Touch panel

Abstract

The utility model provides a touch panel, which comprises a fingerprint identification area and further comprises an array substrate, a touch panel and a touch panel, the light-emitting layer is arranged on one side of the array substrate; the packaging layer covers one side, far away from the array substrate, of the light-emitting layer; the touch control layer is arranged on the side, away from the light-emitting layer, of the packaging layer, and the touch control layer comprises a first touch control metal wire and a second touch control metal wire which are arranged on different layers; the grid adhesive layer is arranged on one side, far away from the light-emitting layer, of the array substrate and avoids the fingerprint identification area; the foam layer is arranged on one side, far away from the array substrate, of the grid adhesive layer and avoids the fingerprint identification area; the metal layer is arranged on one side, far away from the grid glue layer, of the foam layer and avoids the fingerprint identification area; the reinforcing layer is arranged in the fingerprint recognition area, and the reinforcing layer and the first touch metal wires and / or the second touch metal wires are arranged on the same layer. According to the technical scheme, the technical problem that the structural strength of the touch layer is low can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch panels, in particular to a touch panel. Background Art

[0002] In recent years, touch technology has been increasingly used in display devices of various sizes. As a new type of human-computer interaction input display panel, the touch display panel is simpler, more direct and more convenient than the traditional display, keyboard and mouse input methods. One of the requirements for the mechanical performance of the screen is that the screen needs to be tested for back pressure. During the test, since the touch layer in the panel includes an inorganic layer, its structural strength is relatively low. When the back pressure exceeds a certain value, the touch layer is very easy to break, which will cause damage to the screen structure, resulting in the appearance of black spots on the screen, which is not conducive to meeting the user's usage needs. Utility Model Content

[0003] The embodiment of the utility model provides a touch panel, which can improve the technical problem of low structural strength of the touch layer.

[0004] In a first aspect, an embodiment of the utility model provides a touch panel, the touch panel includes a fingerprint recognition area, and the touch panel also includes: an array substrate; a light-emitting layer, which is arranged on one side of the array substrate; an encapsulation layer, which covers a side of the light-emitting layer away from the array substrate; a touch layer, which is arranged on a side of the encapsulation layer away from the light-emitting layer, the touch layer includes a first touch metal trace and a second touch metal trace arranged in different layers; a reinforcement layer, which is arranged in the fingerprint recognition area, and the reinforcement layer is arranged in the same layer as the first touch metal trace and / or the second touch metal trace

[0005] In one embodiment, the reinforcement layer includes a virtual metal layer, which is disposed in the same layer as the first touch metal trace and / or the second touch metal trace, and there is a gap between the virtual metal layer and the first touch metal trace and / or the second touch metal trace of the same layer.

[0006] In one embodiment, the second touch metal routing includes a plurality of second grid lines that are arranged to cross each other, a plurality of second grid parts are formed between the plurality of second grid lines, the virtual metal layer includes a plurality of second virtual metal blocks, the second virtual metal blocks are arranged in the same layer as the second grid lines, the second virtual metal blocks are located in the second grid parts and at least some of the second virtual metal blocks are arranged in a one-to-one correspondence with the second grid parts.

[0007] In one embodiment, the first touch metal routing includes a plurality of first grid lines that are arranged to cross each other, a plurality of first grid parts are formed between the plurality of first grid lines, the virtual metal layer includes a plurality of first virtual metal blocks, the first virtual metal blocks are arranged in the same layer as the first grid lines, the first virtual metal blocks are located in the first grid parts and at least some of the first virtual metal blocks are arranged in a one-to-one correspondence with the first grid parts.

[0008] In one embodiment, the first touch metal routing includes a plurality of first grid lines that are intersected with each other, and a plurality of first grid parts are formed between the plurality of first grid lines. The second touch metal routing includes a plurality of second grid lines that are intersected with each other, and a plurality of second grid parts are formed between the plurality of second grid lines. The virtual metal layer includes a plurality of third virtual metal blocks, some of the third virtual metal blocks are arranged on the same layer as the first grid lines, and another portion of the third virtual metal blocks are arranged on the same layer as the second grid lines. The third virtual metal blocks are arranged in the first grid part and the second grid part, and at least some of the third virtual metal blocks are arranged in a one-to-one correspondence with the first grid part and the second grid part, respectively.

[0009] In one embodiment, the first touch metal routing includes a plurality of first grid lines that are arranged to cross each other, the virtual metal layer includes a plurality of third grid lines that are arranged to cross each other, the third grid lines are arranged to be spaced apart from the first grid lines and the third grid lines and the first grid lines are located in the same layer, and the projections of the third grid lines and the second touch metal routing in the thickness direction of the touch panel at least partially overlap.

[0010] In one embodiment, the touch panel also includes a pixel definition layer arranged between the array substrate and the light-emitting layer, the pixel definition layer includes a plurality of pixel openings, the light-emitting layer includes a plurality of light-emitting devices, the light-emitting devices are arranged in the pixel openings and correspond one-to-one to the pixel openings, and the projection of the virtual metal layer in the thickness direction of the touch panel avoids the pixel openings.

[0011] In one embodiment, the virtual metal layer is disposed corresponding to the center of the fingerprint identification area, and the area of ​​the virtual metal layer is S1, the area of ​​the fingerprint identification area is S2, and 4S2≤S1≤16S2.

[0012] In one embodiment, the interval is L1, the line width of the first touch metal wiring and the second touch metal wiring is L2, and 1.5L2≤L1≤3L2.

[0013] In one embodiment, the touch panel further includes: a supporting layer, which is arranged on a side of the array substrate away from the light-emitting layer; an adhesive layer, which is located on a side of the supporting layer away from the array substrate and is arranged away from the fingerprint recognition area; a foam layer, which is located on a side of the adhesive layer away from the supporting layer and is arranged away from the fingerprint recognition area; and a metal layer, which is located on a side of the foam layer away from the adhesive layer and is arranged away from the fingerprint recognition area.

[0014] By applying the technical solution of the utility model, a reinforcing layer is arranged on the same layer as the first touch metal wiring and / or the second touch metal wiring, and there is a gap between the reinforcing layer and the first touch metal wiring and / or the second touch metal wiring on the same layer. Such arrangement can not only prevent the reinforcing layer from contacting the first touch metal wiring and / or the second touch metal wiring to cause abnormal function of the touch panel, but also the reinforcing layer has a large elastic modulus and is a tough material (i.e., it is not easy to break), so that the structural rigidity of the touch layer can be enhanced, thereby helping to improve the mechanical properties of the touch layer structure and making it less likely to break. During the back pressure test of the panel, since the structural strength of the touch layer is improved, even when the back pressure test force exceeds a certain value, the touch layer can withstand the back pressure test force, so that the structure of the touch layer can be avoided from being damaged, thereby preventing the phenomenon of black spots on the screen from appearing, so as to ensure the normal progress of the back pressure test. By setting the above structure, the service life of the touch layer can be extended, which is conducive to meeting the user's usage needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a partial cross-sectional schematic diagram of a touch panel provided in the first embodiment of the utility model;

[0017] Figure 2 yes Figure 1 A plan view of a first touch metal trace and a first virtual metal block;

[0018] Figure 3 is a partial cross-sectional schematic diagram of a touch panel provided in the second embodiment of the present utility model;

[0019] Figure 4 yes Figure 3 A plan view of a second touch metal trace and a second virtual metal block;

[0020] Figure 5 is a partial cross-sectional schematic diagram of a touch panel provided in Embodiment 3 of the present utility model;

[0021] Figure 6 yes Figure 5 A plan view of a first touch metal trace, a second touch metal trace and a third virtual metal block;

[0022] Figure 7is a partial cross-sectional schematic diagram of a touch panel provided in the fourth embodiment of the present utility model;

[0023] Figure 8 yes Figure 7 A plan view of the first touch metal trace and the third grid line;

[0024] Fig. 9 It is a cross-sectional schematic diagram of an array substrate, a pixel definition layer, and a light-emitting layer provided in an embodiment of the utility model;

[0025] Fig.10 is a diagram showing the stress variation of the touch layer under back pressure in the second embodiment;

[0026] Fig.11 is a graph showing the stress variation of the touch layer under back pressure in the fourth embodiment;

[0027] Fig.12 It is a schematic structural diagram of a touch panel provided by an embodiment of the present utility model during a back pressure test.

[0028] The above drawings include the following reference numerals:

[0029] 10. array substrate; 101. substrate substrate; 102. shielding metal layer; 103. barrier layer; 104. buffer layer; 105. first active layer; 106. first gate insulating layer; 107. first gate; 108. second gate insulating layer; 109. second gate; 110. first interlayer insulating layer; 111. second active layer; 112. third gate insulating layer; 113. third gate; 114. second interlayer insulating layer; 115. first source-drain metal layer; 116. first planar layer; 117. second source-drain metal layer; 118. second planar layer; 119. pixel definition layer; 120. anode;

[0030] 20. Luminescent layer;

[0031] 30. Encapsulation layer;

[0032] 40, touch layer; 401, touch area; 402, fingerprint recognition area; 41, first touch metal wiring; 411, first grid line; 42, second touch metal wiring; 421, second grid line; 43, first touch insulating layer; 44, second touch insulating layer; 45, first grid portion; 46, second grid portion;

[0033] 50. Virtual metal layer; 51. First virtual metal block; 52. Second virtual metal block; 53. Third virtual metal block; 54. Third grid line; 60. Adhesive layer; 70. Organic encapsulation layer; 80. Inorganic encapsulation layer; 90. Polarizing layer; 100. Cover plate; 130. Support layer; 140. Adhesive layer; 150. Foam layer; 160. Metal layer; 170. Test element. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] like Figures 1 to 9 As shown, in the first aspect, an embodiment of the utility model provides a touch panel, which includes: an array substrate 10; a light-emitting layer 20, which is arranged on one side of the array substrate 10; an encapsulation layer 30, which covers the side of the light-emitting layer 20 away from the array substrate 10; a touch layer 40, which is arranged on the side of the encapsulation layer 30 away from the light-emitting layer 20, the touch layer 40 includes a first touch metal trace 41 and a second touch metal trace 42 arranged in different layers, and the touch layer 40 also includes a touch area 401 and a fingerprint recognition area 402; a reinforcement layer, which is arranged in the fingerprint recognition area 402, and the reinforcement layer is arranged in the same layer as the first touch metal trace and / or the second touch metal trace.

[0036] The material of the reinforcement layer can be a metal material or a non-metal material, as long as it can meet the structural strength requirements of the device.

[0037] By applying the technical solution of the utility model, a reinforcing layer is provided on the same layer as the first touch metal wiring 41 and / or the second touch metal wiring 42, and there is a gap between the reinforcing layer and the first touch metal wiring 41 and / or the second touch metal wiring 42 on the same layer. Such a configuration can not only prevent the reinforcing layer from contacting the first touch metal wiring 41 and / or the second touch metal wiring 42 to cause abnormal function of the touch panel, but also the reinforcing layer has a large elastic modulus and is a tough material (i.e., it is not easy to break), so that the structural rigidity of the touch layer 40 can be enhanced, thereby helping to improve the mechanical properties of the structure of the touch layer 40 and making it less likely to break. During the back pressure test of the panel, since the structural strength of the touch layer 40 is improved, even when the back pressure test force exceeds a certain value, the touch layer 40 can withstand the back pressure test force, so that the structure of the touch layer 40 can be avoided from being damaged, thereby preventing the phenomenon of black spots on the screen from appearing, so as to ensure the normal conduct of the back pressure test. By providing the above structure, the service life of the touch layer 40 can be extended, which is conducive to meeting the use needs of users.

[0038] Specifically, the reinforcement layer includes a virtual metal layer 50, which is disposed on the same layer as the first touch metal trace 41 and / or the second touch metal trace 42, and there is a gap between the virtual metal layer 50 and the first touch metal trace 41 and / or the second touch metal trace 42 on the same layer.

[0039] In the present application, the touch layer 40 includes a first touch insulating layer 43, a first touch metal trace 41, a second touch insulating layer 44, and a second touch metal trace 42. The first touch insulating layer 43 and the second touch insulating layer 44 are used to achieve the effect of spacing the first touch metal trace 41 and the second touch metal trace 42 to avoid line crosstalk. An adhesive layer 60 is also provided on the second touch metal trace 42.

[0040] The touch layer 40 can cooperate with the display layer to realize the touch sensing, detection and screen display functions of the touch screen, and further realize the functions of the electronic device receiving external input commands or outputting feedback information to the outside world, so as to form a human-computer interaction effect between the electronic device and the user (that is, the operator of the electronic device).

[0041] For example, in one implementation, the display layer can be used to display an operation interface, and the user can touch the touch layer 40 by means of a finger, a stylus, etc., thereby causing an electrical signal change inside the touch layer 40 to achieve the effects of selecting displayed instructions, controlling the operation interface, etc. Among them, the touch screen can be a self-capacitive touch screen, a mutual-capacitive touch screen, or a touch screen of other structures. In the implementation of the present application, the touch screen is an example of a mutual-capacitive touch screen for exemplary introduction, but the structure of the touch screen in the electronic device of the present application is not limited to this. In other embodiments of the present application, the touch screen can also be other touch screens that can achieve touch sensing and detection effects. At the same time, the setting position of the touch screen in the electronic device can also be adjusted according to actual design requirements. Only one possible implementation is used as an example for exemplary introduction, and the touch screen is not limited to the implementation shown in the figure.

[0042] Taking the touch screen as a mutual capacitance touch structure as an example, the working principle of the touch layer 40 in the electronic device of the present application is exemplarily introduced. In the present application, the first touch metal trace 41 includes a sensing electrode connection line, and the second touch metal trace 42 includes a plurality of touch drive electrodes Tx and a plurality of touch sensing electrodes Rx extending in different directions, respectively, and the plurality of touch drive electrodes Tx and the plurality of touch sensing electrodes Rx are arranged in an interlaced manner. For example, in one implementation, the touch drive electrodes Tx can be connected in sequence in the longitudinal direction, and the touch sensing electrodes Rx can be connected in sequence in the transverse direction. Among them, each touch drive electrode Tx and each touch sensing electrode Rx are connected to the touch drive circuit, and each touch drive electrode Tx is applied with a touch drive signal, and generates an electric field line E that can be received by the touch sensing electrode Rx, so as to form a coupling capacitor between any touch drive electrode Tx and a touch sensing electrode Rx adjacent thereto.

[0043] It can be understood that a touch driving electrode Tx and a touch sensing electrode Rx that form a coupling capacitor are respectively constructed as the two poles of the coupling capacitor. When a human finger touches the touch screen, the value of the coupling capacitance between the two electrodes near the touch point will change, that is, the capacitance between the two electrodes will change, so that the sensing signal received by the touch sensing electrode Rx will change, such as the electric field lines received by the touch sensing electrode Rx will be reduced. The touch driving circuit obtains the value of each coupling capacitor based on the touch sensing electrode Rx, and calculates the position of the touch point based on the detected coupling capacitance value change data, thereby forming the touch sensing and detection function of the touch screen.

[0044] In other implementations, the effect of changing the coupling capacitance value may also be achieved through other conductors, such as a stylus pen.

[0045] Embodiment 1: Figure 1 and Figure 2 As shown, the first touch metal trace 41 includes a plurality of first grid lines 411 arranged crosswise with each other, a plurality of first grid parts 45 are formed between the plurality of first grid lines 411, and the virtual metal layer 50 includes a plurality of first virtual metal blocks 51, the first virtual metal blocks 51 are arranged in the same layer as the first grid lines 411, and the first virtual metal blocks 51 are located in the first grid parts 45 and are arranged one-to-one with the first grid parts 45. In this arrangement, since the virtual metal layer 50 has a large elastic modulus and is a tough material (i.e., not prone to fracture), the structural rigidity of the touch layer 40 can be enhanced, thus helping to improve the mechanical properties of the structure of the touch layer 40, making it less prone to fracture, thereby extending the service life of the touch layer 40 and helping to meet the user's usage requirements.

[0046] Embodiment 2: Figure 3 and Figure 4As shown, the second touch metal trace 42 includes a plurality of second grid lines 421 arranged crosswise with each other, a plurality of second grid parts 46 are formed between the plurality of second grid lines 421, and the virtual metal layer 50 includes a plurality of second virtual metal blocks 52, the second virtual metal blocks 52 are arranged in the same layer as the second grid lines 421, and the second virtual metal blocks 52 are located in the second grid parts 46 and are arranged one-to-one with the second grid parts 45. The virtual metal layer 50 has a large elastic modulus and is a tough material (i.e., it is not easy to break), so that the structural rigidity of the touch layer 40 can be enhanced, thereby helping to improve the mechanical properties of the structure of the touch layer 40, making it not easy to break, thereby extending the service life of the touch layer 40, and being conducive to meeting the use needs of users.

[0047] Embodiment 3: Figure 5 and Figure 6 As shown, the first touch metal trace 41 includes a plurality of first grid lines 411 intersecting each other, and a plurality of first grid parts 45 are formed between the plurality of first grid lines 411. The second touch metal trace 42 includes a plurality of second grid lines 421 intersecting each other, and a plurality of second grid parts 46 are formed between the plurality of second grid lines 421. The virtual metal layer 50 includes a plurality of third virtual metal blocks 53, some of the third virtual metal blocks 53 are arranged in the same layer as the first grid lines 411, and another portion of the third virtual metal blocks 53 are arranged in the same layer as the second grid lines 421. The third virtual metal blocks 53 are arranged in the first grid part 45 and the second grid part 46, and the third virtual metal blocks 53 are arranged in a one-to-one correspondence with the first grid part 45 and the second grid part 46. The virtual metal layer 50 has a large elastic modulus and is a tough material (i.e., it is not easy to break), so that the structural rigidity of the touch layer 40 can be enhanced, thereby helping to improve the mechanical properties of the touch layer 40 structure, making it not easy to break, thereby extending the service life of the touch layer 40, and helping to meet the user's usage requirements.

[0048] Embodiment 4: Figure 7 and Figure 8 As shown, the first touch metal trace 41 includes a plurality of first grid lines 411 intersecting each other, and the virtual metal layer 50 includes a plurality of third grid lines 54 intersecting each other, and the third grid lines 54 are spaced apart from the first grid lines 411. The virtual metal layer 50 has a large elastic modulus and is a tough material (i.e., not prone to fracture), which can enhance the structural rigidity of the touch layer 40, thereby helping to improve the mechanical properties of the touch layer 40 structure, making it less prone to fracture, thereby extending the service life of the touch layer 40 and helping to meet the user's usage needs.

[0049] Specifically, the projection of the third grid line 54 and the second touch metal trace 42 in the thickness direction of the touch panel at least partially overlaps. This arrangement can minimize the shielding and absorption of light by the virtual metal layer 50, thereby minimizing the impact on the optical performance of the panel.

[0050] like Fig.10 As shown in FIG. 1 , this figure is a diagram showing stress variation of the touch layer 40 under back pressure in the second embodiment.

[0051] like Fig.11 As shown, this figure is a diagram showing the stress variation of the touch layer 40 under back pressure in the fourth embodiment.

[0052] Furthermore, the touch panel further includes a pixel definition layer 119 disposed between the array substrate 10 and the light emitting layer 20, the pixel definition layer 119 includes a plurality of pixel openings, the light emitting layer 20 includes a plurality of light emitting devices, the light emitting devices are disposed in the pixel openings and correspond to the pixel openings one by one, and the projection of the virtual metal layer 50 in the thickness direction of the touch panel avoids the pixel openings. This arrangement can minimize the shielding and absorption of light by the virtual metal layer 50, thereby minimizing the impact on the optical performance of the panel.

[0053] In the above embodiments, the virtual metals provided in embodiments 1 to 3 are obviously more than those in embodiment 4, so embodiments 1 to 4 have better mechanical improvement effects on the touch layer 40. However, the structures of embodiments 1 to 3 will affect the light emitting performance (i.e., the virtual metal will absorb part of the light emitting). In embodiment 4, since the third grid lines 54 and the second touch metal traces 42 at least partially overlap in the light emitting direction, the effect on the light emitting performance will be smaller than that of embodiments 1 to 3. In general, if only the overall mechanical properties of the touch layer 40 are considered, embodiments 1 to 3 are preferred, and if the optical properties are taken into consideration at the same time, it is recommended to select embodiment 4.

[0054] Specifically, the virtual metal layer 50 is arranged corresponding to the center of the fingerprint recognition area 402, and the area of ​​the virtual metal layer 50 is S1, the area of ​​the fingerprint recognition area 402 is S2, and 4S2≤S1≤16S2. This arrangement can improve the structural strength of the touch layer 40 as much as possible to extend its service life. Optionally, S1 can be set to values ​​such as 4S2, 10S2, 16S2, etc. The specific setting should be selected according to the use environment of the device, so as to improve the applicability and scope of application of the device.

[0055] Furthermore, the interval is L1, the line width of the first touch metal trace 41 and the second touch metal trace 42 is L2, and 1.5L2≤L1≤3L2. This setting can prevent the virtual metal from contacting the first touch metal trace 41 and the second touch metal trace 42, thereby ensuring the stability of the panel during operation. Optionally, L1 can be set to values ​​such as 1.5L2, 2L2, and 3L2. The specific setting should be selected according to the use environment of the device, so as to improve the applicability and scope of application of the device.

[0056] like Fig. 9 As shown, illustratively, regarding the array substrate 10 provided by the present disclosure and other film layer structures located on the array substrate 10, a specific description is given here. The array substrate 10 includes a substrate, a shielding metal layer 102, a barrier layer 103, a buffer layer 104, a driving circuit layer, an anode 120, etc., which are stacked. The substrate can be a flexible substrate made of materials such as polyimide (PI), polyethylene naphthalate (PEN), and thermoplastic polyester (PET), or a rigid substrate made of materials such as glass and quartz. The barrier layer 103 and the buffer layer 104 can be formed on the entire surface of the substrate. For example, the barrier layer 103 can be made of inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride, and the buffer layer 104 can also be made of inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride. The barrier layer 103 is beneficial to blocking water and oxygen from entering the film layer formed later from the bottom. The buffer layer 104 is beneficial to the quality of subsequent material deposition.

[0057] The driving circuit layer may also be referred to as a thin film transistor (TFT) layer. In the present application, the thin film transistor (TFT) layer includes first transistors and second transistors of different types. The material of the first transistor is polysilicon, and the material of the second transistor is IGZO.

[0058] The thin film transistor layer also includes a first active layer 105 formed on the buffer layer 104 by a patterning process, a first gate insulating layer 106 formed on the first active layer 105 by deposition or the like, a first gate 107 of the thin film transistor formed on the first gate insulating layer by a patterning process, a second gate insulating layer 108 formed on the first gate 107 by deposition or the like, a second gate 109 of the thin film transistor formed on the second gate insulating layer by a patterning process, a first interlayer insulating layer 110 formed on the second gate 109 by deposition or the like, a second active layer 111 formed on the first interlayer insulating layer 110, and a second gate 109 formed on the second active layer 111 by a patterning process. A third gate insulating layer 112 is formed by deposition or the like, a third gate 113 of a thin film transistor is formed on the third gate insulating layer by a patterning process, a second interlayer insulating layer 114 is formed on the third gate 113 by deposition or the like, a first source-drain metal layer 115 is formed on the second interlayer insulating layer 114, and a first flat layer 116 covering the first source-drain metal layer 115 and the exposed second interlayer insulating layer 114 is formed, a second source-drain metal layer 117 is formed on the first flat layer 116, and a second flat layer 118 covering the second source-drain metal layer 117 and the exposed first flat layer 116 is formed, and the first source-drain metal layer 115 forms the source and drain of the thin film transistor.

[0059] The first gate insulating layer 106, the second gate insulating layer 108 and the third gate insulating layer 112 can be made of inorganic insulating materials such as silicon oxide, silicon nitride or silicon oxynitride, and the first interlayer insulating layer 110 and the second interlayer insulating layer 114 can be made of inorganic insulating materials such as silicon oxide, silicon nitride or silicon oxynitride. The first gate 107, the second gate 109 and the third gate 113 can be formed of one or more alloys formed by any combination of one or more metals selected from molybdenum (Mo), copper (Cu), aluminum (Al), titanium (Ti) or other suitable materials. In addition, the first gate 107, the second gate 109 and the third gate 113 can also be a single layer or multilayer structure. The first flat layer 116 and the second flat layer 118 are, for example, organic materials. The anode 120 is, for example, a metal oxide such as ITO, IZO or a metal such as Ag, Al, Mo or its alloy material, and the anode 120 is, for example, electrically connected to the drain through a via hole opened in the second flat layer 118.

[0060] The pixel definition layer 119 may be formed by a patterning process and surrounds the anode 120 . Exemplarily, the material of the pixel definition layer 119 may include organic insulating materials such as negative photoresist, polyimide, and epoxy resin.

[0061] The light-emitting layer 20 includes a light-emitting material layer (EML), and the light-emitting layers 20 of different color sub-pixels are different. For example, the red sub-pixel includes a red light-emitting layer 20, the green sub-pixel includes a green light-emitting layer 20, and the blue sub-pixel includes a blue light-emitting layer 20. The light-emitting layer 20 may also include an auxiliary light-emitting layer 20 that helps the light-emitting layer 20 emit light. The auxiliary light-emitting layer 20 includes, for example, a hole injection layer (HIL), a hole transport layer (HTL), an electron blocking layer 103 (EIL), a hole blocking layer 103 (HBL), an electron transport layer (ETL), and an electron injection layer (EIL) One or more film layers. The light-emitting layer 20 and the auxiliary light-emitting layer 20 are, for example, organic material layers.

[0062] The electron transport layer may include a material capable of transporting electrons. The electron transport layer may be intrinsic (undoped) or doped, and doping may be used to enhance conductivity. This embodiment does not limit the material of the electron transport layer. The electron injection layer may include a material capable of injecting electrons. In some embodiments, the material of the electron injection layer may include sodium fluoride (NaF), or the material of the electron injection layer may include an n-type doped electron transport layer material.

[0063] The touch panel also includes a cathode, which covers the light-emitting layer 20 and the pixel definition layer 119. The material of the cathode may include metals such as Mg, Ca, Li or Al or their alloys, or metal oxides such as IZO and ZTO, or organic materials with conductive properties such as PEDOT / PSS.

[0064] The encapsulation layer 30 (TFE) is located on the cathode. For example, the encapsulation layer 30 includes a first inorganic encapsulation layer 30, an organic encapsulation layer 30 and a second inorganic encapsulation layer 30. For example, the first inorganic encapsulation layer 30 and the second inorganic encapsulation layer 30 are formed by deposition or the like. The organic encapsulation layer 30 is formed by inkjet printing. For example, the first inorganic encapsulation layer 30 and the second inorganic encapsulation layer 30 can be formed by inorganic materials such as silicon nitride, silicon oxide, and silicon oxynitride, and the organic encapsulation layer 30 can be formed by organic materials such as polyimide (PI) and epoxy resin. Thus, the first inorganic encapsulation layer 30, the organic encapsulation layer 30 and the second inorganic encapsulation layer 30 are formed into a composite encapsulation layer 30, which can form multiple protections for the functional structure of the display panel and has a better encapsulation effect.

[0065] Furthermore, the touch surface also includes an organic encapsulation layer 70 and an inorganic encapsulation layer 80 stacked between the pixel definition layer 119 and the touch layer 40 , a polarizing layer 90 is arranged between the touch layer 40 and the adhesive layer 60 , and a cover plate 100 is arranged on the side of the adhesive layer 60 away from the polarizing layer 90 .

[0066] Specifically, the touch panel further includes: a support layer 130, which is disposed on a side of the array substrate 10 away from the light emitting layer 20; an adhesive layer 140, which is located on a side of the support layer 130 away from the array substrate 10 and is disposed away from the fingerprint identification area 402; a foam layer 150, which is located on a side of the adhesive layer 140 away from the support layer 130 and is disposed away from the fingerprint identification area 402; and a metal layer 160, which is located on a side of the foam layer 150 away from the adhesive layer 140 and is disposed away from the fingerprint identification area 402. This arrangement facilitates the arrangement of a photosensitive element below the support layer to meet the fingerprint identification requirements of the device.

[0067] Among them, the support layer 130 is used to provide rigid support to the display panel to prevent the display panel from being damaged in subsequent processes due to lack of rigidity. The support layer 130 can be a single-layer structure or a laminated structure. The support layer 130 is a continuous and uninterrupted structure, that is, the support layer 130 is not provided with a through hole that runs through the entire support layer 130, so that the support layer 130 has no hollowed-out area, and the material of the support layer 130 is a light-transmitting material with a light transmittance greater than or equal to 90%, for example, the material of the support layer 130 is acrylic. Since the support layer 130 is not perforated, the risk of the "gourd screen" phenomenon can be reduced. The material example of the adhesive layer 140 is mesh glue (Embo), the foam layer 150 has the function of shading and buffering, and the material example of the foam layer 150 is foam, and the metal layer 160 has the function of heat dissipation, and the material example of the metal layer 160 is copper foil.

[0068] like Fig.12 As shown, in the second aspect, an embodiment of the present utility model provides a display device, the display device includes the above-mentioned touch panel, and the figure is a schematic diagram of the touch panel under the back pressure test, and the figure has a test element 170 。

[0069] By applying the technical solution of the utility model, a virtual metal layer 50 is arranged on the same layer of the first touch metal wiring 41 and / or the second touch metal wiring 42, and there is a gap between the virtual metal layer 50 and the first touch metal wiring 41 and / or the second touch metal wiring 42 on the same layer. Such arrangement can not only prevent the virtual metal layer 50 from contacting the first touch metal wiring 41 and / or the second touch metal wiring 42 to cause abnormal function of the touch panel, but also the virtual metal layer 50 has a large elastic modulus and is a tough material (i.e., it is not easy to break), so it can increase The structural rigidity of the strong touch layer 40 is thus helpful to improve the mechanical properties of the touch layer 40 structure, making it less likely to break. During the back pressure test of the panel, since the structural strength of the touch layer 40 is improved, even when the back pressure test force exceeds a certain value, the touch layer 40 can withstand the back pressure test force. This can avoid damage to the structure of the touch layer 40, thereby preventing the appearance of black spots on the screen to ensure the normal conduct of the back pressure test. By setting the above structure, the service life of the touch layer 40 can be extended, which is beneficial to meeting the user's usage needs.

[0070] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0071] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0072] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0073] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0074] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0075] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A touch panel, characterized in that: The touch panel includes a fingerprint recognition area, and the touch panel also includes: An array substrate; A light emitting layer is arranged on one side of the array substrate; An encapsulation layer, covering a side of the light-emitting layer away from the array substrate; A touch layer is arranged on a side of the encapsulation layer away from the light-emitting layer, and the touch layer includes a first touch metal wiring and a second touch metal wiring arranged in different layers; A reinforcement layer is arranged in the fingerprint recognition area, and the reinforcement layer is arranged in the same layer as the first touch metal wiring and / or the second touch metal wiring.

2. The touch panel according to claim 1, characterized in that: The reinforcement layer includes a virtual metal layer, which is disposed in the same layer as the first touch metal wiring and / or the second touch metal wiring, and there is a gap between the virtual metal layer and the first touch metal wiring and / or the second touch metal wiring in the same layer.

3. The touch panel according to claim 2, characterized in that: The second touch metal routing includes a plurality of second grid lines that are arranged to cross each other, and a plurality of second grid parts are formed between the plurality of second grid lines. The virtual metal layer includes a plurality of second virtual metal blocks, and the second virtual metal blocks are arranged in the same layer as the second grid lines. The second virtual metal blocks are located in the second grid parts, and at least part of the second virtual metal blocks are arranged in a one-to-one correspondence with the second grid parts.

4. The touch panel according to claim 2, characterized in that: The first touch metal routing includes a plurality of first grid lines that are arranged to cross each other, and a plurality of first grid parts are formed between the plurality of first grid lines. The virtual metal layer includes a plurality of first virtual metal blocks, and the first virtual metal blocks are arranged in the same layer as the first grid lines. The first virtual metal blocks are located in the first grid parts, and at least some of the first virtual metal blocks are arranged in a one-to-one correspondence with the first grid parts.

5. The touch panel according to claim 2, characterized in that: The first touch metal routing includes a plurality of first grid lines that are arranged to cross each other, and a plurality of first grid parts are formed between the plurality of first grid lines. The second touch metal routing includes a plurality of second grid lines that are arranged to cross each other, and a plurality of second grid parts are formed between the plurality of second grid lines. The virtual metal layer includes a plurality of third virtual metal blocks, some of the third virtual metal blocks are arranged in the same layer as the first grid lines, and another part of the third virtual metal blocks are arranged in the same layer as the second grid lines. The third virtual metal blocks are arranged in the first grid part and the second grid part, and at least some of the third virtual metal blocks are arranged in a one-to-one correspondence with the first grid part and the second grid part, respectively.

6. The touch panel according to claim 2, characterized in that: The first touch metal routing includes a plurality of first grid lines that are arranged to cross each other, the virtual metal layer includes a plurality of third grid lines that are arranged to cross each other, the third grid lines are arranged to be spaced apart from the first grid lines and the third grid lines and the first grid lines are located in the same layer, and the projections of the third grid lines and the second touch metal routing in the thickness direction of the touch panel at least partially overlap.

7. The touch panel according to any one of claims 3 to 6, characterized in that: The touch panel also includes a pixel definition layer arranged between the array substrate and the light-emitting layer, the pixel definition layer includes a plurality of pixel openings, the light-emitting layer includes a plurality of light-emitting devices, the light-emitting devices are arranged in the pixel openings and correspond one-to-one to the pixel openings, and the projection of the virtual metal layer in the thickness direction of the touch panel avoids the pixel openings.

8. The touch panel according to claim 2, characterized in that: The virtual metal layer is arranged corresponding to the center of the fingerprint identification area, and the area of ​​the virtual metal layer is S1, the area of ​​the fingerprint identification area is S2, and 4S2≤S1≤16S2.

9. The touch panel according to claim 2, characterized in that: The interval is L1, the line width of the first touch metal wiring and the second touch metal wiring is L2, and 1.5L2≤L1≤3L2.

10. The touch panel according to claim 1, characterized in that: The touch panel also includes: A supporting layer, arranged on a side of the array substrate away from the light-emitting layer; An adhesive layer is located on a side of the support layer away from the array substrate and is arranged away from the fingerprint recognition area; A foam layer, located on a side of the adhesive layer away from the support layer and away from the fingerprint recognition area; The metal layer is located on a side of the foam layer away from the bonding layer and away from the fingerprint recognition area.

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