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A 3D printing system

A 3D printing and light source technology, applied in the field of 3D printing technology, can solve problems such as low transmittance, heating of liquid crystal panels, and low optical transmittance

Active Publication Date: 2022-03-11
TIANMA MICRO ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the traditional liquid crystal panel is used as the mask for 3D printing, the optical transmittance of the backlight used in 3D printing under the traditional liquid crystal panel is relatively low. Design, generally at 330nm-370nm, when used for 3D printing, when the backlight wavelength is 405nm, the transmittance is about 0.8%-1%, resulting in high power consumption for 3D printing
In addition, the low transmittance of near-ultraviolet light under the traditional LCD panel will also cause the LCD panel to heat up and reduce the life of the LCD panel

Method used

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0025] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. It should be noted that the orientation words such as "up", "down", "left", and "right" described in the embodiments of the present invention are described from the angles shown in the drawings, and should not be interpreted as a reference to the implementation of the present invention. Example limitations. Also in this context, it also nee...

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Abstract

The embodiment of the present invention discloses a 3D printing system, the 3D printing system includes: a light source, the wavelength range of the light source is 365nm-420nm; a resin tank, located at the light output side of the light source, used to store liquid photosensitive resin; a liquid crystal panel, located at the light source Between the resin tank, the liquid crystal panel includes a first substrate and a second substrate oppositely arranged, and a liquid crystal layer located between the first substrate and the second substrate; the retardation of the liquid crystal layer to incident light is greater than or equal to 250nm, less than or equal to It is equal to 320nm; wherein, the retardation is the product of the birefringence difference of the liquid crystal in the liquid crystal layer and the thickness of the liquid crystal layer. The technical solution of the embodiment of the present invention can increase the transmittance of the liquid crystal panel to the 3D printing backlight, reduce the power of the light source, reduce the temperature of the liquid crystal panel, and increase the life of the liquid crystal panel.

Description

technical field [0001] Embodiments of the present invention relate to 3D printing technology, and in particular to a 3D printing system. Background technique [0002] Rapid prototyping (that is, 3D printing) technology is a technology that manufactures entities in a layer-by-layer manner through forming equipment based on the three-dimensional model data of the object. It can realize the simplified production of any complex structural parts and overcome the inability of traditional mechanical processing Barriers for making special structures. Existing 3D printing technologies mainly include fused deposition modeling (FDM), selective laser sintering (SLS), stereolithography (SLA), and digital light processing (DLP). [0003] For the stereolithography (SLA) technology based on the liquid crystal panel, the existing basic implementation method is: use the direct type 385nm / 405nm / 420nm near ultraviolet dot matrix LED light source as the backlight source, and use the liquid crys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/20B29C64/124B33Y30/00
CPCB29C64/20B29C64/124B33Y30/00
Inventor 韩甲伟王臣陈湃杰陈杰任庆玲秦锋
Owner TIANMA MICRO ELECTRONICS CO LTD