Flat panel fingerprint optical sensor using TFT technology

Liao, Yihuan; Chang, Chun; Lin, Chih‐Hao; You, Jhen-Yu; Hsieh, Hao-Lun; Chen, Jingwen; Cho, An-Thung; Liu, Yurong; Lai, Ying-Hui; Tseng, Jen-Pei; Chiang, Mao-Lun; Lin, Yan‐Cheng

doi:10.1109/icsens.2015.7370374

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…Recently, ultrasound fingerprint sensors have attracted considerable interest owing to their design innovations and because they are unaffected by contamination and moisture in the human hand. The PMUT sensor transmits ultrasound waves between the fingerprint frames and valleys, and based on the time-of-flight change, an image can be developed for a human fingerprint [52], [53], [54].…”

Section: ) Aln-based Pmutmentioning

confidence: 99%

A Review of the Recent Applications of Aluminum Nitride-Based Piezoelectric Devices

et al. 2023

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Piezoelectric materials have attracted considerable attention over the last two decades because many technologies utilize their core properties of piezoelectric materials. Previous applications consisted of bulk structures; however, a shift towards better performance and a more simplified and compatible fabrication method are required. Aluminum nitride (AlN) is a material that fits these criteria; it has a non-centrosymmetric crystal structure with a polarized c-axis and exhibits piezoelectric properties. Furthermore, it has an added benefit as the fabrication process of AIN is compatible with complementary metal-oxide semiconductor technology. This has led to a rapid increase in the adoption and interest in AlNbased devices. In this review, the crystal structure of AlN and its piezoelectric properties are compared with those of aluminum scandium nitride. Subsequently, functional devices such as consumer-based devices, telecommunication-based devices, industrial-related applications, and medical applications are presented. Finally, a summary and discussion of the future AlN research are presented.

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Section: ) Aln-based Pmutmentioning

confidence: 99%

A Review of the Recent Applications of Aluminum Nitride-Based Piezoelectric Devices

et al. 2023

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“…Based on amorphous silicon TFT technology, optical fingerprint sensors may achieve slimness, compactness, and wide areas [ 100 ]. The PPS structure enables the creation of A-Si:H field-effect devices [ 101 ].…”

Section: Optical Fingerprint Recognitionmentioning

confidence: 99%

A Review of Fingerprint Sensors: Mechanism, Characteristics, and Applications

Niu

et al. 2023

Micromachines

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Identification technology based on biometrics is a branch of research that employs the unique individual traits of humans to authenticate identity, which is the most secure method of identification based on its exceptional high dependability and stability of human biometrics. Common biometric identifiers include fingerprints, irises, and facial sounds, among others. In the realm of biometric recognition, fingerprint recognition has gained success with its convenient operation and fast identif ication speed. Different fingerprint collecting techniques, which supply fingerprint information for fingerprint identification systems, have attracted a significant deal of interest in authentication technology regarding fingerprint identification systems. This work presents several fingerprint acquisition techniques, such as optical capacitive and ultrasonic, and analyzes acquisition types and structures. In addition, the pros and drawbacks of various sensor types, as well as the limits and benefits of optical, capacitive, and ultrasonic kinds, are discussed. It is the necessary stage for the application of the Internet of Things (IoT).

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“…A higher panel transmittance can improve the recognition precision and reduce the response time for fingerprint, infrared identification, and all other under-display sensor performance [4,5]. In the conventional FMM method, the high transmittance area (Fig.…”

Section: Higher Panel Transmittance Without Extra Costsmentioning

confidence: 99%

17‐2: Development of Visionox intelligent Pixelization (ViP^TM) Technology in AMOLED Applications

Xiao,

Ni,

et al. 2023

Symp Digest of Tech Papers

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Flat panel fingerprint optical sensor using TFT technology

Cited by 5 publications

References 7 publications

A Review of the Recent Applications of Aluminum Nitride-Based Piezoelectric Devices

A Review of the Recent Applications of Aluminum Nitride-Based Piezoelectric Devices

A Review of Fingerprint Sensors: Mechanism, Characteristics, and Applications

17‐2: Development of Visionox intelligent Pixelization (ViP^TM) Technology in AMOLED Applications

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Flat panel fingerprint optical sensor using TFT technology

Cited by 5 publications

References 7 publications

A Review of the Recent Applications of Aluminum Nitride-Based Piezoelectric Devices

A Review of the Recent Applications of Aluminum Nitride-Based Piezoelectric Devices

A Review of Fingerprint Sensors: Mechanism, Characteristics, and Applications

17‐2: Development of Visionox intelligent Pixelization (ViPTM) Technology in AMOLED Applications

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Product

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17‐2: Development of Visionox intelligent Pixelization (ViP^TM) Technology in AMOLED Applications