Alignment film production method
A production method and technology of alignment film, applied in nonlinear optics, instruments, optics, etc., can solve the problems of inability to achieve a wide viewing angle, fine dust on the alignment layer, uneven alignment, etc., and achieve the effect of the best process yield
Inactive Publication Date: 2016-09-07
CPT TECH GRP +1
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Problems solved by technology
However, such an approach requires rollers to perform rubbing alignment on the surface of the glass substrate. In this way, multi-domain alignment for each pixel (pixel) cannot be performed, so the effect of wide viewing angle cannot be achieved.
Furthermore, the contact method is more likely to generate dust or static electricity on the alignment layer.
In addition, since the rollers are required to align the glass substrate, it is difficult to apply to the production of large-sized panels when the size of the glass substrate gradually increases, and the problem of uneven alignment is more likely to occur.
Method used
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[0024] figure 1 Shown is a schematic flow chart of a method for fabricating an alignment film according to an embodiment of the present invention. Figure 2A to Figure 2E shown as figure 1 A schematic cross-sectional view of the fabrication method of the alignment film. Please also refer to figure 1 and Figure 2A , in this embodiment, an alignment material 110 having an ultraviolet light reactive functional group is formed on a substrate 100 . The material of the alignment material 110 in this embodiment is, for example, a polymer material with photoreactive functional groups, such as polyimide or polyamic acid, and the substrate 100 is, for example, a color filter substrate or an active device array substrate.
[0025] It should be noted that, before forming the alignment material 110 on the substrate 100, the substrate 100 may be cleaned first. In addition to increasing the bondability between the alignment material 110 and the substrate 100, it can also effectively im...
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Abstract
The invention relates to a manufacturing method of an alignment film, comprising the following steps that an alignment material with an ultraviolet ray reaction functional group is formed on a substrate; the alignment material on the substrate is pre-baked; an ultraviolet ray polaroid is provided arranged on the substrate; the pre-baked alignment material is aligned so as to cause irradiate the ultraviolet rays to irradiate on the substrate; the ultraviolet rays penetrates the ultraviolet ray Polaroid polaroid and irradiates to the pre-baked alignment material; and the alignment material which is aligned is baked so as to completely solidify the alignment material. By the manufacturing method disclosed by the invention, uneven alignment and dark-state light leakage can be reduced, a relative good process yield is provided, and an effect of wide viewing angle can be achieved.
Description
technical field [0001] The present invention relates to a manufacturing method of an alignment film, and in particular to a manufacturing method of an optical alignment film. Background technique [0002] A general liquid crystal panel is mainly composed of two substrates and a liquid crystal layer arranged between the two substrates. Regardless of whether it is an active-matrix liquid crystal display or a passive-matrix liquid crystal display, both substrates must have an alignment layer. The main function of the alignment film is to align the liquid crystal molecules so that the liquid crystal molecules appear twisted between the two substrates. Generally speaking, the alignment film can be formed by printing or other methods, wherein the process of forming the alignment film by printing mainly includes two parts: alignment film printing and alignment treatment. In the step of printing the alignment film, polyimide is usually fabricated on the substrate by printing equip...
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IPC IPC(8): G02F1/1337
Inventor 谢佳升傅欣敏吴宏昱连詹田
Owner CPT TECH GRP