode and the bias electrode, and the ultrasonic generator comprises an upper electrode, a lower electrode, and a generating piezoelectric layer disposed between the upper electrode and the lower electrode;
• wherein the data electrode and the lower electrode are disposed substantially in a same layer and are electrically insulated from each other, and the bias electrode and the upper electrode are disposed substantially in a same layer and are electrically insulated from each other;
• and
• wherein the bias electrode is connected to a common electrode of the display substrate, with the bias electrode and the common electrode being in directly adjacent layers or the bias electrode and the common electrode are formed as a single piece, and the upper electrode of the ultrasonic generator and the common electrode are provided with an insulating layer therebetween such that the upper electrode is electrically insulated from the common electrode, and the upper electrode, the generating piezoelectric layer, the lower electrode, the insulating layer and the common electrode are in sequential layers.