Panel, transistor and electronic device

Patent metadata

Field	Value
Publication number	US-10777772-B2
Application number	US-201916668262-A
Country	US
Kind code	B2
Filing date	Oct 30, 2019
Priority date	Nov 12, 2018
Publication date	Sep 15, 2020
Grant date	Sep 15, 2020

Abstract

A panel comprises a substrate, a semiconductor layer on the substrate, and including an oxide semiconductor or a low-temperature polycrystalline silicon, an interlayer insulating film on the substrate and the semiconductor layer, a passivation layer on the interlayer insulating film, an overcoat layer on the passivation layer, a light emitting layer on the overcoat layer, and an encapsulation layer on the light emitting layer. The encapsulation layer includes an auxiliary encapsulation layer having at least one of a silicon nitride (SiNx:H) layer including hydrogen, a silicon oxide (SiO2:H) layer including hydrogen, or a silicon oxynitride (SiON:H) layer including hydrogen. At least one of the interlayer insulating film, the passivation layer, or the overcoat layer is a hydrogen trapping layer.

First claim

What is claimed is:

1. A panel, comprising:
a substrate;
a semiconductor layer on the substrate, and including an oxide semiconductor or a low-temperature polycrystalline silicon;
an interlayer insulating film on the substrate and the semiconductor layer;
a passivation layer on the interlayer insulating film;
an overcoat layer on the passivation layer;
a light emitting layer on the overcoat layer; and
an encapsulation layer on the light emitting layer,
wherein the encapsulation layer includes an auxiliary encapsulation layer having at least one of a silicon nitride (SiNx:H) layer including hydrogen, a silicon oxide (SiO 2 :H) layer including hydrogen, or a silicon oxynitride (SiON:H) layer including hydrogen,
wherein at least one of the interlayer insulating film, the passivation layer, or the overcoat layer is a hydrogen trapping layer,
wherein the hydrogen trapping layer includes a first layer having silicon nitride (SiNx), a second layer having a different composition from the first layer and contacting one surface of the first layer, and a third layer having a greater thickness than each of the first and second layers, and
wherein a ratio A:B of a thickness ‘A’ of the first layer to an entire thickness ‘B’ of the hydrogen trapping layer is 1:2000 to 1:20, and a ratio C:B of a thickness ‘C’ of the second layer to the entire thickness ‘B’ of the hydrogen trapping layer is 1:2000 to 1:20.

2. The panel according to claim 1 , wherein the hydrogen trapping layer comprises at least two first layers, and the second layer is disposed between the at least two first layers.

3. The panel according to claim 1 , wherein the hydrogen trapping layer comprises an area in which the first layer and the second layer are alternately disposed, and one or more third layers is disposed on at least one of an upper portion and a lower portion of the area in which the first layer and the second layer are alternately disposed.

4. The panel according to claim 1 , wherein the second layer comprises silicon oxide (SiO 2 ).

5. The panel according to claim 1 , wherein the first layer has a greater thickness uniformity than the auxiliary encapsulation layer.

6. The panel according to claim 1 , wherein the second layer has a greater thickness uniformity than the at least one auxiliary encapsulation layer.

7. The panel according to claim 1 , wherein the first layer has a greater thickness uniformity than the third layer.

8. The panel according to claim 1 , wherein the second layer has a greater thickness uniformity than the third layer.

9. An electronic device, comprising:
a panel according to claim 1 ; and
a driving circuit configured to drive the panel.

10. A transistor on a substrate, comprising:
a semiconductor layer on the substrate, and including an oxide semiconductor or a low-temperature polycrystalline silicon;
a gate insulating layer on the semiconductor layer;
a gate electrode on the gate insulating layer;
an interlayer insulating film on the gate electrode and the semiconductor layer;
a source electrode electrically connected to the semiconductor layer in an upper portion of one end of the semiconductor layer;
a drain electrode electrically connected to the semiconductor layer in an upper portion of the other end of the semiconductor layer; and
a passivation layer on the source electrode, the drain electrode, and the interlayer insulating film,
wherein at least one of the interlayer insulating film or the passivation layer is a hydrogen trapping layer,
wherein the hydrogen trapping layer includes:
a first layer having silicon nitride (SiNx), a second layer having a different composition from the first layer and contacting one surface of the first layer, and a third layer having a greater thickness than each of the first and second layers,
wherein a ratio A:B of a thickness ‘A’ of the first layer to an entire thickness ‘B’ of the hydrogen trapping layer is 1:2000 to 1:20, and a ratio C:B of a thickness ‘C’ of the second layer to the entire thickness ‘B’ of the hydrogen trapping layer is 1:2000 to 1:20.

11. A display panel, comprising:
a substrate;
a semiconductor layer on the substrate;
an interlayer insulating film on the substrate and the semiconductor layer;
a passivation layer on the interlayer insulating;
an overcoat layer on the passivation layer;
a light emitting layer on the overcoat layer; and
an encapsulation layer on the light emitting layer,
wherein the encapsulation layer includes at least one of a silicon nitride (SiNx:H) layer including hydrogen, a silicon oxide (SiO 2 :H) layer including hydrogen, or a silicon oxynitride (SiON:H) layer including hydrogen,
wherein at least one of the interlayer insulating film, the passivation layer, or the overcoat layer includes a first layer having silicon nitride (SiNx), a second layer having a different composition from the first layer and contacting the first layer, and a third layer having a greater thickness than each of the first and second layers.

Assignees

• Lg Display Co Ltd

Inventors

• Noh Jiyong
• Yun Pilsang
• Park Sehee
• Seo Jungseok

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/874 Primary

  including getter material or desiccant · CPC title

• H10D30/674

  characterised by the active materials · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title