Details

Autor(en) / Beteiligte

• Hong, Seok-Ha
• Yang, Ik-Seok
• Kang, Jin-Seong
• Hwang, Tong-Hun
• Kwon, Oh-Kyong
• Byun, Choon-Won
• Cheong, Woo-Seok
• Hwang, Chi-Sun
• Cho, Kyong-Ik

Titel

DC--DC Converters Using Indium Gallium Zinc Oxide Thin Film Transistors for Mobile Display Applications

Ist Teil von

• Japanese Journal of Applied Physics, 2010-03, Vol.49 (3), p.03CB05-03CB05-5

Ort / Verlag

The Japan Society of Applied Physics

Erscheinungsjahr

2010

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• DC--DC converters integrated into a panel are proposed for mobile display applications using indium gallium zinc oxide (IGZO) thin film transistors (TFTs). The proposed positive DC--DC converter uses cross-coupled and diode-connected structures for a high output voltage and a high power efficiency, while the proposed negative DC--DC converter uses also a cross-coupled structure but with separated pumping capacitors for a negative output voltage and a high power efficiency. The simulated results show that the output voltage and power efficiency are 21.3 V and 69.5% for the positive DC--DC converter and $-5.1$ V and 56.1% for the negative DC--DC converter, respectively, at a supply voltage of 10 V and a load current of 250 \mbox{$\mu$}A. The measured results show that the output voltage and power efficiency of the proposed positive DC--DC converter are 20.8 V and 66.6%, respectively, under the same conditions as those for the simulated results.