Display panel and display device

Abstract

The invention provides a display panel and a display device. Specifically, the display panel comprises a display area and a peripheral area arranged around the display area; wherein the peripheral area comprises a protruding sub-area protruding towards the display area; the protruding sub-area is provided with a cutting test line, and the cutting test line is located on the side, close to the display area, of the protruding sub-area and is a certain distance away from the display area. According to the technical scheme, the cutting precision can be controlled through the cutting test line, and cutting damage is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] With the continuous development of Active Matrix Organic Light Emitting Diode (AMOLED) display technology and the increasing demands of users for display technology, AMOLED is playing an increasingly important role in the mid-sized (e.g., 10-inch to 49-inch) panel market. In related technologies, the peripheral area of ​​the display panel typically features protruding sub-regions that bulge towards the display area, providing space for devices such as cameras, sensors, or pads. However, because mid-sized panels use rigid substrates, the fabrication of these protruding sub-regions requires special cutting designs. Summary of the Invention

[0003] In view of this, the purpose of this disclosure is to provide a display panel and a display device.

[0004] For the purposes described above, this disclosure provides a display panel, including a display area and a peripheral area disposed around the display area;

[0005] The peripheral area includes a protruding sub-region that protrudes toward the display area;

[0006] The protruding sub-region is provided with a cutting test line, which is located on the side of the protruding sub-region closer to the display area and is at a certain distance from the display area.

[0007] Based on the same inventive concept, embodiments of this disclosure also provide a display device, including the display panel described in any of the foregoing claims.

[0008] As can be seen from the above description, the present disclosure provides a display panel and a display device. The display panel includes a display area and a peripheral area surrounding the display area. The peripheral area includes a protruding sub-region protruding towards the display area. A cutting test line is provided in the protruding sub-region, and the cutting test line is located on the side of the protruding sub-region closer to the display area and at a certain distance from the display area. This technical solution utilizes the cutting test line to control the cutting accuracy and reduce cutting damage. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1A This diagram illustrates the structure of a display panel provided by related technologies.

[0011] Figure 1B A schematic diagram of another display panel provided by related technologies is shown;

[0012] Figure 2A This diagram illustrates the structure of yet another display panel provided in an embodiment of the present disclosure;

[0013] Figure 2B Show Figure 2A An enlarged view of the dashed box A in the image;

[0014] Figure 3A This diagram illustrates a cross-sectional view of a display panel according to an embodiment of the present disclosure.

[0015] Figure 3B This diagram illustrates a cross-sectional view of another display panel provided in an embodiment of the present disclosure.

[0016] Figure 3C This diagram shows a cross-sectional view of another display panel provided in an embodiment of the present disclosure. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Figure 1A This diagram illustrates the structure of a display panel provided by related technologies. Figure 1B This diagram illustrates the structure of another display panel provided by related technologies. For example... Figure 1A As shown, the display panel 100 includes a display area 101 and a peripheral area 102 surrounding the display area 101. The peripheral area 102 includes a protruding sub-region 1021 protruding towards the display area 101; the protruding sub-region 1021 includes a cutting area 1022. Figure 1B The protruding sub-region 1021 is shown after the area to be cut 1022 has been removed.

[0020] Here, the edge of the area to be cut 1022 near the display area 101 can be... Figure 1A The straight line shown can also be a curve with a certain curvature, and this disclosure is not limiting in this regard. It should be understood that when the edge of the area to be cut 1022 is a curve with a certain curvature, ideally, the edge of the protruding sub-area 1021 after cutting will also have a corresponding curvature.

[0021] When the display panel 100 uses a flexible substrate, the area to be cut 1022 can be cut. When the display panel 100 uses a rigid substrate, since the area to be cut 1022 protrudes towards the display area 101, especially when the edge of the area to be cut 1022 is a curve with a certain curvature, the cutting accuracy is difficult to control and it is difficult to remove it by a single cutting method (such as laser cutting).

[0022] Laser forming and grinding / polishing, used alone or in combination, can be used to cut the area 1022, which can then be removed. Therefore, the precision of removing the area 1022 becomes a crucial factor affecting the quality of the display panel. However, relevant technologies have not yet provided an effective solution for controlling the precision of the cutting.

[0023] In view of this, the present disclosure provides a display panel and a display device. The display panel includes a display area and a peripheral area surrounding the display area. The peripheral area includes a protruding sub-region protruding towards the display area. A cutting test line is provided in the protruding sub-region, located on the side of the protruding sub-region closest to the display area and at a certain distance from the display area. This technical solution utilizes the cutting test line to control cutting accuracy and reduce cutting damage.

[0024] Figure 2A This diagram illustrates the structure of yet another display panel provided in an embodiment of the present disclosure; Figure 2B Show Figure 2A An enlarged view of the dashed box A in the diagram. (See attached image.) Figure 2A and Figure 2B As shown, the display panel 200 includes a display area 201 and a peripheral area 202 surrounding the display area 201. Further, the peripheral area 202 includes a protruding sub-region 2025 protruding towards the display area 201; the protruding sub-region 2025 includes a cutting area 203. (As shown...) Figure 2B As shown, a cutting channel 2031 is provided on the edge of the area to be cut 203 near the display area 201. It should be noted that the cutting channel 2031 can extend to the area of ​​the peripheral area 202 that does not protrude toward the display area 201, and the cutting channel 2031 located in the area of ​​the peripheral area 202 that does not protrude toward the display area 201 can be cut by laser cutting.

[0025] Here, the method of cutting the area 203 to be cut can be laser forming, grinding and polishing chamfering, or a combination of both. This disclosure does not limit this method.

[0026] In order to control the accuracy of the above cutting, a cutting test line 2022 is provided in the protruding sub-region 2025. The cutting test line 2022 is located on the side of the protruding sub-region 2025 close to the display area 201 and there is a certain distance between it and the display area 201.

[0027] This structural design allows for the measurement of cutting progress during the cutting process by testing the distance between the cutting edge and the cutting test line 2022. When the distance between the cutting edge and the cutting test line 2022 reaches a preset range, it indicates that the cutting position has reached the preset range, and the cutting can be indicated as complete, thus achieving precise control over the cutting process. Furthermore, setting a certain distance between the cutting test line 2022 and the display area 201 effectively avoids damage to the display area 201 during the cutting operation.

[0028] In some embodiments, the cutting test line 2022 is laid along the edge 2024 of the area to be cut 203 near the display area 201 and there is a certain distance between the cutting test line 2022 and the edge 2024. Optionally, the cutting test line 2022 is laid along the side of the cutting path 2031 near the display area 201.

[0029] It should be noted that, as Figure 2B As shown, the cutting test line 2022 can extend to the area of ​​the surrounding area 202 other than the protruding sub-area 2025, and this disclosure does not limit it.

[0030] In some embodiments, the peripheral area 202 further includes a crack dam 2021, with the cutting test line 2022 located on the side of the crack dam 2021 away from the display area 201. This arrangement not only facilitates cutting tests but also allows for effective control of potential cracks that may occur on the cutting test line 2022 using the crack dam 2021, ensuring the quality stability of the display panel.

[0031] In some embodiments, the peripheral area 202 further includes an alignment mark 2023; the alignment mark 2023 is located on the side of the crack blocking groove 2021 near the display area 201. Here, the shape of the alignment mark 2023 can be cross-shaped, triangular, trapezoidal, etc., and this disclosure does not limit it. By using the mark 2023, the alignment accuracy of the cutting can be improved, thereby improving the precision of the cutting.

[0032] Figure 3A This diagram illustrates a cross-sectional structural schematic of a display panel according to an embodiment of the present disclosure. Figure 3A The display panel includes a substrate 301, a first metal layer 302, a first inorganic layer 303, a second metal layer 304, a second inorganic layer 305, a third metal layer 306, an organic planarization layer 307, a fourth metal layer 308, and other layers 309. It should be noted that the other layers 309 may include organic light-emitting layers, organic encapsulation layers, etc., which will not be described in detail in this disclosure.

[0033] Here, the substrate 301 can be a rigid substrate, such as a glass substrate. The first metal layer 302, the first inorganic layer 303, the second metal layer 304, the second inorganic layer 305, the third metal layer 306, the organic planarization layer 307, and the fourth metal layer 308 can form the driving circuit of the display panel, including but not limited to driving transistors and driving traces. Exemplarily, the first metal layer 302 and the second metal layer 304 can form the first electrode (e.g., the gate) of the driving transistor, and the third metal layer 306 and the fourth metal layer 308 can form the second stage (e.g., the source) and the third stage (e.g., the drain) of the driving transistor.

[0034] In some embodiments, the test line 2022 is disposed in the same layer as any one of the first metal layer 302, the second metal layer 304, the third metal layer 306, and the fourth metal layer 308. This method allows the test line 2022 to be formed simultaneously with any of the metal layers, eliminating the need for additional steps and offering advantages of simplicity and convenience. For example, the test line 2022 and the first metal layer 302 are disposed in the same layer.

[0035] In some embodiments, the crack-blocking groove 2021 is formed by a first metal layer 302, a second metal layer 304, a third metal layer 306, or a fourth metal layer 308. This method allows the crack-blocking groove 2021 to be formed simultaneously with any of the metal layers, eliminating the need for additional steps and offering the advantages of simplicity and convenience.

[0036] In some embodiments, the alignment mark 2023 is disposed in the same layer as any one of the first metal layer 302, the second metal layer 304, the third metal layer 306, and the fourth metal layer 308.

[0037] To reduce the impact of cutting the area to be cut 203 on the stability of the display panel and improve the controllability of the cutting operation, in some embodiments, such as Figure 3B As shown, the display panel corresponds to the position of the area to be cut 203. The substrate 301 is stacked with a first inorganic layer 303 and a second inorganic layer 305. There is no organic planarization layer 307 and other organic light-emitting layers and organic encapsulation layers in the other layers 309, thereby reducing the influence of organic planarization layer 307, organic light-emitting layer, organic encapsulation layer, etc. on the cutting operation.

[0038] In other words, the orthographic projections of each organic layer (e.g., organic planarization layer 307, organic light-emitting layer, organic encapsulation layer) onto the substrate 301 and the orthographic projection of the area to be cut 203 onto the substrate 301 do not overlap.

[0039] In some alternative embodiments, such as Figure 3C As shown, the display panel corresponds to the position of the area to be cut 203. The substrate 301 does not have the first inorganic layer 303, the second inorganic layer 305, the organic planarization layer 307, or the organic light-emitting layer and organic encapsulation layer in the other layers 309, thereby reducing the influence of the first inorganic layer 303, the second inorganic layer 305, the organic planarization layer 307, the organic light-emitting layer, the organic encapsulation layer, etc. on the cutting operation.

[0040] In other words, the orthographic projections of each inorganic layer (first inorganic layer 303, second inorganic layer 305) and each organic layer (e.g., organic planarization layer 307, organic light-emitting layer, organic encapsulation layer) onto the substrate 301 do not overlap with the orthographic projection of the area to be cut 203 onto the substrate 301.

[0041] Based on the same inventive concept, corresponding to any of the methods in the above embodiments, this disclosure also provides a display panel. For example... Figure 2A and Figure 2B As shown, the display panel 200 includes a display area 201 and a peripheral area 202 surrounding the display area 201; wherein, the peripheral area 202 includes a protruding sub-area 2025 protruding towards the display area 201; the protruding sub-area 2025 is provided with a cutting test line 2022, the cutting test line 2022 being located on the side of the protruding sub-area 2025 closest to the display area 201 and having a certain distance between it and the display area 201. For example, the distance between the protruding sub-area 2025 and the display area 201 can be 0.6–0.8 mm, for example 0.7 mm.

[0042] In some embodiments, the peripheral area 202 further includes a crack blocking groove 2022, and the cutting test line 2022 is located on the side of the crack blocking groove 2022 away from the display area 201.

[0043] In some embodiments, the peripheral area 202 further includes an alignment mark 2023; the alignment mark 2023 is located on the side of the crack blocking groove 2022 near the display area 201.

[0044] In some embodiments, such as Figures 3A-3B As shown, the display panel includes a substrate 301, which is a rigid substrate.

[0045] In some embodiments, the display panel further includes one or more of a first metal layer 302, a second metal layer 304, a third metal layer 306, and a fourth metal layer 308 disposed on a substrate.

[0046] The cutting test line 2022 is disposed in the same layer as any one of the first metal layer 302, the second metal layer 304, the third metal layer 306, and the fourth metal layer 308.

[0047] In some embodiments, the peripheral area 202 further includes a crack blocking groove 2022; the crack blocking groove 2022 is formed by a first metal layer 302, a second metal layer 304, a third metal layer 306 or a fourth metal layer 308.

[0048] In some embodiments, the peripheral area 202 further includes an alignment mark 2023; the alignment mark 2023 is disposed in the same layer as any one of the first metal layer 302, the second metal layer 304, the third metal layer 306 and the fourth metal layer 308.

[0049] In some embodiments, the protruding sub-region 2025 further includes a cut area 203, which is located on the side of the protruding sub-region 2025 away from the display area 201; the display panel further includes at least one organic layer (e.g., an organic planarization layer 307, an organic light-emitting layer, or an organic encapsulation layer); at least one organic layer is disposed on the substrate 301.

[0050] Wherein, the orthographic projection of at least one organic layer onto the substrate 301 and the orthographic projection of the area to be cut 203 onto the substrate 301 do not overlap (reference). Figure 3B ).

[0051] In some embodiments, such as Figure 3A ~as Figure 3C As shown, the display panel also includes at least one inorganic layer (e.g., a first inorganic layer 303 and a second inorganic layer 305); the at least one inorganic layer is disposed on the substrate 301;

[0052] Wherein, the orthographic projection of at least one inorganic layer onto the substrate 301 overlaps with the orthographic projection of the area to be cut 203 onto the substrate 301 (see reference). Figure 3B ) or no overlap (reference) Figure 3C ).

[0053] It should be noted that after the area to be cut 203 is cut, a portion of the area to be cut 203 may remain on the display panel, and this disclosure does not limit this.

[0054] Based on the same inventive concept, corresponding to the methods of any of the above embodiments, this disclosure also provides a display device. The display device includes the display panel described in any of the foregoing embodiments.

[0055] The display device of the above embodiments has the beneficial effects of the corresponding display panel embodiments, which will not be repeated here.

[0056] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this disclosure (including the claims) is limited to these examples; within the framework of this disclosure, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this disclosure as described above, which are not provided in detail for the sake of brevity.

[0057] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this disclosure, the provided drawings may or may not show well-known power / ground connections to integrated circuit (IC) chips and other components. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this disclosure, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this disclosure will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuitry) have been set forth to describe exemplary embodiments of this disclosure, it will be apparent to those skilled in the art that the embodiments of this disclosure may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0058] Although this disclosure has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0059] This disclosure is 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 this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display panel, characterized in that, Includes a display area and a surrounding area. The peripheral area includes a protruding sub-region that protrudes toward the display area; The protruding sub-region is provided with a cutting test line, which is located on the side of the protruding sub-region closer to the display area and is at a certain distance from the display area.

2. The display panel according to claim 1, characterized in that, The surrounding area also includes a crack blocking groove, and the cutting test line is located on the side of the crack blocking groove away from the display area.

3. The display panel according to claim 2, characterized in that, The peripheral area also includes alignment marks; the alignment marks are located on the side of the crack blocking groove closest to the display area.

4. The display panel according to any one of claims 1 to 3, characterized in that, The display panel includes a substrate, which is a rigid substrate.

5. The display panel according to claim 4, characterized in that, The display panel further includes one or more of a first metal layer, a second metal layer, a third metal layer, and a fourth metal layer disposed on the substrate. The cutting test line is disposed in the same layer as any one of the first metal layer, the second metal layer, the third metal layer, and the fourth metal layer.

6. The display panel according to claim 5, characterized in that, The surrounding area also includes a crack blocking groove; the crack blocking groove is formed by the first metal layer, the second metal layer, the third metal layer or the fourth metal layer.

7. The display panel according to claim 5, characterized in that, The peripheral area also includes alignment marks; the alignment marks are disposed on the same layer as any one of the first metal layer, the second metal layer, the third metal layer, and the fourth metal layer.

8. The display panel according to claim 4, characterized in that, The protruding sub-region includes a region to be cut, which is located on the side of the protruding sub-region away from the display area; the display panel further includes at least one organic layer; the at least one organic layer is disposed on the substrate. Wherein, the orthographic projection of the at least one organic layer onto the substrate and the orthographic projection of the area to be cut onto the substrate do not overlap.

9. The display panel according to claim 8, characterized in that, The display panel further includes at least one inorganic layer; the at least one inorganic layer is disposed on the substrate. Wherein, the orthographic projection of the at least one inorganic layer on the substrate and the orthographic projection of the area to be cut on the substrate partially overlap or do not overlap.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 9.

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