AU Optronics Corp.
First Quarter 2013 Results Investor Conference

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Apr 30, 2013

Safe Harbor Notice

[]   The statements included in this presentation that are not historical in
     nature are "forward-looking statements" within the meaning of Section 27A
     of the United States Securities Act of 1933 and Section 21E of the United
     States Securities Exchange Act of 1934. These forward-looking statements,
     which may include statements regarding AU Optronics' future results of
     operations, financial condition or business prospects, are subject to
     significant risks and uncertainties and are based on AU Optronics' current
     expectations.

[]   Actual results may differ materially from those expressed or implied in
     these forward-looking statements for a variety of reasons, including, among
     other things: the cyclical nature of our industry; our dependence on
     introducing new products on a timely basis; our dependence on growth in the
     demand for our products; our ability to compete effectively; our ability to
     successfully expand our capacity; our dependence on key personnel; general
     economic and political conditions, including those related to the TFT-LCD
     industry; possible disruptions in commercial activities caused by natural
     and human-induced disasters, including terrorist activity and armed
     conflict; and fluctuations in foreign currency exchange rates.

[]   Beginning on January 1, 2013, we have adopted the International Financial
     Reporting Standards as issued by the International Accounting Standards
     Board ("IFRS") to the extent endorsed by the ROC Financial Supervisory
     Commission ("FSC") ("Taiwan IFRS") for reporting our annual and interim
     consolidated financial statements in the ROC in accordance with the
     requirements of the FSC. All financial information contained herewithin is
     presented in conformity with Taiwan IFRS. Readers should be cautioned that
     Taiwan IFRS differs in many material respects from accounting principles
     generally accepted in the Republic of China ("ROC GAAP"), the United States
     of America ("US GAAP"), and IFRS including to the extent that any new or
     amended standards or interpretations applicable under IFRS may not be
     timely endorsed by the FSC. We have historically presented our consolidated
     financial statements in accordance with ROC GAAP, including our
     consolidated financial statements for the year ended December 31, 2012.
     Consequently, the selected comparison financial information to be included
     in our quarterly earning releases in 2013 may differ materially from those
     released historically.

[]   Our release of financial forecasts and forward-looking statements at any
     particular time does not create any duty of disclosure beyond that which is
     imposed by law, and we expressly disclaim any obligation to publicly update
     or revise any forecasts or forward-looking statements, whether as a result
     of new information, future events or otherwise.

[]   Additional information as to these and other factors that may cause actual
     results to differ materially from AU Optronics' forward-looking statements
     or some of the major differences between ROC GAAP and US GAAP, IFRS or
     Taiwan IFRS can be found in AU Optronics' Annual Report on Form 20-F with
     respect to the year ended December, 2012 filed with the United States
     Securities and Exchange Commission.

Statement of Comprehensive Income

Selected Items form Statement of Comprehensive Income

Amount : NT$ Million
                             --------- ------- --------- ------- --------
                                 1Q'13             4Q'12         QoQ %
                             --------- ------- --------- ------- --------
Net Sales                    94,244    100.0%  99,400     100.0%   (5.2%)
Cost of Goods Sold           (89,696)  (95.2%)  (97,769) (98.4%)   (8.3%)
                             ========= ======= ========= ======= ========
Gross Profit (Loss)           4,548     4.8%    1,631      1.6%   178.8%
Operating Expenses            (5,910)  (6.3%)   (6,577)   (6.6%)  (10.1%)
                             ========= ======= ========= ======= ========
Operating Loss               (1,361)   (1.4%)   (4,945)  (5.0%)   (72.5%)
Net Non-operating Expenses    (1,844)  (2.0%)   (7,967)   (8.0%)  (76.9%)
                             ========= ======= ========= ======= ========
Loss before Tax              (3,205)   (3.4%)  (12,912)  (13.0%)  (75.2%)
                             ========= ======= ========= ======= ========
Net Loss                     (3,320)   (3.5%)  (12,954)  (13.0%)  (74.4%)
                             ========= ======= ========= ======= ========
Attributable to:
 Owners of Company            (3,173)  (3.4%)   (12,258) (12.3%)  (74.1%)
 Non-controlling Interests     (146)   (0.2%)     (697)   (0.7%)  (79.0%)
                             ========= ======= ========= ======= ========
Net Loss                     (3,320)   (3.5%)  (12,954)  (13.0%)  (74.4%)
                             ========= ======= ========= ======= ========
Basic EPS (NT$)(a)             (0.36)            (1.39)            (74.1%)
Operating Income + DandA      15,358    16.3%   12,325     12.4%    24.6%
Display Segment Information:
Net Sales                     90,872   100.0%    97,185   100.0%   (6.5%)
Operating Income (Loss)         184      0.2%   (3,276)   (3.4%)      []
Operating Income + DandA      15,927    17.5%    12,822   13.2%     24.2%
Unit Shipments (mn)(b)
 Large Size Panels              27.0               31.0            (13.0%)
 Small and Medium Size Panels   30.7               37.6            (18.5%)

--------- --------
    1Q'12
--------- --------
81,102     100.0%
 (88,471) (109.1%)
========= ========
 (7,370)  (9.1%)
 (6,320)   (7.8%)
========= ========
(13,690)  (16.9%)
   (340)   (0.4%)
========= ========
(14,030)  (17.3%)
========= ========
(13,782)  (17.0%)
========= ========

 (13,590) (16.8%)
   (191)   (0.2%)
========= ========
(13,782)  (17.0%)
========= ========
  (1.54)
  6,266      7.7%

  78,461   100.0%
 (12,028) (15.3%)
   6,823    8.7%

    27.3
    36.7
--  Unaudited, prepared by AUO based on Taiwan IFRS

(a)  Basic EPS was calculated based on the total weighted average outstanding
     shares of each quarter (8,827m shares in 1Q'13, in 4Q'12 and in 1Q'12) by
     retroactively adjusting to stock dividend and stock bonus

(b)  Large size refers to panels that are 10 inches and above 3 AUO Proprietary
     and Confidential

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Consolidated Balance Sheet Highlights

Amount : NT$ Million

                               1Q'13    4Q'12    QoQ %   1Q'12
                               -------- -------- ------- --------
Cash and ST Investment()a)        64,976   76,656 (15.2%)   84,335
Inventory                        47,099   42,586  10.6%    54,185
Short Term Debt()b )            54,603   54,111  0.9%     54,799
Long Term Debt                  161,865  169,016 (4.2%)   196,375
Equity                          159,981  161,517 (1.0%)   205,626
Total Assets                    524,198  542,416 (3.4%)   606,775
Inventory Turnover (Days)()c)      46       42               53
Net Debt to Equity()d )         94.7%    90.7%             81.1%

-- Unaudited, prepared by AUO based on Taiwan IFRS

(a)  Excluding time deposit with maturity longer than 3 months (NT$ 2,184m in
     1Q'13 ,NT$770m in 4Q'12, and NT$2,233m in 1Q'12)

(b)  Short term debt refers to all interest bearing debt maturing within one
     year

(c)  Calculated by dividing the average inventory into the annualized cost of
     goods sold during such period, then multiplying by 365 days

(d)  Calculated  by  adding  S-T debt  and L-T  debt,  subtracting  cash and S-T
investment, then dividing total equity

Consolidated Cash Flow Highlights

Amount : NT$ Million


                                1Q'13     4Q'12     QoQ
                                --------- --------- ---------
From Operating Activities          1,863    23,583  (21,720)
  Loss before Tax                 (3,205)  (12,912)     9,707
  Depreciation and Amortization      16,719    17,271     (551)
  Net Change in Working Capital  (11,799)    16,386  (28,184)
=============================== ========= ========= =========
From Investing Activities        (7,235)   (7,168)      (67)
 Capital Expenditure              (7,463)   (7,530)        67
=============================== ========= ========= =========
From Financing Activities        (6,608)  (16,716)   10,108
  Net Change in Debt              (6,697)  (13,607)     6,910
=============================== ========= ========= =========
Net Change in Cash()a)         (11,680)     (180)  (11,500)

--   Unaudited, prepared by AUO based on Taiwan IFRS

(a)  In addition to cash generated from operating, investing and financing
     activities, net change in cash also included effect on currency exchange of
     foreign subsidiaries

Consolidated Revenues by Application

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--   Unaudited, prepared by AUO based on Taiwan IFRS

--   CP: Consumer products

--   Mobile PC : Include Notebook/Tablet


Sales Breakdown by Size

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--   Unaudited, prepared by AUO based on Taiwan IFRS

Consolidated Shipments and ASP by Area

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--   Unaudited, prepared by AUO based on Taiwan IFRS

--   ASP per square meter in US$ was translated from NT$ based on average
     exchange rates announced by Directorate General of Customs, ROC Ministry of
     Finance of each respective quarter


Consolidated Small and Medium Panel Shipments by Area and Revenues

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--   Unaudited, prepared by AUO based on Taiwan IFRS

--   Small and Medium size refers to panels that are under 10 inches

Quarterly Capacity by Area

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Appendix

Statement of Comprehensive Income on Taiwan IFRS

Selected Items form Statement of Comprehensive Income

Amount : NT$ Million

                    Q1'12    Q2'12    Q3'12     Q4'12    2012      Q1'13
                    -------- -------- --------- -------- --------- --------
Net Sales            81,102   95,189  102,781    99,400  378,471    94,244
Cost of Goods Sold   88,471   99,301  106,053    97,769  391,594    89,696
Gross Profit (Loss)  (7,370)  (4,113)  (3,272)    1,631  (13,123)    4,548
Operating Loss      (13,690) (10,620)  (9,353)   (4,945) (38,608)   (1,361)
EBITDA                6,266    8,748    9,329    12,325   36,668    15,358
Income before tax   (14,030) (12,092) (16,408)  (12,912) (55,443)   (3,205)
Net Loss            (13,782) (12,700) (16,603)  (12,954) (56,039)   (3,320)
Basic EPS (NT$)       (1.54)   (1.42)    (1.86)   (1.39)    (6.20)   (0.36)
Gross Margin           -9.1%    -4.3%    -3.2%      1.6%    -3.5%      4.8%
Operating Margin      -16.9%   -11.2%    -9.1%     -5.0%   -10.2%     -1.4%
EBITDA Margin           7.7%     9.2%     9.1%    12.4%      9.7%    16.3%

--   Unaudited, prepared by AUO based on Taiwan IFRS

Major Differences between Taiwan IFRS and ROC GAAP

Amount : NT$ Million

                               Taiwan IFRS   ROC GAAP
                                  2012          2012       Difference   %
                               ------------- ------------- ------------ ----
Items on Statement of
  Comprehensive Income
   Net Sales                        378,471       378,471          -      0%
   Gross Loss                       (13,123)       (8,675)      (4,448)  51%
   Operating Loss                   (38,608)      (37,865)        (744)   2%
    Net Loss                        (56,039)      (55,907)        (132)   0%
Items on Balance Sheets
   Current Assets                   174,072       175,736       (1,664)  -1%
   PPandE                             315,518       313,993        1,525    0%
   Other Non-current Assets          52,826        50,074        2,752    5%
    Total Assets                    542,416       539,803        2,614    0%
   Current Liabilities              192,222       191,594         627     0%
   Non-current Liabilities          188,678       184,973        3,705    2%
    Total Liabilities               380,900       376,567        4,333    1%
    Equity                          161,517       163,235       (1,719)  -1%

--   Unaudited, prepared by AUO based on Taiwan IFRS

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