Display unit, display panel and display device
A display unit and display panel technology, applied in the directions of identification devices, optical components, electrical components, etc., can solve the problems of increasing the non-display area, unable to apply full-screen borderless flexible display products, and unavoidable fingerprint recognition, etc. The effect of experience
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Embodiment 1
[0034] Specifically, refer to figure 1 Shown is a schematic structural diagram of an embodiment of the display unit provided by the present invention. The display unit 1 includes: a photochromic film 12 and an optical filter film 11 arranged on one side of the photochromic film 12; optionally, the photochromic film 12 is made of a reversible photochromic material, using Based on the characteristics of the reversible photochromic material, the photochromic film 12 presents a colored state under the first predetermined light 2 and a transparent state under the second predetermined light 4; the optical filter film 11 It is used to only allow the first predetermined light 2 to pass through and shine on the photochromic film 12; the other side of the photochromic film 12 is provided with a light emitting unit 3, and the light emitting unit 3 is used to emit the first Two preset light4. That is to say, by using the color-changing properties of the reversible photochromic material,...
Embodiment 2
[0042] refer to Figure 4 and Figure 5 As shown, a structure of a display panel using the above display unit is disclosed, wherein, Figure 4 A schematic structural view of an embodiment of the display panel provided by the present invention; Figure 5 A schematic structural diagram of another embodiment of the display panel provided by the present invention. Specifically, the display panel includes a flexible cover 7, a light-emitting unit 3, and a display unit 1; the flexible cover 7 is arranged on the side of the display unit 1 close to the light-emitting unit 3 and makes the photochromic The film 12 is close to the flexible cover 7; the second preset light 4 emitted by the light emitting unit 3 enters the photochromic film 12 through the flexible cover 7, and the first preset light 2 Pass through the optical filter film 11 and enter the photochromic film 12;
[0043] Alternatively, the flexible cover 7 is arranged on the side of the display unit 1 away from the light-...
Embodiment 3
[0052] refer to Figure 8 As shown in FIG. 2 , it is a flow chart of realizing fingerprint recognition by the display device provided by the present invention. It can be seen from the figure that after the external light is incident on the flexible cover, since the optical filter film under the flexible cover has the performance of transmitting ultraviolet light and reflecting visible light, only ultraviolet light is incident on the photochromic film layer, and the photochromic film absorbs Ultraviolet light makes spirooxazine or spiropyran ring-open in photoresponse, and at the same time, polyvinylidene chloride-methyl acrylate can release hydrogen chloride to stabilize the ring-opening state of doped spirooxazine or spiropyran, so that all The above display unit exhibits stable fluorescence after being irradiated by ultraviolet light.
[0053] Optionally, the wavelength range of the ultraviolet light is 200nm-300nm, preferably 254nm; usually, the film emits fluorescence wit...
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