Seamless LCD video walls mainly fall into two categories:
I. Electronic Seamless Video Wall
Principle: The frame of the LCD video wall is directly removed. A light-emitting material smaller than 1.5mm (P) is added to the seam. This light-emitting device consists of two rows of LEDs directly connected to the PCB circuitry. A chip added to the side of the video wall controls the LED device to emit light, restoring the image obscured by the black frame.
Features: Truly achieves 0mm gap, directly eliminating the black frame while still displaying the image.
Pixel uniformity is over 95%, resulting in excellent display quality.
II. Optical Seamless Video Wall
Principle: An optical glass layer is covered on the surface of the LCD screen. The four corners of the glass are beveled. When displaying an image, light refracts through the glass, weakening and hiding the black border of the video wall, thus achieving a seamless display effect.
Features: Utilizes optical glass; as long as there is light and the screen is lit, a seamless display effect will be achieved.
The refraction of optical glass weakens only the 0.1mm physical seam, which is negligible even without seamless conversion. Compared to DLP splicing screens, which have a 0.2mm seam and suffer from obvious defects such as unclear image, fogging, low clarity, and low brightness, optical seamless splicing screens are more advantageous in indoor LCD splicing applications.
