Touch panel and touch device

Abstract

The present application relates to the technical field of display, and discloses a touch panel and a touch device. The touch panel comprises a display substrate, a touch layer, a first protective layer, and a second protective layer. A touch signal line and a touch interface pattern in the touch layer are connected by means of a first transfer pattern in the display substrate. The first protective layer and the second protective layer are both located on the side of a second touch wiring layer of the touch layer away from a base substrate. A touch electrode line and a touch signal line in the second touch wiring layer can be protected by the first protective layer. A touch interface pattern in the second touch wiring layer can be protected by the second protective layer. In this way, the touch electrode line, the touch signal line, and the touch interface pattern can be prevented from being exposed, thereby avoiding the corrosion of water vapor or acid and alkali on the touch electrode line, the touch signal line, and the touch interface pattern, and thus ensuring the yield of the touch panel.

Description

Touch panel and touch device TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a touch panel and a touch device. BACKGROUND

[0002] In order to make the display panel lighter and thinner to adapt to folding and curling products, a touch panel integrated with touch and display is born by using FMLOC (flexible multi-layer on cell) technology.

[0003] SUMMARY

[0004] The present application provides a touch panel and a touch device, and the technical solution is as follows:

[0005] In one aspect, a touch panel is provided, comprising: a display substrate, a touch layer, a first protective layer and a second protective layer; the display substrate comprises:

[0006] a substrate substrate having a display area and a peripheral area surrounding the display area, the peripheral area comprising a first transition area disposed away from the display area, a bending area and a binding area;

[0007] and a first conductive layer located on one side of the substrate substrate, the first conductive layer comprising a first adapter pattern located in the bending area;

[0008] The touch layer comprises: a first touch trace layer, a touch insulating layer and a second touch trace layer stacked in turn away from one side of the display substrate; the orthographic projection of the second touch trace layer on the substrate substrate is located in the display area and the peripheral area; the first touch trace layer and the second touch trace layer comprise touch electrode lines located in the display area, touch signal lines located in the first transition area and at least touch interface patterns located in the binding area, the touch interface patterns are respectively connected with the first adapter pattern and the driving circuit in the touch panel, the touch interface patterns are used for receiving touch signals from the driving circuit;

[0009] The first protective layer and the second protective layer are both located on the side of the second touch trace layer away from the substrate substrate, the orthographic projection of the first protective layer on the substrate substrate covers the orthographic projection of the touch electrode lines and the touch signal lines on the substrate substrate; the orthographic projection of the second protective layer on the substrate substrate covers the orthographic projection of the touch interface pattern on the substrate substrate.

[0010] Optionally, the display substrate further comprises a plurality of light emitting units located in the display area, the light emitting units being configured to emit light; the touch panel further comprises a color film layer located on a side of the touch layer away from the display substrate, the color film layer comprising:

[0011] a black matrix located in the display area and the first transition area, the black matrix located in a portion of the display area having a plurality of openings corresponding to the plurality of light emitting units;

[0012] and a plurality of light filtering portions located in the openings, the light emitted by the light emitting units being emitted after passing through the light filtering portions.

[0013] Optionally, the second protective layer comprises a first protective portion prepared by the same patterning process as the light filtering portions; or,

[0014] the second protective layer comprises a first protective portion prepared by the same patterning process as the black matrix.

[0015] Optionally, the plurality of light emitting units comprises first light emitting units, second light emitting units and third light emitting units, the light emitted by the first light emitting units, the second light emitting units and the third light emitting units being of different colors;

[0016] the plurality of light filtering portions comprises first light filtering portions corresponding to the first light emitting units, second light filtering portions corresponding to the second light emitting units, and third light filtering portions corresponding to the third light emitting units;

[0017] wherein the first protective portion of the second protective layer and the first light filtering portions are prepared by the same patterning process.

[0018] Optionally, the color of the light emitted by the first light emitting units is red, the color of the light emitted by the second light emitting units is green, and the color of the light emitted by the third light emitting units is blue.

[0019] the first light filtering portions are red light filtering portions, the second light filtering portions are green light filtering portions, and the third light filtering portions are blue light filtering portions.

[0020] Optionally, the peripheral area further comprises a second transition area located between the bending area and the binding area; the touch interface pattern comprises a lapping portion and a non-lapping portion, the lapping portion being located in the binding area, and the non-lapping portion being located in the second transition area, the lapping portion being configured to be connected to the driving circuit;

[0021] the second protective layer further comprises an anisotropic conductive film, the anisotropic conductive film covering the lapping portion, and the first protective portion covering the non-lapping portion.

[0022] Optionally, the first protective layer comprises a second protective portion prepared by the same patterning process as the filter portion.

[0023] A normal projection of the second protective portion on the substrate substrate covers a normal projection of the touch signal line on the substrate substrate.

[0024] Optionally, the first protective layer comprises a third protective portion, and the third protective portion and the black matrix are an integral structure.

[0025] A normal projection of the third protective portion on the substrate substrate covers a normal projection of the touch signal line on the substrate substrate.

[0026] Optionally, the first protective layer further comprises a first protective glue located in the display area and the first transition area, and a second protective glue located in the bending area.

[0027] The first protective glue is a solid optical glue, and the second protective glue is a modified cyclic olefin glue.

[0028] Optionally, the first protective layer comprises a second protective portion prepared by the same patterning process as the filter portion, and a normal projection of the second protective portion on the substrate substrate covers a normal projection of the touch signal line on the substrate substrate; or the first protective layer comprises a third protective portion, and the third protective portion and the black matrix are an integral structure, and a normal projection of the third protective portion on the substrate substrate covers a normal projection of the touch signal line on the substrate substrate.

[0029] The first protective layer further comprises a first protective glue located in the display area and the first transition area, and a second protective glue located in the bending area; the first protective glue is a solid optical glue, and the second protective glue is a modified cyclic olefin glue.

[0030] Optionally, the display substrate further comprises a first conductive insulating layer located on a side of the first conductive layer away from the substrate substrate.

[0031] The first switching pattern is connected to the touch signal line through a via hole in the first conductive insulating layer and the touch insulating layer, and the first switching pattern is further connected to the touch interface pattern through another via hole in the first conductive insulating layer and the touch insulating layer.

[0032] Optionally, the first protective layer comprises a first protective glue located in the display area and the first transition area, and a second protective glue located in the bending area.

[0033] The first protective glue is a liquid optical glue, and the second protective glue is a modified cyclo-olefin glue.

[0034] Optionally, the first protective layer comprises a liquid optical glue located in the display area, the first transition area, and the bending area.

[0035] Optionally, the touch panel further comprises a polarizing layer located on a side of the touch layer away from the display substrate, and the polarizing layer is located in the display area and the first transition area.

[0036] The first protective layer comprises a pressure-sensitive adhesive located between the polarizing layer and the touch layer, and the pressure-sensitive adhesive is located in the display area and the first transition area.

[0037] The first protective layer further comprises a modified cyclo-olefin glue located in the bending area, and a projection of the modified cyclo-olefin glue on the substrate substrate and a projection of the pressure-sensitive adhesive on the substrate substrate partially overlap.

[0038] Optionally, the display substrate further comprises a first conductive insulating layer located on a side of the first conductive layer away from the substrate substrate.

[0039] The first touch wiring layer comprises a second transfer pattern located in the second transition area, the first transfer pattern is connected to the touch signal line through a via in the first conductive insulating layer and the touch insulating layer, and the first transfer pattern is further connected to the second transfer pattern through a via in the first conductive insulating layer, and the second transfer pattern is in contact with the touch interface pattern.

[0040] Optionally, the display substrate further comprises a first conductive insulating layer, a second conductive layer, and a second conductive insulating layer located on a side of the first conductive layer away from the substrate substrate.

[0041] The second conductive layer comprises a third transfer pattern located in the second transition area, the first transfer pattern is connected to the touch signal line through a via in the first conductive insulating layer, the second conductive insulating layer, and the touch insulating layer, and the first transfer pattern is further connected to the third transfer pattern through a via in the first conductive insulating layer, and the third transfer pattern is connected to the touch interface pattern.

[0042] Optionally, the display substrate comprises a light-emitting circuit layer, a light-emitting unit layer, and an encapsulation layer stacked in a direction away from the substrate substrate.

[0043] The light-emitting circuit layer comprises an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source-drain layer, a first planar layer, a second source-drain layer and a second planar layer which are stacked in a direction away from the substrate;

[0044] The light-emitting unit layer comprises an anode layer, a pixel defining layer, a light-emitting layer and a cathode layer which are stacked in a direction away from the substrate;

[0045] The encapsulation layer comprises a first sub-encapsulation layer, a second sub-encapsulation layer and a third sub-encapsulation layer which are stacked in a direction away from the substrate;

[0046] The second source-drain layer is the first conductive layer.

[0047] Optionally, the display substrate comprises a plurality of pixel units in the display area, the pixel units comprising light-emitting circuits and light-emitting units, the light-emitting circuit layer comprising the light-emitting circuits of the plurality of pixel units, the light-emitting circuits comprising a plurality of thin film transistors and at least one storage capacitor, and the light-emitting unit layer comprising the light-emitting units of the plurality of pixel units;

[0048] The active layer comprises an active pattern of the plurality of thin film transistors, the active pattern comprising a source region and a drain region;

[0049] The first gate layer comprises a gate pattern of the plurality of thin film transistors and a first capacitor plate of the at least one storage capacitor, a normal projection of the gate pattern on the substrate and a normal projection of the active pattern on the substrate at least partially overlap;

[0050] The second gate layer comprises a second capacitor plate of the at least one storage capacitor, a normal projection of the second capacitor plate on the substrate and a normal projection of the first capacitor plate on the substrate at least partially overlap;

[0051] The first source-drain layer comprises a source and a drain of the plurality of thin film transistors, the source is connected to the source region of the active pattern through a via hole in the interlayer dielectric layer, the second gate insulating layer and the first gate insulating layer, and the drain is connected to the drain region of the active pattern through a via hole in the interlayer dielectric layer, the second gate insulating layer and the first gate insulating layer;

[0052] The second source-drain layer comprises a first connecting portion in the display area and the first transition pattern in the bending area, the first connecting portion is connected to the drain through a via hole in the first planar layer;

[0053] The anode layer includes a plurality of anode patterns of the plurality of light emitting units, the anode patterns being connected through the via of the second planar layer and the first connecting part;

[0054] The pixel defining layer includes a plurality of hollow regions, the hollow regions exposing at least part of the anode patterns;

[0055] The light emitting layer includes a plurality of light emitting patterns of the plurality of light emitting units, the light emitting patterns being connected through the hollow regions and the anode patterns;

[0056] The cathode layer covers the orthographic projection of the plurality of light emitting patterns on the substrate in orthographic projection on the substrate, and the cathode layer and the light emitting patterns of the plurality of light emitting units are connected.

[0057] Optionally, the light emitting circuit layer further includes: a third source-drain layer and a third planar layer located on the side of the second planar layer away from the substrate;

[0058] The third source-drain layer includes a second connecting part located in the display area, the second connecting part being connected through the via of the second planar layer and the first connecting part; the anode patterns being connected through the via of the third planar layer and the second connecting part;

[0059] The third source-drain layer is a second conductive layer included in the touch panel.

[0060] In another aspect, a touch device is provided, including a power supply component and a touch panel as described in the above aspect.

[0061] The power supply component and the touch panel are connected, and the power supply component is configured to supply power to the touch panel. BRIEF DESCRIPTION OF DRAWINGS

[0062] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0063] FIG. 1 is a partial cross-sectional view of a touch panel in the related art;

[0064] FIG. 2 is a partial cross-sectional view of a touch panel according to an embodiment of the present application;

[0065] FIG. 3 is a top view of a touch panel according to an embodiment of the present application;

[0066] FIG. 4 is a top view of another touch panel according to an embodiment of the present application;

[0067] FIG. 5 is a partial cross-sectional view of a touch layer according to an embodiment of the present application;

[0068] FIG. 6 is a partial cross-sectional view of another touch panel according to an embodiment of the present application;

[0069] FIG. 7 is a partial top view of a touch panel according to an embodiment of the present application;

[0070] FIG. 8 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0071] FIG. 9 is a partial top view of another touch panel according to an embodiment of the present application;

[0072] FIG. 10 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0073] FIG. 11 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0074] FIG. 12 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0075] FIG. 13 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0076] FIG. 14 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0077] FIG. 15 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0078] FIG. 16 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0079] FIG. 17 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0080] FIG. 18 is a partial top view of still another touch panel according to an embodiment of the present application;

[0081] FIG. 19 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0082] FIG. 20 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0083] FIG. 21 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0084] FIG. 22 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0085] FIG. 23 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0086] FIG. 24 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0087] FIG. 25 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0088] FIG. 26 is a partial cross-sectional view of still another touch panel according to an embodiment of the present application;

[0089] FIG. 27 is a schematic view of a touch device according to an embodiment of the present application. DETAILED DESCRIPTION

[0090] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the drawings.

[0091] With the increasing demand of users for display products, a touch panel combining FMLOC (flexible multi-layer on cell) technology and COE (color film on encapsulation) technology is widely used. The FMLOC technology refers to a technology of setting a touch layer on a display substrate for realizing integration of touch and display. The COE can refer to a color film technology without a polarizer, or a technology of locating a color film on an encapsulation layer.

[0092] In some embodiments, referring to FIG. 1, the touch panel includes a touch layer and a color film layer. The touch layer includes a first touch trace layer, a touch insulating layer, a second touch trace layer 01 and a touch protection layer 02 which are stacked. The color film layer 105 includes a black matrix 03, a filter part 04 and a color film protection layer 05. The black matrix 03 includes a plurality of openings, and the filter part can be located in the openings.

[0093] The function of the touch protection layer 02 is to protect the second touch trace layer 01 from being corroded by water vapor or acid and alkali. In addition, the touch protection layer 02 can also play a flattening role, which can fill the about 2 μm (micron) step difference caused by the setting thickness of the second touch trace layer 01, so as to avoid the occurrence of bonding bubbles in the subsequent module process. In addition, the color film protection layer 05 can play a protection role and a flattening role for the filter part 04.

[0094] However, since the touch layer and the color film layer both need to be prepared in a low-temperature environment, otherwise the yield will be affected, a long time is needed to flow and cure the optical adhesive when forming the touch protection layer 03 and the color film protection layer 05, which seriously affects the production capacity of the touch panel preparation.

[0095] For the above reasons, the touch protection layer 02 and the color film protection layer 05 in FIG. 1 can be removed, but this solution will cause the second touch wiring layer 01 to be exposed, and thus the second touch wiring layer 01 will be corroded by water vapor or acid and alkali, and the yield of the touch panel is poor.

[0096] FIG. 2 is a structural schematic diagram of a touch panel according to an embodiment of the present application. Referring to FIG. 2, the touch panel 100 includes a display substrate 101, a touch layer 102, a first protection layer 103, and a second protection layer 104.

[0097] Referring to FIG. 2, the display substrate 101 includes a substrate 1011 and a first conductive layer 1012. FIG. 3 is a top view of a display substrate according to an embodiment of the present application. Referring to FIG. 3, the substrate 1011 has a display area 1011a and a peripheral (VA) area 1011b surrounding the display area 1011a. The peripheral area 1011b includes a first transition area (between the AA area and the pad bending area) 1011b1 disposed away from the display area 1011a, a pad bending area 1011b2, and a bonding area 1011b3. The first conductive layer 1012 is located on one side of the substrate 1011, and the first conductive layer 1012 includes a first transition pattern 10121 located at least in the pad bending area 1011b2.

[0098] Optionally, the substrate 1011 can be a glass substrate. The first transition pattern 10121 can also extend and be located in the peripheral area 1011b on both sides of the pad bending area 1011b2. For example, in FIG. 2, the first transition pattern 10121 can be located in the first transition area 1011b1 and the second transition area 1011b4 in addition to the pad bending area 1011b2.

[0099] The touch layer 102 includes a first touch wiring layer 1021, a touch insulating layer 1022, and a second touch wiring layer 1023, which are sequentially stacked away from one side of the display substrate 101. The orthographic projection of the second touch wiring layer 1023 on the substrate 1011 is located in the display area 1011a and the peripheral area 1011b. The first touch wiring layer 1021 and the second touch wiring layer 1023 include touch electrode lines s1 located in the display area 1011a. The second touch wiring layer 1023 includes a touch signal line s2 located in the first transition area 1011b1 and a touch interface pattern s3 located at least in the bonding area 1011b3. The touch signal line s2 is electrically connected to the first transition pattern 10121 and the touch electrode line s1, respectively. The touch interface pattern s3 is connected to a driving circuit in the touch panel 100 and the first transition pattern 10121, respectively, and the touch interface pattern s3 is used to interface the touch signal from the driving circuit.

[0100] The first touch wire layer 1021 can also be referred to as a first touch metal layer (Touch metal layer A, TMA) of the touch panel 100, and the second touch wire layer 1023 can also be referred to as a second touch metal layer (Touch metal layer B, TMB) of the touch panel 100.

[0101] In the embodiment of the present application, the first touch electrode s11 includes a main body electrode s111 and a bridge electrode s112. In combination with FIG. 4 and FIG. 5, one of the first touch wire layer 1021 and the second touch wire layer 1023 (for example, the first touch wire layer 1021 in FIG. 5) includes the bridge electrodes s112 of the plurality of first touch electrodes s11, and the other of the first touch wire layer 1021 and the second touch wire layer 1023 (for example, the second touch wire layer 1023 in FIG. 5) includes the main body electrodes s111 of the plurality of first touch electrodes s11 and the plurality of second touch electrodes s12. The touch insulating layer 1022 located in part of the display area 1011a includes a plurality of vias, and the bridge electrodes s112 and the main body electrodes s111 are electrically connected through the vias K in the touch insulating layer 1022.

[0102] Optionally, the second touch electrode s12 can also include a main body electrode and a bridge electrode. The main body electrode of the second touch electrode s12 and the bridge electrode of the second touch electrode s12 can be located in the same touch wire layer or different touch wire layers, which is not limited in the embodiment of the present application.

[0103] For example, the bridge electrode s112 of the first touch electrode s11 is located in the first touch wire layer 1021, the main body electrode s111 of the first touch electrode s12, and the main body electrode and the bridge electrode of the second touch electrode can be located in the second touch wire layer 1022.

[0104] Optionally, one of the first touch electrode s11 and the second touch electrode s12 is a transmitting (TX) electrode, and the other is a receiving (RX) electrode.

[0105] Referring to FIG. 4, the plurality of first touch electrodes s11 included in the touch panel 100 are arranged along a first direction X, and the plurality of second touch electrodes s12 are arranged along a second direction Y. Moreover, the bridge electrode s112 of the first touch electrode s11 and the second touch electrode s12 partially overlap on the substrate 1011. The first direction X and the second direction Y intersect, for example, the first direction X and the second direction Y are perpendicular. Optionally, the first direction X can be the pixel column direction of the display substrate 101, and the second direction Y can be the pixel row direction of the display substrate 101.

[0106] In the embodiments of the present application, the touch control electrode lines s1 included in the first touch control wiring layer 1021 and the second touch control wiring layer 1023 can constitute the first touch control electrodes s11 and the second touch control electrodes s12. The connection of the touch control signal lines s2 and the touch control electrode lines s1 can be used to represent the connection of the touch control signal lines s2 and the first touch control electrodes s11 or the second touch control electrodes s12.

[0107] Optionally, the touch panel 100 includes a plurality of touch control signal lines s2, a part of the touch control signal lines s2 are connected with the first touch control electrodes s11, and another part of the touch control signal lines s2 are connected with the second touch control electrodes s12.

[0108] Optionally, the driving circuit can be integrated on a flexible circuit board, and the flexible circuit board can be connected with the touch interface pattern s3. The touch interface pattern s3 is further connected with the touch control signal lines s2 through the first adapter pattern 10121. Thus, the touch control signal of the driving circuit can be transmitted to the touch control electrodes through the touch interface pattern s3, the first adapter pattern 10121 and the touch control signal lines s2 in sequence. The touch interface pattern s3 is used to bind the flexible circuit board to the touch panel 100. At least part of the touch interface pattern s3 can be used to constitute the touch interface J, for example, the lap joint part described in the following embodiments constitutes the touch interface J, and the area where the touch interface J is located can be referred to as FOP (flexible printed circuit on panel).

[0109] In the embodiments of the present application, since the first adapter pattern 10121 connecting the touch control signal lines s2 and the touch interface pattern s3 is located in the display substrate 101, the first adapter pattern 10121 is generally not exposed to the outside, and the first adapter pattern 10121 can be prevented from being corroded by water vapor or acid and alkali, thereby ensuring the yield of the touch panel 100.

[0110] In addition, the first protection layer 103 and the second protection layer 104 included in the touch panel 100 are located on the side of the second touch control wiring layer 1023 away from the substrate 1011. Moreover, the orthographic projection of the first protection layer 103 on the substrate 1011 covers the orthographic projection of the touch control electrode lines s1 and the touch control signal lines s2 on the substrate 1011. The orthographic projection of the second protection layer 104 on the substrate 1011 covers the orthographic projection of the touch interface pattern s3 on the substrate 1011.

[0111] That is, the touch electrode lines s1 and the touch signal lines s2 in the second touch wiring layer 1023 can be protected by the first protection layer 103. The touch interface pattern s3 in the second touch wiring layer 1023 can be protected by the second protection layer 104. Thus, the touch electrode lines s1, the touch signal lines s2 and the touch interface pattern s3 can be prevented from being exposed, and further, the touch electrode lines s1, the touch signal lines s2 and the touch interface pattern s3 can be prevented from being corroded by water vapor or acid and alkali, so as to ensure the yield of the touch panel 100.

[0112] In summary, the embodiment of the present application provides a touch panel. The touch panel includes a display substrate, a touch layer, a first protection layer and a second protection layer. The touch signal lines and the touch interface pattern in the touch layer are connected by the first switching pattern in the display substrate. The first protection layer and the second protection layer are both located on the side of the second touch wiring layer of the touch layer away from the substrate. The touch electrode lines and the touch signal lines in the second touch wiring layer can be protected by the first protection layer. The touch interface pattern in the second touch wiring layer can be protected by the second protection layer. Thus, the touch electrode lines, the touch signal lines and the touch interface pattern can be prevented from being exposed, and further, the touch electrode lines, the touch signal lines and the touch interface pattern can be prevented from being corroded by water vapor or acid and alkali, so as to ensure the yield of the touch panel.

[0113] In the embodiment of the present application, referring to FIG. 3, the peripheral area 1011b can include a first area b1 and a second area b2 located on both sides of the display area 1011a in the first direction X and arranged oppositely, and a third area b3 and a fourth area b4 located on both sides of the display area 1011a in the second direction Y and arranged oppositely.

[0114] Optionally, the first area b1 can be located on the lower side of the display area 1011a, and the second area b2 can be located on the upper side of the display area 1011a. The third area b3 can be located on the left side of the display area 1011a, and the fourth area b4 can be located on the right side of the display area 1011a.

[0115] For example, the first area b1 can include a first transition area 1011b1, a bending area 1011b2 and a binding area 1011b3. That is, the first transition area 1011b1, the bending area 1011b2 and the binding area 1011b3 are all located on the lower side of the display area 1011a.

[0116] Optionally, the flexible circuit board can be bound and connected with the binding area 1011b3 on the lower side of the touch panel 100. Thus, the touch interface pattern s3 can be located on the lower side of the display area 1011a, and further, at least part of the second protection layer 104 is located on the lower side of the display area 1011a to cover the touch interface pattern s3. FIG. 2 can be a partial sectional view of the lower side (the first area) of the touch panel 100.

[0117] The touch signal lines s2 of the second region b2, the third region b3 and the fourth region b4 can be covered and protected by the first protective layer 103.

[0118] FIG. 6 is a cross-sectional view of a touch panel according to an embodiment of the present application. In combination with FIG. 2, FIG. 3 and FIG. 6, the substrate 101 further includes a plurality of pixel units 1013 in the display region 1011a. The pixel units 1013 are configured to emit light. The touch panel 100 further includes a color film (CF) 105. The color film 105 includes a black matrix (BM) 1051 and a plurality of filter portions 1052.

[0119] The black matrix 1051 is located in the display region 1011a and the first transition region 1011b1. The black matrix 1051 located in the display region 1011a has a plurality of openings corresponding to the plurality of pixel units 1013. The filter portions 1052 are located in the openings, and the light emitted by the pixel units 1013 passes through the filter portions 1052 before being emitted.

[0120] Optionally, the material of the black matrix 1051 included in the color film 105 can be a black light shielding material, such as the material of the black matrix 1051 can include at least one of Cr (chromium) and carbon black. Alternatively, the black matrix 1051 included in the color film 105 can be formed by stacking a plurality of adjacent filter portions 1052. For example, the black matrix 1051 can be formed by stacking a plurality of adjacent filter portions 1052 with different colors. For each of the embodiments of the present application, the design of the black matrix 1051 can adopt any of the above two black matrix schemes.

[0121] Optionally, the width of the part of the black matrix 1051 located in the first transition region 1011b1 is greater than or equal to 380 μm (microns), and the width of the part of the black matrix 1051 in the second region b2, the third region b3 and the fourth region b4 can also be greater than or equal to 380 μm, so as to ensure that a window area of ink is obtained. The window area of ink refers to a specific area reserved on a cover glass (CG) during a printing process by a specific process technology. These areas allow the ink to be uniformly distributed and solidified in the area, thereby forming a desired pattern or text.

[0122] In the present embodiment, the second protective layer 104 includes a first protective portion 1041 prepared by the same patterning process as the filter portions 1052. That is, the first protective portion 1041 is prepared at the same time as the filter portions 1052. The material of the first protective portion 1041 can be the same as that of the filter portions 1052.

[0123] Optionally, the plurality of pixel units 1013 comprises a first pixel unit, a second pixel unit and a third pixel unit. The light emitted by the first pixel unit, the second pixel unit and the third pixel unit are of different colors.

[0124] The plurality of filter units 1052 comprises a first filter unit corresponding to the first pixel unit, a second filter unit corresponding to the second pixel unit, and a third filter unit corresponding to the third pixel unit. The first filter unit, the second filter unit and the third filter unit correspond to pixel units 1013 emitting light of different colors, and thus the first filter unit, the second filter unit and the third filter unit can filter light of different colors.

[0125] Optionally, the first filter unit, the second filter unit and the third filter unit can be prepared by three times of patterning processes respectively. The preparation sequence of the first filter unit, the second filter unit and the third filter unit is not limited in the embodiments of the present application.

[0126] Optionally, the first protection unit 1041 of the second protection layer 104 can be prepared by the same patterning process as the first filter unit. That is, the first protection unit 1041 and the first filter unit (red filter unit R-CF) can be made of the same material. For example, FIG. 7 shows a partial top view of the lower left corner of the touch panel. The areas other than the display area 1011a are represented by filled patterns to indicate the areas where the red filter unit R-CF is hollowed out, and the positions without the filled patterns are used to indicate the areas with the red filter unit R-CF to protect the underlying second touch wiring layer. For example, the substrate periphery of the touch signal line s2 in FIG. 7 has the red filter unit R-CF, and the area where the touch interface pattern s3 is located has the red filter unit R-CF.

[0127] Alternatively, the first protection unit 1041 of the second protection layer 104 can be prepared by the same patterning process as the second filter unit. That is, the first protection unit 1041 and the second filter unit (green filter unit G-CF) can be made of the same material. Alternatively, the first protection unit 1041 of the second protection layer 104 can be prepared by the same patterning process as the third filter unit. That is, the first protection unit 1041 and the third filter unit (blue filter unit G-CF) can be made of the same material.

[0128] Alternatively, referring to FIG. 8, the first protection unit 1041 of the second protection layer 104 can be prepared by the same patterning process as the black matrix. That is, the first protection unit 1041 and the black matrix can be made of the same material.

[0129] In the embodiment of the present application, the plurality of pixel units 1013 included in the display substrate 101 can be red pixel units (red, R), green pixel units (green, G) and blue pixel units (blue, B). Correspondingly, the plurality of filter units 1052 can include red filter units (R-CF) corresponding to the red pixel units, green filter units (G-CF) corresponding to the green pixel units, and blue filter units (B-CF) corresponding to the blue pixel units. The red filter units can be used to filter light other than red light and transmit red light. The green filter units can be used to filter light other than green light and transmit green light. The blue filter units can be used to filter light other than blue light and transmit blue light.

[0130] In the embodiment of the present application, the material of the red filter unit has a lower resistivity than the materials of the green filter unit and the blue filter unit. Therefore, if the first protective unit 1041 and the red filter unit are prepared by using the same patterning process, the material of the first protective unit 1041 can have a lower resistivity. In this way, the first protective unit 1041 can protect the touch interface pattern s3 while reducing the performance of the first protective unit 1041 in transmitting touch signals to the touch interface pattern s3, thereby improving the reliability of signal transmission.

[0131] Optionally, the color of the light emitted by the first pixel unit is red, and the first pixel unit can be referred to as a red pixel unit. The color of the light emitted by the second pixel unit is green, and the second pixel unit can be referred to as a green pixel unit. The color of the light emitted by the third pixel unit is blue, and the third pixel unit can be referred to as a blue pixel unit. Correspondingly, the first filter unit can be a red filter unit, the second filter unit can be a green filter unit, and the third filter unit can be a blue filter unit.

[0132] That is, the first protective unit 1041 and the first filter unit are prepared by using the same patterning process, which can mean that the first protective unit 1041 and the red filter unit are prepared by using the same patterning process, and the material of the first protective unit 1041 is the same as the material of the red filter unit.

[0133] Referring to FIGS. 3 and 4, the peripheral region 1011b further includes a second transition region 1011b4 between the bending region 1011b2 and the binding region 1011b3. The first transition region 1011a1 and the second transition region 1011b4 are both used for signal line routing in the touch panel 100. In combination with FIGS. 2 and 4, the touch interface pattern s3 includes a lapping portion s31 and a non-lapping portion s32. The lapping portion s31 can be located in the binding region 1011b3, and the non-lapping portion s32 can be located in the second transition region 1011b4. The lapping portion s31 is used to connect with a driving circuit.

[0134] It should be noted that the division of different regions in the embodiments of the present application does not have obvious boundaries in fact, and the regions limited by the dashed lines in the figure are only illustrative and do not mean that the division of the regions must be made according to the dashed lines in the figure. In addition, the overlapping part s31 and the non-overlapping part s32 of the touch interface pattern s3 can not be divided according to the boundaries of the second transition area 1011b4 and the binding area 1011b3 in the figure. The overlapping part s31 in the embodiments of the present application is used to represent the part of the touch interface pattern s3 that is bound with the flexible circuit board, and the non-overlapping part s32 is used to represent the part of the touch interface pattern s3 that is not bound with the flexible circuit board.

[0135] Optionally, the overlapping part s31 of the touch interface pattern s3 can be a gold pin used for binding connection with the flexible circuit board. The overlapping part s31 of the touch interface pattern s3 can be connected with the driving circuit integrated on the flexible circuit board.

[0136] Referring to FIG. 2, the second protective layer 104 further includes an anisotropic conductive film 1042. The anisotropic conductive film 1042 covers the overlapping part s31. That is, the anisotropic conductive film 1042 can play a protective role for the overlapping part s31 of the touch interface pattern s3, avoiding the exposure of the overlapping part s31. In addition, the anisotropic conductive film 1042 exhibits high conductivity in the vertical direction (the direction perpendicular to the substrate 1011) and high insulation in the parallel direction (the direction parallel to the surface of the substrate 1011). Therefore, by covering the overlapping part s31 with the anisotropic conductive film 1042, the signal transmitted by the driving circuit can be conveniently received, and the short circuit problem between the overlapping parts s31 of different touch interface patterns s3 can be avoided.

[0137] In addition, referring to FIG. 2, the first protective part 1041 included in the second protective layer 104 covers the non-overlapping part s32. That is, the first protective part 1041 can play a protective role for the non-overlapping part s32 of the touch interface pattern s3, avoiding the exposure of the non-overlapping part s32.

[0138] Optionally, the orthogonal projection of the anisotropic conductive film 1042 on the substrate 1011 and the orthogonal projection of the first protective part 1041 on the substrate 1011 partially overlap. For example, in FIG. 2, the edge part of the first protective part 1041 close to the anisotropic conductive film 1042 and the edge part of the anisotropic conductive film 1042 close to the first protective part 1041 overlap. In this way, it can be ensured that the touch interface pattern s3 is completely covered by the second protective layer 104, avoiding the exposure of the touch interface pattern s3, and further avoiding the corrosion of the touch interface pattern s3 by water vapor or acid and alkali.

[0139] Optionally, the overlapping position of the edge portion of the first protection portion 1041 close to the anisotropic conductive film 1042 and the edge portion of the anisotropic conductive film 1042 close to the first protection portion 1041 can be located on the left side of the junction of the second transition area 1011b4 and the bonding area 1011b3 as shown in FIG. 2, or can be located on the right side of the junction of the second transition area 1011b4 and the bonding area 1011b3 as shown in FIG. 2. The embodiments of the present application do not make any limitation on this, as long as the first protection portion 1041 and the anisotropic conductive film 1042 overlap each other to ensure that the touch interface pattern s3 is completely covered by the second protection layer 104.

[0140] For example, referring to FIG. 2, the edge portion of the first protection portion 1041 close to the anisotropic conductive film 1042 can be located below the edge portion of the anisotropic conductive film 1042 close to the first protection portion 1041. Alternatively, the edge portion of the anisotropic conductive film 1042 close to the first protection portion 1041 can be located below the edge portion of the first protection portion 1041 close to the anisotropic conductive film 1042. The embodiments of the present application do not make any limitation on the stacking relationship between the first protection portion 1041 and the anisotropic conductive film 1042.

[0141] Optionally, in order to ensure that the anisotropic conductive film 1042 can better protect the portion (referred to as the overlapping portion or the effective bonding portion) of the touch interface pattern s3 connected to the flexible circuit board, the distance between the side of the anisotropic conductive film 1042 close to the bending area 1011b2 and the side of the touch interface pattern s3 close to the bending area 1011b2 can be greater than or equal to 1 μm.

[0142] For example, the length of the portion (referred to as the overlapping portion or the effective bonding portion) of the touch interface pattern s3 connected to the flexible circuit board can be greater than or equal to 1 μm. The coating width of the anisotropic conductive film 1042 can be greater than or equal to 2 μm, wherein the portion of the anisotropic conductive film 1042 other than the portion covering the portion of the touch interface pattern s3 connected to the flexible circuit board (such as the portion after the 1 μm length of the portion covering the portion of the touch interface pattern s3 connected to the flexible circuit board) can be the overflow area of the anisotropic conductive film. Optionally, the coverage range of the first protection portion 1041 is from the side of the touch interface pattern s3 close to the bending area 1011b2 to the overflow area of the anisotropic conductive film 1042.

[0143] Optionally, referring to FIG. 2, the display substrate 101 further includes a first conductive insulating layer 1014 located on the side of the first conductive layer 1012 away from the substrate 1011.

[0144] In order to avoid the lapping effect of the first conductive insulating layer 1014 and the touch insulating layer 1022 on the lapping part s31 of the touch interface pattern s3 and the flexible circuit board, the area where the lapping part s31 is located is required not to be provided with the first conductive insulating layer 1014 and the touch insulating layer 1022. For example, the boundary of the first conductive insulating layer 1014 and the boundary of the touch insulating layer 1022 can be located on the side of the lapping part s31 of the touch interface pattern s3 close to the display area 1011a. Alternatively, the first conductive insulating layer 1014 and the touch insulating layer 1022 can be provided with a groove in the area where the lapping part s31 is located. The specific arrangement of the first conductive insulating layer 1014 and the touch insulating layer 1022 is not limited in the embodiments of the present application.

[0145] Referring to FIG. 2, the orthographic projection of the first transition pattern 10121 on the substrate 1011 and the orthographic projection of the touch signal line s2 on the substrate 1011 overlap, and the orthographic projection of the first transition pattern 10121 on the substrate 1011 and the orthographic projection of the non-lapping part s32 on the substrate 1011 overlap. The first transition pattern 10121 is connected with the touch signal line s2 through the via in the first conductive insulating layer 1014 and the touch insulating layer 1022, and the first transition pattern 10121 is also connected with the non-lapping part s32 of the touch interface pattern s3 through another via in the first conductive insulating layer 1014 and the touch insulating layer 1022.

[0146] FIG. 9 is a partial top view of a touch panel according to an embodiment of the present application. Referring to FIG. 9, the first conductive layer 1012 further includes a display signal line 10122, which is located in the bending area 1011b2 and the second transition area 1011b4, and the display signal line 10122 is arranged apart from the first transition pattern 10121. Moreover, the orthographic projection of the display signal line 10122 on the substrate 1011 and the orthographic projection of the touch interface pattern s3 on the substrate 1011 partially overlap. Optionally, the display signal line 10122 shown in FIG. 9 can be a driving power line (VDD).

[0147] In order to prevent the first transition pattern 10121 from affecting the display signal line 10122 in the same layer as the first transition pattern 10121 when connecting the touch signal line s2 and the touch interface pattern s3, the orthographic projection of the touch interface pattern s3 on the substrate 1011 and the orthographic projection of the first transition pattern 10121 on the substrate 1011 can partially overlap. For example, the orthographic projection of the boundary a1 of the touch interface pattern s3 on the substrate 1011 near the first transition pattern 10121 is closer to the orthographic projection of the first transition pattern 10121 on the substrate 1011 than the orthographic projection of the boundary a2 of the display signal line 10122 on the substrate 1011 near the first transition pattern 10121. In this way, the first transition pattern 10121 and the touch interface pattern s3 can be connected at the overlapping position.

[0148] In addition, in order to make the orthographic projection of the touch interface pattern s3 and the first transition pattern 10121 partially overlap, the touch signal line s2 and the touch interface pattern s3 can be directly connected by the first transition pattern 10121 to realize the transmission of the touch signal by extending the touch interface pattern s3 to the side near the display area 1011a (i.e., the touch interface pattern s3 can include a non-lap portion s32, and the non-lap portion s32 is protected by the first filter portion in the color filter layer 105) according to the scheme in FIG. 2. In addition, since the extended portion (e.g., the non-lap portion s32) of the touch interface pattern s3 can be covered by the first filter portion, the extended portion of the touch interface pattern s3 can be prevented from being exposed and corroded, thereby ensuring the yield of the touch panel.

[0149] In the embodiment of the present application, referring to FIG. 10, the first protection layer 103 includes a second protection portion 1031 prepared by the same patterning process as the filter portion 1052. The orthographic projection of the second protection portion 1031 on the substrate 1011 covers at least the portion of the orthographic projection of the touch signal line s2 on the substrate 1011 exposed by the black matrix. That is, the second protection portion 1031 can protect the touch signal line s2.

[0150] Optionally, the material of the red filter portion has a lower resistivity, and thus the second protection portion 1031 can be prepared by the same patterning process as the red filter portion. That is, the material of the second protection portion 1031 can be the same as the material of the red filter portion. In this way, the second protection portion 1031 can protect the touch interface pattern s3 without reducing the performance of the touch signal line s2 in transmitting the touch signal, thereby improving the reliability of signal transmission.

[0151] Referring to FIG. 10, the second protective portion 1031 and the black matrix 1051 overlap each other in the projection of the second protective portion 1031 on the substrate 1011. For example, the edge portion of the second protective portion 1031 close to the black matrix 1051 and the edge portion of the black matrix 1051 close to the second protective portion 1031 overlap each other. In an example, the overlap width of the second protective portion 1031 and the black matrix 1051 is greater than or equal to 1 μm, so that the touch signal line s2 is completely covered by the second protective portion 1031, and the touch signal line s2 is prevented from being exposed.

[0152] Alternatively, referring to FIG. 11, the first protective layer 103 includes a third protective portion 1032, and the third protective portion 1032 and the black matrix 1051 are in an integrated structure. The third protective portion 1032 covers the projection of the touch signal line s2 on the substrate 1011 in the projection of the third protective portion 1032 on the substrate 1011. That is, the third protective portion 1032 can protect the touch signal line s2. In an example, the third protective portion 1032 and the black matrix 1051 are in an integrated structure, which means that the third protective portion 1032 can be prepared at the same time as the black matrix 1051 of the color film layer 105, and the black matrix 1051 can cover the touch signal line s2 by designing a mask plate.

[0153] Referring to FIG. 2, FIG. 10 and FIG. 11, it can be seen that the first protective layer 103 further includes a first protective adhesive 1033 located in the display area 1011a and the first transition area 1011b1, and a second protective adhesive 1034 located in the bending area 1011b2. The first protective adhesive 1033 and the second protective adhesive 1034 are located on the side of the color film layer 105 away from the display substrate 101.

[0154] In an example of the present application, the protective adhesive generally includes a solid optical adhesive (OCA) and a liquid optical adhesive (OCR). The planarization effect of the solid optical adhesive is not as good as that of the liquid optical adhesive. Therefore, in the two schemes of FIG. 10 and FIG. 11, the first protective adhesive 1033 can be a solid optical adhesive. The reason is that the touch signal line s2 has been protected by the second protective portion 1031 or the third protective portion 1032, so that even if the first protective adhesive 1033 is a solid optical adhesive, the protection effect on the touch signal line s2 can be ensured.

[0155] In the embodiments of the present application, since the liquid optical adhesive has good fluidity before being cured by ultraviolet (UV), the liquid optical adhesive can better fill the film layer gap (such as filling the color film layer gap), and has good planarization effect. Therefore, whether the first protective layer 103 includes the second protective part 1031 or the third protective part 1032, the touch signal line s2 can be protected by making the first protective adhesive 1033 a liquid optical adhesive. That is, for the schemes shown in FIGS. 10 and 11, the first protective adhesive 1033 can be a solid optical adhesive or a liquid optical adhesive.

[0156] Optionally, by setting the first protective adhesive 1033 as a liquid optical adhesive, the planarization effect of the touch panel can be ensured. The better planarization effect of the touch panel can avoid the problem of color separation degradation of the touch panel.

[0157] Optionally, the second protective adhesive 1034 can be a modified chloroprene latex (MCL). The orthographic projection of the second protective adhesive 1034 on the substrate substrate 1011 and the orthographic projection of the first protective adhesive (solid optical adhesive or liquid optical adhesive) on the substrate substrate 1011 partially overlap. For example, referring to FIGS. 10 and 11, in addition to being located in the bending area 1011b2, a part of the second protective adhesive 1034 can extend to the first transition area 1011b1, that is, the second protective adhesive 1034 is also located in the first transition area 1011b1. Thus, the edge part of the modified chloroprene latex close to the first protective adhesive and the edge part of the first protective adhesive close to the second protective adhesive 1034 overlap, so that the touch signal line s2 is completely covered and the touch signal line s2 is ensured to be etched.

[0158] Optionally, referring to FIGS. 2, 8, 10 and 11, the orthographic projection of the second protective adhesive 1034 on the substrate substrate 1011 can cover the orthographic projection of the overlap of the touch signal line s2 and the first transition pattern 10121 on the substrate substrate 1011. Alternatively, the orthographic projection of the second protective adhesive 1034 on the substrate substrate 1011 can not cover the orthographic projection of the overlap of the touch signal line s2 and the first transition pattern 10121 on the substrate substrate 1011. The embodiments of the present application do not limit this, as long as the touch signal line s2 is completely covered.

[0159] In the embodiments of the present application, referring to FIG. 10, the second protection part 1031 covers the part of the orthogonal projection of the touch signal line s2 on the substrate 1011 which is exposed by the black matrix, and the second protection part 1031 does not extend to the bending area 1011b2. Alternatively, referring to FIG. 12, the second protection part 1031 covers the part of the orthogonal projection of the touch signal line s2 on the substrate 1011 which is exposed by the black matrix, and the second protection part 1031 can extend to the bending area 1011b2. The embodiments of the present application do not limit whether the second protection part 1031 extends to the bending area 1011b2.

[0160] Referring to FIG. 11, the third protection part 1032 covers the part of the orthogonal projection of the touch signal line s2 on the substrate 1011 which is exposed by the black matrix, and the third protection part 1032 does not extend to the bending area 1011b2. Alternatively, referring to FIG. 13, the third protection part 1032 covers the part of the orthogonal projection of the touch signal line s2 on the substrate 1011 which is exposed by the black matrix, and the third protection part 1032 can extend to the bending area 1011b2. The embodiments of the present application do not limit whether the third protection part 1032 extends to the bending area 1011b2.

[0161] In the embodiments of the present application, referring to FIG. 14, FIG. 15 and FIG. 16, the first protection layer 103 can include liquid optical glue located in the display area 1011a, the first transition area 1011b1 and the bending area 1011b2. That is, the display area 1011a, the first transition area 1011b1 and the bending area 1011b2 can all be covered and protected by the liquid optical glue. The coverage range of the liquid optical glue extends from the display area 1011a to the bending area 1011b2.

[0162] Compared with the scheme of FIG. 10 to FIG. 13, the bending area 1011b2 is protected by liquid optical glue instead of modified cyclic olefinic glue. Of course, in order to ensure the protection effect of the liquid optical glue on the bending area 1011b2, part of the liquid optical glue can extend to the second transition area 1011b4, that is, the liquid optical glue can also be located in the second transition area 1011b4.

[0163] Optionally, the bending area 1011b2 can refer to the area in which the touch panel 100 can be bent, so that the binding area 1011b3 and the flexible circuit board connected with the binding area 1011b3 are arranged on the back side of the touch panel 100, thereby reducing the frame width of the touch panel 100.

[0164] Since the bending area 1011b2 needs to be bent, the protective glue of the bending area 1011b2 needs to have a smaller elastic modulus. Generally, the elastic modulus of the modified cyclic olefin glue is greater than that of the liquid optical glue. Therefore, compared with the scheme of covering the modified cyclic olefin glue, the deformation stress of the bending area 1011b2 is smaller, the material stiffness is smaller, and the bending is more favorable.

[0165] Optionally, the transmittance of the liquid optical glue OCR is greater than 90%, and the thickness of the liquid optical glue can be greater than or equal to 10 μm and less than or equal to 200 μm. The liquid optical glue can be prepared by printing, and the viscosity of the glue is less than or equal to 50 cps. The liquid optical glue has better leveling than the solid optical glue. The viscosity of the liquid optical glue after ultraviolet (UV) curing is greater than or equal to 2000 gf / inch, and the elastic modulus is greater than or equal to 1.0*10 5 Pa (Pascal).

[0166] Optionally, the liquid optical glue OCR can be prepared by inkjet. The process includes inkjet, primary or pre-solidification, primary solidification, vacuum lamination, and defoaming.

[0167] Optionally, in the case where the first protective layer 103 includes the first protective glue 1033 (solid optical glue OCA or liquid optical glue OCR) located in the display area 1011a and the first transition area 1011b1 and the second protective glue 1034 (modified cyclic olefin glue MCL) located in the bending area 1011b2, two glue coating processes are required. In the case where the first protective layer 103 includes the liquid optical glue located in the display area 1011a, the first transition area 1011b1 and the bending area 1011b2, only one glue coating process is required. That is, the scheme of FIGS. 14-16 can save one glue coating process compared with the scheme of FIGS. 2, 8, 10-13.

[0168] Optionally, the minimum (min) preparation thickness of the modified cyclic olefin glue can be 70±20 μm, that is, the minimum thickness of the modified cyclic olefin glue is greater than or equal to 50 μm and less than or equal to 90 μm. The minimum preparation thickness of the liquid optical glue can be 10±2 μm, that is, the minimum thickness of the liquid optical glue is greater than or equal to 8 μm and less than or equal to 12 μm. That is, the minimum thickness of the liquid optical glue is smaller than that of the modified cyclic olefin glue, which can achieve the purpose of thinning and the benefit of narrow frame is obvious.

[0169] The scheme of the embodiments of the present application is also applicable to products without COE (i.e., the touch panel does not include the color film layer 105). Referring to FIG. 17, the touch panel 100 further includes a polarizing layer 106 located on the side of the touch layer 102 away from the display substrate 101. The polarizing layer 106 can control the direction of specific light beams and reduce the impact of ambient light on the display of the touch panel 100.

[0170] Optionally, the polarizing layer 106 is located in the display area 1011a and the first transition area 1011b1. The first protective layer 103 includes a pressure sensitive adhesive (PSA) 1035 located between the polarizing layer 106 and the touch layer 102. The pressure sensitive adhesive 1035 is located in the display area 1011a and the first transition area 1011b1. The main function of the pressure sensitive adhesive 1035 is to fix and bond the polarizing layer 106 to the touch layer 102. In this case, the pressure sensitive adhesive 1035 can protect the touch signal line s2 of the second touch wiring layer 1023 from being exposed.

[0171] Optionally, in order to improve the bending performance of the bending area 1011b2, the first protective layer 103 further includes a modified cyclic olefin adhesive 1036 located in the bending area 1011b2. The orthogonal projection of the modified cyclic olefin adhesive 1036 on the substrate 1011 and the orthogonal projection of the pressure sensitive adhesive 1035 on the substrate 1011 partially overlap. For example, in FIG. 17, the edge portion of the modified cyclic olefin adhesive 1036 close to the pressure sensitive adhesive 1035 and the edge portion of the pressure sensitive adhesive 1035 close to the modified cyclic olefin adhesive 1036 overlap.

[0172] In the embodiments of the present application, FIG. 18 is a partial top view of another touch panel provided by the embodiments of the present application. In combination with FIGS. 3, 4 and 18, the peripheral area 1011b further includes a second transition area 1011b4 located between the bending area 1011b2 and the binding area 1011b3. The first conductive layer 1012 further includes a display signal line 10122. The display signal line 10122 is located in the bending area 1011b2 and the second transition area 1011b4, and the display signal line 10122 and the first transition pattern 10121 are spaced apart. Moreover, at least part of the orthogonal projection of the display signal line 10122 on the substrate 1011 is close to the orthogonal projection of the touch interface pattern s3 on the substrate 1011 relative to the bending area 1011b2. Optionally, the display signal line 10122 shown in FIG. 18 can be a driving power line (VDD).

[0173] That is, the boundary a2 of the display signal line 10122 on the side close to the first transition pattern 10121 on the substrate 1011 is closer to the boundary a1 of the touch interface pattern s3 on the side close to the first transition pattern 10121 on the substrate 1011.

[0174] In this case, in order to avoid the influence on the display signal line 10122 in the same layer as the first transition pattern 10121 when the touch interface pattern s3 and the first transition pattern 10121 are connected, the projection of the touch interface pattern s3 on the substrate 1011 and the projection of the first transition pattern 10121 on the substrate 1011 are required to be non-overlapping.

[0175] As an optional implementation, referring to FIG. 17 and FIGS. 19-21, the first touch wiring layer 1021 includes a second transition pattern 10211 in the second transition area 1011b4. The second transition pattern 10211 is connected with the first transition pattern 10121 and the touch interface pattern s3 respectively. In this case, the projection of the second transition pattern 10211 on the substrate 1011 and the projection of the display signal line 10122 on the substrate 1011 are partially overlapping. That is, the touch signal line s2 is connected with the first transition pattern 10121 in the first conductive layer 1012 and then connected to the second transition pattern 10211 in the first touch wiring layer 1021 through layer change, and the second transition pattern 10211 is connected with the touch interface pattern s3, thereby realizing the connection between the touch signal line s2 and the touch interface pattern s3.

[0176] For example, the display substrate 101 further includes a first conductive insulating layer 1014 on the side of the first conductive layer 1012 away from the substrate 1011. The boundary of the first conductive insulating layer 1014 and the boundary of the touch insulating layer 1022 are on the side of the touch interface pattern s3 close to the bending area 1011b2. The first transition pattern 10121 is connected with the touch signal line s2 through the via in the first conductive insulating layer 1014 and the touch insulating layer 1022, and the first transition pattern 10121 is connected with the second transition pattern 10211 through the via in the first conductive insulating layer 1014, and the second transition pattern 10211 is connected with the touch interface pattern s3.

[0177] In the embodiments of the present application, referring to FIGS. 19-21, the second protective layer 104 includes an anisotropic conductive film 1042. The anisotropic conductive film 1042 covers the touch interface pattern s3. That is, the anisotropic conductive film 1042 can protect the touch interface pattern s3 from being exposed. Moreover, the anisotropic conductive film 1042 exhibits high conductivity in the vertical direction (perpendicular to the surface of the substrate 1011) and high insulation in the parallel direction (parallel to the surface of the substrate 1011). Thus, by covering the touch interface pattern s3 with the anisotropic conductive film 1042, the signal transmitted by the driving circuit can be conveniently received, and the short circuit problem between different touch interface patterns s3 can be avoided.

[0178] Optionally, referring to FIGS. 19-21, a part of the second transfer pattern 10211 other than the part in contact with the touch interface pattern s3 is not covered by the touch insulation layer 1022. Thus, the anisotropic conductive film 1042 can also cover the part of the second transfer pattern 10211 that is not covered by the touch insulation layer 1022, so as to avoid the exposure of the second transfer pattern 10211 and the corrosion of the second transfer pattern 10211 by water vapor or acid and alkali. Alternatively, the touch insulation layer 1022 can also completely cover the other part of the second transfer pattern 10211 other than the part in contact with the touch interface pattern s3, so as to ensure that the second transfer pattern 10211 is not exposed.

[0179] It should be noted that, referring to FIG. 17 and FIGS. 19-21, the above-mentioned connection of the touch signal line s2 and the touch interface pattern s3 by the first transfer pattern 10121 and the second transfer pattern 10211 is applicable to both the scheme in which the touch panel 100 includes the color filter layer 105 and the scheme in which the touch panel 100 includes the polarizing layer 106.

[0180] Optionally, for the scheme in which the touch panel 100 includes the color filter layer 105 and the touch signal line s2 and the touch interface pattern s3 are connected by the first transfer pattern 10121 and the second transfer pattern 10211, the first protective layer 103 can be arranged as in any one of FIGS. 2, 8, and 10-16, and the embodiments of the present application do not make specific limitations in this regard.

[0181] As another alternative implementation, referring to FIGS. 22-25, the display substrate 101 further includes a first conductive insulating layer 1014 on the side of the first conductive layer 1012 away from the base substrate 1011, a second conductive layer 1015, and a second conductive insulating layer 1016. The second conductive layer 1015 includes a third transition pattern 10151 on the second transition region 1011b4, which is connected to the first transition pattern 10121 and the touch interface pattern s3, respectively. In this case, the orthographic projection of the third transition pattern 10151 on the base substrate 1011 partially overlaps the orthographic projection of the display signal line 10122 on the base substrate 1011. That is, the touch signal line s2 is connected to the first transition pattern 10121 in the first conductive layer 1012, and then is switched to the third transition pattern 10151 in the second conductive layer 1015, which is connected to the touch interface pattern s3, thereby realizing the connection of the touch signal line s2 to the touch interface pattern s3.

[0182] The boundary of the first conductive insulating layer 1014, the boundary of the second conductive insulating layer 1016, and the boundary of the touch insulating layer 1022 are located on the side of the touch interface pattern s3 close to the bending region 1011b2. The first transition pattern 10121 is connected to the touch signal line s2 through the via holes in the first conductive insulating layer 1014, the second conductive insulating layer 1016, and the touch insulating layer 1022, and is connected to the third transition pattern 10151 through the via hole in the first conductive insulating layer 1014, and the third transition pattern 10151 is in contact with the touch interface pattern s3.

[0183] In the embodiments of the present application, referring to FIGS. 22-25, the second protective layer 104 includes an anisotropic conductive film 1042. The anisotropic conductive film 1042 covers the touch interface pattern s3. That is, the anisotropic conductive film 1042 can protect the touch interface pattern s3 from being exposed. Moreover, the anisotropic conductive film 1042 exhibits high conductivity in the vertical direction (the direction perpendicular to the base substrate 1011) and high insulation in the parallel direction (the direction parallel to the surface of the base substrate 1011). Thus, covering the touch interface pattern s3 with the anisotropic conductive film 1042 can facilitate the reception of signals transmitted by the driving circuit, and can avoid short circuit problems between different touch interface patterns s3.

[0184] Optionally, referring to FIGS. 22-25, a portion of the third transfer pattern 10151 other than the portion in contact with the touch interface pattern s3 is not covered by the touch insulation layer 1022, so that the anisotropic conductive film 1042 can also cover the portion of the third transfer pattern 10151 that is not covered by the touch insulation layer 1022, which can avoid the third transfer pattern 10151 being exposed and corroded by water vapor or acid and alkali. Alternatively, the touch insulation layer 1022 can also completely cover the other portion of the third transfer pattern 10151 that is not in contact with the touch interface pattern s3, which can ensure that the third transfer pattern 10151 is not exposed.

[0185] It should be noted that, referring to FIGS. 22-25, the above-mentioned connection of the touch signal line s2 and the touch interface pattern s3 by the first transfer pattern 10121 and the third transfer pattern 10151 is applicable to both the scheme in which the touch panel 100 includes the color filter layer 105 and the scheme in which the touch panel 100 includes the polarizing layer 106.

[0186] Optionally, for the scheme in which the touch panel 100 includes the color filter layer 105 and the touch signal line s2 and the touch interface pattern s3 are connected by the first transfer pattern 10121 and the third transfer pattern 10151, the first protective layer 103 can be arranged as shown in any one of FIGS. 2, 8, and 10-16, which is not limited in the embodiments of the present application.

[0187] In the embodiments of the present application, referring to FIG. 6, the display substrate 101 includes a light-emitting circuit layer N, a light-emitting unit layer M, and an encapsulation layer G stacked in a direction away from the substrate substrate 1011.

[0188] The light-emitting circuit layer N includes an active layer (poly) n1, a first gate insulator (GI) n2, a first gate layer (gate1) n3, a second gate insulator (GI2) n4, a second gate layer (gate2) n5, an inter level dielectric (ILD) n6, a first source-drain layer (SD1) n7, a first planarization layer (PLN1) n8, a second source-drain layer (SD2) n9, and a second planarization layer (PLN2) n10, which are stacked in a direction away from the substrate substrate 1011.

[0189] The light emitting unit layer M includes an anode layer m1, a pixel definition layer (PDL) m2, a light emitting layer m3, and a cathode layer m4, which are stacked in a direction away from the substrate substrate 1011.

[0190] The encapsulation layer G includes a first sub-encapsulation layer g1, a second sub-encapsulation layer g2, and a third sub-encapsulation layer g3, which are stacked in a direction away from the substrate substrate 1011.

[0191] Optionally, the material of the first sub-encapsulation layer g1 and the third sub-encapsulation layer g3 includes inorganic material, and the material of the second sub-encapsulation layer g2 includes organic material.

[0192] For example, the first sub-encapsulation layer g1 and the third sub-encapsulation layer g3 can be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide), and SiOxNy (silicon oxynitride). The second sub-encapsulation layer g2 can be made of resin material. The resin can be thermoplastic resin or thermosetting resin. The thermoplastic resin can include PMMA (polymethyl methacrylate) resin, and the thermosetting resin can include epoxy resin.

[0193] Optionally, the second sub-encapsulation layer g2 can be made by ink jet printing (IJP) method. The first sub-encapsulation layer g1 and the third sub-encapsulation layer g3 can be made by chemical vapor deposition (CVD) method. The first sub-encapsulation layer g1 and the third sub-encapsulation layer g3 can be referred to as CVD layer, and the second sub-encapsulation layer g2 can be referred to as IJP layer.

[0194] Optionally, since some signal lines (such as data lines) in the display substrate need to be routed in the first source-drain layer n7, the first source-drain layer n7 can not have enough space to set the switching pattern. Based on this, the second source-drain layer n9 in FIG. 6 can be used to set the first switching pattern, that is, the second source-drain layer n9 in FIG. 6 can be the first conductive layer 1012. That is, the touch signal line s2 can be connected through the first switching pattern 10121 in the second source-drain layer n9 and the touch interface pattern s3.

[0195] Alternatively, if the first source-drain layer n7 has enough space to be used to set the switching pattern, the first source-drain layer n7 in FIG. 6 can be used to set the first switching pattern. That is, the first source-drain layer n7 in FIG. 6 can be the first conductive layer 1012. Embodiments of the present application do not make specific limitation on whether the first conductive layer 1012 is the first source-drain layer n7 or the second source-drain layer n9. Alternatively, the accompanying drawings in embodiments of the present application can be drawn by taking the first source-drain layer n7 as the first conductive layer 1012 as an example.

[0196] In embodiments of the present application, as shown in FIG. 3, the display substrate 101 includes a plurality of pixel units 1013 located in the display area 1011a. The pixel unit 1013 includes a light-emitting circuit 10131 and a light-emitting unit 10132. The light-emitting circuit layer N of the display substrate 101 includes the light-emitting circuit 10131 of the plurality of pixel units 1013, and the light-emitting circuit 10131 includes a plurality of thin film transistors T and at least one storage capacitor Cst. The light-emitting unit layer M includes the light-emitting unit 10132 of the plurality of pixel units 1013. For example, the light-emitting circuit 10131 and the light-emitting unit 10132 of one pixel unit 1013 are shown in FIG. 6.

[0197] The active layer n1 includes an active pattern n11 of the plurality of thin film transistors T, and the active pattern n11 includes a source region and a drain region.

[0198] The first gate layer n3 includes a gate pattern n31 of the plurality of thin film transistors T and a first capacitor plate n32 of the at least one storage capacitor Cst. The normal projection of the gate pattern n31 on the substrate 1011 and the normal projection of the active pattern n11 on the substrate 1011 at least partially overlap.

[0199] The second gate layer n5 includes a second capacitor plate n51 of the at least one storage capacitor Cst. The normal projection of the second capacitor plate n51 on the substrate 1011 and the normal projection of the first capacitor plate n32 on the substrate 1011 at least partially overlap.

[0200] The first source-drain layer n7 includes a source n71 and a drain n72 of the plurality of thin film transistors T. The source n71 is connected to the source region of the active pattern n11 through the via hole in the interlayer dielectric layer n6, the second gate insulating layer n4 and the first gate layer n3. The drain n72 is connected to the drain region of the active pattern n11 through the via hole in the interlayer dielectric layer n6, the second gate insulating layer n4 and the first gate insulating layer n2.

[0201] The second source-drain layer n9 includes a first connecting part n91 located in the display area 1011a and a first switching pattern 10121 located in the bending area 1011b2. The first connecting part n91 is connected to the drain n72 through the via hole in the first planar layer n8.

[0202] The anode layer m1 includes a plurality of anode patterns m11 of the plurality of light emitting units 10132. The anode patterns m11 are connected through the via of the second planar layer n10 and the first connection n91.

[0203] The pixel defining layer m2 includes a plurality of hollow regions, which expose at least part of the anode patterns m11.

[0204] The light emitting layer m3 includes a plurality of light emitting patterns m31 of the plurality of light emitting units 10132. The light emitting patterns m31 are connected through the hollow regions and the anode patterns m11.

[0205] The cathode layer m4 covers the orthographic projection of the plurality of light emitting patterns m31 on the substrate substrate 1011, and the cathode layer m4 and the light emitting patterns m31 of the plurality of light emitting units 10132 are connected.

[0206] Referring to FIG. 6, the light emitting unit layer M further includes a support layer m5 located on the side of the pixel defining layer m2 away from the substrate substrate 1011. In the display product, the support layer m5 mainly plays a role in protection, adjustment, and enhancement of display effect and improvement of overall product performance.

[0207] Referring to FIG. 6, the touch layer 102 further includes a touch buffer 1024 located between the display substrate 101 and the first touch trace layer 1021. The touch buffer 1024 plays a role in improving the setting reliability of the touch trace layer in the touch layer 102.

[0208] In the embodiment of the present application, the display substrate 101 in FIG. 6 is a double-layer source-drain layer. The touch signal line s2 and the touch interface pattern s3 can be connected through the first transfer pattern 10121 (FIG. 2, FIG. 8, and FIG. 10 to FIG. 16). Alternatively, the touch signal line s2 and the touch interface pattern s3 can be connected through the first transfer pattern 10121 and the second transfer pattern 10211 (FIG. 17, FIG. 19 to FIG. 21).

[0209] FIG. 26 is a cross-sectional schematic view of another touch panel provided by the embodiment of the present application. As shown in FIG. 26, the light emitting circuit layer N further includes a third source-drain layer (SD3) n11 and a third planar layer (PLN3) n12 located on the side of the second planar layer n10 away from the substrate substrate 1011.

[0210] The third source-drain layer n11 includes a second connecting portion n111 located in the display region 1011a. The second connecting portion n111 is connected through a via of the second planarization layer n10 and the first connecting portion n91. The anode pattern m11 is connected through a via of the third planarization layer n12 and the second connecting portion n111. The second connecting portion n111 can serve as a connecting pattern of the anode pattern m11 and the first connecting portion n91.

[0211] Alternatively, since some signal lines (such as data lines) in the display substrate need to be routed in the first source-drain layer n7, the first source-drain layer n7 can not have enough space to set the first switching pattern. Based on this, the second source-drain layer n9 in FIG. 26 can be used to set the first switching pattern, i.e., the second source-drain layer n9 in FIG. 26 can be the first conductive layer 1012. That is, the touch signal line s2 can be connected through the first switching pattern 10121 in the second source-drain layer n9 and the touch interface pattern s3.

[0212] Alternatively, if the first source-drain layer n7 has enough space to set the first switching pattern, the first source-drain layer n7 in FIG. 26 can be used to set the first switching pattern. That is, the first source-drain layer n7 in FIG. 26 can be the first conductive layer 1012.

[0213] Alternatively, the third source-drain layer n11 in FIG. 26 can be used to set the first switching pattern, i.e., the third source-drain layer n11 in FIG. 26 can be the first conductive layer 1012. The embodiments of the present application do not make specific limitations on whether the first conductive layer 1012 is the first source-drain layer n7, the second source-drain layer n9, or the third source-drain layer n11. Alternatively, the drawings in the embodiments of the present application can be drawn by taking the first source-drain layer n7 as the first conductive layer 1012 as an example.

[0214] In the embodiments of the present application, the display substrate 101 in FIG. 26 is a three-layer source-drain layer. In this case, the touch signal line s2 and the touch interface pattern s3 can be connected through the first switching pattern 10121 (FIG. 2, FIG. 8, and FIGS. 10-16). Alternatively, the touch signal line s2 and the touch interface pattern s3 can be connected through the first switching pattern 10121 and the second switching pattern 10211 (FIG. 17, FIGS. 19-21). Alternatively, the third source-drain layer n11 in FIG. 26 can be the second conductive layer 1015. The touch signal line s2 and the touch interface pattern s3 can be connected through the first switching pattern 10121 in the second source-drain layer n9 and the third switching pattern 10151 in the third source-drain layer n11 (FIGS. 22-25).

[0215] Optionally, the touch panel 100 can further include a cover plate located on the side of the touch layer 102 away from the display substrate 100. For example, the cover plate can be located on the component of the touch panel 100 farthest away from the display substrate 100. The cover plate can be a cover glass (CG).

[0216] Optionally, in the case that the first protective layer 103 is liquid optical glue (OCR), the display area 1011a, the second area b2, the third area b3 and the fourth area b4 in the peripheral area 1011b can all be covered and protected by the liquid optical glue. Alternatively, in the case that the first protective layer 103 is solid optical glue (OCA), the display area 1011a, the second area b2, the third area b3 and the fourth area b4 in the peripheral area 1011b can all be covered and protected by the solid optical glue. Alternatively, in the case that the first protective layer 103 is pressure sensitive adhesive (PSA), the display area 1011a, the second area b2, the third area b3 and the fourth area b4 in the peripheral area 1011b can all be covered and protected by the pressure sensitive adhesive. The solid optical glue OCA and the pressure sensitive adhesive PSA can both be adhesive materials for attaching polyethylene terephthalate (PET) film. Alternatively, in the case that the touch panel 100 includes a cover plate, the display area 1011a, the second area b2, the third area b3 and the fourth area b4 in the peripheral area 1011b can all be covered and protected by the cover plate (CG).

[0217] In the embodiments of the present application, since the bending performance of the organic material is better than that of the inorganic material, and the bending area 1011b needs to be bent, the inorganic material layer (such as the first gate insulating layer n2, the second gate insulating layer n4 and the second gate insulating layer n6) located in the bending area can be etched away and filled with an organic material (such as the first planarization layer n8). In this way, the bending performance of the bending area 1011b2 can be ensured.

[0218] Referring to FIGS. 2, 8, 10-17 and 19-25, the touch panel 100 further includes a third protective layer 107 located on the side of the display substrate 101 away from the touch layer 102. The third protective layer 107 covers the display area 1011a, the first transition area 1011b1 and the binding area 1011b3. That is, the third protective layer 107 can protect the side of the display area 1011a, the first transition area 1011b1 and the binding area 1011b3 of the display substrate 101 away from the touch layer 102. Optionally, the third protective layer 107 can be a below film (BF) of the display substrate 101.

[0219] Optionally, the third protective layer 107 can cover other regions except the bending region 1011b2. That is, the third protective layer 107 can play a protective role on the side of the display substrate 101 except the bending region 1011b2 and away from the touch control layer 102. The third protective layer 107 exposes the bending region 1011b2, so as to obtain a smaller bending radius when the bending region 1011b2 is bent, and facilitate obtaining a light and thin product.

[0220] Referring to FIG. 2, FIG. 8, FIG. 10 to FIG. 17, and FIG. 19 to FIG. 25, the first conductive layer 1012 further includes a bridging pattern 10123 located in the binding region 1011b3. The bridging pattern 10123 can be used to connect the touch interface pattern s3. For example, in FIG. 2, FIG. 8, FIG. 10 to FIG. 17, the bridging pattern 10123 and the touch interface pattern s3 are directly connected in contact. Or in FIG. 19 to FIG. 21, the bridging pattern 10123 and the touch interface pattern s3 are indirectly connected through the second conversion pattern 10211. Or in FIG. 22 to FIG. 25, the bridging pattern 10123 and the touch interface pattern s3 are indirectly connected through the third conversion pattern 10151.

[0221] By arranging the bridging pattern 10123 in the first conductive layer 1012 to connect the touch interface pattern s3, the resistivity of the touch interface pattern s3 for transmitting touch signals can be reduced, and the reliability of signal transmission can be improved.

[0222] Optionally, the first touch wiring layer 1021 can include patterns or wirings located in the peripheral region 1011b. For example, the first touch wiring layer 1021 can include patterns or wirings located in the first transition region 1011b1, and / or located in the bending region 1011b2, and / or located in the second bending region 1011b4, and / or located in the binding region 1011b3.

[0223] In the embodiments of the present application, since the scheme of the embodiments of the present application removes the touch protective layer between the second touch wiring layer 1023 and the color film layer 105, the distance between the black matrix 1051 in the color film layer 105 and the light-emitting pattern m31 in the light-emitting unit 10132 in the vertical direction can be reduced. For example, the reduced distance can be the thickness of the touch protective layer in the related art, which is about 2 μm. Thus, the luminance decay (L-decay) and the field of view (FOV) of the entire touch panel can be significantly improved.

[0224] Optionally, under a 30-degree viewing angle, the luminance decay can be reduced by 1% to 3%, and the specific value of the luminance decay is related to the aperture ratio of the black matrix 1051.

[0225] In summary, this application provides a touch panel comprising a display substrate, a touch layer, a first protective layer, and a second protective layer. Touch signal lines and touch interface patterns in the touch layer are connected via a first transition pattern within the display substrate. Both the first and second protective layers are located on the side of the second touch trace layer of the touch layer away from the substrate. Touch electrode lines and touch signal lines in the second touch trace layer can be protected by the first protective layer. Touch interface patterns in the second touch trace layer can be protected by the second protective layer. This avoids exposing the touch electrode lines, touch signal lines, and touch interface patterns, thereby preventing them from being corroded by moisture or acids / alkalis, ensuring the yield rate of the touch panel.

[0226] Figure 27 is a schematic diagram of a touch device provided in an embodiment of this application. Referring to Figure 27, the touch device includes a power supply component 200 and a touch panel 100 as provided in the above embodiment. The power supply component 200 is connected to the touch panel 100 and is used to supply power to the touch panel 100.

[0227] Optionally, the touch device can be an organic light-emitting diode (OLED) display device. The touch device can be any suitable display device, including but not limited to mobile phones, tablets, televisions, monitors, laptops, digital photo frames, navigators, and e-readers—any product or component with a display function.

[0228] Since the touch device can have essentially the same technical effects as the touch panel described in the previous embodiments, for the sake of brevity, the technical effects of the touch device will not be described again here.

[0229] The terminology used in the embodiments section of this application is for explaining the embodiments of this application only and is not intended to limit this application. Unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains.

[0230] The Description of Embodiments section of this application describes several embodiments; however, this description is exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0231] This application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The presently disclosed embodiments, features and elements can also be combined with any conventional feature or element to form a unique application within the scope of the claims. Any feature or element of any embodiment can also be combined with features or elements from other application schemes to form another unique application within the scope of the claims. Therefore, it is to be understood that any feature shown and / or discussed in this application can be implemented alone or in any suitable combination. Embodiments are, therefore, not to be limited to the specific embodiments recited herein, but only by the claims and their equivalents as patenlable by the patent laws of the country that issues the patent. Moreover, various modifications and changes can be made thereto within the scope of the claims.

[0232] Furthermore, in describing representative embodiments, the specification can have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process depends on more than one step, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps can be possible, depending on the particular application, and the sequence of steps need not be performed in the order presented in this specification. The specific order of steps presented in the specification is not to be construed as a limitation, but is presented for the sake of clarity. Further, the claims should not be limited to the steps of the method and / or process in the order presented in this specification. One of ordinary skill in the art can readily recognize that the order of steps can be varied and that the sequences of steps need not be performed in the order presented in this specification without departing from the spirit and scope of the application.

[0233] In the drawings, the size, the thickness or the region of one or a plurality of constituent elements, a layer thickness, or the like is sometimes exaggerated for the sake of clarity. In addition, the drawings schematically show ideal examples, and one embodiment of the present application is not limited to the shapes or the numerical values shown in the drawings.

[0234] The ordinal numbers "first", "second", "third", and the like in the specification are used to avoid confusion among constituent elements, and are not intended to indicate the number of the same. "A plurality of" in the specification means two or more.

[0235] The thickness range of a film layer in the specification, A to B, is used to indicate that the thickness is between A and B, and includes both end point values of A and B.

[0236] In this specification, terms of "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicating the positional or locational relationship are used to describe the positional relationship of components with reference to the drawings for the convenience of explanation and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting on the application. The positional relationship of components is changed as appropriate according to the direction of the components described. Therefore, it is not limited to the words described in the specification, and can be appropriately changed according to the situation.

[0237] In this specification, unless explicitly defined and limited otherwise, the terms "connected", "connected" should be broadly understood. For example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate piece, or communication inside two elements. For those skilled in the art, the meaning of the above terms in this application can be understood according to the situation.

[0238] In this specification, a transistor refers to an element including at least a gate electrode (gate), a drain electrode (drain terminal, drain region, or drain), and a source electrode (source terminal, source region, or source). The transistor has a channel region between the drain electrode and the source electrode, and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to a region where current mainly flows.

[0239] In this specification, the first electrode of the transistor can be the drain electrode, and the second electrode of the transistor can be the source electrode, or the first electrode of the transistor can be the source electrode, and the second electrode of the transistor can be the drain electrode. In the case of using a transistor with opposite polarity or in the case of changing the direction of current in the circuit operation, the functions of "source electrode" and "drain electrode" are sometimes exchanged with each other. Therefore, in this specification, "source electrode" and "drain electrode" can be exchanged with each other, and "source terminal" and "drain terminal" can be exchanged with each other.

[0240] In this specification, "connection" includes the case where components are connected through an element having a certain electrical action. The element having a certain electrical action is not particularly limited as long as it can transmit an electrical signal between the components to be connected. Examples of the element having a certain electrical action include not only an electrode and a wiring but also a switching element such as a transistor, a resistor, an inductor, a capacitor, and another element having a variety of functions.

[0241] In this specification, "film" and "layer" can be replaced with each other. For example, "conductive layer" can be replaced with "conductive film" at times. Similarly, "insulating film" can be replaced with "insulating layer" at times.

[0242] In this application, "thickness", "height" refer to the vertical distance between the surface of the film layer away from the substrate side to the surface close to the substrate side.

[0243] In this specification, triangle, rectangle, trapezoid, pentagon or hexagon, etc. are not strictly, can be approximately triangle, rectangle, trapezoid, pentagon or hexagon, etc. There can be some small deformation caused by tolerance, there can be an angle, arc edge and deformation, etc.

[0244] In this application, "about" refers to not strictly limited boundaries, allowing the range of process and measurement error values.

[0245] The above only for optional embodiments of the present application, and not to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A touch panel, characterized by, The touch panel comprises a display substrate, a touch layer, a first protective layer and a second protective layer; the display substrate comprises: a substrate substrate having a display area and a peripheral area surrounding the display area, the peripheral area comprising a first transition zone, a bending zone and a binding zone arranged away from the display area; and a first conductive layer on one side of the substrate substrate, the first conductive layer comprising a first adapter pattern in the bending zone; The touch layer comprises: a first touch trace layer, a touch insulating layer and a second touch trace layer stacked in turn away from one side of the display substrate; the second touch trace layer is located in the display area and the peripheral area; the first touch trace layer and the second touch trace layer comprise touch electrode lines in the display area, touch signal lines in the first transition zone and at least touch interface patterns in the binding zone, the touch signal lines are electrically connected with the first adapter pattern and the touch electrode lines respectively, the touch interface patterns are connected with the driving circuit in the touch panel and the first adapter pattern respectively, and the touch interface patterns are used for receiving touch signals from the driving circuit; The first protective layer and the second protective layer are located away from one side of the second touch trace layer, the first protective layer covers the projection of the touch electrode lines and the touch signal lines on the substrate substrate; the second protective layer covers the projection of the touch interface pattern on the substrate substrate.

2. The touch panel according to claim 1, wherein The display substrate further comprises a plurality of light emitting units in the display area, the light emitting units are used for emitting light; the touch panel further comprises a color film layer on the side of the touch layer away from the display substrate, the color film layer comprises: a black matrix, the black matrix is located in the display area and the first transition zone, part of the black matrix in the display area has a plurality of openings, and the plurality of openings correspond to the plurality of light emitting units; and a plurality of light filtering parts, the light filtering parts are located in the openings, and the light emitted by the light emitting units is emitted after passing through the light filtering parts.

3. The touch panel according to claim 2, wherein The second protective layer comprises a first protective part prepared by the same patterning process as the light filtering part; or, The second protective layer comprises a first protective part prepared by the same patterning process as the black matrix.

4. The touch panel according to claim 3, wherein The plurality of light emitting units comprise first light emitting units, second light emitting units and third light emitting units, the colors of the light emitted by the first light emitting units, the second light emitting units and the third light emitting units are different from each other; The plurality of light filtering parts comprise first light filtering parts corresponding to the first light emitting units, second light filtering parts corresponding to the second light emitting units, and third light filtering parts corresponding to the third light emitting units; The first protective part of the second protective layer and the first light filtering part are prepared by the same patterning process.

5. The touch panel according to claim 4, wherein The color of light emitted by the first light emitting unit is red, the color of light emitted by the second light emitting unit is green, and the color of light emitted by the third light emitting unit is blue. The first filter part is a red filter part, the second filter part is a green filter part, and the third filter part is a blue filter part.

6. The touch panel according to claim 3, wherein The peripheral region further comprises a second transition region between the bending region and the binding region; the touch control interface pattern comprises a lapping part and a non-lapping part, the lapping part is located in the binding region, and the non-lapping part is located in the second transition region; the lapping part is used to be connected with the driving circuit; The second protective layer further comprises an anisotropic conductive film, the anisotropic conductive film covers the lapping part, and the first protective part covers the non-lapping part.

7. The touch panel according to claim 2, wherein The first protective layer comprises a second protective part prepared by using the same patterning process as the filter part; The orthographic projection of the second protective part on the substrate substrate covers the orthographic projection of the touch control signal line on the substrate substrate.

8. The touch panel according to claim 2, wherein The first protective layer comprises a third protective part, and the third protective part and the black matrix are an integral structure. The orthographic projection of the third protective part on the substrate substrate covers the orthographic projection of the touch control signal line on the substrate substrate.

9. The touch panel according to claim 7 or 8, wherein, The first protective layer further comprises a first protective glue located in the display region and the first transition region, and a second protective glue located in the bending region. The first protective glue is a solid optical glue, and the second protective glue is a modified cyclo-olefin glue.

10. The touch panel according to any one of claims 3 to 6, wherein The first protective layer comprises a second protective part prepared by using the same patterning process as the filter part; the orthographic projection of the second protective part on the substrate substrate covers the orthographic projection of the touch control signal line on the substrate substrate. Alternatively, the first protective layer comprises a third protective part, and the third protective part and the black matrix are an integral structure. The orthographic projection of the third protective part on the substrate substrate covers the orthographic projection of the touch control signal line on the substrate substrate. The first protective layer further comprises a first protective glue located in the display region and the first transition region, and a second protective glue located in the bending region; the first protective glue is a solid optical glue, and the second protective glue is a modified cyclo-olefin glue.

11. The touch panel according to any one of claims 1 to 8, wherein The display substrate further comprises a first conductive insulating layer located on a side of the first conductive layer away from the substrate substrate; The first switching pattern is connected with the touch control signal line through a via hole in the first conductive insulating layer and the touch control insulating layer, and is further connected with the touch control interface pattern through another via hole in the first conductive insulating layer and the touch control insulating layer.

12. The touch panel according to any one of claims 1 to 8, wherein The first protective layer comprises a first protective glue located in the display region and the first transition region, and a second protective glue located in the bending region. The first protective glue is a liquid optical glue, and the second protective glue is a modified cyclo-olefin glue.

13. The touch panel according to any one of claims 1 to 8, wherein The first protective layer comprises a liquid optical glue located in the display region, the first transition region, and the bending region.

14. The touch panel according to claim 1, wherein The touch panel further comprises a polarizing layer on a side of the touch layer away from the display substrate, the polarizing layer being located in the display region and the first transition region; The first protective layer comprises pressure-sensitive adhesive between the polarizing layer and the touch layer, the pressure-sensitive adhesive being located in the display region and the first transition region; The first protective layer further comprises modified cyclic olefin adhesive in the bending region, a projection of the modified cyclic olefin adhesive on the substrate substrate and a projection of the pressure-sensitive adhesive on the substrate substrate partially overlap.

15. The touch panel according to any one of claims 1 to 10 and 12 to 14, wherein The display substrate further comprises a first conductive insulating layer on a side of the first conductive layer away from the substrate substrate; The first touch trace layer comprises a second transfer pattern in the second transition region, the first transfer pattern is connected with the touch signal line through the via in the first conductive insulating layer and the touch insulating layer, and the first transfer pattern is further connected with the second transfer pattern through the via in the first conductive insulating layer, the second transfer pattern and the touch interface pattern are in contact.

16. The touch panel according to any one of claims 1 to 10, and 12 to 14, wherein The display substrate further comprises a first conductive insulating layer, a second conductive layer and a second conductive insulating layer on a side of the first conductive layer away from the substrate substrate; The second conductive layer comprises a third transfer pattern in the second transition region, the first transfer pattern is connected with the touch signal line through the via in the first conductive insulating layer, the second conductive insulating layer and the touch insulating layer, and the first transfer pattern is further connected with the third transfer pattern through the via in the first conductive insulating layer, the third transfer pattern and the touch interface pattern are connected.

17. The touch panel according to any one of claims 1 to 16, wherein The display substrate comprises a light emitting circuit layer, a light emitting unit layer and an encapsulation layer stacked in a direction away from the substrate substrate; The light emitting circuit layer comprises an active layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source-drain layer, a first planar layer, a second source-drain layer and a second planar layer stacked in a direction away from the substrate substrate; The light emitting unit layer comprises an anode layer, a pixel defining layer, a light emitting layer and a cathode layer stacked in a direction away from the substrate substrate; The encapsulation layer comprises a first sub-encapsulation layer, a second sub-encapsulation layer and a third sub-encapsulation layer stacked in a direction away from the substrate substrate; The second source-drain layer is the first conductive layer.

18. The touch panel according to claim 17, wherein, The display substrate comprises a plurality of pixel units in the display region, the pixel unit comprises a light emitting circuit and a light emitting unit, the light emitting circuit layer comprises the light emitting circuit of the plurality of pixel units, the light emitting circuit comprises a plurality of thin film transistors and at least one storage capacitor, and the light emitting unit layer comprises the light emitting unit of the plurality of pixel units; The active layer comprises an active pattern of the plurality of thin film transistors, the active pattern comprises a source region and a drain region; The first gate layer includes a gate pattern of the plurality of thin film transistors and a first capacitor plate of the at least one storage capacitor, a normal projection of the gate pattern on the substrate and a part of the normal projection of the active pattern on the substrate are partially overlapped; The second gate layer includes a second capacitor plate of the at least one storage capacitor, a normal projection of the second capacitor plate on the substrate and a normal projection of the first capacitor plate on the substrate are at least partially overlapped; The first source-drain layer includes a source and a drain of the plurality of thin film transistors, the source is connected to a source region of the active pattern through a via hole in the interlayer dielectric layer, the second gate insulating layer and the first gate insulating layer, and the drain is connected to a drain region of the active pattern through a via hole in the interlayer dielectric layer, the second gate insulating layer and the first gate insulating layer; The second source-drain layer includes a first connecting part located in the display area and the first transition pattern located in the bending area, the first connecting part is connected to the drain through a via hole in the first planar layer; The anode layer includes a plurality of anode patterns of the plurality of light emitting units, the anode patterns are connected to the first connecting part through a via hole in the second planar layer; The pixel defining layer includes a plurality of hollow regions, the hollow regions expose at least part of the anode patterns; The light emitting layer includes a plurality of light emitting patterns of the plurality of light emitting units, the light emitting patterns are connected to the anode patterns through the hollow regions; A normal projection of the cathode layer on the substrate covers a normal projection of the plurality of light emitting patterns on the substrate, and the cathode layer is connected to the light emitting patterns of the plurality of light emitting units.

19. The touch panel according to claim 17, wherein, The light emitting circuit layer further includes a third source-drain layer and a third planar layer located on a side of the second planar layer away from the substrate; The third source-drain layer includes a second connecting part located in the display area, the second connecting part is connected to the first connecting part through a via hole in the second planar layer; the anode patterns are connected to the second connecting part through a via hole in the third planar layer; The third source-drain layer is a second conductive layer included in the touch panel.

20. A touch device, comprising: The touch device includes a power supply assembly and the touch panel according to any one of claims 1 to 19; The power supply assembly is connected to the touch panel and is configured to supply power to the touch panel.

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