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Composite light conversion layer substrate for micro-led array device and preparation method thereof

A technology of composite light and conversion layer, applied in semiconductor devices, optical filters, electrical components, etc., can solve problems such as poor film quality

Active Publication Date: 2020-12-01
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the problem of poor film-forming quality on the surface of existing quantum dot materials applied to Micro-LEDs or light conversion substrates, the present invention provides a composite light conversion layer substrate for Micro-LED array devices and a preparation method thereof. It can solve the "coffee ring effect" in the formation of the quantum dot film layer, and the effect is remarkable

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  • Composite light conversion layer substrate for micro-led array device and preparation method thereof
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  • Composite light conversion layer substrate for micro-led array device and preparation method thereof

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[0035] The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention.

[0036] Such as Figure 8 As shown, a composite light conversion layer substrate for Micro-LED array devices, the substrate includes a first substrate 1, a filter film layer 2 set on the first substrate 1, a filter film layer 2 set on the PDMS film layer 3, several photoresist isolation barriers 6 arranged on the PDMS film layer 3, red light quantum dot film layer 7 and green light quantum dot fil...

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Abstract

The invention provides a composite light conversion layer substrate for a Micro-LED array device and a preparation method thereof, and relates to the technical field of Micro-LED displays. The substrate comprises a first substrate, a filter film layer arranged on the first substrate, a PDMS film layer arranged on the filter film layer, a photoresist isolation barrier arranged on the PDMS film layer, and a photoresist isolation barrier arranged on the photoresist isolation barrier The red light quantum dot film layer and the green light quantum dot film layer are respectively arranged in the groove between them. The composite substrate of the present invention can effectively filter out the blue light emitted by the Micro-LED blue light excitation light source. At the same time, the introduction of the flexible PDMS film layer in the composite substrate effectively solves the "coffee ring effect" that occurs after inkjet printing of low-concentration quantum dot solutions. The substrate is placed upside down above the blue Micro-LED array to realize full-color display based on the blue Micro-LED array.

Description

technical field [0001] The invention relates to the field of Micro-LED display technology, in particular to a composite light conversion layer substrate for a Micro-LED array device and a preparation method thereof. Background technique [0002] Micro-LED is the latest achievement of further miniaturization of traditional LED with the continuous development of micro-nano processing technology in recent years. The size of the light-emitting unit of traditional LED is usually larger than 100 μm, while the size of a single Micro-LED is less than 100 μm. The Micro-LED display device is a two-dimensional array display device composed of high-density pixel light-emitting units integrated on a single chip. [0003] At present, there are many researches on the manufacturing process of monochrome Micro-LED display devices, and the manufacturing process is relatively mature. There are currently three main ways to prepare full-color Micro-LED display devices: three-color LED chip asse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50G02B5/20
CPCG02B5/20H01L33/505H01L2933/0041
Inventor 梁静秋王家先陶金王维彪吕金光秦余欣李阳赵永周
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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