Question

What are VA and FFS? What is the difference?

Answer 1

Definition of VA and FFS

VA (Vertical Alignment):

VA is a liquid crystal display technology, the full name is vertical alignment liquid crystal display technology. In VA technology, liquid crystal molecules are arranged vertically or tilted under the action of an electric field. This arrangement makes VA screens have advantages in contrast, black level performance and color depth. VA screens are usually able to present deeper blacks and higher contrast, while the colors are also richer and more accurate. However, the viewing angle of VA screens is relatively narrow, and color distortion and brightness reduction may occur when viewed from the side.

FFS (Fringe Field Switching):

FFS, the full name is fringe field switching technology, which is a wide-viewing angle technology developed by the liquid crystal industry to solve large-size, high-definition desktop monitors and LCD TV applications. FFS technology uses boundary electric fields to rotate liquid crystal molecules inside the electrode surface layer to display images. Similar to IPS technology, FFS technology can also provide a wider viewing angle range and higher color accuracy. In addition, FFS technology also has the advantages of high penetration, low power consumption and high brightness, which makes it occupy a place in the high-end display and TV market.

Differences between VA and FFS

1. Liquid crystal molecule arrangement:

- In VA technology, liquid crystal molecules are arranged vertically or tilted under the action of an electric field.

- FFS technology uses boundary electric fields to rotate liquid crystal molecules inside the electrode surface.

2. Viewing angle range:

- The viewing angle of VA screens is relatively narrow, and color distortion and brightness reduction may occur when viewed from the side.

- FFS technology provides a wider viewing angle range, allowing users to obtain clear and realistic display effects at different angles.

3. Contrast and black level performance:

- VA screens have advantages in contrast, black level performance and color depth, and can present deeper blacks and higher contrast.

- Although FFS technology can also provide higher contrast, it may be slightly inferior to VA technology.

4. Color accuracy:

- Both VA and FFS technologies can provide relatively accurate color performance, but the specific effect may vary depending on the product model and manufacturing process.

5. Application fields:

- VA screens are widely used in places that require high-quality image display, such as professional design, film and television production, etc., due to their high contrast and color accuracy.

- FFS technology occupies a certain share in the high-end display and TV market due to its wide viewing angle and high penetration rate.

In summary, VA and FFS are two different liquid crystal display technologies, which have significant differences in liquid crystal molecular arrangement, viewing angle range, contrast and black level performance, and application fields. Users should make comprehensive considerations based on their needs and budget when making a choice.

Answer 2

VA crystal molecular arrangement refers to the molecular arrangement of compounds or single substances belonging to the VA group (fifth main group) when forming crystals in crystallography.

VA group elements include nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb) and bismuth (Bi).

When these elements form crystals, their molecules or atoms will be arranged according to specific chemical bonds and crystal structure rules to form a stable crystal structure.

The specific form of VA crystal molecular arrangement depends on the type of element, temperature, pressure and the way it combines with other elements, which may include layered structure, chain structure or more complex spatial network structure.

This arrangement has an important influence on the physical properties, chemical properties and application performance of the crystal.

Answer 3

VA liquid crystal molecular arrangement refers to the arrangement of liquid crystal molecules in a direction perpendicular to the glass substrate in the liquid crystal display.

In the VA (Vertical Alignment) display mode, the liquid crystal molecules are in a vertical state when there is no external voltage, making it almost impossible for the backlight to penetrate, thus presenting a black state with extremely high contrast.

When voltage is applied, the liquid crystal molecules will be tilted in the direction of the electric field, allowing light to pass through, thereby displaying an image.

The characteristics of VA liquid crystal molecular arrangement enable it to have excellent performance such as high contrast and low light leakage, and it is an important mode in liquid crystal display technology.

Answer 4

FFS (Fringe Field Switching) liquid crystal molecule arrangement is a special liquid crystal display technology. Its core lies in the fact that the liquid crystal molecules rotate inside the electrode surface through the action of the boundary electric field, thereby achieving excellent display effects.

Specifically, the characteristics of liquid crystal molecule arrangement of FFS technology are as follows:

1. Homogeneous arrangement: In the initial state, the liquid crystal molecules are almost homogeneously arranged in the liquid crystal box, forming a specific initial arrangement.

2. Electric field effect: When voltage is applied, the boundary electric field causes the liquid crystal molecules to rotate inside the electrode surface. This rotation method is different from the traditional IPS (In Plane Switching) technology and can produce a higher penetration effect.

3. Pixel structure: The pixel electrode part of the FFS technology adopts a wedge-shaped design, so that the liquid crystal molecules in the same pixel can rotate in the clockwise and counterclockwise directions, thereby improving the problem of chromaticity coordinate movement when the viewing angle changes.

In summary, FFS liquid crystal molecule arrangement achieves high penetration, large viewing angle and excellent display effects through unique electric field action and pixel structure design, and has become one of the important development directions of current liquid crystal display technology.

Answer 5

VA (Vertical Alignment) and FFS (Fringe Field Switching) are two different LCD technologies.

1. VA (Vertical Alignment) Technology:
- Features: Liquid crystal molecules can be arranged vertically under the action of an electric field, so they can provide a wider viewing angle and higher contrast. However, the response time of VA-type LCDs is relatively slow, and improvements are needed to improve their performance.
- Application: VA technology is widely used in large-size desktop LCDs, especially entry-level models and entry-level gaming monitors. At the same time, some high-end brands are also considering using VA technology panels in the field of high-end gaming monitors.

2. FFS (Fringe Field Switching) Technology:
- Features: It has the characteristics of high light transmittance and low reflection. Through a special design structure, the generation of an electric field is used to achieve the rotation of liquid crystal molecules and the adjustment of light transmittance. FFS-type LCDs have better visual performance outdoors and in high-brightness environments.
- Application: FFS technology is widely used in mobile devices, head-mounted displays and other fields, and has become a mainstream technology in mainstream markets such as mobile phones, tablets, and laptops. Its fast response time and wide viewing angle make FFS excel in areas such as dynamic image display and gaming.

In general, VA and FFS technologies each have their own characteristics and advantages, suitable for different application scenarios and needs.