Letter: A new compensation pixel circuit with metal oxide thin‐film transistors for active‐matrix organic light‐emitting diode displays

This paper presents a novel compensation pixel circuit for active‐matrix organic light‐emitting diode displays, in which the coupling effect mask technology is developed to compensate the threshold voltage of driving thin‐film transistor whether it is positive or negative. Twenty discrete compensation pixel circuits have been fabricated by In‐Zn‐O thin‐film transistors process. It is measured that the non‐uniformity of the proposed pixel circuit is significantly reduced with an average value of 8.6%. Furthermore, the organic light‐emitting diode emission current remains constant during 6 h continuous operation, which also confirms the validity of the proposed pixel circuit.

[1]  M. Cheng,et al.  New Voltage-Programmed AMOLED Pixel Circuit to Compensate for Nonuniform Electrical Characteristics of LTPS TFTs and Voltage Drop in Power Line , 2014, IEEE Transactions on Electron Devices.

[2]  Chia-Che Hung,et al.  Compensating Pixel Circuit Driving AMOLED Display With a-IGZO TFTs , 2013, IEEE Electron Device Letters.

[3]  Hiroyuki Miyake,et al.  9.1: WITHDRAWN: 9.2: New Threshold Voltage Compensation Pixel Circuits in 13.5‐inch Quad Full High Definition OLED Display of Crystalline In‐Ga‐Zn‐Oxide FETs , 2012 .

[4]  Miao Xu,et al.  High performance indium-zinc-oxide thin-film transistors fabricated with a back-channel-etch-technique , 2011 .

[5]  Jun-Biao Peng,et al.  A New Voltage-Programmed Pixel Circuit for Enhancing the Uniformity of AMOLED Displays , 2011, IEEE Electron Device Letters.

[6]  Sang-soo Kim,et al.  High‐speed pixel circuits for large‐sized 3‐D AMOLED displays , 2011 .

[7]  Jun Li,et al.  High performance ZnO-thin-film transistor with Ta2O5 dielectrics fabricated at room temperature , 2009 .

[8]  Kimoon Lee,et al.  Transparent and Photo‐stable ZnO Thin‐film Transistors to Drive an Active Matrix Organic‐Light‐ Emitting‐Diode Display Panel , 2009 .

[9]  Chih-Lung Lin,et al.  A Novel Voltage-Feedback Pixel Circuit for AMOLED Displays , 2008, Journal of Display Technology.

[10]  Ya-Hsiang Tai,et al.  A new pixel circuit for driving organic light-emitting diode with low temperature polycrystalline si , 2005 .

[11]  H. Ohta,et al.  Room-temperature fabrication of transparent flexible thin-film transistors using amorphous oxide semiconductors , 2004, Nature.

[12]  A. Nathan,et al.  Amorphous silicon thin film transistor circuit integration for organic LED displays on glass and plastic , 2004, IEEE Journal of Solid-State Circuits.

[13]  Jin Jang,et al.  A new a-Si:H thin-film transistor pixel circuit for active-matrix organic light-emitting diodes , 2003 .

[14]  S. Pearson,et al.  The impact of the transient response of organic light emitting diodes on the design of active matrix OLED displays , 1998, International Electron Devices Meeting 1998. Technical Digest (Cat. No.98CH36217).

[15]  Min-Koo Han,et al.  A new a-Si:H TFT pixel circuit compensating the threshold voltage shift of a-Si:H TFT and OLED for active matrix OLED , 2005, IEEE Electron Device Letters.

[16]  Ya-Hsiang Tai,et al.  A new pixel circuit for driving organic light-emitting diode with low temperature polycrystalline silicon thin-film transistors , 2005, Journal of Display Technology.

[17]  Choong-Ki Kim,et al.  A new a-Si:H thin-film transistor pixel circuit for active-matrix organic light-emitting diodes , 2003, IEEE Electron Device Letters.