Blue Phase Mode LCD is a liquid crystal display technology that uses highly twisted blue cholesterol liquid crystal. In 2005, scientists found a stable blue liquid crystal that can use electric field to change the reflected light. As early as 10 years ago in 2007, someone proposed to use this technology to improve the refresh rate to improve the image effect of LCD.

One year later, Samsung Electronics released the first blue phase LCD panel, which is also the first screen panel to achieve a 240Hz scrub rate. One of the advantages of this technology is that it does not need to use a phase matching layer (a thin layer used to make liquid crystal molecules orderly arranged, the common manufacturing method is to coat a layer of polyimide on the glass, and then rub it in the fixed direction). Therefore, in theory, it can reduce the cost of production. However, the panel cannot be listed due to its high driving voltage, overheating, low contrast and other shortcomings.

On February 1, the American Optical Society announced that the new generation blue liquid crystal technology had been successfully developed and was approaching the stage of mass production. It is worth noting that this time the blue phase liquid crystal mainly improves the pixel density rather than the refresh rate. It claims that it can make the PPI (number of pixels per inch of area) of the panel as high as 1500. The previous highest PPI record on mobile phones is the Xperia Z5 Premium released by Sony in 2015, which has a 4K resolution in 5.5 inches and a PPI of up to 806. The common PPI of mobile phones is between 300-400. When Apple released the iPhone 4 Retina screen standard only has 300PPI.

The main use of this technology is the head mounted virtual display device, which is the field that needs PPI most now because of its short viewing distance. The new blue phase liquid crystal technology solves the problem of high voltage and high heating, which can achieve 10 times the driving speed of ordinary liquid crystal screen, and the response speed is less than 1ms. It is expected that the screen installed on the prototype can be produced in 2018.

Follow our Weibo @ Love Computer

Follow our WeChat official account: playphone

Of course, we also pay attention to our Bilibili account: love computer