A flexible electrowetting display device

Abstract

The invention discloses a flexible electric moisturizing display device. The device comprises an upper substrate, a lower substrate and N fluid cavities separated by cavity walls. Polar conducting liquid and non-polar oil liquid which are not immiscible are filled in each fluid cavity, the upper substrate and the lower substrate are made of flexible materials, one side, close to the fluid cavities, of the upper substrate is provided with a drainage medium layer, and a super-hydrophobic area, a hydrophilic area or a super-hydrophilic area is arranged on each fluid cavity and corresponds to the lower substrate. The difference of the moisture properties of the surface of the super-hydrophobic area, the hydrophilic area or the super-hydrophilic area is utilized, due to the fact that the hydrophilic area or the super-hydrophilic area has strong adhesion force on the polar conducting liquid, locating of the polar conducting liquid can be kept in the deformation process of the substrate, under the condition without aid of a solid part, relevant positions of the polar conducting liquid and the non-polar conducting liquid are stably controlled, and a flexible electric moisturizing display function is achieved.

Description

technical field [0001] The invention relates to an electrowetting display device, in particular to a flexible electrowetting display device. Background technique [0002] Electrowetting technology is a new type of microfluidic technology that has been widely used and researched in recent years. It has the characteristics of low power consumption, fast response speed, simple device structure, and small size. The new display based on electrowetting technology also has the advantage of wide viewing angle, which has excellent application value. The current mainstream electrowetting display structure includes a hydrophobic insulating layer, a transparent electrode, and a fluid cavity. The fluid cavity contains a polar conductive liquid and a non-polar oily liquid, and these two liquids must meet other requirements, such as: low melting point; suitable viscosity; good electrowetting properties, especially immiscibility and as close as possible to the density. Adjacent fluid cha...

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Problems solved by technology

However, the various display device models based on electrowetting proposed so far only have static performance. When the device is in mechanical shaking, especially when the parts are deformed, there is no mechanical mechanism to limit the relative position of the liquid in the fluid cavity. Components, the fluidity of the liquid will cause the relative displacement of the two liquids, which affects the real-time display effect and limits the application of electrowetting technology in fields such as bendable and wearable flexible displays

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