AMOLED公司
信号(编程语言)
栏(排版)
放大器
电压
电阻器
频道(广播)
12位
CMOS芯片
电子工程
材料科学
电气工程
计算机科学
工程类
有源矩阵
帧(网络)
电信
图层(电子)
复合材料
程序设计语言
薄膜晶体管
作者
Tai-Ji An,Moon-Sang Hwang,Wonyoung Choe,Jun-Sang Park,Gil-Cho Ahn,Seung‐Hoon Lee
出处
期刊:Journal of Semiconductor Technology and Science
[The Institute of Electronics Engineers of Korea]
日期:2019-08-31
卷期号:19 (4): 347-356
被引量:1
标识
DOI:10.5573/jsts.2019.19.4.347
摘要
This work proposes a ramp signal-based column driving technique to maximize the area efficiency of the column driver integrated circuit (IC) for high-resolution active-matrix organic light emitting diodes (AMOLED) panels. The proposed column driving technique replaces the 2SUPn/SUP reference voltages coming from the conventional n-bit resistor digital-to-analog converters (RDAC) with a single ramp signal, thereby reducing the area of the column driver IC by 44.3%. A weighted two-step interpolation structure, composed of the first-stage 6-bit ramp signal and the second-stage 2-bit amplifier DAC, reduces the required operation speed of the ramp signal under a limited 1-horizontal (1-H) time, while processing 8-bit image signals. The performance of the proposed column driving technique is verified with a 96-channel prototype IC fabricated in a 0.18 μm CMOS process. The deviation of voltage output (DVO) of the prototype IC are within ±6 mV, and the unit channel area is 4200 μ㎡.
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