Designing High-Sensitivity Optical Sensor for In-Cell Fingerprint Sensor with Thick Cover Glass in OLED Display

Chih Chang Lai; Wei Yu Wang; Yi Cheng Yuan; Hao Jen Hung; Shao Jung Li; Cheng-Huan Chen; Ya Hsiang Tai; Hua Wei Liu; Yu Ying Tang; Yao Chung Chang; Ching Chun Lin

doi:10.1002/sdtp.16617

Designing High-Sensitivity Optical Sensor for In-Cell Fingerprint Sensor with Thick Cover Glass in OLED Display

Chih Chang Lai, Wei Yu Wang, Yi Cheng Yuan, Hao Jen Hung, Shao Jung Li, Cheng-Huan Chen, Ya Hsiang Tai, Hua Wei Liu, Yu Ying Tang, Yao Chung Chang, Ching Chun Lin

Department of Photonics

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

In this paper, we propose an in-cell optical fingerprint sensor integrated with an OLED display, featuring a high-sensitivity sensor that was determined through systematic evaluation. Feasibility of the proposed sensor and sensing circuit was verified through optical and electrical simulation. Additionally, three different approaches to increase the contrast and dynamic range of the identification unit were proposed, including embedding a lens element, exploiting color filters, and optimizing sensor location. Finally, the paper concludes with design considerations for promoting sensing accuracy.

Original language	English
Pages (from-to)	554-557
Number of pages	4
Journal	Digest of Technical Papers - SID International Symposium
Volume	54
Issue number	1
DOIs	https://doi.org/10.1002/sdtp.16617
State	Published - 2023
Event	SID International Symposium Digest of Technical Papers, 2023 - Los Angeles, United States Duration: 21 May 2023 → 26 May 2023

Keywords

Active pixel sensor
FTDI
High sensitivity
In-cell fingerprint identification
OLED panel

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10.1002/sdtp.16617

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title = "Designing High-Sensitivity Optical Sensor for In-Cell Fingerprint Sensor with Thick Cover Glass in OLED Display",

abstract = "In this paper, we propose an in-cell optical fingerprint sensor integrated with an OLED display, featuring a high-sensitivity sensor that was determined through systematic evaluation. Feasibility of the proposed sensor and sensing circuit was verified through optical and electrical simulation. Additionally, three different approaches to increase the contrast and dynamic range of the identification unit were proposed, including embedding a lens element, exploiting color filters, and optimizing sensor location. Finally, the paper concludes with design considerations for promoting sensing accuracy.",

keywords = "Active pixel sensor, FTDI, High sensitivity, In-cell fingerprint identification, OLED panel",

author = "Lai, {Chih Chang} and Wang, {Wei Yu} and Yuan, {Yi Cheng} and Hung, {Hao Jen} and Li, {Shao Jung} and Cheng-Huan Chen and Tai, {Ya Hsiang} and Liu, {Hua Wei} and Tang, {Yu Ying} and Chang, {Yao Chung} and Lin, {Ching Chun}",

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doi = "10.1002/sdtp.16617",

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AU - Lai, Chih Chang

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AU - Yuan, Yi Cheng

AU - Hung, Hao Jen

AU - Li, Shao Jung

AU - Chen, Cheng-Huan

AU - Tai, Ya Hsiang

AU - Liu, Hua Wei

AU - Tang, Yu Ying

AU - Chang, Yao Chung

AU - Lin, Ching Chun

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AB - In this paper, we propose an in-cell optical fingerprint sensor integrated with an OLED display, featuring a high-sensitivity sensor that was determined through systematic evaluation. Feasibility of the proposed sensor and sensing circuit was verified through optical and electrical simulation. Additionally, three different approaches to increase the contrast and dynamic range of the identification unit were proposed, including embedding a lens element, exploiting color filters, and optimizing sensor location. Finally, the paper concludes with design considerations for promoting sensing accuracy.

KW - Active pixel sensor

KW - FTDI

KW - High sensitivity

KW - In-cell fingerprint identification

KW - OLED panel

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Designing High-Sensitivity Optical Sensor for In-Cell Fingerprint Sensor with Thick Cover Glass in OLED Display

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