SEMICONDUCTOR DEVICE, DISPLAY UNIT, AND ELECTRONIC APPARATUS

• US 20140291639A1
• Filed: 03/10/2014
• Published: 10/02/2014
• Est. Priority Date: 03/27/2013
• Status: Active Grant

• Current Assignee: JDI Design and Development GK
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: TERAI, Yasuhiro, ISHII, Takahide, SATO, Ayumu
• Granted Patent: US 9,178,074 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• CPC Class Codes: H01L 27/1225 with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
• CPC Class Codes: H01L 27/1255 integrated with passive devices, e.g. auxiliary capacitors
• CPC Class Codes: H01L 27/13 combined with thin-film or thick-film passive components
• CPC Class Codes: H01L 29/7869 having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/1216 the pixel elements being capacitors

Abstract

Provided is a semiconductor device that includes: a transistor; an oxide semiconductor film; a first conductive film electrically connected to the oxide semiconductor film; and a first insulating film provided between the first conductive film and the oxide semiconductor film.

Claims

1. A semiconductor device, comprising:

a transistor;

an oxide semiconductor film;

a first conductive film electrically connected to the oxide semiconductor film; and

a first insulating film provided between the first conductive film and the oxide semiconductor film.

2. The semiconductor device according to claim 1, further comprising a capacitor, wherein

the oxide semiconductor film and the first conductive film serve as a first electrode of the capacitor.

3. The semiconductor device according to claim 2, wherein the capacitor includes a second electrode and a second insulating film, the second electrode facing the first conductive film with the oxide semiconductor film interposed in between, and the second insulating film being provided between the second electrode and the oxide semiconductor film.

4. The semiconductor device according to claim 1, wherein

the first conductive film is provided in a same layer as a gate electrode of the transistor, and the oxide semiconductor film is provided in a same layer as a channel film of the transistor, and

the first insulating film extends between the gate electrode and the channel film.

5. The semiconductor device according to claim 4, wherein

the gate electrode of the transistor and the first conductive film are made of a same material, and

the channel film of the transistor and the oxide semiconductor film are made of a same material.

6. The semiconductor device according to claim 1, wherein the first conductive film includes a metal material.

7. The semiconductor device according to claim 1, wherein the first conductive film has a potential that is same as a potential of the oxide semiconductor film.

8. A display unit, comprising:

a display layer; and

a semiconductor device configured to drive the display layer, the semiconductor device including

a transistor,

an oxide semiconductor film,

a first conductive film electrically connected to the oxide semiconductor film, and

a first insulating film provided between the first conductive film and the oxide semiconductor film.

9. The display unit according to claim 8, wherein the oxide semiconductor film and the first conductive film serve as one of a pair of electrodes that face each other with the display layer interposed in between.

10. The display unit according to claim 9, wherein the display layer is an organic layer that includes a luminescent layer.

11. The display unit according to claim 8, wherein

the semiconductor device includes a capacitor, and

the oxide semiconductor film and the first conductive film serve as an electrode of the capacitor.

12. An electronic apparatus provided with a display unit, the display unit being provided with a display layer and a semiconductor device configured to drive the display layer, the semiconductor device comprising:

a transistor;

an oxide semiconductor film;

a first conductive film electrically connected to the oxide semiconductor film; and

a first insulating film provided between the first conductive film and the oxide semiconductor film.