Display panel, folding screen, and folding screen device

Abstract

A display panel (500), a folding screen, and a folding screen device (100). The display panel (500) is applied to the folding screen device (100). A first display driver integrated circuit (520-1) and a second display driver integrated circuit (520-2) of the folding screen device (100) are arranged along a longer first edge of the folding screen device (100), the first edge being perpendicular to a hinge (540) of the folding screen device (100) and adjacent to a shorter second edge of the folding screen device; and a first gate driver (510a) of the folding screen device (100) is arranged along the second edge. The display panel (500) comprises: a plurality of scanning signal lines (511) and a first trace array (560), wherein the plurality of scanning signal lines (511) are connected to the first gate driver (510a) and are perpendicular to the hinge (540); and a first end of the first trace array (560) is connected to the first display driver integrated circuit (520-1), and a second end of the first trace (560) array is connected to a data signal line (521) in a first folding sub-region (551) of a first display region. The display panel (500) enables an increased charging time of a pixel unit (530), and also enables traces (561, 571, 581, 591) between the scanning signal lines (511) and the display driver integrated circuits (520, 520-1, 520-2) to avoid a folding region (550).

Description

Display panels, foldable screens, and foldable screen devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on December 21, 2023, with application number 202311782570.6 and application name “Display panel, foldable screen and foldable screen device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of display screens, and in particular to a display panel, a folding screen, and a folding screen device. Background Art

[0003] As the size of the screen becomes larger and larger, the number of pixel units in the display panel increases, and the number of rows and columns in which the corresponding pixel units are arranged also increases.

[0004] In common display panels, the gate driver is arranged along the long side of the display panel, and the scan signal line can be arranged perpendicular to the long side (also perpendicular to the rotation axis). Then the DDIC can be arranged along the short side of the display panel, so that the data signal line and the scan signal line are perpendicular to each other, thereby driving each pixel unit. When the scan signal lines can be arranged parallel to the long side, as the screen size becomes larger and larger, the number of scan signal lines will increase. Furthermore, with the demand for high refresh frequency of the screen, the time for refreshing each frame of the image is getting shorter and shorter, and the charging time of each scan signal line to the pixel unit connected to it will become shorter and shorter accordingly.

[0005] The gradually shortening charging time will place higher and higher requirements on the process of display panels, challenging the limits of the industry. The technology is too difficult and is not conducive to cost savings.

[0006] Summary of the Invention

[0007] The present application provides a display panel, a folding screen and a folding screen device, which can increase the charging time of the pixel unit and enable the routing between the scanning signal line and the DDIC to avoid the folding area.

[0008] In a first aspect, a display panel is provided, which is applied to a folding screen device, the folding screen device including a first display driver chip, a second display driver chip and a first gate driver; the first display driver chip and the second display driver chip are arranged along a first side of the folding screen device, the first side is a side perpendicular to the rotating axis of the folding screen device, the first side and the second side of the folding screen device are adjacent sides, and the first side is longer than the second side; the first display driver chip is located on a first side of the rotating axis, and is used to output data signals to a first display area of ​​the display panel located on the first side; the second display driver chip is located on a second side of the rotating axis, and is used to output data signals to a second display area of ​​the display panel located on the second side; the first gate driver is arranged along the second side; the display panel includes: a plurality of scan signal lines, the plurality of scan signal lines are connected to the first gate driver, and the plurality of scan signal lines are perpendicular to the rotating axis; the display panel also includes: a first wiring array; a first end of the first wiring array is connected to the first display driver chip, and a second end of the first wiring array is connected to a data signal line of a first folding sub-area in the first display area, and the first folding sub-area is a sub-area in the first display area that bends when the folding screen device is folded.

[0009] The first side is the long side of the foldable screen device, and the second side is the short side of the foldable screen device. Placing the first gate driver along the short side can reduce the number of scan signal lines, thereby increasing the charging time of each row of pixel units, thereby reducing the process requirements of the display panel and helping to reduce costs. At the same time, by setting a first wiring array within the display panel to connect the DDIC and the data signal lines in the first foldable sub-area, it is possible to avoid the foldable area and meet the folding requirements.

[0010] In some possible implementations, the first routing array includes a plurality of first routing lines, the plurality of first routing lines do not intersect with each other, and each first routing line is in the shape of a ring with an opening.

[0011] The use of a ring-shaped connection with an opening between the DDIC and the data signal line in the folding sub-area can realize the connection of the data signal between the DDIC and the folding sub-area, avoid the folding area, and meet the folding requirements.

[0012] In some possible implementations, the first routing includes a first sub-edge, a second sub-edge, and a third sub-edge; the two ends of the second sub-edge are respectively connected to the first end of the first sub-edge and the first end of the third sub-edge; the second end of the first sub-edge is connected to the first display driver chip, and the second end of the third sub-edge is connected to the data signal line of the first folding sub-area.

[0013] It should be noted that these three sub-edges can be an integrated structure for easy processing.

[0014] In some possible implementations, the first sub-side and the second sub-side are straight lines, the second sub-side is arc-shaped, and a concave direction of the second sub-side is opposite to an opening direction.

[0015] In some possible implementations, the first sub-edge, the second sub-edge, and the third sub-edge are all straight lines, and the first sub-edge is perpendicular to the second sub-edge, and the third sub-edge is perpendicular to the second sub-edge.

[0016] Different shapes of first traces can adapt to the layout and wiring requirements of different display panels and can be flexibly selected as needed. A trace with small corners can also be used to ensure signal integrity.

[0017] In some possible implementations, the first trace is U-shaped.

[0018] That is, the first trace includes a first sub-edge, a second sub-edge and a third sub-edge, the first sub-edge and the third sub-edge are parallel, the second sub-edge is arc-shaped, and the concave direction of the arc is opposite to the direction of the annular opening.

[0019] In some possible implementations, the first trace is concave.

[0020] That is, the first sub-side, the second sub-side and the third sub-side are all straight lines, and the first sub-side is perpendicular to the second sub-side, and the third sub-side is perpendicular to the second sub-side.

[0021] Different shapes of first traces can adapt to the layout and wiring requirements of different display panels and can be flexibly selected as needed. A trace with small corners can also be used to ensure signal integrity.

[0022] In some possible implementations, the display panel also includes: a second wiring array; the first end of the second wiring array is connected to the second display driver chip, the second end of the second wiring array is connected to the data signal line of the second folding sub-area in the second display area, and the second folding sub-area is a sub-area in the second display area that bends when the folding screen device is folded.

[0023] In some possible implementations, the second routing array includes a plurality of second routings, the plurality of second routings do not intersect with each other, and the second routings have the same shape as the first routings.

[0024] In some possible implementations, the first display area also includes a first edge sub-area, which is a sub-area in the first display area away from the rotation axis and close to the second side; the display panel also includes: a third wiring array; the first end of the third wiring array is connected to the first display driver chip, and the second end of the third wiring array is connected to the data signal line of the first edge sub-area; the third wiring array includes multiple third wirings, and the multiple third wirings do not intersect with each other.

[0025] In some possible implementations, the third routing line has the same shape as the first routing line; or, the third routing line is a straight line.

[0026] When the third trace has the same shape as the first trace, different shapes can be used to meet the layout and wiring requirements of different display panels, and can be flexibly selected as needed. A trace with small corners can also be used to ensure signal integrity.

[0027] In some possible implementations, the second display area also includes a second edge sub-area, which is a sub-area in the second display area away from the rotation axis and close to the second side; the display panel also includes: a fourth wiring array; the first end of the fourth wiring array is connected to the second display driver chip, and the second end of the fourth wiring array is connected to the data signal line of the second edge sub-area; the fourth wiring array includes multiple fourth wirings, and the multiple fourth wirings have the same shape and do not intersect with each other.

[0028] In some possible implementations, the fourth routing line has the same shape as the second routing line; or the fourth routing line is a straight line.

[0029] When the fourth trace adopts the same shape as the first trace, different shapes can adapt to the layout and wiring requirements of different display panels and can be flexibly selected as needed. A trace with small corners can also be used to ensure signal integrity.

[0030] In some possible implementations, the folding screen device also includes a second gate driver, the first gate driver and the second gate driver are respectively arranged along different second sides, the first row of scan signal lines is a scan line of any row of multiple scan signal lines, the first row of scan signal lines includes a first segment and a second segment, the first segment is located in the first display area, the first segment is connected to the first gate driver, the second segment is located in the second display area, the second segment is connected to the second gate driver, and the first segment and the second segment are not connected.

[0031] When using half-screen display, for example, the first display area is displayed and the second display area is off. Taking the first row of scan signal lines as an example, the first segment, driven by the first gate driver, transmits a scan signal to the pixel unit connected to the first segment, and the pixel unit connected to the second segment is disconnected from the first segment. Therefore, for the first gate driver, the load connected to the first row of scan lines can be reduced by half compared to the traditional case of running through the entire screen. When the load is greatly reduced, the power consumption of the pixel unit connected to the first row of scan lines can be reduced to the greatest extent. That is to say, with this solution, when the first display area is displayed and the second display area is off, the second display driver chip in the second display area can enter a deep sleep state, thereby achieving the effect of minimizing power consumption.

[0032] Correspondingly, if the first display area is off and the second display area is in half-screen display state, the first display driver chip in the first display area can also enter a deep sleep state to minimize power consumption.

[0033] In a second aspect, an embodiment of the present application provides a folding screen, comprising any display panel in the technical solution described in the first aspect.

[0034] In a third aspect, an electronic device is provided, which includes any display panel in the technical solution described in the first aspect.

[0035] In a fourth aspect, an electronic device is provided, which includes any folding screen in the technical solution described in the second aspect.

[0036] In some possible implementations, the electronic device is a foldable screen device.

[0037] By setting a first wiring array in the display panel to connect the DDIC and the data signal lines in the first folding sub-area, the folding area can be avoided to meet the folding requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG1 is a schematic structural diagram of a terminal device 100 provided in an embodiment of the present application;

[0039] FIG2 is a schematic diagram of an interface of a folding screen device provided in an embodiment of the present application;

[0040] FIG3 is a schematic diagram of an interface of a folding screen device provided in an embodiment of the present application;

[0041] FIG4 is a schematic diagram showing the arrangement of a gate driver and a DDIC in a display panel according to an embodiment of the present application;

[0042] FIG5 is a schematic diagram of the arrangement of a gate driver and a DDIC in another example of a display panel provided in an embodiment of the present application;

[0043] FIG6 is a schematic diagram showing the arrangement of a wiring array in a display panel with a data signal line as a reference, provided in an embodiment of the present application;

[0044] FIG7 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0045] FIG8 is a schematic diagram of different trace shapes in a trace array provided in an embodiment of the present application;

[0046] FIG9 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0047] FIG10 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0048] FIG11 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0049] FIG12 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0050] FIG13 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0051] FIG14 is a schematic diagram of another example of the arrangement of a wiring array in a display panel provided in an embodiment of the present application;

[0052] FIG15 is a schematic diagram of a scanning signal line in a display panel provided in an embodiment of the present application;

[0053] FIG16 is a schematic diagram of a scanning signal line and a wiring array in a display panel provided in an embodiment of the present application.

[0054] Reference numerals: In conventional technology: Display panel: 200; Left half screen: 210; Right half screen: 220; Rotating hinge: 230; Folding line: 240; Folding area: 250; DDIC: 260; Data signal line 261; Gate driver: 270; Scan signal line: 271; Pixel unit: 280;

[0055] In the present application: Display panel: 500; First gate driver: 510a; Second gate driver: 510b; Scan signal line: 511; First segment: 511a; Second segment: 511b; DDIC: 520; First DDIC: 521-1; Second DDIC: 521-2; Data signal line: 521; Fan-out trace: 522; Pixel unit: 530; Folding line: 540; Folding region: 550; First folding sub-region: 551; Second folding sub-region: 552; First edge sub-region: 553; Second edge sub-region: 554; First trace array: 560; First trace: 561; First sub-edge: 561A; Second sub-edge: 561B; Third sub-edge: 561C; First via: 562; Second trace array: 570; Second trace: 571; Second via: 572; Third routing array: 580; Third routing: 581; Fourth routing array: 590; Fourth routing: 591. DETAILED DESCRIPTION

[0056] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships can exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0057] In the following, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Therefore, a feature specified as "first," "second," or "third" may explicitly or implicitly include one or more of the features.

[0058] The display panel provided in the embodiments of the present application can be applied to terminal devices with foldable screens, such as mobile phones, tablet computers, wearable devices, vehicle-mounted devices, augmented reality (AR) / virtual reality (VR) devices, laptop computers, ultra-mobile personal computers (UMPCs), netbooks, and personal digital assistants (PDAs). The embodiments of the present application do not impose any restrictions on the specific type of terminal device.

[0059] For example, FIG1 is a schematic diagram of the structure of a terminal device 100 provided in an embodiment of the present application. The terminal device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a universal serial bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display 194, and a subscriber identification module (SIM) card interface 195, etc. The sensor module 180 may include a pressure sensor 180A, a gyroscope sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, etc.

[0060] It should be understood that the structures illustrated in the embodiments of the present application do not constitute a specific limitation on the terminal device 100. In other embodiments of the present application, the terminal device 100 may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0061] It is understood that the interface connection relationship between the modules illustrated in the embodiments of the present application is merely an illustrative illustration and does not constitute a structural limitation on the terminal device 100. In other embodiments of the present application, the terminal device 100 may also adopt a different interface connection method from the above embodiments, or a combination of multiple interface connection methods.

[0062] It should be noted that the display panel provided in the embodiments of the present application is applied to a terminal device with a foldable screen. Hereinafter, it is referred to as a foldable screen device. The display panel, the copper foil and foam located below the display panel, and the polarizer, touch layer, optical adhesive, and cover plate located above the display panel are integrated to form the screen of the foldable screen device. The screen on the foldable screen device can be bent, realizing the folding function of the foldable screen device.

[0063] Typically, foldable screen devices have larger screens. Foldable screen devices are also equipped with a hinge, which is located below the screen. Although the screens on both sides of the hinge are integrated into a complete screen, they can be functionally considered as two halves, referred to as the left and right halves of the foldable screen device, or the upper and lower halves, depending on the direction they are held. These two halves can jointly display the interface of the same application, as shown in Figure 2 (a); they can also separately display the interfaces of different applications, as shown in Figure 2 (b); or they can only display the interface of one half of the screen while the other half is closed. The rotation of the hinge of the foldable screen device can drive the left and / or right half of the screen (the upper and / or lower half of the screen) to rotate, thereby expanding or closing the foldable screen device. When the foldable screen device switches between the expanded and closed states, the two halves of the screen can fold along a folding line parallel to the hinge, as shown in Figures 3 (a) and (b) for details. Figure (a) in Figure 3 is a schematic diagram of the folding screen device in a semi-folded state between the folded state and the closed state. It can be seen from the figure that the left half screen 210 and the right half screen 220 can be folded along the folding line 240 under the action of the rotating shaft 230. Figure (b) in Figure 3 is a schematic diagram of the folding screen device in the unfolded state. It should be noted that the folding line 240 is not an actual line, but a virtual line introduced to facilitate the description of the technical solution and to clearly illustrate the folding state of the screen. The area around the folding line 240 can be referred to as the folding area 250 of the screen, as shown in Figure (b) in Figure 3. When the folding screen device is in a closed state (folded state) or a semi-folded state, the folding area 250 of the screen will bend, while the non-folding area of ​​the screen will not bend. Folding screen devices usually use flexible screens to meet bending requirements.

[0064] Typically, the display driver integrated circuit (DDIC) 260 of the folding screen device is arranged along the short side of the folding screen device, that is, along an edge parallel to the rotating shaft 230, as shown in Figure (b) of Figure 3.

[0065] In FIG. 3 (b), the display panel 200 has a display area. The display panel 200 further includes a gate driver on array (GOA) 270, a scan signal line 271, and a plurality of pixel units 280. The plurality of pixel units 280 are located within the display area of ​​the display panel 200 and are arranged in an array. The gate driver and the scan signal line may be referred to as a GOA scan circuit (GOA SCAN circuit). Generally, the pixel units 280 in the same column are connected to the gate driver 270 via a scan signal line 271 (the scan signal lines shown in FIG. 4 include G1, G2, G3, G4, G5, G6, G7, G8, G9, and G10); the pixel units 280 in the same row are also connected to the DDIC 260 via a data signal line 261 (the data signal lines shown in FIG. 4 include S1, S2, S3, S4, S5, S6, and S7). When the display panel 200 is working, the gate driver 270 outputs a scan signal to each scan signal line 271 in sequence, thereby scanning a plurality of pixel units 280 row by row. When the gate driver 270 outputs a scan signal, the DDIC 260 is used to output a data signal to each data signal line 261. Based on this, when a scan signal line 271 inputs a scan signal and a data signal line 261 inputs a data signal, the pixel unit 280 connected to this scan signal line 271 and this data signal line 261 can work and emit light. After the gate driver 270 scans all the pixel units 280 of the display panel 200 row by row once, the display panel 200 displays a frame of image. When the folding screen device is working, the display panel 200 can display images at a certain refresh frequency. The refresh frequency refers to the number of frames of image displayed by the display panel 200 per second.

[0066] As the size of the screen becomes larger and larger, the number of pixel units 280 in the display panel 200 increases, and the number of rows and columns in which the corresponding pixel units are arranged also increases. In a common display panel 200, taking Figure 4 as an example, the gate driver 270 is arranged along the long side (the side in the X direction) of the display panel 200, and the scan signal line 271 can be arranged perpendicular to the long side (also perpendicular to the rotation axis). Then the DDIC 260 can be arranged along the short side (the side in the Y direction) of the display panel 200, so that the data signal line 261 and the scan signal line 271 are perpendicular to each other, thereby driving each pixel unit 280. When the scan signal lines 271 can be arranged parallel to the long side, as the screen size becomes larger and larger, the number of scan signal lines 271 will increase. Furthermore, with the demand for high refresh rates of the screen, the time it takes to refresh each frame of the image is getting shorter and shorter, and the charging time of each scan signal line 271 for the pixel units 280 connected to the column will correspondingly become shorter and shorter.

[0067] For example, in a display panel with 2344 (RGB) × 2156 pixels and a refresh rate of 120 Hz, the charging time for each row of pixel units is approximately 3.8 microseconds (us). When the pixels are 2214 (RGB) × 3250 and the refresh rate is 120 Hz, the charging time for each row of pixel units is approximately 2.51 microseconds (us). When the refresh rate remains unchanged, when the number of scanning rows increases from 2156 to 3250, the charging time for each row of pixel units is shortened from 3.8us to about 2.51us. The gradually shortened charging time will also place higher and higher requirements on the process of the display panel 200, challenging the industry limits, with excessive technical difficulty and not conducive to cost savings.

[0068] Based on this, an embodiment of the present application provides a display panel, as shown in FIG5 . The display panel 500 can be applied to a folding screen device 100 . In FIG5 , the folding line 540 of the display panel 500 is parallel to the short side, the first gate driver 510a is arranged along the short side, and the DDIC 520 is arranged along the long side. Among them, the first gate driver 510a is arranged along the short side, so that the scan signal line 511 is arranged parallel to the long side. In this way, when the size and resolution of the display panel 500 remain unchanged, the number of scan signal lines 511 is reduced compared to the case where the gate driver is arranged along the long side in FIG4 , thereby improving the charging time of each row of pixel units 530. It should be noted that the number, number of rows, and number of columns of pixel units 530 shown in FIG4 and FIG5 are for example only. The actual number, number of rows, and number of columns of pixel units 530 are more than those shown in FIG4 and FIG5 . The specific values ​​are related to the size and resolution of the display panel and are not limited by the embodiment of the present application.

[0069] When the first gate driver 510a is arranged along the short side, the charging time of each row of pixel units 530 can be extended, reducing the process requirements for the display panel. In this case, the DDIC 520 is correspondingly arranged along the long side. Specifically, the folding screen device can use multiple cascaded DDICs to realize data signal transmission, as shown in Figure 5. Figure 5 uses an example of using two DDICs 520 to transmit data signals to the pixel units of the left and right half screens respectively. In fact, the left or right half screen can also use more DDIC solutions, and this embodiment of the application is not limited to this. Taking the left half screen as an example, if the fan-out trace 522 between the data signal line 521 and the DDIC adopts the fan-out trace form (fanout) as shown in Figure 5. If the fan-out trace method is adopted, the trace occupies a relatively large space, and the fan-out trace needs to be implemented on the printed circuit board, which cannot meet the bending requirements of the folding screen device. In other words, the fan-out trace cannot be implemented in the folding area, such as the trace in the fan-out area connected by S5 and S6 in Figure 5.

[0070] Based on this, the display panel provided in the embodiment of the present application includes an internally arranged fanout in array area (FIAA), which may be referred to as a routing array in the present application, for realizing the connection between the data signal line 521 and the DDIC 520 in the folding area. Specifically, taking the first routing array 560 arranged in the left half of the display panel 500 as an example, the first routing array 560 includes a plurality of first routing lines 561 of the same or similar shape. The shape of the first routing line 561 can be a ring with an opening. Figures (a) and (b) in Figure 6 illustrate the first routing line 561 as a square ring with one side open as an example. Each first routing line 561 is spaced apart and does not intersect with each other. The first end of each first routing line 561 is connected to a pin of the first DDIC 520-1, and the second end of each first routing line 561 is respectively connected to a data signal line in the first folding sub-area 551 of the left half of the screen (first display area). It should be noted that the connection between the first routing line 561 and the data signal line 521 can be coupling or welding.

[0071] By setting a first wiring array in the display panel to connect the DDIC and the data signal lines in the first folding sub-area, the folding area can be avoided to meet the folding requirements.

[0072] Optionally, a second routing array 570 similar to the first routing array 560 may also be provided in the right half screen of the display panel 500. Optionally, the second routing array 570 includes a plurality of second routing lines 571 of the same or similar shape. The shape of the second routing line 571 may be the same as, different from, or similar to that of the first routing line 561. Optionally, when the shape of the second routing line 571 is the same as that of the first routing line 561, the second routing array 570 and the first routing array 560 may be symmetrically arranged, which facilitates design and processing. Figure (b) in Figure 6 illustrates an example in which the second routing line 571 and the first routing line 561 have the same shape. Spaces are also provided between each second routing line 571 so that they do not intersect with each other. The first end of each second routing line 571 is connected to a pin of the second DDIC 520-2, and the second end of each second routing line 571 is respectively connected to a data signal line in the second folding sub-area 552 of the right half screen (second display area). It should be noted that the connection between the second trace 571 and the data signal line 521 can be coupling or welding.

[0073] The distribution and number of data signal lines 521 shown in Figures 5 and 6 are merely examples. In reality, the number of data signal lines 521 is much greater than shown, and the arrangement is also more dense. Accordingly, the number of first lines 561 in the first line array 560 and the number of second lines 571 in the second line array 570 are also greater, and the arrangement is more dense. Figure 7 is a schematic diagram of the first line array 560 and the second line array 570 with the data signal lines 521 omitted. It should be noted that the number of first lines 561 and the number of second lines 571 in the second line array 570 in Figure 7 are also merely examples, intended to illustrate the actual arrangement of the first lines 561 and the second lines 571.

[0074] It should be noted that in Figure 6 and other figures involved in the embodiments of the present application, DDIC520-1 and DDIC520-2 are shown outside the area of ​​the display panel in order to facilitate the distribution of the wiring array. In the actual structure, DDIC520-1 and DDIC520-2 are located below the display panel (in the opposite direction of the display screen). That is to say, in the perspective view of the display panel, DDIC520-1 and DDIC520-2 are located in the projection area of ​​the plane of the display panel and are arranged along the long side. Therefore, the data signal lines can be distributed over the entire display panel area and bend at the edges toward the bottom of the display panel to connect DDIC520-1 and DDIC520-2.

[0075] Optionally, Figure 7 (a) shows an example in which the first wiring array 560 uses same-layer wiring, that is, in the first wiring array, multiple first wirings 561 do not intersect with each other, and the projections of the multiple first wirings in the planar direction of the display panel do not intersect with each other.

[0076] Optionally, the first wiring array 560 can also be wired in layers, as shown in the example of Figure (b) in Figure 7. Each first wiring 561 is distributed in different layers through a first via 562. Taking the distribution of the first wiring array in a soft board structure with two wiring layers as an example, a part of the first wiring 561 is distributed in the first layer of the soft board structure, and the other part of the first wiring 561 is arranged in the second layer of the soft board structure through the first via 562 penetrating between the first layer and the second layer of the soft board structure, thereby realizing distribution layer wiring. In this case, the projections of the multiple first wirings in the plane direction of the display panel intersect with each other, which can reduce the size difference of each first wiring, facilitate reducing the difference in data signals transmitted by the multiple first wirings, and also reduce the layout area of ​​the entire first wiring array 560.

[0077] Optionally, the position of the first via 562 is only an example. In fact, the first via 562 can also be distributed at any position of the first trace, as long as multiple first traces do not intersect and meet the requirements of electromagnetic compatibility and signal integrity.

[0078] Optionally, the second traces 571 in the second trace array 570 may also refer to the form of the first traces 561 and be distributed in different layers through the second vias 572 , which will not be described in detail here.

[0079] It should be noted that the square ring with an open side mentioned in FIG6 can also be described as a "concave" shape. Taking the first trace 561 as an example, the square ring with an open side includes a first sub-side 561A, a second sub-side 561B, and a third sub-side 561C. For details, see FIG8 (a). Among them, the two ends of the second sub-side 561B are respectively connected to the first end of the first sub-side 561A and the first end of the third sub-side 561C, the second end of the first sub-side 561A is connected to the first display driver chip 520-1, and the second end of the third sub-side 561C is connected to the data signal line of the first folding sub-area 551.

[0080] Optionally, the second sub-side 561B and the first sub-side 561A can be perpendicular to each other, or nearly perpendicular, such as at an angle of approximately 90 degrees ± 10 degrees. The second sub-side 561B and the third sub-side 561C can be perpendicular to each other, or nearly perpendicular, such as at an angle of approximately 90 degrees ± 10 degrees. FIG. 8 (a) illustrates perpendicularity as an example.

[0081] Alternatively, as shown in FIG9 , the DDIC occupies the display area of ​​the display panel. In this case, the end of the data signal line connected to the DDIC needs to avoid the space where the DDIC is arranged to facilitate the connection between the data signal line and the DDIC in the middle sub-area of ​​the first display area. In other words, there is no need to arrange the data signal line below the position where the DDIC is arranged, and the data signal line cannot be arranged to the edge of the screen. Taking FIG9 as an example, there is no need to arrange the data signal line in the areas on the left and right sides of the DDIC, and the structure where the data signal line is distributed does not need to be bent to achieve connection with the data signal line. Although the display area is reduced, it is convenient for installation.

[0082] As the display area grows, the endpoints of the data signal lines need to be extended closer to the screen edges to maximize the display area. When DDICs are distributed along the screen edge, the first traces do not need to leave space for the DDICs to connect them. This allows the existing area to be fully utilized for data signal line routing, increasing the display area, as shown in Figures 6 and 7.

[0083] The shape of the first trace 561 described above is merely an example. In practice, the shape of the first trace 561 may also refer to the shapes shown in other figures in Figure 8. Optionally, the angles between the second sub-edge 561B and the first sub-edge 561A, and between the second sub-edge 561B and the third sub-edge 561C may also be chamfered, such as the rounded angle shown in Figure 8(b).

[0084] Optionally, the second sub-edge 561B may be arc-shaped, with the concave direction of the arc opposite to the opening direction, as shown in Figure 8 (c). When the second sub-edge 561B is arc-shaped, the ring-shaped opening may also be described as a "U" shape. The first sub-edge 561A and the third sub-edge 561C in the U-shape may be of equal length, or the first sub-edge 561A may be shorter than the third sub-edge 561C, or the first sub-edge 561A may be longer than the third sub-edge 561C, as long as the process tolerances are met and a normal connection is ensured.

[0085] Optionally, the shape of the first trace may also be as shown in FIG8 (d), which is a circular ring with one side open.

[0086] Different shapes of first traces can adapt to the layout and wiring requirements of different display panels and can be flexibly selected as needed. A chamfered or curved trace with small corners or a trace that can take into account signal integrity can be used.

[0087] Accordingly, the specific shapes of the first routing array and the second routing array obtained by adopting the shape of the first routing shown in Figures (a) to (d) in Figure 8 can be seen in Figures 7, 10, 11 and 12.

[0088] The shapes of the first traces shown in FIG. 8 can all be distributed in two layers, that is, each first trace is distributed in two layers through vias, which facilitates arrangement and can reduce the arrangement area of ​​the first trace array.

[0089] For ease of description, the sub-area near the short side of the screen is referred to as an edge sub-area. Specifically, as shown in FIG13(a), the sub-area near the short side of the screen in the first display area is a first edge sub-area 553, and the sub-area near the other short side of the screen in the second display area is a second edge sub-area 554. It should be noted that the sub-area between the edge sub-area and the folding sub-area can be referred to as an intermediate sub-area.

[0090] Typically, in the corner area of ​​the screen, that is, the edge sub-area, a fan-out routing method can be used between the data signal line and the DDIC, such as in Figure 13 (b). In some embodiments, in the edge sub-area, a ring-shaped routing array with an opening can also be used inside the display panel for implementation, such as in Figure 13 (c). Figure 13 (c) shows an example of a third routing array 580 formed by a plurality of third routing lines 581 in the lower left corner of the screen as a square ring with an opening. The first end of the third routing array 580 is connected to the first display driver chip 520-1, and the second end of the third routing array 580 is connected to the data signal line 521 in the first edge sub-area 553. These multiple third routing lines 581 have the same or similar shapes, different sizes and do not intersect with each other. Compared with fan-out routing, this routing method can increase the display area. The specific principle is as described above and will not be repeated here.

[0091] Alternatively, the area in the lower right corner of the screen can also be illustrated as an example using a fourth routing array 590 in which a plurality of fourth routing lines 591 are formed as a square ring with an opening. The first end of the fourth routing array 590 is connected to the second display driver chip 520-2, and the second end of the fourth routing array 590 is connected to the data signal line 521 in the second edge sub-area 554. These multiple fourth routing lines 590 have the same or similar shapes, different sizes, and do not intersect with each other. Compared to traditional fan-out routing, this routing method can increase the display area. The specific principle is as described above and will not be repeated here.

[0092] It should be noted that the shapes of the third and fourth lines 581 and 591 may be the same or different, and the shapes of the third and fourth lines 581 and 591 may be the same or different from the shapes of the first and second lines 561 and 571, or may be partially the same and partially different.

[0093] FIG14 illustrates an example of a third trace 581 in the third trace array 580 and a fourth trace 591 in the fourth trace array 590 being square rings with openings. The shapes of the third trace 581 and the fourth trace 591 can be found in the description of the first trace 561 and the second trace 571 above, and are not further described here. Alternatively, the shapes of the first trace 561 (561-1 and 561-2), the second trace 571 (571-1 and 571-2), the third trace 581, and the fourth trace 591 can all be different, and are not further described here.

[0094] Based on the above embodiments, common scan signal lines are metal lines arranged row by row, usually running through the left and right sides of the screen. For example, G1-G7 shown in Figure 5. In the embodiment of the present application, each row of scan signal lines is divided into two separate sections and connected to different gate actuators. That is, in a folding screen device, a second gate driver can also be provided at another second side different from the second side where the first gate driver is located, for outputting scan signals to the scan signal lines arranged in the second display area. Taking the first row of scan signal lines in any one row as an example, the first row of scan signal lines 511 may include a first section 511a provided in the first display area and a second section 511b provided in the second display area. Although the first section 511a and the second section 511b are referred to as the first row of scan signal lines, they are not two parts with an integral structure, but two scan signal lines that are not connected to each other. It is just that when the full screen is displayed, the two sections of the same row of scan signal lines can be used to simultaneously output scan signals to the pixel units in the same row. Specifically, one end of the first segment 511a can be connected to the first gate driver 510a, for transmitting the scanning signal output by the first gate driver 510a to the pixel unit 530 in the first display area; one end of the second segment 511b can be connected to the second gate driver 510b, for transmitting the scanning signal output by the second gate driver 510b to the pixel unit 530 in the second display area.

[0095] In the display panel shown in FIG15 , when using a half-screen display, for example, the first display area is on and the second display area is off. Taking the first row of scan signal lines 511 as an example, the first segment 511a, driven by the first gate driver 510a, transmits scan signals to the pixel units connected to the first segment 511a. Since the pixel units connected to the second segment 511b are disconnected from the first segment 511a, the load connected to the first row of scan signal lines 511 for the first gate driver is reduced by half compared to the situation shown in FIG5 . With this significantly reduced load, the power consumption of the pixel units connected to the first row of scan signal lines 511 can be minimized. In other words, using the technical solution of FIG15 , when the first display area is on and the second display area is off, the second DDIC 520-2 in the second display area can enter a deep sleep state, thereby minimizing power consumption.

[0096] Correspondingly, if the first display area is off and the second display area is in a half-screen display state, the first DDIC 520 - 1 in the first display area can also enter a deep sleep state to minimize power consumption.

[0097] FIG16 shows a schematic diagram of a display panel using a wiring array and a segmented arrangement of scanning signal lines. The technical effects of this embodiment can be seen in the foregoing description and will not be described in detail here. It should be noted that the number of rows of pixel units shown in FIG16 is only an example, and the positions of the pixel units are also examples. It should be understood that multiple rows of pixel units and scanning signal lines (not shown) should also be provided below the wiring array.

[0098] The present application also provides a folding screen, comprising any display panel as described in the above embodiments.

[0099] The display panel is applied to a folding screen device, which includes a first display driver chip, a second display driver chip and a first gate driver; the first display driver chip and the second display driver chip are arranged along a first side of the folding screen device, the first side is a side perpendicular to the rotating axis of the folding screen device, the first side and the second side of the folding screen device are adjacent sides, and the first side is longer than the second side; the first display driver chip is located on the first side of the rotating axis, and is used to output data signals to a first display area of ​​the display panel located on the first side; the second display driver chip is located on the second side of the rotating axis, and is used to output data signals to a second display area of ​​the display panel located on the second side; the first gate driver is arranged along the second side; the display panel includes: a plurality of scan signal lines, the plurality of scan signal lines are connected to the first gate driver, and the plurality of scan signal lines are perpendicular to the rotating axis; the display panel also includes: a first wiring array; the first end of the first wiring array is connected to the first display driver chip, and the second end of the first wiring array is connected to the data signal line of a first folding sub-area in the first display area, and the first folding sub-area is a sub-area in the first display area that bends when the folding screen device is folded.

[0100] In some embodiments, the first trace array includes a plurality of first traces, the plurality of first traces do not intersect with each other, and each first trace is in the shape of a ring with an opening.

[0101] In some embodiments, the first routing line includes a first sub-edge, a second sub-edge, and a third sub-edge; the two ends of the second sub-edge are respectively connected to the first end of the first sub-edge and the first end of the third sub-edge; the second end of the first sub-edge is connected to the first display driver chip, and the second end of the third sub-edge is connected to the data signal line of the first folding sub-area.

[0102] In some embodiments, the first sub-side and the second sub-side are straight lines, the second sub-side is arc-shaped, and the concave direction of the second sub-side is opposite to the direction of the opening.

[0103] In some embodiments, the first sub-side, the second sub-side, and the third sub-side are all straight lines, and the first sub-side is perpendicular to the second sub-side, and the third sub-side is perpendicular to the second sub-side.

[0104] In some embodiments, the first trace is U-shaped.

[0105] In some embodiments, the first trace is concave-shaped.

[0106] In some embodiments, the display panel also includes: a second wiring array; the first end of the second wiring array is connected to the second display driver chip, the second end of the second wiring array is connected to the data signal line of the second folding sub-area in the second display area, and the second folding sub-area is a sub-area in the second display area that bends when the folding screen device is folded.

[0107] In some embodiments, the second routing array includes a plurality of second routing lines, the plurality of second routing lines do not intersect with each other, and the second routing lines have the same shape as the first routing lines.

[0108] In some embodiments, the first display area also includes a first edge sub-area, which is a sub-area in the first display area away from the rotation axis and close to the second side; the display panel also includes: a third wiring array; the first end of the third wiring array is connected to the first display driver chip, and the second end of the third wiring array is connected to the data signal line of the first edge sub-area; the third wiring array includes multiple third wirings, and the multiple third wirings do not intersect with each other.

[0109] In some embodiments, the third trace has the same shape as the first trace; or, the third trace is a straight line.

[0110] In some embodiments, the second display area also includes a second edge sub-area, which is a sub-area in the second display area away from the rotation axis and close to the second side; the display panel also includes: a fourth wiring array; the first end of the fourth wiring array is connected to the second display driver chip, and the second end of the fourth wiring array is connected to the data signal line of the second edge sub-area; the fourth wiring array includes multiple fourth wirings, and the multiple fourth wirings have the same shape and do not intersect with each other.

[0111] In some embodiments, the fourth trace has the same shape as the second trace; or, the fourth trace is a straight line.

[0112] In some embodiments, the folding screen device also includes a second gate driver, the first gate driver and the second gate driver are arranged along different second sides respectively, the first row of scan signal lines is a scan signal line of any row among multiple scan signal lines, the first row of scan signal lines includes a first segment and a second segment, the first segment is located in the first display area, the first segment is connected to the first gate driver, the second segment is located in the second display area, the second segment is connected to the second gate driver, and the first segment and the second segment are not connected.

[0113] An embodiment of the present application also provides a folding screen device, comprising any display panel or folding screen as described in the above embodiments.

[0114] The above describes in detail the examples of the display panels provided by this application. It is understood that in order to achieve the above functions, the corresponding folding screen device includes the corresponding hardware structure for performing each function. The principles and beneficial effects achieved by the above display panel, folding screen, and folding screen device can be found in the description of the above display device embodiments and will not be repeated here.

[0115] In the several embodiments provided in this application, it should be understood that the disclosed structures can be implemented in other ways. For example, the structural embodiments described above are merely illustrative. For example, the division of modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection of devices or units through some interfaces, which can be electrical, mechanical or other forms.

[0116] Units described as separate components may or may not be physically separate, and components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0117] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A display panel, applied to a folding screen device, characterized in that: The folding screen device includes a first display driver chip, a second display driver chip and a first gate driver; The first display driver chip and the second display driver chip are arranged along a first side of the folding screen device, the first side is a side perpendicular to the rotation axis of the folding screen device, the first side and the second side of the folding screen device are adjacent sides, and the first side is longer than the second side; The first display driving chip is located at a first side of the rotating shaft, and is used to output a data signal to a first display area of ​​the display panel located at the first side; The second display driving chip is located on the second side of the rotating shaft, and is used to output a data signal to a second display area of ​​the display panel located on the second side; The first gate driver is arranged along the second side; The display panel comprises: a plurality of scanning signal lines, the plurality of scanning signal lines are connected to the first gate driver, and the plurality of scanning signal lines are perpendicular to the rotation axis; The display panel further includes: a first wiring array; The first end of the first wiring array is connected to the first display driver chip, and the second end of the first wiring array is connected to the data signal line of the first folding sub-area in the first display area. The first folding sub-area is a sub-area in the first display area that bends when the folding screen device is folded.

2. The display panel according to claim 1, characterized in that: The first wiring array includes a plurality of first wirings, the plurality of first wirings do not intersect with each other, and each of the first wirings is in the shape of a ring with an opening.

3. The display panel according to claim 2, characterized in that: The first routing line includes a first sub-edge, a second sub-edge and a third sub-edge; Two ends of the second sub-edge are respectively connected to the first end of the first sub-edge and the first end of the third sub-edge; The second end of the first sub-side is connected to the first display driving chip, and the second end of the third sub-side is connected to the data signal line of the first folding sub-region.

4. The display panel according to claim 3, characterized in that: The first sub-side and the second sub-side are straight lines, the second sub-side is arc-shaped, and a concave direction of the second sub-side is opposite to a direction of the opening.

5. The display panel according to claim 3, characterized in that: The first sub-side, the second sub-side and the third sub-side are all straight lines, and the first sub-side is perpendicular to the second sub-side, and the third sub-side is perpendicular to the second sub-side.

6. The display panel according to claim 3, characterized in that: The first wiring is U-shaped.

7. The display panel according to claim 3, characterized in that: The first wiring is in a concave shape.

8. The display panel according to claim 2, characterized in that: The display panel further includes: a second wiring array; The first end of the second wiring array is connected to the second display driver chip, and the second end of the second wiring array is connected to the data signal line of the second folding sub-area in the second display area. The second folding sub-area is a sub-area in the second display area that bends when the folding screen device is folded.

9. The display panel according to claim 8, characterized in that: The second routing array includes a plurality of second routings, the plurality of second routings do not intersect each other, and the second routings and the first routings have the same shape.

10. The display panel according to any one of claims 1 to 9, characterized in that: The first display area further includes a first edge sub-area, which is a sub-area of ​​the first display area away from the rotation axis and close to the second side; The display panel further comprises: a third wiring array; A first end of the third wiring array is connected to the first display driver chip, and a second end of the third wiring array is connected to a data signal line of the first edge sub-region; The third routing array includes a plurality of third routings, and the plurality of third routings do not intersect with each other.

11. The display panel according to claim 10, characterized in that: The third routing line has the same shape as the first routing line; or the third routing line is in a straight line shape.

12. The display panel according to any one of claims 1 to 11, characterized in that: The second display area further includes a second edge sub-area, and the second edge sub-area is a sub-area of ​​the second display area away from the rotation axis and close to the second side; The display panel further includes: a fourth wiring array; A first end of the fourth wiring array is connected to the second display driver chip, and a second end of the fourth wiring array is connected to a data signal line of the second edge sub-region; The fourth routing array includes a plurality of fourth routing lines, and the plurality of fourth routing lines have the same shape and do not intersect with each other.

13. The display panel according to claim 12, characterized in that: The fourth routing line has the same shape as the second routing line; or, the fourth routing line has a straight line shape.

14. The display panel according to any one of claims 1 to 13, characterized in that: The folding screen device also includes a second gate driver, the first gate driver and the second gate driver are respectively arranged along different second sides, the first row of scan signal lines is a scan signal line of any row of the multiple scan signal lines, the first row of scan signal lines includes a first segment and a second segment, the first segment is located in the first display area, the first segment is connected to the first gate driver, the second segment is located in the second display area, the second segment is connected to the second gate driver, and the first segment and the second segment are not connected.

15. A folding screen, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 14.

16. A folding screen device, characterized in that: include: A display panel as described in any one of claims 1 to 14, or a folding screen as described in claim 15.

Images