Liquid crystal device having fingerprint identification function

Abstract

The invention relates to a liquid crystal device having a fingerprint identification function. The liquid crystal device comprises an array glass substrate, a colorful filtering glass substrate, an organic light emitting layer, a pixel display layer and a detection wiring and induction pole layer, wherein the organic light emitting layer, the pixel display layer, the detection wiring and induction pole layer are arranged between the array glass substrate and the colorful filtering glass substrate. The liquid crystal device is advantaged in that compound display and detection fingerprint identification and touch control functions are further realized mainly through mutual matching of internal wiring and a pole structure of the pixel display layer and the detection wiring and induction pole layer.

Description

technical field [0001] A liquid crystal device with fingerprint recognition, especially a liquid crystal device with fingerprint recognition and touch function. Background technique [0002] In the existing liquid crystal display with touch function, if touch electrodes and lines are arranged on the surface side of the liquid crystal display to make the liquid crystal display have the function of touch control, if the same fingerprint recognition function is required, the fingerprint recognition The electrode and wiring structure are arranged on one side of the liquid crystal display in a laminated manner, so that the liquid crystal display has the function of fingerprint recognition. Although this design can achieve the functions of touch and fingerprint recognition required by users, At this stage, hand-held mobile devices are developing towards thinning. Therefore, if the fingerprint recognition structure and electrodes and the touch structure and electrodes are respectiv...

AI Technical Summary

Problems solved by technology

[0002] In the existing liquid crystal display with touch function, if touch electrodes and lines are arranged on the surface side of the liquid crystal display to make the liquid crystal display have the function of touch control, if the same fingerprint recognition function is required, the fingerprint recognition The electrode and wiring structure are arranged on one side of the liquid crystal display in a laminated manner, so that the liquid crystal display has the function of fingerprint recognition. Although this design can achieve the functions of touch and fingerprint recognition required by users, At this stage, hand-held mobile devices are developing towards thinning. Therefore, if the fingerprint recognition structure and electrodes and the touch structure and electrodes are respectively arranged on the liquid crystal display layer by layer using the stacking method, it will not be able to meet the thinning requirements. Moreover, fingerprint recognition The image input can be divided into optical scanning, thermal image sensing, capacitive sensing, etc.

Due to the large size of the device, the consideration of power consumption or the complexity of the manufacturing process, the yield rate is not good, and it is generally easy to be deceived by fake fingerprints, which makes it difficult to apply to handheld mobile devices, and the accuracy and reliability of thermal image sensing are not good. Therefore, capacitive image sensing has gradually become the mainstream technology for biometric identification in mobile electronic devices

[0003] However, the distance between the fingerprint identification chip and the surface glass is also an important design point. When the distance between the fingerprint identification chip and the surface where the fingerprint is detected is too far, it is easy to cause misjudgment by the fingerprint identification chip. Therefore, the existing fingerprint identification structure Can only be set on the surface of the LCD display

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