CN117472231A - Touch display device - Google Patents
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- CN117472231A CN117472231A CN202310689729.3A CN202310689729A CN117472231A CN 117472231 A CN117472231 A CN 117472231A CN 202310689729 A CN202310689729 A CN 202310689729A CN 117472231 A CN117472231 A CN 117472231A
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Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The embodiment of the application provides a touch display device. The touch display device comprises a driving substrate, a first electrode layer, a pixel definition layer, a light-emitting layer, a second electrode layer, a packaging layer, a reflecting layer and a touch electrode layer; the first electrode layer is arranged on one side of the driving substrate and comprises a plurality of electrode units; the pixel definition layer is arranged on the driving substrate and the first electrode layer, and a plurality of openings are formed in the pixel definition layer; the light-emitting layer comprises a plurality of light-emitting units, and the light-emitting units are arranged in the openings; the second electrode layer is arranged on the light-emitting layer and the pixel definition layer, and the packaging layer is arranged on the second electrode layer; the reflecting layer is arranged on the packaging layer and comprises a plurality of reflecting units; the touch electrode layer is arranged on the reflecting layer and comprises a plurality of touch electrodes, and the touch electrodes respectively correspond to the reflecting units. The touch display device can achieve higher light extraction rate, so that the light extraction efficiency of the touch display device can be improved.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a touch display device.
Background
Along with the development of touch technology and display technology, touch display devices are increasingly toughen by people, so that not only can space be saved and the touch display devices are convenient to carry, but also users can directly operate the touch display devices through fingers or a touch pen and the like, and the touch display devices are comfortable to use and very convenient. Currently, touch display devices are widely used in various technical fields, such as Personal Digital Assistants (PDAs), touch-based mobile phones, portable notebook computers, etc.
An active matrix organic light emitting display (Active Matrix Organic Lighting Emitting Display, AMOLED) is an emerging flat panel display, which is known as a new generation display that can replace Liquid Crystal Displays (LCDs) because of its advantages of active light emission, high contrast, fast response, light weight, etc.
Currently, touch-type AMOLED display devices obtained by combining a touch technology and an AMOLED display technology have been widely used. However, the conventional touch-type AMOLED display device has a problem of low light extraction rate, so that the light extraction efficiency of the touch-type AMOLED display device is low.
Disclosure of Invention
The embodiment of the application provides a touch display device, which can realize higher light extraction rate, so that the light extraction efficiency of the touch display device can be improved.
In a first aspect, an embodiment of the present application provides a touch display device, including:
a driving substrate;
the first electrode layer is arranged on one side of the driving substrate and comprises a plurality of electrode units arranged at intervals;
the pixel definition layer is arranged on one side of the driving substrate, provided with the first electrode layer, and provided with a plurality of openings, and the openings respectively correspond to the electrode units;
the light-emitting layer comprises a plurality of light-emitting units which are arranged at intervals, and the light-emitting units are arranged in the openings;
a second electrode layer disposed on the light emitting layer and the pixel defining layer;
the packaging layer is arranged on the second electrode layer;
the reflection layer is arranged on the packaging layer and comprises a plurality of reflection units which are arranged at intervals, and the reflection units are arranged corresponding to interval areas between adjacent openings on the pixel definition layer;
the touch electrode layer is arranged on the reflecting layer and comprises a plurality of touch electrodes which are arranged at intervals, and the touch electrodes respectively correspond to the reflecting units;
the reflectivity of the reflecting unit to visible light is larger than that of the touch electrode to visible light.
In some embodiments, the orthographic projection of the touch electrode on the driving substrate covers the orthographic projection of the corresponding reflection unit on the driving substrate.
In some embodiments, the thickness of the touch electrode is greater than the thickness of the reflection unit.
In some embodiments, the thickness of the touch electrode is 200nm-400nm, and the thickness of the reflection unit is 100nm-200nm.
In some embodiments, the material of the reflective layer is a metal.
In some embodiments, the material of the reflective layer includes at least one of silver, silver alloy, aluminum alloy, titanium, and titanium alloy.
In some embodiments, the material of the light emitting layer includes at least one of an organic light emitting material and an inorganic quantum dot light emitting material.
In some embodiments, the material of the second electrode layer comprises a metal and the material of the first electrode layer comprises at least one of a metal, a transparent conductive metal oxide, graphene, and carbon nanotubes.
In some embodiments, the touch display device further includes a planarization layer disposed on the touch electrode layer and the encapsulation layer.
In some embodiments, the first electrode layer is an anode, the second electrode layer is a cathode, and a hole injection layer and a hole transport layer are disposed between the first electrode layer and the light emitting layer, wherein the hole injection layer is disposed adjacent to the first electrode layer, and the hole transport layer is disposed adjacent to the light emitting layer; an electron injection layer and an electron transport layer are arranged between the second electrode layer and the light-emitting layer, wherein the electron injection layer is arranged close to the second electrode layer, and the electron transport layer is arranged close to the light-emitting layer.
According to the touch display device provided by the embodiment of the invention, the reflecting layer is arranged below the touch electrode layer, namely the plurality of reflecting units are respectively arranged below the plurality of touch electrodes, and as the reflectivity of the reflecting units to visible light is larger than that of the touch electrodes, when the emitted light of the light emitting unit is incident to the reflecting units positioned at the bottoms of the touch electrodes, the reflecting units can reflect the part of the light to form first reflected light, the first reflected light is reflected by the second electrode layer after reaching the second electrode layer to form second reflected light, and then the second reflected light is emitted from the interval area between the adjacent reflecting units and finally reaches the display surface of the touch display device; that is, the touch display device of the present application can utilize the two reflections of the reflective layer and the second electrode layer, so that a part of the light emitted by the light emitting unit is blocked or absorbed by the touch electrode layer to change the emitting direction, so as to emit from the upper side of the light emitting unit, thereby realizing a higher light extraction rate, so that the light extraction efficiency of the touch display device can be improved; in addition, when the light-emitting efficiency of the display device is higher, the problem that the temperature of the display device is increased due to the fact that the light is absorbed by the display device because the light is concentrated in the display device and cannot be emitted can be avoided, and therefore the service life of the touch display device can be prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 is a schematic structural diagram of a touch display device according to an embodiment of the present application.
Fig. 2 is an enlarged schematic view of the touch electrode and the reflection unit correspondingly disposed in fig. 1.
Fig. 3 is a schematic view of an optical path when an edge of the reflection unit provided in the embodiment of the present application exceeds an edge of the touch electrode.
Fig. 4 is a schematic view of an optical path of the touch display device according to the embodiment of the present application when displaying a single-color image.
Fig. 5 is a schematic view of an optical path of the touch display device according to the embodiment of the present application when displaying a white image.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1 and 2, the embodiment of the present application provides a touch display device 100, which includes a driving substrate 10, a first electrode layer, a pixel defining layer 30, a light emitting layer, a second electrode layer 50, an encapsulation layer 60, a reflective layer 70, and a touch electrode layer 80.
Referring to fig. 1, a first electrode layer is disposed on one side of a driving substrate 10, and the first electrode layer includes a plurality of electrode units 21 disposed at intervals. The first electrode layer may be an anode, for example. Illustratively, the material of the first electrode layer may include at least one of a metal, a transparent conductive metal oxide, graphene, and carbon nanotubes. Illustratively, the metallic material may include at least one of silver (Ag), aluminum (Al), copper (Cu), molybdenum (Mo), gold (Au), platinum (Pt), calcium (Ca), magnesium (Mg), and barium (Ba). Illustratively, the transparent conductive metal oxide may include at least one of indium tin oxide (ITO, in2O3: sn), aluminum doped zinc oxide (AZO, znO: al), fluorine doped tin oxide (FTO, snO2: F), antimony doped tin oxide (ATO, sn2O: sb).
Referring to fig. 1, the pixel defining layer 30 is disposed on the side of the driving substrate 10 having the first electrode layer, and a plurality of openings 31 are disposed on the pixel defining layer 30, wherein the plurality of openings 31 respectively correspond to the plurality of electrode units 21. It is understood that the plurality of openings 31 penetrate through the pixel defining layer 30, and the longitudinal section of the plurality of openings 31 may have an inverted trapezoid or rectangle. It will be appreciated that the pixel defining layer 30 may cover the edge area of each electrode unit 21, or may not cover it, i.e., the pixel defining layer 30 may be disposed around a plurality of electrode units 21, each opening 31 exposing a partial area (central area) of the corresponding electrode unit 21 when the pixel defining layer 30 covers the edge area of each electrode unit 21, or each opening 31 exposing the entire area of the corresponding electrode unit 21 when the pixel defining layer 30 is disposed around a plurality of electrode units 21.
Referring to fig. 1, the light emitting layer includes a plurality of light emitting units 41 disposed at intervals, and the plurality of light emitting units 41 are disposed in the plurality of openings 31.
Referring to fig. 1, the second electrode layer 50 is disposed on the light emitting layer and the pixel defining layer 30, and the encapsulation layer 60 is disposed on the second electrode layer 50. The second electrode layer 50 may be a cathode, for example. Illustratively, the material of the second electrode layer 50 may be a metal, and in some embodiments, the material of the second electrode layer 50 may include at least one of silver (Ag), aluminum (Al), copper (Cu), molybdenum (Mo), gold (Au), platinum (Pt), calcium (Ca), magnesium (Mg), and barium (Ba).
Referring to fig. 1, the reflective layer 70 is disposed on the encapsulation layer 60, and the reflective layer 70 includes a plurality of reflective units 71 disposed at intervals, where each of the plurality of reflective units 71 is disposed corresponding to a space region between adjacent openings 31 on the pixel defining layer 30. That is, the reflection unit 71 does not block the light emitting area of the touch display device 100, so that the aperture ratio of the touch display device 100 is not affected.
Referring to fig. 1, the touch electrode layer 80 is disposed on the reflective layer 70, and the touch electrode layer 80 includes a plurality of touch electrodes 81 disposed at intervals, and the plurality of touch electrodes 81 respectively correspond to the plurality of reflective units 71, wherein the reflectivity of the reflective units 71 to visible light is greater than the reflectivity of the touch electrodes 81 to visible light.
Referring to fig. 4 and 5, fig. 4 is a schematic light path diagram of the touch display device provided in the embodiment of the present application when displaying a monochrome image, fig. 5 is a schematic light path diagram of the touch display device provided in the embodiment of the present application when displaying a white image, in fig. 4 and 5, four light emitting units 41 sequentially arranged from left to right are sequentially a red light emitting unit, a green light emitting unit, a blue light emitting unit, and a red light emitting unit, that is, only the emission light path of the red light emitting unit is shown in fig. 4, and the emission light path of the red light emitting unit, the green light emitting unit, and the blue light emitting unit is shown in fig. 5, and as can be seen from fig. 4 and 5, when the emission light of the light emitting unit 41 reaches the reflective layer 70 with high reflectivity, the reflection light is reflected by the reflective layer 70, passes through the encapsulation layer 60 to reach the second electrode layer 50, and then is reflected by the second electrode layer 50, and then is emitted from above the light emitting unit 41 (that is, the area not covered by the reflective layer 70 and the touch electrode 81).
In the touch display device 100 provided by the embodiment of the invention, the reflective layer 70 is disposed under the layer of the touch electrode 81, that is, the plurality of reflective units 71 are disposed under the plurality of touch electrodes 81, and since the reflectivity of the reflective units 71 to visible light is greater than that of the touch electrodes 81, when the emitted light of the light emitting unit 41 is incident on the reflective units 71 at the bottom of the touch electrode 81, the reflective units 71 can reflect the light to form a first reflected light, after the first reflected light reaches the second electrode layer 50, the first reflected light is reflected by the second electrode layer 50 to form a second reflected light, and then the second reflected light is emitted from the interval area between the adjacent reflective units 71, and finally reaches the display surface of the touch display device 100; that is, the present application can utilize the two reflections of the reflective layer 70 and the second electrode layer 50 to change the outgoing direction of a portion of the light emitted by the light emitting unit 41 that is originally blocked or absorbed by the touch electrode 81 layer, so as to emit from above the light emitting unit 41, thereby realizing a higher light extraction rate, so that the light extraction efficiency of the touch display device 100 can be improved; in addition, when the light-emitting efficiency of the display device is high, the problem that the temperature of the display device is increased due to the fact that the light is absorbed by the display device because the light is concentrated in the display device and cannot be emitted can be avoided, and therefore the service life of the touch display device 100 can be prolonged.
Illustratively, the reflectance of the reflective element 71 to visible light is greater than or equal to 80%, such as 80%, 82%, 85%, 87%, 90%, 92%, 95%, 97%, 99%, 100%, etc. Illustratively, visible light is light having a wavelength between 390nm and 780 nm.
Illustratively, the material of the reflective layer 70 may be a metal. Illustratively, the material of the reflective layer 70 may include at least one of silver, silver alloy, aluminum alloy, titanium, and titanium alloy. In some embodiments, the material of the reflective layer 70 may be silver or an aluminum titanium alloy.
For example, the touch display device 100 of the embodiment of the present application may be a self-capacitance type touch display device or a mutual capacitance type touch display device, and when the touch display device 100 is a mutual capacitance type touch display device, the plurality of touch electrodes 81 in the touch electrode layer 80 may include a driving electrode and a receiving electrode.
Referring to fig. 1, the plurality of light emitting units 41 may include a red light emitting unit, a green light emitting unit, and a blue light emitting unit.
Referring to fig. 2, the front projection of the touch electrode layer 81 on the driving substrate 10 covers the front projection of the corresponding reflection unit 71 on the driving substrate 10, that is, the front projection area of the touch electrode layer 80 on the driving substrate 10 is greater than or equal to the front projection area of the reflection unit 71 on the driving substrate 10. It should be noted that, when the edge of the reflecting unit 71 exceeds the edge of the touch electrode 81, on one hand, the area of the electrode plate of the touch capacitor is affected, and thus the size of the touch capacitor is affected, so as to affect the touch performance of the touch display device 100, and on the other hand, the portion of the reflecting unit 71 protruding from the touch electrode 81 shields a part of the obliquely emitted light, so as to reduce the light output of the light emitting unit 41, and further reduce the light output efficiency of the touch display device 100.
As shown in fig. 3, when the width of the reflecting unit 71 is equal to the width of the touch electrode 81, the light emitting angle of the light emitting unit 41 is α, when the width of the reflecting unit 71 is greater than the width of the touch electrode 81, the light emitting angle of the light emitting unit 41 is β, β < α, that is, when the width of the reflecting unit 71 is greater than the width of the touch electrode 81 (that is, the edge of the reflecting unit 71 exceeds the edge of the touch electrode 81), the light emitting angle of the light emitting unit 41 is reduced, thereby reducing the light emitting amount of the light emitting unit 41 and further reducing the light emitting efficiency of the touch display device 100.
Referring to fig. 2, the width L1 of the touch electrode 81 is greater than or equal to the width L2 of the reflection unit 71 in any direction in a plane parallel to the driving substrate 10.
Referring to fig. 2, the thickness H1 of the touch electrode 81 is greater than the thickness H2 of the reflection unit 71. It is understood that when the thickness of the reflective unit 71 is too large, the size of the touch capacitance is affected, so as to affect the touch performance of the touch display device 100, and on the other hand, the flatness of the upper surface (i.e. the display surface) of the touch display device 100 is affected due to the too large thickness of the reflective unit 71.
Illustratively, the thickness H1 of the touch electrode 81 may be 200nm-400nm, such as 200nm, 220nm, 250nm, 280nm, 300nm, 320nm, 350nm, 380nm, 400nm, etc.
Illustratively, the thickness H2 of the reflective element 71 may be 100nm-200nm, such as 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, 160nm, 170nm, 180nm, 190nm, 200nm, etc.
Illustratively, the material of the touch electrode 81 may be metal. In some embodiments, the touch electrode 81 is a Ti/Al/Ti structure.
Illustratively, the material of the light emitting layer may include one or more of an organic light emitting material and a quantum dot light emitting material. It can be understood that, when the material of the Light Emitting layer is an Organic Light Emitting material, the touch display device 100 is an OLED (Organic Light-Emitting Diode) display device, and when the material of the Light Emitting layer is a quantum dot Light Emitting material, the touch display device 100 is a QLED (Quantum Dot Light Emitting Diodes, quantum dot Light Emitting Diode) display device.
Illustratively, the organic luminescent material is selected from one or more of tris [2- (p-tolyl) iridium (III) pyridinium, 4' -tris (carbazol-9-yl) triphenylamine, tris [2- (p-tolyl) iridium pyridinium, biaryl anthracene derivatives, stilbene aromatic derivatives, pyrene derivatives and fluorene derivatives.
ExampleThe quantum dot luminescent material is one or more selected from single-structure quantum dot, core-shell structure quantum dot and perovskite semiconductor material, the material of the single-structure quantum dot, the core material of the core-shell structure quantum dot and the shell material of the core-shell structure quantum dot are respectively selected from at least one of II-VI compound, IV-VI compound, III-V compound and I-III-VI compound, the II-VI compound is at least one selected from CdS, cdSe, cdTe, znS, znSe, znTe, znO, hgS, hgSe, hgTe, cdSeS, cdSeTe, cdSTe, znSeS, znSeTe, znSTe, hgSeS, hgSeTe, hgSTe, cdZnS, cdZnSe, cdZnTe, cdHgS, cdHgSe, cdHgTe, hgZnS, hgZnSe, hgZnTe, cdZnSeS, cdZnSeTe, cdZnSTe, cdHgSeS, cdHgSeTe, cdHgSTe, hgZnSeS, hgZnSeTe and HgZnSte, the IV-VI compound is at least one selected from SnS, snSe, snTe, pbS, pbSe, pbTe, snSeS, snSeTe, snSTe, pbSeS, pbSeTe, pbSTe, snPbS, snPbSe, snPbTe, snPbSSe, snPbSeTe, snPbSTe, the III-V compound is at least one selected from GaN, gaP, gaAs, gaSb, alN, alP, alAs, alSb, inN, inP, inAs, inSb, gaNP, gaNAs, gaNSb, gaPAs, gaPSb, alNP, alNAs, alNSb, alPAs, alPSb, inNP, inNAs, inNSb, inPAs, inPSb, gaAlNP, gaAlNAs, gaAlNSb, gaAlPAs, gaAlPSb, gaInNP, gaInNAs, gaInNSb, gaInPAs, gaInPSb, inAlNP, inAlNAs, inAlNSb, inAlPAs and InAlPSb, and the I-III-VI compound is selected from CuInS 2 、CuInSe 2 AgInS 2 The perovskite-type semiconductor material is selected from at least one of a doped or undoped inorganic perovskite-type semiconductor, or an organic-inorganic hybrid perovskite-type semiconductor.
Illustratively, when the first electrode layer is an anode and the second electrode layer 50 is a cathode, a hole injection layer and a hole transport layer may be further disposed between the first electrode layer and the light emitting layer, wherein the hole injection layer is disposed adjacent to the first electrode layer and the hole transport layer is disposed adjacent to the light emitting layer; an electron injection layer and an electron transport layer may be further disposed between the second electrode layer 50 and the light emitting layer, wherein the electron injection layer is disposed adjacent to the second electrode layer 50 and the electron transport layer is disposed adjacent to the light emitting layer.
Illustratively, the material of the hole injection layer is selected from at least one of 2,3,6,7,10, 11-hexacyano-1, 4,5,8,9, 12-hexaazabenzophenanthrene, poly (3, 4-ethylenedioxythiophene) -polystyrene sulfonic acid (PEDOT: PSS), polydioxyethyl-stopper-Phenone (PEDOT), 4' -tris (N-3-methylphenyl-N-phenylamino) triphenylamine, tetracyanoquinodimethane, copper phthalocyanine, nickel oxide, molybdenum oxide, tungsten oxide, vanadium oxide, molybdenum sulfide, tungsten sulfide, and copper oxide.
Illustratively, the material of the hole transport layer is selected from the group consisting of 4,4'-N, N' -dicarbazolyl-biphenyl (CBP), N '-diphenyl-N, N' -bis (1-naphthyl) -1,1 '-biphenyl-4, 4 "-diamine, N' -diphenyl-N, N '-bis (3-methylphenyl) - (1, 1' -biphenyl) -4,4 '-diamine, N' -bis (4- (N, N '-diphenyl-amino) phenyl) -N, N' -diphenyl benzidine, 4 '-tris (N-carbazolyl) -triphenylamine, 4' -tris (N-3-methylphenyl-N-phenylamino) triphenylamine, poly [ (9, 9 '-dioctylfluorene-2, 7-diyl) -co- (4, 4' - (N- (4-sec-butylphenyl) diphenylamine))]Poly (4-butylphenyl-diphenylamine) (poly-TPD), polyaniline, polypyrrole, poly (p-phenylenevinylene), poly (phenylenevinylene), poly [ 2-methoxy-5- (2-ethylhexyloxy) -1, 4-phenylenevinylene]And poly [ 2-methoxy-5- (3 ',7' -dimethyloctyloxy) -1, 4-phenylenevinylene]Copper phthalocyanine, aromatic tertiary amine, polynuclear aromatic tertiary amine, 4 '-bis (p-carbazolyl) -1,1' -biphenyl compound, N, N, N ', N' -tetraarylbenzidine, PEDOT: PSS and derivatives thereof, poly (N-vinylcarbazole) (PVK) and derivatives thereof, polymethacrylate and derivatives thereof, poly (9, 9-octylfluorene) and derivatives thereof, polyspirofluorene and derivatives thereof, N, N '-bis (naphthalen-1-yl) -N, N' -diphenyl benzidine, spiroNPB, doped graphene, undoped graphene, C 60 Doped or undoped NiO, doped or undoped MoO 3 WO, doped or undoped 3 Doped or undoped V 2 O 5 Doped or undoped P-type gallium nitride, doped or undoped CrO 3 At least one of doped or undoped CuO.
Illustratively, the material of the electron injection layer may include at least one of cesium carbonate, cesium fluoride, cesium azide, and lithium fluoride.
Illustratively, the material of the electron transport layer may includeAt least one of metal oxide, doped metal oxide, 2-6 group semiconductor material, 3-5 group semiconductor material and 1-3-6 group semiconductor material, and metal oxide is selected from ZnO, baO, tiO 2 、SnO 2 At least one of (a) and (b); the metal oxide in the doped metal oxide is selected from ZnO and TiO 2 、SnO 2 At least one doping element selected from Al, mg, li, in, ga, and at least one group 2-6 semiconductor material selected from ZnS, znSe, cdS; the 3-5 semiconductor group material is at least one of InP and GaP; the group 1-3-6 semiconductor material is at least one selected from CuInS and CuGaS.
Referring to fig. 1, the driving substrate 10 includes a substrate 11 and a thin film transistor layer 12 stacked together, wherein a first electrode layer is disposed on a side of the thin film transistor layer 12 away from the substrate 11, and the first electrode layer is electrically connected to the thin film transistor layer 12.
Illustratively, the encapsulation layer 60 may include organic material layers and inorganic material layers alternately stacked.
Illustratively, the inorganic material layer may include silicon nitride (SiN x ) Silicon oxide (SiO) x ) Silicon oxynitride (SiO) x N y ) At least one of them.
The organic material layer may include at least one of polyacrylate, parylene, polyimide, polytetrafluoroethylene, a copolymer of fluorinated ethylene propylene, a perfluoroalkoxy copolymer resin, a copolymer of ethylene and tetrafluoroethylene, parylene, and the like.
Referring to fig. 1, the touch display device 100 may further include a planarization layer 90 disposed on the touch electrode layer 80 and the encapsulation layer 60. Illustratively, the material of the planar layer 90 is an organic material, such as a resin material.
Illustratively, the light transmittance of both the planarization layer 90 and the encapsulation layer 60 to visible light is 90% or more, such as 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, 100%, etc.
The touch display device provided in the embodiment of the application is described in detail above. Specific examples are set forth herein to illustrate the principles and embodiments of the present application, with the description of the examples given above only to assist in understanding the present application. Meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. A touch display device, comprising:
a driving substrate;
the first electrode layer is arranged on one side of the driving substrate and comprises a plurality of electrode units arranged at intervals;
the pixel definition layer is arranged on one side of the driving substrate, provided with the first electrode layer, and provided with a plurality of openings, and the openings respectively correspond to the electrode units;
the light-emitting layer comprises a plurality of light-emitting units which are arranged at intervals, and the light-emitting units are arranged in the openings;
a second electrode layer disposed on the light emitting layer and the pixel defining layer;
the packaging layer is arranged on the second electrode layer;
the reflection layer is arranged on the packaging layer and comprises a plurality of reflection units which are arranged at intervals, and the reflection units are arranged corresponding to interval areas between adjacent openings on the pixel definition layer;
the touch electrode layer is arranged on the reflecting layer and comprises a plurality of touch electrodes which are arranged at intervals, and the touch electrodes respectively correspond to the reflecting units;
the reflectivity of the reflecting unit to visible light is larger than that of the touch electrode to visible light.
2. The touch display device of claim 1, wherein the orthographic projection of the touch electrode on the driving substrate covers the orthographic projection of the corresponding reflection unit on the driving substrate.
3. The touch display device of claim 1, wherein a thickness of the touch electrode is greater than a thickness of the reflection unit.
4. A touch display device according to claim 3, wherein the thickness of the touch electrode is 200nm-400nm, and/or; the thickness of the reflecting unit is 100nm-200nm.
5. The touch display device of claim 1, wherein the reflective layer is made of metal.
6. The touch display device of claim 5, wherein the reflective layer comprises at least one of silver, silver alloy, aluminum alloy, titanium, and titanium alloy.
7. The touch display device according to claim 1, wherein the material of the light emitting layer includes at least one of an organic light emitting material and an inorganic quantum dot light emitting material.
8. The touch display device of claim 1, wherein the material of the second electrode layer comprises a metal and the material of the first electrode layer comprises at least one of a metal, a transparent conductive metal oxide, graphene, and carbon nanotubes.
9. The touch display device of claim 1, further comprising a planar layer disposed over the touch electrode layer and the encapsulation layer.
10. The touch display device according to any one of claims 1 to 9, wherein the first electrode layer is an anode, the second electrode layer is a cathode, and a hole injection layer and a hole transport layer are disposed between the first electrode layer and the light emitting layer, wherein the hole injection layer is disposed close to the first electrode layer, and the hole transport layer is disposed close to the light emitting layer; an electron injection layer and an electron transport layer are arranged between the second electrode layer and the light-emitting layer, wherein the electron injection layer is arranged close to the second electrode layer, and the electron transport layer is arranged close to the light-emitting layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310689729.3A CN117472231A (en) | 2023-06-09 | 2023-06-09 | Touch display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310689729.3A CN117472231A (en) | 2023-06-09 | 2023-06-09 | Touch display device |
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| CN117472231A true CN117472231A (en) | 2024-01-30 |
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