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The light-cured LCD is a new type of light-cured 3D printing technology, which can achieve precise 3D printing using light-cured LCD. The principle of this 3D printing technology is to project images onto the light-cured layer, using blue and purple LEDs to simulate 3D space on the light-cured layer, and then using pre-prepared materials placed on the layer to form 3D shapes on the light-cured layer. The advantages of this 3D printing technology include high accuracy, low topological complexity, fast speed, and the ability to perform a variety of material representations compared to traditional 3D printing technology. The video above demonstrates 3D printing using light-cured LCD technology.
Utilizing the imaging principle of the LCD screen, image signals are provided by computer programs, resulting in selective transparent areas on the LCD screen. Under the illumination of the ultraviolet light source, the ultraviolet light passing through the LCD screen forms the ultraviolet image area, and the liquid resin exposed to the light becomes solid, while the opaque parts of the LCD screen block the ultraviolet light. After each layer is cured, the workbench rises along the Z-axis by a predetermined increment, stacking layer by layer to form the final product.
Interestingly, there are actually two types of LCD technology, and they are different. The dividing line is the wavelength of the light source: one is 405nm ultraviolet, and the other is 400-600nm visible light. LCD masking light curing: uses 405nm ultraviolet light (like DLP), with the LCD panel as a selective light transmission technology, known as LCD masking technology or by many other names in the industry, such as selective digital light processing (mDLP), liquid crystal DLP technology, ultraviolet masking curing, etc.
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