Main characteristics of electrowetting

Electrowetting technology (adopted by LG and Philips) is a color flat film, which is a color pixel. After the voltage is applied, the surface tension of the color oil changes and moves to the white side of the pixel. When you are slow, you usually have to wait a few seconds to "turn the page", which is definitely not enough for video playback. Electrowetting technology: The movement of professional display company oil uquavlsIa spun off from Philips Laboratories adopted another color display technology-"electrowetting" (E}ecfrowB lnq). This patent owned by Philips uses a highly hydrophobic material, which can drain water from the surface and use oil film as the medium to form separate oil phase and water phase. The wetting effect of waterproof surface can be changed by using voltage (called "electrowetting") to make the surface more hydrophilic (wetting).

In principle, any desired color can be given to the pixels to obtain various display results. Electrowetting controls the surface layer of sealed liquid by controlling the voltage, which leads to the change of pixels. When no voltage is applied, a flat film is formed between the colored liquid and the outer layer of the non-hydrophilic insulating electrode, which is a colored pixel. When MOD (adopted by Qualcomm) is applied between the electrode and the liquid, the new computer glass substrate and the reflective conductive membrane are separated by an air gap. When the air gap thickness is reduced to form an isolation state, the visible light interference is weakened and the pixels turn black.

When a voltage is applied, the tension of the contact surface between the liquid and the outer layer of the electrode changes. As a result, its original static Ih state is no longer stable, causing the liquid to move sideways, resulting in partially transparent pixels. In addition to electrophoresis and electrowetting, many companies and institutions are committed to developing various reflective color display electronic paper technologies with new pixel materials and special structures, among which Qualcomm's interferometer regulator display technology (1n, cModuafor, Rome) is more successful.

Qualcomm's Muldsol series electronic paper products adopt lMOD technology. The basic structure of an lMOD pixel is a glass substrate covered by a thin film, and a reflective conductive diaphragm is on the substrate, which is separated from the glass substrate by an air gap. In the shouldered state, the pixel is bright, and the color is generated by thin film interference based on the thickness of the air gap. Voltage is applied to the diaphragm and the thin film on the glass substrate, and the diaphragm is electrostatically attracted to the glass. When the air gap thickness is reduced to a very small value, the visible light interference is weakened, which leads to the blackening of pixels. LMOD is a reflective display technology and a new display technology. Even in the sun, it can make the display of the mobile phone clear and sharp. The process of displaying color is the same as the principle of butterfly wings shining. IMOD uses a set of micro-display structure technology to produce gorgeous brilliance on the wings of tropical butterflies. The display device based on lMOD technology has many advantages, because it can be clearly displayed in the sun without backlight. Compared with other display technologies, lMOD has low energy consumption and long battery life.