Granted Patent B2

US 12,193,270 · App. 17/623,604 · Granted Jan 7, 2025

Inventors: Weiran Cao (Shenzhen, CN); Gaobo Lin (Shenzhen, CN); Yuanjun Hsu (Shenzhen, CN)

H10K59/1213H10K59/124

Abstract

Claims (16)

1. A flexible display panel, comprising:

a flexible base; and

a thin film transistor, comprising an active layer arranged on the flexible base, wherein a plurality of open pores are defined in the active layer, and the open pores penetrate through at least one part of the active layer;

wherein the active layer comprises a channel region, a source electrode connecting part, and a drain electrode connecting part, and the source electrode connecting part and the drain electrode connecting part are located on two opposite sides of the channel region;

the thin film transistor further comprises a source electrode and a drain electrode; the source electrode and the drain electrode are arranged on one side of the active layer away from the flexible base, the source electrode is connected to the source electrode connecting part, and the drain electrode is connected to the drain electrode connecting part; and

at least a part of the open pores are located in and completely penetrate at least one of the source electrode connecting part and the drain electrode connecting part.

2. The flexible display panel according to claim 1 , wherein at least one of the source electrode and the drain electrode extends into the at least a part of the open pores to be connected to the active layer.

3. The flexible display panel according to claim 1 , wherein the at least a part of the open pores are located in the source electrode connecting part and the drain electrode connecting part; and the at least a part of the open pores in the source electrode connecting part and in the drain electrode connecting part are disposed symmetrically with respect to the channel region.

4. The flexible display panel according to claim 1 , wherein the thin film transistor further comprises an ohmic contact layer; the ohmic contact layer comprises a first ohmic contact part and a second ohmic contact part; the first ohmic contact part is located between the source electrode connecting part and the source; the second ohmic contact part is located between the drain electrode connecting part and the drain; and at least one of the first ohmic contact part and the second ohmic contact part extends into the open pores to be connected to the active layer.

5. The flexible display panel according to claim 1 , wherein the thin film transistor further comprises a gate electrode and a gate electrode insulation layer; the gate electrode is located among the active layer, the source electrode and the drain electrode; the gate electrode insulation layer is located between the gate electrode and the active layer; and an area of the open pores is between 0.1 square micrometers and 20 square micrometers.

6. The flexible display panel according to claim 1 , wherein another part of the open pores are located in the channel region.

7. The flexible display panel according to claim 6 , wherein the another part of the open pores in the channel region are disposed symmetrically.

8. The flexible display panel according to claim 1 , wherein another part of the open pores are located in the channel region, and the another part of the open pores in the channel region are disposed symmetrically;

the at least a part of the open pores are located in the source electrode connecting part and the drain electrode connecting part, and the at least a part of the open pores in the source electrode connecting part and in the drain electrode connecting part are disposed symmetrically with respect to the channel region; and

the source electrode and the drain electrode extend into the at least a part of the open pores to be connected to the active layer; the thin film transistor further comprises a gate electrode insulation layer; the gate electrode insulation layer covers the channel region, and the gate electrode insulation layer fills the another part of the open pores in the channel region.

9. The flexible display panel according to claim 8 , wherein the flexible display panel further comprises a first electrode, a pixel defining layer, a light-emitting layer, and a second electrode; the first electrode is arranged on the thin film transistor; the pixel defining layer is arranged on one side of the first electrode away from the thin film transistor; an opening is formed in the pixel defining layer; the light-emitting layer is arranged in the opening; and the second electrode is covered on the pixel defining layer and the light-emitting layer.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (14)