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Apple Advances their Quantum Dot Display Invention by adding Metal-Oxide Nanoparticles over Q-Dot Subpixels

1 X cover Quantum Dot technology patent

 

In August 2017 Patently Apple posted an IP report titled "Apple Invents Quantum Dot Hybrid Pixels for Future Power Efficient Displays that Could Deliver 'Pure Color.'" In late January we reported on Apple being granted that patent by the U.S. Patent Office.  Today the US Patent & Trademark Office published a patent application from Apple that extends their progress on this invention that could lead to a next-gen super high-end display with "pure color" that consumes 50% less power. 

 

Technically this is a continuation patent even though it's not referred to as such because Apple filed this in December, one month before their original patent was granted. With continuation patents, the base of the invention remains intact. What changes is the addition of new patent claims about the invention. Apple wants key aspects of the patent specifically highlighted in the claims that are legally binding and protection against patent trolls or copycat inventions.

 

So what's been added to their invention about a Quantum Dot LED and OLED display? Below are a few of the key new additions to Apple's patent claims that differ from their original granted patent.

 

Patent Claim #1: A display comprising: a tandem hybrid pixel including an organic light emitting diode (OLED) subpixel and a quantum dot light emitting diode (QD-LED) subpixel; a common hole transport layer in the OLED subpixel and the QD-LED subpixel; a common quantum dot layer over the common hole transport layer in the QD-LED subpixel and in the OLED subpixel; a semi-common charge generation layer over the common quantum dot layer in the OLED subpixel; a first cathode over the common quantum dot layer in the QD-LED subpixel; a semi-common hole transport layer over the semi-common charge generation layer in the OLED subpixel; an organic emission layer over the semi-common hole transport layer in the OLED subpixel; a semi-common electron transport layer over the organic emission layer in the OLED subpixel; and a semi-common second cathode over the semi-common electron transport layer in the OLED subpixel.

 

Patent Claim #2: The display of claim 1, further comprising: a common nanoparticle electron transport layer comprising metal-oxide nanoparticles over the common quantum dot layer in the QD-LED subpixel and in the OLED subpixel; wherein the semi-common charge generation layer is over the common nanoparticle electron transport layer in the OLED subpixel, and the first cathode is over the common nanoparticle electron transport layer in the QD-LED subpixel.

 

Patent Claim #6: A display comprising: a tandem hybrid pixel including an organic light emitting diode (OLED) subpixel and a quantum dot light emitting diode (QD-LED) subpixel; a common hole transport layer in the OLED subpixel and the QD-LED subpixel; a common quantum dot layer over the common hole transport layer in the QD-LED subpixel and in the OLED subpixel; a common charge generation layer over the common quantum dot layer in the OLED subpixel and in the QD-LED subpixel; a common hole transport layer over the common charge generation layer in the OLED subpixel and in the QD-LED subpixel; an organic emission layer over the common hole transport layer in the OLED subpixel; a common electron transport layer over the common hole transport layer in the OLED subpixel and in the QD-LED subpixel, the common electron transport layer additionally over the organic emission layer in the OLED subpixel; and a common cathode over the common electron transport layer in the OLED subpixel and in the QD-LED subpixel.

 

Patent Claim #7: The display of claim 6, further comprising: a common nanoparticle electron transport layer comprising metal-oxide nanoparticles over the common quantum dot layer in the QD-LED subpixel and in the OLED subpixel; wherein the common charge generation layer is over the common nanoparticle electron transport layer in the OLED subpixel and in the QD-LED subpixel.

 

Patent Claim #11: A display with tandem QD-LED and OLED tandem stack comprising: a common anode; a common hole transport layer over the common anode; a common quantum dot layer over the common hole transport layer; a common charge generation layer over the common quantum dot layer; a common hole transport layer over the common charge generation layer; a common organic emission layer over the common hole transport layer; a common electron transport layer over the common organic emission layer; and a common cathode over the common electron transport layer.

 

To review all of Apple's additional patent claims, review patent 20190131356 here. Apple's patent application that was published today by the U.S. Patent Office was originally filed back in Q4 2018. Considering that this is a patent application, the timing of such a product to market is unknown at this time.

 

10.51XF - Continuation Patent Report Bar

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