Industry's First Single-Layer Multi-Touch Capacitive Touch Screen Controller

Integrated Device Technology, Inc., a leading provider of mixed-signal semiconductor solutions, combines advanced technology in the analog and digital worlds to introduce the industry’s first touchscreen controller IC for IDT’s proprietary single-layer multi-touch application. Projected capacitive touch screen technology optimized. This new touchscreen technology and controller solution provides a true single-layered solution without the need for cross-separation points required by other solutions, but maintains a comprehensive multi-touch functionality, which is a revolution in the market. The result is a lower cost overall solution without affecting the functionality and performance of the product. Typical applications include mobile phones, personal navigation devices, and 5-inch screen-size handheld gaming platforms.

The IDT LDS7000 and LDS7001 are high-performance, multi-touch, full-resolution touch screen control ICs with up to 30 to 35 sensor channels. Both controllers respond quickly to touch input at 8ms data rates to improve the user experience and enable advanced applications that require fast response times. The IDT LDS7000 Series' proprietary algorithm eliminates the unwanted multi-touch ghosting effect and provides accurate X and Y coordinates in dual touch mode. This is a key requirement for the use of host-interpreted custom gestures to achieve end product differentiation. . The device's analog front-end design provides a higher level of noise rejection without the need for a separate touch shield in most applications, further reducing overall solution cost.

Alvin Wong, general manager of IDT’s Advanced User Interface Division, said: “The new LDS7000 series touch controller helps customers to take full advantage of IDT's true single-layer touch screen technology. Our innovative design and multi-touch capabilities facilitate the ease of touch screen manufacturers The manufacturing process, while maintaining the key functions required by today's most advanced consumer devices, IDT will continue to expand its position in designing and breakthrough capacitive touch technologies that improve the user experience so that our customers can be competitively marketed. The product."

"The multi-touch controller market continues to expand with the rapid and ever-increasing adoption of smartphones worldwide," said Randy Lawson, principal analyst for Display Electronics at iSuppli Corporation. Since 2010, the explosion of media tablet ICs has increased. With the increasing screen resolution and application processor data rates in these applications, the ability to discern and suppress controller noise has become a more attractive feature for device manufacturers when selecting a supplier of touch screen controller ICs."

The IDT LDS7000 and LDS7001 devices provide native support for 10-bit resolution (1024 x 1024) and the ability to scale X-axis and Y-axis touch values ​​with the flexibility to apply the solution to different resolution LCD and AMOLED panels . In addition, a single-layer solution provides improved backlight transmission while the device's low-power mode extends the battery life of portable devices.