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 *
  Black Michael Peter
 2. Date of Event Requiring Statement (Month/Day/Year)
07/03/2006		 3. Issuer Name and Ticker or Trading Symbol
Cambridge Display Technology, Inc. [OLED]
(Last)
(First)
(Middle)
C/O CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, 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, Finance
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CAMBRIDGE, X0 CB3 6DW		 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 12,561 (3)
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)   (1) 08/01/2014 Common Stock 7,802 $ 27.6 D  
Employee Stock Options (Right to Buy)   (2) 01/01/2013 Common Stock 5,852 $ 27.6 D  
Employee Stock Options (Right to Buy)   (4) 12/14/2014 Common Stock 4,832 $ 12 D  
Employee Stock Options (Right to Buy)   (5) 12/22/2014 Common Stock 5,168 $ 11.18 D  
Employee Stock Options (Right to Buy)   (6) 06/03/2005 Common Stock 7,500 $ 8.55 D  
Employee Stock Options (Right to Buy)   (7) 01/03/2016 Common Stock 10,000 $ 8.21 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Black Michael Peter
C/O CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
2020 CAMBOURNE BUSINESS PARK
CAMBRIDGE, X0 CB3 6DW		       Vice-President, Finance  

Signatures

MIchael Black 07/14/2006
**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) 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 August 1, 2004
(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 January 1, 2003
(3) Restricted Stock Units granted under the Cambridge Display Technology, Inc. Special Bonus Plan
(4) Options become vested and exercisable in equal annual installments on each of the first three anniversaries of the grant date of December 14, 2004
(5) Options become vested and exercisable in equal annual installments on each of the first three anniversaries of the grant date of December 22, 2004
(6) Options become vested and exercisable in equal annual installments on each of the first three anniversaries of the grant date of June 3, 2005
(7) Options become vested and exercisable in equal annual installments on each of the first three anniversaries of the grant date of January 3, 2006

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