CN106024836A - Display panel with fingerprint identification function, preparation method and display device - Google Patents

Display panel with fingerprint identification function, preparation method and display device Download PDF

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Publication number
CN106024836A
CN106024836A CN201610391397.0A CN201610391397A CN106024836A CN 106024836 A CN106024836 A CN 106024836A CN 201610391397 A CN201610391397 A CN 201610391397A CN 106024836 A CN106024836 A CN 106024836A
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China
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electrode
layer
electrode layer
multiplexing
master
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CN201610391397.0A
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Chinese (zh)
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CN106024836B (en
Inventor
王海生
董学
薛海林
陈小川
丁小梁
刘英明
许睿
杨盛际
李昌峰
刘伟
王鹏鹏
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京东方科技集团股份有限公司
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Publication of CN106024836A publication Critical patent/CN106024836A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/28Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part
    • H01L27/32Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including components using organic materials as the active part, or using a combination of organic materials with other materials as the active part with components specially adapted for light emission, e.g. flat-panel displays using organic light-emitting diodes [OLED]
    • H01L27/3241Matrix-type displays
    • H01L27/3244Active matrix displays
    • H01L27/3246Pixel defining structures, e.g. banks
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
    • H01L51/52Details of devices
    • H01L51/5203Electrodes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
    • H01L51/52Details of devices
    • H01L51/5203Electrodes
    • H01L51/5221Cathodes, i.e. with low work-function material
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L51/00Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof
    • H01L51/50Solid state devices using organic materials as the active part, or using a combination of organic materials with other materials as the active part; Processes or apparatus specially adapted for the manufacture or treatment of such devices, or of parts thereof specially adapted for light emission, e.g. organic light emitting diodes [OLED] or polymer light emitting devices [PLED]
    • H01L51/56Processes or apparatus specially adapted for the manufacture or treatment of such devices or of parts thereof

Abstract

The invention provides a display panel with a fingerprint identification function, a preparation method and a display device for achieving an OLED display with the fingerprint identification function, reducing the process complexity and saving the cost. The display panel with the fingerprint identification function provided by the invention comprises an array substrate, an anode layer, a pixel definition region, a plurality of organic light-emitting units, an isolating column, a reuse electrode layer, a second electrode layer and a cover plate, wherein the anode layer is located on the array substrate; the plurality of organic light-emitting units are surrounded by the pixel definition region; the pixel definition region and the organic light-emitting units are located on the anode layer; the isolating column is located on the pixel definition region; the reuse electrode layer is located on the isolating column and the organic light-emitting units; the reuse electrode layer comprises a cathode layer and a first electrode layer; the reuse electrode layer covering the isolating column is taken as a first electrode layer; the reuse electrode layer surrounded by the first electrode layer is taken as the cathode layer; the first electrode layer and the cathode layer are arranged on the same layer and are not connected with each other; the second electrode layer is located on the reuse electrode layer; and the cover plate is located on the second electrode layer.

Description

The display floater of function with fingerprint and preparation method, display device

Technical field

The application relates to Display Technique field, particularly relate to a kind of function with fingerprint display floater and Preparation method, display device.

Background technology

Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display, has been also called Electroluminescent display (Organic Electroluminesence Display, OELD).Various types of In flat faced display, OLED display have wide viewing angle, high brightness, high-contrast, low driving voltage and The quickly advantage of response.Seeing Fig. 1, existing OLED display panel includes from top to bottom: array base palte 101, anode layer 102, organic luminous layer 103 and cathode layer 104;Wherein, organic luminous layer includes pixel Definition and the multiple organic light-emitting units (not marking in Fig. 1) surrounded by this pixel definition district.

Fingerprint is the invariant features that human body is inherent unique and can distinguish with other people, and it is by finger tip skin Series of ridges on skin surface and paddy composition, the composition details of these ridges and paddy generally includes the bifurcated of ridge, ridge The details such as end, arch, the arch of tent-type, left-handed, dextrorotation, spiral or bispin, determine fingerprint The uniqueness of pattern.Due to extensively application and the development of pattern recognition theory of computer, people have started to grind Studying carefully the automatic identification using computer to carry out fingerprint, current countries in the world all refer in research and development practicality of trying to be the first Stricture of vagina identification system.

Wherein, mutual capacitance type fingerprint recognition device is made up of drive electrode Tx and induction electrode Rx, wherein, drives Moving electrode Tx and induction electrode Rx is wire, the most also referred to as Tx line, Rx line.And by mutual capacitance type Fingerprint identification function is integrated in OLED display, can be that OLED display provides more preferable user Interactive interface, has good application prospect.Therefore, the OLED developing a kind of function with fingerprint shows Show that device just seems necessary, but mutual capacitance type fingerprint identification function is integrated in OLED display and can carry Carrying out many problems, such as: process complexity increases, cost increases.

Summary of the invention

The embodiment of the present application provides the display floater of a kind of function with fingerprint and preparation method, display sets Standby, in order to realize the OLED display of function with fingerprint, reduce process complexity, cost-effective.

The display floater of the function a kind of with fingerprint that the embodiment of the present application provides includes:

Array base palte;

Anode layer, is positioned on described array base palte;

Pixel definition district and the multiple organic light-emitting units surrounded by described pixel definition district, described pixel definition District and described organic light-emitting units are positioned on described anode layer;

Insulated column, is positioned in described pixel definition district;

Multiplexing electrode layer, is positioned on described insulated column and described organic light-emitting units, described multiplexing electrode layer bag Include cathode layer and the first electrode layer;Wherein, cover the multiplexing electrode layer of described insulated column as the first electrode layer, Multiplexing electrode layer around described first electrode layer as cathode layer, described first electrode layer and described cathode layer Arrange with layer and be not attached to;

The second electrode lay, is positioned on described multiplexing electrode layer;

Cover plate, is positioned on described the second electrode lay.

The display floater of the function with fingerprint that the embodiment of the present application provides, including: array base palte;Anode Layer, is positioned on described array base palte;Pixel definition district and by described pixel definition district surround multiple organic Light unit, described pixel definition district and described organic light-emitting units are positioned on described anode layer;Insulated column, position In described pixel definition district;Multiplexing electrode layer, is positioned on described insulated column and described organic light-emitting units, Described multiplexing electrode layer includes cathode layer and the first electrode layer;Wherein, the multiplexing electrode of described insulated column is covered Layer as the first electrode layer, the multiplexing electrode layer around described first electrode layer as cathode layer, described first Electrode layer and described cathode layer arrange with layer and are not attached to;The second electrode lay, is positioned on described multiplexing electrode layer; Cover plate, is positioned on described the second electrode lay, can realize fingerprint by the first electrode layer and the second electrode lay and know Other function, such that it is able to realize the OLED display of function with fingerprint, and, by by the first electricity Pole layer is arranged with layer with cathode layer, can save one layer of first electrode layer of extra making, such that it is able to reduce work Skill complexity, cost-effective.

It is preferred that this display floater also includes thin-film encapsulation layer;Wherein, described thin-film encapsulation layer is positioned at described Between multiplexing electrode layer and described the second electrode lay.

In this display floater that the embodiment of the present application provides, owing to thin-film encapsulation layer has functioned simultaneously as the first electrode Insulating barrier between layer and the second electrode lay, therefore, it can save a layer insulating, such that it is able to reduce work Skill complexity, cost-effective.

It is preferred that this display floater also includes: insulating barrier and thin-film encapsulation layer;Wherein, described insulating barrier position Between described multiplexing electrode layer and described the second electrode lay;Described thin-film encapsulation layer is positioned at described second electrode Between layer and described cover plate.

It is preferred that described insulated column is inverted trapezoidal.

Owing to insulated column is inverted trapezoidal, so so that the area of the first electrode is big as far as possible, such that it is able to Increase the capacitance change that finger causes, and then improve fingerprint capacity.

It is preferred that described first electrode layer includes a plurality of along the first axially extended first electrode, described second Electrode layer includes a plurality of along the second axially extended second electrode, and wherein, described first axially with described second Axially vertical.

It is preferred that each described first electrode includes: master's first electrode, multiple be parallel to each other first Prop up the first electrode and multiple second the first electrode being parallel to each other;Wherein, described master's the first electrode is along first Axially extending;Described first the first electrode is positioned at described master the first electrode side and is sandwiched in adjacent two institute Stating between main first electrode, length is less than the spacing half between adjacent described master the first electrode;Described Two the first electrodes are positioned at described master's the first electrode opposite side and are sandwiched in adjacent two described master the first electrode Between, length is less than the spacing half between adjacent described master the first electrode;

Each described second electrode includes: master's the second electrode, multiple first second electricity being parallel to each other Pole and multiple second the second electrode being parallel to each other;Wherein, described master's the second electrode is axially extending along second; Described first the second electrode is positioned at described master the second electrode side and is sandwiched in the described master of adjacent two second Between electrode, length is less than the spacing half between adjacent described master the second electrode;Described second second Electrode is at described master's the second electrode opposite side and is sandwiched between adjacent two described master the second electrode, length Less than the spacing half between adjacent described master the second electrode.

It is preferred that the spacing between adjacent described first electrode is 10 to 80 μm;

The adjacent spacing between described second electrode is 10 to 80 μm.

It is preferred that described cover plate includes layer of polarizer and the hardening coat of stacking from top to bottom.

The embodiment of the present application additionally provides the display device of a kind of function with fingerprint, implements including the application The display floater of the function above-mentioned with fingerprint that example provides.

Due to the display device of the function with fingerprint that the embodiment of the present application provides, use above-mentioned band fingerprint Identify the display floater of function, and the display floater of above-mentioned function with fingerprint includes: array base palte; Anode layer, is positioned on described array base palte;Pixel definition district and multiple the having by the encirclement of described pixel definition district Machine luminescence unit, described pixel definition district and described organic light-emitting units are positioned on described anode layer;Insulated column, It is positioned in described pixel definition district;Multiplexing electrode layer, is positioned on described insulated column and described organic light-emitting units, Described multiplexing electrode layer includes cathode layer and the first electrode layer;Wherein, the multiplexing electrode of described insulated column is covered Layer as the first electrode layer, the multiplexing electrode layer around described first electrode layer as cathode layer, described first Electrode layer and described cathode layer arrange with layer and are not attached to;The second electrode lay, is positioned on described multiplexing electrode layer; Cover plate, is positioned on described the second electrode lay, can realize fingerprint by the first electrode layer and the second electrode lay and know Other function, such that it is able to realize the OLED display of function with fingerprint, and, by by the first electricity Pole layer is arranged with layer with cathode layer, can save one layer of first electrode layer of extra making, such that it is able to reduce work Skill complexity, cost-effective.

The embodiment of the present application additionally provides the preparation method of the display floater of a kind of function with fingerprint, the party Method includes:

Array base palte is formed anode layer;

Described anode layer is formed pixel definition district;

Described pixel definition district is formed insulated column;

Described anode layer is formed multiple organic light-emitting units;Wherein, described pixel definition district surrounds each Described organic light-emitting units;

Described insulated column and described organic light-emitting units are formed multiplexing electrode layer;Wherein, described multiplexing electricity Pole layer includes cathode layer and the first electrode layer, covers the multiplexing electrode layer of described insulated column as the first electrode Layer, the multiplexing electrode layer around described first electrode layer as cathode layer, described first electrode layer and described the moon Pole layer arranges with layer and is not attached to;

Described multiplexing electrode layer is formed the second electrode lay;

Described the second electrode lay is formed cover plate.

The display floater of the function with fingerprint prepared by the method is included: array base palte;Anode layer, It is positioned on described array base palte;Pixel definition district and the multiple organic light emission lists surrounded by described pixel definition district Unit, described pixel definition district and described organic light-emitting units are positioned on described anode layer;Insulated column, is positioned at institute State in pixel definition district;Multiplexing electrode layer, is positioned on described insulated column and described organic light-emitting units, described Multiplexing electrode layer includes cathode layer and the first electrode layer;Wherein, the multiplexing electrode layer covering described insulated column is made Be the first electrode layer, the multiplexing electrode layer around described first electrode layer as cathode layer, described first electrode Layer and described cathode layer arrange with layer and are not attached to;The second electrode lay, is positioned on described multiplexing electrode layer;Lid Plate, is positioned on described the second electrode lay, can realize fingerprint recognition by the first electrode layer and the second electrode lay Function, such that it is able to realize the OLED display of function with fingerprint, and, by by the first electrode Layer is arranged with layer with cathode layer, can save one layer of first electrode layer of extra making, such that it is able to reduce technique Complexity, cost-effective.

It is preferred that the method also includes:

Thin-film encapsulation layer is formed between described multiplexing electrode layer and described the second electrode lay.

By, in display floater prepared by the method, being provided with thin film between multiplexing electrode layer and the second electrode lay Encapsulated layer, owing to thin-film encapsulation layer has functioned simultaneously as the insulating barrier between the first electrode layer and the second electrode lay, Therefore, it can save a layer insulating, such that it is able to reduce process complexity, cost-effective.

It is preferred that the method also includes:

Insulating barrier is formed between described multiplexing electrode layer and described the second electrode lay;

Thin-film encapsulation layer is formed between described the second electrode lay and described cover plate.

In described pixel definition district, form insulated column it is preferred that described, specifically include: fixed in described pixel Justice forms inverted trapezoidal insulated column in district.

By in display floater prepared by the method, owing to insulated column is inverted trapezoidal, so so that first The area of electrode is big as far as possible, such that it is able to increase the capacitance change that finger causes, and then improves fingerprint knowledge Other ability.

It is preferred that described formation insulated column includes: formed a plurality of along the first axially extended insulated column;

Described formation the second electrode lay includes: formed a plurality of along the second axially extended second electrode;

Wherein, described first axially and described second axially vertical.

On described the second electrode lay, form cover plate it is preferred that described, specifically include:

Described the second electrode lay is formed layer of polarizer;

Described layer of polarizer is formed hardening coat.

Accompanying drawing explanation

Fig. 1 is the structural representation of OLED display panel in prior art;

The structure of the display floater of the function a kind of with fingerprint that Fig. 2 provides for the embodiment of the present application one is shown It is intended to;

Fig. 3 is the local schematic top plan view of Tu2Zhong pixel definition district and organic light-emitting units;

The first electrode layer that Fig. 4 provides for the embodiment of the present application one and the distribution schematic diagram of the second electrode lay;

The Rx line that Fig. 5 provides for the embodiment of the present application one and the pattern schematic diagram of Tx line;

Fig. 6 is the partial enlarged drawing of Tx line in Fig. 5;

Drive electrode Tx in the display floater of the function with fingerprint that Fig. 7 provides for the embodiment of the present application one Local schematic top plan view with induction electrode Rx Yu pixel definition district stacked structure;

The structural representation of the display floater of the function a kind of with fingerprint that Fig. 8 provides for the embodiment of the present application two Figure;

The preparation method of the display floater of the function a kind of with fingerprint that Fig. 9 provides for the embodiment of the present application Schematic flow sheet.

Detailed description of the invention

The embodiment of the present application provides the display floater of a kind of function with fingerprint and preparation method, display sets Standby, in order to realize the OLED display of function with fingerprint, reduce process complexity, cost-effective.

Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is carried out clearly Chu, be fully described by, it is clear that described embodiment be only some embodiments of the present application rather than Whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making creation Property work premise under the every other embodiment that obtained, broadly fall into the scope of the application protection.

It should be noted that thickness and the shape of each layer do not reflect actual proportions in illustrations, purpose is only It it is schematically illustrate teachings herein.

As in figure 2 it is shown, the display floater of the function a kind of with fingerprint of the embodiment of the present application one offer, bag Include: array base palte 201, the anode layer 202 being positioned on array base palte 201, be positioned on anode layer 202 Pixel definition district 203 and the multiple organic light-emitting units 204 surrounded by pixel definition district 203, it is positioned at pixel Insulated column 205 on definition 203, the multiplexing being positioned on insulated column 205 and organic light-emitting units 204 electricity Pole layer 206, the thin-film encapsulation layer 207 being positioned on multiplexing electrode layer 206, it is positioned in thin-film encapsulation layer 207 The second electrode lay 208, the cover plate 209 that is positioned on the second electrode lay 208;Wherein, multiplexing electrode layer 206 Including: cathode layer 2061 and the first electrode layer 2062, the multiplexing electrode layer 206 covering insulated column 205 is made Be the first electrode layer 2062, the multiplexing electrode layer 206 around the first electrode layer 2062 as cathode layer 2061, First electrode layer 2062 is arranged with layer with cathode layer 2061, due to the existence of insulated column 205 so that isolation Multiplexing electrode layer 206 on post 205 is isolated, and is not attached to multiplexing electrode layer 206 about, I.e. first electrode layer 2062 is not attached to cathode layer 2061.

The display floater of the function with fingerprint that the embodiment of the present application provides, by the first electrode layer 2062 Fingerprint identification function can be realized, such that it is able to realize function with fingerprint with the second electrode lay 208 OLED display, and, by the first electrode layer 2062 is arranged with layer with cathode layer 2061, permissible Save one layer of first electrode layer 2062 of extra making, such that it is able to reduce process complexity, cost-effective, with Time, thin-film encapsulation layer 207 is arranged between multiplexing electrode layer 206 and the second electrode lay 208, due to thin Film encapsulated layer 207 has functioned simultaneously as the insulating barrier between the first electrode layer 2062 and the second electrode lay 208, Therefore, it can save a layer insulating, such that it is able to reduce process complexity further, cost-effective.

Wherein, array base palte 201 can be by comprising the silicon oxide (silicon dioxide) the transparent glass as main component Glass is formed, it is possible to is formed by transparent plastic material, such as, can be polyether sulfone (PES), polyacrylate (PAR), Polyetherimide (PEI), PEN (PEN), poly terephthalic acid second Diester (PET), polyphenylene sulfide (PPS), polyallyl (polyallylate), polyimides, poly-carbonic acid Ester (PC), Triafol T (TAC), cellulose acetate propionate (CAP) or acrylate (acryl) In one, or combinations thereof constitute insulation organic transparent material.

The material of multiplexing electrode layer can be transparent conductive material, such as: tin indium oxide (ITO), Indium sesquioxide. Zinc (IZO), zinc oxide (ZnO) and Indium sesquioxide. (In2O3One or more in).The material of anode layer Material can be metal material silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), Nickel (Ni), neodymium (Nd), iridium (Ir) and chromium (Cr) neutralize one or more.

It is preferred that insulated column 205 can be inverted trapezoidal, due to inverted trapezoidal so that the first electrode 2062 Area big as far as possible, so, the mutual electricity between the first electrode layer 2062 and the second electrode lay 208 can be made Hold and increase, and mutual capacitance increase can improve the capacitance change that finger causes, thus improve fingerprint recognition energy Power.

Thin-film encapsulation layer 207 can be the laminated film that inorganic material is stacked with organic material, is used for preventing The most extraneous water oxygen enters inside OLED.

It is preferred that the display floater of above-mentioned function with fingerprint can also include: be positioned at array base palte 201 And the back plane circuitry layer 210 between anode layer 202, back plane circuitry layer 210 can include thin film transistor (TFT), Data wire and grid line.It is of course also possible to be not provided with back plane circuitry layer 210, external circuit is used to be driven.

Cover plate 209 can be inorganic transparent substrate, such as glass substrate, it is also possible to is organic transparency carrier, Such as pet substrate or polyether sulfone (PES), polyacrylate (PAR), Polyetherimide (PEI), The transparency carrier that PEN (PEN), polyethylene terephthalate (PET) etc. are formed, It is preferred that as in figure 2 it is shown, cover plate 209 can include the thin layer of polarizer 2091 of stacking from top to bottom With hardening coat 2092;Wherein, layer of polarizer 2091 can be used to improve the gold in back plane circuitry layer 210 Belonging to reflective problem, hardening coat 2092 can increase the scratch resistance on polaroid surface in layer of polarizer 2091 Ability.

It should be noted that see Fig. 3, the multiple organic light-emitting units 204 surrounded by pixel definition district 203 Becoming array distribution, Fig. 3 only demonstrates that three conducts therein represent, specially organic light-emitting units 204R, Organic light-emitting units 204G and organic light-emitting units 204B, they correspond to show red, green and blue three kinds Three organic light-emitting units of color.It is, of course, also possible to the organic light-emitting units of other color, the most in vain Color or yellow, the embodiment of the present application does not limit the color of organic light-emitting units.Organic light-emitting units 204 The hole transmission layer of stacking from top to bottom, organic layer and electron transfer layer can be included.Pixel definition district 203 Limit each organic light-emitting units 204 region, there is insulation and nontransparent character.

Seeing Fig. 4, the first electrode layer 2062 includes a plurality of along the first axially extended first electrode, the second electricity Pole layer 208 includes a plurality of along the second axially extended second electrode, and wherein, first axially axially hangs down with second Directly.Wherein, the first electrode can be drive electrode or induction electrode, the second electrode can be induction electrode or Drive electrode, can be i.e. the first electrode be drive electrode, the second electrode is induction electrode, it is also possible to be One electrode is induction electrode, and the second electrode is drive electrode.

First electrode covers insulated column 205, is positioned in pixel definition district 203, and the second electrode also is located at pixel On definition 203, the i.e. second electrode is not positioned on organic light-emitting units 204, now, and the second electrode 2081 Material can be magnesium (Mg), the silver metal material such as (Ag), calcium (Ca), lithium (Li), aluminum (Al), Can also be tin indium oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and Indium sesquioxide. (In2O3) Deng metal oxide materials.It is all located in pixel definition district 203 by arranging the first electrode and the second electrode, I.e. it is positioned at the non-light-emitting area of display floater, does not so interfere with the aperture opening ratio of display.

Or the first electrode covers insulated column 205, is positioned in pixel definition district 203, and the second electrode is positioned at picture On element definition 203 and organic light-emitting units 204, now, the material of the second electrode can be electrically conducting transparent Material, can be tin indium oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and Indium sesquioxide. (In2O3) Deng metal oxide materials, certainly, the second electrode also can be not required to all transparent conductive materials, only needs Ensure that the part that the second electrode is positioned on organic light-emitting units 204 uses transparent conductive material.Pass through Arrange the second electrode to be positioned on pixel definition district 203 and organic light-emitting units 204, so can increase the second electricity The area of pole layer 208, so that the mutual capacitance between the first electrode layer 2062 and the second electrode lay 208 Increase, and mutual capacitance increase can improve the capacitance change that finger causes, thus improve fingerprint capacity.

In being embodied as, owing to the spacing between fingerprint valley and ridge is generally about 300-400 μm, in order to Realizing the reconstruction to fingerprint, the adjacent spacing between two drive electrode Tx or induction electrode Rx is not more than Spacing between paddy adjacent in fingerprint and ridge.It is preferred that as shown in Figure 4, between the first adjacent electrode Spacing T1 can be 30 to 80 μm;Adjacent spacing T2 between the second electrode can be 30 to 80μm。

In order to increase the mutual capacitance between the first electrode layer 2062 and the second electrode lay 208, can be by increasing Adding the first electrode and/or the area of the second electrode, the mode implemented has a variety of, it is for instance possible to use The pattern of drive electrode Tx as shown in Figure 5 and induction electrode Rx, Tx line is axially extending along first, Rx Line is axially extending along second, and described first is axially axially mutually perpendicular to second, each described Tx line bag Containing three parts, respectively Tx main line, a Tx branch line and the 2nd Tx branch line;Wherein, described Tx Main line is along the first axially extended Tx line;A described Tx branch line is positioned at described Tx main line side and folder Between two adjacent Rx lines, length is less than the spacing half between adjacent Tx line;Described second Tx branch line is at described Tx main line opposite side and is sandwiched between adjacent two bar Rx line, and length is less than adjacent Tx line between spacing half;Concrete, as in Fig. 5 the partial enlarged drawing of Tx line as shown in Figure 6, Each described Tx line comprises Tx main line 01, Tx branch line 02 and a 2nd Tx branch line 03;Often Article one, described Rx line also comprises three parts, respectively Rx main line, and a Rx branch line and the 2nd Rx prop up Line;Wherein, described Rx main line is along the first axially extended Rx line;A described Rx branch line is positioned at institute State Rx main line side and be sandwiched between adjacent two bar Rx line, between length is less than between adjacent Rx line Away from half;Described 2nd Rx branch line be positioned at described Rx main line opposite side and be sandwiched in adjacent two bar Rx line it Between, length is less than the spacing half between adjacent Rx line.All it is only positioned at the first electrode and the second electrode As a example by pixel definition district, the distribution patterns of its drive electrode Tx and induction electrode Rx can be as shown in Figure 7.

Seeing Fig. 8, the display floater of the function a kind of with fingerprint that the embodiment of the present application two provides, with this The difference of the display floater of the function a kind of with fingerprint that application embodiment one provides is: thin-film encapsulation layer 207 between the second electrode lay 208 and cover plate 209, at multiplexing electrode layer 206 and the second electrode lay 208 Between be additionally provided with insulating barrier 211, this insulating barrier 211 makes the first electrode layer 2062 and the second electrode lay Insulate between 208.

Based on same inventive concept, the embodiment of the present application additionally provides the display surface of a kind of function with fingerprint The preparation method of plate, sees Fig. 9, and the method includes:

S11, on array base palte formed anode layer;

S12, on described anode layer formed pixel definition district;

S13, in described pixel definition district formed insulated column;

S14, on described anode layer, form multiple organic light-emitting units;Wherein, described pixel definition district bag Enclose each described organic light-emitting units;

S15, on described insulated column and described organic light-emitting units formed multiplexing electrode layer;Wherein, described Multiplexing electrode layer includes cathode layer and the first electrode layer, covers the multiplexing electrode layer of described insulated column as first Electrode layer, the multiplexing electrode layer around described first electrode layer as cathode layer, described first electrode layer and institute State cathode layer arrange with layer and be not attached to;

S16, on described multiplexing electrode layer formed the second electrode lay;

S17, on described the second electrode lay formed cover plate.

It is preferred that the method also includes:

Thin-film encapsulation layer is formed between described multiplexing electrode layer and described the second electrode lay.

It is preferred that the method also includes:

Insulating barrier is formed between described multiplexing electrode layer and described the second electrode lay;

Thin-film encapsulation layer is formed between described the second electrode lay and described cover plate.

In described pixel definition district, form insulated column it is preferred that described, specifically include: fixed in described pixel Justice forms inverted trapezoidal insulated column in district.

It is preferred that described formation insulated column includes: formed a plurality of along the first axially extended insulated column;

Described formation the second electrode lay includes: formed a plurality of along the second axially extended second electrode;

Wherein, described first axially and described second axially vertical.

On described the second electrode lay, form cover plate it is preferred that described, specifically include:

Described the second electrode lay is formed layer of polarizer;

Described layer of polarizer is formed hardening coat.

Below to be provided with back plane circuitry layer between array base palte and anode layer, thin-film encapsulation layer is arranged on multiplexing As a example by between electrode layer and the second electrode lay, illustrate the preparation of the display floater of function with fingerprint The step of method.

Step one, on array base palte, (such as can use photoetching process) formed include thin film transistor (TFT), The back plane circuitry layer of data wire and grid line;

Step 2, on back plane circuitry layer formed anode layer;

Step 3, on the anode layer formation pixel definition district;

Step 4, to need the place forming the first electrode layer to be formed in pixel definition district a plurality of axial along first The inverted trapezoidal insulated column extended;

Step 5, employing vacuum evaporation process, be deposited with into multiple organic light emissions of array distribution on the anode layer Unit (includes red organic light-emitting units, green organic light-emitting units and blue organic light-emitting units);Its In, pixel definition district surrounds each organic light-emitting units;

Step 6, employing vacuum evaporation process, be deposited with multiplexing electrode layer on insulated column and organic light-emitting units; Wherein, multiplexing electrode layer includes cathode layer and the first electrode layer, and the multiplexing electrode layer covering described insulated column is made Be the first electrode layer, the multiplexing electrode layer around the first electrode layer as cathode layer, the first electrode layer and negative electrode Layer arranges with layer and is not attached to;

Step 7, the mode using inorganic material and organic material to be stacked with on multiplexing electrode layer make thin Film encapsulated layer;

Step 8, formed in thin-film encapsulation layer a plurality of along the second axially extended second electrode as second electricity Pole layer;Wherein, first is the most axially vertical with second;

Step 9, form layer of polarizer on the second electrode layer;

Step 10, in layer of polarizer formed hardening coat.

Based on same inventive concept, the embodiment of the present application additionally provides the display of a kind of function with fingerprint and sets Standby, including the display floater of the function above-mentioned with fingerprint that the embodiment of the present application provides, this display device can Think: mobile phone, panel computer, television set, display, notebook computer, DPF, navigator Etc. any product with display function or parts.

In sum, the display floater of the function with fingerprint that the embodiment of the present application provides, including: array Substrate;Anode layer, is positioned on described array base palte;Pixel definition district and by described pixel definition district surround Multiple organic light-emitting units, described pixel definition district and described organic light-emitting units are positioned on described anode layer; Insulated column, is positioned in described pixel definition district;Multiplexing electrode layer, is positioned at described insulated column and described organic On light unit, described multiplexing electrode layer includes cathode layer and the first electrode layer;Wherein, described insulated column is covered Multiplexing electrode layer as the first electrode layer, the multiplexing electrode layer around described first electrode layer is as negative electrode Layer, described first electrode layer and described cathode layer arrange with layer and are not attached to;The second electrode lay, is positioned at described On multiplexing electrode layer;Cover plate, is positioned on described the second electrode lay, by the first electrode layer and the second electrode lay Fingerprint identification function can be realized, such that it is able to realize the OLED display of function with fingerprint, and, By being arranged with layer with cathode layer by the first electrode layer, one layer of first electrode layer of extra making can be saved, from And process complexity can be reduced, cost-effective.

Obviously, those skilled in the art can carry out various change and modification without deviating from this Shen to the application Spirit and scope please.So, if the application these amendment and modification belong to the application claim and Within the scope of its equivalent technologies, then the application is also intended to comprise these change and modification.

Claims (15)

1. the display floater of a function with fingerprint, it is characterised in that including:
Array base palte;
Anode layer, is positioned on described array base palte;
Pixel definition district and the multiple organic light-emitting units surrounded by described pixel definition district, described pixel definition District and described organic light-emitting units are positioned on described anode layer;
Insulated column, is positioned in described pixel definition district;
Multiplexing electrode layer, is positioned on described insulated column and described organic light-emitting units, described multiplexing electrode layer bag Include cathode layer and the first electrode layer;Wherein, cover the multiplexing electrode layer of described insulated column as the first electrode layer, Multiplexing electrode layer around described first electrode layer as cathode layer, described first electrode layer and described cathode layer Arrange with layer and be not attached to;
The second electrode lay, is positioned on described multiplexing electrode layer;
Cover plate, is positioned on described the second electrode lay.
Display floater the most according to claim 1, it is characterised in that this display floater also includes thin Film encapsulated layer;Wherein, described thin-film encapsulation layer is between described multiplexing electrode layer and described the second electrode lay.
Display floater the most according to claim 1, it is characterised in that this display floater also includes: Insulating barrier and thin-film encapsulation layer;Wherein, described insulating barrier is positioned at described multiplexing electrode layer and described second electrode Between Ceng;Described thin-film encapsulation layer is between described the second electrode lay and described cover plate.
4. according to the display floater described in the arbitrary claim of claims 1 to 3, it is characterised in that described isolation Post is inverted trapezoidal.
5. according to the display floater described in the arbitrary claim of claims 1 to 3, it is characterised in that described first Electrode layer includes a plurality of along the first axially extended first electrode, and described the second electrode lay includes a plurality of along second Axially extended second electrode, wherein, described first axially and described second axially vertical.
Display floater the most according to claim 5, it is characterised in that each described first electrode package Include: master's first electrode, multiple first the first electrode being parallel to each other and multiple be parallel to each other second Prop up the first electrode;Wherein, described master's the first electrode is axially extending along first;Described first the first electrode position In described master the first electrode side and be sandwiched between adjacent two described master the first electrode, length is less than adjacent Described master the first electrode between spacing half;Described second the first electrode is positioned at described master's the first electrode Opposite side and being sandwiched between adjacent two described master the first electrode, length is less than adjacent described master the first electricity Spacing half between pole;
Each described second electrode includes: master's the second electrode, multiple first second electricity being parallel to each other Pole and multiple second the second electrode being parallel to each other;Wherein, described master's the second electrode is axially extending along second; Described first the second electrode is positioned at described master the second electrode side and is sandwiched in the described master of adjacent two second Between electrode, length is less than the spacing half between adjacent described master the second electrode;Described second second Electrode is at described master's the second electrode opposite side and is sandwiched between adjacent two described master the second electrode, length Less than the spacing half between adjacent described master the second electrode.
Display floater the most according to claim 5, it is characterised in that adjacent described first electrode Between spacing be 10 to 80 μm;
The adjacent spacing between described second electrode is 10 to 80 μm.
8. according to the display floater described in the arbitrary claim of claims 1 to 3, it is characterised in that described cover plate Layer of polarizer and hardening coat including stacking from top to bottom.
9. the display device of a function with fingerprint, it is characterised in that include claim 1~8 The display floater of the function with fingerprint described in one claim.
10. the preparation method of the display floater of a function with fingerprint, it is characterised in that the method bag Include:
Array base palte is formed anode layer;
Described anode layer is formed pixel definition district;
Described pixel definition district is formed insulated column;
Described anode layer is formed multiple organic light-emitting units;Wherein, described pixel definition district surrounds each Described organic light-emitting units;
Described insulated column and described organic light-emitting units are formed multiplexing electrode layer;Wherein, described multiplexing electricity Pole layer includes cathode layer and the first electrode layer, covers the multiplexing electrode layer of described insulated column as the first electrode Layer, the multiplexing electrode layer around described first electrode layer as cathode layer, described first electrode layer and described the moon Pole layer arranges with layer and is not attached to;
Described multiplexing electrode layer is formed the second electrode lay;
Described the second electrode lay is formed cover plate.
11. methods according to claim 10, it is characterised in that the method also includes:
Thin-film encapsulation layer is formed between described multiplexing electrode layer and described the second electrode lay.
12. methods according to claim 10, it is characterised in that the method also includes:
Insulating barrier is formed between described multiplexing electrode layer and described the second electrode lay;
Thin-film encapsulation layer is formed between described the second electrode lay and described cover plate.
13. according to the method described in the arbitrary claim of claim 10~12, it is characterised in that described described Form insulated column in pixel definition district, specifically include: in described pixel definition district, form inverted trapezoidal insulated column.
14. according to the method described in the arbitrary claim of claim 10~12, it is characterised in that described formation every Include from post: formed a plurality of along the first axially extended insulated column;
Described formation the second electrode lay includes: formed a plurality of along the second axially extended second electrode;
Wherein, described first axially and described second axially vertical.
15. according to the method described in the arbitrary claim of claim 10~12, it is characterised in that described described Form cover plate on the second electrode lay, specifically include:
Described the second electrode lay is formed layer of polarizer;
Described layer of polarizer is formed hardening coat.
CN201610391397.0A 2016-06-03 2016-06-03 The display panel and preparation method of fingerprint identification function, display equipment CN106024836B (en)

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