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Four Apple patent applications outline quantum dot use

updated 01:05 pm EST, Sun February 9, 2014

USPTO information hints at future retina displays

Information from Patently Apple shows that new developments for Apple's retina displays may be in the works for the company. Four patent applications published by the United States Patent and Trademark Office show the use of quantum dots on display layers and various technologies surrounding their optimization for better color through displays which the company had began approaching with a filing in September 2012.

Applications regarding the use of technologies for quantum dots in displays are outlined across the four applications and cover various ground. While the use of quantum dots, independent nanocrystal semi-conductors, may seem like a something straight forward, each application covers something specific to the process.

Application 20140035960 covers the use of quantum dot backlights and the methods for controlling the dimming of a display. The controls of which could alter the light range of an LED backlight that emits light through a sheet of quantum dots therefore having the quantum dots react to the light given off by them.

On the surface the outline for Coatings for eliminate LED hot spots in application 20140036538 may seem as if they have no connection to the other patents, but quantum dot sheets are specifically included in the text. The outline states that the application is related to coatings on backlight displays for hot spot reduction at certain levels, but that the coating can be set in a pattern depending on the position of the lighting of which the material for the coating can be a reflective, diffusive or dichoric.

Light mixtures for quantum dot displays are covered in application 20140036203, which relates to the coats in the previous applications based on the light mixture of displays which may require a special coating. Through the use of diffusers and prism sheets a better light mixture can be obtained.

The last application, 20140036536, goes over the use of a microelectromechanical shutter module that is used in the display to control the color of each pixel for a display that uses the quantum dots to emit colored light at least partially.

All of the applications 20140035960, 20140036538, 20140036203 and 20140036536 relating to the use of quantum dots can be read at the USPTO website.




by MacNN Staff

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