WO2022241679A1 - 触控结构以及显示面板 - Google Patents
触控结构以及显示面板 Download PDFInfo
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- 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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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
Description
Claims (29)
- 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。
- 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。
- 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。
- 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。
- 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°。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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。
- 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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