Source: https://patents.google.com/patent/JP5328726B2/en
Timestamp: 2020-07-06 09:30:59
Document Index: 230203873

Matched Legal Cases: ['art 120', 'art 120', 'art 120', 'art 120', 'art 120', 'art 120', 'art 720', 'art 720', 'art 130']

JP5328726B2 - Thin film deposition apparatus and organic light emitting display device manufacturing method using the same - Google Patents
Thin film deposition apparatus and organic light emitting display device manufacturing method using the same Download PDF
JP5328726B2
JP5328726B2 JP2010152846A JP2010152846A JP5328726B2 JP 5328726 B2 JP5328726 B2 JP 5328726B2 JP 2010152846 A JP2010152846 A JP 2010152846A JP 2010152846 A JP2010152846 A JP 2010152846A JP 5328726 B2 JP5328726 B2 JP 5328726B2
JP2010152846A
JP2011047035A (en
2009-08-25 Priority to KR20090078838 priority Critical
2009-08-25 Priority to KR10-2009-0078838 priority
2010-02-16 Priority to KR10-2010-0013848 priority
2010-02-16 Priority to KR1020100013848A priority patent/KR101193190B1/en
2010-07-05 Application filed by 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． filed Critical 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ．
2011-03-10 Publication of JP2011047035A publication Critical patent/JP2011047035A/en
2013-10-30 Publication of JP5328726B2 publication Critical patent/JP5328726B2/en
A thin film deposition apparatus that can be applied to manufacture large-sized display devices on a mass scale and that improves manufacturing yield, and a method of manufacturing an organic light-emitting display device by using the thin film deposition apparatus.
The present invention relates to a thin film deposition apparatus and a method of manufacturing an organic light emitting display device using the same, and more particularly, can be easily applied to a mass production process of a large substrate, improve a manufacturing yield, and increase a thickness of a deposited film. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin film deposition apparatus capable of improving the uniformity of thickness and a method for manufacturing an organic light emitting display device using the same.
Among the display devices, the organic light emitting display device has an advantage that it has not only a wide viewing angle and excellent contrast but also a high response speed, and is attracting attention as a next generation display device.
In general, an organic light emitting display device has a light emitting layer between an anode and a cathode so that holes and electrons injected from the anode and the cathode can recombine in the light emitting layer to realize a hue. It is an inserted laminated structure. However, since it is difficult to obtain high-efficiency light emission in such a structure, intermediate layers such as an electron injection layer, an electron transport layer, a hole transport layer, and a hole injection layer are selectively added between each electrode and the light emitting layer. Inserted and used.
However, it is substantially very difficult to form a fine pattern of an organic thin film such as a light emitting layer and an intermediate layer, and the luminous efficiency of red, green, and blue varies depending on the layer. (Pattern cannot be patterned on 5G or larger mother glass, and large organic light emitting display devices with satisfactory levels of driving voltage, current density, brightness, color purity, luminous efficiency, lifetime, etc. cannot be manufactured. Is urgently required.
Meanwhile, the organic light emitting display device includes a light emitting layer and an intermediate layer including the light emitting layer between a first electrode and a second electrode facing each other. At this time, the electrode and the intermediate layer may be formed by various methods, one of which is vapor deposition. In order to fabricate an organic light emitting display device using a vapor deposition method, a fine metal mask (FMM) having the same pattern as the thin film to be formed is formed on the substrate surface on which the thin film is formed. A thin film having a predetermined pattern is formed by depositing and depositing a material such as a thin film.
The main objects of the present invention are easy to manufacture, can be easily applied to the mass production process of large substrates, the manufacturing yield and deposition efficiency are improved, the material is easily recycled, the thickness of the deposited thin film An object of the present invention is to provide a thin film deposition apparatus capable of improving uniformity and a method for manufacturing an organic light emitting display device using the same.
A thin film deposition apparatus according to an embodiment of the present invention is a thin film deposition apparatus for forming a thin film on a substrate. The deposition source emits a deposition material, and is disposed on one side of the deposition source, along a first direction. A deposition source nozzle portion in which a plurality of deposition source nozzles are formed, a patterning slit sheet that is arranged to face the deposition source and that has a plurality of patterning slits formed along the first direction, and the deposition source nozzle A block comprising a plurality of blocking plates arranged along the first direction between the patterning slit sheet and the patterning slit sheet, and dividing the space between the deposition source nozzle section and the patterning slit sheet into a plurality of deposition spaces. A plate assembly, wherein the patterning slits corresponding to the respective vapor deposition spaces are formed to have different lengths, and the thin film vapor deposition device is separated from the substrate by a predetermined amount. It is formed on so that, the A the substrate and the thin film deposition apparatus, any one side is relatively movably formed with respect to the other side.
In the present invention, the length of the patterning slit increases as the distance from the center of each deposition space increases.
In the present invention, the length of the patterning slit corresponding to the center of each deposition space is formed smaller than the length of the patterning slit corresponding to the end of each deposition space.
In the present invention, a support member for supporting the patterning slit sheet is further provided so as to prevent the patterning slit sheet from being bent toward the vapor deposition source.
In the present invention, the support member is arranged to intersect with a longitudinal direction of the patterning slit.
In the present invention, the support member is arranged to be perpendicular to the longitudinal direction of the patterning slit.
In the present invention, there is further provided a correction plate that is disposed between the vapor deposition source nozzle part and the patterning slit sheet and blocks at least a part of the vapor deposition material emitted from the vapor deposition source.
In the present invention, the correction plate is provided so that the thickness of the thin film is substantially the same.
In the present invention, the height of the correction plate decreases as the distance from the center of each vapor deposition space increases.
In the present invention, the correction plate is formed in the shape of an arc or a cosine curve.
In the present invention, the correction plate is formed such that the height at the center of each vapor deposition space is lower than the height at the end of each vapor deposition space.
In the present invention, the correction plate is formed such that the amount of the vapor deposition material blocked at the center of each vapor deposition space is larger than the amount of the vapor deposition material blocked at the end of each vapor deposition space.
In the present invention, the correction plate is disposed on one surface of the patterning slit sheet.
In the present invention, the correction plate is formed for each of the vapor deposition spaces, and the size or shape of each of the correction plates depends on the characteristics of the vapor deposition material emitted from the vapor deposition source nozzle disposed in the vapor deposition spaces. Be changed.
In the present invention, the size or shape of each correction plate is changed so that the thickness of the thin film deposited in each of the plurality of deposition spaces is the same.
In the present invention, each of the plurality of blocking plates is formed in a second direction that is substantially perpendicular to the first direction, and a plurality of deposition spaces are formed between the deposition source nozzle portion and the patterning slit sheet. Divide into spaces.
In the present invention, the plurality of blocking plates are arranged at equal intervals.
In the present invention, the blocking plate and the patterning slit sheet are formed to be separated from each other with a predetermined interval.
In the present invention, the shield plate assembly includes a first shield plate assembly including a plurality of first shield plates and a second shield plate assembly including a plurality of second shield plates.
In the present invention, each of the plurality of first blocking plates and the plurality of second blocking plates is formed in a second direction substantially perpendicular to the first direction, and the deposition source nozzle portion and the patterning slit A space between the sheet is divided into a plurality of vapor deposition spaces.
In the present invention, each of the plurality of first blocking plates and the plurality of second blocking plates is arranged to correspond to each other.
In the present invention, the first blocking plate and the second blocking plate corresponding to each other are disposed so as to be substantially on the same plane.
A thin film deposition apparatus according to another embodiment of the present invention is a thin film deposition apparatus for forming a thin film on a substrate. The thin film deposition apparatus is disposed on one side of the deposition source and radiates a deposition material. And a plurality of patterning slits along a second direction perpendicular to the first direction. A plurality of patterning slits are formed to have different lengths, and the substrate is moved along the first direction with respect to the thin film deposition apparatus. Vapor deposition is performed, and the vapor deposition source, the vapor deposition source nozzle portion, and the patterning slit sheet are integrally formed.
A thin film deposition apparatus according to another embodiment of the present invention is a thin film deposition apparatus for forming a thin film on a substrate. The thin film deposition apparatus is disposed on one side of the deposition source and radiates a deposition material. And a plurality of patterning slits along a second direction perpendicular to the first direction. A patterning slit sheet formed, and a correction plate disposed between the vapor deposition source nozzle part and the patterning slit sheet to block at least a part of the vapor deposition material radiated from the vapor deposition source, The deposition is performed while moving along the first direction with respect to the thin film deposition apparatus, and the deposition source, the deposition source nozzle unit, and the patterning slit sheet are integrated. It is formed.
According to an embodiment of the present invention, there is provided a method of manufacturing an organic light emitting display device, the method of manufacturing an organic light emitting display device using a thin film deposition apparatus for forming a thin film on a substrate. A deposition material radiated from the thin film deposition apparatus on the substrate while either one of the thin film deposition apparatus and the substrate moves relative to the other side; Vapor deposition.
In the present invention, in the step of depositing the deposition material on the substrate, the deposition material radiated from the thin film deposition apparatus continuously moves on the substrate while the substrate moves relative to the thin film deposition apparatus. Vapor deposited.
The thin film deposition apparatus of the present invention is easy to manufacture and can be easily applied to the mass production process of large substrates, improving the production yield and deposition efficiency, facilitating recycling of the deposited material, and smoothing the deposited thin film. Can be improved once.
1 is a plan view of an organic light emitting display device manufactured by a thin film deposition apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating one subpixel in the organic light emitting display device of FIG. 1. 1 is a perspective view schematically illustrating a thin film deposition assembly according to an embodiment of the present invention. FIG. 4 is a schematic side view of the thin film deposition assembly of FIG. 3. FIG. 4 is a schematic plan view of the thin film deposition assembly of FIG. 3. 3 is a schematic view illustrating a deposition material being deposited in a thin film deposition assembly according to an exemplary embodiment of the present invention. It is drawing which shows the shadow which generate | occur | produces in the state by which the vapor deposition space was isolate | separated by the shielding board like FIG. 6A. It is drawing which shows the shadow which generate | occur | produces in the state which the vapor deposition space is not isolate | separated. 1 is a view schematically showing a distribution form of a deposited film deposited on a substrate by a thin film deposition apparatus according to an embodiment of the present invention. 1 is a schematic view illustrating a case where a deposition material is sprayed by a deposition source of a deposition apparatus according to an embodiment of the present invention. It is drawing which shows a part of patterning slit sheet. It is a top view which shows the other modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding one Embodiment of this invention. It is a top view which shows the other modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding one Embodiment of this invention. It is a top view which shows the other modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding one Embodiment of this invention. It is a back perspective view which shows the other modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding one Embodiment of this invention. It is the perspective view which showed schematically the thin film vapor deposition apparatus regarding other embodiment of this invention. It is a back perspective view which shows one modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding other embodiment of this invention. It is drawing which expanded and showed A of FIG. It is a back perspective view which shows the other modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding other embodiment of this invention. It is the perspective view which showed schematically the thin film vapor deposition apparatus regarding further another embodiment of this invention. It is a schematic side view of the thin film deposition apparatus of FIG. It is a schematic plan view of the thin film vapor deposition apparatus of FIG. It is drawing which shows the patterning slit sheet of the thin film vapor deposition apparatus of FIG. 5 is a view showing a patterning slit sheet of a thin film deposition apparatus according to another embodiment of the present invention. It is a rear view which shows the patterning slit sheet of the thin film vapor deposition apparatus by further another embodiment of this invention. 5 is a view showing a thin film deposition apparatus according to another embodiment of the present invention. 4 is a graph schematically showing a distribution form of a deposited film deposited on a substrate when the deposition source nozzle is not tilted in the thin film deposition apparatus according to the present invention. 6 is a graph schematically showing a distribution form of a deposited film deposited on a substrate when a deposition source nozzle is tilted by the thin film deposition apparatus according to the present invention.
Hereinafter, the present invention will be described in detail with reference to embodiments of the present invention shown in the accompanying drawings. The shape and size of elements in the drawings are exaggerated for a clearer explanation, and elements denoted by the same reference numerals in the drawings are the same elements.
FIG. 1 is a plan view of an organic light emitting display device manufactured by a thin film deposition apparatus according to an embodiment of the present invention.
Referring to FIG. 1, the organic light emitting display device may be formed of a pixel region 30 and a circuit region 40 at an edge of the pixel region 30. The pixel region 30 includes a plurality of pixels, and each pixel may include a light emitting unit that emits light so as to implement a predetermined image.
According to an embodiment of the present invention, the light emitting unit may include a plurality of subpixels each including an organic electroluminescent element. In the case of a full-color organic light-emitting display device, red (R), green (G), and blue (B) sub-pixels are arranged in various patterns such as a line shape, a mosaic shape, a lattice shape, and the like. Can do. The organic light emitting display device manufactured by the thin film deposition apparatus according to an embodiment of the present invention may be a monocolor flat panel display device that is not a full color flat panel display device.
The circuit area 40 can control an image signal or the like input to the pixel area 30. In these organic light emitting display devices, each of the pixel region 30 and the circuit region 40 may be provided with at least one thin film transistor.
In the thin film transistor provided in the pixel region 30, a data signal is transmitted to the light emitting element by a signal of the gate line, and a switching thin film transistor for controlling the operation thereof, and a predetermined current flows through the organic electroluminescent element by the data signal. There may be a pixel portion thin film transistor with a driving thin film transistor to be driven. The thin film transistor provided in the circuit region 40 may be a circuit thin film transistor provided to implement a predetermined circuit.
Of course, there are various numbers and arrangements of such thin film transistors depending on display characteristics, driving methods, and the like, and there are various arrangement methods.
FIG. 2 is a cross-sectional view illustrating one sub-pixel in the organic light emitting display device of FIG.
As shown in FIG. 2, a buffer layer 51 is formed on a glass or plastic substrate 50, on which a thin film transistor (TFT) and an organic light emitting diode (Organic Light Emitting Diode) are formed. : OLED).
An active layer 52 having a predetermined pattern may be disposed on the buffer layer 51 of the substrate 50. A gate insulating film 53 may be disposed on the active layer 52, and a gate electrode 54 may be disposed on a predetermined region on the gate insulating film 53. The gate electrode 54 may be connected to a gate line (not shown) for applying an on / off signal of the thin film transistor. An interlayer insulating film 55 is formed on the gate electrode 54, and the source / drain electrodes 56 and 57 can be formed in contact with the source / drain regions 52b and 52c of the active layer 52 through contact holes, respectively. A passivation film 58 made of SiO 2 , SiN x, or the like is formed on the source / drain electrodes 56, 57. The passivation film 58 is planarized with an organic material such as acrylic, polyimide, or BCB (Benzocyclobutylene). A film 59 may be formed. A pixel electrode 61 serving as an anode electrode of the OLED is formed on the planarization film 59, and a pixel definition film 60 (Pixel Define Layer) 60 may be formed of an organic material so as to cover the pixel electrode 61. After a predetermined opening is formed in the pixel definition film 60, the upper part of the pixel definition film 60 and the opening are formed, and the organic film 62 can be formed on the pixel electrode 61 exposed to the outside. The organic film 62 can include a light emitting layer. The present invention is not necessarily limited to such a structure, and various structures of organic light emitting display devices can be applied as they are.
The OLED emits red, green, and blue light according to a current flow to display predetermined image information. The OLED is connected to a drain electrode 57 of a thin film transistor and is supplied with a positive power from the pixel electrode 61. The counter electrode 63 is provided so as to cover the entire pixel and supplies negative power, and the pixel electrode 61 and the counter electrode 63 are disposed between the counter electrode 63 and the organic film 62 that emits light.
The pixel electrode 61 and the counter electrode 63 have an organic film 62 interposed therebetween, and voltages having different polarities are applied to the organic film 62 so that the organic film 62 emits light.
The organic film 62 may be a low molecular or high molecular organic film. When a low molecular organic film is used, a hole injection layer (HIL), a hole transport layer (HTL), light emission, and the like are used. A layer (EML: Emission Layer), an electron transport layer (ETL: Electron Transport Layer), an electron injection layer (EIL: Electron Injection Layer), etc. are formed in a single or composite structure, and usable organic materials are also available. Copper phthalocyanine (CuPc), N, N-di (naphthalen-1-yl) -N, N′-diphenyl-benzidine (NPB), tris-8-hydroxyquinoline aluminum (Alq) ) It may be variously applied as a start, and the like. These low molecular organic films can be formed by a vacuum deposition method.
In the case of a polymer organic film, it may have a structure provided with a hole transport layer (HTL) and a light emitting layer (EML). At this time, PEDOT is used as the hole transport layer and PPV ( Polymer organic materials such as poly-phenylene vinylene) and polyfluorene can be used, and can be formed by screen printing or ink jet printing.
Such an organic film is not necessarily limited to these, and various embodiments can be applied.
The pixel electrode 61 functions as an anode electrode and the counter electrode 63 functions as a cathode electrode. Of course, the polarities of the pixel electrode 61 and the counter electrode 63 may be reversed.
The pixel electrode 61 may be provided as a transparent electrode or a reflective electrode. When the pixel electrode 61 is used as a transparent electrode, the pixel electrode 61 is provided with ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO, or In 2 O 3 and is reflective. When used as a mold electrode, a reflective film is formed with Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, and their compounds, and then ITO, IZO, ZnO, or In 2 O 3 can be formed.
On the other hand, the counter electrode 63 can also be provided as a transparent electrode or a reflective electrode. However, when the counter electrode 63 is used as a transparent electrode, the counter electrode 63 is used as a cathode electrode, so that a metal having a small work function, that is, Li, Ca, LiF / After vapor-depositing Ca, LiF / Al, Al, Ag, Mg, and their compounds in the direction of the organic film 62, a transparent electrode such as ITO, IZO, ZnO, or In 2 O 3 is formed thereon. The auxiliary electrode layer and the bus electrode line can be formed of the material. When used as a reflective electrode, it can be formed by vapor-depositing the entire surface of Li, Ca, LiF / Ca, LiF / Al, Al, Ag, Mg, and their compounds.
In such an organic light emitting display device, the organic film 62 including a light emitting layer can be formed by a thin film deposition apparatus 100 (FIG. 4) described later.
Hereinafter, a thin film deposition apparatus and an organic light emitting display apparatus manufacturing method using the same according to an embodiment of the present invention will be described in detail.
3 is a perspective view schematically illustrating a thin film deposition assembly according to an embodiment of the present invention, FIG. 4 is a schematic side view of the thin film deposition assembly of FIG. 3, and FIG. 1 is a schematic plan view of a thin film deposition assembly of FIG.
Referring to FIGS. 3, 4, and 5, the thin film deposition assembly 100 according to an embodiment of the present invention may include a deposition source 110, a deposition source nozzle unit 120, a blocking plate assembly 130, and a patterning slit sheet 150. .
Here, the chamber is not shown in FIGS. 3, 4 and 5 for convenience of explanation, but all the configurations in FIGS. 3 to 5 are arranged in a chamber in which an appropriate degree of vacuum is maintained. Can be done. This is to ensure straightness of the vapor deposition material.
In detail, in order to deposit the deposition material 115 emitted from the deposition source 110 through the deposition source nozzle unit 120 and the patterning slit sheet 150 on the substrate 400 in a desired pattern, a chamber (not shown) is basically used. The inside of (1) must maintain the same high vacuum state as the FMM (Fine Mater Mask) vapor deposition method. In addition, the space between the deposition source nozzle unit 120 and the patterning slit sheet 150 is in a high vacuum state only when the temperature of the blocking plate 131 and the patterning slit sheet 150 is sufficiently lower than the temperature of the deposition source 110 (about 100 ° C. or less). Can be maintained. As described above, if the temperature of the shielding plate assembly 130 and the patterning slit sheet 150 is sufficiently low, any deposition material 115 emitted in an undesired direction can be adsorbed on the surface of the shielding plate assembly 130 and maintain a high vacuum. Therefore, the straightness of the vapor deposition material can be ensured without causing a collision between the vapor deposition materials. At this time, the barrier plate assembly 130 is directed to the high temperature vapor deposition source 110, and the temperature near the vapor deposition source 110 increases to a maximum of about 167 ° C. Therefore, if necessary, a partial cooling device may be further provided. For this, a cooling member (not shown) may be formed on the barrier plate assembly 130.
In these chambers (not shown), a substrate 400 which is a deposition target is disposed. The substrate 400 may be a flat panel display substrate, but a large area substrate such as mother glass capable of forming many flat panel displays may be used.
Here, one embodiment of the present invention is characterized in that the deposition proceeds while the substrate 400 moves relative to the thin film deposition assembly 100.
Specifically, in the existing FMM vapor deposition method, since the FMM size must be formed to be the same as the substrate size, the FMM must be enlarged as the substrate size increases. However, there is a problem that it is not easy to manufacture a large FMM, and it is not easy to pull the FMM and align it in a precise pattern.
In order to solve these problems, the thin film deposition assembly 100 according to an embodiment of the present invention is characterized in that deposition is performed while the thin film deposition assembly 100 and the substrate 400 move relative to each other. In other words, the substrate 400 disposed so as to face the thin film deposition assembly 100 can continuously perform deposition while moving along the Y-axis direction. That is, vapor deposition is performed by a scanning method. Here, in the drawing, it is illustrated that the deposition is performed while the substrate 400 moves in the Y-axis direction in a chamber (not shown), but the idea of the present invention is not limited to this, The substrate 400 is fixed, and the thin film deposition assembly 100 itself can perform deposition while moving in the Y-axis direction.
Therefore, in the thin film deposition assembly 100 of the present invention, the patterning slit sheet 150 can be made much smaller than the conventional FMM. That is, in the case of the thin film deposition assembly 100 of the present invention, since the substrate 400 is continuously deposited while moving along the Y-axis direction, that is, the scanning method is used, the width of the patterning slit sheet 150 in the X-axis direction If only the width in the X-axis direction of the substrate 400 is formed substantially the same, the length of the patterning slit sheet 150 in the Y-axis direction is much smaller than the length of the substrate 400. Thus, since the patterning slit sheet 150 can be made much smaller than the conventional FMM, the patterning slit sheet 150 of the present invention is easy to manufacture. That is, the patterning slit sheet 150 having a small size is more advantageous than the FMM deposition method in all processes such as the etching operation of the patterning slit sheet 150, the subsequent precision tension and welding operations, the moving operation and the cleaning operation. This becomes more advantageous as the display device becomes larger.
As described above, in order to perform deposition while the thin film deposition assembly 100 and the substrate 400 move relative to each other, it is desirable that the thin film deposition assembly 100 and the substrate 400 be separated from each other by a certain amount. This will be described in detail later.
Meanwhile, a deposition source 110 that stores and heats the deposition material 115 may be disposed on the side of the chamber facing the substrate 400. Deposition may be performed on the substrate 400 by vaporizing the deposition material 115 stored in the deposition source 110.
In detail, the vapor deposition source 110 includes a crucible 111 filled with a vapor deposition material 115 therein, and a vapor deposition material 115 filled in the crucible 111 by heating the crucible 111 on one side, more specifically, vapor deposition. The heater 112 for evaporating to the source nozzle part 120 side can be provided.
The deposition source nozzle unit 120 may be disposed on one side of the deposition source 110, specifically, on the side from the deposition source 110 toward the substrate 400. In the vapor deposition source nozzle unit 120, a plurality of vapor deposition source nozzles 121 are formed along the X-axis direction. Here, each of the plurality of vapor deposition source nozzles 121 may be formed at the same interval. The vapor deposition material 115 vaporized in the vapor deposition source 110 passes through such a vapor deposition source nozzle unit 120 and travels toward the substrate 400 that is the deposition target.
A barrier plate assembly 130 may be disposed on one side of the deposition source nozzle unit 120. The shield plate assembly 130 may include a plurality of shield plates 131 and a shield plate frame 132 provided outside the shield plate 131. The plurality of blocking plates 131 may be arranged in parallel to each other along the X-axis direction. Here, each of the plurality of blocking plates 131 may be arranged at the same interval. Further, each blocking plate 131 can be arranged in parallel with the YZ plane, in other words, perpendicular to the X-axis direction when viewed from the drawing. The plurality of blocking plates 131 arranged in this way can serve to partition the space between the deposition source nozzle unit 120 and the patterning slit sheet 150 into a plurality of deposition spaces S. That is, the thin film deposition assembly 100 according to an embodiment of the present invention is characterized in that the deposition space S is separated by the shielding plate 131 for each deposition source nozzle 121 to which the deposition material is injected.
Here, the respective shielding plates 131 may be disposed between the vapor deposition source nozzles 121 adjacent to each other. In other words, it can be said that one vapor deposition source nozzle 121 is disposed between the shielding plates 131 adjacent to each other. Desirably, the deposition source nozzle 121 may be located in the middle between the blocking plates 131 adjacent to each other. As described above, when the blocking plate 131 divides the space between the vapor deposition source nozzle unit 120 and the patterning slit sheet 150 into a plurality of vapor deposition spaces S, the vapor deposition material discharged from the single vapor deposition source nozzle 121 The vapor deposition material discharged from the vapor deposition source nozzle 121 is not mixed and passes through the patterning slit 151 and is deposited on the substrate 400. In other words, the shielding plate 131 can serve to guide the movement path of the vapor deposition material in the X-axis direction so that the vapor deposition material discharged through the vapor deposition source nozzle 121 is not dispersed and the straightness is maintained.
As described above, by providing the barrier plate 131 to ensure the straightness of the deposition material, the size of the shadow formed on the substrate can be greatly reduced. Therefore, the thin film deposition assembly 100 and the substrate 400 are fixed to a certain extent. It is possible to separate them. This will be described in detail later.
Meanwhile, a shielding plate frame 132 may be further provided outside the plurality of shielding plates 131. The shielding plate frames 132 are respectively provided on the upper and lower surfaces of the plurality of shielding plates 131 to support the positions of the plurality of shielding plates 131 and at the same time prevent the deposition material discharged through the deposition source nozzle 121 from being dispersed. It can serve to guide the movement path in the Y-axis direction.
On the other hand, the drawing shows that the vapor deposition source nozzle part 120 and the shielding plate assembly 130 are separated from each other by a certain distance, but the idea of the present invention is not limited to this. That is, in order to prevent the heat dissipated from the deposition source 110 from being conducted to the shielding plate assembly 130, the deposition source nozzle unit 120 and the shielding plate assembly 130 may be formed with a certain distance therebetween. When a suitable heat insulating means is provided between the nozzle part 120 and the shielding plate assembly 130, the deposition source nozzle part 120 and the shielding plate assembly 130 may be combined and contacted.
Meanwhile, the barrier plate assembly 130 may be formed to be separable from the thin film deposition assembly 100. Specifically, the conventional FMM vapor deposition method has a problem that the vapor deposition efficiency is low. Here, the vapor deposition efficiency means the ratio of materials actually vapor-deposited on the substrate among the materials vaporized by the vapor deposition source. The deposition efficiency of the conventional FMM deposition method is not only as low as about 32%, but the conventional FMM deposition method deposits about 68% of organic substances that are not used for deposition in various places inside the deposition apparatus. There was a problem that its recycling was not easy.
In order to solve such a problem, in the thin film deposition assembly 100 according to an embodiment of the present invention, the deposition space is separated from the external space using the barrier plate assembly 130, so that the deposition not deposited on the substrate 400 is performed. The material can be deposited substantially within the barrier assembly 130. Therefore, if the barrier plate assembly 130 is separable from the thin film deposition assembly 100 and a large amount of vapor deposition material accumulates in the barrier plate assembly 130 after long-time deposition, the barrier plate assembly 130 is separated and a separate vapor deposition material is recycled. The deposited material can be recovered by placing it in the apparatus. Through such a configuration, an effect of reducing the cost can be obtained by increasing the deposition material recycling rate.
Meanwhile, a patterning slit sheet 150 and a patterning slit sheet frame 155 may be further provided between the deposition source 110 and the substrate 400. The patterning slit sheet frame 155 is formed in a substantially window-like shape, and the patterning slit sheet 150 may be coupled to the inside thereof. In the patterning slit sheet 150, a plurality of patterning slits 151 can be formed along the X-axis direction. The length of the patterning slit 151 corresponding to one vapor deposition space S is not the same as shown in FIG. This is to improve the thickness uniformity of the deposited thin film. This will be described later.
The vapor deposition material 115 vaporized in the vapor deposition source 110 can pass through the vapor deposition source nozzle unit 120 and the patterning slit sheet 150 toward the substrate 400 that is the vapor deposition target. At this time, the patterning slit sheet 150 may be manufactured through etching, which is the same method as a manufacturing method of a conventional FMM, particularly a stripe type mask.
Here, in the thin film deposition assembly 100 according to the embodiment of the present invention, the total number of the patterning slits 151 may be larger than the total number of the deposition source nozzles 121. In addition, the number of patterning slits 151 can be formed more than the number of vapor deposition source nozzles 121 disposed between two shielding plates 131 adjacent to each other.
That is, one vapor deposition source nozzle 121 may be disposed between two shielding plates 131 adjacent to each other. At the same time, a plurality of patterning slits 151 may be disposed between the two blocking plates 131 adjacent to each other. And the space between the vapor deposition source nozzle part 120 and the patterning slit sheet 150 is divided by the two blocking plates 131 adjacent to each other, and the vapor deposition space S is separated for each vapor deposition source nozzle 121. Accordingly, the deposition material radiated from one deposition source nozzle 121 may be deposited on the substrate 400 through the patterning slit 151 in the same deposition space S.
Meanwhile, the blocking plate assembly 130 and the patterning slit sheet 150 are formed to be spaced apart from each other by a certain distance, and the blocking plate assembly 130 and the patterning slit sheet 150 may be connected to each other by a connecting member 135. In detail, since the temperature of the barrier plate assembly 130 is increased by about 100 ° C. or more due to the high temperature deposition source 110, the barrier plate assembly 130 is prevented from being conducted to the patterning slit sheet 150. And the patterning slit sheet 150 are separated by a certain amount.
As described above, the thin film deposition assembly 100 according to an embodiment of the present invention performs deposition while moving relative to the substrate 400, and thus the thin film deposition assembly 100 moves relative to the substrate 400. For this, the patterning slit sheet 150 may be formed to be separated from the substrate 400 by a certain amount. In order to solve the shadow problem that occurs when the patterning slit sheet 150 and the substrate 400 are separated from each other, a blocking plate 131 is provided between the vapor deposition source nozzle unit 120 and the patterning slit sheet 150 so that the vapor deposition material moves straight. By ensuring the property, the size of the shadow formed on the substrate can be greatly reduced.
Specifically, in the conventional FMM vapor deposition method, in order not to cause a shadow on the substrate, the vapor deposition process was performed with the mask adhered to the substrate. However, when the mask is brought into close contact with the substrate in this way, there is a problem that a defect problem due to contact between the substrate and the mask occurs. In addition, since the mask cannot be moved with respect to the substrate, the mask must be formed in the same size as the substrate. Therefore, although the size of the mask has to be increased as the display device becomes larger, there is a problem that it is not easy to form such a large mask.
In order to solve such a problem, in the thin film deposition assembly 100 according to an embodiment of the present invention, the patterning slit sheet 150 is disposed so as to be spaced apart from the substrate 400 that is the deposition target. This can be realized by providing the blocking plate 131 and reducing the shading generated on the substrate 400.
According to the present invention, after the mask is formed to be smaller than the substrate, the mask can be easily manufactured by moving the mask with respect to the substrate and performing deposition. In addition, it is possible to obtain an effect of preventing defects due to contact between the substrate and the mask. In addition, since the time for bringing the substrate and the mask into close contact with each other is not necessary, an effect of improving the manufacturing speed can be obtained.
Below, the size of the shadow formed with and without the shielding plate is compared in detail.
FIG. 6A is a view schematically illustrating a state in which a deposition material is deposited in a thin film deposition assembly according to an embodiment of the present invention, and FIG. 6B is a diagram in which deposition spaces are separated by a blocking plate as in FIG. 6A. FIG. 6C is a diagram illustrating a shadow generated in a state where the deposition space is not separated.
Referring to FIG. 6A, the deposition material vaporized by the deposition source 110 passes through the deposition source nozzle unit 120 and the patterning slit sheet 150 and is deposited on the substrate 400. At this time, since the space between the vapor deposition source nozzle unit 120 and the patterning slit sheet 150 is divided into a plurality of vapor deposition spaces S by the blocking plate 131, the respective vapor deposition sources of the vapor deposition source nozzle unit 120 by the blocking plate 131. The vapor deposition material emitted from the nozzle 121 is not mixed with the vapor deposition material emitted from the other vapor deposition source nozzle 121.
If the space between the deposition source nozzle unit 120 and the patterning slit sheet 150 is separated by the blocking plate assembly 130, the deposition material may be patterned at an angle of about 55 ° to 90 ° as shown in FIG. 6B. It passes through the sheet 150 and is deposited on the substrate 400. That is, the incident angle of the deposition material passing through the patterning slit 151 right next to the blocking plate 131 of the blocking plate assembly 130 is about 55 °, and the incidence angle of the deposition material passing through the patterning slit 151 in the central portion is substantially perpendicular to the substrate 400. become. At this time, the width SH 1 of the shadow region generated on the substrate 400 is determined by the following Equation 1.
(S = distance between patterning slit sheet and substrate, d s = width of vapor deposition source nozzle, h = distance between vapor deposition source and patterning slit sheet)
On the other hand, when the space between the deposition source nozzle part and the patterning slit sheet is not separated by the blocking plate, the deposition material is formed at various angles in a wider range than FIG. 6B as shown in FIG. 6C. Pass through. That is, in this case, not only the deposition material radiated from the deposition source nozzle directly opposite to the patterning slit but also the deposition material radiated from another deposition source nozzle is deposited on the substrate 400 through the patterning slit. The width of the shaded area SH2 formed in ( 2 ) is very large compared to the case where the shielding plate is provided. At this time, the width SH 2 of the shaded area generated on the substrate 400 is determined by the following formula 2.
SH 2 = s * 2d n / h
(S = distance between patterning slit sheet and substrate, d n = interval between adjacent deposition source nozzles, h = distance between deposition source and patterning slit sheet)
When comparing Formula 1 and Formula 2, d (interval between deposition source nozzles) is formed to be several to several tens of times or more larger than d s (width of the deposition source nozzle). It can be seen that when the space between the nozzle part 120 and the patterning slit sheet 150 is partitioned by the blocking plate 131, the shadow is formed much smaller. Here, in order to narrow the width SH 2 of the shadow areas created in the substrate 400, (1) or reduce the distance the deposition source nozzles 121 is provided (d n decreases), and (2) the patterning slit sheet 150 substrate It is necessary to narrow the distance from 400 (s decrease) or (3) increase the distance between the vapor deposition source and the patterning slit sheet (h increase).
Accordingly, it can be seen that the provision of the blocking plate 131 reduces the shadow generated on the substrate 400, and thus the patterning slit sheet 150 may be separated from the substrate 400.
Hereinafter, the patterning slit sheet for ensuring the film uniformity of the entire substrate will be described in detail.
FIG. 7 is a drawing schematically showing a distribution form of a deposited film deposited on a substrate by a thin film deposition apparatus according to an embodiment of the present invention. Here, FIG. 7 shows a case where the amount of radiation and the radiation coefficient of the organic matter emitted from each opening (that is, the vapor deposition source nozzle 121) are the same. In FIG. 7, S means each deposition space, and d means the distance between the shielding plates adjacent to each other.
In FIG. 7, the distribution form of the deposited film deposited by the thin film deposition apparatus having the same patterning slit length is shown by line A, and the patterning slits having different lengths are patterned. The distribution form of the deposited film deposited by the thin film deposition apparatus provided with the slit sheet is shown by line B.
As shown in FIG. 7, the organic matter radiation in the vacuum is radiated to the part perpendicular to the deposition source nozzle 121, that is, the central part of each deposition space S by the cosine law. The closer it is, the less organic matter is emitted. Therefore, the deposited film deposited by the thin film deposition apparatus including the patterning slit sheets having the same length of the patterning slit can be formed in a form as shown by line A in FIG. That is, if each vapor deposition space S is separated, a vapor deposition film is formed so that the central portion shows a convex shape, and when viewed as a whole, the vapor deposition is performed in such a manner that the convex portion and the concave portion are repeated. A film may be formed.
In this case, the relationship between the distance from the center of each deposition space S and the thickness of the deposited film can be easily derived through experiments, and in most cases can be expressed as a function of cos n (θ). .
In order to remove the non-uniform phenomenon of the deposited film thickness occurring in each deposition space S as described above, the patterning slits 151 can be formed with different lengths.
FIG. 8 is a schematic view illustrating a deposition material sprayed from a deposition source of a deposition apparatus according to an embodiment of the present invention.
The profile of the deposited film can be determined by the distance between the deposition source 110 and the substrate 400 and the n value of cos n (θ). Since the vapor deposition apparatus according to an embodiment of the present invention performs vapor deposition while moving relative to the substrate, the vapor deposition materials overlap along the moving direction. Thus, the thickness of the deposited film depending on the position is determined by Equation 3.
(TS is the distance between the deposition source and the substrate, x c is the center position of the substrate corresponding to each deposition space S, x e is an arbitrary position on the substrate corresponding to each deposition space S, and y is patterning Slit length)
The left side of Equation 3 means the thickness of the deposited film at the center position on the substrate corresponding to each deposition space S, and the right side of Equation 3 is an arbitrary position on the substrate corresponding to each deposition space S. It means the thickness of the deposited film. Therefore, when the left side and the right side of Equation 3 are the same, the thickness of the deposited film can be formed uniformly. In order to obtain the length of the patterning slit for uniformly forming the deposited film, the equation 3 can be obtained as the following equation 4, if the polynomial of x with respect to y is obtained.
The mathematical formula 4 is expressed by four variable coefficients whose highest order term is 4, but the present invention is not limited to this and may be a fifth or higher order term.
FIG. 9 shows a part of the patterning slit sheet according to the equations 3 and 4. Specifically, FIG. 9 shows a part of the patterning slit sheet corresponding to the deposition space formed by the barrier walls adjacent to each other. Referring to FIG. 9, the patterning slits 151 of the patterning slit sheet have different lengths, and the length y of the patterning slit can be increased from the central part (x = 0) to the outer part.
FIG. 10 is a plan view showing a patterning slit sheet 150 of the thin film deposition apparatus according to the embodiment of the present invention shown in FIG. Referring to FIG. 10, the patterning slits 151a, 151b, and 151c may be formed longer as the deposition space S is further away from the center. That is, among the patterning slits corresponding to the deposition space S, the length t2 of the patterning slit 151a corresponding to the center of the deposition space S is the shortest among the patterning slits corresponding to the deposition space S, and the patterning slit 151a. The length of the patterning slit increases as the distance from the surface increases. Accordingly, the length t2 of the patterning slit 151a corresponding to the center of the vapor deposition space S is the smallest, and the lengths t1 and t3 of the patterning slits 151b and 151c corresponding to both ends of the vapor deposition space S are the longest. The shapes of the patterning slits 151a, 151b, and 151c can be repeatedly arranged on the patterning slit sheet 150.
The patterning slit as described above can serve to block a part of the vapor deposition material moving from the vapor deposition source nozzle 121 to the patterning slit sheet 150 side. Specifically, since the central portion of the deposited film deposited by the thin film deposition apparatus has a convex shape, in order to make it uniform, a part of the vapor deposition material toward the central portion must be blocked. . Therefore, by forming the patterning slits 151a, 151b, and 151c with different lengths, a part of the vapor deposition material can be blocked. At this time, the patterning slit sheet 150 is formed such that the lengths of the patterning slits 151a, 151b, and 151c become longer from the center of the vapor deposition space S toward both ends. The patterning slit 151a corresponding to the portion passes a small amount of the vapor deposition material, and the patterning slits 151b and 151c corresponding to the end portions of the vapor deposition space S having a relatively long length pass a large amount of the vapor deposition material. In this case, the lengths of the patterning slits 151 a, 151 b, and 151 c are different so that the thinnest part in the vapor deposition space S, generally the film thicknesses at both end parts of the vapor deposition space S become the entire film thickness. Can be formed.
In this manner, by forming the patterning slits 151a, 151b, and 151c with different lengths, the deposited film deposited by the thin film deposition apparatus can be corrected to a form as shown by a line B in FIG. In other words, the portion where a large amount of vapor deposition material is deposited allows the patterning slit to be shortened and penetrates less, and the portion where the vapor deposition material is less deposited increases the length of the patterning slit. The amount of vapor deposition can be corrected so that the thickness of the vapor deposition material becomes uniform.
The uniformity of the thin film deposited on the substrate according to the present invention is uniformly formed within an error range of 1 to 2%, so that the effect of improving product quality and reliability can be obtained.
FIG. 11: is a top view which shows the other modification of the patterning slit sheet | seat of the thin film vapor deposition apparatus regarding one Embodiment of this invention. Referring to FIG. 11, the patterning slit sheet 250 includes patterning slits having different lengths. The patterning slit sheet 250 in FIG. 11 is the same as the patterning slit sheet 150 in FIG. 10 in that the patterning slit sheet 250 includes patterning slits having different lengths. However, in the patterning slit sheet 150 of FIG. 10, the upper portions of the patterning slits 151a, 151b, and 151c are in the same position, and there is a difference in length at the lower portion. However, the patterning slit sheet 250 of FIG. The patterning slit sheet 250 in FIG. 11 is different from the patterning slit sheet 150 in FIG. 10 in that the lengths of the patterning slits 251b and 251c are both smaller at the upper and lower portions. Despite the difference in the positions of the patterning slits, the patterning slit sheet 250 in FIG. 11 also has the patterning slits 251a, 251b, and 251c that are longer from the center of the vapor deposition space S to both ends. 10 patterning slit sheets 150 are the same. Accordingly, a small amount of deposition material passes through the patterning slit 251a corresponding to the relatively short central portion, and deposition is performed at the patterning slits 251b and 251c corresponding to the end portions of the deposition space S having a relatively long length. Since a large amount of material passes, the thickness of the deposited thin film can be formed uniformly.
FIG. 12 is a plan view showing still another modification of the patterning slit sheet of the thin film deposition apparatus according to the embodiment of the present invention. Referring to FIG. 12, the patterning slit sheet 350 may further include a correction plate 390. The correction plate 390 may be disposed on the upper surface of the patterning slit sheet 350 as shown in FIG. Although not shown in the drawing, the correction plate 390 can be disposed on the lower surface of the patterning slit sheet 350. Here, the upper surface of the patterning slit sheet 350 is a surface toward the substrate 400, and the lower surface of the patterning slit sheet 350 is a surface toward the vapor deposition source 110. The correction plate 390 may be disposed on the upper surface or the lower surface of the patterning slit sheet 350 so as to correspond to each deposition space S. The correction plate 390 can be formed in a form in which circular arcs or cosine curves are vertically coupled. Further, since the correction plate 390 is disposed at the center of the patterning slit sheet 350, the lengths of the both end slits 151e and 151f can be further increased as compared with the length of the center slit 151d. Accordingly, a relatively short length of the central slit 151d passes a small amount of the vapor deposition material, and both end slits 151e and 151f having a relatively long length allow a large amount of the vapor deposition material to pass therethrough. Can be formed uniformly.
Although not shown in the drawing, the correction plate may be formed in a form in which an arc or a cosine curve is vertically coupled between the blocking plates 131 adjacent to each other. These correction plates can serve to block a part of the vapor deposition material moving from the vapor deposition source nozzle 121 to the patterning slit 151 side.
In detail, since the central part of the deposited film deposited by the thin film deposition apparatus has a convex shape, in order to make this uniform, it is necessary to block a part of the vapor deposition material toward the central part. Therefore, a part of the vapor deposition material can be blocked by arranging the correction plate in the middle of the movement path of the vapor deposition material. At this time, the correction plate is formed in a shape in which an arc or a cosine curve is vertically coupled, so that a relatively large amount of vapor deposition material collides with the central portion that is relatively projected, and further blocks the vapor deposition material, The edge portion collides with a small amount of vapor deposition material, and can further block the vapor deposition material. In this case, the correction plate can be formed so that the thickness of the thinnest part in the vapor deposition space S, generally, the film thickness of both end parts of the vapor deposition space S becomes the entire film thickness.
As described above, by arranging the correction plate 390 in the movement path of the vapor deposition material, the vapor deposition film deposited by the thin film vapor deposition apparatus can be corrected to a form as shown by a line B in FIG. In other words, the portion where a large amount of vapor deposition material is deposited blocks the vapor deposition material by increasing the height of the correction plate, and the portion where the vapor deposition material is small is deposited by reducing the height of the correction plate. The amount of vapor deposition is corrected so that the thickness of the entire vapor deposition material becomes uniform by cutting off a small amount.
FIG. 13 is a rear perspective view showing still another modification of the patterning slit sheet of the thin film deposition apparatus according to the embodiment of the present invention. Referring to FIG. 11, a support member 160 that supports the patterning slit sheet 150 may be provided on the back surface of the patterning slit sheet 150. The support member 160 is disposed on the back surface of the patterning slit sheet 150 and can prevent the patterning slit sheet 150 from being bent toward the vapor deposition source 110. The support member 160 may have a rod shape. The support member 160 may be disposed on the back surface of the patterning slit sheet 150 so as to intersect the longitudinal direction of the patterning slit 151. As an example, the support member 160 may have a longitudinal direction that is the longitudinal direction of the patterning slit 151. It can be arranged vertically. Both ends of the support member 160 can be fixed to the patterning slit sheet frame 155.
FIG. 14 is a perspective view schematically showing a thin film deposition assembly according to another embodiment of the present invention.
Referring to FIG. 14, a thin film deposition assembly 500 according to another embodiment of the present invention includes a deposition source 510, a deposition source nozzle unit 520, a first blocking plate assembly 530, a second blocking plate assembly 540, a patterning slit sheet 550, and A substrate 400 can be provided.
In such a chamber (not shown), a substrate 400 that is a deposition target can be disposed. A deposition source 510 that stores and heats the deposition material 515 may be disposed on the side facing the substrate 400 in a chamber (not shown). The vapor deposition source 510 can include a crucible 511 and a heater 512.
A vapor deposition source nozzle unit 520 may be disposed on one side of the vapor deposition source 510, specifically, on the side facing the substrate 400 from the vapor deposition source 510. A plurality of vapor deposition source nozzles 521 can be formed in the vapor deposition source nozzle unit 520 along the X-axis direction.
A first blocking plate assembly 530 may be provided on one side of the deposition source nozzle unit 520. The first shield plate assembly 530 may include a plurality of first shield plates 531 and a first shield plate frame 532 provided outside the first shield plate 531.
A second barrier plate assembly 540 may be provided on one side of the first barrier plate assembly 530. The second shield plate assembly 540 may include a plurality of second shield plates 541 and a second shield plate frame 542 provided outside the second shield plate 541.
In addition, a patterning slit sheet 550 and a patterning slit sheet frame 555 may be further provided between the deposition source 510 and the substrate 400. The patterning slit sheet frame 555 is formed in a lattice shape like a window frame, and the patterning slit sheet 550 can be coupled to the inside thereof. In the patterning slit sheet 550, a plurality of patterning slits 551 can be formed along the X-axis direction.
Here, the thin film deposition assembly 500 according to the second embodiment of the present invention is characterized in that the barrier plate assembly is separated into a first barrier plate assembly 530 and a second barrier plate assembly 540.
Specifically, the plurality of first blocking plates 531 may be provided in parallel to each other along the X-axis direction. The plurality of first blocking plates 531 may be formed at regular intervals. Each first blocking plate 531 can be formed in parallel to the YZ plane, in other words, perpendicular to the X-axis direction when viewed from the drawing.
The plurality of second blocking plates 541 may be provided in parallel with each other along the X-axis direction. The plurality of second blocking plates 541 may be formed at equal intervals. Each of the second blocking plates 541 can be formed to be parallel to the YZ plane when viewed from the drawing, in other words, to be perpendicular to the X-axis direction.
The plurality of first blocking plates 531 and second blocking plates 541 arranged in this way can serve to partition the space between the deposition source nozzle unit 520 and the patterning slit sheet 550. Here, in the thin film deposition assembly 500 according to the second embodiment of the present invention, the deposition space is separated by the first shielding plate 531 and the second shielding plate 541 for each deposition source nozzle 521 to which the deposition material is injected. This is a feature.
Here, each of the second blocking plates 541 may be arranged to have a one-to-one correspondence with each of the first blocking plates 531. In other words, the second blocking plates 541 may be aligned with the first blocking plates 531 and parallel to each other. That is, the first blocking plate 531 and the second blocking plate 541 corresponding to each other can be arranged on the same plane. As described above, the first shielding plate 531 and the second shielding plate 541 arranged in parallel to each other divides the space between the deposition source nozzle unit 520 and the patterning slit sheet 550 described later, thereby providing one deposition. The deposition material discharged from the source nozzle 521 may be deposited on the substrate 400 through the patterning slit 551 without being mixed with the deposition material discharged from the other deposition source nozzles 521. In other words, the first blocking plate 531 and the second blocking plate 541 can serve to guide the movement path of the deposition material in the X-axis direction so that the deposition material discharged through the deposition source nozzle 521 is not dispersed.
Although the drawing shows that the thickness of the first blocking plate 531 in the X-axis direction is the same as the thickness of the second blocking plate 541 in the X-axis direction, the idea of the present invention is limited to this. is not. That is, the second blocking plate 541 that requires precise alignment with the patterning slit sheet 550 is formed relatively thin, while the first blocking plate 531 that does not require precise alignment is formed relatively thick, It can be said that the manufacture can be facilitated.
FIG. 15 is a rear perspective view showing a modification of the patterning slit sheet of the thin film deposition apparatus according to another embodiment of the present invention. Referring to FIG. 15, the support member 560 may be disposed on the back surface of the patterning slit sheet 550. The support member 560 is disposed on the back surface of the patterning slit sheet 550 and can prevent the patterning slit sheet 550 from being bent toward the vapor deposition source 510. The support member 560 may have a rod shape. The support member 560 is disposed on the back surface of the patterning slit sheet 550 so as to intersect the longitudinal direction of the patterning slit 551, and as one embodiment, the support member 560 has a longitudinal direction perpendicular to the longitudinal direction of the patterning slit 551. Can be arranged. Both ends of the support member 560 can be fixed to the patterning slit sheet frame 555.
In addition, the support member 560 can be supported by the second blocking plate 541. FIG. 16 is an enlarged view of A of FIG. Referring to FIG. 16, a through hole 543 is formed in the second blocking plate 541. The support member 560 can support the patterning slit sheet 550 through the through hole 543.
As described above, the patterning slit sheet 550 is different in the length of the patterning slits 551a, 551b, and 551c corresponding to the respective vapor deposition spaces S in order to make the thickness of the vapor deposition thin film uniform. The length of the patterning slits 551b and 551c corresponding to both ends of each deposition space S can be formed to be the longest as the length of the patterning slit 551a is the shortest. .
FIG. 17 is a rear perspective view showing another modification of the patterning slit sheet of the thin film deposition apparatus according to another embodiment of the present invention. Referring to FIG. 17, the patterning slit sheet 660 is the same as the patterning slit sheet 560 shown in FIG. 16 in that the support member 560 supports the patterning slit sheet 660. There are no slits formed on the surface. As described above, since a slit is not formed in the portion 662 of the patterning slit sheet where the support member 560 is disposed, it is possible to form a film by depositing a vapor deposition material between the support member 560 and the patterning slit sheet 660. Can be reduced.
The patterning slit sheet 660 shown in FIG. 17 is formed so that the slit 661d formed on one side has the same length around the patterning slit sheet portion 662 on which the support member 560 is disposed, and on the other side. The formed slits 661 have different lengths. That is, the length becomes longer as it goes from the slit 661a arranged at the center of each deposition space S to the slits 661b and 661c arranged at both ends of each deposition space S. Thus, by forming the slits with different lengths, the thickness of the deposited thin film can be uniformly formed as described above.
18 is a perspective view schematically showing a thin film deposition apparatus according to still another embodiment of the present invention, FIG. 19 is a schematic side view of the thin film deposition apparatus of FIG. 18, and FIG. It is a schematic plan view of the thin film vapor deposition apparatus of FIG.
18, 19, and 20, a thin film deposition apparatus 700 according to an embodiment of the present invention includes a deposition source 710, a deposition source nozzle unit 720, and a patterning slit sheet 750.
Here, for convenience of explanation, the chamber is not shown in FIGS. 18, 19 and 20, but all the configurations of FIGS. 18 to 20 are arranged in a chamber in which an appropriate degree of vacuum is maintained. It is desirable that This is to ensure straightness of the vapor deposition material.
In detail, the deposition material 715 emitted from the deposition source 710 passes through the deposition source nozzle unit 720 and the patterning slit sheet 750 and is deposited on the substrate 400 in a desired pattern. The interior of (not shown) must maintain the same high vacuum state as the FMM deposition method. In addition, the temperature of the patterning slit sheet 750 must be sufficiently lower (about 100 ° C. or lower) than the temperature of the vapor deposition source 710. This is because the thermal expansion problem of the patterning slit sheet 750 due to temperature can be minimized only when the temperature of the patterning slit sheet 750 is sufficiently low.
In these chambers (not shown), a substrate 400 which is a deposition target is disposed. The substrate 400 may be a flat panel display substrate, but may be a large area substrate such as mother glass that can form many flat panel displays.
Here, one embodiment of the present invention is characterized in that vapor deposition proceeds while the substrate 400 moves relative to the thin film vapor deposition apparatus 700.
Specifically, in the existing FMM deposition method, the FMM size must be formed to be the same as the substrate size. Therefore, the FMM has to be enlarged as the substrate size increases, which makes it difficult to fabricate the FMM, and it is not easy to pull the FMM and align it in a precise pattern.
In order to solve these problems, a thin film deposition apparatus 700 according to an embodiment of the present invention is characterized in that deposition is performed while the thin film deposition apparatus 700 and the substrate 400 move relative to each other. In other words, the substrate 400 disposed so as to face the thin film deposition apparatus 700 continuously performs deposition while moving along the Y-axis direction. That is, vapor deposition is performed by a scanning method while the substrate 400 moves in the direction of arrow A in FIG. Here, the drawing shows that the deposition is performed while the substrate 400 moves in the Y-axis direction in a chamber (not shown), but the idea of the present invention is not limited to this, and the substrate 400 is fixed. Thus, it can be said that the thin film deposition apparatus 700 itself can perform deposition while moving in the Y-axis direction.
Therefore, the thin film deposition apparatus 700 of the present invention can make the patterning slit sheet 750 much smaller than the conventional FMM. That is, in the case of the thin film deposition apparatus 700 of the present invention, the substrate 400 moves continuously along the Y axis direction, that is, in order to perform deposition in a scanning manner, the X axis direction and the Y axis of the patterning slit sheet 750 are used. The length in the direction can be formed much smaller than the length of the substrate 400. Thus, since the patterning slit sheet 750 can be made much smaller than the conventional FMM, the patterning slit sheet 750 of the present invention is easy to manufacture. That is, the patterning slit sheet 750 having a small size is more advantageous than the FMM deposition method in every process such as the etching operation of the patterning slit sheet 750, the subsequent precision tension and welding operation, the moving operation and the cleaning operation. This becomes more advantageous as the display device becomes larger.
Thus, in order for vapor deposition to be performed while the thin film deposition apparatus 700 and the substrate 400 move relative to each other, it is desirable that the thin film deposition apparatus 700 and the substrate 400 be separated by a certain amount. This will be described in detail later.
Meanwhile, a deposition source 710 that stores and heats the deposition material 715 is disposed on the side facing the substrate 400 in the chamber. Vapor deposition is performed on the substrate 400 by vaporizing the vapor deposition material 715 stored in the vapor deposition source 710.
In detail, the vapor deposition source 710 includes a crucible 711 filled with a vapor deposition material 715 and a vapor deposition material 715 filled in the crucible 711 by heating the crucible 711, And a heater 712 for evaporating on the vapor deposition source nozzle part 720 side.
On one side of the vapor deposition source 710, specifically, on the side facing the substrate 400 from the vapor deposition source 710, a vapor deposition source nozzle unit 720 is disposed. A plurality of vapor deposition source nozzles 721 are formed in the vapor deposition source nozzle portion 720 along the Y-axis direction, that is, the scan direction of the substrate 400. Here, the plurality of vapor deposition source nozzles 721 may be formed at equal intervals. The vapor deposition material 715 vaporized in the vapor deposition source 710 passes through these vapor deposition source nozzle portions 720 and travels toward the substrate 400 that is the deposition target. As described above, when a plurality of vapor deposition source nozzles 721 are formed on the vapor deposition source nozzle portion 720 along the Y-axis direction, that is, the scanning direction of the substrate 400, the patterning slit sheet 750 passes through each patterning slit 751. Since the size of the pattern formed by the vapor deposition material is affected only by the size of one vapor deposition source nozzle 721 (that is, only one vapor deposition source nozzle 721 exists in the X-axis direction), no shadow is generated. . In addition, since many deposition source nozzles 721 exist in the scanning direction, even if a flux difference occurs between the individual deposition source nozzles, the difference is offset and the deposition uniformity is maintained constant. Can be obtained.
Meanwhile, a patterning slit sheet 750 and a frame 755 are further provided between the deposition source 710 and the substrate 400. The frame 755 is formed in a substantially window-like shape, and a patterning slit sheet 750 is coupled to the inside thereof. In the patterning slit sheet 750, a plurality of patterning slits 751 are formed along the X-axis direction. The vapor deposition material 715 vaporized in the vapor deposition source 710 passes through the vapor deposition source nozzle portion 720 and the patterning slit sheet 750 and travels toward the substrate 400 that is the deposition target. At this time, the patterning slit sheet 750 may be manufactured through etching, which is the same method as a manufacturing method of a conventional FMM, particularly a stripe type mask. At this time, the total number of the patterning slits 751 can be formed more than the total number of the deposition source nozzles 721.
Meanwhile, the deposition source 710 (and the deposition source nozzle unit 720 coupled thereto) and the patterning slit sheet 750 are formed to be spaced apart from each other by a certain distance, and the deposition source 710 (and the deposition source nozzle coupled thereto) are formed. 720) and the patterning slit sheet 750 may be connected to each other by a connecting member 735. That is, the vapor deposition source 710, the vapor deposition source nozzle part 720, and the patterning slit sheet 750 are connected by the connecting member 735, and can be integrally formed. Here, the connecting member 735 can guide the movement path of the deposition material so that the deposition material discharged through the deposition source nozzle 721 is not dispersed. In the drawing, the connecting member 735 is illustrated as being formed only in the horizontal direction of the vapor deposition source 710, the vapor deposition source nozzle unit 720, and the patterning slit sheet 750, and guides only the X-axis direction of the vapor deposition material. For the convenience of illustration, the idea of the present invention is not limited to this, and the connecting member 735 is formed in a box-shaped sealed type to simultaneously guide the movement of the deposition material in the X-axis direction and the Y-axis direction. You can also
As described above, the thin film deposition apparatus 700 according to an embodiment of the present invention performs deposition while moving relative to the substrate 400, and thus the thin film deposition apparatus 700 moves relative to the substrate 400. For this purpose, the patterning slit sheet 750 is formed to be separated from the substrate 400 by a certain amount.
In detail, in the conventional FMM vapor deposition method, in order to prevent the substrate from being shaded, the vapor deposition process was performed with a mask adhered to the substrate. However, when the mask is brought into close contact with the substrate in this way, there is a problem that a defect problem due to contact between the substrate and the mask occurs. In addition, since the mask cannot be moved relative to the substrate, the mask must be formed in the same size as the substrate. Therefore, the size of the mask must be increased as the display device becomes larger, but there is a problem that it is not easy to form such a large mask.
In order to solve these problems, in the thin film deposition apparatus 700 according to still another embodiment of the present invention, the patterning slit sheet 750 is disposed so as to be separated from the substrate 400 that is the deposition target by a predetermined interval. So that
According to the present invention, after the mask is formed to be smaller than the substrate, the mask can be easily manufactured by moving the mask with respect to the substrate and performing evaporation. In addition, it is possible to obtain an effect of preventing defects due to contact between the substrate and the mask. In addition, since the time for bringing the substrate and the mask into close contact with each other is not necessary, an effect of improving the manufacturing speed can be obtained.
FIG. 21 is a view showing a patterning slit sheet 750 of the thin film deposition apparatus shown in FIG. Referring to FIG. 21, the length of the patterning slit 751a at the central portion of the patterning slit sheet 750 is shorter than the length of the patterning slits 751b at both ends of the patterning slit sheet 750 in order to ensure film uniformity across the entire substrate. It is formed. As for the organic matter radiation, the largest amount of organic matter is emitted to a portion perpendicular to the vapor deposition source nozzle 721 according to the cosine law, and the amount of the organic matter emitted decreases toward the both ends of the patterning slit sheet 750. Accordingly, in the case of a thin film deposition apparatus in which the lengths of the patterning slits 751 are the same, the deposited film is formed so that the central portion shows a convex shape.
In order to remove such a phenomenon of uneven deposition thickness, the length of the patterning slit 751a at the center of the patterning slit sheet 750 as shown in FIG. It is formed shorter than the length of. That is, the patterning slit 751a at the center of the patterning slit sheet 750 is formed with the shortest length, and the patterning slits 751b at both ends of the patterning slit sheet 750 are formed with the longest length. The patterning slit sheets 750 having different lengths serve to block a part of the vapor deposition material moving from the vapor deposition source nozzle 721 to the patterning slit 751 side.
That is, since the central portion of the deposited film deposited by the thin film deposition apparatus has a convex shape, in order to make this uniform, it is necessary to block a part of the vapor deposition material toward the central portion. Accordingly, since the patterning slit 751a is formed at the center of the patterning slit sheet 750 so that the length of the patterning slit 751a is shorter than both ends of the patterning slit sheet 750, a relatively large amount of the deposition material collides with the central portion, and the deposition material further A large amount of shielding is performed, and a little deposition material collides with the edge portion, so that the deposition material is further blocked.
In this way, by forming the patterning slits 751 with different lengths in the movement path of the deposition material, the deposited film deposited by the thin film deposition apparatus can be corrected. That is, a portion where a large amount of vapor deposition material is deposited blocks the length of the patterning slit 751a to block a large amount of the vapor deposition material, and a portion where a small amount of vapor deposition material is deposited increases the length of the patterning slit 751b. The amount of deposition is corrected so that the thickness of the entire deposition material is uniform by blocking the material to a small extent.
FIG. 22 is a view showing a patterning slit sheet 850 of a thin film deposition apparatus according to still another embodiment of the present invention. The present embodiment is distinguished from the thin film deposition apparatus 700 of the above-described embodiment in that a correction plate 857 is further provided on one side of the patterning slit sheet 850.
In detail, a thin film deposition apparatus according to still another embodiment of the present invention may further include a correction plate 857 to ensure film uniformity over the entire substrate. As for organic matter radiation, the largest amount of organic matter is radiated to a portion perpendicular to the deposition source nozzle 721 according to the cosine law, and the amount of radiated organic matter decreases toward the both ends of the patterning slit sheet 850. Therefore, in the case of a thin film vapor deposition apparatus that does not include a correction plate, the vapor deposition film is formed so that the central portion shows a convex shape.
In order to remove such a non-uniform phenomenon of the deposited film thickness, a correction plate 857 as shown in FIG. 22 may be provided on one side of the patterning slit sheet 850. The correction plate 857 is disposed on one surface of the patterning slit sheet 850 in a substantially arc shape or a cosine curve shape. These correction plates 857 function to block a part of the vapor deposition material moving from the vapor deposition source nozzle 721 toward the patterning slit 751 side.
That is, since the central portion of the deposited film deposited by the thin film deposition apparatus has a convex shape, in order to make this uniform, it is necessary to block a part of the vapor deposition material toward the central portion. Therefore, the correction plate 857 is disposed in the middle of the deposition material movement path to block a part of the deposition material. At this time, since the correction plate 857 is formed in a circular arc or cosine curve shape, a relatively large amount of the vapor deposition material collides with the central portion that is relatively projected, and the vapor deposition material is further blocked. It collides with less material and blocks the deposited material even less. In this case, the correction plate 857 can be formed so as to be the entire film thickness at the thinnest part, generally the film thickness at both end parts of the patterning slit sheet 850.
As described above, the deposition film deposited by the thin film deposition apparatus can be corrected by arranging the correction plate in the movement path of the deposition material. In other words, the portion where a large amount of vapor deposition material is deposited blocks the vapor deposition material by increasing the height of the correction plate, and the portion where the vapor deposition material is small is deposited by reducing the height of the correction plate. The amount of vapor deposition is corrected so that the thickness of the entire vapor deposition material is uniform by blocking it to a small extent.
FIG. 23 is a rear perspective view showing a patterning slit sheet of a thin film deposition apparatus according to still another embodiment of the present invention. Referring to FIG. 23, a support member 760 that supports the patterning slit sheet 750 may be provided on the back surface of the patterning slit sheet 750. The support member 760 is disposed on the back surface of the patterning slit sheet 750 and can prevent the patterning slit sheet 750 from being bent toward the vapor deposition source 710. The support member 760 may have a rod shape. The support member 760 is disposed on the back surface of the patterning slit sheet 750 so as to intersect the longitudinal direction of the patterning slit 751. In one embodiment, the support member 760 has a longitudinal direction perpendicular to the longitudinal direction of the patterning slit 751. Can be arranged. Both ends of the support member 760 can be fixed to the patterning slit sheet frame 755.
FIG. 24 is a view illustrating a thin film deposition apparatus according to another embodiment of the present invention. Referring to the drawings, a thin film deposition apparatus 900 according to another embodiment of the present invention includes a deposition source 910, a deposition source nozzle unit 920, and a patterning slit sheet 950. Here, the deposition source 910 heats the crucible 911 filled with the deposition material 915 and evaporates the deposition material 915 filled in the crucible 911 toward the deposition source nozzle unit 920. The heater 912 is provided. Meanwhile, a vapor deposition source nozzle unit 920 is disposed on one side of the vapor deposition source 910, and a plurality of vapor deposition source nozzles 921 are formed in the vapor deposition source nozzle unit 920 along the Y-axis direction. Meanwhile, a patterning slit sheet 950 and a frame 955 are further provided between the vapor deposition source 910 and the substrate 400, and a plurality of patterning slits 951 are formed in the patterning slit sheet 950 along the X-axis direction. The vapor deposition source 910 and the vapor deposition source nozzle unit 920 and the patterning slit sheet 950 are coupled by a connecting member 935.
The present embodiment is distinguished from the first embodiment (FIG. 18) in that a plurality of vapor deposition source nozzles 921 formed in the vapor deposition source nozzle unit 920 are arranged with a predetermined angle tilt. Specifically, the vapor deposition source nozzle 921 is formed by two rows of vapor deposition source nozzles 921a and 921b, and the two rows of vapor deposition source nozzles 921a and 921b are alternately arranged. At this time, the deposition source nozzles 921a and 921b may be formed to be tilted at a predetermined angle on the XZ plane.
When the length of the patterning slit 751 shown in FIG. 21 is differentiated, or when the correction plate 857 shown in FIG. 22 is provided, the vapor deposition material is blocked by the correction plate 857 or the patterning slit 751. Material utilization efficiency can be reduced. Therefore, in this embodiment, the vapor deposition source nozzles 921a and 921b are arranged with a predetermined angle tilt. Here, the vapor deposition source nozzle 921a in the first row is tilted so as to face the vapor deposition source nozzle 921b in the second row, and the vapor deposition source nozzle 921b in the second row is tilted so as to face the vapor deposition source nozzle 921a in the first row. Can be done. In other words, the vapor deposition source nozzles 921a arranged in the left column are arranged to face the right end portion of the patterning slit sheet 950, and the vapor deposition source nozzles 921b arranged in the right column are arranged in the left end portion of the patterning slit sheet 950. Can be arranged so as to face each other.
FIG. 25 is a graph schematically showing a distribution pattern of a deposited film deposited on a substrate when the deposition source nozzle is not tilted in the thin film deposition apparatus according to the present invention, and FIG. 26 is a thin film deposition according to the present invention. It is a graph which shows roughly the distribution form of the vapor deposition film vapor-deposited on the board | substrate when the vapor deposition source nozzle was tilted with the apparatus. 25 and 26, when the deposition source nozzle is tilted, the thickness of the deposited film formed on both ends of the substrate is relatively increased, and the uniformity of the deposited film is increased. I understand that.
With such a configuration, the deposition amount can be controlled so that the difference in film thickness between the center and the edge of the substrate is reduced, and the thickness of the entire deposition material is uniform, and further, the material utilization efficiency is improved. An improving effect can be obtained.
The present invention is not limited by the above-described embodiment and the accompanying drawings, but is limited by the scope of the claims, and variously within the scope of the technical idea of the present invention described in the scope of the claims. It will be apparent to those skilled in the art that various forms of substitutions, variations, and modifications are possible.
DESCRIPTION OF SYMBOLS 100 Thin film deposition apparatus 110 Deposition source 111 Crucible 112 Heater 115 Deposition material 120 Deposition source nozzle part 130 Blocking plate assembly 131 Blocking plate 132 Blocking plate frame 135 Connecting member 150 Patterning slit sheet 155 Patterning slit sheet frame 400 Substrate
A patterning slit sheet that is arranged facing the vapor deposition source and has a plurality of patterning slits formed along the first direction;
A plurality of barriers arranged along the first direction between the vapor deposition source nozzle part and the patterning slit sheet to divide a space between the vapor deposition source nozzle part and the patterning slit sheet into a plurality of vapor deposition spaces. A barrier plate assembly comprising a plate,
The patterning slits corresponding to the respective vapor deposition spaces are formed to have different lengths,
The thin film deposition apparatus is formed to be separated from the substrate by a predetermined amount,
The thin film deposition apparatus and the substrate are formed such that one side thereof is movable relative to the other side, and the substrate moves relative to the thin film deposition apparatus while Further, the deposition material of the deposition source is continuously deposited.
2. The thin film deposition apparatus according to claim 1, wherein the patterning slit is formed to have a longer length as the distance from the center of each deposition space increases.
2. The thin film deposition according to claim 1, wherein a length of the patterning slit corresponding to a center of each deposition space is smaller than a length of the patterning slit corresponding to an end of each deposition space. apparatus.
The thin film deposition apparatus according to claim 1, further comprising a support member that supports the patterning slit sheet so as to prevent the patterning slit sheet from being bent toward the deposition source.
The thin film deposition apparatus according to claim 4, wherein the support member is disposed to intersect with a longitudinal direction of the patterning slit.
The thin film deposition apparatus according to claim 5, wherein the support member is disposed to be perpendicular to a longitudinal direction of the patterning slit.
The correction plate according to claim 1, further comprising a correction plate disposed between the deposition source nozzle part and the patterning slit sheet and blocking at least a part of the deposition material radiated from the deposition source. The thin film deposition apparatus as described.
The thin film deposition apparatus according to claim 7, wherein the correction plate is provided such that the thicknesses of the thin films are substantially the same.
The thin film deposition apparatus according to claim 7, wherein the correction plate is formed such that the height of the correction plate decreases as the distance from the center of each deposition space increases.
The thin film deposition apparatus according to claim 9, wherein the correction plate is formed in a circular arc shape or a cosine curve shape.
The thin film deposition apparatus according to claim 7, wherein the correction plate is formed such that a height at a center of each deposition space is lower than a height at an end of each deposition space.
8. The correction plate according to claim 7, wherein a blocking amount of the deposition material at a center of each deposition space is larger than a blocking amount of the deposition material at an end of each deposition space. The thin film deposition apparatus as described.
The thin film deposition apparatus according to claim 7, wherein the correction plate is disposed on one surface of the patterning slit sheet.
The correction plate is formed for each deposition space,
The thin film deposition apparatus according to claim 7, wherein a size or a shape of each of the correction plates can be changed according to characteristics of the deposition material radiated from the deposition source nozzle disposed in each deposition space. .
15. The thin film deposition apparatus according to claim 14, wherein the size or shape of each correction plate can be changed so that the thickness of the thin film deposited in each of the plurality of deposition spaces is the same.
Each of the plurality of blocking plates is formed in a second direction substantially perpendicular to the first direction, and divides a space between the deposition source nozzle portion and the patterning slit sheet into a plurality of deposition spaces. The thin film deposition apparatus according to claim 1.
The thin film deposition apparatus according to claim 1, wherein the blocking plate and the patterning slit sheet are formed to be separated from each other with a predetermined interval.
2. The thin film deposition according to claim 1, wherein the barrier plate assembly includes a first barrier plate assembly including a plurality of first barrier plates and a second barrier plate assembly including a plurality of second barrier plates. apparatus.
Each of the plurality of first blocking plates and the plurality of second blocking plates is formed in a second direction that is substantially perpendicular to the first direction, and is between the vapor deposition source nozzle portion and the patterning slit sheet. The thin film deposition apparatus according to claim 19, wherein the space is divided into a plurality of deposition spaces.
The thin film deposition apparatus of claim 19, wherein the plurality of first blocking plates and the plurality of second blocking plates are arranged to correspond to each other.
The thin film deposition apparatus of claim 21, wherein the first blocking plate and the second blocking plate corresponding to each other are disposed on substantially the same plane.
A patterning slit sheet that is arranged opposite to the vapor deposition source nozzle part and has a plurality of patterning slits formed along a second direction perpendicular to the first direction,
The plurality of patterning slits are formed to have different lengths from each other,
24. The thin film deposition apparatus of claim 23, wherein the plurality of patterning slits are provided such that the deposited thin films have substantially the same thickness.
The thin film deposition apparatus according to claim 23, wherein a deposition amount of a deposition material deposited on the substrate is controlled according to a length of each patterning slit.
24. The thin film deposition apparatus according to claim 23, wherein a length of the patterning slit at a central portion of the patterning slit sheet is shorter than a length of the patterning slit at both ends of the patterning slit sheet.
24. The thin film deposition apparatus of claim 23, wherein the deposition source, the deposition source nozzle part, and the patterning slit sheet are integrally formed by being coupled by a connecting member.
28. The thin film deposition apparatus of claim 27, wherein the connecting member guides a movement path of the deposition material.
28. The thin film deposition apparatus of claim 27, wherein the connecting member is formed so as to seal a space between the deposition source and the deposition source nozzle part and the patterning slit sheet from the outside.
The thin film deposition apparatus according to claim 23, wherein the thin film deposition apparatus is formed to be separated from the substrate by a predetermined amount.
The thin film deposition apparatus according to claim 23, wherein the deposition material is continuously deposited on the substrate while the substrate moves along the first direction with respect to the thin film deposition apparatus. .
The thin film deposition apparatus according to claim 23, wherein the patterning slit sheet of the thin film deposition apparatus is formed smaller than the substrate.
The thin film deposition apparatus according to claim 23, further comprising a support member that supports the patterning slit sheet so as to prevent the patterning slit sheet from being bent toward the deposition source.
The thin film deposition apparatus of claim 33, wherein the support member is disposed to intersect with a longitudinal direction of the patterning slit.
The thin film deposition apparatus according to claim 34, wherein the support member is disposed to be perpendicular to a longitudinal direction of the patterning slit.
A correction plate disposed between the vapor deposition source nozzle part and the patterning slit sheet and blocking at least a part of the vapor deposition material radiated from the vapor deposition source;
37. The thin film deposition apparatus of claim 36, wherein the correction plate is provided such that the deposited thin films have substantially the same thickness.
37. The thin film deposition apparatus of claim 36, wherein the correction plate is formed such that its height decreases as the distance from the center of the patterning slit sheet increases.
The thin film deposition apparatus according to claim 38, wherein the correction plate is formed in a circular arc shape or a cosine curve shape.
38. The correction plate according to claim 37, wherein a blocking amount of the deposition material at a center of the patterning slit sheet is larger than a blocking amount of the deposition material at an end of the patterning slit sheet. The thin film deposition apparatus as described.
JP2010152846A 2009-08-25 2010-07-05 Thin film deposition apparatus and organic light emitting display device manufacturing method using the same Active JP5328726B2 (en)
KR20090078838 2009-08-25
KR10-2009-0078838 2009-08-25
KR10-2010-0013848 2010-02-16
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JP2011047035A JP2011047035A (en) 2011-03-10
JP5328726B2 true JP5328726B2 (en) 2013-10-30
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JP2010152846A Active JP5328726B2 (en) 2009-08-25 2010-07-05 Thin film deposition apparatus and organic light emitting display device manufacturing method using the same
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JP (1) JP5328726B2 (en)
CN (1) CN101997092B (en)
DE (1) DE102010039725A1 (en)
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