Touch structure, touch display panel and display device
By designing a mesh structure and guide section in the inter-capacitive touch display panel, the problems of touch failure and error are solved, and the sensitivity and reliability of touch operation are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BOE TECHNOLOGY GROUP CO LTD
- Filing Date
- 2022-01-26
- Publication Date
- 2026-05-08
AI Technical Summary
Existing mutual capacitance touch display panels are prone to touch failures and errors.
A touch structure is designed in which the first and second touch electrodes are mesh structures formed by grid lines, the transition bridge is intersected with the electrode layer, and the residual material is guided by the guide part to extend its path to connect adjacent electrodes and reduce the risk of short circuit.
It improves the sensitivity and reliability of touch operation, reduces the occurrence of touch abnormalities, and enhances the stability of the touch panel.
Smart Images
Figure CN117063144B_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of touch technology, and more specifically, to a touch structure, a touch display panel, and a display device. Background Technology
[0002] Touch display panels are widely used in mobile phones, tablets, and other terminal devices, enabling human-computer interaction through touch operation while displaying images. Among them, capacitive touch display panels are relatively common, determining the touch position and realizing touch operation by sensing changes in capacitance. However, existing capacitive touch display panels are prone to touch failure, errors, and other abnormal phenomena.
[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention
[0004] According to one aspect of this disclosure, a touch structure is provided, disposed on one side of a display substrate. The touch structure includes a plurality of first touch electrodes and a plurality of second touch electrodes. Each first touch electrode is spaced apart along a row direction, and each first touch electrode includes a plurality of first electrode blocks spaced apart along a column direction and a connecting bridge connecting two adjacent first electrode blocks. Each second touch electrode is spaced apart along the column direction, and each second touch electrode includes a plurality of second electrode blocks connected in series along the row direction. A connecting bridge is intersected with a second touch electrode. The first electrode blocks and the second electrodes are located on the same electrode layer, and the connecting bridge is located on one side of the electrode layer. An insulating layer is provided between the connecting bridge and the electrode layer.
[0005] Both the first and second touch electrodes are mesh structures formed by multiple grid lines. The grid lines of the adapter bridge are adapter lines, and the grid lines of the first and second electrode blocks are channel lines. At least one side of the adapter bridge is connected to a guide portion at the same layer as the adapter bridge.
[0006] In the aforementioned adapter bridge and the first electrode block and the intersecting second touch electrode therebetween, a guide portion overlaps with at least one of the channel lines of the boundary of one of the first electrode block and the second touch electrode; a portion of the adapter line overlaps with a portion of the channel line of the boundary of at least one of the first electrode block and the second touch electrode; the adapter line connected to the guide portion overlaps with a portion of the channel line of the boundary of one of the first electrode block and the second touch electrode.
[0007] In an overlapping guide portion and channel line, the guide portion and the channel line extend in the same direction, and at least a portion of the edge of the orthographic projection of the guide portion on the display substrate is located outside the edge of the orthographic projection of the channel line on the display substrate.
[0008] In one exemplary embodiment of this disclosure, there are multiple channel lines that overlap with the guide portion; the guide portion includes multiple guide lines that are sequentially connected along the extension direction of their corresponding channel lines in a direction away from the transition bridge, and one guide line overlaps with one channel line.
[0009] In one exemplary embodiment of this disclosure, the guide line of the guide portion that is furthest from the transition bridge overlaps with a portion of a channel line that is broken into two parts.
[0010] In one exemplary embodiment of this disclosure, the guide line of the guide portion that is furthest from the transition bridge overlaps with a portion of a channel line that is interrupted into two parts, one part of which belongs to the first touch electrode and the other part belongs to the second touch electrode.
[0011] In one exemplary embodiment of this disclosure, in a first electrode block connected to the aforementioned adapter bridge:
[0012] The adapter bridge is connected to the first electrode block through multiple through-holes penetrating the insulating layer;
[0013] The area where the channel lines of the first electrode block intersect is called the channel intersection area, and the area where the transition lines intersect is called the transition intersection area. The boundary of the first electrode block has multiple channel intersection areas, and the channel intersection areas of the boundary of the first electrode block overlap with at least a portion of the transition intersection areas in a one-to-one correspondence.
[0014] In the overlapping transition junction area and channel junction area on the boundary of the first electrode block, the boundary of the orthographic projection of the transition junction area on the display substrate is located outside the boundary of the orthographic projection of the channel junction area on the display substrate.
[0015] In one exemplary embodiment of this disclosure, the mesh structure has a plurality of mesh openings, the mesh openings of the electrode layer are surrounded by a plurality of channel lines, and a channel intersection area forms a vertex of the mesh opening;
[0016] In a transition bridge and a first electrode block connected thereto:
[0017] The number of vias is multiple, and they are located in the intersection area of multiple channels of the same mesh; at most a portion of the vias are located on the boundary of the first electrode block;
[0018] The transition junction area where at least one of the vias located on the boundary of the first electrode block is situated is connected to one end of the transition bridge via a guide portion.
[0019] In one exemplary embodiment of this disclosure, in a bridge and a first electrode block connected thereto and a second touch electrode crossing each other, the bridge has guide portions on both sides that overlap with the boundary of the first electrode block, and the two guide portions that overlap with the boundary of the first electrode block are connected by at least one adapter wire. The boundary of the first electrode block is connected by at least one channel line in the region corresponding to the two guide portions, and the channel line overlaps with the adapter wire between the two guide portions.
[0020] In an overlapping adapter line and a channel line, the adapter line and the channel line extend in the same direction, and the edge of the orthographic projection of the adapter line on the display substrate is located outside the edge of the orthographic projection of the channel line on the display substrate.
[0021] In one exemplary embodiment of this disclosure, in a bridge and a first electrode block connected thereto and a second touch electrode crossing each other, the bridge has guide portions on both sides that overlap with the boundary of the first electrode block, and the two guide portions that overlap with the boundary of the first electrode block are connected by at least one adapter wire, and the boundary of the first electrode block is intermittently set in the area corresponding to the two guide portions.
[0022] In one exemplary embodiment of this disclosure, in a bridge and a first electrode block and a cross second touch electrode connected thereto, a portion of the adapter wires overlaps with the boundary of the second touch electrode, and the adapter wires that overlap with the channel lines of the boundary of the second touch electrode are connected sequentially along the extension direction of the boundary of the second touch electrode.
[0023] In an overlapping adapter line and a channel line, the adapter line and the channel line extend in the same direction, and the edge of the orthographic projection of the adapter line on the display substrate is located outside the edge of the orthographic projection of the channel line on the display substrate.
[0024] In one exemplary embodiment of this disclosure, the orthographic projection of the boundary of the second touch electrode on the display substrate is interrupted on both sides of the orthographic projection of the adapter bridge on the display substrate.
[0025] In one exemplary embodiment of this disclosure, a portion of the boundary of the second touch electrode is projected onto the display substrate in a positive projection that lies within the boundary of the positive projection of the adapter bridge onto the display substrate.
[0026] In one exemplary embodiment of this disclosure, in the overlapping adapter line and the channel line, the distance between the edge of the orthographic projection of the adapter line on the display substrate and the edge of the orthographic projection of the channel line on the display substrate is 0.9 μm-1.5 μm.
[0027] In one exemplary embodiment of this disclosure, in the overlapping guide portion and the channel line, the distance between the edge of the orthographic projection of the guide portion on the display substrate and the edge of the orthographic projection of the channel line on the display substrate is 0.9 μm-1.5 μm.
[0028] In one exemplary embodiment of this disclosure, in the overlapping transition junction area and channel junction area, the distance between the edge of the orthographic projection of the transition junction area on the display substrate and the edge of the orthographic projection of the channel junction area on the display substrate is 0.9μm-1.5μm.
[0029] According to one aspect of this disclosure, a touch structure is provided, disposed on one side of a display substrate. The touch structure includes a plurality of first touch electrodes and a plurality of second touch electrodes. Each first touch electrode is spaced apart along a row direction, and each first touch electrode includes a plurality of first electrode blocks spaced apart along a column direction and a connecting bridge connecting two adjacent first electrode blocks. Each second touch electrode is spaced apart along the column direction, and each second touch electrode includes a plurality of second electrode blocks connected in series along the row direction. A connecting bridge is intersected with a second touch electrode. The first electrode blocks and the second electrodes are located on the same electrode layer, and the connecting bridge is located on one side of the electrode layer. An insulating layer is provided between the connecting bridge and the electrode layer.
[0030] Both the first touch electrode and the second touch electrode are mesh structures formed by multiple grid lines. The grid lines of the adapter bridge are adapter lines, and the grid lines of the first electrode block and the second electrode block are channel lines.
[0031] In one of the aforementioned adapter bridges and the first electrode block and the intersecting second touch electrodes thereconnected thereto, a portion of the adapter wire overlaps with a portion of the channel line at the boundary of at least one of the first electrode block and the second touch electrode.
[0032] In an overlapping adapter line and channel line, the adapter line and channel line extend in the same direction, and the edge of the orthographic projection of the adapter line on the display substrate coincides with the edge of the orthographic projection of the channel line on the display substrate.
[0033] The boundary of the second touch electrode is discontinuous in its orthographic projection on the display substrate at both sides of the orthographic projection of the adapter bridge on the display substrate.
[0034] In one exemplary embodiment of this disclosure, a portion of the boundary of the second touch electrode is projected onto the display substrate in a positive projection that lies within the boundary of the positive projection of the adapter bridge onto the display substrate.
[0035] According to one aspect of this disclosure, a touch display panel is provided, comprising:
[0036] Display substrate;
[0037] In any of the above-described touch structures, the transition bridge is disposed on one side of the display substrate, the insulating layer covers the transition bridge, and the electrode layer is disposed on the surface of the insulating layer opposite to the display substrate.
[0038] According to one aspect of this disclosure, a display device is provided, comprising the touch display panel described in any one of the preceding claims.
[0039] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0040] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0041] Figure 1 This is a top view of one embodiment of the touch structure disclosed herein.
[0042] Figure 2 This is a partial cross-sectional view of one embodiment of the touch display panel disclosed herein.
[0043] Figure 3 This is a partial cross-sectional view of one embodiment of the touch structure disclosed herein.
[0044] Figure 4 This is a partial enlarged view of one embodiment of the touch structure disclosed herein.
[0045] Figure 5 This is a partial schematic diagram of a first embodiment of the touch structure disclosed herein.
[0046] Figure 6 This is a partial schematic diagram of the electrode layer in a second embodiment of the touch structure disclosed herein.
[0047] Figure 7 This is a partial schematic diagram of a second embodiment of the touch structure disclosed herein.
[0048] Figure 8 for Figure 7 A magnified view of a portion of the image.
[0049] Figure 9 This is a partial schematic diagram of the electrode layer in a third embodiment of the touch structure disclosed herein.
[0050] Figure 10 This is a partial schematic diagram of a third embodiment of the touch structure disclosed herein.
[0051] Figure 11 This is a partial schematic diagram of the fourth embodiment of the touch structure disclosed herein.
[0052] Figure 12 This is a schematic diagram of another touch structure provided in this disclosure. Detailed Implementation
[0053] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.
[0054] Although overlapping terms, such as "above" and "below," are used in this specification to describe the overlapping relationship of one component of an icon with respect to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped so that it is upside down, the component described as "above" will become the component described as "below." When a structure is "above" another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.
[0055] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.
[0056] In this document, the row direction X and column direction Y are simply two mutually perpendicular directions. In the accompanying drawings, the row direction X can be horizontal and the column direction Y can be vertical, but are not limited to these. If the touch structure is rotated, the actual orientation of the row direction X and column direction Y may change. The X direction in the accompanying drawings exemplarily shows the row direction, and the Y direction exemplarily shows the column direction. Furthermore, the term "adjacent" to A and B as described herein means that there are no other A or B between A and B. For example, an adjacent first electrode block and a second electrode block mean that there are no other first electrode blocks and other second electrode blocks between them.
[0057] This disclosure provides a touch structure that can be disposed on one side of a display substrate. The display substrate can be used to display images and can be an organic electroluminescent display substrate, a liquid crystal display substrate, or other devices capable of displaying images; no particular limitation is made herein. The display touch structure can be used to sense touch operations, determine the touch position, and thereby display the corresponding image on the display substrate.
[0058] like Figure 1 and Figure 2 As shown, the touch structure disclosed herein can be a mutual capacitance structure, which may include multiple first touch electrodes Tx and multiple second touch electrodes Rx. Each first touch electrode Tx may be spaced apart along the row direction X, and each second touch electrode Rx may be spaced apart along the column direction Y. Figure X As shown, both the first touch electrode Tx and the second touch electrode Rx may include multiple electrode blocks connected in series. Each first touch electrode Tx may include multiple first electrode blocks Txc connected in series along the column direction Y, with adjacent first electrode blocks Txc connected in series via a transition bridge BR. Each second touch electrode Rx may include multiple second electrode blocks Rxc connected in series along the row direction X, with adjacent second electrode blocks Rxc connected in series via a connecting portion Rxo.
[0059] Each first electrode block Txc and second electrode block Rxc is arrayed. At least a portion of the first electrode blocks Txc are adjacent to different second electrode blocks Rxc in two different directions intersecting with the row direction X and the column direction Y. Correspondingly, at least a portion of the second electrode blocks Rxc are adjacent to different first electrode blocks Txc in two different directions intersecting with the row direction X and the column direction Y.
[0060] A gap exists between adjacent first electrode blocks Txc and second electrode blocks Rxc, thereby forming a capacitor. To increase the area directly opposite each other between the first electrode blocks Txc and Rxc, interdigitated fingers FI can be arranged circumferentially spaced along the edges of the first electrode blocks Txc and Rxc. In adjacent first electrode blocks Txc and Rxc, a portion of the interdigitated fingers FI of the first electrode block Txc can be located between a portion of the interdigitated fingers FI of the second electrode block Rxc, but without contact. This alternating arrangement of the interdigitated fingers FI of the first electrode block Txc and the second electrode block Rxc makes the extension trajectory of the gap between the first electrode blocks Txc and Rxc more tortuous, increasing the area directly opposite each other without increasing the area of the first electrode blocks Txc and Rxc. This is beneficial for increasing the capacitance between them and improving the sensitivity of touch operation.
[0061] A capacitor can be formed between any two adjacent first electrode blocks Txc and second electrode blocks Rxc. When a finger performs a touch operation, the capacitance at the touch position changes. The touch position can be determined by sensing the change in capacitance corresponding to the first touch electrode Tx and the second touch electrode Rx. The detailed principle will not be described in detail here.
[0062] like Figure 1 As shown, each first touch electrode Tx can be connected to a different signal terminal via different leads, and each second touch electrode Rx can also be connected to a different signal terminal via different leads, so as to transmit and receive signals through the first touch electrode Tx and the second touch electrode Rx. For example, the first touch electrode Tx can be used as a driving electrode to receive driving signals, and the second touch electrode Rx can be used as a sensing electrode to output sensing signals. Of course, the functions of the first touch electrode Tx and the second touch electrode Rx can be interchanged.
[0063] like Figure 1 and 2 As shown, the aforementioned electrode blocks and connecting portions Rxo can be located on the same electrode layer PL, which can be formed simultaneously in a single patterning process. That is, the electrode layer PL includes the electrode block of the first touch electrode Tx and the second touch electrode Rx. To avoid short circuits between the first touch electrode Tx and the second touch electrode Rx, the transition bridge BR can be located on one side of the electrode layer PL, meaning the transition bridge BR is on a different layer than the electrode layer PL. Simultaneously, the transition bridge BR and the electrode layer PL can be separated by an insulating layer IN. The first touch electrode Tx can intersect with the second touch electrode Rx at the transition bridge BR. Furthermore, the transition bridge BR can intersect with the connecting portion Rxo. In addition, the transition bridge BR can be connected to the first electrode block Txc through a via Ho penetrating the insulating layer IN.
[0064] like Figure 1-2 As shown, in some embodiments of this disclosure, each transition bridge BR can be disposed on the light-emitting side of the display substrate PNL and can be formed simultaneously. Each transition bridge BR has the same thickness and is made of the same material, thus allowing for simultaneous formation. An insulating layer IN can cover each transition bridge BR and is raised at positions corresponding to the transition bridge BR, but is not broken; that is, the insulating layer IN can undulate with the presence of the transition bridge BR. An electrode layer PL can be disposed on the surface of the insulating layer IN facing away from the display substrate PNL. Each transition bridge BR can be connected to the same first electrode block Txc through one or more vias Ho penetrating the insulating layer IN.
[0065] like Figure 4 As shown, in the same first touch electrode Tx, the number of transition bridges BR connecting two adjacent first electrode blocks Txc can be one or more. If there are multiple transition bridges BR, the multiple transition bridges BR can be distributed side by side along the row direction X, and all of them intersect with the same connection part Rxo in space. That is, the two intersect on the orthographic projection of the two on the display substrate PNL, but are not actually connected, so as to prevent the first touch electrode Tx and the second touch electrode Rx from being connected and causing a short circuit.
[0066] In some embodiments of this disclosure, a dummy electrode Dum can be embedded in both the first electrode block Txc and the second electrode block Rxc. For example, the first electrode block Txc and the second electrode block Rxc have a hollow area, which is a through-hole structure that penetrates the electrode layer. The dummy electrode Dum is located in the hollow area and is disposed in the same layer as the first electrode block Txc and the second electrode block Rxc. Each hollow area can have one dummy electrode Dum, and each dummy electrode Dum is in a floating state, that is, it is not electrically connected to any other structure and does not receive any electrical signals.
[0067] Both the bridge (BR) and the electrode layer (PL) can be single-layer or multi-layer conductive structures. For example, the bridge (BR) can include two outer layers and an intermediate layer between them. The outer layers can be made of titanium, and the intermediate layer can be made of aluminum, i.e., the bridge (BR) has a Ti / Al / Ti structure; or, the outer layers can be made of indium tin oxide (ITO), and the intermediate layer can be made of aluminum, i.e., the bridge (BR) has an ITO / Ag / ITO structure. Similarly, if the electrode layer (PL) is a multi-layer structure, it can also be a Ti / Al / Ti structure or an ITO / Ag / ITO structure.
[0068] The material of the insulating layer IN can be silicon nitride, or it can be silicon oxide, silicon oxynitride, or other insulating materials.
[0069] In addition, such as Figure 2As shown, in some embodiments of this disclosure, the touch structure may further include a buffer layer BA and a protective layer OC. The buffer layer BA can serve as the substrate of the touch structure and can be disposed on the light-emitting side of the display substrate PNL. Its material may include insulating materials such as silicon nitride and silicon oxide. The transition bridge BR can be disposed on the surface of the buffer layer BA facing away from the display substrate PNL. The protective layer OC can cover the areas of the electrode layer PL and the insulating layer IN not covered by the electrode layer PL. The protective layer OC is used to protect the electrode layer PL, and its material may be a transparent insulating material such as polyimide (PI) or optical adhesive.
[0070] like Figure 5-11 As shown, to reduce the obstruction of the light emitted by the PNL of the display substrate, the electrode layer PL containing the first touch electrode Tx and the second touch electrode Rx can be a mesh structure formed by multiple grid lines. Each grid line can extend in a straight line, but the direction can be different. The grid lines of the electrode layer PL (including the first electrode block Txc and the second touch electrode Rx) can be channel lines TL, and the grid lines of the transition bridge BR can be transition lines BL. The aforementioned mesh structure has multiple mesh openings NEh, each mesh opening NEh is surrounded by multiple grid lines. For example, any mesh opening NEh of the electrode layer PL can be surrounded by multiple channel lines TL, and any mesh opening NEh of the transition bridge BR can be surrounded by multiple transition lines BL. The mesh openings NEh can be polygonal, such as rhombuses or hexagons, etc., without special limitation. Each side of the polygon is a grid line. In addition, the dummy electrode Dum can also be a mesh structure and can be formed simultaneously with the first electrode block Txc and the second touch electrode Rx.
[0071] It should be noted that, since grid lines have width, the aforementioned polygons are not limited to the shape of standard geometric polygons. The vertices of the polygons are not points in the geometric sense, but refer to the areas where grid lines intersect.
[0072] like Figures 5-11 As shown, in some embodiments of this disclosure, the area where the channel lines TL of the first electrode block Txc intersect is called the channel intersection region TLm, and the area where the different transition lines BL of the transition bridge BR intersect is called the transition intersection region BRm. The boundary of the first electrode block Txc has multiple channel intersection regions TLm, and the channel intersection regions TLm of the boundary of the first electrode block Txc overlap with at least a portion of the transition intersection regions BRm in a one-to-one correspondence. The orthographic projections of the overlapping transition intersection regions BRm and the channel intersection regions TLm on the display substrate PNL at least partially coincide, and the overlapping transition intersection region BRm and the channel intersection region TLm can be connected by a via Ho.
[0073] The channel junction area TLm can be the area where two channel lines TL overlap, or it can extend outward from the channel lines TL to increase the area of the junction area. The shape of the channel junction area TLm is not specifically limited here. The transition junction area BRm and the channel junction area TLm are similar in form, and their shapes are not specifically limited here. The areas of the transition junction area BRm and the channel junction area TLm connected by vias Ho are not less than the areas of the other transition junction areas BRm and channel junction areas TLm, in order to accommodate the vias Ho.
[0074] In the overlapping transition junction region BRm and channel junction region TLm on the boundary of the first electrode block Txc, the boundary of the orthographic projection of the transition junction region BRm onto the display substrate PNL is located outside the boundary of the orthographic projection of the channel junction region TLm onto the display substrate PNL.
[0075] like Figures 5-11 As shown, the electrode layer PL is broken at a portion of the channel line TL, thereby separating the first electrode block Txc and the second touch electrode Rx. In other words, the gap between adjacent first electrode blocks Txc and second touch electrodes Rx can be formed by breaking the channel line TL. Breaking the channel line TL can be achieved by removing a local area of the channel line TL or by removing the entire channel line TL. Figures 5-1 The dashed line S in the figure shows the extension path of the gap between the first electrode block Txc and the second touch electrode Rx. This extension path is only for illustration and is not a limitation on the actual extension path.
[0076] The gap between the first electrode block Txc and the adjacent second touch electrode Rx can be formed by the two disconnection methods described above. The boundary between the first electrode block Txc and the second touch electrode Rx can be formed by a portion of the channel line TL, that is, the outermost channel line TL of the first electrode block Txc and the second touch electrode Rx is its boundary, wherein the boundary of the second touch electrode Rx includes the boundary of the second electrode block Rxc and the boundary of the connecting part Rxo.
[0077] In a bridge BR and its connected first electrode block Txc and intersecting second touch electrode Rx, the bridge BR spans the gap between the second touch electrode Rx and the first electrode block Txc and the second touch electrode Rx, and connects to the first electrode block Txc. The width of the gap spanned by the bridge BR can be equal to the length of a connecting wire BL, and the bridge BR has multiple connecting wires BL opposite to this gap. That is, the orthographic projection of a portion of the connecting wires BL of the bridge BR onto the display substrate PNL is located within the gap between the first electrode block Txc and the second touch electrode Rx, which is within the orthographic projection gap of the display substrate PNL. This allows the bridge BR to span the second touch electrode Rx in space and connect to the first electrode block Txc.
[0078] In some embodiments of this disclosure, in a bridge BR and a first electrode block Txc connected thereto and a second touch electrode Rx intersecting with the bridge BR, the adapter line BL of the bridge BR extending into the boundary of the first electrode block Txc can overlap one-to-one with the channel line TL of the first electrode block Txc, and a portion of the adapter line BL can overlap with the channel line TL constituting the boundary of the first electrode block Txc.
[0079] In some embodiments of this disclosure, in a transition bridge BR and its connected first electrode block Txc and a second touch electrode Rx intersecting with the transition bridge BR, the transition line BL of the transition bridge BR extending into the boundary of the second touch electrode Rx can overlap one-to-one with the channel line TL of the second touch electrode Rx, and a portion of the transition line BL can overlap with the channel line TL constituting the boundary of the second touch electrode Rx. The overlapping transition line BL and the channel line TL have the same extending direction in their orthographic projections on the display substrate PNL, and at least partially coincide.
[0080] The distribution of mesh NEh is illustrated below using the basic structure of a display substrate PNL as an example:
[0081] The display substrate PNL may have multiple light-emitting units, each of which may include multiple independently emitting sub-pixels. The same light-emitting unit may include at least multiple sub-pixels with different emitting colors. The aforementioned mesh NEh may be configured corresponding to the sub-pixels of the display substrate PNL. Each mesh NEh has at least one sub-pixel within its orthographic projection on the display substrate PNL. The light emitted by the sub-pixel can exit through the mesh NEh, reducing the obstruction of the touch structure to the light emission of the display substrate PNL. For example, the display substrate PNL can be an electroluminescent organic light-emitting display substrate PNL, i.e., an OLED display substrate PNL, which may include a driving backplate BP and an emissive layer OL located on one side of the driving backplate BP. The emissive layer OL may include multiple arrayed light-emitting devices, which may be organic light-emitting diodes. In some embodiments, each light-emitting device emits light independently and the colors may be different. In this case, one light-emitting device may be a sub-pixel. In other embodiments, the light-emitting devices emit the same color. In this case, the display substrate PNL may also include a color filter layer, which may include a filter section corresponding to each light-emitting device. The filter section may emit only monochromatic light, and the filter section and its corresponding light-emitting device may be a sub-pixel.
[0082] It should be noted that the aforementioned light-emitting unit is defined only for the convenience of describing the distribution of sub-pixels and is not limited to being the basic unit for displaying an image. When displaying an image, each sub-pixel can be divided into multiple pixels, and each pixel includes sub-pixels of at least three colors. Adjacent pixels can share some sub-pixels; that is, a sub-pixel in a light-emitting unit can be shared by two different pixels, and image display is achieved through the Subpixel Rendering (SPR) algorithm. Of course, different pixels can also not share sub-pixels; in this case, the light-emitting unit can act as a pixel.
[0083] like Figures 5-8 As shown, in some embodiments of this disclosure, the display substrate PNL is an electroluminescent organic light-emitting display substrate PNL, and its subpixels can be arranged in a diamond pattern. Specifically, the same light-emitting unit can include four subpixels, namely a red subpixel, a blue subpixel, and two green subpixels. The red and blue subpixels can be distributed along the column direction Y, and the blue subpixel is larger than the red subpixel. The two green subpixels are distributed along the row direction X on both sides of the red and blue subpixels, and the areas of the two green subpixels are equal. The center line connecting the four subpixels can be rhomboid, and the outline of each subpixel can also be rhomboid, but the area of the green subpixel is smaller than that of the red subpixel.
[0084] Correspondingly, the mesh NEh of the touch structure can be rhomboid, with each sub-pixel corresponding to only one mesh NEh, allowing light to pass through that mesh NEh. The shape of any sub-pixel is the same as the shape of its corresponding mesh NEh. If both are polygons, then the sides of the sub-pixel are parallel to the sides of the mesh NEh (i.e., the grid lines forming the mesh NEh) in a one-to-one correspondence. The mesh NEh corresponding to a green sub-pixel is smaller than the mesh NEh corresponding to a red sub-pixel, and the mesh NEh corresponding to a blue sub-pixel is larger than the mesh NEh corresponding to a red sub-pixel.
[0085] In a transition bridge BR and its connected first electrode block Txc, the number of vias Ho connecting the transition bridge BR and the first electrode block Txc is the same as the number of vertices of a mesh NEh, and each via Ho corresponds one-to-one with the channel junction area TLm and the transition junction area BRm located at each vertex. Some of the vias Ho are located on the boundary of the first electrode block Txc. For example, one or two vias Ho are located on the boundary of the first electrode block Txc, while the other vias Ho are not located on the boundary of the first electrode block Txc.
[0086] like Figures 9-11As shown, in some other embodiments of this disclosure, the display substrate PNL is still an electroluminescent organic light-emitting display substrate PNL, and its sub-pixels can be arranged in a GGRB pattern. Specifically, the same light-emitting unit can include four sub-pixels, namely one red sub-pixel, one blue sub-pixel and two green sub-pixels. The red sub-pixel and the blue sub-pixel can be distributed along the row direction X, and both of them are hexagonal in shape. The area of the blue sub-pixel is larger than the area of the red sub-pixel. The two green sub-pixels are distributed along the column direction Y between the red sub-pixel and the blue sub-pixel, and both of the green sub-pixels are pentagonal in shape and have equal areas. The area of the green sub-pixel is smaller than that of the red sub-pixel and the blue sub-pixel.
[0087] Accordingly, each sub-pixel corresponds to only one mesh NEh, allowing light to pass through that mesh NEh. The shape of any sub-pixel is the same as the shape of its corresponding mesh NEh. If both are polygons, the sides of the sub-pixel are parallel to the sides of the mesh NEh (i.e., the grid lines that form the mesh NEh) in a one-to-one correspondence. The mesh NEh corresponding to the green sub-pixel is smaller than the mesh NEh corresponding to the blue and red sub-pixels, and the mesh NEh corresponding to the blue sub-pixel is smaller than the mesh NEh corresponding to the red sub-pixel.
[0088] In a bridge BR and its connected first electrode block Txc, there are multiple vias Ho, such as four or five, and each via Ho is located on the boundary of the first electrode block Txc.
[0089] Regarding the aforementioned touch structure, the inventors discovered that the adapter bridge BR of the touch structure can be fabricated through processes such as deposition, exposure, development, and etching. During this process, the cross-section of the adapter line BL is trapezoidal, meaning the sidewalls of the adapter line BL contract away from the display substrate PNL. Correspondingly, the insulating layer IN forms a trapezoidal protrusion at the position corresponding to the sidewall of the adapter line BL. The sidewalls of this protrusion are similar to those of the adapter line BL, also contracting away from the substrate. When forming the electrode layer PL, in addition to the required pattern, residual material of the electrode layer PL will exist on the outer side of the sidewall corresponding to the protrusion, i.e., on the outer side of the sidewall corresponding to the adapter line BL. This residual material can extend along the sidewall of the adapter line BL, thereby connecting the first electrode block Txc and the adjacent second touch electrode Rx, causing a short circuit and resulting in touch abnormalities such as touch malfunction or reduced accuracy.
[0090] In response, based on the above-described implementation method, the inventors have provided a touch structure, such as... Figures 5-11As shown, by connecting a guide portion GP, which is on the same layer as the adapter bridge BR, to at least one side of the adapter bridge BR, the guide portion GP guides the direction of the residual material, thereby extending the path required for the residual material to cause a short circuit between adjacent first electrode blocks Txc and second contact electrodes, making it easier to disconnect and thus reducing the risk of short circuit. Since the adapter bridge BR extends from one first electrode block Txc to another first electrode block Txc in the same column, one side of the adapter bridge BR is one side of its extension direction. For example:
[0091] Both sides of the adapter bridge BR are connected to guide sections GP, and one guide section GP can be connected to an adapter line BL of the adapter bridge BR at an adapter junction area BRm. In an adapter bridge BR and its connected first electrode block Txc and the second touch electrode Rx that intersects with the adapter bridge BR: a guide section GP can overlap with a portion of the channel line TL that forms the boundary of the first electrode block Txc; or, it can overlap with a portion of the channel line TL that forms the boundary of the second touch electrode Rx; or, two guide sections GP can be connected on the same layer of the adapter bridge BR, one of which overlaps with a portion of the channel line TL that forms the boundary of the first electrode block Txc, and the other overlaps with a portion of the channel line TL that forms the boundary of the second touch electrode Rx.
[0092] In an overlapping guide portion GP and channel line TL, the guide portion GP extends in the same direction as the channel line TL, and at least a portion of the edge of the orthographic projection of the guide portion GP onto the display substrate PNL is located outside the edge of the orthographic projection of the channel line TL onto the display substrate PNL.
[0093] Since the guide portion GP and the transition bridge BR are arranged in the same layer, that is, they have the same thickness and material and can be formed simultaneously, the guide portion GP can be regarded as an extension of the transition bridge BR. When forming the guide portion GP and the transition bridge BR, the cross-section of the guide portion GP and the transition bridge BR can be trapezoidal, that is, the sidewalls of both shrink away from the display substrate PNL. However, since the edge of the guide portion GP's orthographic projection on the display substrate PNL is located outside the edge of the channel line TL's orthographic projection on the display substrate PNL, the residual material of the electrode layer PL can only extend along the extension direction of the guide portion GP and can only connect the adjacent first electrode block Txc and the second touch electrode Rx after passing around the guide portion GP and away from the end of the transition bridge BR. The presence of the guide portion GP makes this path longer, making it difficult for the residual material to extend continuously, increasing the possibility of its disconnection, thereby reducing the short circuit caused by the residual material in the adjacent first electrode block Txc and the second touch electrode Rx, and reducing the risk of touch abnormality.
[0094] like Figure 5As shown, the path length that the residual material needs to travel is a+b+c+d+e to bypass a guide GP and connect the first electrode block Txc and the second touch electrode Rx. Obviously, a+b+c+d+e is greater than a. Compared with the absence of a guide GP, the path that causes a short circuit is extended at least on one side of the adapter bridge BR, which increases the difficulty of the residual material causing a short circuit.
[0095] In some embodiments of this disclosure, such as Figure 7 and Figure 8 As shown, there are multiple channel lines TL that overlap with a guide portion GP; the guide portion GP may include multiple guide lines GL connected sequentially along the extension direction of its corresponding channel line TL in a direction away from the transition bridge BR, and a guide line GL overlaps with a channel line TL; in the overlapping guide line GL and channel line TL, the edge of the orthographic projection of the guide line GL on the display substrate PNL is located outside the edge of the orthographic projection of the channel line TL on the display substrate PNL.
[0096] In the guide section GP, the guide line GL furthest from the transition bridge BR overlaps with a portion of a channel line TL that is broken into two parts. For example, a guide section GP may include two guide lines GL, with the guide line GL furthest from the transition bridge BR overlapping with a portion of a channel line TL that is broken into two parts and closer to the guide section GP. It should be noted that different guide sections GP may include different numbers of guide lines GL. A portion of the channel line TL that is broken into two parts may belong to the first touch electrode Tx, and the other portion may be located on the second touch electrode Rx.
[0097] In some embodiments of this disclosure, in a transition bridge BR and a first electrode block Txc connected thereto, there are multiple vias Ho connecting the transition bridge BR and the first electrode block Txc, and at least one via Bo is located on the boundary of the first electrode block Txc. The transition junction area BRm where the via located on the boundary of the first electrode block Txc is located is connected to one end of a guide portion GP connected to the transition bridge BR. That is, the guide portion GP extends away from the transition junction area BRm where a via Ho is located, starting from the transition junction area BRm. For example, if two vias Ho are located on the boundary of the first electrode block Txc, the two guide portions GP can extend away from the transition junction area BRm where a via Ho is located, respectively. If three vias Ho are located on the boundary of the first electrode block Txc, the two guide portions GP can extend away from the transition junction area BRm where one of the two outermost vias Ho is located, respectively.
[0098] In some embodiments of this disclosure, such as Figures 5-10As shown, in a bridge BR and a first electrode block Txc connected thereto and a cross second touch electrode Rx, guide portions GP that overlap with the boundary of the first electrode block Txc are connected on both sides of the bridge BR, and the two guide portions GP that overlap with the boundary of the first electrode block Txc are connected by at least one adapter line BL; the boundary of the first electrode block Txc is connected by at least one channel line TL in the region corresponding to the two guide portions GP, and the channel line TL in this region overlaps one-to-one with the adapter line BL between the two guide portions GP.
[0099] In the overlapping adapter line BL and channel line TL, the adapter line BL and channel line TL extend in the same direction, and the edge of the orthographic projection of the adapter line BL onto the display substrate PNL is located outside the edge of the orthographic projection of the channel line TL onto the display substrate PNL. This allows the path of the residual material in the electrode layer PL to be extended to the maximum extent through the two guide portions GP and the adapter line BL between them, increasing the difficulty of continuous extension of the residual material and making it easier to break, thereby improving the ability to prevent short circuits between the first electrode block Txc and the second touch electrode Rx.
[0100] In some embodiments of this disclosure, such as Figure 11 As shown, in a bridge BR and its connected first electrode block Txc and intersecting second touch electrode Rx, guide portions GP overlapping the boundary of the first electrode block Txc are connected to both sides of the bridge BR. The two guide portions GP overlapping the boundary of the first electrode block Txc are connected by at least one adapter wire BL. The boundary of the first electrode block Txc is discontinuous in the region corresponding to the two guide portions GP. This discontinuity can mean that there is no channel line TL in this region, effectively causing the boundary of the first electrode block Txc to be recessed inward in the region corresponding to the two guide portions GP, thereby increasing the distance to the second touch electrode Rx. This also increases the difficulty of maintaining the continuity of residual material, making it easier to break, thus improving the ability to prevent short circuits between the first electrode block Txc and the second touch electrode Rx. This can be achieved by making the first electrode block Txc discontinuous in the region corresponding to the two guide portions GP.
[0101] In some embodiments of this disclosure, such as Figure 10 and Figure 11As shown, in a bridge BR and its connected first electrode block Txc and intersecting second touch electrode Rx, a portion of the adapter line BL overlaps with the boundary of the second touch electrode Rx, and the adapter lines BL overlapping with the channel line TL of the boundary of the second touch electrode Rx are sequentially connected along the extension direction of the boundary of the second touch electrode Rx. That is, a portion of the adapter line BL in the bridge BR can extend along the boundary of the second touch electrode Rx. Simultaneously, in the overlapping adapter line BL and channel line TL, the extension direction of the adapter line BL is the same as that of the channel line TL, and the edge of the orthographic projection of the adapter line BL onto the display substrate PNL is located outside the edge of the orthographic projection of the channel line TL onto the display substrate PNL. Therefore, the residual material of the electrode layer PL can be kept at a certain distance from the boundary of the second touch electrode Rx, reducing the risk of a short circuit between the second touch electrode Rx and the first electrode block Txc due to the connection of residual material.
[0102] In some embodiments of this disclosure, the boundary of the second touch electrode Rx can be discontinuous on both sides of the area traversed by the transition bridge BR. That is, the orthographic projection of the boundary of the second touch electrode Rx onto the display substrate PNL is discontinuous on both sides of the orthographic projection of the transition bridge BR onto the display substrate PNL. This is equivalent to dividing the boundary of the second touch electrode Rx on both sides of the transition bridge BR and maintaining a certain distance from it. Increasing the distance to the first electrode block Txc also increases the difficulty of maintaining the continuity of residual material, making it easier to break, thereby improving the ability to prevent short circuits between the first electrode block Txc and the second touch electrode Rx.
[0103] Furthermore, in order to maintain the uniformity of the boundary of the second touch electrode Rx, a portion of the boundary of the second touch electrode Rx can remain within the range of the adapter bridge BR, such that the orthographic projection of a portion of the boundary of the second touch electrode Rx onto the display substrate PNL is located within the boundary of the orthographic projection of the adapter bridge BR onto the display substrate PNL.
[0104] In the overlapping transition line BL and channel line TL, if the distance D between the edge of the orthographic projection of the transition line BL onto the display substrate PNL and the edge of the orthographic projection of the channel line TL onto the display substrate PNL is too large, it may block the light emission of the sub-pixel. If the distance D is too small, it may be difficult to restrict the position of the residual material in the electrode layer PL. After extensive experimentation and analysis, the inventors have determined that this distance D can be 0.9μm-1.5μm, for example, 1.2μm, which ensures light emission while also preventing short circuits. Of course, those skilled in the art can use smaller or larger values depending on the actual situation.
[0105] Similarly, in the overlapping guide portion GP and channel line TL, the distance between the boundary of the orthographic projection of the guide portion GP onto the display substrate PNL and the boundary of the orthographic projection of the channel line TL onto the display substrate PNL can also be 0.9μm-1.5μm, for example 1.2μm.
[0106] In the overlapping transition junction area BRm and channel junction area TLm, the distance between the boundary of the orthographic projection of the transition junction area BRm onto the display substrate PNL and the boundary of the orthographic projection of the channel junction area TLm onto the display substrate PNL can be 0.9μm-1.5μm, for example 1.2μm.
[0107] This disclosure also provides another touch structure, the structure of which can be referred to the touch structure described above, such as... Figure 12 As shown, the difference lies in the following: In the overlapping adapter line BL and channel line TL, the extension direction of adapter line BL and channel line TL is the same, and the edge of the orthographic projection of adapter line BL on display substrate PNL coincides with the edge of the orthographic projection of channel line TL on display substrate PNL. The orthographic projection of the boundary of the second touch electrode Rx on display substrate PNL is discontinuous on both sides of the orthographic projection of adapter bridge BR on display substrate PNL. Therefore, the path of residual material in electrode layer PL is not extended by the outward expansion of guide portion GP and adapter line BL relative to channel line TL, but only the distance between the boundary of the second touch electrode Rx and the first electrode block Txc is increased, thereby increasing the path of residual material, increasing the difficulty of its continuous extension, and thus reducing the risk of short circuit.
[0108] It should be noted that the adapter bridge BR connects to two first electrode blocks Txc at the same time. The above implementation method only describes the connection method of the adapter bridge BR with one electrode block. The connection method with the other electrode block can be the same as the connection method described above, and will not be repeated here.
[0109] This disclosure also includes a touch display panel, such as... Figure 2 As shown, it may include a display substrate PNL and a touch structure, wherein:
[0110] The display substrate PNL can be an electroluminescent organic light-emitting display substrate, a liquid crystal display substrate, etc., and its structure is not specifically limited here.
[0111] Taking an electroluminescent organic light-emitting display substrate (PNL) as an example, it may include a driving backplane (BP), a light-emitting device layer, and a packaging layer (TFE), wherein:
[0112] The driving backplane (BP) has a driving circuit that can be used to drive each light-emitting device in the light-emitting device layer to emit light independently in order to display an image. Simultaneously, the driving backplane (BP) may include pixel areas and a peripheral area located outside the pixel areas; for example, the peripheral area may be a continuous or discontinuous annular region surrounding the pixel areas.
[0113] The driving circuit may include pixel circuits and peripheral circuits. At least some pixel circuits are located within the pixel area; however, some areas of some pixel circuits may be located in the peripheral area. The pixel circuits can be 7T1C, 7T2C, 6T1C, or 6T2C structures, as long as they can drive the light-emitting devices to emit light; no special restrictions are placed on their structure. The number of pixel circuits is the same as the number of light-emitting devices, and they are connected one-to-one with each light-emitting device to control each device to emit light independently. Here, nTmC indicates that a pixel circuit includes n transistors (represented by the letter "T") and m capacitors (represented by the letter "C").
[0114] The peripheral circuit is located within the peripheral area and is connected to the pixel circuit. It is used to input driving signals to the pixel circuit to control the light-emitting device to emit light. The peripheral circuit may include gate driving circuit, source driving circuit, and light-emitting control circuit, and may also include other circuits. The specific structure of the peripheral circuit is not specifically limited here.
[0115] The driving backplane (BP) can be formed from multiple film layers. For example, the driving backplane (BP) may include a substrate and a driving layer disposed on one side of the substrate. The substrate may be a single-layer or multi-layer structure, and it may be a rigid or flexible structure, without special limitation. The driving circuit described above may be located in the driving layer. Taking a top-gate thin-film transistor as an example, the driving layer may include an active layer, a first gate insulating layer, a gate, a second gate insulating layer, an interlayer dielectric layer, a first source / drain layer, a passivation layer, a first planarization layer, a second source / drain layer, and a second planarization layer, wherein:
[0116] An active layer is disposed on a substrate; a first gate insulating layer covers the active layer; a gate is disposed on the surface of the first gate insulating layer away from the substrate and is directly opposite to the active layer; a second gate insulating layer covers the gate and the first gate insulating layer; an interlayer dielectric layer covers the second gate insulating layer; a first source / drain layer is disposed on the surface of the interlayer dielectric layer away from the substrate and includes a source and a drain, which are connected to the active layer; a passivation layer covers the first source / drain layer; a first planarization layer covers the passivation layer; a second source / drain layer is disposed on the surface of the first planarization layer away from the substrate and is connected to the first source / drain layer; a second planarization layer covers the second source / drain layer and the first planarization layer.
[0117] The light-emitting device layer is disposed on one side of the driving backplane (BP), for example, on the surface of the driving layer facing away from the substrate. The light-emitting device layer may include multiple light-emitting devices arrayed within a pixel region and a pixel definition layer defining each light-emitting device, wherein:
[0118] The pixel definition layer can be disposed on one side of the driving backplane BP, for example, on the surface of the second planarization layer facing away from the substrate. The pixel definition layer is used to separate individual light-emitting devices. Specifically, the pixel definition layer can have multiple openings, and the area defined by each opening is the area of one light-emitting device. The shape of the opening, that is, the shape of the outline of the opening projected onto the driving backplane BP, can be a polygon, a smooth closed curve, or other shapes. The smooth closed curve can be a circle, an ellipse, or an oval, etc., and is not specifically limited here.
[0119] A pixel circuit can be connected to at least one light-emitting device, thereby emitting light under the drive of a driving circuit. For example, the light-emitting device can be connected to a second source / drain layer and can emit light under the drive of the driving circuit. The light-emitting device can be an organic light-emitting diode, which may include a first electrode, a light-emitting functional layer, and a second electrode sequentially stacked along a direction away from the driving backplane BP, wherein:
[0120] The first electrode can be located on the same surface of the driving backplane (BP) as the pixel definition layer, and it can serve as the anode of the light-emitting device. Each opening in the pixel definition layer exposes a corresponding first electrode. The first electrode can be a single-layer or multi-layer structure, and its material can include one or more of conductive metals, metal oxides, and alloys.
[0121] The light-emitting functional layer is at least partially disposed within the opening, and may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer and an electron injection layer stacked sequentially in a direction away from the driving backplate BP. Visible light is generated by causing holes and electrons to recombine into excitons in the light-emitting material layer, and the excitons radiate photons. The specific light-emitting principle will not be detailed here.
[0122] The second electrode may be covered with a light-emitting functional layer, which can serve as the cathode of the light-emitting device. The second electrode may be a single-layer or multi-layer structure, and its material may include one or more of conductive metals, metal oxides, and alloys.
[0123] Furthermore, each light-emitting device can share the same second electrode. Specifically, the second electrode is a continuous conductive layer covering the light-emitting functional layer and pixel definition layer of each light-emitting device. In other words, the orthogonal projection of the second electrode onto the pixel definition layer covers each opening.
[0124] The TFE encapsulation layer covers the light-emitting device layer, protecting it from external water and oxygen corrosion. For example, the TFE encapsulation layer can be implemented using thin-film encapsulation, and may include a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer covers the surface of the light-emitting device layer facing away from the driving backplate BP; for example, the first inorganic layer may cover the second electrode. The organic layer may be disposed on the surface of the first inorganic layer facing away from the driving backplate BP, and the boundary of the organic layer is defined inside the boundary of the first inorganic layer. The boundary of the orthographic projection of the organic layer onto the driving backplate BP may be located in the peripheral region, ensuring that the organic layer covers all light-emitting devices. The second inorganic layer may cover the organic layer and the first inorganic layer not covered by the organic layer. The second inorganic layer can block water and oxygen intrusion, while the flexible organic layer achieves planarization.
[0125] The touch structure can be located on the side of the encapsulation layer TFE facing away from the driving backplane BP. For example, the buffer layer BA can be located on the surface of the encapsulation layer TFE facing away from the driving backplane BP. The orthogonal projection of the touch structure onto the driving backplane BP must at least cover the pixel area. The specific structure of the touch structure can be referred to the implementation method of the touch structure described above, and will not be repeated here. The mesh NEh of the electrode layer PL in the touch structure can be configured one-to-one with each light-emitting device; the specific implementation method can be referred to the implementation method of the touch structure described above.
[0126] Furthermore, in some embodiments of this disclosure, the touch display panel may also include a polarizing layer and a transparent cover plate, wherein: the polarizing layer is a circular polarizer that reduces the reflection of external light, and its specific principle is not described in detail. The transparent cover plate can be adhered to the polarizing layer and can achieve planarization. The transparent cover plate is used to protect the underlying film layer, and its material can be a transparent material such as glass or acrylic, without special limitation.
[0127] This disclosure also provides a display device, which may include the touch display panel of any of the above embodiments. The specific structure and beneficial effects of the touch display panel can be found in the above description of the touch structure and the implementation of the touch display panel, and will not be described in detail here. The display device disclosed herein may be an electronic device with touch display function, such as a mobile phone or a tablet computer, and will not be listed one by one here.
[0128] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.
Claims
1. A touch structure disposed on one side of a display substrate, wherein, The touch structure includes multiple first touch electrodes and multiple second touch electrodes. Each first touch electrode is spaced apart along the row direction, and each first touch electrode includes multiple first electrode blocks spaced apart along the column direction and a transition bridge connecting two adjacent first electrode blocks. Each second touch electrode is spaced apart along the column direction, and each second touch electrode includes multiple second electrode blocks connected in series along the row direction. A transition bridge is intersected with a second touch electrode. The first electrode blocks and the second electrodes are located on the same electrode layer, and the transition bridge is located on one side of the electrode layer. An insulating layer is provided between the transition bridge and the electrode layer. Both the first and second touch electrodes are mesh structures formed by multiple grid lines. The grid lines of the adapter bridge are adapter lines, and the grid lines of the first and second electrode blocks are channel lines. At least one side of the adapter bridge is connected to a guide portion at the same layer as the adapter bridge. In the aforementioned adapter bridge and the first electrode block and the intersecting second touch electrode therebetween, a guide portion overlaps with at least one of the channel lines of the boundary of one of the first electrode block and the second touch electrode; a portion of the adapter line overlaps with a portion of the channel line of the boundary of at least one of the first electrode block and the second touch electrode; the adapter line connected to the guide portion overlaps with a portion of the channel line of the boundary of one of the first electrode block and the second touch electrode. In an overlapping guide portion and channel line, the guide portion and the channel line extend in the same direction, and at least a portion of the edge of the orthographic projection of the guide portion on the display substrate is located outside the edge of the orthographic projection of the channel line on the display substrate.
2. The touch structure according to claim 1, wherein, The number of channel lines overlapping with the guide portion is multiple; the guide portion includes multiple guide lines connected sequentially along the extension direction of its corresponding channel line in a direction away from the transition bridge, and one guide line overlaps with one channel line.
3. The touch structure according to claim 2, wherein, The guide line of the guide section that is furthest from the transition bridge overlaps with a portion of a channel line that is broken into two parts.
4. The touch structure according to claim 1, wherein, The guide line of the guide portion that is furthest from the transition bridge overlaps with a portion of a channel line that is interrupted into two parts, one part of which belongs to the first touch electrode and the other part belongs to the second touch electrode.
5. The touch structure according to claim 1 or 2, wherein, In a transition bridge and a first electrode block connected thereto: The adapter bridge is connected to the first electrode block through multiple through-holes penetrating the insulating layer; The area where the channel lines of the first electrode block intersect is called the channel intersection area, and the area where the transition lines intersect is called the transition intersection area. The boundary of the first electrode block has multiple channel intersection areas, and the channel intersection areas of the boundary of the first electrode block overlap with at least a portion of the transition intersection areas in a one-to-one correspondence. In the overlapping transition junction area and channel junction area on the boundary of the first electrode block, the boundary of the orthographic projection of the transition junction area on the display substrate is located outside the boundary of the orthographic projection of the channel junction area on the display substrate.
6. The touch structure according to claim 5, wherein, The mesh structure has multiple mesh openings, and the mesh openings of the electrode layer are surrounded by multiple channel lines, with a channel intersection area forming a vertex of the mesh opening; In a transition bridge and a first electrode block connected thereto: The number of vias is multiple, and they are located in the intersection area of multiple channels of the same mesh; at most a portion of the vias are located on the boundary of the first electrode block; The transition junction area where at least one of the vias located on the boundary of the first electrode block is situated is connected to one end of the transition bridge via a guide portion.
7. The touch structure according to claim 6, wherein, In the aforementioned adapter bridge and its connected first electrode block and intersecting second touch electrodes, the adapter bridge has guide portions on both sides that overlap with the boundary of the first electrode block, and the two guide portions that overlap with the boundary of the first electrode block are connected by at least one adapter wire. The boundary of the first electrode block is connected by at least one channel line in the region corresponding to the two guide portions, and the channel line overlaps with the adapter wire between the two guide portions. In an overlapping adapter line and a channel line, the adapter line and the channel line extend in the same direction, and the edge of the orthographic projection of the adapter line on the display substrate is located outside the edge of the orthographic projection of the channel line on the display substrate.
8. The touch structure according to claim 6, wherein, In the aforementioned adapter bridge and its connected first electrode block and intersecting second touch electrodes, the adapter bridge has guide portions on both sides that overlap with the boundary of the first electrode block, and the two guide portions that overlap with the boundary of the first electrode block are connected by at least one adapter cable, and the boundary of the first electrode block is intermittently set in the area corresponding to the two guide portions.
9. The touch structure according to claim 7 or 8, wherein, In the aforementioned adapter bridge and its connected first electrode block and intersecting second touch electrodes, a portion of the adapter wires overlaps with the boundary of the second touch electrode, and the adapter wires overlapping with the channel lines of the boundary of the second touch electrode are sequentially connected along the extension direction of the boundary of the second touch electrode. In an overlapping adapter line and a channel line, the adapter line and the channel line extend in the same direction, and the edge of the orthographic projection of the adapter line on the display substrate is located outside the edge of the orthographic projection of the channel line on the display substrate.
10. The touch structure according to claim 7, wherein, The boundary of the second touch electrode is discontinuous in its orthographic projection on the display substrate at both sides of the orthographic projection of the adapter bridge on the display substrate.
11. The touch structure according to claim 10, wherein, The orthographic projection of a portion of the boundary of the second touch electrode onto the display substrate lies within the boundary of the orthographic projection of the adapter bridge onto the display substrate.
12. The touch structure according to claim 1, wherein, In the overlapping adapter lines and the channel lines, the distance between the edge of the orthographic projection of the adapter line on the display substrate and the edge of the orthographic projection of the channel line on the display substrate is 0.9μm-1.5μm.
13. The touch structure according to claim 1, wherein, In the overlapping guide portion and the channel line, the distance between the edge of the orthographic projection of the guide portion on the display substrate and the edge of the orthographic projection of the channel line on the display substrate is 0.9μm-1.5μm.
14. The touch structure according to claim 4, wherein, In the overlapping transition junction area and channel junction area, the distance between the edge of the orthographic projection of the transition junction area on the display substrate and the edge of the orthographic projection of the channel junction area on the display substrate is 0.9μm-1.5μm.
15. A touch structure disposed on one side of a display substrate, wherein, The touch structure includes multiple first touch electrodes and multiple second touch electrodes. Each first touch electrode is spaced apart along the row direction, and each first touch electrode includes multiple first electrode blocks spaced apart along the column direction and a transition bridge connecting two adjacent first electrode blocks. Each second touch electrode is spaced apart along the column direction, and each second touch electrode includes multiple second electrode blocks connected in series along the row direction. A transition bridge is intersected with a second touch electrode. The first electrode blocks and the second electrodes are located on the same electrode layer, and the transition bridge is located on one side of the electrode layer. An insulating layer is provided between the transition bridge and the electrode layer. Both the first touch electrode and the second touch electrode are mesh structures formed by multiple grid lines. The grid lines of the adapter bridge are adapter lines, and the grid lines of the first electrode block and the second electrode block are channel lines. In one of the aforementioned adapter bridges and the first electrode block and the intersecting second touch electrodes thereconnected thereto, a portion of the adapter wire overlaps with a portion of the channel line at the boundary of at least one of the first electrode block and the second touch electrode. In an overlapping adapter line and channel line, the adapter line and channel line extend in the same direction, and the edge of the orthographic projection of the adapter line on the display substrate coincides with the edge of the orthographic projection of the channel line on the display substrate. The boundary of the second touch electrode is discontinuous in its orthographic projection on the display substrate at both sides of the orthographic projection of the adapter bridge on the display substrate.
16. The touch structure according to claim 15, wherein, The orthographic projection of a portion of the boundary of the second touch electrode onto the display substrate lies within the boundary of the orthographic projection of the adapter bridge onto the display substrate.
17. A touch display panel, wherein, include: Display substrate; According to any one of claims 1-16, the transition bridge is disposed on one side of the display substrate, the insulating layer covers the transition bridge, and the electrode layer is disposed on the surface of the insulating layer opposite to the display substrate.
18. A display device, wherein, Includes the touch display panel as described in claim 17.
Citation Information
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