Electro-wetting color display device based on three-primary-color space blending method

Abstract

The invention provides an electro-wetting color display device based on the three-primary-color space blending method. The display device comprises three sets of parallel electro-wetting structures ofdifferent primary colors. Each electro-wetting structure comprises a first transparent electrode layer, a water layer, an oil film layer, a hydrophobic material layer, a second transparent electrodelayer and a substrate, wherein the first transparent electrode layer, the water layer, the oil film layer, the hydrophobic material layer, the second transparent electrode layer and the substrate aresequentially arranged from bottom to top. A capillary channel is arranged in each of the water layer and the oil film layer, wherein the lower end of the capillary channel extends into the oil film layer, and the upper end of the capillary channel penetrates through the second transparent electrode layer and the substrate to extend to the water layer after passing over the substrate. When the voltage applied to the first transparent electrode layer and the second transparent electrode layer is changed, the lower end of the capillary channel is always kept in the material of the oil film layer.According to the invention, the capillary channel is applied. Under the action of the hydrophilic force, the color display of the transparent pipeline on the outer side of each electro-wetting structure is controlled. As a result, during the continuous fluctuation of the control voltage of a control device, the occupied range of three primary colors is changed. Furthermore, the color change is realized.

Description

technical field [0001] The invention relates to a display structure, in particular to an electrowetting color display device based on a three-primary color space mixing method. Background technique [0002] EFD can also be called electrowetting (electrowetting) display (Electrowetting display), electrowetting refers to changing the wettability of the droplet on the substrate by changing the voltage between the droplet and the insulating substrate, that is, changing the contact angle , the phenomenon of deformation and displacement of the droplet, such as figure 1 shown. The so-called wetting refers to the process in which one fluid on a solid surface is replaced by another fluid. The liquid can spread on the solid surface, and the solid-liquid contact surface tends to expand, that is, the adhesion force of the liquid to the solid surface is greater than its cohesive force, which is wetting. The liquid cannot spread on the solid surface, and the contact surface tends to sh...

AI Technical Summary

Problems solved by technology

[0005] There is a problem of contact angle saturation in electrowetting (when the voltage exceeds a certain value, the wettability no longer increases with the increase of voltage), therefore, it limits the working performance and industrial development of many devices

Images