Display panel and display device
By introducing a communication groove into the display panel, the first cutting channel and the second cutting channel are connected, which solves the problem that bubbles cannot be discharged during the preparation of OLED products, and improves the product shipment specifications and yield rate.
Patent Information
- Application Number
- CN202421507944.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the preparation of existing OLED products, the cutting channel forms a closed space with the polarizer or support film, resulting in the formation of air bubbles and cannot be completely eliminated through degassing, affecting the display effect and reducing the yield rate.
A first cutting path and a second cutting path are introduced in the display panel, and an auxiliary functional layer is provided between the two, and a communication groove is provided on the auxiliary functional layer to communicate the first cutting path and the second cutting path, thereby allowing air bubbles to be discharged through the communication groove.
The first cutting channel and the second cutting channel are connected through the communication groove, effectively discharge the bubbles in the first cutting channel, avoid the bubbles from being derived to the display area, improve the product shipment specifications and improve the yield rate.
Smart Images
Figure CN222721939U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of display technology, and in particular to a display panel and a display device. Background Art
[0002] The current OLED (Organic Light-Emitting Diode) product preparation process is equipped with a cutting path, which is used to cut OLED products. In the display panel preparation process, a support film or polarizer needs to be prepared above the OLED product. At this time, the cutting path and the polarizer or support film will form a closed space. Air will form bubbles in the closed space formed by the cutting path and the polarizer or support film. The bubbles cannot be completely removed by degassing. The bubbles will gather into large bubbles during the degassing process and derive to the display area, resulting in display abnormalities and loss of yield. Utility Model Content
[0003] The utility model provides a display panel and a display device to solve the problem that after the existing cutting path forms a closed space, air in the cutting path is easy to form bubbles and cannot be completely removed by degassing.
[0004] According to one aspect of the present invention, a display panel is provided, comprising a display area and a non-display area; the display panel further comprises:
[0005] A first cutting path is located in the non-display area;
[0006] A second cutting line is located in the non-display area and on a side of the first cutting line away from the display area;
[0007] The auxiliary functional layer is located between the first cutting street and the second cutting street. The auxiliary functional layer is provided with at least one connecting groove, and the connecting groove connects the first cutting street and the second cutting street.
[0008] Optionally, the cross-sectional shape of the connecting groove includes a polygon.
[0009] Optionally, the depth of the connecting groove is greater than 3 micrometers and not greater than the thickness of the auxiliary functional layer.
[0010] Optionally, the width of the communication groove is greater than zero and not greater than the length of a side edge of the display area adjacent to the first cutting road communicating with the communication groove.
[0011] Optionally, the connecting groove and the first cutting path are arranged at a certain angle, and the angle is greater than 0° and less than 180°.
[0012] Optionally, the display panel includes a plurality of the communicating grooves, and cross-sectional shapes of the communicating grooves are partially different or all the same.
[0013] Optionally, a plurality of the connecting grooves are symmetrically arranged around the display area.
[0014] Optionally, a plurality of the communicating grooves are arranged at equal intervals around the display area.
[0015] Optionally, at least two of the communicating grooves are arranged in the non-display area along the bending portion of the first cutting path.
[0016] According to another aspect of the present invention, a display device is provided, comprising the display panel described in any one of the first aspects.
[0017] The technical solution provided by the embodiment of the utility model connects the first cutting path with the second cutting path through the connecting groove. After the process of attaching the support film or polarizer is completed, the bubbles in the first cutting path can be connected to the second cutting path through the connecting groove and discharged, thereby preventing the bubbles in the first cutting path from being unable to be discharged through degassing, avoiding the bubbles from being derived to the display area, ensuring the product shipping specifications, and improving the yield rate.
[0018] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 A schematic diagram of a top view structure of a display panel provided by an embodiment of the utility model;
[0021] Figure 2 A schematic diagram of a partial cross-sectional structure along the X direction of a display panel provided by an embodiment of the utility model;
[0022] Figure 3 A schematic diagram of a partial cross-sectional structure along the Y direction of a display panel provided by an embodiment of the utility model;
[0023] Figure 4 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model;
[0024] Figure 5 A schematic diagram of a partial cross-sectional structure along the Y direction of a display panel provided by an embodiment of the utility model;
[0025] Figure 6 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model;
[0026] Figure 7 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model;
[0027] Figure 8 A schematic diagram of a top view of another display panel provided in an embodiment of the utility model. DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.
[0030] Figure 1 A schematic diagram of the top structure of a display panel provided in an embodiment of the utility model. Figure 2 This is a schematic diagram of a partial cross-sectional structure of a display panel along the X direction provided by an embodiment of the present utility model. Figure 1 and 2 The display panel includes a display area AA and a non-display area NAA; the display panel also includes: a first cutting path 100, located in the non-display area NAA; a second cutting path 200, located in the non-display area NAA, and located on the side of the first cutting path 100 away from the display area AA; an auxiliary function layer 300, located between the first cutting path 100 and the second cutting path 200, and at least one connecting groove 400 is arranged on the auxiliary function layer 300, and the connecting groove 400 connects the first cutting path 100 and the second cutting path 200.
[0031] Specifically, the first cutting path 100 can be a connected groove, which provides an identification function when cutting the contour shape of the display product to be prepared. The first cutting path 100 is located in the non-display area NAA and on the periphery of the display area AA. Laser cutting along the first cutting path 100 can cut the unnecessary non-display area NAA, thereby retaining the display area portion of the display product to be prepared. The second cutting path 200 is arranged in the non-display area NAA and on the side of the first cutting path 100 away from the display area AA. After the process of attaching the support film or polarizer is completed, preliminary cutting is performed along the second cutting path 200 to ensure that the outer contour of the display product cut along the first cutting path 100 is consistent; the second cutting path 200 can protect the first cutting path 100 and the display area AA on its inner side, and prevent cracks caused by collisions during the preparation process from directly affecting the display area AA, thereby causing a loss of yield. The auxiliary functional layer 300 is a multi-layer stacked structure located between the first cutting path 100 and the second cutting path 200. The bottom layer of the auxiliary function layer 300 may be a substrate 310 supporting the display panel; the middle part of the auxiliary function layer 300 includes a multi-layer encapsulation layer 320 and a flat layer 330 for improving encapsulation reliability, and the encapsulation layer 320 may be a silicon nitride or silicon oxide compound; the top layer of the auxiliary function layer 300 may be a pixel definition layer 340. Part of the film layer on the top of the auxiliary function layer 300 is etched to form a connecting groove 400, which connects the first cutting path 100 and the second cutting path 200. Exemplarily, Figure 1 It is shown that four connecting grooves 400 are arranged around the first cutting path 100 in the non-display area NAA. The specific number and arrangement of the connecting grooves 400 are not specifically limited in this embodiment. After the process of attaching the support film or polarizer is completed, the bubbles in the first cutting path 100 can be connected to the second cutting path 200 through the connecting grooves 400 for discharge, thereby preventing the bubbles in the first cutting path 100 from being unable to be discharged and being derived to the display area, ensuring the product shipping specifications and improving the yield rate.
[0032] The technical solution provided by the embodiment of the utility model connects the first cutting path with the second cutting path through the connecting groove. After the process of attaching the support film or polarizer is completed, the bubbles in the first cutting path can be connected to the second cutting path through the connecting groove and discharged, thereby preventing the bubbles in the first cutting path from being unable to be discharged through degassing, avoiding the bubbles from being derived to the display area, ensuring the product shipping specifications, and improving the yield rate.
[0033] Optionally, Figure 3 A schematic diagram of a partial cross-sectional structure along the Y direction of the display panel provided by an embodiment of the utility model. Figure 3 The cross-sectional shape of the communication groove 400 includes a polygon.
[0034] Specifically, the cross-sectional shape of the connecting groove 400 can be a quadrilateral structure such as a rectangle, a square, a trapezoid, or other polygonal structures. This embodiment does not specifically limit the cross-sectional shape of the connecting groove 400. For example, Figure 3 It is shown that two connecting grooves 400 are arranged on a side of the display area AA, and the cross-sectional shapes of the two connecting grooves 400 are both rectangular.
[0035] Optionally, based on the above embodiment, see Figure 3 The depth b of the connecting groove 400 is greater than 3 micrometers and not greater than the thickness h of the auxiliary function layer 300 .
[0036] Specifically, when the etching depth of the connecting groove 400 is not greater than 3 microns, the bubbles in the first cutting street 100 cannot be discharged to the second cutting street 200 through the connecting groove 400 in a timely and effective manner, affecting the efficiency of the air in the first cutting street 100 being discharged to the second cutting street 200. The connecting groove 400 can be etched to the substrate at the deepest point, so that the depth b of the connecting groove 400 is not greater than the thickness h of the auxiliary functional layer 300. If the depth b of the connecting groove 400 is greater than the thickness h of the auxiliary functional layer 300, the integrity of the display panel to be cut cannot be guaranteed, and it is easy to break from the connecting groove 400.
[0037] Optionally, based on the above embodiment, see Figure 3 The width a of the connecting groove 400 is greater than zero and is not greater than the side length l of the display area adjacent to the first cutting street 100 connected to the connecting groove 400 .
[0038] Specifically, the wider the width a of the connecting groove 400, the higher the efficiency of exhausting the air in the first cutting street 100 to the second cutting street 200, and the fewer the connecting grooves 400 that can be arranged on the side of the display area AA. When the width a of the connecting groove 400 is greater than one-half l, only one connecting groove 400 can be arranged on the side of the display area AA.
[0039] Optionally, Figure 4 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model. Figure 4 The connecting groove 400 and the first cutting path 100 are arranged at a certain angle, which is greater than 0° and less than 180°.
[0040] Specifically, the connecting groove 400 can be tilted at a certain angle, so that a certain angle is formed between the connecting groove 400 and the first cutting street 100, so that bubbles in the first cutting street 100 can be discharged to the second cutting street 200 through the connecting groove 400. In this embodiment, the angle between the connecting groove 400 and the first cutting street 100 is not specifically limited. For example, Figure 4It is shown that the included angle α between the connecting groove 400 and the first cutting street 100 is 45°.
[0041] Optionally, Figure 5 A schematic diagram of a partial cross-sectional structure of another embodiment of the present invention along the Y direction of the display panel. Figure 5 The display panel includes a plurality of communication grooves 400 , and the cross-sectional shapes of the communication grooves 400 are partially different or all the same.
[0042] Specifically, the cross-sectional shapes of the plurality of connecting grooves 400 can all be set to the same shape, or each connecting groove 400 can be set to a different shape. This embodiment does not specifically limit the cross-sectional shapes of the plurality of connecting grooves 400. For example, Figure 5 It is shown that three communication grooves 400 are arranged on the non-display area on one side of the display area, two of which are rectangular and one of which is trapezoidal.
[0043] Optionally, Figure 6 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model. Figure 6 The plurality of connecting grooves 400 are symmetrically arranged around the display area AA.
[0044] Specifically, a plurality of connecting grooves 400 surround the central axis OO of the display area AA. 、 The bilaterally symmetrical arrangement allows the air in the first cutting path 100 to be uniformly discharged through the symmetrically arranged connecting grooves 400, shortening the exhaust path of the bubbles on both sides, avoiding exhaust congestion, and ensuring exhaust efficiency.
[0045] Optionally, Figure 7 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model. Figure 7 The plurality of connecting grooves 400 are arranged at equal intervals around the display area AA.
[0046] Specifically, a plurality of connecting grooves 400 are arranged at equal intervals around the display area AA, so that bubbles at different positions in the first cutting path 100 can be uniformly discharged through adjacent connecting grooves 400, so that the exhaust paths of bubbles at different positions are equal in size, thereby improving the exhaust efficiency of the bubbles.
[0047] Optionally, Figure 8 A schematic diagram of a top view structure of another display panel provided by an embodiment of the utility model. Figure 8 At least two connecting grooves 400 are disposed along the bending portion of the first cutting street 100 in the non-display area NAA.
[0048] Specifically, bubbles are easily generated in the bending portion of the non-display area NAA along the first cutting path 100, and bubbles are easily accumulated. A plurality of connecting grooves 400 are provided in the bending portion of the non-display area NAA along the first cutting path 100, so that the accumulated bubbles can be discharged through the plurality of connecting grooves 400, further improving the exhaust efficiency.
[0049] The embodiment of the present invention further provides a display device. The display device provided by the embodiment of the present invention includes the display panel provided by any of the above embodiments, and has the beneficial effects of the display panel provided by any of the above embodiments, which will not be described in detail here.
[0050] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.
[0051] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A display panel, characterized in that: It includes a display area and a non-display area; the display panel also includes: A first cutting path is located in the non-display area; A second cutting line is located in the non-display area and on a side of the first cutting line away from the display area; The auxiliary functional layer is located between the first cutting street and the second cutting street. The auxiliary functional layer is provided with at least one connecting groove, and the connecting groove connects the first cutting street and the second cutting street.
2. The display panel according to claim 1, characterized in that: The cross-sectional shape of the communication groove includes a polygon.
3. The display panel according to claim 2, characterized in that: The depth of the connecting groove is greater than 3 micrometers and not greater than the thickness of the auxiliary functional layer.
4. The display panel according to claim 3, characterized in that: The width of the communication groove is greater than zero and not greater than the length of the side of the display area adjacent to the first cutting road communicating with the communication groove.
5. The display panel according to claim 1, characterized in that: The connecting groove and the first cutting path are arranged at a certain angle, wherein the angle is greater than 0° and less than 180°.
6. The display panel according to claim 1, characterized in that: The display panel includes a plurality of the communicating grooves, and the cross-sectional shapes of the communicating grooves are partially different or all the same.
7. The display panel according to claim 6, characterized in that: The plurality of communication grooves are symmetrically arranged around the display area.
8. The display panel according to claim 6, characterized in that: The plurality of communication grooves are arranged at equal intervals around the display area.
9. The display panel according to claim 6, characterized in that: At least two of the communicating grooves are disposed in the non-display area along the bending portion of the first cutting path.
10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.