Under-screen fingerprint device and display module
A technology of fingerprint device and display screen, which is applied in the directions of acquiring/arranging fingerprints/palmprints, detecting live finger shapes, character and pattern recognition, etc., and can solve problems such as potential safety hazards
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Embodiment 1
[0049] In this example, see figure 2 and image 3 , figure 2 Shown is the corresponding relationship between the light path guiding structure 12, the filter film layer 13 and the microlens 14 in the plan view direction, image 3 for figure 2 The schematic cross-sectional view along the A1-A2 direction in . exist figure 2 Among them, each small square is a photosensitive unit of the photosensitive sensor array 11, and the area corresponding to each photosensitive unit on the light path guiding structure 12 is provided with a first light-transmitting hole 120 as required, wherein the square with a small hole inside It indicates that the area corresponding to the photosensitive unit of the light path guiding structure 12 is provided with a first light transmission hole 120, and the square without a small hole inside indicates that the area of the light path guiding structure 12 corresponding to the photosensitive unit is not provided with a first light transmission hole...
Embodiment 2
[0072] This embodiment is a further improvement of the above-mentioned embodiment 1. On the basis of the above-mentioned embodiment 1 and its modified embodiments, the wavelength band and The colors of the light emitted by the pixels corresponding to the filter films on the display screen 2 are the same. It can be understood that the light emitted by a pixel of a certain color on the display screen 2 will reach the corresponding pixel on the filter film layer 13 when it is reflected by a finger or other fingerprint texture information carriers in the fingerprint recognition area of the display screen and then shoots downward. In the filter area, when encountering a filter film of the same color, more light will pass through the filter film, thereby facilitating the photosensitive unit of the photosensitive sensor array 11 to perform better and more accurate spectrum recognition processing, thereby It helps to improve the accuracy and success rate of live fingerprint detectio...
Embodiment 3
[0074] This embodiment is a further improvement of the above-mentioned embodiment 1 and embodiment 2. On the basis of the above-mentioned embodiment 1 and its variant embodiments and embodiment 2, the under-screen fingerprint device 1 includes at least one supplementary light unit 15, so The supplementary light unit 15 is arranged on the edge area of the substrate 10, and is used to emit light to the fingerprint identification area on the display screen 2, and the light emitted by each supplementary light unit 15 can pass through at least one of the filters. light film. For example, the supplementary light unit 15 emits white light, and the white light can pass through various filter films; while the supplementary light unit 15 emits red light, the red light can pass through a filter film that allows red visible light to pass through. By setting the supplementary light unit 15, on the one hand, the brightness of the light emitted to the fingerprint recognition area of the ...
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