METHODS AND APPARATUS FOR MANUFACTURING A SEMICONDUCTOR DEVICE IN A PROCESSING CHAMBER

• US 20090035941A1
• Filed: 07/31/2008
• Published: 02/05/2009
• Est. Priority Date: 08/01/2007
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Jin-Ho, Park, Jun-Ho, Lee, Ho-Ki, Choi, Gil-Heyun, Lee, Sang-Woo
• Application Number:
  US12/183,421
• Publication Number:
  US 20090035941A1
• Time in Patent Office: Days
• US Class Current: 438/675
• CPC Class Codes: C23C 16/06 characterised by the deposition of metallic material
• CPC Class Codes: C23C 16/34 Nitrides C23C16/303 takes precedence
• CPC Class Codes: C23C 16/45519 Inert gas curtains
• CPC Class Codes: C23C 16/54 Apparatus specially adapted for continuous coating
• CPC Class Codes: H01L 21/28562 Selective deposition
• CPC Class Codes: H01L 21/6719 characterized by the construction of the processing chambers, e.g. modular processing chambers
• CPC Class Codes: H01L 21/67207 comprising a chamber adapted to a particular process
• CPC Class Codes: H01L 21/76843 formed in openings in a dielectric
• CPC Class Codes: H01L 21/76846 Layer combinations
• CPC Class Codes: H01L 21/76856 by treatment in plasmas or gaseous environments, e.g. nitriding a refractory metal liner

Abstract

An apparatus for manufacturing a semiconductor device includes a process chamber configured to perform a plurality of different processes on a substrate. A gas supply unit is configured to supply at least one process gas to the process chamber. At least one upper electrode unit is positioned at an upper portion of the process chamber. At least one lower electrode unit is opposite the upper electrode unit and configured to support a substrate thereon. A driving member is connected to at least one of the lower electrode unit and the upper electrode unit and is configured to move the lower electrode unit and/or the upper electrode unit to control a distance between the upper and the lower electrode units. A power supply unit is configured to apply a first power to the upper electrode unit and to apply a second power to the lower electrode unit.

Claims

1. An apparatus for manufacturing a semiconductor device, comprising:

a process chamber configured to perform a plurality of different processes on a substrate;

a gas supply unit configured to supply at least one process gas to the process chamber;

at least one upper electrode unit positioned at an upper portion of the process chamber;

at least one lower electrode unit opposite the upper electrode unit and configured to support a substrate thereon;

a driving member connected to at least one of the lower electrode unit and the upper electrode unit and configured to move the lower electrode unit and/or the upper electrode unit to control a distance between the upper and the lower electrode units; and

a power supply unit configured to apply a first power to the upper electrode unit and to apply a second power to the lower electrode unit.

2. The apparatus of claim 1, wherein the at least one upper electrode unit comprises a plurality of upper electrode units arranged at the upper portion of the process chamber and the at least one lower electrode unit comprises a plurality of lower electrode units arranged to correspond to respective ones of the plurality of upper electrodes and provide a plurality of processing areas defined by spaces between respective ones of the plurality of upper electrode units and corresponding ones of the plurality of lower electrode units, wherein the apparatus is configured to perform the plurality of different processes in respective processing areas substantially independently from one another.

3. The apparatus of claim 2, wherein the gas supply unit comprises a plurality of the gas supply units configured to correspond to respective ones of the plurality of upper electrodes and respective ones of the processing areas, and the process gas comprise a plurality of process gases that are individually supplied to each of the processing areas through the gas supply unit corresponding to each of the processing areas.

4. The apparatus of claim 3, wherein the plurality of process gases are substantially confined to respective ones of the processing areas.

5. The apparatus of claim 2, wherein the processing areas are separated from one another by a variable barrier in the process chamber, wherein the variable barrier is configured to reduce the mixture of the process gases between each of the processing areas.

6. The apparatus of claim 5, wherein the variable barrier includes an air curtain and/or an inactive gas curtain.

7. The apparatus of claim 2, wherein the processing areas include a first process area configured to perform a first deposition process for forming a metal layer along a surface of a pattern on the substrate, a second process area configured to perform a second deposition process forming a metal nitride layer along the surface of the pattern, and a third process area configured to perform a nitration process for nitrating the metal layer and/or the metal nitride layer.

8. The apparatus of claim 7, wherein the first and the second deposition processes include a metal plasma process, a cyclic chemical vapor deposition (cyclic CVD) process, a pulsed nucleation layer (PNL) process and/or an atomic layer deposition (ALD) process, and/or the nitration process includes a nitrogen plasma process.

9. The apparatus of claim 7, wherein the metal layer includes a tungsten layer and the metal nitride layer includes a tungsten nitride layer.

10. The apparatus of claim 2, further comprising a transfer unit for transferring the substrate between the process areas in the process chamber.

11. The apparatus of claim 10, wherein the transfer unit includes a conveyor system and/or a transfer robot.

12. The apparatus of claim 1, wherein the plurality of different processes are sequentially performed in the process chamber.

13. The apparatus of claim 12, wherein the gas supply unit includes a plurality of gas reservoirs configured to store the process gases, a plurality of control valves configured to control an amount of the process gases discharged from each of the gas reservoirs and a supply pipe for supplying the process gases into the process chamber.

14. The apparatus of claim 13, wherein the gas reservoirs include a first reservoir in which a purge gas for cleaning the process chunkier is stored and second, third and fourth reservoirs in which a metal source gas, a nitrogen source gas and a hydrogen source gas for forming a metal layer along a surface of a pattern on the substrate are stored, respectively, and the supply pipe includes a plurality of connection pipe lines connected to the first, second, third and fourth reservoirs, respectively, and a common supply pipe line commonly connected to each of the connection pipe lines, wherein the process gases in each of the gas reservoirs are discharged through the corresponding connection pipe line and are supplied into the process chamber through the common supply pipe line.

15. The apparatus of claim 13, further comprising a central control unit (CCU) configured to control each of the control valves independently from one another in accordance with a sequential process order in the process chamber.

16. The apparatus of claim 1, wherein the first power source includes an electric power source configured to transform the process gases into process plasma and the second power source includes a bias power source configured to accelerate the process plasma onto the substrate.

17. The apparatus of claim 16, wherein the bias power source generates a direct bias and a radio frequency (RF) bias.

18. The apparatus of claim 1, wherein driving member includes a first driving shaft part having a linear shaft connected to the lower electrode unit and a bearing supporting the linear shaft and transferring the driving power to the linear shaft from the driving power source, and the driving power source includes an electrical motor.

19. The apparatus of claim 18, wherein the driving member farther includes a second driving shaft part connected to the upper electrode unit and configured to move the upper electrode unit to control a distance between the upper and lower electrode units in the process chamber.

20. The apparatus of claim 1, wherein the upper electrode unit includes a first electrode electrically connected to the upper electrode unit and mechanically connected to the gas supply unit and a second electrode coupled with a lower surface of the first electrode to provide a buffer space between the first and second electrodes and configured to store the process gases before supplying the process gases to the process chamber, and the lower electrode unit further includes a heating member for heating the substrate.

21. The apparatus of claim 1, wherein the substrate comprises a pattern having an insulation interlayer on a conductive layer and at least one contact hole penetrating the insulation interlayer.

22. A method of forming a semiconductor device, the method comprising:

depositing a metal layer in a contact hole on a substrate and nitratating a portion of the metal layer in single process chamber without a vacuum break.