Display panel mother board, display panel and display apparatus

Abstract

The present application relates to the technical field of display. Disclosed are a display panel mother board, a display panel and a display apparatus. The display panel mother board comprises a mother board substrate, a plurality of display panels located in a plurality of panel regions, a test element group located in invalid regions, and second support structures located in the invalid regions. A second sub-display region of a display region of each display panel is provided with a first support structure. Thus, particles formed due to material shedding caused by relative displacement between a mask and the first support structures during an evaporation process are closer to the second sub-display regions. Since the portion of an encapsulation film layer located in the second sub-display regions is thicker, the particles can be prevented from piercing the encapsulation film layer, thereby ensuring the encapsulation effect of the encapsulation film layer and improving the yield and display effect of the display panels. In addition, by using the first support structures and the second support structures together to support a mask used in the evaporation process, the support effect on the mask can be ensured, thereby improving the fabrication yield of the display panel mother board.

Description

Display panel motherboard, display panel and display device

[0001] This disclosure claims priority to Chinese Patent Application No. 202510388319.4, filed on March 28, 2025, entitled “Display Panel Motherboard, Display Panel and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and in particular to a display panel motherboard, a display panel, and a display device. Background Technology

[0003] The display panel motherboard includes multiple display panels and a test component group located in the invalid area between adjacent display panels. The test component group is used to test the circuit connections and performance of the display panels. The invalid area is the area to be peeled off from the display panel motherboard after the manufacturing process of the display panel motherboard is completed to form multiple display panels. Summary of the Invention

[0004] This application provides a display panel motherboard, a display panel, and a display device, the technical solution of which is as follows:

[0005] On one hand, a display panel motherboard is provided, the display panel motherboard comprising:

[0006] A motherboard substrate, the motherboard substrate including multiple panel areas and invalid areas located between adjacent panel areas;

[0007] Multiple display panels are provided, with each display panel corresponding to a specific panel area. Each display panel is located within a corresponding panel area. Each display panel includes a display area and a peripheral area surrounding the display area. The display area includes a first sub-display area, a second sub-display area, and a third sub-display area arranged along a first direction. The peripheral area includes a bonding area located on the side of the third sub-display area away from the first sub-display area. The display panel includes multiple light-emitting units located in the display area, multiple first support structures located in the second sub-display area, and an encapsulation film layer located on the side of the multiple light-emitting units and the multiple first support structures away from the mother substrate. The thickness of the encapsulation film layer in the portion located in the first sub-display area and the thickness in the portion located in the third sub-display area are less than the thickness of the encapsulation film layer in the portion located in the second sub-display area.

[0008] A test element group is located in the invalid area and is connected to the display panel;

[0009] And a second support structure, the second support structure being located in the invalid region, and the second support structure being located in the test element group near the first sub-display area.

[0010] Optionally, the plurality of first support structures include: a plurality of support groups arranged along the first direction, the plurality of support groups including: a plurality of first support groups and a plurality of second support groups, the plurality of first support groups and the plurality of second support groups being arranged alternately in the first direction;

[0011] The first support group includes a plurality of first sub-support parts arranged along the second direction, and the second support group includes a plurality of second sub-support parts arranged along the second direction. The plurality of first sub-support parts in the first support group and the plurality of second sub-support parts in the second support group arranged adjacent to each other in the first direction are staggered in the second direction.

[0012] The second direction intersects with the first direction.

[0013] Optionally, the width of the first sub-display area along the first direction and the width of the third sub-display area along the first direction are both greater than or equal to the distance between two adjacent support groups along the first direction.

[0014] Optionally, the distance between two adjacent first support groups along the first direction is equal to the distance between two adjacent second support groups along the first direction;

[0015] The width of the third sub-display area along the first direction is greater than or equal to the distance between two adjacent first support groups along the first direction.

[0016] There is a second support group between two adjacent first support groups.

[0017] Optionally, the distance between two adjacent first support groups along the first direction is equal to the distance between two adjacent second support groups along the first direction;

[0018] The width of the third sub-display area along the first direction is greater than or equal to the distance between the first first support group and the second first support group along the first direction;

[0019] Among them, there is a first second support group, a third first support group and a second second support group arranged along the first direction between the first first support group and the second first support group.

[0020] Optionally, the distance between two adjacent first support groups along the first direction is equal to the distance between two adjacent second support groups along the first direction;

[0021] The width of the third sub-display area along the first direction is greater than or equal to the distance between the first first support group and the second first support group along the first direction;

[0022] Between the first first support group and the second first support group, there are a first second support group, a third first support group, a second second support group, a fourth first support group, and a third second support group arranged along the first direction.

[0023] Optionally, the width of the first sub-display area along the first direction is greater than or equal to the distance between the first first support group and the second first support group along the first direction.

[0024] Optionally, the width of the first sub-display area along the first direction is greater than or equal to the distance between two adjacent first support groups along the first direction;

[0025] There is a second support group between two adjacent first support groups.

[0026] Optionally, the test element group includes: a first test section and a second test section;

[0027] The distance between the first test section and the display panel is greater than the distance between the second test section and the display panel;

[0028] The second support structure includes a first part and a second part, the first part being located between the first test part and the display panel, and the second part being located between the second test part and the display panel; the width of the first part along the first direction is greater than the width of the second part along the first direction.

[0029] Optionally, the first portion includes at least one strip-shaped third sub-support portion arranged along the first direction and extending along the second direction.

[0030] Optionally, the first portion includes a plurality of the third sub-support portions arranged along the first direction and extending along the second direction.

[0031] Optionally, the first portion includes two third sub-support portions arranged along the first direction and extending along the second direction; or,

[0032] The first part includes four third sub-supports arranged along the first direction and extending along the second direction.

[0033] Optionally, the second part includes at least one strip-shaped fourth sub-support portion arranged along the first direction and extending along the second direction.

[0034] Optionally, the first part includes a first main body portion and a first protrusion portion located between the first main body portion and the first test portion;

[0035] The second part includes a second main body portion and a second protrusion portion located between the second main body portion and the second test portion;

[0036] The first main body and the second main body are an integral structure.

[0037] Optionally, at least a portion of the boundary of the first protrusion and at least a portion of the boundary of the second protrusion are arc-shaped.

[0038] On the other hand, a display panel is provided, which is obtained by cutting the display panel mother plate described above.

[0039] Optionally, the display panel includes:

[0040] A substrate, the substrate including a display area and a peripheral area surrounding the display area, the display area including a first sub-display area, a second sub-display area and a third sub-display area arranged along a first direction;

[0041] Multiple light-emitting units are located in the display area;

[0042] A plurality of first support structures are located in the second sub-display area, and the orthographic projection of the first support structure on the substrate is located within the orthographic projection of the interval between adjacent light-emitting units on the substrate.

[0043] And an encapsulation film layer, the encapsulation film layer being located on the side of the plurality of light-emitting units and the plurality of first support structures away from the substrate;

[0044] The thickness of the encapsulation film layer in the portion located in the first sub-display area and the thickness of the portion located in the third sub-display area are less than the thickness of the encapsulation film layer in the portion located in the second sub-display area.

[0045] In another aspect, a display device is provided, the display device comprising: a power supply component and a display panel as described above;

[0046] The power supply component is connected to the display panel, and the power supply component is used to supply power to the display panel. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 is a schematic diagram of the photomask curving upwards in the related technology;

[0049] Figure 2 is a schematic diagram of the formation of capacitors in the conductive layers of the mask and display panel in the related technology;

[0050] Figure 3 is a schematic diagram of encapsulation failure in related technologies;

[0051] Figure 4 is a schematic diagram of the structure of a display panel motherboard provided in an embodiment of this application;

[0052] Figure 5 is a partial schematic diagram of the display panel motherboard provided in an embodiment of this application;

[0053] Figure 6 is a schematic diagram of a display panel in a display panel motherboard provided in an embodiment of this application;

[0054] Figure 7 is a partial schematic diagram of region A in Figure 5;

[0055] Figure 8 is a schematic diagram of the invalid region in Figure 7;

[0056] Figure 9 is a partial top view of a display panel located in a second sub-display area and a first sub-display area according to an embodiment of this application;

[0057] Figure 10 is a partial top view of a display panel located in the second sub-display area and the third sub-display area according to an embodiment of this application;

[0058] Figure 11 is a partial cross-sectional view of a display panel located in the second sub-display area according to an embodiment of this application;

[0059] Figure 12 is another partial schematic diagram of region A in Figure 5;

[0060] Figure 13 is a partial top view of a display panel located in a second sub-display area according to an embodiment of this application;

[0061] Figure 14 is another partial schematic diagram of region A in Figure 5;

[0062] Figure 15 is another partial schematic diagram of region A in Figure 5;

[0063] Figure 16 is another partial schematic diagram of region A in Figure 5;

[0064] Figure 17 is another schematic diagram of the invalid region in Figure 7;

[0065] Figure 18 is another schematic diagram of the invalid region in Figure 7;

[0066] Figure 19 is another schematic diagram of the invalid region in Figure 7;

[0067] Figure 20 is a partial schematic diagram of a second support structure provided in an embodiment of this application;

[0068] Figure 21 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0069] Figure 22 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0070] Figure 23 is another schematic diagram of the invalid region in Figure 7;

[0071] Figure 24 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0072] Figure 25 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0073] Figure 26 is another schematic diagram of the invalid region in Figure 7;

[0074] Figure 27 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0075] Figure 28 is another schematic diagram of the invalid region in Figure 7;

[0076] Figure 29 is another schematic diagram of the invalid region in Figure 7;

[0077] Figure 30 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0078] Figure 31 is a partial schematic diagram of another second support structure provided in an embodiment of this application;

[0079] Figure 32 is a cross-sectional schematic diagram of a first support structure and a second support structure provided in an embodiment of this application;

[0080] Figure 33 is a cross-sectional schematic diagram of another first support structure and second support structure provided in an embodiment of this application;

[0081] Figure 34 is a cross-sectional schematic diagram of another first support structure and second support structure provided in the embodiments of this application;

[0082] Figure 35 is a cross-sectional schematic diagram of another first support structure and second support structure provided in the embodiments of this application;

[0083] Figure 36 is a cross-sectional schematic diagram of another first support structure and second support structure provided in the embodiments of this application;

[0084] Figure 37 is a cross-sectional schematic diagram of another first support structure and second support structure provided in the embodiments of this application;

[0085] Figure 38 is a schematic diagram of the thickness relationship of an IJP layer at different locations provided in an embodiment of this application;

[0086] Figure 39 is a schematic diagram of the structure of a display panel provided in an embodiment of this application;

[0087] Figure 40 is a schematic diagram of the structure of a display device provided in an embodiment of this application. Detailed Implementation

[0088] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0089] In related technologies, the display panel motherboard includes a support layer (PS). The support layer can be used to support the mask used in the vapor deposition process during the fabrication of the display panel motherboard, ensuring that the circuitry in the display panel is not damaged.

[0090] However, the photomask may move relative to the support layer, causing material formed on the support layer to fall off and form particles. The presence of particles may lead to display panel encapsulation failure and low display panel yield.

[0091] With the continuous advancement of technology and the rapid development of flexible display products, the market share of flexible display products is gradually increasing. Furthermore, the end-market's quality requirements for flexible display panels are becoming increasingly stringent. This necessitates continuous improvements in the design of flexible display panels to meet market demands, and manufacturers implement extremely rigorous reliability testing regulations to meet the quality requirements of end customers. Due to the complexity of display panel manufacturing processes and the rigor of reliability testing, higher requirements are placed on the packaging of display panels. The presence of particles with high vertical height (denoted as HZ PT) can easily lead to display panel packaging failure and GDS (Gray Spots that gradually grow over time), causing reliability risks. Therefore, strict control of PT is necessary.

[0092] H (height) - Z (vertical) PT refers to a PT with a very large vertical height, generated during the evaporation (EV) process. The display panel 102 includes a support layer (PS) 05, which supports the fine metal masks 04 (FMM 041 and F-mask 042) in the EV process, ensuring that the lines of the thin-film transistors (TFTs) in the display panel 102 are not damaged during subsequent processes.

[0093] Referring to Figure 1, during the vapor deposition process, luminescent (EL) material is deposited on top of PS 05. The half-cut boundary of F-mask 042 is prone to warping under magnetic force, causing slight local wrinkles on FMM 041 and relative movement with PS, which in turn scratches the EL material, causing it to fall onto PS 05. The EL material falling onto PS forms PT. In Figure 1, 01 and 02 are parts of the vapor deposition equipment, 03 represents the glass substrate (which can be the mother substrate 101), and 06 represents the luminescent area.

[0094] Referring to Figure 2, because the open mask 07 has a half-etched area in the display area 102a of the display panel 102, the tip of the open mask will form a capacitor with the conductive layer (such as the anode layer 08) in the display panel 102. After the evaporation is completed, when the open mask 07 separates from the display panel 102, the tip of the open mask 07 discharges, generating electrostatic discharge (ESD). The presence of ESD will damage the EL material to form a physical platen (PT), and the effect of ESD will cause the PT to stand upright, forming an upper-lower platen (HZ PT). Referring to Figure 3, the presence of the HZ PT will push up the encapsulation film layer 102309 after the encapsulation (EN) process, causing encapsulation failure and GDS, significantly increasing the reliability risk of the display panel 102, resulting in poor yield and poor display effect. In Figure 3, 10 represents the driving circuit layer and the light-emitting device layer in the display panel 102.

[0095] Fine metal masks (MM and F-masks) can be used to form the light-emitting layer of the light-emitting units in a display panel. Open masks can be used to form common film layers of the light-emitting units in a display panel, such as the hole injection layer, hole transport layer, electron transport layer, electron injection layer, and cathode layer of the light-emitting units.

[0096] Figure 4 is a structural schematic diagram of a display panel motherboard provided in an embodiment of this application. Figure 5 is a partial schematic diagram of the display panel motherboard provided in an embodiment of this application. Figure 6 is a schematic diagram of a display panel in a display panel motherboard provided in an embodiment of this application. Figure 7 is a partial schematic diagram of region A in Figure 5. Figure 8 is a schematic diagram of the invalid region in Figure 7. Referring to Figures 4 to 8, the display panel motherboard 100 includes: a motherboard substrate 101, a plurality of display panels 102, a test element group 103, and a second support structure 104.

[0097] The motherboard substrate 101 includes multiple panel areas (not shown) and invalid areas 101a located between adjacent panel areas. A test element group 103 is located in the invalid area 101a and is connected to the display panel 102 for testing the performance of the display panel 102. Multiple display panels 102 correspond one-to-one with multiple panel areas, with each display panel 102 located in a corresponding panel area. Referring to FIG6, the display panel 102 includes a display area 102a and a peripheral area 102b surrounding the display area 102a. The display area 102a includes a first sub-display area 102a1, a second sub-display area 102a2, and a third sub-display area 102a3 arranged along a first direction X. The peripheral area 102b includes a bonding area 102b1. The bonding area 102b1 is located on the side of the third sub-display area 102a3 away from the first sub-display area 102a1.

[0098] Typically, the side of the peripheral area 102b of the display panel 102 where the binding area 102b1 is located is the bottom of the display panel 102, and the other side of the peripheral area 102b of the display panel 102 opposite to the binding area 102b1 is the top of the display panel 102. In this case, the first sub-display area 102a1 can be a portion of the display area 102a near the top of the display panel 102, the third sub-display area 102a3 can be a portion of the display area 102a near the bottom of the display panel 102, and the second sub-display area 102a2 is a portion of the display area located between the top and bottom of the display panel 102.

[0099] Figure 9 is a partial top view of a display panel located in a second sub-display area and a first sub-display area according to an embodiment of this application. Figure 10 is a partial top view of a display panel located in a second sub-display area and a third sub-display area according to an embodiment of this application. Figure 11 is a partial cross-sectional view of a display panel located in a second sub-display area according to an embodiment of this application. Referring to Figures 9 to 11, the display panel 102 includes a plurality of light-emitting units 1021 located in the display area 102a, a plurality of first support structures 1022 located in the second sub-display area 102a2, and an encapsulation film layer 1023 located on the side of the plurality of light-emitting units 1021 and the plurality of first support structures 1022 away from the mother substrate 101.

[0100] The thickness of the encapsulation film layer 1023 in the portion located in the first sub-display area 102a1 and the portion located in the third sub-display area 102a3 is less than the thickness of the encapsulation film layer 1023 in the portion located in the second sub-display area 102a2.

[0101] In this embodiment, since the first support structure 1022 is located in the second sub-display area 102a2, and not in the first sub-display area 102a1 or the third sub-display area 102a3, the support structure is removed from the display panel 102 located in the first sub-display area 102a1 and the third sub-display area 102a3. Furthermore, even if the mask and the first support structure 1022 experience relative displacement during the vapor deposition process, causing material to fall and form a PT (partial pressure drop), the PT can be made closer to the center of the display area 102a (e.g., the second sub-display area 102a2). Because the encapsulation film layer 1023 is thicker in the second sub-display area 102a2, even if the PT is high, it can avoid puncturing the encapsulation film layer 1023. Therefore, the encapsulation effect of the encapsulation film layer 1023 can be guaranteed, avoiding GDS (Geodes Dysfunction) problems, ensuring the reliability of the display panel 102, and improving the yield and display effect of the display panel 102.

[0102] Since the first sub-display area 102a1 and the third sub-display area 102a3 in the display area 102a do not have a first support structure 1022, the support performance of the mask used in the vapor deposition process is poor, which easily leads to large deformation between two adjacent display panels 102, affecting the stress distribution. Therefore, referring to FIG8, the display panel motherboard may include a second support structure 104 located in the invalid area 101a. The second support structure 104 may be located in the test element group 103 near the first sub-display area 102a1. That is, by setting the second support structure 104 in the invalid area 101a, the weakened support effect after removing the first support structure 1022 of the first sub-display area 102a1 and the third sub-display area 102a3 is balanced, ensuring the fabrication of the display panel 102.

[0103] In summary, this application provides a display panel motherboard, which includes a motherboard substrate, multiple display panels located in multiple panel areas, a test element group located in an invalid area, and a second support structure located in the invalid area. The third sub-display area of ​​the display panel near the bonding area and the first sub-display area far from the bonding area do not have a first support structure, while the second sub-display area of ​​the display panel has a first support structure. Even if the relative displacement between the mask and the first support structure during the vapor deposition process causes material to fall and form a PT (partial pressure test), the PT can be made closer to the second sub-display area. Since the encapsulation film layer is thicker in the second sub-display area, even if the PT is high, it can avoid puncturing the encapsulation film layer, ensuring the encapsulation effect of the encapsulation film layer and improving the yield and display effect of the display panel. Furthermore, by sharing the support for the mask used in the vapor deposition process between the first and second support structures, the support effect for the mask can be ensured, improving the manufacturing yield of the display panel motherboard.

[0104] Referring to Figure 7, the plurality of first support structures 1022 include: a plurality of support groups 1022z arranged along the first direction X. The plurality of support groups 1022z include: a plurality of first support groups 1022z1 and a plurality of second support groups 1022z2. The plurality of first support groups 1022z1 and the plurality of second support groups 1022z2 are arranged alternately in the first direction X.

[0105] The first support group 1022z1 includes a plurality of first sub-support portions 1022z11 arranged along the second direction Y. The second support group 1022z2 includes a plurality of second sub-support portions z21 arranged along the second direction Y. The plurality of first sub-support portions 1022z11 in the first support group 1022z1 and the plurality of second sub-support portions z21 in the second support group 1022z2, which are adjacent to each other in the first direction X, are staggered in the second direction Y. The second direction Y intersects the first direction X. Optionally, the second direction Y is perpendicular to the first direction X. For example, the first direction X can be the pixel column direction of the display panel 102, and the second direction Y can be the pixel row direction of the display panel 102.

[0106] Optionally, the orthographic projection of the first sub-support portion 1022z11 in the first support group 1022z1 onto the reference plane is located between the orthographic projections of two adjacent second sub-support portions z21 in the second support group 1022z2 onto the reference plane. The reference plane can be a surface perpendicular to the mother substrate 101 and parallel to the second direction Y.

[0107] For example, the orthographic projection of the first sub-support 1022z11 in the first support group 1022z1 onto the reference plane is located at the middle between the orthographic projections of two adjacent second sub-supports z21 in the second support group 1022z2 onto the reference plane.

[0108] In this embodiment, the width of the first sub-display area 102a1 along the first direction X and the width of the third sub-display area 102a3 along the first direction X are both greater than or equal to the distance between two adjacent support groups 1022z along the first direction X. The distance between two adjacent support groups 1022z along the first direction X can be used to represent the installation space required by one support group 1022z. Since multiple first support groups 1022z1 and multiple second support groups 1022z2 are arranged alternately along the first direction X, in two adjacent support groups 1022z, one support group 1022z is the first support group 1022z1, and the other support group 1022z is the second support group 1022z2.

[0109] That is, the width of the first sub-display area 102a1 along the first direction X and the width of the third sub-display area 102a3 along the first direction X are both greater than or equal to the distance between two adjacent support groups 1022z along the first direction X. This can be used to indicate that the width of the first sub-display area 102a1 along the first direction X and the width of the third sub-display area 102a3 along the first direction X can be used to set at least one support group 1022z. Alternatively, it can be understood that the areas of display area 102a near the binding area 102b1 and the areas far from the binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least one support group 1022z originally provided in the areas of display area 102a near the binding area 102b1 and the areas far from the binding area 102b1, so as to obtain the first sub-display area 102a1 and the third sub-display area 102a3 without support groups 1022z.

[0110] In this embodiment, it is assumed that the distance between two adjacent first support groups 1022z1 along the first direction X is equal to the distance between two adjacent second support groups 1022z2 along the first direction X. Referring to FIG7, the width of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance between two adjacent first support groups 1022z1 along the first direction X. The width of the third sub-display area 102a3 along the first direction X is greater than or equal to the distance between two adjacent first support groups 1022z1 along the first direction X. Since multiple first support groups 1022z1 and multiple second support groups 1022z2 are arranged alternately in the first direction X, there is one second support group 1022z2 between two adjacent first support groups 1022z1. The distance d1 between two adjacent first support groups 1022z1 along the first direction X can be used to represent the installation space required by the two support groups 1022z.

[0111] That is, the width of the first sub-display area 102a1 along the first direction X and the width of the third sub-display area 102a3 along the first direction X are both greater than or equal to the distance d1 between two adjacent first support groups 1022z1 along the first direction X. This can be used to indicate that the width of the first sub-display area 102a1 along the first direction X and the width of the third sub-display area 102a3 along the first direction X can be used to set at least two support groups 1022z. Alternatively, it can be understood that the areas of display area 102a near the binding area 102b1 and the areas far from the binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove the at least two support groups 1022z originally provided in the areas of display area 102a near the binding area 102b1 and the areas far from the binding area 102b1, so as to obtain the first sub-display area 102a1 and the third sub-display area 102a3 without support groups 1022z.

[0112] Assuming the distance between two adjacent first support groups 1022z1 along the first direction X is not equal to the distance between two adjacent second support groups 1022z2 along the first direction X, then the width of the first sub-display area 102a1 along the first direction X can be greater than or equal to the target size. The target size can be half the sum of the distance between two adjacent first support groups 1022z1 along the first direction X and the distance between two adjacent first support groups 1022z1 along the first direction X. In this case, the target size can roughly represent the installation space required by the two support groups 1022z.

[0113] In this embodiment, it is assumed that the distance between two adjacent first support groups 1022z1 along the first direction X is equal to the distance between two adjacent second support groups 1022z2 along the first direction X. Referring to Figures 12 and 13, the width of the third sub-display area 102a3 along the first direction X is greater than or equal to the distance d2 between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X. The width of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance d1 between two adjacent first support groups 1022z1 along the first direction X.

[0114] Specifically, a first second support group 1022z2, a third first support group 1022z1, and a second second support group 1022z2 are arranged along the first direction X between the first and second first support groups 1022z1. That is, three support groups 1022z are provided between the first and second first support groups 1022z1. In this case, the distance between the first and second first support groups 1022z1 along the first direction X can be used to represent the installation space required for the four support groups 1022z. Furthermore, since the multiple first support groups 1022z1 and multiple second support groups 1022z2 are arranged alternately in the first direction X, there is one second support group 1022z2 between any two adjacent first support groups 1022z1. The distance between two adjacent first support groups 1022z1 along the first direction X can be used to represent the installation space required by the two support groups 1022z. In this embodiment, the first first support group 1022z1, the second first support group 1022z1, and the third first support group 1022z1 are all first support groups 1022z1, and the distinction between the first, second, and third is used to represent different first support groups 1022z1. Similarly, the first second support group 1022z2 and the second second support group 1022z2 are both second support groups 1022z2, and the distinction between the first and second is used to represent different second support groups 1022z2.

[0115] That is, the width d2 of the third sub-display area 102a3 along the first direction X is greater than or equal to the distance between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X. This can be used to indicate that the width of the third sub-display area 102a3 along the first direction X can be used to set at least four support groups 1022z. Alternatively, it can be understood that the areas of display area 102a near the binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least four support groups 1022z originally provided in the areas of display area 102a near the binding area 102b1 to obtain a third sub-display area 102a3 without support groups 1022z.

[0116] The width d1 of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance between two adjacent first support groups 1022z1 along the first direction X. This can be used to indicate that the width of the first sub-display area 102a1 along the first direction X can be used to set at least two support groups 1022z. Alternatively, it can be understood that the areas of display area 102a far from the binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least two support groups 1022z in the areas of display area 102a close to the binding area 102b1 to obtain a first sub-display area 102a1 without support groups 1022z.

[0117] Referring to Figure 14, the width of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance d2 between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X. In this case, the width of the first sub-display area 102a1 along the first direction X being greater than or equal to the distance d2 between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X can be used to indicate that the width of the first sub-display area 102a1 along the first direction X can be used to set at least four support groups 1022z. Alternatively, it can be understood that the areas of display area 102a away from binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least four support groups 1022z originally provided in the areas of display area 102a away from binding area 102b1 to obtain a first sub-display area 102a1 without support groups 1022z.

[0118] In this embodiment, it is assumed that the distance between two adjacent first support groups 1022z1 along the first direction X is equal to the distance between two adjacent second support groups 1022z2 along the first direction X. Referring to Figures 15 and 13, the width of the third sub-display area 102a3 along the first direction X is greater than or equal to the distance d3 between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X. The width of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance d1 between two adjacent first support groups 1022z1 along the first direction X.

[0119] Specifically, between the first first support group 1022z1 and the second first support group 1022z1, there are a first second support group 1022z2, a third first support group 1022z1, a second second support group 1022z2, a fourth first support group 1022z1, and a third second support group 1022z2 arranged along the first direction X. That is, five support groups 1022z are provided between the first and second first support groups 1022z1. In this case, the distance between the first and second first support groups 1022z1 along the first direction X can be used to represent the installation space required for six support groups 1022z. Furthermore, since the multiple first support groups 1022z1 and multiple second support groups 1022z2 are arranged alternately in the first direction X, there is one second support group 1022z2 between two adjacent first support groups 1022z1. The distance between two adjacent first support groups 1022z1 along the first direction X can be used to represent the installation space required by the two support groups 1022z. In this embodiment, the first first support group 1022z1, the second first support group 1022z1, the third first support group 1022z1, and the fourth first support group 1022z1 are all first support groups 1022z1, and the distinction between the first, second, third, and fourth is used to represent different first support groups 1022z1. Similarly, the first second support group 1022z2, the second second support group 1022z2, and the third second support group 1022z2 are all second support groups 1022z2, and the distinction between the first, second, and third is used to represent different second support groups 1022z2.

[0120] That is, the width of the third sub-display area 102a3 along the first direction X is greater than or equal to the distance between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X. This can be used to indicate that the width of the third sub-display area 102a3 along the first direction X can be used to set at least six support groups 1022z. Alternatively, it can be understood that the areas of display area 102a near the binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least six support groups originally provided in the areas of display area 102a near the binding area 102b1 to obtain a third sub-display area 102a3 without support groups 1022z.

[0121] The width of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance d1 between two adjacent first support groups 1022z1 along the first direction X. This can be used to indicate that the width of the first sub-display area 102a1 along the first direction X can be used to set at least two support groups 1022z. Alternatively, it can be understood that the areas of display area 102a far from the binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least two support groups 1022z in the areas of display area 102a close to the binding area 102b1 to obtain a first sub-display area 102a1 without support groups 1022z.

[0122] Referring to Figure 16, the width of the first sub-display area 102a1 along the first direction X is greater than or equal to the distance d3 between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X. In this case, the width of the first sub-display area 102a1 along the first direction X being greater than or equal to the distance d3 between the first first support group 1022z1 and the second first support group 1022z1 along the first direction X can be used to indicate that the width of the first sub-display area 102a1 along the first direction X can be used to set at least six support groups 1022z. Alternatively, it can be understood that the areas of display area 102a away from binding area 102b1 were originally provided with support groups 1022z. The solution of this application embodiment is to remove at least six support groups 1022z originally provided in the areas of display area 102a away from binding area 102b1 to obtain a first sub-display area 102a1 without support groups 1022z.

[0123] The above embodiments are described in detail using the example of removing one set of support groups 1022z, two sets of support groups 1022z, four sets of support groups 1022z, and six sets of support groups 1022z in the area of ​​display area 102a that is far away from the binding area 102b1 to obtain the first sub-display area 102a1, and removing one set of support groups 1022z, two sets of support groups 1022z, four sets of support groups 1022z, and six sets of support groups 1022z in the area of ​​display area 102a that is close to the binding area 102b1 to obtain the third sub-display area 102a3. Of course, in practice, the embodiments of this application do not specifically limit the number of support groups 1022z removed from the area of ​​display area 102a that is far from the binding area 102b1, nor the number of support groups 1022z removed from the area of ​​display area 102a that is close to the binding area 102b1. For example, three, five, seven, or even more support groups 1022z can be removed from the area of ​​display area 102a that is far from the binding area 102b1 to obtain the first sub-display area 102a1. Similarly, three, five, seven, or even more support groups 1022z can be removed from the area of ​​display area 102a that is close to the binding area 102b1 to obtain the third sub-display area 102a3.

[0124] Referring to Figure 8, the test element group 103 may include: a first test section 1031 and a second test section 1032. The first test section 1031 may refer to a test circuit (denoted as BP TEG) that tests the performance of the driving circuit in the display panel 102, and the second test section 1032 may refer to a test circuit (denoted as TSPTEG) that tests the performance of the touch circuit in the display panel 102.

[0125] Referring to Figure 8, the distance d4 between the first test section 1031 and the module cutting track of the display panel 102 is greater than the distance d5 between the second test section 1032 and the module cutting track of the display panel 102. That is, the width of the invalid region 101a between the first test section 1031 and the display panel 102 is larger, while the width of the invalid region 101a between the second test section 1032 and the display panel 102 is smaller.

[0126] In order to avoid the second support structure 104 located in the invalid region 101a from affecting the performance of the test element group 103, the second support structure 104 can be located in the invalid region 101a between the first test part 1031 and the display panel 102, and in the invalid region 101a between the second test part 1032 and the display panel 102.

[0127] Referring to Figure 8, the second support structure 104 includes a first portion 1041 and a second portion 1042. The first portion 1041 is located between the first test portion 1031 and the display panel 102, and the second portion 1042 is located between the second test portion 1032 and the display panel 102. Since the width of the invalid region 101a between the first test portion 1031 and the display panel 102 is different from the width of the invalid region 101a between the second test portion 1032 and the display panel 102, different widths of the first portion 1041 and the second portion 1042 can be used to adapt to invalid regions 101a of different widths. Optionally, the width of the first portion 1041 along the first direction X is greater than the width of the second portion 1042 along the first direction X.

[0128] In this embodiment, the first portion 1041 may include at least one strip-shaped third sub-support portion 10411 arranged along the first direction X and extending along the second direction Y. Optionally, referring to Figures 17 to 19, the first portion 1041 may include a strip-shaped third sub-support portion 10411, and no second support portion is provided. That is, the width of the second portion 1042 may be 0.

[0129] In Figure 17, the width of the first portion 1041 along the first direction X can be 200 μm. In Figure 18, the width of the first portion 1041 along the first direction X can be 400 μm. In Figure 19, the width of the first portion 1041 along the first direction X can be 600 μm.

[0130] For the first portion 1041 shown in Figures 17 to 19, the width of the first portion 1041 along the first direction X does not need to be specifically limited, as long as the distance between the first portion 1041 and the module cutting channel of the display panel 102, and the distance between the first portion 1041 and the first test portion 1031 meet certain conditions. For example, the width of the first portion 1041 along the first direction X can be arbitrarily chosen as long as the distance between the first portion 1041 and the module cutting channel of the display panel 102 is greater than 100μm, and the distance between the first portion 1041 and the first test portion 1031 is greater than 10μm.

[0131] When the distance between the first part 1041 and the module cutting channel of the display panel 102 is greater than 100μm, and the distance between the first part 1041 and the first test part 1031 is greater than 10μm, it can be guaranteed that the first part 1041 will not affect the first test part 1031 and the display panel 102.

[0132] For example, assume that the distance h1 between the first test portion 1031 and the display panel 102 near its boundary is 840 μm, and the distance h2 between the second test portion 1032 and the display panel 102 near its boundary is 470 μm. In Figure 20, the width of the first portion 1041 along the first direction X is 200 μm, and the distance between the first portion 1041 and the module cutting channel of the first test portion 1031 near the display panel 102 can be 320 μm. In Figure 21, the width of the first portion 1041 along the first direction X is 400 μm, and the distance between the first portion 1041 and the first test portion 1031 near the display panel 102 near its boundary can be 220 μm. In Figure 22, the width of the first part 1041 along the first direction X is 600 μm, the distance between the first part 1041 and the first test part 1031 near the boundary of the display panel 102 can be 120 μm, and the distance between the first part 1041 and the display panel 102 is 120 μm.

[0133] In this embodiment, the first portion 1041 may include a plurality of strip-shaped third sub-support portions 10411 arranged along a first direction X and extending along a second direction Y. The second portion 1042 includes at least one strip-shaped fourth sub-support portion 10421 arranged along the first direction X and extending along the second direction Y. Optionally, referring to Figures 8 and 23, each first portion 1041 includes two strip-shaped third sub-support portions 10411, and the second portion 1042 includes one strip-shaped fourth sub-support portion 10421. When the first portion 1041 includes a plurality of third sub-support portions 10411, the width of the first portion 1041 along the first direction X may refer to the sum of the widths of the plurality of third sub-support portions 10411 along the first direction X.

[0134] For example, assume that the distance h1 between the first test portion 1031 and the display panel 102 near its boundary is 991 μm, and the distance h2 between the second test portion 1032 and the display panel 102 near its boundary is 471 μm. In Figure 24, the width of the two third sub-support portions 10411 in the first portion 1041 along the first direction X is 263 μm, the distance between the two third sub-support portions 10411 in the first portion 1041 is 107 μm, the distance between one third sub-support portion 10411 near the first test portion 1031 and the first test portion 1031 is 100 μm, and the distance between the other third sub-support portion 10411 far from the first test portion 1031 and the display panel 102 is 258 μm. In the second part 1042, the width of the fourth sub-support 10421 along the first direction X is 51μm, the distance between the fourth sub-support 10421 and the second test part 1032 is 410μm, and the distance between the fourth sub-support 10421 and the display panel 102 is 10μm.

[0135] For example, assume that the distance h1 between the first test portion 1031 and the display panel 102 near its boundary is 840 μm, and the distance h2 between the second test portion 1032 and the display panel 102 near its boundary is 470 μm. In Figure 25, the width of the two third sub-support portions 10411 in the first portion 1041 along the first direction X is 200 μm, the distance between the two third sub-support portions 10411 in the first portion 1041 is 240 μm, the distance between one third sub-support portion 10411 near the first test portion 1031 and the first test portion 1031 is 150 μm, and the distance between the other third sub-support portion 10411 away from the first test portion 1031 and the display panel 102 is 50 μm. In the second part 1042, the width of the fourth sub-support portion 10421 along the first direction X is 200 μm. The distance between the fourth sub-support portion 10421 and the second test portion 1032 in the second part 1042 is 220 μm, and the distance between the fourth sub-support portion 10421 and the display panel 102 in the second part 1042 is 50 μm. In Figure 25, a third sub-support portion 10411 near the display panel 102 in the first part 1041 and the fourth sub-support portion 10421 in the second part 1042 can be an integral structure.

[0136] Optionally, referring to Figure 26, the first part 1041 includes four strip-shaped third sub-support parts 10411, and the second part 1042 includes one strip-shaped fourth sub-support part 10421.

[0137] For example, assume that the distance h1 between the first test portion 1031 and the display panel 102 near its boundary is 991 μm, and the distance h2 between the second test portion 1032 and the display panel 102 near its boundary is 471 μm. In Figure 27, the width of the two third sub-support portions 10411 near the first test portion 1031 in the first portion 1041 along the first direction X is 135 μm, and the width of the two third sub-support portions 10411 away from the first test portion 1031 along the first direction X is 106.5 μm. The distance between any two adjacent third sub-support portions 10411 in the four third sub-support portions 10411 is 50 μm. The distance between the third sub-support portion 10411 closer to the first test portion 1031 in the first part 1041 and the first test portion 1031 is 100 μm. The distance between the other third sub-support portion 10411 farther from the first test portion 1031 and the display panel 102 is 258 μm. The width of the fourth sub-support portion 10421 in the second part 1042 along the first direction X is 41 μm. The distance between the fourth sub-support portion 10421 and the second test portion 1032 in the second part 1042 is 486 μm. The distance between the fourth sub-support portion 10421 and the display panel 102 in the second part 1042 is 15 μm.

[0138] In this embodiment of the application, referring to Figures 28 and 29, the first portion 1041 includes a first main body portion 10412 and a first protrusion portion 10413 located between the first main body portion 10412 and the first test portion 1031. The second portion 1042 includes a second main body portion 10422 and a second protrusion portion 10423 located between the second main body portion 10422 and the second test portion 1032. The first main body portion 10412 and the second main body portion 10422 are integrally formed.

[0139] Optionally, the width of the first part 1041 along the first direction X is greater than the width of the second part 1042 along the first direction X. This can mean that the sum of the widths of the first main body part 10412 and the first protruding part 10413 along the first direction X is greater than the sum of the widths of the second main body part 10422 and the second protruding part 10423 along the first direction X.

[0140] Optionally, assume that the distance between the first test portion 1031 and the display panel 102 near its boundary is 840 μm, and the distance between the second test portion 1032 and the display panel 102 near its boundary is 470 μm. In Figure 30, the width of the first main body portion 10412 along the first direction X in the first portion 1041 is 540 μm, the width of the first protrusion portion 10413 along the first direction X in the first portion 1041 is 100 μm, the distance between the first protrusion portion 10413 and the first test portion 1031 is 150 μm, and the distance between the first main body portion 10412 and the display panel 102 is 50 μm. In the second part 1042, the width of the second main body part 10422 along the first direction X is 90μm, the width of the second protrusion part 10423 along the first direction X is 60μm, the distance between the second protrusion part 10423 and the second test part 1032 is 210μm, and the distance between the second main body part 10422 and the display panel 102 is 50μm.

[0141] In Figure 31, in the first part 1041, the width of the first main body portion 10412 along the first direction X is 530 μm, the width of the first protrusion portion 10413 along the first direction X is 110 μm, the distance between the first protrusion portion 10413 and the first test portion 1031 is 150 μm, and the distance between the first main body portion 10412 and the display panel 102 is 50 μm. In the second part 1042, the width of the second main body portion 10422 along the first direction X is 90 μm, the width of the second protrusion portion 10423 along the first direction X is 60 μm, the distance between the second protrusion portion 10423 and the second test portion 1032 is 210 μm, and the distance between the second main body portion 10422 and the display panel 102 is 50 μm.

[0142] Optionally, referring to Figures 28 to 31, the first part 1041 may include two first protrusions 10413, and the second part 1042 may include a second protrusion 10423.

[0143] Optionally, at least a portion of the boundary of the first protrusion 10413 and at least a portion of the boundary of the second protrusion 10423 are arc-shaped. For example, in Figures 28 and 30, the boundary of the first protrusion 10413 near the first test portion 1031 and the boundary of the second protrusion 10423 near the second test portion 1032 are semi-circular. The first portion 1041 and the second portion 1042 shown in Figures 28 and 30 can constitute a second support structure 104 that is approximately dog-shaped.

[0144] Alternatively, the boundaries of the first protrusion 10413 and the second protrusion 10423 can be straight lines. For example, the first part 1041 and the second part 1042 shown in Figures 29 and 31 can form a second support structure 104 that is roughly in the shape of a cat.

[0145] The second support structure 104 shown in Figures 28 to 31 can be an irregular design. This design is mainly to leave as large a blank area as possible without affecting the stress, so as to reduce the impact of PT on the test element group 103.

[0146] In this embodiment, since the first sub-display area 102a1 and the third sub-display area 102a3 do not have a first support structure 1022, a second support structure 104 can be provided in the invalid area 101a to ensure the support effect on the mask used in the vapor deposition process. This embodiment does not specifically limit the shape, size, or arrangement of the second support structure 104, as long as it does not affect the testing effect of the test element group 103 in the invalid area 101a.

[0147] Referring to Figures 8, 17 to 19, 23, 26, 28, and 29, different portions of the test element group 103 are spaced apart in the second direction Y. Therefore, the second support structure 104 may further include block-shaped portions 1043 disposed at the spaced locations. This application embodiment does not limit this aspect.

[0148] In this application embodiment, the effectiveness of the application embodiment is verified by comparing the simulation results of the prior art solution and the following six embodiments.

[0149] Assume that the existing technical solution 1 does not remove the support group 1022z in the display area 102a that is close to and far from the binding area 102b1.

[0150] Existing technical solution 2: The support group 1022z in the area of ​​the display area 102a close to the binding area 102b1 is not removed, and two support groups 1022z in the area of ​​the display area 102a far from the binding area 102b1 are removed.

[0151] Example 1: Referring to Figures 7 and 32, removing the two sets of support groups 1022z in the area of ​​display area 102a that are close to the binding area 102b1 yields a third sub-display area 102a3 without support groups 1022z. Removing the two sets of support groups 1022z in the area of ​​display area 102a that are far from the binding area 102b1 yields a first sub-display area 102a1 without support groups 1022z. Furthermore, a second support structure 104 as shown in Figure 8 is provided in the invalid area 101a. That is, the first part 1041 of the second support structure 104 includes two third sub-support parts 10411, and the second part 1042 includes one fourth sub-support part 10421.

[0152] Example 2: Referring to Figures 15 and 33, six sets of support groups 1022z in the area of ​​display area 102a close to the binding area 102b1 are removed to obtain a third sub-display area 102a3 without support groups 1022z. Two sets of support groups 1022z in the area of ​​display area 102a far from the binding area 102b1 are removed to obtain a first sub-display area 102a1 without support groups 1022z. Furthermore, a second support structure 104 as shown in Figure 8 is provided in the invalid area 101a. That is, the first part 1041 of the second support structure 104 includes two third sub-support parts 10411, and the second part 1042 includes one fourth sub-support part 10421.

[0153] Example 3: Referring to Figures 7 and 34, removing the two sets of support groups 1022z in the area of ​​display area 102a that are close to the binding area 102b1 yields a third sub-display area 102a3 without support groups 1022z. Removing the two sets of support groups 1022z in the area of ​​display area 102a that are far from the binding area 102b1 yields a first sub-display area 102a1 without support groups 1022z. Furthermore, a second support structure 104 as shown in Figure 26 is provided in the invalid area 101a. That is, the first part 1041 of the second support structure 104 includes four third sub-support parts 10411, and the second part 1042 includes one fourth sub-support part 10421.

[0154] Example 4: Referring to Figures 15 and 35, six sets of support groups 1022z in the area of ​​display area 102a close to the binding area 102b1 are removed to obtain a third sub-display area 102a3 without support groups 1022z. Two sets of support groups 1022z in the area of ​​display area 102a far from the binding area 102b1 are removed to obtain a first sub-display area 102a1 without support groups 1022z. Furthermore, a second support structure 104 as shown in Figure 26 is provided in the invalid area 101a. That is, the first part 1041 of the second support structure 104 includes four third sub-support parts 10411, and the second part 1042 includes one fourth sub-support part 10421.

[0155] Example 5: Referring to Figures 12 and 36, four sets of support groups 1022z in the area of ​​display area 102a close to the binding area 102b1 are removed to obtain a third sub-display area 102a3 without support groups 1022z. Two sets of support groups 1022z in the area of ​​display area 102a far from the binding area 102b1 are removed to obtain a first sub-display area 102a1 without support groups 1022z. Furthermore, a second support structure 104 as shown in Figure 8 is provided in the invalid area 101a. That is, the first part 1041 of the second support structure 104 includes two third sub-support parts 10411, and the second part 1042 includes one fourth sub-support part 10421.

[0156] Example 6: Referring to Figures 12 and 37, four sets of support groups 1022z in the area of ​​display area 102a close to the binding area 102b1 are removed to obtain a third sub-display area 102a3 without support groups 1022z. Two sets of support groups 1022z in the area of ​​display area 102a far from the binding area 102b1 are removed to obtain a first sub-display area 102a1 without support groups 1022z. Furthermore, a second support structure 104 as shown in Figure 26 is provided in the invalid area 101a. That is, the first part 1041 of the second support structure 104 includes four third sub-support parts 10411, and the second part 1042 includes one fourth sub-support part 10421.

[0157] In Figures 32 to 37, patterns with dashed borders represent removed support groups, while patterns with solid borders represent unremoved support groups. Furthermore, since the first support group 1022z1 and the second support group 1022z2 are offset in the Y direction, theoretically, they cannot be simultaneously represented on the same cross-section. However, for ease of illustration, the first support group 1022z1 and the second support group 1022z2 are shown in the same cross-sectional view. In reality, Figures 32 to 37 are not schematic diagrams of a fixed cross-section.

[0158] Simulation results for prior art 1 include: the location of maximum stress is the support structure at the edge of the region in display area 102a far from the binding region 102b1, with a maximum stress of approximately 11028 MPa (megapascals). The maximum deformation of the mask is approximately 20.882 μm (micrometers).

[0159] Simulation results for prior art 2 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display region 102a, with a maximum stress of approximately 52.13 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display region 102a experiences a stress of 42.87 MPa. The maximum deformation of the photomask is approximately 0.13 μm.

[0160] Simulation results for Example 1 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display area 102a, with a maximum stress of approximately 44.04 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display area 102a experiences a stress of 0.136 MPa. The maximum deformation of the photomask is approximately 0.11 μm.

[0161] Simulation results for Example 2 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display area 102a, with a maximum stress of approximately 46.33 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display area 102a experiences a stress of 0.136 MPa. The maximum deformation of the mask is approximately 0.11 μm.

[0162] Simulation results for Example 3 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display area 102a, with a maximum stress of approximately 44.02 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display area 102a experiences a stress of 0.136 MPa. The maximum deformation of the mask is approximately 0.11 μm.

[0163] Simulation results for Example 4 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display area 102a, with a maximum stress of approximately 46.34 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display area 102a experiences a stress of 0.136 MPa. The maximum deformation of the mask is approximately 0.11 μm.

[0164] Simulation results for Example 5 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display area 102a, with a maximum stress of approximately 45.37 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display area 102a experiences a stress of 0.137 MPa. The maximum deformation of the mask is approximately 0.11 μm.

[0165] Simulation results for Example 6 include: the location of maximum stress is the support structure near the edge of the bonding region 102b1 in display area 102a, with a maximum stress of approximately 45.40 MPa. Additionally, the support structure at the edge of the region away from the bonding region 102b1 in display area 102a experiences a stress of 0.137 MPa. The maximum deformation of the mask is approximately 0.11 μm.

[0166] Compared with existing technical solutions 1 and 2, embodiments 1 to 6 remove the support group 1022z in the display area 102a near the binding area 102b1, and provide a second support structure 104 in the invalid area 101a. This reduces the maximum stress value by 11.11% to 15.50%, and the location of the maximum stress is always at the edge of the support structure in the display area 102a near the binding area 102b1. Simultaneously, the stress borne by the support structure in the display area 102a away from the binding area 102b1 is reduced by more than 90%, effectively preventing the reliability risk of HZ PT and subsequent GDS in the display area 102a.

[0167] According to the formula for calculating capacitance d represents the distance between the two capacitor plates in the capacitor. The smaller d is, the larger the capacitance value. Compared with the existing technology, the deformation of the mask is reduced by about 15%, which can reduce the size of the capacitance formed between the mask and the conductive layer in the display panel 102, reduce the risk of ESD, and at the same time reduce the occurrence rate of HZ PT, which in turn will lead to a sharp decrease in the occurrence rate of GDS.

[0168] In this embodiment of the application, referring to FIG11, the encapsulation film layer 1023 includes a first film layer 10231, a second film layer 10232 and a third film layer 10233 stacked along a direction away from the mother substrate 101.

[0169] Optionally, the first film layer 10231 and the third film layer 10233 can be made of inorganic materials, and the second film layer 10232 can be made of organic materials. For example, the first film layer 10231 and the third film layer 10233 can be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide), and SiOxNy (silicon oxynitride). The second film layer 10232 can be made of resin materials. The resin can be a thermoplastic resin or a thermosetting resin. Thermoplastic resins can include acrylic (PMMA) resin, and thermosetting resins can include epoxy resin.

[0170] In this embodiment, the second film layer 10232 can be fabricated using inkjet printing (IJP). The first film layer 10231 and the third film layer 10233 can be fabricated using chemical vapor deposition (CVD). The second film layer 10232 can be referred to as the IJP layer, the first film layer 10231 can be referred to as the CVD1 layer, and the third film layer 10233 can be referred to as the CVD2 layer.

[0171] In this embodiment of the application, referring to Figures 7, 12, and 14 to 16, it can be seen that the display panel 102 may further include a blocking structure 1024 located in the peripheral region 102b and surrounding the display region 102a. The blocking structure 1024 is used to block the overflow of organic materials in the display panel 102.

[0172] The second film layer 10232 in the encapsulation film layer 1023 can be located within the area enclosed by the barrier structure 1024, and the first film layer 10231 and the third film layer 10233 can cover the area enclosed by the barrier structure 1024 and also cover the barrier structure 1024. That is, the orthographic projection of the barrier structure 1024 on the mother substrate 101 is located within the area covered by the encapsulation film layer 1023, thereby ensuring the effective encapsulation of each structure within the area enclosed by the barrier structure 1024 by the encapsulation film layer 1023.

[0173] Optionally, the barrier structure 1024 may include at least one barrier dam Dam. For example, the barrier structure 1024 may include a first barrier dam Dam1, a second barrier dam Dam2, and a third barrier dam Dam3 arranged sequentially in a direction away from the display area 102a. The second film layer 10232 in the encapsulation film layer 1023 may be located within the area enclosed by the first barrier dam Dam1.

[0174] Optionally, the first barrier dam Dam1, the second barrier dam Dam2, and the third barrier dam Dam3 can all be composed of film layers in the display panel 102. The heights of the first barrier dam Dam1, the second barrier dam Dam2, and the third barrier dam Dam3 can increase sequentially. Of course, the heights of the first barrier dam Dam1, the second barrier dam Dam2, and the third barrier dam Dam3 can also be the same, and this embodiment of the application does not limit this.

[0175] For the IJP layers of the first sub-display area 102a1 and the third sub-display area 102a3 of display area 102a, the thickness of the IJP layer increases with the increase of the distance between it and the boundary of display area 102a. For example, in Figure 38, the horizontal axis indicates five different positions, and the vertical axis indicates the thickness of the IJP layer corresponding to the five different positions. The distance between position 1 and the boundary of display area 102a is the smallest, the distance between positions 1 to 5 and the boundary of display area 102a gradually increases, and the distance between position 5 and the boundary of display area 102a is the largest. Correspondingly, the thickness of the IJP layer corresponding to position 1 is the thinnest, the thickness of the IJP layer corresponding to positions 1 to 5 gradually increases, and the thickness of the IJP layer corresponding to position 5 is the largest.

[0176] For example, the thickness of the IJP layer corresponding to position 2 is 25.5% thicker than the thickness of the IJP layer corresponding to position 1. The thickness of the IJP layer corresponding to position 3 is 16.6% thicker than the thickness of the IJP layer corresponding to position 2. The thickness of the IJP layer corresponding to position 4 is 11.4% thicker than the thickness of the IJP layer corresponding to position 3. The thickness of the IJP layer corresponding to position 5 is 8.85% thicker than the thickness of the IJP layer corresponding to position 4.

[0177] This embodiment of the application removes the support group 1022z in the area of ​​the display area 102a near the bonding area 102b1, allowing the support group 1022z to be closer to the thicker part of the IJP layer. This ensures that the generated PT (Potentially Transformed PT) can fall into the thicker part of the IJP layer. Even if the PT stands upright and forms an HZ (High-Zone) PT due to ESD, the HZ PT can still be encapsulated by the thicker IJP. This embodiment of the application considers the stress borne by the support structure, the location where the PT falls, and the thickness of the IJP layer to ensure that, without introducing new PTs, the second support structure 104 supports the mask, reducing the capacitance of the conductive layer in the mask and display panel 102, reducing ESD risk, and thus reducing the occurrence rate of HZ PTs. This reduces the reliability test risk caused by HZ PTs leading to encapsulation failure, ensuring the quality of the display panel 102.

[0178] In this embodiment, the display panel 102 can be obtained by cutting a display panel mother plate. Optionally, the display panel mother plate includes a module cutting track and a panel cutting track. The module cutting track is located on the side of the blocking structure 1024 away from the display area 102a, and the panel cutting track is located on the side of the module cutting track away from the display area 102a. In the process of cutting the display panel 102 from the display panel mother plate, the module can be cut along the module cutting track first, and then the display panel 102 can be obtained by cutting along the panel cutting track.

[0179] Optionally, the light-emitting unit 1021 of the display panel 102 further includes an anode layer, an organic light-emitting functional layer, and a cathode layer. The organic light-emitting functional layer may include: a hole inject layer (HIL), a hole transport layer (HTL), a light-emitting layer, an electron transport layer (ETL), and an electron injection layer (EIL). The hole inject layer, hole transport layer, electron transport layer, electron injection layer, and cathode layer can be fabricated using an open mask. For example, Figures 7, 12, and 14 to 16 illustrate the film boundaries obtained by open mask fabrication. Alternatively, the light-emitting layer can be fabricated using an FMM and an F-mask.

[0180] Optionally, the display panel 102 may further include a cover layer located on the side of the cathode layer away from the mother substrate 101. The cover layer may include a first sub-layer and a second sub-layer. The first sub-layer may be made of lithium fluoride (LiF), and the second sub-layer may be a light extraction layer (CPL). The cover layer can be used to improve the optical characteristics of the light-emitting unit 1021 in the display panel 102.

[0181] In this embodiment, referring to FIG11, the display panel 102 further includes a pixel defining layer 1026, which is located on the side of the anode layer n1 away from the display panel motherboard 101. The first support structure 1022 and the second support structure 104 can be made of the same material and fabricated using the same process. The first support structure 1022 can be located on the side of the pixel defining layer 1026 away from the display panel motherboard 101.

[0182] Optionally, the first support structure 1022 and the second support structure 104 can be made of the same material as the pixel defining layer 1026 and fabricated based on a halftone mask. In this embodiment, the support group can be removed and the second support structure 104 can be added to the invalid area by changing the halftone mask. Furthermore, other process conditions and processes remain unchanged.

[0183] In summary, this application provides a display panel motherboard, which includes a motherboard substrate, multiple display panels located in multiple panel areas, a test element group located in an invalid area, and a second support structure located in the invalid area. The third sub-display area of ​​the display panel near the bonding area and the first sub-display area far from the bonding area do not have a first support structure, while the second sub-display area of ​​the display panel has a first support structure. Even if the relative displacement between the mask and the first support structure during the vapor deposition process causes material to fall and form a PT (partial pressure test), the PT can be made closer to the second sub-display area. Since the encapsulation film layer is thicker in the second sub-display area, even if the PT is high, it can avoid puncturing the encapsulation film layer, ensuring the encapsulation effect of the encapsulation film layer and improving the yield and display effect of the display panel. Furthermore, by sharing the support for the mask used in the vapor deposition process between the first and second support structures, the support effect for the mask can be ensured, improving the manufacturing yield of the display panel motherboard.

[0184] This application embodiment also provides a display panel 102, which can be obtained by cutting the display panel mother plate provided in the above embodiments. Figure 39 is a structural schematic diagram of a display panel provided in this application embodiment. Referring to Figure 39, the display panel 102 includes: a substrate 1027, a plurality of light-emitting units 1021, a plurality of first support structures 1022, and an encapsulation film layer 1023. The substrate 1027 can be obtained by cutting the mother plate substrate 101 in the display panel mother plate.

[0185] Referring to Figure 6, the display panel 102 includes a display area 102a and a peripheral area 102b surrounding the display area 102a. The display area 102a includes a first sub-display area 102a1, a second sub-display area 102a2, and a third sub-display area 102a3 arranged along a first direction X. A plurality of light-emitting units 1021 are located in the display area 102a and are used to emit light.

[0186] Multiple first support structures 1022 are located in the second sub-display area 102a2, and the orthographic projection of the first support structure 1022 on the substrate 1027 is located within the orthographic projection of the adjacent light-emitting units 1021 on the substrate 1027. In addition, the first sub-display area 102a1 and the third sub-display area 102a3 do not have first support structures 1022.

[0187] The encapsulation film layer 1023 is located on the side of the plurality of light-emitting units 1021 and the plurality of first support structures 1022 away from the substrate 1027. The thickness of the portion of the encapsulation film layer 1023 located in the first sub-display area 102a1 and the portion located in the third sub-display area 102a3 is less than the thickness of the portion of the encapsulation film layer 1023 located in the second sub-display area 102a2.

[0188] Since the display panel 102 can have essentially the same technical effects as the display panel motherboard described in the previous embodiments, for the sake of brevity, the technical effects of the display panel 102 will not be described again here.

[0189] Figure 40 is a schematic diagram of a display device provided in an embodiment of this application. Referring to Figure 40, the display device includes a power supply component 200 and a display panel 102 as provided in the above embodiment. The power supply component 200 is connected to the display panel 102 and is used to supply power to the display panel 102.

[0190] Optionally, the display device can be an organic light-emitting diode (OLED) display device, such as an active-matrix organic light-emitting diode (AMOLED) display device. Alternatively, the display device can be a quantum dot light-emitting diode (QLED) display device. The display device can be any suitable display device, including but not limited to mobile phones, tablets, televisions, monitors, laptops, digital photo frames, car navigation systems, and e-readers—any product or component with a display function.

[0191] Since the display device can have essentially the same technical effects as the display panel motherboard described in the previous embodiments, for the sake of brevity, the technical effects of the display device will not be described again here.

[0192] The terminology used in the embodiments section of this application is for explaining the embodiments of this application only and is not intended to limit this application. Unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains.

[0193] The Description of Embodiments section of this application describes several embodiments; however, this description is exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0194] This application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive scheme as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive schemes to form another unique inventive scheme as defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application may be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

[0195] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims concerning the method and / or process should not be limited to the steps performed in the written order, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application.

[0196] In the accompanying drawings, the size of one or more constituent elements, the thickness of layers, or areas are sometimes exaggerated for clarity. Furthermore, the drawings schematically illustrate ideal examples, and this application is not limited to the shapes or numerical values ​​shown in the drawings.

[0197] The ordinal numbers "first," "second," and "third" used in this specification are for the purpose of avoiding confusion among the constituent elements, not for limiting the quantity. The term "multiple" in this application refers to two or more quantities.

[0198] The thickness range of the film layer in this specification is A to B, which means that the thickness is between A and B, including the two endpoints of A and B.

[0199] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the described constituent elements. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0200] In this specification, unless otherwise expressly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection, an indirect connection via an intermediate component, or a connection within two components. Those skilled in the art will understand the meaning of the above terms in this application according to the specific circumstances.

[0201] In this specification, a transistor is a device that includes at least three terminals: a gate electrode, a drain electrode (drain terminal, drain region, or drain), and a source electrode (source terminal, source region, or source). A transistor has a channel region between the drain and source electrodes, and current can flow through the drain electrode, the channel region, and the source electrode. Note that in this specification, the channel region refers to the region through which current primarily flows.

[0202] In this specification, the first terminal of a transistor can be the drain electrode and the second terminal of a transistor can be the source electrode, or vice versa. In cases where transistors with opposite polarities are used or where the current direction changes during circuit operation, the functions of the "source electrode" and "drain electrode" are sometimes interchanged. Therefore, in this specification, the "source electrode" and "drain electrode" can be interchanged, and the "source terminal" and "drain terminal" can be interchanged.

[0203] In this specification, "connection" includes the situation where constituent elements are connected together by a component that has a certain electrical function. There are no particular limitations on the "component that has a certain electrical function," as long as it enables the transmission of electrical signals between the connected constituent elements. Examples of "components that have a certain electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other components with various functions.

[0204] In this specification, the terms "film" and "layer" may be interchanged. For example, "conductive layer" may sometimes be replaced with "conductive film." Similarly, "insulating film" may sometimes be replaced with "insulating layer."

[0205] In this application, "thickness" and "height" refer to the vertical distance between the surface of the film layer away from the substrate and the surface of the film layer closer to the substrate.

[0206] In this specification, triangles, rectangles, trapezoids, pentagons, or hexagons are not strictly defined; they can be approximate triangles, rectangles, trapezoids, pentagons, or hexagons. Small deformations due to tolerances are possible, as are chamfers, curved edges, and other variations.

[0207] In this application, "approximately" means a value that is not strictly defined and is within the allowable range of process and measurement errors.

[0208] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display panel motherboard, characterized in that, The display panel motherboard includes: A motherboard substrate, the motherboard substrate including multiple panel areas and invalid areas located between adjacent panel areas; Multiple display panels are provided, with each display panel corresponding to a specific panel area. Each display panel is located within a corresponding panel area. Each display panel includes a display area and a peripheral area surrounding the display area. The display area includes a first sub-display area, a second sub-display area, and a third sub-display area arranged along a first direction. The peripheral area includes a bonding area located on the side of the third sub-display area away from the first sub-display area. The display panel includes multiple light-emitting units located in the display area, multiple first support structures located in the second sub-display area, and an encapsulation film layer located on the side of the multiple light-emitting units and the multiple first support structures away from the mother substrate. The thickness of the encapsulation film layer in the portion located in the first sub-display area and the thickness in the portion located in the third sub-display area are less than the thickness of the encapsulation film layer in the portion located in the second sub-display area. A test element group is located in the invalid area and is connected to the display panel; And a second support structure, the second support structure being located in the invalid region, and the second support structure being located in the test element group near the first sub-display area.

2. The display panel motherboard according to claim 1, characterized in that, The plurality of first support structures include: a plurality of support groups arranged along the first direction, the plurality of support groups including: a plurality of first support groups and a plurality of second support groups, the plurality of first support groups and the plurality of second support groups being arranged alternately in the first direction; The first support group includes a plurality of first sub-support parts arranged along the second direction, and the second support group includes a plurality of second sub-support parts arranged along the second direction. The plurality of first sub-support parts in the first support group and the plurality of second sub-support parts in the second support group arranged adjacent to each other in the first direction are staggered in the second direction. The second direction intersects with the first direction.

3. The display panel motherboard according to claim 2, characterized in that, The width of the first sub-display area along the first direction and the width of the third sub-display area along the first direction are both greater than or equal to the distance between two adjacent support groups along the first direction.

4. The display panel motherboard according to claim 3, characterized in that, The distance between two adjacent first support groups along the first direction is equal to the distance between two adjacent second support groups along the first direction; The width of the third sub-display area along the first direction is greater than or equal to the distance between two adjacent first support groups along the first direction; There is a second support group between two adjacent first support groups.

5. The display panel motherboard according to claim 3, characterized in that, The distance between two adjacent first support groups along the first direction is equal to the distance between two adjacent second support groups along the first direction; The width of the third sub-display area along the first direction is greater than or equal to the distance between the first first support group and the second first support group along the first direction; Among them, there is a first second support group, a third first support group and a second second support group arranged along the first direction between the first first support group and the second first support group.

6. The display panel motherboard according to claim 3, characterized in that, The distance between two adjacent first support groups along the first direction is equal to the distance between two adjacent second support groups along the first direction; The width of the third sub-display area along the first direction is greater than or equal to the distance between the first first support group and the second first support group along the first direction; Between the first first support group and the second first support group, there are a first second support group, a third first support group, a second second support group, a fourth first support group, and a third second support group arranged along the first direction.

7. The display panel motherboard according to claim 5 or 6, characterized in that, The width of the first sub-display area along the first direction is greater than or equal to the distance between the first first support group and the second first support group along the first direction.

8. The display panel motherboard according to any one of claims 4 to 6, characterized in that, The width of the first sub-display area along the first direction is greater than or equal to the distance between two adjacent first support groups along the first direction; There is a second support group between two adjacent first support groups.

9. The display panel motherboard according to any one of claims 1 to 6, characterized in that, The test element group includes: a first test section and a second test section; The distance between the first test section and the display panel is greater than the distance between the second test section and the display panel; The second support structure includes a first part and a second part, the first part being located between the first test part and the display panel, and the second part being located between the second test part and the display panel; the width of the first part along the first direction is greater than the width of the second part along the first direction.

10. The display panel motherboard according to claim 9, characterized in that, The first part includes at least one strip-shaped third sub-support portion arranged along the first direction and extending along the second direction.

11. The display panel motherboard according to claim 10, characterized in that, The first part includes a plurality of the third sub-supports arranged along the first direction and extending along the second direction.

12. The display panel motherboard according to claim 11, characterized in that, The first portion includes two third sub-support portions arranged along the first direction and extending along the second direction; or, The first part includes four third sub-supports arranged along the first direction and extending along the second direction.

13. The display panel motherboard according to any one of claims 10 to 12, characterized in that, The second part includes at least one strip-shaped fourth sub-support portion arranged along the first direction and extending along the second direction.

14. The display panel motherboard according to claim 9, characterized in that, The first part includes a first main body portion and a first protrusion portion located between the first main body portion and the first test portion; The second part includes a second main body portion and a second protrusion portion located between the second main body portion and the second test portion; The first main body and the second main body are an integral structure.

15. The display panel motherboard according to claim 14, characterized in that, At least a portion of the boundary of the first protrusion and at least a portion of the boundary of the second protrusion are arc-shaped.

16. A display panel, characterized in that, The display panel is obtained by cutting the display panel mother plate according to any one of claims 1 to 15.

17. The display panel according to claim 16, characterized in that, The display panel includes: A substrate, the substrate including a display area and a peripheral area surrounding the display area, the display area including a first sub-display area, a second sub-display area and a third sub-display area arranged along a first direction; Multiple light-emitting units are located in the display area; A plurality of first support structures are located in the second sub-display area, and the orthographic projection of the first support structure on the substrate is located within the orthographic projection of the interval between adjacent light-emitting units on the substrate. And an encapsulation film layer, the encapsulation film layer being located on the side of the plurality of light-emitting units and the plurality of first support structures away from the substrate; The thickness of the encapsulation film layer in the portion located in the first sub-display area and the thickness of the portion located in the third sub-display area are less than the thickness of the encapsulation film layer in the portion located in the second sub-display area.

18. A display device, characterized in that, The display device includes: a power supply component and a display panel as described in claim 16 or 17; The power supply component is connected to the display panel, and the power supply component is used to supply power to the display panel.

Images