An electrowetting device

Abstract

The invention discloses an electrowetting device, comprising an upper substrate, a lower substrate and a packaging plastic frame, the upper substrate includes an upper light-transmitting substrate, and the upper light-transmitting substrate and the lower substrate are sealed and closed by the packaging plastic frame to form a cavity It is filled with electrolyte solution, and the packaging plastic frame is a conductive packaging plastic frame. The present invention completely abandons the ITO conductive layer of the upper substrate of the electrowetting device, and uses a conductive packaging plastic frame to replace the traditional sealing plastic frame. At the same time, the conductive packaging plastic frame The frame can replace the function of the ITO conductive layer of the upper substrate in the electrowetting device, and serve as a common electrode to realize the function of applying voltage to the lower substrate and the electrolyte solution. Because the ITO conductive layer of the upper substrate is discarded, there are no problems such as corrosion, breakdown, microcrystalline grooves, and mildew of the ITO conductive layer caused by the contact between the ITO conductive layer of the upper substrate and the electrolyte solution; and, The light transmittance of the upper substrate with the ITO conductive layer is low, and after the ITO conductive layer is discarded, the light transmittance of the upper substrate can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of electrowetting, in particular to an electrowetting device. Background technique [0002] 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 into a spherical shape, that is, it is not wet, and the non-wet means that the adhesion force of the liquid to the solid surface is less than its cohesive force. [0003] Such as figure 1 As shown, the structure of a general electrowetting display device mainly includes two upper and lower substrates, wherein the upper substrate is composed of an upper glass substrate 1', an ITO conductive layer 2' and a seala...

AI Technical Summary

Problems solved by technology

In order to improve the stability and reliability of electrowetting display devices, a certain concentration of ionic liquid is added to the electrolyte solution, which conflicts with the ion replacement reaction properties of ITO, and there is a risk of reducing the light transmittance of the device.

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