13. There are millions of capsules between the two layers
14. Each capsule is about 5 microns wide. A micron is one millionth of a meter.
15. How BIG is a micron? Strand of hair 20-180 microns wide Red blood cell 8 microns wide
16. How do the capsules work? Filled with fluid Each capsule contains thousands of smaller black and white particles Top screen layer Bottom screen layer
17. How do the capsules work? All of the particles carry a magnetic charge The white particles have a positive charge The black particles have a negative charge
18. But how does this make letters appear on the screen?!
20. Top layer Capsules Bottom layer Electrodes Thousands of electrodes under the screen emit positive and negative electrical charges.
21. Top layer Capsules Bottom layer Electrodes When a negative charge is emitted, the negatively charged black particles are repelled and are pushed to the top of the capsule. Negative charge emitted
22. Top layer Capsules Bottom layer Electrodes When a positive charge is emitted, the positively charged white particles are repelled and are pushed to the top of the capsule. Positive charge emitted
23. Thousands of electrodes and millions of microcapsules work together to create letters and images on your eReader screen.