System and method for display panel

Patent metadata

Field	Value
Publication number	US-12369396-B2
Application number	US-202118002226-A
Country	US
Kind code	B2
Filing date	Jun 17, 2021
Priority date	Jun 18, 2020
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

A display panel (65) and a method for manufacturing a display panel (65) that includes a front side and a back side, the display panel (65) including a substrate having a plurality of electrical components provided on a front side of the substrate and integrated circuits connected to the plurality of electrical components, the integrated circuits being embedded in the substrate. A plurality of edge contacts (54, 62) is also provided along edges of the substrate, where the plurality of edge contacts (54, 62) is electrically connected with the integrated circuits. An electrically conductive layer (51, 61) covers at least a part of the front side of the substrate and surrounds the plurality of electrical components, where the electrically conductive layer (51, 61) does not physically contact the embedded integrated circuits and provides EMI shielding to different components of the display panel (65).

First claim

The invention claimed is:

1. A display panel having a front side and a back side, said display panel comprising:
at least one substrate comprising a plurality of electrical components provided on a front side of the at least one substrate;
integrated circuits connected to the plurality of electrical components, said integrated circuits being embedded in the at least one substrate;
a plurality of edge contacts provided along edges of the at least one substrate, said plurality of edge contacts being electrically connected with the integrated circuits, wherein said edges are provided between the front side and a back side of the at least one substrate,
an electrically conductive layer covering at least a part of the front side of the at least one substrate and surrounding the plurality of electrical components to provide electromagnetic shielding, and;
a plurality of peripheral contacts provided on at least one of the front side or the back side of the at least one substrate, wherein the plurality of peripheral contacts is connected to the plurality of edge contacts,
wherein the at least one substrate is configured so that the electrically conductive layer does not physically contact the embedded integrated circuits.

2. The display panel according to claim 1 , wherein the plurality of electrical components comprises a plurality of light sources.

3. The display panel according to claim 1 , wherein the electrically conductive layer is provided with openings for the plurality of electrical components, wherein the plurality of electrical components is placed within the openings so that there is no physical contact between the plurality of electrical components and the electrically conductive layer surrounding the plurality of electrical components.

4. The display panel according to claim 1 , wherein the plurality of electrical components is electrically connected to the at least one substrate via connecting means.

5. The display panel according to claim 1 , wherein the integrated circuits are provided as an active matrix, said active matrix comprising thin-film-transistor (TFT) layers, wherein said electrically conductive layer is provided above the TFT layers.

6. The display panel according to claim 1 , wherein an electrical insulation layer is provided above the electrically conductive layer.

7. The display panel according to claim 1 , wherein the electrically conductive layer comprises a first part and a second part that are separated by gaps, said first part configured as a power line for the plurality of electrical components, wherein said first part and said second part are electrically insulated from each other.

8. The display panel according to claim 7 , wherein the first part of the electrically conductive layer is kept at a different voltage than the second part of the electrically conductive layer.

9. The display panel according to claim 1 , further comprising at least one second substrate, wherein said at least one second substrate comprises a second electrically conductive layer and a second plurality of edge contacts, wherein the at least one second substrate is attached to the at least one substrate to form the display panel.

10. The display panel according to claim 9 , wherein the second electrically conductive layer covers said back side of the display panel.

11. The display panel according to claim 1 , wherein the at least one substrate comprises insulating material.

12. The display panel according to claim 11 , wherein the insulating material is glass.

13. A display panel having a front side and a back side, said display panel comprising:
at least one substrate comprising glass, said at least one substrate comprising a plurality of electrical components provided on a front side and a back side of the at least one substrate;
integrated circuits connected to the plurality of electrical components, said integrated circuits being embedded in the at least one substrate;
a plurality of edge contacts provided along edges of the at least one substrate, said plurality of edge contacts being electrically connected with the integrated circuits, wherein said edges are provided between the front side and the back side of the at least one substrate, and
an electrically conductive layer covering at least a part of the front side and at least a part of the back side of the at least one substrate and surrounding the plurality of electrical components to provide electromagnetic shielding,
wherein the at least one substrate is configured so that the electrically conductive layer does not physically contact the embedded integrated circuits.

14. A method for forming a display panel comprising the steps of:
forming at least one substrate comprising a plurality of edge contacts along edges of the at least one substrate, wherein integrated circuits are embedded in the at least one substrate and electrically connected with the plurality of edge contacts, wherein the plurality of edge contacts are provided between a front surface and a back surface of the at least one substrate;
providing an electrically conductive layer over at least a part of the front surface of the at least one substrate;
providing openings in the electrically conductive layer;
attaching a plurality of electrical components to at least the front surface of the at least one substrate through the openings in the electrically conductive layer, the plurality of electrical components being electrically connected to the integrated circuits and the electrically conductive layer surrounding the plurality of electrical components to provide electromagnetic shielding; and
providing a plurality of peripheral contacts on at least one of the front surface or the back surface of the at least one substrate, wherein the plurality of peripheral contacts is connected to the plurality of edge contacts,
wherein the at least one substrate is configured such that the electrically conductive layer does not physically contact the embedded integrated circuits.

15. The method for forming a display panel according to claim 14 , wherein the integrated circuits are thin-film-transistor circuits, the method further comprising the steps of:
segmenting the at least one substrate into at least two segments; and
forming the display panel, wherein one of the at least two segments is provided on a front side of the display panel, and the other of the at least two segments is provided on a back side of the display panel.

16. The method according to claim 15 , wherein the at least two segments comprise at least two of the following: driving electronic circuits, power electronic circuits, circuits for driving the plurality of electrical components, circuits for current mirroring, circuits for level shifting, and circuits for distributing power to the display panel as well as line selecting capabilities.

17. The method for forming a display panel according to claim 14 , said method further comprising the steps of:
forming at least one second substrate comprising thin-film-transistor circuits, wherein the at least one substrate comprises the plurality of electrical components for display and the at least one second substrate comprises power and driving electronic circuits;
combining the at least one substrate with the at least one second substrate, wherein the at least one substrate forms a front side of the display panel and the at least one second substrate forms a back side of the display panel.

18. The method for forming a display panel according to claim 14 , wherein forming the at least one substrate comprises forming

Assignees

• Barco Nv

Inventors

• Van Eessen Wim
• Willem Patrick
• Van Den Bossche Bart
• Gerets Peter

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10D86/0212

  comprising manufacture, treatment or coating of substrates · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10H20/0364

  of interconnections · CPC title