OLED display device with under-screen fingerprint recognition function

Abstract

The invention provides an OLED display device with an under-screen fingerprint identification function. The OLED display device with the under-screen fingerprint recognition function comprises an OLEDdisplay panel and a fingerprint recognition module arranged under the OLED display panel. The OLED display panel comprises a substrate and a plurality of sub-pixels which are arranged on the substrate and are arranged in an array mode. The substrate comprises an effective display area, the sub-pixels are located in the effective display area, a fingerprint identification block is arranged in theeffective display area, and the fingerprint identification module is arranged corresponding to the fingerprint identification block; the number of thin film transistors in the sub-pixels located in the fingerprint identification block is smaller than the number of thin film transistors in the sub-pixels located outside the fingerprint identification block. By reducing the number of the thin film transistors in the sub-pixels in the fingerprint identification block, the film stacking of the fingerprint identification block can be reduced, and the penetration rate of the fingerprint identification block and the accuracy of fingerprint identification are improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display device with under-screen fingerprint recognition. Background technique [0002] With the development of display technology, flat panel display devices are widely used in mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktops, etc. Various consumer electronic products such as computers have become the mainstream of display devices. [0003] Organic Light Emitting Display (OLED) has self-illumination, no backlight, high contrast, thin thickness, wide viewing angle, fast response, can be used for flexible panels, wide operating temperature range, structure It is considered to be an emerging application technology for the next generation of flat panel displays due to its excellent characteristics such as simple manufacturing process. [0004] OLED display devices generally include: a substrate, an anode disposed on th...

AI Technical Summary

Problems solved by technology

[0005] Fingerprint identification technology, as a kind of biometric identification technology, has the characteristics of universality, uniqueness, security and collectability. It has been widely used in smart phones and other products. With the rise of full-screen technology, fingerprint identification is gradually The design is developed from the outside of the display to the inside of the display, that is, the under-screen fingerprint recognition technology, in order to pursue a higher screen-to-body ratio. However, the working principle of OLED display devices with under-screen fingerprint recognition on the market is: OLED emits light After passing through the screen, it is reflected by the finger and passes through the screen again, and is captured by the fingerprint recognition sensor. The film layers in the display area have very low transmittance, resulting in low brightness received by the fingerprint recognition sensor, which reduces the accuracy of fingerprint recognition

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