Display panel and display device

Abstract

The application provides a display panel and a display device. The display panel has a first display area and a second display area. The display panel comprises a first pixel unit, a first connecting contact and a wiring substrate. The first pixel unit comprises a plurality of first sub-pixels and is arranged in the first display area. The first sub-pixels are electrically connected to the first connecting contact through a first driving line. The wiring substrate is arranged on the side of the display panel away from the display surface of the display panel. The wiring substrate comprises a first driving circuit and a second connecting contact electrically connected to the first driving circuit. The second connecting contact is electrically connected to the first connecting contact, and the first driving circuit is used for driving the first sub-pixels. The application can effectively improve the integrated display effect of the first display area and the second display area.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel and a display device. BACKGROUND

[0002] In the field of electronic device terminals with display devices, display panels currently pursue as large a screen ratio as possible to enhance user experience. For smartphones with the concept of full screen, various optical sensing elements such as front-facing cameras, face recognition, and fingerprint recognition are expected to be integrated into the screen to achieve the effect of "full screen" in which the screen occupies the entire front panel of the smartphone.

[0003] One method in the prior art is to set a transparent display area in the display screen area corresponding to the optical sensing element, and set the optical sensing element under the transparent display area, so as to integrate the optical sensing element such as the front-facing camera into the display area of the screen under the premise that the appearance of the screen is complete and the display picture is not incomplete, thereby improving the screen ratio and achieving a true full screen. However, the display effect of the transparent display area and the normal display area in the above full screen solution of the prior art often has a large difference, resulting in poor display uniformity of the entire display screen. SUMMARY

[0004] In view of the above technical problems, the present application provides a display panel and a display device.

[0005] The display panel provided by the present application has a first display area and a second display area. The display panel comprises a first pixel unit, a first connection contact, and a wiring substrate. The first pixel unit comprises a plurality of first sub-pixels and is arranged in the first display area. The first sub-pixels are electrically connected to the first connection contact through a first driving line. The wiring substrate is arranged on the side of the display panel away from the display surface thereof, and the wiring substrate comprises a first driving circuit and a second connection contact electrically connected to the first driving circuit. The second connection contact is electrically connected to the first connection contact, and the first driving circuit is used to drive the first sub-pixels.

[0006] Preferably, the light transmittance of the first display area is higher than that of the second display area, the first connection contact is arranged outside the first display area, the first connection contact is arranged in the second display area, the projection of the wiring substrate on the display surface does not overlap the first display area, the display panel further comprises a second pixel unit, the second pixel unit is arranged in the second display area, and the pixel arrangement of the second pixel unit is the same as that of the first pixel unit.

[0007] Further, the display panel further comprises a second driving circuit, the second pixel unit comprises a plurality of second sub-pixels, the second driving circuit is used to drive the second sub-pixels, and the driving mode of the second driving circuit is the same as that of the first driving circuit.

[0008] Preferably, the second display area comprises an adjacent area and a third display area, the adjacent area is adjacent to the first display area and is located between the first display area and the third display area, and the first connecting contact is arranged in the adjacent area.

[0009] Further, the projection of the wiring substrate on the display panel is located in the adjacent area.

[0010] Preferably, the second connecting contact and the first connecting contact are electrically connected by means of pad crimping.

[0011] Preferably, the second connecting contact and the first connecting contact are electrically connected by means of flexible wires.

[0012] Preferably, the light-emitting layer material of the first sub-pixel is transparent light-emitting material.

[0013] Preferably, the first driving line is transparent wire.

[0014] The application also provides a display device comprising the display panel as described above.

[0015] Compared with the prior art, the display panel and the display device of the application place the driving circuit of the sub-pixel in the first display area on the extra wiring substrate, which can avoid the problem of low pixel density of the first display area caused by the limited space for placing the driving circuit, thereby effectively improving the integrated display effect of the first display area and the second display area. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 FIG. 1 is a schematic diagram of a display panel according to an embodiment of the application.

[0018] Figure 2 FIG. 2 is a schematic diagram of the connection mode of a wiring substrate according to an embodiment of the application.

[0019] Figure 3 FIG. 3 is a schematic diagram of the connection mode of a wiring substrate according to another embodiment of the application.

[0020] Figure 4 FIG. 4 is a schematic diagram of a pixel circuit according to an embodiment of the application.

[0021] Figure 5 FIG. 5 is a schematic diagram of the cross-sectional structure of a display panel according to an embodiment of the application.

[0022] Figure 6 A cross-sectional structure diagram of another part of a display panel according to an embodiment of the present application.

[0023] Figure 7 A schematic diagram of a display device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to further understand the object, structure, features and functions of the present application, the embodiments are described in detail as follows.

[0025] It should be noted that although the terms “first”, “second”, “third” and the like can be used herein to describe various components, these components should not be limited by these terms; these terms are only used to distinguish one component from another component.

[0026] It should be noted that when a layer, region or component is described as “formed on” another layer, another region or another component, the layer, region or component can be directly or indirectly formed on the other layer, the other region or the other component, for example, there can be an intermediate layer, region or component; when a layer, region or component is described as being electrically “connected to” or “joined to” another layer, another region or another component, the layer, region or component can be “directly electrically connected or directly electrically joined” to the other layer, the other region or the other component, or “indirectly electrically connected or indirectly electrically joined” to the other layer, the other region or the other component such that an intermediate layer, an intermediate region or an intermediate component is interposed therebetween.

[0027] For ease of explanation, the size of elements in the drawings can be exaggerated; since the size and thickness of components in the drawings are arbitrarily shown for ease of explanation, the following embodiments are not limited thereto.

[0028] In the display screen of an electronic terminal (such as a mobile phone OLED screen), by designing a notch area or other area as a transparent display sub-screen area, and placing a camera under the sub-screen area, a truly full-screen display effect can be achieved, and the screen ratio can be improved. Because the pixel driving circuit of the sub-screen area cannot be placed under the sub-screen area, otherwise the light transmittance will be affected, the position for placing the pixel driving circuit of the sub-screen area is very limited. In order to pursue high light transmittance of the sub-screen area, the pixel density (PPI) of the sub-screen area is reduced compared with that of the main screen area, and the pixel structure and driving mode of the sub-screen area are different from those of the main screen area, so there is a problem that the display effect between the sub-screen area and the main screen area is greatly different. Moreover, the sub-screen area also has problems of poor display effect, serious mura (non-uniformity of brightness), color cast, and display split between the two areas.

[0029] The display panel provided by the application has a first display area and a second display area. The display panel comprises a first pixel unit, a first connecting contact and a wiring substrate. The first pixel unit comprises a plurality of first sub-pixels arranged in the first display area. The first sub-pixels are electrically connected to the first connecting contact through a first driving line. The wiring substrate is arranged on the side of the display panel away from the display surface of the display panel. The projection of the wiring substrate on the display surface does not overlap with the first display area. The wiring substrate comprises a first driving circuit and a second connecting contact electrically connected to the first driving circuit. The second connecting contact is electrically connected to the first connecting contact. The first driving circuit is used to drive the first sub-pixels.

[0030] The first driving circuit used to drive the pixels of the first display area (such as the transparent display sub-screen area) is arranged on the wiring substrate, so that the problem of excessively low pixel density of the first display area caused by the limited space for arranging the first driving circuit can be solved. Moreover, due to the improved design space of the first driving circuit, the pixel structure and driving mode of the pixels of the first display area can be the same as those of the pixels of the second display area, so that the screen mesh feeling caused by the low PPI of the first display area can be improved, and the driving difference between the second display area and the first display area can be greatly eliminated, and the integrated display effect of the entire display area of the display panel can be improved.

[0031] Please refer to Figure 1 and Figure 5 , Figure 1 the schematic diagram of the display panel of an embodiment of the application, Figure 5 the schematic diagram of the partial cross-sectional structure of the display panel of an embodiment of the application. The display panel 100 has a first display area 10 and a second display area 20. Optionally, the first display area 10 is a transparent display area. When the display panel 100 is applied to a display screen with a full-screen effect, a camera can be arranged below the first display area 10, and the camera can take pictures through the transparent display area. Alternatively, the first display area 10 and the second display area 20 can be displayed together.

[0032] The display panel 100 comprises a first pixel unit 1, a first connecting contact 2 and a wiring substrate 3. The first pixel unit 1 comprises a plurality of first sub-pixels 101 arranged in the first display area 10. In actual application, the first display area 10 needs to ensure the transmittance of internal and external light. The density of the sub-pixels 101 (such as red / green / blue pixel points) in the first pixel unit 1 can be designed according to the required transmittance of the product specification, and the application is not limited in this regard.

[0033] The first sub-pixels 101 are electrically connected to the first connecting contact 2 through a first driving line 4. The first connecting contact 2 is used to connect the driving circuit for driving the first sub-pixels 101 in the first display area 10. In order to avoid affecting the light transmittance of the first display area 10, the first connecting contact 2 is arranged in other areas outside the first display area 10.

[0034] The wiring substrate 3 is arranged on the side of the display panel 100 away from the display surface, and includes the first driving circuit 31 and the second connection contact 32 electrically connected to the first driving circuit 31. The second connection contact 32 is electrically connected to the first connection contact 2, and the first driving circuit 31 is used to drive the first sub-pixel 101.

[0035] In order to avoid affecting the light transmittance of the first display area 10, the wiring substrate 3 including the first driving circuit 31 is arranged at a position that does not block the first display area 10. The driving signal of the first driving circuit 31 is transmitted to the first sub-pixel 101 through the second connection contact 32 electrically connected to the first connection contact 2 and the first driving line 4.

[0036] The first display area 10 of the display panel 100 can adopt an AMOLED (active matrix organic light-emitting diode) display panel driving mode. Please refer to Figure 4 , Figure 4 The pixel circuit of an embodiment of the present application is shown in the schematic diagram. The pixel circuit includes a driving circuit 35 and a light-emitting unit 33. The driving circuit 35 uses two transistors and a storage capacitor to drive the light-emitting unit 33 to emit light. The pixel circuit includes a switching transistor M0, a driving transistor M1, and a storage capacitor C1. The gate of the switching transistor M0 is connected to a scan line to receive a scan signal Scan, the source is connected to a data line to receive a data signal Vdata, and the drain is connected to the gate of the driving transistor M1. The source of the driving transistor M1 is connected to a first voltage terminal to receive a first voltage VDD (such as a high voltage), and the drain is connected to the anode terminal of the light-emitting unit 33; one end of the storage capacitor C1 is connected to the drain of the switching transistor M0 and the gate of the driving transistor M1, and the other end is connected to the source of the driving transistor M1 and the first voltage terminal; the cathode terminal of the light-emitting unit 33 is connected to a second voltage terminal to receive a second voltage VSS (such as a low voltage or a ground voltage). When the switching transistor M0 is turned on by applying a scan signal Scan through the scan line, the data signal Vdata sent by the data driving circuit through the data line will charge the storage capacitor C1 through the switching transistor M0, thereby storing the data signal Vdata in the storage capacitor C1, and the stored data signal Vdata controls the conduction degree of the driving transistor M1, thereby controlling the current flowing through the driving transistor to drive the light-emitting unit 33 to emit light, and the current can determine the gray scale of the pixel light emission.

[0037] Please continue to refer to Figure 1 , Figure 4 and Figure 5Based on the above working principle, the light-emitting unit 33 can correspond to the first sub-pixel 101, the contact point A adjacent to the anode of the light-emitting unit 33 can correspond to the first connecting contact point 2, and the connection line 34 from the anode of the light-emitting unit 33 to the contact point A can correspond to the first driving line 4. The driving circuit 35 can correspond to the first driving circuit on the wiring substrate 3, and the contact point B of the driving circuit 35 connected to the side of the light-emitting unit 33 can correspond to the second connecting contact point 32.

[0038] It should be noted that the first driving circuit 31 of the present invention is not based on Figure 4 The 2T1C circuit shown is a limitation. The first driving circuit 31 mainly consists of transistors and capacitors, including but not limited to ground. The first driving circuit 31 of the present invention can be any one of a 1T circuit, a 2T1C circuit, a 3T1C circuit, a 6T1C circuit, a 6T2C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit, where T represents a transistor and C represents a capacitor. Taking "2T1C circuit" as an example, it refers to a pixel circuit that includes two thin-film transistors (T) and one capacitor (C). Other circuits can be deduced in the same way. The structure of the above driving circuit is known to those skilled in the art, and therefore will not be described in detail here.

[0039] Please continue reading Figure 5 , Figure 5 The diagram schematically illustrates a connection configuration where the first sub-pixel 101 is electrically connected to the first contact point 2 via the first driving line 4. The first sub-pixel 101 includes an anode layer 111, a light-emitting functional layer 112, and a cathode layer 113 disposed on the first substrate 110. The anode layer 111, the light-emitting functional layer 112, and the cathode layer 113 can be configured as follows: Figure 4 The light-emitting unit 33 shown is, for example, an organic light-emitting diode (OLED). The first sub-pixel 101 is disposed in the first display area 10. One end of the first driving line 4 is connected to the anode layer 111 of the first sub-pixel 101, and the other end of the first driving line 4 is connected to the first connecting contact point 2, which is disposed in the second display area 20.

[0040] Figure 5 The diagram also schematically illustrates a connection configuration where the first driving circuit 31 on the wiring substrate 3 is electrically connected to the first connecting contact 2 via the second connecting contact 32. The wiring substrate 3 includes a thin-film transistor layer 301 with the first driving circuit 31. The thin-film transistor layer 301 may include a gate conductive layer, a source / drain conductive layer, a semiconductor active layer, and corresponding insulating layers. In the first driving circuit 31, corresponding to... Figure 4The drain of the illustrated driving transistor M1 is electrically connected to the second connection contact 32 by means of a conductive track or a via, which is in turn electrically connected to the first connection contact 2, so that the driving signal of the first driving circuit 31 is transmitted via the second connection contact 32 and the first connection contact 2 and via the first driving line 4 to the first sub-pixel 101. In this way, the first driving circuit 31 can provide a driving current to the anode layer 111 of the first sub-pixel 101 by controlling the corresponding transistor, i.e. write a positive voltage to the anode of the first sub-pixel 101, and write a 0V or negative voltage to the cathode layer 113 of the first sub-pixel 101, i.e. write a 0V or negative voltage to the cathode of the first sub-pixel 101, which is equivalent to Figure 4 The driving signal flows between the anode and the cathode of the illustrated light-emitting unit 33, so as to control the first sub-pixel 101 to emit light.

[0041] In an embodiment, the light transmittance of the first display area 10 is higher than that of the second display area 20. The first connection contact 2 is arranged outside the first display area 10, and the first connection contact 2 is arranged inside the second display area 20. The projection of the track substrate 3 on the display surface does not overlap the first display area 10.

[0042] Please continue to see Figure 1 The display panel 100 further comprises a second pixel unit 5 arranged inside the second display area 20, and the second pixel unit 5 comprises a plurality of second sub-pixels 501, and the pixel arrangement of the second pixel unit 5 is the same as that of the first pixel unit 1. For example, the pixel arrangement includes the cathode, the anode, the OLED (Organic Light Emitting Diode) arrangement structure, and the size and shape of the sub-pixel, etc. In this way, the display effects such as brightness and color of the first display area 10 and the second display area 20 can be made as completely the same as possible, so as to improve the display uniformity of the display panel 100.

[0043] Optionally, the density of the plurality of second pixel units 5 in the second display area 20 is greater than or equal to the density of the plurality of first pixel units 1 in the first display area 10. The pixel density of the first pixel unit 1 can be equal to the pixel density of the second pixel unit 5. In this way, the display effects of the first display area 10 and the second display area 20 can be made closer, so as to further improve the display uniformity of the display panel 100.

[0044] In one embodiment, the display panel 100 further includes a second driving circuit for driving the second sub-pixel 501. The second driving circuit uses the same driving method as the first driving circuit. The second driving circuit mainly consists of transistors and capacitors. For example, the second driving circuit of this invention can be any one of a 1T circuit, a 2T1C circuit, a 3T1C circuit, a 6T1C circuit, a 6T2C circuit, a 7T1C circuit, a 7T2C circuit, or a 9T1C circuit, where T represents a transistor and C represents a capacitor. Taking a "2T1C circuit" as an example, it refers to a pixel circuit that includes two thin-film transistors (T) and one capacitor (C). Other circuits can be deduced similarly. For example, the driving method includes the width-to-length ratio (W / L) of the TFT (transistor) channel width and channel length used in the driving circuit, the capacitance value, and the method of one driving circuit driving one sub-pixel. This can improve the display uniformity between the first display area 10 and the second display area 20.

[0045] Please see Figure 6 , Figure 6 This is a cross-sectional structural diagram of another part of a display panel according to an embodiment of the present invention. The second display area 20 of the display panel 100 may employ an AMOLED (Active Matrix Organic Light Emitting Diode) display panel driving method. The second sub-pixel 501 includes an anode layer 511, a light-emitting functional layer 512, and a cathode layer 513 disposed on the first substrate 110. The anode layer 511, the light-emitting functional layer 512, and the cathode layer 513 may be configured as follows: Figure 4 The light-emitting unit 33 shown is, for example, an organic light-emitting diode (OLED). The second sub-pixel 501 is disposed within the second display area 20.

[0046] The first substrate 110 includes a thin-film transistor layer 510 with a second driving circuit 51. The thin-film transistor layer 510 may include a gate conductive layer, a source / drain conductive layer, a semiconductor active layer, and corresponding insulating layers. In the second driving circuit 51, corresponding to... Figure 4 The drain of the driving transistor M1 shown can be electrically connected to the anode layer 511 of the second sub-pixel 501 via conductive traces or vias, thereby transmitting the driving signal of the second driving circuit 51 to the second sub-pixel 501. In this way, the second driving circuit 51 can control its corresponding transistors to provide driving current to the anode layer 511 of the second sub-pixel 501, i.e., write a positive voltage to the anode of the second sub-pixel 501, and write a 0V or negative voltage to the coplanar cathode layer 513, i.e., write a 0V or negative voltage to the cathode of the second sub-pixel 501. This is equivalent to... Figure 4The driving signal flows between the anode and the cathode of the light emitting unit 33, thereby controlling the second sub-pixel 501 to emit light. It should be noted that the second driving circuit 51 of the present application does not necessarily have to be arranged on the first substrate 110. Figure 4 The 2T1C circuit shown is limited.

[0047] Please refer to Figure 5 and Figure 6 , the cathode layer 113 and the cathode layer 513 can be the same coplanar cathode layer, the anode layer 111 and the anode layer 511 can be the same metal layer but the anode layer of each sub-pixel is not conductive to each other, and the light emitting functional layer 112 and the light emitting functional layer 512 can be the same layer. The wiring substrate 3 is arranged on the side of the first substrate 110 away from the display panel. The first driving circuit 31 for driving the first sub-pixel 101 is arranged in the wiring substrate 3. The second driving circuit 51 for driving the second sub-pixel 501 is arranged in the first substrate 110.

[0048] In actual applications, the second driving circuit 51 can be arranged on the conventional array substrate layer of the display panel 100, but the present application is not limited thereto. It should be noted that the array substrate layer where the second driving circuit 51 is arranged and the wiring substrate 3 where the first driving circuit 31 is arranged do not belong to the same substrate layer.

[0049] In different embodiments, each first driving circuit 31 on the wiring substrate 3 can be used to drive one or more first sub-pixels 101. When each first driving circuit needs to drive multiple first sub-pixels, the multiple first sub-pixels of the same color will use transparent wires to connect the anodes, and the multiple first sub-pixels of the same color are generally arranged in a straight line or a broken line. In this case, the space occupied by the driving circuit can be saved, but the display effect will be adversely affected. When each first driving circuit only drives one first sub-pixel, the display effect is better, but in this case, if the pixel density of the first display area is also large, it will lead to a larger space for placing the required first driving circuit. The first driving circuit 31 of the present application is arranged on the wiring substrate 3, so it can meet the space requirement of one-to-one placement of the required first driving circuit, and thus the driving mode of the first display area 10 and the second display area 20 can be the same, for example, each driving circuit only drives one sub-pixel, so that the display uniformity effect is better.

[0050] Please continue to refer to Figure 1In an embodiment, the second display area 20 comprises an abutment area 21 and a third display area 22, the abutment area 21 is adjacent to the first display area 10 and is located between the first display area 10 and the third display area 22, and the first connection contact 2 is arranged in the abutment area 21. In this way, the first display area 10 is not affected by the first connection contact 2, and the signal transmission noise is reduced by relatively shortening the wiring distance of the first driving line 4. It should be noted that the pixel structure and driving circuit of the abutment area 21 and the third display area 22 can be completely different, in other words, there is no need to set a transition area between the second display area 20 and the first display area 10 to avoid the display effect from being suddenly changed.

[0051] In an embodiment, the projection of the wiring substrate 3 on the display surface of the display panel 100 is located in the abutment area 22. In this way, the wiring substrate 3 does not affect the light transmittance of the first display area 10, and does not affect other elements such as an under-screen camera that can be arranged below the first display area 10. The shape and position of the wiring substrate 3 can be changed correspondingly according to the shape of the first display area 10, and the present application is not limited thereto.

[0052] Please continue to refer to Figure 2 and Figure 1 , Figure 2 is a schematic diagram of the connection mode of the wiring substrate of an embodiment of the present application. In an embodiment, the second connection contact 32 and the first connection contact 2 are electrically connected by a solder pad (such as a gold bump) compression connection mode. In actual application, the sub-pixels 101 (including but not limited to red / green / blue sub-pixels) in the first display area 10 can be respectively connected to the first connection contact 2 in the second display area 20 by using transparent driving lines, the first driving circuit is arranged on the wiring substrate 3, and the transparent pixel layer (such as the electrode layer corresponding to the anode of the light-emitting diode) in the display panel 100 and the wiring substrate 3 are electrically connected by solder pad compression. The transparent pixel layer (such as the electrode layer corresponding to the anode of the light-emitting diode) and the wiring substrate 3 can be electrically connected by means of a via, and the via can be located in the second display area 20 and close to the edge of the first display area 10. The second connection contact 32 and the first connection contact 2 can both have multiple.

[0053] Please refer to Figure 3 and Figure 1 , Figure 3 is a schematic diagram of the connection mode of the wiring substrate of another embodiment of the present application. The display panel described in this embodiment is the same as Figure 2The main difference of the embodiment shown is that the second connection contact 32 is electrically connected to the first connection contact 2 by a flexible wire 6. In practical applications, the sub-pixels 101 (including but not limited to red / green / blue sub-pixels) in the first display area 10 can be respectively connected to the first connection contact 2 in the second display area 20 by transparent driving lines. The first driving circuit is arranged on the wiring substrate 3. The transparent pixel layer (such as the electrode layer corresponding to the anode of the light-emitting diode) in the display panel 100 is electrically connected to the first driving circuit on the wiring substrate 3 through the flexible wire 6 and the first connection contact 2. The flexible wire 6 can be a conventional conductor or an alloy. The flexible wire 6 can be adjusted in winding mode, length and position according to the requirements of the mechanism stack. The present application is not limited in this regard. In this embodiment, the same parts as in the previous embodiment will not be described here.

[0054] In different embodiments of the present application, the light-emitting layer material of the first sub-pixel 101 can be a transparent light-emitting material. The first sub-pixel 101 can include a first electrode layer, a second electrode layer and an organic layer. The light transmittance of the first electrode layer and the second electrode layer can be greater than or equal to 70%, or even more than 90%. For example, the first electrode layer is an anode, the second electrode layer is a cathode, the cathode is a surface electrode, and the organic layer includes a layer of organic light-emitting material. Alternatively, the material of the first electrode layer includes at least one of indium tin oxide, indium zinc oxide, indium tin zinc oxide, silver-doped indium tin oxide, silver-doped indium zinc oxide and graphene; the material of the second electrode layer includes at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, silver-doped indium zinc oxide, graphene, magnesium, silver and aluminum; the organic layer can be made of organic molecules or organic polymers; it should be noted that the present application is not limited in this regard.

[0055] In order to further improve the light transmittance of the first display area 10, the display panel can further include a pixel definition layer made of transparent material, the pixel definition layer has a plurality of openings, and the light-emitting layer structure of the first sub-pixel 101 is arranged in the openings. The pixel definition layer can be made of transparent organic material or transparent inorganic material.

[0056] In different embodiments of the present application, the first driving line 4 is a transparent driving line. The material of the first driving line 4 can include at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, silver-doped indium zinc oxide and graphene. For example, the first driving line 4 uses transparent indium tin oxide (ITO) wiring to reduce the resistance of the wiring on the basis of high light transmittance of the first driving line 4.

[0057] In different embodiments of the present application, the wiring substrate 3 can be a hard or flexible circuit substrate, and the first driving circuit is fixed on the wiring substrate 3 in the form of a chip, so that the size of the wiring substrate 3 is reduced, and the wiring substrate 3 is thinner and lighter.

[0058] In different embodiments of the present application, the connection of the first connection contact 2 can be reinforced or encapsulated after binding to improve the reliability of the electrical connection.

[0059] In different embodiments of the present application, the side of the display panel 100 facing the display surface can be provided with a glass cover plate, and the side of the display panel 100 facing away from the display surface can be provided with a support film, so as to strengthen the display panel.

[0060] Please refer to Figure 7 , Figure 7 is a schematic diagram of a display device according to an embodiment of the present application. The display device 200 comprises the display panel 100 according to any one of the above embodiments. The display device 200 can further comprise a camera 30 arranged below the first display area 10 of the display panel 100.

[0061] The display device according to the present application can be a smart phone, a tablet computer, a television, a display, a vehicle-mounted display screen, a navigator, or the like.

[0062] The display panel and the display device according to the present application can place the driving circuit of the sub-pixel in the first display area on the extra wiring substrate, so as to avoid the problem of excessively low pixel density of the first display area caused by the space limitation of the driving circuit, thereby effectively improving the integrated display effect of the first display area and the second display area.

[0063] The present application has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples for implementing the present application. In addition, the technical features involved in the different embodiments of the present application described above can be combined with each other as long as they do not conflict with each other. It must be pointed out that the disclosed embodiments do not limit the scope of the present application. On the contrary, modifications and improvements made without departing from the spirit and scope of the present application are also within the scope of the patent protection of the present application.

Claims

1. A display panel having a first display area and a second display area, characterized in that The display panel comprises: a first pixel unit comprising a plurality of first sub-pixels, disposed in the first display area; a first connection contact, the first sub-pixels being electrically connected to the first connection contact through a first driving line, the first connection contact being disposed outside the first display area, the first connection contact being disposed in the second display area; a second pixel unit comprising a plurality of second sub-pixels, disposed in the second display area; a wiring substrate disposed on a side of the display panel away from a display surface thereof, the wiring substrate comprising a first driving circuit and a second connection contact electrically connected to the first driving circuit, the second connection contact being electrically connected to the first connection contact, the first driving circuit being configured to drive the first sub-pixels; and a second driving circuit configured to drive the second sub-pixels, the array substrate layer in which the second driving circuit is disposed and the wiring substrate in which the first driving circuit is disposed not belonging to the same substrate layer.

2. The display panel of claim 1, wherein: a light transmittance of the first display area is higher than that of the second display area; a projection of the wiring substrate on the display surface does not overlap with the first display area; the second pixel unit has the same pixel arrangement as the first pixel unit.

3. The display panel of claim 1, wherein, the second driving circuit has the same driving mode as the first driving circuit.

4. The display panel of claim 1, wherein, the second display area comprises an abutment area and a third display area, the abutment area being adjacent to the first display area and located between the first display area and the third display area, the first connection contact being disposed in the abutment area.

5. The display panel of claim 4, wherein, the projection of the wiring substrate on the display surface is located in the abutment area.

6. The display panel of claim 1, wherein, the second connection contact is electrically connected to the first connection contact through a pad crimping method.

7. The display panel of claim 1, wherein, the second connection contact is electrically connected to the first connection contact through a flexible lead wire.

8. The display panel of claim 1, wherein, a light-emitting layer material of the first sub-pixel is a transparent light-emitting material.

9. The display panel of claim 1, wherein, the first driving line is a transparent lead wire.

10. A display device, characterized by a display panel as claimed in any one of claims 1-9.

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