VA-type LCD panels are widely used in monitors, with 16.7 million colors and wide viewing angles being their most notable features. VA-type panels are divided into MVA and PVA types. MVA uses multi-quadrant vertical alignment technology, utilizing protrusions to deflect liquid crystal molecules at a specific angle, shortening display time, achieving viewing angles of over 160 degrees, and response times as short as 20ms. PVA, introduced by Samsung, directly changes the liquid crystal cell structure, resulting in superior brightness output and contrast compared to MVA, with viewing angles reaching 170 degrees, response times under 20ms, and contrast ratios exceeding 700:1. Based on PVA, two improved panels, S-PVA and P-MVA, have been developed, representing even more advanced technology.
IPS-type LCD panels offer advantages such as wide viewing angles and delicate colors, appearing clear and transparent, which is one way to identify an IPS panel. S-IPS is the second-generation IPS technology, improving grayscale inversion. Brands such as LG and Philips offer IPS technology panels.
TN-type panels are used in entry-level and mid-range products, offering affordable pricing. Compared to VA and IPS, TN panels are slightly inferior in technical performance, only achieving 16.2 million colors. Response time is easier to improve, viewing angles are limited to within 160 degrees, and response times are generally within 8ms.
WLED is a backlight technology, not a panel type. WLED uses white light-emitting diodes (LED backlighting). Compared to cold cathode fluorescent lamp (CCFL) backlighting, LED backlighting technology can reduce power consumption by 65% and offers significant advantages. LED-backlit products are already widely available on the market, and monitors using LED backlighting are beginning to replace CCFL-backlit products.
