OLED display device and preparation method

Abstract

The present application discloses an OLED display device and a preparation method. The OLED display device includes: a flexible substrate, a fingerprint identification sensor, a TFT array layer, an OLED light-emitting functional layer, a color filter layer and a thin film encapsulation layer; wherein the thin film The outermost layer of the packaging layer is provided with a first via hole, and the first via hole is located above the fingerprint identification sensor; the first via hole is also filled with a collimating mirror structure, and the collimating mirror structure is used for The reflected light energy reflected by the fingerprint of the finger is concentrated in different directions, and the reflected light energy reflected in the vertical direction is concentrated on the fingerprint identification sensor. The embodiments of the present application can effectively improve the recognition efficiency and recognition accuracy of the fingerprint recognition sensor in the OLED display device while reducing the overall thickness of the OLED display device.

Description

technical field [0001] The present application relates to the field of display technology, and in particular, to an OLED display device and a preparation method thereof. Background technique [0002] OLED (Organic Light-Emitting Diode, OLED for short) device, also known as organic electric laser display device, has the advantages of low voltage demand, high power saving efficiency, fast response, light weight, thin thickness, simple structure, low cost, wide viewing angle, almost The advantages of infinitely high contrast ratio, low power consumption, and extremely high response speed have become one of the most important display technologies today, and are gradually replacing the thin film transistor-liquid crystal display (TFT-LCD), which is expected to be Become the next mainstream display technology after LCD. [0003] Polarizer (POL) can effectively reduce the reflectivity of the panel under strong light, but it loses nearly 58% of the light output. This greatly incre...

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Problems solved by technology

[0006] The embodiment of the present application provides an OLED display device and a preparation method, which can effectively improve the recognition efficiency and recognition accuracy of the fingerprint recognition sensor in the OLED display device with a POL-less structure, so as to solve the problem of OLED display devices and preparation methods in the prior art. In the integration of POL-less structure and optical fingerprint recognition technology, the black matrix in the color film layer can easily block the reflected light reflected by the finger, resulting in the technical problem of low recognition efficiency of the fingerprint sensor.

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