WO2020134158A1 - 喷墨头 - Google Patents

喷墨头 Download PDF

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Publication number
WO2020134158A1
WO2020134158A1 PCT/CN2019/103917 CN2019103917W WO2020134158A1 WO 2020134158 A1 WO2020134158 A1 WO 2020134158A1 CN 2019103917 W CN2019103917 W CN 2019103917W WO 2020134158 A1 WO2020134158 A1 WO 2020134158A1
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WO
WIPO (PCT)
Prior art keywords
nozzles
ink supply
supply end
main body
row
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/103917
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English (en)
French (fr)
Inventor
李文杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Publication date
Application filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
Publication of WO2020134158A1 publication Critical patent/WO2020134158A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/145—Arrangement thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor

Definitions

  • the present disclosure relates to an inkjet head, and particularly to a rotatable inkjet head.
  • OLED Organic light emitting diode
  • Traditional OLED adopts vacuum evaporation technology, which can achieve quantitative production at present.
  • this technology requires the use of fine masks, resulting in low material utilization.
  • preparing masks for large-size panels is a major challenge.
  • printing display technology ie, inkjet printing technology, Ink jet printing, IJP
  • IJP Ink jet printing
  • FIG. 1 shows a schematic structural diagram of a conventional inkjet device 1.
  • the inkjet device 1 includes an ink bulk 2 and a head block 3, where the inkjet head 3 includes a row of nozzles 4.
  • the ink supply cartridge 2 is used to contain ink, wherein the ink is formed by dissolving (or dispersing) the light-emitting small molecule or polymer material in an organic solvent.
  • the inkjet device 1 drops ink into the pixel-defining area, then removes the solvent by "decompression evaporation", and finally heats the substrate to form a dry film to make an OLED.
  • the existing inkjet device 1 has the following problems: the nozzle 4 of the inkjet head 3 will cause a hole clogging phenomenon during long-term use, which in turn causes abnormal inkjet, such as the ink cannot be ejected, the ink output amount is reduced or The inkjet angle is not equal. If the droplet volume in each pixel is different, it will cause abnormal display of the device screen, so the accuracy of inkjet head 3 inkjet should be strictly controlled.
  • the nozzle 4 of the inkjet head 3 when the nozzle 4 of the inkjet head 3 is clogged, the inkjet head 3 must be removed and replaced. The removed inkjet head can only be discarded or cleaned and reused.
  • cleaning the inkjet head 3 requires It takes a lot of time and cleaning chemicals to increase production costs.
  • the purpose of the present disclosure is to provide an inkjet head which can increase the service life of the inkjet head and avoid the problem of having to replace the inkjet head whenever the nozzle is clogged.
  • an inkjet head including: a main body connected to an ink supply end; and a plurality of nozzles disposed on the main body, and at least one nozzle overlaps the position of the ink supply end and is The ink supply end is in communication, wherein the main body can move relative to the ink supply end about a rotation axis to move the at least one nozzle to not overlap the position of the ink supply end, and move the other nozzle To overlap and communicate with the position of the ink supply end; wherein the main body includes a plurality of concentric rings, and each concentric ring can independently rotate about the rotation axis relative to the ink supply end; wherein each of the concentric rings Of the nozzles are arranged in multiple rows, and the multiple rows of nozzles are arranged to be radially arranged on the concentric ring through the axis of the main body with the rotation axis as the center; wherein one of the main bodies is concentric After rotating an angle relative to the ink
  • the other nozzles are not in communication with the ink supply end.
  • the plurality of nozzles are arranged in multiple rows, and each row of nozzles is arranged to pass through the axis of the main body through the rotation axis.
  • the angle is 30 degrees.
  • the multiple rows of nozzles are arranged at equal angles to each other.
  • the present disclosure also provides an inkjet head including: a main body connected to an ink supply end; and a plurality of nozzles disposed on the main body, and at least one nozzle overlaps the position of the ink supply end and is connected to the ink supply End, wherein the main body is movable relative to the ink supply end to move the at least one nozzle to a position that does not overlap the ink supply end, and to move the other nozzle to the ink supply end Overlapping and connected.
  • the other nozzles are not in communication with the ink supply end.
  • the body rotates relative to the ink supply end about a rotation axis.
  • the plurality of nozzles are arranged in multiple rows, and each row of nozzles is arranged to pass through the axis of the main body through the rotation axis.
  • the ink supply end is switched from corresponding to one row of nozzles to corresponding to another row of nozzles, wherein the The angle is greater than 0 degrees and less than 2 ⁇ .
  • the inkjet head includes six rows of nozzles, and the angle is 30 degrees.
  • the multiple rows of nozzles are arranged at equal angles to each other.
  • the main body includes a plurality of concentric rings, and each concentric ring can independently rotate about the rotation axis relative to the ink supply end.
  • the nozzles on each of the concentric rings are arranged in multiple rows, and the multiple rows of nozzles are arranged radially around the axis of the main body with the rotation axis as the center The concentric ring.
  • the ink supply end moves from a row corresponding to the concentric ring
  • the nozzle is converted to another row of nozzles corresponding to the concentric ring, wherein the angle is greater than 0 degrees and less than 2 ⁇ .
  • the present disclosure uses a plurality of rows of nozzles on the inkjet head and uses only one row of nozzles at a time for spraying operations.
  • this row of nozzles When this row of nozzles is clogged, it can be switched to continue the spraying operation with another row of nozzles without removing and replacing the inkjet head.
  • the service life of the inkjet head can be effectively increased, and the problem of having to replace the inkjet head whenever the nozzle is clogged can be avoided.
  • FIG. 1 shows a schematic structural diagram showing an existing inkjet device
  • FIG. 2 shows a schematic structural view of an inkjet device according to the first preferred embodiment of the present disclosure
  • FIG. 3 shows a bottom view of the inkjet head of the inkjet device of FIG. 2;
  • FIG. 4 shows a schematic diagram of the operation of the inkjet device of FIG. 2;
  • FIG. 5 shows a schematic diagram of the inkjet head of FIG. 3 after rotation
  • FIG. 6 shows a bottom view of an inkjet device according to a second preferred embodiment of the present disclosure.
  • FIG. 7 shows a schematic diagram of the inkjet head of FIG. 6 after rotation.
  • FIG. 2 shows a schematic structural diagram of an inkjet device 10 according to the first preferred embodiment of the present disclosure.
  • the inkjet device 10 includes an inkjet head block 11 and an ink bulk 12.
  • the ink supply cartridge 12 is used to contain ink.
  • the inkjet device 10 of the present disclosure is used to manufacture an organic light-emitting device, and the ink is formed by dissolving (or dispersing) a light-emitting small molecule or polymer material in an organic solvent.
  • the inkjet head 11 and the ink cartridge 12 are assembled together, so that the ink in the ink cartridge 12 can flow into the corresponding channel in the inkjet head 11 and then be ejected through the corresponding nozzle, the specific design of the nozzle will be detailed later .
  • FIG. 3 shows a bottom view of the inkjet head 11 of the inkjet device 10 of FIG. 2.
  • the inkjet head 11 includes a main body 111 and a plurality of nozzles 112.
  • the main body 111 is connected to the ink supply end 13 (dotted line range in FIG. 3).
  • the ink supply end 13 is one of the components for the ink cartridge 12, or another component additionally provided independently, which is not limited thereto.
  • a plurality of nozzles 112 are disposed on the main body 111, and at least one nozzle 112 overlaps the ink supply end 13 and communicates with the ink supply end 13.
  • the plurality of nozzles 112 are arranged in multiple rows, for example, including the first row of nozzles R1 and the second row of nozzles R2.
  • the main body 111 of the inkjet head 11 has an axis O at the center, and each row of nozzles is arranged to pass through the axis O of the main body 111.
  • the inkjet head 11 includes six rows of nozzles, and the six rows of nozzles are arranged at equal angular intervals from each other, that is, each row of nozzles is spaced apart from each other by 30 degrees. In other embodiments, other numbers of rows of nozzle designs may be used, and the angle of the interval may be greater than 0 degrees and less than 2 ⁇ .
  • the positions of the first row of nozzles R1 and the ink supply end 13 overlap so that the nozzles of the first row of nozzles R1 communicate with the ink supply end 13 through the passage of the main body 111. It should be noted that with the exception of the nozzle 112 overlapping the position of the ink supply end 13, the remaining nozzles 112 are not in communication with the ink supply end 13. That is, when the first row of nozzles R1 communicates with the ink supply end 13, neither the second row of nozzles R2 nor the other rows of nozzles communicate with the ink supply end 13.
  • FIG. 4 shows a schematic diagram of the operation of the inkjet device 10 of FIG. 2.
  • the inkjet device 10 performs the spraying operation in a horizontal and horizontal manner, that is, the inkjet device 10 moves along the horizontal direction A, where the horizontal direction A is perpendicular to the arrangement direction of the first row of nozzles R1 corresponding to the ink supply end 13.
  • the ink in the ink cartridge 12 flows into the corresponding channel in the inkjet head 11 through the ink supply end 13, and then the ink is ejected from the corresponding first row of nozzles R1.
  • M rows of parallel ink can be ejected through the first row of nozzles R1, where M is equal to the number of nozzles 112 of the first row of nozzles R1.
  • the main body 111 of the inkjet head 11 can be moved relative to the ink supply end 13 to move the first row of nozzles R1 not to overlap the position of the ink supply end 13 and to move the second row of nozzles R2 to the ink supply
  • the positions of the ends 13 overlap so that the nozzles of the second row of nozzles R2 communicate with the ink supply end 13 through the passage of the main body 111.
  • FIG. 5 shows a schematic diagram of the inkjet head of FIG. 3 after rotation.
  • the main body 111 of the inkjet head 11 is rotatable relative to the ink supply end 13 about a rotation axis C (shown in FIG. 2) passing through the axis O. After the rotation angle ⁇ 1 , the ink supply end 13 is switched from corresponding to the first row of nozzles R1 to corresponding to the second row of nozzles R2.
  • the inkjet head 11 includes six rows of nozzles, and the six rows of nozzles are arranged at an interval of 30 degrees from each other, so the above-mentioned rotation ⁇ 1 is 30 degrees.
  • the angle of rotation may be greater than 0 degrees and less than 2 ⁇ .
  • the ink supply end 13 corresponds to the second row of nozzles R2.
  • the second row of nozzles R2 communicates with the ink supply end 13
  • neither the first row of nozzles R1 nor the other rows of nozzles communicate with the ink supply end 13.
  • the distance between the two adjacent nozzles 112 of the first row of nozzles R1 is equal to the distance between the two adjacent nozzles 112 of the second row of nozzles R2, so the pattern sprayed by the second row of nozzles R2 will be the same as the first row of nozzles R1 The pattern is consistent.
  • FIG. 6 shows a bottom view of an inkjet head 21 of an inkjet device according to a second preferred embodiment of the present disclosure
  • FIG. 7 shows a schematic view of the inkjet head 21 of FIG. 6 after rotation .
  • the structure of the inkjet device of the second preferred embodiment of the present disclosure is similar to that of the inkjet device 10 of the first preferred embodiment of the present disclosure, and the same features of the two are not repeated here.
  • the inkjet device of the second preferred embodiment differs from the inkjet device 10 of the first preferred embodiment in that the inkjet head 21 of the inkjet device of the second preferred embodiment includes a main body 211 and a plurality of nozzles 212.
  • a plurality of nozzles 212 are disposed on the main body 211, and at least one nozzle 212 overlaps the ink supply end 23 and communicates with the ink supply end 23.
  • the main body 211 includes a plurality of concentric rings N1, N2, and N3.
  • the nozzles 212 on each of the concentric rings N1, N2, and N3 are arranged in multiple rows, and the multiple rows of nozzles are arranged to be radially arranged on the concentric rings N1, N2, and N3 through the axis O of the main body 211 with the rotation axis as the center.
  • the second concentric ring N2 includes a first row of nozzles R1, a second row of nozzles R2, a seventh row of nozzles R7, an eighth row of nozzles R8, and twelve rows of nozzles.
  • the twelve rows of nozzles are arranged at equal angular intervals from each other, that is, each row of nozzles is spaced 30 degrees from each other. In other embodiments, other numbers of rows of nozzle designs may be used, and the angle of the interval may be greater than 0 degrees and less than 2 ⁇ .
  • the positions of the first row of nozzles R1 and the seventh row of nozzles R7 overlap with the ink supply end 23 such that the nozzles of the first row of nozzles R1 and the seventh row of nozzles R7 are connected to the ink supply end 23 through the passage of the body 211 through. It should be noted that, except for the nozzle 212 that overlaps the position of the ink supply end 23, the remaining nozzles 212 are not in communication with the ink supply end 23.
  • FIG. 7 shows a schematic diagram of the inkjet head 21 of FIG. 6 after rotation.
  • Each concentric ring N1, N2, N3 of the main body 211 of the inkjet head 21 can independently rotate about the rotation axis relative to the ink supply end 23.
  • the ink supply end 23 starts from the first row of nozzles R1 and the seventh row corresponding to the concentric ring N2.
  • Row nozzle R7 is converted to correspond to second row nozzle R2 and eighth row nozzle R8.
  • the concentric ring N2 includes twelve rows of nozzles, and the twelve rows of nozzles are arranged at an interval of 30 degrees from each other. Therefore, the above-mentioned rotation ⁇ 2 is 30 degrees. In other embodiments, the angle of rotation may be greater than 0 degrees and less than 2 ⁇ .
  • the ink supply end 23 corresponds to the second row of nozzles R2 and the eighth row of nozzles R8.
  • the second row of nozzles R2 and the eighth row of nozzles R8 communicate with the ink supply end 23
  • the first row of nozzles R1 and the seventh row of nozzles R7 and the other rows of nozzles do not communicate with the ink supply end 23.
  • the distance between two adjacent nozzles of each row of nozzles is the same, so the pattern sprayed by the rotating inkjet head 21 will be consistent.
  • the main body 211 of the inkjet head 21 by designing the main body 211 of the inkjet head 21 to include a plurality of concentric rings N1, N2, N3, and each concentric ring N1, N2, N3 can independently oppose the ink around the rotation axis
  • the supply end 23 rotates. Therefore, when there is a clogged nozzle 213 on the first concentric ring N1, it is only necessary to rotate the first concentric ring N1 relative to the ink supply end 23, and the other concentric rings N2 and N3 remain stationary, thereby improving the inkjet more effectively The life of the head.
  • the present disclosure provides a plurality of rows of nozzles on the inkjet head and uses only one row of nozzles at a time for spraying operations.
  • this row of nozzles When this row of nozzles is clogged, it can be switched to continue the spraying operation with another row of nozzles without removing and replacing the inkjet head.
  • the service life of the inkjet head can be effectively increased, and the problem of having to replace the inkjet head whenever the nozzle is clogged can be avoided.

Landscapes

  • Ink Jet (AREA)
  • Coating Apparatus (AREA)

Abstract

一种喷墨头（11），包含：与墨水供应端（13）连接的主体（111）和设置在主体（111）上的多个喷嘴（112），并且至少一喷嘴（112）与墨水供应端（13）的位置重叠且相连通，其中主体（111）可相对墨水供应端（13）移动，以将至少一喷嘴（112）移动至不与墨水供应端（13）的位置重叠，以及将另一喷嘴移动至与墨水供应端（13）的位置重叠且相连通。该喷墨头使用寿命长，还可以避免喷嘴堵塞时必须更换喷墨头的问题。

Description

喷墨头 技术领域
本揭示涉及一种喷墨头，特别是涉及一种可旋转的喷墨头。
 背景技术
有机发光二极管(Organic Light Emitting Diode，OLED)器件以其良好的自发光特性、高对比度、快速响应以及柔性显示等优势，得到了广泛的应用。传统的OLED采用真空蒸镀技术，目前可实现量化生产。但是该技术需要采用精细掩模板，导致材料利用率低。另外，制备用于大尺寸面板的掩模板是一大挑战。近年来，印刷显示技术(即喷墨打印技术，Ink jet printing，IJP)发展迅速。喷墨打印具有材料利用率高和设备价格低等优点，是OLED实现大尺寸以及低成本生产的最佳途径。
喷墨打印技术中，喷墨头的设计最为重要。请参照图1，其显示现有的喷墨装置1的结构示意图。喷墨装置1包含供墨盒(ink bulk)2和喷墨头(head block)3，其中喷墨头3包含一排喷嘴(nozzles)4。供墨盒2是用于承装墨水，其中墨水是通过将发光的小分子或者聚合物材料溶解(或者分散于)有机溶剂中而形成。喷墨装置1将墨水滴入像素限定区，接着通过“减压蒸发”的方式除去溶剂，最后加热基板形成干膜，以制成OLED。
然而，现有的喷墨装置1存在下列问题：喷墨头3的喷嘴4在长时间使用过程中会造成堵孔的现象，进而引发喷墨异常，比如喷不出墨、出墨量减少或者喷墨角度不正等。如果每个像素内液滴体积不一样，则会造成器件画面显示异常，因此要严格控制喷墨头3喷墨的准确性。在现有技术中，当喷墨头3的喷嘴4堵塞时必须将喷墨头3取下换新，取下的喷墨头只可选择丢弃或者是清洗再利用，然而清洗喷墨头3需耗费大量的时间和清洗药液，进而提高生产成本。
有鉴于此，有必要提出一种喷墨头，以解决现有技术中存在的问题。
 技术问题
为解决上述现有技术的问题，本揭示的目的在于提供一种喷墨头，其可提高喷墨头的使用寿命，避免每当出现喷嘴堵塞时就必须更换喷墨头的问题。
 技术解决方案
为达成上述目的，本揭示提供一种喷墨头，包含：主体，与墨水供应端连接；以及多个喷嘴，设置在所述主体上，并且至少一喷嘴与所述墨水供应端的位置重叠且与所述墨水供应端相连通，其中所述主体可绕着旋转轴相对所述墨水供应端移动，以将所述至少一喷嘴移动至不与所述墨水供应端的位置重叠，以及将另一喷嘴移动至与所述墨水供应端的位置重叠且相连通；其中所述主体包含多个同心环，且每个同心环可独立绕着旋转轴相对所述墨水供应端转动；其中每一所述同心环上的所述喷嘴排列为多排，且多排喷嘴设置为以所述旋转轴为中心穿过所述主体的轴心放射排列在所述同心环上；其中所述主体的其中之一所述同心环绕着旋转轴相对所述墨水供应端转动一角度后，所述墨水供应端从对应所述同心环的其中一排喷嘴转换为对应所述同心环的另一排喷嘴，其中所述角度大于0度且小于2π。
本揭示其中之一优选实施例中，除了与所述墨水供应端的位置重叠的喷嘴之外，其余喷嘴皆不与所述墨水供应端相连通。
本揭示其中之一优选实施例中，所述多个喷嘴排列为多排，且每排喷嘴设置为通过所述旋转轴穿过所述主体的轴心。
本揭示其中之一优选实施例中，所述角度为30度。
本揭示其中之一优选实施例中，所述多排喷嘴彼此等角度相隔排列。
本揭示还提供一种喷墨头，包含：主体，与墨水供应端连接；以及多个喷嘴，设置在所述主体上，并且至少一喷嘴与所述墨水供应端的位置重叠且与所述墨水供应端相连通，其中所述主体可相对所述墨水供应端移动，以将所述至少一喷嘴移动至不与所述墨水供应端的位置重叠，以及将另一喷嘴移动至与所述墨水供应端的位置重叠且相连通。
本揭示其中之一优选实施例中，除了与所述墨水供应端的位置重叠的喷嘴之外，其余喷嘴皆不与所述墨水供应端相连通。
本揭示其中之一优选实施例中，所述主体绕着旋转轴相对所述墨水供应端转动。
本揭示其中之一优选实施例中，所述多个喷嘴排列为多排，且每排喷嘴设置为通过所述旋转轴穿过所述主体的轴心。
本揭示其中之一优选实施例中，所述主体绕着旋转轴相对所述墨水供应端转动一角度后，所述墨水供应端从对应其中一排喷嘴转换为对应另一排喷嘴，其中所述角度大于0度且小于2π。
本揭示其中之一优选实施例中，所述喷墨头包含六排喷嘴，以及所述角度为30度。
本揭示其中之一优选实施例中，所述多排喷嘴彼此等角度相隔排列。
本揭示其中之一优选实施例中，所述主体包含多个同心环，且每个同心环可独立绕着所述旋转轴相对所述墨水供应端转动。
本揭示其中之一优选实施例中，每一所述同心环上的所述喷嘴排列为多排，且多排喷嘴设置为以所述旋转轴为中心穿过所述主体的轴心放射排列在所述同心环上。
本揭示其中之一优选实施例中，所述主体的其中之一所述同心环绕着旋转轴相对所述墨水供应端转动一角度后，所述墨水供应端从对应所述同心环的其中一排喷嘴转换为对应所述同心环的另一排喷嘴，其中所述角度大于0度且小于2π。
 有益效果
相较于先前技术，本揭示通过在喷墨头上设置多排喷嘴，并且一次只使用一排喷嘴进行喷涂作业。当该排喷嘴堵塞时可转换成以另一排喷嘴继续执行喷涂作业而不需将喷墨头拆除和更换。藉此设计，可有效地提高喷墨头的使用寿命，避免每当出现喷嘴堵塞时就必须更换喷墨头的问题。
 附图说明
图1显示一种显示现有的喷墨装置的结构示意图；
图2显示一种根据本揭示第一优选实施例的喷墨装置的结构示意图；
图3显示图2的喷墨装置的喷墨头的仰视图；
图4显示图2的喷墨装置的工作示意图；
图5显示图3的喷墨头的旋转后的示意图；
图6显示一种根据本揭示第二优选实施例的喷墨装置的仰视图；以及
图7显示图6的喷墨头的旋转后的示意图。
 本发明的实施方式
为了让本揭示的上述及其他目的、特征、优点能更明显易懂，下文将特举本揭示优选实施例，并配合所附图式，作详细说明如下。
请参照图2，其显示一种根据本揭示第一优选实施例的喷墨装置10的结构示意图。喷墨装置10包含喷墨头(head block)11和供墨盒(ink bulk)12。供墨盒12是用于承装墨水。优选地，本揭示的喷墨装置10是用于制造有机发光器件，并且墨水是通过将发光的小分子或者聚合物材料溶解(或者分散于)有机溶剂中而形成。喷墨头11与供墨盒12组装在一起，如此，供墨盒12内的墨水可流入喷墨头11内对应的通道，接着再经由对应的喷嘴喷出，其中喷嘴的具体设计将于后详述。
请参照图3，其显示图2的喷墨装置10的喷墨头11的仰视图。喷墨头11包含主体111和多个喷嘴112。主体111与墨水供应端13(图3的虚线范围)连接。可选地，墨水供应端13为供墨盒12的其中一个元件，或者是额外独立设置的另一元件，不局限于此。多个喷嘴112设置在主体111上，并且至少一喷嘴112与墨水供应端13的位置重叠且与墨水供应端13相连通。在本实施例中，多个喷嘴112以多排的形式排列，例如包含第一排喷嘴R1和第二排喷嘴R2。
如图3所示，喷墨头11的主体111在中央位置具有一轴心O，且每排喷嘴皆设置为通过主体111的轴心O。在本实施例中，喷墨头11包含六排喷嘴，且六排喷嘴彼此等角度间隔排列，也就是说，每排喷嘴彼此间隔30度。在其他实施例中，可以采用其他数量排的喷嘴设计，并且间隔的角度可为大于0度且小于2π。
如图3所示，第一排喷嘴R1与墨水供应端13的位置重叠，使得第一排喷嘴R1嘴通过主体111的通道与墨水供应端13相连通。应当注意的是，除了与墨水供应端13的位置重叠的喷嘴112之外，其余喷嘴112皆不与墨水供应端13相连通。也就是说，当第一排喷嘴R1与墨水供应端13相连通时，第二排喷嘴R2和其他排喷嘴皆不与墨水供应端13连通。
请参照图4，其显示图2的喷墨装置10的工作示意图。喷墨装置10会以水平横移的方式进行喷涂作业，即，喷墨装置10沿着水平方向A移动，其中水平方向A垂直于与墨水供应端13对应的第一排喷嘴R1的排列方向。使用时，供墨盒12内的墨水通过墨水供应端13流入喷墨头11内对应的通道，接着墨水从对应的第一排喷嘴R1喷出。如此，通过第一排喷嘴R1可喷出M排平行的墨水，其中M等于第一排喷嘴R1的喷嘴112数量。
在本揭示中，喷墨头11的主体111可相对墨水供应端13移动以将第一排喷嘴R1移动至不与墨水供应端13的位置重叠，以及将第二排喷嘴R2移动至与墨水供应端13的位置重叠，使得第二排喷嘴R2嘴通过主体111的通道与墨水供应端13相连通。具体来说，请参照图5，其显示图3的喷墨头的旋转后的示意图。
喷墨头11的主体111可绕着通过轴心O的旋转轴C(如图2所示)相对墨水供应端13转动。当转动角度 θ1后，墨水供应端13从对应第一排喷嘴R1转换为对应第二排喷嘴R2。在本实施例中，喷墨头11包含六排喷嘴，且六排喷嘴彼此相隔30度间隔排列，因此，上述转动的 θ1为30度。在其他实施例中，转动的角度可为大于0度且小于2π。
如图5所示，喷墨头11转动 θ1后，墨水供应端13对应第二排喷嘴R2。当第二排喷嘴R2与墨水供应端13相连通时，第一排喷嘴R1和其他排喷嘴皆不与墨水供应端13连通。藉此设计，当第一排喷嘴R1具有堵塞的喷嘴113时，只需将喷墨头11旋转特定角度后，即可转换成以整排皆未堵塞的第二排喷嘴R2进行喷墨作业。优选地，第一排喷嘴R1的相邻两喷嘴112的间距等于所述第二排喷嘴R2的相邻两喷嘴112的间距，因此第二排喷嘴R2喷涂出来的图案会与第一排喷嘴R1的图案一致。
请参照图6和图7，图6显示一种根据本揭示第二优选实施例的喷墨装置的喷墨头21的仰视图，以及图7显示图6的喷墨头21的旋转后的示意图。本揭示第二优选实施例的喷墨装置的结构相似于本揭示第一优选实施例的喷墨装置10，两者相同的特征在此不加以赘述。第二优选实施例的喷墨装置与第一优选实施例的喷墨装置10的差别在于，第二优选实施例的喷墨装置的喷墨头21包含主体211和多个喷嘴212。多个喷嘴212设置在主体211上，并且至少一喷嘴212与墨水供应端23的位置重叠且与墨水供应端23相连通。
如图6所示，主体211包含多个同心环N1、N2、N3。每一同心环N1、N2、N3上的喷嘴212排列为多排，且多排喷嘴设置为以旋转轴为中心穿过主体211的轴心O放射排列在同心环N1、N2、N3上。举例来说，第二个同心环N2包含第一排喷嘴R1、第二排喷嘴R2、第七排喷嘴R7、第八排喷嘴R8、等十二排喷嘴。十二排喷嘴彼此等角度间隔排列，也就是说，每排喷嘴彼此间隔30度。在其他实施例中，可以采用其他数量排的喷嘴设计，并且间隔的角度可为大于0度且小于2π。
如图6所示，第一排喷嘴R1和第七排喷嘴R7与墨水供应端23的位置重叠，使得第一排喷嘴R1和第七排喷嘴R7嘴通过主体211的通道与墨水供应端23相连通。应当注意的是，除了与墨水供应端23的位置重叠的喷嘴212之外，其余喷嘴212皆不与墨水供应端23相连通。也就是说，当第一排喷嘴R1和第七排喷嘴R7与墨水供应端23相连通时，第二排喷嘴R2和第八排喷嘴R8等其他排喷嘴皆不与墨水供应端23连通。
请参照图7，其显示图6的喷墨头21的旋转后的示意图。喷墨头21的主体211的每个同心环N1、N2、N3可独立绕着旋转轴相对墨水供应端23转动。举例来说，当第二个同心环N2绕着通过轴心O的旋转轴相对墨水供应端23转动 θ2后，所述墨水供应端23从对应同心环N2的第一排喷嘴R1和第七排喷嘴R7转换为对应第二排喷嘴R2和第八排喷嘴R8。在本实施例中，同心环N2包含十二排喷嘴，且十二排喷嘴彼此相隔30度间隔排列，因此，上述转动的 θ2为30度。在其他实施例中，转动的角度可为大于0度且小于2π。
如图7所示，喷墨头21转动 θ2后，墨水供应端23对应第二排喷嘴R2和第八排喷嘴R8。当第二排喷嘴R2和第八排喷嘴R8与墨水供应端23相连通时，第一排喷嘴R1和第七排喷嘴R7和其他排喷嘴皆不与墨水供应端23连通。藉此设计，当第一排喷嘴R1和第七排喷嘴R7具有堵塞的喷嘴213时，只需将喷墨头21旋转特定角度后，即可转换成以整排皆未堵塞的第二排喷嘴R2进行喷墨作业。优选地，每排喷嘴的相邻两喷嘴的间距相同，因此旋转后的喷墨头21喷涂出来的图案会与一致。
在本揭示的第二实施例中，通过将喷墨头21的主体211设计为包含多个同心环N1、N2、N3，且每个同心环N1、N2、N3可独立绕着旋转轴相对墨水供应端23转动。因此，当第一个同心环N1上有堵塞的喷嘴213时，只需要将第一个同心环N1相对墨水供应端23转动，其他同心环N2和N3保持不动，进而更加有效地提高喷墨头的使用寿命。
综上所述，本揭示通过在喷墨头上设置多排喷嘴，并且一次只使用一排喷嘴进行喷涂作业。当该排喷嘴堵塞时可转换成以另一排喷嘴继续执行喷涂作业而不需将喷墨头拆除和替换。藉此设计，可有效地提高喷墨头的使用寿命，避免每当出现喷嘴堵塞时就必须更换喷墨头的问题。
以上仅是本揭示的优选实施方式，应当指出，对于所属领域技术人员，在不脱离本揭示原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本揭示的保护范围。

Claims (15)

  1. 一种喷墨头，包含：
    主体，与墨水供应端连接；以及
    多个喷嘴，设置在所述主体上，并且至少一喷嘴与所述墨水供应端的位置重叠且与所述墨水供应端相连通，其中所述主体可绕着旋转轴相对所述墨水供应端移动，以将所述至少一喷嘴移动至不与所述墨水供应端的位置重叠，以及将另一喷嘴移动至与所述墨水供应端的位置重叠且相连通；
    其中所述主体包含多个同心环，且每个同心环可独立绕着旋转轴相对所述墨水供应端转动；
    其中每一所述同心环上的所述喷嘴排列为多排，且多排喷嘴设置为以所述旋转轴为中心穿过所述主体的轴心放射排列在所述同心环上；
    其中所述主体的其中之一所述同心环绕着旋转轴相对所述墨水供应端转动一角度后，所述墨水供应端从对应所述同心环的其中一排喷嘴转换为对应所述同心环的另一排喷嘴，其中所述角度大于0度且小于2π。
  2. 如权利要求1的喷墨头，其中除了与所述墨水供应端的位置重叠的喷嘴之外，其余喷嘴皆不与所述墨水供应端相连通。
  3. 如权利要求1的喷墨头，其中所述多个喷嘴排列为多排，且每排喷嘴设置为通过所述旋转轴穿过所述主体的轴心。
  4. 如权利要求1的喷墨头，其中所述角度为30度。
  5. 如权利要求1的喷墨头，其中所述多排喷嘴彼此等角度相隔排列。
  6. 一种喷墨头，包含：
    主体，与墨水供应端连接；以及
    多个喷嘴，设置在所述主体上，并且至少一喷嘴与所述墨水供应端的位置重叠且与所述墨水供应端相连通，其中所述主体可相对所述墨水供应端移动，以将所述至少一喷嘴移动至不与所述墨水供应端的位置重叠，以及将另一喷嘴移动至与所述墨水供应端的位置重叠且相连通。
  7. 如权利要求6的喷墨头，其中除了与所述墨水供应端的位置重叠的喷嘴之外，其余喷嘴皆不与所述墨水供应端相连通。
  8. 如权利要求6的喷墨头，其中所述主体绕着旋转轴相对所述墨水供应端转动。
  9. 如权利要求8的喷墨头，其中所述多个喷嘴排列为多排，且每排喷嘴设置为通过所述旋转轴穿过所述主体的轴心。
  10. 如权利要求9的喷墨头，其中所述主体绕着旋转轴相对所述墨水供应端转动一角度后，所述墨水供应端从对应其中一排喷嘴转换为对应另一排喷嘴，其中所述角度大于0度且小于2π。
  11. 如权利要求10的喷墨头，其中所述喷墨头包含六排喷嘴，以及所述角度为30度。
  12. 如权利要求9的喷墨头，其中所述多排喷嘴彼此等角度相隔排列。
  13. 如权利要求8的喷墨头，其中所述主体包含多个同心环，且每个同心环可独立绕着所述旋转轴相对所述墨水供应端转动。
  14. 如权利要求13的喷墨头，其中每一所述同心环上的所述喷嘴排列为多排，且多排喷嘴设置为以所述旋转轴为中心穿过所述主体的轴心放射排列在所述同心环上。
  15. 如权利要求13的喷墨头，其中所述主体的其中之一所述同心环绕着旋转轴相对所述墨水供应端转动一角度后，所述墨水供应端从对应所述同心环的其中一排喷嘴转换为对应所述同心环的另一排喷嘴，其中所述角度大于0度且小于2π。
PCT/CN2019/103917 2018-12-25 2019-09-02 喷墨头 Ceased WO2020134158A1 (zh)

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