2013
DOI: 10.1002/j.2168-0159.2013.tb06373.x
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67.1: Distinguished Student Paper: 40 um‐pitch IGZO TFT Gate Driver for High‐resolution Rollable AMOLED

Abstract: We report the design and fabrication of an amorphous‐indium‐gallium‐zinc‐oxide (a‐IGZO) thin‐film transistor (TFT)‐based high‐speed and ultra‐narrow shift register on a plastic substrate. The shift register consisting 5 TFTs and 1 capacitor is small in physical size which is only 40 μm in width (pitch). At the supply voltage (VDD) of 15 V, the clock frequency of the shift register approaches 166.7 kHz, corresponding to a pulse width of 3 μs. The shift register could be operated under mechanical bending radius … Show more

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Cited by 21 publications
(14 citation statements)
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“…2 shows an optical micrograph of the fabricated gate driver. The single stage covers a small area of only 720 µm × 30 µm, which is much smaller compared to other oxide TFT-based gate drivers in literature [8]- [17]. Fig.…”
Section: Rseults and Discussionmentioning
confidence: 99%
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“…2 shows an optical micrograph of the fabricated gate driver. The single stage covers a small area of only 720 µm × 30 µm, which is much smaller compared to other oxide TFT-based gate drivers in literature [8]- [17]. Fig.…”
Section: Rseults and Discussionmentioning
confidence: 99%
“…In [10], the speed is also high but the circuit employs the etch-stopper structure and very large TFTs, which explains the absence of a capacitor. In the list, the smallest gate driver is also from our group and is fabricated on plastic [8]. To achieve such a small size, fewer TFTs were used in the circuit, which lead large ripples in the output waveform.…”
Section: Rseults and Discussionmentioning
confidence: 99%
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“…In recent years, displays of portable devices have increasingly exhibited high resolution and narrow bezel to improve the visual experience of users [4], [5]. However, as the resolution of AMLCDs increases, the pixels become smaller, so the pitch of the gate driver circuit must be decreased [6], [7]. Also, to satisfy the requirement of a narrow bezel, the width of the layout for the gate driver circuit should be small.…”
Section: Introductionmentioning
confidence: 99%
“…In n-type logic, it is typically challenging to obtain short rise times for charging large capacitances, such as the select lines of a display. Recently reported techniques, such as bootstrapping enable fast rise times in unipolar technologies [5]. The top of Fig.…”
mentioning
confidence: 99%