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Optrex introduces factory-integrated 4-wire resistive touch screens to their standard TFT displays

Bob Waddell — Fri, 20 Feb 2009 19:38:47 +0000

As a total solution display provider, Optrex is addressing the need for touch screen solutions that many customers require. Optrex is introducing factory-integrated 4-wire resistive touch screens to many of their standard TFT displays. 4-wire resistive touch is the most cost-effective solution for general applications. The standard touch screens feature:

High reliability and durability
High accuracy
Multiple input modes such as finger or stylus
High transmittance (>80%)
Wide operating temperature range
Factory warranty (reduce contamination, failure rate, etc.)

Touch models are currently available for the following TFT sizes: 3.5”, 5.0”, 5.7”, 6.5”, 10.4”, and 12.1”.

For higher volume OEM customers with custom touch screen requirements, such as custom tail design, 5-wire resistive touch screens, or other special requests, please contact your Avnet representative.

For more detailed information, please check the Optrex website:

http://www.optrex.com/products/groupdetail.asp?tag=touch

Posted By Bob Waddell

EMI Shielding and Touch Screens

Vignesh Sanmugam — Fri, 13 Feb 2009 19:59:23 +0000

Flat Panel Displays find their way into almost every industry and all possible applications. As designers leap to take advantage of this technology and design them into products that range from iPods to Mega Digital Signage screens, it becomes inevitable that the off the shelf (OTS) LCDs require modifications. Modifications for sun light view ability, vandal shield, ruggedization etc. One such modification is the need for shield from Electromagnetic Interference. It is important to understand that the need for EMI shielding is not due to the LCD but due to the components in the overall product incorporating the Display emitting radiation. Hence, the need for shielding which can be integrated to the Display.

As the demand for Displays rise, so is the need for Touch Screens that are integrated with the Display for ease of user interface. Display integrated with Touch enables the designer the flexibility of using the integrated unit to have the ability to also shield from EMI. Further, more and more applications demand the need for sunlight readable Display systems. In cases where such systems also incorporate Touch Screens, it becomes the designer’s delight as the Touch Screen can potentailly be used to achieve both optical enhancements and EMI shielding.

Please read attachment for detailed discussion.

emi-article

Posted By Vignesh Sanmugam

Sharp 15.0” LQ150X1LG82: Features Long-Life LED Backlight

Steve Gereb — Mon, 15 Dec 2008 02:29:39 +0000

Original Post by Steve Gereb, Dec. 10, 2008

The LQ150X1LG82 15.0″ XGA-resolution TFT module is the latest 15.0” industrial display from Sharp featuring an LED backlight. There are very few industrial 15.0” display’s with LED backlighting today; however, theLQ150X1LG82 makes an ideal candidate for industrial designs in cold environments. Rated at 50,000 hours MTBF, the LED backlight provides extended reliability and life when used in cold environments versus a CCFL counterpart. Moreover, LED backlight provides “instant on” functionality in cold temperatures as well. This panel also features a high-speed operation of 8ms and high-contrast of 500:1.

For more information on this TFT module, check out these documents:

lq150×1lg82_pa