Light-emitting device and automobile tail lamp

Abstract

The invention provides a light-emitting device and an automobile tail lamp, and relates to the technical field of organic light emitting. The light-emitting device comprises a light-emitting screen body, wherein a packaging structure of the light-emitting screen body comprises a first assembling part; the mounting frame comprises a second assembling part, and the second assembling part can be matched with the first assembling part; and when the first assembling part is matched with the second assembling part, the space between the first assembling part and the second assembling part can be fully filled with the bonding layer, so that the first assembling part and the second assembling part are firmly connected. The packaging structure of the light-emitting screen body comprises the first assembly part and the second assembly part which is arranged on the mounting frame and matched with the first assembly part, and when the first assembly part and the second assembly part are matched with each other, the bonding layer can be completely filled between the first assembly part and the second assembly part, so that stable connection between the first assembly part and the second assembly part is realized; and the light-emitting screen body is prevented from falling off from the mounting frame due to the fact that the two are not firmly connected.

Description

Technical Field

[0001] The present application relates to the field of organic light emitting technology, and in particular to a light emitting device and a car taillight. Background Art

[0002] OLED (Organic Lighting Emitting Display) is a photoelectric device that emits light through carrier injection and recombination. It is a surface light source with clear boundaries, graphical, displayable, and flexible features. OLED screens are becoming more and more popular as light sources for car taillights. When in use, the OLED screen needs to be fixed on a bracket. The fixing method in the prior art is to directly bond the packaging cover of the OLED screen to the corresponding surface of the bracket by double-sided tape. The bracket is generally made of plastic material, and its surface will have irregular bumps after thermoplastic molding. It is easy for the double-sided tape to connect it to the packaging cover to be loosely bonded, which causes the OLED screen to easily fall off the bracket. Summary of the invention

[0003] The purpose of this application is to address the above problems and provide a light-emitting device and a car taillight that are conducive to the firm assembly of an OLED screen and a bracket.

[0004] In a first aspect, the present application provides a light emitting device, comprising:

[0005] A light-emitting screen body, wherein the packaging structure of the light-emitting screen body comprises a first assembly part;

[0006] A mounting frame, the mounting frame comprising a second assembly portion, the second assembly portion being capable of cooperating with the first assembly portion;

[0007] The adhesive layer can be fully filled between the first assembly part and the second assembly part when the first assembly part and the second assembly part are matched, so that the two are firmly connected.

[0008] According to the technical solutions provided in certain embodiments of the present application, the first assembly part includes at least one protrusion and the second assembly part includes groove parts whose number is the same as the protrusion, or the first assembly part includes at least one groove part and the second assembly part includes protrusions whose number is the same as the groove.

[0009] According to the technical solutions provided in certain embodiments of the present application, the bonding layer is formed by solidifying a liquid adhesive.

[0010] According to the technical solutions provided in certain embodiments of the present application, at least one flow-stopping groove is provided on the inner wall of the groove portion.

[0011] According to the technical solution provided in certain embodiments of the present application, the depth of the groove portion is greater than or equal to the sum of the height of the protrusion portion and the thickness of the adhesive layer; preferably, the difference between the depth of the groove portion and the sum of the height of the protrusion portion and the thickness of the adhesive layer is in the range of 0-1.5mm.

[0012] According to the technical solutions provided in certain embodiments of the present application, the depth of the groove portion is 0.3-0.5 mm; the height of the protrusion portion is 0.2-0.4 mm; and the thickness of the adhesive layer is 0.05-0.15 mm.

[0013] According to the technical solutions provided in certain embodiments of the present application, the shape of the protrusion is one or more combinations of a cylinder, a cuboid or a cube; the shape of the groove portion matches the shape of the protrusion.

[0014] According to the technical solution provided in certain embodiments of the present application, the side wall of the protrusion and / or the inner side wall of the groove portion are provided with an elastic protrusion; the inner side wall of the groove portion and / or the side wall of the protrusion portion are provided with a slot corresponding to the elastic protrusion.

[0015] According to the technical solutions provided in some embodiments of the present application, the packaging structure of the light-emitting screen is made of glass, plastic or metal.

[0016] In a second aspect, the present application provides a car taillight, comprising the light-emitting device as described above.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows: the light-emitting device provided by the present application includes a light-emitting screen and a mounting frame, the packaging structure of the light-emitting screen includes a first assembly part, the mounting frame includes a second assembly part that matches the first assembly part, and when the first assembly part and the second assembly part match, the adhesive layer can be filled between the two to make the two firmly connected. The present application achieves a firm connection between the two by setting the packaging structure of the light-emitting screen to include a first assembly part, and a second assembly part that can match the first assembly part on the mounting frame, and when the two match, the adhesive layer can be completely filled between the two, thereby avoiding the light-emitting screen from falling off the mounting frame due to the insufficiently firm connection between the two.

[0018] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a method for fixing an OLED screen and a bracket in the prior art;

[0021] Figure 2 It is a structural schematic diagram of a light emitting device in which the first assembly portion includes a protruding portion and the second assembly portion includes a groove portion (excluding a stop groove);

[0022] Figure 3 It is a structural schematic diagram of a light emitting device in which the first assembly part includes a groove part (excluding the flow stop groove) and the second assembly part includes a convex part;

[0023] Figure 4 A schematic structural diagram of a light emitting device in which the first assembly portion includes a protruding portion and the second assembly portion includes a groove portion (including a stop groove);

[0024] Figure 5 It is a structural schematic diagram of a light emitting device in which the first assembly part includes a groove part (including a stop groove) and the second assembly part includes a convex part;

[0025] Figure 6 A schematic diagram of the size relationship between the protrusion, the groove and the adhesive layer in the light-emitting device provided in an embodiment of the present application;

[0026] Figure 7It is a structural schematic diagram of a light emitting device in which the first assembly portion includes a plurality of protrusions and the second assembly portion includes a plurality of grooves (excluding stop grooves);

[0027] Figure 8 It is a structural schematic diagram of a light emitting device in which the first assembly portion includes a plurality of groove portions and the second assembly portion includes a plurality of protrusion portions (excluding flow-stopping grooves);

[0028] Fig. 9 A schematic diagram of a first structure in which the elastic protrusion and the slot are plugged in cooperation;

[0029] Fig.10 The second structural schematic diagram is a schematic diagram of the elastic protrusion and the slot being plugged in with each other.

[0030] The text annotations in the figure represent:

[0031] 1. Substrate; 21. Package cover; 22. Package structure; 221. First assembly part; 31. Bracket; 32. Mounting frame; 321. Second assembly part; 23. Elastic protrusion; 24. Slot; 41. Double-sided tape; 42. Adhesive layer; 5. Stop groove. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0034] The fixing method of the OLED screen and the bracket in the prior art is as follows: Figure 1As shown, the OLED screen generally includes a substrate 1, a light-emitting functional layer, and a packaging cover plate 21 for packaging the light-emitting functional layer on the substrate 1. The OLED screen is usually assembled and connected with a bracket 31 through the packaging cover plate 21. Specifically, a double-sided adhesive tape 41 is firstly bonded to the surface of the side of the packaging cover plate 21 away from the substrate 1, and then the side of the double-sided adhesive tape 41 away from the packaging cover plate 21 is bonded to the surface of the bracket 31. Since the bracket 31 is generally made of plastic material, its surface for bonding after thermoplastic molding is prone to irregular unevenness, and the packaging cover plate 21 is generally made of glass material, and its surface flatness is relatively high. Therefore, when the bracket 31 and the packaging cover plate 21 are directly bonded by the double-sided adhesive tape 41, the bonding area of ​​the two is difficult to reach 100%, and the packaging cover plate 21 is prone to warping, resulting in a loose bonding between the two, thereby causing the OLED screen to easily fall off the bracket 31.

[0035] To solve the above problems, the present application provides a light emitting device. Figure 2 ,include:

[0036] A light-emitting screen body, wherein the packaging structure 22 of the light-emitting screen body comprises a first assembly portion 221;

[0037] A mounting frame 32, wherein the mounting frame 32 includes a second assembly portion 321, and the second assembly portion 321 can be matched with the first assembly portion 221;

[0038] The adhesive layer 42 can be fully filled between the first assembly portion 221 and the second assembly portion 321 when they are matched, so that the two are firmly bonded.

[0039] Specifically, the light-emitting screen can be an LCD screen, an LED screen, an OLED screen, etc. In this embodiment, the light-emitting screen is an OLED screen, which includes a substrate 1, a light-emitting functional layer installed on the substrate 1, and a packaging structure 22 for packaging the light-emitting functional layer on the substrate 1. The traditional packaging structure has a side away from the substrate 1 that is a plane, that is, Figure 1 As shown in the packaging cover plate 21, the present application sets the side of the packaging structure 22 away from the substrate 1 to include a first assembly portion 221, and includes a second assembly portion 321 on the mounting frame 32 that cooperates with the first assembly portion 221. When the two cooperate with each other, the adhesive layer 42 can be fully filled between the two to achieve firm bonding.

[0040] Optionally, the first assembly portion 221 includes at least one protrusion and the second assembly portion 321 includes grooves having the same number as the protrusions.

[0041] Specifically, the first assembly portion 221 may include only one protrusion, or may include other numbers of protrusions, and the number of grooves included in the second assembly portion 321 is consistent with the number of protrusions.

[0042] like Figure 2 As shown, the first assembly portion 221 includes only one protrusion, and the second assembly portion 321 includes only one groove. The side of the packaging structure 22 away from the substrate 1 protrudes outward to form the first assembly portion 221, that is, the side of the packaging structure 22 away from the substrate 1 forms a boss structure (i.e., a protrusion), and the boss structure can be obtained by etching a certain depth around the surface of the packaging material using photolithography technology, that is, the packaging structure 22 obtained after etching is an integrated structure, and the corresponding position on the mounting frame 32 includes the second assembly portion 321 that cooperates with the first assembly portion 221, and the side of the mounting frame 32 used to mount the OLED screen is recessed inward to form a groove structure (i.e., a groove portion), and the groove structure can be an integrated structure obtained by injection molding.

[0043] like Figure 7 As shown, the first assembly part 221 includes a plurality of protrusions, and there is a certain interval between two adjacent protrusions. The second assembly part 321 includes a plurality of grooves, and there is a certain interval between two adjacent grooves. When applying the adhesive, the adhesive can be applied discontinuously, that is, only applied to the bottom of each groove, or can be applied continuously, that is, a relatively small amount of adhesive is applied to the surface of the groove shoulder between two adjacent grooves. By using an assembly structure in which a plurality of protrusions arranged at intervals and the grooves are matched to assemble the light-emitting screen and the mounting frame 32, on the one hand, the stability of the connection between the two can be enhanced, and on the other hand, the amount of adhesive can be reduced, thereby reducing costs.

[0044] Optionally, the first assembly portion 221 includes at least one groove portion and the second assembly portion 321 includes protrusions having the same number as the groove portions.

[0045] Specifically, the first assembly portion 221 may include only one groove portion, or may include other numbers of groove portions, and the number of protrusions included in the second assembly portion 321 is consistent with the groove portion.

[0046] like Figure 3As shown, the first assembly portion 221 includes only one groove portion, and the second assembly portion 321 includes only one protrusion portion. The side of the packaging structure 22 away from the substrate 1 is recessed inward to form the first assembly portion 221, that is, a groove structure (i.e., a groove portion) is formed on the side of the packaging structure 22 away from the substrate 1, and the groove structure can be obtained by etching a certain depth in the middle of the surface of the packaging material using photolithography technology, that is, the packaging structure 22 obtained after etching is an integrated structure, and the corresponding position on the mounting frame 32 includes the second assembly portion 321 that cooperates with the first assembly portion 221, and the side of the mounting frame 32 used to mount the OLED screen body protrudes outward to form a boss structure (i.e., a protrusion), and the boss structure can be an integrated structure obtained by injection molding.

[0047] like Figure 8 As shown, the first assembly part 221 includes a plurality of grooves, and there is a certain interval between two adjacent grooves. The second assembly part 321 includes a plurality of protrusions, and there is a certain interval between two adjacent protrusions. When applying the adhesive, the adhesive can be applied discontinuously, that is, only applied to the bottom of each groove, or can be applied continuously, that is, a relatively small amount of adhesive is applied to the surface of the groove shoulder between two adjacent grooves. By using an assembly structure in which a plurality of protrusions arranged at intervals cooperate with the grooves to assemble the light-emitting screen and the mounting frame 32, on the one hand, the stability of the connection between the two can be enhanced, and on the other hand, the amount of adhesive can be reduced, thereby reducing costs.

[0048] In the light-emitting device provided in the present application, the first assembly part 221 and the second assembly part 321 use mutually matching protrusions and grooves, and the protrusions and grooves can be engaged with each other to play a certain positioning role. The adhesive layer 42 is located between the inner bottom surface of the groove and the outer convex surface of the protrusion, and the inner bottom surface and the outer convex surface of the groove are fully in contact with and bonded to the adhesive layer 42, that is, the bonding area of ​​the two can reach 100%, and the two can be firmly bonded.

[0049] Preferably, the adhesive layer 42 is formed by curing a liquid adhesive.

[0050] Specifically, during assembly, the liquid adhesive is first applied to the bottom surface of the groove of the groove portion, and then the protrusion is inserted into the groove portion. The liquid adhesive will flow in the gap formed between the bottom surface of the groove of the groove portion and the outer convex surface of the protrusion, so that it can fully fill the gap. After the adhesive is cured, an adhesive layer 42 is formed, and the OLED screen body and the mounting frame 32 are firmly bonded. Since the liquid adhesive used for bonding is not instantaneous, it can flow after coating, and the mutual plug-in cooperation between the protrusion and the groove portion can play a certain limiting role. The adhesive is a common adhesive glue on the market, such as liquid adhesive glue of polyurethane, silicone, silicone, etc., which is cheaper than double-sided tape. The present application uses an adhesive instead of double-sided tape, which not only ensures the firm bonding of the OLED screen body and the mounting frame 32, but also saves assembly costs.

[0051] Preferably, Figure 4 and Figure 5 As shown, at least one flow-stopping groove 5 is formed on the inner wall of the groove portion.

[0052] Specifically, when applying the adhesive, it is difficult to ensure that the amount of adhesive applied is just right. Therefore, a stop groove 5 is provided on the inner wall of the groove portion. It should be noted that the position and number of the stop grooves 5 are not specifically limited. The stop grooves 5 may be provided on the inner wall of the groove portion, or may be provided at any position of the bottom of the groove portion, and the number may be one, two or more. In this embodiment, stop grooves 5 are provided on both sides of the bottom of the groove portion. When the amount of adhesive applied is too much, the excess adhesive will automatically flow into the stop grooves 5 to avoid overflow. Figure 4 In the embodiment, the first assembly portion 221 is a raised portion, the second assembly portion 321 is a groove portion, and the stop groove 5 is located on the mounting frame 32; Figure 5 In the embodiment, the first assembly portion 221 is a groove portion, the second assembly portion 321 is a convex portion, and the stop groove 5 is located on the packaging structure 22 .

[0053] Optionally, the groove depth of the groove portion is greater than or equal to the sum of the height of the protrusion and the thickness of the adhesive layer 42; preferably, the difference between the groove depth of the groove portion and the sum of the height of the protrusion and the thickness of the adhesive layer is in the range of 0-1.5 mm.

[0054] For details, please refer to Figure 6The depth of the groove is recorded as d, the height of the protrusion is recorded as h, and the thickness of the adhesive layer 42 is recorded as t. The three satisfy: d≥h+t. The difference between the groove depth d of the groove and the sum of the height h of the protrusion and the thickness of the adhesive layer is in the range of 0-1.5mm. For example, it can be 0, 0.5mm, 1.0mm, 1.5mm, etc. It is preferably set to d=h+t. In this way, after the OLED screen and the mounting frame 32 are assembled, the shoulder surface of the groove part is tightly fitted with the shoulder surface of the boss formed by the protrusion, thereby ensuring the stable assembly of the packaging structure 22 and the mounting frame 32, and avoiding the problems of shaking and positioning deviation.

[0055] Optionally, the groove depth of the groove portion is 0.3-0.5mm, for example, it can be 0.3mm, 0.35mm, 0.4mm, 0.45mm, 0.5mm, etc.; the height of the protrusion is 0.2-0.4mm, for example, it can be 0.2mm, 0.25mm, 0.3mm, 0.35mm, 0.4mm, etc.; the thickness of the adhesive layer 42 is 0.05-0.15mm, for example, it can be 0.05mm, 0.08mm, 0.1mm, 0.12mm, 0.15mm, etc.; in the case of Figure 2 In the light emitting device shown, the total thickness of the packaging structure 22 is 1.1 mm, the height of the protrusion is 0.3 mm, the depth of the groove is 0.4 mm, and the thickness of the adhesive layer 42 is 0.1 mm.

[0056] Optionally, the shape of the protrusion is one or more combinations of a cylinder, a cuboid or a cube; and the shape of the groove portion matches the shape of the protrusion.

[0057] Specifically, there is no specific limitation on the shape of the protrusion, the shape of the groove is consistent with the shape of the protrusion, the outer contour size of the protrusion is slightly smaller than the inner contour size of the groove, and the single-sided difference between the two is 0.1-0.4mm, for example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, etc.; when the two are plugged together, shaking can be avoided, positioning is accurate, and a stable assembly connection is achieved.

[0058] Furthermore, the distance between the edge of the first assembly portion 221 and the edge of the packaging structure 22 on the same side is 3-5 mm; the distance between the edge of the second assembly portion 321 and the edge of the mounting frame 32 on the same side is 3-5 mm.

[0059] Specifically, Figure 2Taking the light-emitting device shown as an example, the first assembly part 221 is a raised part, and the horizontal spacing between the left edge of the raised part and the left edge of the packaging structure 22 is in the range of 3-5mm, and the horizontal spacing between the right edge of the raised part and the right edge of the packaging structure 22 is in the range of 3-5mm. The specific value of the spacing can be, for example, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, etc. The second assembly part 321 is similar to the first assembly part 221 and will not be described in detail. In addition, in the case where the first assembly part 221 includes multiple raised parts, it refers to the spacing between the edge of the raised part at the edge and the edge of the same side of the packaging structure 22.

[0060] Optionally, the side wall of the protrusion and / or the inner side wall of the groove is provided with an elastic protrusion 23 ; the inner side wall of the groove and / or the side wall of the protrusion is provided with a slot 24 corresponding to the elastic protrusion 23 .

[0061] Specifically, the elastic protrusion 23 may be provided only on the side wall of the protrusion, or only on the inner side wall of the groove, or on both the side wall of the protrusion and the inner side wall of the groove. The elastic protrusion 23 may enhance the connection stability between the protrusion and the groove. Accordingly, slots 24 corresponding to the elastic protrusions 23 may be provided on the inner side wall of the groove and / or the side wall of the protrusion. The number of the slots 24 is consistent with the number of the elastic protrusions 23, and the positions of the two correspond one to one. When the elastic protrusion 23 is located on the side wall of the protrusion, the corresponding slot 24 is located on the inner side wall of the groove. When the elastic protrusion 23 is located on the inner side wall of the groove, the corresponding slot 24 is located on the side wall of the protrusion. When the protrusion and the groove are plugged and assembled, the elastic protrusion 23 may be inserted into the corresponding slot 24, thereby further enhancing the connection stability between the two.

[0062] like Fig. 9 As shown, in the light emitting device, the side wall of the raised portion included in the first assembly portion 221 is provided with an elastic protrusion 23, and the inner side wall of the groove portion included in the second assembly portion 321 is provided with a slot 24. Fig.10 As shown, in the light emitting device, a slot 24 is provided on the side wall of the raised portion included in the first assembly portion 221 , and an elastic protrusion 23 is provided on the inner side wall of the raised portion included in the second assembly portion 321 .

[0063] Furthermore, the packaging structure 22 of the light-emitting screen is made of glass, plastic or metal.

[0064] An embodiment of the present application also provides a car taillight, comprising the above-mentioned light-emitting device.

[0065] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A light emitting device, characterized in that: include: A light-emitting screen body, wherein the packaging structure of the light-emitting screen body comprises a first assembly part; A mounting frame, the mounting frame comprising a second assembly portion, the second assembly portion being capable of cooperating with the first assembly portion; The adhesive layer can be fully filled between the first assembly part and the second assembly part when the first assembly part and the second assembly part are matched, so that the two are firmly connected.

2. The light emitting device according to claim 1, characterized in that: The first fitting portion includes at least one protrusion and the second fitting portion includes grooves having the same number as the protrusion, or the first fitting portion includes at least one groove and the second fitting portion includes protrusions having the same number as the groove.

3. The light emitting device according to claim 2, characterized in that: The adhesive layer is formed by curing a liquid adhesive.

4. The light emitting device according to claim 3, characterized in that: At least one flow-stopping groove is formed on the inner wall of the groove portion.

5. The light emitting device according to claim 3, characterized in that: The groove depth of the groove portion is greater than or equal to the sum of the height of the protrusion portion and the thickness of the adhesive layer; preferably, the difference between the groove depth of the groove portion and the sum of the height of the protrusion portion and the thickness of the adhesive layer ranges from 0 to 1.5 mm.

6. The light emitting device according to claim 5, characterized in that: The groove depth of the groove portion is 0.3-0.5 mm; the height of the protrusion portion is 0.2-0.4 mm; and the thickness of the adhesive layer is 0.05-0.15 mm.

7. The light emitting device according to claim 2, characterized in that: The shape of the protrusion is one or more combinations of a cylinder, a cuboid or a cube; the shape of the groove portion matches the shape of the protrusion.

8. The light emitting device according to claim 2, characterized in that: The side wall of the protrusion and / or the inner side wall of the groove is provided with an elastic protrusion; the inner side wall of the groove and / or the side wall of the protrusion is provided with a slot corresponding to the elastic protrusion.

9. The light emitting device according to claim 1, characterized in that: The packaging structure of the light-emitting screen is made of glass, plastic or metal.

10. A car taillight, characterized in that: Comprising the light emitting device as described in any one of claims 1 to 9.

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