pdp等离子拼接、dlp拼接、lcd液晶拼接的比较（Comparison of PDP plasma splicing, DLP splicing and LCD liquid crystal splicing）.docVIP

pdp等离子拼接、dlp拼接、lcd液晶拼接的比较（Comparison of PDP plasma splicing, DLP splicing and LCD liquid crystal splicing） First, the principle of imaging comparison A) plasma principle PDP (Plasma Display Panel), that is, plasma display screen. PDP is a display technique using gas discharge, which works like a fluorescent lamp. It uses a plasma tube as a light emitting element on the screen, each plasma tube corresponding to a pixel, the screen as a glass substrate, the substrate spaced around the air tightness of the sealing to form a discharge space, the discharge space filled with neon, xenon and other mixed inert gas as working medium inside the two block the surface of the glass substrate coated with metal oxide conductive film as the excitation electrode. When a voltage is added to the electrode, a plasma discharge occurs in the mixed gas in the discharge space, also known as a plasma effect. Gas discharge produced plasma ultraviolet, UV excitation fluorescent screen coated with red green and blue phosphors, visible light emitting phosphor screen, showing images. When each color unit achieves 256 levels of gray scale, and then mixes the color, then realizes the color display. The technical principle, due to uniform distribution in plane luminous plasma tube PDP, this display images of the center and the edge is completely consistent, do not appear distorted, realize the true sense of the pure plane without any image distortion. Because there is no electron beam movement in the display process, it is not necessary to use electromagnetic field, so the external electromagnetic field will not disturb it, so it has better environmental adaptability. PDP is a self luminous display technique that does not require a background light source and therefore has no visual angle and brightness uniformity. The design of the same plasma tube shared by the tri color phosphor also avoids the focusing and convergence problems, enabling very clear images. Plasma high voltage, high power consump