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

Abstract

The invention provides an electro-wetting color display device based on the three-primary-color time blending method. The display device comprises three sets of electro-wetting structures of differentprimary colors arranged in parallel or in a stacked mode. Each electro-wetting structure sequentially comprises a first transparent electrode layer, a water layer, an oil film layer, a hydrophobic material layer and a second transparent electrode layer from bottom to top. The three sets of electro-wetting structures share the same substrate arranged above the electro-wetting structures. A capillary channel is arranged in each of the water layer and the oil film layer of each electro-wetting structure, 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. After the upper end of the capillary channel forms a net-shaped or plane-laid display layerabove the substrate, the capillary channel extends into the water layer. The display layers of the three sets of electro-wetting structures are overlapped to form a color display surface. According tothe 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 duration of three primary colors is changed. Furthermore, the color change is realized.

Description

technical field [0001] The present invention relates to a display structure, in particular to an electrowetting color display device based on the time mixing method of three primary colors. 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 , causing the droplet to deform and displace, 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 shrink i...

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

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