Display panel, display device and control method thereof

Abstract

The present application provides a display panel, a display device and a control method thereof, wherein the display panel includes a flexible substrate, a driving substrate, a pixel definition layer, a suspension structure and a plurality of pixels. The suspension structure includes a first suspension structure surrounding a main pixel accommodation area, and a second suspension structure cooperating with the first suspension structure surrounding an auxiliary pixel accommodation area; the first suspension structure includes a first conductive structure and a first insulating structure shielding the first conductive structure; at least part of the first conductive structure includes a first conductive portion and a second conductive portion; the first insulating structure separates the first conductive portion from the second conductive portion; each pixel includes a main pixel arranged in the main pixel accommodation area, and an auxiliary pixel arranged in the auxiliary pixel accommodation area; wherein the cathode of the main pixel is arranged in contact with the first conductive portion, and the cathode of the auxiliary pixel is arranged in contact with the second conductive portion. The display panel can avoid the situation where there is a grainy feeling in the display after being stretched, and effectively improve the user experience.

Description

Technical Field

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

[0002] With the development of display technology, people have higher and higher requirements for display technology, and stretchable display panels have received extensive attention. Existing stretchable display panels have a grainy display after being stretched, which leads to a poor viewing experience for users. Summary of the invention

[0003] The display panel, display device and control method thereof provided in the present application are intended to solve the problem that the existing stretchable display panel has a grainy display after being stretched, which affects the user experience.

[0004] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a display panel, comprising:

[0005] A flexible substrate having a plurality of non-stretching regions arranged at intervals and stretchable regions arranged between the non-stretching regions;

[0006] A driving substrate, disposed on the flexible substrate, the driving substrate comprising a rigid area disposed corresponding to the non-stretching area and a flexible area disposed corresponding to the stretchable area;

[0007] A pixel definition layer is disposed on one side of the driving substrate and protrudes from the driving substrate; and the pixel definition layer is at least disposed in the flexible area;

[0008] The overhang structure is at least arranged on a side of the pixel definition layer away from the driving substrate; the overhang structure comprises:

[0009] A first overhanging structure is disposed on the rigid area and surrounds the main pixel accommodating area; the first overhanging structure includes a first conductive structure and a first insulating structure shielding the first conductive structure; the first conductive structure includes a first conductive portion close to the main pixel accommodating area and a second conductive portion away from the main pixel accommodating area; the first insulating structure separates the first conductive portion from the second conductive portion;

[0010] A second overhang structure is disposed on the pixel definition layer and cooperates with the first overhang structure to surround and form an auxiliary pixel accommodating area; the second overhang structure includes a supporting structure and a second insulating structure that shields the supporting structure;

[0011] A plurality of pixels, each pixel comprising an anode, an organic light-emitting layer and a cathode stacked in sequence from close to the driving substrate to away from the driving substrate; each of the pixels comprises a main pixel arranged in the main pixel accommodating area, and an auxiliary pixel arranged in the auxiliary pixel accommodating area;

[0012] The main pixel accommodating area and the auxiliary pixel accommodating area are both located on the rigid area of ​​the driving substrate; the cathode of the main pixel is arranged in contact with the first conductive part, and the cathode of the auxiliary pixel is arranged in contact with the second conductive part.

[0013] In a specific embodiment, the number of the auxiliary pixels of each pixel is one; the first overhang structure is only disposed between the main pixel and the auxiliary pixel in the same pixel; and the display panel further includes:

[0014] The third overhang structure is arranged on a side of the main pixel away from the auxiliary pixel; the third overhang structure includes a second conductive structure and a third insulating structure shielding the second conductive structure; the second conductive structure is arranged in contact with the cathode of the main pixel.

[0015] In a specific embodiment, the plurality of pixels include a first pixel, a second pixel and a third pixel; the number of the auxiliary pixels of the first pixel is two, and they are respectively located on both sides of the main pixel of the first pixel;

[0016] The color of the first pixel is blue;

[0017] The colors of the second pixel and the third pixel are respectively selected from one of red and green; and the colors of the second pixel and the third pixel are different from each other.

[0018] In a specific embodiment, the number of the auxiliary pixels of each pixel is two, and they are respectively located on both sides of the main pixel of each pixel; wherein,

[0019] For the same pixel: a first overhang structure is provided between the two auxiliary pixels and the main pixel; a second overhang structure is provided on the side of the two auxiliary pixels away from the main pixel;

[0020] The cathode of the auxiliary pixel overlaps with the second insulating structure surface of the second overhang structure at a side away from the main pixel.

[0021] In a specific embodiment, the pixel definition layer includes a first definition layer disposed on the rigid area and a second definition layer disposed on the flexible area; two second overhanging structures disposed opposite to each other in adjacent pixels are disposed on the second definition layer at intervals.

[0022] In a specific embodiment, a plurality of the pixels are arranged in sequence along a first direction perpendicular to the stacking direction; each pixel extends along a second direction perpendicular to the stacking direction; wherein the first direction and the second direction are perpendicular to each other; each of the pixels further comprises a plurality of anodes spaced apart along the second direction;

[0023] The auxiliary pixel is arranged on one side and / or both sides of the main pixel along the first direction.

[0024] In a specific embodiment, each of the pixels further comprises:

[0025] A plurality of sub-pixels are sequentially arranged in a second direction perpendicular to the stacking direction; each of the sub-pixels comprises the main pixel and the auxiliary pixel;

[0026] Along the second direction, the third overhang structure is disposed between adjacent primary pixels; and cathodes of adjacent primary pixels are both disposed in contact with the second conductive structure of the third overhang structure;

[0027] Along the second direction, the third overhanging structure is disposed between adjacent auxiliary pixels; and cathodes of adjacent auxiliary pixels are disposed in contact with the second conductive structure.

[0028] In a specific embodiment, the anode of the main pixel and the anode of the auxiliary pixel are formed by the same film layer; at least a portion of the first definition layer located between the main pixel and the auxiliary pixel is arranged on a surface of the pixel anode facing away from the driving substrate.

[0029] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide a display device, comprising a display panel as mentioned in any one of the above items.

[0030] In order to solve the above technical problems, another technical solution adopted by the present application is: to provide a control method of a display device, the display device comprising:

[0031] A display panel, which is a display panel as mentioned in any one of the above items;

[0032] A sensor for detecting the stretching degree of the display panel;

[0033] a controller, one end of which is electrically connected to the sensor for receiving an electrical signal from the sensor; the other end of which is electrically connected to the second conductive portion for controlling a cathode signal input to a cathode of the auxiliary pixel;

[0034] The control method of the display device comprises:

[0035] In response to the sensor detecting that the stretching degree of the display panel is greater than a preset value, the controller transmits the cathode signal to the cathode of the auxiliary pixel through the second conductive part, so that the auxiliary pixel emits light;

[0036] In response to the sensor detecting that the stretching degree of the display panel is less than a preset value, the controller stops transmitting the cathode signal to the cathode of the auxiliary pixel through the second conductive portion to turn off the auxiliary pixel.

[0037] Beneficial effects of the embodiments of the present application: Different from the prior art, the present application provides a display panel, a display device and a control method thereof, wherein the display panel includes a flexible substrate, a driving substrate, a pixel definition layer, a suspension structure and a plurality of pixels. The flexible substrate has a plurality of non-stretching areas arranged at intervals and a stretchable area arranged between the non-stretching areas; the driving substrate is arranged on the flexible substrate, and the driving substrate includes a rigid area arranged corresponding to the non-stretching area and a flexible area arranged corresponding to the stretchable area; the pixel definition layer is arranged on one side of the driving substrate and protrudes from the driving substrate; and the pixel definition layer is at least arranged in the flexible area. The overhang structure is at least arranged on the side of the pixel definition layer away from the driving substrate; wherein the overhang structure includes a first overhang structure and a second overhang structure; the first overhang structure is arranged on the rigid area and surrounds the main pixel accommodation area; the first overhang structure includes a first conductive structure and a first insulating structure shielding the first conductive structure; the first conductive structure includes a first conductive part close to the main pixel accommodation area and a second conductive part away from the main pixel accommodation area; the first insulating structure separates the first conductive part from the second conductive part; the second overhang structure is arranged on the pixel definition layer and cooperates with the first overhang structure to surround the auxiliary pixel accommodation area; the second overhang structure includes a supporting structure and a second insulating structure shielding the supporting structure. Each pixel includes an anode, an organic light-emitting layer and a cathode stacked in sequence from close to the driving substrate to away from the driving substrate; each pixel includes a main pixel arranged in the main pixel accommodation area, and an auxiliary pixel arranged in the auxiliary pixel accommodation area; wherein the main pixel accommodation area and the auxiliary pixel accommodation area are both located on the rigid area of ​​the driving substrate; the cathode of the main pixel is arranged in contact with the first conductive part, and the cathode of the auxiliary pixel is arranged in contact with the second conductive part. By setting a main pixel and an auxiliary pixel in each pixel, after the display panel is stretched, the auxiliary pixel can be made to emit light to compensate for the luminous brightness of each pixel, thereby avoiding the situation where the display panel has a grainy feeling after being stretched, and effectively improving the user experience; at the same time, by setting a first overhang structure having a first conductive part and a second conductive part between the main pixel and the auxiliary pixel, and the cathode of the main pixel and the cathode of the auxiliary pixel are respectively contacted with the first conductive part and the second conductive part, and the first conductive part and the second conductive part are spaced apart, so as to realize the transmission of the cathode signal to the auxiliary pixel solely through the second conductive part, so as to control the auxiliary pixel to emit light only after the display panel is stretched. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the structure of a display panel provided in the first embodiment of the present application;

[0039] Figure 2a for Figure 1 A top view of the display panel shown;

[0040] Figure 2b for Figure 2a Schematic diagram of cathode routing of the structure shown;

[0041] Figure 2c for Figure 2b Sectional view at A in the middle;

[0042] Figure 3 A schematic diagram of the structure of a display panel provided in the second embodiment of the present application;

[0043] Figure 4 for Figure 3 A top view of the display panel shown;

[0044] Figure 5 A top view of a display panel provided in the third embodiment of the present application;

[0045] Figure 6 A top view of a display panel provided in a fourth embodiment of the present application;

[0046] Figure 7a for Figure 6 The cross-sectional view of the display panel along line BB is shown;

[0047] Figure 7b for Figure 6 The cross-sectional view of the display panel along line CC is shown;

[0048] Figure 8 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0049] Description of Figure Numbers:

[0050] 100-display panel; 200-sensor; 300-controller; 1-flexible substrate; 2-driving substrate; 3-pixel definition layer; 4-overhang structure; 5-pixel; 6-etching protection layer; 7-encapsulation layer; 11-non-stretching area; 12-stretchable area; 21-rigid area; 22-flexible area; 31-first definition layer; 32-second definition layer; 33-third definition layer; 41-first overhang structure; 42-second overhang structure; 43-third overhang structure; 20 1-jump wire; 401-support structure; 411-first conductive structure; 412-first insulating structure; 421-second insulating structure; 431-second conductive structure; 432-third insulating structure; 4111-first conductive portion; 4112-second conductive portion; 50-sub-pixel; 51-main pixel; 52-auxiliary pixel; 53-first pixel; 54-second pixel; 55-third pixel; 501-anode; 502-organic light-emitting layer; 503-cathode. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0052] The terms "first", "second", "third" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of this application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0053] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0054] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0055] See also Figure 1-2c , Figure 1 A schematic diagram of the structure of a display panel provided in the first embodiment of the present application; Figure 2a for Figure 1 A top view of the display panel shown; Figure 2b for Figure 2a Schematic diagram of cathode routing of the structure shown; Figure 2c for Figure 2b The present application provides a display panel, which may be an organic light emitting diode (OLED) display panel that can be stretched under external force. Specifically, Figure 1 As shown, the display panel may include a flexible substrate 1 , a driving substrate 2 , a pixel definition layer 3 , a suspension structure 4 and a plurality of pixels 5 .

[0056] Among them, the flexible substrate 1 has a plurality of non-stretching areas 11 arranged at intervals and stretchable areas 12 arranged between the non-stretching areas 11; the flexible substrate 1 is a substrate with stretchable properties, which can be stretched in a specific direction and restored again; the flexible substrate 1 is used to support and protect various components of the display panel.

[0057] The driving substrate 2 is arranged on the flexible substrate 1 and is used to drive the pixels to emit light. Specifically, the driving substrate 2 may include a rigid area 21 arranged corresponding to the non-stretching area 11 and a flexible area 22 arranged corresponding to the stretchable area 12. Among them, the rigid area 21 of the driving substrate 2 is made of a material with a high elastic modulus, which has a strong resistance to deformation to prevent the pixels from being damaged during the stretching process. The flexible area 22 of the driving substrate 2 is made of a material with a small elastic modulus, which has a weak resistance to deformation and can be stretched along the direction of the force under the action of an external force to achieve a stretchable display panel.

[0058] The pixel definition layer 3 is disposed on one side of the driving substrate 2 and protrudes from the driving substrate 2; and the pixel definition layer 3 is disposed at least on the flexible area 22. It can be understood that the portion of each film layer of the display panel corresponding to the flexible area 22 of the driving substrate 2 can be stretched and deformed following the flexible area 22 under the action of an external force, while the portion of each film layer corresponding to the rigid area 21 will remain unchanged with the rigid area 21.

[0059] The overhang structure 4 is at least partially disposed on the side of the pixel definition layer 3 away from the driving substrate 2 to separate pixels 5 of different colors to avoid pixel crosstalk. The overhang structure 4 may include a first overhang structure 41 and a second overhang structure 42 .

[0060] The first overhang structure 41 is disposed on the rigid area 21 and surrounds the main pixel accommodation area. Specifically, the first overhang structure 41 includes a first conductive structure 411 and a first insulating structure 412 that shields the first conductive structure 411; at least part of the first conductive structure 411 includes a first conductive portion 4111 close to the main pixel accommodation area and a second conductive portion 4112 away from the main pixel accommodation area; and the first insulating structure 412 separates the first conductive portion 4111 from the second conductive portion 4112. The second overhang structure 42 is disposed on the pixel definition layer 3 and cooperates with the first overhang structure 41 to surround the auxiliary pixel accommodation area; the second overhang structure 42 includes a support structure 401 and a second insulating structure 421 that shields the support structure 401.

[0061] Each pixel 5 may include an anode 501, an organic light-emitting layer 502, and a cathode 503 which are stacked in sequence from close to the driving substrate 2 to away from the driving substrate 2; wherein the anode 501 is connected to the anode 501 power line, and the cathode 503 is connected to the cathode 503 power line, so that the organic light-emitting layer 502 is conductive and emits light. Specifically, each pixel 5 includes a main pixel 51 arranged in the main pixel accommodating area, and an auxiliary pixel 52 arranged in the auxiliary pixel accommodating area. It can be understood that the first overhang structure 41 having the first conductive portion 4111 and the second conductive portion 4112 is located between the main pixel 51 and the auxiliary pixel 52; and the cathode 503 of the main pixel 51 is arranged in contact with the first conductive portion 4111, and the cathode 503 of the auxiliary pixel 52 is arranged in contact with the second conductive portion 4112.

[0062] Among them, the main pixel accommodating area and the auxiliary pixel accommodating area are both located on the rigid area 21 of the driving substrate 2; that is, the projection of the main pixel 51 on the flexible substrate 1 along the stacking direction Z (hereinafter referred to as the stacking direction Z) of the display panel, and the projection of the auxiliary pixel 52 on the flexible substrate 1 along the stacking direction Z are both located within the projection of the rigid area 21 on the flexible substrate 1 along the stacking direction Z. In other words, the anode 501 and the organic light-emitting layer 502 of the main pixel 51 and / or the auxiliary pixel 52 are completely located within the range corresponding to the rigid area 21, so as to avoid damage to the anode 501 and the organic light-emitting layer 502 during the stretching process of the display panel, thereby affecting the display effect.

[0063] In this way, the embodiment of the present application sets a main pixel 51 and an auxiliary pixel 52 in each pixel 5, so that after the display panel is stretched, the auxiliary pixel 52 can be made to emit light to compensate for the luminous brightness of each pixel 5, thereby avoiding the situation where the display panel has a grainy feeling after being stretched, and effectively improving the user experience; at the same time, a first overhang structure 41 having a first conductive part 4111 and a second conductive part 4112 is set between the main pixel 51 and the auxiliary pixel 52, and the cathode 503 of the main pixel 51 and the cathode 503 of the auxiliary pixel 52 are respectively contacted with the first conductive part 4111 and the second conductive part 4112, and the first conductive part 4111 and the second conductive part 4112 are set at intervals, so as to realize the transmission of the cathode 503 signal to the auxiliary pixel 52 through the second conductive part 4112 alone, so as to control the auxiliary pixel 52 to emit light only after the display panel is stretched.

[0064] like Figure 2a As shown, in a specific embodiment, the plurality of pixels may include a first pixel 53, a second pixel 54, and a third pixel 55, and the first pixel 53, the second pixel 54, and the third pixel 55 all include a primary pixel 51 and an auxiliary pixel 52. The color of the first pixel 53 may be blue (B), and the colors of the second pixel 54 and the third pixel 55 may be selected from one of red (R) and green (G), respectively; and the colors of the second pixel 54 and the third pixel 55 are different from each other. The following embodiments of the present application are described by taking the color of the second pixel 54 as green and the color of the third pixel 55 as red as an example.

[0065] Specifically, Figure 2a As shown, a plurality of pixels are repeatedly arranged in sequence along the first direction X; wherein the second pixel 54 and the third pixel 55 are respectively located on both sides of the first pixel 53 along the first direction X; that is, along the first direction X, a plurality of pixels of different colors are arranged in the manner of "RGBRGB..."; wherein the first direction X is perpendicular to the stacking direction Z of the display panel. And each pixel 5 extends along the second direction Y, which is also perpendicular to the stacking direction, and the first direction X and the second direction Y are perpendicular to each other.

[0066] In this embodiment, the number of auxiliary pixels 52 of each pixel 5 can be two, and the two auxiliary pixels 52 can be arranged on both sides of the main pixel 51 along the first direction X, so that after the display panel is stretched, the auxiliary pixels 52 on both sides of the main pixel 51 can compensate for the light emission and enhance the compensation effect.

[0067] See also Figure 1, further, the anode 501 of the main pixel 51 and the anode 501 of the auxiliary pixel 52 can be formed by the same film layer, so as to synchronously transmit the anode 501 signal to the main pixel 51 and the auxiliary pixel 52 belonging to the same pixel; in this way, the auxiliary pixel 52 can be controlled to emit light by controlling whether the cathode 503 signal is transmitted to the auxiliary pixel 52, and the light emission intensity of the auxiliary pixel 52 is consistent with that of the main pixel 51. Specifically, the pixel definition layer 3 includes a first definition layer 31 disposed on the rigid area 21 and a second definition layer 32 disposed on the flexible area 22; wherein the first overhang structure 41 can be disposed on the first definition layer 31, and the second overhang structure 42 is disposed on the second definition layer 32. The first definition layer 31 located between the main pixel 51 and the auxiliary pixel 52 can be disposed on the side surface of the pixel's anode 501 away from the driving substrate 2, so as to separate the organic light-emitting layer 502 of the main pixel 51 from the organic light-emitting layer 502 of the auxiliary pixel 52.

[0068] Furthermore, each pixel 5 may also include a plurality of anodes 501, and the plurality of anodes 501 are arranged at equal intervals along the second direction Y. It can be understood that the film layer of a portion of the pixel corresponding to each anode 501 and the anode 501 form a separate sub-pixel 50; each sub-pixel 50 can emit light separately by controlling the anode 501 signal transmitted to each anode 501.

[0069] In this embodiment, reference Figure 1 , for the same pixel 5: a first overhang structure 41 is provided between the two auxiliary pixels 52 and the main pixel 51, that is, the two first overhang structures 41 are respectively provided between the main pixel 51 and the auxiliary pixels 52 on both sides in the same pixel to separate the cathode 503 of the main pixel 51 from the cathodes 503 of the auxiliary pixels 52 on both sides. The first overhang structure 41 is provided on the surface of the first definition layer 31 facing away from the anode 501; specifically, the first overhang structure 41 may also include a support structure 401 provided on the surface of the first definition layer 31. The first conductive structure 411 and the first insulating structure 412 are stacked on the side of the supporting structure 401 away from the first definition layer 31, and the first insulating structure 412 is located on the side of the first conductive structure 411 away from the supporting structure 401; the middle part of the first insulating structure 412 extends along the stacking direction Z toward the supporting structure 401 and extends to the surface of the supporting structure 401 to separate the first conductive part 4111 of the first conductive structure 411 from the second conductive part 4112, so as to avoid the cathode 503 of the main pixel 51 and the cathode 503 of the auxiliary pixel 52 being electrically connected through the first conductive part 4111 and the second conductive part 4112, causing signal crosstalk.

[0070] Of course, in other embodiments, the first definition layer 31 may not be set on the surface of the anode 501 facing away from the driving substrate 2; the supporting structure 401 of the first overhang structure 41 may be directly set on the surface of the anode 501, and the thickness of the supporting structure 401 may be increased so that the height of the first overhang structure 41 directly set on the surface of the anode 501 is consistent with the height of the first overhang structure 41 set on the surface of the first definition layer 31.

[0071] like Figure 1 As shown, the two side edges of the first insulating structure 412 protrude from the first conductive structure 411 to form an eaves structure, so that when the organic light-emitting layer 502 and the cathode 503 are deposited by vapor deposition, the evaporation angle can be changed through the eaves structure so that the cathode 503 covers the organic light-emitting layer 502, which is beneficial for the cathode 503 to contact and conduct with the conductive part.

[0072] In a specific embodiment, for the same pixel 5: a second overhang structure 42 is provided on the side of the two auxiliary pixels 52 away from the main pixel 51. In addition, the two second overhang structures 42 disposed opposite to each other in adjacent pixels 5 are disposed between the auxiliary pixels 52 of two adjacent pixels; that is, the two second overhang structures 42 disposed opposite to each other in adjacent pixels 5 are disposed on the second definition layer 32 at intervals. Specifically, both sides of the second insulating structure 421 of the second overhang structure 42 also protrude from the support structure 401 to form an eaves structure, and the function of the eaves structure is the same as that of the eaves structure of the first overhang structure 41. For details, please refer to the above content, which will not be repeated here. The cathode 503 of the auxiliary pixel 52 is overlapped on the surface of the second insulating structure 421 along the first direction X away from the first overhang structure 41 to completely cover the organic light-emitting layer 502. It can be understood that by providing two second overhang structures 42 between the auxiliary pixels 52 of two adjacent pixels, the overlap of the cathodes 503 of two auxiliary pixels 52 belonging to different pixels can be effectively avoided, thereby avoiding signal crosstalk.

[0073] Of course, in other embodiments, only one second overhang structure 42 may be provided between the auxiliary pixels 52 of two adjacent pixels to separate the auxiliary pixels 52 of different colors to avoid pixel crosstalk. The cathodes 503 of the two auxiliary pixels 52 may overlap the surface of the second insulating structure 421 of the second overhang structure 42, as long as the cathodes 503 of the two auxiliary pixels 52 are spaced apart on the surface of the second insulating structure 421 to avoid signal crosstalk.

[0074] In a specific embodiment, the cathode wiring of the main pixel 51 and the auxiliary pixel 52 is as follows: Figure 2bSpecifically, for the same pixel 5, the first conductive part 4111 electrically connected to the cathode 503 of the main pixel 51, and the second conductive part 4112 electrically connected to the cathode 503 of the auxiliary pixel 52, are connected at the intersection A to avoid signal crosstalk affecting the control of the auxiliary pixel. Figure 2c At the intersection A, the second conductive part 4112 is provided on both sides of the first conductive part 4111 along the first direction X, and the second conductive parts 4112 on both sides are jumpered by the jumper 201. The jumper 201 can be provided in the driving substrate 2 and close to the side of the pixel definition layer 3, and the second conductive part 4112 is provided in contact with the jumper 201 through a through hole penetrating the pixel definition layer 3 and the support structure 401, so as to realize the electrical connection of the second conductive parts 4112 on both sides. Specifically, the jumper 201 can be made of the same metal material as the second conductive part 4112.

[0075] In addition, in the display panel, the cathode wiring of the main pixel 51 and the cathode wiring of the auxiliary pixel 52 are each connected to a separate common cathode VSS (not shown); that is, the first conductive portion 4111 and the second conductive portion 4112 are each connected to a separate common cathode VSS, so that the cathode signal transmitted to the cathode 503 of the main pixel 51 and the cathode signal transmitted to the cathode 503 of the auxiliary pixel 52 do not interfere with each other.

[0076] See also Figure 1 In a specific embodiment, the display panel may further include an etching protection layer 6 and an encapsulation layer 7. The etching protection layer 6 is used to perform anti-etching protection on each film layer in the pixel during the process of preparing pixels of other colors of the display panel, so as to prevent the prepared pixel from being damaged in the subsequent preparation process. Specifically, the etching protection layer 6 is arranged on the side of the cathode 503 away from the organic light-emitting layer 502 and covers the cathode 503; so as to perform anti-etching protection on the cathode 503. The etching protection layer 6 may include a non-conductive inorganic material; specifically, the etching protection layer 6 may include a silicon-containing inorganic material, such as a SiNx-based inorganic material.

[0077] Preferably, the etching protection layer 6 can also fill the eaves structure and overlap the surface of the overhang structure 4. Specifically, the etching protection layer 6 may include a first protection layer disposed on the main pixel 51 and a second protection layer disposed on the auxiliary pixel 52. The two sides of the first protection layer respectively fill the eaves structure of the first overhang structure 41 close to the main pixel 51, and cover the surface of the first conductive portion 4111 and the first insulating structure 412. One side of the second protection layer fills the eaves structure of the first overhang structure 41 close to the auxiliary pixel 52, and covers the surface of the second conductive portion 4112 and the first insulating structure 412, and the other side fills the eaves structure of the second overhang structure 42 close to the auxiliary pixel 52, and covers the surface of the second insulating structure 421.

[0078] After all pixels are prepared, an encapsulation layer 7 may be disposed on the display panel to encapsulate the display panel as a whole. Specifically, the encapsulation layer 7 is coated on the side of the etching protection layer 6 away from the driving substrate 2 and covers the portion of the overhang structure 4 not covered by the etching protection layer 6.

[0079] See also Figure 3-Figure 4 , Figure 3 A schematic diagram of the structure of a display panel provided in the second embodiment of the present application; Figure 4 for Figure 3 A top view of the display panel shown. The structure of the display panel provided in the second embodiment of the present application is basically the same as the structure of the display panel provided in the first embodiment of the present application, except that, in the second embodiment of the present application, the number of auxiliary pixels 52 of each pixel 5 is one. It can be understood that the auxiliary pixel 52 is only arranged on one side of the main pixel 51 along the first direction X. Specifically, the display panel may also include a third overhang structure 43 arranged on the side of the main pixel 51 away from the auxiliary pixel 52, the first overhang structure 41 is only arranged between the main pixel 51 and the auxiliary pixel 52 in the same pixel, and the third overhang structure 43 cooperates with the first overhang structure 41 to surround and form a main pixel accommodating area.

[0080] Among them, the third overhang structure 43 may include a second conductive structure 431 and a third insulating structure 432 that blocks the second conductive structure 431; and the second conductive structure 431 is arranged in contact with the cathode 503 of the main pixel 51. Specifically, the pixel definition layer 3 also includes a third definition layer 33 arranged on the side of the main pixel 51 away from the first definition layer 31, and the third overhang structure 43 may also include a support structure 401 arranged on the surface of the third definition layer 33. The second conductive structure 431 and the third insulating structure 432 are stacked and arranged on the side of the support structure 401 away from the third definition layer 33, and the third insulating structure 432 is located on the side of the second conductive structure 431 away from the support structure 401. The second conductive structure 431 and the first conductive part 4111 jointly transmit the cathode 503 signal to the main pixel 51. The two side edges of the third insulating structure 432 also protrude from the second conductive structure 431 to form an eaves structure. The function of the eaves structure can refer to the above content and will not be repeated here.

[0081] See also Figure 5 , Figure 5A top view of a display panel provided in the third embodiment of the present application; the structure of the display panel provided in the third embodiment of the present application is substantially the same as that of the display panel provided in the second embodiment of the present application, except that, in the third embodiment of the present application, the number of auxiliary pixels 52 in the first pixel 53 is two; that is, two auxiliary pixels 52 are provided in the blue pixel. It can be understood by those skilled in the art that, compared with red pixels and green pixels, the decay speed of blue pixels is relatively fast, which affects the service life of the display panel; the third embodiment of the present application increases the service life of blue pixels by adding auxiliary pixels 52 to blue pixels, thereby effectively increasing the service life of the display panel.

[0082] Specifically, Figure 5 As shown, in the first pixel 53, two auxiliary pixels 52 are respectively located on both sides of the main pixel 51 along the first direction X. The second pixel 54 and the third pixel 55 are each provided with only one auxiliary pixel 52; wherein the main pixel 51 of the second pixel 54 is provided close to the auxiliary pixel 52 on one side of the first pixel 53, and the main pixel 51 of the third pixel 55 is provided close to the auxiliary pixel 52 on the other side of the first pixel 53. Of course, in other embodiments, the auxiliary pixel 52 of the second pixel 54 and / or the auxiliary pixel 52 of the third pixel 55 may also be provided close to the auxiliary pixel 52 of the first pixel 53.

[0083] See also Figure 6-7b , Figure 6 A top view of a display panel provided in a fourth embodiment of the present application; Figure 7a for Figure 6 The cross-sectional view of the display panel along line BB is shown; Figure 7b for Figure 6 The cross-sectional view of the display panel along the CC line is shown. The structure of the display panel provided in the fourth embodiment of the present application is basically the same as the structure of the display panel provided in the first embodiment of the present application, except that, in the fourth embodiment of the present application, each pixel 5 may also include a plurality of sub-pixels 50; wherein the plurality of sub-pixels 50 are sequentially arranged at intervals along the second direction Y, and each sub-pixel 50 may include a main pixel 51 and an auxiliary pixel 52. Specifically, the number of auxiliary pixels 52 in each sub-pixel 50 is two, and the two auxiliary pixels 52 are respectively located on both sides of the main pixel 51 along the first direction X. As shown Figure 6 As shown, the main pixel 51 and the auxiliary pixel 52 can form a number of independent pixel islands on the display panel and be arranged in an array; in this way, the evaporation area of ​​the organic light-emitting layer 502 and the cathode 503 can be reduced, the material consumption can be reduced, and the manufacturing cost can be effectively reduced.

[0084] Specific, combined Figure 7a, along the second direction Y, the third overhang structure 43 is disposed between adjacent primary pixels 51; and the cathodes 503 of adjacent primary pixels 51 are disposed in contact with the second conductive structure 431 of the third overhang structure 43. That is, in the fourth embodiment of the present application, the first overhang structure 41 and the third overhang structure 43 surround and form a primary pixel accommodating area, and the primary pixel 51 of the sub-pixel 50 is disposed in the primary pixel accommodating area; the second conductive structure 431 between two primary pixels 51 adjacent to each other along the second direction Y can be used as a bridge line to connect the cathodes 503 of the two primary pixels 51.

[0085] Combination Figure 7b , along the second direction Y, a third overhang structure 43 may also be provided between adjacent auxiliary pixels 52; and the cathodes 503 of adjacent auxiliary pixels 52 are all provided in contact with the second conductive structure 431. That is, the first overhang structure 41, the second overhang structure 42 and the third overhang structure 43 surround and form an auxiliary pixel accommodating area, and the auxiliary pixel 52 of the sub-pixel 50 is provided in the auxiliary pixel accommodating area; the second conductive structure 431 between two adjacent auxiliary pixels 52 along the second direction Y may serve as a bridge line to connect the cathodes 503 of the two auxiliary pixels 52.

[0086] The embodiment of the present application provides a display panel, which includes a flexible substrate 1, a driving substrate 2, a pixel definition layer 3, a suspension structure 4 and a plurality of pixels 5. The flexible substrate 1 has a plurality of non-stretching areas 11 arranged at intervals and a stretchable area 12 arranged between the non-stretching areas 11; the driving substrate 2 is arranged on the flexible substrate 1, and the driving substrate 2 includes a rigid area 21 arranged corresponding to the non-stretching area 11 and a flexible area 22 arranged corresponding to the stretchable area 12; the pixel definition layer 3 is arranged on one side of the driving substrate 2 and protrudes from the driving substrate 2. The overhang structure 4 is at least arranged on the side of the pixel definition layer 3 away from the driving substrate 2; wherein the overhang structure 4 includes a first overhang structure 41 and a second overhang structure 42; the first overhang structure 41 is arranged on the rigid area 21 and surrounds the main pixel accommodating area; the first overhang structure 41 includes a first conductive structure 411 and a first insulating structure 412 that shields the first conductive structure 411; at least part of the first conductive structure 411 includes a first conductive portion 4111 close to the main pixel accommodating area and a second conductive portion 4112 away from the main pixel accommodating area; the first insulating structure 412 separates the first conductive portion 4111 from the second conductive portion 4112; the second overhang structure 42 is arranged on the pixel definition layer 3 and cooperates with the first overhang structure 41 to surround the auxiliary pixel accommodating area; the second overhang structure 42 includes a supporting structure 401 and a second insulating structure 421 that shields the supporting structure 401. Each pixel 5 includes an anode 501, an organic light-emitting layer 502 and a cathode 503 which are stacked in sequence from close to the driving substrate 2 to away from the driving substrate 2; each pixel 5 includes a main pixel 51 arranged in the main pixel accommodating area, and an auxiliary pixel 52 arranged in the auxiliary pixel accommodating area; wherein the main pixel accommodating area and the auxiliary pixel accommodating area are both located on the rigid area 21 of the driving substrate 2; the cathode 503 of the main pixel 51 is arranged in contact with the first conductive portion 4111, and the cathode 503 of the auxiliary pixel 52 is arranged in contact with the second conductive portion 4112. By setting a main pixel 51 and an auxiliary pixel 52 in each pixel 5, after the display panel is stretched, the auxiliary pixel 52 can be made to emit light to compensate for the luminous brightness of each pixel 5, thereby avoiding the situation where the display panel has a grainy feeling after being stretched, and effectively improving the user experience; at the same time, by setting a first overhang structure 41 having a first conductive part 4111 and a second conductive part 4112 between the main pixel 51 and the auxiliary pixel 52, and the cathode 503 of the main pixel 51 and the cathode 503 of the auxiliary pixel 52 are respectively in contact with the first conductive part 4111 and the second conductive part 4112, and the first conductive part 4111 and the second conductive part 4112 are spaced apart, so as to realize the transmission of the cathode 503 signal to the auxiliary pixel 52 through the second conductive part 4112 alone, so as to control the auxiliary pixel 52 to emit light only after the display panel is stretched.

[0087] See also Figure 8 , Figure 8This is a schematic diagram of the structure of a display device provided in one embodiment of the present application. The present application also provides a display device, which may include the display panel 100 involved in any of the above embodiments.

[0088] The present application also provides a method for controlling a display device, which is used to control the display device involved in the above embodiment; specifically, Figure 8 As shown, the display device may further include a sensor 200 and a controller 300. The sensor 200 may be disposed on the display panel 100, and is used to detect the stretching degree of the display panel 100 and output a corresponding electrical signal according to the stretching degree. One end of the controller 300 is electrically connected to the sensor 200, and is used to receive the electrical signal output by the sensor, and the other end of the controller 300 is electrically connected to the second conductive portion 4112, and is used to control the cathode signal input to the cathode 503 of the auxiliary pixel 52.

[0089] Specifically, the control method of the display device includes:

[0090] Step S1: In response to the sensor detecting that the stretching degree of the display panel is greater than a preset value, the controller transmits a cathode signal to the cathode of the auxiliary pixel through the second conductive part to make the auxiliary pixel emit light.

[0091] In a specific embodiment, the sensor 200 may be a tension sensor; it is understood that after the display panel 100 is stretched and deformed under the action of an external force, the tension of the display panel 100 on the sensor 200 will also change accordingly, and there is a corresponding relationship between the magnitude of the tension and the degree of stretching; the sensor 200 can determine the degree of stretching of the display panel 100 according to the magnitude of the detected tension, and transmit an electrical signal corresponding to the degree of stretching to the controller 300 in real time. When the degree of stretching of the display panel 100 is greater than a preset value, that is, when the electrical signal of the sensor 200 received by the controller 300 is greater than a preset value, the controller 300 turns on the end electrically connected to the second conductive portion 4112 and transmits a cathode signal to the cathode 503 of the auxiliary pixel 52 through the second conductive portion 4112, so that the organic light-emitting layer 502 of the auxiliary pixel 52 is conductive and emits light.

[0092] Step S2: in response to the sensor detecting that the stretching degree of the display panel is less than a preset value, the controller stops transmitting the cathode signal to the cathode of the auxiliary pixel through the second conductive part to turn off the auxiliary pixel.

[0093] Specifically, after the display panel 100 recovers its deformation under the action of external force, the pulling force of the display panel 100 on the sensor 200 is reduced, and the electrical signal output by the sensor 200 also changes accordingly. When the electrical signal received by the controller 300 is less than a preset value, the controller 300 closes the end electrically connected to the second conductive part 4112 and stops transmitting the cathode signal to the cathode 503 of the auxiliary pixel 52 through the second conductive part 4112, so that the organic light-emitting layer 502 of the auxiliary pixel 52 stops emitting light.

[0094] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: include: A flexible substrate having a plurality of non-stretching regions arranged at intervals and stretchable regions arranged between the non-stretching regions; A driving substrate, disposed on the flexible substrate, the driving substrate comprising a rigid area disposed corresponding to the non-stretching area and a flexible area disposed corresponding to the stretchable area; A pixel definition layer is disposed on one side of the driving substrate and protrudes from the driving substrate; And the pixel definition layer is at least arranged in the flexible area; The overhang structure is at least arranged on a side of the pixel definition layer away from the driving substrate; the overhang structure comprises: A first overhanging structure is disposed on the rigid area and surrounds the main pixel accommodating area; the first overhanging structure includes a first conductive structure and a first insulating structure shielding the first conductive structure; the first conductive structure includes a first conductive portion close to the main pixel accommodating area and a second conductive portion away from the main pixel accommodating area; the first insulating structure separates the first conductive portion from the second conductive portion; A second overhang structure is disposed on the pixel definition layer and cooperates with the first overhang structure to surround and form an auxiliary pixel accommodating area; the second overhang structure includes a supporting structure and a second insulating structure that shields the supporting structure; A plurality of pixels, each pixel comprising an anode, an organic light-emitting layer and a cathode stacked in sequence from close to the driving substrate to away from the driving substrate; each of the pixels comprises a main pixel arranged in the main pixel accommodating area, and an auxiliary pixel arranged in the auxiliary pixel accommodating area; The main pixel accommodating area and the auxiliary pixel accommodating area are both located on the rigid area of ​​the driving substrate; the cathode of the main pixel is arranged in contact with the first conductive part, and the cathode of the auxiliary pixel is arranged in contact with the second conductive part.

2. The display panel according to claim 1, characterized in that: The number of the auxiliary pixels of each pixel is one; The first overhang structure is only disposed between the main pixel and the auxiliary pixel in the same pixel; The display panel further includes: A third overhang structure is arranged on a side of the main pixel away from the auxiliary pixel; The third overhanging structure includes a second conductive structure and a third insulating structure shielding the second conductive structure; the second conductive structure is arranged in contact with the cathode of the main pixel.

3. The display panel according to claim 1, characterized in that: The plurality of pixels include a first pixel, a second pixel and a third pixel; the number of the auxiliary pixels of the first pixel is two, and they are respectively located on both sides of the main pixel of the first pixel; The color of the first pixel is blue; The colors of the second pixel and the third pixel are respectively selected from one of red and green; and the colors of the second pixel and the third pixel are different from each other.

4. The display panel according to claim 1, characterized in that: The number of the auxiliary pixels of each pixel is two, and they are respectively located on both sides of the main pixel of each pixel; wherein, For the same pixel: a first overhang structure is provided between the two auxiliary pixels and the main pixel; a second overhang structure is provided on the side of the two auxiliary pixels away from the main pixel; The cathode of the auxiliary pixel overlaps with the second insulating structure surface of the second overhang structure at a side away from the main pixel.

5. The display panel according to claim 4, characterized in that: The pixel definition layer includes a first definition layer arranged on the rigid area and a second definition layer arranged on the flexible area; two second overhanging structures arranged opposite to each other in adjacent pixels are arranged on the second definition layer at intervals.

6. The display panel according to any one of claims 1 to 5, characterized in that: The plurality of pixels are arranged in sequence along a first direction perpendicular to the stacking direction; each pixel extends along a second direction perpendicular to the stacking direction; wherein the first direction and the second direction are perpendicular to each other; each pixel further comprises a plurality of anodes spaced apart along the second direction; The auxiliary pixel is arranged on one side and / or both sides of the main pixel along the first direction.

7. The display panel according to any one of claims 1 to 5, characterized in that: Each of the pixels further comprises: A plurality of sub-pixels are sequentially arranged in a second direction perpendicular to the stacking direction; each of the sub-pixels comprises the main pixel and the auxiliary pixel; Along the second direction, a third overhang structure in the overhang structure is disposed between adjacent primary pixels; and cathodes of adjacent primary pixels are both disposed in contact with the second conductive structure of the third overhang structure; Along the second direction, the third overhanging structure is disposed between adjacent auxiliary pixels; and cathodes of adjacent auxiliary pixels are disposed in contact with the second conductive structure.

8. The display panel according to claim 5, characterized in that: The anode of the main pixel and the anode of the auxiliary pixel are formed by the same film layer; at least a portion of the first definition layer located between the main pixel and the auxiliary pixel is arranged on a surface of the anode of the pixel facing away from the driving substrate.

9. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-8.

10. A method for controlling a display device, characterized in that: The display device comprises: The display panel is a display panel as claimed in any one of claims 1 to 8; A sensor for detecting a stretching degree of the display panel; a controller, one end of which is electrically connected to the sensor for receiving an electrical signal from the sensor; the other end of which is electrically connected to the second conductive portion for controlling a cathode signal input to a cathode of the auxiliary pixel; The control method of the display device comprises: In response to the sensor detecting that the stretching degree of the display panel is greater than a preset value, the controller transmits the cathode signal to the cathode of the auxiliary pixel through the second conductive part, so that the auxiliary pixel emits light; In response to the sensor detecting that the stretching degree of the display panel is less than a preset value, the controller stops transmitting the cathode signal to the cathode of the auxiliary pixel through the second conductive portion to turn off the auxiliary pixel.

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