用于OLED驱动电路的振荡器设计

doi:10.16257/j.cnki.1681-1070.2019.0041

电子与封装 ›› 2019, Vol. 19 ›› Issue (4): 024 -27. doi: 10.16257/j.cnki.1681-1070.2019.0041

用于OLED驱动电路的振荡器设计

程　亮¹，赵子龙^2,3

1.山西经济管理干部学院，山西太原　030024；2.重庆大学土木工程学院，重庆　400045；3. 重庆大学山地城镇建设与新技术教育部重点实验室，重庆　400045

收稿日期:2018-12-08 出版日期:2019-04-20 发布日期:2020-01-16
作者简介:程　亮（1983—），男，山西太原人，硕士, 讲师，毕业于电子科技大学，现任职于山西经济管理干部学院，从事集成电路设计和应用电子方面的研究工作。

A Design of Oscillator for OLED Drive Circuit

CHENG Liang1, ZHAO Zilong 2,3

1. Shanxi Institute of Economic Management, Taiyuan 030024, China; 2. School of Civil Engineering, Chongqing University, Chongqing 400045, China; 3. Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Ministry of Education, Chongqing 400045, China

Received:2018-12-08 Online:2019-04-20 Published:2020-01-16

摘要/Abstract

摘要： 有机发光二极管（OLED）在不同的工作温度下发光亮度不同，严重影响显示效果。为解决这一问题，需要在驱动芯片中设计温度传感器，实时采样温度信息来调整光亮度。利用带隙基准原理设计了一种输出信号的频率与绝对温度成线性关系的振荡器。通过带隙基准电源产生与绝对温度成正比例的电流，使用该电流对电容充放电以实现信号的振荡。采用CSMC 0.18 μm CMOS 工艺对电路仿真，电源电压设置为1.8 V，TT标准工艺角，仿真温度设置为0℃时，输出信号频率为3.447 MHz。温度每升高1℃，输出信号的频率增加16 kHz，可以为OLED驱动电路提供精确的温度信息。

关键词: 振荡器；正比绝对温度的电流；驱动电路；有机发光二极管

Abstract: The organic light emitting diode (OLED) has different luminance at different working temperatures, which affects the display effect. In order to solve this problem, it is necessary to design a temperature sensor in the drive chip to provide temperature information. In this paper, an oscillator with a linear variation in the frequency of the output signal with the temperature is designed. The proportional to absolute temperature (PTAT) current generated by a bandgap reference source is charged and discharged to the capacitor to realize the oscillation of the circuit. The CSMC 0.18 μm CMOS process is used for simulation. Under the 1.8V power supply, the output frequency is 3.447 MHz at 0℃ through the TT corner process. When the temperature rises by 1℃, the frequency of the output signal increases by 16 kHz, which can provide effective temperature information for the OLED drive circuit.

Key words: oscillator; proportional to absolute temperature (PTAT) current; drive circuit; organic light emitting diode (OLED)

中图分类号:

程　亮，赵子龙. 用于OLED驱动电路的振荡器设计[J]. 电子与封装, 2019, 19(4): 024 -27.

CHENG Liang. A Design of Oscillator for OLED Drive Circuit[J]. Electronics & Packaging, 2019, 19(4): 024 -27.

参考文献 15

[1]	Nathan A, Kumar A, Sakariya K. Amorphous silicon thin film transistor circuit integration for organic LED displays on glass and plastic[J]. Solid-State Circuits, 2004, 39 (9): 1477-1486.
[2]	Fyfe D. LED Technology: Organic displays come of age[J]. Nature Photonics, 2009, 3 (8) : 453-455.
[3]	Stewart M, Howell R S, Pires L, Hatalis M K. Polysilicon TFT technology for active matrix OLED displays[J]. IEEE Transactions on Electron Devices, 2001, 48 (5): 845-851.
[4]	Geffroy B, Roy P L, Prat C. Organic light-emitting diode (OLED) technology: materials, devices and display technologies[J]. Polymer International, 2006, 55 (6): 572-582.
[5]	Yersin H. Triplet Emitters for OLED Applications—Mechanisms of Exciton Trapping and Control of Emission Properties[J]. Topics in Current Chemistry, 2004, 241: 1-26.
[6]	Jonda C, Mayer A B R, Thelakkat M, Schmidt H W, A Schreiber. Investigation of TDAPBs as hole-transporting materials for organic light-emitting devices (OLEDs) [J]. Advanced Functional Materials, 2010, 9 (3): 117-128.
[7]	Kreger K, B?te M, Neuber C, Schmidt H W, Strohriegl P. Combinatorial Development of Blue OLEDs Based on Star Shaped Molecules[J]. Advanced Functional Materials, 2007, 17 (17) : 3456-3461.
[8]	Belhumeur P N, Kriegman D J, Yuille A L. The bas-relief ambiguity[J]. International Journal of Computer Vision, 1999, 35 (1): 33-44.
[9]	Razavi B. Design of Analog CMOS Integrated Circuits[M]. Xian: Xian Jiaotong University Press, 2011: 284-286.
[10]	Yuriy Konstantinovich Rybin. Barkhausen criterion for pulse oscillators[J]. International Journal of Electronics, 2012, 99 (11): 1547-1556.
[11]	Rincon-Mora G, Allen P E. A 1.1-V current-mode andpiecewise-linear curvature-corrected bandgap reference [J]. Solid-State Circuits,1998, 33(10): 1551-1554.
[12]	Tsividis Y P. Accurate analysis of temperature effects incharacteristics with application to bandgap reference sources[J]. Solid-State Circuits. 1980, 15(6): 1076–1084.
[13]	Lu L H, Chien J C. A wide-band CMOS injection-locked ring oscillator[J]. IEEE Microwave & Wireless Components Letters, 2005 , 15 (10) : 676-678.
[14]	Sundaresan K ，Allen PE ，Ayazi F. Process and temperature compensation in a 7-MHz CMOS clock oscillator[J]. IEEE Journal of Solid-State Circuits , 2006 , 41 (2) :433-442.
[15]	程亮. 一种高精度电压基准源设计方法[J]. 山西电子技术, 2014(2): 13-14.

中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

用于OLED驱动电路的振荡器设计

A Design of Oscillator for OLED Drive Circuit

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