Exhibit 4.50**English language summary of Chinese language NT$3.6 Billion Syndicated Loan Agreement dated August18, 2006 between Winstek Semiconductor Corporation and Taishin Bank**Borrower : Winstek Semiconductor CorporationLenders :1. Taishin International Bank (Sponsor bank)2. Bank of Overseas Chinese3. Central Trust of China4. The Shanghai Commercial & Savings Bank Ltd.5. Cathay United Bank6. Bank of Kaohsiung7. Chang Hwa Bank8. Taipei Fubon Bank9. Shin Kong Bank10. Sunny Bank11. Far Eastern International Bank12. Entie Commercial Bank13. Land Bank14. Taiwan Business Bank**Summary of the main articles**1. Total loan principal available for draw down : NT$3,600 million (Consists of item A loan :NT$2,400 million, and Item B loan : NT$1,200 million);  (Item B loan consists of B-1 loan and B-2 loan. No sub-limit between B-1 and B-2)     2. Purpose of loan : Item A loan : For fixed assets purchase    Item B loan : For refinancing or/and working capital     3. Loan term : Item A loan : 6 years after first draw down date    Item B loan : 4 years after first draw down date    (first draw down date must be within six months from contract date)     4. Draw down period : Item A loan : 2 years after first draw down date    Item B loan : 1.5 years after first draw down date
 

 
       5. Principal repayment : Item A loan : Repayment in 16 equal instalmentsevery 3 months commencing 27 months after first draw down date.    Item B loan : Repayment in 9 instalmentscommencing 24 months after firstdraw down date with the first 8 instalments repaying 11% of theprincipal and the last instalment repaying 12% of the principal.     6. Interest rate : Item A loan : 90 day commercial paper interest rate + 0.55%    Item B-1 loan : 90-day commercial paper interest rate + 0.55%    Item B-2 loan : 90-day commercial paper interest rate + 0.65%  The rate per annum determined on the basis of the fixing rate on 90-day commercial papers inTaiwan’s primary commercial paper market as appearing on Page 51328 of the Reuters Teleratescreen at or about 11:30 A.M. on the Business Day prior to the commencement of such InterestPeriod. 7. Interest repayment : Quarterly repayment 8. Commitment fee : if total draw down amount is below 60% of total loan principal after drawdown period, borrower to pay : (60% of total loan principal — total draw down amount)multiplied by 0.2%. 9. Penalty interest rate for delayed repayment of principal or delayed payment of interest : (a) “penalty payment” : item (6) interest rate plus 2%, subject to: (b) if “penalty payment” is paid within six months : “penalty payment” multipliedby 10% (c) if “penalty payment” is paid after six months : “penalty payment” multiplied by20%10. Advanced repayment of loan : (a) Must provide notice to sponsor bank 10 working days before principal repaymentdate (b) Minimum repayment of loan must be NT$50 million or a multiple thereof11. Financial covenants : (a) Current ratio must not be lower than 100%; (i) Current ratio = Current assets divided by Current liabilities; (b) Debt ratio must not be higher than 120%; (i) Debt ratio = (Debt + Contingencies) divided by Tangible Net Worth; (ii) Contingencies = Outstanding guarantees granted by the Borrower; (iii) Tangible Net Worth = Shareholders’ Equity less intangible assets and anydeferred expenditure. (c) Interest Coverage ratio must not be lower than 200%; (i) Interest Coverage ratio = (Net Profit before Tax + Interest Expense +Depreciation + Amortization) divided by Interest Expense. (d) Tangible Net Worth must not be less than NT$2.8 billion;
 

 
     12. Security : Item A loan : The loan is secured by a pledge of the fixed assets purchased withthe loan proceeds;    Item B-1 loan : The loan is secured by a pledge of Borrower’s existing fixed assets;    Item B-2 loan : No security required.Summary of the articles omitted(1) Condition precedent to the drawing of loan(2) Rights and obligations of the borrower(3) Rights and obligations of the lender(4) Dispute settlement(5) Miscellaneous(6) Notes