Near-field communication integration into in-cell touch thin-film-transistor liquid-crystal display

IF 1.7 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of the Society for Information Display Pub Date : 2024-05-06 DOI:10.1002/jsid.1290

Boshi Feng, Xiuyun Chen, Guangquan Wang, Yujie Liu, Feng Long, Site Cai, Xibin Shao

引用次数: 0

Abstract

In this paper, we demonstrated the front NFC card swipe and touch display in Touch and Display Driver Integration (TDDI) liquid crystal display (LCD) through the technologies shown later. A new NFC sampling and noise reduction algorithm was used to reduce the generation of the ghost position and touch failure. The touch/NFC part-time driving was applied to optimize the noise interference when NFC works. Meanwhile, we integrated the NFC antenna in the TDDI LCD and added a new display signal filter circuit and VCOM driver signal. In the NFC in-cell demo, front NFC swiping distance of 60 mm is achieved.

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将近场通信集成到内置触摸薄膜晶体管液晶显示器中

在本文中，我们通过后面展示的技术，在触摸和显示驱动集成（TDDI）液晶显示器（LCD）中演示了前置 NFC 刷卡和触摸显示。我们采用了一种新的 NFC 采样和降噪算法，以减少重影位置和触摸失败的产生。我们采用了触摸/NFC 分时驱动技术，以优化 NFC 工作时的噪声干扰。同时，我们在 TDDI LCD 中集成了 NFC 天线，并添加了新的显示信号滤波电路和 VCOM 驱动信号。在 NFC in-cell 演示中，前部 NFC 刷卡距离达到了 60 毫米。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Society for Information Display 工程技术-材料科学：综合

CiteScore

4.80

自引率

8.70%

发文量

审稿时长

3 months

期刊介绍： The Journal of the Society for Information Display publishes original works dealing with the theory and practice of information display. Coverage includes materials, devices and systems; the underlying chemistry, physics, physiology and psychology; measurement techniques, manufacturing technologies; and all aspects of the interaction between equipment and its users. Review articles are also published in all of these areas. Occasional special issues or sections consist of collections of papers on specific topical areas or collections of full length papers based in part on oral or poster presentations given at SID sponsored conferences.