Display panel, film forming apparatus, and method of manufacturing display panel

Abstract

The present application provides a display panel, a film forming device, and a method for manufacturing a display panel. The display panel includes an array substrate; a pixel definition layer disposed on the array substrate, the pixel definition layer including a plurality of opening regions and barrier ribs surrounding the opening regions; a blocking portion disposed on the array substrate, the blocking portion surrounding the outside of the barrier ribs, the height of the blocking portion being greater than that of the barrier ribs, at least one barrier rib being spaced apart from the blocking portion to form an ink pumping region, and the ink pumping region communicating with the opening region. In the present application, organic ink is printed into the opening regions of the barrier ribs through an inkjet mechanism. The height of the blocking portion is greater than that of the barrier ribs, and the blocking portion is used to enclose the organic ink within the blocking portion, and the barrier ribs are immersed in the organic ink. After inkjet printing is completed, the excess organic ink in the ink pumping region on the display substrate is pumped out through an ink pumping mechanism, so that the surface of the organic ink in the opening region is flush with the surface of the barrier ribs, thereby improving the film forming uniformity of the light emitting layer formed by the organic ink.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and particularly relates to a display panel, a film forming device, and a method for manufacturing a display panel. Background Art

[0002] Organic Light Emitting Diode (OLED) has attracted the favor of universities and enterprises due to its many advantages such as self-luminescence, high brightness, high contrast, fast response speed, wide viewing angle, simple structure, and flexible display. It has developed rapidly and is widely used in display products due to its excellent performance.

[0003] Compared with the problems faced by making OLEDs by conventional evaporation methods, such as low material utilization rate, Inkjet Printing Technology (IJP) has gradually been widely used in the field of flat panel displays due to its advantages of high material utilization rate and low cost. The printing methods of inkjet printing technology include Side by Side (SBS) and Line bank, etc. The Line bank printing method has been widely used in OLED production due to its advantages of high printing uniformity and high speed. However, when producing OLED devices using inkjet printing technology, due to the error in the inkjet volume between multiple nozzles, the spreading property of the ink is uneven, and the film thickness of the light-emitting functional layer after drying is uneven, which in turn affects the display effect of the OLED display panel. Summary of the Invention

[0004] The present application provides a display panel, a film forming device, and a method for manufacturing a display panel to solve the problem of uneven film thickness of the light-emitting functional layer of the display panel.

[0005] On the one hand, the present application provides a display panel, including:

[0006] An array substrate;

[0007] A pixel definition layer disposed on the array substrate, the pixel definition layer includes a plurality of opening regions, and barrier dams surrounding the opening regions;

[0008] A blocking portion disposed on the array substrate, the blocking portion is disposed outside the barrier dams, the height of the blocking portion is greater than that of the barrier dams, at least one of the barrier dams is spaced from the blocking portion to form an ink suction region, and the ink suction region is communicated with the opening region.

[0009] In a possible implementation manner of the present application, the heights of the plurality of barrier dams are the same.

[0010] In a possible implementation manner of the present application, the cross-section of the barrier dam is a conical structure.

[0011] On the other hand, the present application also provides a film forming device for the display panel, including an inkjet mechanism and an ink pumping mechanism;

[0012] The inkjet mechanism is used to print the organic ink onto the opening area of the display panel;

[0013] The ink pumping mechanism is used to pump out the excess organic ink in the ink pumping area.

[0014] In a possible implementation manner of the present application, the film forming device further includes:

[0015] An ink storage mechanism for storing the excess organic ink pumped out from the ink pumping area;

[0016] The inkjet mechanism is also used to extract the organic ink from the ink storage mechanism and print the extracted organic ink into the opening area of the display panel.

[0017] In a possible implementation manner of the present application, the ink pumping mechanism includes:

[0018] A first pipeline, one end of which is connected to the array substrate, and the other end of the first pipeline is connected to the ink storage mechanism;

[0019] A first ink pump, connected to the first pipeline, for pumping out the organic ink in the ink storage container.

[0020] In a possible implementation manner of the present application, the inkjet mechanism includes:

[0021] A nozzle;

[0022] A second pipeline, connected between the nozzle and the inkjet mechanism;

[0023] A second ink pump, connected to the second pipeline, for pumping out the organic ink in the ink storage container.

[0024] In a possible implementation manner of the present application, the film forming device further includes:

[0025] A cutting mechanism for cutting off the blocking part of the display panel on which the organic ink is printed.

[0026] In a possible implementation manner of the present application, the organic ink material at least includes: a hole transport material, an organic light emitting material, and an electron transport material, and the ink storage mechanism includes at least three, and each ink storage mechanism is respectively used to store one of the hole transport material, the organic light emitting material, and the electron transport material.

[0027] On the other hand, the present application also provides a manufacturing method of a display panel for processing the display panel, and the method includes:

[0028] Provide a display panel;

[0029] Adopt an inkjet mechanism to print organic ink onto the opening area of the display panel, so that the dam is immersed in the organic ink;

[0030] Adopt an ink extraction mechanism to extract the excess organic ink in the ink extraction area, so that the surface of the organic ink in the opening area is flush with the surface of the dam;

[0031] Dry the organic ink in the opening area to form a film of the organic ink in the opening area, thereby forming a light-emitting functional layer.

[0032] A display panel, a film-forming device and a manufacturing method of the display panel provided by the present application. By providing a blocking portion outside the pixel definition layer on the array substrate, the pixel definition layer is provided with an opening area and a dam, and at least one of the dams is spaced from the blocking portion to form an ink extraction area. The organic ink is printed into the opening area of the dam through an inkjet mechanism. The height of the blocking portion is greater than that of the dam. The blocking portion is used to enclose the organic ink within the blocking portion. Since the ink extraction area is communicated with the opening area, the dam is immersed in the organic ink. Since the ink extraction area is communicated with the opening area, the organic ink in the opening area will also flow into the ink extraction area. After inkjet printing, the excess organic ink in the ink extraction area on the display substrate is extracted through the ink extraction mechanism, so that the water level of the organic ink in the blocking portion drops until the surface of the organic ink in the opening area is flush with the surface of the dam, thereby improving the consistency of the film-forming morphology between multiple opening areas, improving the film-forming uniformity of the light-emitting layer formed by the organic ink, and further improving the display uniformity of the organic light-emitting device. Description of the Drawings

[0033] The following will, by describing in detail the specific embodiments of the present application with reference to the drawings, make the technical solutions and other beneficial effects of the present application obvious.

[0034] Figure 1 It is a top view structural schematic diagram of the display panel provided by the embodiment of the present application.

[0035] Figure 2 It is a cross-sectional structural schematic diagram of the display panel provided by the embodiment of the present application.

[0036] Figure 3 It is a structural schematic diagram of the film-forming device provided by the embodiment of the present application.

[0037] Figure 4 It is a structural schematic diagram of the film-forming device provided by another embodiment of the present application.

[0038] Figure 5 It is a structural schematic diagram of the film-forming device provided by another embodiment of the present application.

[0039] Figure 6 This is a schematic diagram of the manufacturing process of a display panel provided by an embodiment of the present application. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0041] In the description of the present application, it should be understood that the features of "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined. It should be noted that unless otherwise clearly defined and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection or interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0042] The following disclosure provides many different implementation manners or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various implementation manners and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0043] An embodiment of the present application provides a display panel, a film forming device, and a method for manufacturing a display panel, which will be introduced in detail below.

[0044] Please refer to Figure 1 - Figure 2 , an embodiment of the present application provides a display panel, including an array substrate 10, a pixel definition layer 20, and a blocking portion 30.

[0045] The array substrate 10 includes a plurality of thin film transistors (TFTs) arranged in an array for controlling the light-emitting function layer 22 to emit light.

[0046] The pixel definition layer 20 is disposed on the array substrate 10. The pixel definition layer 20 includes a plurality of opening regions 201 and a barrier rib 21 surrounding the opening regions 201.

[0047] It should be understood that the plurality of opening regions 201 in each pixel region are used to form a plurality of sub-pixels. The opening regions 201 may have a light-emitting functional layer 22 of the same color. During the process of fabricating an Organic Light Emitting device (OLED) by inkjet printing, the plurality of sub-opening regions 201 communicate with each other, and the organic ink 23 can cross the barrier rib 21, so that the volume of the organic ink 23 communicating between each opening region 201 is equalized, and the light-emitting functional layer 22 in each opening region 201 forms a uniform film.

[0048] It can be understood that the light-emitting functional layer 22 at least includes an organic light-emitting layer, and it may also include other functional layers, such as: a hole injection layer, a hole transport layer, an electron transport layer, etc., which are not particularly limited herein. Among them, the plurality of sub-pixels, that is, the color of the organic light-emitting layer, may be the same color or different colors. Exemplarily, when the display panel of the embodiment of the present application is applied to a WOLED display panel or a QD-OLED display panel, the color of the organic light-emitting layer may be the same color.

[0049] Taking the QD-OLED display panel as an example, the OLED light-emitting device is a blue OLED light-emitting device, the color filter layer is a quantum dot color filter layer, and the quantum dot color filter layer is only disposed in the red and green sub-pixels. The blue light emitted by the blue OLED light-emitting device is converted into red or green by the quantum dot color filter layer. In this structure, the blue sub-pixels do not need to be provided with a color filter, and the blue light can directly pass through the upper transparent film layer and emit, showing blue. In the QD-OLED display panel, each quantum dot light-emitting layer can be directly formed in the opening region 201 by inkjet printing or the like. Therefore, when the display panel of the embodiment of the present application is applied to a QD-OLED display panel, the organic light-emitting layers can all be blue.

[0050] Taking the WOLED display panel as an example, the WOLED display panel adopts the technology of combining white light emission with a color filter layer to achieve full-color display. Three white light-emitting OLED devices plus the RGB three-primary color filter layers are used to form the three-primary color light emission visually, thereby making the white light more uniform and having a higher brightness. Therefore, when the display panel of the embodiment of the present application is applied to a WOLED display panel, the organic light-emitting layers can all be white.

[0051] The blocking portion 30 is disposed on the array substrate 10. The blocking portion 30 is disposed around the outside of the barrier rib 21. Among them, as Figure 1 shown, the blocking portion 30 is an annular blocking portion, and the height of the blocking portion 30 is greater than that of the barrier rib 21 to ensure that the ink does not overflow.

[0052] The barrier dam 21 includes a plurality of outer barrier dams 21, and at least one outer barrier dam 21 is spaced apart from the blocking portion 30 to form an ink pumping area 202, and the ink pumping area 202 communicates with the opening area 201.

[0053] In the display panel according to the embodiment of the present application, by disposing the blocking portion 30 outside the pixel definition layer 20 on the array substrate 10, the pixel definition layer 20 is provided with an opening area 201 and a barrier dam 21, and at least one barrier dam 21 is spaced apart from the blocking portion 30 to form an ink pumping area 202. The organic ink 23 is printed into the opening area 201 of the barrier dam 21 by an external inkjet mechanism 50. The height of the blocking portion 30 is greater than that of the barrier dam 21. The blocking portion 30 is used to enclose the organic ink 23 within the blocking portion 30, so that the barrier dam 21 is immersed in the organic ink 23. Since the ink pumping area 202 communicates with the opening area 201, the organic ink 23 in the opening area 201 will also flow into the ink pumping area 202. Then, the excess organic ink 23 in the ink pumping area 202 on the display substrate is pumped out by an external ink pumping mechanism 40, so that the water level of the organic ink 23 in the blocking portion 30 drops until the surface of the organic ink 23 in the opening area 201 is flush with the surface of the barrier dam 21, thereby improving the consistency of the film formation morphology between the plurality of opening areas 201, so that the film formation uniformity of the light-emitting layer formed by the organic ink 23 is improved, and further improving the display uniformity of the organic light-emitting device.

[0054] In some embodiments, the heights of the plurality of barrier dams 21 are the same. Thus, the height of the organic ink 23 in each opening area 201 can be the same, which is beneficial to realizing the film thickness uniformity of the light-emitting layer formed by the organic ink 23.

[0055] In some embodiments, the cross-section of the barrier dam 21 is a conical structure. By making the cross-section of the barrier dam 21 a conical structure, that is, the barrier dam 21 is in a triangular prism structure, when the excess organic ink 23 is pumped away from the ink pumping area 202, there will be no organic ink 23 residue on the side of the barrier dam 21 facing away from the array substrate 10, so that the printing accuracy can be improved, and at the same time, it is beneficial to save the organic ink 23 material.

[0056] Of course, in other embodiments, the cross-section of the barrier dam 21 can also be a trapezoidal structure, that is, the barrier dam 21 is in a dike-like structure, and the formation of pixel openings can also be realized, which is not specifically limited herein.

[0057] To better implement the display panel of the present application, the embodiment of the present application also provides a film forming device for processing the display panel to form a light-emitting functional layer 22 with uniform film thickness. Please refer to Figure 3 - Figure 4 The film forming device includes an inkjet mechanism 50 and an ink pumping mechanism 40.

[0058] The inkjet mechanism 50 is used to print the organic ink 23 onto the opening area 201 of the display panel. The ink pumping mechanism 40 is used to pump out the excess organic ink 23 in the ink pumping area 202.

[0059] Among them, the organic ink 23 is a conventional printing ink, and the solvents used can be water, diethylene glycol and other water-based solvents or toluene, methyl benzoate and other oil-based solvents. The solute can be the functional layer material in the organic electroluminescent device. Among them, the film thickness of the finally formed light-emitting functional layer 22 can be controlled by adjusting the ink concentration.

[0060] In the film forming device according to the embodiment of the present application, the organic ink 23 is printed into the opening area 201 of the barrier dam 21 through the inkjet mechanism 50. The height of the blocking part 30 is greater than that of the barrier dam 21. The blocking part 30 is used to enclose the organic ink 23 within the blocking part 30, so that the barrier dam 21 is immersed in the organic ink 23. Since the ink pumping area 202 is connected to the opening area 201, the organic ink 23 in the opening area 201 will also flow into the ink pumping area 202. Then, the excess organic ink 23 in the ink pumping area 202 on the display substrate is pumped out through the external ink pumping mechanism 40, so that the water level of the organic ink 23 in the blocking part 30 drops until the surface of the organic ink 23 in the opening area 201 is flush with the surface of the barrier dam 21, thereby improving the consistency of the film forming morphology between multiple opening areas 201, so that the film forming uniformity of the light-emitting layer formed by the organic ink 23 is improved, and further improving the display uniformity of the organic light-emitting device.

[0061] In some embodiments, the film forming device further includes an ink storage mechanism 60. The ink storage mechanism 60 is used to store the excess organic ink 23 pumped out by the ink pumping mechanism 40 from the ink pumping area 202 into the ink storage mechanism 60.

[0062] The inkjet mechanism 50 is also used to extract the organic ink 23 from the ink storage mechanism 60 and print the extracted organic ink 23 into the opening area 201 of the display panel.

[0063] In some embodiments, as Figure 3 shown, the ink pumping mechanism 40 includes a first pipeline 41 and a first ink pump 42.

[0064] One end of the first pipeline 41 is connected to the array substrate 10, and the other end of the first pipeline 41 is connected to the ink storage mechanism 60. Specifically, the end of the first pipeline 41 connected to the array substrate 10 is placed in the ink pumping area 202. The first ink pump 42 is connected to the first pipeline 41. Among them, the first ink pump 42 is used to pump out the excess organic ink 23 in the ink pumping area 202, and the excess organic ink 23 is transported along the first pipeline 41 to the ink storage mechanism 60.

[0065] In some embodiments, the inkjet mechanism 50 includes a nozzle 51, a second ink pump 52 and a second pipeline 53.

[0066] The nozzle 51 can eject printing ink onto the display panel to be processed. The second ink pump 52 is disposed within the inkjet mechanism 50. The second pipeline 53 is connected between the nozzle 51 and the inkjet mechanism 50. Among them, both the first ink pump 42 and the second ink pump 52 are booster pumps. The second ink pump 52 is used to extract the organic ink 23 from the ink storage mechanism 60, and the organic ink 23 in the ink storage mechanism 60 is transported to the nozzle 51 along the second pipeline 53. By setting the inkjet mechanism 50 and the ink storage mechanism 60 as a circulating system, the recycling of the organic ink 23 can be achieved, which is beneficial to cost savings.

[0067] In some embodiments, the film forming device may further include a cutting mechanism (not shown in the figure). The cutting mechanism is used to cut off the outer barrier dam 21 of the display panel formed by printing the organic ink 23. The cutting mechanism is used to cut off the blocking portion 30 of the display panel formed by printing the organic ink 23. By cutting off the blocking portion 30 with the cutting mechanism, while ensuring the uniform film formation of the display panel of the present application, it is beneficial to realize the thinning of the display panel.

[0068] In some embodiments, taking the light emitting functional layer 22 as an example that at least includes a hole transport layer, an organic light emitting layer, and an electron transport layer, the organic ink 23 material at least includes: a hole transport material, an organic light emitting material, and an electron transport material. Among them, the hole transport material, the organic light emitting material, and the electron transport material are respectively used to form the hole transport layer, the organic light emitting layer, and the electron transport layer.

[0069] The number of the ink storage mechanisms 60 is at least 3. Correspondingly, the number of the first pipeline 41 and the second pipeline 53 is also 3. As Figure 5 shown, specifically, the ink storage mechanism 60 may at least include a first ink storage container 61, a second ink storage container 62, and a third ink storage container 63. Correspondingly, the first pipeline 41 includes a first ink extraction branch pipe 411, a second ink extraction branch pipe 412, and a third ink extraction branch pipe 413, and the second pipeline 53 includes a first inkjet branch pipe 531, a second inkjet branch pipe 532, and a third inkjet branch pipe 533.

[0070] Among them, the first ink storage container 61 is used to store the hole transport material. The first ink storage container 61 is connected with a first ink pumping branch pipe 411 and a first ink jetting branch pipe 531. The first ink pumping branch pipe 411 is used to convey the redundant hole transport material in the ink pumping area 202 into the first ink storage container 61, and the first ink jetting branch pipe 531 conveys the hole transport material in the first ink storage container 61 to the nozzle 51, so as to realize ink jet printing to form a hole transport layer. The second ink storage container 62 is used to store the organic light emitting material. The second ink storage container 62 is connected with a second ink pumping branch pipe 412 and a second ink jetting branch pipe 532. The second ink pumping branch pipe 412 is used to convey the redundant organic light emitting material in the ink pumping area 202 into the second ink storage container 62, and the second ink jetting branch pipe 532 conveys the organic light emitting material in the second ink storage container 62 to the nozzle 51, so as to realize ink jet printing to form an organic light emitting layer. The third ink storage container 63 is used to store the electron transport material. The third ink storage container 63 is connected with a third ink pumping branch pipe 413 and a third ink jetting branch pipe 533. The third ink pumping branch pipe 413 is used to convey the redundant electron transport material in the ink pumping area 202 into the third ink storage container 63, and the third ink jetting branch pipe 533 conveys the electron transport material in the third ink storage container 63 to the nozzle 51, so as to realize ink jet printing to form an electron transport layer.

[0071] In addition, as Figure 5 shown, an ink pump can be respectively arranged on each branch pipe. Specifically, the first ink pump 42 at least includes a first ink pumping pump 421, a second ink pumping pump 422 and a third ink pumping pump 423. Exemplarily, the first ink pumping pump 421 is arranged on the first ink pumping branch pipe 411, the second ink pumping pump 422 is arranged on the second ink pumping branch pipe 412, and the third ink pumping pump 423 is arranged on the third ink pumping branch pipe 413. Correspondingly, the second ink pump 52 at least includes a first sub-ink pump 521, a second sub-ink pump 522 and a third sub-ink pump 523.

[0072] The number of nozzles 51 can be set to only 1. A pumping switch valve 54 can be arranged between the nozzle 51 and the first ink jetting branch pipe 531, the second ink jetting branch pipe 532 and the third ink jetting branch pipe 533, so as to realize the control of the ink output selection among the three ink jetting branch pipes and realize the selection of a single ink output material of the nozzle 51. The structure is simple and easy to control. Of course, it can be understood that the number of nozzles 51 can also be set to 3, and each nozzle 51 is respectively connected by three ink jetting branch pipes, so as to realize that each nozzle 51 is respectively used for printing a kind of material.

[0073] It should be noted that the number of the ink pumping mechanism 40, the first ink pump 42, the first pipeline 41, the second ink pump 52, the second pipeline 53 and the nozzle 51, etc. can be determined to be one or more according to the number of specific film layers in the light emitting functional layer 22, and the number is not specifically limited herein.

[0074] Since the organic ink 23 is vacuum dried, the solvent of the organic ink 23 volatilizes. Therefore, when the final light-emitting functional layer 22 is formed into a film, its thickness will be smaller than that of the organic ink 23. Thus, after the hole transport layer is prepared using a hole transport material, an organic light-emitting material or an electron transport material can be used and the organic light-emitting layer or the electron transport layer can be prepared using the same steps as those for preparing the hole transport layer.

[0075] To better implement the display panel of the present application, the embodiments of the present application further provide a manufacturing method of a display panel. For the display panel to be processed, please refer to Figure 6 , and the manufacturing method specifically includes the following steps S101-S104:

[0076] S101. Provide a display panel;

[0077] S102. Use an inkjet mechanism 50 to print the organic ink 23 onto the opening area 201 of the pixel definition layer 20, so that the barrier dam 21 is immersed in the organic ink 23;

[0078] S103. Use an ink pumping mechanism 40 to pump out the excess organic ink 23 in the ink pumping area 202, so that the surface of the organic ink 23 in the opening area 201 is flush with the surface of the barrier dam 21;

[0079] S104. Perform a drying treatment on the organic ink 23 in the opening area 201 to form a film of the organic ink 23 in the opening area 201, thereby forming the light-emitting functional layer 22.

[0080] Specifically, the solvent can be removed by vacuum drying the display panel printed with the organic ink 23. By using the method of vacuum drying, the film morphology obtained can be regulated by controlling the air extraction speed and the maintenance time of a certain pressure during the vacuum drying process. Then, the display panel after vacuum drying is subjected to high-temperature baking to form the light-emitting functional layer 22.

[0081] In the manufacturing method of the display panel according to the embodiment of the present application, a blocking portion 30 is provided outside the pixel definition layer 20 on the array substrate 10. The pixel definition layer 20 is provided with an opening area 201 and a barrier dam 21. At least one barrier dam 21 is spaced apart from the blocking portion 30 to form an ink extraction area 202. Organic ink 23 is printed into the opening area 201 of the barrier dam 21 through an inkjet mechanism 50. The height of the blocking portion 30 is greater than that of the barrier dam 21. The blocking portion 30 is used to enclose the organic ink 23 within the blocking portion 30, so that the barrier dam 21 is immersed in the organic ink 23. Since the ink extraction area 202 is communicated with the opening area 201, the organic ink 23 in the opening area 201 will also flow into the ink extraction area 202. After the inkjet is completed, the excess organic ink 23 in the ink extraction area 202 on the display substrate is extracted through an ink extraction mechanism 40, so that the water level of the organic ink 23 in the blocking portion 30 drops until the surface of the organic ink 23 in the opening area 201 is flush with the surface of the barrier dam 21, thereby improving the consistency of the film formation morphology between multiple opening areas 201, so that the film formation uniformity of the light-emitting layer formed by the organic ink 23 is improved, and further improving the display uniformity of the organic light-emitting device.

[0082] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments. During specific implementation, the above-mentioned respective units or structures may be implemented as independent entities, or may be combined arbitrarily to be implemented as the same or several entities. For the specific implementation of the above-mentioned respective units or structures, reference may be made to the method embodiments described above, which will not be elaborated here.

[0083] The above has introduced in detail a display panel, a film forming device, and a manufacturing method of a display panel provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present application. The description of the above embodiments is only used to help understand the technical solutions and their core ideas of the embodiments of the present application; those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing respective embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the respective embodiments of the present application.

Claims

1. A display panel, characterized in that, it comprises: an array substrate; a pixel definition layer disposed on the array substrate, the pixel definition layer includes a plurality of opening regions, and barrier ribs surrounding the opening regions; a blocking portion disposed on the array substrate, the blocking portion surrounds the outside of the barrier ribs, the height of the blocking portion is greater than that of the barrier ribs, at least one of the barrier ribs is spaced apart from the blocking portion to form an ink pumping region, the ink pumping region communicates with the opening region, and is used to pump out the excess organic ink in the ink pumping region so that the surface of the organic ink in the opening region is flush with the surface of the barrier ribs; a light-emitting functional layer is provided in the opening region, and the surface of the light-emitting functional layer is flush with the surface of the barrier ribs.

2. The display panel according to claim 1, characterized in that, the heights of the plurality of barrier ribs are the same.

3. The display panel according to claim 1, characterized in that, the cross-section of the barrier rib is a conical structure.

4. A film-forming device, characterized in that, it is used to process the display panel according to any one of claims 1-3, and includes an inkjet mechanism and an ink pumping mechanism; the inkjet mechanism is used to print organic ink onto the opening region of the display panel; the ink pumping mechanism is used to pump out the excess organic ink in the ink pumping region.

5. The film-forming device according to claim 4, characterized in that, the film-forming device further includes: an ink storage mechanism for storing the excess organic ink pumped out from the ink pumping region; the inkjet mechanism is further used to extract organic ink from the ink storage mechanism and print the extracted organic ink into the opening region on the display panel.

6. The film-forming device according to claim 5, characterized in that, the ink pumping mechanism includes: a first pipeline, one end of which is connected to the array substrate, and the other end of the first pipeline is connected to the ink storage mechanism; a first ink pump connected to the first pipeline, and is used to pump out the organic ink in the ink storage mechanism.

7. The film-forming device according to claim 5, characterized in that, the inkjet mechanism includes: a nozzle; a second pipeline connected between the nozzle and the inkjet mechanism; a second ink pump connected to the second pipeline, and is used to pump out the organic ink in the ink storage mechanism.

8. The film-forming device according to claim 4, characterized in that, the film-forming device further includes: a cutting mechanism for cutting off the blocking portion of the display panel on which the organic ink is printed.

9. The film-forming device according to any one of claims 5-8, characterized in that, the organic ink at least includes: a hole transport material, an organic light-emitting material, and an electron transport material; the ink storage mechanism includes at least three, and each ink storage mechanism is respectively used to store one of the hole transport material, the organic light-emitting material, and the electron transport material.

10. A manufacturing method of a display panel, characterized in that, it is used to process the display panel according to any one of claims 1-3, and the method includes: providing a display panel; using an inkjet mechanism to print organic ink onto the opening region of the display panel so that the barrier ribs are immersed in the organic ink; An ink pumping mechanism is used to pump out the excess organic ink in the ink pumping area, so that the surface of the organic ink in the opening area is flush with the surface of the barrier dam; The organic ink in the opening area is dried to form a film, thereby forming a light-emitting functional layer.

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