Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device, the display panel comprises a binding area, a transition area and a display area, and the transition area is located between the display area and the binding area; the source-drain metal layer is located on one side, away from the substrate, of the gate layer; the source and drain electrode metal layer of the transition area is blocked from the source and drain electrode metal layer of the binding area, and the source and drain electrode metal layer of the transition area is blocked from the source and drain electrode metal layer of the display area. The source and drain electrode metal layer of the binding area is connected with the grid electrode layer through a via hole, the source and drain electrode metal layer of the display area is connected with the grid electrode layer through a via hole, and the source and drain electrode metal layer of the binding area is electrically connected with the source and drain electrode metal layer of the display area through the grid electrode layer. The source and drain electrode metal layer of the transition area is subjected to blocking treatment, and even if the source and drain electrode metal layer of the transition area is corroded, the source and drain electrode metal layer of the binding area and the source and drain electrode metal layer of the display area cannot be affected. And the source and drain metal layer in the transition region can also prevent further invasion of water vapor, and finally, the VDD signal line can be normally transmitted.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) display technology does not require a backlight, but uses a very thin organic material coating and a glass substrate (or flexible organic substrate). When current passes through, these organic materials will emit light. OLED screens have the advantages of high contrast, wide viewing angle, and low power consumption, and are currently widely used in mobile electronic products.

[0003] In OLED products, the middle area between the periphery and the display area often has abnormalities during the reliability test. This is because the metal traces in the middle area are protected by a silicon oxide insulating film, which has a poor waterproof effect and has poor protection against water vapor intrusion.

[0004] When the metal wiring is a VDD (Voltage Drain Drain, drain power supply voltage) signal line that provides a high-level voltage signal, in the case of water vapor intrusion, the current of the VDD signal line increases, and then an electrochemical corrosion reaction occurs. Once the VDD signal line is corroded, it will affect the normal transmission of the signal. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a display panel and a display device to achieve normal transmission of signals. The specific technical solution is as follows:

[0006] In a first aspect, an embodiment of the present application provides a display panel having a binding area, a transition area and a display area, wherein the transition area is located between the display area and the binding area;

[0007] The display panel comprises:

[0008] A source-drain metal layer and a gate layer, wherein the source-drain metal layer is located on a side of the gate layer away from the substrate;

[0009] The source-drain metal layer of the transition region is blocked from the source-drain metal layer of the binding region, and the source-drain metal layer of the transition region is blocked from the source-drain metal layer of the display region;

[0010] The source-drain metal layer of the binding area is connected to the gate layer through a via, the source-drain metal layer of the display area is connected to the gate layer through a via, and the source-drain metal layer of the binding area is electrically connected to the source-drain metal layer of the display area through the gate layer.

[0011] In an embodiment of the present application, the display panel has a binding area, a transition area and a display area, wherein the transition area is located between the display area and the binding area; the display panel includes: a source-drain metal layer and a gate layer, wherein the source-drain metal layer is located on the side of the gate layer away from the substrate; the source-drain metal layer of the transition area is blocked from the source-drain metal layer of the binding area, and the source-drain metal layer of the transition area is blocked from the source-drain metal layer of the display area. The source-drain metal layer of the binding area is connected to the gate layer through a via, the source-drain metal layer of the display area is connected to the gate layer through a via, and the source-drain metal layer of the binding area is electrically connected to the source-drain metal layer of the display area through the gate layer. The present application performs a separation process on the source-drain metal layer, so that even if the source-drain metal layer of the transition area is corroded, it will not affect the source-drain metal layer of the binding area and the source-drain metal layer of the display area. The source and drain metal layers in the transition zone can also prevent water vapor from further invading the transition zone. When the source and drain metal layers are VDD signal lines, since the source and drain metal layers in the binding zone are electrically connected to the source and drain metal layers in the display zone through the gate layer, the VDD signal line can be transmitted normally.

[0012] In a possible implementation, the display panel further includes a passivation layer, and the passivation layer is arranged on a side of the source and drain metal layer away from the substrate;

[0013] The binding area includes an indium tin metal oxide layer and a signal connection line;

[0014] The indium tin metal oxide layer is arranged on a side of the source and drain metal layer away from the substrate; the indium tin metal oxide layer is connected to the source and drain metal layer through a via hole in the passivation layer;

[0015] The signal connection line is arranged on the indium tin metal oxide layer and is located on a side away from the substrate.

[0016] In the embodiment of the present application, the binding area includes an indium tin metal oxide layer and a signal connection line. When water vapor invades, the indium tin metal oxide layer and the signal connection line can isolate the water vapor and prevent the water vapor from entering the binding area.

[0017] In a possible implementation, the display area includes a dam structure and a glass cover plate;

[0018] The dam structure is arranged on a side of the passivation layer away from the substrate;

[0019] The glass cover is arranged on a side of the dam structure away from the substrate.

[0020] In the embodiment of the present application, the display area includes a dam structure and a glass cover plate. When water vapor invades, the dam structure and the glass cover plate can block most of the water vapor and prevent the water vapor from entering the display area.

[0021] In a possible implementation, the display panel further includes a light-shielding metal layer;

[0022] The light-shielding metal layer is arranged on a side of the gate layer close to the substrate, and the light-shielding metal layer is connected to the gate layer through a via hole.

[0023] Because the VDD signal line has strict requirements on resistance, when the source and drain metal layers are segmented and part of the source and drain metal layers are removed, the resistance of the VDD signal line is reduced, and the reduced part is further compensated by the light-shielding metal layer below, and the original segmented source and drain metal layers in the transition area can be used to block water vapor. In the embodiment of the present application, the original resistance can be maintained and the water vapor resistance of the transition area can be improved, thereby ensuring that the VDD signal line can be transmitted normally.

[0024] In a possible implementation, the light-shielding metal layer is made of aluminum or copper.

[0025] Aluminum or copper has good electrical conductivity. When the light-shielding metal layer is made of aluminum or copper, it exhibits excellent electrical conductivity.

[0026] In a possible implementation manner, the transition zone further includes a resin layer and an indium tin metal oxide layer;

[0027] The resin layer is arranged on a side of the passivation layer away from the substrate;

[0028] The indium tin metal oxide layer of the transition zone is arranged on a side of the resin layer away from the substrate;

[0029] The indium tin metal oxide layer in the binding region and the indium tin metal oxide layer in the transition region are an integrated structure.

[0030] In the embodiment of the present application, the process is the existing technical route, and the cost is equivalent to the existing process. On the basis of not adding any additional steps, a resin layer and an indium tin metal oxide layer are added to the transition zone, and the ability of the transition zone to isolate water vapor is improved through double-layer protection.

[0031] In a possible implementation manner, an orthographic projection of the indium tin metal oxide layer in the transition region on the substrate overlaps with an orthographic projection of the glass cover plate in the display region on the substrate.

[0032] In the embodiment of the present application, the orthographic projection of the indium tin metal oxide layer in the transition zone on the substrate overlaps with the orthographic projection of the glass cover plate in the display zone on the substrate, indicating that the indium tin metal oxide layer in the transition zone at least extends to the edge of the glass cover plate in the display zone, and the indium tin metal oxide layer and the resin layer can completely cover the transition zone. Through the indium tin metal oxide layer + resin layer, double-layer protection of the transition zone is achieved, further improving the ability of the transition zone to isolate water vapor.

[0033] In a possible implementation manner, the indium tin metal oxide layer in the transition region extends to the dam structure in the display region.

[0034] In the embodiment of the present application, since the indium tin metal oxide layer in the transition zone is obtained by extending the indium tin metal oxide layer in the binding zone, the indium tin metal oxide layer in the binding zone can be further extended to the dam structure in the display zone. In this case, an additional indium tin metal oxide layer is also added above the display zone, which helps to improve the ability of the display zone to isolate water vapor.

[0035] In a possible embodiment, the display panel also includes a first insulating layer, which is located between the source and drain metal layer and the gate layer, the source and drain metal layer in the binding area is connected to the gate layer through a via in the first insulating layer, and the source and drain metal layer in the display area is connected to the gate layer through a via in the first insulating layer.

[0036] In an embodiment of the present application, there is also a first insulating layer between the source and drain metal layers and the gate layer, and the source and drain metal layers and the gate layer are connected through vias in the first insulating layer. In this way, it can be ensured that the necessary source and drain metal layers and the gate layer are connected.

[0037] In a possible implementation, the display panel further includes a second insulating layer, where the second insulating layer is located between the light-shielding metal layer and the gate layer, and the light-shielding metal layer is connected to the gate layer through a via hole in the second insulating layer.

[0038] In an embodiment of the present application, there is a second insulating layer between the shading metal layer and the gate layer, and the shading metal layer and the gate layer are connected through vias in the second insulating layer. In this way, it can be ensured that the necessary shading metal layer and gate layer are connected.

[0039] In a second aspect, an embodiment of the present application provides a display device, which includes a display panel as described in any one of the present application.

[0040] Beneficial effects of the embodiments of the present invention:

[0041] In an embodiment of the present application, the display panel has a binding area, a transition area and a display area, wherein the transition area is located between the display area and the binding area; the display panel includes: a source-drain metal layer and a gate layer, wherein the source-drain metal layer is located on the side of the gate layer away from the substrate; the source-drain metal layer of the transition area is blocked from the source-drain metal layer of the binding area, and the source-drain metal layer of the transition area is blocked from the source-drain metal layer of the display area. The source-drain metal layer of the binding area is connected to the gate layer through a via, the source-drain metal layer of the display area is connected to the gate layer through a via, and the source-drain metal layer of the binding area is electrically connected to the source-drain metal layer of the display area through the gate layer. The present application performs a separation process on the source-drain metal layer, so that even if the source-drain metal layer of the transition area is corroded, it will not affect the source-drain metal layer of the binding area and the source-drain metal layer of the display area. The source and drain metal layers in the transition zone can also prevent water vapor from further invading the transition zone. When the source and drain metal layers are VDD signal lines, since the source and drain metal layers in the binding zone are electrically connected to the source and drain metal layers in the display zone through the gate layer, the VDD signal line can be transmitted normally.

[0042] Of course, it is not necessary to achieve all of the advantages described above at the same time to implement any product or method of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0044] Figure 1 is a schematic diagram of a display panel in the prior art;

[0045] Figure 2 A first schematic diagram of a display panel provided in an embodiment of the present application;

[0046] Figure 3 A second schematic diagram of a display panel provided in an embodiment of the present application;

[0047] Figure 4 A third schematic diagram of a display panel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field based on this application belong to the scope of protection of the present invention.

[0049] OLED (Organic Light-Emitting Diode) display technology does not require a backlight, but uses a very thin organic material coating and a glass substrate (or flexible organic substrate). When current passes through, these organic materials will emit light. OLED screens have the advantages of high contrast, wide viewing angle, and low power consumption, and are currently widely used in mobile electronic products.

[0050] In OLED products, the middle area between the periphery and the display area often experiences abnormalities during the reliability test. This is because the periphery can rely on Figure 1 The ITO indium tin metal oxide layer 14 + COF signal connection line 15 in the display area can also be isolated from water vapor. Figure 1 The Dam 16 + CG glass cover 17 in the middle block most of the water vapor, while the metal traces in the middle area are protected only by the silicon oxide insulating film. Figure 1 The passivation layer 13 in the silicon oxide insulating film is not good in waterproofing effect, and its protection ability is poor when water vapor invades.

[0051] When the metal wiring is a VDD (Voltage Drain Drain, drain power supply voltage) signal line that provides a high-level voltage signal, in the case of water vapor intrusion, the current of the VDD signal line increases, and then an electrochemical corrosion reaction occurs. Once the VDD signal line is corroded, it will affect the normal transmission of the signal.

[0052] In order to achieve normal signal transmission, in a first aspect, an embodiment of the present application provides a display panel, see Figure 2 , having a binding area 101, a transition area 102 and a display area 103, wherein the transition area 102 is located between the display area 103 and the binding area 101;

[0053] In OLED products, the bonding area 101 is the peripheral bonding area, which usually refers to the area connected to the driving circuit or other components of the OLED display. This part is the key area for electrically connecting the OLED panel to other components such as circuit boards, which usually involves welding or bonding processes. The bonding area is usually located on the upper frame of the display panel.

[0054] The display area 103 is usually referred to as the AA (Active Area) area. For example, the AA area of ​​a mobile phone screen is the black part of the mobile phone screen. The user can only operate in the AA area, and it is invalid in other areas.

[0055] The display panel comprises:

[0056] A source-drain metal layer and a gate layer, wherein the source-drain metal layer is located on a side of the gate layer away from the substrate;

[0057] The source and drain metal layer 11 (Source & Drain, SD) includes a source and drain metal layer 112 in the transition area 102 , a source and drain metal layer 111 in the binding area 101 , and a source and drain metal layer 113 in the display area 103 .

[0058] The source-drain metal layer of the transition region is blocked from the source-drain metal layer of the binding region, and the source-drain metal layer of the transition region is blocked from the source-drain metal layer of the display region;

[0059] Since the source-drain metal layer 112 of the transition zone 102 is blocked by the source-drain metal layer 111 of the binding zone 101 and the source-drain metal layer 113 of the display zone 103, even if the source-drain metal layer 112 of the transition zone 102 is corroded, it will not affect the source-drain metal layer 111 of the binding zone 101 and the source-drain metal layer 113 of the display zone 103. When the source-drain metal layer 111 of the binding zone 101 and the source-drain metal layer 113 of the display zone 103 are VDD signal lines, signal transmission can be carried out normally.

[0060] The source-drain metal layer 112 of the transition region 102 is not connected to the gate layer Gate12 , that is, the source-drain metal layer 112 of the transition region 102 is not used as a VDD signal line. Retaining the source-drain metal layer 112 of the transition region 102 can prevent water vapor from further invading the transition region 102 .

[0061] The source-drain metal layer of the binding area is connected to the gate layer through a via, the source-drain metal layer of the display area is connected to the gate layer through a via, and the source-drain metal layer of the binding area is electrically connected to the source-drain metal layer of the display area through the gate layer.

[0062] The source-drain metal layer 112 of the transition region 102 is not used as a VDD signal line, but the source-drain metal layer 111 of the binding region 101 and the source-drain metal layer 113 of the display region 103 can be VDD signal lines.

[0063] In an embodiment of the present application, the display panel has a binding area, a transition area and a display area, wherein the transition area is located between the display area and the binding area; the display panel includes: a source-drain metal layer and a gate layer, wherein the source-drain metal layer is located on the side of the gate layer away from the substrate; the source-drain metal layer of the transition area is blocked from the source-drain metal layer of the binding area, and the source-drain metal layer of the transition area is blocked from the source-drain metal layer of the display area. The source-drain metal layer of the binding area is connected to the gate layer through a via, the source-drain metal layer of the display area is connected to the gate layer through a via, and the source-drain metal layer of the binding area is electrically connected to the source-drain metal layer of the display area through the gate layer. The present application performs a separation process on the source-drain metal layer, so that even if the source-drain metal layer of the transition area is corroded, it will not affect the source-drain metal layer of the binding area and the source-drain metal layer of the display area. The source and drain metal layers in the transition zone can also prevent water vapor from further invading the transition zone. When the source and drain metal layers are VDD signal lines, since the source and drain metal layers in the binding zone are electrically connected to the source and drain metal layers in the display zone through the gate layer, the VDD signal line can be transmitted normally.

[0064] In some embodiments, the source-drain metal line can also be a Data In signal line, which is a connection line for receiving input data and is usually used in digital circuits and communication interfaces. Its main functions include: Data transmission: The Data In line is used to transmit external data to the chip or module so that it can be processed or responded to. Interface connection: In various interfaces (such as SPI, I2C, UART, etc.), the Data In signal line connects the master device and the slave device, allowing bidirectional or unidirectional transmission of data. Signal integrity: In order to ensure the accuracy of data transmission, the design of the Data In signal line usually takes into account the integrity and anti-interference ability of the signal, including selecting appropriate wiring methods and matching impedance.

[0065] In the embodiment of the present application, the source-drain metal layer of the transition zone is not used as a signal line, and the source-drain metal layer of the transition zone is blocked from the source-drain metal layer of the binding zone, and the source-drain metal layer of the transition zone is blocked from the source-drain metal layer of the display zone, ensuring that the source-drain metal layer of the transition zone will not affect the source-drain metal layer of the binding zone or the source-drain metal layer of the display zone. Moreover, the source-drain metal layer of the binding zone and the source-drain metal layer of the display zone are both connected to the gate layer, and even if the source-drain metal layer of the transition zone is blocked from both regions, the source-drain metal layer of the binding zone and the source-drain metal layer of the display zone can be electrically connected through the gate layer. In the prior art, the source-drain metal layer of the binding zone and the source-drain metal layer of the display zone are rarely affected by water vapor, and when water vapor invades, the signal transmission of the two regions is basically unaffected. In addition, the source-drain metal layer of the transition zone is not used as a signal line, but is only used to block water vapor for the transition zone, so that the source-drain metal layer in the display panel can transmit signals normally.

[0066] In some embodiments, the display panel also includes a first insulating layer 18, which is located between the source and drain metal layer and the gate layer. The source and drain metal layer 111 of the binding area 101 is connected to the gate layer 12 through vias in the first insulating layer 18, and the source and drain metal layer 113 of the display area 103 is connected to the gate layer 12 through vias in the first insulating layer 18.

[0067] The gate layer usually participates in the pixel display in the display area and is generally positively charged. The source and drain metal layers may be positively / negatively charged depending on the actual design. By setting an insulating layer between the gate layer and the source and drain metal layer, the gate layer and the source and drain metal layer can be separated to avoid mutual influence between the gate layer and the source and drain metal layer.

[0068] In some embodiments, an etching process can be used to punch holes in the layer between the source and drain metal layer and the gate layer so that the source and drain metal layer and the gate layer can be electrically connected through the vias. Etching, in English, is a semiconductor manufacturing process and is a very important step in microelectronic IC manufacturing processes and micro-nano manufacturing processes. Etching is actually photolithography corrosion, which first exposes the photoresist through photolithography, and then corrodes the desired part through other methods. With the development of micro-manufacturing technology, etching is a general term for stripping and removing materials through solutions, reactive ions or other mechanical methods.

[0069] In some embodiments, the source and drain metal layers can be punched to overlap the gate layer when the first insulating layer 18 is exposed and developed. Exposure and development are steps in the preparation process, which are mainly used to transfer the photolithography pattern to the photoresist. Exposure is to irradiate the light source (such as ultraviolet light) through a mask onto the photoresist to change its chemical properties, and then the developer removes the unexposed or exposed parts to form a pattern.

[0070] In an embodiment of the present application, there is also a first insulating layer between the source and drain metal layers and the gate layer, and the source and drain metal layers and the gate layer are connected through vias in the first insulating layer. In this way, it can be ensured that the necessary source and drain metal layers and the gate layer are connected.

[0071] In some embodiments, the display panel further includes a passivation layer (PVX) 13, and the passivation layer is arranged on a side of the source and drain metal layer away from the substrate;

[0072] The passivation layer also includes a silicon oxide protective film, which is located above the source and drain metal layers. The passivation layer and the silicon oxide protective film can be used to block water vapor when water vapor invades, thereby protecting the source and drain metal layers below from being invaded by water vapor.

[0073] The binding area 101 includes an indium tin metal oxide layer 14 and a signal connection line 15;

[0074] The indium tin metal oxide layer is arranged on a side of the source and drain metal layer away from the substrate; the indium tin metal oxide layer is connected to the source and drain metal layer through a via hole in the passivation layer;

[0075] In some embodiments, a hole can be punched in the layer between the source and drain metal layer and the indium tin metal oxide layer by an etching process, so that the source and drain metal layer and the indium tin metal oxide layer can be electrically connected through the via hole. When the passivation layer 13 is exposed and developed, the source and drain metal layer can be punched to overlap the indium tin metal oxide layer 14.

[0076] The signal connection line is arranged on the indium tin metal oxide layer and is located on a side away from the substrate.

[0077] The signal connection line COF is used to realize the connection between the binding area 101 and the display panel.

[0078] In the embodiment of the present application, the binding area includes an indium tin metal oxide layer and a signal connection line. When water vapor invades, the indium tin metal oxide layer and the signal connection line can isolate the water vapor and prevent the water vapor from entering the binding area.

[0079] In some embodiments, the display area 103 includes a dam 16 and a cover glass (Cover Glass, CG) 17;

[0080] The dam structure is arranged on a side of the passivation layer away from the substrate;

[0081] The glass cover is arranged on a side of the dam structure away from the substrate.

[0082] In the embodiment of the present application, the display area includes a dam structure and a glass cover plate. When water vapor invades, the dam structure and the glass cover plate can block most of the water vapor and prevent the water vapor from entering the display area.

[0083] In some embodiments, see Figure 3 , the display panel further includes a light shielding metal layer (Shleter, SHL) 19;

[0084] The light-shielding metal layer is arranged on a side of the gate layer close to the substrate, and the light-shielding metal layer is connected to the gate layer through a via hole.

[0085] Because the VDD signal line has strict requirements on resistance, when the source and drain metal layers are segmented and part of the source and drain metal layers are removed, the resistance of the VDD signal line is reduced, and the reduced part is further compensated by the light-shielding metal layer below, and the original segmented source and drain metal layers in the transition zone can be used to block water vapor. In the embodiment of the present application, the original resistance can be maintained and the ability of the transition zone to resist water vapor can be improved, thereby ensuring that the VDD signal line can be transmitted normally, wherein the light-shielding metal layer can be made of aluminum or copper. Aluminum or copper has good electrical conductivity. When the light-shielding metal layer is made of aluminum or copper, it exhibits excellent electrical conductivity.

[0086] In some embodiments, the display panel further includes a second insulating layer 20, wherein the second insulating layer is located between the light-shielding metal layer and the gate layer, and the light-shielding metal layer is connected to the gate layer through a via hole in the second insulating layer.

[0087] The gate layer usually participates in the pixel display in the display area and is generally positively charged. The light-shielding metal layer may be positively / negatively charged depending on the actual design. By setting an insulating layer between the gate layer and the light-shielding metal layer, the gate layer and the light-shielding metal layer can be separated to avoid mutual influence between the gate layer and the light-shielding metal layer.

[0088] In some embodiments, a hole can be punched in the layer between the light shielding metal layer and the gate layer by an etching process so that the light shielding metal layer and the gate layer can be electrically connected through the via hole. The light shielding metal layer can also be punched to overlap the gate layer when the second insulating layer 20 is exposed and developed.

[0089] In an embodiment of the present application, there is a second insulating layer between the shading metal layer and the gate layer, and the shading metal layer and the gate layer are connected through vias in the second insulating layer. In this way, it can be ensured that the necessary shading metal layer and gate layer are connected.

[0090] In some embodiments, see Figure 4 , the transition zone also includes a resin layer 21 and an indium tin metal oxide layer;

[0091] The resin layer is arranged on a side of the passivation layer away from the substrate;

[0092] The indium tin metal oxide layer in the transition zone is arranged on a side of the resin layer away from the substrate;

[0093] The indium tin metal oxide layer in the binding region and the indium tin metal oxide layer in the transition region are an integrated structure.

[0094] The resin layer is a structure originally located in the display area. By changing the layout of the display panel, it is possible to add a resin layer in the transition area to further improve the waterproof ability without adding any steps.

[0095] The tin metal oxide layer is the structure of the binding zone. The tin metal oxide layer in the binding zone is extended to the transition zone, so that a tin metal oxide layer can be added to the transition zone without adding any process steps to further improve the waterproof ability.

[0096] In the embodiment of the present application, the process is the existing technical route, and the cost is equivalent to the existing process. On the basis of not adding any additional steps, a resin layer and an indium tin metal oxide layer are added to the transition zone, and the ability of the transition zone to isolate water vapor is improved through double-layer protection.

[0097] In some embodiments, the orthographic projection of the indium tin metal oxide layer in the transition region on the substrate overlaps with the orthographic projection of the glass cover plate in the display region on the substrate.

[0098] One end of the indium tin metal oxide layer in the transition zone is connected to the indium tin metal oxide layer in the binding zone, and the other end is located in the transition zone or even the display zone. It is sufficient as long as the orthographic projection of the indium tin metal oxide layer in the transition zone on the substrate overlaps with the orthographic projection of the glass cover plate in the display zone on the substrate, that is, the range of the other end of the indium tin metal oxide layer in the transition zone includes the edge of the glass cover plate CG in the display zone to the edge of the dam structure Dam in the display zone.

[0099] In the embodiment of the present application, the orthographic projection of the indium tin metal oxide layer in the transition zone on the substrate overlaps with the orthographic projection of the glass cover plate in the display zone on the substrate, indicating that the indium tin metal oxide layer in the transition zone at least extends to the edge of the glass cover plate in the display zone, and the indium tin metal oxide layer and the resin layer can completely cover the transition zone. Through the indium tin metal oxide layer + resin layer, double-layer protection of the transition zone is achieved, further improving the ability of the transition zone to isolate water vapor.

[0100] In some embodiments, the indium tin metal oxide layer in the transition region extends to the dam structure in the display region.

[0101] In the embodiment of the present application, since the indium tin metal oxide layer in the transition zone is obtained by extending the indium tin metal oxide layer in the binding zone, the indium tin metal oxide layer in the binding zone can be further extended to the dam structure in the display zone. In this case, an additional indium tin metal oxide layer is also added above the display zone, which helps to improve the ability of the display zone to isolate water vapor.

[0102] The second aspect of the present application provides a display device, which includes the display panel described above, wherein the display device can be any product with a display function, such as a mobile phone, a tablet computer, a television, a laptop computer, a digital photo frame, a navigator, etc.

[0103] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0104] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A display panel, characterized in that: It has a binding area, a transition area and a display area, wherein the transition area is located between the display area and the binding area; The display panel comprises: A source-drain metal layer and a gate layer, wherein the source-drain metal layer is located on a side of the gate layer away from the substrate; The source-drain metal layer of the transition region is blocked from the source-drain metal layer of the binding region, and the source-drain metal layer of the transition region is blocked from the source-drain metal layer of the display region; The source-drain metal layer of the binding area is connected to the gate layer through a via, the source-drain metal layer of the display area is connected to the gate layer through a via, and the source-drain metal layer of the binding area is electrically connected to the source-drain metal layer of the display area through the gate layer.

2. The display panel according to claim 1, characterized in that: The display panel further comprises a passivation layer, wherein the passivation layer is arranged on a side of the source and drain metal layer away from the substrate; The binding area includes an indium tin metal oxide layer and a signal connection line; The indium tin metal oxide layer is arranged on a side of the source and drain metal layer away from the substrate; the indium tin metal oxide layer is connected to the source and drain metal layer through a via hole in the passivation layer; The signal connection line is arranged on the indium tin metal oxide layer and is located on a side away from the substrate.

3. The display panel according to claim 2, characterized in that: The display area includes a dam structure and a glass cover plate; The dam structure is arranged on a side of the passivation layer away from the substrate; The glass cover is arranged on a side of the dam structure away from the substrate.

4. The display panel according to claim 1, characterized in that: The display panel further includes a light-shielding metal layer; The light-shielding metal layer is arranged on a side of the gate layer close to the substrate, and the light-shielding metal layer is connected to the gate layer through a via hole.

5. The display panel according to claim 3, characterized in that: The light-shielding metal layer is made of aluminum or copper.

6. The display panel according to claim 3, characterized in that: The transition zone also includes a resin layer and an indium tin metal oxide layer; The resin layer is arranged on a side of the passivation layer away from the substrate; The indium tin metal oxide layer of the transition zone is arranged on a side of the resin layer away from the substrate; The indium tin metal oxide layer in the binding region and the indium tin metal oxide layer in the transition region are an integrated structure.

7. The display panel according to claim 6, characterized in that: The orthographic projection of the indium tin metal oxide layer in the transition region on the substrate overlaps with the orthographic projection of the glass cover plate in the display region on the substrate.

8. The display panel according to claim 7, characterized in that: The indium tin metal oxide layer in the transition region extends to the dam structure in the display region.

9. The display panel according to claim 1, characterized in that: The display panel also includes a first insulating layer, which is located between the source and drain metal layer and the gate layer. The source and drain metal layers in the binding area are connected to the gate layer through vias in the first insulating layer, and the source and drain metal layers in the display area are connected to the gate layer through vias in the first insulating layer.

10. The display panel according to claim 4, characterized in that: The display panel further includes a second insulating layer, wherein the second insulating layer is located between the light-shielding metal layer and the gate layer, and the light-shielding metal layer is connected to the gate layer through a via hole in the second insulating layer.

11. A display device, characterized in that: The display device comprises the display panel according to any one of claims 1 to 10.

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