- Room C (Room 323)
- 50. Display Panel Driving Circuit
- August 21, 2015 (Friday)
- 11:00 ~ 12:20
- 11:25 ~ 11:40
- Title:A 10-bit Two-Stage DAC with an Area-Efficient Decoder for Flat Panel Display Source Driver Ics
- Seong-Hwan Hwang, Seung-Tae Kim, Hyeon-Cheon Seol, Jae-Yoon Bae (Hanyang Univ., Korea), Woo-Suk Ha, Bum-Sik Kim (LG Display Co., Ltd, Korea), Seong-Kwan Hong, and Oh-Kyong Kwon (Hanyang Univ., Korea)
Abstract: This paper proposes a 10-bit two-stage digital-to-analog convert (DAC), which is composed of an area-efficient 7-bit DAC and a 3-bit embedded amplifier, to realize the small-area source driver IC for flat panel displays. The proposed 7-bit DAC adopts an area-efficient decoder to simplify the selection procedure of the reference voltage and reduces the number of transistors by 44.3% compared to the conventional tree-type 7-bit DAC. A 20 channel source driver IC is fabricated using a 0.18-¥ìm CMOS process with 1.8 V and 18 V CMOS devices, and the measured integral nonlinearity (INL) and differential nonlinearity (DNL) are 0.487 LSB and 0.089 LSB, respectively.?