Display panel, display module and display device

Abstract

The invention provides a display panel, a display module and a display device.The display panel is provided with a display area and a non-display area, the non-display area at least partially surrounds the display area, at least part of the non-display area comprises a first area and a second area, and the display panel further comprises a plurality of first signal lines which extend in the second direction and are located in the second area, the second direction intersects with the first direction; and the second signal line is used for transmitting the power supply signal. According to the display panel, the first sub-signal lines are located in the first area, the second sub-signal lines are located in the second area and located among the multiple first signal lines, the width of the first area can be narrowed, then the overall width of the non-display area is reduced, the purpose of narrowing a frame is achieved, and the display effect can be improved. And meanwhile, the overall width of the second signal line is increased, so that the current density in the second signal line is reduced, and heating of the second signal line caused by overhigh current density is avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel, a display module and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) is an active light-emitting device with a sandwich structure consisting of multiple organic layers and electrodes on both sides. At present, display screens based on AMOLED (Active-matrix organic Light-Emitting Diode) have been commercialized in the fields of smart phones, watches and laptops.

[0003] However, the performance of existing displays needs to be improved. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a display panel that is conducive to narrowing the frame and improving the display effect.

[0005] Based on the above purpose, the present application provides a display panel, the display panel having a display area and a non-display area, the non-display area at least partially surrounding the display area, at least part of the non-display area includes a first area and a second area, the first area, the second area and the display area are arranged along a first direction; the display panel also includes:

[0006] a plurality of first signal lines, the plurality of first signal lines extending along a second direction and being located in the second area, the second direction intersecting the first direction;

[0007] The second signal line is used to transmit a power signal. The second signal line includes a first sub-signal line and a second sub-signal line. The first sub-signal line is located in the first area, and the second sub-signal line is located in the second area and between adjacent first signal lines.

[0008] In one embodiment, the display panel further includes:

[0009] substrate;

[0010] The gate driving circuit is arranged on one side of the substrate, and the gate driving circuit is located in the second area and connected to the first signal line.

[0011] In one embodiment, the display panel further includes:

[0012] A first conductor layer is disposed on one side of the substrate;

[0013] A second conductor layer is disposed on a side of the first conductor layer away from the substrate;

[0014] The gate driving circuit is located in the first conductor layer, and the first signal line is located in the second conductor layer;

[0015] Preferably, an insulating layer is provided between the first conductor layer and the second conductor layer;

[0016] Preferably, the first conductor layer includes a plurality of first sub-conductor layers, and the gate driving circuit is distributed in the plurality of first sub-conductor layers;

[0017] Preferably, an insulating layer is provided between adjacent first sub-conductor layers;

[0018] Preferably, the display panel further includes:

[0019] A third conductor layer, located on a side of the second conductor layer away from the substrate and at least partially located in the second region;

[0020] A plurality of third signal lines are used for transmitting touch signals, and the plurality of third signal lines extend along the second direction and are located in the third conductor layer.

[0021] In one embodiment, the second conductor layer includes a plurality of second sub-conductor layers, a plurality of the first signal lines are distributed in the plurality of the second sub-conductor layers, and the second sub-signal lines are distributed between the first signal lines in the plurality of the second sub-conductor layers;

[0022] Preferably, an insulating layer is provided between adjacent second sub-conductor layers.

[0023] In one embodiment, the gate driving circuit includes a light emitting control circuit and a scanning circuit, part of the first signal lines are connected to the light emitting control circuit, and part of the first signal lines are connected to the scanning circuit;

[0024] Preferably, the light emitting control circuit is located on a side of the scanning circuit away from the display area.

[0025] In one embodiment, the display panel further includes:

[0026] a dam, disposed in the first region and located on a side of the second signal line away from the substrate;

[0027] Preferably, the dam includes a first dam and a second dam, and the first dam and the second dam are arranged along the first direction;

[0028] Preferably, the first sub-signal lines are continuously arranged in the first direction and form a metal block;

[0029] Preferably, an orthographic projection of the dam on the substrate is located within an orthographic projection of the first signal sub-line on the substrate.

[0030] In one embodiment, the second signal line includes a plurality of the second sub-signal lines, and the plurality of the second sub-signal lines are distributed between different first signal lines;

[0031] Preferably, the second sub-signal line is disposed between any two adjacent first signal lines.

[0032] In one embodiment, the non-display area includes a first non-display area and a second non-display area, the first non-display area, the display area and the second non-display area are arranged along the first direction, and the first non-display area and the second non-display area both include the first area and the second area;

[0033] Preferably, the non-display area further includes a third non-display area and a fourth non-display area, and the third non-display area, the display area and the fourth non-display area are arranged along the second direction.

[0034] Based on the same inventive concept, the present application also discloses a display module, which includes any one of the display panels described above.

[0035] Based on the same inventive concept, the present application also discloses a display device, which includes the display module described above.

[0036] Compared with the prior art, the display panel provided by the present application comprises a first sub-signal line and a second sub-signal line for transmitting a power signal, wherein the first sub-signal line is located in the first area, and the second sub-signal line is located in the second area and between adjacent first signal lines. This is beneficial for narrowing the width of the first area, thereby reducing the overall width of the non-display area, thereby achieving the purpose of narrowing the frame and improving the display effect.

[0037] At the same time, it is helpful to increase the overall width of the second signal line, thereby reducing the current density in the second signal line and avoiding heating of the second signal line due to excessive current density. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1is a schematic diagram of a related display panel;

[0040] Figure 2 A schematic diagram of a display panel in an embodiment of the present application;

[0041] Figure 3 for Figure 2 A magnified schematic diagram of the middle A area;

[0042] Figure 4 This is a schematic diagram of the film structure of a display panel in one embodiment of the present application;

[0043] Figure 5 This is a schematic diagram of a film structure of a display panel in another embodiment of the present application;

[0044] Figure 6 This is a schematic diagram of a film structure of a display panel in another embodiment of the present application;

[0045] Figure 7 This is a schematic diagram of a film structure of a display panel in another embodiment of the present application;

[0046] Figure 8 This is a schematic diagram of a film structure of a display panel in another embodiment of the present application;

[0047] Fig. 9 This is a schematic diagram of a film structure of a display panel in another embodiment of the present application;

[0048] Fig.10 FIG. 1 is a schematic diagram of a film structure of a display panel in another embodiment of the present application.

[0049] Marking Description:

[0050] 100, display panel; 110, display area; 120, non-display area; 121, first non-display area; 122, second non-display area; 123, third non-display area; 124, fourth non-display area; 130, first area; 140, second area;

[0051] 1. Substrate; M1, first conductor layer; M11, first sub-conductor layer; M2, second conductor layer; M21, second sub-conductor layer; M3, third conductor layer;

[0052] 2. The first signal line;

[0053] 3. Second signal line; 31. First sub-signal line; 32. Second sub-signal line;

[0054] 4. Gate drive circuit; 41. Light emitting control circuit; 42. Scanning circuit;

[0055] 5. Insulation layer;

[0056] 6. The third signal line;

[0057] 7. Dam; 71. First dam; 72. Second dam. DETAILED DESCRIPTION

[0058] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0059] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0060] Please refer to Figure 1 As shown, a related stretchable display panel 100 includes a display area 110 and a non-display area 120 (frame area) surrounding the display area 110 .

[0061] The signal line ELVSS for transmitting the negative power signal needs to pass through the non-display area 120 to transmit the cathode signal. In order to maintain a high display brightness, the signal line ELVSS needs to maintain a certain width, otherwise it will overheat due to excessive current density and then burn out. Therefore, there is a contradiction between the width requirement of the signal line ELVSS and the narrow frame of the product.

[0062] Based on this, the present application provides a display panel solution to solve the above problems.

[0063] Please refer to Figure 2-4 As shown, a display panel 100 provided in one embodiment of the present application has a display area 110 and a non-display area 120. The non-display area 120 at least partially surrounds the display area 110. At least part of the non-display area 120 includes a first area 130 and a second area 140. The first area 130, the second area 140 and the display area 110 are arranged along a first direction (the X direction in the figure).

[0064] The display panel 100 also includes a plurality of first signal lines 2 and second signal lines 3, wherein the plurality of first signal lines 2 extend along a second direction (such as the Y direction in the figure) and are located in the second area 140, and the second direction intersects with the first direction; the second signal lines 3 are used to transmit power signals, and the second signal lines 3 include a first sub-signal line 31 and a second sub-signal line 32, the first sub-signal line 31 is located in the first area 130, and the second sub-signal line 32 is located in the second area 140 and between adjacent first signal lines 2.

[0065] In the figure, M represents the size of the first region 130 in the first direction, and N represents the size of the second region 140 in the first direction.

[0066] The display panel 100 provided in this embodiment comprises a first sub-signal line 31 and a second sub-signal line 32 for transmitting a power signal, wherein the first sub-signal line 31 is located in the first area 130, and the second sub-signal line 32 is located in the second area 140 and between adjacent first signal lines 2. This helps to narrow the width of the first area 130, thereby reducing the overall width of the non-display area 120, thereby achieving the purpose of narrowing the frame and helping to improve the display effect.

[0067] At the same time, it is helpful to increase the overall width of the second signal line 3, thereby reducing the current density in the second signal line 3 and avoiding heating of the second signal line 3 due to excessive current density.

[0068] Specifically, the display panel 100 in this embodiment can reduce the overall width of the non-display area 120 while meeting the overall width requirement of the second signal line 3, so as to achieve the purpose of narrowing the frame. Alternatively, while keeping the overall width of the non-display area 120 unchanged, the overall width of the second signal line 3 is increased, thereby reducing the current density in the second signal line 3 and avoiding the second signal line 3 from heating due to excessive current density. Alternatively, while increasing the overall width of the second signal line 3, the overall width of the non-display area 120 is reduced. The overall width of the second signal line 3 is the sum of the widths of the first sub-signal line 31 and the second sub-signal line 32. The larger the overall width, the larger the cross-sectional area and the smaller the current density.

[0069] Preferably, the second signal line 3 is used to transmit a negative power signal.

[0070] Please continue to refer to Figure 4 As shown, in one embodiment, the second signal line 3 includes a plurality of second sub-signal lines 32, and the plurality of second sub-signal lines 32 are distributed between different first signal lines 2, which is beneficial to increase the overall width of the second signal line 3, narrow the width of the first area 130, and further reduce the overall width of the non-display area 120.

[0071] Preferably, a second sub-signal line 32 is disposed between any two adjacent first signal lines 2 , which is beneficial to further increase the overall width of the second signal line 3 and / or achieve a narrower frame.

[0072] Please refer to Figure 5 As shown, in one embodiment, the display panel 100 further includes a substrate 1 and a gate driving circuit 4, the gate driving circuit 4 is disposed on one side of the substrate 1, the gate driving circuit 4 is located in the second area 140 and is connected to the first signal line 2, and the first signal line 2 is used to transmit the signal in the gate driving circuit 4. The gate driving circuit 4 and the first signal line 2 are located in different layers, and the first signal line 2 and the gate driving circuit 4 are correspondingly arranged in the thickness direction of the display panel 100 (such as the Z direction in the figure). Since the gate driving circuit 4 is difficult to compress in the first direction, a plurality of first signal lines 2 are arranged at intervals along the first direction, and the second sub-signal line 32 can be arranged between adjacent first signal lines 2.

[0073] Please refer to Figure 6 As shown, in one embodiment, the display panel 100 further includes a first conductor layer M1 and a second conductor layer M2, wherein the first conductor layer M1 is disposed on one side of the substrate 1, and the second conductor layer M2 is disposed on a side of the first conductor layer M1 away from the substrate 1; the gate drive circuit 4 is located on the first conductor layer M1, and the first signal line 2 is located on the second conductor layer M2. The gate drive circuit 4 is located on the first conductor layer M1 relatively close to the substrate 1, and the first signal line 2 is located on the second conductor layer M2 quite far from the substrate 1. After the gate drive circuit 4 is prepared, the first sub-signal line 31 and the second sub-signal line 32 can be prepared and formed at the same time.

[0074] Preferably, an insulating layer 5 is disposed between the first conductor layer M1 and the second conductor layer M2 to isolate the first conductor layer M1 from the second conductor layer M2 to avoid short circuit and interference between different signals.

[0075] Preferably, the first conductor layer M1 includes a plurality of first sub-conductor layers M11, and the gate drive circuit 4 is distributed in the plurality of first sub-conductor layers M11. Different first sub-conductor layers M11 are used to form different parts of the gate drive circuit 4. Meanwhile, the gate drive circuit 4 is distributed in the plurality of first sub-conductor layers M11, which is conducive to making the gate drive circuit 4 more compact, thereby reducing its size in the first direction, and is conducive to achieving a narrower frame.

[0076] Preferably, an insulating layer 5 is disposed between adjacent first sub-conductor layers M11 to isolate adjacent first sub-conductor layers M11 to avoid short circuits and interference between different signals.

[0077] Please refer to Figure 7As shown, in one embodiment, the display panel 100 also includes a third conductor layer M3 and a plurality of third signal lines 6, the third conductor layer M3 is located on a side of the second conductor layer M2 away from the substrate 1 and is at least partially located in the second area 140; the plurality of third signal lines 6 are used to transmit touch signals, and the plurality of third signal lines 6 extend along the second direction and are located in the third conductor layer M3.

[0078] The third signal line 6 is used to realize the touch function, and the second sub-signal line 32 is arranged between the third conductor layer M3 and the first conductor layer M1, which is conducive to realizing signal shielding between the touch signal and the gate driving circuit 4 and avoiding coupling between signals of different layers.

[0079] Please refer to Figure 8 As shown, in one embodiment, the second conductor layer M2 includes multiple second sub-conductor layers M21, multiple first signal lines 2 are distributed in the multiple second sub-conductor layers M21, and the second sub-signal lines 32 are distributed between the first signal lines 2 in the multiple second sub-conductor layers M21, which is beneficial to further increase the overall width of the second signal lines 3 and / or achieve a narrower border.

[0080] Preferably, an insulating layer 5 is provided between adjacent second sub-conductor layers M21 to isolate adjacent second sub-conductor layers M21 to avoid short circuit and interference between different signals.

[0081] Please refer to Fig. 9 As shown, in one embodiment, the gate driving circuit 4 includes a light emitting control circuit 41 and a scanning circuit 42, and part of the first signal lines 2 are connected to the light emitting control circuit 41, and part of the first signal lines 2 are connected to the scanning circuit 42. The light emitting control circuit 41 is used to implement the light emitting control function, and the scanning circuit 42 is used to implement the scanning function. Preferably, the light emitting control circuit 41 is located on a side of the scanning circuit 42 away from the display area 110.

[0082] Please refer to Fig.10 As shown, in one embodiment, the display panel 100 further includes a dam 7, which is disposed in the first area 130 and located on a side of the second signal line 3 away from the substrate 1. The dam 7 is used to prevent the organic material in the encapsulation layer from overflowing to ensure the encapsulation effect.

[0083] Preferably, the dam 7 includes a first dam 71 and a second dam 72, which are arranged along a first direction, and if the inner second dam 72 overflows, the overflowing organic material will be isolated between the inner second dam 72 and the outer first dam 71. In another embodiment, the dam 7 may further include a third dam, etc.

[0084] In one embodiment, the first sub-signal lines 31 are continuously arranged in the first direction and form a metal block, which can further increase the overall width of the second signal line 3 and reduce the current density.

[0085] Preferably, the orthographic projection of the dam 7 on the substrate 1 is located within the orthographic projection of the first sub-signal line 31 on the substrate 1 to avoid the existence of the dam 7 increasing the frame width.

[0086] Please continue to refer to Figure 2 As shown, in one embodiment, the non-display area 120 includes a first non-display area 121 and a second non-display area 122, the first non-display area 121, the display area 110 and the second non-display area 122 are arranged along a first direction, and the first non-display area 121 and the second non-display area 122 both include a first area 130 and a second area 140.

[0087] Specifically, the signal of the gate driving circuit 4 is input into the display area 110 from the non-display area 120 on both sides of the display area 110. Therefore, the first non-display area 121 and the second non-display area 122 both include the first area 130 and the second area 140, which can narrow the non-display area 120 on both sides of the display area 110.

[0088] Please continue to refer to Figure 2 As shown, in one embodiment, the non-display area 120 also includes a third non-display area 123 and a fourth non-display area 124, the third non-display area 123, the display area 110 and the fourth non-display area 124 are arranged along the second direction, and the display area 110 is completely surrounded by the non-display area 120.

[0089] Furthermore, a control unit (IC) is disposed at one end of the fourth non-display area 124 (lower frame), and one end of the second signal line 3 close to the fourth non-display area 124 is connected to the control unit.

[0090] Based on the same inventive concept, another embodiment of the present application further discloses a display module, which includes the display panel 100 in the above embodiment. By dividing the second signal line 3 for transmitting the power signal into a first sub-signal line 31 and a second sub-signal line 32, the first sub-signal line 31 is located in the first area 130, and the second sub-signal line 32 is located in the second area 140 and between multiple first signal lines 2, it is beneficial to narrow the width of the first area 130, and then reduce the overall width of the non-display area 120, so as to achieve the purpose of narrowing the frame, which is beneficial to improving the display effect.

[0091] At the same time, it is helpful to increase the overall width of the second signal line 3, thereby reducing the current density in the second signal line 3, avoiding the second signal line 3 from heating due to excessive current density, and improving the performance of the display module.

[0092] Based on the same inventive concept, another embodiment of the present application further discloses a display device, which includes the display module in the above embodiment. Further, the display device includes a mobile phone, VR equipment, computer, television, car display equipment, etc.

[0093] A display device provided in this embodiment has a display module in which a second signal line 3 for transmitting a power signal includes a first sub-signal line 31 and a second sub-signal line 32. The first sub-signal line 31 is located in the first area 130, and the second sub-signal line 32 is located in the second area 140 and between adjacent first signal lines 2. This is beneficial for narrowing the width of the first area 130, and further reducing the overall width of the non-display area 120, thereby achieving the purpose of narrowing the frame and improving the display effect.

[0094] At the same time, it is helpful to increase the overall width of the second signal line 3, thereby reducing the current density in the second signal line 3, avoiding the second signal line 3 from heating due to excessive current density, and improving the performance of the display device.

[0095] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0096] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0097] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A display panel, characterized in that: The display panel has a display area and a non-display area, the non-display area at least partially surrounds the display area, at least part of the non-display area includes a first area and a second area, the first area, the second area and the display area are arranged along a first direction; the display panel further includes: a plurality of first signal lines, the plurality of first signal lines extending along a second direction and being located in the second area, the second direction intersecting the first direction; The second signal line is used to transmit a power signal. The second signal line includes a first sub-signal line and a second sub-signal line. The first sub-signal line is located in the first area, and the second sub-signal line is located in the second area and between adjacent first signal lines.

2. The display panel according to claim 1, characterized in that: The display panel further includes: substrate; The gate driving circuit is arranged on one side of the substrate, and the gate driving circuit is located in the second area and connected to the first signal line.

3. The display panel according to claim 2, characterized in that: The display panel further includes: A first conductor layer is disposed on one side of the substrate; A second conductor layer is disposed on a side of the first conductor layer away from the substrate; The gate driving circuit is located in the first conductor layer, and the first signal line is located in the second conductor layer; Preferably, an insulating layer is provided between the first conductor layer and the second conductor layer; Preferably, the first conductor layer includes a plurality of first sub-conductor layers, and the gate driving circuit is distributed in the plurality of first sub-conductor layers; Preferably, an insulating layer is provided between adjacent first sub-conductor layers; Preferably, the display panel further includes: A third conductor layer, located on a side of the second conductor layer away from the substrate and at least partially located in the second region; A plurality of third signal lines are used for transmitting touch signals, and the plurality of third signal lines extend along the second direction and are located in the third conductor layer.

4. The display panel according to claim 3, characterized in that: The second conductor layer includes a plurality of second sub-conductor layers, the plurality of first signal lines are distributed in the plurality of second sub-conductor layers, and the second sub-signal lines are distributed between the first signal lines in the plurality of second sub-conductor layers; Preferably, an insulating layer is provided between adjacent second sub-conductor layers.

5. The display panel according to claim 2, characterized in that: The gate driving circuit includes a light emitting control circuit and a scanning circuit, part of the first signal lines are connected to the light emitting control circuit, and part of the first signal lines are connected to the scanning circuit; Preferably, the light emitting control circuit is located on a side of the scanning circuit away from the display area.

6. The display panel according to claim 2, characterized in that: The display panel further includes: a dam, disposed in the first region and located on a side of the second signal line away from the substrate; Preferably, the dam includes a first dam and a second dam, and the first dam and the second dam are arranged along the first direction; Preferably, the first sub-signal lines are continuously arranged in the first direction and form a metal block; Preferably, an orthographic projection of the dam on the substrate is located within an orthographic projection of the first sub-signal line on the substrate.

7. The display panel according to claim 1, characterized in that: The second signal line includes a plurality of second sub-signal lines, and the plurality of second sub-signal lines are distributed between different first signal lines; Preferably, the second sub-signal line is disposed between any two adjacent first signal lines.

8. The display panel according to claim 1, characterized in that: The non-display area includes a first non-display area and a second non-display area, the first non-display area, the display area and the second non-display area are arranged along the first direction, and the first non-display area and the second non-display area both include the first area and the second area; Preferably, the non-display area further includes a third non-display area and a fourth non-display area, and the third non-display area, the display area and the fourth non-display area are arranged along the second direction.

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

10. A display device, characterized in that: Comprising the display module as claimed in claim 9.

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