Granted Patent B2

US 12,572,046 · App. 18/806,908 · Granted Mar 10, 2026

Inventor: Sakae Tanaka (Saitama, JP)

Assignee: Mikuni Electron Corporation

G02F1/1368G02F1/1339G02F1/134309G02F1/13439G02F1/1345H10D30/6734H10D30/6755H10D86/423H10D86/443H10D86/60

Abstract

Claims (25)

1 . A display device, comprising:

a first substrate;

a pixel electrode and a common electrode;

a transistor connected to the pixel electrode;

a color filter layer overlapping the pixel electrode and the common electrode;

a light shielding layer overlapping the transistor;

a first insulating layer between the color filter layer and light shielding layer and the transistor; and

a second insulating layer above the first insulating layer,

the transistor includes:

a semiconductor layer between the first insulating layer and the second insulating layer; and

a gate electrode overlapping the semiconductor layer and above the second insulating layer,

the semiconductor layer and the gate electrode overlap the light shielding layer,

the light shielding layer has conductivity.

2 . The display device according to claim 1 , wherein the light shielding layer has a constant potential.

3 . The display device according to claim 2 , wherein the light shielding layer is formed by one of titanium silicide, tantalum silicide, and molybdenum silicide.

4 . The display device according to claim 1 , wherein the semiconductor layer is an oxide semiconductor layer.

5 . The display device according to claim 4 , further comprising a first oxide conductive layer and a second oxide conductive layer between the first insulating layer and the oxide semiconductor layer,

wherein the first oxide conductive layer and the second oxide conductive layer are in contact with the oxide semiconductor layer.

6 . The display device according to claim 5 , wherein the first oxide conductive layer is a source electrode and the second oxide conductive layer is a drain electrode, and the pixel electrode is formed from the second oxide conductive layer.

7 . The display device according to claim 6 , further comprising a data signal line between the first oxide conductive layer and the oxide semiconductor layer.

8 . The display device according to claim 7 , wherein the light shielding layer overlaps the data signal line.

9 . The display device according to claim 1 , further comprising:

an overcoat layer as a planarization layer between the color filter layer and light shielding layer and the first insulating layer; and

a silicon nitride layer between the overcoat layer and the first insulating layer.

10 . The display device according to claim 1 , wherein the pixel electrode is flat and the common electrode has at least one slit.

Priority Claims (1)

Continuity (3)

References Cited (333)