Ink-jet printing device for producing electronic paper

Abstract

The utility model discloses an ink-jet printing device for producing electronic paper, which comprises a liquid jet head, a liquid supply chamber and a backflow chamber are arranged in the liquid jet head, a plurality of regular hexagon units are arranged on the liquid jet head, each edge of each regular hexagon unit comprises at least two nozzles, each nozzle is communicated with a flow channel, the flow channels are communicated with the liquid supply chamber, and the flow channels are communicated with the backflow chamber. All the nozzles communicate with the backflow chamber. According to the ink-jet printing device for producing the electronic paper, the nozzles are arranged in a regular hexagon manner. According to the regular hexagon arrangement mode, the distance and angle distribution between the adjacent nozzles is more reasonable, mutual interference in the ink droplet jetting process can be effectively reduced, the printing precision and stability are improved, the ink droplets are evenly distributed in a printing area, and the problems of color deviation, pixel missing and the like are avoided. The regular hexagon arrangement also optimizes the ink jet sequence and frequency, thereby significantly improving the printing speed and shortening the production period.

Description

TECHNICAL FIELD

[0001] The utility model belongs to inkjet printing technical field, and specifically relates to inkjet printing device for producing electronic paper. BACKGROUND

[0002] In the field of display device manufacturing, inkjet printing technology is gradually becoming one of the key manufacturing methods in the future. Inkjet printing technology is a non-contact printing method, which sprays specific materials (such as ink) onto the specified position through precise inkjet device to form the required pattern or structure. In display manufacturing, inkjet printing technology can be used to manufacture the light-emitting layer, color filter and other key components of OLED (organic light-emitting diode) display.

[0003] In the electrophoretic electronic paper display device, a specially designed mold is used to press a micro-cup unit array on a whole roll of conductive film, and numerous small micro-cup walls ensure that the electronic paper film has better pressure resistance, structural integrity and mechanical stability. The micro-cup unit separates the electrophoretic liquid into numerous small independent units, effectively preventing the leakage of electrophoretic liquid and the displacement and aggregation of improper colored particles. However, there are still problems such as low precision of the spacing structure and uneven density of the electrophoretic liquid in the existing technology. In the traditional inkjet printing device for producing electronic paper, the arrangement mode of the nozzles has many limitations in printing micro-cup components. The common rectangular or straight-line arrangement of nozzles needs to be improved in terms of printing precision, efficiency and uniformity of ink droplet distribution when printing specific shapes. SUMMARY

[0004] To solve the above technical problems, the utility model adopts the technical scheme of inkjet printing device for producing electronic paper, which comprises a liquid ejection head, a liquid supply chamber and a backflow chamber are arranged in the liquid ejection head, a plurality of regular hexagonal units are arranged on the liquid ejection head, each edge of the regular hexagonal unit comprises at least two nozzles, each nozzle is connected with a flow channel, the flow channels are connected with the liquid supply chamber, and all the nozzles are connected with the backflow chamber.

[0005] As a preferred embodiment of the above technical scheme, the cross section of the nozzle is circular or rectangular.

[0006] As a preferred embodiment of the above technical scheme, the cross section area of the nozzle is less than 100 μm 2 , and the distance between adjacent nozzles on each edge of the regular hexagonal unit is less than or equal to 75 μm.

[0007] As a preferred embodiment of the above technical scheme, the exit angle of the nozzle is less than 15°.

[0008] As a preferred embodiment of the above technical scheme, part or all of the adjacent regular hexagonal units share an edge with at least two nozzles.

[0009] The utility model discloses a beneficial effect is: the utility model discloses a jet printing device for producing electronic paper, and the nozzle adopts the hexagonal arrangement mode. This hexagonal arrangement mode makes the distance and angle distribution between the adjacent nozzle more reasonable, can effectively reduce the mutual interference when ink drop jet, improves the precision and stability of printing, makes the ink drop even distribution in the printing area, avoids the emergence color deviation and pixel missing etc. The hexagonal arrangement has also optimized the sequence and frequency of ink jet, thereby significantly improves the printing speed, shortens the production cycle. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structural schematic diagram of liquid jet head with rectangular nozzle in the prior art;

[0011] Figure 2 It is the structural schematic diagram of liquid jet head with circular nozzle in the prior art;

[0012] Figure 3 It is the structural schematic diagram of liquid jet head with circular nozzle in the utility model;

[0013] Figure 4 It is the structural schematic diagram of liquid jet head with rectangular nozzle in the utility model. DETAILED DESCRIPTION

[0014] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor belong to the scope of protection of the utility model.

[0015] In the description of the utility model, it is necessary to explain that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, construct and operate with a particular orientation, therefore can not be understood as the limitation of the utility model. In addition, the terms "first", "second", "third" are only for the description purpose, and can not be understood as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Inkjet printing equipment used for producing electronic paper, such as Figure 3 and 4 As shown, it includes a liquid injection head, which has a supply chamber and a return chamber. The liquid injection head has several regular hexagonal units 1. Each side of the regular hexagonal unit 1 includes at least two nozzles 2. All nozzles 2 in each regular hexagonal unit 1 are connected to a flow channel, which is connected to the supply chamber. All nozzles 2 are connected to the return chamber.

[0018] Furthermore, the cross-section of the nozzle 2 is circular or rectangular.

[0019] Furthermore, the cross-sectional area of ​​the nozzle 2 is less than 100 μm. 2 The spacing between adjacent nozzles 2 on each side of the regular hexagonal unit 1 is less than or equal to 75 μm.

[0020] Furthermore, the ejection angle of the nozzle 2 is less than 15°.

[0021] Furthermore, some or all of the adjacent regular hexagonal units 1 share a side with at least two nozzles 2.

[0022] This utility model relates to an inkjet printing device for producing electronic paper:

[0023] 1. Significantly improved print quality of the display device's isolation structure. Precise ink droplet distribution is achieved through the hexagonal arrangement of nozzles 2, thereby enhancing the display device's clarity, contrast, and color saturation.

[0024] 2. Significantly improved production efficiency. The optimized nozzle arrangement and inkjet control method shortened printing time, increased output per unit time, and reduced production costs.

[0025] 3. Enhanced stability and reliability of inkjet printing equipment used for electronic paper production. Advanced fluid control technology and printhead design reduce the probability of malfunctions, extend equipment lifespan, and lower maintenance costs.

[0026] 4. It brings new development opportunities to the display manufacturing industry. The application of the present invention can promote the progress of electronic paper display technology and meet the market demand for high-quality and high-performance display products.

[0027] 5. By avoiding physical contact, non-contact printing avoids damage and contamination, reduces potential damage to the substrate, and is particularly suitable for display manufacturing with extremely high surface quality requirements.

[0028] 6. High material utilization: precise control of ink droplet ejection volume, reduced ink waste, and reduced raw material costs.

[0029] 7. Strong flexibility: easy to adjust and change printing parameters, suitable for production of different specifications and types of display devices, and quickly respond to changes in market demand.

[0030] Compared with traditional photolithography, imprinting and existing linear inkjet printing devices for producing electronic paper, it has the characteristics of small angle, high repeat accuracy.

[0031] It is worth mentioning that the control part, nozzle structure and solution flow path of the inkjet device involved in the present utility model patent application should be regarded as prior art. The concentration and specific proportion of the solution, the process parameters for forming the micro-spaced column, the specific structure, working principle and possible control method and spatial arrangement method of these technical features can be selected by using conventional methods in the art, and should not be regarded as the invention point of the present utility model patent. The present utility model patent will not be further expanded and detailed.

[0032] The above describes the preferred embodiments of the present utility model in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present utility model. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the existing technology according to the concept of the present utility model shall be within the protection scope determined by the claims.

Claims

1. An inkjet printing apparatus for producing electronic paper, characterized in that, It includes a liquid injection head, which has a supply chamber and a return chamber. The liquid injection head has several regular hexagonal units, each of which has at least two nozzles on each side. Each nozzle is connected to a flow channel, and all flow channels are connected to the supply chamber. All nozzles are connected to the return chamber.

2. The inkjet printing apparatus for producing electronic paper as described in claim 1, characterized in that, The nozzle has a circular or rectangular cross-section.

3. The inkjet printing apparatus for producing electronic paper as described in claim 1, characterized in that, The cross-sectional area of ​​the nozzle is less than 100 μm. 2 The spacing between adjacent nozzles on each side of a regular hexagonal unit is less than or equal to 75 μm.

4. The inkjet printing apparatus for producing electronic paper as described in claim 1, characterized in that, The nozzle's ejection angle is less than 15°.

5. The inkjet printing apparatus for producing electronic paper as described in claim 1, characterized in that, Some or all of the adjacent regular hexagonal units share a side with at least two nozzles.

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