Display unit, display panel and display device

Abstract

The invention discloses a display unit, a display panel and a display device, which belong to the related technical field of displays. The display unit includes a photochromic film and an optical filter film arranged on one side of the photochromic film; the photochromic film is used to present a colored state under a first preset light, and to display a colored state under a second preset light. The bottom is in a transparent state; the optical filter film is used to allow only the first preset light to pass through and irradiate on the photochromic film; the other side of the photochromic film is provided with a light-emitting unit, and the light-emitting The unit is used to emit a second predetermined light. The present application can provide a display unit that can be integrated in the display area, which does not affect the normal display of the display area, and can display a certain area range when needed, thereby realizing corresponding identification or control functions and improving user experience.

Description

technical field [0001] The present invention relates to the technical field related to displays, in particular to a display unit, a display panel and a display device. Background technique [0002] With the development of display technology, terminal devices such as smartphones and tablet computers have become indispensable auxiliary devices in people's lives, and as these terminal devices store a large amount of personal information and other important data, their security has become increasingly difficult. especially important. At present, passwords, graphics, fingerprints and other forms are often used to realize the password protection of terminal equipment. Among them, fingerprints are composed of uneven skin lines on the surface of fingers, which are unique features of the human body, and their complexity can provide sufficient features for identification. Therefore, fingerprint recognition is to use the uniqueness and stability of fingerprints to realize identity re...

AI Technical Summary

Problems solved by technology

In addition, flexible display fingerprint recognition requires a dedicated fingerprint recognition area, that is, a certain recessed area on the front or back is required as a fingerprint recognition area, which will not only affect the overall appearance of the product, but also increase the non-display area , cannot be applied to full-screen borderless flexible display products

However, with the increasing market demand of the current screen-to-body ratio, the area of ​​the display area continues to increase, resulting in a reduction in the frame, making it an inevitable trend to integrate fingerprint recognition technology into the display area, and there is still a lack of corresponding solutions.

[0004] Therefore, in the process of implementing the present application, the inventors found at least the following problems in the prior art: In order to realize the design of narrow frame or full screen, it is currently difficult to integrate the corresponding identification or control technology into the display area, especially for fingerprint identification For example, it is unavoidable that there is a non-display area for identifying fingerprints

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