Transmission type liquid crystal display device and diffuser
A liquid crystal display device, transmissive technology, applied in the direction of light guide, optics, optical elements, etc., can solve the problems that have not been solved, and achieve the effect of suppressing the reduction of contrast
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Embodiment 1
[0128]
[0129] Made with the method shown below figure 1 A single light diffusing layer is shown.
[0130] Add triacetyl cellulose to dichloromethane, dissolve it, and stir evenly to prepare a polymer solution. This solution was applied on a stainless steel substrate with a smooth surface, and the solvent was evaporated to form a transparent protective layer with a thickness of about 50 μm.
[0131] On the other hand, polymethyl methacrylate, red, blue, and yellow organic pigments were added to methylene chloride, and alumina fine particles (average particle diameter: 1.1 μm) were added and stirred uniformly to prepare a dispersion.
[0132] In addition, red, blue, and yellow organic dyes were added at concentrations (mass %) in the following Table 2 with respect to the polymethyl methacrylate. Furthermore, 10 parts by mass of alumina fine particles were added to 100 parts by mass of polymethyl methacrylate.
[0133] The concentration of dichloromethane is appropriately...
Embodiment 2
[0164]
[0165] Made with the method shown below Figure 4 The single-layer light-diffusing layers 21-24 are shown.
[0166] First, it carried out similarly to Example 1, and prepared the transparent protective layer.
[0167] On the other hand, the same polymethyl methacrylate as in Example 1, red, blue and yellow organic pigments were added to methylene chloride, and melamine-formaldehyde condensate fine particles (average particle diameter: 1.3 μm) were added and stirred. After uniformity, a dispersion is prepared.
[0168] In addition, red, blue, and yellow organic dyes were added at the concentrations (mass %) of Table 4 below with respect to the polymethyl methacrylate. Furthermore, 5 parts by mass of melamine-formaldehyde condensate fine particles were added to 100 parts by mass of polymethyl methacrylate.
[0169] The concentration of dichloromethane is appropriately adjusted so that the above-mentioned dispersion liquid can obtain a light-diffusing layer with a tar...
Embodiment 3
[0191] Made with the method shown below Figure 5 The laminated light-diffusing layer shown is a light-diffusing layer in which a colored layer 18 is laminated on the outside (viewer's side) of a scattering layer 16 formed by adding a scattering substance to a light-transmitting polymer. Yes, the colored layer 18 is formed by adding a colorant to a light-transmitting polymer. Triacetyl cellulose was selected as the light-transmitting polymer.
[0192]
[0193] First, triacetyl cellulose was dissolved in methylene chloride, and alumina fine particles (average particle diameter: 1.1 μm) were further added and stirred uniformly to prepare Dispersion-1. 10 parts by mass of alumina fine particles were added to 100 parts by mass of triacetylcellulose. The concentration of dichloromethane was adjusted appropriately so that the dispersion liquid-1 could obtain the target film thickness and be easy to coat.
[0194] On the other hand, triacetyl cellulose and red, blue, and yellow ...
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Abstract
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