# US 10,371,999 B2 · Array substrate and manufacturing method thereof

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- Number: US 10,371,999 B2
- Document ID: US10371999B2
- Status: Granted
- Kind: B2
- Application number: 15/989,158
- Filed: 2018-05-24
- Published: 2018-09-20
- Granted: 2019-08-06
- Earliest claimed: 2015-09-24
- Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Applicants: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Inventors: Xiaoping Cheng; Yungjui Lee
- Web page: https://patentgrep.com/patent/US10371999B2

## CPC

- G02F 1/1362: Active matrix addressed cells {(G02F1/134336, G02F1/134363 take precedence)}
- G02F 1/133617: {Illumination with ultraviolet light; Luminescent elements or materials associated to the cell}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- H10D 86/0212: {comprising manufacture, treatment or coating of substrates}
- H10D 86/451: {characterised by the compositions or shapes of the interlayer dielectrics}
- H10D 86/60: wherein the TFTs are in active matrices
- G02F 1/136222: {Colour filters incorporated in the active matrix substrate}
- G02F 2201/086: UV absorbing
- G02F 2201/50: Protective arrangements
- G02F 2202/36: Micro- or nanomaterials
- H10D 86/0241: {using liquid deposition, e.g. printing}
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10K 2102/331: {Nanoparticles used in non-emissive layers, e.g. in packaging layer}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

A manufacturing method of an array substrate includes the steps of providing a base plate and forming a thin-film transistor (TFT) layer on the base plate; forming a quantum dot layer on the TFT layer; and forming a protective filter layer on the quantum dot layer to provide protection to the quantum dot layer. The protective filter layer also provides an effect of light filtering in order to prevent ultraviolet light or blue light from transmitting therethrough.

## Claims

### Claim 1

An array substrate manufacturing method, comprising the following steps:
(1) providing a base plate and forming a thin-film transistor (TFT) layer on the base plate;
(2) forming a quantum dot layer on the TFT layer; and
(3) forming a protective filter layer on the quantum dot layer, wherein the protective filter layer provides an effect of light filtering so as to prevent ultraviolet light or blue light within a predetermined waveband from transmitting therethrough, and
further comprising the following step:
(4) forming a color filter layer on the protective layer.

### Claim 2 (depends on 1)

The array substrate manufacturing method as claimed in claim 1, wherein Step 2 is specifically performed by applying a vapor deposition process to form a quantum dot film on the TFT layer so as to form the quantum dot layer.

### Claim 3 (depends on 1)

The array substrate manufacturing method as claimed in claim 1, wherein Step 2 is specifically performed by providing a quantum dot material and a dissolving medium, dissolving and dispersing the quantum dot material in the dissolving medium and uniformly mixed to form a quantum dot paste, and applying the quantum dot paste to form a film on the TFT layer and drying and curing to obtain the quantum dot layer.

### Claim 4 (depends on 3)

The array substrate manufacturing method as claimed in claim 3, wherein in Step 2, the quantum dot material is oil soluble or water soluble; the quantum dots are in the form of spheres, bars, or fibrous forms; the dissolving medium is silica series or epoxy series; and in Step 2 the quantum dot paste is applied to the TFT layer to form the film by means of spray coating, spin coating, printing, or slot-die coating.