 
 <prompt> Wia di new method for producing high-brightness blue LEDs come from? Given di previous question, write a context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: In di late 1980s, key breakthroughs for GaN epitaxial growth and p-type doping bring in di modern era of GaN-based optoelectronic devices. Building upon dis foundation, Dr. Moustakas for Boston University get patent for method to produce high-brightness blue LEDs using new two-step process. Two years later, for 1993, high-brightness blue LEDs show again by Shuji Nakamura of Nichia Corporation using gallium nitride growth process wey resemble Dr. Moustakas own. Both Dr. Moustakas and Mr. Nakamura get separate patents, wey confuse di matter of who be di original inventor (partly because even though Dr. Moustakas invent him first, Dr. Nakamura file first). Dis new development change LED lighting, make high-power blue light sources practical, wey lead to di development of technologies like BlueRay, as well as allow di bright high resolution screens of modern tablets and phones. 