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HOLLOW GLASS BEADS FOR ENHANCING LUMINANCE OF QUANTUM DOT CHIPLETS

IP.com Disclosure Number: IPCOM000246453D
Publication Date: 2016-Jun-08
Document File: 17 page(s) / 1M

Publishing Venue

The IP.com Prior Art Database

Abstract

In quantum dot technology, a quantum dot consists of tiny, nanoscale sized particles of semiconducting material. These particles have been found to be useful in light emitting diode (LED) displays at least because a quantum dot emits visible light when the quantum dot absorbs blue light. As such, LED display developers have sought ways of incorporating these quantum dots into LED displays so as to maximize the benefits provided by quantum dots. Two common means of incorporating quantum dots into LED displays include quantum dot chiplets and quantum dot films. Quantum dot chiplets are generally used in direct-lit panels, while quantum dot films are generally used in edge-lit panels. It has been found that the luminance of direct-lit LED display panels using quantum dot chiplets is about 4% to about 50% lower than the luminance of edge-lit LED display panels using quantum dot films. Therefore, the focus of this research is directed to enhancing the luminance of direct-lit LED display panels using quantum dot chiplets. Specifically, using hollow glass beads within the quantum dot resin of the quantum dot chiplet has been found to enhance the luminance of the quantum dot by increasing the probability of blue light contacting the quantum dot.

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HOLLOW GLASS BEADS FOR ENHANCING LUMINANCE OF QUANTUM DOT CHIPLETS ABSTRACT

    In quantum dot technology, a quantum dot consists of tiny, nanoscale sized particles of semiconducting material. These particles have been found to be useful in light emitting diode (LED) displays at least because a quantum dot emits visible light when the quantum dot absorbs blue light. As such, LED display developers have sought ways of incorporating these quantum dots into LED displays so as to maximize the benefits provided by quantum dots. Two common means of incorporating quantum dots into LED displays include quantum dot chiplets and quantum dot films. Quantum dot chiplets are generally used in direct-lit panels, while quantum dot films are generally used in edge-lit panels. It has been found that the luminance of direct-lit LED display panels using quantum dot chiplets is about 4% to about 50% lower than the luminance of edge-lit LED display panels using quantum dot films. Therefore, the focus of this research is directed to enhancing the luminance of direct-lit LED display panels using quantum dot chiplets. Specifically, using hollow glass beads within the quantum dot resin of the quantum dot chiplet has been found to enhance the luminance of the quantum dot by increasing the probability of blue light contacting the quantum dot.

BACKGROUND &SUMMARY

    In quantum dot technology, a quantum dot consists of tiny, nanoscale sized particles of semiconducting material. These particles have been found to be useful in light emitting diode (LED) displays at least because quantum dots emit visible light when the quantum dot absorbs blue light. The wavelength of visible light emitted by the quantum dot is dependent on the size of the quantum dot. Using mixtures of quantum dots, white light may be generated, making

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quantum dots useful as light sources of backlight units for displays (e.g., TVs, monitors, tablets, etc.).

    As such, LED display developers have sought ways of incorporating these quantum dots into LED displays so as to maximize the benefits provided by quantum dots. Referring to FIG. 1, two common means of incorporating quantum dots into LED displays include quantum dot chiplets and quantum dot films. Quantum dot chiplets are small chips that contain the quantum dot, whereas the quantum dot films are quite literally, films made from a quantum dot. Quantum dot chiplets are generally used in direct-lit panels, while quantum dot films are generally used in edge-lit panels. In terms of structure, the edge-lit panel (a) has blue LEDs on the side of the panel and uses a large of quantum dot film for emitting white light. In comparison, the direct-lit panel
(b) has blue LEDs at the bottom of the panel and the uses small quantum dot chiplet fitted to the blue LED. Though quantum dot chiplets are generally more reliable than quantum dot films, it has been found that the luminance of direct-lit panels using quantum dot chiplets is about 4% to a...