Array substrate and manufacturing method thereof and display device

A method for manufacturing an array substrate, comprising:

• forming a first heat dissipation layer on a carrier plate;
• forming a plurality of drive devices and a plurality of metal wires on the first heat dissipation layer, wherein the metal wires are arranged between the drive devices;
• forming openings in the drive devices;
• and
• forming connection sections on the first heat dissipation layer, such that the connection sections each have an end extending through the openings to connect with one of the drive devices and another end extending across the metal wires to connect with an adjacent one of the drive devices;
• wherein the carrier plate is sputtered with a base target, and the base target of the carrier plate is subjected to plasma treatment or high temperature annealing in an oxygen atmosphere to form the first heat dissipation layer.

A display device, comprising an array substrate, the array substrate comprising a carrier plate, a first heat dissipation layer, and a function layer arranged to stack in sequence on each other, the function layer being arranged on one side adapted to face a user, wherein the function layer comprises a plurality of drive devices and metal wires and connection sections arranged between the plurality of drive devices, the plurality of drive devices being formed therein with openings, the connection sections each having an end extending through the openings to connect to one of the drive devices and an opposite end extending across the metal wires to connect to an adjacent one of the drive devices, the first heat dissipation layer dissipating heat from the metal wires, the plurality of drive devices, and the connection sections through the carrier plate;

• wherein the function layer comprises drive device zones, metal wire zones, and connection section zones, the drive device zones comprising the drive devices arranged therein, the metal wire zones comprising the metal wires arranged therein, the connection section zones comprising the connection sections arranged therein, the first heat dissipation layer having an orthogonal projection on the function layer that falls within the metal wire zones, the drive device zones, and the connection section zones;
• and
• wherein the array substrate further comprises a light-transmitting layer, wherein the light-transmitting layer is filled in the first heat dissipation layer, the light-transmitting layer having a first surface facing the function layer, the first heat dissipation layer having a second surface facing the function layer, the first surface being flush with the second surface.