Display panel, folding screen and folding screen equipment

Abstract

The invention relates to the technical field of display, and provides a display panel, a folding screen and folding screen equipment. The display Mina version is applied to the folding screen equipment, a first display driving chip and a second display driving chip of the folding screen equipment are arranged along a longer first side of the folding screen equipment, the first side is perpendicular to a rotating shaft of the folding screen equipment, and the first side is adjacent to a shorter second side of the folding screen equipment; a first gate driver of the folding screen device is arranged along the second edge; the display panel comprises a plurality of scanning signal lines and a first routing array, and the plurality of scanning signal lines are connected with the first gate driver and are perpendicular to the rotating shaft; a first end of the first routing array is connected with the first display driving chip, and a second end of the first routing array is connected with a data signal line of a first folding sub-area in the first display area. According to the display panel, the charging time of the pixel units can be prolonged, and the wiring between the scanning signal line and the DDIC can avoid the folding area.

Description

Technical Field

[0001] The present application relates to the technical field of display screens, and particularly relates to a display panel, a folding screen, and a folding screen device. Background Art

[0002] As the size of the screen becomes larger and larger, the number of pixel units in the display panel increases, and correspondingly, the number of rows and columns in which the pixel units are arranged also increases.

[0003] In a common display panel, the gate driver is arranged along the long side of the display panel, and the scanning signal lines 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 lines and the scanning signal lines are perpendicular to each other to realize the driving of each pixel unit. When the scanning signal lines can be arranged parallel to the long side, as the screen size becomes larger and larger, the number of scanning signal lines will increase. Moreover, with the demand for a high refresh rate of the screen, the time for refreshing each frame of the image becomes shorter and shorter, and the charging time of each scanning signal line for the pixel units in a connected column will correspondingly become shorter and shorter.

[0004] The gradually shortened charging time poses higher and higher requirements on the process of the display panel, challenging the industry limit, with too high technical difficulty and being not conducive to cost saving. Summary of the Invention

[0005] The present application provides a display panel, a folding screen, and a folding screen device, which can increase the charging time of pixel units and can also avoid the routing between the scanning signal lines and the DDIC from passing through the folding area.

[0006] In a first aspect, a display panel is provided, which is applied to a folding screen device. The folding screen device includes a first display driving chip, a second display driving chip, and a first gate driver; the first display driving chip and the second display driving 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 a 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 on a first side of the rotation 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 driving chip is located on a second side of the rotation 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 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 routing array; a first end of the first routing array is connected to the first display driving chip, and a second end of the first routing array is connected to data signal lines in a first folding sub-region in the first display area, and the first folding sub-region is a sub-region in the first display area that is bent when the folding screen device is folded.

[0007] The first side mentioned above is the long side of the folding screen device, and the second side is the short side of the folding screen device. Arranging the first gate driver along the short side can reduce the number of scanning signal lines, thereby increasing the charging duration of each row of pixel units, reducing the process requirements of the display panel, and facilitating cost reduction. At the same time, by arranging a first wiring array in the display panel to connect the DDIC and the data signal lines in the first folding sub-region, the folding region can be avoided to meet the folding requirements.

[0008] In some possible implementation manners, the first wiring array includes a plurality of first wirings, the plurality of first wirings do not intersect each other, and each first wiring is a ring shape with an opening.

[0009] Using a ring shape with an opening to connect the DDIC and the data signal lines in the folding sub-region can realize the connection of the data signals between the DDIC and the folding sub-region, avoid the folding region, and meet the folding requirements.

[0010] In some possible implementation manners, the first wiring includes a first sub-side, a second sub-side, and a third sub-side; both ends of the second sub-side are respectively connected to the first end of the first sub-side and the first end of the third sub-side; 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 lines in the first folding sub-region.

[0011] It should be noted that these three sub-sides can be an integrated structure, which is convenient for processing.

[0012] In some possible implementation manners, the first sub-side and the second sub-side are linear, the second sub-side is arc-shaped, and the concave direction of the second sub-side is opposite to the direction of the opening.

[0013] In some possible implementation manners, the first sub-side, the second sub-side, and the third sub-side are all linear, the first sub-side and the second sub-side are perpendicular, and the third sub-side and the second sub-side are perpendicular.

[0014] The first wirings with different shapes can meet the requirements of layout and wiring in different display panels and can be flexibly selected according to needs. A form with small wiring corners can also be adopted to take into account signal integrity.

[0015] In some possible implementation manners, the first wiring is U-shaped.

[0016] That is to say, the first wiring includes a first sub-side, a second sub-side, and a third sub-side, the first sub-side and the third sub-side are parallel, the second sub-side is arc-shaped, and the concave direction of the arc is opposite to the direction of the opening of the ring.

[0017] In some possible implementation manners, the first wiring is concave-shaped.

[0018] That is, the first sub-edge, the second sub-edge, and the third sub-edge are all linear, the first sub-edge is perpendicular to the second sub-edge, and the third sub-edge is perpendicular to the second sub-edge.

[0019] The first trace of different shapes can meet the requirements of layout and wiring in different display panels and can be flexibly selected according to needs. It is also possible to adopt a form with small trace corners to take into account signal integrity.

[0020] In some possible implementation manners, the display panel further includes: a second trace array; a first end of the second trace array is connected to the second display driving chip, a second end of the second trace array is connected to a data signal line in a second folding sub-region in the second display region, and the second folding sub-region is a sub-region that is bent in the second display region when the folding screen device is folded.

[0021] In some possible implementation manners, the second trace array includes a plurality of second traces, the plurality of second traces do not intersect each other, and the shapes of the second traces are the same as those of the first traces.

[0022] In some possible implementation manners, the first display region further includes a first edge sub-region, and the first edge sub-region is a sub-region in the first display region that is far from the rotation axis and close to the second side; the display panel further includes: a third trace array; a first end of the third trace array is connected to the first display driving chip, a second end of the third trace array is connected to a data signal line in the first edge sub-region; the third trace array includes a plurality of third traces, and the plurality of third traces do not intersect each other.

[0023] In some possible implementation manners, the shapes of the third traces are the same as those of the first traces; or, the shapes of the third traces are linear.

[0024] When the third traces adopt the same shape as the first traces, different shapes can meet the requirements of layout and wiring in different display panels and can be flexibly selected according to needs. It is also possible to adopt a form with small trace corners to take into account signal integrity.

[0025] In some possible implementation manners, the second display region further includes a second edge sub-region, and the second edge sub-region is a sub-region in the second display region that is far from the rotation axis and close to the second side; the display panel further includes: a fourth trace array; a first end of the fourth trace array is connected to the second display driving chip, a second end of the fourth trace array is connected to a data signal line in the second edge sub-region; the fourth trace array includes a plurality of fourth traces, and the shapes of the plurality of fourth traces are the same and do not intersect each other.

[0026] In some possible implementation manners, the shapes of the fourth traces are the same as those of the second traces; or, the shapes of the fourth traces are linear.

[0027] When the fourth trace adopts the same shape as the first trace, different shapes can meet the requirements of layout and routing in different display panels, and can be flexibly selected according to needs. The form with small trace corners can also be adopted to balance signal integrity.

[0028] In some possible implementation manners, the folding screen device further 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 among a plurality of 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 and is connected to the first gate driver. The second segment is located in the second display area and is connected to the second gate driver. The first segment and the second segment are not connected.

[0029] When using half-screen display, for example, the first display area is displayed and the second display area is turned off. Taking the first row of scan signal lines as an example, under the drive of the first gate driver, the first segment transmits scan signals to the pixel units connected to the first segment. Since the pixel units connected to the second segment are disconnected from the first segment, for the first gate driver, the load connected to the first row of scan signal lines can be reduced by half compared with the traditional case of penetrating the entire screen. In the case of greatly reduced load, the power consumption of the pixel units connected to the first row of scan signal lines can be reduced to the greatest extent. That is to say, adopting this solution, when the first display area is displayed and the second display area is turned off, the second display driver chip in the second display area can enter the deep sleep state, achieving the effect of reducing power consumption to the greatest extent.

[0030] Correspondingly, if it is in the half-screen display state where the first display area is turned off and the second display area is displayed, the first display driver chip in the first display area can also enter the deep sleep state, reducing power consumption to the greatest extent.

[0031] In a second aspect, an embodiment of the present application provides a folding screen, including any one of the display panels in the technical solutions described in the first aspect.

[0032] In a third aspect, an electronic device is provided. The electronic device includes any one of the display panels in the technical solutions described in the first aspect.

[0033] In a fourth aspect, an electronic device is provided. The electronic device includes any one of the folding screens in the technical solutions described in the second aspect.

[0034] In some possible implementation manners, the electronic device is a folding screen device.

[0035] By arranging a first trace array in the display panel to connect the DDIC and the data signal lines in the first folding sub-region, the folding area can be avoided, meeting the folding requirements. Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of a terminal device 100 provided by an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the interface of a foldable screen device provided by an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of the interface of a foldable screen device provided by an embodiment of the present application;

[0039] Figure 4 is a schematic layout diagram of a gate driver and a DDIC in a display panel provided by an embodiment of the present application;

[0040] Figure 5 is another schematic layout diagram of a gate driver and a DDIC in a display panel provided by an embodiment of the present application;

[0041] Figure 6 is a schematic layout diagram of a routing array with a data signal line as a reference in a display panel provided by an embodiment of the present application;

[0042] Figure 7 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0043] Figure 8 is a schematic diagram of different routing shapes in a routing array provided by an embodiment of the present application;

[0044] Figure 9 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0045] Figure 10 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0046] Figure 11 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0047] Figure 12 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0048] Figure 13 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0049] Figure 14 is another schematic layout diagram of a routing array in a display panel provided by an embodiment of the present application;

[0050] Figure 15 It is a schematic diagram of a scan signal line in a display panel provided by an embodiment of the present application;

[0051] Figure 16 It is a schematic diagram of a scan signal line and a routing array in a display panel provided by an embodiment of the present application.

[0052] Reference numerals in the accompanying drawings:

[0053] In the prior art:

[0054] Display panel: 200;

[0055] Left half screen: 210;

[0056] Right half screen: 220;

[0057] Rotating shaft: 230;

[0058] Folding line: 240;

[0059] Folding area: 250;

[0060] DDIC: 260;

[0061] Data signal line 261;

[0062] Gate driver: 270;

[0063] Scan signal line: 271;

[0064] Pixel unit: 280;

[0065] In the present application:

[0066] Display panel: 500;

[0067] First gate driver: 510a; Second gate driver: 510b; Scan signal line: 511;

[0068] First section: 511a;

[0069] Second section: 511b;

[0070] DDIC: 520;

[0071] First DDIC: 521-1;

[0072] Second DDIC: 521-2;

[0073] Data signal line: 521;

[0074] Fan-out routing: 522;

[0075] Pixel unit: 530;

[0076] Folding line: 540;

[0077] Folding area: 550;

[0078] First folding sub - area: 551; Second folding sub - area: 552; First edge sub - area: 553; Second edge sub - area: 554; First wiring array: 560;

[0079] First wiring: 561;

[0080] First sub - edge: 561A;

[0081] Second sub - edge: 561B;

[0082] Third sub - edge: 561C;

[0083] First via: 562;

[0084] Second wiring array: 570;

[0085] Second wiring: 571;

[0086] Second via: 572;

[0087] Third wiring array: 580;

[0088] Third wiring: 581;

[0089] Fourth wiring array: 590;

[0090] Fourth wiring: 591. Detailed implementation manners

[0091] Next, the technical solutions in the embodiments of the present application will be described in conjunction with the accompanying drawings in the embodiments of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B can mean A or B; herein, "and / or" is only 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 simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0092] Hereinafter, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features.

[0093] The display panel provided by 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, personal digital assistants (PDAs), etc. The embodiments of the present application do not impose any restrictions on the specific types of terminal devices.

[0094] Exemplarily, Figure 1 FIG. 5 is a schematic structural diagram of a terminal device 100 provided by 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, a headphone interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display screen 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, a barometric 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.

[0095] It can be understood that the structure schematically shown in the embodiments of the present application does 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 in the figure, or combine certain components, or split certain components, or have different component arrangements. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0096] It can be understood that the interface connection relationships between the modules schematically shown in the embodiments of the present application are only illustrative and do not constitute a structural limitation on the terminal device 100. In other embodiments of the present application, the terminal device 100 may also adopt different interface connection methods as described in the above embodiments, or a combination of multiple interface connection methods.

[0097] It should be noted that the display panel provided in the embodiments of the present application is applied to a terminal device with a folding screen, which is hereinafter simply referred to as a folding screen device. The display panel, the copper foil and the foam located below the display panel, and the polarizer, the touch layer, the optical adhesive and the cover plate located above the display panel are integrally arranged as the screen of the folding screen device. The screen on the folding screen device can be bent to realize the folding function of the folding screen device.

[0098] Generally, a folding screen device has a screen with a relatively large size. A rotating shaft is also provided on the folding screen device. The rotating shaft is arranged below the screen. Although the screens on both sides of the rotating shaft are an integrated complete screen, functionally they can be regarded as two half-screens, which are respectively called the left half-screen and the right half-screen of the folding screen device according to the holding direction, or the upper half-screen and the lower half-screen. These two half-screens can display the interface of the same application program together, such as Figure 2 shown in Figure (a) in Figure 2 ; they can also display the interfaces of different application programs respectively, such as Figure 3 shown in Figure (b) in Figure 3 Figure (a) in Figure 3 is a schematic diagram of the form of the folding screen device in the semi-folded state between the folded state and the closed state. As can be seen from the figure, 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 3 Figure (b) in

[0099] Generally, 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 a side parallel to the rotating shaft 230, such as Figure 3 shown in Figure (b) in

[0100] InFigure 3 In figure (b) thereof, the display panel 200 has a display area. The display panel 200 further includes a gate driver on array (GOA) 270, scan signal lines 271, and a plurality of pixel units 280. The plurality of pixel units 280 are located in the display area of the display panel 200 and are arranged in an array. Among them, the gate driver and the scan signal lines can 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 through one scan signal line 271 ( Figure 4 the scan signal lines shown in include G1, G2, G3, G4, G5, G6, G7, G8, G9, and G10); the pixel units 280 in the same row are further connected to the DDIC 260 through one data signal line 261 ( Figure 4 the data signal lines shown in include S1, S2, S3, S4, S5, S6, and S7). When the display panel 200 is operating, the gate driver 270 sequentially outputs scan signals to each of the scan signal lines 271, thereby performing a progressive scan of the plurality of pixel units 280. When the gate driver 270 outputs a scan signal, the DDIC 260 is used to output data signals to each of the data signal lines 261. Based on this, when a scan signal is input to one scan signal line 271 and a data signal is input to one data signal line 261, the pixel unit 280 connected to this scan signal line 271 and this data signal line 261 can operate and emit light. When the gate driver 270 has scanned all the pixel units 280 of the display panel 200 row by row once, the display panel 200 displays one frame of image. When the folding screen device is operating, the display panel 200 can display images at a certain refresh rate. The refresh rate refers to the number of frames of images displayed by the display panel 200 per second.

[0101] As the size of the screen is getting larger and larger, the number of pixel units 280 in the display panel 200 is increasing, and the number of rows and columns in which the pixel units are arranged is also increasing. 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 lines 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 lines 261 and the scan signal lines 271 are perpendicular to each other to realize the driving of each pixel unit 280. When the scan signal lines 271 can be arranged parallel to the long side, as the screen size is getting larger and larger, the number of scan signal lines 271 will be increasing. Moreover, with the demand for a high refresh rate of the screen, the time for refreshing each frame of image is getting shorter and shorter, and the charging time for each scan signal line 271 to the pixel units 280 in a connected column will be correspondingly shorter.

[0102] For example, in a display panel with a pixel count of 2344 (RGB) × 2156 and a refresh rate of 120 Hz, the charging time for each row of pixel units is approximately 3.8 microseconds (us). In a display panel with a pixel count of 2214 (RGB) × 3250 and a refresh rate of 120 Hz, the charging time for each row of pixel units is approximately 2.51 microseconds (us). When the refresh rate remains unchanged and the number of scanned rows increases from 2156 to 3250, the charging time for each row of pixel units shortens from 3.8 us to about 2.51 us. The gradually shortening charging time places higher and higher requirements on the process of the display panel 200, challenging the industry limit, with excessive technical difficulty and being unfavorable for cost savings.

[0103] Based on this, the embodiments of the present application provide a display panel, which can be specifically referred to Figure 5 as shown. The display panel 500 can be applied to the folding screen device 100. In Figure 5 it, 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 scanning signal lines 511 are arranged parallel to the long side. In this way, when the size and resolution of the display panel 500 remain unchanged, the number of scanning signal lines 511 is reduced compared to Figure 4 the case where the gate driver is arranged along the long side, increasing the charging time for each row of pixel units 530. It should be noted that Figure 4 and Figure 5 the number of pixel units 530, the number of rows and columns shown in are exemplary, and the actual number of pixel units 530, the number of rows and columns is more than Figure 4 and Figure 5 shown, and the specific values are related to the size and resolution of the display panel, which are not limited in the embodiments of the present application.

[0104] When the first gate driver 510a is arranged along the short side, it can extend the charging time for each row of pixel units 530 and reduce the process requirements for the display panel. In this case, the DDIC 520 is arranged along the long side accordingly. Specifically, the folding screen device can use multiple cascaded DDICs to achieve data signal transmission, for example Figure 5 as shown. Figure 5 Taking the example of using two DDICs 520 to respectively transmit data signals to the pixel units of the left half screen and the right half screen is shown. In fact, more DDIC solutions can also be used for the left half screen or the right half screen, which are not limited in the embodiments of the present application. Taking the left half screen as an example, if the fan-out wiring 522 between the data signal line 521 and the DDIC adopts Figure 5The form of the fan-out routing shown in []. If the fan-out routing method is adopted, the space occupied by the routing is relatively large, and the fan-out routing needs to be implemented on the printed circuit board, which cannot meet the bending requirements of the folding screen device. That is to say, the fan-out routing cannot be implemented in the folding area, such as Figure 5 The routing in the fan-out area connected to S5 and S6 in [].

[0105] Based on this, in the display panel provided by the embodiments of the present application, it includes a fan-out in the array area (fanout in array area, FIAA) provided inside, which can be simply referred to as a routing array in the present application, and is used to realize the connection between the data signal line 521 and the DDIC 520 in the folding area. Specifically, taking the example that the first routing array 560 is provided in the left half screen of the display panel 500, the first routing array 560 includes a plurality of first routings 561 with the same or similar shapes. The shape of the first routing 561 can be an annular shape with an opening. Figure 6 Figures (a) and (b) in [] show an example of a square ring with one side of the first routing 561 being open. An interval is set between each first routing 561, and they do not intersect each other. Among them, the first end of each first routing 561 is connected to a pin of the first DDIC 520-1, and the second end of each first routing 561 is respectively connected to a data signal line in the first folding sub-region 551 of the left half screen (the first display area). It should be noted that the connection method between the first routing 561 and the data signal line 521 can be coupling or welding.

[0106] By arranging the first routing array in the display panel to connect the DDIC and the data signal line in the first folding sub-region, it can avoid the folding area and meet the folding requirements.

[0107] Optionally, a second routing array 570 similar to the first routing array 560 can also be provided in the right half screen of the display panel 500. Optionally, the second routing array 570 includes a plurality of second routings 571 with the same or similar shapes. The shape of the second routing 571 can be the same as, different from, or similar to the shape of the first routing 561. Optionally, when the shape of the second routing 571 is the same as the shape of the first routing 561, the second routing array 570 and the first routing array 560 can be symmetrically arranged, which is convenient for design and processing. Figure 6Figure (b) in [[ID=]] is shown taking the case where the shapes of the second traces 571 and the first traces 561 are the same. An interval is also provided between each pair of second traces 571, and they do not intersect each other. The first end of each second trace 571 is connected to a pin of the second DDIC 520-2, and the second end of each second trace 571 is respectively connected to a data signal line in the second folding sub-region 552 of the right half screen (second display region). It should be noted that the connection manner between the second trace 571 and the data signal line 521 can be coupling or welding.

[0108] The above Figure 5 and Figure 6 The distribution and quantity of the data signal lines 521 shown in [[ID=]] are only examples. In fact, the quantity of the data signal lines 521 is much larger than that shown in the figure, and the arrangement is also denser. Correspondingly, the quantity of the first traces 561 in the first trace array 560 and the quantity of the second traces 571 in the second trace array 570 are also larger, and the arrangement is more dense. Figure 7 FIG. is a schematic diagram of the first trace array 560 and the second trace array 570 with the data signal lines 521 hidden. It should be noted that Figure 7 The quantity of the first traces 561 in [[ID=]] and the quantity of the second traces 571 in the second trace array 570 are also only examples, aiming to illustrate the arrangement situation of the actual first traces 561 and second traces 571.

[0109] It should be noted that in the embodiments of the present application Figure 6 and other drawings, showing the DDIC 520-1 and DDIC 520-2 outside the region of the display panel is for the convenience of showing the distribution manner of the trace array. In the actual structure, the DDIC 520-1 and DDIC 520-2 are located below the display panel (in the direction opposite to the display screen). That is to say, in the perspective view of the display panel, the DDIC 520-1 and DDIC 520-2 are located within 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 in the entire region of the display panel and are bent at the edge towards below the display panel to connect to the DDIC 520-1 and DDIC 520-2.

[0110] Optionally, Figure 7 Figure (a) in [[ID=]] shows an example where the first trace array 560 adopts same-layer wiring. That is to say, in the first trace array, a plurality of first traces 561 do not intersect each other, and the projections of the plurality of first traces in the direction of the plane of the display panel do not intersect each other.

[0111] Optionally, the first trace array 560 can also be layered for wiring. For details, reference can be made to Figure 7An example of figure (b) therein. Each first trace 561 passes through a first via 562 and is distributed on different layers. Taking the flexible printed circuit board structure with two wiring layers as an example where the first traces are distributed in an array, a part of the first traces 561 is distributed on the first layer of the flexible printed circuit board structure, and another part of the first traces 561 is arranged on the second layer of the flexible printed circuit board structure through the first vias 562 penetrating between the first layer and the second layer of the flexible printed circuit board structure, thereby realizing distributed layer wiring. In this case, the projections of multiple first traces in the plane direction of the display panel cross each other, which can make the size difference of each first trace smaller, facilitating reducing the difference in data signals transmitted by multiple first traces, and can also reduce the layout area of the entire first trace array 560.

[0112] Optionally, the position of the above-mentioned first via 562 is only an example. In fact, the position of 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.

[0113] Optionally, the second traces 571 in the above-mentioned second trace array 570 can also refer to the form of the first traces 561 and be distributed on different layers through the second vias 572, which will not be elaborated here.

[0114] It should be noted that the above Figure 6 The square ring with one side open mentioned therein can also be described as a "concave" shape. Taking the square ring with the first trace 561 as the opening as an example, it includes a first sub-side 561A, a second sub-side 561B, and a third sub-side 561C. Specifically, reference can be made to Figure 8 as shown in figure (a) therein. 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 driving 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-region 551.

[0115] Optionally, the second sub-side 561B and the first sub-side 561A can be perpendicular to each other or nearly perpendicular, for example, the included angle is about 90 degrees ± 10. The second sub-side 561B and the third sub-side 561C can be perpendicular to each other or nearly perpendicular, for example, the included angle is about 90 degrees ± 10. Figure 8 Figure (a) therein shows an example of being perpendicular to each other.

[0116] Optionally, reference can also be made to Figure 9As shown, the DDIC occupies the display area of the display panel. In this case, one end of the data signal line connected to the DDIC needs to avoid the space where the DDIC is arranged, so as to facilitate the connection between the data signal line in the middle sub-region of the first display area and the DDIC. That is to say, no data signal line needs to be arranged below the position where the DDIC is arranged, and the data signal line cannot be arranged to a more edge position of the screen. Taking Figure 9 as an example, no data signal line needs to be arranged in the areas on both sides of the DDIC, and the structure where the data signal lines are distributed can be connected to the data signal lines without bending. Although the display area is reduced, it is convenient for installation.

[0117] In the case where the proportion of the display area is getting larger and larger, the endpoints of the data signal lines need to extend closer to the screen edge to obtain a larger display area. When the DDIC is distributed along the screen edge, in order to facilitate the connection between the DDIC and the data signal lines, the first trace does not need to avoid space for the DDIC, and the existing area can be fully utilized to arrange the data signal lines, increasing the area of the display area, such as Figure 6 and Figure 7 shown.

[0118] The shape of the above-mentioned first trace 561 is only an example. In fact, the shape of the first trace 561 can also refer to the shape shown in other figures in Figure 8 . Optionally, the included 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 can also be chamfered, such as the chamfered corner setting shown in figure (b) in Figure 8 .

[0119] Optionally, the above-mentioned second sub-edge 561B can also be arc-shaped, and the concave direction and the opening direction of the arc are opposite, such as shown in figure (c) in Figure 8 . When the second sub-edge 561B is arc-shaped, the ring of the opening can also be described as a "U" shape. The first sub-edge 561A and the third sub-edge 561C in this U shape can be of equal length, or the first sub-edge 561A can be shorter or longer than the third sub-edge 561C, as long as the process error is satisfied to ensure normal connection.

[0120] Optionally, the shape of the first trace can also refer to that shown in figure (d) in Figure 8 , which is a ring with one side open.

[0121] First traces with different shapes can meet the requirements of layout and wiring in different display panels and can be flexibly selected according to needs. Using forms with small trace corners such as chamfers or arcs can take into account signal integrity.

[0122] Correspondingly, using the above-mentioned Figure 8The specific shapes of the first trace array and the second trace array obtained from the shapes of the first traces shown in FIGS. (a) to (d) can be seen in Figure 7 、 Figure 10 、 Figure 11 and Figure 12 as shown.

[0123] The above Figure 8 shown shapes of the first traces can all achieve double-layer distribution, that is, each first trace is distributed on two layers through vias, which is convenient for arrangement and can reduce the layout area of the first trace array.

[0124] For ease of description, the sub-region close to the short side of the screen is called the edge sub-region, specifically as shown in FIG. (a) in Figure 13 The sub-region close to the short side of the screen in the first display area is the first edge sub-region 553, and the sub-region close to the other short side of the screen in the second display area is the second edge sub-region 554. It should be noted that the sub-region between the edge sub-region and the folding sub-region can be called the middle sub-region.

[0125] Usually in the corner area of the screen, that is, in the edge sub-region, a fan-out routing method can be adopted between the data signal line and the DDIC, such as Figure 13 FIG. (b) in. In some embodiments, in the edge sub-region, an annular routing array with openings can also be implemented inside the display panel, such as Figure 13 shown in FIG. (c) in. Figure 13 In FIG. (c) in, taking the lower left corner of the screen as an example, a third trace array 580 formed by multiple third traces 581 as a square ring with an opening is shown. The first end of the third trace array 580 is connected to the first display driving chip 520-1, and the second end of the third trace array 580 is connected to the data signal line 521 in the first edge sub-region 553. These multiple third traces 581 have the same or similar shapes, different sizes and do not intersect each other. Such a routing method can increase the display area compared with the fan-out routing. The specific principle is as described in the previous text and will not be elaborated here.

[0126] Optionally, the area of the lower right corner of the screen can also be exemplified by a fourth trace array 590 formed by multiple fourth traces 591 as a square ring with an opening. The first end of the fourth trace array 590 is connected to the second display driving chip 520-2, and the second end of the fourth trace array 590 is connected to the data signal line 521 in the second edge sub-region 554. These multiple fourth traces 590 have the same or similar shapes, different sizes and do not intersect each other. Such a routing method can increase the display area compared with the traditional fan-out routing. The specific principle is as described in the previous text and will not be elaborated here.

[0127] It should be noted that the shapes of the above-mentioned third trace 581 and fourth trace 591 may be the same or different. The shapes of the third trace 581 and fourth trace 591 may be the same as or different from the shapes of the first trace 561 and second trace 571, or may be partially the same and partially different.

[0128] Figure 14 Taking the third trace 581 in the third trace array 580 and the fourth trace 591 in the fourth trace array 590 as an example of a square ring with an opening is shown. The trace shapes of the third trace 581 and fourth trace 591 can refer to the description of the first trace 561 and second trace 571 in the previous text, which will not be elaborated here. Optionally, the shapes of the first trace 561, second trace 571, third trace 581, and fourth trace 591 may also all be different, which will not be elaborated here either.

[0129] Based on the above embodiments, common scan signal lines are metal lines arranged row by row, usually running through the left and right of the screen. For example Figure 5 such as G1 - G7 shown. In the embodiments of the present application, each row of scan signal lines is divided into two segments and separately arranged, and are respectively connected to different gate drivers. That is, in a foldable screen device, a second gate driver may 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 of any row as an example, the first row of scan signal lines 511 may include a first segment 511a arranged in the first display area and a second segment 511b arranged in the second display area. Although the first segment 511a and the second segment 511b are called the first row of scan signal lines, they are not two parts with an overall structure, but two unconnected scan signal lines. Only when the screen is in full - screen display, the two segments of the same row of scan signal lines can be used to output scan signals to the pixel units of the same row simultaneously. Specifically, one end of the first segment 511a can be connected to the first gate driver 510a for conducting the scan signal output by the first gate driver 510a to the pixel units 530 in the first display area; one end of the second segment 511b can be connected to the second gate driver 510b for conducting the scan signal output by the second gate driver 510b to the pixel units 530 in the second display area.

[0130] In Figure 15In the display panel shown, when using half-screen display, for example, the first display area is displayed and the second display area is turned off. Taking the first row of scan signal lines 511 as an example, the first segment 511a transmits a scan signal to the pixel units connected to the first segment 511a under the drive of the first gate driver 510a. Since the pixel units connected to the second segment 511b are disconnected from the first segment 511a, for the first gate driver, the load connected to the first row of scan signal lines 511 is reduced by half compared to Figure 5 the situation shown. In the case where the load is greatly reduced, the power consumption of the pixel units connected to the first row of scan signal lines 511 can be reduced to the greatest extent. That is to say, adopting Figure 15 the technical solution, when the first display area is displayed and the second display area is turned off, the second DDIC 520-2 in the second display area can enter the deep sleep state, achieving the effect of reducing power consumption to the greatest extent.

[0131] Correspondingly, if it is a half-screen display state where the first display area is turned off and the second display area is displayed, the first DDIC 520-1 in the first display area can also enter the deep sleep state, reducing power consumption to the greatest extent.

[0132] Figure 16 The figure shows a schematic diagram of using a routing array and segmented scan signal lines in the display panel. The technical effects of this embodiment can be referred to the description above and will not be elaborated here. It should be noted that Figure 16 the number of rows of pixel units shown in the figure is only an example, and the distributed positions are also examples. It should be understood that multiple rows of pixel units and scan signal lines (not shown in the figure) should also be provided below the routing array.

[0133] This application also provides a foldable screen, including any one of the display panels in the above embodiments.

[0134] The display panel is applied to a foldable 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 foldable screen device. The first side is a side perpendicular to the rotation axis of the foldable screen device. The first side and a second side of the foldable 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 rotation axis and is configured to output a data signal 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 rotation axis and is configured 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 includes: a plurality of scan signal lines, which are connected to the first gate driver and are perpendicular to the rotation axis. The display panel further includes: a first trace array. A first end of the first trace array is connected to the first display driver chip, and a second end of the first trace array is connected to a data signal line of a first folding sub-region in the first display area. The first folding sub-region is a sub-region in the first display area that is bent when the foldable screen device is folded.

[0135] In some embodiments, the first trace array includes a plurality of first traces, and the plurality of first traces do not intersect each other. Each first trace is a ring with an opening.

[0136] In some embodiments, the first trace includes a first sub-side, a second sub-side, and a third sub-side. Two ends of the second sub-side are respectively connected to a first end of the first sub-side and a first end of the third sub-side. A second end of the first sub-side is connected to the first display driver chip, and a second end of the third sub-side is connected to the data signal line of the first folding sub-region.

[0137] In some embodiments, the first sub-side and the second sub-side are straight, the second sub-side is arc-shaped, and the concave direction of the second sub-side is opposite to the direction of the opening.

[0138] In some embodiments, the first sub-side, the second sub-side, and the third sub-side are all straight, the first sub-side is perpendicular to the second sub-side, and the third sub-side is perpendicular to the second sub-side.

[0139] In some embodiments, the first trace is U-shaped.

[0140] In some embodiments, the first trace is concave-shaped.

[0141] In some embodiments, the display panel further includes: a second trace array. A first end of the second trace array is connected to the second display driver chip, and a second end of the second trace array is connected to a data signal line of a second folding sub-region in the second display area. The second folding sub-region is a sub-region in the second display area that is bent when the foldable screen device is folded.

[0142] In some embodiments, the second trace array includes a plurality of second traces that do not intersect each other, and the second traces have the same shape as the first traces.

[0143] In some embodiments, the first display area further includes a first edge sub-area, which is a sub-area in the first display area that is far from the rotation axis and close to the second side; the display panel further includes: a third trace array; a first end of the third trace array is connected to the first display driving chip, and a second end of the third trace array is connected to the data signal lines of the first edge sub-area; the third trace array includes a plurality of third traces that do not intersect each other.

[0144] In some embodiments, the third traces have the same shape as the first traces; alternatively, the shape of the third traces is linear.

[0145] In some embodiments, the second display area further includes a second edge sub-area, which is a sub-area in the second display area that is far from the rotation axis and close to the second side; the display panel further includes: a fourth trace array; a first end of the fourth trace array is connected to the second display driving chip, and a second end of the fourth trace array is connected to the data signal lines of the second edge sub-area; the fourth trace array includes a plurality of fourth traces that have the same shape and do not intersect each other.

[0146] In some embodiments, the fourth traces have the same shape as the second traces; alternatively, the shape of the fourth traces is linear.

[0147] In some embodiments, the foldable screen device further includes a second gate driver. The first gate driver and the second gate driver are respectively arranged along different second sides. The first row scanning signal line is any one of the plurality of scanning signal lines. The first row scanning signal line includes a first segment and a second segment. The first segment is located in the first display area and is connected to the first gate driver. The second segment is located in the second display area and is connected to the second gate driver. The first segment and the second segment are not connected.

[0148] An embodiment of the present application further provides a foldable screen device, including any one of the display panels or foldable screens described in the above embodiments.

[0149] The above has introduced in detail the examples of the display panel provided by the present application. It can be understood that in order to implement the above functions, the corresponding foldable screen device includes the corresponding hardware structures for executing each function. The principles and beneficial effects achieved by the above display panel, foldable screen, and foldable screen device can be referred to the description of the embodiments of the foregoing display device, and will not be elaborated here.

[0150] In several embodiments provided by the present application, it should be understood that the disclosed structure can be implemented in other ways. For example, the structural embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0151] The units described as separate components may or may not be physically separated. The components displayed as units may be one physical unit or multiple physical units, that is, they can be located in one place, or they can be distributed to multiple different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0152] The above content is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display panel is 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 a 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 rotation axis and is configured to output a data signal 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 rotation axis and is configured 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 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 rotation axis; The display panel further includes: a first trace array; A first end of the first trace array is connected to the first display driver chip, and a second end of the first trace array is connected to a data signal line of a first folding sub-region in the first display area. The first folding sub-region is a sub-region in the first display area that is bent when the folding screen device is folded.

2. The display panel according to claim 1, wherein The first trace array includes a plurality of first traces. The plurality of first traces do not intersect each other, and each first trace is a ring with an opening.

3. The display panel according to claim 2, characterized in that, The first trace includes a first sub-side, a second sub-side, and a third sub-side; Two ends of the second sub-side are respectively connected to a first end of the first sub-side and a first end of the third sub-side; A second end of the first sub-side is connected to the first display driver chip, and a 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, wherein, The first sub-side and the second sub-side are straight, the second sub-side is arc-shaped, and the concave direction of the second sub-side is opposite to the direction of the opening.

5. The display panel according to claim 3, wherein The first sub-side, the second sub-side, and the third sub-side are all straight, 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, wherein, The first trace is U-shaped.

7. The display panel according to claim 3, wherein, The first trace is concave-shaped.

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

9. The display panel according to claim 8, characterized in that, The second trace array includes a plurality of second traces. The plurality of second traces do not intersect each other, and the shape of the second trace is the same as that of the first trace.

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-region. The first edge sub-region is a sub-region in the first display area that is far from the rotation axis and close to the second side; The display panel further includes: a third trace array; The first end of the third trace array is connected to the first display driving chip, and the second end of the third trace array is connected to the data signal lines of the first edge sub-region; The third trace array includes a plurality of third traces, and the plurality of third traces do not intersect each other.

11. The display panel according to claim 10, wherein The shape of the third trace is the same as that of the first trace; or, the shape of the third trace is linear.

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-region, and the second edge sub-region is a sub-region in the second display area that is far from the rotation axis and close to the second side; The display panel further includes: a fourth trace array; The first end of the fourth trace array is connected to the second display driving chip, and the second end of the fourth trace array is connected to the data signal lines of the second edge sub-region; The fourth trace array includes a plurality of fourth traces, and the plurality of fourth traces have the same shape and do not intersect each other.

13. The display panel according to claim 12, wherein The shape of the fourth trace is the same as that of the second trace; or, the shape of the fourth trace is linear.

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

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

16. A folding screen device, characterized in that, Comprising: The display panel according to any one of claims 1 to 14, or the folding screen according to claim 15.

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