PI solution spraying method and spraying device

Abstract

The invention discloses a PI solution spraying method and a spraying device. The spraying method comprises the following steps that to-be-sprayed surfaces provided with columnar lenses of a lens substrate are vertically arranged downwards; and atomized PI solution is sprayed to the to-be-sprayed surfaces. According to the embodiment of the device and method, the lens substrate is inverted, so thatthe to-be-sprayed surfaces provided with the columnar lenses are vertically downward, spray heads are located right below the lens substrate, spraying is carried out in such a mode, the PI solution is uniformly sprayed on the to-be-sprayed surfaces, and the problem that valleys between every two adjacent columnar lenses are prone to PI solution accumulation due to gravity is avoided; and in addition, the PI solution is atomized, the diameter of single-drop particles the PI solution is reduced, the influence of gravity on the single-drop particles of the PI solution is reduced, the fluidity ofthe PI solution is reduced, and then the coating uniformity is improved.

Description

technical field [0001] Embodiments of the present invention relate to spraying technology, and in particular to an alignment liquid spraying method and a spraying device. Background technique [0002] At present, 3D display technology has been deeply applied to all walks of life, and the development prospect of lenticular lens is the most broad. Lenticular lens technology is also known as lenticular lens or micro-cylindrical lens 3D technology, and its biggest advantage is that its brightness will not be affected. The principle of lenticular lens 3D technology is to add a layer of lenticular lens in front of the LCD screen, so that the image plane of the LCD screen is located on the focal plane of the lens. [0003] In order to apply 3D display technology more conveniently, the technology that can switch between 2D and 3D is called switchable 3D technology. , PI) to form an alignment film layer, after rubbing alignment, drop liquid crystals, and use vacuum lamination and o...

AI Technical Summary

Problems solved by technology

figure 1 Schematic diagram of the structure of the PI film layer formed on the substrate for the existing coating method, such as figure 1 As shown, regardless of the method of letterpress transfer printing or Inject, due to the fluidity of the liquid, there is currently a problem of uneven coating, especially after PI coating, due to gravity, there is a gap between adjacent lenticular lenses 11. There will be PI accumulation at the bottom of the valley ( figure 1 12), and the PI at the bottom of the valley will change the structure of the bottom of the lens and scatter the original light path, thus affecting the 3D viewing experience

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