A kind of electrowetting ink driving method and related equipment
A driving method and electrowetting technology, applied in static indicators, instruments, etc., can solve the problems of low opening ratio and slow response time of electrowetting display, and achieve the goals of improving backflow phenomenon, fast response speed and reducing response time Effect
Active Publication Date: 2021-05-04
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 related equipment, and relates to the technical field of electrowetting display. The method includes: editing the electrowetting ink driving waveform, the electrowetting ink driving waveform is a periodic waveform, each The waveform period includes a reverse pulse and a ramp wave, the peak value of the reverse pulse is the first driving voltage, the initial value of the ramp wave is the second drive voltage, and rises to the first drive voltage along a preset slope. After the driving voltage is maintained for a preset time, the driving waveform of the electrowetting ink is loaded to both ends of the electrowetting display screen. The present invention controls the shrinkage of the electrowetting ink droplet through the first driving voltage, and the second voltage controls the electrowetting ink droplet shrinkage. Wetting the initial value of the ink effectively reduces the response time, and setting the anti-phase pulse effectively improves the ink reflow phenomenon of the electrowetting pixel, overcomes the problems in the prior art that the ink droplets are easy to disperse and the corresponding speed is too slow, and realizes An electrowetting ink actuation method with high aperture ratio and fast response.
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