Flexible display screen cover plate
A flexible display and display technology, which is applied in nonlinear optics, telephone structure, optics, etc., can solve the problems of coating bending performance influence, surface hardness reduction, insufficient hardness, etc., and achieve the goal of reducing coating warpage Possibility, good bending resistance, and convenience for subsequent processes
Active Publication Date: 2019-12-20
新纶电子材料(常州)有限公司
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Problems solved by technology
In the process of use, it is found that polyimide has the following problems as a substrate. First, its hardness is not enough, it can only reach 7H, but not 9H of glass, and it cannot really replace glass. If the hardness is increased by increasing the thickness of the coating, it will cause Warping or even curling, the subsequent process cannot be carried out; secondly, its thickness is relatively thick, in order to ensure the hardness, the thickness of the polyimide substrate should be 50μm-80μm, and the thickness of the hardened coating should be greater than or equal to 10μm, which is As a result, the thickness of the flexible display screen is relatively thick, and the overall thickness of the obtained device is relatively thick, which has limitations on the overall design of the device. At the same time, the thicker coating will crack after repeated winding, which obviously increases the brittleness of the coating. Now, if the thickness of the coating is thinned, there will be a problem of reduced surface hardness, and how to achieve a balance between the two is the biggest bottleneck of the flexible display cover material; again, in addition to the silicon oxide group, germanium must also be introduced. Oxygen groups to adjust the hardness of the material, and the addition of germanyl groups will affect the bending properties of the coating
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[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0033] In describing the present invention, it is to be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "surrounding" etc. Indicating orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a sp...
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Abstract
The invention discloses a flexible display screen cover plate, and relates to the technical field of optical films. The flexible display screen cover plate of the present invention comprises: a transparent aromatic polyamide substrate; a polysilazane layer provided on one side surface of the transparent aromatic polyamide substrate; and a protective layer provided on one side surface of the polysilazane layer opposite to the transparent aromatic polyamide substrate. The aromatic polyamide is used as the substrate, so that the hardness and the bending resistance of the traditional flexible display screen cover plate are improved.
Description
technical field [0001] The invention belongs to the technical field of optical film display, in particular to a flexible display screen cover. Background technique [0002] The flexible display cover material is mostly composed of a rigid glass substrate or a resin substrate and a functional layer. Among them, the glass display cover cannot be bent, which does not conform to the development trend of foldable display devices. Compared with glass, polyimide material with high surface hardness and high toughness has become the preferred material for flexible display cover, but it needs surface coating. layer to increase hardness. In the process of use, it is found that polyimide has the following problems as a substrate. First, its hardness is not enough, it can only reach 7H, but not 9H of glass, and it cannot really replace glass. If the hardness is increased by increasing the thickness of the coating, it will cause Warping or even curling, the subsequent process cannot be ...
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IPC IPC(8): H04M1/02G06F1/16G09F9/30G02F1/1333
CPCG02F1/133305G06F1/1652G09F9/301H04M1/0268
Inventor 刘章伟龙冲
Owner 新纶电子材料(常州)有限公司
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