Surface acoustic wave touch screen with concealed touch components

Abstract

The invention relates to a surface acoustic wave touch screen with concealed touch components, which comprises a screen body, the touch components and a touch region arranged on an orthographic projection surface of the screen body. The touch components comprise a transducer, a reflecting unit array and a touch screen signal line, the touch components are coupled on the back of the orthographic projection surface of the touch region, namely the back of the screen body, the back of the screen body comprises a plane and a transition surface between the plane and a surface with the touch region, and printing ink for shielding the touch components is coated on the back of the screen body along a sound energy transmission path direction. Sound energy transmission intensity on the screen body is strengthened, energy loss due to the fact that sound energy is transmitted from a surface to another surface is reduced, the touch region is arranged on the orthographic projection surface without any touch components, the sound energy reflected by the back is transmitted to a touch surface, the purpose that the touch surface does not have blind areas completely can be realized, and performances of the touch screen are not affected assuredly.

Description

technical field [0001] The invention relates to an acoustic wave touch positioning system, in particular to a surface acoustic wave touch screen without any touch device on the surface of the touch surface. Background technique [0002] The ordinary surface acoustic wave touch screen is composed of a screen body, a transmitting transducer, a receiving transducer, an array of reflective elements and a signal line. In order to locate the touch coordinates, usually the reflective element array and the transducer are coupled on the same touch plane. The touch device generally includes a transmitting transducer, a receiving transducer, a reflective unit array, and a signal line, while the existing surface acoustic wave touch screen occupies a certain position because the reflective unit array and the transducer are distributed on the same touch plane, which is optimized for installation. Bringing difficulties, especially when designing a frameless structure, the transducer is si...

AI Technical Summary

Problems solved by technology

[0004] patent CN2546945Y proposes a surface acoustic wave touch screen in which the reflective unit array and the touch surface are not on the same plane, but the transducer is still in the front view direction of the touch screen, which cannot be hidden The purpose of touch devices

[0005] Patent CN202133983U proposes a surface acoustic wave touch screen in which the reflective unit array and the transducer are placed on different planes. Although the patent places the transducer on the back of the touch surface, the reflective unit array is still placed on the touch surface, which cannot be hidden. The purpose of touching the device, and the position occupied by the reflective unit array cannot be touched, and there is a blind area

Images