Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Chao Ian
 2. Date of Event Requiring Statement (Month/Day/Year)
04/01/2007		 3. Issuer Name and Ticker or Trading Symbol
Cambridge Display Technology, Inc. [OLED]
(Last)
(First)
(Middle)
BUILDING 2020, CAMBOURNE BUSINESS PARK		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President, Commercial
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CAMBRIDGE, X0 cb236dw		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 82,563 (1)
D
 
Common Stock 31,158 (4)
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Options (Right to Buy)   (2) 07/21/2013 Common Stock 12,192 $ 27.6 D  
Employee Stock Options (Right to Buy)   (3) 01/03/2016 Common Stock 10,000 $ 8.21 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Chao Ian
BUILDING 2020
CAMBOURNE BUSINESS PARK
CAMBRIDGE, X0 cb236dw		       Vice President, Commercial  

Signatures

Andrew Fields, attorney-in-fact 04/13/2007
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Restricted Stock Units granted under the Cambridge Display Technology, Inc. 2004 Stock Incentive Plan. 2,563 shares will be issued on January 2, 2008 and 80,000 shares will be issued in five equal instalments during January to May, 2009.
(2) Options become vested and exercisable in four equal instalments on each of the six month, first, second and third anniversaries of the grant date of July 21, 2003.
(3) Options become vested and exercisable in equal annual instalments on each of the first three anniversaries of the grant date of January 3, 2006.
(4) Restricted Stock Units granted under the Cambridge Display Technology, Inc. Special Bonus Plan. 7,160 shares were issued on December 26, 2006. The remaining 23,998 will be issued in equal instalments on December 26, 2007 and December 26, 2008.

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