CN106024836B - The display panel and preparation method of fingerprint identification function, display equipment - Google Patents
The display panel and preparation method of fingerprint identification function, display equipment Download PDFInfo
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- H—ELECTRICITY
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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
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- H10K50/00—Organic light-emitting devices
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Abstract
This application provides a kind of display panel of fingerprint identification function and preparation methods, display equipment, to realize the OLED display of fingerprint identification function, process complexity is reduced, save the cost, a kind of display panel of fingerprint identification function provided by the present application includes: array substrate；Anode layer is located in array substrate；Pixel definition area and the multiple organic light-emitting units surrounded by pixel definition area, pixel definition area and organic light-emitting units are located on anode layer；Insulated column is located in pixel definition area；It is multiplexed electrode layer, is located on insulated column and organic light-emitting units, multiplexing electrode layer includes cathode layer and first electrode layer；Wherein, the multiplexing electrode layer of insulated column is covered as first electrode layer, and as cathode layer, first electrode layer is arranged and is not attached to cathode layer same layer the multiplexing electrode layer around first electrode layer；The second electrode lay is located on multiplexing electrode layer；Cover board is located on the second electrode lay.
Description
Technical field
This application involves field of display technology, display panel and preparation side more particularly to a kind of fingerprint identification function
Method, display equipment.
Background technique
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display, also known as Organic Electricity
It excites optical display unit (Organic Electroluminesence Display, OELD).In various types of flat-panel monitors
In, OLED display has the advantages that wide viewing angle, high brightness, high contrast, low driving voltage and quick response.It is existing referring to Fig. 1
Some OLED display panels include: array substrate 101, anode layer 102, organic luminous layer 103 and cathode layer 104 from top to bottom；
Wherein, organic luminous layer include pixel definition area and by the pixel definition area surround multiple organic light-emitting units (in Fig. 1 not
It marks).
Fingerprint is the invariant features that human body is inherent unique and can distinguish with other people, it is by finger tip skin surface
On series of ridges and paddy composition, the composition details of these ridges and paddy generally include the bifurcated of ridge, the end of ridge, arch, tent
The details such as the arch of formula, left-handed, dextrorotation, spiral or bispin, determine the uniqueness of fingerprint pattern.Due to answering extensively for computer
With the development with pattern recognition theory, people, which have begun one's study, carries out the automatic identification of fingerprint using computer, and the world is each at present
State all researches and develops practical fingerprint recognition system trying to be the first.
Wherein, mutual capacitance type fingerprint recognition device is made of driving electrodes Tx and induction electrode Rx, wherein driving electrodes Tx and
Induction electrode Rx is linear, therefore also referred to as Tx line, Rx line.And mutual capacitance type fingerprint identification function is integrated into OLED and is shown
In device, better user interface can be provided for OLED display, had a good application prospect.Therefore, one kind is developed
The OLED display of fingerprint identification function just seems necessary, but mutual capacitance type fingerprint identification function is integrated into OLED and is shown
Many problems can be brought in device, such as: process complexity increases, increased costs.
Summary of the invention
The embodiment of the present application provides the display panel and preparation method, display equipment of a kind of fingerprint identification function, uses
To realize the OLED display of fingerprint identification function, process complexity, save the cost are reduced.
A kind of display panel of fingerprint identification function provided by the embodiments of the present application includes:
Array substrate；
Anode layer is located in the array substrate；
Pixel definition area and the multiple organic light-emitting units surrounded by the pixel definition area, the pixel definition area and institute
Organic light-emitting units are stated to be located on the anode layer；
Insulated column is located in the pixel definition area；
It is multiplexed electrode layer, is located on the insulated column and the organic light-emitting units, the multiplexing electrode layer includes cathode
Layer and first electrode layer；Wherein, the multiplexing electrode layer of the insulated column is covered as first electrode layer, the first electrode layer week
The multiplexing electrode layer enclosed is arranged and is not attached to the cathode layer same layer as cathode layer, the first electrode layer；
The second electrode lay is located on the multiplexing electrode layer；
Cover board is located on the second electrode lay.
The display panel of fingerprint identification function provided by the embodiments of the present application, comprising: array substrate；Anode layer is located at
In the array substrate；Pixel definition area and the multiple organic light-emitting units surrounded by the pixel definition area, the pixel are fixed
Adopted area and the organic light-emitting units are located on the anode layer；Insulated column is located in the pixel definition area；It is multiplexed electrode
Layer is located on the insulated column and the organic light-emitting units, and the multiplexing electrode layer includes cathode layer and first electrode layer；Its
In, the multiplexing electrode layer of the insulated column is covered as first electrode layer, and the multiplexing electrode layer around the first electrode layer is made
For cathode layer, the first electrode layer is arranged and is not attached to the cathode layer same layer；The second electrode lay is located at the multiplexing electricity
On the layer of pole；Cover board is located on the second electrode lay, fingerprint recognition function may be implemented by first electrode layer and the second electrode lay
Can, so as to realize the OLED display of fingerprint identification function, also, by setting first electrode layer and cathode layer same layer
It sets, additionally one layer of first electrode layer of production can be saved, so as to reduce process complexity, save the cost.
Preferably, the display panel further includes thin-film encapsulation layer；Wherein, the thin-film encapsulation layer is located at the multiplexing electrode
Between layer and the second electrode lay.
In the display panel provided by the embodiments of the present application, since thin-film encapsulation layer has functioned simultaneously as first electrode layer and the
Therefore insulating layer between two electrode layers can save a layer insulating, so as to reduce process complexity, save the cost.
Preferably, the display panel further include: insulating layer and thin-film encapsulation layer；Wherein, the insulating layer is located at described multiple
With between electrode layer and the second electrode lay；The thin-film encapsulation layer is between the second electrode lay and the cover board.
Preferably, the insulated column is inverted trapezoidal.
Since insulated column is inverted trapezoidal, the area of first electrode can be made as big as possible in this way, so as to increase hand
Capacitance change caused by referring to, and then improve fingerprint capacity.
Preferably, the first electrode layer includes a plurality of first electrode extended along first axis, the second electrode lay
Including a plurality of along the second axially extending second electrode, wherein the first axis and described second axially vertical.
Preferably, each first electrode includes: a main first electrode, the first electricity of multiple first to be parallel to each other
Pole and multiple second to be parallel to each other first electrodes；Wherein, the main first electrode extends along first axis；Described first
First electrode is located at the main first electrode side and is sandwiched between the main first electrode of adjacent two, and length is less than adjacent
The main first electrode between spacing half；Second first electrode is located at the main first electrode other side and folder
Between two adjacent main first electrodes, length is less than the spacing half between the adjacent main first electrode；
Each second electrode includes: a main second electrode, multiple first to be parallel to each other second electrodes and more
A second to be parallel to each other second electrode；Wherein, the main second electrode is axially extending along second；First second electricity
Pole is located at the main second electrode side and is sandwiched between the main second electrode of adjacent two, and length is less than adjacent described
Spacing half between main second electrode；Second second electrode is located at the main second electrode other side and is sandwiched in adjacent
Two main second electrodes between, length be less than the adjacent main second electrode between spacing half.
Preferably, the spacing between the adjacent first electrode is 10 to 80 μm；
Spacing between the adjacent second electrode is 10 to 80 μm.
Preferably, the cover board includes the layer of polarizer being laminated from top to bottom and hardening coat.
The embodiment of the present application also provides a kind of display equipment of fingerprint identification function, including the embodiment of the present application to provide
Above-mentioned fingerprint identification function display panel.
Due to the display equipment of fingerprint identification function provided by the embodiments of the present application, using above-mentioned function with fingerprint
The display panel of energy, and the display panel of above-mentioned fingerprint identification function includes: array substrate；Anode layer is located at the battle array
On column substrate；Pixel definition area and by the pixel definition area surround multiple organic light-emitting units, the pixel definition area and
The organic light-emitting units are located on the anode layer；Insulated column is located in the pixel definition area；It is multiplexed electrode layer, is located at
On the insulated column and the organic light-emitting units, the multiplexing electrode layer includes cathode layer and first electrode layer；Wherein, it covers
The multiplexing electrode layer of the insulated column is as first electrode layer, and the multiplexing electrode layer around the first electrode layer is as cathode
Layer, the first electrode layer are arranged and are not attached to the cathode layer same layer；The second electrode lay is located at the multiplexing electrode layer
On；Cover board is located on the second electrode lay, fingerprint identification function may be implemented by first electrode layer and the second electrode lay,
So as to realize the OLED display of fingerprint identification function, also, by the way that first electrode layer and cathode layer same layer to be arranged,
Additionally one layer of first electrode layer of production can be saved, so as to reduce process complexity, save the cost.
The embodiment of the present application also provides a kind of preparation method of the display panel of fingerprint identification function, this method packets
It includes:
Anode layer is formed in array substrate；
Pixel definition area is formed on the anode layer；
Insulated column is formed in the pixel definition area；
Multiple organic light-emitting units are formed on the anode layer；Wherein, the pixel definition area surrounds and each described has
Machine luminescence unit；
Multiplexing electrode layer is formed on the insulated column and the organic light-emitting units；Wherein, the multiplexing electrode layer packet
Cathode layer and first electrode layer are included, covers the multiplexing electrode layer of the insulated column as first electrode layer, the first electrode layer
As cathode layer, the first electrode layer is arranged and is not attached to the cathode layer same layer multiplexing electrode layer of surrounding；
The second electrode lay is formed on the multiplexing electrode layer；
Cover board is formed on the second electrode lay.
The display panel of the fingerprint identification function prepared by this method includes: array substrate；Anode layer is located at described
In array substrate；Pixel definition area and the multiple organic light-emitting units surrounded by the pixel definition area, the pixel definition area
It is located on the anode layer with the organic light-emitting units；Insulated column is located in the pixel definition area；It is multiplexed electrode layer, position
In on the insulated column and the organic light-emitting units, the multiplexing electrode layer includes cathode layer and first electrode layer；Wherein, it covers
The multiplexing electrode layer of the insulated column is covered as first electrode layer, the multiplexing electrode layer around the first electrode layer is as cathode
Layer, the first electrode layer are arranged and are not attached to the cathode layer same layer；The second electrode lay is located at the multiplexing electrode layer
On；Cover board is located on the second electrode lay, fingerprint identification function may be implemented by first electrode layer and the second electrode lay,
So as to realize the OLED display of fingerprint identification function, also, by the way that first electrode layer and cathode layer same layer to be arranged,
Additionally one layer of first electrode layer of production can be saved, so as to reduce process complexity, save the cost.
Preferably, this method further include:
Thin-film encapsulation layer is formed between the multiplexing electrode layer and the second electrode lay.
In the display panel prepared by this method, it is multiplexed between electrode layer and the second electrode lay and is provided with thin-film package
Layer, since thin-film encapsulation layer has functioned simultaneously as the insulating layer between first electrode layer and the second electrode lay, one can be saved
Layer insulating, so as to reduce process complexity, save the cost.
Preferably, this method further include:
Insulating layer is formed between the multiplexing electrode layer and the second electrode lay；
Thin-film encapsulation layer is formed between the second electrode lay and the cover board.
Preferably, described form insulated column in the pixel definition area, specifically include: the shape in the pixel definition area
At inverted trapezoidal insulated column.
In the display panel prepared by this method, since insulated column is inverted trapezoidal, first electrode can be made in this way
Area is as big as possible, so as to increase capacitance change caused by finger, and then improves fingerprint capacity.
Preferably, the insulated column that formed includes: to form a plurality of insulated column extended along first axis；
The formation the second electrode lay include: to be formed it is a plurality of along the second axially extending second electrode；
Wherein, the first axis and described second axially vertical.
Preferably, described form cover board on the second electrode lay, specifically include:
Layer of polarizer is formed on the second electrode lay；
Hardening coat is formed in the layer of polarizer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of OLED display panel in the prior art；
Fig. 2 is a kind of structural schematic diagram of the display panel for fingerprint identification function that the embodiment of the present application one provides；
Fig. 3 is the local overlooking schematic diagram in Tu2Zhong pixel definition area and organic light-emitting units；
Fig. 4 is the distribution schematic diagram of first electrode layer and the second electrode lay that the embodiment of the present application one provides；
Fig. 5 is the pattern schematic diagram of the Rx line that the embodiment of the present application one provides and Tx line；
Fig. 6 is the partial enlarged view of Tx line in Fig. 5；
Fig. 7 is driving electrodes Tx and induced electricity in the display panel for the fingerprint identification function that the embodiment of the present application one provides
The local overlooking schematic diagram of pole Rx and pixel definition area stacked structure；
Fig. 8 is a kind of structural schematic diagram of the display panel for fingerprint identification function that the embodiment of the present application two provides；
Fig. 9 is that a kind of process of the preparation method of the display panel of fingerprint identification function provided by the embodiments of the present application is shown
It is intended to.
Specific embodiment
The embodiment of the present application provides the display panel and preparation method, display equipment of a kind of fingerprint identification function, uses
To realize the OLED display of fingerprint identification function, process complexity, save the cost are reduced.
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
It should be noted that the thickness of each layer and shape do not reflect actual proportions in illustrations, purpose is only illustrated
Illustrate teachings herein.
As shown in Fig. 2, a kind of display panel for fingerprint identification function that the embodiment of the present application one provides, comprising: array
Substrate 201, the anode layer 202 in array substrate 201, the pixel definition area 203 on anode layer 202 and determined by pixel
Multiple organic light-emitting units 204 of the adopted encirclement of area 203, are located at insulated column 205 at the insulated column 205 in pixel definition area 203
With the multiplexing electrode layer 206 on organic light-emitting units 204, the thin-film encapsulation layer 207 on multiplexing electrode layer 206, positioned at thin
The second electrode lay 208 on film encapsulated layer 207, the cover board 209 on the second electrode lay 208；Wherein, it is multiplexed electrode layer 206
It include: cathode layer 2061 and first electrode layer 2062, the multiplexing electrode layer 206 of covering insulated column 205 is used as first electrode layer
2062, the multiplexing electrode layer 206 around first electrode layer 2062 is used as cathode layer 2061, first electrode layer 2062 and cathode layer
The setting of 2061 same layers, due to the presence of insulated column 205, so that the multiplexing electrode layer 206 on insulated column 205 is isolated, with
Surrounding multiplexing electrode layer 206 is not attached to, i.e., first electrode layer 2062 is not attached to cathode layer 2061.
The display panel of fingerprint identification function provided by the embodiments of the present application passes through first electrode layer 2062 and the second electricity
Fingerprint identification function may be implemented in pole layer 208, so as to realize the OLED display of fingerprint identification function, also, passes through
First electrode layer 2062 and 2061 same layer of cathode layer are arranged, additionally one layer of first electrode layer 2062 of production can be saved, thus
It can reduce process complexity, save the cost, meanwhile, by the setting of thin-film encapsulation layer 207 in multiplexing electrode layer 206 and second electrode
Between layer 208, since thin-film encapsulation layer 207 has functioned simultaneously as the insulation between first electrode layer 2062 and the second electrode lay 208
Layer, therefore, can save a layer insulating, so as to be further reduced process complexity, save the cost.
Wherein, array substrate 201 can be formed by making transparent glass as main component comprising silica (silica),
It can be formed by transparent plastic material, such as can be polyether sulfone (PES), polyacrylate (PAR), polyetherimide (PEI), gather
(ethylene naphthalate) (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl
(polyallylate), polyimides, polycarbonate (PC), Triafol T (TAC), cellulose acetate propionate (CAP) or
The insulation organic transparent material that one of acrylate (acryl) or their combination are constituted.
Be multiplexed electrode layer material can be transparent conductive material, such as: tin indium oxide (ITO), indium zinc oxide (IZO),
Zinc oxide (ZnO) and indium oxide (In2O3One or more of).The material of anode layer can be metal material silver (Ag), magnesium
(Mg), aluminium (Al), platinum (Pt), palladium (Pd), golden (Au), nickel (Ni), neodymium (Nd), iridium (Ir) and chromium (Cr) neutralize a kind of or more
Kind.
Preferably, insulated column 205 can be inverted trapezoidal, since inverted trapezoidal can make the area of first electrode 2062 to the greatest extent may be used
Can be big, in this way, the mutual capacitance between first electrode layer 2062 and the second electrode lay 208 can be made to increase, and mutual capacitance increase can be with
Capacitance change caused by finger is improved, to improve fingerprint capacity.
The laminated film that thin-film encapsulation layer 207 can be stacked with for inorganic material with organic material, for preventing the external world
Water oxygen enter inside OLED.
Preferably, the display panel of above-mentioned fingerprint identification function can also include: positioned at array substrate 201 and anode
Back plane circuitry layer 210 between layer 202, back plane circuitry layer 210 may include thin film transistor (TFT), data line and grid line.Certainly,
It can be not provided with back plane circuitry layer 210, driven using external circuit.
Cover board 209 can be inorganic transparent substrate, such as glass substrate, be also possible to organic transparent substrate, such as PET base
Plate or polyether sulfone (PES), polyetherimide (PEI), polyethylene naphthalate (PEN), gather polyacrylate (PAR)
The transparent substrate of the formation such as ethylene terephthalate (PET), preferably, as shown in Fig. 2, cover board 209 may include from it is lower to
The thin layer of polarizer 2091 and hardening coat 2092 of upper stacking；Wherein, layer of polarizer 2091 can be used to improve back plane circuitry
Layer 210 in metal reflective the problem of, hardening coat 2092 can increase the scratch resistance on polaroid surface in layer of polarizer 2091
Ability.
It should be noted that the multiple organic light-emitting units 204 surrounded by pixel definition area 203 are at array point referring to Fig. 3
Cloth, Fig. 3 only show three therein as representing, specially organic light-emitting units 204R, organic light-emitting units 204G and have
Machine luminescence unit 204B, they correspond to three organic light-emitting units of display three kinds of colors of red, green and blue.It is, of course, also possible to
Organic light-emitting units are not limited with the organic light-emitting units of other colors, such as white or yellow, the embodiment of the present application
Color.Organic light-emitting units 204 may include the hole transmission layer, organic layer and electron transfer layer being laminated from top to bottom.Pixel
Definition 203 limits each 204 region of organic light-emitting units, has insulation and nontransparent property.
Referring to fig. 4, first electrode layer 2062 includes a plurality of first electrode extended along first axis, the second electrode lay 208
Including a plurality of along the second axially extending second electrode, wherein first axis is axially vertical with second.Wherein, first electrode can
Think driving electrodes or induction electrode, second electrode can be induction electrode or driving electrodes, it can be first electrode to drive
Moving electrode, second electrode are induction electrode, and being also possible to first electrode is induction electrode, and second electrode is driving electrodes.
First electrode covers insulated column 205, is located in pixel definition area 203, second electrode also is located at pixel definition area 203
On, i.e., second electrode is not located on organic light-emitting units 204, at this point, the material of second electrode 2081 can be magnesium (Mg), silver
(Ag), the metal materials such as calcium (Ca), lithium (Li), aluminium (Al) are also possible to tin indium oxide (ITO), indium zinc oxide (IZO), oxidation
Zinc (ZnO) and indium oxide (In2O3) etc. metal oxide materials.It is fixed that pixel is all located at by setting first electrode and second electrode
In adopted area 203, that is, it is located at the non-light-emitting area of display panel, will not influence the aperture opening ratio of display in this way.
Or first electrode covers insulated column 205, is located in pixel definition area 203, second electrode is located at pixel definition area
203 and organic light-emitting units 204 on, at this point, the material of second electrode can be transparent conductive material, can be tin indium oxide
(ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and indium oxide (In2O3) etc. metal oxide materials, certainly, second electrode
All transparent conductive materials can not be needed, it is only necessary to adopt the part for guaranteeing that second electrode is located on organic light-emitting units 204
With transparent conductive material.It is located in pixel definition area 203 and organic light-emitting units 204 by the way that second electrode is arranged, in this way
The area of the second electrode lay 208 can be increased, so that the mutual capacitance between first electrode layer 2062 and the second electrode lay 208 increases
Add, and capacitance change caused by finger can be improved in mutual capacitance increase, to improve fingerprint capacity.
In specific implementation, since the spacing between fingerprint valley and ridge is generally 300-400 μm or so, in order to realize to finger
The reconstruction of line, spacing between the two adjacent driving electrodes Tx or induction electrode Rx paddy adjacent no more than in fingerprint and ridge it
Between spacing.Preferably, as shown in figure 4, the spacing T1 between adjacent first electrode can be 30 to 80 μm；Adjacent second
Spacing T2 between electrode can be 30 to 80 μm.
It, can be by increasing by the first electricity in order to increase the mutual capacitance between first electrode layer 2062 and the second electrode lay 208
The area of pole and/or second electrode, there are many kinds of the modes of specific implementation, for example, driving electrodes as shown in Figure 5 can be used
The pattern of Tx and induction electrode Rx, Tx line extend along first axis, and Rx line is axially extending along second, the first axis and second
It is axially mutually perpendicular to, Tx line described in each includes three parts, respectively Tx main line, the first Tx branch line and the 2nd Tx branch line；
Wherein, the Tx main line is the Tx line extended along first axis；The first Tx branch line is located at Tx main line side and is sandwiched in
Between two adjacent Rx lines, length is less than the spacing half between adjacent Tx line；The 2nd Tx branch line is located at the Tx
It the main line other side and is sandwiched between two adjacent Rx lines, length is less than the spacing half between adjacent Tx line；Specifically, such as
The partial enlarged view of Tx line is as shown in fig. 6, Tx line described in each includes Tx main line 01, the first Tx branch line 02 and the in Fig. 5
Two Tx branch lines 03；Rx line described in each also includes three parts, respectively Rx main line, the first Rx branch line and the 2nd Rx branch line；
Wherein, the Rx main line is the Rx line extended along first axis；The first Rx branch line is located at Rx main line side and is sandwiched in
Between two adjacent Rx lines, length is less than the spacing half between adjacent Rx line；The 2nd Rx branch line is located at the Rx
It the main line other side and is sandwiched between two adjacent Rx lines, length is less than the spacing half between adjacent Rx line.With the first electricity
For pole and second electrode are all only positioned in pixel definition area, the distribution patterns of driving electrodes Tx and induction electrode Rx can be as
Shown in Fig. 7.
Referring to Fig. 8, a kind of display panel for fingerprint identification function that the embodiment of the present application two provides is implemented with the application
A kind of difference of the display panel for fingerprint identification function that example one provides is: thin-film encapsulation layer 207 is located at the second electrode lay
Between 208 and cover board 209, it is additionally provided with insulating layer 211 between multiplexing electrode layer 206 and the second electrode lay 208, the insulating layer
211 to insulate between first electrode layer 2062 and the second electrode lay 208.
Based on the same inventive concept, the embodiment of the present application also provides a kind of systems of the display panel of fingerprint identification function
Preparation Method, referring to Fig. 9, this method comprises:
S11, anode layer is formed in array substrate；
S12, pixel definition area is formed on the anode layer；
S13, insulated column is formed in the pixel definition area；
S14, multiple organic light-emitting units are formed on the anode layer；Wherein, the pixel definition area surrounds each institute
State organic light-emitting units；
S15, multiplexing electrode layer is formed on the insulated column and the organic light-emitting units；Wherein, the multiplexing electrode
Layer includes cathode layer and first electrode layer, covers the multiplexing electrode layer of the insulated column as first electrode layer, first electricity
As cathode layer, the first electrode layer is arranged and is not attached to the cathode layer same layer multiplexing electrode layer around the layer of pole；
S16, the second electrode lay is formed on the multiplexing electrode layer；
S17, cover board is formed on the second electrode lay.
Preferably, this method further include:
Thin-film encapsulation layer is formed between the multiplexing electrode layer and the second electrode lay.
Preferably, this method further include:
Insulating layer is formed between the multiplexing electrode layer and the second electrode lay；
Thin-film encapsulation layer is formed between the second electrode lay and the cover board.
Preferably, described form insulated column in the pixel definition area, specifically include: the shape in the pixel definition area
At inverted trapezoidal insulated column.
Preferably, the insulated column that formed includes: to form a plurality of insulated column extended along first axis；
The formation the second electrode lay include: to be formed it is a plurality of along the second axially extending second electrode；
Wherein, the first axis and described second axially vertical.
Preferably, described form cover board on the second electrode lay, specifically include:
Layer of polarizer is formed on the second electrode lay；
Hardening coat is formed in the layer of polarizer.
Below to be provided with back plane circuitry layer between array substrate and anode layer, thin-film encapsulation layer setting is in multiplexing electrode layer
For between the second electrode lay, the step of preparation method to illustrate the display panel of fingerprint identification function.
Step 1: in array substrate (such as photoetching process can be used) formed include thin film transistor (TFT), data line and
The back plane circuitry layer of grid line；
Step 2: forming anode layer on back plane circuitry layer；
Step 3: forming pixel definition area on the anode layer；
Step 4: the place that first electrode layer is needed to form in pixel definition area formed it is a plurality of along first axis extend
Inverted trapezoidal insulated column；
Step 5: multiple organic light-emitting units (packet of array distribution is deposited on the anode layer using vacuum evaporation process
Include red organic light-emitting units, green organic light-emitting units and blue organic light-emitting units)；Wherein, pixel definition area surrounds every
One organic light-emitting units；
Step 6: using vacuum evaporation process, the vapor deposition multiplexing electrode layer on insulated column and organic light-emitting units；Wherein,
Multiplexing electrode layer includes cathode layer and first electrode layer, covers the multiplexing electrode layer of the insulated column as first electrode layer, the
As cathode layer, first electrode layer is arranged and is not attached to cathode layer same layer multiplexing electrode layer around one electrode layer；
Step 7: making thin-film package by the way of being stacked on multiplexing electrode layer using inorganic material and organic material
Layer；
Step 8: formed in thin-film encapsulation layer it is a plurality of along the second axially extending second electrode as the second electrode lay；
Wherein, first axis and second axially vertical；
Step 9: forming layer of polarizer on the second electrode layer；
Step 10: forming hardening coat in layer of polarizer.
Based on the same inventive concept, the embodiment of the present application also provides a kind of display equipment of fingerprint identification function, packets
The display panel of above-mentioned fingerprint identification function provided by the embodiments of the present application is included, which can be with are as follows: mobile phone, plate electricity
Any products or components having a display function such as brain, television set, display, laptop, Digital Frame, navigator.
In conclusion the display panel of fingerprint identification function provided by the embodiments of the present application, comprising: array substrate；Sun
Pole layer, is located in the array substrate；Pixel definition area and the multiple organic light-emitting units surrounded by the pixel definition area, institute
It states pixel definition area and the organic light-emitting units is located on the anode layer；Insulated column is located in the pixel definition area；It is multiple
With electrode layer, it is located on the insulated column and the organic light-emitting units, the multiplexing electrode layer includes cathode layer and the first electricity
Pole layer；Wherein, the multiplexing electricity for covering the multiplexing electrode layer of the insulated column as first electrode layer, around the first electrode layer
Pole layer is used as cathode layer, and the first electrode layer is arranged and is not attached to the cathode layer same layer；The second electrode lay is located at described
It is multiplexed on electrode layer；Cover board is located on the second electrode lay, fingerprint may be implemented by first electrode layer and the second electrode lay
Identification function, so as to realize the OLED display of fingerprint identification function, also, by by first electrode layer and cathode layer
Same layer setting can save additionally one layer of first electrode layer of production, so as to reduce process complexity, save the cost.
Obviously, those skilled in the art can carry out various modification and variations without departing from the essence of the application to the application
Mind and range.In this way, if these modifications and variations of the application belong to the range of the claim of this application and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (15)
1. a kind of display panel of fingerprint identification function characterized by comprising
Array substrate；
Anode layer is located in the array substrate；
Pixel definition area and the multiple organic light-emitting units surrounded by the pixel definition area, the pixel definition area and described have
Machine luminescence unit is located on the anode layer；
Insulated column is located in the pixel definition area；
Be multiplexed electrode layer, be located on the insulated column and the organic light-emitting units, the multiplexing electrode layer include cathode layer with
First electrode layer；Wherein, the multiplexing electrode layer of the insulated column is covered as first electrode layer, around the first electrode layer
Electrode layer is multiplexed as cathode layer, the first electrode layer is arranged and is not attached to the cathode layer same layer；
The second electrode lay is located on the multiplexing electrode layer；
Cover board is located on the second electrode lay.
2. display panel according to claim 1, which is characterized in that the display panel further includes thin-film encapsulation layer；Wherein,
The thin-film encapsulation layer is between the multiplexing electrode layer and the second electrode lay.
3. display panel according to claim 1, which is characterized in that the display panel further include: insulating layer and film envelope
Fill layer；Wherein, the insulating layer is between the multiplexing electrode layer and the second electrode lay；The thin-film encapsulation layer is located at
Between the second electrode lay and the cover board.
4. display panel described in any claim according to claim 1~3, which is characterized in that the insulated column is inverted trapezoidal.
5. display panel described in any claim according to claim 1~3, which is characterized in that the first electrode layer includes more
The first electrode that item extends along first axis, the second electrode lay include a plurality of along the second axially extending second electrode,
In, the first axis and described second axially vertical.
6. display panel according to claim 5, which is characterized in that each first electrode includes: a master first
Electrode, multiple first to be parallel to each other first electrodes and multiple second to be parallel to each other first electrodes；Wherein, the master
One electrode extends along first axis；First first electrode is located at the main first electrode side and is sandwiched in adjacent two
Between the main first electrode, length is less than the spacing half between the adjacent main first electrode；Described second first
Electrode is located at the main first electrode other side and is sandwiched between the main first electrode of adjacent two, and length is less than adjacent
Spacing half between the main first electrode；
Each second electrode includes: a main second electrode, multiple first to be parallel to each other second electrodes and multiple phases
Mutually second parallel second electrode；Wherein, the main second electrode is axially extending along second；First second electrode position
It in the main second electrode side and is sandwiched between the main second electrode of adjacent two, length is less than the adjacent master the
Spacing half between two electrodes；Second second electrode is located at the main second electrode other side and is sandwiched in adjacent two
Between main second electrode described in item, length is less than the spacing half between the adjacent main second electrode.
7. display panel according to claim 5, which is characterized in that the spacing between the adjacent first electrode is 10
To 80 μm；
Spacing between the adjacent second electrode is 10 to 80 μm.
8. display panel described in any claim according to claim 1~3, which is characterized in that the cover board includes from top to bottom
The layer of polarizer and hardening coat of stacking.
9. a kind of display equipment of fingerprint identification function, which is characterized in that including described in any claim of claim 1~8
The display panel of fingerprint identification function.
10. a kind of preparation method of the display panel of fingerprint identification function, which is characterized in that this method comprises:
Anode layer is formed in array substrate；
Pixel definition area is formed on the anode layer；
Insulated column is formed in the pixel definition area；
Multiple organic light-emitting units are formed on the anode layer；Wherein, the pixel definition area surrounds each organic hair
Light unit；
Multiplexing electrode layer is formed on the insulated column and the organic light-emitting units；Wherein, the multiplexing electrode layer includes yin
Pole layer and first electrode layer cover the multiplexing electrode layer of the insulated column as first electrode layer, around the first electrode layer
Multiplexing electrode layer as cathode layer, the first electrode layer is arranged and is not attached to the cathode layer same layer；
The second electrode lay is formed on the multiplexing electrode layer；
Cover board is formed on the second electrode lay.
11. according to the method described in claim 10, it is characterized in that, this method further include:
Thin-film encapsulation layer is formed between the multiplexing electrode layer and the second electrode lay.
12. according to the method described in claim 10, it is characterized in that, this method further include:
Insulating layer is formed between the multiplexing electrode layer and the second electrode lay；
Thin-film encapsulation layer is formed between the second electrode lay and the cover board.
13. method described in 0~12 any claim according to claim 1, which is characterized in that described in the pixel definition area
Insulated column is formed, is specifically included: forming inverted trapezoidal insulated column in the pixel definition area.
14. method described in 0~12 any claim according to claim 1, which is characterized in that the formation insulated column includes: shape
At a plurality of insulated column extended along first axis；
The formation the second electrode lay include: to be formed it is a plurality of along the second axially extending second electrode；
Wherein, the first axis and described second axially vertical.
15. method described in 0~12 any claim according to claim 1, which is characterized in that described on the second electrode lay
Cover board is formed, is specifically included:
Layer of polarizer is formed on the second electrode lay；
Hardening coat is formed in the layer of polarizer.
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| CN201610391397.0A CN106024836B (en) | 2016-06-03 | 2016-06-03 | The display panel and preparation method of fingerprint identification function, display equipment |
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| CN201610391397.0A CN106024836B (en) | 2016-06-03 | 2016-06-03 | The display panel and preparation method of fingerprint identification function, display equipment |
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| CN108573191B (en) * | 2017-03-07 | 2021-12-17 | 固安翌光科技有限公司 | OLED screen body used as light source of fingerprint identification device and optical fingerprint identification device |
| CN108630729A (en) * | 2017-03-24 | 2018-10-09 | 上海和辉光电有限公司 | A kind of structure and method improving OLED pixel defect |
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