Display panel and display device

Abstract

The present disclosure provides a display panel and a display device, belonging to the field of display technology. The display panel includes: a display function layer; a functional electrode layer located on one side of the display function layer; a transparent conductive layer located on a side of the functional electrode layer away from the display function layer and electrically connected to the functional electrode layer, wherein the transparent conductive layer includes at least one metal layer and one transparent metal oxide conductive layer, and the thickness of the transparent metal oxide conductive layer is greater than the thickness of the metal layer. The technical solution of the present disclosure can improve the signal-to-noise ratio of the sensing signal.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) display devices and QLED (Quantum Dot Light Emitting Diodes) display devices have been listed as the next generation display technology with great development prospects due to their advantages such as thinness, lightness, wide viewing angle, active light emission, continuously adjustable light color, low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and flexible display.

[0003] In the related technology, functions such as fingerprint recognition or touch control can be integrated into the OLED display, but there are problems such as low signal-to-noise ratio. Summary of the invention

[0004] The technical problem to be solved by the present disclosure is to provide a display panel and a display device, which can improve the signal-to-noise ratio of the sensing signal.

[0005] To solve the above technical problems, the embodiments of the present disclosure provide the following technical solutions:

[0006] In one aspect, a display panel is provided, comprising:

[0007] Display functional layer;

[0008] A functional electrode layer located on one side of the display functional layer;

[0009] A transparent conductive layer located on a side of the functional electrode layer away from the display functional layer and electrically connected to the functional electrode layer, wherein the transparent conductive layer comprises at least a metal layer and a transparent metal oxide conductive layer, and the thickness of the transparent metal oxide conductive layer is greater than the thickness of the metal layer.

[0010] In some embodiments, the transparent conductive layer includes a transparent metal oxide conductive layer, a metal layer and a transparent metal oxide conductive layer stacked in sequence; or

[0011] The transparent conductive layer includes a transparent metal oxide conductive layer and a metal layer stacked in sequence, and the metal layer is located on a side of the transparent metal oxide conductive layer close to the display function layer.

[0012] In some embodiments, the ratio of the thickness of the transparent metal oxide conductive layer to the thickness of the metal layer is 5-7.

[0013] In some embodiments, the thickness of the metal layer is 10-250 angstroms.

[0014] In some embodiments, it also includes:

[0015] A metal wiring layer located on the light-emitting side of the display function layer, wherein the metal wiring layer includes a plurality of metal wirings;

[0016] An insulating layer located on a side of the metal wiring layer away from the display function layer;

[0017] The functional electrode layer is located on a side of the insulating layer away from the display functional layer, and the functional electrode layer is electrically connected to the metal wiring through a via hole penetrating the insulating layer.

[0018] In some embodiments, the functional electrode layer includes a plurality of touch electrodes and / or a plurality of fingerprint recognition electrodes.

[0019] In some embodiments, the transparent conductive layer includes a plurality of independent transparent electrode blocks, the touch electrodes correspond one-to-one to the transparent electrode blocks, and the orthographic projection of the touch electrodes on the display function layer is located within the orthographic projection of the corresponding transparent electrode block on the display function layer.

[0020] In some embodiments, the touch electrodes are made of metal grids.

[0021] In some embodiments, the display function layer includes a plurality of sub-pixels, the orthographic projection of the touch electrode on the display function layer covers at least one sub-pixel, and the orthographic projection of the metal grid on the display function layer is located between adjacent sub-pixels.

[0022] In some embodiments, the functional electrode layer includes P touch electrodes arranged in an array, the metal wiring layer includes P metal wirings, the touch electrodes are connected to the metal wirings in a one-to-one correspondence, and P is an integer greater than 1.

[0023] In some embodiments, the transparent conductive layer includes a plurality of mutually independent transparent electrode blocks, the fingerprint recognition electrodes correspond one-to-one to the transparent electrode blocks, and the orthographic projection of the fingerprint recognition electrodes on the display function layer is located within the orthographic projection of the corresponding transparent electrode block on the display function layer.

[0024] In some embodiments, the display function layer includes a plurality of sub-pixels, and an orthographic projection of one of the fingerprint recognition electrodes on the display function layer covers a sub-pixel or a portion of a sub-pixel.

[0025] In some embodiments, the functional electrode layer includes M columns of fingerprint recognition electrodes, the metal wiring layer includes 2M metal wirings extending along the column direction, the even-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-th metal wiring, the odd-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-1-th metal wiring, or the even-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-1-th metal wiring, and the odd-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-th metal wiring, where i is an integer greater than or equal to 1 and less than or equal to M;

[0026] or

[0027] The functional electrode layer includes N rows of fingerprint recognition electrodes, the metal routing layer includes 2N metal routings extending along the row direction, the even-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-th metal routing, the odd-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-1-th metal routing, or the even-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-1-th metal routing, and the odd-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-th metal routing, where j is an integer greater than or equal to 1 and less than or equal to N.

[0028] In some embodiments, the transmittance of the transparent conductive layer is no more than 60%.

[0029] In some embodiments, the transmittance of the transparent conductive layer is 40%-60%.

[0030] In some embodiments, it also includes:

[0031] A passivation layer is located on a side of the transparent conductive layer away from the display function layer.

[0032] In some embodiments, it also includes:

[0033] The flat layer is located on a side of the transparent conductive layer away from the display function layer, and the refractive index of the flat layer is 1.4-1.6.

[0034] In some embodiments, it also includes:

[0035] The black matrix is ​​located on a side of the transparent conductive layer away from the display function layer, and the orthographic projection of the metal wiring on the display function layer is located within the orthographic projection of the black matrix on the display function layer.

[0036] In some embodiments, it also includes:

[0037] A protective layer is located on a side of the transparent conductive layer away from the display function layer.

[0038] The embodiment of the present disclosure further provides a display device, comprising the display panel as described above and a driving chip, wherein the driving chip is connected to the functional electrode layer via a metal wiring.

[0039] The embodiments of the present disclosure have the following beneficial effects:

[0040] In the above scheme, the functional electrode layer is located outside the display functional layer, so that when the functional electrode layer is used to realize the touch function or the fingerprint recognition function, the distance between the functional electrode layer and the user's finger is close, which can improve the signal-to-noise ratio of the sensing signal; and a transparent conductive layer directly electrically connected to the functional electrode layer is provided on the side of the functional electrode layer away from the display functional layer. Since the transparent conductive layer has a light-transmitting property and will not affect the display of the display functional layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, by electrically connecting the transparent conductive layer to the functional electrode layer, the area of ​​the functional electrode layer can be indirectly increased, thereby further increasing the signal amount of the sensing signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a plan view schematic diagram of a touch substrate;

[0042] Figure 2 is a cross-sectional schematic diagram of a display panel according to an embodiment of the present disclosure;

[0043] Figure 3 It is a schematic plan view of a display panel according to an embodiment of the present disclosure;

[0044] Figure 4 FIG. 4 is a light transmittance curve of the display panel according to the embodiment of the present disclosure.

[0045] Figure 5 is a cross-sectional schematic diagram of a display panel according to another embodiment of the present disclosure;

[0046] Figure 6 It is a schematic plan view of a display panel according to another embodiment of the present disclosure;

[0047] Figure 7 FIG. 4 is a plan view of a display panel according to another embodiment of the present disclosure.

[0048] Reference numerals

[0049] 01 Touch electrode

[0050] 02 Driver chip

[0051] 03 Display function layer

[0052] 04 Buffer layer

[0053] 05 Insulation layer

[0054] 06 Metal routing layer

[0055] 07 Functional electrode layer

[0056] 071 Touch Electrode

[0057] 072 Fingerprint recognition electrode

[0058] 08 Transparent conductive layer

[0059] 081 Transparent Metal Oxide Conductive Layer

[0060] 082 Metal layer

[0061] 083 Transparent metal oxide conductive layer

[0062] 084 Transparent electrode block

[0063] 09 Passivation layer

[0064] 10 Black Matrix

[0065] 11, 12 Protective layer

[0066] 13 sub-pixels

[0067] 14 Vias DETAILED DESCRIPTION

[0068] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present disclosure more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0069] Embodiments of the present disclosure provide a display panel and a display device, which can improve the signal-to-noise ratio.

[0070] An embodiment of the present disclosure provides a display panel, including:

[0071] Display function layer, wherein the display function layer includes a driving circuit and a light-emitting unit, the driving circuit may include film layers such as a gate insulating layer, a gate metal layer, a source-drain metal layer, and an interlayer insulating layer, and the light-emitting unit may include an anode, a cathode, and a light-emitting layer located between the anode and the cathode;

[0072] A functional electrode layer located on one side of the display functional layer;

[0073] A transparent conductive layer located on a side of the functional electrode layer away from the display functional layer and electrically connected to the functional electrode layer, wherein the transparent conductive layer comprises at least a metal layer and a transparent metal oxide conductive layer, and the thickness of the transparent metal oxide conductive layer is greater than the thickness of the metal layer.

[0074] In this embodiment, the functional electrode layer is located outside the display functional layer. In this way, when the functional electrode layer is used to realize the touch function or the fingerprint recognition function, the distance between the functional electrode layer and the user's finger is close, which can improve the signal-to-noise ratio of the sensing signal; and a transparent conductive layer directly electrically connected to the functional electrode layer is provided on the side of the functional electrode layer away from the display functional layer. Since the transparent conductive layer has a light-transmitting property and will not affect the display of the display functional layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, by electrically connecting the transparent conductive layer to the functional electrode layer, the area of ​​the functional electrode layer can be indirectly increased, thereby further increasing the signal amount of the sensing signal.

[0075] The functional electrode layer may be made of metal or other conductive materials, such as transparent conductive metal oxide, graphene, etc.

[0076] In some embodiments, the transparent conductive layer includes a transparent metal oxide conductive layer, a metal layer and a transparent metal oxide conductive layer stacked in sequence; or

[0077] The transparent conductive layer includes a transparent metal oxide conductive layer and a metal layer stacked in sequence, and the metal layer is located on a side of the transparent metal oxide conductive layer close to the display function layer.

[0078] In some embodiments, the display panel further comprises:

[0079] A metal wiring layer located on the light-emitting side of the display function layer, wherein the metal wiring layer includes a plurality of metal wirings;

[0080] An insulating layer located on a side of the metal wiring layer away from the display function layer;

[0081] The functional electrode layer is located on a side of the insulating layer away from the display functional layer, and the functional electrode layer is electrically connected to the metal wiring through a via hole penetrating the insulating layer.

[0082] Wherein, the functional electrode layer may include multiple touch electrodes and / or multiple fingerprint recognition electrodes. In some embodiments, the functional electrode layer may include only multiple touch electrodes, so that the display panel can realize the touch function; in some embodiments, the functional electrode layer may include only multiple fingerprint recognition electrodes, so that the display panel can realize the fingerprint recognition function; in some embodiments, the functional electrode layer may include multiple fingerprint recognition electrodes and multiple touch electrodes, and the multiple fingerprint recognition electrodes and the multiple touch electrodes may be arranged in different layers, so that the display panel can realize the touch function and the fingerprint recognition function at the same time.

[0083] like Figure 1As shown, the functional electrode layer may include a plurality of mutually independent touch electrodes 01, and the touch electrodes 01 are connected to metal wirings through vias penetrating the insulating layer, and the metal wirings are connected to the driving chip 02, and the display panel integrated touch function may be realized through the functional electrode layer. In order not to affect the display of the display function layer, the touch electrode may adopt a metal grid, that is, the functional electrode layer includes a plurality of mutually independent metal grid electrode blocks, and each metal grid electrode block is a touch electrode, and the transparent conductive layer includes a plurality of mutually independent transparent electrode blocks, and the transparent electrode blocks correspond to the metal grid electrode blocks one by one, and the transparent electrode blocks are electrically connected to the corresponding metal grid electrode blocks, and the orthographic projection of the touch electrode on the display function layer is located within the orthographic projection of the corresponding transparent electrode block on the display function layer. When realizing the touch function, since the touch electrode is located outside the display function layer, the distance between the touch electrode and the user's finger is close, which can improve the signal-to-noise ratio of the touch sensing signal, and the touch sensing is not easily affected by the display screen signal; furthermore, since the touch electrode is electrically connected to the transparent conductive layer, the area of ​​the touch electrode can be indirectly increased, thereby increasing the signal amount of the touch sensing signal and improving the touch accuracy.

[0084] In some embodiments, the functional electrode layer includes P touch electrodes arranged in an array, the metal wiring layer includes P metal wirings, the touch electrodes are connected to the metal wirings in a one-to-one correspondence, and P is an integer greater than 1.

[0085] In a specific example, Figure 2 As shown, the display panel includes a display function layer 03, a buffer layer 04 located on the display function layer 03, a metal wiring layer 06 is arranged on the buffer layer 04, the metal wiring layer 06 includes a plurality of metal wirings, and the metal wirings are touch electrode lead wirings; an insulating layer 05 covering the metal wiring layer 06, a functional electrode layer 07 located on the insulating layer 05, the functional electrode layer 07 is in the form of a metal grid, and is periodically disconnected to form a plurality of mutually independent metal grid-shaped touch electrodes, and the touch electrodes are connected to the metal wirings through vias penetrating the insulating layer 05; a transparent conductive layer 08 electrically connected to the functional electrode layer 07; a passivation layer 09 located on the transparent conductive layer 08; a black matrix 10 located on the passivation layer 09, wherein the orthographic projection of the metal wiring on the display function layer is located within the orthographic projection of the black matrix on the display function layer, so that the black matrix can shield the metal wiring to prevent the reflection of the metal wiring from affecting the display of the display function layer; a protective layer (Overcoat) 11 can protect the display panel.

[0086] Among them, the metal routing can adopt a single-layer structure or a multi-layer structure. In some embodiments, the metal routing can adopt a Ti / Al / Ti stacked structure, so that the metal routing has good conductivity; the insulating layer 05 can adopt an inorganic insulating material or an organic insulating material, such as using silicon nitride to make the insulating layer 05; the functional electrode layer 07 can adopt a single-layer structure or a multi-layer structure. In some embodiments, the functional electrode layer 07 can adopt a Ti / Al / Ti stacked structure, so that the functional electrode layer has good conductivity.

[0087] Since the transparent conductive layer 08 has light-transmitting properties and will not affect the display of the display function layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, the area of ​​the touch electrode can be indirectly increased by electrically connecting the transparent conductive layer to the touch electrode, thereby further increasing the signal quantity of the touch sensing signal. Of course, in order to avoid different touch electrodes being connected together through the transparent conductive layer 08, the transparent conductive layer 08 also needs to be divided into multiple independent transparent electrode blocks, such as Figure 3 As shown, each transparent electrode block 084 is electrically connected to the corresponding touch electrode 071 .

[0088] like Figure 3 As shown, the display function layer includes a plurality of sub-pixels 13, the orthographic projection of the touch electrode 071 on the display function layer can cover at least one sub-pixel 13, and the orthographic projection of the metal grid on the display function layer is located between adjacent sub-pixels.

[0089] The transparent conductive layer 08 may include a transparent metal oxide conductive layer 081, a metal layer 082 and a transparent metal oxide conductive layer 083 stacked in sequence. To ensure the light transmittance of the transparent conductive layer 08, the thickness of the metal layer 082 may be 10-250 angstroms.

[0090] In some embodiments, the thickness ratio of the transparent metal oxide conductive layer to the metal layer may be 5-7.

[0091] In some embodiments, the transparent metal oxide conductive layer may be made of ITO or IZO, and the thickness may be about 700 angstroms, such as 500-700 angstroms, and the metal layer 082 may be made of a metal with good conductivity, such as Ag, Ti, etc., and the thickness may be about 100 angstroms. In a specific example, the transparent conductive layer 08 may be a laminated structure of ITO / Ti / ITO.

[0092] In order to reduce the reflectivity of the surface of the OLED display function layer, the related technology often attaches a circular polarizer on the light-emitting side of the OLED display function layer. The circular polarizer can reduce the reflectivity of the surface of the OLED display function layer, but this will make the overall thickness of the display panel too large. When applied to the field of flexible display, it will affect the repeated folding ability of the display panel. In this embodiment, the thickness of the transparent metal oxide conductive layer 081, the metal layer 082 and the transparent metal oxide conductive layer 083 can be adjusted so that the transmittance of the transparent conductive layer is not more than 60%, preferably 40%-60%. In this way, the transparent conductive layer can reduce the reflectivity of the surface of the display function layer, and there is no need to attach a circular polarizer on the light-emitting side of the display function layer. The overall thickness of the display panel can be reduced, which is beneficial to improving the repeated folding ability of the display panel.

[0093] The stacked structure formed by arranging the transparent metal oxide conductive layer 083 and the transparent metal oxide conductive layer 081 on both sides of the metal layer 082 can achieve a reflection reduction effect, so that the reflectivity of the display panel can be reduced. In addition, the thickness of the passivation layer 09 can be adjusted so that the passivation layer 09 and the transparent conductive layer 08 form an interference reflection reduction and anti-reflection structure, which plays a role in reducing the reflectivity of the surface of the OLED display functional layer. In addition, the passivation layer 09 can also prevent water and oxygen from corroding the functional film layer in the display panel. The passivation layer 09 can be made of an inorganic insulating material, such as silicon nitride or silicon oxide or a combination of the two, and the thickness can be about 800 angstroms, such as 600-2000 angstroms.

[0094] Among them, the thickness of the protective layer 11 can be about 2 microns, and it is made of a material with a relatively low refractive index, and the refractive index can be 1.4-1.6. This is because the surface reflectivity of the display substrate n = [(n1-n2) / (n1+n2)]^2, where n1 is the surface refractive index, n2 is the air refractive index, and the surface refractive index of the transparent conductive layer is about 2.0. It is necessary to form a low refractive index material on the surface of the transparent conductive layer to reduce reflection at the interface with the air.

[0095] In some embodiments, when the transparent conductive layer 08 adopts a laminated structure of ITO / Ti / ITO, the thickness of ITO is 700 angstroms, and the thickness of Ti is 100 angstroms, the transmittance curve of the semi-transparent structure formed by the transparent conductive layer 08 is as follows: Figure 4 shown.

[0096] In this embodiment, the transmittance of the semi-transparent structure composed of the transparent conductive layer 08 is about 40-60%, the surface reflectivity of the black matrix is ​​about 3%, and the reflectivity of the conventional OLED display function layer itself is about 46%. However, after adopting the structure of this embodiment, the reflectivity of the display panel can be reduced to 5%, and at the same time it has a touch function.

[0097] In some embodiments, the functional electrode layer may include a plurality of independent fingerprint recognition electrodes, the fingerprint recognition electrodes are connected to the metal wiring through the vias penetrating the insulating layer, and the fingerprint recognition function can be realized through the fingerprint recognition electrodes. In order not to affect the display of the display function layer, the fingerprint recognition electrode may adopt a metal grid, that is, the functional electrode layer includes a plurality of independent metal grid electrode blocks, each metal grid electrode block is a fingerprint recognition electrode, the transparent conductive layer includes a plurality of independent transparent electrode blocks, the transparent electrode blocks correspond to the metal grid electrode blocks one by one, the transparent electrode blocks are electrically connected to the corresponding metal grid electrode blocks, and the positive projection of the fingerprint recognition electrode on the display function layer is located within the positive projection of the corresponding transparent electrode block on the display function layer. When realizing the fingerprint recognition function, since the fingerprint recognition electrode is located outside the display function layer, the distance between the fingerprint recognition electrode and the user's finger is close, which can improve the signal-to-noise ratio of the fingerprint recognition sensing signal, and the fingerprint recognition sensing is not easily affected by the display screen signal and will not be interfered; furthermore, since the fingerprint recognition electrode is electrically connected to the transparent conductive layer, the area of ​​the fingerprint recognition electrode can be indirectly increased, thereby increasing the signal amount of the fingerprint recognition sensing signal, making the fingerprint signal easier to be recognized, and improving the fingerprint recognition accuracy.

[0098] In a specific example, Figure 5 As shown, the display panel includes a display function layer 03, a buffer layer 04 located on the display function layer 03, a metal routing layer 06 is arranged on the buffer layer 04, the metal routing layer 06 includes a plurality of metal routings, and the metal routings are touch electrode lead-out routings; an insulating layer 05 covering the metal routing layer 06, a functional electrode layer 07 located on the insulating layer 05, the functional electrode layer 07 is in the form of a metal grid, and is periodically disconnected to form a plurality of mutually independent metal grid-shaped fingerprint recognition electrodes, and the fingerprint recognition electrodes are connected to the metal routings through vias penetrating the insulating layer 05; a transparent conductive layer 08 electrically connected to the functional electrode layer 07; a passivation layer 09 located on the transparent conductive layer 08; and a protective layer 12, which can protect the display panel.

[0099] Among them, the metal routing can adopt a single-layer structure or a multi-layer structure. In some embodiments, the metal routing can adopt a Ti / Al / Ti stacked structure, so that the metal routing has good conductivity; the insulating layer 05 can adopt an inorganic insulating material or an organic insulating material, such as using silicon nitride to make the insulating layer 05; the functional electrode layer 07 can adopt a single-layer structure or a multi-layer structure. In some embodiments, the functional electrode layer 07 can adopt a Ti / Al / Ti stacked structure, so that the functional electrode layer has good conductivity.

[0100] Since the transparent conductive layer 08 has light-transmitting properties and will not affect the display of the display function layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, the transparent conductive layer is electrically connected to the fingerprint recognition electrode, which can indirectly increase the area of ​​the fingerprint recognition electrode and further increase the signal amount of the fingerprint recognition sensing signal. Of course, in order to avoid different fingerprint recognition electrodes being connected together through the transparent conductive layer 08, the transparent conductive layer 08 also needs to be divided into multiple independent transparent electrode blocks, such as Figure 6 As shown, each transparent electrode block 084 is electrically connected to the corresponding fingerprint identification electrode 072 .

[0101] like Figure 6 As shown, the display function layer includes multiple sub-pixels 13, and the orthographic projection of one fingerprint recognition electrode 072 on the display function layer can cover a sub-pixel 13 or a part of a sub-pixel 13. When the fingerprint recognition electrode 072 adopts a metal grid, the orthographic projection of the metal grid on the display function layer is located between adjacent sub-pixels.

[0102] In order to improve the resolution of fingerprint recognition, it is necessary to have enough fingerprint recognition electrodes 072, which will also result in a smaller area of ​​a single fingerprint recognition electrode 072. Figure 6 As shown, the area of ​​a single fingerprint recognition electrode 072 is only equivalent to the area of ​​one or half of a sub-pixel 13, which will result in a very small signal amount of the fingerprint recognition signal; in this embodiment, a transparent electrode block 084 is electrically connected to the fingerprint recognition electrode 072, which indirectly increases the area of ​​the fingerprint recognition electrode 072. In this way, even if the area of ​​a single fingerprint recognition electrode 072 is very small, the signal amount of the fingerprint recognition signal and the fingerprint recognition accuracy can be guaranteed.

[0103] like Figure 6 As shown, the fingerprint recognition electrode 072 is connected to the metal wiring layer through the via 14, the functional electrode layer may include M columns of the fingerprint recognition electrodes, each column includes a plurality of fingerprint recognition electrodes, the metal wiring layer includes 2M metal wirings extending along the column direction, the even-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-th metal wiring, the odd-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-1th metal wiring, or the even-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-1th metal wiring, the odd-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-th metal wiring, i is an integer greater than or equal to 1 and less than or equal to M;

[0104] or

[0105] like Figure 7As shown, the functional electrode layer may include N rows of fingerprint recognition electrodes, each row includes a plurality of fingerprint recognition electrodes, the metal wiring layer includes 2N metal wirings extending along the row direction, the even-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-th metal wiring, the odd-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-1-th metal wiring, or the even-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-1-th metal wiring, the odd-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-th metal wiring, and j is an integer greater than or equal to 1 and less than or equal to N.

[0106] In this embodiment, the transparent conductive layer 08 may include a transparent metal oxide conductive layer 081, a metal layer 082 and a transparent metal oxide conductive layer 083 stacked in sequence. To ensure the light transmittance of the transparent conductive layer 08, the thickness of the metal layer 082 may be 10-250 angstroms.

[0107] In some embodiments, the thickness ratio of the transparent metal oxide conductive layer to the metal layer may be 5-7.

[0108] In some embodiments, the transparent metal oxide conductive layer may be made of ITO or IZO, and the thickness may be about 700 angstroms, such as 500-700 angstroms. The metal layer 082 may be made of a metal with good conductivity, such as Ag, Ti, etc., and the thickness may be about 10-250 angstroms. In a specific example, the transparent conductive layer 08 may be a laminated structure of ITO / Ti / ITO.

[0109] In order to reduce the reflectivity of the surface of the OLED display function layer, the related technology often attaches a circular polarizer on the light-emitting side of the OLED display function layer. The circular polarizer can reduce the reflectivity of the surface of the OLED display function layer, but this will make the overall thickness of the display panel too large. When applied to the field of flexible display, it will affect the repeated folding ability of the display panel. In this embodiment, the thickness of the transparent metal oxide conductive layer 081, the metal layer 082 and the transparent metal oxide conductive layer 083 can be adjusted so that the transmittance of the transparent conductive layer is not more than 60%, preferably 40%-60%. In this way, the transparent conductive layer can reduce the reflectivity of the surface of the display function layer, and there is no need to attach a circular polarizer on the light-emitting side of the display function layer. The overall thickness of the display panel can be reduced, which is beneficial to improving the repeated folding ability of the display panel.

[0110] The stacked structure formed by arranging the transparent metal oxide conductive layer 083 and the transparent metal oxide conductive layer 081 on both sides of the metal layer 082 can achieve a reflection reduction effect, thereby reducing the reflectivity of the display panel.

[0111] In addition, the thickness of the passivation layer 09 can be adjusted so that the passivation layer 09 and the transparent conductive layer 08 form an interference anti-reflection and anti-transmittance structure, thereby reducing the reflectivity of the surface of the OLED display functional layer. In addition, the passivation layer 09 can also prevent water and oxygen from corroding the functional film layer in the display panel. The passivation layer 09 can be made of inorganic insulating materials, such as silicon nitride or silicon oxide or a combination of the two, and the thickness can be about 800 angstroms, such as 600-2000 angstroms.

[0112] Among them, the thickness of the protective layer 12 can be about 2 microns, and it is made of a material with a relatively low refractive index, and the refractive index can be 1.4-1.6. This is because the surface reflectivity of the display substrate n = [(n1-n2) / (n1+n2)]^2, where n1 is the surface refractive index, n2 is the air refractive index, and the surface refractive index of the transparent conductive layer is about 2.0. It is necessary to form a low refractive index material on the surface of the transparent conductive layer to reduce reflection at the interface with the air.

[0113] In some embodiments, when the transparent conductive layer 08 adopts a laminated structure of ITO / Ti / ITO, the thickness of ITO is 700 angstroms, and the thickness of Ti is 100 angstroms, the transmittance curve of the semi-transparent structure formed by the transparent conductive layer 08 is as follows: Figure 4 In this embodiment, the transmittance of the semi-transparent structure composed of the transparent conductive layer 08 is about 40-60%, the reflectivity of the black matrix surface is about 3%, and the reflectivity of the conventional OLED display function layer itself is about 46%. However, after adopting the structure of this embodiment, the reflectivity of the display panel can be reduced to 5%, and at the same time, it has the fingerprint recognition function.

[0114] The embodiment of the present disclosure further provides a display device, comprising the display panel as described above and a driving chip, wherein the driving chip is connected to the functional electrode layer via a metal wiring.

[0115] The display device includes but is not limited to: a radio frequency unit, a network module, an audio output unit, an input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply. Those skilled in the art will appreciate that the structure of the above-mentioned display device does not constitute a limitation on the display device, and the display device may include more or less of the above-mentioned components, or a combination of certain components, or different component arrangements. In the embodiments of the present disclosure, the display device includes but is not limited to a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.

[0116] The display device may be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device further includes a flexible circuit board, a printed circuit board and a backplane.

[0117] The present disclosure also provides a method for manufacturing a display panel, including:

[0118] Providing a display function layer, wherein the display function layer includes a driving circuit and a light-emitting unit, the driving circuit may include film layers such as a gate insulating layer, a gate metal layer, a source-drain metal layer, and an interlayer insulating layer, and the light-emitting unit may include an anode, a cathode, and a light-emitting layer located between the anode and the cathode;

[0119] forming a functional electrode layer on one side of the display functional layer;

[0120] A transparent conductive layer electrically connected to the functional electrode layer is formed on a side of the functional electrode layer away from the display functional layer, wherein the transparent conductive layer comprises at least a metal layer and a transparent metal oxide conductive layer, and the thickness of the transparent metal oxide conductive layer is greater than the thickness of the metal layer.

[0121] In this embodiment, the functional electrode layer is located outside the display functional layer. In this way, when the functional electrode layer is used to realize the touch function or the fingerprint recognition function, the distance between the functional electrode layer and the user's finger is close, which can improve the signal-to-noise ratio of the sensing signal; and a transparent conductive layer directly electrically connected to the functional electrode layer is provided on the side of the functional electrode layer away from the display functional layer. Since the transparent conductive layer has a light-transmitting property and will not affect the display of the display functional layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, by electrically connecting the transparent conductive layer to the functional electrode layer, the area of ​​the functional electrode layer can be indirectly increased, thereby further increasing the signal amount of the sensing signal.

[0122] The functional electrode layer may be made of metal or other conductive materials, such as transparent conductive metal oxide, graphene, etc.

[0123] In some embodiments, the method further comprises:

[0124] Forming a metal wiring layer on the light-emitting side of the display function layer, wherein the metal wiring layer includes a plurality of metal wirings;

[0125] forming an insulating layer on a side of the metal wiring layer away from the display function layer;

[0126] Forming the functional electrode layer comprises:

[0127] The functional electrode layer is formed on a side of the insulating layer away from the display functional layer, and the functional electrode layer is electrically connected to the metal wiring through a via hole penetrating the insulating layer.

[0128] In some embodiments, Figure 1As shown, the functional electrode layer may include a plurality of independent touch electrodes 01, and the touch electrodes 01 are connected to the metal wiring through the via holes penetrating the insulating layer, and the metal wiring is connected to the driving chip 02, and the touch function can be realized through the functional electrode layer. In order not to affect the display of the display function layer, the touch electrode can be a metal grid, that is, the functional electrode layer includes a plurality of independent metal grid electrode blocks, each metal grid electrode block is a touch electrode, and the transparent conductive layer includes a plurality of independent transparent electrode blocks, and the transparent electrode blocks correspond to the metal grid electrode blocks one by one, and the transparent electrode blocks are electrically connected to the corresponding metal grid electrode blocks. When realizing the touch function, since the touch electrode is located outside the display function layer, the distance between the touch electrode and the user's finger is close, which can improve the signal-to-noise ratio of the touch sensing signal, and the touch sensing is not easily affected by the display screen signal; furthermore, since the touch electrode is electrically connected to the transparent conductive layer, the area of ​​the touch electrode can be indirectly increased, thereby increasing the signal amount of the touch sensing signal and improving the touch accuracy.

[0129] When the functional electrode layer includes a plurality of mutually independent touch electrodes, the manufacturing method of this embodiment includes the following steps:

[0130] Step 1: providing a display function layer, which may be an OLED display function layer;

[0131] Step 2: Figure 2 As shown, a buffer layer 04 is formed on the display function layer;

[0132] The buffer layer 04 may be made of inorganic insulating materials, such as silicon nitride, silicon oxide, etc.

[0133] Step 3: depositing a metal layer on the buffer layer 04, and patterning the metal layer to form a metal wiring layer 06, wherein the metal wiring layer 06 includes a plurality of metal wirings, and the metal wirings are touch electrode lead-out wirings;

[0134] The metal wiring may adopt a single-layer structure or a multi-layer structure. In some embodiments, the metal wiring may adopt a stacked-layer structure of Ti / Al / Ti.

[0135] Step 4, forming an insulating layer 05 covering the metal wiring layer 06;

[0136] The insulating layer 05 may be made of an inorganic insulating material or an organic insulating material, for example, silicon nitride may be used as the insulating layer 05 .

[0137] Step 5: depositing a metal layer on the insulating layer 05, and patterning the metal layer to form a functional electrode layer 06;

[0138] The functional electrode layer 07 is in the form of a metal grid, which is periodically disconnected to form a plurality of mutually independent metal grid-shaped touch electrodes, and the touch electrodes are connected to the metal traces through vias penetrating the insulating layer 05. The functional electrode layer 07 can be a single-layer structure or a multi-layer structure. In some embodiments, the functional electrode layer 07 can be a Ti / Al / Ti stacked structure.

[0139] Step 6: forming a transparent conductive layer 08 electrically connected to the functional electrode layer 06;

[0140] The transparent conductive layer 08 may include a transparent metal oxide conductive layer 081, a metal layer 082 and a transparent metal oxide conductive layer 083 stacked in sequence. To ensure the light transmittance of the transparent conductive layer 08, the thickness of the metal layer 082 may be 10-250 angstroms.

[0141] In some embodiments, the transparent metal oxide conductive layer may be made of ITO or IZO, with a thickness of 700 angstroms, and the metal layer 082 may be made of a metal with good conductivity, such as Ag, Ti, etc., with a thickness of 100 angstroms. In a specific example, the transparent conductive layer 08 may be a laminated structure of ITO / Ti / ITO.

[0142] Step 7: forming a passivation layer 09 covering the transparent conductive layer 08;

[0143] Step 8, forming a black matrix 10 on the passivation layer 09;

[0144] The orthographic projection of the metal trace on the display function layer is located within the orthographic projection of the black matrix on the display function layer, so that the black matrix can shield the metal trace to prevent the reflection of the metal trace from affecting the display of the display function layer;

[0145] Step 9: forming a protective layer 11.

[0146] The protection layer 11 can protect the display panel.

[0147] Since the transparent conductive layer 08 has light-transmitting properties and will not affect the display of the display function layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, the area of ​​the touch electrode can be indirectly increased by electrically connecting the transparent conductive layer to the touch electrode, thereby further increasing the signal quantity of the touch sensing signal. Of course, in order to avoid different touch electrodes being connected together through the transparent conductive layer 08, the transparent conductive layer 08 also needs to be divided into multiple independent transparent electrode blocks, such as Figure 3 As shown, each transparent electrode block 084 is electrically connected to the corresponding touch electrode 071 .

[0148] In order to reduce the reflectivity of the surface of the OLED display function layer, the related technology often attaches a circular polarizer on the light-emitting side of the OLED display function layer. The circular polarizer can reduce the reflectivity of the surface of the OLED display function layer, but this will make the overall thickness of the display panel too large, which will affect the repeated folding ability of the display panel when used in the field of flexible display. In this embodiment, the thickness of the transparent metal oxide conductive layer 081, the metal layer 082 and the transparent metal oxide conductive layer 083 can be adjusted so that the transmittance of the transparent conductive layer is not more than 60%, preferably 40%-60%. In this way, the transparent conductive layer can reduce the reflectivity of the surface of the display function layer, and there is no need to attach a circular polarizer on the light-emitting side of the display function layer, which can reduce the overall thickness of the display panel, which is beneficial to improving the repeated folding ability of the display panel.

[0149] In some embodiments, the functional electrode layer may include a plurality of independent fingerprint recognition electrodes, and the fingerprint recognition electrodes are connected to the metal wiring through the vias penetrating the insulating layer, and the fingerprint recognition function can be realized through the fingerprint recognition electrodes. In order not to affect the display of the display function layer, the fingerprint recognition electrode can adopt a metal grid, that is, the functional electrode layer includes a plurality of independent metal grid electrode blocks, each metal grid electrode block is a fingerprint recognition electrode, and the transparent conductive layer includes a plurality of independent transparent electrode blocks, the transparent electrode blocks correspond to the metal grid electrode blocks one by one, and the transparent electrode blocks are electrically connected to the corresponding metal grid electrode blocks. When realizing the fingerprint recognition function, since the fingerprint recognition electrode is located outside the display function layer, the distance between the fingerprint recognition electrode and the user's finger is close, which can improve the signal-to-noise ratio of the fingerprint recognition sensing signal, and the fingerprint recognition sensing is not easily affected by the display screen signal and will not be interfered; furthermore, since the fingerprint recognition electrode is electrically connected with the transparent conductive layer, the area of ​​the fingerprint recognition electrode can be indirectly increased, thereby increasing the signal amount of the fingerprint recognition sensing signal, making the fingerprint signal easier to be recognized, and improving the fingerprint recognition accuracy.

[0150] When the functional electrode layer includes a plurality of fingerprint recognition electrodes that are independent of each other, the manufacturing method of this embodiment includes the following steps:

[0151] Step 1: providing a display function layer, which may be an OLED display function layer;

[0152] Step 2: Figure 5 As shown, a buffer layer 04 is formed on the display function layer;

[0153] The buffer layer 04 may be made of inorganic insulating materials, such as silicon nitride, silicon oxide, etc.

[0154] Step 3, depositing a metal layer on the buffer layer 04, and patterning the metal layer to form a metal wiring layer 06, wherein the metal wiring layer 06 includes a plurality of metal wirings, and the metal wirings are fingerprint recognition electrode lead-out wirings;

[0155] The metal wiring may adopt a single-layer structure or a multi-layer structure. In some embodiments, the metal wiring may adopt a stacked-layer structure of Ti / Al / Ti.

[0156] Step 4, forming an insulating layer 05 covering the metal wiring layer 06;

[0157] The insulating layer 05 may be made of an inorganic insulating material or an organic insulating material, for example, silicon nitride may be used as the insulating layer 05 .

[0158] Step 5: depositing a metal layer on the insulating layer 05, and patterning the metal layer to form a functional electrode layer 06;

[0159] The functional electrode layer 07 is in the form of a metal grid, which is periodically disconnected to form a plurality of mutually independent metal grid-shaped fingerprint recognition electrodes, and the fingerprint recognition electrodes are connected to the metal wiring through vias penetrating the insulating layer 05. The functional electrode layer 07 can adopt a single-layer structure or a multi-layer structure. In some embodiments, the functional electrode layer 07 can adopt a Ti / Al / Ti stacked structure.

[0160] Step 6: forming a transparent conductive layer 08 electrically connected to the functional electrode layer 06;

[0161] The transparent conductive layer 08 may include a transparent metal oxide conductive layer 081, a metal layer 082 and a transparent metal oxide conductive layer 083 stacked in sequence. To ensure the light transmittance of the transparent conductive layer 08, the thickness of the metal layer 082 may be 10-250 angstroms.

[0162] In some embodiments, the transparent metal oxide conductive layer may be made of ITO or IZO, with a thickness of 700 angstroms, and the metal layer 082 may be made of a metal with good conductivity, such as Ag, Ti, etc., with a thickness of 100 angstroms. In a specific example, the transparent conductive layer 08 may be a laminated structure of ITO / Ti / ITO.

[0163] Step 7: forming a passivation layer 09 covering the transparent conductive layer 08;

[0164] Step 8: coating a layer of organic insulating material, and forming a protective layer 12 after curing.

[0165] The protection layer 12 can protect the display panel.

[0166] Since the transparent conductive layer 08 has light-transmitting properties and will not affect the display of the display function layer, the area of ​​the transparent conductive layer can be designed to be relatively large. In this way, the transparent conductive layer is electrically connected to the fingerprint recognition electrode, which can indirectly increase the area of ​​the fingerprint recognition electrode and further increase the signal amount of the fingerprint recognition sensing signal. Of course, in order to avoid different fingerprint recognition electrodes being connected together through the transparent conductive layer 08, the transparent conductive layer 08 also needs to be divided into multiple independent transparent electrode blocks, such as Figure 6 As shown, each transparent electrode block 084 is electrically connected to the corresponding fingerprint identification electrode 072 .

[0167] In order to improve the resolution of fingerprint recognition, it is necessary to have enough fingerprint recognition electrodes 072, which will also result in a smaller area of ​​a single fingerprint recognition electrode 072. Figure 7 As shown, the area of ​​a single fingerprint recognition electrode 072 is only equivalent to the area of ​​one or two sub-pixels 13, which will result in a very small signal amount of the fingerprint recognition signal; in this embodiment, a transparent electrode block 084 is electrically connected to the fingerprint recognition electrode 072, which indirectly increases the area of ​​the fingerprint recognition electrode 072. In this way, even if the area of ​​a single fingerprint recognition electrode 072 is very small, the signal amount of the fingerprint recognition signal and the fingerprint recognition accuracy can be guaranteed.

[0168] In order to reduce the reflectivity of the surface of the OLED display function layer, the related technology often attaches a circular polarizer on the light-emitting side of the OLED display function layer. The circular polarizer can reduce the reflectivity of the surface of the OLED display function layer, but this will make the overall thickness of the display panel too large, which will affect the repeated folding ability of the display panel when used in the field of flexible display. In this embodiment, the thickness of the transparent metal oxide conductive layer 081, the metal layer 082 and the transparent metal oxide conductive layer 083 can be adjusted so that the transmittance of the transparent conductive layer is not more than 60%, preferably 40%-60%. In this way, the transparent conductive layer can reduce the reflectivity of the surface of the display function layer, and there is no need to attach a circular polarizer on the light-emitting side of the display function layer, which can reduce the overall thickness of the display panel, which is beneficial to improving the repeated folding ability of the display panel.

[0169] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the embodiments, since they are basically similar to the product embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the product embodiments.

[0170] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0171] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0172] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0173] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: include: Display function layer; A functional electrode layer located on one side of the display functional layer; a transparent conductive layer located on a side of the functional electrode layer away from the display functional layer and electrically connected to the functional electrode layer, wherein the transparent conductive layer comprises at least one metal layer and one transparent metal oxide conductive layer, and the thickness of the transparent metal oxide conductive layer is greater than the thickness of the metal layer; A metal wiring layer located on the light-emitting side of the display function layer, wherein the metal wiring layer includes a plurality of metal wirings; The black matrix is ​​located on a side of the transparent conductive layer away from the display function layer, and the orthographic projection of the metal wiring on the display function layer is located within the orthographic projection of the black matrix on the display function layer.

2. The display panel according to claim 1, characterized in that: The transparent conductive layer comprises a transparent metal oxide conductive layer, a metal layer and a transparent metal oxide conductive layer stacked in sequence; or The transparent conductive layer includes a transparent metal oxide conductive layer and a metal layer stacked in sequence, and the metal layer is located on a side of the transparent metal oxide conductive layer close to the display function layer.

3. The display panel according to claim 1, characterized in that: The thickness ratio of the transparent metal oxide conductive layer to the metal layer is 5-7.

4. The display panel according to claim 1, characterized in that: The thickness of the metal layer is 10-250 angstroms.

5. The display panel according to claim 1, characterized in that: Also includes: An insulating layer located on a side of the metal wiring layer away from the display function layer; The functional electrode layer is located on a side of the insulating layer away from the display functional layer, and the functional electrode layer is electrically connected to the metal wiring through a via hole penetrating the insulating layer.

6. The display panel according to claim 5, characterized in that: The functional electrode layer includes a plurality of touch electrodes and / or a plurality of fingerprint recognition electrodes.

7. The display panel according to claim 6, characterized in that: The transparent conductive layer includes a plurality of mutually independent transparent electrode blocks, the touch electrodes correspond to the transparent electrode blocks one by one, and the orthographic projection of the touch electrodes on the display function layer is located within the orthographic projection of the corresponding transparent electrode block on the display function layer.

8. The display panel according to claim 7, characterized in that: The touch control electrode is a metal grid.

9. The display panel according to claim 8, characterized in that: The display function layer includes a plurality of sub-pixels, the orthographic projection of the touch electrode on the display function layer covers at least one sub-pixel, and the orthographic projection of the metal grid on the display function layer is located between adjacent sub-pixels.

10. The display panel according to claim 7, characterized in that: The functional electrode layer includes P touch electrodes arranged in an array, the metal wiring layer includes P metal wirings, the touch electrodes are connected to the metal wirings in a one-to-one correspondence, and P is an integer greater than 1.

11. The display panel according to claim 6, characterized in that: The transparent conductive layer includes a plurality of mutually independent transparent electrode blocks, the fingerprint recognition electrodes correspond to the transparent electrode blocks one by one, and the orthographic projection of the fingerprint recognition electrode on the display function layer is located within the orthographic projection of the corresponding transparent electrode block on the display function layer.

12. The display panel according to claim 11, characterized in that: The display function layer includes a plurality of sub-pixels, and the orthographic projection of one fingerprint recognition electrode on the display function layer covers a sub-pixel or a part of a sub-pixel.

13. The display panel according to claim 11, characterized in that: The functional electrode layer includes M columns of fingerprint recognition electrodes, the metal wiring layer includes 2M metal wirings extending along the column direction, the even-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-th metal wiring, and the odd-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-1-th metal wiring, or the even-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-1-th metal wiring, and the odd-numbered fingerprint recognition electrodes in the i-th column are connected to the 2i-th metal wiring, where i is an integer greater than or equal to 1 and less than or equal to M; or The functional electrode layer includes N rows of fingerprint recognition electrodes, the metal routing layer includes 2N metal routings extending along the row direction, the even-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-th metal routing, the odd-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-1-th metal routing, or the even-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-1-th metal routing, and the odd-numbered fingerprint recognition electrodes in the j-th row are connected to the 2j-th metal routing, where j is an integer greater than or equal to 1 and less than or equal to N.

14. The display panel according to any one of claims 1 to 13, characterized in that: The transmittance of the transparent conductive layer is no more than 60%.

15. The display panel according to claim 14, characterized in that: The transmittance of the transparent conductive layer is 40%-60%.

16. The display panel according to any one of claims 1 to 13, characterized in that: Also includes: A passivation layer is located on a side of the transparent conductive layer away from the display function layer.

17. The display panel according to any one of claims 1 to 13, characterized in that: Also includes: The flat layer is located on a side of the transparent conductive layer away from the display function layer, and the refractive index of the flat layer is 1.4-1.

6.

18. The display panel according to any one of claims 1 to 13, characterized in that: Also includes: A protective layer is located on a side of the transparent conductive layer away from the display function layer.

19. A display device, characterized in that: It comprises a display panel and a driving chip as described in any one of claims 1 to 18, wherein the driving chip is connected to the functional electrode layer through a metal wiring.

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