Fingerprint identification display panel and fabricating method thereof, fingerprint identification display device
地域：
Beijing
摘要
A fingerprint identification display panel includes: a substrate; a plurality of sub-pixel regions including a plurality of first, second sub-pixel regions. A first driving circuit and a first light-emitting unit electrically connected thereto are sequentially disposed on the substrate and located in the plurality of first sub-pixel regions. A light shielding layer having through holes are disposed on the substrate. A plurality of light detection units are disposed at a side of the light shielding layer adjacent to the substrate, and corresponds to through holes one by one. At least one through hole is disposed in the second sub-pixel region, and a ratio of an area of an orthographic projection of the through hole on the substrate to an area of an orthographic projection of the second sub-pixel region on the substrate is greater than or equal to 30%.
說明書
This application is based upon and claims priority to Chinese Patent Application No. 201711328903.2, filed on Dec. 13, 2017, the entire contents thereof are incorporated herein by reference.
The present disclosure relates to the field of display technologies, and in particular, to a fingerprint identification display panel and a fabricating method thereof, and a fingerprint identification display device.
Due to the uniqueness of the fingerprint pattern, the fingerprint identification technology developed therewith is widely used for personal authentication. According to different methods of fingerprint acquisition and input, optical imaging, thermal sensitive sensors, human infrared sensors and the like are widely used and well-known.
The optical fingerprint identification panel is a fingerprint identification product that is currently known, in which pixels are used to emit light which is reflected and refracted on the touch surface of the finger and the panel, and then the received light is detected to realize fingerprint identification.
權(quán)利要求
What is claimed is:1. A fingerprint identification display panel comprising: a substrate; a plurality of sub-pixel regions defined by a plurality of gate lines and a plurality of data lines intersected; wherein: the plurality of sub-pixel regions comprise a plurality of first sub-pixel regions and a plurality of second sub-pixel regions; a first driving circuit and a first light-emitting unit electrically connected with the first driving circuit are sequentially disposed on the substrate and located in each of the plurality of first sub-pixel regions; a light shielding layer is disposed on the substrate and comprises a plurality of through holes; a plurality of light detection units are disposed at a side of the light shielding layer adjacent to the substrate, and the plurality of through holes are disposed to correspond to the plurality of light detection units one by one, wherein:the plurality of through holes are disposed in the second sub-pixel regions in one-to-one correspondence, and a ratio of an area of an orthographic projection of the through hole on the substrate to an area of an orthographic projection of the second sub-pixel region on the substrate is greater than or equal to 30%, wherein the orthographic projection is a projection in which a surface mapped using parallel lines to project its shape onto a plane, wherein second driving circuits and second light-emitting units electrically connected with the second driving circuits are disposed on the substrate and located in the second sub-pixel regions respectively, an orthographic projection of the second light-emitting unit on the substrate does not overlap with the orthographic projection of the through hole on the substrate, and an orthographic projection of the second driving circuit on the substrate does not overlap with the orthographic projection of the through hole on the substrate. 2. The fingerprint identification display panel according to claim 1 , wherein an area of the orthographic projection of the second driving circuit on the substrate is smaller than an area of an orthographic projection of the first driving circuit on the substrate. 3. The fingerprint identification display panel according to claim 2 , wherein the number of thin film transistors and capacitors comprised in the second driving circuit is smaller than the number of thin film transistors and capacitors comprised in the first driving circuit. 4. The fingerprint identification display panel according to claim 3 , wherein colors of light emitted by the second light-emitting units are the same as colors of light emitted by the first light-emitting units adjacent to the second sub-pixel regions respectively. 5. The fingerprint identification display panel according to claim 1 , wherein second transparent cathodes for driving the second light-emitting units to emit light are disposed on the substrate and located in the second sub-pixel regions, and first transparent cathodes for driving the first light-emitting units to emit light are disposed on the substrate and located in the first sub-pixel regions respectively, the first transparent cathodes and the second transparent cathodes are formed in an integrated structure, and an orthographic projection of the second transparent cathode on the substrate covers the orthographic projection of the through hole on the substrate. 6. The fingerprint identification display panel according to claim 1 , wherein the ratio of the area of the orthographic projection of the through hole on the substrate to the area of the orthographic projection of the second sub-pixel region on the substrate is about 50%. 7. A fingerprint identification display device comprising the fingerprint identification display panel according to claim 1 . 8. A fabricating method for a fingerprint identification display panel, the panel comprising a plurality of sub-pixel regions defined by a plurality of gate lines and a plurality of data lines intersected, the plurality of sub-pixel regions comprising a plurality of first sub-pixel regions and a plurality of second sub-pixel regions, the fabricating method comprises:providing a substrate; forming a first driving circuit and a first light-emitting unit electrically connected with the first driving circuit sequentially on the substrate and in each of the first sub-pixel regions; forming a light shielding layer having a plurality of through holes on the substrate; forming a plurality of light detection units at a side of the light shielding layer adjacent to the substrate, and disposing the plurality of through holes to correspond to the plurality of light detection units one by one, wherein: the plurality of through holes are disposed in the second sub-pixel regions in one-to-one correspondence, and a ratio of an area of an orthographic projection of the through hole on the substrate to an area of an orthographic projection of the second sub-pixel region on the substrate is greater than or equal to 30%, wherein the orthographic projection is a projection in which a surface mapped using parallel lines to project its shape onto a plane, wherein second driving circuits and second light-emitting units electrically connected with the second driving circuits are disposed on the substrate and located in the second sub-pixel regions respectively, an orthographic projection of the second light-emitting unit on the substrate does not overlap with the orthographic projection of the through hole on the substrate, and an orthographic projection of the second driving circuit on the substrate does not overlap with the orthographic projection of the through hole on the substrate.
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