From Winstar News of September '24

Advanced VATN LCD with Touch Key Technology: The Perfect Display Solution

In today’s fast-evolving display technology landscape, achieving high performance and user interactivity is paramount. Winstar's latest innovation combines VATN LCD technology with cutting-edge touch key functionality, offering a superior display solution that excels in both visual quality and touch sensitivity.

Unveiling VATN LCD Technology

Vertical Alignment Twisted Nematic (VATN) LCD technology stands out due to its exceptional contrast and wide viewing angles. Unlike traditional TN LCDs, VATN LCDs align their liquid crystal molecules perpendicular to the glass substrate when not energized, resulting in a deep black state. Upon applying voltage, these molecules tilt, allowing light to pass and displaying a crisp white state, ensuring higher contrast ratios compared to TN displays.

Traditional VATN displays often face challenges like gray scale inversion at certain viewing angles due to the birefringence properties of liquid crystals. The improved VATN technology uses a fringe-field effect to create a symmetric and curved electric field. This design allows liquid crystal molecules to tilt in various directions, offering consistent brightness and eliminating gray scale inversion across wide viewing angles.

Features of VATN Full View Products

• High Contrast: Up to 120:1 for sharp and vivid visuals.
• Wide Viewing Angle: Maximum viewing angles of 170° horizontally and 110° vertically.
• Mode: Exclusively in negative display mode for deep black backgrounds.
• Segment Color: Customizable white segments with silk screen printing.
• Duty Requirement: ≤ 1/4 Duty.
• Backlight Colors: Compatible with white, yellow-green, green, red, and blue.

Integrating Touch Key Technology

Building on the robust foundation of VATN LCD, Winstar has integrated advanced touch key technology to enhance user interaction. Traditional STN-LCD products with touch functions often rely on complex structures that integrate a driver module, display and touch panel. This solution simplifies the design by merging the driver module and STN-LCD display into a cohesive two-in-one structure, with touch buttons designed within the visible area. This approach not only streamlines design but also improves touch sensitivity and reduces costs.

Key Features of Touch Key Technology

• Wide Compatibility: Supports TN, STN, FSTN, and VATN LCDs.
• Voltage Range: Operates efficiently between 2.2V and 5.5V.
• Flexible Output: Offers one-to-one direct output pin configuration, with options for high or low active output.
• Cost-Effective: Simple structure reduces manufacturing costs.
• Low Power Consumption: Minimizes energy usage in standby mode.
• Adjustable Sensitivity: External capacitors can fine-tune touch sensitivity.
• Versatile IC Options: Available with multi-touch or single-touch capabilities.
• Auto-Calibration: Automatically adjusts for optimal performance.
• Seamless Integration: Compatible with PCB and pin clamp designs, ideal for large-size STN-LCD modules.

The touch key design features capacitive touch buttons integrated directly within the display area, ensuring that touch sensor pads and display icons are perfectly aligned to prevent interference and maintain sensitivity. This results in a highly responsive and intuitive user interface.

Example Design Concept

• Touch Key Size: Typically around 8-15mm, ensuring high sensitivity without compromising ergonomics.
• Touch Key Distance: Maintains a minimum spacing of 2mm to prevent interference.
• Routing Design: Ensures low impedance and consistent touch signal transmission.

For smaller touch display products, Chip on Glass (COG) technology integrates the driver IC directly onto the display panel, combining display and touch functions into a single, highly efficient module. This enhances performance while reducing the need for additional components, streamlining the design and manufacturing process.

Why Choose WINSTAR's VATN LCD with Touch Key Technology?

Winstar's advanced VATN LCD with integrated touch key technology represents the pinnacle of display innovation. Combining superior visual performance with responsive touch functionality, this display solution meets the highest standards of quality and reliability. It is ideal for a variety of applications, including:

• Industrial Control Panels: High contrast and wide viewing angles for complex monitoring systems.
• Medical Devices: Clear and accurate displays essential for patient monitoring and diagnostic equipment.
• Consumer Electronics: Enhanced user experience in devices such as smart home controls, kitchen appliances, and wearable tech.
• Automotive Displays: Reliable and vibrant displays for dashboards, infotainment systems, and climate controls.
• Public Information Systems: Ensures visibility and touch responsiveness in kiosks, ATMs, and ticketing machines.

Additionally, Winstar's VATN technology supports multi-color and color gradient displays, offering greater design flexibility to meet specific customer requirements.

By leveraging Winstar's VATN LCD and touch key integration, you can develop products that stand out in terms of performance, usability, and durability. Whether designing high-contrast, wide-viewing angle displays or seeking a seamless touch interface, this solution delivers unparalleled performance and value.