Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises an array substrate and a color film substrate which is opposite to the array substrate; the array substrate comprises a plurality of photosensors; the color film substrate comprises a first substrate, a first light shielding layer and at least one second light shielding layer; the first light shielding layeris positioned on the side, which is close to the array substrate, of the first substrate; the first light shielding layer comprises a plurality of first hollowed-out portions; the second light shielding layers are positioned on the side, which is close to the array substrate, of the first light shielding layer; each second light shielding layer comprises a plurality of second hollowed-out portions; in the direction which is perpendicular to the plane where the first substrate is located, the orthographic projections of the first hollowed-out portions, the orthographic projections of the secondhollowed-out portions and the orthographic projections of the photosensors are overlapped; and a first flat layer is arranged between the first light shielding layer and the second light shielding layers. Compared with the prior art, the display panel has the advantages that the fingerprint recognition principle can be improved effectively, and the light shielding layers are simple in structure and easy to manufacture.

Description

technical field [0001] The present invention relates to the field of display technology, and more particularly, to a display panel and a display device. Background technique [0002] With the popularization of mobile display products, information security has attracted people's attention. Due to the advantages of uniqueness, difficulty in duplication, and security of fingerprints, fingerprint recognition technology has been widely used in mobile display products in recent years, as a way of identity authentication and access control, making mobile display products safe and easy to operate performance is greatly improved. [0003] Fingerprint recognition is mainly divided into three types: capacitive fingerprint recognition, ultrasonic fingerprint recognition and optical fingerprint recognition. Capacitive fingerprint recognition uses the fingerprint sensing electrode and the conductive subcutaneous electrolyte to form an electric field. The fluctuation of the fingerprint ca...

AI Technical Summary

Problems solved by technology

[0003] Fingerprint recognition is mainly divided into three types: capacitive fingerprint recognition, ultrasonic fingerprint recognition and optical fingerprint recognition. Capacitive fingerprint recognition uses the fingerprint sensing electrode and the conductive subcutaneous electrolyte to form an electric field. The fluctuation of the fingerprint causes the pressure difference between the two. There are different changes to realize fingerprint measurement. Although this fingerprint recognition method has strong adaptability, it is difficult to meet the development trend of full-screen display products; The current technology is not yet mature; optical fingerprint recognition uses the principle of refraction and reflection of light, puts the finger on the optical lens, and realizes the sensor device to receive the difference of different fingerprint information through the reflection difference of the light on the surface of the finger. Forming a fingerprint image, the working principle is relatively simple, and it is more suitable for the full-screen design of display products, but because the sensing device used in the fingerprint recognition process is easily affected by light noise, it is difficult to improve the accuracy of fingerprint recognition

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