# US 12,765,238 B2 · Array substrate and display device

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- Number: US 12,765,238 B2
- Document ID: US12765238B2
- Status: Granted
- Kind: B2
- Application number: 16/646,157
- Filed: 2020-01-13
- Published: 2025-11-13
- Granted: 2026-10-13
- Earliest claimed: 2019-08-30
- Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Inventors: Huihui Zhao; Jiaqing He
- Web page: https://patentgrep.com/patent/US12765238B2

## CPC

- H10K 59/874: {including getter material or desiccant}
- H10D 86/451: {characterised by the compositions or shapes of the interlayer dielectrics}
- H10D 86/60: wherein the TFTs are in active matrices
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES

## Abstract

The present disclosure provides an array substrate and a display device. The array substrate includes a substrate layer, a functional structure layer, a passivation layer, and an organic planarization layer. The functional structure layer has an organic filling layer, and the passivation layer is disposed between the organic filling layer and the organic planarization layer.

## Claims

### Claim 1

An array substrate, comprising:
a substrate layer;
a functional structure layer disposed on the substrate layer and having an organic filling layer;
at least one passivation layer disposed on the organic filling layer of the functional structure layer and having hydrophilic substances or groups and/or hydrophobic substances or groups; and
an organic planarization layer disposed on a surface of the passivation layer away from the functional structure layer;
wherein the passivation layer is a double-layered structure, one layer of the passivation layer adjacent to the organic filling layer has hydrophilic substances or groups, and another layer of the passivation layer adjacent to the organic planarization layer has hydrophobic substances or groups.

### Claim 2 (depends on 1)

The array substrate according to claim 1, wherein the functional structure layer further comprises:
a barrier layer disposed on the substrate layer;
a buffer layer disposed on the barrier layer;
an active layer disposed on the buffer layer;
a first insulating layer disposed on the active layer and the buffer layer;
a first gate electrode layer disposed on the first insulating layer;
a second insulating layer disposed on the first gate electrode layer and the first insulating layer;
a second gate electrode layer disposed on the second insulating layer;
a dielectric layer disposed on the second gate electrode layer and the second insulating layer; and
a source/drain electrode layer disposed on the dielectric layer and penetrating through the dielectric layer, the second insulating layer, and the first insulating layer to connect to two ends of the active layer;
wherein the organic filling layer is disposed between the dielectric layer and the source/drain electrode layer.

### Claim 3 (depends on 2)

The array substrate according to claim 2, wherein the organic filling layer has an extending part and a vertical part, the extending part covers the dielectric layer, and the vertical part is perpendicularly connected to the extending part and penetrates through the dielectric layer, the second insulating layer, the first insulating layer, the buffer layer, and a portion of the barrier layer.

### Claim 4 (depends on 3)

The array substrate according to claim 3, comprising
a functional area and a non-functional area surrounding the functional area, wherein the extending part of the organic filling layer is disposed in the non-functional area, and the active layer, the first gate electrode layer, the second gate electrode layer, and the source/drain electrode layer are disposed in the functional area.

### Claim 5 (depends on 2)

The array substrate according to claim 2, wherein the active layer has a doped area correspondingly disposed at the two ends of the active layer, and the source/drain electrode layer is connected to the doped area.

### Claim 6 (depends on 1)

The array substrate according to claim 1, wherein a material of the passivation layer is one or more of inorganics or organics with hydrophilic bonds.

### Claim 7 (depends on 6)

The array substrate according to claim 6, wherein the inorganics is one or more of silicon nitride, silicon oxide, monocrystalline silicon, germanium, or zirconium oxide, and
the organics is one or more of organics with a carboxyl group or organics with a hydroxyl group.

### Claim 8 (depends on 1)

A display device, comprising the array substrate according to claim 1.