Display device

Abstract

The invention provides a display device, and relates to the technical field of display, the display device comprises a substrate, an OLED display layer formed on the substrate, and a frame surrounding the OLED display layer; a scanning driving circuit of the OLED display layer is electrically connected with the OLED display layer through a control wire, the scanning driving circuit is arranged in the frame or stacked with the OLED display layer in the first direction, and the first direction is the same as the light emitting direction of the display device. According to the technical scheme provided by the invention, the black edge of the OLED display device can be reduced, so that the screen-to-body ratio is improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display device. Background Art

[0002] With the continuous progress of display technologies, Organic Light-Emitting Diode (OLED) display devices have been widely used in various fields.

[0003] In an OLED display device, the driving circuit is usually disposed on the left and right sides of the display area. However, since the driving circuit itself requires a certain amount of physical space, this setting method will cause black borders to appear at the edges of the display device, making it difficult for OLEDs to achieve narrow borders. Summary of the Invention

[0004] In view of this, this application provides a display device for reducing the black borders of OLEDs.

[0005] To achieve the above object, the display device provided in the embodiments of this application includes: a substrate, an OLED display layer formed on the substrate, and a border surrounding the OLED display layer; The scan driving circuit of the OLED display layer is electrically connected to the OLED display layer through a control trace. The scan driving circuit is disposed in the border or stacked with the OLED display layer along a first direction, and the first direction is the same as the light-emitting direction of the display device.

[0006] In a possible implementation manner of the first aspect, the OLED display layer includes a display area and a control area disposed around the display area. The scan driving circuit is located in the control area; a first groove is formed on the inner sidewall of the border, and the control area is located in the first groove. Through the above implementation manner, the scan driving circuit in the control area can be hidden by using the first groove, thereby reducing the width of the black border.

[0007] In a possible implementation manner of the first aspect, the substrate is a flexible substrate. The inner bottom wall of the border is recessed to form a second groove communicating with one side of the first groove. The outer end of the substrate bends away from the OLED display layer, and the outer end of the substrate is embedded in the second groove. By bending the outer end of the substrate and embedding it in the second groove, the width of the black border can be further reduced.

[0008] In a possible implementation manner of the first aspect, the display device further includes a glass cover plate, the glass cover plate is attached to the light-emitting surface of the OLED display layer, the light-emitting surface of the glass cover plate and the upper end surface of the frame are in the same plane, and the side wall of the glass cover plate is connected to the inner side wall of the frame. Through the above implementation manner, dust accumulation at the junction of the display area and the frame can be reduced, and abrasion of the OLED display layer caused by user operation can be avoided, thereby improving the use reliability of the display device.

[0009] In a possible implementation manner of the first aspect, the substrate includes a rigid substrate and a flexible substrate, the display area is formed on the rigid substrate, the control area is formed on the flexible substrate, and the outer end of the flexible substrate bends away from the OLED display layer. By forming the control area on the flexible substrate, it is convenient to bend the control area to reduce the width of the black border.

[0010] In a possible implementation manner of the first aspect, a part of the flexible substrate and the rigid substrate are stacked along a first direction, and the rigid substrate and the flexible substrate are bonded by PI glue. By bonding the rigid substrate and the flexible substrate with PI glue, the stability of the substrate can be improved, and the adhesion between the upper and lower substrates can be enhanced.

[0011] In a possible implementation manner of the first aspect, in the stacked area of the flexible substrate and the rigid substrate, the rigid substrate is etched with a first via along the first direction, the control trace is formed on the flexible substrate, and passes through the first via to be electrically connected to the pixel driving circuit in the display area. Through the above implementation manner, while reducing the width of the black border, the situation of the control trace breaking due to different lattice constants between the rigid substrate and the flexible substrate can also be reduced.

[0012] In a possible implementation manner of the first aspect, the substrate includes a first rigid substrate and a second rigid substrate located on the first rigid substrate, the scan driving circuit is arranged on the first rigid substrate, the OLED display layer is formed on the second rigid substrate, the second rigid substrate is etched with a second via along the first direction, and the control trace of the scan driving circuit passes through the second via to be connected to the pixel driving circuit of the OLED display layer. By hiding the scan driving circuit through the OLED display layer, borderless display of the display device can be achieved, thereby improving the screen-to-body ratio of the display device.

[0013] In a possible implementation of the first aspect, the end of the control trace passes through the second via and protrudes outward to form a convex shape, and a concave shape matching the convex shape is formed at the wiring position of the pixel driving circuit of the OLED display layer. By forming a convex shape at the end of the control trace and a concave shape matching the convex shape at the wiring position, the connection reliability of the wiring position between the control trace and the pixel driving circuit can be improved.

[0014] In a possible implementation of the first aspect, the material of the flexible substrate includes one or more of polyimide, polyethylene, and polyethylene terephthalate.

[0015] The display device provided by the embodiments of the present application includes a substrate substrate, an OLED display layer formed on the substrate substrate, and a border surrounding the OLED display layer; the scan driving circuit of the OLED display layer is electrically connected to the OLED display layer through a control trace, the scan driving circuit is disposed in the border or stacked with the OLED display layer along a first direction, and the first direction is the same as the light emitting direction of the display device. The technical solution provided by the present application can reduce the black border of the OLED display device, thereby improving the screen-to-body ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view schematic diagram of the effective display area and the black border of the display panel in the prior art; Figure 2 It is a circuit structure schematic diagram of the pixel driving circuit; Figure 3 It is a structure schematic diagram of the first display device provided by the embodiments of the present application; Figure 4 It is a side view of the control trace of the first display device provided by the embodiments of the present application; Figure 5 It is a top view of the control trace of the first display device provided by the embodiments of the present application; Figure 6 It is a structure schematic diagram of the second display device provided by the embodiments of the present application; Figure 7 It is a structure schematic diagram of the third display device provided by the embodiments of the present application; Figure 8 It is a position schematic diagram of the rigid substrate and the flexible substrate provided by the embodiments of the present application; Figure 9 It is a structure schematic diagram of the fourth display device provided by the embodiments of the present application; Figure 10 It is another structure schematic diagram of the fourth display device provided by the embodiments of the present application; Figure 11 Side view of the control trace of the fourth display device provided by the embodiment of the present application; Figure 12 Top view of the control trace of the fourth display device provided by the embodiment of the present application.

[0017] Explanation of reference numerals: 1 - OLED display layer; 11 - sub - pixel; 2 - scan driving circuit; 21 - control trace; 3 - border; 31 - first groove; 32 - second groove; 41 - flexible substrate; 42 - rigid substrate; 421 - first rigid substrate; 422 - second rigid substrate; 5 - glass cover plate; 6 - first via; 7 - second via. Detailed implementation manners

[0018] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The terms used in the implementation manner part of the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. These several specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0019] The display device of the embodiment of the present application can be any device with a display function, such as: tablet computer, mobile phone, e - reader, personal computer, notebook computer, in - vehicle display, Internet TV, and wearable device, etc.

[0020] Figure 1 It is a top - view schematic diagram of the effective display area and the black border of the display panel in the prior art. As Figure 1 shown, taking a mobile phone as an example, the display panel may include an effective display area A1. Multiple sub - pixels may be formed in the effective display area A1. The sub - pixels may include blue sub - pixels B, red sub - pixels R, or green sub - pixels G, etc. For a display device, whether it is a liquid - crystal display panel or an OLED display panel, its control traces need to be arranged outside the effective display area A1. Therefore, black borders A2 will exist around the display panel.

[0021] The liquid - crystal display panel is a passive light - emitting device. The brightness of each sub - pixel depends on the backlight module and the liquid - crystal deflection in the liquid - crystal layer, and the backlight source of the backlight module can cover the edge of the liquid - crystal display panel, which makes the border design of the liquid - crystal display panel more flexible and helps to reduce the width of the black border A2.

[0022] In an OLED display panel, the brightness of each sub-pixel needs to be controlled by a pixel driving circuit. Specifically, in an OLED display panel, each sub-pixel may include a pixel driving circuit and a corresponding organic light-emitting diode. The organic light-emitting diode may be disposed above the pixel driving circuit and connected to the pixel driving circuit. The pixel driving circuit can drive the organic light-emitting diode to emit light.

[0023] The structure of the pixel driving circuit can include various types. For example, 3T1C pixel driving circuit, 6T1C pixel driving circuit, and 7T1C pixel driving circuit, etc. Among them, "T" represents the transistor in the pixel driving circuit, the number in front of "T" represents the number of transistors in the pixel driving circuit, "C" represents the storage capacitor in the pixel driving circuit, and the number in front of "C" represents the number of storage capacitors in the pixel driving circuit.

[0024] Taking the 7T1C pixel driving circuit structure as an example, refer to Figure 2 , the pixel driving circuit may include a first transistor T1 that controls whether the organic light-emitting diode (OLED in the figure) emits light, a second transistor T2 that controls the magnitude of the current flowing through the organic light-emitting diode, a third transistor T3 that controls the potential on the storage capacitor C during initialization, a fourth transistor T4 that compensates for the threshold voltage of the second transistor T2, a fifth transistor T5 that controls the high voltage ELVDD to supply power to the organic light-emitting diode, a sixth transistor T6 that controls the data voltage Vdata to charge the storage capacitor C, and a seventh transistor T7 that initializes the anode of the organic light-emitting diode. Vint can represent the initialization voltage, and ELVSS can be the low voltage that provides the current path for the organic light-emitting diode. Each transistor can be turned on at a low level and turned off at a high level.

[0025] In the reset stage, the first scan signal Scan(n - 1) can be at a low level, the second scan signal Scan(n) and the emission control signal EM(n) can be at a high level. The second transistor T2 and the third transistor T3 are in the conducting state, and other transistors are in the off state. Vint can reset the storage capacitor C to clear the possible signal residue in the previous stage.

[0026] In the data charging stage, the second scan signal Scan(n) is at a low level, the first scan signal Scan(n - 1) and the emission control signal EM(n) are at a high level. The second transistor T2, the fourth transistor T4, the sixth transistor T6, and the seventh transistor T7 are in the conducting state, and other transistors are in the off state. The data voltage Vdata can charge the storage capacitor C, and Vint can initialize the anode of the organic light-emitting diode. In the data charging stage, the magnitude of the data voltage Vdata can control the emission brightness of the organic light-emitting diode.

[0027] During the light-emitting stage, the light-emitting control signal EM(n) can be at a low level, the first scan signal Scan(n - 1) and the second scan signal Scan(n) can be at a high level, the first transistor T1, the second transistor T2, and the fifth transistor T5 are in an on state, and other transistors are in an off state. The high voltage ELVDD can supply current to the organic light-emitting diode, and the organic light-emitting diode emits light.

[0028] As can be seen from the above, each sub-pixel of the OLED display panel can emit light independently, and the pixel driving circuit corresponding to each sub-pixel requires the scan driving circuit to provide the first scan signal Scan(n - 1) and the second scan signal Scan(n). In the related art, the scan driving circuit is usually on the opposite sides of the OLED display panel. Therefore, compared with the liquid crystal display panel, the black border A2 of the OLED display panel will be wider.

[0029] Moreover, in the packaging process of the display panel, the liquid crystal layer in the liquid crystal display panel is less sensitive to the environment, and the packaging requirements are relatively loose, so the width of the black border A2 can be relatively narrow. However, the organic materials in the organic light-emitting diode are extremely sensitive to oxygen and moisture, which requires precise packaging of the display panel. Specifically, for a rigid OLED display panel, usually, the hard screen packaging ring (the width can be less than or equal to the width of the border glue in the liquid crystal display panel) needs to be sealed by a laser melting packaging process, and the operation area of the laser melting cannot overlap with the area where the scan driving circuit is located. This means that a certain space needs to be reserved additionally outside the effective display area A1 to seal the hard screen packaging ring, which will further increase the width of the black border A2. For a flexible OLED display panel, the edge of the display panel has a bank structure, and the risk of breakage of the metal layer in the organic light-emitting diode is higher closer to the edge of the display panel. To improve the reliability of the OLED display panel, a very wide black border A2 also needs to be set to strengthen edge protection and prevent peeling or cracking.

[0030] In view of this, an embodiment of the present application provides a display device, which may include a substrate, an OLED display layer formed on the substrate, and a border surrounding the OLED display layer. The scan driving circuit of the OLED display layer can be electrically connected to the OLED display layer through a control trace. The scan driving circuit is disposed in the border or stacked with the OLED display layer along a first direction, where the first direction can be the same as the light-emitting direction of the display device. In this way, the width of the black border can be reduced, thereby improving the screen-to-body ratio of the display device and further improving the user experience and product evaluation.

[0031] It should be noted that in the embodiments of the present application, "above" and "below" are based on the orientation or positional relationship indicated in the drawings. The control traces may include, but are not limited to, gate scan lines, data lines, common electrode lines, and power supply lines. Different control traces may be the same type of line. For example, they may all be gate lines, or they may be different lines. For example, a part of multiple control traces may be gate lines, and another part may be data lines. In an actual product, the control traces may also include multiple segments of traces, and the multiple segments of traces may be electrically connected at the wiring position. The embodiments of the present application do not impose any special restrictions on the type of control traces.

[0032] Figure 3 FIG. 4 is a schematic structural diagram of a first display device provided by an embodiment of the present application. As Figure 3 shown, the OLED display layer 1 may include a display area AA and a control area CA disposed around the display area AA. The scan driving circuit 2 may be located in the control area CA. A first groove 31 may be formed on the inner sidewall of the border 3, and the control area CA may be located in the first groove 31. Exemplarily, the substrate may be a flexible substrate 41, and the scan driving circuit 2 may be disposed on the flexible substrate 41, so that the flexible substrate 41 can be bent, and the outer end of the flexible substrate 41 can be embedded in the first groove 31. The material of the flexible substrate 41 may include one or more of polyimide, polyethylene, platinum metal sheet, and polyethylene terephthalate. By disposing the control area CA in the first groove 31, the border 3 can be used to shield the scan driving circuit 2 and the control area CA. On the one hand, this can ensure that there is sufficient bending transition in the metal layer of the organic light-emitting diode while reducing the width of the black border. On the other hand, this can reduce the influence of the bank structure on the black border.

[0033] Figure 4 FIG. 10 is a side view of the control traces of the first display device provided by an embodiment of the present application. Figure 5 FIG. 12 is a top view of the control traces of the first display device provided by an embodiment of the present application. Referring to Figure 4 and Figure 5 , the control traces 21 may be formed on the flexible substrate 41, and the scan driving circuit 2 may transmit driving signals to the pixel driving circuits in the display area AA through the control traces 21. By disposing the control traces 21 on the bent flexible substrate 41, the width of the black border can be effectively reduced.

[0034] In an actual product, only the outer end of one side of the flexible substrate 41 may be bent and embedded in the first groove 31, or both sides may be bent, which can be specifically selected according to the actual situation. The embodiments of the present application do not impose any special restrictions on this. Electronic components, such as a battery, may be disposed below the flexible substrate 41, which can not only provide support for the flexible substrate 41 but also improve the space utilization rate of the display device.

[0035] It can be understood that the control area CA can be mainly used to set the scan driving circuit 2. In some embodiments, the control area CA can also set the pixel driving circuit, the organic light-emitting diode, etc. A protective layer such as a planarization layer can also be formed above the scan driving circuit 2, so as to protect the scan driving circuit 2.

[0036] Figure 6 The following is a schematic structural diagram of the second display device provided by the embodiment of the present application. Refer to Figure 6 , in some embodiments, the inner bottom wall of the frame 3 can be recessed to form a second groove 32 communicating with one side of the first groove 31. The outer ends of the substrate and the control area CA can be bent away from the OLED display layer 1, so that the outer ends of the substrate can be embedded in the second groove 32. The arrangement of the control traces can refer to the above embodiments, and the present application will not elaborate here. By forming the communicating second groove 32 on the inner side wall and the inner bottom wall of the frame 3, on the one hand, the thickness of the display device can be reduced, and on the other hand, the bending space of the flexible substrate 41 can be increased, thereby further reducing the black edge and the width of the frame 3.

[0037] Furthermore, due to the limitation of the bending angle of the flexible substrate 41, it cannot be directly bent by 90°. Therefore, when the control area CA is bent, there will be a gap between the display area AA and the frame 3. After the assembly of the OLED display layer 1 and the frame 3 is completed, a glass cover plate 5 can be provided on the OLED display layer 1. The glass cover plate 5 can be attached to the light-emitting surface of the OLED display layer 1. The light-emitting surface of the glass cover plate 5 can be in the same plane as the upper end surface of the frame 3 to flatten the display surface, thereby improving the aesthetics and the convenience of user operation. The side wall of the glass cover plate 5 can be connected to the inner side wall of the frame 3, which can reduce the dust accumulation at the gap position.

[0038] In some embodiments, an adhesive can also be provided between the side wall of the glass cover plate 5 and the inner side wall of the frame 3 to improve the stability of the glass cover plate 5 and improve the sealing and cleanliness of the display device. Similarly, the side of the glass cover plate 5 facing the OLED display layer 1 can also be bonded to the OLED display layer 1. By covering the hard glass cover plate 5 on the light-emitting surface of the OLED display layer 1, the OLED display layer 1 can also be protected, avoiding the wear of the OLED display layer 1 caused by user operation, thereby improving the use reliability of the display device.

[0039] Considering the reason of process error, if there is air between the glass cover plate 5 and the OLED display layer 1 and they cannot be perfectly attached, due to the different refractive indexes of air and the glass cover plate 5, when the picture is displayed, the light generated by the organic light-emitting diode will be refracted after passing through the air and the glass cover plate 5, resulting in double images in the display picture and affecting the display quality.

[0040] Figure 7 This is a schematic structural diagram of the third display device provided by the embodiments of the present application. In an optional implementation manner, as Figure 7 shown, the substrate may include a flexible substrate 41 and a rigid substrate 42. The OLED display layer 1 in the display area AA may be formed on the rigid substrate 42, and the scan driving circuit 2 in the control area CA may be formed on the flexible substrate 41. The flexible substrate 41 may be located on the left and right sides of the rigid substrate 42. Refer to Figure 8 . The outer end of the flexible substrate 41 in the control area CA may be bent away from the OLED display layer 1. The thicknesses of the flexible substrate 41 and the rigid substrate 42 may be the same, so as to facilitate splicing the flexible substrate 41 and the rigid substrate 42. Through the above implementation manner, the fitting problem of the glass cover plate 5 can be solved.

[0041] In addition, by forming the display area AA on the rigid substrate 42, the cost can be reduced and the rigidity of the display area AA can be improved. Forming the control area CA on the flexible substrate 41 can facilitate bending the control area CA to reduce the width of the black border.

[0042] In some embodiments, a part of the flexible substrate 41 may also be disposed below the rigid substrate 42 and stacked with the rigid substrate 42, which can improve the reliability when the control area CA is bent. The thickness of the flexible substrate 41 in the stacked area may be less than that in the non-stacked area, so as to reduce the thickness of the substrate of the display area AA, and further reduce the thickness of the display device.

[0043] Continue to refer to Figure 7 , in the rigid substrate 42 in the stacked area, a first via 6 may be etched along a first direction. The number of the first vias 6 may be multiple. Control traces (not shown) may be formed between the flexible substrate 41 and the rigid substrate 42 and pass through the first vias 6 of the rigid substrate 42 to be electrically connected to the pixel driving circuit in the display area AA. Through the above implementation manner, on the one hand, while reducing the width of the black border, the situation of double images appearing in the display picture can be reduced, and the display quality can be improved. On the other hand, the situation of the control traces breaking due to different lattice constants between the flexible substrate 41 and the rigid substrate 42 can also be reduced, and the reliability of the display device can be improved.

[0044] To improve the bonding degree between the flexible substrate 41 and the rigid substrate 42, the flexible substrate 41 and the rigid substrate 42 may be bonded by laser sealing. For example, a polyimide (PI) adhesive with strong adhesion, good high-temperature resistance and high chemical stability may be selected for bonding, so as to improve the stability and reliability of the display device.

[0045] In an alternative implementation, Figure 9 is a schematic structural diagram of a fourth display device provided by an embodiment of the present application. As Figure 9 shown, the substrate substrate may include a first rigid substrate 421 and a second rigid substrate 422 located on the first rigid substrate 421. The scan driving circuit 2 may be disposed on the first rigid substrate 421, and the OLED display layer 1 may be formed on the second rigid substrate 422. The width of the first rigid substrate 421 may be smaller than that of the second rigid substrate 422, and they are respectively disposed on both sides below the second rigid substrate 422. The first rigid substrate 421 and the second rigid substrate 422 may be sealed by PI glue.

[0046] By disposing the scan driving circuit 2 below the OLED display layer 1, the scan driving circuit 2 can be shielded by the OLED display layer 1. Therefore, there is no need to consider adding an additional black border to isolate the sealed hard screen encapsulation ring and the scan driving circuit, so that the black border width of the OLED display device can be equal to or even smaller than that of the liquid crystal display device. Compared with the flexible substrate 41, hard substrates are used in the embodiments of the present application, which can not only reduce the manufacturing cost and the difficulty of the manufacturing process, but also improve the bonding degree between the substrates and the product yield. The outer sidewall of the second rigid substrate 422 may be connected to the frame 3, which can also facilitate the fixation of the second rigid substrate 422.

[0047] In some embodiments, second vias 7 may be etched in the second rigid substrate 422 along a first direction. The number of the second vias 7 may be multiple, and the routing direction of the control traces of the scan driving circuit 2 may be set along the first direction, so that the control traces can pass through the second vias 7 and be connected to the pixel driving circuit of the OLED display layer 1 to drive the sub-pixels 11 to emit light. By changing the routing manner of the control traces, the control traces can also be hidden, which helps the display device to achieve a borderless design and thus improve the screen-to-body ratio of the display device.

[0048] In some embodiments, referring to Figure 10 , the scan driving circuit 2 may also be disposed on the side surface of the first rigid substrate 421 away from the frame 3, and second vias 7 may be opened in the corresponding area of the second rigid substrate 422 above the scan driving circuit 2, so that the control traces of the scan driving circuit 2 can pass through the second rigid substrate 422 and be connected to the pixel driving circuit of the OLED display layer 1. Through the above implementation, the thickness of the display device can be reduced.

[0049] In some embodiments, referring to Figure 11 and Figure 12, the end of the control trace 21 can protrude outward to form a convex shape after passing through the second via hole 7, and a concave shape matching the convex shape can be formed at the wiring position of the pixel driving circuit of the OLED display layer 1, thereby improving the connection reliability of the wiring position between the control trace 21 and the pixel driving circuit.

[0050] It can be understood that since the routing method of the control trace 21 changes, the impedance of the control trace 21 also changes. In some embodiments, before the scan driving circuit outputs a driving signal to the pixel driving circuit, the impedance can be calculated and simulated first, and the driving signal can be compensated according to the change amount of the impedance, so that the pixel driving circuit can be normally driven.

[0051] The display device provided by the embodiment of the present application includes a substrate, an OLED display layer formed on the substrate, and a border surrounding the OLED display layer; the scan driving circuit of the OLED display layer is electrically connected to the OLED display layer through a control trace, and the scan driving circuit is disposed in the border or stacked with the OLED display layer along a first direction, and the first direction is the same as the light-emitting direction of the display device. The technical solution provided by the present application can reduce the black border of the OLED display device, thereby improving the screen-to-body ratio.

[0052] It should be understood that in the description of the specification and the appended claims of the present application, the terms "comprise", "include", "have" and any variation thereof are intended to cover non-exclusive inclusion, which all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0053] In the description of the present application, unless otherwise specified, " / " means that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B; "and / or" in the present application is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Among them, A and B can be singular or plural.

[0054] Moreover, in the description of the present application, unless otherwise specified, "a plurality of" means two or more than two. "At least one of the following" or its similar expression refers to any combination of these items, including any combination of single items or plural items.

[0055] In addition, in the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present application.

[0056] In the present application, unless otherwise clearly specified and limited, the terms "connected", "coupled", etc. should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0057] Furthermore, in the description of the specification and the appended claims of the present application, the terms "first", "second", etc. are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described here can be implemented in an order other than that shown or described here; the features defined with "first", "second" can explicitly or implicitly include at least one of such features.

[0058] In the embodiments of the present application, words such as "exemplarily" or "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "exemplarily" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplarily" or "for example" is intended to present relevant concepts in a specific manner.

[0059] The reference to "one embodiment" or "some embodiments" etc. described in the specification of the present application means that in one or more embodiments of the present application, specific features, structures or characteristics described in connection with that embodiment are included. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments" etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in another way.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that, Including: a substrate, an OLED display layer formed on the substrate, and a border surrounding the OLED display layer; the scan driving circuit of the OLED display layer is electrically connected to the OLED display layer through a control trace, the scan driving circuit is disposed in the border or stacked with the OLED display layer along a first direction, and the first direction is the same as the light emitting direction of the display device.

2. The display device according to claim 1, characterized in that, The OLED display layer includes a display area and a control area disposed around the display area, and the scan driving circuit is located in the control area; a first groove is formed on the inner sidewall of the border, and the control area is located in the first groove.

3. The display device according to claim 2, wherein The substrate is a flexible substrate, and the inner bottom wall of the border is recessed to form a second groove communicating with one side of the first groove. The outer end of the substrate bends away from the OLED display layer, and the outer end of the substrate is embedded in the second groove.

4. The display device according to claim 3, characterized in that The display device further includes a glass cover plate, the glass cover plate is attached to the light emitting surface of the OLED display layer, the light emitting surface of the glass cover plate and the upper end surface of the border are in the same plane, and the side wall of the glass cover plate is connected to the inner sidewall of the border.

5. The display device according to claim 2, characterized in that, The substrate includes a rigid substrate and a flexible substrate, the display area is formed on the rigid substrate, the control area is formed on the flexible substrate, and the outer end of the flexible substrate bends away from the OLED display layer.

6. The display device according to claim 5, wherein Part of the flexible substrate and the rigid substrate are stacked along the first direction, and the rigid substrate and the flexible substrate are bonded by PI glue.

7. The display device according to claim 6, characterized in that, In the stacked area of the flexible substrate and the rigid substrate, the rigid substrate is etched with a first via along the first direction, the control trace is formed on the flexible substrate and passes through the first via to be electrically connected to the pixel driving circuit of the display area.

8. The display device according to claim 1, wherein The substrate includes a first rigid substrate and a second rigid substrate on the first rigid substrate, the scan driving circuit is disposed on the first rigid substrate, the OLED display layer is formed on the second rigid substrate, the second rigid substrate is etched with a second via along the first direction, and the control trace of the scan driving circuit passes through the second via to be connected to the pixel driving circuit of the OLED display layer.

9. The display device according to claim 8, characterized in that, The end of the control trace protrudes outward in a convex shape after passing through the second via, and a concave shape matching the convex shape is formed at the wiring position of the pixel driving circuit of the OLED display layer.

10. The display device according to any one of claims 3-6, characterized in that, The material of the flexible substrate includes one or more of polyimide, polyethylene, and polyethylene terephthalate.

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