Touch panel array

Abstract

The invention discloses a touch panel array. Each array element in the fingerprint identification region is correspondingly provided with a first scanning line in a prior time sequence and a second scanning line in a posterior time sequence; each array element comprises a capacitive electrode, a charging switch and a conversion module, wherein each capacitive electrode is used for forming an inductive capacitance at a fingerprint contact part; one end of each charging switch is connected with the corresponding capacitive electrode, and the other end of the charging switch is connected with the first scanning line corresponding to each array element; each charging switch is electrified when a high level is applied to the corresponding first scanning line; the input end of each conversion module is connected with the second scanning line corresponding to each array element and is used for carrying out voltage sampling, and the output end of each conversion module is connected with an induction line corresponding to each array element and used for outputting an inductive current subjected to conversion and amplification; the control end of each conversion module is connected with an inductive electrode and is used for acquiring a voltage control signal. An amplifying effect on the inductive current is realized by arranging the conversion module in each array element of the touch panel array, so that the accuracy of a touch panel is greatly improved; in addition, the touch panel array disclosed by the invention is low in cost and easy to realize.

Description

technical field [0001] The invention relates to the technical field of microelectronics, in particular to a touch panel array. Background technique [0002] Fingerprint identification technology corresponds a person with his fingerprint, and his real identity can be verified by comparing his fingerprint with the pre-saved fingerprint. The skin texture of each person (including fingerprints) varies in pattern, breakpoints and intersections, that is to say, is unique and remains unchanged throughout life. According to the uniqueness and stability characteristics of human fingerprints, identity identification is realized by collecting the fingerprint patterns of the person to be tested, extracting feature information, and comparing with pre-stored fingerprint sample data. Digital fingerprint identification is a high-tech that integrates biotechnology, sensor technology, digital image processing, pattern matching, and other electronic technologies. With the development of soci...

AI Technical Summary

Problems solved by technology

One is to match the front fingerprint recognition, even if it will damage the appearance of the mobile phone, but it has to be a physical HOME button on the front, which makes the mobile phone ID design difficult; the second is to use a new IFS solution similar to Goodix to integrate the fingerprint recognition sensor Doing it under the cover glass of the mobile phone is actually not much different from opening a hole in this way, but it can be connected with the glass screen and cannot achieve substantial improvement

Whether it is IFS or a physical HOME button, opaque physical buttons can only occupy an additional area of ​​the entire phone panel, limiting the effective display area of ​​the phone

Such defects are obviously incompatible with today's trend of large-screen smartphones

Especially for wearable devices that are about to be popularized, such as smart watches, the experience and security of mobile payment on smart watches will be affected due to the inability to place non-transparent fingerprint recognition modules

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