Monochrome Liquid Crystal Display (LCD) is one of LCD display technology that can only display a single color. Different from colorful TFT display,  This type of monochrome LCD display typically presents background/image variations of only one color, such as white, green, red, etc. Its structure is illustrated in the figure below:

Based on the different monochrome LCD technologies, they can be classified into three main categories: TN (including HTN), STN (including FSTN, DFSTN), and VATN LCD.

TN( Twisted Nematic) technology, whose liquid crystal molecules are typically twisted at a 90° angle inside LCD cell.

STN( Super Twisted Nematic) technolgy, features a larger twisting angle typically reaching 240°, compared to TN technology .

VATN technology, differs from the conventional TN/STN liquid crystal technologies in terms of twisted orientation and crossed polarizers. VATN LCD employs a vertically aligned liquid crystal molecule structure, where the liquid crystal molecules are perpendicular to the electrodes on the LCD substrate. In power off state, the arrangement of VATN liquid crystal molecules is perpendicular to the glass substrate, unlike conventional TN/STN LCDs. This alignment blocks light from passing through the polarizers, resulting in a deep black color. However, when a voltage is applied on both sides, the liquid crystal molecules begin to tilt and collapse, allowing the previously blocked light to penetrate the polarizers, exhibiting a pure white color. This significant enhancement in contrast ratio makes VATN technology visually superior to TN technology.

Features of VATN LCD Technology：

• Advanced Visual Effect: a pure black background for enhanced product elegance.
• High Contrast: Ultra-high contrast ratio reaching up to 500 or even 1200:1
• Ultra-Wide Viewing Angle: Wider viewing angles compared to TN and STN technologies, and full-view VA up to 180°
• Wide Operating Temperature: with operating temperatures range -30 to 85℃, feasible for automotive applications.

VATN LCD with Color

1.VA LCD with color backlight

The most classic visual effect of VA LCD is white text-on pure black background, with the highest contrast. While the backlight of VA LCD is not limited to white. It can also be paired with backlights of other colors, such as red, green, and blue, to create different visual effects. By changing the color of the backlight, VA LCD module could present a richer and more unique color representation, meeting the needs of different application scenarios.

2.VA LCD with color filter or color printing

VA LCD can be also added with color silkscreen printing or color filter technology to enrich the color palette of the fixed displayed content, for example icon, buttons,. This application not only enhances the attractiveness and visual impact of the display but also satisfies user demands for colorful and vivid content.

Application Fields:

With its high contrast ratio and wide viewing angles, VA LCD has become the popular LCD technology solution in the monochrome display market. It is widely used in various consumer electronics, white goods, smart homes, industrial equipment, and automotive products.