Display panel manufacturing method, display panel and display device

Abstract

The present application discloses a method for manufacturing a display panel, a display panel and a display device, and relates to the field of display technology, and comprises the following steps: forming a light-emitting device on a substrate corresponding to a display area; forming a blocking component at least partially containing a channel structure at a position corresponding to a non-display area at an edge of the substrate; directionally depositing a filter material on a side of the blocking component close to the display area to form a filter membrane that at least covers the entrance of the channel structure; inkjet-printing an organic encapsulation material containing a solvent and a solute in the blocking component above the light-emitting device; when the solvent in the organic encapsulation material passes through the filter membrane, it penetrates from the position of the channel structure of the blocking component to the outer side of the blocking component away from the display area to accelerate the curing of the organic encapsulation material to form an organic encapsulation layer; through the above design, the present application accelerates the curing of the organic encapsulation layer and improves the encapsulation speed.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a method for manufacturing a display panel, a display panel, and a display device. Background Art

[0002] OLED (Organic Light-Emitting Diode) refers to an organic semiconductor device that emits light through carrier injection and recombination when organic semiconductor materials and luminescent materials are driven by an electric field. OLED has the characteristic of self-luminescence. The basic structure of OLED is to make a layer of organic luminescent material several tens of nanometers thick on indium tin oxide (ITO) glass as a luminescent layer, and there is a metal electrode with a low work function above the luminescent layer. Because the organic materials of OLED are very sensitive to substances such as water vapor and oxygen, various methods must be used to effectively encapsulate OLED devices to avoid contact between the devices and water and oxygen, so as to reduce the aging rate of the devices and extend the service life of the devices.

[0003] The encapsulation layers prepared in the existing OLED encapsulation process include inorganic encapsulation layers and organic encapsulation layers. The encapsulation effect is achieved by stacking several layers. Generally, the inorganic layer is prepared by vacuum deposition, and the organic encapsulation layer is prepared by inkjet printing. Because there is a gap between the inkjet printing nozzles, the organic encapsulation layer after inkjet printing is generally made by static leveling to completely spread the organic layer material into the device to form a covering encapsulation.

[0004] The blocking component used to block the flow of the mixed ink is a single-ring blocking component or a combination of multiple-ring blocking components. When preparing the organic encapsulation layer, the encapsulation speed depends on the curing speed of the mixed ink after inkjet printing. Due to the setting of the blocking component, the time required for curing after the mixed ink is leveled will be longer. Summary of the invention

[0005] The purpose of the present application is to provide a method for manufacturing a display panel, a display panel, and a display device that accelerate the curing of an organic encapsulation layer and improve the overall encapsulation speed.

[0006] The present application discloses a method for manufacturing a display panel, comprising the steps of:

[0007] forming a light emitting device on the substrate corresponding to the display area;

[0008] Forming a blocking component at least partially including a channel structure at a position of the edge of the substrate corresponding to the non-display area;

[0009] Directly depositing a filter material on a side of the barrier component close to the display area to form a filter membrane that at least covers the inlet of the channel structure;

[0010] inkjet printing an organic encapsulation material containing a solvent and a solute within the barrier assembly above the first insulating layer;

[0011] When the solvent in the organic encapsulation material passes through the filter film, it penetrates from the channel structure of the barrier component to the outer side of the barrier component away from the display area to accelerate the solidification of the organic encapsulation material to form an organic encapsulation layer;

[0012] An inorganic encapsulation layer is formed on the organic encapsulation layer and the barrier component to cover the organic encapsulation layer and the barrier component, thereby obtaining a display panel with encapsulation completed.

[0013] Optionally, the step of, after the solvent in the organic encapsulation material passes through the filter membrane, penetrating from the position of the channel structure of the barrier component to the outer side of the barrier component away from the display area to accelerate the solidification of the organic encapsulation material to form an organic encapsulation layer, further includes the step of:

[0014] The solvent that penetrates into the outer side of the barrier component away from the display area is heated in a direction to accelerate the evaporation speed of the solvent.

[0015] Optionally, after forming a circle of blocking components containing a channel structure at a position of the edge of the substrate corresponding to the non-display area, the method comprises the following steps:

[0016] A circle of groove structure is dug on the substrate and located outside the blocking component away from the display area;

[0017] The step of directionally heating the solvent that has penetrated into the outer side of the barrier component away from the display area to accelerate the evaporation rate of the solvent comprises the steps of:

[0018] The solvent in the organic encapsulation material penetrates into the groove structure from the position of the channel structure of the blocking component;

[0019] Directional heating is performed on the solvent in the groove structure to accelerate the evaporation speed of the solvent.

[0020] The present application also discloses an OLED display panel, which is manufactured by the manufacturing method of the display panel as described above, wherein the display panel comprises a substrate, a light-emitting device, an insulating layer, an organic encapsulation layer, a blocking component and a filter film, wherein the light-emitting array is arranged on the substrate to form a display area, the insulating layer is arranged above the light-emitting device and covers the display area; the blocking component is arranged in a circle around the non-display area of ​​the substrate, and the filter film is arranged on a side of the blocking component close to the display area;

[0021] Wherein, the barrier component is at least partially provided with a channel structure, and the filter membrane at least covers the inlet of the channel structure.

[0022] Optionally, the blocking component includes a blocking column, the channel structure is arranged in the blocking column, the channel structure includes a plurality of sub-channels penetrating the blocking component, the plurality of sub-channels are arranged at intervals in the blocking component along the extension direction of the blocking component, and each of the sub-channels is arranged obliquely along the direction from the display area to the non-display area;

[0023] Here, the included angle between each sub-channel and the horizontal plane is assumed to be a, 30°≦a≦60°.

[0024] Optionally, the apertures of the plurality of sub-channels are equal.

[0025] Optionally, the blocking component includes a blocking column, the channel structure is arranged in the blocking column, the channel structure includes a first channel, a second channel, a third channel, a fourth channel and a fifth channel, the first channel, the second channel and the third channel are arranged in the blocking component on a side close to the filter membrane, and are arranged at intervals along the extension direction of the blocking component, and the first channel, the second channel and the third channel are arranged obliquely in a direction from the display area to the non-display area;

[0026] The fourth channel is vertically arranged in the blocking column and is located on a side of the first channel, the second channel and the third channel away from the display area, and the fourth channel is respectively connected with the first channel, the second channel and the third channel. The fifth channel is arranged in the blocking component at one end close to the substrate and passes through the blocking component, and the fourth channel is connected with the fifth channel.

[0027] Optionally, the aperture of the fourth channel and the aperture of the fifth channel are both larger than the apertures of the first channel, the second channel and the third channel.

[0028] Optionally, the blocking assembly further includes a blocking portion, and the blocking portion is arranged on a side of the blocking column away from the substrate; and a cross-section of the blocking assembly is T-shaped.

[0029] The present application also discloses a display device, comprising the display panel as described above.

[0030] Compared with the prior art display panel packaging, in which the blocking component used to block the flow of ink only adopts a single circle of blocking components or a combination of multiple circles of blocking components, the manufacturing method of the display panel of the present application includes forming a blocking component containing at least part of the channel structure at the position of the edge of the substrate corresponding to the non-display area, directionally depositing a filter material on the side of the blocking component close to the display area to form a filter membrane that at least covers the entrance of the channel structure, and inkjet printing an organic packaging material containing a solvent and a solute in the blocking component above the light-emitting device; in this way, the organic packaging material is inkjet printed, and the mixed ink of the solvent and the solute flows toward the edge of the display area. When encountering the filter membrane, the solvent first passes through the filter membrane under the action of liquid pressure, and then flows out of the blocking component with the channel structure and penetrates to the outside of the blocking component away from the display area. At this time, part of the solvent in the mixed ink has been filtered through the filter membrane and the blocking component. At this time, the curing speed of the organic packaging material can be greatly improved, and it also enables the subsequent formation of an inorganic packaging layer above the organic packaging layer and the blocking component to cover the organic packaging layer and the blocking component, and the speed of completing the overall packaging is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. 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. In the drawings:

[0032] Figure 1 It is a schematic diagram of the steps of the method for manufacturing a display panel provided in the present application;

[0033] Figure 2 yes Figure 1 A schematic flow chart of further steps after step S5;

[0034] Figure 3 yes Figure 1 A schematic flow chart of further steps after step S3;

[0035] Figure 4 yes Figure 2 Schematic diagram of the further steps after step S7;

[0036] Figure 5 is a schematic block diagram of a display device provided in the first embodiment of the present application;

[0037] Figure 6 is a schematic cross-sectional structural diagram of a display panel provided in the first embodiment of the present application;

[0038] Figure 7 is a schematic cross-sectional structural diagram of a barrier assembly provided in the first embodiment of the present application;

[0039] Figure 8 It is a schematic diagram of the steps of the manufacturing method of the blocking component provided in the first embodiment of the present application;

[0040] Fig. 9 is a schematic diagram of a barrier assembly filtering an inkjet-printed organic encapsulation material provided in the first embodiment of the present application;

[0041] Fig.10 A schematic cross-sectional view of a blocking assembly provided in a second embodiment of the present application;

[0042] Fig.11 It is a schematic diagram of a barrier component provided in the second embodiment of the present application filtering an inkjet-printed organic encapsulation material.

[0043] Among them, 100, display panel; 110, substrate; 120, light-emitting device; 130, first insulating layer; 140, organic encapsulation layer; 150, blocking component; 151, blocking column; 152, blocking portion; 153, protrusion; 154, first side; 155, second side; 156, third side; 157, fourth side; 160, channel structure; 161, sub-channel; 162, first channel; 163, second channel; 164, third channel; 165, fourth channel; 166, fifth channel; 170, inorganic encapsulation layer; 180, display area; 190, non-display area; 200, groove structure; 300, filter membrane. DETAILED DESCRIPTION

[0044] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0045] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "multiple" means two or more. In addition, the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. indicating orientation or positional relationships are described based on the orientation or relative positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present application, rather than indicating that the device or element referred to must contain a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] Figure 1 is a schematic diagram of the steps of a method for manufacturing a display panel provided in the present application, such as Figure 1 As shown, the present application discloses a method for manufacturing a display panel, comprising the steps of:

[0047] S1: forming a light-emitting device on a substrate corresponding to a display area;

[0048] S2: forming a circle of blocking components at least partially including a channel structure at a position on the edge of the substrate corresponding to the non-display area;

[0049] S3: Directly depositing a filter material on a side of the barrier component close to the display area to form a filter membrane that at least covers the entrance of the channel structure;

[0050] S4: inkjet printing an organic encapsulation material containing a solvent and a solute above the first insulating layer and within a circle of the blocking component;

[0051] S5: after the solvent in the organic encapsulation material passes through the filter membrane, it penetrates from the position of the channel structure of the barrier component to the outer side of the barrier component away from the display area, so as to accelerate the solidification of the organic encapsulation material to form an organic encapsulation layer;

[0052] S6: forming an inorganic encapsulation layer 170 on the organic encapsulation layer and the barrier component to cover the organic encapsulation layer and the barrier component, thereby obtaining a display panel after encapsulation.

[0053] Compared with the prior art display panel 100 packaging, in which the blocking component 150 used to block the flow of ink only adopts a single circle of blocking components 150 or a combination of multiple circles of blocking components 150, the manufacturing method of the display panel 100 of the present application includes forming a blocking component 150 that at least partially contains a channel structure 160 at a position corresponding to the non-display area 190 at the edge of the substrate 110, directionally depositing a filter material on a side of the blocking component 150 close to the display area 180 to form a filter membrane 300 that at least covers the entrance of the channel structure 160, and inkjet printing an organic packaging material containing a solvent and a solute in the blocking component 150 above the light-emitting device 120; in this way, the organic packaging material is inkjet printed, and the solvent The mixed ink with the solute flows toward the edge of the display area 180. When encountering the filter membrane 300, the solvent first passes through the filter membrane 300 under the action of the liquid pressure, and then flows out from the blocking component 150 with the channel structure 160, and penetrates to the outer side of the blocking component 150 away from the display area 180. At this time, part of the solvent in the mixed ink has been filtered through the filter membrane 300 and the blocking component 150. At this time, the curing speed of the organic encapsulation material can be greatly improved, and the organic encapsulation layer 140 can be quickly cured to form the organic encapsulation layer 140. In addition, an inorganic encapsulation layer 170 is subsequently formed above the organic encapsulation layer 140 and the blocking component 150 to cover the organic encapsulation layer 140 and the blocking component 150, and the speed of completing the overall encapsulation is also improved.

[0054] The organic encapsulation layer 140 easily absorbs moisture, which can easily corrode the internal light-emitting device 120 and affect the performance of the light-emitting device 120. Therefore, a first insulating layer 130 can also be deposited above the light-emitting device 120 to form an isolation between the light-emitting device 120 and the organic encapsulation layer 140 to prevent moisture from corroding the light-emitting device 120.

[0055] Figure 2 yes Figure 1 A schematic diagram of the further steps after step S5 in FIG. Figure 2 As shown, when the solvent in the organic encapsulation material passes through the filter membrane, it penetrates from the position of the channel structure of the barrier component to the outer side of the barrier component away from the display area to accelerate the solidification of the organic encapsulation material to form an organic encapsulation layer, the step further includes the following steps:

[0056] S7: Directedly heating the solvent that has penetrated into the outer side of the barrier component away from the display area to accelerate the evaporation rate of the solvent.

[0057] That is, when the organic encapsulation material is inkjet printed, the solvent in the organic encapsulation material can penetrate from the porous material position of the blocking component 150 to the outside away from the display area 180. At this time, the outer area can be simultaneously heated in a direction so that the solvent in the outer area can also be evaporated, so that the entire substrate 110 remains dry and the presence of water vapor is reduced.

[0058] If there is no storage structure in the non-display area for the solvent that has penetrated, the solvent may evaporate too slowly and overflow, which is troublesome to handle. Therefore, a groove structure 200 can be dug on the substrate 110 and located on the side of the barrier component 150 away from the display area 180 to store the solvent that has penetrated from the channel structure 160 of the barrier component 150.

[0059] Therefore, after forming a barrier component at least partially made of porous material at a position corresponding to the non-display area at the edge of the substrate, the method includes the following steps:

[0060] S8: On the substrate, a circle of groove structure is dug at the outer side of the blocking component away from the display area 180;

[0061] The step of directionally heating the solvent that has penetrated into the outer side of the barrier component away from the display area to accelerate the evaporation rate of the solvent includes the steps of:

[0062] S71: the solvent in the organic packaging material penetrates into the groove structure from the channel structure position of the blocking component;

[0063] S72: Directedly heating the solvent in the groove structure.

[0064] The directional heating is carried out when the organic encapsulation material starts to be inkjet printed. After the solvent flows out, it enters the groove structure 200 on the substrate 110. Since the groove structure 200 is located far away from the display area 180, the location can be heated in a directional manner to accelerate the evaporation of the solvent by increasing the heating. Of course, it is also possible to increase the gas flow rate in the non-display area 190 to accelerate the evaporation of the solvent, which is not limited here.

[0065] In order to further ensure the sealing of the package, after the inorganic packaging layer 170 is completed, an inorganic insulating layer can be added above the inorganic packaging layer 170, and the inorganic insulating layer can be deposited corresponding to the groove structure 200. The groove structure 200 is embedded with the inorganic insulating layer, so that if there is water vapor outside the non-display area, the path for the water vapor to enter the display area 180 is increased, thereby avoiding the invasion of water vapor and ensuring the display effect of the display panel 100.

[0066] Among them, the shape and structure of the channel structure in the blocking component are different. The present application is described in detail from the structural point of view with reference to the accompanying drawings and optional embodiments.

[0067] First embodiment:

[0068] Figure 5 is a schematic block diagram of a display device provided in the first embodiment of the present application; Figure 6 is a schematic diagram of a cross-sectional structure of a display panel provided in the first embodiment of the present application, such as Figure 5-6 As shown, the present application also discloses a display device 10, including a display panel 100, wherein the display panel 100 is manufactured by the above-mentioned display panel manufacturing method. Specifically, the display panel 100 includes a substrate 110, a light-emitting device 120, a first insulating layer 130, an organic encapsulation layer 140, a blocking component 150 and a filter membrane 300. The light-emitting array is arranged on the substrate 110 to form a display area 180, and the first insulating layer 130 is arranged above the light-emitting device 120 and covers the display area 180; the blocking component 150 is arranged in a circle corresponding to the non-display area 190 of the substrate 110, wherein a channel structure 160 is provided in the blocking component 150, and the filter membrane 300 is arranged on a side of the blocking component 150 close to the display area 180, and is arranged corresponding to the channel structure 160. The solvent in the mixed ink can be filtered through the filter membrane 300 and the channel structure 160 to accelerate the encapsulation of the organic encapsulation layer 140, and the first insulating layer 130 is arranged between the light-emitting device 120 and the organic encapsulation layer 140 to prevent the erosion of the light-emitting device 120 caused by the moisture absorbed by the organic encapsulation layer 140, thereby better encapsulating the light-emitting device 120.

[0069] In general inkjet printing, the solvent molecules of the mixed ink are generally ethanol, which is smaller than the solute molecules. The molecular size of ethanol is about 0.76nm, and the pore size of the filter membrane 300 can be 0.76-1nm. The filter membrane 300 can be made of materials such as graphene nanofilm and silicon oxide nanofilm. Of course, other mixed inks can also be used, and the corresponding materials for making the filter membrane 300 can also be appropriately selected.

[0070] Among them, the filter membrane is arranged corresponding to the entrance of the channel structure, and the entrance of the channel structure is close to the side of the display area, that is, the entire surface of the filter membrane 300 is laid on the side of the blocking column 151 close to the display area 180. This simplifies the process. Of course, it is also possible to set the filter membrane 300 only corresponding to each sub-channel 161, which can reduce the use of filter membrane 300 material.

[0071] in, Figure 7is a schematic cross-sectional structure diagram of a barrier assembly provided in the first embodiment of the present application, such as Figure 7 As shown, the blocking component 150 includes a blocking column 151, and the channel structure 160 is arranged in the blocking column 151. The channel structure 160 includes a plurality of sub-channels 161 that penetrate the blocking component 150. The plurality of sub-channels 161 are arranged at intervals in the blocking component 150 along the extension direction of the blocking component 150, and each of the sub-channels 161 is tilted along the direction from the display area 180 to the non-display area 190; that is, the horizontal height of the inlet of each of the sub-channels 161 is higher than the horizontal height of the outlet of each of the sub-channels 161, presenting an oblique upward direction, so that when the solvent passes through the filter membrane 300, it is easier to flow from the plurality of sub-channels 161 to the non-display area 190. Among them, assuming that the angle between each of the sub-channels 161 and the horizontal plane is a, 30°≦a≦60°. Preferably, the inventors have conducted experiments and found, in combination with the height of the blocking column 151, that when a=45°, the mixed ink of the organic encapsulation material inkjet printing can be filtered and flowed out from each sub-channel 161, and the entire filtration process is carried out continuously. Moreover, the overall filtration and outflow speed of the solvent is relatively uniform and fast, and the curing of the organic encapsulation layer 140 can be relatively fast and uniform.

[0072] According to the size of the blocking column 151, four sub-channels 161 can be provided in the blocking column 151, so that the supporting strength of the blocking column 151 and the filtering speed can be ensured at the same time. Moreover, the apertures of the plurality of sub-channels 161 are equal, so that the flow rate of the solvent in each sub-channel 161 is basically balanced, so that the solute is precipitated more evenly, and the curing speed of each part of the organic encapsulation layer 140 is basically consistent, which is beneficial to the subsequent encapsulation of the inorganic encapsulation layer 170 and enhances the encapsulation effect.

[0073] Of course, the inclination angle of the sub-channel 161, the number of the sub-channel 161 and the size of the aperture of the sub-channel 161 can be adaptively adjusted according to the actual size of the blocking column 151 and the thickness of the organic encapsulation layer 140, and are not limited here.

[0074] In addition, each sub-channel 161 can be divided into sections, and each section can be set at a different inclination angle, and each section can be interconnected to form a complete sub-channel 161. Through different inclination angles, different hydraulic pressures are formed in each section, which offset each other and make the overall penetration rate relatively uniform.

[0075] Figure 8 FIG. 1 is a schematic flow chart of the steps of the method for making a barrier column provided in the first embodiment of the present application. Figure 8 As shown, the method for making the blocking column comprises the steps of:

[0076] S31: manufacturing a channel mold having a plurality of sub-channels;

[0077] S32: fixing the channel mold at a position on the edge of the substrate corresponding to the non-display area;

[0078] S33: depositing a barrier material on the channel mold to form a barrier column having a channel structure.

[0079] The channel mold may be made of a material that expands with heat and contracts with cold. After the blocking column 151 is formed, the channel mold is removed by heating. Alternatively, a material that is easily dissolved by acid or alkali may be used, so that the channel mold can be dissolved by an acidic or alkaline liquid. Of course, the channel mold may not be removed, which can also increase the support strength of the blocking column 151.

[0080] like Figure 7 As shown, combined Figure 6 , the display panel 100 is cut into a cross section of the display panel 100 in the arrangement direction of the light emitting device 120, the blocking component 150 further includes a blocking portion 152, the blocking portion 152 is arranged on the side of the blocking column 151 away from the substrate 110, and the cross section of the blocking portion 152 is a structure that is wide at the top and narrow at the bottom, wherein the width of the blocking portion 152 is greater than the width of the blocking column 151, that is, the blocking portion 152 and the blocking column 151 are combined to form a T-shaped blocking component 150. The T-shaped blocking component 150 can be formed by etching the T-shaped structure by gas etching after the entire blocking component 150 is deposited and formed, and specifically, the ratio of si / O / N in the upper and lower layers can be adjusted to be different, so as to adjust the etching rate of the etching gas to form different shapes of the blocking portion 152 and the blocking column 151. Among them, the blocking portion 152 can be made of inorganic silicon nitride material with a certain strength or organic insulating PFA material to provide a certain support strength, and the blocking column 151 can be made of ordinary resin material. Of course, the blocking portion 152 and the blocking column 151 may also be made of other materials, which can be selected according to actual needs.

[0081] Fig. 9 FIG. 1 is a schematic diagram of a blocking component 150 provided in the first embodiment of the present application filtering an inkjet-printed organic encapsulating material. The arrows in the figure indicate the flow direction of the solvent in the organic encapsulating material. Fig. 9 As shown, combined Figure 7It can be seen that the cross-sectional structure of the blocking portion 152 includes a first side 154, a second side 155, a third side 156 and a fourth side 157 which are connected to each other. The first side 154 is arranged opposite to the second side 155, and the third side 156 and the fourth side 157 are arranged opposite to each other. The width of the first side 154 is greater than the width of the second side 155. When the mixed ink of the organic encapsulation material printed by inkjet printing passes over the blocking column 151, the blocking portion 152 can also be used to block it to prevent overflow. The third side 156 and the fourth side 157 are both arc-shaped sides. The cross-section of the blocking portion 152 is a semicircular structure, and protrusions 153 are formed on both sides. The arc-shaped sides of the protrusions 153 close to the display area 180 can guide the mixed ink toward the blocking column 151 to sink the solute, and the solvent penetrates through the filter membrane 300 and the channel structure 160, thereby weakening the "coffee ring effect" of the solute during solidification and making the solute form a uniform film.

[0082] Moreover, the upper surface area of ​​the barrier portion 152 formed in this way is relatively large. After the encapsulation of the organic encapsulation layer 140 is completed, when the inorganic encapsulation layer 170 is encapsulated, the inorganic encapsulation layer 170 can be better leveled and the contact area with the inorganic encapsulation layer 170 is increased, so as to achieve the effect of dispersing stress and strengthen the encapsulation effect of the inorganic encapsulation layer 170. Of course, it is also possible to set the cross section of the barrier portion 152 to be rectangular or inverted trapezoidal.

[0083] The width of the cross section of the blocking column 151 is 20-50um, and the width of the cross section of the blocking portion 152 is 30-60um. The blocking component 150 can be arranged in a circle, so that the solvent of the organic encapsulation material can reach the non-display area for evaporation after being filtered by a circle of the blocking component 150, thereby accelerating the formation of the organic encapsulation layer 140 and keeping the non-display area tidy, which is conducive to the subsequent encapsulation of other encapsulation layers. Of course, the number of circles of the blocking component 150 can also be designed according to the actual encapsulation requirements of the display panel 100, which is not limited here.

[0084] Second embodiment:

[0085] Fig.10 A schematic cross-sectional view of the blocking assembly provided in the second embodiment of the present application is shown in FIG. Fig.11 is a schematic diagram of a barrier component filtering an inkjet-printed organic encapsulation material provided in a second embodiment of the present application, combined with Figure 10-11As a second embodiment of the present application, this embodiment is different from the first embodiment in that the channel structure 160 includes a first channel 162, a second channel 163, a third channel 164, a fourth channel 165 and a fifth channel 166, the first channel 162, the second channel 163 and the third channel 164 are arranged on a side of the blocking component 150 close to the filter membrane 300, and are arranged at intervals along the extension direction of the blocking component 150, and the first channel 162, the second channel 163 and the third channel 164 are arranged obliquely in a direction from the display area 180 to the non-display area 190;

[0086] The fourth channel 165 is vertically arranged in the blocking column 151 and is located on the side of the first channel 162, the second channel 163 and the third channel 164 away from the display area 180, and the fourth channel 165 is respectively connected with the first channel 162, the second channel 163 and the third channel 164, the fifth channel 166 is arranged in the blocking component 150 at one end close to the substrate 110 and passes through the blocking component 150, and the fourth channel 165 is connected with the fifth channel 166.

[0087] That is, after the mixed ink located at the upper and middle parts of the blocking column 151 is filtered through the filter membrane 300, the solvent flows through the first channel 162, the second channel 163 and the third channel 164 respectively in a direction away from the non-display area 190, and then is gathered through the fourth channel 165. After being gathered, it penetrates out from the fifth channel 166, while the solvent located at the lower part directly penetrates through the fifth channel 166. Since the hydraulic pressure of the liquid is different at different heights, the hydraulic pressure at the bottom is relatively large, while the hydraulic pressure at the top is relatively small, so the speed of solvent penetration will be different. When the solvent passing through the first channel 162, the second channel 163 and the third channel 164 converge in the fourth channel 165, there is a certain pressure in the fourth channel 165, which forms a confrontation with the hydraulic pressure in the first channel 162, the second channel 163 and the third channel 164, so that the flow speed of the first channel 162, the second channel 163 and the third channel 164 is relatively stable and uniform. Similarly, when converging to the fifth channel 166, the fifth channel 166 must simultaneously converge the fourth channel 165 and the solvent near the insulating layer, and can also form a mutually opposing pressure in the fifth channel 166, so that the hydraulic pressure of the converged solvent will not be too large, causing blockage in the fifth channel 166, or even destroying the entire blocking column 151.

[0088] Since the fourth channel 165 and the fifth channel 166 are both used to collect solvents, the apertures of the fourth channel 165 and the fifth channel 166 can be larger than the apertures of the first channel 162, the second channel 163 and the third channel 164, which effectively alleviates the impact when the solvents are collected.

[0089] Among them, the widths of the first channel 162, the second channel 163 and the third channel 164 can be set to occupy 10%-15% of the width of the entire blocking column 151, and after being arranged in coordination with the fourth channel 165, the width of the fourth channel 165 plus the width of the first channel 162 or the width of the fourth channel 165 plus the width of the second channel 163 or the width of the fourth channel 165 plus the width of the third channel 164 shall not exceed 50% of the width of the blocking column 151 to ensure the supporting strength of the blocking column 151.

[0090] In addition, the fourth channel 165 may be arranged at an angle, which may appropriately increase the penetration rate of the fourth channel 165; and another channel may be arranged above the fifth channel 166 to be connected to the fourth channel 165, so that the aperture of the fifth channel 166 can be made smaller, and another channel may be used in conjunction with the fifth channel 166 to disperse the solvent in the fourth channel 165, which may also accelerate the overall penetration rate of the solvent, and is beneficial to speeding up packaging.

[0091] It should be noted that the limitations on the various steps involved in this solution, without affecting the implementation of the specific solution, are not deemed to limit the order of the steps. The steps written in front can be executed first, or later, or even simultaneously. As long as this solution can be implemented, it should be deemed to fall within the scope of protection of this application.

[0092] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0093] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A method for manufacturing a display panel, characterized in that: Includes steps: forming a light emitting device on the substrate corresponding to the display area; Forming a blocking component at least partially including a channel structure at a position of the edge of the substrate corresponding to the non-display area; Directly depositing a filter material on a side of the barrier component close to the display area to form a filter membrane that at least covers the entrance of the channel structure; inkjet printing an organic encapsulation material containing a solvent and a solute within the barrier assembly above the light emitting device; When the solvent in the organic encapsulation material passes through the filter film, it penetrates from the channel structure of the barrier component to the outer side of the barrier component away from the display area to accelerate the curing of the organic encapsulation material to form an organic encapsulation layer; forming an inorganic encapsulation layer on the organic encapsulation layer and the barrier component to cover the organic encapsulation layer and the barrier component to obtain a display panel after encapsulation; The step of, after the solvent in the organic encapsulation material passes through the filter membrane, penetrating from the position of the channel structure of the barrier component to the outer side of the barrier component away from the display area to accelerate the solidification of the organic encapsulation material to form an organic encapsulation layer, further includes the following steps: Directively heating the solvent that has penetrated into the outer side of the barrier component away from the display area to accelerate the evaporation rate of the solvent; Wherein, the blocking component includes a blocking column, the channel structure is arranged in the blocking column, the channel structure includes a plurality of sub-channels penetrating the blocking component, the plurality of sub-channels are arranged at intervals in the blocking component along the extension direction of the blocking component, and each of the sub-channels is arranged obliquely along the direction from the display area to the non-display area; Here, the included angle between each sub-channel and the horizontal plane is assumed to be a, 30°≦a≦60°.

2. The method for manufacturing a display panel according to claim 1, wherein: After forming a blocking component containing a channel structure at a position on the edge of the substrate corresponding to the non-display area, the method comprises the following steps: A groove structure is dug on the substrate at an outer side of the blocking component away from the display area; The step of directionally heating the solvent that has penetrated into the outer side of the barrier component away from the display area to accelerate the evaporation rate of the solvent includes the steps of: The solvent in the organic encapsulation material penetrates into the groove structure from the position of the channel structure of the blocking component; Directional heating is performed on the solvent in the groove structure to accelerate the evaporation speed of the solvent.

3. A display panel, characterized in that: The display panel comprises a substrate, a light-emitting device, an organic encapsulation layer, a blocking component and a filter film, wherein the light-emitting device is arranged on the substrate to form a display area, and the organic encapsulation layer is arranged above the light-emitting device and covers the display area; the blocking component is arranged around a non-display area of ​​the substrate, and the filter film is arranged on a side of the blocking component close to the display area; wherein the blocking component is at least partially provided with a channel structure, and the filter film at least covers the entrance of the channel structure; The blocking component includes a blocking column, the channel structure is arranged in the blocking column, the channel structure includes a plurality of sub-channels penetrating the blocking component, the plurality of sub-channels are arranged at intervals in the blocking component along the extension direction of the blocking component, and each of the sub-channels is arranged obliquely along the direction from the display area to the non-display area; Here, the included angle between each sub-channel and the horizontal plane is assumed to be a, 30°≦a≦60°.

4. The display panel according to claim 3, wherein: The apertures of the plurality of sub-channels are all equal.

5. A display panel, characterized in that: The display panel includes a substrate, a light-emitting device, an organic encapsulation layer, a blocking component and a filter film, wherein the light-emitting device is arranged on the substrate to form a display area, and the organic encapsulation layer is arranged above the light-emitting device and covers the display area; the blocking component is arranged around the non-display area of ​​the substrate, and the filter film is arranged on a side of the blocking component close to the display area; wherein the blocking component is at least partially provided with a channel structure, and the filter film at least covers the entrance of the channel structure; the blocking component includes a blocking column, and the channel structure is arranged in the blocking column, and the channel structure includes a first channel, a second channel, a third channel, a fourth channel and a fifth channel, wherein the first channel, The second channel and the third channel are arranged on a side of the blocking component close to the filter membrane and are arranged at intervals along the extension direction of the blocking component. The first channel, the second channel and the third channel are inclined along the direction from the display area to the non-display area. The fourth channel is vertically arranged in the blocking column and is located on a side of the first channel, the second channel and the third channel away from the display area, and the fourth channel is respectively connected to the first channel, the second channel and the third channel. The fifth channel is arranged at one end of the blocking component close to the substrate and passes through the blocking component. The fourth channel is connected to the fifth channel.

6. The display panel according to claim 5, wherein: The apertures of the fourth channel and the fifth channel are both larger than the apertures of the first channel, the second channel, and the third channel.

7. The display panel according to claim 3 or 5, characterized in that: The blocking component further includes a blocking portion, and the blocking portion is arranged on a side of the blocking column away from the substrate; the cross section of the blocking component is T-shaped.

8. The display panel according to claim 7, wherein: The cross-sectional structure of the blocking portion comprises a first side, a second side, a third side and a fourth side which are connected to each other, the first side is arranged opposite to the second side, the third side and the fourth side are arranged opposite to each other, the width of the first side is greater than the width of the second side; the third side and the fourth side are both arc-shaped sides, and the cross-section of the blocking portion (152) is a semicircular structure.

9. A display device, characterized in that: Comprising a display panel as described in any one of claims 3-8.

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