Process for preparing electronic ink by using light complex functional ball of optical subwavelength

Abstract

The invention relates to a method for preparing electronic ink from light composite function ball at sub-optical wavelength. Mixing dispersant and organic solvent, oscillating with ultrasonic wave, adding light composite function ball at sub-optical wavelength and blending, thus obtaining light composite function ball suspension at sub-optical wavelength with bistability; then adding background dye and mixing, thus obtaining electrophoretic display liquid, namely the electronic ink; or dispersing the light composite function ball at sub-optical wavelength in organic solvent, oscillating with ultrasonic wave, heating to 105-120 DEG C, adding Tissuemat E gradually and blending, thus obtaining light composite function ball suspension at sub-optical wavelength with bistability; then adding background dye and dispersant and mixing, thus obtaining electrophoretic display liquid, namely the electronic ink. Electronic paper display units made from the electronic ink are of good mechanical property, wear resistance, pressure resistance, impact resistance and quick response, and the images produced have clear boundaries, high contrast grade and high resolution.

Description

technical field [0001] The invention belongs to the field of electronic ink, and in particular relates to a method for preparing electronic ink by using light-weight composite functional balls with sub-optical wavelengths. technical background [0002] Modern display technology has gone through three generations of development. As a new display device, electronic paper has the following advantages compared with modern cathode ray tube displays, liquid crystal displays and thin film electroluminescent flat panel displays: The currently used TFT LCD and STN LCD modules are light and thin. 2. Power saving and energy saving, no background light source is needed, the image can be maintained passively, and the power consumption is only when the picture changes, and the power consumption can be reduced by more than 90% compared with LCD. 3. Good contrast, large viewing angle, easy to read, higher reflectivity than reflective LCD, and better contrast than ordinary newspapers. Some...

AI Technical Summary

Problems solved by technology

For example, microcapsules are difficult to prepare uniformly, the particle size distribution is very wide, and the capsule wall is easy to age and crack, which causes problems such as low contrast and short life of display components.

In addition, the size distribution of the chromogenic electrophoretic particles filled in the microcapsules is also wide and not spherical, so the surface charge distribution is irregular and easy to settle, and the non-spherical movement under the action of an electric field is likely to cause bridges between particles and affect other particles. swimming, so the resolution of the display part is low