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DISPLAY TECHNOLOGIES Fig. 4: AUO’s silicon (a-Si) TFT LCDs come with a 1mm border. AUO described it as the narrowest border achieved by using a-Si technology. LTPS rules in resolution and slim border AUO also showcased a 5.5-inch WQHD panel (1,440 x 2,560) for smartphone displays created by using a Low Temperature Polycrystalline Silicon (LTPS) process. It has raised the pixel density to 538 PPI. The new display also features a border as narrow as 0.7 mm – see figure 5. In-cell touch is the way of the future? Integrating display and touch sensor into one module seems to be the way of the future. AUO’s 5.5-inch AMOLED panel (403ppi) is using an in-cell touch panel, while employing Low Temperature Polycrystalline Silicon (LTPS) process production. Its bottom line? Panel thickness is less than 0.45 mm – see figure 6. The in-cell touch technology enables thinner and light panels, while it achieves better anti-glare performance, according to AUO. Fig. 5: AUO’s 5.5-inch WQHD panel (1,440 x 2,560) for smartphone displays using a Low Temperature Polycrystalline Silicon. Oxide TFT panels are also reaching smartphones AUO also showed off a 5.5-inch full HD panel (1080 x 1920) based on oxide TFT technology. Featuring 403 ppi pixel density, 500cd/m2 brightness and 1000:1 contrast ratio, its claim to fame is low power consumption enabled by low refresh rate design (1Hz). Fig. 6: AUO’s 5.5-inch AMOLED panel (403ppi) using an in-cell touch panel is less than 0.45 mm thick. Intelligent touch displays with high-level command set Displays company demmel products has added intelligent touch displays in 4.3-, 5.7- and 7in. formats, all equipped with the fast DPC3090 controller and 128 MByte of flash memory. With the DPC3090 processor, execution times and transmission rates increase by over 50% as compared to the earlier panels. All graphics, animations, fonts, text modules and macros used to design the display can be stored on the 128 MByte flash memory, a 4x upgrade. The integrated iLCD controller includes more than 250 high-level commands to control the iLCDs via Ethernet, USB, RS232, I²C or SPI interfaces. Even complex screen designs can be achieved quickly with software functionalities such as formatting text output, drawing static and animated graphics, filling areas with predefined colour gradients or tiles, changing the transparency on arbitrary display areas or touch screen control. These built-in features make it possible to create screen designs for any application requirement. With the free Windowsbased Integrated Development Environment (IDE) iLCD Manager XE, and with features such as Parameter Completion and Syntax Checking/Highlighting, no programming skills are required to design state of the art graphical interfaces. Sample and demo projects encourage hands-on access to the powerful command set and can be customised and adopted for any user application. demmel products GmbH www.demmel.com 7“ industrial ARM panel PC with LED backlight The 7” industrial panel PC offered in widescreen format by Data Modul is based the company’s eDM-CB-Colibri ARM carrier board. The flexible board design allows the integration of scalable Toradex Colibri modules with various performance classes from ARM Freescale Vybrid Cortex-A5 at 400MHz to ARM Cortex-A9 Quad Core 1.4GHz. Optionally, versions with resistive or projective capacitive touch screen can be offered. Both technologies guarantee high functional accuracy when operating with fingers and gloves. The simple open frame design facilitates the integration in existing and new installations. Data Modul AG www.data-modul.com 24 Electronic Engineering Times Europe October 2014 www.electronics-eetimes.com


EETE OCT 2014
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