Gradation display modulating method for electrowetting display

Abstract

The invention discloses a gradation display modulating method for an electrowetting display. The gradation display modulating method includes applying initial referential voltage between two electrodes of pixels of the electrowetting display and retaining for a while, allowing the nonpolar fluid in the electrowetting display to contract, determining a first predetermined voltage and a first predetermined time period according to target gradation of the pixels of the electrowetting display, lowering the initial referential voltage between two electrodes of pixels to the first predetermined voltage, retaining the first predetermined voltage in the first predetermined time period, releasing the contraction state of the nonpolar fluid, and the pixels displaying target gradation. The method makes full use of characteristic that nonpolar fluid is more stable during a lowering stage. The electrowetting display device is driven by lowering voltage in different phases to move nonpolar fluid stably, and the occupied area of the nonpolar fluid is accurately modulated. The visual area of each pixel grid can be accurately modulated, to control the display contrast of integral pixels and realize accurate gradation display.

Description

technical field [0001] The invention relates to the technical field of displays, in particular to a grayscale display modulation method of an electrowetting display. Background technique [0002] In recent years, reflective display devices have attracted much attention, and one of the most attractive applications is electrowetting (also known as electrowetting) display devices, because they are based on the control of polar liquids in the electrified state. Realize display, so compared with other reflective display devices, the response speed is faster, and it can also achieve high brightness, high contrast, and low energy consumption. But how to display pictures and even videos on electrowetting devices still has a lot of room for improvement. In the prior art, TFT (Thin Film Transistor thin film transistor) is used to control the electrowetting display unit, and then the software and hardware are used to control the voltage to realize the grayscale display. That is, simi...

AI Technical Summary

Problems solved by technology

However, the voltage waveforms used in the prior art to rise instantaneously, drop instantaneously, and vary in amplitude, such as image 3 As shown, it is easy to cause the movement of the first fluid 5 to be unstable, and it is difficult to grasp the area ratio occupied by the first fluid 5, and the voltage needs to be set to zero every time the state is switched, which prolongs the switching time

To sum up, in the prior art, there are problems of inaccurate grasp of the grayscale of the electrowetting display, limited refresh rate and unfavorable life of the electrowetting device itself due to the application of pulse voltage between the electrodes.

Images