Protection structure and packaging device of hybrid OLED display panel

Abstract

The invention provides a protection structure and a packaging device of a mixed type OLED display panel, the protection structure is arranged between two adjacent layers of mixed type OLED display substrates, and each mixed type OLED display substrate comprises a substrate, the mixed type OLED display panel arranged on the substrate in an array mode and a plurality of test pieces located on the periphery of the mixed type OLED display panel. In the thickness direction of the protection structure, the two sides of the protection structure make contact with the upper-layer mixed type OLED display panel and the lower-layer mixed type OLED display panel respectively, a plurality of grooves are formed in the side, facing the lower-layer mixed type OLED display panel, of the protection structure, and the grooves correspond to the test pieces so that a gap can be formed between the protection structure and the test pieces. The protection structure does not contact with the test piece, so that the protection structure does not contact with the test piece even if the upper and lower layers of substrates shake front, back, left and right in the transportation process of the hybrid OLED display substrate, the test piece is protected, and the risk that the test piece is warped and even peeled off is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of OLED display panel packaging, and in particular to a protective structure and packaging device for a hybrid OLED display panel. Background Art

[0002] The hybrid OLED display substrate includes a plurality of hybrid OLED display panels arranged in an array on a base substrate, and a plurality of test pieces located around the hybrid OLED display panels. During the transfer and transportation of the hybrid OLED display substrate, multiple layers of the hybrid OLED display substrates are often required to be stacked and placed. Two adjacent layers of the hybrid OLED display substrates will move relative to each other during transportation, thereby increasing the risk of warping or even peeling of the test pieces. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a protective structure and packaging device for a hybrid OLED display panel, so as to protect the hybrid OLED display panel and the test pieces around the hybrid OLED display panel during transportation, thereby solving the problem that the test pieces are prone to warping or even peeling. The specific technical solution is as follows:

[0004] In a first aspect, the present application provides a protective structure for a hybrid OLED display panel, wherein the protective structure for the hybrid OLED display panel is arranged between two adjacent layers of hybrid OLED display substrates, wherein the hybrid OLED display substrate comprises a base substrate, a hybrid OLED display panel arrayed on the base substrate, and a plurality of test pieces located around the OLED display panel, wherein along the thickness direction of the protective structure for the hybrid OLED display panel, two sides of the protective structure for the hybrid OLED display panel are respectively arranged in contact with the upper hybrid OLED display panel and the lower hybrid OLED display panel, and a plurality of grooves are provided on a side of the protective structure for the hybrid OLED display panel facing the lower hybrid OLED display panel, wherein the grooves are arranged corresponding to the test pieces, so that there is a gap between the protective structure for the hybrid OLED display panel and the test pieces.

[0005] In addition, according to the protective structure of the hybrid OLED display panel provided in the first aspect of the present application, it may also have the following technical features:

[0006] In some embodiments, the orthographic projection of the test piece on the base substrate is located within the orthographic projection range of the groove opening on the base substrate.

[0007] In some embodiments, a cross-section of the groove along the thickness direction of the protective structure of the hybrid OLED display panel is rectangular, trapezoidal or arched.

[0008] In some embodiments, an opening area of ​​the groove gradually increases along a direction approaching the substrate.

[0009] In some embodiments, the slope angle of the sidewall forming the groove is 30°-70°.

[0010] In some embodiments, the depth of the groove is less than the thickness of the protection structure of the hybrid OLED display panel.

[0011] In some embodiments, the depth of the groove is greater than or equal to 2 mm.

[0012] In some embodiments, the protective structure of the hybrid OLED display panel is made of silicone, rubber or foam.

[0013] In some embodiments, one of the grooves corresponds to one or more test pieces.

[0014] In some embodiments, the side of the protective structure of the hybrid OLED display panel facing the upper OLED display panel is flat.

[0015] In some embodiments, the thickness of the protective structure of the hybrid OLED display panel is 2.5 mm-5 mm.

[0016] In some embodiments, the protective structure of the hybrid OLED display panel is in contact with the underlying OLED display panel via a protective film, and the protective film is a polyethylene terephthalate plastic film or a polyimide film.

[0017] A second aspect of the present application provides a packaging device, which includes a packaging box and a protective structure of a hybrid OLED display panel stacked in the packaging box, and the protective structure of the hybrid OLED display panel is the protective structure of the hybrid OLED display panel described above.

[0018] Beneficial effects of the embodiments of the present application:

[0019] The protective structure and packaging device of the hybrid OLED display panel provided in the embodiments of the present application have a groove in the protective structure of the hybrid OLED display panel at the position corresponding to the test piece, so that the protective structure of the hybrid OLED display panel does not contact the test piece. Therefore, even if the upper and lower layers of the hybrid OLED display substrate shake back and forth or left and right during transportation, the protective structure of the hybrid OLED display panel will not touch the test piece, thereby protecting the test piece and reducing the risk of warping or even peeling of the test piece.

[0020] Of course, implementing any product or method of the present application does not necessarily require achieving all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other embodiments can also be obtained based on these drawings.

[0022] Figure 1 is a schematic diagram of a gasket structure in the related art;

[0023] Figure 2 A schematic diagram of transporting and packaging a hybrid OLED display substrate in the related art;

[0024] Figure 3 A schematic diagram of a protective structure of a hybrid OLED display panel provided in an embodiment of the present application in a first embodiment;

[0025] Figure 4 A schematic diagram of the matching structure of the protection structure of the hybrid OLED display panel and the hybrid OLED display substrate provided in an embodiment of the present application;

[0026] Figure 5 A schematic diagram of stacking the hybrid OLED display substrate provided in an embodiment of the present application in a packaging device;

[0027] Figure 6 A top view of a hybrid OLED display substrate provided in an embodiment of the present application;

[0028] Figure 7 A top view of a protective structure of a hybrid OLED display panel provided in an embodiment of the present application;

[0029] Figure 8 A schematic diagram of a second embodiment of a protective structure of a hybrid OLED display panel provided in an embodiment of the present application;

[0030] Fig. 9 A schematic diagram of a third embodiment of the protective structure of the hybrid OLED display panel provided in an embodiment of the present application;

[0031] Fig.10 A schematic diagram of a fourth embodiment of a protective structure of a hybrid OLED display panel provided in an embodiment of the present application;

[0032] Fig.11 A schematic diagram of the preparation process of the OLED display panel provided in an embodiment of the present application.

[0033] The reference numerals are as follows:

[0034] Packaging box 1; protective structure 10 of hybrid OLED display panel; groove 11; side wall 111; slope angle α; depth H; hybrid OLED display substrate 20; base substrate 21; hybrid OLED display panel 22; test piece 23; protective film 30; gasket 40. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field based on the present application belong to the scope of protection of the present application.

[0036] The hybrid OLED (Organic Light-Emitting Diode) display panel 22 is a popular OLED display panel at present. The hybrid OLED display panel 22 adopts a rigid substrate plus a flexible package. This rigid substrate plus flexible package technology is called Hybrid technology. The hybrid OLED display panel using this technology is a hybrid OLED display panel 22. The rigid substrate can be a glass substrate. Compared with the traditional rigid substrate and rigid package and flexible substrate and flexible package technology, Hybrid has the great advantages of high strength and low cost. Specifically, the hybrid OLED display panel 22 generally includes a base substrate 21 and a plurality of pixel units arranged on the base substrate 21 and an encapsulation layer for encapsulating the pixel units. The pixel unit includes a thin film transistor and a light-emitting layer. The light-emitting layer is electrically connected to the thin film transistor. The light-emitting layer includes a cathode, an anode and a light-emitting material arranged between the cathode and the anode. The hybrid OLED display panel 22 generally uses an organic light-emitting material, and the light-emitting material is a self-luminous material.

[0037] In the actual production process, in order to improve production efficiency, a plurality of hybrid OLED display panels 22 are generally produced on a large-sized (for example, 1500mm*925mm) base substrate 21, and then the base substrate 21 is sliced ​​to form independent hybrid OLED display panels 22 of the required size. The cutting process is generally performed by downstream manufacturers. Therefore, during the transportation process, a large-sized base substrate 21 and the plurality of hybrid OLED display panels 22 thereon are transported together. Due to their large size and thus large weight, the surface encapsulation layer of the hybrid OLED display panel 22 is easily damaged due to vibration during transportation.

[0038] In the actual transportation process, Figure 1, Figure 2 As shown, multiple layers of hybrid OLED display substrates 20 are stacked, and two adjacent layers of hybrid OLED display substrates 20 are separated by a gasket 40. However, the gasket 40 is in direct contact with the lower hybrid OLED display panel 22 and the test piece 23. This causes the test piece 23 to rub against the gasket 40 during transportation of the product to the OEM (outsourced) factory, thereby causing wear, which seriously affects the product yield and brings great economic losses.

[0039] And because the hybrid OLED display panel 22 uses a thin film material to replace the upper glass substrate, the hybrid OLED display panel 22 has the advantage of being thinner. After the etching process, only less than 0.5 mm to 0.2 mm is left. However, this also means that the hybrid OLED display panel 22 is very easy to break when it enters the next process. Therefore, during the actual transportation process, the hybrid OLED display panel 22 is very likely to be damaged.

[0040] In order to solve the above technical problems, the first aspect of the embodiment of the present application provides a protective structure 10 of a hybrid OLED display panel, such as Figure 3-Figure 5 As shown, Figure 3 is a schematic diagram of a protective structure 10 of a hybrid OLED display panel, Figure 4 Schematic diagram of the coordination structure of the protection structure 10 of the hybrid OLED display panel and the hybrid OLED display substrate 20; Figure 5 The present invention is a schematic diagram of an application scenario of a protective structure 10 of a hybrid OLED display panel. The protective structure 10 of the hybrid OLED display panel is disposed between two adjacent layers of hybrid OLED display substrates 20. The hybrid OLED display substrate 20 includes a base substrate 21, a hybrid OLED display panel 22 arrayed on the base substrate 21, and a plurality of test pieces 23 located around the hybrid OLED display panel 22. Along the thickness direction of the protective structure 10 of the hybrid OLED display panel, the two sides of the protective structure 10 of the hybrid OLED display panel are respectively in contact with the upper hybrid OLED display panel 22 and the lower hybrid OLED display panel 22. The protective structure 10 of the hybrid OLED display panel is provided with a plurality of grooves 11 on one side facing the lower hybrid OLED display panel 22. The grooves 11 are arranged corresponding to the test pieces 23 so that there is a gap between the protective structure 10 of the hybrid OLED display panel and the test pieces 23.

[0041] In the present embodiment, since the protective structure 10 of the hybrid OLED display panel is provided with a groove 11 at the position corresponding to the test piece 23, the protective structure 10 of the hybrid OLED display panel does not contact the test piece 23. Therefore, even if the upper and lower layers of the hybrid OLED display substrate 20 are shaken back and forth or left and right during transportation, the protective structure 10 of the hybrid OLED display panel will not touch the test piece 23, thereby protecting the test piece 23 and reducing the risk of warping or even peeling of the test piece 23.

[0042] It should be noted that the test pad 23 can be specifically a test circuit for screen detection, or a circuit related to point screen detection, which can detect defects in the display screen before the display module is put into use, reduce the consumption of display module resources by the display screen with defects, and thus reduce unnecessary production costs. The display screen before the display module is put into use cannot be directly lit because the polarizer has not been attached, and the IC (Interated circuit, integrated circuit) and FPC (Flexible Printed Circuitboard) have not been welded. In order to light up the display screen, all signal lines are usually connected in groups in the single-layer area of ​​the display screen, and the grouped routing is led out and connected to the test pad 23. When the test pad 23 is loaded with a suitable electrical signal through an external probe, the display screen can be lit with the external polarizer to detect the defects in the display screen.

[0043] In some embodiments, Figure 4 , Figure 6 and Figure 7 As shown, Figure 6 is a top view of a hybrid OLED display substrate 20, Figure 7 1 is a top view of the protective structure 10 of the hybrid OLED display panel. The orthographic projection of the test piece 23 on the base substrate 21 is located within the orthographic projection range of the opening of the groove 11 on the base substrate 21 .

[0044] In this embodiment, the orthographic projection of the test piece 23 on the base substrate 21 is within the orthographic projection range of the opening of the groove 11 on the base substrate 21, that is, the cross-sectional area of ​​the test piece 23 perpendicular to the thickness direction of the base substrate 21 is smaller than the area of ​​the opening of the groove 11, so that there is a certain gap between the test piece 23 and the side wall 111 of the groove 11. Therefore, even if the protective structure 10 of the hybrid OLED display panel just contacts the test piece 23 under the pressure of the upper hybrid OLED display substrate 20, the gap can allow the hybrid OLED display substrate 20 under the protective structure 10 of the hybrid OLED display panel to have a certain range of movement forward and backward and left and right, further reducing the risk of warping or even peeling of the test piece 23 during shaking.

[0045] In some embodiments, Figure 3 , Figure 8-Figure 10 As shown, the cross section of the groove 11 along the thickness direction of the protective structure 10 of the hybrid OLED display panel is rectangular, trapezoidal or arched.

[0046] In this embodiment, the rectangular groove 11 has a simple structure and is easy to manufacture, which can simplify the manufacturing process of the groove 11. The trapezoidal groove 11 can reduce the volume of the protective structure 10 of the hybrid OLED display panel that needs to be removed while ensuring that the opening area is larger than the cross-sectional area of ​​the test piece 23 perpendicular to the thickness direction, which is beneficial to improving the support strength of the protective structure 10 of the hybrid OLED display panel. The arched groove 11 means that the side of the groove 11 away from the base substrate 21 is arc-shaped, similar to the structure of an arch bridge, which can concentrate the pressure acting on the protective structure 10 of the hybrid OLED display panel through the arched groove 11 to the two ends of the groove 11, thereby significantly improving the bearing capacity of the protective structure 10 of the hybrid OLED display panel at the groove 11.

[0047] Among them, when the groove 11 is a trapezoid, the trapezoid is not limited to an isosceles trapezoid, and can be a trapezoid in other forms such as a right-angle trapezoid. Of course, in order to avoid interference with the test piece 23, the groove 11 can also be a special-shaped structure, and the specific shape of the special-shaped structure can be selected according to the shape of the test piece 23, which is conducive to reducing the actual opening area of ​​the groove 11 on the one hand, and on the other hand, it is conducive to improving the avoidance effect.

[0048] In some embodiments, Figure 8 As shown, the opening area of ​​the groove 11 gradually increases in a direction approaching the base substrate 21 .

[0049] In this embodiment, the opening area of ​​the groove 11 gradually increases in the direction approaching the base substrate 21, which can increase the accommodating area at the opening of the groove 11 and increase the tolerance between the test piece 23 and the opening of the groove 11, thereby further reducing the risk of interference between the groove 11 and the test piece 23.

[0050] In this embodiment, the opening area of ​​the groove 11 gradually increases in the direction close to the substrate 21. It can be a gradual increase without a sudden change in the middle, that is, the slope of the side wall 111 forming the groove 11 remains unchanged, or it can be a gradual increase with a sudden change in the middle, such as a step-like change, and the slopes of the front and rear sections of the step-like change remain equal, or the side wall 111 forming the groove 11 is composed of multiple sections with different slopes. The specific design form of the groove 11 can be selected according to actual conditions. In order to prevent the groove 11 from interfering with the lower test piece 23 during vibration or shaking, it is only necessary to expand the area of ​​the opening of the groove 11.

[0051] Alternatively, if Figure 8As shown, the slope angle α of the side wall 111 forming the groove 11 is 30°-70°, for example, the slope angle α can be 30°, 45°, 50°, 60°, 70°, etc.

[0052] In this embodiment, the side wall 111 of the groove 11 refers to the wall surrounding the opening of the groove 11, and the slope angle α of the side wall 111 is 30°-70°, so that the opening of the groove 11 tends to increase along the direction close to the base substrate 21, which can increase the accommodating area at the opening of the groove 11 and increase the tolerance between the test piece 23 and the opening of the groove 11, thereby further reducing the risk of interference between the groove 11 and the test piece 23. And under the premise that the opening of the groove 11 is certain, compared with the groove 11 with a slope angle α of 90, it can reduce the submission that needs to be removed from the protective structure 10 of the hybrid OLED display panel, which is conducive to improving the supporting strength of the protective structure 10 of the hybrid OLED display panel.

[0053] In some embodiments, Figure 1 , Figure 8-Figure 10 The depth H of the groove 11 is smaller than the thickness of the protective structure 10 of the hybrid OLED display panel.

[0054] In this embodiment, the groove 11 is a blind hole structure, and the side of the groove 11 away from the base substrate 21 is a closed end of the blind hole, which can completely separate the upper and lower hybrid OLED display substrates 20, and can prevent impurities such as debris from the upper layer from entering the lower hybrid OLED display substrate 20 and causing damage to the lower hybrid OLED display substrate 20. In addition, the blind hole structure of the groove 11 is also conducive to improving the support strength of the protective structure 10 of the hybrid OLED display panel.

[0055] Optionally, the depth H of the groove 11 is greater than or equal to 2 mm. For example, the depth H of the groove 11 may be 2 mm, 2.5 mm, 3 mm, 3.5 mm, etc.

[0056] In this embodiment, the greater the depth H of the groove 11, the lower the risk of interference with the test piece 23. However, the greater the depth H of the groove 11, the more obvious the weakening of the supporting strength of the protective structure 10 of the hybrid OLED display panel. Therefore, the depth H of the groove 11 can be selected within a reasonable range.

[0057] Optionally, the depth H of the groove 11 is greater than or equal to 2 mm and less than or equal to 4 mm.

[0058] In some embodiments, the protective structure 10 of the hybrid OLED display panel is made of silicone, rubber or foam.

[0059] In this embodiment, the protective structure 10 of the hybrid OLED display panel can be made of materials with good elasticity such as silicone, rubber or foam, so that the protective structure 10 of the hybrid OLED display panel can have a certain buffering effect while playing a supporting role, thereby reducing the risk of damage to the hybrid OLED display substrate 20 due to vibration during transportation. In addition, materials with good elasticity such as silicone, rubber or foam are soft in texture and are not easy to scratch the flexible packaging layer of the hybrid OLED display panel 22.

[0060] In order to protect the flexible encapsulation layer of the hybrid OLED display panel 22 from being scratched, the hardness of the silicone, rubber or foam can be controlled, for example, the Shore hardness of the silicone, rubber or foam is controlled between 40 degrees and 70 degrees, for example, it can be 40 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, etc. Generally speaking, the greater the hardness and strength of the material, the lower the elasticity and flexibility, and the higher the elasticity and flexibility, the lower the hardness and strength of the material. The hardness of the foam can be controlled by controlling the foaming rate of the foam, and the higher the foaming rate, the lower the hardness of the foam.

[0061] The above only exemplifies the common manufacturing materials of the protective structure 10 of the hybrid OLED display panel, but does not constitute a limitation to the present application. The protective structure 10 of the hybrid OLED display panel made of other materials with good elasticity is also within the protection scope of the present application.

[0062] In some embodiments, Fig. 9 , Fig.10 As shown, one groove 11 corresponds to one or more test pieces 23 .

[0063] In this embodiment, since the distribution density of the test pieces 23 is not completely consistent, for positions with a lower distribution density, such as Fig. 9 As shown, the grooves 11 can be made to correspond to the test pieces 23 one by one. For locations with a high distribution density, one groove 11 can correspond to multiple test pieces 23 at the same time, such as two, three, four, five, etc. At locations with a high distribution density of test pieces 23, such as Fig.10 As shown, one groove 11 corresponds to a plurality of test pieces 23 , which greatly reduces the number of grooves 11 , and is beneficial to improving the manufacturing efficiency of the protective structure 10 of the hybrid OLED display panel.

[0064] In some embodiments, Figure 4 As shown, the side of the hybrid OLED display panel protection structure 10 facing the upper hybrid OLED display panel 22 is a flat surface.

[0065] In this embodiment, the side of the protective structure 10 of the hybrid OLED display panel facing the upper hybrid OLED display panel 22 is set to be a plane, which can increase its contact area with the base substrate 21 of the upper hybrid OLED display substrate 20, which is beneficial to increase the contact friction between the two, thereby reducing the probability of shaking between the two.

[0066] In some embodiments, the thickness of the protective structure 10 of the hybrid OLED display panel is 2.5mm-5mm, for example, it can be 2.5mm, 3mm, 3.5mm, 4mm, 5mm, etc. This thickness enables the protective structure 10 of the hybrid OLED display panel to have both good supporting effect and good buffering effect, and can reasonably select the depth H of the groove 11 arranged thereon.

[0067] It should be noted that when the protective structure 10 of the hybrid OLED display panel is 2.5 mm, the depth H of the groove 11 is greater than or equal to 2 mm, but should not exceed 2.2 mm, for example, it can be 2 mm or 2.1 mm. When the total thickness of the protective structure 10 of the hybrid OLED display panel is large, the depth H of the groove 11 can be appropriately increased.

[0068] In order to further reduce the mutual wear between the protection structure 10 of the hybrid OLED display panel and the hybrid OLED display panel 22, the hybrid OLED display panel 22 is protected by a protective film 30 attached to the side of the encapsulation layer away from the base substrate 21 before it leaves the factory and enters the OEM factory. Fig.11 As shown, the protective film 30 is patterned by laser cutting, so that the outer side of each hybrid OLED display panel 22 is covered with the protective film 30 , but there is no protective film 30 on the peripheral test piece 23 .

[0069] The protective structure 10 of the hybrid OLED display panel is in contact with the underlying hybrid OLED display panel 22 via a protective film 30 . Optionally, the protective film 30 of the hybrid OLED display panel 22 is a polyethylene terephthalate (PET) film or a polyimide (PI) film.

[0070] Among them, PET film has good mechanical properties, and its impact strength is 3 to 5 times that of other films. It has good folding resistance, and is resistant to oil, fat, dilute acid, dilute alkali, and most solvents. It can play a good protective role when attached to the outside of the packaging layer. PI also has good mechanical properties, good heat resistance, and good radiation resistance. It can also play a good protective role when attached to the outside of the packaging layer.

[0071] The protective structure 10 of the hybrid OLED display panel is arranged in contact with the protective film 30 of the hybrid OLED display panel 22 at the position corresponding to the hybrid OLED display panel 22. The protective film 30 has a certain buffering effect, which can play a certain protective role on the hybrid OLED display panel 22 and prevent the hybrid OLED display panel 22 from being damaged. In addition, the protective structure 10 of the hybrid OLED display panel does not directly contact the test piece 23 at the position corresponding to the test piece 23. The pressure from the upper hybrid OLED display substrate 20 mainly acts on the hybrid OLED display panel 22. Therefore, the pressure on the base substrate 21 at the position of the test piece 23 is relatively small, which can reduce the compressive stress on the base substrate 21 around the hybrid OLED display panel 22, thereby preventing the base substrate 21 at this position from being worn or even cracked.

[0072] A second aspect of the present application provides a packaging device, such as Figure 5 As shown, the packaging device includes a packaging box 1 and a hybrid OLED display panel protection structure 10 stacked in the packaging box 1, and the hybrid OLED display panel protection structure 10 is the hybrid OLED display panel protection structure 10 described above.

[0073] Since the packaging device in the present embodiment includes the protective structure 10 of the hybrid OLED display panel arranged in a stacked manner, when the packaging device is used to accommodate the hybrid OLED display substrate 20, the protective structure 10 of the hybrid OLED display panel can separate the two adjacent layers of the hybrid OLED display substrate 20, thereby playing a certain buffering role. Moreover, since the protective structure 10 of the hybrid OLED display panel is provided with a groove 11 at a position corresponding to the test piece 23, the protective structure 10 of the hybrid OLED display panel does not contact the test piece 23. Therefore, even if the upper and lower layers of the hybrid OLED display substrate 20 are swayed back and forth and left and right during transportation, the protective structure 10 of the hybrid OLED display panel will not touch the test piece 23, thereby protecting the test piece 23 and reducing the risk of warping or even peeling of the test piece 23.

[0074] As a feasible way, before stacking the hybrid OLED display substrate 20 in the packaging box 1, a first layer of hybrid OLED display panel protection structure 10 is first placed at the bottom of the packaging box 1, and then the first layer of hybrid OLED display substrate 20 is placed, and then a second layer of hybrid OLED display panel protection structure 10 is placed above the first layer of hybrid OLED display substrate 20, and so on, until the top layer of hybrid OLED display substrate 20, and another layer of hybrid OLED display panel protection structure 10 is placed above the top layer of hybrid OLED display substrate 20, that is, the bottom layer and the top layer of the packaging box 1 both have a layer of hybrid OLED display panel protection structure 10, and two more layers of hybrid OLED display panel protection structure 10 are provided, which can increase the buffering effect of the hybrid OLED display panel protection structure 10, thereby better protecting the hybrid OLED display substrate 20 in the packaging box 1.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0076] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0077] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are included in the protection scope of the present application.

Claims

1. A protective structure for a hybrid OLED display panel, characterized in that: The protective structure of the hybrid OLED display panel is arranged between two adjacent layers of hybrid OLED display substrates. The hybrid OLED display substrate includes a base substrate, a hybrid OLED display panel arranged in an array on the base substrate, and a plurality of test pieces located around the hybrid OLED display panel. Along the thickness direction of the protective structure of the hybrid OLED display panel, two sides of the protective structure of the hybrid OLED display panel are respectively arranged in contact with the upper hybrid OLED display panel and the lower hybrid OLED display panel. The protective structure of the hybrid OLED display panel is provided with a plurality of grooves on one side facing the lower hybrid OLED display panel. The grooves are arranged corresponding to the test pieces so that there is a gap between the protective structure of the hybrid OLED display panel and the test pieces.

2. The protective structure of the hybrid OLED display panel according to claim 1, characterized in that: The orthographic projection of the test piece on the base substrate is located within the orthographic projection range of the groove opening on the base substrate.

3. The protective structure of the hybrid OLED display panel according to claim 2, characterized in that: The cross section of the groove along the thickness direction of the protective structure of the hybrid OLED display panel is rectangular, trapezoidal or arched.

4. The protective structure of the hybrid OLED display panel according to claim 2, characterized in that: The opening area of ​​the groove gradually increases along a direction approaching the base substrate.

5. The protective structure of the hybrid OLED display panel according to claim 4, characterized in that: The slope angle of the side wall forming the groove is 30°-70°.

6. The protective structure of the hybrid OLED display panel according to claim 2, characterized in that: The depth of the groove is less than the thickness of the protective structure of the hybrid OLED display panel.

7. The protective structure of the hybrid OLED display panel according to claim 6, characterized in that: The depth of the groove is greater than or equal to 2 mm.

8. The protective structure of the hybrid OLED display panel according to any one of claims 1 to 7, characterized in that: The protective structure of the hybrid OLED display panel is made of silicone, rubber or foam.

9. The protective structure of the hybrid OLED display panel according to any one of claims 1 to 7, characterized in that: One of the grooves corresponds to one or more test pieces.

10. The protective structure of the hybrid OLED display panel according to any one of claims 1 to 7, characterized in that: The side of the protection structure of the hybrid OLED display panel facing the upper OLED display panel is a flat surface.

11. The protective structure of the hybrid OLED display panel according to any one of claims 1 to 7, characterized in that: The thickness of the protective structure of the hybrid OLED display panel is 2.5 mm-5 mm.

12. The protective structure of the hybrid OLED display panel according to any one of claims 1 to 7, characterized in that: The protective structure of the hybrid OLED display panel is in contact with the underlying OLED display panel via a protective film, and the protective film is a polyethylene terephthalate plastic film or a polyimide film.

13. A packaging device, characterized in that: The packaging device comprises a packaging box and a protective structure of a hybrid OLED display panel stacked in the packaging box. The protective structure of the hybrid OLED display panel is the protective structure of the hybrid OLED display panel according to any one of claims 1 to 12.

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