EX-24.1

EXHIBIT 24.1

LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

       Know all by these presents, that the undersigned hereby makes, constitutes and appoints Gil C. Tily
and Jerry C. Allison (either of whom may act individually) as the undersigned's true and lawful attorney-
in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:

(1)    prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5 (including any amendments thereto)
with respect to the securities of Amkor Technology, Inc., a Delaware corporation (the "Company"), with the
United States Securities and Exchange Commission, any national securities exchanges and the Company, as
considered necessary or advisable under Section 16(a) of the Securities Exchange Act of 1934 and the rules
and regulations promulgated thereunder, as amended from time to time (the "Exchange Act");

(2)    seek or obtain, as the undersigned's representative and on the undersigned's behalf, information on
transactions in the Company's securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such person to release any such
information to the undersigned and approves and ratifies any such release of information; and

(3)    perform any and all other acts which in the discretion of such attorney-in-fact are necessary or
desirable for and on behalf of the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1)    this Power of Attorney authorizes, but does not require, such attorney-in-fact to act in their
discretion on information provided to such attorney-in-fact without independent verification of such
information;

(2)    any documents prepared and/or executed by such attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney will be in such form and will contain such information and disclosure as such
attorney-in-fact, in his or her discretion, deems necessary or desirable;

(3)    neither the Company nor such attorney-in-fact assumes (i) any liability for the undersigned's
responsibility to comply with the requirements of the Exchange Act, (ii) any liability of the undersigned for
any failure to comply with such requirements, or (iii) any obligation or liability of the undersigned for
profit disgorgement under Section 16(b) of the Exchange Act; and

(4)    this Power of Attorney does not relieve the undersigned from responsibility for compliance with the
undersigned's obligations under the Exchange Act, including without limitation the reporting requirements
under Section 16 of the Exchange Act.

       The undersigned hereby gives and grants the foregoing attorney-in-fact full power and authority to do
and perform all and every act and thing whatsoever requisite, necessary or appropriate to be done in and
about the foregoing matters as fully to all intents and purposes as the undersigned might or could do if
present, hereby ratifying all that such attorney-in-fact of, for and on behalf of the undersigned, shall
lawfully do or cause to be done by virtue of this Limited Power of Attorney.

       This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a
signed writing delivered to such attorney-in-fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 7th day
of November, 2007.


(Signed Copy on File)

James J. Kim

EX-24.2

EXHIBIT 24.2

LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

       Know all by these presents, that the undersigned hereby makes, constitutes and appoints Gil C. Tily
and Jerry C. Allison (either of whom may act individually) as the undersigned's true and lawful attorney-
in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:

(1)    prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5 (including any amendments thereto)
with respect to the securities of Amkor Technology, Inc., a Delaware corporation (the "Company"), with the
United States Securities and Exchange Commission, any national securities exchanges and the Company, as
considered necessary or advisable under Section 16(a) of the Securities Exchange Act of 1934 and the rules
and regulations promulgated thereunder, as amended from time to time (the "Exchange Act");

(2)    seek or obtain, as the undersigned's representative and on the undersigned's behalf, information on
transactions in the Company's securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such person to release any such
information to the undersigned and approves and ratifies any such release of information; and

(3)    perform any and all other acts which in the discretion of such attorney-in-fact are necessary or
desirable for and on behalf of the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1)    this Power of Attorney authorizes, but does not require, such attorney-in-fact to act in their
discretion on information provided to such attorney-in-fact without independent verification of such
information;

(2)    any documents prepared and/or executed by such attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney will be in such form and will contain such information and disclosure as such
attorney-in-fact, in his or her discretion, deems necessary or desirable;

(3)    neither the Company nor such attorney-in-fact assumes (i) any liability for the undersigned's
responsibility to comply with the requirements of the Exchange Act, (ii) any liability of the undersigned for
any failure to comply with such requirements, or (iii) any obligation or liability of the undersigned for
profit disgorgement under Section 16(b) of the Exchange Act; and

(4)    this Power of Attorney does not relieve the undersigned from responsibility for compliance with the
undersigned's obligations under the Exchange Act, including without limitation the reporting requirements
under Section 16 of the Exchange Act.

       The undersigned hereby gives and grants the foregoing attorney-in-fact full power and authority to do
and perform all and every act and thing whatsoever requisite, necessary or appropriate to be done in and
about the foregoing matters as fully to all intents and purposes as the undersigned might or could do if
present, hereby ratifying all that such attorney-in-fact of, for and on behalf of the undersigned, shall
lawfully do or cause to be done by virtue of this Limited Power of Attorney.

       This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a
signed writing delivered to such attorney-in-fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 6th day
of November, 2007.


(Signed Copy on File)

John T. Kim

EX-24.3

EXHIBIT 24.3

LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

       Know all by these presents, that the undersigned hereby makes, constitutes and appoints Gil C. Tily
and Jerry C. Allison (either of whom may act individually) as the undersigned's true and lawful attorney-
in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:

(1)    prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5 (including any amendments thereto)
with respect to the securities of Amkor Technology, Inc., a Delaware corporation (the "Company"), with the
United States Securities and Exchange Commission, any national securities exchanges and the Company, as
considered necessary or advisable under Section 16(a) of the Securities Exchange Act of 1934 and the rules
and regulations promulgated thereunder, as amended from time to time (the "Exchange Act");

(2)    seek or obtain, as the undersigned's representative and on the undersigned's behalf, information on
transactions in the Company's securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such person to release any such
information to the undersigned and approves and ratifies any such release of information; and

(3)    perform any and all other acts which in the discretion of such attorney-in-fact are necessary or
desirable for and on behalf of the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1)    this Power of Attorney authorizes, but does not require, such attorney-in-fact to act in their
discretion on information provided to such attorney-in-fact without independent verification of such
information;

(2)    any documents prepared and/or executed by such attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney will be in such form and will contain such information and disclosure as such
attorney-in-fact, in his or her discretion, deems necessary or desirable;

(3)    neither the Company nor such attorney-in-fact assumes (i) any liability for the undersigned's
responsibility to comply with the requirements of the Exchange Act, (ii) any liability of the undersigned for
any failure to comply with such requirements, or (iii) any obligation or liability of the undersigned for
profit disgorgement under Section 16(b) of the Exchange Act; and

(4)    this Power of Attorney does not relieve the undersigned from responsibility for compliance with the
undersigned's obligations under the Exchange Act, including without limitation the reporting requirements
under Section 16 of the Exchange Act.

       The undersigned hereby gives and grants the foregoing attorney-in-fact full power and authority to do
and perform all and every act and thing whatsoever requisite, necessary or appropriate to be done in and
about the foregoing matters as fully to all intents and purposes as the undersigned might or could do if
present, hereby ratifying all that such attorney-in-fact of, for and on behalf of the undersigned, shall
lawfully do or cause to be done by virtue of this Limited Power of Attorney.

       This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a
signed writing delivered to such attorney-in-fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 12th day
of February, 2008.


(Signed Copy On File)

David D. Kim

EX-24.4

EXHIBIT 24.4

LIMITED POWER OF ATTORNEY FOR
SECTION 16 REPORTING OBLIGATIONS

       Know all by these presents, that the undersigned hereby makes, constitutes and appoints Gil C. Tily
and Jerry C. Allison (either of whom may act individually) as the undersigned's true and lawful attorney-
in-fact, with full power and authority as hereinafter described on behalf of and in the name, place and
stead of the undersigned to:

(1)    prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5 (including any amendments thereto)
with respect to the securities of Amkor Technology, Inc., a Delaware corporation (the "Company"), with the
United States Securities and Exchange Commission, any national securities exchanges and the Company, as
considered necessary or advisable under Section 16(a) of the Securities Exchange Act of 1934 and the rules
and regulations promulgated thereunder, as amended from time to time (the "Exchange Act");

(2)    seek or obtain, as the undersigned's representative and on the undersigned's behalf, information on
transactions in the Company's securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such person to release any such
information to the undersigned and approves and ratifies any such release of information; and

(3)    perform any and all other acts which in the discretion of such attorney-in-fact are necessary or
desirable for and on behalf of the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1)    this Power of Attorney authorizes, but does not require, such attorney-in-fact to act in their
discretion on information provided to such attorney-in-fact without independent verification of such
information;

(2)    any documents prepared and/or executed by such attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney will be in such form and will contain such information and disclosure as such
attorney-in-fact, in his or her discretion, deems necessary or desirable;

(3)    neither the Company nor such attorney-in-fact assumes (i) any liability for the undersigned's
responsibility to comply with the requirements of the Exchange Act, (ii) any liability of the undersigned for
any failure to comply with such requirements, or (iii) any obligation or liability of the undersigned for
profit disgorgement under Section 16(b) of the Exchange Act; and

(4)    this Power of Attorney does not relieve the undersigned from responsibility for compliance with the
undersigned's obligations under the Exchange Act, including without limitation the reporting requirements
under Section 16 of the Exchange Act.

       The undersigned hereby gives and grants the foregoing attorney-in-fact full power and authority to do
and perform all and every act and thing whatsoever requisite, necessary or appropriate to be done in and
about the foregoing matters as fully to all intents and purposes as the undersigned might or could do if
present, hereby ratifying all that such attorney-in-fact of, for and on behalf of the undersigned, shall
lawfully do or cause to be done by virtue of this Limited Power of Attorney.

       This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a
signed writing delivered to such attorney-in-fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 12th day
of February, 2008.


(Signed Copy On File)

Susan Y. Kim

EX-24.5

EXHIBIT 24.5

LIMITED POWER OF ATTORNEY

       Know all by these presents, that the undersigned hereby makes, constitutes and appoints Jerry Allison,
Gil C. Tily and Christie B. Tillapaugh (any of whom may act individually) as the true and lawful attorney-
in-fact of the undersigned, with full power and authority as hereinafter described on behalf of and in the
name, place and stead of the undersigned to:

(1)    prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5 (including any amendments thereto)
and any Schedule 13D (including any amendments thereto) with respect to the securities of Amkor Technology,
Inc., a Delaware corporation (the "Company"), with the United States Securities and Exchange Commission, any
national securities exchanges and the Company, as considered necessary or advisable under Section 16(a) of
the Securities Exchange Act of 1934 and the rules and regulations promulgated thereunder, as amended from
time to time (the "Exchange Act"), including obtaining any filing codes or reissuance of existing codes, if
necessary, in connection therewith;

(2)    seek or obtain, as the undersigned's representative and on the undersigned's behalf, information on
transactions in the Company's securities from any third party, including brokers, employee benefit plan
administrators and trustees, and the undersigned hereby authorizes any such person to release any such
information to such attorney-in-fact and approves and ratifies any such release of information; and

(3)    perform any and all other acts which in the discretion of such attorney-in-fact are necessary or
desirable for and on behalf of the undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1)    this Power of Attorney authorizes, but does not require, such attorney-in-fact to act in their
discretion on information provided to such attorney-in-fact without independent verification of such
information;

(2)    any documents prepared and/or executed by such attorney-in-fact on behalf of the undersigned pursuant
to this Power of Attorney will be in such form and will contain such information and disclosure as such
attorney-in-fact, in his or her discretion, deems necessary or desirable;

(3)    neither the Company nor such attorney-in-fact assumes (i) any liability for the undersigned's
responsibility to comply with the requirements of the Exchange Act, (ii) any liability of the undersigned for
any failure to comply with such requirements, or (iii) any obligation or liability of the undersigned for
profit disgorgement under Section 16(b) of the Exchange Act; and

(4)    this Power of Attorney does not relieve the undersigned from responsibility for compliance with the
undersigned's obligations under the Exchange Act, including without limitation the reporting requirements
under Section 16 of the Exchange Act.

(5)    this Power of Attorney supersedes and replaces any prior power of attorney executed by the undersigned
for this purpose.

       The undersigned hereby gives and grants the foregoing attorney-in-fact full power and authority to do
and perform all and every act and thing whatsoever requisite, necessary or appropriate to be done in and about
the foregoing matters as fully to all intents and purposes as the undersigned might or could do if present,
hereby ratifying all that such attorney-in-fact shall lawfully do or cause to be done of, for and on behalf of
the undersigned by virtue of this Limited Power of Attorney.

       This Power of Attorney shall remain in full force and effect until revoked by the undersigned in a
signed writing delivered to such attorney-in-fact.

       IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 6th day
of January, 2010.


Signature below:

Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94
Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92
Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01
Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01
Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03
Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05

       By:  Signed Copy on File

            John T. Kim, as Trustee of each of the trusts listed above.

EX-99.1

Exhibit 99.1
 
The reporting persons may be deemed a member of a group.  A Schedule 13D was filed by James J.
Kim and those members of the reporting group who then constituted the group on November 28, 2005,
as amended by Amendment No. 1 filed with the Securities and Exchange Commission (the "Commission")
on April 4, 2008, Amendment No. 2 filed with the Commission on March 19, 2009, Amendment No. 3
filed with the Commission on April 16, 2009 and Amendment No. 4 filed with the Commission on
February 5, 2010 as further amended from time to time (the "Schedule 13D"). Those individuals and
entities listed in the Schedule 13D, including the filers of this Form 4 and other filers who
filed Forms 3 and/or 4 since the last Schedule 13D was filed who so indicated, may be deemed to be
members of a group (the "Group") who each exercise voting or investment power with respect to
shares of Amkor Technology, Inc.'s (the "Issuer") Common Stock in concert with other members of the
Group. 
The Group may be deemed to beneficially own more than 10% of the outstanding voting
securities of the Issuer. Each reporting person states that the filing of this Form 4 Report shall
not be deemed an admission that the reporting person is the beneficial owner of the reported
securities owned by the other members of the Group, for the purpose of Section 16 of the Securities
Exchange Act of 1934, as amended, or for any other purpose.

EX-99.2

Exhibit 99.2 - Relationship of Reporting Persons to Issuer

David D. Kim (10% Owner)

James J. Kim (10% Owner and Director)

John T. Kim (10% Owner, Director)

Susan Y. Kim (10% Owner)

Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92 (Other, See Exhibit 99.1)

Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94 (Other, See Exhibit 99.1)

Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01 (Other, See Exhibit 99.1)

Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated 10/15/01 (Other, See Exhibit 99.1)

Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03 (Other, See Exhibit 99.1)

Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05 (Other, See Exhibit 99.1)

EX-99.3

Exhibit 99.3 - Summary of Direct and Indirect Beneficial Ownership
 
 
           James J. Kim   John T. Kim   Susan Y. Kim   David D. Kim   Trusts 1 to 5   Trust 6
           ------------   -----------   ------------   ------------   -------------  ----------
DIRECT       19,015,737             0              0              0       1,345,113   1,335,113
OWNERSHIP
 
 
INDIRECT
OWNERSHIP
Trust 1                   
;  1,345,113      1,345,113
(as trustee)
 
Trust 2                     1,345,113      1,345,113
(as trustee)
 
Trust 3                     1,345,113      1,345,113
(as trustee)
 
Trust 4                     1,345,113      1,345,113
(as trustee)
 
Trust 5                     1,345,113      1,345,113
(as trustee)
 
Trust 6            &nbs
p;        1,335,113                     1,335,113
(as trustee)
 
Other Trusts  1,930,555    37,027,575     31,073,130     22,010,575
(as trustee)
and family
LP (as member
of GP)
 
Total         1,930,555    45,088,253     37,798,695     23,345,688               0           0
Indirect
Ownership:
 
 
*TOTAL       20,946,292    45,088,253     37,798,695     23,345,688       1,345,113   1,335,113
(DIRECT AND
INDIRECT):
 
 
Trusts for Reported Tra
nsactions:
 
(1) Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello dated 12/24/92.
(2) Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94.
(3) Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello dated 10/15/01.
(4) Irrevocable Deed of Trust of James J. Kim for Allison Lee Kim dated 10/15/01.
(5) Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated 11/17/03.
(6) Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D. Kim dated 11/11/05.
 
*   Each reporting person disclaims beneficial ownership of these securities except to the extent
of his or her pecuniary interest therein, and this report shall not be deemed an admission that
the reporting person is the beneficial ownership of such securities, except to the extent of his
or her pecuniary interest therein, for purposes of the Securities Exchange Act of 1934, as amended,
or for any other purpose.

EX-99.4

Exhibit 99.4 - Joint Filer Information
 
Names of Joint Filers:
 
(1)     James J. Kim
(2)     John T. Kim as co-trustee of the Irrevocable Deed of Trust of James J.
     Kim for Alexandra Kim Panichello dated 12/24/92, the Irrevocable Deed of
     Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94, the
     Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello
     dated 10/15/01, the Irrevocable Deed of Trust of James J. Kim for
     Allyson Lee Kim dated 10/15/01, the Irrevocable Deed of Trust of James J.
     Kim FBO Jason Lee Kim dated 11/17/03 and the Irrevocable Deed of Trust of
     James J. Kim f/b/o Children of David D. Kim dated 11/11/05.
(3)     Susan Y. Kim as co-trustee of the Irrevocable Deed of Trust of James
     J. Kim for Alexandra Kim Panichello dated 12/
24/92, the Irrevocable Deed
     of Trust of James J. Kim for Jacqueline Mary Panichello dated 10/3/94,
     the Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello
     dated 10/15/01, the Irrevocable Deed of Trust of James J. Kim for Allyson
     Lee Kim dated 10/15/01, and the Irrevocable Deed of Trust of James J. Kim
     FBO Jason Lee Kim dated 11/17/03.
(4)     Irrevocable Deed of Trust of James J. Kim for Alexandra Kim Panichello
     dated 12/24/92.
(5)     Irrevocable Deed of Trust of James J. Kim for Jacqueline Mary
     Panichello dated 10/3/94.
(6)     Irrevocable Deed of Trust of James J. Kim for Dylan James Panichello
     dated 10/15/01.
(7)     Irrevocable Deed of Trust of James J. Kim for Allyson Lee Kim dated
     10/15/01.
(8)  &n
bsp;  Irrevocable Deed of Trust of James J. Kim FBO Jason Lee Kim dated
     11/17/03.
(9)     Irrevocable Deed of Trust of James J. Kim f/b/o Children of David D.
     Kim dated 11/11/05.
(10)    David D. Kim, as co-trustee of the Irrevocable Deed of Trust of James
     J. Kim f/b/o Children of David D. Kim dated 11/11/05.
 
     Address: 1900 South Price Road, Chandler, AZ 85248
 
     Designated Filer: James J. Kim
 
     Issuer & Ticker Symbol: Amkor Technology, Inc. (AMKR) (Nasdaq Global
                             Select Market)
 
     Date of Event Requiring Statement: January 19, 2011
 
 
Signature:
 
/s/ Christie B. Tillapaugh, as attorney in fact for the undersigned January 20
, 2011
 
Christie B. Tillapaugh, as Attorney-in-Fact for John T. Kim, Susan Y. Kim and David
D. Kim in his or her capacity as trustee of the trusts listed above
 
 
Signature:
 
/s/ Jerry Allison, as attorney in fact January 20, 2011
 
Jerry Allison, as Attorney-in-Fact for James J. Kim, Susan Y. Kim, David D. Kim and
John T. Kim in his or her individual capacities