Displaying method for color electrophoretic displaying device based on photo crystal concept and display device
A technology of color electrophoresis and display method, which is applied in the direction of instruments, optics, nonlinear optics, etc., to achieve the effect of low energy consumption and high reflection
Inactive Publication Date: 2006-06-14
TSINGHUA UNIV
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Most of the currently researched microcapsule electrophoretic displays can only display two colors (usually black and white), so it is of great application value to study high-efficiency and low-cost color electrophoretic displays.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0029] Firstly, microcapsules whose walls are urea-formaldehyde polymers were synthesized by in-situ polymerization, and microcapsules with a median size of 20-60 μm were screened out. These microcapsules contained a large number of particles with a particle size of 370 μm. ±10nm polystyrene microspheres and water. Then these microcapsules with a particle size of 20-60 μm are coated between two electrode panels. One of the two electrodes is glass containing a patterned transparent indium tin oxide (ITO) conductive film, and the distance between the two electrode panels is microspheres. 1.5-2 times the diameter. The lead wire is used to apply voltage between the two electrode panels, and the microspheres are arranged in different ways by applying different voltages to different pixel units, thereby obtaining different reflected light. For example, in this embodiment, when the voltage applied to the pixel unit is 2V, the reflected light obtained in the direction perpendicular t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
| particle diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a display method and a display for a color electrophoretic display based on the concept of photonic crystals, belonging to the technical field of electrophoretic displays. It is characterized in that an external electric field is applied to the microspheres coated in the microcapsules between two parallel electrode panels. Under the action of the external electric field, the microspheres move directionally and arrange in an orderly manner under the action of the electric field due to their own charge. , so that the color display can be obtained by completely reflecting the light whose wavelength matches it. Because the present invention adjusts the arrangement state of the microspheres, that is, the ordered structural period of the photonic crystal, by changing the applied electric field, that is, the voltage, so as to generate different reflected lights and achieve the purpose of color display. The color electrophoretic display provided by the invention has the characteristics of low energy consumption, high reflection, wide viewing angle, etc., is especially suitable for making a display used under sunlight conditions, and has important application value.
Description
technical field [0001] The invention relates to a display method and a display for a color electrophoretic display based on the concept of photonic crystals, belonging to the technical field of electrophoretic displays. Background technique [0002] Since the electrophoretic display has performance advantages such as low energy consumption, high reflection, and wide viewing angle, extensive research has been done on this technology. However, in the initial research work, the electrophoretic display could not work stably due to particle agglomeration and migration, so it has not been commercially applied. In 1997, B.Comiskey et al. of E-INK Corporation of the United States proposed the method of constructing electrophoretic display (also known as electronic paper) with microcapsules. This method successfully solved the problem of particle agglomeration and migration, thus making electrophoretic display effective possibility of commercial application. Most of the currently r...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/167
Inventor 周济沈建红李勃蔡敏敏
Owner TSINGHUA UNIV