WO2022241679A1 - 触控结构以及显示面板 - Google Patents

触控结构以及显示面板 Download PDF

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Publication number
WO2022241679A1
WO2022241679A1 PCT/CN2021/094676 CN2021094676W WO2022241679A1 WO 2022241679 A1 WO2022241679 A1 WO 2022241679A1 CN 2021094676 W CN2021094676 W CN 2021094676W WO 2022241679 A1 WO2022241679 A1 WO 2022241679A1
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WO
WIPO (PCT)
Prior art keywords
light
touch
segment
layer
overlapping portion
Prior art date
Application number
PCT/CN2021/094676
Other languages
English (en)
French (fr)
Inventor
贺兴龙
吴章敏
薄赜文
李硕
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to KR1020237014056A priority Critical patent/KR20240008293A/ko
Priority to CN202211511781.1A priority patent/CN115712360A/zh
Priority to JP2023525090A priority patent/JP2024518006A/ja
Priority to PCT/CN2021/094676 priority patent/WO2022241679A1/zh
Priority to EP21940136.1A priority patent/EP4206882A4/en
Priority to CN202180001213.4A priority patent/CN115643810A/zh
Priority to CN202110726472.5A priority patent/CN115377146A/zh
Priority to CN202110726490.3A priority patent/CN114792707A/zh
Priority to CN202121463129.8U priority patent/CN215834530U/zh
Priority to CN202121463152.7U priority patent/CN215578574U/zh
Priority to KR1020237002619A priority patent/KR20240009381A/ko
Priority to EP21922430.0A priority patent/EP4095924B1/en
Priority to JP2022558522A priority patent/JP2024503953A/ja
Priority to KR1020237000767A priority patent/KR20230132432A/ko
Priority to PCT/CN2021/128698 priority patent/WO2022242048A1/zh
Priority to CN202180016551.5A priority patent/CN115280511B/zh
Priority to EP24162937.7A priority patent/EP4362633A2/en
Priority to EP21926068.4A priority patent/EP4123716A4/en
Priority to PCT/CN2021/128699 priority patent/WO2022160840A1/zh
Priority to US17/796,490 priority patent/US20230354680A1/en
Priority to CN202310628774.8A priority patent/CN116916707A/zh
Publication of WO2022241679A1 publication Critical patent/WO2022241679A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/047—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using sets of wires, e.g. crossed wires
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • H10K59/1213—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements the pixel elements being TFTs
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/40—OLEDs integrated with touch screens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/60—OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes
    • H10K59/65—OLEDs integrated with inorganic image sensors

Definitions

  • Embodiments of the disclosure relate to a touch structure and a display panel.
  • touch structure used to realize the touch function includes a touch electrode structure, and the arrangement of the touch electrode structure affects the sensitivity and accuracy of the touch function, so it is an important factor affecting user experience.
  • At least one embodiment of the present disclosure provides a touch control structure, which includes a substrate and a plurality of touch units disposed on the substrate, wherein at least one of the plurality of touch units includes sequentially A first conductive layer, an insulating layer and a second conductive layer stacked on the substrate; the first conductive layer includes a first pattern formed by a plurality of first wirings spaced apart from each other, and the second The conductive layer includes a second pattern formed by a plurality of second traces spaced apart from each other, at least one of the plurality of first traces includes a first intersection overlapping at least one of the plurality of second traces.
  • At least one of the plurality of second traces includes a second overlapping portion overlapping with the first overlapping portion, and the first segment where the first overlapping portion is located is the same as the first overlapping portion
  • the second segment where the two overlapping parts are located has different extension directions, wherein the first segment is a line segment extending from the first routing with the first overlapping part as an end point, and the second segment is A line segment of the second trace extending with the second overlapping portion as an end point.
  • the first segment and the second segment include a straight line segment, and the extension direction of the first segment and the second segment is the direction of the straight line segment.
  • the extension direction, and/or the first segment and the second segment include an arc segment, and the extension direction of the first segment and the second segment is that the arc segment is at the first overlapping portion and the second overlapping portion is the extension direction of the tangent to the end point.
  • the size of one of the first overlapping portions in any direction is greater than or equal to the line width of the first trace perpendicular to its extending direction, and is less than or equal to the 2 times the line width of the first trace in the direction perpendicular to its extension; the size of one second overlapping portion in any direction is greater than or equal to the line width of the second trace in the direction perpendicular to its extension , less than or equal to twice the line width of the second wiring in a direction perpendicular to its extension.
  • the entirety of the first traces generally extends along the first direction, and the entirety of the second traces approximately extends along the second direction.
  • the angle between the first direction and the second direction is 30°-90°.
  • the touch structure provided by at least one embodiment of the present disclosure, at least one position where the first overlapping portion overlaps the second overlapping portion, the first overlapping portion and the second overlapping portion
  • the two overlapping parts are electrically connected through the via hole in the insulating layer.
  • the plurality of first wirings include at least one first connecting wiring, and the first intersection of the first connecting wirings
  • the overlapping portion is electrically connected to a second overlapping portion of at least part of the second routing lines among the plurality of second routing lines overlapping the first overlapping portion through a via hole in the insulating layer.
  • the second overlapping portions of any two adjacent second wirings are respectively electrically connected through the at least one first connecting wiring.
  • the at least one first connecting wire includes multiple first connecting wires, and the multiple first connecting wires are arranged at intervals; the multiple first connecting wires
  • the first routing also includes a plurality of second connecting routings, the plurality of second connecting routings are arranged at intervals from the first connecting routing; the plurality of second connecting routings and the plurality of first connecting routings A connecting wire and the plurality of second wires are insulated.
  • the touch control structure provided in at least one embodiment of the present disclosure further includes a touch driving circuit, wherein the first connecting wire is electrically connected to the touch driving circuit.
  • the first conductive layer further has a third segment connected to the plurality of first connecting wires and extending in a different direction.
  • the first end of the third segment is connected to the plurality of first connecting wires, and the second end of the third segment is connected to all adjacent
  • the plurality of second connection traces are spaced apart, and the minimum distance between them is 1 ⁇ m-6 ⁇ m.
  • the first conductive layer further has a fourth segment spaced from the plurality of first traces and extending in a different direction.
  • both ends of the fourth segment are spaced from the plurality of first traces, and the minimum distance between them is 1 ⁇ m-6 ⁇ m.
  • the line width of the plurality of first traces is 2 ⁇ m-4 ⁇ m.
  • the line width of the plurality of second traces is 2 ⁇ m-4 ⁇ m.
  • the plurality of touch units are arranged in an array.
  • At least one embodiment of the present disclosure further provides a display panel, including a display substrate and the above-mentioned touch structure, and the display substrate includes a base substrate, a driving circuit layer, a light emitting device layer, and a layer disposed on the base substrate in sequence.
  • the display panel provided in at least one embodiment of the present disclosure further includes: a black matrix layer disposed on the side of the touch structure away from the base substrate or on the side close to the base substrate, comprising a plurality of A first light-transmitting opening and a plurality of second light-transmitting openings, wherein the light-emitting device layer includes a plurality of light-emitting devices, and the plurality of first light-transmitting openings are configured to respectively pass light emitted by the plurality of light-emitting devices,
  • the driving circuit layer includes a plurality of light-transmitting parts, each of at least part of the second light-transmitting openings is arranged correspondingly to at least one of the plurality of light-transmitting parts, and the correspondingly arranged second light-transmitting openings and the light-transmitting openings In the light portion, the orthographic projection of the second light-transmitting opening on the base substrate at least partially overlaps the orthographic projection of the light-transmitting portion on the base
  • the plurality of second light-transmitting openings and the plurality of first wirings and/or the plurality of The distance between the second traces is greater than 1 ⁇ m.
  • the plurality of first light-transmitting openings and the plurality of first wirings and/or the plurality of The distance between the second traces is greater than 1 ⁇ m.
  • the plurality of first traces and the plurality of second traces are connected to the plurality of first traces.
  • the light-transmitting opening does not overlap with the plurality of second light-transmitting openings.
  • a first wiring or a second wiring is arranged between two adjacent second light transmitting openings among the plurality of second light transmitting openings.
  • the display substrate has a plurality of pixel units arranged in an array, each of the plurality of pixel units includes a plurality of sub-pixels, and each of the plurality of sub-pixels Each includes a pixel driving circuit arranged in the driving circuit layer and a light emitting device arranged in the light emitting device layer, and the light emitting device has a light emitting area; at least part of the plurality of light-transmitting parts are arranged in adjacent Between the light-emitting regions of the light-emitting devices of the sub-pixels.
  • the multiple first traces and the multiple second traces are connected to the multiple sub-pixels
  • the light emitting regions of the light emitting devices do not overlap.
  • At least one second light transmission opening among the plurality of second light transmission openings is located in the light emitting area of a sub-pixel.
  • a first wiring or a second wiring from the light-emitting area of the light-emitting device of the one sub-pixel to the first wiring or the second wiring adjacent to the at least one second light-transmitting opening
  • the distance between the two wirings is greater than the distance between the light emitting area of the light emitting device of the one sub-pixel and the other first wiring or the second wiring.
  • the plurality of pixel units includes at least one first pixel unit, and the plurality of sub-pixels included in the first pixel unit are perpendicular to the plurality of second light-transmitting openings.
  • the directions of the display substrates are one-to-one corresponding and overlapped.
  • the display panel provided by at least one embodiment of the present disclosure further includes a plurality of color filters respectively disposed in the plurality of first light-transmitting openings.
  • the display panel provided by at least one embodiment of the present disclosure further includes a textured touch surface and an image sensor array, wherein the image sensor array is disposed on the side of the driving circuit layer away from the light emitting device layer, and includes a plurality of An image sensor, the plurality of image sensors is configured to receive light emitted from the plurality of light-emitting devices in the light-emitting device layer and reflected by the texture on the textured touch surface, pass through the second light-transmitting opening and the The light through the light-transmitting part reaches the plurality of image sensors for texture collection.
  • the image sensor array is disposed on the side of the driving circuit layer away from the light emitting device layer, and includes a plurality of An image sensor, the plurality of image sensors is configured to receive light emitted from the plurality of light-emitting devices in the light-emitting device layer and reflected by the texture on the textured touch surface, pass through the second light-transmitting opening and the The light through the light-transmitting part reaches the
  • FIG. 1 is a schematic plan view of a self-capacitive touch structure
  • FIG. 2 is a schematic plan view of a first touch layer of a self-capacitive touch structure
  • FIG. 3 is a schematic plan view of a second touch layer of a self-capacitive touch structure
  • FIG. 4 is a schematic plan view of a first touch layer and a second touch layer stack of a self-capacitive touch structure
  • FIG. 5 is a schematic plan view of a touch structure provided by at least one embodiment of the present disclosure.
  • FIG. 6 is a schematic plan view of a first conductive layer of a touch control structure provided by at least one embodiment of the present disclosure
  • FIG. 7 is a schematic plan view of a second conductive layer of a touch control structure provided by at least one embodiment of the present disclosure.
  • FIG. 8 is a schematic plan view of a first conductive layer and a second conductive layer laminate of a touch control structure provided by at least one embodiment of the present disclosure
  • FIG. 9 is a schematic cross-sectional view of the touch structure in FIG. 8 along line A-A;
  • FIG. 10 is a partial plan view of a display panel provided by at least one embodiment of the present disclosure.
  • FIG. 11 is a schematic cross-sectional view of a sub-pixel of a display panel provided by at least one embodiment of the present disclosure.
  • OLED display panels have the characteristics of self-illumination, high contrast, low energy consumption, wide viewing angle, fast response speed, can be used for flexible panels, wide operating temperature range, simple manufacturing, etc., and have broad development prospects. In order to meet the diverse needs of users, it is of great significance to integrate multiple functions in the display panel, such as a touch function, a fingerprint recognition function, and the like. For example, forming an on-cell touch structure in an OLED display panel is an implementation method, which realizes the touch function of the display panel by forming the touch structure on the packaging film of the OLED display panel. .
  • the touch structure can be divided into resistive, capacitive, surface acoustic wave, and infrared.
  • the capacitive touch structure has high accuracy and strong anti-interference ability, so it is widely used.
  • the capacitive touch structure is mainly divided into mutual capacitance (mutual capacitance) touch structure and self capacitance (self capacitance) touch structure.
  • mutual capacitance mutual capacitance
  • self capacitance self capacitance
  • the self-capacitance structure is a self-capacitance formed by the touch electrode and the human body or the ground, and the position detection is performed by using the change of the self-capacitance.
  • the self-capacitive touch structure has the characteristics of low power consumption and simple structure, and is widely used in various display panels.
  • FIG. 1 shows a schematic plan view of a self-capacitive touch structure.
  • the self-capacitive touch structure has a plurality of touch units T1, T2, etc. arranged T1 and T2 are respectively connected to the touch chip IC through a plurality of touch traces L1 and L2.
  • each touch unit it has a laminated first touch layer, a second touch layer, and a touch insulating layer between the first touch layer and the second touch layer.
  • FIG. 2 shows a schematic plan view of the first touch layer
  • FIG. 3 shows a schematic plan view of the second touch layer
  • FIG. 4 shows a schematic plan view of the stack of the first touch layer and the second touch layer. .
  • the second touch layer has a metal network structure, which can be used as a touch sensing structure.
  • the finger When a finger touches the touch structure, the finger will form a capacitance with a certain metal line in the metal network structure, thereby By changing the capacitance formed between the original metal network structure and the ground, the touch chip IC can detect the position where the capacitance changes, and then determine the position touched by the finger.
  • the first touch layer can be used as a wiring layer, including multiple touch wiring lines, and can connect multiple touch units to touch ICs respectively.
  • the wiring lines in the first touch layer and the second touch layer completely overlap, so the overlapping position OP will produce a large Parasitic capacitance, resulting in poor touch effect.
  • the touch traces in the first touch layer are arranged in the vertical direction as a whole. Under strong light, users can easily see the traces in the first touch layer from the surface of the touch structure. , the pattern of the first touch layer is highly visualized and the user experience is poor.
  • At least one embodiment of the present disclosure provides a touch control structure
  • the touch control structure includes a substrate and a plurality of touch units disposed on the substrate, wherein at least one of the plurality of touch units includes sequentially stacked A first conductive layer, an insulating layer and a second conductive layer on the substrate; the first conductive layer includes a first pattern formed by a plurality of first wirings spaced apart from each other, and the second conductive layer includes a plurality of first wirings spaced apart from each other.
  • a second pattern formed by a plurality of second routings at least one of the plurality of first routings includes a first overlapping portion overlapping with at least one of the plurality of second routings, at least one of the plurality of second routings
  • One includes a second overlapping portion that overlaps the first overlapping portion, and the first section where the first overlapping portion is located and the second section where the second overlapping portion is located have different extension directions, wherein the first section is a line segment of the first routing extending with the first overlapping portion as the endpoint, and the second segment is a line segment of the second routing extending with the second overlapping portion as the endpoint.
  • the first section of the plurality of first traces and the second section of the plurality of second traces have different line extension directions. Therefore, when overlapping, the plurality of first traces The first overlapping portion of a trace overlaps with the second overlapping portions of multiple second traces in a “dot-like” manner, and has a small overlapping area. Therefore, multiple first traces and multiple second traces The wiring does not generate parasitic capacitance or the generated parasitic capacitance is very small and negligible, thereby improving the touch precision and touch sensitivity of the touch structure, thereby improving the touch effect and improving user experience.
  • FIG. 5 shows a schematic plan view of the touch structure
  • FIG. 6 shows a schematic plan view of the first conductive layer of the touch unit in the touch structure
  • FIG. 7 shows A schematic plan view of the second conductive layer in the touch unit is shown
  • FIG. 8 shows a schematic diagram of the stack of the first conductive layer and the second conductive layer in the touch unit.
  • FIG. 9 shows the touch unit in FIG. 8 along A-A Schematic diagram of a cross section of a line.
  • the touch structure includes a substrate B and a plurality of touch units T11, T12 and T13 arranged on the substrate B, and the plurality of touch units T11, T12 and T13 are arranged in an array Arrangement, for example, the overall shape of each touch unit may be block, for example, the planar shape of each touch unit is rectangle or square.
  • These touch units T11, T12, and T13 are arranged at intervals, and are electrically connected to the touch drive circuit D through a plurality of touch traces L11, L12, and L13, respectively, so as to transmit electrical signals to the touch drive circuit D or transmit electrical signals from the touch drive circuit D. Circuit D acquires the electrical signal.
  • At least one (for example, each) of the plurality of touch units includes a first conductive layer M1 , an insulating layer I and a second conductive layer M2 stacked on the substrate B in sequence.
  • the first conductive layer M1 includes a first pattern formed by a plurality of first wires 11 spaced apart from each other
  • the second conductive layer M2 includes a second pattern formed by a plurality of second wires 12 spaced apart from each other.
  • at least one (for example, each) of the plurality of first traces 11 includes a first overlapping portion 111 that overlaps with at least one of the plurality of second traces 12.
  • At least one (for example, each) of the second traces 12 includes a second overlapping portion 112 overlapping with the first overlapping portion 111, and the first segment 112 where the first overlapping portion 111 is located (in FIG. 6
  • the part circled by the dotted line box) and the second section 122 where the second overlapping portion 121 is located have different extension directions.
  • the part of the first overlapping portion 111, that is, the first section 112 is a line segment extending from the first overlapping portion 111 of the first wiring 11, and the second section 122 is a section of the second wiring 12 including the second intersection.
  • the part of the overlapping portion 121 that is, the second segment 112 is a line segment of the second trace 12 extending with the second overlapping portion 121 as an end point.
  • the multiple first traces 11 overlaps with the second overlapping portion 121 of the plurality of second traces 12 in a “dot-like” manner, and has a small overlapping area. Therefore, the plurality of first traces 11 and the plurality of second traces The trace 12 does not generate parasitic capacitance or the generated parasitic capacitance is so small that it can be ignored, thereby improving the touch precision and touch sensitivity of the touch structure, thereby improving the touch effect and user experience.
  • the first section 112 and the second section 122 include a straight section, at this time, the extension direction of the first section 112 and the second section 122 is the extension direction of the straight section, or the first section 112 and the second section 122 include an arc
  • the extension direction of the first segment 112 and the second segment 122 is the extension direction of the tangent line of the arc segment whose endpoints are the first overlapping portion 111 and the second overlapping portion 121 .
  • the extension direction of the first segment 112 is the extension direction of the dotted line in FIG. 6 .
  • the extension direction of the second segment 122 is the extension direction of the dotted line in FIG. 7 .
  • the first overlapping portion 111 and the second overlapping portion 121 overlap, the first overlapping portion 111 and the second overlapping portion 121 are insulated by a spacer. Vias I1 in layer I are electrically connected.
  • the size of a first overlapping portion 111 in any direction is greater than or equal to the line width of the first trace 11 perpendicular to its extending direction and less than or equal to the line width of the first trace 11 perpendicular to its extending direction.
  • the size of a second overlapping portion 121 in any direction is greater than or equal to the line width of the second wiring 12 perpendicular to its extending direction, and less than or equal to the line width of the second wiring 12 perpendicular to its extending direction 2 times. This ensures the reliability of the electrical connection between the first overlapping portion 111 and the second overlapping portion 121 .
  • the first wiring 11 is bent and extended generally along the first direction (the vertical direction in the figure), and as shown in FIG. 7, the second wiring 12 is generally extended along the second direction (the the lower right direction) to bend and extend.
  • the angle between the first direction and the second direction is 30°-90°, such as 45°, 60°, or 70°. Therefore, when the touch control structure is arranged on the display panel, the above-mentioned design of the multiple first wires 11 and the multiple second wires 12 can make the multiple first wires 11 and the multiple second wires 12
  • the extended position avoids the light-emitting areas of the multiple sub-pixels in the display panel, thereby avoiding affecting the display effect of the multiple sub-pixels.
  • the extension direction of the first wiring or the second wiring as a whole refers to, when viewing the first conductive layer and the second conductive layer as a whole, the first wiring or the second wiring The macroscopic extension direction of the trace as a whole.
  • the multiple first wires 11 include at least one (for example, multiple) first connecting wires 11A, and the first overlapping portion 111 of the first connecting wires 11A
  • the second overlapping portion 121 is electrically connected to at least part of the second wiring 12 among the plurality of second wirings 12 overlapping the first overlapping portion through the via hole I in the insulating layer.
  • the multiple first overlapping portions 111 of the multiple first connecting traces 11A are respectively electrically connected to the second overlapping portions 121 of two adjacent second traces 12 through the via holes I in the insulating layer. , so as to electrically connect two adjacent second wires 12 , as shown in FIG. 8 .
  • the second overlapping portions 121 of any two adjacent second wirings 12 are respectively electrically connected through at least one of the first connecting wirings 11A.
  • the second overlapping portions 121 of partially adjacent two second wirings 12 are respectively electrically connected through the same first connecting wiring 11A, or, the second overlapping portions 121 of partially adjacent two second wirings 12
  • the stacked parts 121 are electrically connected through different first connection wires 11A respectively.
  • all the second wires 12 can be electrically connected together through a plurality of first connecting wires 11A to form a touch sensing line of the touch unit for sensing touch operations.
  • the multiple first connecting wires 11A included in the multiple first wires 11 are used to electrically connect the multiple second wires 12, so the multiple first connecting wires 11A and A plurality of second wires 12 together form a touch sensing line of the touch unit for sensing touch operations.
  • the multiple first connecting wires 11A are arranged at intervals, for example, the multiple first connecting wires 11A are arranged among the multiple first wires 11 at intervals.
  • the multiple first wires 11 further include multiple second connecting wires 11B, and the multiple second connecting wires 11B are spaced apart from the first connecting wires 11A, for example, multiple second The connecting wires 11B are respectively arranged between adjacent first connecting wires 11A, and multiple second connecting wires 11B can be used as touch wires of multiple touch control units.
  • the touch control unit shown in FIGS. 6-8 can be the touch control unit T13 in FIG. Lines L11, L12.
  • the multiple second connecting wires 11B are insulated from the multiple first connecting wires 11A and the multiple second wires 12, that is, in the first conductive layer, the multiple second connecting wires 11B are insulated from the multiple first There is a space between the connecting wires 11A.
  • the touch control structure may further include a touch drive circuit D, and the first connecting wire 11A is electrically connected to the touch drive circuit D.
  • the touch driving circuit D may be any form of control circuit such as a touch chip.
  • the first conductive layer M1 may also have a third section 113 connected to a plurality of first connecting wires 11A and extending in a different direction, for example, the extension of the third section 113 The direction is perpendicular to the first direction.
  • the third segment 113 can be used as a part of the first connecting wire 11A, and together with the plurality of second wires 12 can be used as a touch sensing line for sensing a touch operation. Therefore, the arrangement of the third segment 113 expands the extension range of the touch sensing line, thereby improving the touch precision and touch sensitivity of the touch structure.
  • the first end of the third segment 113 is connected to a plurality of first connection traces 11A, and the second end of the third segment 113 is connected to a plurality of adjacent second connections.
  • the traces 11 are spaced apart, and the minimum distance G1 of the space is 1 ⁇ m-6 ⁇ m, such as 1 ⁇ m, 2 ⁇ m, 3 ⁇ m, 4 ⁇ m, 4.5 ⁇ m, 5 ⁇ m or 5.5 ⁇ m, etc., so that the third segment 113 can be realized to have a longer extension length.
  • a sufficient safety distance between the first connecting wire 11A and the second connecting wire 11B can be maintained to maintain insulation.
  • the first conductive layer M1 may further have a fourth segment 114 spaced apart from the plurality of first traces 11 and extending in a different direction.
  • the extending direction of the fourth segment 114 is the same as the extending direction of the third segment 113 .
  • both ends of the fourth segment 114 are spaced from the plurality of first traces 11, and the minimum distances G2 and G3 between them are 1 ⁇ m-6 ⁇ m, for example, 1 ⁇ m, 2 ⁇ m, 3 ⁇ m, 4 ⁇ m, 4.5 ⁇ m, 5 ⁇ m or 5.5 ⁇ m. ⁇ m etc.
  • the fourth segment 114 is used as a virtual line and is not connected to any circuit structure.
  • the setting of the fourth segment 114 can make the pattern of the first conductive layer M1 uniform, and can maintain the The etching uniformity of the pattern of the first conductive layer M1 makes the first conductive layer M1 have higher preparation precision, and makes the visual effect of the whole surface of the prepared first conductive layer M1 more uniform.
  • the multiple second traces 12 may further have fifth segments 123 connected to the second segments 122 of the multiple second traces 12 and extending in different directions.
  • the extending direction of the fifth segment 123 intersects with the second direction, for example, is perpendicular.
  • the fifth segment 123 does not overlap with the plurality of first traces 11 .
  • the fifth section 123 can expand the extending range of the plurality of second wires 12 to serve as touch sensing lines, thereby improving the touch precision and touch sensitivity of the touch structure.
  • the line width (ie, the dimension perpendicular to the extending direction of the lines) of the plurality of first lines 11 may be 2 ⁇ m-4 ⁇ m, such as 2.5 ⁇ m, 3 ⁇ m or 3.5 ⁇ m.
  • the line width of the plurality of second wires 12 may be 2 ⁇ m-4 ⁇ m, such as 2.5 ⁇ m, 3 ⁇ m or 3.5 ⁇ m.
  • the line widths of the multiple first traces 11 and the multiple second traces 12 may be the same or different.
  • the first conductive layer M1 and the second conductive layer M2 of the touch control structure may be metal layers or transparent conductive layers, and their materials may include metal materials such as copper and aluminum or transparent materials such as ITO and IZO.
  • the substrate B may include an inorganic insulating material such as silicon oxide, silicon nitride, or silicon oxynitride, or an organic insulating material such as polyimide.
  • the spacer insulating layer I may also include inorganic insulating materials such as silicon oxide, silicon nitride or silicon oxynitride, or organic insulating materials such as polyimide. For example, as shown in FIG.
  • the second conductive layer M2 of the touch control structure can also be covered with a protective insulating layer P, and the protective insulating layer P can also include inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride, or poly organic insulating material such as imide to protect the second conductive layer M2.
  • the protective insulating layer P can also include inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride, or poly organic insulating material such as imide to protect the second conductive layer M2.
  • Embodiments of the present disclosure do not specifically limit other structures and materials of the touch structure.
  • At least one embodiment of the present disclosure also provides a display panel, which includes a display substrate and a touch structure provided by an embodiment of the present disclosure.
  • FIG. 10 shows a partial plan view of the display panel
  • FIG. 10 shows
  • the touch structure in FIG. 5 is the part of the touch structure in the dotted line box
  • FIG. 11 shows a partial cross-sectional schematic diagram of a sub-pixel of the display panel.
  • the display substrate includes a base substrate 1011 and a driving circuit layer, a light emitting device layer, and an encapsulation layer EN arranged on the base substrate 1011 in sequence; On one side, at this time, the first conductive layer M1 is closer to the encapsulation layer EN than the second conductive layer M2.
  • the display substrate has a plurality of pixel units arranged in an array for display operation.
  • Each of the plurality of pixel units includes a plurality of sub-pixels, each of the plurality of sub-pixels includes a pixel driving circuit disposed in the driving circuit layer and a light emitting device EM disposed in the light emitting device layer, the light emitting device EM has a light emitting area LE .
  • the pixel driving circuit includes structures such as a thin film transistor T and a storage capacitor C.
  • the thin film transistor T includes an active layer 1021, a gate 1022, a gate insulating layer 1014 (for example, including a first gate insulating layer 1014A and a second gate insulating layer 1014B), an interlayer insulating layer 1015 and Source and drain electrodes (including source 1023 and drain 1024).
  • the storage capacitor C includes a first plate 1031 and a second plate 1032 .
  • the first electrode plate 1031 and the gate electrode 1022 are arranged in the same layer, and the second electrode plate 1032 is between the gate insulating layer 1014 and the interlayer insulating layer 1015 .
  • setting two structural layers or functional layers on the same layer means that the two structural layers or functional layers can use the same material layer and use the same manufacturing process (such as patterning process, etc.) Formed, so that the preparation process of the display substrate can be simplified.
  • the pixel driving circuit can be formed into a structure such as 2T1C (two thin film transistors and one storage capacitor), 6T1C (six thin film transistors and one storage capacitor), thereby including a plurality of thin film transistors.
  • 11 only shows the thin film transistor directly connected to the light emitting device, the thin film transistor may be a driving thin film transistor, or a light emitting control thin film transistor, etc.
  • the display substrate may further include a planarization layer 1016 , a pixel defining layer 1017 and spacers 1018 .
  • the planarization layer 1016 is used to planarize the pixel driving circuit.
  • the pixel defining layer 1017 is disposed on the side of the planarizing layer 1016 away from the pixel driving circuit.
  • the pixel defining layer 1017 includes a plurality of sub-pixel openings for defining the light emitting regions LE of the plurality of sub-pixels. .
  • the light emitting device EM includes an anode layer 1041 , a light emitting layer 1042 and a cathode layer 1043 .
  • the anode layer 1041 is connected to the source 1023 of the thin film transistor T through a via hole in the planarization layer 1016 .
  • the cathode layer 1043 is formed on the entire surface of the base substrate 1011 .
  • between the anode layer 1041 and the light-emitting layer 1042 and between the cathode layer 1043 and the light-emitting layer 1042 may also include an auxiliary light-emitting layer (not shown) that helps the light-emitting layer 1042 to emit light, such as including One or more of the electron transport layer, electron injection layer, hole transport layer and hole injection layer are not shown in the figure.
  • the display substrate can further include a buffer layer 1012 disposed on the base substrate 1011.
  • the buffer layer 1012 can provide a flat surface and prevent impurities such as water and oxygen from coming from the substrate.
  • the base substrate 1011 penetrates into functional structures such as the pixel driving circuit, so as to protect other functional structures on the base substrate 1011 .
  • the display panel may further include a black matrix layer BM, and the black matrix layer BM is disposed on the side of the touch structure away from the base substrate 1011 (the situation shown in the figure) Or the side close to the base substrate 1011 .
  • the black matrix layer BM includes a plurality of first light transmission openings BM1 and a plurality of second light transmission openings BM2.
  • the plurality of first light-transmitting openings BM1 are configured to respectively pass the light emitted by the plurality of light emitting devices EM.
  • the orthographic projections of the plurality of first light-transmitting openings BM1 on the base substrate 1011 are respectively at least partially overlapped, for example completely overlapped, with the orthographic projections of the light emitting regions LE of the plurality of light emitting devices EM on the base substrate 1011 .
  • each pixel unit includes one red sub-pixel, one blue sub-pixel and two green sub-pixels.
  • the plurality of first light-transmitting openings BM1 include a first light-transmitting opening R corresponding to the light-emitting device of the red sub-pixel, and a first light-transmitting opening B corresponding to the light-emitting device of the blue sub-pixel.
  • the first light-transmitting opening G of the light-emitting device corresponding to the green sub-pixel.
  • the driving circuit layer includes a plurality of light-transmitting portions TP, and each of at least part of the second light-transmitting openings BM2 corresponds to at least one of the plurality of light-transmitting portions TP.
  • the orthographic projection of the second light-transmitting opening BM2 on the base substrate 1011 and the orthographic projection of the light-transmitting portion TP on the base substrate 1011 are at least partially overlapping.
  • the second light-transmitting opening BM2 and the light-transmitting portion TP can be used for passing sensing light, such as sensing light for texture recognition, etc., which will be described in detail later.
  • the light-transmitting portion TP is disposed between the light-emitting regions LE of the light-emitting devices EM of adjacent sub-pixels.
  • a plurality of light-transmitting portions TP are respectively disposed between pixel driving circuits of adjacent sub-pixels.
  • the plurality of pixel units includes at least one first pixel unit, and the plurality of sub-pixels included in the first pixel unit correspond to and overlap with the plurality of second light-transmitting openings in a direction perpendicular to the display substrate.
  • the plurality of pixel units are all first pixel units, at this time, each sub-pixel in the display panel corresponds to a second light transmission opening BM2.
  • the plurality of second light-transmitting openings BM2 include second light-transmitting openings B1, second light-transmitting openings B2, second The light-transmitting opening B3 and the second light-transmitting opening B4.
  • the shapes and sizes of the second light-transmitting opening B1 , the second light-transmitting opening B2 , the second light-transmitting opening B3 and the second light-transmitting opening B4 are different.
  • the plurality of first traces 11 and the plurality of second traces 12 and the plurality of first light-transmitting openings BM1 does not overlap with the plurality of second light-transmitting openings BM2.
  • a plurality of first light-transmitting openings BM1 and a plurality of first wires 11 and/or Or the distance H1 of the plurality of second wires 12 is greater than 1 ⁇ m, for example greater than 2.5 ⁇ m, for example H1 is 3 ⁇ m or 3.5 ⁇ m.
  • the distance H2 between the plurality of second light-transmitting openings BM2 and the plurality of first traces 11 and/or the plurality of second traces 12 is also greater than 1 ⁇ m, for example greater than 2.5 ⁇ m, for example H2 is 3 ⁇ m or 3.5 ⁇ m.
  • the distance between the plurality of first light-transmitting openings BM1 and the plurality of second light-transmitting openings BM2 and the plurality of first wirings 11 and the plurality of second wirings 12 is far enough, and the plurality of first wirings 11 and the plurality of second wirings 12
  • the second wires 12 are fully blocked by the black matrix layer BM, so that even under strong light, the user will not see the multiple first wires 11 and the multiple second wires 12 from the surface of the display panel, which improves the The user's visual experience.
  • a first wiring 11 or a second wiring is arranged between two adjacent second light-transmitting openings BM2 among the plurality of second light-transmitting openings BM2 12.
  • a first wiring 11 is provided between the second light transmission opening B1 and the second light transmission opening B2
  • a first wiring 11 is provided between the second light transmission opening B2 and the second light transmission opening B3.
  • a second wiring 12, a first wiring 11 is arranged between the second light-transmitting opening B3 and the second light-transmitting opening B4.
  • the plurality of second light-transmitting openings BM2 are evenly arranged among the plurality of first wirings 11 and the plurality of second wirings 12 , which contributes to the uniformity of the display panel.
  • the plurality of first wirings 11 and the plurality of second wirings 12 do not overlap with the light-emitting areas LE of the light-emitting devices EM of the multiple sub-pixels, thereby avoiding affecting the power of the multiple sub-pixels. display effect.
  • At least one second light transmission opening BM2 among the plurality of second light transmission openings BM2 is located in a sub-pixel Between the light-emitting area LE of the light-emitting device of the sub-pixel and a first wiring 11 or a second wiring 12, the light-emitting area LE of the light-emitting device of the one sub-pixel reaches the second adjacent to the at least one second light-transmitting opening BM2 The distance between one wiring 11 or the second wiring 12 is greater than the distance between the light emitting area LE of the light emitting device of the one sub-pixel and the other first wiring 11 or the second wiring 12 .
  • the second light-transmitting opening B2 is located between the light-emitting area LE of the light-emitting device of the blue sub-pixel and a second line.
  • the distance H3 from the light-emitting area LE of the light-emitting device of the blue sub-pixel to the second wiring 12 adjacent to the second light-transmitting opening B2 is greater than the distance H3 from the light-emitting area of the light-emitting device of the blue sub-pixel to other lines.
  • the distance H4 between the first wiring 11 or the second wiring 12 is greater than the distance H3 from the light-emitting area of the light-emitting device of the blue sub-pixel to other lines.
  • the first light-transmitting opening BM1, the second light-transmitting opening BM2, the plurality of first traces 11 and the plurality of second traces 12 are evenly arranged in the display panel, so as to avoid the interaction between the display function and the touch function in the display panel. influence, and improve the display effect and touch effect of the display panel.
  • the display panel may further include a plurality of color filters CF disposed in the plurality of first light transmission openings BM1 respectively.
  • the plurality of color filters CF includes a plurality of filters of different colors, so as to respectively correspond to light-emitting devices of sub-pixels of different colors.
  • the color of the correspondingly arranged sub-pixel is the same as that of the color filter CF, so that after the light emitted from the light-emitting device of the sub-pixel passes through the color filter CF, the color of the emitted light is more pure, so that the display of the display panel Better results.
  • the display panel may further include a textured touch surface S1 and an image sensor array SA.
  • the image sensor SA array is disposed on the side of the driving circuit layer away from the light emitting device layer, including a plurality of The image sensor S2, the multiple image sensors S2 are configured to receive light emitted from the multiple light-emitting devices EM in the light-emitting device layer and reflected by the textures (such as fingerprints or palmprints, etc.) on the textured touch surface S1, and pass through the second light-transmitting
  • the opening BM2 and the light-transmitting portion TP reach the light of the plurality of image sensors S2 for texture collection. Therefore, the display panel also has a texture recognition function.
  • the image sensor SA can be arranged on the side of the base substrate 1011 away from the driving circuit layer, so it can be attached to the base substrate 1011 after the display substrate is prepared during the manufacturing process, so as not to Affects the manufacturing process of the display substrate.
  • the display panel may further include a transparent cover CV disposed on a side of the black matrix layer BM away from the base substrate 1011 .
  • the surface of the transparent cover CV is formed as a textured touch surface S1.
  • the transparent cover CV may be a glass cover.
  • the display substrate may be a flexible display substrate, and at this time, the base substrate 1011 may include flexible insulating materials such as polyimide (PI).
  • the base substrate 1011 may be a laminated structure in which multiple flexible layers and multiple barrier layers are alternately arranged, for example, a laminated structure in which two flexible layers and two barrier layers are alternately arranged.
  • the flexible layer may include polyimide
  • the barrier layer may include inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride.
  • the display substrate may also be a rigid substrate, and in this case, the base substrate 1011 may be a rigid substrate such as glass or quartz.
  • the buffer layer 1012 can be made of inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride
  • the active layer 1021 can be made of materials such as polysilicon and metal oxide
  • the gate insulating layer 1014 can be Inorganic insulating materials such as silicon oxide, silicon nitride, or silicon oxynitride are used, and metal materials such as copper, aluminum, titanium, and cobalt can be used for the grid 1022 and the first plate 1031, and can be formed, for example, in a single-layer structure or a multi-layer structure.
  • the second plate 1032 can be made of copper, aluminum, titanium, cobalt and other metals or alloy materials
  • the interlayer insulating layer 1015 can be made of silicon oxide, silicon nitride Or inorganic insulating materials such as silicon oxynitride
  • the source and drain electrodes 1023 and 1024 can be metal materials such as copper, aluminum, titanium, cobalt, for example, can be formed into a single-layer structure or a multi-layer structure, such as titanium/aluminum/titanium, molybdenum/aluminum / molybdenum and other multilayer structures
  • the material of the anode layer 1041 may include metal oxides such as ITO and IZO or metals such as Ag, Al and Mo or their alloys.
  • the material of the light-emitting layer 1042 and the auxiliary light-emitting layer are organic materials, and the material of the light-emitting layer 1042 can be selected to emit a certain color of light (such as red light, blue light or green light, etc.) according to requirements.
  • the material of the cathode layer 1043 may include metals such as Mg, Ca, Li or Al or alloys thereof, or metal oxides such as IZO and ZTO, or PEDOT/PSS (poly 3,4-ethylenedioxythiophene/polystyrenesulfonic acid Salt) and other organic materials with conductive properties.
  • the planarization layer 1016 , the pixel defining layer 1017 and the spacers 1018 can be made of organic insulating materials such as polyimide.
  • the encapsulation layer EN is a composite encapsulation layer, including a first inorganic encapsulation layer 1051 , a first organic encapsulation layer 1052 and a second inorganic encapsulation layer 1053 which are sequentially stacked.
  • the first inorganic encapsulation layer 1051 and the second inorganic encapsulation layer 1053 can be formed of inorganic materials such as silicon nitride, silicon oxide, silicon oxynitride, etc.
  • the first organic encapsulation layer 1052 can be formed of polyimide (PI), epoxy Formed of organic materials such as resins.
  • PI polyimide
  • the composite encapsulation layer can form multiple protections for the functional structure on the display panel, and has a better encapsulation effect.
  • the embodiments of the present disclosure do not specifically limit the materials of various functional structures on the display panel.

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Abstract

一种触控结构和显示面板，该触控结构包括衬底（B）和设置在衬底（B）上的多个触控单元（T11/T12/T13），多个触控单元（T11/T12/T13）中的至少一个包括依次叠层在衬底（B）上的第一导电层（M1）、间隔绝缘层（I）和第二导电层（M2）；第一导电层（M1）包括由彼此间隔的多条第一走线（11）形成的第一图案，第二导电层（M2）包括由彼此间隔的多条第二走线（12）形成的第二图案，多条第一走线（11）中的至少一个包括与多条第二走线（12）至少之一交叠的第一交叠部（111），多条第二走线（12）中的至少一个包括与第一交叠部（111）交叠的第二交叠部（121），且第一交叠部（111）所在的第一段（112）与第二交叠部（121）所在的第二段（122）具有不同的延伸方向，第一段（112）为第一走线（11）的以第一交叠部（111）为端点延伸的线段，第二段（122）为第二走线（12）的以第二交叠部（122）为端点延伸的线段。该触控结构具有较高的触控精度与触控灵敏度。

Description

触控结构以及显示面板 技术领域
本公开的实施例涉及一种触控结构以及显示面板。
背景技术
具有触控功能的用户界面被广泛地应用在各类电子装置中，例如手机、平板电脑等显示装置中。用于实现触控功能的触控结构包括触控电极结构，触控电极结构的设置影响到触控功能的灵敏度以及准确性，因此是影响用户体验的重要因素。
发明内容
本公开至少一实施例提供一种触控结构，该触控结构包括衬底和设置在所述衬底上的多个触控单元，其中，所述多个触控单元中的至少一个包括依次叠层在所述衬底上的第一导电层、间隔绝缘层和第二导电层；所述第一导电层包括由彼此间隔的多条第一走线形成的第一图案，所述第二导电层包括由彼此间隔的多条第二走线形成的第二图案，所述多条第一走线中的至少一个包括与所述多条第二走线至少之一交叠的第一交叠部，所述多条第二走线中的至少一个包括与所述第一交叠部交叠的第二交叠部，且所述第一交叠部所在的第一段与所述第二交叠部所在的第二段具有不同的延伸方向，其中，所述第一段为所述第一走线的以所述第一交叠部为端点延伸的线段，所述第二段为所述第二走线的以所述第二交叠部为端点延伸的线段。
例如，本公开至少一实施例提供的触控结构中，所述第一段和所述第二段包括直线段，所述第一段和所述第二段的延伸方向为所述直线段的延伸方向，和/或所述第一段和所述第二段包括弧线段，所述第一段和所述第二段的延伸方向为所述弧线段在所述第一交叠部和第二交叠部为端点的切线的延伸方向。
例如，本公开至少一实施例提供的触控结构中，一个所述第一交叠部在任一方向上的尺寸，大于等于所述第一走线在垂直于其延伸方向的线宽，小于等于所述第一走线在垂直于其延伸方向上的线宽的2倍；一个所述第二交叠部在任一方向上的尺寸，大于等于所述第二走线在垂直于其延伸方向的线宽，小于等于所述第二走线在垂直于其延伸方向上的线宽的2倍。
例如，本公开至少一实施例提供的触控结构中，所述第一走线整体大致沿着第一方向延伸，所述第二走线整体大致沿着第二方向延伸。
例如，本公开至少一实施例提供的触控结构中，所述第一方向和所述第二方向之间的角度为30°-90°。
例如，本公开至少一实施例提供的触控结构中，在至少一处所述第一交叠部与所述第二交叠部交叠的位置，所述第一交叠部和所述第二交叠部通过所述间隔绝缘层中的过 孔电连接。
例如，本公开至少一实施例提供的触控结构中，在一个触控单元中，所述多条第一走线包括至少一条第一连接走线，所述第一连接走线的第一交叠部与交叠于所述第一交叠部的多个第二走线中的至少部分第二走线的第二交叠部通过所述间隔绝缘层中的过孔电连接。
例如，本公开至少一实施例提供的触控结构中，任意相邻的两条第二走线的第二交叠部分分别通过所述至少一条第一连接走线电连接。
例如，本公开至少一实施例提供的触控结构中，所述至少一条第一连接走线包括多条第一连接走线，所述多条第一连接走线间隔排布；所述多条第一走线还包括多条第二连接走线，所述多条第二连接走线与所述第一连接走线间隔排布；所述多条第二连接走线与所述多条第一连接走线以及所述多条第二走线绝缘。
例如，本公开至少一实施例提供的触控结构还包括触控驱动电路，其中，所述第一连接走线与触控驱动电路电连接。
例如，本公开至少一实施例提供的触控结构中，所述第一导电层还具有与所述多条第一连接走线连接且延伸方向不同的第三段。
例如，本公开至少一实施例提供的触控结构中，所述第三段的第一端与所述多条第一连接走线连接，所述第三段的第二端与相邻的所述多条第二连接走线间隔，且间隔的最小距离为1μm-6μm。
例如，本公开至少一实施例提供的触控结构中，所述第一导电层还具有与所述多条第一走线间隔且延伸方向不同的第四段。
例如，本公开至少一实施例提供的触控结构中，所述第四段的两端均与所述多条第一走线间隔，且间隔的最小距离为1μm-6μm。
例如，本公开至少一实施例提供的触控结构中，所述多条第一走线的线宽为2μm-4μm。
例如，本公开至少一实施例提供的触控结构中，所述多条第二走线的线宽为2μm-4μm。
例如，本公开至少一实施例提供的触控结构中，所述多个触控单元阵列排布。
本公开至少一实施例还提供一种显示面板，包括显示基板和如上所述的触控结构，显示基板包括衬底基板以及依次设置在所述衬底基板上的驱动电路层、发光器件层以及封装层；触控结构设置在所述封装层的远离所述衬底基板的一侧，其中，所述第一导电层相对于所述第二导电层更靠近所述封装层。
例如，本公开至少一实施例提供的显示面板还包括：黑矩阵层，设置在所述触控结构的远离所述衬底基板的一侧或者靠近所述衬底基板的一侧，包括多个第一透光开口和多个第二透光开口，其中，所述发光器件层包括多个发光器件，所述多个第一透光开口配置为分别通过所述多个发光器件发出的光，所述驱动电路层包括多个透光部分，至少部分第二透光开口中的每个与所述多个透光部分中的至少一个对应设置，且在对应设置 的第二透光开口和透光部分中，所述第二透光开口在所述衬底基板上的正投影与所述透光部分在所述衬底基板上的正投影至少部分重叠。
例如，本公开至少一实施例提供的显示面板中，在平行于所述衬底基板的方向上，所述多个第二透光开口与所述多条第一走线和/或所述多条第二走线的距离大于1μm。
例如，本公开至少一实施例提供的显示面板中，在平行于所述衬底基板的方向上，所述多个第一透光开口与所述多条第一走线和/或所述多条第二走线的距离大于1μm。
例如，本公开至少一实施例提供的显示面板中，在垂直于所述衬底基板的方向上，所述多条第一走线和所述多条第二走线与所述多个第一透光开口和所述多个第二透光开口不重叠。
例如，本公开至少一实施例提供的显示面板中，所述多个第二透光开口中相邻的两个第二透光开口之间设置有一条第一走线或一条第二走线。
例如，本公开至少一实施例提供的显示面板中，所述显示基板具有阵列排布的多个像素单元，所述多个像素单元中的每个包括多个子像素，所述多个子像素中的每个包括设置在所述驱动电路层中的像素驱动电路以及设置在所述发光器件层中的发光器件，所述发光器件具有发光区域；至少部分所述多个透光部分设置在相邻的子像素的发光器件的发光区域之间。
例如，本公开至少一实施例提供的显示面板中，在垂直于所述衬底基板的方向上，所述多条第一走线和所述多条第二走线与所述多个子像素的发光器件的发光区域不重叠。
例如，本公开至少一实施例提供的显示面板中，在平行于所述衬底基板的方向上，所述多个第二透光开口中的至少一个第二透光开口位于一个子像素的发光器件的发光区域与一条第一走线或者一条第二走线之间，所述一个子像素的发光器件的发光区域到与所述至少一个第二透光开口相邻的第一走线或者第二走线之间的距离，大于所述一个子像素的发光器件的发光区域到其他第一走线或者第二走线之间的距离。
例如，本公开至少一实施例提供的显示面板中，所述多个像素单元包括至少一个第一像素单元，所述第一像素单元包括的多个子像素与多个第二透光开口在垂直于显示基板的方向上一一对应且重叠。
例如，本公开至少一实施例提供的显示面板还包括分别设置在所述多个第一透光开口中的多个彩色滤光片。
例如，本公开至少一实施例提供的显示面板还包括纹路触摸表面以及图像传感器阵列，其中，所述图像传感器阵列设置在所述驱动电路层的远离所述发光器件层的一侧，包括多个图像传感器，所述多个图像传感器配置为可接收从所述发光器件层中的多个发光器件发出的且经在所述纹路触摸表面的纹路反射、通过所述第二透光开口和所述透光部分达到所述多个图像传感器的光以用于纹路采集。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为一种自容式触控结构的平面示意图；
图2为一种自容式触控结构的第一触控层的平面示意图；
图3为一种自容式触控结构的第二触控层的平面示意图；
图4为一种自容式触控结构的第一触控层和第二触控层叠层的平面示意图；
图5为本公开至少一实施例提供的一种触控结构的平面示意图；
图6为本公开至少一实施例提供的一种触控结构的第一导电层的平面示意图；
图7为本公开至少一实施例提供的一种触控结构的第二导电层的平面示意图；
图8为本公开至少一实施例提供的一种触控结构的第一导电层和第二导电层叠层的平面示意图；
图9为图8中的触控结构沿A-A线的截面示意图；
图10为本公开至少一实施例提供的一种显示面板的部分平面示意图；以及
图11为本公开至少一实施例提供的一种显示面板的一个子像素的截面面示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
有机发光二极管(OLED)显示面板具有自发光、对比度高、能耗低、视角广、响应速度快、可用于挠曲性面板、使用温度范围广、制造简单等特点，具有广阔的发展前景。为了满足用户多样化的需求，在显示面板中集成多种功能，如触控功能、指纹识别功能等具有重要的意义。例如，在OLED显示面板中形成外挂式(on-cell)触控结构是一种实现方式，该方式通过将触控结构形成于OLED显示面板的封装膜之上，从而实现显示面板的触控功能。
按照工作原理和传输介质的不同，触控结构可分为电阻式、电容式、表面声波式和 红外式，其中电容式触控结构准确度高、抗干扰能力强，因而被广泛采用。电容式触控结构主要分为互容式(mutual capacitance)触控结构和自容式(self capacitance)触控结构。互容式触控结构是由第一触控电极层和第二触控电极层相互重叠构成互电容，利用互电容的变化进行触摸位置检测。自容式结构是由触控电极与人体或大地构成自电容，利用自电容的变化进行位置检测。自容式触控结构具有功耗低和结构简单等特点，被广泛应用于各种显示面板中。
例如，图1示出了一种自容式触控结构的平面示意图，如图1所示，自容式触控结构具有多个间隔设置的触控单元T1、T2等，多个触控单元T1、T2分别通过多个触控走线L1、L2连接到触控芯片IC。对于每一触控单元，其具有叠层的第一触控层、第二触控层和第一触控层和第二触控层之间的触控绝缘层。例如，图2示出了第一触控层的平面示意图，图3示出了第二触控层的平面示意图，图4示出了第一触控层和第二触控层叠层的平面示意图。
如图3所示，第二触控层具有金属网络结构，可作为触控感应结构，当手指触摸到该触控结构时，手指会与金属网络结构中的某一处金属线形成电容，从而改变原金属网络结构与大地之间形成的电容，由此，触控芯片IC可以检测到电容发生改变的位置，进而判断出手指触摸的位置。例如，如图2所示，第一触控层可作为走线层，包括多条触控走线，可以将多个触控单元分别连接至触控IC。
如图4所示，在第一触控层和第二触控层叠层后，第一触控层和第二触控层中的走线线条完全重叠，因此重叠的位置OP会产生较大的寄生电容，导致触控效果差。并且，如图2所示，第一触控层中的触控走线整体沿竖直方向排列，在强光照下，用户从触控结构的表面容易看到第一触控层中的走线，第一触控层的图案可视化程度高，用户体验较差。
本公开至少一实施例提供一种触控结构，该触控结构包括衬底和设置在所述衬底上的多个触控单元，其中，多个触控单元中的至少一个包括依次叠层在衬底上的第一导电层、间隔绝缘层和第二导电层；第一导电层包括由彼此间隔的多条第一走线形成的第一图案，第二导电层包括由彼此间隔的多条第二走线形成的第二图案，多条第一走线中的至少一个包括与多条第二走线至少之一交叠的第一交叠部，多条第二走线中的至少一个包括与第一交叠部交叠的第二交叠部，且第一交叠部所在的第一段与第二交叠部所在的第二段具有不同的延伸方向，其中，第一段为第一走线的以第一交叠部为端点延伸的线段，第二段为第二走线的以第二交叠部为端点延伸的线段。
在本公开实施例提供的上述触控结构中，多条第一走线的第一段与多条第二走线的第二段具有不同的线条延伸方向，因此在交叠时，多条第一走线的第一交叠部与多条第二走线的第二交叠部呈现“点状”交叠，具有较小的交叠面积，因此多条第一走线与多条第二走线不会产生寄生电容或者产生的寄生电容很小可忽略不计，由此可以提高触控结构的触控精度与触控灵敏度，进而提高触控效果、提升用户体验。
下面通过几个具体的实施例对本公开一些实施例的触控结构以及显示面板进行说 明。
本公开至少一实施例提供一种触控结构，图5示出了该触控结构的平面示意图，图6示出了触控结构中触控单元的第一导电层的平面示意图，图7示出了触控单元中第二导电层的平面示意图，图8示出了触控单元中第一导电层和第二导电层叠层的示意图，图9示出了图8中的触控单元沿A-A线的截面示意图。
如图5-图9所示，该触控结构包括衬底B和设置在衬底B上的多个触控单元T11、T12和T13等，多个触控单元T11、T12和T13等呈阵列排布，例如，每个触控单元的整体可以呈块状，例如，每个触控单元的平面形状呈长方形或者正方形等。这些触控单元T11、T12和T13间隔设置，且分别通过多条触控走线L11、L12和L13电连接到触控驱动电路D，以向触控驱动电路D传输电信号或者从触控驱动电路D获取电信号。
例如，多个触控单元中的至少一个(例如每一个)包括依次叠层在衬底B上的第一导电层M1、间隔绝缘层I和第二导电层M2。第一导电层M1包括由彼此间隔的多条第一走线11形成的第一图案，第二导电层M2包括由彼此间隔的多条第二走线12形成的第二图案。例如，如图6-图8所示，多条第一走线11中的至少一个(例如每个)包括与多条第二走线12至少之一交叠的第一交叠部111，多条第二走线12中的至少一个(例如每个)包括与第一交叠部111交叠的第二交叠部112，且第一交叠部111所在的第一段112(图6中虚线方框圈出的部分)与第二交叠部121所在的第二段122(图7中虚线框圈出的部分)具有不同的延伸方向，第一段112为第一走线11的包括第一交叠部111的部分，也即第一段112为第一走线11的以第一交叠部111为端点延伸的线段，第二段122为第二走线12的包括第二交叠部121的部分，也即第二段112为第二走线12的以第二交叠部121为端点延伸的线段。
由此，由于多条第一走线11的第一段112与多条第二走线12的第二段122具有不同的线条延伸方向，因此在交叠时，多条第一走线11的第一交叠部111与多条第二走线12的第二交叠部121呈现“点状”交叠，具有较小的交叠面积，因此多条第一走线11与多条第二走线12不会产生寄生电容或者产生的寄生电容很小可以忽略不计，由此可以提高触控结构的触控精度与触控灵敏度，进而提高触控效果、提升用户体验。
例如，第一段112和第二段122包括直线段，此时，第一段112和第二段122的延伸方向为直线段的延伸方向，或者，第一段112和第二段122包括弧线段，此时，第一段112和第二段122的延伸方向为弧线段在第一交叠部111和第二交叠部121为端点的切线的延伸方向。例如，在图6中，第一段112的延伸方向为图6中虚线的延伸方向。例如，在图7中，第二段122的延伸方向为图7中虚线的延伸方向。例如，如图8和图9所示，在至少一处第一交叠部111与第二交叠部121交叠的位置O，第一交叠部111和第二交叠部121通过间隔绝缘层I中的过孔I1电连接。
例如，一个第一交叠部111在任一方向上的尺寸，大于等于第一走线11在垂直于其延伸方向的线宽，小于等于第一走线11在垂直于其延伸方向上的线宽的2倍，一个第二交叠部121在任一方向上的尺寸，大于等于第二走线12在垂直于其延伸方向的线宽，小 于等于第二走线12在垂直于其延伸方向上的线宽的2倍。由此保证第一交叠部111和第二交叠部121电连接的可靠性。
例如，如图6所示，第一走线11整体大致沿第一方向(图中的竖直方向)弯曲延伸，如图7所示，第二走线12整体大致沿第二方向(图中的右下方向)弯曲延伸。例如，第一方向和第二方向之间的角度为30°-90°，例如45°、、60°或者70°等。由此，在触控结构设置在显示面板上时，多条第一走线11与多条第二走线12的上述设计可以使多条第一走线11与多条第二走线12的延伸位置避开显示面板中多个子像素的发光区域，进而避免影响多个子像素的显示效果。
需要注意的是，本公开的实施例中，第一走线或者第二走线整体的延伸方向指的是，在整体观察第一导电层和第二导电层时，第一走线或者第二走线作为整体所具有的宏观延伸方向。
例如，在一些实施例中，在一个触控单元中，多条第一走线11包括至少一条(例如多条)第一连接走线11A，第一连接走线11A的第一交叠部111与交叠于该第一交叠部的多个第二走线12中的至少部分第二走线12的第二交叠部121通过间隔绝缘层中的过孔I电连接。
例如，多条第一连接走线11A的多个第一交叠部111分别与相邻的两条第二走线12的第二交叠部121分别通过间隔绝缘层中的过孔I电连接，以将相邻的两条第二走线12电连接，如图8所示。
例如，任意相邻的两条第二走线12的第二交叠部121分别通过至少一条第一连接走线11A之一电连接。例如，部分相邻的两条第二走线12的第二交叠部121分别通过同一条第一连接走线11A电连接，或者，部分相邻的两条第二走线12的第二交叠部121分别通过不同的第一连接走线11A电连接。由此，每一触控单元中，所有的第二走线12均可以通过多条第一连接走线11A电连接在一起，构成触控单元的触控感应线，用于感应触控操作。也即，在本公开的实施例中，多条第一走线11包括的多条第一连接走线11A用于电连接多条第二走线12，因此多条第一连接走线11A与多条第二走线12一起，构成触控单元的触控感应线，用于感应触控操作。
例如，如图6所示，多条第一连接走线11A间隔排布，例如，多条第一连接走线11A在多条第一走线11中间隔排布。例如，在一些示例中，多条第一走线11还包括多条第二连接走线11B，多条第二连接走线11B与第一连接走线11A间隔排布，例如，多条第二连接走线11B分别设置在相邻的第一连接走线11A之间，多条第二连接走线11B可以作为多个触控单元的触控走线。例如，图6-图8中示出的触控单元可以为图5中的触控单元T13，此时，多条第二连接走线11B可以作为多个触控单元T11、T12的触控走线L11、L12。例如，多条第二连接走线11B与多条第一连接走线11A以及多条第二走线12绝缘，即在第一导电层中，多条第二连接走线11B与多条第一连接走线11A之间存在间隔。
例如，在一些实施例中，如图5所示，触控结构还可以包括触控驱动电路D，第一 连接走线11A与触控驱动电路D电连接，例如，在一些示例中，多条第二连接走线11B与多条第一连接走线11A均与触控驱动电路D电连接，从而多条第二连接走线11B与多条第一连接走线11A可以从触控驱动电路D获取电信号或者向触控驱动电路D传输电信号。例如，触控驱动电路D可以为触控芯片等任意形式的控制电路。
例如，在一些实施例中，如图6所示，第一导电层M1还可以具有与多条第一连接走线11A连接且延伸方向不同的第三段113，例如，第三段113的延伸方向垂直于第一方向。此时，第三段113可以作为第一连接走线11A的一部分，并与多条第二走线12一起作为触控感应线，用于感应触控操作。由此，第三段113的设置扩大了触控感应线的延伸范围，进而可以提高触控结构的触控精度与触控灵敏度。
例如，在一些实施例中，如图6所示，第三段113的第一端与多条第一连接走线11A连接，第三段113的第二端与相邻的多条第二连接走线11间隔，且间隔的最小距离G1为1μm-6μm，例如1μm、2μm、3μm、4μm、4.5μm、5μm或者5.5μm等，由此可以在实现第三段113具有较长的延伸长度的同时，还能使第一连接走线11A与第二连接走线11B具有足够的安全距离，以保持绝缘。
例如，在一些实施例中，如图6所示，第一导电层M1还可以具有与多条第一走线11间隔且延伸方向不同的第四段114。例如，第四段114的延伸方向与第三段113的延伸方向相同。例如，第四段114的两端均与多条第一走线11间隔，且间隔的最小距离G2和G3为1μm-6μm，例如均为1μm、2μm、3μm、4μm、4.5μm、5μm或者5.5μm等。本公开的实施例中，第四段114作为虚拟线，不与任何电路结构连接，第四段114的设置可使得第一导电层M1的图案均一，在触控结构的制备过程中，可以保持第一导电层M1的图案的刻蚀均一性，使得第一导电层M1具有较高的制备精度，并使制备得到的第一导电层M1整面的视觉效果更均一。
例如，在一些实施例中，如图7所示，多条第二走线12还可以具有与多条第二走线12的第二段122连接且延伸方向不同的第五段123。例如，第五段123的延伸方向与第二方向相交，例如垂直。例如，在垂直于衬底B的板面的方向上，第五段123与多条第一走线11不重叠。本公开的实施例中，第五段123可扩大多条第二走线12的延伸范围，作为触控感应线，由此可以提高触控结构的触控精度与触控灵敏度。
例如，在一些实施例中，多条第一走线11的线宽(即在垂直于走线的延伸方向的尺寸)可以为2μm-4μm，例如2.5μm、3μm或者3.5μm等。多条第二走线12的线宽可以为2μm-4μm，例如2.5μm、3μm或者3.5μm等。多条第一走线11的线宽与多条第二走线12的线宽可以相同也可以不同。
例如，在本公开的实施例中，触控结构的第一导电层M1和第二导电层M2可以为金属层或者透明导电层，其材料可以包括铜、铝等金属材料或者ITO、IZO等透明金属氧化物。衬底B可以包括氧化硅、氮化硅或氮氧化硅等无机绝缘材料或者聚酰亚胺等有机绝缘材料。间隔绝缘层I也可以包括氧化硅、氮化硅或氮氧化硅等无机绝缘材料或者聚酰亚胺等有机绝缘材料。例如，如图9所示，触控结构的第二导电层M2上还可以覆 盖有保护绝缘层P，保护绝缘层P也可以包括氧化硅、氮化硅或氮氧化硅等无机绝缘材料或者聚酰亚胺等有机绝缘材料，以保护第二导电层M2。本公开的实施例对触控结构的其他结构以及材料等不做具体限定。
本公开至少一实施例还提供一种显示面板，该显示面板包括显示基板和本公开实施例提供的触控结构，例如，图10示出了该显示面板的部分平面示意图，图10中示出的触控结构例如为图5中的触控结构在虚线框中的部分；图11示出了该显示面板的一个子像素的部分截面示意图。
如图11所示，显示基板包括衬底基板1011以及依次设置在衬底基板1011上的驱动电路层、发光器件层以及封装层EN；触控结构设置在封装层EN的远离衬底基板1011的一侧，此时，第一导电层M1相对于第二导电层M2更靠近封装层EN。
例如，显示基板具有阵列排布的多个像素单元，用于进行显示操作。多个像素单元中的每个包括多个子像素，多个子像素中的每个包括设置在驱动电路层中的像素驱动电路以及设置在发光器件层中的发光器件EM，发光器件EM具有发光区域LE。
例如，如图11所示，像素驱动电路包括薄膜晶体管T和存储电容C等结构。薄膜晶体管T包括依次设置在衬底基板1011上的有源层1021、栅极1022、栅绝缘层1014(例如包括第一栅绝缘层1014A和第二栅绝缘层1014B)，层间绝缘层1015和源漏电极(包括源极1023和漏极1024)。存储电容C包括第一极板1031和第二极板1032。例如，第一极板1031与栅极1022同层设置，第二极板1032在栅绝缘层1014和层间绝缘层1015之间。
需要注意的是，本公开的实施例中，两个结构层或者功能层同层设置指的是该两个结构层或者功能层可以采用相同的材料层并利用相同制备工艺(例如构图工艺等)形成，从而可以简化显示基板的制备工艺。
例如，像素驱动电路可以形成为2T1C(两个薄膜晶体管一个存储电容)、6T1C(六个薄膜晶体管一个存储电容)等结构，从而包括多个薄膜晶体管，该多个薄膜晶体管具有如图11所示的叠层结构相似或相同的结构，图11中仅示出了与发光器件直接连接的薄膜晶体管，该薄膜晶体管可以是驱动薄膜晶体管，也可以是发光控制薄膜晶体管等。
例如，如图11所示，显示基板还可以包括平坦化层1016、像素界定层1017以及隔垫物1018。平坦化层1016用于平坦化像素驱动电路，像素界定层1017设置在平坦化层1016远离像素驱动电路的一侧，像素界定层1017包括多个子像素开口，用于界定多个子像素的发光区域LE。
例如，发光器件EM包括阳极层1041，发光层1042以及阴极层1043。阳极层1041通过平坦化层1016中的过孔连接到薄膜晶体管T的源极1023。例如，阴极层1043在衬底基板1011上整面形成。例如，在一些示例中，阳极层1041与发光层1042之间以及阴极层1043与发光层1042之间还可以包括有助于发光层1042发光的辅助发光层(图中未示出)，例如包括电子传输层、电子注入层、空穴传输层以及空穴注入层中的一种或多种， 图中未示出。
例如，在一些实施例中，如图11所示，显示基板还可以包括设置在衬底基板1011上的缓冲层1012，缓冲层1012可以提供一个平坦的表面，并可防止水氧等杂质从衬底基板1011渗入到像素驱动电路等功能结构中，从而对衬底基板1011上的其他功能结构起到保护作用。
例如，在一些实施例中，如图11所示，显示面板还可以包括黑矩阵层BM，黑矩阵层BM设置在触控结构的远离衬底基板1011的一侧(图中示出的情况)或者靠近衬底基板1011的一侧。黑矩阵层BM包括多个第一透光开口BM1和多个第二透光开口BM2。多个第一透光开口BM1配置为分别通过多个发光器件EM发出的光。例如，多个第一透光开口BM1在衬底基板1011上的正投影分别与多个发光器件EM的发光区域LE在衬底基板1011上的正投影至少部分重叠，例如完全重叠。
例如，在一些示例中，每个像素单元包括一个红色子像素，一个蓝色子像素和两个绿色子像素。此时，如图10所示，多个第一透光开口BM1包括对应于红色子像素的发光器件的第一透光开口R、对应于蓝色子像素的发光器件的第一透光开口B以及对应于绿色子像素的发光器件的第一透光开口G。
例如，在一些实施例中，如图11所示，驱动电路层包括多个透光部分TP，至少部分第二透光开口BM2中的每个与多个透光部分TP中的至少一个对应设置，且在对应设置的第二透光开口BM2和透光部分TP中，第二透光开口BM2在衬底基板1011上的正投影与透光部分TP在衬底基板1011上的正投影至少部分重叠。第二透光开口BM2和透光部分TP可用于通过感应光，例如用于纹路识别的感应光等，稍后详细介绍。
例如，在平行于衬底基板1011的板面的方向上，至少部分透光部分TP设置在相邻的子像素的发光器件EM的发光区域LE之间。例如，多个透光部分TP分别设置在相邻的子像素的像素驱动电路之间。
例如，在一些实施例中，多个像素单元包括至少一个第一像素单元，第一像素单元包括的多个子像素与多个第二透光开口在垂直于显示基板的方向上一一对应且重叠。例如，多个像素单元均为第一像素单元，此时，显示面板中的每个子像素均对应一个第二透光开口BM2。
例如，在一些示例中，如图10所示，多个第二透光开口BM2包括分别对应于第一像素单元的不同子像素的第二透光开口B1、第二透光开口B2、第二透光开口B3和第二透光开口B4。例如，第二透光开口B1、第二透光开口B2、第二透光开口B3和第二透光开口B4形状和大小均不相同。
例如，在一些实施例中，在垂直于衬底基板1011的方向(图中的竖直方向)上，多条第一走线11和多条第二走线12与多个第一透光开口BM1和多个第二透光开口BM2不重叠。
例如，在一些实施例中，如图11所示，在平行于衬底基板1011的方向(图中的水平方向)上，多个第一透光开口BM1与多条第一走线11和/或多条第二走线12的距离 H1大于1μm，例如大于2.5μm，例如H1为3μm或者3.5μm等。例如，在一些实施例中，在平行于衬底基板1011的方向上，多个第二透光开口BM2与多条第一走线11和/或多条第二走线12的距离H2也大于1μm，例如大于2.5μm，例如H2为3μm或者3.5μm等。由此，多个第一透光开口BM1和多个第二透光开口BM2与多条第一走线11和多条第二走线12的距离足够远，多条第一走线11和多条第二走线12被黑矩阵层BM充分遮挡，使得即使在强光下，用户也不会从显示面板的表面看到多条第一走线11和多条第二走线12，提高了用户的视觉体验。
例如，在一些实施例中，如图10所示，多个第二透光开口BM2中相邻的两个第二透光开口BM2之间设置有一条第一走线11或一条第二走线12。例如，在图10示出的示例中，第二透光开口B1和第二透光开口B2之间设置一条第一走线11，第二透光开口B2和第二透光开口B3之间设置一条第二走线12，第二透光开口B3和第二透光开口B4之间设置一条第一走线11。由此，多个第二透光开口BM2在多条第一走线11以及多条第二走线12之间均匀排布，有助于显示面板的均一性。
例如，在垂直于衬底基板1011的方向上，多条第一走线11和多条第二走线12与多个子像素的发光器件EM的发光区域LE不重叠，进而避免影响多个子像素的显示效果。
例如，在一些实施例中，如图10所示，在平行于衬底基板1011的板面的方向上，多个第二透光开口BM2中的至少一个第二透光开口BM2位于一个子像素的发光器件的发光区域LE与一条第一走线11或者一条第二走线12之间，该一个子像素的发光器件的发光区域LE到与该至少一个第二透光开口BM2相邻的第一走线11或者第二走线12之间的距离，大于该一个子像素的发光器件的发光区域LE到其他第一走线11或者第二走线12之间的距离。
例如，在一些示例中，如图10所示，在平行于衬底基板1011的板面的方向上，第二透光开口B2位于蓝色子像素的发光器件的发光区域LE与一条第二走线12之间，该蓝色子像素的发光器件的发光区域LE到与第二透光开口B2相邻的第二走线12的距离H3大于该蓝色子像素的发光器件的发光区域到其他第一走线11或者第二走线12之间的距离H4。由此，显示面板中均匀布置第一透光开口BM1、第二透光开口BM2以及多条第一走线11和多条第二走线12，以避免显示面板中显示功能与触控功能相互影响，提高显示面板的显示效果与触控效果。
例如，在一些实施例中，如图11所示，显示面板还可以包括分别设置在多个第一透光开口BM1中的多个彩色滤光片CF。多个彩色滤光片CF包括多个不同颜色的滤光片，以分别对应于不同颜色的子像素的发光器件。例如，对应设置的子像素与彩色滤光片CF的颜色相同，从而使得从子像素的发光器件发出的光透过彩色滤光片CF后，射出的光的颜色更纯，使得显示面板的显示效果更好。
例如，在一些实施例中，如图11所示，显示面板还可以包括纹路触摸表面S1以及图像传感器阵列SA，图像传感器SA阵列设置在驱动电路层的远离发光器件层的一侧，包括多个图像传感器S2，多个图像传感器S2配置为可接收从发光器件层中的多个发光 器件EM发出的且经在纹路触摸表面S1的纹路(例如指纹或者掌纹等)反射、通过第二透光开口BM2和透光部分TP达到多个图像传感器S2的光以用于纹路采集。由此显示面板还具有纹路识别功能。
例如，在一些实施例中，图像传感器SA可以设置在衬底基板1011的远离驱动电路层的一侧，因此在制备过程中可以在显示基板制备完成后贴附在衬底基板1011上，从而不影响显示基板的制程。
例如，在一些实施例中，如图11所示，显示面板还可以包括透明盖板CV，透明盖板CV设置在黑矩阵层BM的远离衬底基板1011的一侧。例如，透明盖板CV的表面形成为纹路触摸表面S1。例如，透明盖板CV可以为玻璃盖板。
例如，在一些实施例中，显示基板可以为柔性显示基板，此时，衬底基板1011可以包括聚酰亚胺(PI)等柔性绝缘材料。例如，在一些示例中，衬底基板1011可以为多个柔性层和多个阻挡层交替设置的叠层结构，例如为两个柔性层和两个阻挡层交替设置的叠层结构。此时，柔性层可以包括聚酰亚胺，阻挡层可以包括氧化硅、氮化硅或者氮氧化硅等无机绝缘材料。例如，在一些实施例中，显示基板也可以为刚性基板，此时，衬底基板1011可以为玻璃、石英等刚性基板。
例如，在本公开的实施例中，缓冲层1012可以采用氧化硅、氮化硅、或者氮氧化硅等无机绝缘材料，有源层1021可以采用多晶硅和金属氧化物等材料，栅绝缘层1014可以采用氧化硅、氮化硅或者氮氧化硅等无机绝缘材料，栅极1022和第一极板1031可以采用铜、铝、钛、钴等金属材料，例如可以形成为单层结构或者多层结构，例如钛/铝/钛、钼/铝/钼等多层结构，第二极板1032可以采用铜、铝、钛、钴等金属或者合金材料，层间绝缘层1015可以采用氧化硅、氮化硅或者氮氧化硅等无机绝缘材料，源漏电极1023和1024可以采用铜、铝、钛、钴等金属材料，例如可以形成为单层结构或者多层结构，例如钛/铝/钛、钼/铝/钼等多层结构，阳极层1041的材料可以包括ITO、IZO等金属氧化物或者Ag、Al、Mo等金属或其合金。发光层1042的材料和辅助发光层的材料为有机材料，发光层1042的材料可根据需求选择可发出某一颜色光(例如红光、蓝光或者绿光等)的发光材料。阴极层1043的材料可以包括Mg、Ca、Li或Al等金属或其合金，或者IZO、ZTO等金属氧化物，又或者PEDOT/PSS(聚3，4-乙烯二氧噻吩/聚苯乙烯磺酸盐)等具有导电性能有机材料。平坦化层1016、像素界定层1017以及隔垫物1018可以采用聚酰亚胺等有机绝缘材料。
例如，封装层EN为复合封装层，包括依次叠层设置的第一无机封装层1051、第一有机封装层1052和第二无机封装层1053。例如，第一无机封装层1051和第二无机封装层1053可以采用氮化硅、氧化硅、氮氧化硅等无机材料形成，第一有机封装层1052可以采用聚酰亚胺(PI)、环氧树脂等有机材料形成。该复合封装层可以显示面板上的功能结构形成多重保护，具有更好的封装效果。本公开的实施例对显示面板上的各种功能结构的材料不做具体限定。
还有以下几点需要说明：
(1)本公开实施例附图只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(2)为了清晰起见，在用于描述本公开的实施例的附图中，层或区域的厚度被放大或缩小，即这些附图并非按照实际的比例绘制。可以理解，当诸如层、膜、区域或基板之类的元件被称作位于另一元件“上”或“下”时，该元件可以“直接”位于另一元件“上”或“下”或者可以存在中间元件。
(3)在不冲突的情况下，本公开的实施例及实施例中的特征可以相互组合以得到新的实施例。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，本公开的保护范围应以权利要求的保护范围为准。

Claims (29)

  1. 一种触控结构，包括衬底和设置在所述衬底上的多个触控单元，其中，所述多个触控单元中的至少一个包括依次叠层在所述衬底上的第一导电层、间隔绝缘层和第二导电层；
    所述第一导电层包括由彼此间隔的多条第一走线形成的第一图案，所述第二导电层包括由彼此间隔的多条第二走线形成的第二图案，
    所述多条第一走线中的至少一个包括与所述多条第二走线至少之一交叠的第一交叠部，所述多条第二走线中的至少一个包括与所述第一交叠部交叠的第二交叠部，且所述第一交叠部所在的第一段与所述第二交叠部所在的第二段具有不同的延伸方向，其中，所述第一段为所述第一走线的以所述第一交叠部为端点延伸的线段，所述第二段为所述第二走线的以所述第二交叠部为端点延伸的线段。
  2. 根据权利要求1所述的触控结构，其中，所述第一段和所述第二段包括直线段，所述第一段和所述第二段的延伸方向为所述直线段的延伸方向，和/或
    所述第一段和所述第二段包括弧线段，所述第一段和所述第二段的延伸方向为所述弧线段在所述第一交叠部和第二交叠部为端点的切线的延伸方向。
  3. 根据权利要求1或2所述的触控结构，其中，一个所述第一交叠部在任一方向上的尺寸，大于等于所述第一走线在垂直于其延伸方向的线宽，小于等于所述第一走线在垂直于其延伸方向上的线宽的2倍；
    一个所述第二交叠部在任一方向上的尺寸，大于等于所述第二走线在垂直于其延伸方向的线宽，小于等于所述第二走线在垂直于其延伸方向上的线宽的2倍。
  4. 根据权利要求1-3任一所述的触控结构，其中，所述第一走线整体大致沿着第一方向延伸，所述第二走线整体大致沿着第二方向延伸。
  5. 根据权利要求4所述的触控结构，其中，所述第一方向和所述第二方向之间的角度为30°-90°。
  6. 根据权利要求1-4任一所述的触控结构，其中，在至少一处所述第一交叠部与所述第二交叠部交叠的位置，所述第一交叠部和所述第二交叠部通过所述间隔绝缘层中的过孔电连接。
  7. 根据权利要求6所述的触控结构，其中，在一个触控单元中，所述多条第一走线包括至少一条第一连接走线，所述第一连接走线的第一交叠部与交叠于所述第一交叠部的多个第二走线中的至少部分第二走线的第二交叠部通过所述间隔绝缘层中的过孔电连接。
  8. 根据权利要求7所述的触控结构，其中，任意相邻的两条第二走线的第二交叠部分分别通过所述至少一条第一连接走线电连接。
  9. 根据权利要求7或8所述的触控结构，其中，所述至少一条第一连接走线包括多条第一连接走线，所述多条第一连接走线间隔排布；
    所述多条第一走线还包括多条第二连接走线，所述多条第二连接走线与所述第一连接走线间隔排布；
    所述多条第二连接走线与所述多条第一连接走线以及所述多条第二走线绝缘。
  10. 根据权利要求9所述的触控结构，还包括触控驱动电路，
    其中，所述第一连接走线与触控驱动电路电连接。
  11. 根据权利要求9或10所述的触控结构，其中，所述第一导电层还具有与所述多条第一连接走线连接且延伸方向不同的第三段。
  12. 根据权利要求11所述的触控结构，其中，所述第三段的第一端与所述多条第一连接走线连接，所述第三段的第二端与相邻的所述多条第二连接走线间隔，且间隔的最小距离为1μm-6μm。
  13. 根据权利要求7-12任一所述的触控结构，其中，所述第一导电层还具有与所述多条第一走线间隔且延伸方向不同的第四段。
  14. 根据权利要求13所述的触控结构，其中，所述第四段的两端均与所述多条第一走线间隔，且间隔的最小距离为1μm-6μm。
  15. 根据权利要求1-14任一所述的触控结构，其中，所述多条第一走线的线宽为2μm-4μm。
  16. 根据权利要求1-15任一所述的触控结构，其中，所述多条第二走线的线宽为2μm-4μm。
  17. 根据权利要求1-16任一所述的触控结构，其中，所述多个触控单元阵列排布。
  18. 一种显示面板，包括：
    显示基板，包括衬底基板以及依次设置在所述衬底基板上的驱动电路层、发光器件层以及封装层；以及
    权利要求1-17任一所述的触控结构，设置在所述封装层的远离所述衬底基板的一侧，其中，所述第一导电层相对于所述第二导电层更靠近所述封装层。
  19. 根据权利要求18所述的显示面板，还包括：
    黑矩阵层，设置在所述触控结构的远离所述衬底基板的一侧或者靠近所述衬底基板的一侧，包括多个第一透光开口和多个第二透光开口，
    其中，所述发光器件层包括多个发光器件，所述多个第一透光开口配置为分别通过所述多个发光器件发出的光，
    所述驱动电路层包括多个透光部分，至少部分第二透光开口中的每个与所述多个透光部分中的至少一个对应设置，且在对应设置的第二透光开口和透光部分中，所述第二透光开口在所述衬底基板上的正投影与所述透光部分在所述衬底基板上的正投影至少部分重叠。
  20. 根据权利要求19所述的显示面板，其中，在平行于所述衬底基板的方向上，所述多个第二透光开口与所述多条第一走线和/或所述多条第二走线的距离大于1μm。
  21. 根据权利要求19或20所述的显示面板，其中，在平行于所述衬底基板的方向 上，所述多个第一透光开口与所述多条第一走线和/或所述多条第二走线的距离大于1μm。
  22. 根据权利要求19所述的显示面板，其中，在垂直于所述衬底基板的方向上，所述多条第一走线和所述多条第二走线与所述多个第一透光开口和所述多个第二透光开口不重叠。
  23. 根据权利要求22所述的显示面板，其中，所述多个第二透光开口中相邻的两个第二透光开口之间设置有一条第一走线或一条第二走线。
  24. 根据权利要求22所述的显示面板，其中，所述显示基板具有阵列排布的多个像素单元，所述多个像素单元中的每个包括多个子像素，所述多个子像素中的每个包括设置在所述驱动电路层中的像素驱动电路以及设置在所述发光器件层中的发光器件，所述发光器件具有发光区域；
    至少部分所述多个透光部分设置在相邻的子像素的发光器件的发光区域之间。
  25. 根据权利要求24所述的显示面板，其中，在垂直于所述衬底基板的方向上，所述多条第一走线和所述多条第二走线与所述多个子像素的发光器件的发光区域不重叠。
  26. 根据权利要求25所述的显示面板，其中，在平行于所述衬底基板的方向上，所述多个第二透光开口中的至少一个第二透光开口位于一个子像素的发光器件的发光区域与一条第一走线或者一条第二走线之间，所述一个子像素的发光器件的发光区域到与所述至少一个第二透光开口相邻的第一走线或者第二走线之间的距离，大于所述一个子像素的发光器件的发光区域到其他第一走线或者第二走线之间的距离。
  27. 根据权利要求24-26任一所述的显示面板，其中，所述多个像素单元包括至少一个第一像素单元，所述第一像素单元包括的多个子像素与多个第二透光开口在垂直于显示基板的方向上一一对应且重叠。
  28. 根据权利要求19-27任一所述的显示面板，还包括分别设置在所述多个第一透光开口中的多个彩色滤光片。
  29. 根据权利要求19-28任一所述的显示面板，还包括纹路触摸表面以及图像传感器阵列，
    其中，所述图像传感器阵列设置在所述驱动电路层的远离所述发光器件层的一侧，包括多个图像传感器，所述多个图像传感器配置为可接收从所述发光器件层中的多个发光器件发出的且经在所述纹路触摸表面的纹路反射、通过所述第二透光开口和所述透光部分达到所述多个图像传感器的光以用于纹路采集。
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