Engineers from China and Hong Kong have developed a special type of liquid crystal display (LCD) that is thin, flexible, lightweight, and tough. The team said that the text of newspapers you read every morning can be uploaded to this kind of paper display, and the update speed is as fast as the news cycle.
The team developed monitors with two key innovations, the first being the development of optically rewritable LCDs. Like traditional LCDs, rewritable LCDs are similar in structure to sandwiching liquid crystals between two cleats. The difference is that the rotation of the traditional liquid crystal display in the direction of light deflection can be controlled by the electrostatic field, and the optically rewritable liquid crystal display With the use of specific molecular coated plates, eliminating the need for electrodes, the thickness of the display can also be more choices.
Optical rewritable LCDs are generally thinner than conventional LCDs by less than 0.5 mm. They can be made of flexible plastics, so they weigh only a few grams and are a little thicker than real paper.
Optical rewritable LCD displays are durable and inexpensive due to their simple structure. And just like an electronic paper screen, energy is only used to switch display texts, so the use cost is very low, and the image can be maintained after the screen is written without power. The team also estimated that the production cost of this LCD is very low, and the cost of a 5-inch screen is only 5 US dollars.
The second innovation is to separate the spacers of plastic or glass plates. The researchers designed three different spacers and found that when the LCD is bent or impacted, the mesh spacer can prevent the flow of liquid crystals; in addition, the optical weight can be heavy. Writing an LCD can only display two colors at a time, but the team developed an optically rewritable LCD that can display three primary colors at the same time. To make it commercially successful, researchers hope to increase the resolution of optically rewritable LCDs.