A display device and electronic device
A display device and display array technology, which is applied to circuits, electrical components, electrical solid-state devices, etc., can solve problems such as poor fingerprint recognition accuracy, and achieve the effect of improving accuracy and avoiding crosstalk of photosensitive units.
Active Publication Date: 2021-02-05
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Problems solved by technology
[0005] The optical fingerprint sensor has multiple photosensitive units, which are used to collect the light signal reflected by the fingerprint area directly above the area to form a fingerprint image of the area. The photosensitive unit is easily interfered by the reflected light signal from other areas of the finger, resulting in fingerprint identification. poor precision
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] refer to figure 1 , figure 1 It is a schematic structural diagram of a display device integrated with an optical fingerprint sensor. An optical fingerprint sensor 12 is integrated on the back of the OLED display panel 11. In this way, compared with the traditional capacitive fingerprint sensor, there is no need to set an opening on the surface of the display panel to place the capacitive fingerprint sensor. The fingerprint sensor can increase the scree...
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Abstract
The invention discloses a display device and electronic equipment. The technical solution of the invention is that there is a first structural layer between the display array and the optical fingerprint sensor, and the first structural layer is located on the side facing the optical fingerprint sensor. The second structure layer on the surface; the refractive index of the first structure layer is greater than the refractive index of the second structure layer; there is a polysilicon active layer between the display array and the optical fingerprint sensor, and the second structure layer on the side of the polysilicon active layer facing the optical fingerprint sensor. During fingerprint collection, the optical signal containing fingerprint information passes through the OLED display panel and enters the optical fingerprint sensor, and passes through the first structural layer and the second structural layer in turn. Due to the large refractive index of the first structural layer, Total reflection will occur at the interface between the two, which can cause total reflection of the light signal incident at a large angle, thereby avoiding the crosstalk problem of the photosensitive unit in the optical fingerprint sensor.
Description
technical field [0001] The present invention relates to the technical field of electronic equipment, and more specifically, to a display device and electronic equipment. Background technique [0002] With the continuous development of science and technology, more and more electronic devices with display functions are widely used in people's daily life and work, which brings great convenience to people's daily life and work, and has become an indispensable essential tool. [0003] The functions of electronic devices are becoming more and more powerful, and the personal information stored in them is more and more important. In order to ensure the security of personal information, electronic devices need to have identification functions. Fingerprint identification methods are highly secure and easy to use, etc. The advantages have become the mainstream way for current electronic devices to identify themselves. [0004] The main component of an electronic device to realize a d...
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IPC IPC(8): H01L27/32G06K9/00
CPCG06V40/1318H10K59/40H10K59/12
Inventor 杨星星
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD