A Direct-Type Fast Feedback Current Driver for Medium-to Large-Size AMOLED Displays

Jeon, Jin Yong; Jeon, Young-Deuk; Son, Young‐Suk; Lee, Kwang-Chan; Lee, Hyung Min; Jung, Seungchul; Lee, Kang-Ho; Cho, Gyu‐Hyeong

doi:10.1109/isscc.2008.4523113

Cited by 21 publications

(13 citation statements)

References 5 publications

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“…LG NFB (s) = −r OP r S1 + R DP + 1/g m. DTFT · (1 + sC DP /g m.DTFT ) (1 + 2sC GS1 r S5 ) ·[1 + s(C C + C GS5 )r OP ] · 1 + sC DP (r S1 + R DP ) g −1 m.DTFT (2) LG The driving speed of 6 μs for a wide range of the data current from 10 nA to 3 μA allows the ITCF driver to be in charge of more than two DLs with a single column driver for an AMOLED display panel with XGA resolution, which permits a programming time of 21 μs. In the chip implementation, a single channel driver is designed to take care of two ADLs.…”

Section: B Chip Implementation and Measurement Resultsmentioning

confidence: 99%

“…The output switches alternate their connections to between Data Line [1] and Data Line [2] in accordance with the operation timing diagram.…”

Section: B Amoled Panel Application Of Itcf Drivermentioning

confidence: 99%

“…6(b), where the gain curves for the DL and ADL networks stand for the source degeneration effects on the common-source amplifier M1 and M2. Table I summarizes the expression for each pole and zero considered in the frequency responses of the ITCF output buffer, and the frequency responses of the NFB and PFB are analyzed in (2) and (3), shown at the bottom of the next page.…”

Section: Frequency Responses and Stability Analysismentioning

confidence: 99%

“…To make the best of the merits of the current mode driving scheme, several current driving methods have been suggested with improved performances, particularly in data driving speed. Among the approaches, a current feedback driver for full high definition-sized AMOLED displays has recently been introduced, which shows a fast driving speed for a wide range of data current [2]. However, the suggested current driver has a restricted bandwidth due to the second pole formed with the panel parasitic.…”

Section: Introductionmentioning

confidence: 99%

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Improved Transient Current Feedforward Output Buffer for Fast and Compact Active-Matrix OLED Column Drivers

Jeon

Son

Jeon

et al. 2009

IEEE Trans. Circuits Syst. II

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An improved transient current feedforward driver is designed for compact implementation and low-power consumption by adopting the demultiplexing operation of the proposed driver based on the fast driving speed of 6 μs for the panel load of 6 kΩ/40 pF, which is equivalent to that of extended-graphicarray active-matrix organic light-emitting diode displays. The driver has the structural advantages of simple frequency compensation and low-power consumption, which come from the elimination of an internal operational transconductance amplifier (OTA). The chip implementation confers that the area of the driver is 32.5 × 217 μm 2 , and the power consumption is 6.5 μA for each channel.Index Terms-Active-matrix organic light-emitting diode (AMOLED), column driver, transient current feedforward.

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Section: B Chip Implementation and Measurement Resultsmentioning

confidence: 99%

“…The output switches alternate their connections to between Data Line [1] and Data Line [2] in accordance with the operation timing diagram.…”

Section: B Amoled Panel Application Of Itcf Drivermentioning

confidence: 99%

Section: Frequency Responses and Stability Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improved Transient Current Feedforward Output Buffer for Fast and Compact Active-Matrix OLED Column Drivers

Jeon

Son

Jeon

et al. 2009

IEEE Trans. Circuits Syst. II

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“…Several feedback methods have been suggested to drive the data current and increase the driving speed, as compared with open-loop current driving [3]- [5]. Fig.…”

Section: Introductionmentioning

confidence: 99%

A Direct Fast Feedback Current Driver Using an Inverting Amplifier for High-Quality AMOLED Displays

Jeon

Son

et al. 2012

IEEE Trans. Circuits Syst. II

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A direct fast feedback current (DFFC) driver is proposed for high-quality AMOLED displays with inverted type pixels. The driver is implemented using an integrator with a loop compensator and an inverting amplifier with a switchedcapacitor gain circuit. Demultiplexing operation is realized to drive two channels using one driver. The measurement result shows settling time of 7 µs for a panel load of 1.5 kΩ/100 pF. The driver is fabricated in a 0.35-µm CMOS process, and the area is 120 × 131 µm 2 per two channels.Index Terms-Active-matrix organic light-emitting diode (AMOLED), column driver, fast feedback current driver, feedback current driver.

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High‐Speed Current‐Mode Data Drivers for Amoled Displays

Jeon

Cho

2012

Advanced Circuits for Emerging Technologies

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A Direct-Type Fast Feedback Current Driver for Medium-to Large-Size AMOLED Displays

Cited by 21 publications

References 5 publications

Improved Transient Current Feedforward Output Buffer for Fast and Compact Active-Matrix OLED Column Drivers

Improved Transient Current Feedforward Output Buffer for Fast and Compact Active-Matrix OLED Column Drivers

A Direct Fast Feedback Current Driver Using an Inverting Amplifier for High-Quality AMOLED Displays

High‐Speed Current‐Mode Data Drivers for Amoled Displays

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