Polymeric membrane containing no cholesteric liquid crystal, polymeric membrane and reflecting type display module
A cholesteric liquid crystal, reflective display technology, applied in the directions of mirrors, optics, instruments, etc., can solve the problems of increasing manufacturing costs, difficult practical application, etc., and achieve the effects of reducing product costs, light and thin costs, and cost reductions
Inactive Publication Date: 2014-12-03
NAT CHENG KUNG UNIV
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Problems solved by technology
However, due to the high cost of cholesteric liquid crystals, the manufacturing cost is greatly increased; therefore, it is still difficult to be widely used in practical applications.
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[0059] A polymer film without cholesteric liquid crystal, a polymer film and a reflective display module according to preferred embodiments of the present invention will be described below with reference to related drawings, wherein the same components will be described with the same component symbols.
[0060] Please refer to Figure 4 As shown, a polymer film 2 in a preferred embodiment of the present invention has a photonic crystal structure. The photonic crystal structure is, for example, a cholesteric liquid crystal structure, so that the polymer film 2 has Bragg reflection characteristics. The cholesteric liquid crystal structure can be formed by imprinting cholesteric liquid crystals or by imprinting achiral liquid crystals (achiral LC) mixed with optically active additives (chiraldopants). Since the product does not contain expensive cholesteric liquid crystals, the cost can be greatly reduced.
[0061] Please refer to Figure 5 As shown, another polymer membrane 2...
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Abstract
The invention discloses a polymeric membrane containing no cholesteric liquid crystal, which is characterized by having a photonic crystal structure. The invention provides the polymeric membrane containing no cholesteric liquid crystal which has a photonic crystal structure and is an innovative product. The invention further discloses that the polymeric membrane can comprise a fluid which is filled in a membrane material of the polymeric membrane. By means of various different fluids, the polymeric membrane can produce reflecting light of different wavelengths through bragg reflection and thus is expanded in applicability. When the fluid is an anisotropic fluid, the polymeric membrane can also be applied to an electric-field-controlled reflecting type display module. In addition, the invention discloses a polymeric membrane replicated through stacking levorotation and dextrorotation liquid crystals, and the brightness of the reflected light can be enhanced.
Description
technical field [0001] The invention relates to an optical crystal polymer film, in particular to a polymer film without cholesterol liquid crystal, a polymer film and a reflective display module. Background technique [0002] With the development of Flat Panel Display (FPD) technology, and because of its superior features such as light and thin body, low power consumption and no radiation, it has gradually replaced the traditional Cathode Ray Tube (CRT) Display device, and applied to various electronic products. Among them, cholesteric liquid crystal (Cholesteric Liquid Crystal) is also used in display technology, especially in bistable displays, such as electronic paper. [0003] figure 1 is a schematic diagram of the molecular arrangement of the cholesteric liquid crystal 11 . Cholesteric liquid crystals basically have asymmetric carbon atoms (chiral centers), which can be chiral cholesteric liquid crystals, or non-chiral liquid crystals added with chiral compounds. T...
Claims
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IPC IPC(8): G02B5/08G02F1/1335C08L101/12
Inventor 刘瑞祥
Owner NAT CHENG KUNG UNIV