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

A composite function and electronic ink technology, which is applied in optics, nonlinear optics, ink, etc., can solve the problems of irregular surface charge distribution, low contrast of display components, and difficult preparation of microcapsules uniformly, so as to achieve uniform charge and image boundary Clear, good mechanical properties

Inactive Publication Date: 2008-12-31
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The invention patent 200410009206.7 "Preparation method of monodisperse spherical titanium dioxide colloidal particles with controllable size and shape" was used to prepare titanium dioxide spheres with a particle size of 250nm and a relative standard deviation of 9%. The titanium dioxide spheres were used as core electrophoretic particles for further modification. Use tetrachlorethylene as the dispersing solvent, drop byk 161 dispersant with a relative solvent content of 3wt%, ultrasonically oscillate for 20 to 30 minutes, slowly add titanium dioxide balls with a relative solvent content of 20wt% in batches under vigorous stirring, and complete sub-optical wavelength light Preparation and modification of composite functional spheres (electrophoretic particles). Dilute the suspension prepared by the above method with tetrachlorethylene, the content of the electrophoretic particles accounts for 10wt% of the total volume of the suspension, ultrasonically oscillate for 40 m...

Embodiment 2

[0033]The invention patent 99123760.9 "Preparation Method of Composite Monodisperse Uniform Nano Titanium Dioxide Spherical Particles" was used to prepare titanium dioxide spheres with a particle size of 300nm and a relative standard deviation of 7%. The titanium dioxide spheres were used as core electrophoretic particles for further modification. Using tetrachlorethylene as the dispersion solvent, drop byk 110 dispersant with a relative solvent content of 20 wt%, ultrasonically oscillate for 20 to 30 minutes, and slowly add titanium dioxide balls with a relative solvent content of 20 wt% in batches under vigorous stirring. Complete the preparation and modification of sub-optical wavelength lightweight composite functional balls (electrophoretic particles). Dilute the suspension prepared by the above method with tetrachlorethylene, the content of the electrophoretic particles accounts for 1wt% of the total volume of the suspension, the suspension is ultrasonically oscillated fo...

Embodiment 3

[0036] Using the invention patent 200610011885.0 "Preparation method of monodisperse spherical mesoporous titanium dioxide colloidal particles with controllable size and shape" to prepare mesoporous titanium dioxide spheres with a particle size of 400nm and a relative standard deviation of 10%, using this mesoporous titanium dioxide sphere as the core Electrophoretic particles are further modified. Using tetrachlorethylene as the dispersed phase, drop DP-983 dispersant with a relative solvent content of 1 wt%, ultrasonically oscillate for 20-30 minutes, and slowly add mesoporous titanium dioxide balls with a relative solvent content of 22 wt% in batches under vigorous stirring. Complete the preparation and modification of sub-optical wavelength lightweight composite functional balls (electrophoretic particles). The suspension prepared by the above method is diluted with tetrachlorethylene, the content of electrophoretic particles accounts for 20wt% of the total volume of the s...

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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...

Claims

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Application Information

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IPC IPC(8): C09D11/00G02F1/167
Inventor 唐芳琼孟宪伟
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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