Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. According to the invention, the touch metal wires are added in the source and drain electrode layer, and the touch metal wires are connected with the common electrode layer through the via holes, so that the purpose of adding a touch function to the display screen under the conditions of not adding a mask and not changing a manufacturing process is achieved. Compared with the prior art, a touch panel does not need to be additionally arranged, the product structure is simplified, the production cost is reduced, meanwhile, the original advantages of color, visual angle, response speed and the like of the liquid crystal display screen are kept, and the competitiveness of the product is remarkably improved. In addition, the common electrodes are subjected to touch block design, and the touch metal wires are connected with the common electrodes through a plurality of via holes, so that the touch precision and stability are further improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] With the development of display technology, liquid crystal displays (LCDs) have become widely used in electronic devices due to their advantages such as vibrant colors, wide viewing angles, and fast response times. In particular, in-plane switching (IPS) LCDs occupy an important position in the high-end display field thanks to their superior display performance.

[0003] In recent years, integrated touch display technology has become a significant trend in the display industry. Traditional touch display solutions use external touchscreens, increasing product thickness, reducing light transmittance, and raising costs. Therefore, in-cell touch technology has attracted attention. Several in-cell touch technology solutions are already available on the market. However, while existing IPS-type triple-gate zigzag TFT LCDs have advantages in color, viewing angle, response speed, and low power consumption, they generally lack touch functionality. Adding touch functionality to them requires traditional solutions to increase mask thickness or change the manufacturing process, increasing costs and extending the lead time, affecting yield and reliability.

[0004] Especially for mature IPS-type Triple Gate-ZigZag TFT LCD production lines, how to efficiently integrate touch functionality without increasing the number of masks or changing the process is a pressing problem for the industry. Existing solutions often require adding a touch metal layer between the source / drain electrode layer and the common electrode layer, or making significant modifications to the layer structure, which cannot meet the need to add touch functionality while maintaining the original process flow. Summary of the Invention

[0005] This invention provides a display panel and display device that helps to solve the problems of improving light transmittance and high color gamut performance.

[0006] In a first aspect, the present invention provides a display panel, comprising: Gate electrode layer; An active layer is disposed on the gate electrode layer; A source / drain electrode layer is disposed on the active layer, and the source / drain electrode layer includes touch metal lines; A common electrode layer is disposed on the source / drain electrode layer, and a plurality of vias are disposed on the common electrode layer; the common electrode layer includes a plurality of common electrodes, and the touch metal line is connected to the common electrodes through the plurality of vias; A pixel electrode layer is disposed on the common electrode layer and is connected to the source / drain electrode layer through the via.

[0007] In some embodiments, the gate electrode layer includes a scan line, the active layer includes a data line, the scan line intersects the projection of the data line onto the gate electrode layer, and the touch metal line is parallel to the projection of the data line or the scan line onto the gate electrode layer.

[0008] In some embodiments, the touch metal line is composed of molybdenum, aluminum, copper, silver, or an alloy of the above metals.

[0009] In some embodiments, the touch metal wire is made into a mesh or a serrated shape.

[0010] In some embodiments, the touch metal line is composed of two or more parallel sub-metal lines in at least a portion of the area, and the multiple sub-metal lines are connected in parallel.

[0011] In some embodiments, redundant segments or repair holes are provided at the intersection of the touch metal lines and the scan lines or data lines at the projection points perpendicular to the gate electrode layer.

[0012] In some embodiments, the touch metal line is connected to a plurality of common electrodes through a plurality of vias, the plurality of vias being spaced apart along the extension direction of the touch metal line.

[0013] In some embodiments, the via is located in a non-display area of ​​the common electrode layer or in the area where the thin-film transistor is located.

[0014] In some embodiments, the shape of the common electrode is rectangular, rhomboid, circular, or other polygonal.

[0015] Secondly, the present invention provides a display device comprising a display panel and a driver chip as described in any of the above claims, wherein the touch metal line is connected to the driver chip.

[0016] The display panel provided by this invention includes a gate electrode layer, an active layer, a source / drain electrode layer, a common electrode layer, and a pixel electrode layer. The source / drain electrode layer includes touch metal lines; the common electrode layer is disposed on the source / drain electrode layer and has multiple vias; the common electrode layer includes multiple common electrodes, and the touch metal lines are connected to the common electrodes through the multiple vias. This invention adds touch metal lines to the source / drain electrode layer and connects the touch metal lines to the common electrode layer through vias, achieving the goal of adding touch functionality to the display screen without increasing the mask or changing the manufacturing process. Compared with existing technologies, this invention eliminates the need for an additional touch panel, simplifying the product structure and reducing production costs, while maintaining the original advantages of IPS-type Triple Gate-ZigZag TFT LCD displays in terms of color, viewing angle, and response speed, significantly enhancing the product's competitiveness. Furthermore, by designing the common electrode with touch-segmented sections and connecting the touch metal lines to the common electrodes through multiple vias, touch accuracy and stability are further improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a display panel structure provided by the present invention; Figure 2 This is a schematic diagram of the first mask provided by the invention; Figure 3 This is a schematic diagram of the second mask provided by the invention; Figure 4 This is a schematic diagram of the third mask provided by the invention; Figure 5 This is a schematic diagram of the fourth mask provided by the invention; Figure 6 This is a schematic diagram of the fifth mask provided by the invention; Figure 7 This is a schematic diagram of the sixth mask provided by the invention. Figure 8 This is a schematic diagram of a display device provided by the present invention. Detailed Implementation

[0018] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Furthermore, the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order. The terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0020] Please see Figures 1 to 7 , Figure 1 This is a schematic diagram of a display panel provided by the present invention. The display panel includes: a substrate 101, a gate electrode layer 102, an active layer 104, a source / drain electrode layer 105, a common electrode layer 108, and a pixel electrode layer 110. The gate electrode layer 102 is disposed on the substrate 101. The active layer 104 is disposed on the gate electrode layer 102. The source / drain electrode layer 105 is disposed on the active layer 104 and includes touch metal lines 106. The common electrode layer 108 is disposed on the source / drain electrode layer 105 and has multiple vias. The common electrode layer 108 includes multiple common electrodes, and the touch metal lines 106 are connected to the common electrodes through the multiple vias. The pixel electrode layer 110 is disposed on the common electrode layer 108 and is connected to the source / drain electrode layer 105 through vias.

[0021] The gate electrode layer 102 is disposed on the substrate 101. The substrate 101 is the foundation and key support for carrying the entire thin-film transistor (TFT) array, pixel structure and touch function layer.

[0022] The display panel in this embodiment further includes a gate insulating layer 103 and a passivation layer 107. The gate insulating layer 103 is disposed on the gate electrode layer 102, and the passivation layer 107 is disposed on the source and drain electrode layer 105.

[0023] The active layer 104 may include a first active layer 1041 and a second active layer 1042. The first active layer 1041 may be an intrinsic amorphous silicon layer (Iα-Si), which is pure amorphous silicon without any intentional doping. When no voltage is applied to the gate, the Iα-Si layer has extremely high resistance, and there is no conduction between the source and drain, equivalent to the "off" state of the switch. When a positive voltage is applied to the gate electrode layer 102, an electron accumulation layer is induced at the interface between the gate insulating layer 103 and the Iα-Si, forming a conductive channel. At this time, current can flow from the source to the drain through this channel, equivalent to the "on" state of the switch. The Iα-Si layer determines the most important characteristic of the TFT—the on / off ratio. A good TFT has a very small current (pA level) when off and a sufficiently large current when on, so as to accurately control the charging of the liquid crystal pixels. The second active layer can be an N-type heavily doped amorphous silicon layer (N+ α-Si). If the source / drain electrodes are directly deposited on Iα-Si, a Schottky barrier will form due to the mismatch between the Fermi level of Iα-Si and the work function of the metal. This barrier hinders the flow of electrons, acting like an energy barrier at the interface, resulting in very high contact resistance and severely affecting the performance of the TFT. Because N+ α-Si is heavily doped, it has a large number of free electrons and excellent conductivity, similar to a metal. When sandwiched between the metal electrode and Iα-Si, it can form an ohmic contact with the metal electrode (with extremely low contact resistance). Furthermore, it can form a gradually changing band structure with the underlying Iα-Si, greatly reducing or even eliminating the barrier. The N+ α-Si layer ensures that the current from the source / drain metal electrodes can be efficiently injected and extracted into the Iα-Si channel without generating large voltage drops and power losses.

[0024] This invention adds touch functionality to a display screen without increasing the number of photomasks or changing the manufacturing process by adding touch metal lines 106 to the source / drain electrode layer 105 and connecting the touch metal lines 106 to the common electrode layer 108 via vias. This invention eliminates the need for an additional touch panel, simplifying the product structure and reducing production costs, while maintaining the original advantages of IPS-type Triple Gate-ZigZag TFT LCD displays in terms of color, viewing angle, and response speed, significantly enhancing the product's competitiveness. Furthermore, by designing the common electrode with touch-segmented sections and connecting the touch metal lines 106 to the common electrode via multiple vias, touch accuracy and stability are further improved.

[0025] This embodiment provides an IPS-type Triple Gate-ZigZag TFT LCD display panel based on an amorphous silicon 6Mask process. The process includes six photomasks, corresponding to the following layers: Please see Figure 2 , Figure 2 This is a schematic diagram of the first mask provided by the invention. The first mask consists of a gate electrode layer 102. The gate electrode layer 102 is formed on the substrate and includes structures such as scan lines and gate electrodes. The scan lines are used to provide scan signals and control the switching of the TFTs. The gate electrode material can be molybdenum, aluminum, copper, or an alloy thereof.

[0026] Please see Figure 3 , Figure 3 This is a schematic diagram of the second mask provided by the invention. The second mask consists of an active layer 104 (Island). The active layer 104 is formed on top of the gate electrode layer 102, and a gate insulating layer 103 is further disposed between the active layer 104 and the gate electrode layer 102. The active layer 104 forms the channel region of the TFT using a semiconductor material (such as amorphous silicon). The pattern of the active layer 104 corresponds to the gate electrode, ensuring the normal operation of the TFT.

[0027] Please see Figure 4 , Figure 4 This is a schematic diagram of the third mask provided by the invention. The third mask consists of a source / drain electrode layer 105 (SD). The source / drain electrode layer 105 includes data lines, a source electrode, a drain electrode, and touch metal lines 106 (TP lines). The data lines provide data signals. The source and drain electrodes connect to the TFT channel. The touch metal lines 106 are arranged parallel to the data lines and formed synchronously with them, requiring no additional mask.

[0028] Please see Figure 5 , Figure 5 This is a schematic diagram of the fourth photomask provided by the invention. Fourth photomask: Common electrode layer 108 (VITO). The common electrode layer 108 is formed on the source / drain electrode layer 105 and includes multiple common electrodes. The common electrode material is ITO (indium tin oxide), used to form the electric field required for the display. Multiple vias are provided on the common electrode layer 108 for connecting to the contact metal lines 106.

[0029] Please see Figure 6 , Figure 6 This is a schematic diagram of the fifth photomask provided by the invention. Fifth photomask: via contact layer. The via contact layer is used to form the connection vias between the pixel electrode and the drain electrode, and the connection vias between the touch metal line 106 and the common electrode. The vias are located in non-display areas to avoid affecting the display effect.

[0030] Please see Figure 7 , Figure 7This is a schematic diagram of the sixth photomask provided by the invention. The sixth photomask: Pixel Electrode Layer 110 (PITO). The Pixel Electrode Layer 110 is formed on top of the Common Electrode Layer 108, connected to the drain electrode through vias, and forms a parallel electric field with the Common Electrode to control the rotation of liquid crystal molecules, thereby achieving the display function.

[0031] Through the aforementioned six processes, this embodiment achieves integrated touch functionality without adding a mask. The touch metal line 106 is connected to a common electrode via vias, and the common electrode, after being designed in sections, can be used as a touch sensing electrode.

[0032] In some embodiments, the gate electrode layer 102 includes scan lines, and the active layer 104 includes data lines. The projections of the scan lines and data lines onto the gate electrode layer 102 intersect. The intersection of the projections of the data lines and scan lines onto the gate electrode layer 102 forms a matrix structure that defines the pixel areas of the display panel. The touch metal line 106 is parallel to the projections of the data lines or scan lines onto the gate electrode layer 102. For example, in some embodiments, the touch metal line 106 is arranged parallel to the data lines and aligned with them on the projections onto the gate electrode layer 102. This arrangement helps reduce signal crosstalk and improve touch accuracy. The width of the touch metal line 106 includes, but is not limited to, 1-5 μm, and the spacing between it and the data lines includes, but is not limited to, 1-3 μm, to ensure insulation reliability. Specifically, the width of the touch metal line 106 can be 1μm, 1.5μm, 2μm, 2.5μm, 3μm, 3.5μm, 4μm, 4.5μm or 5μm, and the distance between the touch metal line 106 and the data line can be 1μm, 1.5μm, 2μm, 2.5μm or 3μm.

[0033] In some embodiments, the touch metal line 106 is composed of molybdenum, aluminum, copper, silver, or an alloy of the above metals. When the touch metal line 106 uses molybdenum or its alloy (such as molybdenum-niobium alloy): molybdenum material has excellent compatibility with existing TFT array processes, especially the gate and source / drain electrode processes. Furthermore, molybdenum has good adhesion; it has strong adhesion to the glass substrate 101 and insulating layer materials such as silicon nitride and silicon oxide, effectively preventing the metal layer from peeling off in subsequent processes and improving product reliability. When the touch metal line 106 uses aluminum or its alloy (such as aluminum-neodymium alloy or aluminum-copper alloy): aluminum is a widely used interconnect material in display panel manufacturing processes, and its main advantage lies in its low resistivity. The low resistivity of aluminum helps reduce the resistance (RC delay) of the touch metal line 106 itself, thereby improving the transmission speed and response sensitivity of touch signals, especially suitable for large-size, high-resolution display panels. In addition, aluminum is easy to pattern. The etching process for aluminum is mature and easy to control, which is beneficial for forming fine, uniform metal lines and improving production yield. When the touch metal line 106 is made of copper or its alloy, copper has the lowest volume resistivity among all available materials, which minimizes the resistance of the touch signal line, effectively reducing signal attenuation and delay. This is crucial for achieving high-speed, high-precision touch and ultra-large panels. When the touch metal line 106 is made of silver or its alloy, silver is the most conductive material among all metals, possessing optimal conductivity and providing the best signal transmission performance. This ensures that the touch signal has an extremely high signal-to-noise ratio and response speed, making it suitable for high-end display products with extremely high touch performance requirements. When the touch metal line 106 is made of an alloy of the above metals: the purpose of the alloy material is to combine the advantages of each metal or overcome certain disadvantages of a single metal. For example, using an aluminum-copper alloy can enhance the anti-electromigration ability of aluminum conductors, preventing the formation of voids due to atomic migration under high current density, thereby improving long-term reliability. Using a molybdenum-niobium alloy can appropriately reduce the resistivity of molybdenum while maintaining its good adhesion and stability. By selecting appropriate alloy compositions, the selectivity of the material in a specific etching solution can be optimized, thereby obtaining better photolithographic pattern accuracy and better integration with existing processes.

[0034] In some embodiments, the touch metal line 106 is fabricated as a mesh or a serrated shape. In some embodiments, the touch metal line 106 is fabricated as a serrated shape, which introduces multiple periodic bending points compared to a straight metal line. This design gives the metal line higher ductility and flexibility. When the display panel undergoes thermal expansion, contraction, or slight deformation during manufacturing, assembly, or use, the stress can be more evenly distributed at the bends of the serrations, rather than concentrated in a single direction, thereby effectively suppressing breakage or cracking of the metal line due to stress concentration, significantly improving the long-term reliability and yield of the product. In addition, this serrated design can effectively reduce the generation of moiré patterns and improve display quality. In some embodiments, the touch metal line 106 is fabricated as a mesh, and the mesh structure can increase light transmittance, ensuring the high resolution and high brightness requirements of the display panel. The mesh structure has a larger and more uniform contact or coupling area with the common electrode block in the planar direction. This enhanced coupling helps to reduce the connection impedance between the touch metal line 106 and the common electrode, allowing the touch signal to be transmitted to the sensing electrode more efficiently. At the same time, when used as a touch driving electrode, it can also generate a more uniform electric field, which is beneficial to improving the signal-to-noise ratio and touch accuracy.

[0035] In some embodiments, the touch metal line 106 is composed of two or more parallel sub-metal lines in at least a portion of its area, with the sub-metal lines connected in parallel. The touch metal line 106 is composed of two parallel sub-metal lines crossing the scan line area. The width of the sub-metal lines includes, but is not limited to, 1-3 μm, and the spacing includes, but is not limited to, 0.5-2 μm. Specifically, the width of the sub-metal lines can be 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 3 μm, and the spacing of the sub-metal lines can be 0.5 μm, 1 μm, 1.5 μm, or 2 μm. The two sub-metal lines are connected in parallel at their endpoints. This design enhances the conductivity and breakage resistance of the touch metal line 106. Furthermore, when one of the sub-metal lines experiences an open circuit, the other can still transmit signals, improving product reliability.

[0036] In some embodiments, a redundant segment 106A or a repair hole is provided at the intersection of the touch metal line 106 and the scan line or data line projected onto the gate electrode layer 102. The redundant segment 106A, which is a protruding metal extension, is provided at the intersection of the touch metal line 106 and the scan line for laser repair or circuit repair when defects occur during photolithography or etching.

[0037] In some embodiments, the touch metal line 106 is connected to multiple common electrodes through multiple vias, which are spaced apart along the extension direction of the touch metal line 106. The touch metal line 106 is connected to the common electrode through multiple vias, with one via every 50-100 μm along the extension direction of the metal line. The vias are located in the TFT area to avoid occupying the pixel opening area, thereby maintaining high light transmittance. Specifically, the spacing of the vias along the extension direction of the metal line can be 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 85 μm, 90 μm, 95 μm, or 100 μm. In some embodiments, one via is provided every 100 μm along the extension direction of the metal line.

[0038] In some embodiments, vias are located in the non-display area of ​​the common electrode layer 108 or in the area where the thin-film transistor is located. Each pixel in the display area includes an "aperture area" for light transmission and a "non-aperture area" (such as an area covered by a black matrix) for arranging transistor lines. Placing vias in the non-display area (i.e., the non-aperture area of ​​the pixel, such as data lines, scan lines, or areas above the TFT that are covered by a black matrix) completely avoids the vias occupying the effective light-transmitting area. This design maximizes the aperture ratio of the pixels. A higher aperture ratio means that more backlight can pass through the liquid crystal layer, thereby directly improving the overall brightness and light utilization efficiency of the display panel. A brighter picture can be obtained with the same power consumption, or power consumption can be reduced with the same brightness requirements. At the same time, it avoids local light transmission unevenness caused by vias, ensuring color uniformity and high contrast display effects. This further saves wiring space and provides greater flexibility for high pixel density (PPI) designs. Secondly, the TFT area usually has a thicker insulating layer and protective layer. Making vias here allows for greater process tolerance, making them less prone to breakdown or short circuits, and resulting in higher connection reliability. In addition, this layout spatially separates the touch circuitry from the display driving circuitry, which helps reduce crosstalk between signals.

[0039] In some embodiments, the common electrode is rectangular, rhomboid, circular, or other polygonal in shape. In some embodiments, the common electrode is octagonal, with multiple octagonal common electrodes arranged regularly on the display panel to form a specific layout structure. In some embodiments, the common electrode adopts a rectangular shape design. The compact arrangement of rectangular common electrodes can improve the aperture ratio of the display panel and simplify the manufacturing process. Furthermore, the regular rectangular shape is easy to arrange and drive, making it particularly suitable for self-capacitance touch detection modes. Each electrode block acts as an independent sensing unit, resulting in a simple structure and direct driving circuit design. In some embodiments, the common electrode adopts a rhomboid shape design. The rhomboid structure makes the connection points between the touch metal line 106 and the common electrode more uniform, which is beneficial for improving the transmission efficiency of touch signals. In some embodiments, the common electrode adopts a circular design. This shape has no sharp corners, resulting in a more uniform electric field distribution. This helps reduce sensitivity differences in edge areas, making touch sensing more linear and smooth across the entire panel surface. Simultaneously, they can effectively suppress certain visual defects caused by electric field concentration at electrode edges. Therefore, circular common electrodes can reduce electric field edge effects, resulting in a more uniform display effect on the display panel.

[0040] It should be noted that optimizing the via placement and designing the shape of the common electrode can create a synergistic effect. For example, cleverly placing vias at the four corners (non-display areas) of the diamond-shaped common electrode ensures a high aperture ratio and provides a stable and reliable electrical connection for the diamond-shaped electrode, working together to achieve a high-performance, high-quality In-Cell touch display panel.

[0041] Please see Figure 8 , Figure 8 This is a schematic diagram of a display device provided by the present invention. The display device 100 includes a display panel 10 and a driver chip 20. The touch metal line is connected to the driver chip.

[0042] In this display device 100, the driver chip 20 is electrically connected to the display panel 10 and is used to provide driving signals to the display panel 10 to control the display and touch functions of the display panel 10. The touch metal line 106 is connected to the driver chip 20 to form a touch signal transmission channel, enabling the driver chip 20 to receive and process touch signals.

[0043] By connecting the driver chip 20 to the touch metal line 106, the display device 100 achieves integrated control of display and touch functions, simplifying the system structure and improving signal transmission efficiency and touch response speed. The driver chip 20 can process display signals and touch signals simultaneously, enabling collaborative work between display and touch, and enhancing the user interaction experience.

[0044] The display device 100 also includes a circuit module. The circuit module is electrically connected to the display panel 10 and mainly includes a timing control circuit, a driving circuit, and a backlight control circuit. The timing control circuit receives externally input video signals and converts them into timing signals suitable for driving the display panel 10. The driving circuit receives signals output by the timing control circuit and generates scan signals and data signals to drive the thin-film transistor array 102. The backlight control circuit adjusts the brightness of the red, green, and blue light-emitting chips in the backlight module according to factors such as the displayed content and ambient light to achieve optimal display effects and energy-saving goals.

[0045] When the display device is operating, the circuit module first processes the input image signal into a driving signal suitable for the display panel. The driving circuit in the driving chip 20 controls the switching state of each pixel unit in the thin-film transistor array, thereby controlling the alignment direction of the liquid crystal molecules in the liquid crystal layer. Simultaneously, the circuit module also outputs a backlight control signal to control the luminous intensity and timing of the red, green, and blue light-emitting chips in the backlight module. The light emitted from the backlight module, after being modulated by the liquid crystal layer and filtered by the polarizer, forms a visible image, thus achieving the display function.

[0046] In some embodiments, the display device 100 further includes an ambient light sensor and an intelligent dimming control unit, which can automatically adjust the backlight brightness according to the ambient light intensity, ensuring both display quality and energy saving. The intelligent dimming control unit can dynamically adjust the three-color light-emitting chips in the backlight module according to the brightness of the displayed content, thereby improving display contrast and color saturation.

[0047] The display device 100 provided by this invention can be applied to car HUDs, fighter jet HUDs, projection equipment, televisions, computer monitors, mobile phones, tablets, or other electronic devices with display functions. In particular, the HUD's display interface design can utilize solid-color patterns, which further helps to improve light transmittance and color display effects.

[0048] The display device 100 provided by this invention includes a display panel 10 and a driver chip 20. By adding touch metal lines to the source and drain electrode layers and connecting the touch metal lines to the common electrode layer through vias, the invention achieves the goal of adding touch functionality to the display screen without increasing the mask or changing the manufacturing process. This invention eliminates the need for an additional touch panel, simplifying the product structure and reducing production costs, while maintaining the original advantages of IPS-type Triple Gate-ZigZag TFT LCD displays such as color, viewing angle, and response speed, significantly enhancing the product's competitiveness. Furthermore, by designing the common electrode with touch-segmented sections and connecting the touch metal lines to the common electrode through multiple vias, the touch accuracy and stability are further improved.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized by, The display panel comprises: a gate electrode layer; an active layer disposed on the gate electrode layer; a source-drain electrode layer disposed on the active layer, the source-drain electrode layer comprising a touch metal line; a common electrode layer disposed on the source-drain electrode layer, the common electrode layer comprising a plurality of vias; the common electrode layer comprising a plurality of common electrodes, the touch metal line being connected to the common electrodes through the vias; a pixel electrode layer disposed on the common electrode layer, the pixel electrode layer being connected to the source-drain electrode layer through the vias.

2. The display panel of claim 1, wherein, The gate electrode layer comprises a scan line, the active layer comprises a data line, and the scan line and the data line intersect in a projection perpendicular to the gate electrode layer, wherein the touch metal line is parallel to the projection of the data line or the scan line perpendicular to the gate electrode layer.

3. The display panel of claim 1, wherein, The touch metal line is made of molybdenum, aluminum, copper, silver, or an alloy of the above-mentioned metals.

4. The display panel of claim 3, wherein, The touch metal line is made in a mesh or zigzag shape.

5. The display panel of claim 3, wherein, The touch metal line is composed of two or more parallel sub-metal lines in at least part of the area, and the plurality of sub-metal lines are connected in parallel.

6. The display panel of claim 3, wherein, The touch metal line is provided with a redundant section or a repair hole at the intersection of the projection of the touch metal line and the scan line or the data line perpendicular to the gate electrode layer.

7. The display panel of claim 1, wherein, The touch metal line is connected to the plurality of common electrodes through the plurality of vias, and the plurality of vias are distributed along the extension direction of the touch metal line.

8. The display panel of claim 7, wherein, The vias are located in a non-display area or a thin film transistor area of the common electrode layer.

9. The display panel of claim 1, wherein, The common electrode has a rectangular, diamond, circular, or other polygonal shape.

10. A display device, characterized by comprising: The display panel comprises a driving chip connected to the touch metal line.

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