TWI221121B - Ink-jet printing apparatus for manufacturing organic electroluminescent panel - Google Patents

Abstract

An ink-jet printing apparatus for manufacturing organic electroluminescent panel comprises a panel loading platform, an ink-jet unit, a printing head loading element, a first image detecting unit and a second image detecting unit. In this case, the panel loading platform at least has one carrier unit, which carries at least one panel. The ink-jet unit comprises at least one ink-jet printing head, which has plurality of nozzles and the nozzles eject droplets toward the panel. The printing head loading element loads the ink-jet printing head and makes the printing head positioned above the carrier unit. The first image detecting unit is mounted on the printing head loading element beside the printing head and detects the in-situ image of the droplets ejected from the nozzles. The second image detecting unit is mounted on the printing head loading element beside the printing head and detects the in-situ image of the panel after being printed.

Description

1221121

(1) Time shadow, [Technical field to which the invention belongs] The present invention relates to an organic light emitting panel device for an inkjet printing image detection unit, and more particularly to an inkjet printing device having the inkjet printing device. (2) [The prior art organic light-emitting panel machine light-emitting panel is a functional mater element, which at least includes the characteristics of the light-emitting structure when a pair of electrically transparent anodes and metal anions are combined to generate excitons, which results in non-organic light emission. The device is divided into two categories: small molecule organic light emitting device and high molecular organic light emitting device (PLED). It is one of the currently popular flat-panel display technologies. There are ^ organic light-emitting elements and a base extension that use the self-luminous characteristics of organic functional materials to achieve display effects, and are composed of a bean electrode and an organic functional layer. . When an electric current passes between the electrodes, the electrons and holes are connected in the organic functional layer, so that the organic functional material layer can follow the light-emitting mechanism of its material and the same color. According to the molecular weight of organic functional materials, it is divided into small molecule OLED (SM-0LED) and polymer light-emitting device (^ due to the use of solvents, general organic light-emitting devices are vacuum & It. Film formation ', and the polymer light-emitting device is formed using a spin coating method. Among them, the vacuum vapor deposition must be performed in a complicated process step of the lamp, and a photomask or a screen plate is required. At the same time, organic solvents such as a developer (deve 1 〇pe ^) and a photoresist (str 丨 pper) are also used. ; ≫ Cereal 'other' spin coating method has problems with waste liquid, and equipment cost is also high.

Page 7 1221121 V. Description of the invention (2) In short, the inkjet printing (Ijp) process uses an inkjet head to spray ink onto the transparent anode layer. An organic light emitting layer is formed. The inkjet printing process does not require a photomask or screen. Only a single step is required to print the organic functional layer into the desired pattern, which makes the application range of organic light-emitting devices wider, and reduces manufacturing time and costs. . In addition, the inkjet printing process only needs to perform several steps such as alignment, inkjet printing, and cross-link curing, and does not require steps such as exposure and development, so there is no need to use the developer and photoresist in the lithography process. Solvents and other organic solvents can also reduce environmental issues in the manufacturing process.

Based on the above advantages, inkjet printing has made the use of inkjet printing process to form organic light-emitting elements, which has become one of the current mainstream processes; ^ Because the inkjet printing system uses the prepared ink from inkjet The machine is positioned to spray ink droplets onto the panel through a number of small nozzles on the inkjet head. Therefore, if the nozzle is blocked while inkjet printing is in progress, the method i will be immediate: ΐ :: will reduce the yield of the organic light-emitting element, *: cause waste of raw materials and increase in time and cost. + #Refer to Figure 1. The inkjet printing monitoring device of the conventional technology is the next to the inkjet printer table 1 1 and the inkjet head 12, which are respectively provided with a charge coupled element.

(Charge Coupled Device, CCD) 13 & 14. Among them, the charge-coupled element 13 provided on the stage 5 captures the image of the He ink head test at ^ ^ ^ 4 / 唷 before inkjet printing to detect that the nozzle of He ink M is at: As soon as a person submits, the π + coupling resistance group will close the charge coupling element 1 3 after confirmation. Then, σσ on the machine 11 and the χ-second motion of the organic light-emitting panel u (not shown in the figure (not shown)) will carry λ Υ. 17. Move below the inkjet head 12 (jetting

Page 8 I22ll2i

& 'Explanation of the invention (3) Ink Shuo 12 is fixed)' Another charge-coupled element 14 disposed next to the inkjet head 12 is to perform alignment of the panel 16 before inkjet printing. After the alignment operation is completed, the image capture is turned off, and after inkjet printing, the charge-coupled element 14 can be turned on again. As the X-Y stage 17 moves, one by one detects whether there are missing panels. 1 6. The charge-coupled components installed in the conventional technology can detect the inkjet head 12 before inkjet printing, but cannot detect the nozzles on the inkjet head in the process of inkjet ^ (not shown in the figure) ) Is it blocked. ^ The nozzle is blocked in the inkjet printing process, which will cause panel yield ^ Right and unnecessary waste of raw materials and time. In the light of the above problems, the inventor is eager to solve the problem of "inkjet printing of organic light-emitting panels" which can solve the problem of monitoring the inkjet head when no

(Viii), [The nozzle of the organic hair placed on the bearing is the reason, the ink printing device is the element supporting member. Among them, the bearing at least _ has a plurality of load-bearing components bearing Cheng Ming 0 0 ink column and immediate purpose,-work image inspection, at least army XJXJ ink early Yuan mouth system will be Yuan, 俾 plate, ·, Ϊ ;; located in the panel where Bear

The content of $ 9 pages] describes whether the light-emitting panel is blocked. In order to achieve the above, it includes a first work platform panel; a nozzle nozzle and a nozzle planted inkjet sheet to provide a printing device. The mounting platform and the measuring unit include a side system with up to one side facing the surface, so that the inkjet head has an image detection through the system, and can monitor the situation of the mouth ink panel in real time. ， Ink-sucking unit of organic light-emitting panel, tired mouth 3 Second image detection single board bearing unit, # / ~ cargo ink head, fw γ 1221121 V. Description of the invention (4) --------top The first image detection unit is located on one side of the inkjet head, and the image is printed on the bearing member. The second image detection unit is located immediately after the ink droplets are ejected from the nozzle. ; Ί: the early element is set on the ink-jet unit bearing structure; and, according to another aspect of the present invention, a real-time image of a tumai panel. It includes a work platform, a black-jet inkjet printing device, a first image detection unit, and a _: ^ ρ inkjet unit load bearing member, including at least one and four shirt detection units.苴 中 ^ ^ ^ 3 panel bearing unit, you Ning, industrial | unit system has at least-? Used to carry at least one side of the wonderful political harvest, priests--, earth ugly, 'mouth ink head system has plural Ha; spray Hei Liu Er & & ... ^ ^ is used as a stage _ board; the inkjet unit has at least-jet black ... ^ the owner is less than a mouth 'nozzle nozzle ejects ink droplets towards the panel a ^, tired, ink head system It has a plurality of inkjet units, so that the nozzle ink head is located on the panel bearing, where the bearing member system bearing image detection unit is arranged above the inkjet unit 早 &早; the first to the side, the nozzle That is 4; bearing; ", located on the inkjet head: set on the inkjet unit load bearing member, the real-time image of the + + image detection unit is a panel. Stand on one side of the mouth ink head, in addition to the plum, According to the present invention, an image detection unit and a first, —image detection unit, — = _ platform, including at least-panel bearing = detection unit 1, work; two inkjet units have at least-mouth ink two: Department To carry at least one side: the nozzles eject ink droplets towards the panel ... 3 Mouth: The unit is set on the inkjet sheet :: on the carrier unit =: Mo Fan, the bearing member Bu Wan, the first image inspection ___ is located in the inkjet head —, which includes a work stage, — optical panel inkjet Printing through, a first image detection unit, two = early =,-inkjet unit bearing structure ^ ^ κ an image detection unit, a 'ΗΛ πσ _ Hetest

1221121 V. Description of the invention (5) side to capture ink droplets from the nozzle Laoshan Qi & Electric. The salivary unit 1 is placed in the dark: the second image detection immediately after the ^ a, on the early soil bearing member , Located on one side of the inkjet head, f captures the real-time image of the inkjet rear panel; the third image detection unit, which is located on the working stage and faces the inkjet head, to capture the front nozzle of the inkjet The component is located on the inkjet head: where it is: = one side of Hemo Zaofan's bearing image, used to capture the inkjet array of the organic light-emitting panel of the present invention on the film of the front panel of Hemo.罟 | 罟 & An organic ink-jet printing device directly installed with an image detection unit on the side of the inkjet head to capture the daylight surface of the 啧 ^ w / Logic + Chengzhiyou panel. Due to the above-mentioned image production, when the nozzle and the panel are instant, the close distance can be achieved;;::!: Where the ink droplets installed on the bearing member of the inkjet unit eject before reaching the panel ^: depending on whether the nozzle It can be blocked, and it can be detected from the other-the image detection unit can :: Twenty calculate whether the inkjet frequency is normal, and identify whether there is a missing inkjet ^ ^: day-inch detection of the panel after inkjet printing, and indeed can reduce Because I do n’t know the nozzle is 卩, it can improve the yield of the organic light-emitting panel, and the waste of raw materials caused by the process: 5. Leakage phenomenon, and continue to perform inkjet production (four), [Embodiment] In addition, the explanation is relatively quick according to the present invention, and reference will be made to the related diagram device below. The inkjet printing of the organic light-emitting panel of the yoke example is shown in FIG. 2. The soil-printing device 2 of the present invention includes an ink-jet platform 21 including an organic light-emitting panel according to the embodiment. Unit 22, an inkjet device, and a description of the invention (6) Unit-bearing member 2 3. _ »y detection unit 25. Fuzhongyi's shirt image detection unit 24 and a second image stream, this panel bearing sheet, yuan =: 21 at least-panel support = unit 22, has at least κ = Γ, contains Λ less than one side ^ several nozzles 222 And the nozzle 99; Second, and the inkjet head 221 has a complex nozzle 2 2 2 The ink droplets (%, ejection; not shown in the bearing ring of the inkjet unit) toward the panel 26 _ 0 0. 7 ^ The warfare member 2 3 series carries the He Mo unit 2 2 and the Phantom Secret 221 is located on the panel bearing unit 211. The He Mo system was installed in the inkjet unit. ^ Brother—Image detection unit 24 ng-»^ + The K-carrying member 23 is located on one side of the inkjet head 221, and the real-time image after the output; and the second image inspection > 彳 目 I on the He Mozao U-carrying member 23, located at Inkjet head to capture real-time images of the inkjet rear panel 26. Qin-ΠΛ platform, 21: At least one panel carrying unit 211 is provided, and the panel carrying unit ′ is used to carry at least one panel 2 6 ′ for inkjet printing process. Generally speaking, the panel 26 includes at least one of the substrate, the first electrode pattern and the day barrier wall pattern, or a combination thereof. The substrate is usually a glass substrate, a plastic substrate, or a flexible (f 1 ex i b 1 e) substrate; at the same time, the substrate may be a plastic substrate or a glass substrate. Among them, the flexible substrate and the plastic substrate may be a polycarbonate (PC) substrate, a polyester (PET) substrate, a cycHc olefi n copolymer (C0C) substrate, or a metal chromium compound. Substrate—metallocene—based cyclic olefin copolymer (mCOC) substrate. The first electrode is usually used as an anode, and its material is usually a transparent conductive metal oxide, such as indium tin oxide (I TO), oxygen

Page 12 1221121 V. Description of the invention (7) = zinc zinc (AZO) or indium oxide (IZ0). In addition, the panel-bearing unit 211 can be moved in the χ_γ plane direction so that the panel 26 can complete the printing of the inkjet head 2 2 1 reachable range. The inkjet unit 22 has at least one inkjet head 221, and the inkjet head 221 has a plurality of nozzles 222 to perform an inkjet action, so that ink droplets are ejected toward the panel 26 for use on the panel 26. Form an organic functional layer (not shown in the figure) 'This organic functional layer is a small molecular material or a high molecular material. The organic gallium layer is selected from at least one of an electron injection layer, an electron transport layer, a hole injection layer, a hole transport layer, and an organic light emitting layer. Organic function ς = hair light is short-wavelength light, such as ultraviolet or blue light. Whereas, (the main material of the host layer is copper phthalocyanine II c), the material of the hole transport layer is mainly bis [N— (Buy: two ^ 1), Phenylamino] biphenyl (NP), and the electron injection layer is t ^ s (8 Lithium Gas (LiF), the material of the electron transport layer is mainly the filling material; the shape is different with the size of the pattern to be printed. Here, the spray properties 'If the solution viscosity, particle size, etc. are shown in the figure), it is used to drive; Contains-the drive (not shown and varies, and + He Mo Zaowu 22, and the drive is based on different conditions inkjet unit carrying 2 ί system The function of the ink flow rate and flow rate. The head 221 is located on the panel support member _23, and is used to carry the inkjet unit 22, so that the inkjet unit is above the 70211 when the inkjet unit is ejected. (Shown) to move the face fastener 23 to be fixed, relying on the drive unit (bearing unit 2 11 in the figure to adjust the inkjet unit 2 2)

Page 13 1221121 V. Description of the invention

The position for inkjet printing on the panel 26. A common method is that when the panel holder 211 is slowly moved in the Y direction, the inkjet unit 22 also performs black jetting at the same time. After completion, the panel bearing unit 211 moves a distance in the χ direction ^, and the ink unit 22 continues to perform another An inkjet printing process. ’嗔

The first image detection unit 24 is installed on the inkjet unit supporting member 23 and is located on the side of the inkjet head 221, so that the first image detection unit 2 captures an instant image of the ink droplets ejected from the nozzle 222. In addition to detecting whether ^ 222 is blocked, in this embodiment, the first image detection unit further: a data processing module (not shown in the figure), $ u, u — image detection sheet, = 24 Based on the image, calculate whether the frequency of ink droplets ejected by the nozzle 222 during traveling is the same as the set value of the process parameter. In addition, the first image detection unit 24 may be a charge coupled device. The second image detection unit 25 is disposed on the inkjet unit supporting member 23 ^ and = on one side of the inkjet head 221, and is preferably disposed in a direction opposite to the Y traveling direction with respect to the surface 4 ^ Side to capture the real-time image of the panel 26 on the panel carrying unit 211. The actual 2 ^ first shirt image detection unit 25 can also be connected with a data processing module (in the figure

Do f ++, 纟 " The image captured by the second image detection unit 25 is judged to be J: 2 2 1 leaking phenomenon occurs' to improve the organic light-emitting surface i should be noted i1 t The image detection unit 25 may be a charge combination element: /, there is a first image detection unit 24 and a second image detection unit to spray the organic light-emitting panel, and it is time to measure whether the nozzle 22 2 is blocking the moon. ^ ^ square "double outside, looking - cen [kappa] after, and whether the ink head jet 22ι leakage phenomenon to take another measurement of single Wu ~ 25 may further be an inkjet printing prior to retrieve anger.

Page 14 V. Description of the invention (9) Ink action front panel 2R > + Unit 22 Bottom 2: Surface (as shown in Figure 3). When the panel 26 is moved to the ink-jet registration operation (the high-precision optical inspection panel ^ can be performed on the vehicle H detection unit 25), the angle of the second image detection unit 25 (not shown in the figure) ^ Perform the shape and pattern of the pattern on the panel. After not identifying), complete the high-precision optical alignment quickly. ^ 喷墨 The ink-jet printing device of the organic light-emitting panel of the embodiment can also be ordered. Work, = 7L (not shown), and the image detection unit and inkjet? Action. In this embodiment, the control unit; 别 〔[car company, Ϊ Ϊ detection early 24, the second image detection unit 25 and the inkjet head 221 open / second decision: the shell material processing module determines whether the nozzle 222 is blocked or has The nozzle control unit can stop the inkjet operation of the inkjet head 221

Day t minus: >, daytime and waste of raw materials. P, ΐ ϊ ϊ ϊ V Figure V The ink-jet printing mounting table 21 of the organic light-emitting panel of this embodiment, which is set on the writing block of the work load. Because dt221 'is used to control whether the nozzle 222 is 27 yuan, that is, the alignment is located at the test spray ^ = = ^, * this * three image detection list ^ 1 .j ^^^ 222 ^ Vt a; tΤ! 1 ^ ^ + 疋The phenomenon of buying two hindered radicals. After confirming that the inkjet head 2? Ί π is suspended from the inkjet, the third image detection is turned off, and the bearing: Yuan 211 will also move the panel 26 under the inkjet unit 22 to print early with W. = 4 The three-image detection unit 27 may be an electric coupling /. The ink-jet printing device of the organic light-emitting panel of the ink example of the example can further include

Page 15 Description of the Invention (10)-A fourth image detection unit 28, which is a daylight surface. Before inkjet printing, He ink moves: then, panel 26, panel 26, # to the inkjet unit 22 胄 Early Wu 211 will print the noodles to be inkjet 9 s +, 'to facilitate inkjet printing . The panel 26 is moved to the ink-jet unit 22 ^ A 逡 粁 逡 粁, 逡 粁, 隹,, ⑴, and the fourth image detection unit 28 ii :::: optical registration action (accuracy above 1 micron). _ Unit 28 looks at the marks on the panel 26 to identify the pattern on the panel and the midpoint of the pattern (high-precision optics: not shown in the figure), and then complete Α Φ ^ Move the fourth image detection unit 28 may be an electrical coupling element. Detector image detection unit 2 4, Wang-Dan </ Meeting 4 people, Sundial σπ-r »Image detection unit 28, all located in the spray: U: 25 of the two images and the fourth measurement unit can be located in the sprayed second No.1: 7: Side, the above image inspection η is on the same side of the inkjet head 221, but it can also be located on different sides of the inkjet head, or at least two image detection units can be located on the same side of the inkjet head 221. The ink-jet printing device of the organic light-emitting panel of the present invention described in Beit Tu and Bi is an ink-jet printing device having an organic light-emitting panel in which an image detection unit is installed beside an ink-jet head to capture ink-jet. The real-time picture of the nozzle during printing. = The above-mentioned image detection unit is installed on the bearing unit of the inkjet unit, which can directly and immediately check whether the nozzle is blocked, and can eject the ink droplets to the daytime surface before the panel, and calculate whether the inkjet frequency is normal; In addition, the image detection unit can detect the panel after inkjet printing in real time, and confirm that there is no leaking phenomenon. Therefore, the yield of the organic light-emitting panel can be improved, and V can be reduced due to the unknown nozzle blocking or leaking phenomenon. Continuous inkjet

1221121 V. Description of invention (11) Raw material waste caused by process. The above description is exemplary only, and not restrictive. Any equivalent modification or change made without departing from the spirit and scope of the present invention shall be included in the scope of the attached patent application.

Page 17 1221121 Brief description of the drawings (five), [Simplified description of the drawings] Figure 1 is a schematic diagram of an inkjet printing device of a conventional organic light emitting panel; Figure 2 is a schematic diagram of an inkjet printing device of an organic light emitting panel of the present invention; And FIG. 3 is a schematic diagram of another inkjet printing device of the organic light emitting panel of the present invention. Description of component symbols 1 11 12 13 14 15 16 17 2 21 211 212 22 221 222 23 Inkjet printing device for organic light-emitting panel Machine head Inkjet head charge-coupled element Electric surface I-component test area panel XY Organic work panel Test jet inkjet nozzles inkjet printing device light-emitting panel ink-jet printing device carrier-bearing unit area tra early morning head unit bearing member

Page 18 1221121 Brief description of the drawings 24 First image detection unit 25 Second image detection unit 2 6 Panel 27 Third image detection unit 28 Fourth image detection unit

Page 19

Claims (1)

—Panel inkjet unit, which has at least _ + nozzles, nozzle positions, the inkjet ink sheet ejects "「 ... "above the board carrying unit :, carries the ink unit, and makes the first image of inkjet Detecting cover 仏 一, It is set on the inkjet unit supporting structure to capture the image of the inkjet head after the ink droplets are ejected from the nozzle; and the image detection is only opened on the inkjet head only on one side. Scope of patent ^ ___ — an inkjet working stage of an organic light-emitting panel, including at least a P device, including: H φ plate carrying unit, which is used to support the inkjet head fixture side, which is arranged on the inkjet unit carrying structure to capture Take the instant shadow of the inkjet rear panel 2 Lu γ; Bu 'ten — device, more scope _ spraying and facing spraying of the organic light-emitting panel described in item 1 __ Second image detection unit, which is set in the industrial The “^ 头” is used to capture the image of the nozzle before the inkjet. 3. If the application is described in item 4 of the application, the spray bearing member of the organic light-emitting panel described in item 2 includes a fourth image detection unit. , Which is set on the inkjet image. On 'is located on the inkjet On the other side, it is used to capture at least a plurality of heads on the front of the inkjet, real-time photos, and the image. Ink printing as a stage 4 Ink printing ink unit panel 4 · Female 0 Shenshi main animal device, range brother The inkjet printing of the organic light-emitting panel achieved by one item includes a control unit, which is connected to the image detection unit and the inkjet head. Page 20 1221121 Sixth, the scope of patent application is concluded to control the movement of the inkjet head. 5. The ink-jet printing device for an organic light-emitting panel according to item 1 of the scope of the patent application, wherein the panel includes at least one of a substrate, a first electrode pattern and a daylight barrier wall pattern or a combination thereof. 6. The ink-jet printing device for an organic light-emitting panel according to item 1 of the scope of patent application, wherein the ink-jet head is used to form an organic functional layer on the panel, and the organic functional layer is selected from an electron injection layer and an electron transmission Layer, hole injection layer, hole transport layer, and organic light emitting layer. 7. The ink-jet printing device for an organic light-emitting panel as described in item 6 of the scope of patent application, wherein the organic functional layer is a small molecular material or a high molecular material. 8. The ink-jet printing device for an organic light-emitting panel according to item 1 of the scope of patent application, wherein the first image detection unit is a charge-coupled device. 9. The ink-jet printing device for an organic light-emitting panel according to item 1 of the scope of patent application, wherein the second image detection unit is a charge-coupled device. 10. The ink-jet printing device for an organic light-emitting panel according to item 2 of the scope of patent application, wherein the third image detection unit is a charge-coupled device. 11. Inkjet printing of organic light-emitting panel as described in item 3 of the scope of patent application Page 21 VI. Scope of Patent Application ____ Device, Ganshang &quot; ~ The four image detection units in Zhongli are known as ~ charge-coupled elements—I ^ inkjet printing dream of organic light-emitting panel W h ruler-for stage , Including at least one panel and two sets of plates, including: a panel; carrying an early element, which is used to carry at least-strike σ mouth consistently W 7L, which has at least one nozzle, nozzle # len $ # He Moshuo, inkjet head It has a plurality of pages, and it suppresses the ink droplets from ejecting ink droplets toward the panel; ΈW early-wood bearing member, which bears the top of the + panel-bearing unit, and 丄 early-wood, so that the inkjet head is located on the image of the brother. The detection unit basin is located in M *, and is placed on the bearing unit of the ink-injection unit, and is placed on the bearing unit of the rental unit. The real-time image of the side extraction nozzle; and "..." on the loading member, π fan: the inkjet column of the first light panel, the second image detection early, it is set on τ &gt; For the inkjet head, it is used to capture the image of the nozzle before inkjet. 4 、 As described in item 1 of the scope of the application for patents .... A printing device'i includes a control unit, an image detection unit, and an ink column to control the operation of the inkjet head. Inkjet printing 1 5 · The luminescent printing device of the organic light-emitting panel as described in item 2 of the patent application scope, wherein the panel includes at least a substrate, a first electrode pattern, and 2 1221121 6. Scope of patent application One of the barrier wall patterns or a combination of the above. 16. The ink-jet printing device for an organic light-emitting panel according to item 12 of the scope of patent application, wherein the ink-jet head is used to form an organic functional layer on the panel, and the organic functional layer is selected from an electron injection layer and an electron. At least one of a transport layer, a hole injection layer, a hole transport layer, and an organic light emitting layer. 17. The ink-jet printing device for an organic light-emitting panel according to item 16 of the scope of patent application, wherein the organic functional layer is a small molecular material or a high molecular material. 18. The ink-jet printing device for an organic light-emitting panel according to item 12 of the patent application scope, wherein the first image detection unit is a charge-coupled device. 19. The ink-jet printing device for an organic light-emitting panel according to item 12 of the scope of patent application, wherein the second image detection unit is a charge-coupled device. 20. The ink-jet printing device for an organic light-emitting panel according to item 13 of the scope of patent application, wherein the third image detection unit is a charge-coupled device. 21. An ink-jet printing device for an organic light-emitting panel, comprising: a work stage including at least a panel-bearing unit for carrying at least one panel; an ink-jet unit having at least one ink-jet head, The inkjet head has a plurality of nozzles, and the nozzles eject ink droplets toward the panel; Page 231221121 VI. Patent application scope Inkjet single 7L supporting member is for supporting the inkjet unit, so that the inkjet head is located above the panel supporting unit; '' The first image detection unit is provided on the inkjet unit supporting member It is located on one side of the inkjet head to capture the instant image after the ink droplets are ejected from the nozzle. A second image detection unit is arranged on the bearing member of the inkjet unit and is located on one side of the inkjet head. To capture the real-time image of the inkjet rear panel · A third image detection unit, which is set on the work platform and faces the + head to capture the image of the nozzle before the inkjet; and, &quot; I ink A fourth image detection unit, which is arranged on the side of the ink-jet head on the support structure of the ink-jet unit, and is used for capturing the image of the ink-jet front panel. The + printing device of the light-emitting panel further includes a control unit, an image detection unit and a nozzle to control the operation of the inkjet head. ， 土 ， 硕 连 23. The organic light-emitting panel + printing device as described in item 21 of the scope of patent application, wherein the panel includes at least one of the substrate, the first electrode pattern row, and the barrier wall pattern or a combination thereof. Denier 24. The organic light-emitting panel + black printing device as described in item 21 of the scope of patent application, wherein the inkjet head is used to form an organic pattern on the panel, and the organic functional layer is selected from electron injection Layer, electron transport layer, hole = two 'layer, hole transport layer and organic light emitting layer. Into 1221121 VI. Scope of patent application 2 5 · The inkjet printing device of the organic light-emitting panel according to item 24 of the patent application scope, wherein the organic functional layer is a small molecular material or a high molecular material. 26. The ink-jet printing device for an organic light-emitting panel according to item 21 of the patent application scope, wherein the first image detection unit is a charge-coupled device. 27. The ink-jet printing device for an organic light-emitting panel according to item 21 of the scope of patent application, wherein the second image detection unit is a charge-coupled device. 28. The ink-jet printing device for an organic light-emitting panel according to item 21 of the scope of patent application, wherein the third image detection unit is a charge-coupled device. 2 9. The ink-jet printing device for an organic light-emitting panel according to item 21 of the scope of patent application, wherein the fourth image detection unit is a charge-coupled device. Page 25