2013年7月11日星期四

Backlight diffusion network design

Backlight unit is a notebook of the most power-hungry device, thereby increasing the backlight unit of the light use efficiency has become an important issue. Although the end edge of the incident light rays approach has excellent convergence characteristics, but basically the backlight unit is transparent element, that is a white fine structure (hereinafter referred to as dot pattern or a light scattering body) and the interference pattern produced by the liquid crystal cell With more and more obvious large-scale LCD monitor has almost reached the degree can not be ignored. Although tiny structures obtained through optimal design suitable shape, but how effectively the whole arrangement of tiny structure is the most difficult problem the designer, so then to introduce the theory of irregular dot pattern design (less known outlets generation method).
The current status of network generation methodOLED modules
Avoid liquid crystal cell of the data line, gate line two regularity pattern interferes with the light guide plate of the network, in theory, the most effective way is to make the dot pattern for irregular arrangement, but in fact, if the cause irregular arrangement of overlapping networks, the The site will become bright spots or dark spots, in addition to the filling rate of distribution outlets pattern if there is non-uniformity occurs when uneven brightness on the visual phenomenon, in other words the ideal dot pattern must have the following three conditions:
① dot pattern was highly irregular arrangement, would cause the liquid crystal cell and between the liquid crystal cell does not produce moiré fringes.
② dot pattern irregular arrangement, the naked eye will not recognize the uneven brightness.
③ high degree of correspondence with any continuity to meet the filling rate distribution.Coding System lcd module

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