An electrowetting ink driving method and a related device
A driving method, electrowetting technology, applied in the direction of instruments, static indicators, etc., can solve the problems of slow response time, low opening ratio of electrowetting display, etc., achieve fast response speed, improve backflow phenomenon, and overcome easy dispersion Effect
Active Publication Date: 2019-08-02
SHENZHEN GUOHUA OPTOELECTRONICS +1
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Problems solved by technology
[0003] The existing electrowetting display technology realizes display by applying voltage to drive the color ink to move. However, the existing driving voltage mostly uses square waves or driving waveforms with different slopes, and the opening ratio of electrowetting display is low or the response time is too slow. The problem
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[0034] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0035] Electrowetting display technology controls the movement of colored oil droplets by applying voltage to achieve grayscale display. Its essence is a simple optical switch, which has excellent grayscale display characteristics. When no voltage is applied to the electrowetting structure, the ink droplet is in a flat state, and the state at this time is also the lowest energy state. When a voltage is applied at that time, ideally, the ink droplet shrinks to a corner, and the electrowetting The aperture ratio reaches the maximum.
[0036] The existing driving waveforms are mainly traditional square waves, such as figure 1 As shown, it satisfies the requirement of fast response of electrowetting, but for electrowetting display driving pixels, there will be ink dispersion, ink droplets usually shrink to tw...
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The invention discloses an electrowetting ink driving method and a related device, and relates to the technical field of electrowetting display. The method comprises the following steps of editing anelectrowetting ink driving waveform, wherein the electrowetting ink driving waveform is a periodic waveform, each waveform period comprises a reverse pulse and an oblique square wave, the peak value of the reverse pulse is a first driving voltage, and the initial value of the oblique square wave is the second driving voltage; raising to a first driving voltage along a preset slope and then keepingfor a preset time; and loading the electrowetting ink driving waveform to two ends of an electrowetting display screen. According to the invention, the electrowetting ink droplets are controlled to shrink through the first driving voltage; the second voltage controls the initial value of the electrowetting ink, so that the response time is effectively shortened. By setting the reverse phase pulse, the backflow phenomenon of the electrowetting pixel ink is improved effectively, the problems that ink droplets are easy to disperse and the corresponding speed is too slow in the prior art are solved, and the electrowetting ink driving method is high in aperture ratio and fast in response speed.
Description
technical field [0001] The invention relates to the technical field of electrowetting display, in particular to an electrowetting ink driving method and related equipment. Background technique [0002] Electrowetting (EFD) display technology belongs to a reflective display technology. In the case of no electric field applied to the electrowetting device, the dyed polar liquid inside the device covers the entire pixel unit, and the pixel unit displays the color of the polar liquid. After the driving voltage is applied, the dyed liquid (such as ink) of the pixel unit shrinks , so that the white base plate is exposed, and the dyeing liquid of the pixel unit is switched between the flat or contracted state, realizing the grayscale display of the pixel. [0003] The existing electrowetting display technology realizes display by applying voltage to drive the color ink to move. However, the existing driving voltage mostly uses square waves or driving waveforms with different slope...
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IPC IPC(8): G09G3/34
CPCG09G3/348
Inventor 易子川冯文勇王利周国富
Owner SHENZHEN GUOHUA OPTOELECTRONICS