Semiconductor intra-field dose correction
View Patent ↗A system and method are provided for automatic dose-correction recipe generation, the system including a dose-correction recipe generator, a reticle data unit in signal communication with the recipe generator, a slit data unit in signal communication with the recipe generator, a process data unit in signal communication with the recipe generator, a wafer data unit in signal communication with the recipe generator, a control unit in signal communication with the recipe generator, and an output unit or a storage unit in signal communication with the control unit; and the method including receiving a current reticle data set and a previous reticle data set, receiving a current slit data set and a previous slit data set, receiving a process condition, receiving a wafer condition, automatically generating a dose-correction recipe in accordance with the received reticle, slit, process and wafer information, and controlling a dose in accordance with the generated recipe.
1. An automatic dose-correction recipe generation system comprising:
a memory storing an application program; and
a central processing unit configured to execute the application program,
wherein the application program is configured to generate a dose-correction recipe to adjust a dose based on reticle offset information of a mask for a semiconductor and slit uniformity information of a scanner.
2. The system of claim 1 wherein the reticle offset information is derived from subtracting current reticle data of the mask from previous reticle data of the mask.
3. The system of claim 1 wherein the slit uniformity information is derived from subtracting current slit data of the scanner from previous slit data of the scanner.
4. The system of claim 3 wherein the current slit data corresponds to a current condition of a slit of the scanner and the previous slit data corresponds to a previous condition of the slit.
5. The system of claim 1 wherein the recipe is further based on at least one of resist conditions, process conditions, or mask error enhancement factor conditions.
6. The system of claim 1 wherein the recipe is further based on topography information of a wafer of the semiconductor.
7. The system of claim 1 wherein the application program is configured to output a detected critical dimension uniformity.
8. The system of claim 1 , wherein the recipe is based on a combination of the reticle offset information and the slit uniformity information.
9. The system of claim 1 , wherein the dose is used to compensate for a non-uniformity resulting from mask processes and exposure processes on the scanner.
10. The system of claim 6 , wherein the recipe is based on a difference between new topography information of the wafer and old topography information of the wafer.
11. The system of claim 2 , further comprising a second application program to derive the reticle offset information by performing the subtracting.
12. The system of claim 3 , further comprising a second application program to derive the slit uniformity information by performing the subtracting.
13. An automatic dose-correction recipe generation system comprising:
a memory storing an application program; and
a central processing unit configured to execute the application program,
wherein the application program is configured to generate a dose-correction recipe to adjust a dose based on i) a difference between current reticle data of a mask for a semiconductor from previous reticle data of the mask, ii) a difference between current slit data of a scanner and previous slit data of the scanner, and iii) a difference between current topographical information for a wafer of the semiconductor and previous topographical information of the wafer.
14. The system of claim 13 , wherein the dose is used to compensate for a non-uniformity resulting from mask processes and exposure processes on the scanner.
15. The system of claim 14 , wherein the application program is configured to output a detected critical dimension uniformity.