KR20170001354A - Ink-jet unit - Google Patents

Ink-jet unit Download PDF

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Publication number
KR20170001354A
KR20170001354A KR1020150091218A KR20150091218A KR20170001354A KR 20170001354 A KR20170001354 A KR 20170001354A KR 1020150091218 A KR1020150091218 A KR 1020150091218A KR 20150091218 A KR20150091218 A KR 20150091218A KR 20170001354 A KR20170001354 A KR 20170001354A
Authority
KR
South Korea
Prior art keywords
substrate
height
nozzle
unit
ink
Prior art date
Application number
KR1020150091218A
Other languages
Korean (ko)
Inventor
김수연
Original Assignee
주식회사 선익시스템
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 주식회사 선익시스템 filed Critical 주식회사 선익시스템
Priority to KR1020150091218A priority Critical patent/KR20170001354A/en
Publication of KR20170001354A publication Critical patent/KR20170001354A/en

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Classifications

    • H01L51/0005—
    • 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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • 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
    • B41J2/07—Ink jet characterised by jet control
    • 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
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • 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
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs

Abstract

According to an aspect of the present invention, there is provided an inkjet unit for ejecting ink onto a substrate, the inkjet unit comprising: a bracket positioned at an upper portion of the substrate and moving relative to the substrate; A plurality of holders respectively coupled to the brackets to move up and down; A plurality of nozzles including a nozzle body supported by the holder and a nozzle tip coupled to the nozzle body for ejecting the ink toward the substrate; And a position controller for adjusting the height of the holder.

Description

Inkjet unit {INK-JET UNIT}

The present invention relates to an inkjet unit. More specifically, the present invention relates to an inkjet unit for individually controlling the height of a nozzle of an inkjet unit so that ink can be ejected from the nozzle at the same height.

2. Description of the Related Art Flat panel displays such as a liquid crystal display (LCD), a plasma display panel (PDP) and an organic light emitting diode (OLED) are widely used as display devices have. A method has been proposed in which an organic layer is formed by discharging an ink containing an organic material toward a substrate to form pixels of a flat panel display element. As a method of forming an organic layer using ink, a method of disposing a nozzle 10 on an upper part of a substrate 1, ejecting ink through a nozzle 10, and printing on the substrate 1 is used (see FIG. 1).

In the case of the printing method using the nozzle 10, a plurality of nozzles 10 are provided in the bracket 30 to shorten the processing time. However, since the plurality of nozzles 10 are coupled to one bracket 30, the joining heights of the nozzles 10 may be different due to a machining error of the nozzle 10 or the like. When the plurality of nozzles 10 have different heights, the ejection heights of the inks are different from each other, so that the ink can not be deposited at the correct position.

Korean Registered Patent No. 10-0858820 (Registered on Mar. 10, 2008)

The present invention relates to an ink jet unit for individually controlling the height of a nozzle of an ink jet unit so that ink can be ejected from the nozzle at the same height.

According to an aspect of the present invention, there is provided an inkjet unit for ejecting ink onto a substrate, the inkjet unit comprising: a bracket positioned at an upper portion of the substrate and moving relative to the substrate; A plurality of holders respectively coupled to the brackets to move up and down; A plurality of nozzles including a nozzle body supported by the holder and a nozzle tip coupled to the nozzle body for ejecting the ink toward the substrate; And a position controller for adjusting the height of the holder.

The position control unit may include an actuator for moving the plurality of holders up and down.

The plurality of nozzles may be linearly arranged with an inclination with respect to a moving direction of the bracket.

And a height measuring unit for measuring a height of a tip of the nozzle tip, wherein the position controller can adjust a height of the nozzle according to a height of the nozzle tip measured by the height measuring unit.

The height measuring unit may include a light emitting unit that emits light in parallel to the substrate and a light receiving unit that receives light emitted from the light emitting unit and measures the height of the nozzle tip according to whether the light is received by the light receiving unit .

The height measuring unit may be coupled to the bracket so as to move in parallel with the substrate.

According to the embodiment of the present invention, the heights of the nozzles of the ink-jet unit can be individually controlled, so that the ink can be ejected from the nozzles at the same height.

1 is a schematic view of a conventional inkjet unit.
2 is a front view of an inkjet unit according to an embodiment of the present invention.
3 is a side view of an inkjet unit according to an embodiment of the present invention.
FIG. 4 is a schematic view showing the arrangement of nozzles of an inkjet unit according to an embodiment of the present invention.
5 is a schematic view of an inkjet unit according to a modification of the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, an inkjet unit according to the present invention will be described in detail with reference to the accompanying drawings. Referring to the accompanying drawings, the same or corresponding elements are denoted by the same reference numerals, It will be omitted.

FIG. 2 is a front view of an inkjet unit according to an embodiment of the present invention, and FIG. 3 is a side view of an inkjet unit according to an embodiment of the present invention.

2 and 3 show the substrate 1, the stage 3, the nozzles 100, 100a, 100b, 100c, 100d, 100e and 100f, the nozzle body 110, the nozzle tip 120, And a guide bar 450. The guide bar 450 includes a holder 300, a position controller 400, a support 410, an actuator 420, a screw shaft 430, a nut 440, a guide housing 450, Are shown.

The inkjet unit according to the present embodiment is an inkjet unit for ejecting ink onto a substrate 1, which is a bracket 300 positioned on the substrate 1 and moving relative to the substrate 1; A plurality of holders (200) respectively coupled to the brackets (300) so as to move up and down; A nozzle body 110 supported by a holder 200 and a plurality of nozzles 100 coupled to the nozzle body 110 and including a nozzle tip 120 for ejecting ink toward the substrate 1; And a position control unit 400 that adjusts the height of the holder 200. The height of the nozzles 100 can be individually controlled to eject the ink at the same height

The substrate 1 is placed on the stage 3 and can be located inside a process chamber (not shown).

The bracket 300 is located on the top of the substrate 1 and moves relative to the substrate 1. [ The bracket 300 is coupled with a plurality of holders 200 to be described later, and moves relative to the substrate 1. Specifically, as the bracket 300 is coupled to a gantry (not shown) to move the gantry, it is also possible for the bracket 300 to move relative to the substrate 1, It is also possible for the bracket 300 to move relative to the substrate 1 as the stage 3 is moved in a state where the stage 3 is disposed on the stage 3. [

Although the bracket 300 is formed in a plate shape to couple a plurality of holders 200 in the present embodiment, various forms are possible as long as the holder 200 is coupled and supported.

The holder 200 may be coupled to the bracket 300 in a plurality of ways, and each holder 200 may be coupled to the bracket 300 so that the bracket 300 is independently controlled. Specifically, the holder 200 may include a coupling plate 210 and a clamp 230. The coupling plate 210 is movably coupled to the bracket 300 by a position control unit 400 to be described later. The clamp 230 protrudes from one surface of the coupling plate 210 and clamps the nozzle body 110 by clamping the nozzle body 110 to be described later. The clamp 230 may be vertically spaced apart from the nozzle body 110 in order to stably clamp the nozzle body 110.

The nozzle 100 is supported by a plurality of the holders 200 so as to face the substrate 1 and ejects ink toward the substrate 1. [ The nozzle 100 includes a nozzle body 110 supported by a holder 200 and a nozzle tip 120 coupled to the nozzle body 110. The nozzle body 110 may be formed in a circular cylindrical shape, and an ink tube (not shown) in which ink flows may be provided. The nozzle body 110 is fixed by the clamp 230 and is coupled to the holder 200. The nozzle tip 120 is formed to face the substrate 1 at one end of the nozzle body 110 and ink flowing through the ink tube (not shown) is injected into the substrate 10 through the nozzle tip 120 .

The position controller 400 is connected to the holder 200 to adjust the height of the holder 200. Specifically, the position controller 400 may include a support 410, an actuator 420, a screw shaft 430, a nut 440, a guide housing 450, and a guide bar 460. The support portion 410 may be coupled to the bracket 300 to support the actuator 420 and the guide bar 460. The actuator 420 may be a motor, and the screw shaft 430 is coupled to the rotation shaft, and the screw shaft 430 rotates in accordance with the rotation of the rotation shaft. The nut 440 is coupled to the screw shaft 430 and the guide housing 450 is coupled to one side of the nut 440. The guide bar 460 is inserted into the guide housing 450 and guides the linear movement of the guide housing 450. As the screw shaft 430 rotates, the nut 440 and the guide housing 450 ascend and descend, and the holder 200 coupled to the guide housing 450 moves up and down. The position control unit 400 controls the plurality of holders 200 so that the plurality of holders 200 are lifted and lowered, respectively.

In this manner, the heights of the plurality of holders 200 are individually controlled so that the height of the tip 123 of the nozzle tip is the same, so that the ink is ejected at the same height to perform accurate printing.

4, the plurality of nozzles 100 of the inkjet unit according to the present embodiment may be linearly arranged with a slope with respect to the moving direction of the bracket 300 (indicated by a dot-dash line in FIG. 4) have. Referring to FIG. 1, a conventional inkjet unit has a plurality of nozzles 10 arranged in a row on one bracket 30. In this case, since the distance between the nozzle tips is widened due to the volume of the nozzle 10, the spacing of the ink to be ejected is widened, which makes it difficult to perform detailed printing. In this embodiment, the nozzles 100 may be arranged diagonally to narrow the distance between the nozzle tips 120. Specifically, instead of providing the nozzles 10 in a line on one bracket 30 as in the conventional inkjet unit, the nozzles 100 may be provided in the plurality of the holders 200, Are arranged in the bracket 300 in a diagonal direction with respect to the substrate 1 so as to overlap little by little (see FIG. 2). The nozzle 100 fixed to the holder 200 is obliquely arranged with respect to the moving direction of the substrate 1 so as to be obliquely arranged. In this embodiment, three nozzles 100a, 100b and 100c among the six nozzles 100a, 100b, 100c, 100d, 100e and 100f are arranged diagonally, and the other three nozzles 100d, Is arranged so as to be parallel to the diagonal direction formed by the three preceding nozzles 100a, 100b, and 100c. By arranging the plurality of nozzles 100 in a diagonal line, the distance between the nozzle tips 120 can be narrowed, and fine ink printing is possible. In addition, since the interval between the nozzles 100 is reduced, the size of the bracket 300 can be reduced, and the inkjet unit can be downsized.

Referring to FIG. 5, the inkjet unit according to the modification of this embodiment may further include a height measuring unit 500 for measuring the height of the tip 123 of the nozzle tip. The height measuring unit 500 measures the height of the tip 123 of the nozzle tip and the position controller 400 adjusts the height of the holder 200 according to the measured height of the tip 123 of the nozzle tip The height of all the nozzles 100 is made equal so that the ink is discharged at the same height.

The height measuring unit 500 may include a light emitting unit 510 for emitting light in parallel with the substrate 1 and a light receiving unit 530 for receiving light emitted from the light emitting unit 510. The light emitting unit 510 emits light toward the light receiving unit 530 with the nozzle 100 interposed therebetween. The light receiving unit 530 receives the light irradiated by the light emitting unit 510, The height of the nozzle tip 120 is measured according to whether or not light is received. 5, when the light emitted from the light emitting unit 510 toward the nozzle tip 120 is received by the light receiving unit 530, the nozzle 100a is not positioned at a desired height by the user. Therefore, 400 is used to lower the holder 200. The nozzle 100a is lowered as the holder 200 is lowered and the nozzle tip 120 cuts off the light emitted from the light emitting portion 510 as the nozzle 100a descends so that light is emitted to the light receiving portion 530 It is determined that the nozzle 100a is positioned at a desired height by the user. The plurality of nozzles 100a, 100b, 100c, 100d, 100e and 100f can be positioned at the same height by repeating this process on the other nozzles 100b, 100c, 100d, 100e and 100f.

The height measurement unit 500 of the inkjet unit according to the present embodiment is provided as many as the number of the nozzles 100 to measure the height of each nozzle 100 or to move in parallel with the substrate 1 The height of each nozzle 100 may be measured.

The inkjet unit described above controls the heights of the plurality of nozzles individually so that the ink can be ejected from the nozzles at the same height so that the ink is printed at the correct position.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. And changes may be made without departing from the spirit and scope of the invention.

1: substrate 3: stage
100, 100a, 100b, 100c, 100d, 100e, 100f: nozzle
110: nozzle body 120: nozzle tip
123: tip of nozzle tip 200: holder
210: coupling plate 230: clamp,
300: Bracket 400: Position controller
410: Support part 420: Actuator
430: screw shaft 440: nut
450: Guide housing 460: Guide bar
500: height measuring unit 510:
530:

Claims (6)

An ink jet unit for ejecting ink onto a substrate,
A bracket positioned above the substrate and moving relative to the substrate;
A plurality of holders respectively coupled to the brackets to move up and down;
A plurality of nozzles including a nozzle body supported by the holder and a nozzle tip coupled to the nozzle body for ejecting the ink toward the substrate; And
And a position control unit that adjusts the height of the holder.
The method according to claim 1,
The position control unit,
And an actuator for moving the plurality of holders up and down.
The method according to claim 1,
Wherein the plurality of nozzles comprises:
And is linearly arranged with an inclination with respect to a moving direction of the bracket.
The method according to claim 1,
And a height measuring unit for measuring a height of a tip of the nozzle tip,
The position control unit,
And the height of the nozzle is adjusted according to the height of the nozzle tip measured by the height measuring unit.
5. The method of claim 4,
The height measuring unit
A light emitting unit that emits light in parallel with the substrate; and a light receiving unit that receives light emitted from the light emitting unit,
Wherein the height of the nozzle tip is measured according to whether or not light is received by the light receiving unit.
5. The method of claim 4,
And the height measuring unit is coupled to the bracket so as to move parallel to the substrate.
KR1020150091218A 2015-06-26 2015-06-26 Ink-jet unit KR20170001354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150091218A KR20170001354A (en) 2015-06-26 2015-06-26 Ink-jet unit

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Application Number Priority Date Filing Date Title
KR1020150091218A KR20170001354A (en) 2015-06-26 2015-06-26 Ink-jet unit

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KR20170001354A true KR20170001354A (en) 2017-01-04

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KR1020150091218A KR20170001354A (en) 2015-06-26 2015-06-26 Ink-jet unit

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113628989A (en) * 2020-05-08 2021-11-09 株式会社考恩斯特 Ink jet nozzle module with added rotary motion and repairing device of substrate comprising same
KR20210147463A (en) * 2020-05-29 2021-12-07 한국미쯔보시다이아몬드공업(주) Dual type scribe head device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100858820B1 (en) 2006-12-13 2008-09-17 삼성에스디아이 주식회사 Electronic device and method of manufacturing the same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100858820B1 (en) 2006-12-13 2008-09-17 삼성에스디아이 주식회사 Electronic device and method of manufacturing the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113628989A (en) * 2020-05-08 2021-11-09 株式会社考恩斯特 Ink jet nozzle module with added rotary motion and repairing device of substrate comprising same
CN113628989B (en) * 2020-05-08 2024-03-08 株式会社考恩斯特 Ink jet nozzle module with added rotary motion and repairing device of substrate comprising same
KR20210147463A (en) * 2020-05-29 2021-12-07 한국미쯔보시다이아몬드공업(주) Dual type scribe head device

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