Circuit and system integration onto a microdevice substrate

Patent metadata

Field	Value
Publication number	US-12419145-B2
Application number	US-202318161366-A
Country	US
Kind code	B2
Filing date	Jan 30, 2023
Priority date	Feb 9, 2017
Publication date	Sep 16, 2025
Grant date	Sep 16, 2025

Abstract

An integrated optical display system includes a backplane with appropriate electronics, and an array of micro-devices. A touch sensing structure may be integrated into the system. In one embodiment, an integrated circuit and system is integrated on top of micro-devices transferred to a substrate. Openings in a planarization layer (or layers) may be provided to connect the micro-devices with electrodes and other circuitry. Light reflectors may be used to redirect the light, and color conversion layers or color filters may be integrated before the micro-devices or on the substrate surface opposite to the surface of micro-devices.

First claim

What is claimed is:

1. A display system comprising:
a substrate;
one or more planarization layers formed over and in contact with the substrate;
a light distribution layer and a bonding layer formed over a top surface of the one or more planarization layers and connected together;
at least one micro device transferred to on top of the bonding layer; and
one or more color conversion layers disposed on or over the at least one micro device.

2. The display system of claim 1 , wherein the light distribution layer can be on part of a bank layer with a reflective layer or fill the entire bank layer.

3. The display system of claim 1 , wherein a reflective layer is formed between the one or more planarization layers and the bonding layer to direct light through the light distribution layer.

4. The display system of claim 1 , wherein a buffer layer is modified to separate the substrate from a display system.

Assignees

• Vuereal Inc

Inventors

• Chaji Gholamreza
• Fathi Ehsanollah
• Sadeghimakki Bahareh
• Siboni Hossein Zamani

Classifications

• H10W90/00

  Package configurations · CPC title

• H10H20/84

  Coatings, e.g. passivation layers or antireflective coatings · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/40 Primary

  characterised by multiple TFTs · CPC title

• H10H20/0364

  of interconnections · CPC title