Display module and display device

Patent metadata

Field	Value
Publication number	US-12599044-B2
Application number	US-202318121939-A
Country	US
Kind code	B2
Filing date	Mar 15, 2023
Priority date	Oct 30, 2020
Publication date	Apr 7, 2026
Grant date	Apr 7, 2026

Abstract

A display module including a plurality of pixels, according to an embodiment, may include: a first substrate: a plurality of inorganic light-emitting elements disposed on the upper surface of the first substrate; a plurality of micro pixel controllers disposed on the lower surface of the first substrate; and a driver IC which transmits driving signals to the plurality of micro pixel controllers, wherein each of the plurality of pixels includes two or more inorganic light-emitting elements among the plurality of inorganic light-emitting elements, and each of the plurality of micro pixel controllers controls two or more pixels among the plurality of pixels.

First claim

What is claimed is:

1 . A display module comprising a plurality of pixels, comprising:
a first substrate; a plurality of inorganic light-emitting devices disposed on an upper surface of the first substrate; a plurality of micro pixel controllers disposed on a lower surface of the first substrate; and a driver integrated chip configured to transfer a driving signal to the plurality of micro pixel controllers, wherein each of the plurality of pixels comprises two or more inorganic light-emitting devices among the plurality of inorganic light-emitting devices, wherein each of the plurality of micro pixel controllers is configured to control two or more pixels of the plurality of pixels, wherein each of the plurality of micro pixel controllers has a length of a shorter side that is longer than a distance between adjacent inorganic light-emitting devices in different pixels among the pixels controlled by the micro pixel controller.

2 . The display module of claim 1 , wherein each of the plurality of micro pixel controllers is configured to switch the plurality of inorganic light-emitting devices and supply driving current to the plurality of inorganic light-emitting devices.

3 . The display module of claim 1 , wherein each of the plurality of micro pixel controllers comprises:
a second substrate; and at least one thin film transistor disposed on the second substrate, wherein each of the thin film transistors is configured to switch the plurality of inorganic light-emitting devices and supply driving current to the plurality of inorganic light-emitting devices.

4 . The display module of claim 3 , wherein each of the thin film transistor comprises a Low Temperature Polycrystalline Silicon thin film transistor.

5 . The display module of claim 4 , wherein the first substrate comprises a glass substrate, and the second substrate comprises a silicon substrate.

6 . The display module of claim 1 , wherein a distance between adjacent pixels among the plurality of pixels are a same length.

7 . The display module of claim 6 , wherein each of the plurality of micro pixel controllers is disposed such that at least one part of the plurality of inorganic light-emitting devices overlaps at least one part of the micro pixel controller in an up-down direction.

8 . The display module of claim 1 , wherein each of the plurality of pixels comprises at least three sub pixels that each output different colors of light.

9 . The display module of claim 1 , wherein each of the plurality of pixels comprises a red inorganic light-emitting device, a green inorganic light-emitting device, and a blue inorganic light-emitting device among the plurality of inorganic light-emitting devices.

10 . The display module of claim 1 , wherein each of the plurality of micro pixel controllers is electrically connected with a plurality of inorganic light-emitting devices.

11 . The display module of claim 10 , wherein each of the plurality of micro pixel controllers is electrically connected with the plurality of inorganic light-emitting devices through at least one of a via hole wiring or a side wiring.

12 . A display device comprising:
a plurality of display modules comprising a plurality of pixels arranged two-dimensionally; and a frame supporting the plurality of display modules, wherein each of the plurality of display modules comprises:
a first substrate;
a plurality of inorganic light-emitting devices disposed on an upper surface of the first substrate;
a plurality of micro pixel controllers disposed on a lower surface of the first substrate; and
a driver integrated chip (IC) configured to transfer a driving signal to the plurality of micro pixel controllers,
wherein each of the plurality of pixels comprises two or more inorganic light-emitting devices among the plurality of inorganic light-emitting devices, wherein each of the plurality of micro pixel controllers controls two or more pixels among the plurality of pixels, and wherein each of the plurality of micro pixel controllers has a length of a shorter side that is longer than a distance between adjacent inorganic light-emitting devices in different pixels among the pixels controlled by the micro pixel controller.

13 . The display device of claim 12 , wherein each of the plurality of micro pixel controllers is configured to switch a plurality of inorganic light-emitting devices and supply driving current to the plurality of inorganic light-emitting devices.

14 . The display device of claim 12 , wherein each of the plurality of micro pixel controllers comprises:
a second substrate; and at least one thin film transistor disposed on the second substrate, and wherein each of the thin film transistors is configured to switch a plurality of inorganic light-emitting devices and supply driving current to the plurality of inorganic light-emitting devices.

15 . The display device of claim 14 , wherein each of the thin film transistor comprises a Low Temperature Polycrystalline Silicon thin film transistor.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Chung Changkyu
• Lee Tackmo
• Jang Kyungwoon
• Heo Gyun
• Hong Soonmin
• Hwang Daesuck

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• H10D30/6745

  Polycrystalline or microcrystalline silicon · CPC title

• H10D86/40

  characterised by multiple TFTs · CPC title

• G09G3/32

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title