Touch display device, method for controlling same, and computer storage medium

A touch display device, comprising:

• a display screen and at least two optical pair transistor groups, wherein
• the display screen comprises a curved screen;
• the display screen has a first edge and a second edge that are opposite to each other, wherein the first edge and the second edge are both curved;
• the optical pair transistor group comprises a plurality of through-beam units, wherein each of the through-beam units comprises an emitter and a receiver, the emitter is disposed on an outer side of the first edge, the receiver is disposed on an outer side of the second edge, and a light outlet of the emitter is oriented towards a light inlet of the receiver;
• and
• the at least two optical pair transistor groups comprise a first optical pair transistor group and a second optical pair transistor group, wherein an extension direction of a light ray emitted by the through-beam unit in the first optical pair transistor group is intersected with an extension direction of a light ray emitted by the through-beam unit in the second optical pair transistor group.