Patent Number: 
Section: claims

1. A Tilted Channel Implant (TCI) system for performing TCI operations on supplied production samples having a gate structure of directly or indirectly measured length and one or more sidewalls of directly or indirectly measured thickness, said TCI system comprising: (a) first error determining means for determining an amount of error in each production sample between the measured sidewall thickness and a pre-defined, target sidewall thickness; and  (b) energy adjustment means for adjusting TCI energy in response to the amount of error determined by said first error determining means, where said adjusting of TCI energy at least partially counters deviation in depth of TCI dopants due to said sidewall thickness error. 2. The Tilted Channel Implant (TCI) system of  claim 1  and further comprising: claim 1 (c) second error determining means for determining an amount of error in each production sample between the measured gate length and a pre-defined, target gate length; and  (d) dosage adjustment means for adjusting TCI dosage in response to the amount of error determined by said second error determining means, where said adjusting of TCI dosage at least partially counters deviation in lateral distribution of TCI dopants due to said gate length error. 3. The Tilted Channel Implant (TCI) system of  claim 2  wherein: claim 2 (a.1) said measured sidewall thickness is defined at least in part by measuring a pre-trim film thickness of a material that is deposited to define said one or more sidewalls. 4. The Tilted Channel Implant (TCI) system of  claim 2  wherein: claim 2 (a.1) said measured sidewall thickness is defined at least in part by measuring a post-trim film thickness of a material that is deposited and thereafter trimmed to define said one or more sidewalls. 5. The Tilted Channel Implant (TCI) system of  claim 2  wherein said energy adjustment means includes: claim 2 (b.1) energy adjustment interpolating means for interpolating approximate energy adjustments based on two or more empirically established energy adjustments. 6. The Tilted Channel Implant (TCI) system of  claim 5  wherein said energy adjustment interpolating means includes: claim 5 Energy a =E 0 *(1 +xcex2*e Sw /S wT )  wherein E 0  is a prespecified amount of implant energy used when sidewall thickness error e Sw  is zero, wherein said multiplying factor, xcex2 may either be a constant or a function of a specified windowing range of the normalized error, e Sw /S wT , and where S wT  is said target sidewall thickness. (b.1a) linear or quasi-linear energy adjustment interpolating means for interpolating approximate energy adjustments in accordance with a formula of the form: 7. The Tilted Channel Implant (TCI) system of  claim 6  wherein said multiplying factor, xcex2 is defined as one or more values selected from the range, 0.05 xe2x89xa6xcex2xe2x89xa60.15 where the selected value depends on the sign of e Sw /S wT . claim 6 8. The Tilted Channel Implant (TCI) system of  claim 5  wherein said dosage adjustment means includes: claim 5 (d.1) dosage adjustment interpolating means for interpolating approximate dosage adjustments based on two or more empirically-established implant dosage adjustments. 9. The Tilted Channel Implant (TCI) system of  claim 8  wherein said dosage adjustment interpolating means includes: claim 8 Dose a =Dose 0 *(1+xcex1( L 2T xe2x88x92L 2M )/ L 2T )  wherein Dose 0  is a prespecified amount of implant dosage used when gate length error L 2T xe2x88x92L 2M  is zero, wherein said second multiplying factor, xcex1 may either be a constant or a function of a specified windowing range of the normalized error, (L 2T xe2x88x92L 2M )/L 2T , where L 2T  is said target gate length and where L 2M  is said measured gate length. (b.1a) linear or quasi-linear energy adjustment interpolating means for interpolating approximate energy adjustments in accordance with a formula of the form: 10. The Tilted Channel Implant (TCI) system of  claim 9  wherein said second multiplying factor, xcex1 is defined as one or more values selected from the range, 0.05xe2x89xa6xcex1xe2x89xa60.15 where the selected value or values for may depend on the sign and/or windowed magnitude of (L 2T xe2x88x92L 2M )/L 2T . claim 9 11. The Tilted Channel Implant (TCI) system of  claim 1  wherein said energy adjustment means includes: claim 1 (b.1) energy adjustment interpolating means for interpolating approximate energy adjustments based on two or more empirically established energy adjustments. 12. The Tilted Channel Implant (TCI) system of  claim 11  wherein said energy adjustment interpolating means includes: claim 11 Energy a =E 0 *(1 +xcex2*e Sw /S wT )  wherein E 0  is a prespecified amount of implant energy used when sidewall thickness error e Sw  is zero, wherein said multiplying factor, xcex2 may either be a constant or a function of a specified windowing range of the normalized error, e Sw /S wT , and where S wT  is said target sidewall thickness. (b.1a) linear or quasi-linear energy adjustment interpolating means for interpolating approximate energy adjustments in accordance with a formula of the form: 13. A machine-implemented method for performing Tilted Channel Implant (TCI) operations on supplied production samples having a gate structure of directly or indirectly measured length and one or more sidewalls of directly or indirectly measured thickness, said method comprising the steps of: (a) first determining an amount of first error in one or more production samples between the measured sidewall thickness and a pre-defined, target sidewall thickness; and  (b) adjusting TCI energy in response to the amount of first error determined by said first determining step, where said adjusting of TCI energy at least partially counters deviation in depth of TCI dopants due to said sidewall thickness error. 14. The machine-implemented TCI method of  claim 13  and further comprising: claim 13 (c) second determining an amount of respective second error in said one or more production samples between the measured gate length and a pre-defined, target gate length; and  (d) adjusting TCI dosage in response to the amount of second error determined by said second error determining step, where said adjusting of TCI dosage at least partially counters deviation in lateral distribution of TCI dopants due to said gate length error. 15. The machine-implemented TCI method of  claim 14  wherein: claim 14 (a.1) said measured sidewall thickness is defined at least in part by measuring a pre-trim film thickness of a material that is deposited to define said one or more sidewalls. 16. The machine-implemented TCI method of  claim 14  wherein: claim 14 (a.1) said measured sidewall thickness is defined at least in part by measuring a post-trim film thickness of a material that is deposited and thereafter trimmed to define said one or more sidewalls. 17. The machine-implemented TCI method of  claim 14  wherein said energy adjusting step includes: claim 14 (b.1) interpolating approximate energy adjustments based on two or more empirically established energy adjustments. 18. The machine-implemented TCI method of  claim 17  wherein said energy adjustment interpolating step includes: claim 17 Energy a =E 0 *(1 +xcex2*e Sw /S wT )  wherein E 0  is a prespecified amount of implant energy used when sidewall thickness error e Sw  is zero, wherein said multiplying factor, xcex2 may either be a constant or a function of a specified windowing range of the normalized error, e Sw /S wT , and where S wT  is said target sidewall thickness. (b.1a) using linear or quasi-linear energy adjustment interpolation for interpolating approximate energy adjustments in accordance with a formula of the form: 19. The machine-implemented TCI method of  claim 18  wherein said multiplying factor, xcex2 is defined as one or more values selected from the range, 0.05xe2x89xa6xcex2xe2x89xa60.15 where the selected value depends on the sign of e Sw /S wT . claim 18 20. The machine-implemented TCI method of  claim 14  wherein said dosage adjusting step includes: claim 14 (d.1) using dosage adjustment interpolation for interpolating approximate dosage adjustments based on two or more empirically established implant dosage adjustments. 21. The machine-implemented TCI method of  claim 20  wherein said dosage adjustment interpolating step includes: claim 20 Dose a =Dose 0 *(1+xcex1( L 2T xe2x88x92L 2M )/ L 2T )  wherein Dose 0  is a prespecified amount of implant dosage used when gate length error L 2T xe2x88x92L 2M  is zero, wherein said second multiplying factor, xcex1 may either be a constant or a function of a specified windowing range of the normalized error, (L 2T xe2x88x92L 2M )/L 2T , where L 2T  is said target gate length and where L 2M  is said measured gate length. (b.1a) using linear or quasi-linear energy adjustment interpolation for interpolating approximate energy adjustments in accordance with a formula of the form: 22. The machine-implemented TCI method of  claim 21  wherein said second multiplying factor, xcex1 is defined as one or more values selected from the range, 0.05xe2x89xa6xcex1xe2x89xa60.15 where the selected value or values for may depend on the sign and/or windowed magnitude of (L 2T xe2x88x92L 2M )/L 2T . claim 21