WO2022073286A1 - 指纹识别显示面板及指纹识别显示装置 - Google Patents
指纹识别显示面板及指纹识别显示装置 Download PDFInfo
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- WO2022073286A1 WO2022073286A1 PCT/CN2020/130789 CN2020130789W WO2022073286A1 WO 2022073286 A1 WO2022073286 A1 WO 2022073286A1 CN 2020130789 W CN2020130789 W CN 2020130789W WO 2022073286 A1 WO2022073286 A1 WO 2022073286A1
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- electrode
- fingerprint identification
- display panel
- electrodes
- touch
- Prior art date
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
- H10K59/65—OLEDs integrated with inorganic image sensors
Definitions
- the present application relates to the field of display technology, and in particular, to a fingerprint identification display panel and a fingerprint identification display device using the fingerprint identification display panel.
- Fingerprint recognition technology has been widely used in many fields such as mobile phones, notebook computers, and attendance machines due to its good security and ease of use.
- fingerprint recognition devices are fingerprint modules that work alone.
- the fingerprint recognition modules on mobile phones are currently divided into three categories: one is the front independent button This design is convenient for users to operate, but affects the screen ratio of the mobile phone; the other type is the button type placed on the back or side of the mobile phone. Since the user cannot see the position of the fingerprint unlocking, the finger needs to be placed on the mobile phone. Fumbling affects the user experience; the in-screen fingerprint recognition that has emerged in recent years is the third type of fingerprint recognition.
- This design overcomes the defects of the first two designs, but the existing in-screen fingerprint recognition uses on-screen fingerprint recognition.
- An independent optical or ultrasonic fingerprint recognition module is attached to the bottom, which leads to an overall larger thickness of the display screen, which affects the design of the whole machine mechanism and increases the production cost of the product at the same time.
- the existing in-screen fingerprint recognition technology uses an independent optical or ultrasonic fingerprint recognition module attached to the bottom of the screen, which leads to the problems that the overall thickness of the display screen is too large and the production cost is too high.
- the present application provides a fingerprint recognition display panel, which has a display area, and the fingerprint recognition display panel includes:
- a display substrate comprising a cathode disposed in the display area
- a first fingerprint identification electrode disposed in the display area, and disposed in the same layer as the cathode
- the second fingerprint identification electrode is disposed in the display area, and is disposed up and down corresponding to the first fingerprint identification electrode.
- the first fingerprint identification electrode includes a first electrode block and a first electrode line electrically connected to the first electrode block, and the first electrode line extends along a first direction.
- the fingerprint identification display panel of the present application includes a plurality of the first fingerprint identification electrodes, and the plurality of the first fingerprint identification electrodes are parallel to each other.
- the second fingerprint identification electrode includes a second electrode block and a second electrode line electrically connected to the second electrode block, and the second electrode line extends along the second direction.
- the fingerprint identification display panel of the present application includes a plurality of the second fingerprint identification electrodes, and the plurality of the second fingerprint identification electrodes are parallel to each other.
- the first electrode block and the second electrode block are arranged correspondingly up and down.
- the shape of the first electrode block is a polygon or a circle.
- the shape of the second electrode block is a polygon or a circle.
- it further includes a thin film encapsulation layer covering the cathode and the first fingerprint identification electrode, and the second fingerprint identification electrode is disposed on the thin film encapsulation layer.
- the fingerprint identification display panel further includes touch electrodes disposed on the thin film encapsulation layer, and the touch electrodes are used to realize the touch function of the fingerprint identification display panel.
- the touch electrodes include touch electrode blocks and touch electrode lines electrically connected to the touch electrode blocks.
- the size of the first electrode block and the size of the second electrode block are both smaller than the size of the touch electrode block.
- the touch electrodes include a first touch electrode, a second touch electrode and a bridge electrode, and the first touch electrode intersects the second touch electrode at the intersection of the first touch electrode and the second touch electrode.
- the first touch electrodes on both sides of the second touch electrodes are electrically connected through the bridge electrodes.
- the first touch electrodes, the second touch electrodes and the second fingerprint recognition electrodes are all located on the same layer of the fingerprint recognition display panel.
- a first passivation layer is disposed on the first touch electrode, the second touch electrode and the second fingerprint identification electrode, and the bridge electrode is disposed on the first passivation layer. on the first passivation layer, and electrically connected to the first touch electrode through the via hole on the first passivation layer.
- a fingerprint identification lead is further included, and the bridge electrode and the fingerprint identification lead are both disposed on the second passivation layer.
- the first fingerprint identification electrode and the cathode are made of the same conductive material
- the second fingerprint identification electrode is made of a three-layer composite structure of indium tin oxide, silver and indium tin oxide. material making.
- the display substrate further includes a base substrate, an array layer disposed on the base substrate, and a light-emitting layer disposed on the array layer, the cathode and the The first fingerprint identification electrode is disposed on the light-emitting layer.
- the present application also provides a fingerprint identification display device, including a fingerprint identification display panel;
- the fingerprint identification display panel has a display area, and the fingerprint identification display panel includes:
- a display substrate comprising a cathode disposed in the display area
- a first fingerprint identification electrode disposed in the display area, and disposed in the same layer as the cathode
- the second fingerprint identification electrode is disposed in the display area, and is disposed up and down corresponding to the first fingerprint identification electrode.
- the first fingerprint identification electrode includes a first electrode block and a first electrode line electrically connected to the first electrode block;
- the second fingerprint identification electrode includes a second electrode block and a second electrode wire electrically connected to the second electrode block;
- the fingerprint identification display device further includes a touch electrode, and the touch electrode includes a touch electrode block and a touch electrode line electrically connected to the touch electrode block;
- the size of the first electrode block and the size of the second electrode block are both smaller than the size of the touch electrode block.
- the fingerprint identification display panel and the fingerprint identification display device provided by the present application include fingerprint identification electrodes for realizing the fingerprint identification function and touch electrodes for realizing the touch function.
- the cathode of the display panel is arranged on the same layer, which overcomes the defect that the cathode signal interferes with fingerprint identification caused by the cathode and fingerprint identification electrodes in the prior art, which is beneficial to improve the accuracy and sensitivity of fingerprint identification.
- the identification electrodes are integrated on both sides of the thin film encapsulation layer, which improves the integration of the fingerprint identification electrodes and the display panel, and reduces the overall thickness and manufacturing cost of the display panel compared to the prior art.
- FIG. 1 is a schematic cross-sectional structure diagram of a fingerprint identification display panel provided by an embodiment of the present application
- FIG. 2 is a perspective view of a layer where a cathode of a fingerprint identification display panel provided by an embodiment of the present application is located;
- FIG. 3 is a schematic structural diagram of a first fingerprint identification electrode provided by an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of a second fingerprint identification electrode provided by an embodiment of the present application.
- FIG. 5 is a perspective view of a laminated structure of the first fingerprint identification electrode and the second fingerprint identification electrode provided by the embodiment of the present application;
- FIG. 6 is a perspective view of the touch electrode layer of the fingerprint identification display panel provided by the embodiment of the present application.
- Embodiments of the present application provide a fingerprint identification display panel and a fingerprint identification display device.
- the fingerprint identification display panel includes a fingerprint identification electrode for realizing a fingerprint identification function and a touch electrode for realizing a touch function.
- the fingerprint identification electrode is arranged on the same layer as the cathode of the display panel, which overcomes the defect that the cathode signal interferes with fingerprint identification caused by the cathode and the fingerprint identification electrode being arranged up and down in the prior art, and the fingerprint identification electrode described in this application is integrated in the thin film
- the integration degree of the fingerprint identification electrode and the display panel is improved, and compared with the prior art, the overall thickness and manufacturing cost of the display panel are reduced.
- FIG. 1 is a schematic cross-sectional structure diagram of a fingerprint identification display panel provided by an embodiment of the present application.
- the fingerprint recognition display panel has a display area and a non-display area, the display area undertakes the display function of the fingerprint recognition display panel, and the non-display area is used for setting various edge traces and devices , providing various energy sources and control signals for the display area to realize its functions.
- the fingerprint identification display panel includes a display substrate LE, and fingerprint identification electrodes 60 and touch electrodes 70 disposed on the display substrate LE, wherein the fingerprint identification electrodes 60 include a first fingerprint identification electrode 601 and a second fingerprint identification electrode 601.
- the electrodes 602, the first fingerprint identification electrode 601 and the second fingerprint identification electrode 602 are arranged correspondingly up and down to realize the fingerprint identification function.
- the display substrate LE is a component in the fingerprint recognition display panel for displaying a display function, and it also has a display area and a non-display area corresponding to the fingerprint recognition display panel.
- the electrodes 60 are arranged on the display substrate LE.
- the fingerprint recognition electrodes 60 are arranged in the display area, so that the fingerprint recognition function and the display function are integrated in the display area, and on the one hand, it is convenient for users to accurately find The fingerprint recognition area improves the smoothness and comfort of user operations, and on the other hand, is beneficial to increase the proportion of the display area.
- the display substrate LE includes a cathode 304, and the cathode 304 is disposed corresponding to the display area of the display substrate LE.
- the cathode 304 may be an integral metal electrode or a metal oxide electrode, and is used to provide energy and control signals for the display substrate LE to perform a display function.
- the first fingerprint identification electrode 601 and the cathode 304 are disposed in the same layer, and the first fingerprint identification electrode 601 and the cathode 304 do not overlap.
- the first fingerprint identification electrode 601 and the cathode 304 are made of the same material. It should be noted that when the first fingerprint identification electrode 601 and the cathode 304 are made of the same material, the first fingerprint identification electrode 601 and the cathode 304 are made of the same material.
- the same coating process can be used together with the cathode 304 to form an original conductive layer, and then in the fingerprint identification area, through a specific patterning process, the original conductive layer is processed to
- the formation of the first fingerprint identification electrode 601 eliminates the need for a separate coating operation for manufacturing the first fingerprint identification electrode 601 , which simplifies the overall manufacturing process of the fingerprint identification display panel and reduces the manufacturing cost.
- FIG. 2 is a perspective view of the layer where the cathode of the fingerprint identification display panel provided by the embodiment of the present application is located.
- the region where the first fingerprint identification electrode 601 is located is surrounded by the cathode 304 and is located at one edge of the region surrounded by the cathode 304 .
- the area where the first fingerprint recognition electrode 601 is located is the fingerprint recognition area in the fingerprint recognition display panel, and the area where the first fingerprint recognition electrode 601 is located is not limited to this embodiment, and is in the art Technicians can freely choose the placement position of the first fingerprint identification electrode 601 according to actual needs and user operating habits, and this application does not limit the size of the display area occupied by the first fingerprint identification electrode 601, which can also be based on actual conditions. Design requirements and user operating habits can be freely selected.
- the first fingerprint identification electrode 601 and the cathode 304 are disposed in the same layer, and there is no overlap between the two in the thickness direction of the fingerprint identification display panel, which overcomes the problem of the cathode and the fingerprint in the prior art.
- the second fingerprint identification electrode 602 is arranged corresponding to the upper and lower sides of the first fingerprint identification electrode 601 , and the first fingerprint identification electrode 601 and the second fingerprint identification electrode 602 together constitute the upper and lower sides of the fingerprint identification electrode 60 . layer electrodes.
- the first fingerprint recognition electrode 601 constitutes a driving electrode of the fingerprint recognition electrode 60.
- the first fingerprint recognition electrode 601 provides an active detection signal, so that the first fingerprint recognition A stable capacitance is formed between the electrode 601 and the second fingerprint identification electrode 602; the second fingerprint identification electrode 602 constitutes a sensing electrode of the fingerprint identification electrode 60, and the second fingerprint identification electrode is used for fingerprint identification during the fingerprint identification operation.
- the processor unit is used to collect fingerprint information, thereby realizing fingerprint identification.
- the first fingerprint identification electrode 601 and the cathode 304 are covered by a thin film encapsulation layer 603 , and the first fingerprint identification electrode 601 and the second fingerprint identification electrode 602 are respectively located on the thin film encapsulation layer 603 . opposite sides.
- the thin film encapsulation layer 603 is an insulating layer, which can be composed of an organic layer, an electrodeless layer, or a combination of an organic layer and an inorganic layer.
- the internal components perform the function of physical sealing.
- the second fingerprint identification electrode 602 may be a transparent metal electrode or a transparent metal oxide electrode, or a transparent electrode formed by combining a metal electrode and a metal oxide electrode, for example, the second fingerprint identification electrode
- the 602 can be made of a three-layer composite structure material of indium tin oxide, silver, and indium tin oxide, so that the second fingerprint identification electrode 602 has both good light transmittance and excellent electrical conductivity.
- FIG. 3 is a schematic structural diagram of a first fingerprint identification electrode provided by an embodiment of the present application
- FIG. 4 is a structural schematic diagram of a second fingerprint identification electrode provided by an embodiment of the present application.
- the first fingerprint recognition electrode 601 includes a first electrode block 6011 and a first electrode line 6012 electrically connected to the first electrode block 6011, and the first electrode line 6012 is along a first direction Y extends
- the second fingerprint identification electrode 602 includes a second electrode block 6021 and a second electrode line 6022 electrically connected to the second electrode block 6021, and the second electrode line 6022 extends along the second direction X.
- the fingerprint recognition display panel includes a plurality of the first fingerprint recognition electrodes 601 and a plurality of the second fingerprint recognition electrodes 602, and the plurality of the first fingerprint recognition electrodes 601 are parallel to each other, and Covering the entire fingerprint identification area, a plurality of the second fingerprint identification electrodes 602 are parallel to each other and cover the entire fingerprint identification area.
- each of the first electrode lines 6012 and the first electrode blocks 6011 connected in series constitute one of the first fingerprint recognition electrodes 601
- each of the second electrode lines 6022 and the The second electrode blocks 6021 connected in series constitute a piece of the second fingerprint identification electrode 602 .
- the shape of the first electrode block 6011 may be a polygon or a circle
- the shape of the second electrode block 6021 may also be a polygon or a circle, for example, the shape of the first electrode block 6011 and the
- the shapes of the second electrode blocks 6021 may be equilateral triangles, rhombus, pentagons, or the like.
- FIG. 5 is a perspective view of a laminated structure of the first fingerprint identification electrode 601 and the second fingerprint identification electrode 602 provided by the embodiment of the present application.
- the first electrode block 6011 and the second electrode block 6021 are arranged to overlap vertically, and the first fingerprint recognition electrodes 601 are arranged along the first direction Y, and the second fingerprint recognition electrode 601 is arranged along the first direction Y.
- the identification electrodes 602 are arranged along the second direction X, and the first fingerprint identification electrodes 601 and the second fingerprint identification electrodes 602 intersect, so that the fingerprint identification electrodes 60 form a network electrode matrix to realize the fingerprint identification electrodes 60 fingerprint positioning and identification functions.
- the first fingerprint recognition electrode 601 and the second fingerprint recognition electrode 602 are perpendicular to each other, and the first electrode block 6011 and the second electrode block 6021 overlap at their vertical intersections, thereby forming a regular
- the grid-shaped fingerprint recognition electrode matrix is beneficial to further improve the sensitivity and accuracy of fingerprint recognition.
- the fingerprint identification display panel provided by the embodiment of the present application can realize the fingerprint identification in the screen.
- the first fingerprint identification electrode By arranging the first fingerprint identification electrode in the same layer as the cathode of the display panel, it overcomes the problem that the cathode and the fingerprint identification electrode are arranged up and down in the prior art.
- the defect that the cathode signal interferes with fingerprint identification is beneficial to improve the sensitivity and accuracy of fingerprint identification in the screen, and the two poles of the fingerprint identification electrode are integrated on both sides of the thin film encapsulation layer, which improves the integration of the fingerprint identification electrode and the display panel. It is beneficial to reduce the overall thickness and manufacturing cost of the display panel.
- the fingerprint recognition display panel further includes touch electrodes 70 disposed on the thin film encapsulation layer 603 , and the touch electrodes 70 are used to realize the fingerprint recognition display The touch function of the panel.
- the touch electrodes 70 include first touch electrodes 701 and second touch electrodes 702, and the first touch electrodes 701 and the second touch electrodes 702 are disposed on the fingerprint recognition display panel.
- the first touch electrode 701 is disconnected at the intersection with the second touch electrode 702, and is located in the second touch electrode
- the first touch electrodes 701 on both sides of the electrode 702 are electrically connected by bridge electrodes 703 , so that the first touch electrodes 701 form a complete electrode penetrating the entire display area of the fingerprint recognition display panel.
- the second fingerprint recognition electrodes 602, the first touch electrodes 701 and the second touch electrodes 702 are all located in the same layer of the fingerprint recognition display panel, and the first touch electrodes 701 and the second touch electrode 702 can be made of the same material as the second fingerprint identification electrode 602 . It should be noted that, when the first touch electrodes 701 and the second touch electrodes 702 and the second fingerprint recognition electrodes 602 are made of the same material, the same coating process can be used to form the above three types of electrodes together.
- the original conductive layer of the electrode is then processed through a patterning process to form the second fingerprint recognition electrode 602, the first touch electrode 701 and the second touch electrode 702, respectively, thereby simplifying
- the overall manufacturing process of the fingerprint identification display panel is improved, and the manufacturing cost is reduced; in addition, the embodiment of the present application does not need to provide a separate film layer structure for the first touch electrode 701 and the second touch electrode 702, and there are It is beneficial to further reduce the overall thickness of the fingerprint identification display panel, improve the integration of the touch function and the fingerprint identification function of the fingerprint identification display panel, and promote the realization of the thin and light design of the fingerprint identification display panel.
- a first passivation layer 704 is disposed on the first touch electrode 701 , the second touch electrode 702 and the second fingerprint identification electrode 602 , and the first passivation layer 704 is an insulating layer .
- the bridge electrodes 703 are disposed on the first passivation layer 704 and are electrically connected to the first touch electrodes 701 through via holes on the first passivation layer 704 .
- the first passivation layer 704 is further provided with a fingerprint identification lead 604, and the fingerprint identification lead 604 is electrically connected to the first fingerprint identification electrode 601 and/or the second fingerprint identification electrode 602 , is used to transmit the driving signal and the sensing signal, so as to connect the first fingerprint identification electrode 601 and/or the second fingerprint identification electrode 602 with the external processor unit.
- the fingerprint identification lead 604 is made of a material with titanium/aluminum/titanium three-layer conductive metal layers, so as to ensure that the fingerprint identification lead 604 has a lower impedance and further improve the accuracy and sensitivity of fingerprint identification.
- FIG. 6 is a perspective view of the touch electrode layer of the fingerprint identification display panel provided by the embodiment of the present application.
- the touch electrode 70 includes a touch electrode block 70a and a touch electrode line 70b electrically connected to the touch electrode block 70a.
- the touch electrode block 70a and the touch electrode The line 70b is disposed on the same layer as the second fingerprint identification electrode 602 .
- the size of the first electrode block 6011 in the first fingerprint recognition electrode 601 and the size of the second electrode block 6021 in the second fingerprint recognition electrode 602 are both smaller than the size of the touch electrode block 70a , it should be noted that the size of the first electrode block 6011 may refer to the perimeter of the first electrode block 6011, or the length of a characteristic side of the first electrode block 6011, for example, when the first electrode block 6011 is When the shape of an electrode block 6011 is a circle, its size can refer to the circumference or radius of the circle, and when the shape of the first electrode block 6011 is a rhombus, its size can refer to the perimeter or the radius of the rhombus. side length; the size of the second electrode block 6021, the size of the touch electrode block 70a and the size of the first electrode block 6011 all refer to the same size, for example, they can all refer to the side length, or Circle radius, or perimeter.
- the first electrode block 6011, the shape of the second electrode block 6021 and the shape of the touch electrode block 70a are all rhombus, then the first electrode block 6011 and the second electrode block 6011 and the second The side lengths of the electrode blocks 6021 are all less than 70 ⁇ m, and the side lengths of the touch electrode blocks 70 a are greater than 3 mm.
- the size of the electrode block is directly related to the accuracy of touch or fingerprint recognition, specifically: when the size of the electrode block is smaller, the corresponding touch or fingerprint recognition The precision is also higher, but the manufacturing cost is also higher; in the embodiment of the present application, the size of the first electrode block 6011 and the size of the second electrode block 6021 are both set smaller than the size of the touch electrode block 70a , which is conducive to taking into account the high precision of fingerprint recognition and the optimization of the production cost.
- the fingerprint identification display panel further includes a second passivation layer 80 disposed on the bridge electrode 703 and the fingerprint identification lead 604 , and the second passivation layer 80 has electrical insulation and physical protection, such as preventing abrasion and water vapor erosion.
- the display substrate LE is an organic light emitting diode display substrate, including a base substrate 10 , a buffer layer 40 disposed on the base substrate 10 , and an array layer disposed on the buffer layer 40 20 .
- the flat layer 50 disposed on the array layer 20 , and the light-emitting layer 30 disposed on the flat layer 50 .
- the base substrate 10 may include insulating materials, such as polyimide, glass, quartz or ceramics, etc.; the buffer layer 40 is disposed on the base substrate 10, and the buffer layer 40 may be Including a variety of organic materials or inorganic materials; the array layer 20 includes a semiconductor layer 201, a first gate insulating layer 202, a first gate 203, a second gate insulating layer 204, a second gate 205, and interlayer insulation layer 206 and source-drain electrodes 207, the semiconductor layer 201 is arranged on the buffer layer 40, the substrate material of the semiconductor layer 201 can be N-type or P-type polysilicon semiconductor, or metal oxide semiconductor; the first gate The insulating layer 202 is arranged on the semiconductor layer 201, and its material can be insulating materials including silicon nitride or silicon oxide; the first gate 203 is arranged on the first gate insulating layer 202, and the first gate The material of the gate electrode 203 can be metal material Mo, the semiconductor layer 201 can be divided
- the second gate 205 is arranged on the second gate insulating layer 204, the material can be metal Mo, the second gate 205 and the first gate 203 constitute the upper and lower electrodes of the storage capacitor;
- layer The interlayer insulating layer 206 covers the second gate 205, and its material can be insulating materials including silicon nitride or silicon oxide;
- the source and drain electrodes 207 are arranged on the interlayer insulating layer 206, and its material is gold, One or more of silver, copper, lithium, sodium, potassium, magnesium, aluminum, zinc and combinations thereof, the source-drain electrode 207 passes through the interlayer insulating layer 206 and the second gate insulating layer 204 and the via holes on the first gate insulating layer 202 are electrically connected to the source and drain electrodes of the semiconductor layer 201;
- the flat layer 50 is arranged on the source and drain electrodes 207, and its material can be made of nitride Silicon or silicon oxide and other insulating materials;
- the light-emitting layer 30
- the organic functional layer 303 is in contact with the anode 301 through the opening of the pixel definition layer 302, the cathode 304 is disposed on the pixel definition layer 302, and is connected to the pixel definition layer 302 through the opening of the pixel definition layer 302.
- the organic functional layer 303 is in contact.
- Embodiments of the present application further provide a fingerprint identification display device, where the fingerprint identification display device includes the fingerprint identification display panel provided by the embodiments of the present application.
- the fingerprint identification display device may be a mobile phone, a tablet computer, a notebook computer, a TV, a navigator, and the like.
- the fingerprint identification display panel and the fingerprint identification display device include fingerprint identification electrodes for realizing the fingerprint identification function and touch electrodes for realizing the touch function.
- the electrodes are arranged in the same layer as the cathode of the display panel, which overcomes the defect of the cathode signal interfering with fingerprint identification caused by the arrangement of the cathode and the fingerprint identification electrode on top of each other in the prior art, and is beneficial to improve the accuracy and sensitivity of fingerprint identification.
- the fingerprint identification electrodes are integrated on both sides of the thin film encapsulation layer, which improves the integration of the fingerprint identification electrodes and the display panel, and reduces the overall thickness and manufacturing cost of the display panel compared to the prior art.
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Abstract
一种指纹识别显示面板及指纹识别显示装置，指纹识别显示面板包括显示基板(LE)，显示基板(LE)包括阴极(304)，第一指纹识别电极(601)与阴极(304)同层设置，第二指纹识别电极(602)与第一指纹识别电极(601)上下对应设置。通过将第一指纹识别电极(601)与显示面板的阴极(304)同层设置，提高了显示面板的集成度，有利于降低显示面板的整体厚度和制作成本。
Description
本申请涉及显示技术领域，尤其涉及一种指纹识别显示面板及应用该指纹识别显示面板的指纹识别显示装置。
指纹识别技术由于具有良好的安全性和使用便捷性已经在手机、笔记本电脑、考勤机等众多领域大量普及。但是目前的指纹识别设备大都是单独工作的指纹模组，以目前指纹识别技术应用最普遍的手机指纹识别来看，手机上的指纹识别模组目前分为3类：一类是正面的独立按键式，这种设计可以方便用户操作，但是影响手机的屏占比；另一类是放置在手机背面或者侧面的按键式，这种设计由于用户看不到指纹解锁的位置，需要手指在手机上摸索，影响用户体验；近年来兴起的屏内指纹识别是第三类指纹识别形式，这种设计很好的克服了前两种设计的缺陷，但是现有的屏内指纹识别采用的是在屏幕下方贴合独立的光学或者超声波式的指纹识别模组，导致显示屏的厚度整体偏大，进而影响整机机构的设计，而且会同时抬高产品制作成本。
现有的屏内指纹识别技术采用在屏幕下方贴合独立的光学或者超声波式的指纹识别模组，该技术会导致显示屏的厚度整体偏大和制作成本偏高的问题。
为了解决上述技术问题，本申请提供的解决方案如下：
本申请提供一种指纹识别显示面板，具有显示区，所述指纹识别显示面板包括：
显示基板，包括阴极，所述阴极设置于所述显示区内；
第一指纹识别电极，设置于所述显示区内，与所述阴极同层设置；以及
第二指纹识别电极，设置于所述显示区内，与所述第一指纹识别电极上下对应设置。
在本申请的指纹识别显示面板中，所述第一指纹识别电极包括第一电极块和电性连接所述第一电极块的第一电极线，所述第一电极线沿第一方向延伸。
在本申请的指纹识别显示面板中，包括多条所述第一指纹识别电极，多条所述第一指纹识别电极之间相互平行。
在本申请的指纹识别显示面板中，所述第二指纹识别电极包括第二电极块和电性连接所述第二电极块的第二电极线，所述第二电极线沿第二方向延伸。
在本申请的指纹识别显示面板中，包括多条所述第二指纹识别电极，多条所述第二指纹识别电极之间相互平行。
在本申请的指纹识别显示面板中，所述第一电极块与所述第二电极块上下对应设置。
在本申请的指纹识别显示面板中，所述第一电极块的形状是多边形或圆形。
在本申请的指纹识别显示面板中，所述第二电极块的形状是多边形或圆形。
根据本申请一实施例，还包括覆盖所述阴极及所述第一指纹识别电极的薄膜封装层，所述第二指纹识别电极设置于所述薄膜封装层上。
在本申请的指纹识别显示面板中，所述指纹识别显示面板还包括设置于所述薄膜封装层上的触控电极，所述触控电极用于实现所述指纹识别显示面板的触控功能。
在本申请的指纹识别显示面板中，所述触控电极包括触控电极块和电性连接所述触控电极块的触控电极线。
在本申请的指纹识别显示面板中，所述第一电极块的尺寸和所述第二电极块的尺寸均小于所述触控电极块的尺寸。
在本申请的指纹识别显示面板中，所述触控电极包括第一触控电极、第二触控电极和桥连电极，所述第一触控电极在与所述第二触控电极的相交处断开，且位于所述第二触控电极两侧的所述的第一触控电极通过所述桥连电极电性连接。
在本申请的指纹识别显示面板中，所述第一触控电极、所述第二触控电极和所述第二指纹识别电极均位于所述指纹识别显示面板的同一层。
在本申请的指纹识别显示面板中，所述第一触控电极、所述第二触控电极和所述第二指纹识别电极上设置有第一钝化层，所述桥连电极设置于所述第一钝化层上，并通过所述第一钝化层上的过孔与所述第一触控电极电性连接。
在本申请的指纹识别显示面板中，还包括指纹识别引线，所述桥连电极和所述指纹识别引线均设置于所述第二钝化层上。
在本申请的指纹识别显示面板中，所述第一指纹识别电极与所述阴极采用相同导电材料制作，所述第二指纹识别电极采用氧化铟锡、银、氧化铟锡的三层复合结构的材料制作。
在本申请的指纹识别显示面板中，所述显示基板还包括衬底基板、设置于所述衬底基板上的阵列层、以及设置于所述阵列层上的发光层，所述阴极和所述第一指纹识别电极设置于所述发光层上。
本申请还提供一种指纹识别显示装置， 包括指纹识别显示面板；
所述指纹识别显示面板具有显示区，所述指纹识别显示面板包括：
显示基板，包括阴极，所述阴极设置于所述显示区内；
第一指纹识别电极，设置于所述显示区内，与所述阴极同层设置；以及
第二指纹识别电极，设置于所述显示区内，与所述第一指纹识别电极上下对应设置。
在本申请的指纹识别显示装置中，所述第一指纹识别电极包括第一电极块和电性连接所述第一电极块的第一电极线；所述第二指纹识别电极包括第二电极块和电性连接所述第二电极块的第二电极线；
所述指纹识别显示装置还包括触控电极，所述触控电极包括触控电极块和电性连接所述触控电极块的触控电极线；
所述第一电极块的尺寸和所述第二电极块的尺寸均小于所述触控电极块的尺寸。
本申请提供的指纹识别显示面板及指纹识别显示装置包括用于实现指纹识别功能的指纹识别电极和用于实现触控功能的触控电极，通过将指纹识别电极中的第一指纹识别电极与所述显示面板的阴极同层设置，克服了现有技术中阴极与指纹识别电极上下设置而出现的阴极信号干扰指纹识别的缺陷，有利于提升指纹识别的精度和灵敏度，并且本申请中所述指纹识别电极集成于薄膜封装层的两侧，提高了指纹识别电极与显示面板的集成度，相较于现有技术，降低了显示面板的整体厚度和制作成本。
为了更清楚地说明实施例，下面将对实施例中所需要使用的附图作简单介绍。
图1是本申请实施例提供的指纹识别显示面板的截面结构示意图；
图2是本申请实施例提供的指纹识别显示面板的阴极所在层的透视图；
图3是本申请实施例提供的第一指纹识别电极的结构示意图；
图4是本申请实施例提供的第二指纹识别电极的结构示意图；
图5是本申请实施例提供的第一指纹识别电极和所述第二指纹识别电极的叠层结构透视图；
图6是本申请实施例提供的指纹识别显示面板在触控电极层的透视图。
本申请实施例提供一种指纹识别显示面板及指纹识别显示装置，所指纹识别显示面板包括实现指纹识别功能的指纹识别电极和实现触控功能的触控电极，通过将指纹识别电极中的第一指纹识别电极与所述显示面板的阴极同层设置，克服了现有技术中阴极与指纹识别电极上下设置而出现的阴极信号干扰指纹识别的缺陷，并且本申请中所述指纹识别电极集成于薄膜封装层的两侧，提高了指纹识别电极与显示面板的集成度，相较于现有技术，降低了显示面板的整体厚度和制作成本。
请参阅图1，图1是本申请实施例提供的指纹识别显示面板的截面结构示意图。需要说明的是，所述指纹识别显示面板具有显示区和非显示区，所述显示区承担了所述指纹识别显示面板的显示功能，所述非显示区用于设置多种边缘走线和器件，为所述显示区实现其功能提供各种能源和控制信号。
所述指纹识别显示面板包括显示基板LE和设置于所述显示基板LE上的指纹识别电极60和触控电极70，其中，所述指纹识别电极60包括第一指纹识别电极601和第二指纹识别电极602，所述第一指纹识别电极601和所述第二指纹识别电极602上下对应设置，以实现指纹识别功能。需要说明的是，所述显示基板LE是所述指纹识别显示面板中用于发挥显示功能的组件，其同样具有与所述指纹识别显示面板相对应的显示区和非显示区，所述指纹识别电极60设置于所述显示基板LE上，具体地，所述指纹识别电极60设置于所述显示区内，以使得指纹识别功能与显示功能在所述显示区内集成，一方面便于用户准确找到指纹识别区域，提升用户操作的顺畅性和舒适性，另一方面有利于提升所述显示区的占比。
进一步地，所述显示基板LE包括阴极304，所述阴极304对应所述显示基板LE的显示区设置。所述阴极304可以是整面型的金属电极或金属氧化物电极，用于为所述显示基板LE发挥显示功能提供能源和控制信号。
所述第一指纹识别电极601与所述阴极304同层设置，且所述第一指纹识别电极601与所述阴极304无重叠。可选地，所述第一指纹识别电极601与所述阴极304采用相同材料制作，需要说明的是，当所述第一指纹识别电极601与所述阴极304采用同种材料制作时，在制作所述第一指纹识别电极601的过程中，可以与所述阴极304共同采用同一道镀膜工艺以形成原始导电层，然后在指纹识别区，通过特定的图案化工艺，处理所述原始导电层以形成所述第一指纹识别电极601，从而无需为制作所述第一指纹识别电极601而进行单独镀膜操作，简化了所述指纹识别显示面板的整体制作工艺，降低了制作成本。
请参阅图1和图2所示，其中，图2是本申请实施例提供的指纹识别显示面板的阴极所在层的透视图。在一种实施例中，所述第一指纹识别电极601所在的区域被所述阴极304所包围，且位于所述阴极304所围成区域的一侧边缘。需要说明的是，所述第一指纹识别电极601所在的区域即为所述指纹识别显示面板中的指纹识别区，所述第一指纹识别电极601所在的区域并不限于本实施例，本领域技术人员可以根据实际需求和用户操作习惯自由选择所述第一指纹识别电极601的放置位置，且本申请对所述第一指纹识别电极601所占据显示区的大小不作限制，其同样可以根据实际设计需求及用户操作习惯进行自由选择。
本申请实施例将所述第一指纹识别电极601与所述阴极304同层设置，且二者之间在所述指纹识别显示面板的厚度方向上无重叠，克服了现有技术中阴极与指纹识别电极上下设置而出现的阴极信号干扰指纹识别的缺陷；并且第一指纹识别电极601与阴极304同层设置还有利于减小所述指纹识别电极60整体占据的显示面板的厚度，有利于实现所述指纹识别显示面板的轻薄化设计。
所述第二指纹识别电极602与所述第一指纹识别电极601上下对应设置，所述第一指纹识别电极601和所述第二指纹识别电极602共同构成了所述指纹识别电极60的上下两层电极。可选地，所述第一指纹识别电极601构成所述指纹识别电极60的驱动电极，在进行指纹识别操作时，所述第一指纹识别电极601提供主动探测信号，使得所述第一指纹识别电极601与所述第二指纹识别电极602之间形成稳定电容；所述第二指纹识别电极602构成所述指纹识别电极60的感应电极，在进行指纹识别操作时，所述第二指纹识别电极602感应指纹识别区域的压力变化，使得所述第一指纹识别电极601与所述第二指纹识别电极602之间形成的电容的稳定性被打破，并将因电容变化而产生的电信号传递至处理器单元，以进行指纹信息采集，进而实现指纹识别。
具体地，所述第一指纹识别电极601和所述阴极304被薄膜封装层603所覆盖，所述第一指纹识别电极601与所述第二指纹识别电极602分别位于所述薄膜封装层603的相对两侧。所述薄膜封装层603为一层绝缘层，其构成可以是有机层、或无极层、或有机层与无机层的组合，所述薄膜封装层603发挥电性绝缘和对所述显示基板LE的内部各元件进行物理性封闭的作用。
可选地，所述第二指纹识别电极602可以是透明金属电极或透明金属氧化物电极，还可以是金属电极与金属氧化物电极组合而成的透明电极，例如，所述第二指纹识别电极602可以采用氧化铟锡、银、氧化铟锡的三层复合结构的材料制作，使得所述第二指纹识别电极602兼具良好的透光性和优异的导电性。
请参阅图1、图3和图4所示，其中，图3是本申请实施例提供的第一指纹识别电极的结构示意图，图4是本申请实施例提供的第二指纹识别电极的结构示意图。在一种实施例中，所述第一指纹识别电极601包括第一电极块6011和电性连接所述第一电极块6011的第一电极线6012，所述第一电极线6012沿第一方向Y延伸；所述第二指纹识别电极602包括第二电极块6021和电性连接所述第二电极块6021的第二电极线6022，所述第二电极线6022沿第二方向X延伸。通过上述设计，使所述第一指纹识别电极601与所述第二指纹识别电极602的布置方向相交，将指纹识别区划分为网格状，细化指纹识别区域，提升指纹识别的灵敏度和精度。
可选地，所述指纹识别显示面板包括多条所述第一指纹识别电极601和多条所述第二指纹识别电极602，且多条所述第一指纹识别电极601之间相互平行，并布满整个指纹识别区域，多条所述第二指纹识别电极602之间相互平行，并布满整个指纹识别区域。需要说明的是，每条所述第一电极线6012和被其串联起来的所述第一电极块6011构成一条所述第一指纹识别电极601，每条所述第二电极线6022和被其串联起来的所述第二电极块6021构成一条所述第二指纹识别电极602。通过上述设计使得指纹识别电极布满整个指纹识别区，进一步提升指纹识别的灵敏度和精度。
可选地，所述第一电极块6011的形状可以是多边形或圆形，所述第二电极块6021的形状也可以是多边形或圆形，例如所述第一电极块6011的形状和所述第二电极块6021的形状均可以是正三角形、或菱形、或正五边形等。
请参阅图1和图5所示，其中图5是本申请实施例提供的第一指纹识别电极601和所述第二指纹识别电极602的叠层结构透视图。在一种实施例中，所述第一电极块6011与所述第二电极块6021上下对应重叠设置，且所述第一指纹识别电极601沿所述第一方向Y设置，所述第二指纹识别电极602沿所述第二方向X设置，所述第一指纹识别电极601与所述第二指纹识别电极602相交，使得所述指纹识别电极60形成网络状电极矩阵，实现所述指纹识别电极60的指纹定位和识别功能。可选地，所述第一指纹识别电极601与所述第二指纹识别电极602相互垂直，且所述第一电极块6011和所述第二电极块6021在其垂直相交处重叠，从而形成规则的网格状指纹识别电极矩阵，有利于进一步提升指纹识别的灵敏度和精度。
本申请实施例提供的指纹识别显示面板，可以实现屏内指纹识别，通过将第一指纹识别电极与所述显示面板的阴极同层设置，克服了现有技术中阴极与指纹识别电极上下设置而出现的阴极信号干扰指纹识别的缺陷，有利于提升屏内指纹识别的灵敏度和精度，并且将指纹识别电极的两极集成于薄膜封装层的两侧，提高了指纹识别电极与显示面板的集成度，有利于降低显示面板的整体厚度和制作成本。
请继续参阅图1，在一种实施例中，所述指纹识别显示面板还包括设置于所述薄膜封装层603上的触控电极70，所述触控电极70用于实现所述指纹识别显示面板的触控功能。具体地，所述触控电极70包括第一触控电极701和第二触控电极702，所述第一触控电极701与所述第二触控电极702设置于所述指纹识别显示面板的同一层，二者在各自的延伸方向上相交，但彼此绝缘，所述第一触控电极701在其与所述第二触控电极702的相交处断开，且位于所述第二触控电极702两侧的所述的第一触控电极701通过桥连电极703电性连接，从而使所述第一触控电极701形成贯穿所述指纹识别显示面板的整个显示区的完整电极。
进一步地，所述第二指纹识别电极602与所述第一触控电极701和所述第二触控电极702均位于所述指纹识别显示面板的同一层中，且所述第一触控电极701和所述第二触控电极702均可以与所述第二指纹识别电极602采用相同的材料制作而成。需要说明的是，当所述第一触控电极701和所述第二触控电极702与所述第二指纹识别电极602采用同种材料制作时，可以采用同一道镀膜工艺共同形成上述三种电极的原始导电层，然后通过图案化工艺处理所述原始导电层，以分别形成所述第二指纹识别电极602、所述第一触控电极701和所述第二触控电极702，从而简化了所述指纹识别显示面板的整体制作工艺，降低了制作成本；此外，本申请实施例无需为所述第一触控电极701和所述第二触控电极702设置单独的膜层结构，有利于进一步减薄所述指纹识别显示面板的整体厚度，且提升了所述指纹识别显示面板的触控功能和指纹识别功能的集成度，促进所述指纹识别显示面板的轻薄化设计的实现。
进一步地，所述第一触控电极701、所述第二触控电极702和所述第二指纹识别电极602上设置有第一钝化层704，所述第一钝化层704为绝缘层。所述桥连电极703设置于所述第一钝化层704上，并通过所述第一钝化层704上的过孔与所述第一触控电极701电性连接。可选地，所述第一钝化层704上还设置有指纹识别引线604，所述指纹识别引线604与所述第一指纹识别电极601和/或所述第二指纹识别电极602电性连接，用于进行驱动信号和感应信号的传递，以连通所述第一指纹识别电极601和/或所述第二指纹识别电极602与外部处理器单元。可选地，所述指纹识别引线604采用具有钛/铝/钛三层导电金属层的材料制作而成，以保证所述指纹识别引线604具有较低阻抗，进一步提升指纹识别的精度和灵敏度。
请参阅图1、图5和图6所示，其中图6是本申请实施例提供的指纹识别显示面板在触控电极层的透视图。在一种实施例中，所述触控电极70包括触控电极块70a和电性连接所述触控电极块70a的触控电极线70b，所述触控电极块70a和所述触控电极线70b与所述第二指纹识别电极602同层设置。所述第一指纹识别电极601中的所述第一电极块6011的尺寸和所述第二指纹识别电极602中的所述第二电极块6021的尺寸均小于所述触控电极块70a的尺寸，需要说明的是，所述第一电极块6011的尺寸可以指所述第一电极块6011的周长，或所述第一电极块6011的某一特征边的长度，例如，当所述第一电极块6011的形状为圆形时，其尺寸可以指所述圆形的周长或半径，当所述第一电极块6011的形状为菱形时，其尺寸可以指所述菱形的周长或边长；所述第二电极块6021的尺寸、所述触控电极块70a的尺寸和所述第一电极块6011的尺寸均指代同性质的尺寸，例如，可以均指代边长、或圆形半径、或周长。
可选地，所述第一电极块6011的形状、所述第二电极块6021的形状和所述触控电极块70a的形状均为菱形，则所述第一电极块6011和所述第二电极块6021的边长均小于70微米，所述触控电极块70a的边长大于3毫米。
需要说明的是，无论是触控电极还是指纹识别电极，其电极块的尺寸大小与其触控或指纹识别的精度直接相关，具体为：当电极块的尺寸越小，相应的触控或指纹识别的精度也越高，但制作成本也越高；本申请实施例通过将所述第一电极块6011的尺寸和所述第二电极块6021的尺寸均设置小于所述触控电极块70a的尺寸，有利于兼顾指纹识别的高精度与制作成本的最优化。
请继续参阅图1，所述指纹识别显示面板还包括设置于所述桥连电极703和所述指纹识别引线604上的第二钝化层80，所述第二钝化层80具有电性绝缘和物理保护的作用，如防止磨损和水气侵蚀等。
在一种实施例中，所述显示基板LE为有机发光二极管显示基板，包括衬底基板10、设置于所述衬底基板10上的缓冲层40、设置于所述缓冲层40上的阵列层20、设置于所述阵列层20上的平坦层50、以及设置于所述平坦层50上的发光层30。具体地，所述衬底基板10可包括绝缘材料，例如可以是聚酰亚胺、玻璃、石英或陶瓷等；所述缓冲层40设置于所述衬底基板10上，所述缓冲层40可以包括多种有机材料或无机材料；所述阵列层20包括半导体层201、第一栅极绝缘层202、第一栅极203、第二栅极绝缘层204、第二栅极205、层间绝缘层206和源漏电极207，所述半导体层201布置在所述缓冲层40上，所述半导体层201的衬底材料可以为N型或者P型多晶硅半导体，或金属氧化半导体；第一栅极绝缘层202布置在所述半导体层201之上，其材质可以为包括氮化硅或者氧化硅等绝缘材料；第一栅极203布置在所述第一栅极绝缘层202上，所述第一栅极203的材料可以为金属材料Mo，所述半导体层201可以划分为源极、沟道部分和漏极，所述第一栅极203与所述半导体层201的源极、沟道及漏极构成低温多晶硅晶体管或金属氧化物晶体管的栅极、源极、漏极；第二栅极绝缘层204布置在所述第一栅极203上，其材质可以为包括氮化硅或者氧化硅等绝缘材料；第二栅极205布置在所述第二栅极绝缘层204上，材料可以为金属Mo，所述第二栅极205与所述第一栅极203构成存储电容的上下电极；层间绝缘层206覆盖在所述第二栅极205上，其材质可以为包括氮化硅或者氧化硅等绝缘材料；源漏电极207布置在所述层间绝缘层206上，其材料采用金、银、铜、锂、钠、钾、镁、铝、锌及其组合中的一种或多种，所述源漏电极207通过所述层间绝缘层206、所述第二栅极绝缘层204和所述第一栅极绝缘层202上的过孔与所述半导体层201的源极和漏极电性连接；平坦层50布置在所述源漏电极207上，其材质可以为包括氮化硅或者氧化硅等绝缘材料；所述发光层30包括阳极301、像素定义层302、有机功能层303和所述阴极304，阳极301布置在所述平坦层50上，其材质为ITO与Ag的组合，所述阳极301通过所述平坦层50的开孔与所述源漏电极207电性连接，像素定义层302布置在所述阳极301上，所述像素定义层302上设置有多个开孔，有机功能层303通过所述像素定义层302的开孔与所述阳极301接触，所述阴极304设置于所述像素定义层302上，且通过所述像素定义层302上的开孔与所述有机功能层303接触。
本申请实施例还提供一种指纹识别显示装置，所述指纹识别显示装置包括本申请实施例提供的指纹识别显示面板。所述指纹识别显示装置可以是手机、平板电脑、笔记本电脑、电视、导航仪等。
综上所述，本申请实施例提供的指纹识别显示面板及指纹识别显示装置包括实现指纹识别功能的指纹识别电极和实现触控功能的触控电极，通过将指纹识别电极中的第一指纹识别电极与所述显示面板的阴极同层设置，克服了现有技术中阴极与指纹识别电极上下设置而出现的阴极信号干扰指纹识别的缺陷，有利于提升指纹识别的精度和灵敏度，并且本申请中所述指纹识别电极集成于薄膜封装层的两侧，提高了指纹识别电极与显示面板的集成度，相较于现有技术，降低了显示面板的整体厚度和制作成本。
需要说明的是，虽然本申请以具体实施例揭露如上，但上述实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。
Claims (20)
- 一种指纹识别显示面板，具有显示区，其包括：显示基板，包括阴极，所述阴极设置于所述显示区内；第一指纹识别电极，设置于所述显示区内，与所述阴极同层设置；以及第二指纹识别电极，设置于所述显示区内，与所述第一指纹识别电极上下对应设置。
- 根据权利要求1所述的指纹识别显示面板，其中，所述第一指纹识别电极包括第一电极块和电性连接所述第一电极块的第一电极线，所述第一电极线沿第一方向延伸。
- 根据权利要求2所述的指纹识别显示面板，其中，包括多条所述第一指纹识别电极，多条所述第一指纹识别电极之间相互平行。
- 根据权利要求2所述的指纹识别显示面板，其中，所述第二指纹识别电极包括第二电极块和电性连接所述第二电极块的第二电极线，所述第二电极线沿第二方向延伸。
- 根据权利要求4所述的指纹识别显示面板，其中，包括多条所述第二指纹识别电极，多条所述第二指纹识别电极之间相互平行。
- 根据权利要求4所述的指纹识别显示面板，其中，所述第一电极块与所述第二电极块上下对应设置。
- 根据权利要求2所述的指纹识别显示面板，其中，所述第一电极块的形状是多边形或圆形。
- 根据权利要求4所述的指纹识别显示面板，其中，所述第二电极块的形状是多边形或圆形。
- 根据权利要求4所述的指纹识别显示面板，其中，还包括覆盖所述阴极及所述第一指纹识别电极的薄膜封装层，所述第二指纹识别电极设置于所述薄膜封装层上。
- 根据权利要求8所述的指纹识别显示面板，其中，还包括设置于所述薄膜封装层上的触控电极，所述触控电极用于实现所述指纹识别显示面板的触控功能。
- 根据权利要求10所述的指纹识别显示面板，其中，所述触控电极包括触控电极块和电性连接所述触控电极块的触控电极线。
- 根据权利要求11所述的指纹识别显示面板，其中，所述第一电极块的尺寸和所述第二电极块的尺寸均小于所述触控电极块的尺寸。
- 根据权利要求10所述的指纹识别显示面板，其中，所述触控电极包括第一触控电极、第二触控电极和桥连电极，所述第一触控电极在与所述第二触控电极的相交处断开，且位于所述第二触控电极两侧的所述的第一触控电极通过所述桥连电极电性连接。
- 根据权利要求13所述的指纹识别显示面板，其中，所述第一触控电极、所述第二触控电极和所述第二指纹识别电极均位于所述指纹识别显示面板的同一层。
- 根据权利要求14所述的指纹识别显示面板，其中，所述第一触控电极、所述第二触控电极和所述第二指纹识别电极上设置有第一钝化层，所述桥连电极设置于所述第一钝化层上，并通过所述第一钝化层上的过孔与所述第一触控电极电性连接。
- 根据权利要求14所述的指纹识别显示面板，其中，还包括指纹识别引线，所述桥连电极和所述指纹识别引线均设置于所述第二钝化层上。
- 根据权利要求1所述的指纹识别显示面板，其中，所述第一指纹识别电极与所述阴极采用相同导电材料制作，所述第二指纹识别电极采用氧化铟锡、银、氧化铟锡的三层复合结构的材料制作。
- 根据权利要求1所述的指纹识别显示面板，其中，所述显示基板还包括衬底基板、设置于所述衬底基板上的阵列层、以及设置于所述阵列层上的发光层，所述阴极和所述第一指纹识别电极设置于所述发光层上。
- 一种指纹识别显示装置，其包括指纹识别显示面板；所述指纹识别显示面板具有显示区，所述指纹识别显示面板包括：显示基板，包括阴极，所述阴极设置于所述显示区内；第一指纹识别电极，设置于所述显示区内，与所述阴极同层设置；以及第二指纹识别电极，设置于所述显示区内，与所述第一指纹识别电极上下对应设置。
- 根据权利要求19所述的指纹识别显示装置，其中，所述第一指纹识别电极包括第一电极块和电性连接所述第一电极块的第一电极线；所述第二指纹识别电极包括第二电极块和电性连接所述第二电极块的第二电极线；所述指纹识别显示装置还包括触控电极，所述触控电极包括触控电极块和电性连接所述触控电极块的触控电极线；所述第一电极块的尺寸和所述第二电极块的尺寸均小于所述触控电极块的尺寸。
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104699320A (zh) * | 2015-04-01 | 2015-06-10 | 上海天马微电子有限公司 | 一种阵列基板、彩膜基板以及触摸显示装置 |
| CN106024836A (zh) * | 2016-06-03 | 2016-10-12 | 京东方科技集团股份有限公司 | 带指纹识别功能的显示面板及制备方法、显示设备 |
| US9652603B1 (en) * | 2015-12-11 | 2017-05-16 | Keycore Technology Corp. | Fingerprint identification device |
| CN206601913U (zh) * | 2017-03-31 | 2017-10-31 | 上海天马微电子有限公司 | 一种显示面板及显示装置 |
| CN109062430A (zh) * | 2018-07-12 | 2018-12-21 | 昆山国显光电有限公司 | 显示面板及其显示装置 |
| CN110427121A (zh) * | 2019-07-05 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | 具有指纹识别功能的触控显示装置 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104779267A (zh) * | 2015-04-01 | 2015-07-15 | 上海天马微电子有限公司 | 有机发光显示面板以及有机发光显示器 |
| CN105183257B (zh) * | 2015-09-17 | 2017-02-22 | 京东方科技集团股份有限公司 | 触摸屏及其压力触控检测方法 |
| CN108493201B (zh) * | 2018-03-12 | 2020-10-16 | 上海天马有机发光显示技术有限公司 | 一种显示面板、其制造方法及显示装置 |
| US20190354211A1 (en) * | 2018-05-15 | 2019-11-21 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Touch panel and touch display device |
| CN108711406A (zh) * | 2018-05-31 | 2018-10-26 | 厦门天马微电子有限公司 | 一种显示面板以及控制方法 |
| CN208938076U (zh) * | 2018-08-24 | 2019-06-04 | 北京集创北方科技股份有限公司 | 触控显示装置 |
| CN109300941A (zh) * | 2018-09-04 | 2019-02-01 | 武汉华星光电半导体显示技术有限公司 | 一种amoled显示面板 |
| CN109801950B (zh) * | 2019-01-31 | 2021-02-26 | 厦门天马微电子有限公司 | 显示面板、显示装置及显示面板的制作方法 |
| CN110007799B (zh) * | 2019-04-10 | 2023-05-23 | 京东方科技集团股份有限公司 | 一种显示面板及显示面板的触控方法 |
-
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104699320A (zh) * | 2015-04-01 | 2015-06-10 | 上海天马微电子有限公司 | 一种阵列基板、彩膜基板以及触摸显示装置 |
| US9652603B1 (en) * | 2015-12-11 | 2017-05-16 | Keycore Technology Corp. | Fingerprint identification device |
| CN106024836A (zh) * | 2016-06-03 | 2016-10-12 | 京东方科技集团股份有限公司 | 带指纹识别功能的显示面板及制备方法、显示设备 |
| CN206601913U (zh) * | 2017-03-31 | 2017-10-31 | 上海天马微电子有限公司 | 一种显示面板及显示装置 |
| CN109062430A (zh) * | 2018-07-12 | 2018-12-21 | 昆山国显光电有限公司 | 显示面板及其显示装置 |
| CN110427121A (zh) * | 2019-07-05 | 2019-11-08 | 武汉华星光电半导体显示技术有限公司 | 具有指纹识别功能的触控显示装置 |
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| US20220309823A1 (en) | 2022-09-29 |
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