LCD module with fingerprint recognition

Abstract

A liquid crystal module with fingerprint recognition, comprising: an array of glass substrates, a color filter glass substrate, a liquid crystal material layer, a pixel display layer, a detection wiring and a sensing electrode layer; the liquid crystal material layer, pixel display layer, detection wiring and sensing electrode layer are arranged between the array of glass substrates and the color filter glass substrate, and the present invention further achieves the Display and detect fingerprint identification and touch control composite functions.

Description

technical field [0001] A liquid crystal module with fingerprint recognition, especially a liquid crystal module with fingerprint recognition and touch functions. Background technique [0002] The existing liquid crystal display with touch function is mainly to set touch electrodes and lines on the surface side of the liquid crystal display to make the liquid crystal display have the function of touch control. 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, it is currently At this stage, hand-held mobile devices are developing toward 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 stack...

AI Technical Summary

Problems solved by technology

[0002] The existing liquid crystal display with touch function is mainly to set touch electrodes and lines on the surface side of the liquid crystal display to make the liquid crystal display have the function of touch control. 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, it is currently At this stage, hand-held mobile devices are developing toward thinning. Therefore, if the fingerprint identification 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, the fingerprint identification 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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