WO2006021999A1 - スペーサ散布装置 - Google Patents
スペーサ散布装置 Download PDFInfo
- Publication number
- WO2006021999A1 WO2006021999A1 PCT/JP2004/012206 JP2004012206W WO2006021999A1 WO 2006021999 A1 WO2006021999 A1 WO 2006021999A1 JP 2004012206 W JP2004012206 W JP 2004012206W WO 2006021999 A1 WO2006021999 A1 WO 2006021999A1
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- WO
- WIPO (PCT)
- Prior art keywords
- spacer
- head
- containing liquid
- head chamber
- opening
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
Definitions
- the present invention relates to a spacer spraying device.
- a spacer-containing liquid including a spacer is ejected from the opening of a head container forming a head chamber to the outside of the head chamber, and the spacer is placed on a substrate disposed so as to face the opening.
- the device to spread is known.
- Such an apparatus is provided with an agitation tank for agitating the spacer-containing liquid in order to sufficiently disperse the spacer in the spacer-containing liquid.
- This agitation tank is connected to the head chamber, and the agitated spacer-containing liquid is supplied to the head chamber. Also, the spacer-containing liquid in the head chamber is discharged by being sucked from the outside by a pump and returns to the stirring tank.
- the spacer-containing liquid circulates between the head chamber and the agitation tank, so that the spacer can be well dispersed in the head chamber.
- Patent Document 1 JP 2002-341352 A
- Patent Document 2 Japanese Patent Laid-Open No. 2003-121854
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a spacer spraying device that can reduce the mixing of bubbles into the head chamber.
- a first spacer spraying device includes: a head container that forms a head chamber that holds a spacer-containing liquid and has an opening that communicates the inside and outside of the head chamber; Spraying means for spraying the spacer-containing liquid held in the head to the outside of the head chamber, a storage tank for storing the spacer-containing liquid containing the spacer, and a flow path communicating between the inside and outside of the head chamber.
- a second pipe is formed to guide the spacer-containing liquid from the storage tank to the head chamber, and a flow path that communicates the inside and outside of the head chamber to guide the spacer-containing liquid in the head chamber to the outside of the head chamber.
- the passage resistance of the first tube is reduced to the second. It can be made sufficiently lower than the passage resistance of the other pipe. Therefore, the amount of the spacer-containing liquid equivalent to the amount of the spacer-containing liquid discharged from the head chamber by the pump through the second pipe is quickly removed from the stirring tank through the first pipe. Can be replenished. Therefore, the pressure in the head chamber is less likely to be negative, and bubbles are reduced from entering the head chamber.
- a second spacer spraying device includes: a head container that forms a head chamber that holds a spacer-containing liquid and has an opening that communicates the inside and outside of the head chamber; Spraying means for spraying the spacer-containing liquid held in the head to the outside of the head chamber, a storage tank for storing the spacer-containing liquid containing the spacer, and a flow path communicating between the inside and outside of the head chamber.
- the ability of the first pump to transfer the spacer-containing liquid and the second pump to transfer the spacer-containing liquid are adjusted. This makes it easy to make the amount of the spacer-containing liquid discharged from the head chamber force substantially equal to the amount of the spacer-containing liquid supplied from the stirring tank to the head chamber. Therefore, it is possible to reduce the bubble mixture into the head chamber, which is unlikely to become a negative pressure in the head chamber.
- the opening is formed in the upper wall of the head chamber, and the ejecting means causes the spacer-containing liquid in the head chamber to be opened outside the head chamber by opening force upward. It is preferable to spray. According to this, it is easy to make the volume of the sprayed spacer-containing liquid uniform.
- a stirring means for stirring the spacer-containing liquid in the storage tank.
- each head container is provided with a first tube and a second tube, and each first tube extends from each head chamber by the same length, one at the tip. And / or each second tube preferably extends from each head chamber by the same length and gathers together at the end.
- the supply amount of the spacer-containing liquid supplied to each head chamber and the discharge amount of the spacer-containing liquid discharged from each head chamber can be made substantially equal in each head chamber. . Therefore, in a plurality of head chambers, the circulation flow can be sufficiently stabilized and the mixing of bubbles can be sufficiently reduced.
- a plurality of openings are formed in the head container, and the ejecting means preferably includes a hammer that faces the plurality of openings in the head chamber and a piezo element that moves the hammer toward the plurality of openings.
- the spacer-containing liquid can be ejected with a large number of opening forces by one piezo element.
- the spacer spraying object is held so as to face the opening outside the head chamber, and the spacer spraying object is placed in a direction in which the opening of the plate and the spacer spraying object face each other. It is preferable to further include a spacer-spreading object moving means for moving in a direction intersecting with.
- a spacer-spreading object moving means for moving in a direction intersecting with.
- FIG. 1 is a schematic configuration diagram showing a spacer spraying device according to a first embodiment.
- FIG. 2 is a top view of the head assembly of FIG.
- FIG. 3 is a top view of the head device of FIG. 2.
- FIG. 4 is a view taken along arrows IV-IV in FIG.
- FIG. 5 is a view taken along arrows V—V in FIG.
- FIG. 6 is a diagram showing a substrate on which spacers are spread, (a) is a cross-sectional view, and (b) is a top view of the substrate of (a) as viewed from the side opposite to the glass substrate 121. It is.
- FIG. 7 is a flowchart showing the operation of the spacer spraying device.
- Fig. 8 is a schematic diagram of the spacer spraying device, (a) is a schematic side view of the spacer spraying device, (b) is a schematic diagram of the lower surface of the substrate of (a), and (c) is It is an upper surface schematic diagram of the head apparatus of (a).
- FIG. 9 is a schematic diagram showing a state in which a spacer-containing liquid is sprayed onto a substrate, (a) is a schematic side view, and (b) is a schematic bottom view of the substrate in (a).
- FIG. 10 is a schematic diagram showing a state of drying the droplets on the substrate, (a) is a schematic side view when the droplets on the substrate are dried, and (b) is a diagram after the droplets are dried.
- FIG. 3C is a schematic side view of the substrate, and FIG.
- FIG. 11 is a schematic configuration diagram showing a spacer spraying device according to a second embodiment. Explanation of symbols
- FIG. 1 is a schematic diagram of a spacer spraying apparatus according to this embodiment.
- This spacer spraying device 1 sprays the spacer-containing liquid from the head devices 41 of the head assembly 40 to the upper substrate 86, respectively, and sprays the spacer-containing liquid onto the lower surface of the substrate 86. It is a device that deposits drops.
- the spacer spraying apparatus 1 mainly includes a stirring tank (storage tank) 20 for stirring the spacer-containing liquid 12 and a spacer-containing liquid 12 supplied from the stirring tank 20.
- a stirring tank (storage tank) 20 for stirring the spacer-containing liquid 12 and a spacer-containing liquid 12 supplied from the stirring tank 20.
- a discharge pump 70 that sucks and discharges it back to the stirring tank 20, a substrate moving unit 80 that moves the substrate 86 above the head assembly 40, a controller 90 that controls the head device 41 and the substrate moving unit 80, Is mainly provided.
- the head device 41 includes a head container 42 and an ejection unit (ejecting means) 50.
- the head container 42 includes a thin plate 103 in which an opening 37 is formed, and a head chamber forming member 104 that forms head chambers 43 A and 43 B communicating with the opening 37.
- the ejecting unit 50 includes a hammer 52 and a piezo element 54 that eject the spacer-containing liquid in the head chambers 43A and 43B from the opening 37. Further, a plurality of head devices 41 are assembled to form a head assembly 40. These are described in detail below.
- FIG. 2 is a detailed top view of the head assembly 40
- FIG. 3 is a top view of one head device 41
- FIG. 4 is a view taken along arrows IV-IV in FIG. 3
- FIG. 5 is a view taken along arrows V-V in FIG. is there.
- the head device 41 is placed on a surface plate 29 installed horizontally in a predetermined horizontal direction (left and right in FIG. 2).
- a predetermined horizontal direction left and right in FIG. 2.
- this direction is referred to as the head device arrangement direction).
- the head device 41 includes a box-shaped head container 42 in which head chambers 43A and 43B are formed.
- the head container 42 has one side 42A on one side (upper side in the drawing) in the horizontal direction (vertical direction in FIG. 3, hereinafter referred to as the substrate moving direction) orthogonal to the head device arrangement direction, It is mainly composed of the other part 42B on the other side (illustrated side) of the substrate moving direction.
- the one part 42A and the other part 42B each have a box-shaped outer shape, and the one part 42A is shifted to the other side (the right side in the figure) in the head device arrangement direction with respect to the other part 42B. It is integrally formed.
- End surfaces 42a and 42b in the head device arrangement direction of one part 42A of the head container 42, and end surfaces 42c and 42d in the head device arrangement direction of the other part 42B of the head container 42 are respectively in the head device arrangement direction.
- Steps M in the head device arrangement direction are formed between the end surfaces 42a and 42c and between the end surfaces 42b and 42d, respectively.
- each head container 42 as shown in FIG. 2 to FIG. 3, a pair of elongated head chambers 43A and 43B extending in the head device arrangement direction are spaced apart in the substrate moving direction and are parallel to each other. Each is formed. The sizes of the head chambers 43A and 43B are substantially the same.
- the head chamber 43A is formed in one part 42A of the head container 42, and the head chamber 43B is formed in the other part 42B of the head container 42,
- the chamber 43A is displaced from the head chamber 43B by a distance M on the other side (right side in the drawing) in the head device arrangement direction.
- the head container 42 is mainly formed by three members, ie, a lower member 101, an upper member 102, and a thin plate (plate) 103, which are vertically stacked. It has been done.
- the lower member 101 is a plate-like member whose upper surface 101a is substantially flat, and the upper surface 101a of the lower member 101 mainly provides the bottom walls 43b of the head chambers 43A and 43B.
- the upper member 102 is a plate-like member, and is placed and fixed on the upper surface 101a of the lower member 101.
- the upper member 102 has a pair of hollow portions 102a that open upward and downward.
- the cavity 102a mainly provides the side walls 43s of the head chambers 43A and 43B.
- the lower member 101 and the upper member 102 constitute a head chamber forming member 104.
- the thin plate 103 is provided on the upper surface of the upper member 102 so as to cover the upper opening 102b of the cavity 102a, and mainly provides the upper walls 43c of the head chambers 43A and 43B.
- a large number of openings 37 are formed in the thin plate 103. Specifically, as shown in FIG. 3, in the thin plate 103, openings 37 communicating with the head chamber 43A are formed in a row in the head device arrangement direction to form an opening row 39A. Further, in the thin plate 103, a large number of openings 37 communicating with the head chamber 43B are formed in a line in the head device arrangement direction to form an opening line 39B.
- Each opening row 39A, 39B has n opening groups 38 (n> 2 and an integer, for example, 4 in the figure). That is, the number of aperture groups 38 is the same in each aperture row 39A, 39B.
- the aperture group 38 is formed by arranging m (m> 2 and integer) apertures 37 over a length K in the head device arrangement direction. In the drawing, the number of the openings 37 of the opening group 38 is reduced for the sake of simplicity, but the number of the openings 37 of the opening group 38 can be, for example, about 50 to 100.
- the aperture groups 38 are arranged in a staggered manner on the two apertures IJ39A, 39B.
- staggered means that the aperture groups 38 are alternately arranged in two rows along the head device arrangement direction, and when viewed from the substrate moving direction, the aperture groups 38 of the aperture ⁇ 1J39A and the aperture ⁇ IJ39A It says that it is arranged so that it does not overlap with the aperture group 38.
- the distance between the opening groups 38 is the same at the distance L.
- the openings 37 are equally spaced in one row.
- a wide portion is formed between the opening groups 38 of the opening rows 39A and 39B, and the strength of the thin plate 103 is sufficiently secured.
- the aperture groups 38 are alternately arranged in two rows, the spacers 10 can be evenly distributed in the row direction on the substrate 86 by the combination of the two apertures 1J39A and 39B.
- two head chambers 43A and 43B force S are formed in the head container 42, and one head chamber 43A communicates with the opening 37 of the other opening ⁇ IJ39A, and the other head chamber 43B Opening column 3 Since it communicates with the opening 37 of 9B, the inside of the head container 42 is horizontally divided into two. Accordingly, since the thin plate 103 is supported from below by the partitioning portion 42i (see FIG. 5) between the head chambers 43A and 43B, the thin plate 103 becomes a stagnation.
- the distance between the end surface 42a of the head container 42 and the opening group 38 closest to the end surface 42a in the opening row 39A is D1
- the head container 4 The distance between the end surface 42b of 2 and the aperture group 38 closest to the end surface 42b in the aperture row 39A is D2
- the distance between the end surface 42c of the head container 42 and the aperture group 38 closest to the end surface 42c in the aperture row 39B is D3
- D4 the distance between the end face 42d of the head container 42 and the opening group 38 closest to the end face 42d in the opening row 39B is D4
- D1 + D2) ⁇ L and (D3 + D4) ⁇ L are satisfied.
- the head containers 42 having such a shape are arranged in a row so that the steps are fitted in the head device arrangement direction, so that the entire head assemblies 40 arranged in a row are covered. Therefore, the opening groups 38 can be arranged in two rows and in a staggered manner so that the distance between the opening groups 38 is L even between the head containers 42 and 42.
- the width 86 W of the thin plate 103 of one head container 42 is as large as 86 W even if the width Y in the head device arrangement direction is not so large.
- the spacer-containing liquid can be sprayed to a desired position of the substrate 86. Therefore, the spacer-containing liquid can be sprayed with high accuracy onto the wide substrate 86 while suppressing the stagnation of the thin plate 103 of the head container 42.
- the diameter of the opening 37 is, for example, about 10-50 ⁇ m.
- the interval between the openings 37 in the opening group 38 is approximately the same as the width 122W of the transparent colored resin layers 122R, 122G, and 122B described later.
- the thin plate 103 and the upper member 102 are bonded to each other, while the upper member 102 and the lower member 101 are fixed to each other by screws (not shown) so that they can be attached to and detached from each other. Maintenance such as cleaning is improved.
- each head container 42 is shown in Fig. 2 and Fig.
- the first protrusion 33a provided on the end face 42e on one side (upper side in the figure) of the substrate moving direction, and the second protrusion 33b provided on the other end face (lower side in the figure) 42f in the substrate moving direction Respectively.
- the surface plate 29 is provided with a plunger 35a that presses each first protrusion 33a toward the other (downward in the figure) in the substrate movement direction with a predetermined panel pressure.
- the surface plate 29 is provided with a micrometer 35b that extends and contacts the second protrusion 33b in one direction (upward in the figure) in the substrate movement direction. Then, the head container 42 is sandwiched from both sides in the substrate moving direction by the plunger 35a and the micrometer 35b, and the micro device 35b is adjusted in the amount of expansion / contraction, thereby finely aligning the head device 41 in the substrate moving direction. Is possible.
- a plunger 35e and a micrometer 35f that sandwich the first protrusion 33a from both sides in the head device arrangement direction (left and right direction in the figure), and a second protrusion 33b in the head device arrangement direction. Plungers 35c and micrometers 35d for sandwiching both side forces are provided. Then, by adjusting the amount of expansion / contraction of the micrometer 35d and the micrometer 35f, minute alignment in the head device arrangement direction of each head device 41 and fine adjustment of the angle around the vertical axis of each head device 41 can be performed. It is possible.
- the one side 42A of the head container 42 has a supply pipe 46 that opens to one end (the left end in FIG. 3) of the head chamber 43A and opens to the end face 42e in the substrate moving direction.
- a discharge pipe 47 is formed which opens at the other end (right end in FIG. 3) of the head chamber 43A and opens at the end face 42e.
- the other portion 42B of the head container 42 has a supply pipe 46 that opens to one end portion (left end in FIG. 3) of the head chamber 43B and opens to the end face 42f in the substrate moving direction, and the other end portion of the head chamber 43B.
- a discharge pipe 47 is formed which opens at the right end of FIG. 3 and opens at the end face 42f.
- one supply pipe 46 extends in the substrate moving direction through the head chamber 43A force and then moves downward to enter the lower member 101. Thereafter, the inside of the lower member 101 is advanced again in the substrate moving direction, and an opening is formed on the end surface 42e of the lower member 101 in the substrate moving direction.
- the other supply pipe 46 is also formed in the same manner although not shown.
- one discharge pipe 47 also extends in the substrate moving direction in the upper member 102 by the force of the head chamber 43B. Then, it proceeds downward to enter the lower member 101, and then travels again in the lower member 101 in the substrate moving direction to open the end surface 42f of the lower member 101 in the substrate moving direction.
- the other discharge pipe 47 is also formed in the same manner although not shown.
- a connecting pipe 48 is further connected to the end of each supply pipe 46, and the end of the connecting pipe 48 is connected to the manifold tank 23 as shown in FIG. Further, as shown in FIG. 3, a connecting pipe 49 is provided at the end of each discharge pipe 47, and the end of this connecting pipe 49 is connected to the manifold tank 25 as shown in FIG.
- the supply pipe 46 and the discharge pipe 47 are formed from the end faces 42 e and 42 f of the lower member 101 to the head chambers 43 A and 43 B of the upper member 102, respectively. Since the connecting pipe 49 is connected to the supply pipe 46 and the discharge pipe 47 that open to the lower member 101 instead of the upper member 102, it is easy to remove the upper member 102 from the lower member 101, thereby improving the maintainability of the head container 42. To do.
- the supply pipe 46 and the discharge pipe 47 are formed so that only the upper member 102 passes through the head chambers 43A and 43B to the end surface of the upper member 102, and the connection pipe 48 and the connection pipe 49 are formed on the upper member 102. In this case, the flow of the spacer-containing liquid in the head chamber is less disturbed.
- the supply pipe 46 and the connection pipe 48 constitute a line L4 (first pipe), and the discharge pipe 47 and the connection pipe 49 constitute a line L6 (second pipe). Tube).
- the inner diameter of the line L4 is larger than the inner diameter of the line L6.
- the pipe diameters of the line L4 and the line L6 for example, the inner diameter of the line L4 is 10-6 mm, and the inner diameter of the line L6 is 8-4 mm.
- a piezo cavity 44 corresponds to each opening group 38. Are formed respectively.
- the piezo cavity 44 is opened downward, and a piezo element 54 is inserted into the piezo cavity 44 from below, and the bottom of the piezo element 54 is fixed to the lower member 101 by a fixing portion 55. Yes.
- Each of the piezo elements 54 is connected to the controller 90 and extends upward in response to a signal from the controller 90.
- the piezo cavity 44 and the head chambers 43A and 43B are communicated with each other through the opening 45. Yes.
- a hammer 52 is provided in the head container 42 so as to extend from the inside of the head chambers 43A and 43B through the opening 45 to the inside of each piezoelectric cavity 44.
- the hammer 52 and the piezo element 54 constitute the injection means 50.
- the hammer 52 has a plate-like portion 52a and a columnar portion 52b in order from the top.
- the plate-like portion 52a is a plate-like member arranged vertically in the head chambers 43A, 43B, and its upper end surface 52d is arranged horizontally.
- the upper end surface 52d has an elongated rectangular shape whose longitudinal direction is parallel to the head device arrangement direction, and the upper end surface 52d is longer than the length K of the opening group 38.
- the upper end surface 52d whose width is larger than the diameter of the opening 37, faces the entire opening 37 of each opening group 38 from below.
- the columnar part 52b is a vertical cylindrical body extending downward, and is fixed to the lower end of the plate-like part 52a.
- This columnar portion 52b has a step with a large diameter portion and a narrow diameter portion in order from the top.
- the columnar portion 52b has a sealing ring ⁇ 53 attached to the outer periphery in the vicinity of the step of the small diameter portion. The small diameter portion of 52b is inserted into the piezo cavity 44 through the opening 45.
- the upper end portion of the piezo element 54 is adhered to the lower end of the columnar portion 52b of the hammer 52.
- the spacer-containing liquid 12 can be jetted upward from the opening group 38 having a large number of openings 37 with one piezo element 54.
- the spacer-containing liquid 12 is sprayed upward in this manner, the spacer-containing liquid is prevented from sagging from the opening or the like onto the substrate.
- the stirring tank (storage tank) 20 includes a stirring blade (stirring means) 17 that is rotated by a motor 17a, and stirs the spacer-containing liquid 12 to disperse the spacer 10 in the liquid.
- the spacer for example, silicon compound particles formed from silica or the like having a particle size of about 17 ⁇ x, plastic particles formed from a silicone-modified polymer, or the like can be used.
- the spacer carrier liquid 11 in which the spacer 10 is dispersed is a mixture of water and IPA. Available.
- the stirring vessel 20 may employ an ultrasonic dispersing device instead of the stirring blade 17, and may use the stirring blade 17 and the ultrasonic dispersing device in combination as necessary. If the dispersibility is good, the operation is possible without a stirring blade or ultrasonic disperser.
- the stirring tank 20 is immersed in the thermostatic bath 26 so that the temperature of the spacer-containing liquid 12 can be kept almost constant. Further, the height of the stirring tank 20 is freely variable in the vertical direction so that the position of the water surface of the spacer-containing liquid 12 can be adjusted.
- a supply manifold 30 and a discharge manifold 32 are provided between the stirring tank 20 and each head device 41.
- the supply manifold 30 has a manifold tank 23 and a line L4 branched from the manifold tank 23 and opened to the head chambers 43A and 43B of the head devices 41.
- the discharge manifold 32 has a manifold tank 25 and a line L6 branched from the manifold tank 25 and opened to the head chambers 43A and 43B of the head devices 41.
- Line L4 consists of a supply pipe 46 and a connection pipe 48 as described above (see Fig. 2).
- Line L6 consists of a discharge pipe 47 and a connection pipe 49.
- the lengths of the lines L4 are all the same length and the same inner diameter
- the lengths of the lines L6 are all the same length and the same inner diameter. Further, the length of the line L4 and the length of the line L6 are approximately the same.
- the manifold tank 23 and the manifold tank 25 are containers each having a predetermined volume.
- the predetermined volume is, for example, all the head chambers 43A, 4 of the head assembly 40.
- the volume of 3B can be 4 to 10 times larger.
- the manifold tank 23 is connected to a stirring tank 2 by a line L2 having a predetermined pipe diameter.
- a mesh filter 5 is provided on the side close to the manifold tank 23 in the line L2.
- the mesh filter 5 should have a mesh opening diameter that allows the spacer 10 to pass therethrough and prevents the passage of the aggregates of the spacer 10 .
- the opening diameter is about 4 to 6 times the spacer diameter. It is a caliber.
- the material for such a mesh filter include metals and plastics.
- the manifold tank 25 is connected to the discharge pump 70 by a line L8 having a predetermined pipe diameter.
- the discharge pump 70 sucks the spacer-containing liquid in the manifold tank 25 through the line L8 and discharges it to the stirring tank 20 through the line L10 (return pipe).
- the discharge pump 70 for example, it is preferable to use a magnet-type pump having no sliding portion. Since the spacer-containing liquid 12 discharged from the head containers 43A and 43B is returned to the stirring tank 20 through the line L10, the spacer-containing liquid can be used efficiently without waste.
- the substrate moving unit (spacer spray object moving means) 80 includes a substrate suction unit 82 and a substrate moving unit 84.
- the substrate suction unit 82 supports the substrate 86 by sucking the substrate (spacer distribution object) 86 above the head device 41 by static electricity or reduced pressure.
- the substrate moving unit 84 moves the substrate suction unit 82 that has sucked the substrate 86 horizontally in the substrate moving direction. Further, the substrate moving section 84 can move the substrate 86 in the head device arrangement direction by a predetermined distance so that the substrate 86 can be aligned.
- Substrate moving part 84 includes substrate 86 Is preferably a linear motor type that can be moved with high accuracy.
- the substrate 86 as the spacer application object is moved by such a substrate moving unit 80, the structure having the hammer 52, the piezo element 54, etc., and the lines L4 and L6 are connected.
- the head assembly 40 (head device 41), which is relatively complicated, needs to be moved. Therefore, the structure of the spacer spraying device 1 is simplified, and it is relatively easy to improve the position accuracy of the spacer injection.
- the controller 90 is a computer device that performs processing based on a predetermined program, and is connected to and driven by the substrate moving unit 80, each piezo element 54 of the head assembly 40, the discharge pump 70, and the motor 17a. To control.
- the color filter CF includes a black matrix 123 formed in a grid pattern on the glass substrate 121, and a red transparent resin layer 122R and a green transparent resin layer 122G that are sequentially provided between the grids of the black matrix 123. And a blue transparent resin layer 122B.
- the black matrix 123 may be formed in a slit shape or the like.
- the length 122L of each colored transparent resin layer 122R, 122G, 122B is, for example, about 10-300 / im, and the width 122W is, for example, about 5-100 ⁇ m. is there.
- the black matrix 123 has a portion 123Y extending in the length direction of each colored transparent resin layer 122 and a portion 123X extending in the width direction of each colored transparent resin layer 122, and the width of the portion 123X is 12 3XW is, for example, 10-20 zm, and the width of the portion 123Y is 123YW, for example, 5 30 xm.
- the spacer-containing liquid 12 is put into the stirring tank 20 in advance. Further, the height of the water surface of the stirring tank 20 is set to be approximately the same as the height of the opening 37 of the head chambers 43A and 43B.
- the controller 90 performs a spraying operation.
- a flowchart of this operation is shown in FIG.
- the discharge pump 70 and the motor 17a are driven (step S101).
- the stirring blade 17 is driven, the spacer-containing liquid 12 is stirred in the stirring tank 20, and the spacer 10 is dispersed.
- the spacer-containing liquid 12 in which the spacer 10 is well dispersed in the stirring tank 20 is passed through the supply manifold 30 in the head chambers 43 A and 43 B of each head container 42. Further, the air is sucked into the discharge pump 70 through the discharge chambers 32 through the head chambers 43A and 43B, and discharged into the agitation tank 20. Therefore, the spacer-containing liquid 12 circulates between the stirring tank 20 and the head containers 43A and 43B.
- the passage resistance of the line L4 is sufficiently higher than the passage resistance of the line L6. Can be lowered. Therefore, when the head chamber 43A, 43B force and the spacer-containing liquid 12 are sucked and discharged through the line L6 by the discharge pump 70, the spacer-containing liquid 12 discharged from the head chambers 43A, 43B.
- the amount of the spacer-containing liquid 12 equivalent to the amount (flow rate) of can be quickly replenished from the agitation tank 20 into the head chambers 43A and 43B via the line L4. Accordingly, the inside of the head chambers 43A and 43B is unlikely to become negative pressure, and the mixing of bubbles from the opening 37 into the head chambers 43A and 43B is reduced.
- the substrate suction unit 82 is used to horizontally support the substrate 86 by suction so that the alignment film 125 faces downward, and the substrate moving unit 84 supports the substrate.
- 86 (alignment) is performed (step S103).
- 8B shows a bottom view of the substrate 86 in FIG. 8A
- FIG. 8C shows a top view of the head device 41 in FIG. 8A.
- the substrate 86 is arranged so that the length direction of each colored transparent resin layer 122R, 122G, 122B is parallel to the head device arrangement direction.
- the discharge pump 70 is stopped (step S105).
- the circulation amount can be defined as, for example, the weight or volume of the spacer-containing liquid supplied to the head chambers 43A and 43B per unit time.
- the substrate 86 is moved horizontally so as to pass above the head device 41, and each piezo element 54 is driven a plurality of times to thereby produce head chambers 43A, 43B.
- the liquid containing the sauce is sprayed upward from each opening 37 (step S107).
- the spacer-containing liquid droplet 110 adheres to the lower surface of the substrate 86.
- the droplet 110 includes one or more spacers 10. Volume of the droplet 110 can be, for example, 4 X 10- 8 - is 8 X 10- 8 cm 3.
- FIG. 9 (b) is a view of the substrate 86 of FIG. 9 (a) as viewed from below, and the droplets 110 ejected from each opening 37 adhere to the black matrix portion 123Y on the substrate 86. To do.
- the spacer-containing liquid 12 is ejected upward from the opening 37, the droplet 110 having a certain volume can be easily ejected. Further, since the driving of the discharge pump 70 is stopped, the circulation amount becomes almost zero, and there is almost no turbulence of the flow due to the circulation flow in the spacer-containing liquid 12 in the head chambers 43A and 43B. As a result, the straightness of the ejected liquid droplets is improved, and the liquid droplets can be attached to a desired location on the substrate. Therefore, the spacer can be dispersed at a desired position on the substrate.
- the diameter of the ejected droplets may vary.
- the spacers in the droplets may vary.
- the number may vary, and the spacer may not be contained in the liquid.
- the variation in droplet diameter tends to be reduced by reducing the circulation flow rate, and droplets containing an appropriate number of spacers can be ejected.
- the discharge pump 70 is driven again to circulate the spacer-containing liquid 12 (step S109).
- the spacer-containing liquid 12 is sufficiently circulated again after the jetting to maintain the dispersibility of the spacer 10 of the spacer-containing liquid 12 in the head chambers 43A and 43B in an extremely high state. , Can be prepared for further injection onto the substrate.
- step SI11 the spacer sprayer 1 returns to step S103 and repeats this series of processing (step SI11) as necessary, thereby removing the substrate 86 to which the droplet 110 is attached as desired. Create a number.
- the substrate 86 to which the droplet 110 is attached is carried into the drying chamber by a substrate transfer device (not shown).
- the drying chamber as shown in FIG. 10A, the droplets 110 on the substrate 86 are dried by an infrared heater 150 or the like.
- the spacer 10 is attracted to the vicinity of the horizontal center of the droplet 110 due to surface tension or the like, so that the droplet 110 adheres to the substrate 86 as shown in FIGS. 10 (b) and 10 (c). Spacer 10 is fixed in the vicinity of the center of the portion.
- the particle density of the spacer 10 is higher than the density of the spacer carrier liquid 11, and the droplet adhering surface of the substrate 86 is directed downward as shown in FIG. 10 (a).
- the spacer 10 is settled at the bottom of the droplet 110 during the drying. Therefore, even when the surface of the substrate 86 is uneven, the spacer is particularly accurately detected. 10 is attracted to the horizontal center of the droplet 110 and fixed.
- the inner diameter of the line L4 is larger than the inner diameter of the line L6, so that the passage resistance of the line L4 is larger than the passage resistance of the line L6. It can be made low enough. Therefore, the spacer-containing liquid equivalent to the amount of the spacer-containing liquid discharged from the head chambers 43A and 43B by the discharge pump 70 via the line L6 is quickly stirred via the line L4.
- the head chambers 43A and 43B can be replenished from 20. Accordingly, the inside of the head chambers 43A and 43B is unlikely to become negative pressure, and the mixing of bubbles into the head chambers 43A and 43B is reduced.
- the spacer-containing liquid can be suitably discharged by driving the piezo.
- the spacer spraying device 2 according to the present invention is different from the spacer spraying device 1 according to the first embodiment in that a supply pump 72 is further connected to the line L2.
- the inner diameter of the line L4 is not necessarily larger than the inner diameter of the line L6.
- Supply pump 72 is also controlled Controlled by controller 90.
- the head chambers 43A and 43B are adjusted.
- the amount of the spacer-containing liquid 12 sucked and discharged toward the agitation tank 20 is almost equal to the amount of the spacer-containing liquid 12 supplied into the agitation tank 20 force head chambers 43A and 43B.
- head chambers 43A and 43B can be done easily. Therefore, it is possible to reduce the mixing of bubbles into the head chambers 43A and 43B, which are difficult to become negative pressure in the head chambers 43A and 43B.
- the opening 37 is formed in the upper wall of the head chambers 43A and 43B, and the force by which the ejecting unit 50 ejects droplets upward from the opening 37.
- the opening 37 is formed on the bottom walls of the head chambers 43A and 43B, and the operation is possible even when the ejection unit 50 ejects droplets downward from the opening 37.
- two head chambers 43 A and 43 B are provided in the head container 42, but the head container 42 can operate even if there is only one head chamber. Further, the arrangement of the openings 37 in the upper walls 43c of the head chambers 43A and 43B can be arbitrarily changed.
- the spacer-containing liquid discharged by the discharge pump 70 is returned to the stirring tank 20, but the operation is possible even if it is discarded without returning to the stirring tank 20.
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Abstract
Description
Claims
Priority Applications (1)
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PCT/JP2004/012206 WO2006021999A1 (ja) | 2004-08-25 | 2004-08-25 | スペーサ散布装置 |
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PCT/JP2004/012206 WO2006021999A1 (ja) | 2004-08-25 | 2004-08-25 | スペーサ散布装置 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107247369A (zh) * | 2017-07-20 | 2017-10-13 | 深圳市华星光电半导体显示技术有限公司 | 一种液晶滴下装置 |
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JP2000221511A (ja) * | 1999-01-28 | 2000-08-11 | Hitachi Ltd | 液晶表示素子の製造方法及び液晶表示素子 |
JP2002341352A (ja) * | 2001-05-11 | 2002-11-27 | Lac:Kk | スペーサー散布方法及び装置 |
JP2003275646A (ja) * | 2002-03-19 | 2003-09-30 | Seiko Epson Corp | 吐出装置における機能液滴吐出ヘッドのクリーニングユニットおよびこれを備えた吐出装置、並びに液晶表示装置の製造方法、有機el装置の製造方法、電子放出装置の製造方法、pdp装置の製造方法、電気泳動表示装置の製造方法、カラーフィルタの製造方法、有機elの製造方法、スペーサ形成方法、金属配線形成方法、レンズ形成方法、レジスト形成方法および光拡散体形成方法 |
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JP2000221511A (ja) * | 1999-01-28 | 2000-08-11 | Hitachi Ltd | 液晶表示素子の製造方法及び液晶表示素子 |
JP2002341352A (ja) * | 2001-05-11 | 2002-11-27 | Lac:Kk | スペーサー散布方法及び装置 |
JP2003275646A (ja) * | 2002-03-19 | 2003-09-30 | Seiko Epson Corp | 吐出装置における機能液滴吐出ヘッドのクリーニングユニットおよびこれを備えた吐出装置、並びに液晶表示装置の製造方法、有機el装置の製造方法、電子放出装置の製造方法、pdp装置の製造方法、電気泳動表示装置の製造方法、カラーフィルタの製造方法、有機elの製造方法、スペーサ形成方法、金属配線形成方法、レンズ形成方法、レジスト形成方法および光拡散体形成方法 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107247369A (zh) * | 2017-07-20 | 2017-10-13 | 深圳市华星光电半导体显示技术有限公司 | 一种液晶滴下装置 |
WO2019015148A1 (zh) * | 2017-07-20 | 2019-01-24 | 深圳市华星光电半导体显示技术有限公司 | 一种液晶滴下装置 |
CN107247369B (zh) * | 2017-07-20 | 2019-12-31 | 深圳市华星光电半导体显示技术有限公司 | 一种液晶滴下方法 |
US10809549B2 (en) | 2017-07-20 | 2020-10-20 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Liquid crystal dropping device |
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