4.4L: <i>LateNews Paper</i>: A Novel High Reliable Integrated Gate Driver with BiScanning Structure using aSi TFT for Large Size FHD TFTLCD TVs

A stack buffer structure is proposed to suppress feed-through effects, which is caused by serious gate-to-drain capacitance of Etching-Stop-Layer (ESL) type InGaZnO (IGZO) TFTs. For low-level-maintaining periods, the stack buffer TFT can be modeled by reversely cascaded diodes for decreasing of noise voltage of internal nodes. Compared with conventional designs, the proposed buffer structure owns better stability and good driving ability. A robust gate driver using the proposed buffer structure is demonstrated, and only 7 TFTs and 1 capacitance are used. Thorough analysis and simulations are carried out, and the circuit performance is discussed concerning threshold voltage variation, different bootstrapping capacitance, and decreased driving pulse width. It is proven that the proposed gate driver is promising for high performance IGZO TFT display with high resolution for large dimension display.

Section: Operating Principal Of the Proposed Gate Drivermentioning

confidence: 99%

P‐28: Robust Gate Driver Design with Etching‐Stop‐Layer Type InGaZnO TFTs Using Stack Buffer Structure

Liao

Liu

et al. 2017

“…The self-emission characteristics of the OLEDs can realize perfect black without light leakage and high brightness. Simultaneously, achieve an uniform luminance and color by using compensation technologies [6][7]. The developed OLED display panel for TV uses external compensation method, so it needs not only driving image synchronization but also an accurate synchronization technique in external compensation [8][9].…”

Section: Introductionmentioning

confidence: 99%

45‐1: A Novel 88‐inch 8K OLED Display for Premium Large‐Size TVs

Shin¹,

Choi²,

Kim³

et al. 2021

Self Cite

In this paper, we present the novel 88‐inch 8K OLED display for premium large size TVs. New key technologies are applied to 8K OLED display, including a coplanar type IGZO TFT backplane, simple pixel structure with white OLED, current compensation method, large area high speed GIP, pixel charging rate improvement, and driving system with two chip timing controllers. Those technologies enable high image quality characteristic and high reliability of OLED panel. Using the developed 8K OLED displays, we have successfully launched 88‐, and 77‐inch 8K OLED TVs.

“…Simultaneously, achieve a wider viewing angle and uniform luminance by using precise compensation [1][2][3][4]. Despite this overwhelming performance, the high price of the OLEDs that slow down the transition to the OLEDs, which was previously developed the integrated gate driver in the direction of the cost reduction [5]. On the other hand, it is one thing to emphasize the advantages of the OLEDs more clearly by improving the picture quality of the OLEDs [6].…”

Section: Introductionmentioning

confidence: 99%

76‐2: Distinguished Paper: A High‐Image‐Quality OLED Display with Motion Blur Reduction for Ultra‐High Resolution and Premium TVs

Shin¹,

Choi²,

Kim³

et al. 2020

Self Cite

We have developed a high image quality OLED Display with motion blur reduction technology. Our latest work includes driving method which reduces motion blur using an adaptive black data insertion, brightness compensation technology, the simple structure pixel with low capacitance coupling for horizontal noise, and the multi-function integrated gate driver. The MPRT value of the OLED display panel with a fast response time was significantly affected by the frame frequency and the compensation driving method. The decrease in the MPRT value originated from the turning of the emitting pixels off in advance resulting from providing black data. The integrated gate drivers were designed to achieve the normal display, the black data insertion, and the compensation mode. The MPRT value of the 65inch UHD OLED panels was decreased to 3.4ms by using an integrated gate driver circuit. The motion blur of large-size OLED display panels was significantly reduced due to a decrease in the MPRT value.