SAW - Surface acoustic wave

The Touch surface wave has transmitting and receiving piezoelectric transducers for the X and Y axes mounted directly on the faceplate. The controller sends five-megahertz electrical to the transmitting transducer ,which converts the signal into ultrasonic waves within the surface of the glass .these wave are directed across the faceplate by an array of reflectors .Reflectors on the opposite side gather and direct the waves to the receiving transducer ,which reconverts them into an electrical signal .the process is repeated for each axis. When you touch the screen,you absorb a portion of the waves traveling across it .the received signals for X and Y are compared to the stored digital maps ,the change is recognized ,and a coordinate is calculated .

Features of SAW

• Pure glass touch screens with superior image clarity, high resolution, good quality light transmition.
• Durable, scratch-resistance glass surface, continues to work if scratched.
• High touch point density: over 10000 touch points per square inch.
• Good stableness without drift, automatic correction, accurate operation.
• Long life expectance, over 50 million touches in one location without failure.
• Long touch screens warranty is also available.
• Finger, gloved hand, and soft stylus activation.

 

	Model No	Size	Outside dimension	Viewing area	Active area	Resolution
	TT104-s	10.4"	244 x 187	217 x 161	215 x 159	4096 x 4096
	TT015-s	15"	330 x 257	308 x 232	306 x 230	4096 x 4096
	TT017-s	17"	382 x 312	346 x 278	340 x 272	4096 x 4096
	TT019-s	19"	418 x 341	386 x 307	382 x 305	4096 x 4096
	TT020-s	20"	472 x 314	438 x 276	434 x 272	4096 x 4096
	TT022-s	22"	445 x 355	407 x 312	407 x 305	4096 x 4096
	TT029-s	29"	590 x 460	547 x 411	542 x 406	4096 x 4096