Display module, manufacturing method thereof and display device

Abstract

The embodiment of the invention provides a display module, a manufacturing method thereof and a display device, relates to the technical field of display, and is used for effectively preventing glue from flowing to a display area. The display module comprises a display panel, the display panel comprises a display area and a first non-display area located on the periphery of the display area and further comprises a substrate and a first film layer located on one side of the substrate, the first film layer comprises an auxiliary sub-part, the auxiliary sub-part is located in the first non-display area, and the auxiliary sub-part comprises a groove or a protrusion.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display module and a manufacturing method thereof, and a display device. Background Art

[0002] The lower step of the display panel is usually provided with a protective glue layer. However, during the glue coating process, the glue will flow and there is a risk of flowing to the display area. When the glue flows to the display area, it will affect the optical display of the display panel, thus causing adverse problems. Summary of the invention

[0003] The embodiments of the present invention provide a display module and a manufacturing method thereof, and a display device, which are used to effectively prevent glue from flowing to a display area.

[0004] In a first aspect, an embodiment of the present invention provides a display module, including: The display panel includes a display area and a first non-display area located around the display area, and also includes a substrate and a first film layer located on one side of the substrate, the first film layer includes an auxiliary sub-portion, the auxiliary sub-portion is located in the first non-display area, and the auxiliary sub-portion includes a groove or a protrusion.

[0005] In a second aspect, based on the same inventive concept, an embodiment of the present invention provides a method for manufacturing a display module, including forming a display panel; The display panel includes a display area and a first non-display area located around the display area, and also includes a substrate and a first film layer located on one side of the substrate, the first film layer includes an auxiliary sub-portion, the auxiliary sub-portion is located in the first non-display area, and the auxiliary sub-portion includes a groove or a protrusion.

[0006] In a third aspect, based on the same inventive concept, an embodiment of the present invention provides a display device, comprising the above-mentioned display module.

[0007] The technical solution provided by the embodiment of the present invention has the following beneficial effects: In an embodiment of the present invention, the auxiliary sub-unit is located at the periphery of the display area and includes a groove or a protrusion. When a material with a certain fluidity is applied around the display area, when the material flows to the auxiliary sub-unit, it will fill in the gap between the grooves or protrusions, thereby slowing down its fluidity. For example, when the display module includes a glue layer, and at least part of the glue layer is located in the first non-display area, when applying glue, the auxiliary sub-unit can block the glue from flowing toward the display area, preventing the glue from flowing to the display area and affecting the normal optical display. In other words, because the auxiliary sub-unit can be effectively used to prevent the glue from flowing to the display area, the coating thickness of the glue can be designed to be larger, so as to form a thicker glue layer and improve the protective performance of the glue layer.

[0008] The embodiments of the present invention can be applied in transparent display.

[0009] In a non-transparent display, the display module also includes a polarizer, which is located on one side of the display panel and at least in the display area. The non-transparent display uses a polarizer to block the flow of glue. After the glue flows to one side of the polarizer, it will be blocked by the polarizer and will not flow further to the display area.

[0010] However, in the field of transparent display, in order to improve the transmittance, polarizers are usually no longer provided. In the related art, in order to prevent the glue from flowing into the display area, the distance between the glue coating area and the display area can only be increased. For example, the width of the non-display area between the glue coating area and the display area is increased to reserve enough leveling space for the glue, but this will increase the width of the frame, which is not conducive to the realization of a narrow frame design. If you want to optimize the frame, you can only compress the width of the glue coating area, but this will cause the protective performance of the glue layer to decrease.

[0011] After adopting the technical solution provided in the embodiment of the present invention, even without a polarizer, the auxiliary sub-part can be used to effectively prevent the glue from flowing to the display area. Therefore, there is no need to increase the distance between the glue coating area and the display area, thereby achieving the purpose of narrowing the frame and improving the protective performance of the glue layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 A schematic diagram of the structure of a display module provided by an embodiment of the present invention; Figure 2 Another structural schematic diagram of a display module provided by an embodiment of the present invention; Figure 3 A schematic diagram of another structure of a display module provided by an embodiment of the present invention; Figure 4 A schematic diagram of another structure of a display module provided by an embodiment of the present invention; Figure 5 A schematic diagram of another structure of a display module provided by an embodiment of the present invention; Figure 6 A schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention; Figure 7 Another schematic cross-sectional structure diagram of a display panel provided by an embodiment of the present invention Figure 8 A top view of a display panel provided by an embodiment of the present invention; Fig. 9 for Figure 8 A cross-sectional view along the A1-A2 direction; Fig.10 A top view of a display panel provided by an embodiment of the present invention; Fig.11 for Fig.10 A cross-sectional view along the B1-B2 direction; Fig.12 for Figure 8 Another cross-sectional view along the A1-A2 direction; Fig.13 for Fig.10 Another cross-sectional view along the B1-B2 direction; Fig.14 Another top view of the display panel provided by the embodiment of the present invention; Fig.15 A schematic diagram of another cross-sectional structure of a display panel provided by an embodiment of the present invention; Fig.16 Another top view of the display panel provided by the embodiment of the present invention; Fig.17 A schematic diagram of another cross-sectional structure of a display panel provided by an embodiment of the present invention; Fig.18 Another top view of the display panel provided by the embodiment of the present invention; Fig.19 A schematic diagram of another cross-sectional structure of a display panel provided by an embodiment of the present invention; Fig. 20 A schematic diagram of another cross-sectional structure of a display panel provided by an embodiment of the present invention; Fig.21 Another top view of the display panel provided by the embodiment of the present invention; Fig. 22 Another top view of the display panel provided by the embodiment of the present invention; Fig.23 Another top view of the display panel provided by the embodiment of the present invention; Fig.24 Another top view of the display panel provided by the embodiment of the present invention; Fig.25 A process flow chart of a display module provided by an embodiment of the present invention; Fig.26 Another top view of the display panel provided by the embodiment of the present invention; Fig. 27Another top view of the display panel provided by the embodiment of the present invention; Fig.28 A schematic diagram of the structure of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0014] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0015] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0017] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0018] An embodiment of the present invention provides a display module, such as Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of a display module provided by an embodiment of the present invention, Figure 2 Another structural schematic diagram of a display module provided in an embodiment of the present invention, the display module comprises a display panel 1, and the display panel 1 can be of various types such as a light emitting diode (LED) display panel and an organic light emitting diode (OLED) display panel.

[0019] The display panel 1 includes a display area 2 and a first non-display area 3 located around the display area 2. The display panel 1 also includes a substrate 4 and a first film layer 5 located on one side of the substrate 4, the first film layer 5 includes an auxiliary sub-portion 6, the auxiliary sub-portion 6 is located in the first non-display area 3, and the auxiliary sub-portion 6 includes a groove or a protrusion.

[0020] In an embodiment of the present invention, the auxiliary sub-portion 6 is located around the display area 2 and includes grooves or protrusions. When a material with a certain fluidity is applied around the display area 2, when the material flows to the auxiliary sub-portion 6, it will fill in the groove or fill in the gap between the protrusions, thereby slowing down its fluidity. For example, when a glue layer 7 is required above the display panel 1, after applying the glue, the auxiliary sub-portion 6 can block the glue from flowing toward the display area 2, preventing the glue from flowing to the display area 2 and affecting the normal optical display. In other words, because the auxiliary sub-portion 6 can be effectively used to prevent the glue from flowing to the display area 2, the coating thickness of the glue can be designed to be larger, so as to form a thicker glue layer 7 and improve the protective performance of the glue layer 7.

[0021] The embodiments of the present invention can be applied in transparent display.

[0022] In the non-transparent display, the display module also includes a polarizer, which is located on one side of the display panel 1 and at least in the display area 2. The non-transparent display uses the polarizer to block the flow of glue. After the glue flows to one side of the polarizer, it will be blocked by the polarizer and will not flow further to the display area 2. For example, the thickness of the existing polarizer is 100μm~150μm. When a 100μm glue layer 7 is formed, the polarizer can block the glue and prevent the glue from flowing over the polarizer to the display area 2.

[0023] However, in the field of transparent display, in order to improve the transmittance, a polarizer is usually not provided. In the related art, in order to prevent the glue from flowing to the display area 2, the distance between the glue coating area and the display area 2 is usually increased. For example, the width of the non-display area between the glue coating area and the display area 2 is increased to reserve enough leveling space for the glue, but this will increase the width of the frame, which is not conducive to the realization of a narrow frame design. If you want to optimize the frame, you can only compress the width of the glue coating area, but this will cause the protective performance of the glue layer 7 to decrease.

[0024] After adopting the technical solution provided in the embodiment of the present invention, even without a polarizer, the auxiliary sub-portion 6 can be used to effectively prevent the glue from flowing to the display area 2, so there is no need to increase the distance between the glue coating area and the display area 2, thereby achieving the purpose of narrowing the frame and improving the protective performance of the glue layer 7.

[0025] In one possible implementation, see again Figure 1 and Figure 2 The display module further includes a glue layer 7 , which is located on a side of the substrate 4 facing the first film layer 5 and at least located in the first non-display area 3 .

[0026] The glue layer 7 may include an ultraviolet light curing glue material, which is used to protect the circuit from being damaged by dust, moisture, oxygen, etc. During its formation, a layer of glue is first applied, and then cured to form the glue layer 7. As mentioned above, after the glue is applied, when the glue flows to the auxiliary sub-part 6, it fills the gaps between the grooves or protrusions, thereby slowing down its fluidity and preventing it from further flowing to the display area 2.

[0027] In a possible implementation, Figure 3 As shown, Figure 3 This is another structural diagram of the display module provided by an embodiment of the present invention, in which at least part of the glue layer 7 overlaps with the auxiliary sub-part 6. That is, part of the glue is filled in the groove of the auxiliary sub-part 6 or in the gap between the protrusions of the auxiliary sub-part 6 during the flow process, and the fluidity of the glue will be slowed down.

[0028] In addition, when a groove is formed in the first film layer 5, if the groove passes through the first film layer 5, some metal wiring under the first film layer 5 may be exposed. The glue filled in the groove can encapsulate the part of the metal wiring exposed by the groove to prevent it from being exposed and corroded by water and oxygen.

[0029] In one possible implementation, see Figure 1 and Figure 2 The display panel 1 further includes a bending area 8, and at least part of the adhesive layer 7 is located in the bending area 8. In this structure, the adhesive layer 7 will serve as a bending protection layer. In the process of manufacturing the display module, when the bending area 8 is bent, the adhesive layer 7 can disperse and absorb the stress generated during the bending, thereby avoiding stress concentration and causing wiring breakage.

[0030] The auxiliary sub-portion 6 is located between the display area 2 and the bending area 8. On the one hand, the auxiliary sub-portion 6 can effectively prevent the glue in the bending area 8 from flowing to the display area 2, and on the other hand, the groove or protrusion of the auxiliary sub-portion 6 will not have much effect on the overall thickness of the glue layer 7 in the bending area 8, and the thickness of the glue layer 7 in the bending area 8 is more uniform, which can better balance the stress when bending.

[0031] In the embodiments of the present invention, see Figure 1 , the first non-display area 3 may be the part of the non-display area between the display area 2 and the bending area 8. In this case, the first non-display area 3 may be understood as the lower frame of the display panel 1, and the auxiliary sub-portion 6 is located in the first non-display area 3, that is, between the display area 2 and the bending area 8. Alternatively, the first non-display area 3 may also include the bending area 8. In this case, the first non-display area 3 may be understood as the lower step area, and the auxiliary sub-portion 6 is located in the part of the first non-display area 3 between the display area 2 and the bending area 8.

[0032] In other optional embodiments, at least part of the auxiliary sub-portion 6 may also be located in the bending area 8, thereby compressing the width of the space occupied by the auxiliary sub-portion 6 between the bending area 8 and the display area 2, which helps to achieve an ultra-narrow border or borderless design.

[0033] In a possible implementation, Figure 4 and Figure 5 As shown, Figure 4 This is another structural schematic diagram of a display module provided by an embodiment of the present invention. Figure 5 This is another structural diagram of a display module provided by an embodiment of the present invention, wherein the display panel 1 further includes a binding area 9, which is located on the back side of the display panel 1. More specifically, the bending area 8 is located between the display area 2 and the binding area 9, and when the bending area 8 is bent, the binding area 9 is driven to be placed on the back side of the display panel 1.

[0034] The display module further includes a circuit board 10, which is bound and connected to the display panel 1 in the binding area 9. More specifically, the binding area 9 includes a pad 11, which is electrically connected to various signal lines in the display panel 1, and the circuit board 10 is electrically connected to the pad 11.

[0035] The glue layer 7 also covers at least the portion of the circuit board 10 located in the binding area 9. That is, in the process of the display module, the circuit board 10 is firstly bound, and then glue is applied to form the glue layer 7, so that the glue layer 7 covers the binding portion of the circuit board 10.

[0036] The adhesive layer 7 encapsulates and protects the binding part of the circuit board 10. On the one hand, after the glue is cured, the various components of the binding part of the circuit board 10, such as chips, pins, etc., can be firmly fixed in the corresponding positions to prevent them from loosening or displacement due to external mechanical effects, thereby ensuring a stable electrical connection between the circuit board 10 and the display panel 1. On the other hand, when impacted by external force, the adhesive layer 7 can also absorb part of the impact force to reduce the direct damage to the binding part of the circuit board 10 caused by external force. On the other hand, after curing, the adhesive layer 7 will have good sealing properties, which can effectively block the entry of external moisture and dust, and prevent the binding part of the circuit board 10 from having connection abnormalities and other adverse problems.

[0037] In addition, after adopting the technical solution provided in the embodiment of the present invention, the auxiliary sub-portion 6 in the first film layer 5 can be used to slow down the flow of the glue. Therefore, under the condition of ensuring that the glue does not flow to the display area 2, the glue layer 7 can be set thicker to a certain extent, thereby providing stronger packaging protection for the wiring of the binding area 9.

[0038] In a possible implementation, Figure 6 As shown, Figure 6A schematic diagram of a cross-sectional structure of a display panel 1 provided in an embodiment of the present invention, wherein the display panel 1 includes an array layer 12, the array layer 12 includes a metal layer 13, a portion of the metal layer 13 includes a planarization layer 14 on a side close to and / or away from a substrate 4, and the first film layer 5 includes at least one planarization layer 14.

[0039] Exemplarily, the display panel 1 includes a first metal layer 13-1, a second metal layer 13-2 located on a side of the first metal layer 13-1 away from the substrate 4, and a third metal layer 13-3 located on a side of the second metal layer 13-2 away from the substrate 4. The planarization layer 14 includes a first planarization layer 15 and a second planarization layer 16, the first planarization layer 15 is located between the second metal layer 13-2 and the third metal layer 13-3, and the second planarization layer 16 is located on a side of the third metal layer 13-3 away from the substrate 4. The first film layer 5 may include the first planarization layer 15 and / or the second planarization layer 16.

[0040] and / or, if Figure 7 As shown, Figure 7 Another cross-sectional structural schematic diagram of the display panel 1 provided in an embodiment of the present invention, the display panel 1 includes a light-emitting device layer 17, the light-emitting device layer includes an anode 18, a light-emitting layer 19, a pixel definition layer 20 and a cathode 21, wherein the pixel definition layer 20 includes a first opening 22, the first opening 22 exposes the anode 18, and the light-emitting layer 19 is located in the first opening 22, and the first film layer 5 includes the pixel definition layer 20.

[0041] The above-mentioned planarization layer 14 and pixel definition layer 20 are both organic film layers. The original organic film layer in the display panel 1 is reused as the first film layer 5. First, there is no need to form other additional film layers as the first film layer 5. Second, the organic film layer is relatively thick. When a groove is formed inside it, the groove can have a greater depth and can be filled with a larger volume of glue, which has a greater slowing effect on the flow of the glue.

[0042] In a possible implementation, combining Figure 8~Figure 11 The first non-display area 3 includes a first area 23 and a second area 24 , and the first area 23 is located between the display area 2 and the second area 24 .

[0043] The auxiliary sub-portion 6 includes a plurality of first sub-portions 25, which may be grooves. The density of the first sub-portions 25 in the first region 23 and the second region 24 is different, and / or the volume of the first sub-portions 25 in the first region 23 and the second region 24 is different.

[0044] In a more specific structure, the auxiliary sub-section 6 includes at least two sub-section units 26 arranged along a first direction x, and the first direction x is parallel to the arrangement direction of the display area 2 and the first non-display area 3. The sub-section unit 26 includes a plurality of first sub-sections 25 arranged along a second direction y, and the second direction y intersects with the first direction x.

[0045] In the first region 23 and the second region 24, the spacings between adjacent first sub-sections 25 in the sub-section units 26 are different, that is, the densities of the first sub-sections 25 are different; and / or, in the first region 23 and the second region 24, the volumes of the first sub-sections 25 in the sub-section units 26 are different.

[0046] The greater the arrangement density and / or volume of the first sub-portions 25, the more glue will fill the first sub-portions 25 when it flows to the area where the first sub-portions 25 are located, and the greater the degree of slowing down of its fluidity. In the embodiment of the present invention, by differentially designing the arrangement density and / or volume of the first sub-portions 25 in different areas, the first sub-portions 25 at different positions can have different degrees of influence on the flow of glue, thereby achieving different purposes in a targeted manner, and details can be seen in the subsequent embodiments.

[0047] When performing a differentiated design of the first sub-section 25, in a feasible implementation manner, as Figure 8 and Fig. 9 As shown, Figure 8 A top view of a display panel 1 provided in an embodiment of the present invention, Fig. 9 for Figure 8 In a cross-sectional view along direction A1-A2, the density of the first subsection 25 in the second region 24 is smaller than the density of the first subsection 25 in the first region 23, and / or the volume of the first subsection 25 in the second region 24 is smaller than the volume of the first subsection 25 in the first region 23.

[0048] Exemplarily, the spacing between adjacent first sub-sections 25 in the sub-section unit 26 of the second region 24 is greater than the spacing between adjacent first sub-sections 25 in the sub-section unit 26 of the first region 23, and / or the volume of the first sub-section 25 in the sub-section unit 26 of the second region 24 is smaller than the volume of the first sub-section 25 in the sub-section unit 26 of the first region 23.

[0049] In this setting, the density of the first sub-section 25 in the area farther from the display area 2 is set to be sparser and / or the volume is set to be smaller, and the density of the first sub-section 25 in the area closer to the display area 2 is set to be denser and / or the volume is set to be larger.

[0050] This arrangement can first block the flow of glue to a small extent at a position far from the display area 2, and block it to a greater extent closer to the display area 2, so that the height of the glue can be smoothly reduced, that is, along the direction close to the display area 2, the distance between the upper surface of the glue layer 7 away from the substrate 4 and the substrate 4 decreases smoothly, for example, smoothly transitions from 100 μm to 0, and the structural characteristics of the glue layer 7 are better. In addition, at a position close to the display area 2, the first sub-portion 25 has a great blocking effect on the glue, and can still effectively prevent the glue from further flowing to the display area 2.

[0051] When performing a differentiated design of the first sub-section 25, in another feasible implementation, as Fig.10 and Fig.11 As shown, Fig.10 A top view of a display panel 1 provided in an embodiment of the present invention, Fig.11 for Fig.10 In a cross-sectional view along direction B1 - B2 , the density of the first subsection 25 in the second region 24 is greater than the density of the first subsection 25 in the first region 23 , and / or the volume of the first subsection 25 in the second region 24 is greater than the volume of the first subsection 25 in the first region 23 .

[0052] Exemplarily, the spacing between adjacent first sub-sections 25 in the sub-section unit 26 of the second region 24 is smaller than the spacing between adjacent first sub-sections 25 in the sub-section unit 26 of the first region 23, and / or the volume of the first sub-section 25 in the sub-section unit 26 of the second region 24 is larger than the volume of the first sub-section 25 in the sub-section unit 26 of the first region 23.

[0053] In this setting, the density of the first sub-section 25 in the area farther from the display area 2 is set to be denser and / or the volume is set to be larger, and the density of the first sub-section 25 in the area closer to the display area 2 is set to be sparser and / or the volume is set to be smaller.

[0054] This arrangement can fill the first sub-portion 25 to a greater extent when the glue just starts to flow toward the display area 2 , thereby slowing down its fluidity to a greater extent, thereby reducing the risk of the glue flowing to the display area 2 to a greater extent.

[0055] In one possible implementation, see Figure 8~Figure 11 The orthographic projection areas of the first sub-portion 25 in the first region 23 and the second region 24 in the plane direction where the display module is located are different, wherein the orthographic projection area of ​​the first sub-portion 25 can be defined by the orthographic projection of the edge of the first sub-portion 25 .

[0056] and / or, if Fig.12 and Fig.13 As shown, Fig.12 for Figure 8 Another cross-sectional view along the A1-A2 direction, Fig.13 for Fig.10 In another cross-sectional view along the B1-B2 direction, in the direction perpendicular to the plane where the display module is located, the heights of the first sub-portions 25 in the first area 23 and the second area 24 are different. For example, part of the first sub-portion 25 does not penetrate the first film layer 5 and has a smaller height, and part of the first sub-portion 25 penetrates the first film layer 5 and has a larger height. Fig.12 and Fig.13 In the figure, the height of the first sub-portion 25 is represented by k, wherein at least the values ​​of k corresponding to different first sub-portions 25 are different.

[0057] This design can achieve differentiated design of the volumes of different first sub-portions 25. The different volumes of the first sub-portions 25 have different degrees of blocking the flow of glue, thereby achieving the aforementioned purpose of smoothly decreasing the height of the glue layer 7, or achieving the purpose of further slowing down the fluidity of the glue when it just starts to flow toward the display area 2.

[0058] In one possible implementation, see Figure 8 and Fig.10 Along the direction from the first non-display area 3 to the display area 2, the density of the first sub-portion 25 gradually changes and / or the volume of the first sub-portion 25 gradually changes, so that the degree of blocking of the first sub-portion 25 to the flow of glue gradually changes, achieving a smoother transition.

[0059] More specifically, along the direction from the first non-display area 3 to the display area 2, the spacing between adjacent first sub-sections 25 in at least two sub-section units 26 decreases, and / or the volume of the first sub-section 25 in the sub-section unit 26 increases. Alternatively, along the direction from the first non-display area 3 to the display area 2, the spacing between adjacent first sub-sections 25 in at least two sub-section units 26 increases, and / or the volume of the first sub-section 25 in the sub-section unit 26 decreases.

[0060] Of course, in other optional embodiments of the present invention, to simplify the design, such as Fig.14 As shown, Fig.14 In another top view of the display panel 1 provided by the embodiment of the present invention, the first sub-portions 25 in the first area 23 and the second area 24 may have the same density and the same volume.

[0061] In one possible implementation, see Figure 8 and Fig.10 The auxiliary sub-section 6 includes at least two sub-section units 26 arranged along a first direction x, the first direction x is parallel to the arrangement direction of the display area 2 and the first non-display area 3, and the sub-section unit 26 includes a plurality of first sub-sections 25 arranged along a second direction y, and the second direction y intersects with the first direction x.

[0062] For two adjacent sub-section units 26 , along the first direction x, the first sub-section 25 in one sub-section unit 26 overlaps with the interval between the adjacent first sub-sections 25 in the other sub-section unit 26 .

[0063] Compared with the arrangement of multiple first sub-sections 25 in a matrix of rows and columns, under this setting, the glue flows through the gap between adjacent first sub-sections 25 in a sub-section unit 26, and when it flows further toward the display area 2, it will pass through the first sub-section 25 in the adjacent sub-section unit 26, and fill in the first sub-section 25, so that its flow speed is slowed down. This design can improve the effect of the first sub-section 25 in slowing down the flow of glue.

[0064] In a feasible implementation, in at least some of the sub-portion units 26, along the second direction y, the sum of the length of the first sub-portion 25 and the distance between adjacent first sub-portions 25 is greater than or equal to 10 μm and less than or equal to 30 μm. Figure 8 The sum of the length of the first sub-section 25 and the distance between adjacent first sub-sections 25 is represented by w, and the w corresponding to different sub-section units 26 can be the same or different.

[0065] The minimum value of the above distance is designed to be 10 μm, which can prevent the first sub-sections 25 from being arranged too densely, resulting in too many exposed metal traces in the first sub-sections 25, and increasing the risk of metal traces being corroded by water and oxygen. The maximum value of the above distance is designed to be 30 μm, which can prevent the first sub-sections 25 from being arranged too sparsely, ensuring that the first sub-sections 25 can have a sufficient slowing effect on the flow of glue.

[0066] In one possible implementation, see Figure 15~Figure 18 The display panel 1 includes a pixel 27. The auxiliary sub-section 6 includes a plurality of first sub-sections 25. In a direction perpendicular to the plane where the display module is located, the projection shape of the first sub-section 25 is the same as the shape of the pixel 27.

[0067] In the embodiment of the present invention, the pixel 27 can be understood as a light-emitting device.

[0068] For example, Fig.15 and Fig.16 As shown, Fig.15 FIG. 1 is another schematic cross-sectional structure diagram of the display panel 1 provided in an embodiment of the present invention. Fig.16This is another top view of the display panel 1 provided by an embodiment of the present invention. In the LED display panel 1, the display panel 1 includes an array layer 12 and an LED device 28 located on one side of the array layer 12, and the pixel 27 refers to the LED device 28. The projection shape of the first sub-portion 25 is the same as the shape of the pixel 27, which can be understood as the projection shape of the first sub-portion 25 is the same as the shape of the LED device 28. In this structure, the shape of the projection of the LED device 28 and the first sub-portion 25 can be a square or the like.

[0069] like Fig.17 and Fig.18 As shown, Fig.17 This is another schematic cross-sectional structure diagram of the display panel 1 provided in an embodiment of the present invention. Fig.18 Another top view of the display panel 1 provided by the embodiment of the present invention, in the OLED display panel 1, the display panel 1 includes an array layer 12 and a light-emitting device layer located on one side of the array layer 12, the light-emitting device layer includes an OLED device 29, the OLED device 29 includes an anode 18, a light-emitting layer 19 and a cathode 21, the pixel 27 refers to the OLED device 29, and the shape of the OLED device 29 is specifically defined by the first opening 22 of the pixel definition layer 20. The projection shape of the first sub-portion 25 is the same as the shape of the pixel 27, which can be understood as the projection shape of the first sub-portion 25 is the same as the shape of the first opening 22 of the pixel definition layer 20. In this structure, the shape of the projection of the OLED device 29 and the first sub-portion 25 can be square, diamond, circular, elliptical, etc.

[0070] Designing the shape of the first sub-portion 25 to be the same as the shape of the pixel 27 can homogenize the panel structure, weaken the difference in film layer structure between the first sub-portion 25 and other positions, and reduce the visibility of the first sub-portion 25 .

[0071] In one possible implementation, see Fig.19 and Fig. 20 The display panel 1 includes a light shielding layer 30 , and the light shielding layer 30 includes a second opening 31 .

[0072] The auxiliary sub-portion 6 includes a plurality of first sub-portions 25 . In a direction perpendicular to the plane where the display module is located, the shape of the projection of the first sub-portion 25 is the same as the shape of the second opening 31 .

[0073] For example, Fig.19 As shown, Fig.19This is another cross-sectional structural diagram of the display panel 1 provided in an embodiment of the present invention. In the LED display panel 1, the display panel 1 includes an array layer 12 located on one side of the substrate 4 and an LED device 28 located on one side of the array layer 12. The light shielding layer 30 is located on a side of the LED device 28 away from the substrate 4, and the shape of the second opening 31 of the light shielding layer 30 is the same as the shape of the LED device 28.

[0074] like Fig. 20 As shown, Fig. 20 This is another schematic diagram of the cross-sectional structure of the display panel 1 provided in an embodiment of the present invention. In the OLED display panel 1, the display panel 1 includes an array layer 12 and a light-emitting device layer located on one side of the array layer 12. The light-emitting device layer includes an OLED device 29 and a shading layer 30. The OLED device 29 includes an anode 18, a light-emitting layer 19 and a cathode 21. The shading layer 30 includes a second opening 31. The second opening 31 exposes at least a portion of the anode 18. The light-emitting layer 19 is located in the second opening 31.

[0075] The shape of the first sub-portion 25 is the same as the opening shape of the light shielding layer 30 , which can also homogenize the panel structure, weaken the film layer structure difference between the first sub-portion 25 and other positions, and reduce the visibility of the first sub-portion 25 .

[0076] In other optional embodiments of the present invention, the first sub-section 25 may also be in other shapes, such as a pentagon, hexagon, octagon or other polygon. Fig.21 As shown, Fig.21 This is another top view of the display panel 1 provided by the embodiment of the present invention. In the direction perpendicular to the plane where the display module is located, the projection of the first sub-portion 25 is in a hexagonal shape.

[0077] In a possible implementation, Fig. 22 As shown, Fig. 22 This is another top view of the display panel 1 provided by an embodiment of the present invention, in which the auxiliary sub-portion 6 includes a strip-shaped second sub-portion 32, and the extension direction of the second sub-portion 32 intersects with the arrangement direction of the display area 2 and the first non-display area 3. Specifically, the display area 2 and the first non-display area 3 are arranged along the first direction x, and the second sub-portion 32 extends along the second direction y.

[0078] The second sub-portion 32 is a strip-shaped structure. When the glue flows to the second sub-portion 32, it will be filled to a greater extent in the second sub-portion 32, and its fluidity will be slower, thereby preventing the glue from flowing to the display area 2 to a greater extent. This design is more suitable for structures with thicker glue layers 7. A thicker glue layer 7 means that the thicker the glue is applied, the greater the flow of the glue, and the flow of the glue can be effectively slowed down by adjusting the second sub-portion 32.

[0079] In a possible implementation, Fig.23 As shown, Fig.23 This is another top view of the display panel 1 provided in an embodiment of the present invention. The auxiliary sub-portion 6 includes a plurality of first sub-portions 25 arranged in an array and a strip-shaped second sub-portion 32. The extension direction of the second sub-portion 32 intersects with the arrangement direction of the display area 2 and the first non-display area 3. The second sub-portion 32 is located between at least partially adjacent first sub-portions 25.

[0080] Specifically, the plurality of first sub-sections 25 may be arranged in a triangular array or in a row and column array. Exemplarily, the auxiliary sub-section 6 includes at least two sub-section units 26 arranged along a first direction x, and the first direction x is parallel to the arrangement direction of the display area 2 and the first non-display area 3. The sub-section unit 26 includes a plurality of first sub-sections 25 arranged along a second direction y. The second sub-section 32 is located between at least part of adjacent sub-section units 26, and the second sub-section 32 extends along the second direction y.

[0081] The first sub-portion 25 and the second sub-portion 32 are designed in combination, the first sub-portion 25 is filled with a slightly smaller degree of glue, and the second sub-portion 32 is filled with a slightly larger degree of glue. The first sub-portion 25 and the second sub-portion 32 are arranged in combination so that the second sub-portion 32 is spaced between at least partially adjacent first sub-portions 25, which can produce a sufficient and gradually slowing effect on the flow of the glue, so that the thickness of the glue can be smoothly reduced toward the display area 2.

[0082] In a possible implementation, Fig.24 As shown, Fig.24 Another top view of the display panel 1 provided by an embodiment of the present invention, the first non-display area 3 includes two opposite first edges 33, the arrangement direction of the two first edges 33 intersects with the arrangement direction of the display area 2 and the first non-display area 3, the first edge 33 is an arc edge, which can also be understood as an edge with an R angle. The first edge 33 exposes the end of the second sub-portion 32.

[0083] In the process of display module, Fig.25 As shown, Fig.25 A process flow chart of a display module provided by an embodiment of the present invention, firstly, a motherboard 34 is formed, the motherboard 34 includes a plurality of panels 35 to be cut, each panel 35 to be cut includes a display panel 1. There is a blank area between the edge of the panel 35 to be cut and the first edge 33 of the display panel 1, and the end of the second sub-portion 32 in the display panel 1 extends into the blank area.

[0084] After cutting the motherboard 34, a plurality of independent panels 35 to be cut are formed, and then the circuit board 10 is bound, and then glue is applied on the panels 35 to be cut to form a glue layer 7. After applying the glue, when the glue flows to the second sub-section 32, it will fill the second sub-section 32, and then overflow to the blank areas on both sides along the extension direction of the second sub-section 32, and accumulate in the blank areas. After the glue is cured, the panel 35 to be cut is further cut along the edge of the display panel 1, and the glue accumulated in the blank areas will be cut off along with the blank areas, so as to prevent the accumulated glue from remaining in the display panel 1 and affecting the panel structure. This technical solution is more suitable for panel structures with thicker glue layers 7. When thicker glue is applied, it can prevent the glue from accumulating inside the panel during the flow process and affecting the panel structure.

[0085] In a feasible embodiment, in order to make the auxiliary sub-section 6 sufficiently slow down the flow of glue, see Figure 7 , along the direction perpendicular to the plane where the display module is located, the height of the groove or protrusion is d1, 1μm≤d1≤10μm. Specifically, the height of the first sub-portion 25 is greater than or equal to 1μm and less than or equal to 10μm, and the height of the second sub-portion 32 is greater than or equal to 1μm and less than or equal to 10μm. The values ​​of d1 corresponding to different grooves (or protrusions) can be the same or different.

[0086] And / or, in order to make the auxiliary sub-section 6 sufficiently slow down the flow of glue, see Figure 8 , along the arrangement direction of the display area 2 and the first non-display area 3, the length of the groove or protrusion is d2, 5μm≤d2≤30μm. Specifically, along the first direction x, the length of the first sub-portion 25 is greater than or equal to 5μm and less than or equal to 30μm, and the length of the second sub-portion 32 is greater than or equal to 5μm and less than or equal to 30μm. The values ​​of d2 corresponding to different grooves (or protrusions) may be the same or different.

[0087] And / or, in order to enable the auxiliary sub-portion 6 to sufficiently slow down the flow of the glue, along the arrangement direction of the display area 2 and the first non-display area 3, the length of the auxiliary sub-portion 6 is p, 30 μm≤p≤150 μm.

[0088] Among them, Fig.26 As shown, Fig.26Another top view of the display panel 1 provided in an embodiment of the present invention, the length of the auxiliary sub-portion 6 can be defined in the following manner: the first film layer 5 has a virtual first straight line I1 and a virtual second straight line I2, and both the virtual first straight line I1 and the virtual second straight line I2 extend along the second direction y. The virtual first straight line I1 is located on the side of the multiple grooves in the auxiliary sub-portion 6 close to the display area 2, and is tangent to the groove (or protrusion) closest to the display area 2, and the virtual second straight line I2 is located on the side of the multiple grooves in the auxiliary sub-portion 6 away from the display area 2, and is tangent to the groove (or protrusion) farthest from the display area 2. The length of the auxiliary sub-portion 6 in the first direction x can be defined by the distance between the first virtual straight line I1 and the second virtual straight line I2.

[0089] In a possible implementation, Fig. 27 As shown, Fig. 27 Another top view of the display panel 1 provided in an embodiment of the present invention, the display panel 1 further includes a pixel circuit 36 ​​and a light-emitting element 37, the light-emitting element 37 may be a microLED or other type of light-emitting device. The display area 2 includes a light-transmitting area 38 and a non-light-transmitting area 39, the pixel circuit 36 ​​and the light-emitting element 37 are located in the non-light-transmitting area 39.

[0090] That is, the display panel 1 provided in the embodiment of the present invention is applied to transparent display. As mentioned above, in the field of transparent display, in order to improve the transmittance, a polarizer is usually no longer provided, so the flow of glue cannot be blocked by the polarizer. However, after adopting the technical solution provided in the embodiment of the present invention, the grooves or protrusions in the first film layer 5 can effectively block the glue, so there is no need to increase the width of the lower frame or reduce the coating distance of the glue, which can optimize the narrow frame or frameless design of the display panel 1 and improve the protection performance of the glue layer 7.

[0091] Based on the same inventive concept, the embodiment of the present invention further provides a method for manufacturing a display module. Figure 1 and Figure 2 The manufacturing method includes forming a display panel 1. The display panel 1 includes a display area 2 and a first non-display area 3 located around the display area 2, and also includes a substrate 4 and a first film layer 5 located on one side of the substrate 4, the first film layer 5 includes an auxiliary sub-portion 6, the auxiliary sub-portion 6 is located in the first non-display area 3, and the auxiliary sub-portion 6 includes a groove or a protrusion.

[0092] Combined with the above analysis, the display module formed by the manufacturing method has an auxiliary sub-section 6 located around the display area 2 and including grooves or protrusions. When a material with a certain fluidity is applied around the display area 2, when the material flows to the auxiliary sub-section 6, it will fill in the gaps between the grooves or protrusions, thereby slowing down its fluidity. For example, when the display module includes a glue layer 7, and at least part of the glue layer 7 is located in the first non-display area 3, when applying glue, the auxiliary sub-section 6 can block the glue from flowing toward the display area 2, preventing the glue from flowing to the display area 2 and affecting the normal optical display. In other words, because the auxiliary sub-section 6 can be effectively used to prevent the glue from flowing to the display area 2, the coating thickness of the glue can be designed to be larger, so as to form a thicker glue layer 7 and improve the protective performance of the glue layer 7.

[0093] In one possible implementation, see Figure 1 and Figure 2 The display module further includes a glue layer 7 , which is located on a side of the substrate 4 facing the first film layer 5 and at least located in the first non-display area 3 .

[0094] See also Fig.24 The first non-display area 3 of the display panel 1 includes two opposite first edges 33 , the arrangement direction of the two first edges 33 intersects with the arrangement direction of the display area 2 and the first non-display area 3 , and the first edges 33 are arc-shaped edges.

[0095] The auxiliary sub-portion 6 includes a strip-shaped second sub-portion 32 . The extension direction of the second sub-portion 32 intersects with the arrangement direction of the display area 2 and the first non-display area 3 . The first edge 33 exposes the end of the second sub-portion 32 .

[0096] Combination Fig.25 The process of forming the display panel 1 and the adhesive layer 7 includes: forming a motherboard 34, the motherboard 34 includes a plurality of panels to be cut 35, the panels to be cut 35 include the display panel 1, a blank area is included between the first edge 33 of the display panel 1 and the edge of the panel to be cut 35, and the end of the second sub-portion 32 is located in the blank area; cutting the motherboard 34 to form a plurality of independent panels to be cut 35; forming the adhesive layer 7 on one side of the panel to be cut 35; and cutting the panel to be cut 35 at least along the first edge 33 to form the display panel 1.

[0097] In the above process, after the glue is applied, when the glue flows to the second sub-section 32, it will fill the second sub-section 32, and then extend the extension direction of the second sub-section 32 to overflow to the blank areas on both sides, and accumulate in the blank areas. After the glue is cured, the panel 35 to be cut is further cut along the edge of the display panel 1, and the glue accumulated in the blank area will be cut off along with the blank area, preventing the accumulated glue from remaining in the display panel 1 and affecting the panel structure. This technical solution is more suitable for panel structures with thicker glue layers 7. When thicker glue is applied, it can prevent the glue from accumulating inside the panel during the flow process and affecting the panel structure.

[0098] Based on the same inventive concept, an embodiment of the present invention further provides a display device, such as Fig.28 As shown, Fig.28 1 is a schematic diagram of a structure of a display device provided by an embodiment of the present invention, and the display device includes the above-mentioned display module 100. Of course, Fig.28 The display device shown is for illustration only, and the display device may be any electronic device with a display function, such as a vehicle display screen, a mobile phone, a tablet computer, a laptop computer, an e-reader or a television, for example, any transparent electronic device with a display function.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display module, characterized in that: include: The display panel includes a display area and a first non-display area located around the display area, and also includes a substrate and a first film layer located on one side of the substrate, the first film layer includes an auxiliary sub-portion, the auxiliary sub-portion is located in the first non-display area, and the auxiliary sub-portion includes a groove or a protrusion.

2. The display module according to claim 1, characterized in that: The display module further includes a glue layer, which is located on a side of the substrate facing the first film layer and at least located in the first non-display area.

3. The display module according to claim 2, characterized in that: At least a portion of the adhesive layer overlaps with the auxiliary sub-portion.

4. The display module according to claim 2, characterized in that: The display panel further includes a bending area, at least a portion of the glue layer is located in the bending area, and the auxiliary sub-portion is located between the display area and the bending area.

5. The display module according to claim 2, characterized in that: The display panel further comprises a binding area, and the binding area is located at the back side of the display panel; The display module further includes a circuit board, which is bound and connected to the display panel in the binding area, and the adhesive layer at least covers a portion of the circuit board located in the binding area.

6. The display module according to claim 1, characterized in that: The display panel includes an array layer, the array layer includes a plurality of metal layers, some of the metal layers include a planarization layer on a side close to and / or away from the substrate, and the first film layer includes at least one of the planarization layers; And / or, the display panel includes a light-emitting device layer, the light-emitting device layer includes an anode, a light-emitting layer, a pixel definition layer and a cathode, wherein the pixel definition layer includes a first opening, the first opening exposes the anode, and the light-emitting layer is located in the first opening, and the first film layer includes the pixel definition layer.

7. The display module according to claim 1, characterized in that: The first non-display area includes a first region and a second region, and the first region is located between the display area and the second region; The auxiliary subsection includes a plurality of first subsections, the density of the first subsections in the first region and the second region are different, and / or the volume of the first subsections in the first region and the second region are different.

8. The display module according to claim 7, characterized in that: The density of the first subsection in the second region is smaller than the density of the first subsection in the first region, and / or the volume of the first subsection in the second region is smaller than the volume of the first subsection in the first region.

9. The display module according to claim 7, characterized in that: The density of the first subsection in the second region is greater than the density of the first subsection in the first region, and / or the volume of the first subsection in the second region is greater than the volume of the first subsection in the first region.

10. The display module according to claim 7, characterized in that: The orthographic projection areas of the first sub-portion in the first area and the first sub-portion in the second area in the direction of the plane where the display module is located are different; And / or, in a direction perpendicular to the plane where the display module is located, heights of the first sub-portions in the first area and the second area are different.

11. The display module according to claim 7, characterized in that: Along the direction from the first non-display area to the display area, the density of the first sub-portion changes gradually and / or the volume of the first sub-portion changes gradually.

12. The display module according to claim 1, characterized in that: The auxiliary sub-section includes at least two sub-section units arranged along a first direction, the first direction is parallel to the arrangement direction of the display area and the first non-display area, and the sub-section unit includes a plurality of first sub-sections arranged along a second direction, the second direction intersecting the first direction; For two adjacent sub-section units, along the first direction, the first sub-section in one sub-section unit overlaps with an interval between adjacent first sub-sections in the other sub-section unit.

13. The display module according to claim 12, characterized in that: In at least some of the sub-portion units, along the second direction, a sum of a length of the first sub-portion and a distance between adjacent first sub-portions is greater than or equal to 10 μm and less than or equal to 30 μm.

14. The display module according to claim 1, characterized in that: The display panel includes pixels; The auxiliary sub-portion includes a plurality of first sub-portions, and in a direction perpendicular to the plane where the display module is located, the projection shape of the first sub-portion is the same as the shape of the pixel.

15. The display module according to claim 1, characterized in that: The display panel includes a light shielding layer, and the light shielding layer includes a second opening; The auxiliary sub-portion includes a plurality of first sub-portions, and in a direction perpendicular to the plane where the display module is located, the projection shape of the first sub-portion is the same as the shape of the second opening.

16. The display module according to claim 1, characterized in that: The auxiliary sub-portion includes a strip-shaped second sub-portion, and an extension direction of the second sub-portion intersects with an arrangement direction of the display area and the first non-display area.

17. The display module according to claim 1, characterized in that: The auxiliary sub-section includes a plurality of first sub-sections arranged in an array and a strip-shaped second sub-section, the extension direction of the second sub-section intersects with the arrangement direction of the display area and the first non-display area, and the second sub-section is located between at least partially adjacent first sub-sections.

18. The display module according to claim 16 or 17, characterized in that: The first non-display area includes two opposite first sides, the arrangement direction of the two first sides intersects with the arrangement direction of the display area and the first non-display area, the first side is an arc edge, and the first side exposes the end of the second sub-portion.

19. The display module according to claim 1, characterized in that: Along the direction perpendicular to the plane where the display module is located, the height of the groove or protrusion is d1, 1μm≤d1≤10μm; and / or, along the arrangement direction of the display area and the first non-display area, the length of the groove or protrusion is d2, 5 μm≤d2≤30 μm; And / or, along the arrangement direction of the display area and the first non-display area, the length of the auxiliary sub-portion is p, 30 μm≤p≤150 μm.

20. The display module according to claim 1, characterized in that: The display panel further includes a pixel circuit and a light-emitting element. The display area includes a light-transmitting area and a non-light-transmitting area. The pixel circuit and the light-emitting element are located in the non-light-transmitting area.

21. A method for manufacturing a display module, characterized in that: including forming a display panel; The display panel includes a display area and a first non-display area located around the display area, and also includes a substrate and a first film layer located on one side of the substrate, the first film layer includes an auxiliary sub-portion, the auxiliary sub-portion is located in the first non-display area, and the auxiliary sub-portion includes a groove or a protrusion.

22. The manufacturing method according to claim 21, characterized in that: The display module further includes a glue layer, which is located on a side of the substrate facing the first film layer and at least located in the first non-display area; The first non-display area of ​​the display panel includes two opposite first edges, the arrangement direction of the two first edges intersects with the arrangement direction of the display area and the first non-display area, and the first edges are arc-shaped edges; The auxiliary sub-portion includes a strip-shaped second sub-portion, the extension direction of the second sub-portion intersects with the arrangement direction of the display area and the first non-display area, and the first side exposes an end of the second sub-portion; The process of forming the display panel and the glue layer includes: forming a motherboard, the motherboard comprising a plurality of panels to be cut, the panels to be cut comprising the display panel, a blank area between the first side of the display panel and the edge of the panel to be cut, and an end of the second sub-portion being located in the blank area; Cutting the motherboard to form a plurality of independent panels to be cut; forming the adhesive layer on one side of the panel to be cut; The panel to be cut is cut at least along the first edge to form the display panel.

23. A display device, characterized in that: A display module comprising any one of claims 1 to 20.

Images