P‐10: A 5.5‐inch Real HD AMOLED Smartphone with IGZO Backplane

Abstract

We developed a 5.5 inch real HD AMOLED smartphone with IGZO backplane. The a-IGZO TFT with Etching Stop Layer (ESL) structure was fabricated at Gen 6 glass substrate. The a-IGZO shows its superiority in low cost and low leakage current. The high reliability of a-IGZO TFT was demonstrated. The optical and electrical characteristics of OLED cell are also shown.

P‐15.12: 2.06" HD AMOLED Smart Watch with Metal‐oxide TFT Back Panel

“…Metal oxide TFT has the advantages of low leakage current, low cost, high reliability, high mobility and good uniformity. [1,2] The field mobility of the AMOLED TFT device developed in this paper is 12.22 cm 2 /V-sec, the Vth (threshold voltage) is 1.20V, the lon/Ioff (switch ratio) is 1.16E+08, and the SS (sub-threshold swing) is 0.19 V/decade, which proves the high reliability of metal oxide TFT. Good optical and electrical properties are demonstrated.…”

P‐1.1: User‐behavior based External Compensation for Active‐Matrix Organic Light Emitting Diode Displays

“…The actual pixel voltage V'data with/without compensation will be calculated according to formula (1). Apparently, Vdata is fixed by the input images and the only variable parameter is ΔVth.…”

“…Active-matrix organic light emitting diode (AMOLED) is widely used in smart phones, watches, pads and TVs due to its self-luminescence, ultra-thin, vivid color, fast response and other superior characteristics [1][2][3]. The mainstream TFT technologies applied in display drive back-plane have some problems, including poor uniformity of LTPS TFT, poor stability of a-Si TFT and bias stress instability of AOS TFT.…”

An a-IGZO TFT-Based AMOLED Pixel Circuit Employing Stable Mobility Compensation Suppressing Degradation of Detected VTH

“…Among various TFT technologies, amorphous indiumgallium-zinc oxide (a-IGZO) TFTs have gained significant attention due to their extremely low off-current, decent mobility, high on-off ratio, and excellent fabrication uniformity with lowtemperature processes [7]- [11]. Consequently, a-IGZO TFTs have already been successfully employed in large-sized OLED displays, and are also considered as a promising candidate for mobile OLED displays [12].…”