Touch display device with fingerprint recognition function

Abstract

The invention discloses a touch display device with a fingerprint identification function. The touch screen comprises a display panel, a touch layer arranged in a touch area, and a fingerprint identification layer arranged in the touch area, the touch layer comprises a plurality of touch driving electrodes and a plurality of touch sensing electrodes; the fingerprint identification layer comprisesa plurality of first fingerprint identification electrodes and a plurality of second fingerprint identification electrodes, the first fingerprint identification electrodes and the second fingerprint identification electrodes have no overlapping surfaces with the touch driving electrodes, and when the touch function is started, the first fingerprint identification electrodes and the second fingerprint identification electrodes are multiplexed as the touch driving electrodes. According to the display panel, the fingerprint identification circuit is integrated in the touch circuit, and meanwhile,the fingerprint identification electrode is used as a part of the touch driving electrode, so that the screen-to-body ratio of the display panel can be increased, and fingerprint identification and touch functions are not influenced.

Description

Technical field [0001] The present invention relates to the field of touch technology, in particular to a touch display device with fingerprint identification function. Background technique [0002] With the development of display technology, mobile phones are indispensable in daily life as an important communication tool. The pursuit of maximizing the display area and integrating fingerprint recognition in the panel display area have become the mainstream development direction of display technology. In traditional technology, fingerprint recognition is placed as a separate module in the non-display area, such as the lower frame, side or back of the front. The fingerprint recognition of the above schemes are all assembled as a separate module. This fingerprint recognition setting requires Occupies a part of the space of the mobile phone module, affecting the overall display ratio and the internal space of the whole machine. Summary of the invention [0003] The present invention ...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a touch display device with a fingerprint identification function. The fingerprint identification circuit is integrated into the touch circuit to solve the problem of the existing display panel. Since the fingerprint identification is set as a separate module in the non-display area of ​​the panel , causing the fingerprint identification module to occupy a certain amount of space, affecting the screen-to-body ratio of the display, which is not conducive to the development of the display panel in the direction of high screen-to-body ratio and full screen

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