WO2023109173A1 - 触控显示面板及触控显示装置 - Google Patents
触控显示面板及触控显示装置 Download PDFInfo
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- WO2023109173A1 WO2023109173A1 PCT/CN2022/114444 CN2022114444W WO2023109173A1 WO 2023109173 A1 WO2023109173 A1 WO 2023109173A1 CN 2022114444 W CN2022114444 W CN 2022114444W WO 2023109173 A1 WO2023109173 A1 WO 2023109173A1
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Definitions
- the present application relates to the field of display technology, in particular to a touch display panel and a touch display device.
- a display device with a touch function (such as a touch display), as a simple, convenient and natural way of human-computer interaction, has been widely used in electronic devices such as mobile phones and computers.
- the touch display panel includes touch electrodes and electrode lines connected to the touch electrodes, and the touch electrodes are connected to a touch IC (integrated circuit, integrated circuit) through the electrode lines.
- touch IC integrated circuit, integrated circuit
- the application provides a touch display panel, including:
- the shielding layer disposed on one side of the substrate, the shielding layer comprising a plurality of shielding units arranged in an array;
- the touch function layer is arranged on the side of the shielding layer facing away from the substrate, and the touch function layer includes a plurality of touch electrodes arranged in an array;
- the plurality of electrode lines include at least one first-type electrode line
- the first-type electrode line includes a first lead wire provided on the same layer as the touch function layer, and is electrically connected to the first lead wire And the second lead wire arranged on the same layer as the shielding layer;
- the second lead wire and the shielding unit are spaced and insulated from each other.
- the above-mentioned touch display panel includes a substrate, a shielding layer, a touch function layer and a plurality of electrode lines, and the shielding layer arranged on one side of the substrate includes a plurality of shielding units arranged in an array, which can control the
- the display function layer plays a shielding role to prevent external carriers from interfering with the display function layer.
- the touch function layer disposed on the side of the shielding layer facing away from the substrate includes a plurality of touch electrodes arranged in an array, which can detect touch operations at different positions.
- the plurality of electrode lines corresponding to and electrically connected to the plurality of touch electrodes include at least one first type electrode line, the first type electrode line includes a first lead wire arranged on the same layer as the touch function layer, The lead wire is electrically connected to the second lead wire provided on the same layer as the shielding layer.
- the second lead wire and the shielding unit are spaced and insulated from each other.
- the touch electrode can be connected to the touch IC through the corresponding electrode wire, and will be separated from the touch electrode.
- the electrode wires arranged in one layer are transferred to the same layer as the shielding layer, and the electrode wires connected to the touch electrodes are arranged using the gaps on both sides of the shielding unit, which can avoid a separate layer of electrode wires connected to the touch electrodes.
- the entire touch function layer only needs to set a layer of touch electrodes on the display function layer, which greatly reduces the production process and effectively improves The production efficiency reduces the production cost and does not affect the shielding effect of the shielding unit on external carriers.
- the touch electrodes are arranged between the gaps of the anodes, which can be arranged on the same layer as the anodes without affecting the anodes.
- the plurality of electrode lines further include at least one second-type electrode line, and the second-type electrode line includes a third lead wire disposed on the same layer as the touch function layer.
- the electrode lines corresponding to the touch electrodes are arranged on the shielding layer and the anode layer at the same time, and the routing design is relatively easy.
- the touch control electrodes electrically connected to the first type electrode lines and the touch control electrodes electrically connected to the second type electrode lines are arranged in a staggered manner;
- the touch electrodes electrically connected to the first type electrode lines and the touch electrodes electrically connected to the second type electrode lines are alternately arranged in the column direction, and the distance between the electrode lines electrically connected to two adjacent touch electrodes is relatively small. It is beneficial to reduce the mutual interference between the electrode lines.
- the touch electrodes electrically connected to the first type of electrode lines and the touch electrodes electrically connected to the second type of electrode lines are all staggered in the row and column direction, and the distance between the electrode lines electrically connected to two adjacent touch electrodes reaches The farthest, can minimize the mutual interference between the electrode wires.
- the multiple electrode wires are the first type electrode wires. At this time, all the electrode wires pass under the dam structure, which can effectively avoid the photoresist residue that occurs when the electrode wires cross the dam, which will cause short circuit of the electrode wires or increase the production cost due to overexposure. The problem.
- the touch display panel includes a display area and a non-display area at least partially surrounding the display area;
- the display area is provided with a contact hole extending along a direction perpendicular to the touch display panel, and the first lead and the second lead are electrically connected through the contact hole.
- Both the shielding unit and the anode are on the display area, and the electrode wires are led from the anode layer to the shielding layer on the display area.
- the electrode wires do not penetrate the packaging layer, which is beneficial to block the outside water and oxygen from invading the light-emitting layer group.
- the touch display panel further includes:
- a dam structure disposed on the substrate and located in the non-display area
- the second lead passes from a side of the dam structure close to the substrate.
- the second lead wire is electrically connected to the chip on the bonding area after passing through the bottom of the embankment structure, which can prevent the electrode wire from turning over the embankment. If the electrode lines turn over from the dams, the height difference of the dams will lead to a thicker photoresist deposited on the electrode lines, and the photoresist is likely to be insufficiently exposed and residues will occur, which will lead to short circuits between the electrode lines. Moreover, sufficient exposure of the photoresist consumes more production capacity, and the production cost is higher. In this embodiment, by passing the electrode wires under the embankment structure, it is possible to avoid the problem of short circuit of the electrode wires caused by residual photoresist when the electrode wires climb over the embankment or high production cost due to overexposure.
- the non-display area includes a bending area, and after the electrode lines pass through the side of the dam structure close to the substrate, they are transferred from the shielding layer to the bending area. wire layer, then transfer back to the shield layer.
- the electrode lines are first transferred to the wiring layer before passing through the bending area, and then transferred back to the shielding layer after passing through the bending area, so as to uniformly protect the wiring on the bending area.
- the touch display panel further includes:
- the driving circuit layer is arranged between the anode layer and the shielding layer.
- the present application also provides a touch display device, including the touch display panel described in any one of the above embodiments.
- FIG. 1 is a schematic diagram of a partial structure of a self-capacitive touch display panel in the related art
- FIG. 2 is a partial top view of the self-capacitive touch display panel shown in FIG. 1;
- FIG. 3 is a schematic diagram of a partial structure of a touch display panel in an embodiment of the present application.
- FIG. 4 is a partial top view of the touch display panel shown in FIG. 3;
- FIG. 5 is a schematic diagram of a partial structure of a touch display panel in another embodiment of the present application.
- FIG. 6 is a partial top view of the touch display panel shown in FIG. 5;
- FIG. 7 is another partial top view of the touch display panel shown in FIG. 5;
- FIG. 8 is another partial top view of the touch display panel shown in FIG. 5;
- FIG. 9 is a schematic diagram of a partial structure between a display area and a non-display area in a touch display panel in an embodiment of the present application.
- An electronic or electrical device and/or any other related device or component may be implemented using any suitable hardware, firmware (eg ASIC), software or a combination of software, firmware and hardware.
- the various components of these devices may be formed on one integrated circuit (IC) chip or on separate IC chips.
- various components of these devices may be implemented on a flexible printed circuit film, a tape carrier package (TCP), a printed circuit board (PCB), or formed on one substrate.
- various components of these devices may run on one or more processors in one or more computing devices to execute computer program instructions and interact with other system components to perform the various functions described herein process or thread.
- Computer program instructions are stored in memory, which may be implemented in a computing device using standard storage devices such as, for example, random access memory (RAM).
- Computer program instructions may also be stored on other non-transitory computer-readable media such as, for example, such as CD-ROMs, flash drives, etc.).
- RAM random access memory
- Computer program instructions may also be stored on other non-transitory computer-readable media such as, for example, such as CD-ROMs, flash drives, etc.).
- those skilled in the art will recognize that the functionality of various computing devices may be combined or integrated into a single computing device, or that the functionality of a particular computing device may be distributed among one or more other computing devices without departing from the spirit and scope of the exemplary embodiments of the inventive concept.
- the touch display device is a display device with a touch function, such as a touch screen, a touch display, and the like.
- the touch display device includes a touch display panel.
- the touch display panel includes a touch function layer and a display function layer.
- the touch function layer is divided into two types: self-capacitance and mutual capacitance.
- FIG. 1 is a schematic diagram of a partial structure of a self-capacitive touch display panel in the related art.
- the self-capacitive touch display panel includes a display function layer 102 and a touch function layer.
- the electrode sublayer 104 and the wiring sublayer 106 are layered on the layer 102 , and the insulating sublayer 108 is located between the electrode sublayer 104 and the wiring sublayer 106 .
- FIG. 2 is a partial top view of the self-capacitive touch display panel shown in FIG. 1 .
- the electrode sub-layer 104 includes a plurality of touch electrodes 105 arranged in the same layer and distributed in an array.
- the wiring sub-layer 106 includes a plurality of electrode lines 107 arranged in the same layer and parallel to each other.
- the plurality of electrode lines 107 correspond to the plurality of touch electrodes 105 one by one, each electrode line 107 is located below the corresponding touch electrode 105, and is electrically connected to the corresponding touch electrode 105 through the conductive pillar 109 penetrating through the insulating sublayer 108 .
- the touch electrodes 105 and the electrode lines 107 are distributed in different layers, and an insulating material needs to be laid between the touch electrodes 105 and the electrode lines 107, so that the entire touch function layer needs to be provided with a wiring sub-layer 106 and an insulator in sequence on the display function layer.
- the three sub-layers of layer 108 and electrode sub-layer 104 can be formed. The flow process of production technique like this is more, and production efficiency is lower, and production cost is higher.
- the electrode lines 107 are located between two adjacent touch electrodes 105 . Since each touch electrode 105 has a corresponding electrode line 107, and the electrode lines 107 need to be spaced apart from each other, so the distance between two adjacent touch electrodes 105 is relatively large at this time, which may affect the Due to the detection effect of the touch electrodes 105 on the touch operation, there is an area between two adjacent touch electrodes 105 where the touch operation cannot be detected. Therefore, in practical applications, only one layer of electrode wires electrically connected to the touch electrodes can be provided separately in the self-capacitive touch display panel, resulting in high production cost of the self-capacitive touch display panel.
- the touch display panel includes a substrate, a Bottom Shelter Metal (BSM for short) layer (hereinafter referred to as shielding layer), A touch function layer and a plurality of electrode lines.
- the shielding layer is arranged on one side of the substrate.
- the shielding layer includes a plurality of shielding units arranged in an array.
- the touch function layer is arranged on the side of the shielding layer facing away from the substrate.
- the touch function layer includes multiple shielding units arranged in an array.
- the plurality of electrode lines correspond to and are electrically connected to the plurality of touch electrodes.
- the plurality of electrode lines include at least one first-type electrode line, and the first-type electrode line includes the same layer as the touch function layer.
- the first lead wire, and the second lead wire electrically connected with the first lead wire and provided on the same layer as the shielding layer, the second lead wire and the shielding unit are spaced from each other and insulated.
- the touch display panel provided in the embodiment of the present application such as an OLED (Organic Light-Emitting Diode, organic light-emitting diode) display panel, can be applied to electronic equipment such as mobile phone terminals, tablet computers, notebook computers, wearable devices, and vehicle-mounted devices.
- OLED Organic Light-Emitting Diode, organic light-emitting diode
- OLED can be divided into AMOLED (Active Matrix Organic Light-Emitting Diode, active organic light-emitting diode) and PMOLED (Passive Matrix Organic Light-Emitting Diode, passive organic light-emitting diode).
- AMOLED uses TFT (Thin Film Transistor, Thin Film Field Effect Transistor) array to control OLED pixels.
- TFT Thin Film Transistor, Thin Film Field Effect Transistor
- a shielding layer is provided between the substrate and the display function layer.
- the shielding layer includes shielding units one-to-one corresponding to the TFTs, and each shielding unit is located between the corresponding TFT and the substrate.
- the substrate is a carrier provided for the deposition of the semiconductor material, and can play a supporting role for the film layer formed by the deposition of the semiconductor material.
- Self-capacitive touch There are two types of touch: self-capacitive and mutual-capacitive.
- the mutual capacitive touch electrodes are distributed in two layers, the touch electrodes of the same layer are parallel to each other, and the touch electrodes of different layers are perpendicular to each other.
- Each touch electrode of one layer loads a current signal sequentially, and each touch electrode of the other layer detects whether the current signal changes, according to the distribution position of the touch electrode currently loaded with the current signal and the detected change The distribution position can determine the position of the touch operation.
- the self-capacitive touch electrodes are distributed in an array on the same layer, each touch electrode is loaded with a current signal, and the position of the touch operation can be determined according to the distribution position of the currently detected changed touch electrode.
- FIG 3 is a schematic diagram of a partial structure of a touch display panel in an embodiment of the present application
- Figure 4 is a partial top view of the touch display panel shown in Figure 3, as shown in Figures 3 and 4, the present application provides a
- the touch display panel includes a substrate 10 , a shielding layer 20 , a touch function layer 30 and a plurality of electrode lines 40 .
- the shielding layer 20 is disposed on one side of the substrate 10, and the shielding layer 20 includes a plurality of shielding units arranged in an array.
- the touch function layer 30 is disposed on a side of the shielding layer 20 facing away from the substrate 10 , and the touch function layer 30 includes a plurality of touch electrodes 31 arranged in an array.
- the plurality of electrode lines 40 are in one-to-one correspondence with the plurality of touch electrodes 31 and are electrically connected.
- the plurality of electrode lines 40 include at least one first-type electrode line.
- the first-type electrode line includes a first lead 41 disposed on the same layer as the touch function layer 30 , and is electrically connected to the first lead 41 and is in the same layer as the shielding layer 20 .
- the second lead wire 42 and the shielding unit are spaced and insulated from each other.
- the above-mentioned touch display panel includes a substrate, a shielding layer, a touch function layer and a plurality of electrode lines, and the shielding layer arranged on one side of the substrate includes a plurality of shielding units arranged in an array, which can control the
- the display function layer plays a shielding role to prevent external carriers from interfering with the display function layer.
- the touch function layer disposed on the side of the shielding layer facing away from the substrate includes a plurality of touch electrodes arranged in an array, which can detect touch operations at different positions.
- the plurality of electrode lines are in one-to-one correspondence with the plurality of touch electrodes and are electrically connected.
- the plurality of electrode lines include at least one first-type electrode line.
- the first-type electrode line includes a first lead wire arranged on the same layer as the touch function layer. and a second lead electrically connected to the first lead and provided on the same layer as the shielding layer.
- the second lead and the shielding unit are spaced apart from each other and insulated.
- the touch electrodes can be connected to the touch IC through corresponding electrode lines, and will be connected with the touch control IC.
- the electrode wires arranged in layers of the touch electrodes are transferred to the same layer as the shielding layer, and the electrode wires connected to the touch electrodes are arranged using the gaps on both sides of the shielding unit, which can avoid setting up a separate layer that is arranged to be connected to the touch electrodes.
- the entire touch function layer only needs to set a layer of touch electrodes on the display function layer, which greatly reduces the production process. The process effectively improves the production efficiency, reduces the production cost, and does not affect the shielding effect of the shielding unit on external carriers.
- the material of the substrate 10 may be inorganic materials, such as glass materials such as soda calcium, quartz, and sapphire, and metal materials such as stainless steel, aluminum, and nickel.
- the material of the substrate 10 can also be an organic material, such as polymethyl methacrylate (Polymethyl methacrylate, referred to as: PMMA), polyvinyl alcohol (Polyvinyl alcohol, referred to as: PVA), polyvinyl phenol (Polyvinyl phenol, referred to as: PVP ), polyether sulfone (Polyether sulfone, referred to as: PES), polyimide, polyamide, polyacetal, polycarbonate (Polycarbonate, referred to as: PC), polyethylene terephthalate (Polyethylene terephthalate, Abbreviation: PET), polyethylene naphthalate (Polyethylene naphthalate, abbreviation: PEN), polyimide (polyimide, PI) at least one.
- PMMA polymethyl methacrylate
- the shielding unit may be a metal sheet or a metal mesh, which can effectively shield interference from external carriers.
- the orthographic projection of the touch electrodes 31 on the substrate 10 is one of a rectangle, a circle, and a rhombus, which can be set according to the needs of the touch display panel, so that within the limited space of the touch display panel Realize the detection of touch operation.
- first lead 41 and the second lead 42 are electrically connected through conductive pillars.
- the touch display panel includes a display area AA and a non-display area NA at least partially surrounding the display area AA, and the non-display area NA includes a bonding area BA located on one side of the display area AA.
- the display area AA is the area where the structure with display function is located, generally the middle area of the surface of the substrate 10 .
- the non-display area NA is an area other than the display area AA, generally an edge area surrounding the display area AA.
- the bonding area BA is an area connected to the IC, and is generally an area where the non-display area NA is located on the side of the display area AA.
- the shielding layer 20 and the touch function layer 30 are sequentially stacked and arranged on the display area AA.
- the first lead 41 is arranged in both the display area AA and the non-display area NA
- the second lead 42 is only arranged in the non-display area NA. Lead the electrode line 40 from the display area AA to the non-display area NA through the first lead 41, so that the second lead 42 arranged on the same layer as the shielding layer 20 extends to the bonding area BA on the non-display area NA, which can avoid The shielding unit opened on the display area AA avoids affecting the shielding layer 20 .
- the non-display area NA is provided with a contact hole extending along a direction perpendicular to the touch display panel, and the first lead and the second lead are electrically connected through the contact hole.
- the electrode lines 40 corresponding to the touch electrodes 31 close to the non-display area NA are first-type electrode lines, that is, include a first lead 41 and a second lead 42, and the first lead 41 is arranged at the same time.
- the electrode lines 40 corresponding to the touch electrodes 31 close to the non-display area NA are relatively close to the non-display area NA. , it is convenient to realize that the electrode line 40 leads from the display area AA to the non-display area NA.
- the non-display area NA includes a first sub-area NA1, a second sub-area NA2, a third sub-area NA3, and a fourth sub-area NA4 arranged around the display area AA and connected end to end in sequence.
- the sub-area NA1 is disposed opposite to the third sub-area NA3, the second sub-area NA2 is disposed opposite to the fourth sub-area NA4, and the bonding area BA is located in the first sub-area NA1.
- the first lead wires 41 are arranged in the display area AA and the second sub-area NA2 at the same time.
- the first lead wires 41 are arranged in the display area AA and the third sub-area NA3 at the same time.
- the electrode lines 40 corresponding to the touch electrodes 31 close to the fourth sub-area NA4 are arranged in the display area AA and the fourth sub-area NA4 at the same time.
- the electrode lines 40 corresponding to the touch electrodes 31 near the center of the display area AA are the first type electrode lines, that is, include the first lead 41 and the second lead 42, and the first lead 41 is arranged in the display area at the same time. AA and the non-display area NA where the bonding area BA is located. Taking FIG. 4 as an example, the first lead 41 is arranged in the display area AA and the first sub-area NA1 at the same time.
- the electrode lines 40 corresponding to the touch electrodes 31 near the center of the display area AA are relatively far away from the non-display area NA, and the first lead wire 41 is arranged in the non-display area NA where the display area AA and the bonding area BA are located at the same time, so that the electrode lines can be easily connected. 40 is electrically connected to the touch IC in the bonding area BA.
- the electrode lines 40 corresponding to the touch electrodes 31 near the center of the display area AA are second-type electrode lines, and the second-type electrode lines include third lead wires 43 disposed on the same layer as the touch function layer 30 .
- the electrode lines 40 corresponding to the touch electrodes 31 are arranged on the shielding layer 20 and the touch function layer 30 at the same time, and the wiring design is relatively easy.
- the first end of the first lead 41 extends to the corresponding touch electrode 31 in the display area AA
- the first end of the second lead 42 extends to the non-display area NA to
- the bonding area BA, the second end of the first lead 41 and the second end of the second lead 42 are in the direction perpendicular to the touch display panel in the display area or the non-display Overlap settings in the zone.
- the third lead 43 is arranged in the display area AA and the non-display area NA at the same time, and the first end of the third lead 43 extends to the corresponding contact in the display area AA.
- the control electrode 31, the second end of the third lead 43 extends from the non-display area NA to the bonding area BA.
- the proportion of the first type electrode lines and the second type electrode lines among the electrode lines 40 corresponding to the touch electrodes 31 can be determined according to the size of the gap between the touch electrodes 31 . If the gap between the touch electrodes 31 is large, the proportion of the second type of electrode lines is large. If the gap between the touch electrodes 31 is small, the proportion of the first type of electrode lines is large.
- the first lead 41 is only arranged on the display area AA, and the second lead 42 is arranged on both the display area AA and the non-display area NA.
- the touch display panel further includes an anode layer 60 , a light emitting layer group 50 and a cathode layer 70 stacked on the side of the shielding layer 20 facing away from the substrate 10 .
- the light emitting layer group 50 includes a plurality of light emitting units arranged in the same layer and spaced apart from each other.
- the anode layer 60 includes a plurality of anodes corresponding to the plurality of light emitting units and electrically connected.
- the cathode layer 70 is electrically connected to each light emitting unit.
- the touch function layer 30 is located on the side of the cathode layer 70 facing away from the light-emitting layer group 50 , that is, a plurality of touch electrodes 31 are separately arranged in one layer.
- the light emitting layer group 50 includes an organic electroluminescent material layer, and at least one of a hole injection layer, a hole transport layer, an electron blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer.
- the multiple light emitting units are arranged in multiple rows along the first direction, and are arranged in multiple columns along the second direction perpendicular to the first direction.
- the touch display panel further includes a pixel definition layer.
- the pixel definition layer has a plurality of through openings corresponding to the plurality of light emitting units in the display area AA, and each through opening exposes at least a part of the corresponding anode layer.
- the touch display panel further includes a support pillar layer, the support pillar layer includes a plurality of support pillars in the display area AA, and the support pillars are disposed on the side of the pixel definition layer away from the substrate 10 .
- the touch display panel further includes an encapsulation layer, and the encapsulation layer is disposed on a side of the cathode layer 70 away from the substrate 10 .
- the encapsulation layer may include an inorganic encapsulation layer and an organic encapsulation layer.
- the inorganic encapsulation layer can effectively block outside water and oxygen from invading the light-emitting layer group 50, and the organic encapsulation layer can realize planarization and weaken the stress between the inorganic encapsulation layers.
- the edge of the encapsulation layer is located on the side of the non-display area NA close to the display area AA.
- the touch function layer 30 is located on the side of the cathode layer 70 facing away from the light-emitting layer group 50, if the first lead 41 is arranged in the display area AA and the non-display area NA at the same time, the second lead 42 is only arranged on the non-display area NA. , the electrode wires 40 will not penetrate the encapsulation layer, which is beneficial to block the outside water and oxygen from invading the light emitting layer group 50 .
- the touch display panel further includes a driving circuit layer 80 disposed between the anode layer 60 and the shielding layer 20 .
- the driving circuit layer 80 includes a plurality of driving units corresponding to a plurality of light emitting units, and each driving unit includes a transistor and a storage capacitor.
- the transistor may be a thin film transistor, such as a top gate thin film transistor, a bottom gate thin film transistor or a double gate thin film transistor.
- the material of the thin film transistor may be amorphous silicon semiconductor material, low temperature polysilicon semiconductor material, metal oxide semiconductor material, organic semiconductor material or other types of semiconductor materials.
- the transistor has a first terminal, a second terminal and a control terminal, the control terminal is the gate of the transistor, one of the first terminal and the second terminal is the source of the transistor, and one of the first terminal and the second terminal The other is the drain of the transistor.
- the driving circuit layer 80 may include a semiconductor layer, a gate insulating layer, a gate layer, an interlayer dielectric layer and a source-drain metal layer stacked on the substrate 10 in order to form a top-gate thin film transistor.
- the driving circuit layer 80 may also include a gate layer, a gate insulating layer, a semiconductor layer, an interlayer dielectric layer, and a source-drain metal layer stacked in sequence to form a bottom-gate thin film transistor.
- the driving circuit layer 80 may also include a semiconductor layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer and a source-drain metal layer, forming a double gate type thin film transistor.
- the driving circuit layer 80 further includes a passivation layer, and the passivation layer is disposed on a side of the source-drain metal layer away from the substrate 10 to protect the source-drain metal layer.
- the driving circuit layer 80 also includes a buffer layer, the buffer layer is disposed between the semiconductor layer and the substrate 10, and both the semiconductor layer and the gate layer are located on the side of the buffer layer away from the substrate 10, so as to relieve the driving circuit layer 80. lattice mismatch with the substrate 10.
- the driving circuit layer 80 also includes a planarization layer, which is disposed on the side of the source-drain metal layer away from the substrate 10 to provide a planarized surface for the arrangement of the light-emitting layer group 50 , the anode layer 60 and the cathode layer 70 .
- FIG. 5 is a schematic diagram of a partial structure of a touch display panel in another embodiment of the present application.
- FIG. 6 is a partial top view of the touch display panel shown in FIG. 5. As shown in FIGS. 5 and 6, the touch electrodes 31 and the anode 61 are arranged in the same layer and are spaced apart from each other.
- each touch electrode 31 is disposed between two adjacent anodes 61 in the first direction.
- the touch electrodes 31 are arranged between the gaps of the anodes 61 , so as to be arranged on the same layer as the anodes 61 without affecting the anodes 61 .
- a plurality of touch electrodes 31 are arranged at intervals along the second direction.
- the plurality of touch electrodes 31 are arranged at intervals along the second direction, so that the electrode lines 40 corresponding to the touch electrodes 31 are arranged parallel to each other.
- the display area AA is provided with a contact hole extending along a direction perpendicular to the touch display panel, and the first lead 41 and the second lead 42 are electrically connected through the contact hole.
- the first lead 41 is only arranged in the display area AA
- the second lead 42 is arranged in both the display area AA and the non-display area NA.
- Both the shielding unit and the anode are on the display area AA, and the electrode wire 40 is led from the anode layer 60 to the shielding layer 20 on the display area AA.
- the electrode wire 40 will not penetrate the packaging layer, which is beneficial to block the outside water and oxygen from invading the light-emitting layer group 50 .
- the second-type electrode line includes a third lead 43 disposed on the same layer as the touch function layer.
- the electrode lines 40 corresponding to the touch electrodes 31 are arranged on the shielding layer 20 and the anode layer 60 at the same time, and the wiring design is relatively easy.
- a drive circuit layer 80 is usually provided between the anode layer 60 and the shielding layer 20, and the distance between the electrode wires 40 arranged on the same layer as the anode layer 60 and the electrode wires 40 arranged on the same layer as the shielding layer 20 is relatively far, and there are It is beneficial to reduce the mutual interference between the electrode wires 40 .
- the electrode wires 40 close to the bonding area BA are the second type electrode wires, and the electrode wires 40 away from the bonding area BA are the first type electrode wires.
- the plurality of electrode lines 40 includes a plurality of first-type electrode lines and a plurality of second-type electrode lines.
- FIG. 7 is another partial top view of the touch display panel shown in FIG. 5. As shown in FIG. The contact electrodes 31 electrically connected with the two types of electrode wires are alternately arranged.
- the touch electrodes 31 electrically connected to the first type electrode lines and the touch electrodes 31 electrically connected to the second type electrode lines are alternately arranged in the column direction, and the electrodes electrically connected to two adjacent touch electrodes 31
- the wires 40 are far apart, which is beneficial to reduce the mutual interference between the electrode wires 40 .
- FIG. 8 is another partial top view of the touch display panel shown in FIG. 5. As shown in FIG. 8, among two adjacent columns of touch electrodes 31, the contact electrodes 31 electrically connected to the first type electrode lines, and The contact electrodes 31 electrically connected with the second type electrode wires are arranged in a staggered manner.
- the touch electrodes 31 electrically connected to the first type electrode lines and the touch electrodes 31 electrically connected to the second type electrode lines are all staggered in the row and column direction, and the electrodes electrically connected to two adjacent touch electrodes 31 The distance between the wires 40 reaches the furthest, which can minimize the mutual interference between the electrode wires 40 .
- FIG. 9 is a schematic diagram of a partial structure between a display area and a non-display area in a touch display panel in an embodiment of the present application.
- the touch display panel further includes a dam structure 90,
- the dam structure 90 is disposed on the substrate 10 and located in the non-display area NA, and the second lead 42 passes through the side of the dam structure 90 close to the substrate 10 .
- the second lead 42 is located below the dam structure 90 and between the dam structure 90 and the substrate 10 .
- the dam structure 90 by disposing the dam structure 90 on the non-display area NA, it is possible to avoid cracks at the edges during cutting of the touch display panel and prevent the cracks from extending to the display area AA.
- the second lead wire 42 passes under the dam structure 90 and then is electrically connected to the chip on the bonding area, which can prevent the electrode wire 40 from turning over from the dam structure 90 . If the electrode lines 40 pass over the dams 90 , the difference in height of the dams 90 will result in a thicker photoresist deposited to form the electrode lines 40 , and the photoresist is likely to be insufficiently exposed and remain, resulting in a short circuit between the electrode lines 40 .
- the plurality of electrode wires 40 are all the first type electrode wires.
- a plurality of electrode lines 40 are the first type of electrode lines. At this time, all the electrode lines 40 pass under the embankment structure 90, which can effectively prevent the short circuit or overexposure of the electrode lines 40 caused by the photoresist residue that occurs when the electrode lines 40 cross the embankment. lead to increased production costs.
- the non-display area NA includes a bending area, which is located between the display area AA and the bonding area BA, so as to bend the bonding area BA of the display panel to the back side of the display area AA, so that The touch display panel satisfies the requirement of edge display and increases the screen-to-body ratio.
- the electrode lines 40 are first transferred to the wiring layer before passing through the bending area, and then transferred back to the shielding layer 20 after passing through the bending area, so as to uniformly protect the wiring on the bending area.
- an embodiment of the present application further provides a touch display device, which includes the touch display panel in the above embodiments.
- the touch display device in the embodiment of the present application can be an OLED display device, a QLED display device, an electronic paper, a mobile phone, a tablet computer, a TV set, a monitor, a notebook computer, a digital photo frame, a navigator, a wearable device, etc.
- Any product or component with a display function, such as an Internet of Things device, is not limited by the embodiments disclosed in this application.
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Abstract
本申请涉及一种触控显示面板及触控显示装置,包括:衬底;屏蔽层,设置于所述衬底的一侧,所述屏蔽层包括阵列排布的多个屏蔽单元;触控功能层,设置于所述屏蔽层背向所述衬底的一侧,所述触控功能层包括阵列排布的多个触控电极;多条电极线,与所述多个触控电极一一对应且电性连接;其中,多条所述电极线包括至少一条第一类型电极线,所述第一类型电极线包括与所述触控功能层同层设置的第一引线,以及与所述第一引线电性连接且与所述屏蔽层同层设置的第二引线;所述第二引线与所述屏蔽单元彼此间隔且绝缘设置。
Description
相关申请
本申请要求2021年12月13日申请的,申请号为2021115181512,名称为“触控显示面板及触控显示装置”的中国专利申请的优先权,在此将其全文引入作为参考。
本申请涉及显示技术领域,特别是涉及一种触控显示面板及触控显示装置。
随着显示技术的发展,具有触控功能的显示装置(如触摸显示器)作为一种简单、方便、自然的人机交互方式,已经广泛应用于手机、电脑等电子设备中。
触控显示面板包括触控电极以及与触控电极连接的电极线,触控电极通过电极线与触控IC(integrated circuit,集成电路)连接。
然而,自容式触控显示面板中触控电极连接的电极线较多,需要单独设置一层布置电极线,生产成本较高。
发明内容
基于此,有必要针对上述技术问题,提供一种能够降低生产成本的触控显示面板及触控显示装置。
本申请提供一种触控显示面板,包括:
衬底;
屏蔽层,设置于所述衬底的一侧,所述屏蔽层包括阵列排布的多个屏蔽单元;
触控功能层,设置于所述屏蔽层背向所述衬底的一侧,所述触控功能层包括阵列排布的多个触控电极;
多条电极线,与所述多个触控电极一一对应且电性连接;
其中,所述多条电极线包括至少一条第一类型电极线,所述第一类型电极线包括与所述触控功能层同层设置的第一引线,以及与所述第一引线电性连接且与所述屏蔽层同层设置的第二引线;
所述第二引线与所述屏蔽单元彼此间隔且绝缘设置。
上述触控显示面板,包括衬底、屏蔽层、触控功能层和多条电极线,设置于衬底一侧的屏蔽层包括阵列排布的多个屏蔽单元,可以对触控显示面板中的显示功能层起到屏蔽作用,避免外界载流子对显示功能层造成干扰。设置于屏蔽层背向衬底一侧的触控功能层包括阵列排布的多个触控电极,可以对不同位置的触摸操作进行检测。与多个触控电极一一对应且电性连接的多条电极线包括至少一条第一类型电极线,第一类型电极线包括与触控功能层同层设置的第一引线,以及与第一引线电性连接且与屏蔽层同层设置的第二引线,第二引线与屏蔽单元彼此间隔且绝缘设置,触控电极可以通过对应的电极线与触控IC连接,并且将与触控电极分层布置的电极线转移到与屏蔽层同层布置,利用屏蔽单元两侧的空隙布置与触控电极连接的电极线,可以避免单独设置一层布置与触控电极连接的电极线,同时也可以避免在这一层电极线与触控电极之间铺设绝缘材料,整个触控功能层只需要在显示功能层上单独设置一层触控电极即可,大幅减少了生产工艺的流程,有效提高了生产效率,降低了生产成本,并且不会影响到屏蔽单元对外界载流子的屏蔽作用。
在本实施例中,通过进一步将触控电极转移到与阳极层同层布置,利用阳极层中各个阳极两侧的空隙布置触控电极,可以不需要再单独设置一层布置触控电极,可以进一步减少生产工艺的流程,提高生产效率和降低生产成本,并且不会影响到阳极向发光单元注入电流。具体地,触控电极设置于阳极的间隙之间,可以实现与阳极同层布置,并且不会影响到阳极。
在其中一个实施例中,多条所述电极线还包括至少一条第二类型电极线,所述第二类型电极线包括与所述触控功能层同层设置的第三引线。
触控电极对应的电极线同时布置在屏蔽层和阳极层,走线设计比较容易。
与所述第一类型电极线电性连接的触控控电极,和与所述第二类型电极线电性连接的触控电极错开设置;。与第一类型电极线电性连接的触控电极、与第二类型电极线电性连接的触控电极在列方向上交替排布,相邻两个触控电极电性连接的电极线间隔较远,有利于降低电极线之间的相互干扰。
与第一类型电极线电性连接的触控电极、与第二类型电极线电性连接的触控电极在行列方向上均错开设置,相邻两个触控电极电性连接的电极线间隔达到最远,可以最大程度降低电极线之间的相互干扰。
而多条电极线均为第一类型电极线,此时所有电极线从堤坝结构下方通过,可以有效避免电极线在翻越堤坝时出现的光刻胶残留导致电极线短路或者过度曝光导致生产成本增高的问题。
在其中一个实施例中,所述触控显示面板包括显示区和至少部分围绕显示区的非显示 区;
所述显示区设有沿垂直于所述触控显示面板方向延伸的接触孔,所述第一引线和所述第二引线通过所述接触孔电导通。
屏蔽单元和阳极均在显示区上,电极线在显示区上从阳极层引到屏蔽层,电极线不会贯穿封装层,有利于阻隔外界的水氧入侵发光层组。
在其中一个实施例中,所述触控显示面板还包括:
堤坝结构,设置于所述衬底上,且位于所述非显示区;
所述第二引线从所述堤坝结构之靠近所述衬底的一侧通过。
在本实施例中,通过在非显示区上设有堤坝结构,可以避免触控显示面板切割时在边缘产生裂纹,并阻挡裂纹向显示区延伸。第二引线从堤坝结构的下方通过后电性连接于邦定区上的芯片,可以避免电极线从堤坝上翻过。如果电极线从堤坝上翻过,则堤坝的高度差导致形成电极线沉积的光刻胶较厚,光刻胶容易曝光不充分而出现残留,进而导致电极线之间短路。而且光刻胶充分曝光消耗的产能较多,生产成本较高。本实施例通过将电极线从堤坝结构下方通过,可以避免电极线在翻越堤坝时出现的光刻胶残留导致电极线短路或者过度曝光导致生产成本增高的问题。
在其中一个实施例中,所述非显示区包括弯折区,所述电极线从所述堤坝结构之靠近衬底的一侧经过后,从所述屏蔽层转移至所述弯折区的走线层上,再转移回所述屏蔽层。
电极线在经过弯折区之前先转移到走线层上,在经过弯折区之后再转移回屏蔽层,以便对弯折区上的走线统一进行保护。
在其中一个实施例中,所述触控显示面板还包括:
驱动电路层,设置于所述阳极层和所述屏蔽层之间。
阳极层和屏蔽层之间设有驱动电路层,与阳极层同层布置的电极线和与屏蔽层同层布置的电极线之间的间隔较远,有利于减小电极线之间的相互干扰。
本申请还提供一种触控显示装置,包括上述任一实施例所述的触控显示面板。
为了更清楚地说明本申请实施例或传统技术中的技术方案,下面将对实施例或传统技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据公开的附图获得其他的附图。
图1为相关技术中自容式触控显示面板的局部结构示意图;
图2为图1所示的自容式触控显示面板的局部俯视图;
图3为本申请一实施例中的触控显示面板的局部结构示意图;
图4为图3所示的触控显示面板的局部俯视图;
图5为本申请另一实施例中的触控显示面板的局部结构示意图;
图6为图5所示的触控显示面板的一种局部俯视图;
图7为图5所示的触控显示面板的另一种局部俯视图;
图8为图5所示的触控显示面板的又一种局部俯视图;
图9本申请一实施例中的触控显示面板中显示区和非显示区之间的局部结构示意图。
根据本文中所描述的本发明概念的实施方式的电子或电气装置和/或任何其它相关装置或部件(例如,包括显示面板和显示面板驱动器的显示装置,其中,显示面板驱动器还包括驱动控制器、栅极驱动器、伽马基准电压发生器、数据驱动器和发射驱动器)可利用任何适当的硬件、固件(例如专用集成电路)、软件或软件、固件和硬件的组合来实现。例如,这些装置的各种部件可形成在一个集成电路(IC)芯片上或形成在单独的IC芯片上。另外,这些装置的各种部件可实现在柔性印刷电路膜、带载封装(TCP)、印刷电路板(PCB)上或形成在一个衬底上。另外,这些装置的各种部件可为在一个或更多个计算装置中在一个或更多个处理器上运行从而执行计算机程序指令以及与其它***部件交互以执行本文中所描述的各种功能的进程或线程。计算机程序指令存储在存储器中,该存储器可使用标准存储装置(例如,如随机存取存储器(RAM)实现在计算装置中。计算机程序指令也可存储在其它非暂时性计算机可读介质(例如,如CD-ROM、闪存驱动器等)中。而且,本领域技术人员应该认识到,各种计算装置的功能可组合或集成到单个计算装置中,或者特定计算装置的功能可分布在一个或更多个其它计算装置上,而不背离本发明概念的示例性实施方式的精神和范围。
触控显示装置为具有触控功能的显示装置,如触摸屏、触摸显示器等。触控显示装置包括触控显示面板,触控显示面板包括触控功能层和显示功能层,触控功能层分为自容式和互容式两种。
图1为相关技术中自容式触控显示面板的局部结构示意图,如图1所示,自容式触控显示面板包括显示功能层102和触控功能层,触控功能层包括在显示功能层102上分层设置的电极子层104和走线子层106、以及位于电极子层104和走线子层106之间的绝缘子层108。图2为图1所示的自容式触控显示面板的局部俯视图,如图2所示,电极子层104 包括同层布置且呈阵列分布的多个触控电极105。走线子层106包括同层布置且彼此平行的多条电极线107。多条电极线107与多个触控电极105一一对应,各条电极线107位于对应的触控电极105的下方,并通过贯穿绝缘子层108的导电柱109与对应的触控电极105电连接。
触控电极105和电极线107分布在不同层,并且触控电极105和电极线107之间需要铺设绝缘材料,导致整个触控功能层需要在显示功能层上依次设置走线子层106、绝缘子层108、电极子层104三个子层才能形成。这样生产工艺的流程较多,生产效率较低,生产成本较高。
如果将触控电极105和电极线107分布在同一层,则电极线107位于相邻两个触控电极105之间。由于每个触控电极105都有一条对应的电极线107,并且各条电极线107之间需要彼此间隔设置,因此此时相邻两个触控电极105之间的距离较大,有可能影响到触控电极105对触摸操作的检测效果,导致相邻两个触控电极105之间存在检测不到触摸操作的区域。因而,在实际应用中,自容式触控显示面板中只能单独设置一层与触控电极电连接的电极线,从而造成自容式触控显示面板的生产成本较高。
为解决上述问题,本申请实施例提供了一种触控显示面板及触控显示装置,触控显示面板包括衬底、底部屏蔽金属(Bottom Shelter Metal,简称BSM)层(以下简称屏蔽层)、触控功能层和多条电极线。屏蔽层设置于衬底的一侧,屏蔽层包括呈阵列排布的多个屏蔽单元,触控功能层设置于屏蔽层背向衬底的一侧,触控功能层包括呈阵列排布的多个触控电极,多条电极线与多个触控电极一一对应且电性连接,多条电极线包括至少一条第一类型电极线,第一类型电极线包括与触控功能层同层设置的第一引线,以及与第一引线电性连接且与屏蔽层同层设置的第二引线,第二引线与屏蔽单元彼此间隔且绝缘设置。通过将与触控电极分层布置的电极线转移到与屏蔽层同层布置,利用屏蔽单元两侧的空隙布置与触控电极连接的电极线,可以避免单独设置一层与触控电极连接的电极线,同时也可以避免在这一层电极线与触控电极之间铺设绝缘材料,整个触控功能层只需要在显示功能层上单独设置一层触控电极即可,大幅减少了生产工艺的流程,有效提高了生产效率,降低了生产成本,并且不会影响到屏蔽单元对外界载流子的屏蔽作用。
本申请实施例提供的触控显示面板,如OLED(Organic Light-Emitting Diode,有机发光二极管)显示面板,可以应用于手机终端、平板电脑、笔记本电脑、可穿戴设备、车载设备等电子设备。
为方便理解,在详细展开之前,先对一些内容进行说明:
屏蔽层:OLED按照驱动方式,可以划分为AMOLED(Active Matrix Organic Light-Emitting Diode,主动式有机发光二极管)和PMOLED(Passive Matrix Organic Light-Emitting Diode,被动式有机发光二极管)。AMOLED使用TFT(Thin Film Transistor,薄膜场效应晶体管)阵列来控制OLED像素。为了屏蔽外界载流子对TFT阵列的影响,会在衬底和显示功能层之间设置屏蔽层。具体地,屏蔽层包括与TFT一一对应的屏蔽单元,各屏蔽单元位于对应的TFT和衬底之间。其中,衬底为提供给半导体材料沉积的载体,可以对半导体材料沉积形成的膜层起到支撑作用。
自容式触控:触控分为自容式和互容式两种。互容式触控电极分布在两层,同一层的触控电极彼此平行,不同层的触控电极彼此垂直。其中一层的各个触控电极依次加载电流信号,由另一层的各个触控电极检测电流信号是否发生变化,根据当前加载电流信号的触控电极的分布位置和检测到变化的触控电极的分布位置,即可确定出触摸操作的位置。自容式触控电极呈阵列分布在同一层,每个触控电极上分别加载电流信号,根据当前检测到变化的触控电极的分布位置,即可确定出触摸操作的位置。
图3为本申请一实施例中的触控显示面板的局部结构示意图,图4为图3所示的触控显示面板的局部俯视图,如图3和图4所示,本申请提供了一种触控显示面板,包括衬底10、屏蔽层20、触控功能层30和多条电极线40。屏蔽层20设置于衬底10的一侧,屏蔽层20包括呈阵列排布的多个屏蔽单元。触控功能层30设置于屏蔽层20背向衬底10的一侧,触控功能层30包括呈阵列排布的多个触控电极31。多条电极线40与多个触控电极31一一对应且电性连接。多条电极线40包括至少一条第一类型电极线,第一类型电极线包括与触控功能层30同层设置的第一引线41,以及与第一引线41电性连接且与屏蔽层20同层设置的第二引线42。第二引线42与屏蔽单元彼此间隔且绝缘设置。上述触控显示面板,包括衬底、屏蔽层、触控功能层和多条电极线,设置于衬底一侧的屏蔽层包括阵列排布的多个屏蔽单元,可以对触控显示面板中的显示功能层起到屏蔽作用,避免外界载流子对显示功能层造成干扰。设置于屏蔽层背向衬底一侧的触控功能层包括阵列排布的多个触控电极,可以对不同位置的触摸操作进行检测。多条电极线与多个触控电极一一对应且电性连接,多条电极线包括至少一条第一类型电极线,第一类型电极线包括与触控功能层同层设置的第一引线,以及与第一引线电性连接且与屏蔽层同层设置的第二引线,第二引线与屏蔽单元彼此间隔且绝缘设置,触控电极可以通过对应的电极线与触控IC连接,并且将与触控电极分层布置的电极线转移到与屏蔽层同层布置,利用屏蔽单元两侧的空隙布置与触控电极连接的电极线,可以避免单独设置一层被布置为与触控电极连接的电极线,同时也可以避免在这一层电极线与触控电极之间铺设绝缘材料,整个触控功能层只需要在显示功能层上单独设置一层触控电极即可,大幅减少了生产工艺的流程,有效提高了生产 效率,降低了生产成本,并且不会影响到屏蔽单元对外界载流子的屏蔽作用。
具体地,衬底10的材料可以为无机材料,如钠钙、石英、蓝宝石等玻璃材料,不锈钢、铝、镍等金属材料。衬底10的材料也可以为有机材料,如聚甲基丙烯酸甲酯(Polymethyl methacrylate,简称:PMMA)、聚乙烯醇(Polyvinyl alcohol,简称:PVA)、聚乙烯基苯酚(Polyvinyl phenol,简称:PVP)、聚醚砜(Polyether sulfone,简称:PES)、聚酰亚胺、聚酰胺、聚缩醛、聚碳酸酯(Poly carbonate,简称:PC)、聚对苯二甲酸乙二酯(Polyethylene terephthalate,简称:PET)、聚萘二甲酸乙二酯(Polyethylene naphthalate,简称:PEN)、聚酰亚胺(polyimide,PI)中的至少一种。
示例性地,屏蔽单元可以为金属片或者金属网,可以有效屏蔽外界载流子的干扰。
示例性地,触控电极31在衬底10上的正投影为矩形、圆形、菱形中的一种,具体可以根据触控显示面板的需要进行设置,以在触控显示面板的有限空间内实现触控操作的检测。
在实际应用中,第一引线41和第二引线42之间通过导电柱电性连接。
具体地,触控显示面板包括显示区AA和至少部分围绕显示区AA的非显示区NA,非显示区NA包括位于显示区AA一侧的邦定区BA。其中,显示区AA为具有显示功能的结构所在的区域,一般为衬底10表面的中间区域。非显示区NA为除显示区AA之外的区域,一般为环绕显示区AA的边缘区域。邦定区BA为与IC连接的区域,一般为非显示区NA位于显示区AA一侧的区域。
相应地,屏蔽层20和触控功能层30依次层叠布置在显示区AA上。在一个实施例中,第一引线41同时布置在显示区AA和非显示区NA,第二引线42仅布置在非显示区NA。通过第一引线41将电极线40从显示区AA引到非显示区NA,使得与屏蔽层20同层布置的第二引线42在非显示区NA上延伸至邦定区BA,可以最大程度避开在显示区AA上的屏蔽单元,避免对屏蔽层20造成影响。
相应地,非显示区NA设有沿垂直于触控显示面板方向延伸的接触孔,第一引线和第二引线通过接触孔电导通。
示例性地,如图4所示,靠近非显示区NA的触控电极31对应的电极线40为第一类型电极线,即包括第一引线41和第二引线42,第一引线41同时布置在显示区AA和与该第一引线41距离最近的非显示区NA。利用靠近非显示区NA的触控电极31对应的电极线40距离非显示区NA比较近,通过将第一引线41同时布置在显示区AA和与该第一引线41距离最近的非显示区NA,可以方便地实现电极线40从显示区AA引到非显示区NA。
具体地,如图4所示,非显示区NA包括围绕显示区AA设置且依次首尾连接的第一 子区NA1、第二子区NA2、第三子区NA3和第四子区NA4,第一子区NA1与第三子区NA3相对设置,第二子区NA2和第四子区NA4相对设置,邦定区BA位于的第一子区NA1中。
相应地,靠近第二子区NA2的触控电极31对应的电极线40中,第一引线41同时布置在显示区AA和第二子区NA2。靠近第三子区NA3的触控电极31对应的电极线40中,第一引线41同时布置在显示区AA和第三子区NA3。靠近第四子区NA4的触控电极31对应的电极线40中,第一引线41同时布置在显示区AA和第四子区NA4。
在一种实现方式中,靠近显示区AA中心的触控电极31对应的电极线40为第一类型电极线,即包括第一引线41和第二引线42,第一引线41同时布置在显示区AA和邦定区BA所在的非显示区NA。以图4为例,第一引线41同时布置在显示区AA和第一子区NA1。靠近显示区AA中心的触控电极31对应的电极线40距离非显示区NA比较远,将第一引线41同时布置在显示区AA和邦定区BA所在的非显示区NA,可以方便电极线40与邦定区BA的触控IC电性连接。
在另一种实现方式中,靠近显示区AA中心的触控电极31对应的电极线40为第二类型电极线,第二类型电极线包括与触控功能层30同层设置的第三引线43。触控电极31对应的电极线40同时布置在屏蔽层20和触控功能层30,走线设计比较容易。
在一个实施例中,所述第一引线41的第一端在所述显示区AA延伸至对应的触控电极31,所述第二引线42的第一端在所述非显示区NA延伸至所述邦定区BA,所述第一引线41的第二端和所述第二引线42的第二端在垂直于所述触控显示面板的方向上在所述显示区或者所述非显示区中重叠设置。在一个实施例中,所述第三引线43同时布置在所述显示区AA和所述非显示区NA中,所述第三引线43的第一端在所述显示区AA延伸至对应的触控电极31,所述第三引线43的第二端在所述非显示区NA延伸至所述邦定区BA。
在实际应用中,触控电极31对应的电极线40中第一类型电极线和第二类型电极线的占比,可以根据触控电极31之间的间隙大小确定。如果触控电极31之间的间隙较大,则第二类型电极线的占比较多。如果触控电极31之间的间隙较小,则第一类型电极线的占比较多。
在另一个实施例中,第一引线41仅布置在显示区AA上,第二引线42同时布置在显示区AA和非显示区NA。
在一个实施例中,如图3所示,触控显示面板还包括层叠布置于屏蔽层20背向衬底10的一侧的阳极层60、发光层组50和阴极层70。发光层组50包括同层布置且彼此间隔的多个发光单元。阳极层60包括与多个发光单元一一对应且电性连接的多个阳极。阴极 层70与各个发光单元电性连接。
在实际应用中,通过阳极层60和阴极层70向发光层组50注入电流,驱动发光层组50发光,实现显示功能。
在本实施例中,如图3所示,触控功能层30位于阴极层70背向发光层组50的一侧,即多个触控电极31单独设置一层。
具体地,发光层组50包括有机电致发光材料层、以及空穴注入层、空穴传输层、电子阻挡层、空穴阻挡层、电子传输层和电子注入层中的至少一个。
示例性地,多个发光单元沿第一方向排布成多行,沿与第一方向垂直的第二方向排布成多列。
进一步地,触控显示面板还包括像素定义层,像素定义层在显示区AA具有与多个发光单元一一对应设置的多个贯通开口,每个贯通开口暴露对应的阳极层的至少部分区域。
进一步地,触控显示面板还包括支撑柱层,支撑柱层在显示区AA包括多个支撑柱,且支撑柱设置于像素定义层远离衬底10的一侧。
示例性地,触控显示面板还包括封装层,封装层设置于阴极层70远离衬底10的一侧。具体地,封装层可以包括无机封装层和有机封装层。其中,无机封装层可以有效阻隔外界的水氧入侵发光层组50,有机封装层可以实现平坦化和减弱无机封装层之间的应力。
在实际应用中,封装层的边缘位于非显示区NA靠近显示区AA的一侧。当触控功能层30位于阴极层70背向发光层组50的一侧时,如果第一引线41同时布置在显示区AA和非显示区NA,第二引线42仅布置在非显示区NA上,则电极线40不会贯穿封装层,有利于阻隔外界的水氧入侵发光层组50。
示例性地,触控显示面板还包括驱动电路层80,驱动电路层80设置于阳极层60和屏蔽层20之间。
具体地,驱动电路层80包括与多个发光单元一一对应的多个驱动单元,每个驱动单元包括晶体管和存储电容。示例性地,晶体管可以为薄膜晶体管,如顶栅型薄膜晶体管、底栅型薄膜晶体管或者双栅型薄膜晶体管。薄膜晶体管的材料可以为非晶硅半导体材料、低温多晶硅半导体材料、金属氧化物半导体材料、有机半导体材料或者其他类型的半导体材料。
具体地,晶体管具有第一端、第二端和控制端,控制端为晶体管的栅极,第一端和第二端中的一个为晶体管的源极,且第一端和第二端中的另一个为晶体管的漏极。
相应地,驱动电路层80可以包括依次层叠在衬底10上的半导体层、栅极绝缘层、栅极层、层间电介质层和源漏金属层,形成顶栅型薄膜晶体管。驱动电路层80也可以包括 依次层叠的栅极层、栅极绝缘层、半导体层、层间电介质层和源漏金属层,形成底栅型薄膜晶体管。驱动电路层80还可以包括半导体层、第一栅极绝缘层、第一栅极层、第二栅极绝缘层、第二栅极层、层间电介质层和源漏金属层,形成双栅型薄膜晶体管。
进一步地,驱动电路层80还包括钝化层,钝化层设置于源漏金属层远离衬底10的一侧,对源漏金属层进行保护。
进一步地,驱动电路层80还包括缓冲层,缓冲层设置于半导体层和衬底10之间,且半导体层和栅极层均位于缓冲层远离衬底10的一侧,以缓解驱动电路层80和衬底10之间的晶格失配。
进一步地,驱动电路层80还包括平坦化层,平坦化层设置于源漏金属层远离衬底10的一侧,为发光层组50、阳极层60和阴极层70的设置提供平坦化表面。
图5为本申请另一实施例中的触控显示面板的局部结构示意图,图6为图5所示的触控显示面板的一种局部俯视图,如图5和图6所示,触控电极31与阳极61同层布置且彼此间隔开。
在本实施例中,通过进一步将触控电极转移到与阳极层同层布置,利用阳极层中各个阳极两侧的空隙布置触控电极,可以不需要再单独设置一层布置触控电极,可以进一步减少生产工艺的流程,提高生产效率和降低生产成本,并且不会影响到阳极向发光单元注入电流。
示例性地,如图6所示,每一触控电极31在第一方向上设置于相邻的两个阳极61之间。
触控电极31设置于阳极61的间隙之间,实现与阳极61同层布置,且不会影响到阳极61。
进一步地,如图6所示,多个触控电极31沿第二方向间隔排布。
多个触控电极31沿第二方向间隔排布,方便触控电极31对应的电极线40彼此平行设置。示例性地,显示区AA设有沿垂直于触控显示面板方向延伸的接触孔,第一引线41和第二引线42通过接触孔电导通。
具体地,第一引线41仅布置在显示区AA,第二引线42同时布置在显示区AA和非显示区NA。
屏蔽单元和阳极均在显示区AA上,电极线40在显示区AA上从阳极层60引到屏蔽层20,电极线40不会贯穿封装层,有利于阻隔外界的水氧入侵发光层组50。
进一步地,如图6所示,当多条电极线40还包括至少一条第二类型电极线时,第二类型电极线包括与触控功能层同层设置的第三引线43。
触控电极31对应的电极线40同时布置在屏蔽层20和阳极层60,走线设计比较容易。另外,阳极层60和屏蔽层20之间通常设有驱动电路层80,与阳极层60同层布置的电极线40和与屏蔽层20同层布置的电极线40之间的间隔较远,有利于减小电极线40之间的相互干扰。
在实际应用中,靠近邦定区BA的电极线40为第二类型电极线,远离邦定区BA的电极线40为第一类型电极线。
示例性地,如图6所示,多条电极线40包括多条第一类型电极线和多条第二类型电极线。
图7为图5所示的触控显示面板的另一种局部俯视图,如图7所示,在一列触控电极31中,与第一类型电极线电性连接的接触电极31,和与第二类型电极线电性连接的接触电极31交替排布。
与第一类型电极线电性连接的触控电极31、与第二类型电极线电性连接的触控电极31在列方向上交替排布,相邻两个触控电极31电性连接的电极线40间隔较远,有利于降低电极线40之间的相互干扰。
图8为图5所示的触控显示面板的又一种局部俯视图,如图8所示,相邻两列触控电极31中,与第一类型电极线电性连接的接触电极31,和与第二类型电极线电性连接的接触电极31错开设置。
与第一类型电极线电性连接的触控电极31、与第二类型电极线电性连接的触控电极31在行列方向上均错开设置,相邻两个触控电极31电性连接的电极线40间隔达到最远,可以最大程度降低电极线40之间的相互干扰。
图9为本申请一实施例中的触控显示面板中显示区和非显示区之间的局部结构示意图,如图9所示,在一个实施例中,触控显示面板还包括堤坝结构90,堤坝结构90设置于衬底10上,且位于非显示区NA,第二引线42从堤坝结构90之靠近衬底10的一侧通过。
在本实施例中,第二引线42位于堤坝结构90的下方,位于堤坝结构90和衬底10之间。
在本实施例中,通过在非显示区NA上设置堤坝结构90,可以避免触控显示面板切割时在边缘产生裂纹,并阻挡裂纹向显示区AA延伸。第二引线42从堤坝结构90的下方通过后电性连接于邦定区上的芯片,可以避免电极线40从堤坝90上翻过。如果电极线40从堤坝90上翻过,则堤坝90的高度差导致形成电极线40沉积的光刻胶较厚,光刻胶容易曝光不充分而出现残留,进而导致电极线40之间短路。而且光刻胶充分曝光消耗的产能较多,生产成本较高。本实施例通过将电极线40从堤坝结构90下方通过,可以避免电 极线40在翻越堤坝时出现的光刻胶残留导致电极线40短路或者过度曝光导致生产成本增高的问题。
示例性地,多条电极线40均为第一类型电极线。
多条电极线40均为第一类型电极线,此时所有电极线40从堤坝结构90下方通过,可以有效避免电极线40在翻越堤坝时出现的光刻胶残留导致电极线40短路或者过度曝光导致生产成本增高的问题。
在实际应用中,非显示区NA包括弯折区,弯折区位于显示区AA和邦定区BA之间,以将显示面板的邦定区BA弯折至显示区AA的背侧,以使触控显示面板满足边缘显示的需求且提高了屏占比。电极线40从堤坝结构90靠近衬底10的一侧经过堤坝结构90之后,先通过导电柱从屏蔽层20转移至弯折区的走线层上,经过弯折区之后再通过导电柱从弯折区的走线层转移回屏蔽层20。
电极线40在经过弯折区之前先转移到走线层上,在经过弯折区之后再转移回屏蔽层20,以便对弯折区上的走线统一进行保护。
需要说明的是,前述“上方”和“下方”是以触控显示面板的层叠方向来定义的,衬底10位于触控显示面板的最下方,按照层叠的顺序,先层叠的位于后层叠的下方。
基于同一发明构思,本申请实施例还提供一种触控显示装置,该显示装置包括上述实施例中的触控显示面板。
可以理解的是,本申请实施例中的触控显示装置可以为OLED显示装置、QLED显示装置、电子纸、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪、可穿戴设备、物联网设备等任何具有显示功能的产品或部件,本申请公开的实施例对此不作限制。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (14)
- 一种触控显示面板,其特征在于,所述触控显示面板包括:衬底;屏蔽层,设置于所述衬底的一侧,所述屏蔽层包括阵列排布的多个屏蔽单元;触控功能层,设置于所述屏蔽层背向所述衬底的一侧,所述触控功能层包括阵列排布的多个触控电极;多条电极线,与所述多个触控电极一一对应且电性连接;其中,所述多条电极线包括至少一条第一类型电极线,所述第一类型电极线包括与所述触控功能层同层设置的第一引线,以及与所述第一引线电性连接且与所述屏蔽层同层设置的第二引线;所述第二引线与所述屏蔽单元彼此间隔且绝缘设置。
- 根据权利要求1所述的触控显示面板,其特征在于,所述触控显示面板还包括层叠布置于所述屏蔽层背向所述衬底的一侧的阳极层和发光层组;所述发光层组包括同层布置且彼此间隔的多个发光单元,所述多个发光单元沿第一方向排布成多行,且沿与所述第一方向垂直的第二方向排布成多列,所述阳极层包括与所述多个发光单元一一对应且电性连接的多个阳极。
- 根据权利要求2所述的触控显示面板,其特征在于,所述触控电极与所述阳极同层布置且彼此间隔开。
- 根据权利要求3所述的触控显示面板,其特征在于,每一所述触控电极在所述第一方向上设置于相邻的两个所述阳极之间。
- 根据权利要求1所述的触控显示面板,其特征在于,所述多条电极线还包括至少一条第二类型电极线,所述第二类型电极线与所述触控功能层同层设置。
- 根据权利要求5所述的触控显示面板,其特征在于,所述第二类型电极线包括与所述触控功能层同层设置的第三引线。
- 根据权利要求5所述的触控显示面板,其特征在于,所述多条电极线包括多条所述第一类型电极线和多条所述第二类型电极线,在一列所述触控电极中,与所述第一类型电极线电性连接的触控电极,和与所述第二类型电极线电性连接的触控电极交替排布。
- 根据权利要求7所述的触控显示面板,其特征在于,相邻两列所述触控电极中,与所述第一类型电极线电性连接的触控电极,和与所述第二类型电极线电性连接的触控电 极错开设置。
- 根据权利要求1所述的触控显示面板,其特征在于,所述多条电极线均为所述第一类型电极线。
- 根据权利要求1所述的触控显示面板,其特征在于,所述触控显示面板包括显示区和至少部分围绕所述显示区的非显示区;所述显示区设有沿垂直于所述触控显示面板方向延伸的接触孔,所述第一引线和所述第二引线通过所述接触孔电导通。
- 根据权利要求10所述的触控显示面板,其特征在于,所述触控显示面板还包括:堤坝结构,设置于所述衬底上,且位于所述非显示区;所述第二引线从所述堤坝结构之靠近所述衬底的一侧通过。
- 根据权利要求11所述的触控显示面板,其特征在于,所述非显示区包括弯折区,所述电极线从所述堤坝结构之靠近衬底的一侧经过后,从所述屏蔽层转移至所述弯折区的走线层上,再转移回所述屏蔽层。
- 根据权利要求2所述的触控显示面板,其特征在于,所述触控显示面板还包括:驱动电路层,设置于所述阳极层和所述屏蔽层之间。
- 一种触控显示装置,其特征在于,所述触控显示装置包括如权利要求1至13任一项所述的触控显示面板。
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US12001630B2 (en) | 2024-06-04 |
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