WO2011125982A1 - Liquid-crystal panel manufacturing method, liquid-crystal panel, and repair device - Google Patents
Liquid-crystal panel manufacturing method, liquid-crystal panel, and repair device Download PDFInfo
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- WO2011125982A1 WO2011125982A1 PCT/JP2011/058545 JP2011058545W WO2011125982A1 WO 2011125982 A1 WO2011125982 A1 WO 2011125982A1 JP 2011058545 W JP2011058545 W JP 2011058545W WO 2011125982 A1 WO2011125982 A1 WO 2011125982A1
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- alignment film
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- 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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
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- 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
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Definitions
- the present invention relates to a method for manufacturing a liquid crystal panel, a liquid crystal panel, and a repair device. In particular, it relates to a technique for repairing alignment films of liquid crystal panels. Note that this application claims priority based on Japanese Patent Application No. 2010-88340 filed on Apr. 7, 2010, the entire contents of which are incorporated herein by reference. .
- a liquid crystal panel which is a component of a liquid crystal display device, has a structure in which a pair of substrates are opposed to each other with a predetermined gap secured. A liquid crystal layer containing liquid crystal molecules is sealed in the gap between the substrates. In addition, an alignment film for regulating the alignment state of the liquid crystal molecules is formed on the surfaces of both substrates in contact with the liquid crystal layer (for example, Patent Document 1).
- a stamp method is proposed in which the alignment film repair agent is transferred to the pinhole.
- the pinhole is repaired by pressing the transfer head with the alignment film repairing agent against the pinhole, so that the repair can be easily performed and the thickness of the repaired part can be controlled. Can be easily performed.
- the alignment film there is an inkjet method in addition to the spin coating method and the spray method.
- the coating liquid may not be ejected from the nozzles of the inkjet head, and in that case, a relatively wide pinhole (defect due to defective nozzle ejection) may occur. . And such pinholes need repair, and further improvement of pinhole repair technology is required.
- the present invention has been made in view of such a point, and a main object thereof is to provide a method of manufacturing a liquid crystal panel that can repair defects in an alignment film more easily.
- the method for producing a liquid crystal panel according to the present invention includes a step of forming an alignment film on the surface of the substrate by discharging a coating liquid by an ink jet method, and a step of repairing a defective portion of the alignment film by applying a repair ink.
- the coating solution in the step of forming the alignment film includes a solid content made of a material constituting the alignment film, a strong solvent that dissolves the solid content, and a dissolution in the solid content rather than the strong solvent.
- the repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and the repair ink is adjusted in the coating liquid.
- the solvent ratio strong solvent / adjusting solvent
- the solvent ratio strong solvent / adjusting solvent is lower than the solvent ratio of the strong solvent to the working solvent (strong solvent / adjusting solvent).
- the solid concentration of the repair ink is 1/10 or less of the solid concentration of the coating liquid.
- the solvent ratio of the strong solvent to the adjusting solvent in the coating solution (strong solvent / adjusting solvent) is 50/50.
- a liquid crystal panel according to the present invention includes a pair of substrates facing each other and a liquid crystal layer disposed between the pair of substrates, and an alignment film is formed on a surface of the substrate in contact with the liquid crystal layer.
- a repair layer is formed in the defect portion of the alignment film, and the alignment film is formed by ejecting a coating liquid by an ink jet method, and the repair layer applies a repair ink.
- the coating solution is a solid content made of a material constituting the alignment film, a strong solvent that dissolves the solid content, and an adjustment solvent that is less soluble in the solid content than the strong solvent.
- the repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and the repair ink is a strong solvent for the adjustment solvent in the coating liquid. Solvent ratio Than strong solvent / adjustment solvent) having a low solvent percentage (strong solvent / adjustment solvent).
- a repair device is a device for repairing a defective portion of an alignment film, and includes a repair stamp, a moving device that moves the repair stamp, and a control device that controls the moving device, and the control device includes: Moving the repair stamp to an ink supply unit that supplies repair ink, and disposing the repair stamp in a region including the defect portion of the alignment film.
- the alignment film is formed by discharging a coating liquid by an ink jet method, and the coating liquid includes a solid content made of a material constituting the alignment film, and a strength that dissolves the solid content.
- a solvent and a solvent for adjustment that is less soluble in the solid content than the strong solvent, and the repair ink is more than the concentration of the solid content contained in the coating liquid.
- the restoration ink has a lower solvent ratio (strong solvent / adjusting solvent) than the solvent ratio of the strong solvent to the adjusting solvent (strong solvent / adjusting solvent) in the coating liquid.
- a lower solvent ratio strong solvent / adjusting solvent
- an inspection apparatus for inspecting a defective portion of the alignment film is further provided.
- the defective portion of the alignment film can be repaired by applying the repair ink.
- the coating liquid contains a solid content made of the material constituting the alignment film, a strong solvent that dissolves the solid content, and an adjustment solvent.
- the repair ink has a concentration higher than the solid content concentration of the coating liquid. It has a low solid content concentration, and the solvent ratio (strong solvent / adjusting solvent) of the repair ink is lower than the solvent ratio (strong solvent / adjusting solvent) of the coating liquid. Accordingly, it is possible to reduce the amount of the repair ink that dissolves the alignment film.
- FIG. 3 is an enlarged plan view of a part of the upper surface of the array substrate 12.
- FIG. 2 is an enlarged cross-sectional view of a part of the liquid crystal panel 10.
- FIG. 4 is a plan view of a part of the upper surface of the array substrate 12.
- FIG. (A) to (c) are process cross-sectional views for explaining the process of forming the repair layer 35.
- A) is a figure which shows the mode of the board
- (b) is an enlarged view of the periphery of the repair area
- FIG. 1 is a plan view showing a configuration of an inkjet type coating apparatus 200.
- FIG. 1 is a plan view showing a configuration of an inkjet type coating apparatus 200.
- FIG. It is a figure which shows the structure of the coating device 200 of an inkjet system. It is a figure which shows typically the structure of the repair apparatus 300 which concerns on embodiment of this invention. It is a block diagram which shows the structure of the repair apparatus 300 which concerns on embodiment of this invention. It is a top view of a part of upper surface of the array substrate 12 including a plurality of repair regions.
- a liquid crystal display device 100 including a liquid crystal panel 10 obtained by a manufacturing method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
- FIG. 1 schematically shows a cross-sectional configuration of a liquid crystal display device 100 including a liquid crystal panel 10 of the present embodiment.
- a liquid crystal display device 100 shown in FIG. 1 includes a liquid crystal panel 10 and a backlight 20 that is an external light source disposed on the back side (lower side in FIG. 1) of the liquid crystal panel.
- the liquid crystal panel 10 and the backlight 20 are assembled and held by a bezel 29 covered from the front side of the liquid crystal panel 10.
- the backlight 20 includes a plurality of linear light sources (for example, cold cathode tubes) 22 and a case 24 that houses the light sources 22.
- the case 24 has a box shape opened toward the front side (the liquid crystal panel 10 side), and the linear light sources 22 are arranged in parallel in the case 24.
- the backlight 20 is not limited to a linear light source, but may have another configuration (for example, an LED light source).
- the optical sheet 26 includes, for example, a diffusion plate, a diffusion sheet, a lens sheet, and a brightness enhancement sheet in order from the back side. Further, in order to hold the optical sheet 26 between the case 24 and the case 24, a substantially frame-like frame 28 is provided on the case 24.
- the liquid crystal panel 10 generally has a rectangular shape as a whole, and is composed of a pair of translucent substrates (glass substrates) 11 and 12. Both substrates 11 and 12 are cut from a large base material called mother glass in the manufacturing process.
- Both the substrates 11 and 12 are arranged to face each other, and a liquid crystal layer 13 is provided between them.
- the liquid crystal layer 13 is made of a liquid crystal material whose optical characteristics change with application of an electric field between the substrates 11 and 12.
- a sealing material 15 is provided on the outer edge portions of the substrates 11 and 12 to seal the liquid crystal layer 13.
- a gap between the substrate 11 and the substrate 12 is secured by a spacer (not shown) and the sealing material 15.
- the spacers are made of, for example, an elastically deformable resin and have a granular shape (spherical shape). A large number of spacers are dispersed at predetermined positions in the liquid crystal layer 13.
- polarizing plates 17 and 18 are attached to the outer surfaces of both substrates, respectively.
- the spacer is not limited to a granular structure, and may be a columnar spacer.
- the front side of both the substrates 11 and 12 is the color filter substrate (CF substrate) 11, while the back side is the array substrate 12.
- FIG. 2 shows an enlarged part of the upper surface of the array substrate 12.
- FIG. 3 shows an enlarged part of the cross section of both the substrates 11 and 12.
- a switching element (for example, TFT) 44 and a pixel electrode 46 are provided on the upper surface of the array substrate 12 (the liquid crystal layer 13 side and the opposite surface side of the CF substrate 11).
- a grid-like source wiring 41 and gate wiring 42 are provided so as to surround them.
- the source wiring 41 and the gate wiring 42 are connected to the source electrode and the gate electrode of the switching element 44, respectively.
- the pixel electrode 46 is made of, for example, ITO (indium tin oxide).
- the pixel electrode 46 is formed in a rectangular shape, and in the example illustrated in FIG. 2, the pixel electrode 46 is formed in an elongated rectangular shape along the direction in which the source wiring 41 extends.
- the gate wiring 42 is formed on the array substrate (specifically, the glass substrate) 12.
- An insulating layer 31 is formed on the array substrate 12 so as to cover the gate wiring 42.
- An insulating layer 32 is formed on the insulating layer 31, and a pixel electrode 46 is formed on the insulating layer 32.
- the substrate 12 to the insulating layer 32 and the pixel electrode 46 may be referred to as the array substrate 12.
- an alignment film 30 (30A) for aligning liquid crystal molecules in the liquid crystal layer 13 is formed on the surface in contact with the liquid crystal layer 13 in the pixel electrode 46 and the insulating layer 32 located outside thereof.
- the alignment film 30 of the present embodiment is made of a material (so-called vertical alignment type material) that aligns liquid crystal molecules perpendicularly to the surface of the alignment film 30 in a state where no voltage is applied to the liquid crystal layer 13.
- the alignment film 30 of this embodiment is made of polyimide.
- the thickness of the alignment film 30 is, for example, about 100 nm to 200 nm.
- the pixel electrode 46 and the insulating layer 32 are the base of the alignment film 30. However, in a liquid crystal panel employing another laminated structure, a layer different from the above may be the base.
- the pixel electrode 46 (surface of the array substrate 12) of this embodiment is provided with slits 33 (grooves, openings, steps). Therefore, a step is generated on the surface of the alignment film 30 formed along the pixel electrode 46.
- the slit 33 is formed in a groove shape having a predetermined width.
- the pixel electrode 46 is formed at the center position in the longitudinal direction, in the vicinity of both end positions in the longitudinal direction, and at an intermediate position thereof.
- the slit 33 at the intermediate position is V-shaped in plan view.
- the slit 33 at the center position is disposed on the side edge of the pixel electrode 46 and has a triangular shape in plan view.
- the slits 33 on both ends have a linear shape substantially parallel to the slit 33 on the center side.
- the slits 33 are arranged at substantially equal intervals.
- the alignment state can be regulated so that the liquid crystal molecules are inclined with respect to the vertical direction shown in FIG. 3 (the direction orthogonal to the surface direction of both the substrates 11 and 12) by the step of the alignment film 30 at each slit 33. Due to the step formed by the slits 33, the rubbing process for the alignment film 30 can be made unnecessary.
- the depth of the slit 33 can be set to reach the insulating layer 32 as shown in FIG. 3, for example.
- color filters 36 are provided side by side at positions corresponding to the respective pixel electrodes 46, as shown in FIG. ing.
- the color filter 36 has a function of allowing transmission of light of a predetermined wavelength and absorbing light of other wavelengths.
- three color filters of R (red), G (green), and B (blue) are set.
- Each color filter 36 is arranged in the order of R, G, and B, for example.
- a light blocking layer 37 (black matrix) for blocking light from the adjacent color filter 36 side is provided, thereby preventing color mixing.
- the light shielding layer 37 is formed in a lattice shape so as to surround each color filter 36.
- a counter electrode 48 made of, for example, ITO is formed on the inner surface of the color filter 36.
- ribs 34 projections, protrusions, stepped portions
- the rib 34 protrudes from the inner surface of the counter electrode 48 toward the facing array substrate 12 and is formed in an elongated shape having a predetermined width.
- the ribs 34 are formed in a V shape in plan view, and are arranged side by side at substantially the middle positions of the adjacent slits 33 on the array substrate 12 side.
- Each rib 34 is formed such that its axial direction is substantially parallel to the extending direction of each slit 33.
- an alignment film 30 (30B) for aligning liquid crystal molecules in the liquid crystal layer 13 is formed on the inner surface side of the counter electrode 48 and the rib 34.
- the alignment film 30 (30B) is formed on the surface of the counter electrode 48 and the rib 34 that is in contact with the liquid crystal layer 13. Therefore, a step is formed on the surface of the alignment film 30 (30B) by the ribs 34 protruding from the counter electrode 48.
- the alignment state can be regulated by this step so that the liquid crystal molecules are inclined with respect to the vertical direction shown in FIG. 3 (the direction perpendicular to the surface direction of both the substrates 11 and 12). By this step, the rubbing process for the alignment film 30 can be made unnecessary.
- a defect site 50 may occur in the alignment film 30 (30A, 30B) during the manufacturing process.
- a repair layer 35 made of a repair ink is formed on the defect portion 50 of this embodiment, and the repair portion 35 repairs the defect portion 50 of the alignment film 30.
- FIG. 4 is a plan view showing the array substrate 12 when a relatively large defect 50 is generated in the manufacturing process.
- the repair layer 35 is formed in the defect portion 50, thereby completing the repair of the alignment film 30.
- FIGS. 5A to 5C are process cross-sectional views for explaining the process of forming the repair layer 35.
- a defect site 50 is found in the alignment film 30 by inspection.
- a region (repair region) 55 including the defect site 50 discovered by the inspection is defined, and then the repair stamp in which the repair ink 61 is applied to the repair region 55.
- (Repair stamp) 60 is brought closer. Specifically, the repair stamp 60 with the repair ink 61 attached to the lower surface is held by the jig 62, and the repair stamp 60 is moved to the repair area 55. Next, the repair ink 61 of the repair stamp 60 is brought into contact with the defect site 50 (arrow 65), and then the repair stamp 60 is moved (arrow 52) to apply the repair ink 61 to the defect site 50. When the application of the repair ink 61 is completed, the repair stamp 60 is moved from the repair area 55 (arrow 66).
- the repair ink 61 applied to the repair region 55 is dried (see arrow 64) to form the repair layer 35.
- the repair ink 61 is an ultraviolet curable resin
- the repair layer 35 is cured by irradiating with ultraviolet rays.
- the repair of the defect site 50 in the alignment film 30 is completed.
- the defect site 50 of the alignment film 30 (30A) on the insulating layer 32 in the array substrate 12 is illustrated, but the same is performed for the alignment film 30 (30B) in the CF substrate 11.
- FIG. 6 (a) is a diagram showing a state of the substrate (CF substrate) after repair by the repair ink examined by the inventors of the present application.
- FIG. 6B is an enlarged view around the repair region 57.
- the repair layer 35 is formed on the defect site 50 using the repair ink 61, whereby the defect site 50 is repaired.
- a peripheral edge (projection) 35b that was raised from the central portion 35a was formed around the central portion 35a of the repair layer 35.
- This peripheral portion (projection portion) 35b is a solid component (for example, polyimide component) of the material constituting the alignment film 30, and the peripheral portion 35b causes a ring-shaped spot (white spot) in the repair region 57.
- This stain causes a decrease in the contrast ratio of the liquid crystal panel.
- the stain due to the peripheral edge 35b may appear as a black stain depending on the state of light transmission.
- such a peripheral edge 35b annular stain
- certain polyimide materials for example, photo-alignment polyimide materials
- a strong solvent for example, a highly soluble solvent such as N-merylpyrrolidone (NMP)
- NMP N-merylpyrrolidone
- the repair ink 61 is applied with the repair stamp 60 to the repair region 55 including the defect site 50 as shown in FIG. 7A.
- the strong solvent contained in the repair ink 61 dissolves the alignment film 30
- a portion 30s of the alignment film 30 in contact with the repair ink 61 is dissolved as shown in FIG. 7B.
- the melted portion 30 s also becomes the repair layer 35 together with the material in the repair ink 61, so that the repair of the defective portion 50 is completed. Therefore, even if the strong solvent of the repair ink 61 dissolves the alignment film 30, there should be no problem in forming the repair layer 35.
- a peripheral portion (protrusion portion) 35b as shown in FIGS. 6A and 6B may occur in the repaired portion of the alignment film 30 made of a specific polyimide material. . Then, when this inventor examined about the mechanism which the peripheral part 35b produces, it was inferred that it might become like FIG. 8 (a) to (c).
- the repair ink 61 is applied to the repair region 55 including the defective portion 50 as shown in FIG.
- the strong solvent of the repair ink 61 dissolves the alignment film 30
- the alignment film 30 is dissolved due to the interfacial tension of the repair ink 61 or convection in the repair ink 61 as shown in FIG. 8B.
- the portions gather around the periphery of the repair ink 61 to form the protrusion 35b.
- a repair layer 35 is formed which includes a protrusion (peripheral part) 35b located at the periphery and a flat support part (center part) 35a located at the center.
- the protrusion (peripheral edge) 35b can cause a decrease in contrast ratio.
- the alignment film 30 when the alignment film 30 is formed, the alignment film 30 is formed on the surface of the substrate by discharging a coating liquid by an inkjet method.
- the coating liquid has a solid content (for example, a solid content composed of polyimide) made of the material constituting the alignment film 30, a strong solvent (for example, NMP) that dissolves the solid content, and a solid content that is stronger than the strong solvent.
- a solvent for adjustment or weak solvent having poor solubility.
- the adjusting solvent is a solvent that adjusts ink characteristics (for example, viscosity), and examples thereof include carbitol acetate and propylene carbonate.
- the repair ink 61 has a solid content concentration lower than the concentration of the solid content contained in the coating liquid, and the solvent component ratio (strong solvent / weak solvent) of the repair ink 61 is The solvent component ratio of the coating solution (strong solvent / weak solvent) is lower.
- the weak solvent ratio can be, for example, 40 to 90% (volume%).
- the solid content concentration (for example, 0.1 to 0.2%) of the repair ink 61 is preferably set to 1/10 or less of the solid content concentration (for example, 3 to 4%) of the coating liquid.
- a suitable one may be adopted in a timely manner according to the manufacturing process conditions (materials, apparatus conditions, etc.) to be used.
- the wrinkle repair ink 61 it is typically preferable in terms of management of the manufacturing process to use the same component as the coating liquid (for inkjet) or a diluted one thereof.
- the solid content concentration of the repair ink 61 is not required to be the same as that of the coating liquid (for example, 3 to 4%), and is lower than that. Things are enough.
- the restoration ink 61 is obtained by diluting the coating liquid, the solid content concentration of the restoration ink 61 is lowered, so that the strong solvent for dissolving the solid content can also be lowered.
- the inventor of the present application makes the solvent component ratio (strong solvent / weak solvent) of the repair ink 61 lower than the solvent component ratio (strong solvent / weak solvent) of the coating solution, that is, the ratio of the strong solvent.
- the solvent component ratio (strong solvent / weak solvent) of the coating solution that is, the ratio of the strong solvent.
- the repairing ink 61 is applied to repair the defective portion 50 of the alignment film 30.
- the coating liquid for inkjet
- the repair ink 61 has a solid content concentration lower than the solid content concentration of the coating liquid, and the solvent ratio (strong solvent / weak solvent) of the repair ink 61 is the solvent ratio (strong solvent / weak solvent) of the coating liquid. Lower than.
- FIGS. 9 to 11 are diagrams showing the configuration of an ink jet type coating apparatus 200 used in the manufacturing method of the present embodiment.
- FIG. 12 is a diagram illustrating a configuration of the alignment film repairing apparatus 300 according to the present embodiment.
- the coating apparatus 200 shown in FIG. 9 is an apparatus (inkjet film forming apparatus) that applies a coating liquid to the substrate 70 by an inkjet method.
- the coating apparatus 200 of this embodiment includes a head unit 72 including a nozzle (not shown) that discharges a coating solution (solution) to the substrate 70 and a stage 74 that holds the substrate 70.
- a plurality of inkjet heads are housed and arranged in the head cover 72 in the head cover.
- a plurality of nozzles are formed in one inkjet head.
- a surface (discharge surface) from which the solution is discharged from the nozzle is disposed to face the surface of the substrate 70.
- the alignment film (30) is formed on the surface of the substrate 70 by discharging the coating liquid from the head portion 72.
- the coating apparatus 200 of the present embodiment is provided with a moving device 76 that relatively moves the head portion 72 and the stage 74 (see arrows 71a and 71b).
- the head unit 72 is fixed and the stage 74 is movable.
- the stage 74 can be fixed and the head unit 72 can be movable.
- a pipe (not shown) for supplying an inkjet coating solution is connected to the head portion 72, there is a technical advantage in that the head portion 72 has a fixed configuration.
- the substrate 70 before coating is placed on the stage 74 from a transport device (not shown) that transports the substrate 70 from the previous process, and the substrate 70 after coating is moved to the subsequent process.
- a transport device not shown
- a control device 78 that controls the movement of the moving device 76 is connected to the moving device 76 of the present embodiment.
- the control device 78 is, for example, a personal computer (PC), for example, a storage device (for example, a hard disk, a semiconductor memory, an optical disk, etc.) in which a program (stage control program) that can control the movement of the moving device 76 is stored, a center An arithmetic circuit (CPU) and input / output devices (display, keyboard, mouse, etc.) are included.
- the stage 74 holding the substrate 70 can be moved in the XY direction under the control of the control device 78.
- the control device 78 of this embodiment can also control the discharge of the solution from the head unit 72.
- the height of the head unit 72 (control in the Z direction) can also be performed.
- the substrate 70 of the present embodiment is, for example, a glass substrate, and the substrate 70 of the present embodiment is a glass substrate for a liquid crystal panel.
- the substrate 70 is a mother glass before being cut out to the dimensions of the liquid crystal panel.
- the size of the mother glass as the substrate 70 is 1 meter or more on one side. Specifically, when the substrate 70 is a 10th generation mother glass, the size is 2880 mm (W) ⁇ 3130 mm (L).
- the substrate 70 is not limited to the mother glass before being cut out to the dimensions of the liquid crystal panel, but may be glass having the size of the liquid crystal panel after being cut out.
- the substrate 70 may be an array substrate on which a thin film transistor (TFT) is manufactured (or a product in the middle of manufacturing), or a CF substrate on which a color filter (CF) is formed (or a device in the middle of manufacturing thereof). It may be.
- the substrate 70 may be a resin substrate in addition to a glass substrate.
- the head portion 72 of the present embodiment has a length that crosses the substrate 70 placed on the stage 74.
- the longitudinal direction of the head portion 72 extends in the Y direction.
- the longitudinal length of the head portion 72 is about 3 meters or more.
- the coating apparatus 200 of the present embodiment forms an alignment film (30) by moving over the substrate 70 while discharging a coating liquid from a nozzle (not shown) of the head portion 72.
- the coating solution here is, for example, a polyimide solution or a solution containing polyamic acid or a derivative thereof.
- the coating liquid contains a solid content made of a material constituting the alignment film, a strong solvent (for example, NMP) that dissolves the solid content, and an adjustment solvent.
- the substrate 70 is moved along the direction in which the long side (L) or the short side (W) of the rectangular substrate 70 extends.
- the substrate 70 is also possible to move the substrate 70 with the substrate 70 inclined (arrows 71a and 71b).
- the solution (coating liquid) from the head portion 72 exhibits a predetermined wet spread, so that a specific part of the substrate 70 is obtained. This is because there is a case where it is possible to alleviate the phenomenon that it is difficult to get wet.
- FIG. 11 shows an example of the configuration of the coating apparatus 200 of the present embodiment.
- an ink jet head 73 and a nozzle 73a located on the bottom surface of the head portion 72 are shown.
- the inkjet heads 73 are not arranged in a line but are arranged so as to be diagonally arranged, but not limited thereto, other arrangements may be adopted. .
- each ink jet head 73 is formed with a plurality of nozzles 73a from which the coating liquid is discharged. For example, several hundreds of nozzles 73 a are formed in one inkjet head 73.
- sequence of the nozzle 73a shown in FIG. 11 is staggered, you may arrange the nozzle 73a in a line.
- the arrangement of the nozzles 73a is not limited to a two-stage zigzag shape, but may be another arrangement (for example, a three-stage diagonal arrangement).
- the inkjet head 73 of the head unit 72 is connected to a coating liquid supply unit (for example, a polyimide supply tank) 80 and a waste liquid unit (for example, a waste liquid tank) 82.
- a coating liquid supply unit for example, a polyimide supply tank
- a waste liquid unit for example, a waste liquid tank
- each inkjet head 73 is connected to a supply pipe 85 via a branch pipe 87 and to a waste liquid pipe 86 via a branch pipe 89.
- the supply pipe 85 is connected to the coating liquid supply part 80, while the waste liquid pipe 86 is connected to the waste liquid part 82.
- the coating liquid in the coating liquid supply unit 80 advances through the supply pipe 85 as indicated by an arrow 81 and is supplied to the inkjet head 73 through the branch pipe 87.
- the waste liquid in the ink jet head 73 passes through the branch pipe 89, travels through the waste liquid pipe 86 as indicated by an arrow 83, and moves to the waste liquid section 82.
- the valve 88 88a, 88b
- a defect site (50) may be generated in the alignment film 30 in some cases. For example, if one of the large number of nozzles 73a does not discharge the coating liquid, that part may become a defective part (50).
- An example of an apparatus for repairing the defect site (50) is shown in FIG.
- FIG. 12 schematically shows the configuration of the repair device 300 of the present embodiment.
- the repair device 300 of the present embodiment is a device that repairs the defect site 50 of the alignment film 30.
- the repair device 300 can execute a repair process using the repair ink 61 described above.
- FIG. 13 is a block diagram illustrating a configuration of the repair device 300.
- the illustrated repair device 300 includes a repair stamp 60 to which the repair ink 61 of the present embodiment is applied, a moving device 120 that moves the repair stamp 60, and a control device 110 that controls the moving device 120.
- the moving device 120 and the control device 110 are omitted.
- a stage 90 for holding a substrate (for example, an array substrate or a CF substrate) 70 having a repair region 55 is provided together with a supply box 98 for supplying the repair ink 61 of the present embodiment.
- a glass substrate on which the alignment film 30 is formed is disposed on the stage 90 as the substrate 70.
- the alignment film 30 of this embodiment is formed by the ink jet method.
- the substrate 70 may be mother glass before being cut out to the dimensions of the liquid crystal panel, or may be glass having the size of the liquid crystal panel after being cut out.
- the supply box 98 includes a cleaning unit 98 a that cleans the repair stamp 60 and an ink supply unit 98 b that supplies the repair ink 61.
- the repair ink 61 has a solid content concentration lower than the solid content concentration of the coating liquid, and the solvent ratio (strong solvent / weak solvent) of the repair ink 61 is set to the solvent ratio (strong solvent) of the coating liquid. (Solvent / weak solvent).
- a waste liquid receiving part 98c is provided below the cleaning part 98a and the ink supply part 98b. The waste liquid receiver 98c is connected to the waste liquid recovery tank 99.
- the repair stamp 60 is connected to a stamp jig 62.
- the stamp jig 62 is connected to the moving device 120, and the stamp 60 moves through the moving device 120 under the control of the control device 110 to execute a predetermined coating operation.
- the stage 90 that holds the substrate 12 can also be controlled by the control device 110, and in addition, both the stage 90 and the stamp 60 can be moved together by the control device 110. Specifically, when the stamp 60 is moved, it is possible to fix the stamp 60 and perform an interlocking operation to move the stage 90 instead.
- a storage device 112, an input device 114, and an output device 116 are connected to the control device 110 of the present embodiment.
- the control device 110 is composed of, for example, a CPU (Central Processing Unit).
- the storage device 112 is a hard disk, a semiconductor memory, an optical disk (CD, DVD, etc.), a magneto-optical disk (MO), or the like.
- the input device 114 is, for example, a keyboard, a mouse, a touch panel, and the output device 116 is a display device (liquid crystal display, CRT, organic EL display, etc.) or a printing device (laser printer, etc.).
- the control device 110, the storage device 112, the input device 114, and the output device 116 can be constructed by a personal computer (PC).
- PC personal computer
- An alignment film repair program 113 is stored in the storage device 112 connected to the control device 110.
- the alignment film repair program 113 is a program that controls the operation of the repair device 300, and includes a program that controls the movement of the repair stamp 60.
- the alignment film repair program 113 according to this embodiment includes a process including a step of moving the repair stamp 60 to the ink supply unit 98 b that supplies the repair ink 61 and a step of placing the repair stamp 60 in the repair region 55. This is a program to be executed. More specifically, the alignment film repair program 113 of the present embodiment is a program for executing operations indicated by arrows 91 to 97 (described later) and an arrow 52 in FIG.
- the repair device 300 of the present embodiment includes an inspection device 130 that inspects the defect site 50 of the alignment film 30.
- the inspection device 130 is connected to the control device 110, and data on the defect site 50 detected by the inspection device 130 is output to the control device 110 and the storage device 112.
- the inspection device 130 includes an image sensor (for example, a CCD or a CMOS image sensor).
- the inspection device 130 also includes software for detecting the defect site 50 from the image data obtained by the image sensor, but this software can also be stored in the storage device 112. Further, the process of defining the repair region 55 from the data of the defect site 50 can be performed by the control device 110 or can be performed by the inspection device 130.
- the specific configuration of the inspection device 130 is not particularly limited as long as it has a function of detecting the defect site 50 of the alignment film 30, and a suitable one may be adopted as appropriate. it can.
- each element which comprises the repair apparatus 300 of this embodiment is not restricted to an electrical connection, For example, a wireless connection, an optical connection, etc. are employable.
- the control device 110 and the storage device 112 can be integrated, and the input device 114 and the output device 116 can be integrated (for example, a touch panel display).
- a part of the connection can be made via the Internet.
- the connection between the control device 110 and the storage device 112 is made via the Internet. It is also possible to use a hard disk or the like in a server at a location remote from 110.
- the following operation may be performed.
- the movement of the repair stamp 60 is executed by the moving device 120 controlled by the control device 110.
- the moving device 120 of the present embodiment can move the repair stamp 60 in any of the X direction, the Y direction, and the Z direction.
- the repair stamp 60 is first cleaned by bringing the bottom surface of the repair stamp 60 into contact with the cleaning section 98a (see arrow 91).
- the cleaning unit 98a contains a cleaning solvent (for example, N-methylpyrrolidone). Thereafter, the cleaned repair stamp 60 is moved (see arrow 92), and then the bottom surface of the repair stamp 60 is brought into contact with the ink supply unit 98b (see arrow 93). Then, the repair ink 61 adheres to the repair stamp 60.
- a cleaning solvent for example, N-methylpyrrolidone
- the repair stamp 60 with the repair ink 61 attached is moved and placed above the stage 90 (see arrow 94).
- the repair stamp 60 then moves to the repair region 55 of the substrate 12 (arrow 95) where a repair process is performed (arrow 52) to form the repair layer 35.
- An example of a more detailed repair process is as described with reference to FIGS.
- the repair stamp 60 that has run out of the repair ink 61 moves (see arrow 96) and returns to the ink supply unit 98b (see arrow 97) for the next repair process.
- the repairing ink 61 is replenished by the ink supply unit 98b (see arrow 93), and thereafter the same processing may be performed again.
- FIGS. 2 and 3 the structure in which the slit 33 and the rib 34 are formed is shown.
- a slit 33 and the rib 34 are formed. It is also applicable to structures that are not.
- the alignment film 30 of the present embodiment it is possible to use a photo-alignment film whose alignment direction is defined by light irradiation.
- a method of defining the pretilt direction of the liquid crystal molecules using a photo-alignment method can also be used.
- the photo-alignment method sets the pretilt angle by irradiating the photo-alignment film with polarized light.
- the photo-alignment method is a non-contact process because a light irradiation step that defines the alignment direction by light irradiation is performed. Therefore, there is an advantage that static electricity is not generated.
- the non-defective array substrate 12 and the non-defective CF substrate 11 are opposed to each other, and the liquid crystal layer 13 is formed between the CF substrate 11 and the array substrate 12.
- the liquid crystal layer 13 can be formed using, for example, a dropping injection method.
- the technology according to the embodiment of the present invention is not limited to the liquid crystal panel in which the liquid crystal molecules constituting the liquid crystal layer 13 are vertically aligned, but can also be applied to the repair of the alignment film 30 of liquid crystal panels other than the vertical alignment type.
- the configuration of the backlight 20 of the liquid crystal display device 100 is not limited to the direct type shown in FIG. 1, but may be another configuration (for example, an edge light method).
Abstract
Description
なお、本出願は2010年4月7日に出願された日本国特許出願2010-88340号に基づく優先権を主張しており、その出願の全内容は本明細書中に参照として組み入れられている。 The present invention relates to a method for manufacturing a liquid crystal panel, a liquid crystal panel, and a repair device. In particular, it relates to a technique for repairing alignment films of liquid crystal panels.
Note that this application claims priority based on Japanese Patent Application No. 2010-88340 filed on Apr. 7, 2010, the entire contents of which are incorporated herein by reference. .
(1)配向膜の成膜工程で混入した異物が付着し、その異物を除去することに伴って配向膜が局所的に切り欠かれてピンホールが生じる。
(2)配向膜の下地(画素電極または対向電極など)に対する貼着性が局所的に悪く、その部分で成膜時に配向膜材料がはじかれて、ピンホールが生じる。
(3)配向膜材料として、液晶分子を垂直配向させるものを用いた場合、配向膜の下地に対する貼着性が悪くなる傾向にあり、上記(2)と相まってピンホールが生じやすくなる。
(4)配向膜の下地に凹部または凸部を形成し、配向膜の表面に段差をつけることで、液晶分子の配向状態を規制するようにした場合、下地に対する配向膜の敷設面積が大きくなり、上記(2)と相まってピンホールが生じやすくなる。 In this alignment film, local pinholes may occur due to the following circumstances.
(1) A foreign substance mixed in the alignment film forming process adheres, and the alignment film is locally cut off as the foreign substance is removed, thereby generating a pinhole.
(2) The adhesion of the alignment film to the underlying layer (pixel electrode or counter electrode) is locally poor, and the alignment film material is repelled at the time of film formation, resulting in a pinhole.
(3) When a material that vertically aligns liquid crystal molecules is used as the alignment film material, the sticking property of the alignment film to the underlying layer tends to deteriorate, and pinholes are likely to occur in combination with (2) above.
(4) If the alignment state of the liquid crystal molecules is regulated by forming recesses or protrusions on the base of the alignment film and providing a step on the surface of the alignment film, the laying area of the alignment film on the base increases. In combination with (2), pinholes are likely to occur.
ある好適な実施形態において、前記修復インクの固形分濃度は、前記塗布液の固形分濃度の1/10以下である。
ある好適な実施形態では、前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)は、50/50である。
本発明に係る液晶パネルは、互いに対向する一対の基板と、前記一対の基板の間に配置された液晶層とを備え、前記基板のうち前記液晶層に接する面には配向膜が形成されており、前記配向膜の欠損部位には、修復層が形成されており、前記配向膜は、インクジェット方式で塗布液を吐出することによって形成されており、前記修復層は、修復インクを付与することによって形成されており、前記塗布液は、前記配向膜を構成する材料からなる固形分と、前記固形分を溶解する強溶媒と、前記強溶媒よりも前記固形分に対する溶解性の劣る調整用溶媒とを含み、前記修復インクは、前記塗布液に含まれている前記固形分の濃度よりも低い固形分濃度を有し、かつ、前記修復インクは、前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)よりも低い溶媒割合(強溶媒/調整用溶媒)を有する。
本発明に係る修復装置は、配向膜の欠損部位を修復する装置であり、修復スタンプと、前記修復スタンプを移動させる移動装置と、前記移動装置を制御する制御装置とを備え、前記制御装置は、修復インクを供給するインク供給部に、前記修復スタンプを移動するステップと、前記配向膜の前記欠損部位を含む領域に、前記修復スタンプを配置するステップとを実行するように、前記修復スタンプの移動を制御し、前記配向膜は、インクジェット方式で塗布液を吐出することによって形成されており、前記塗布液は、前記配向膜を構成する材料からなる固形分と、前記固形分を溶解する強溶媒と、前記強溶媒よりも前記固形分に対する溶解性の劣る調整用溶媒とを含み、前記修復インクは、前記塗布液に含まれている前記固形分の濃度よりも低い固形分濃度を有し、かつ、前記修復インクは、前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)よりも低い溶媒割合(強溶媒/調整用溶媒)を有する。
ある好適な実施形態では、さらに、前記配向膜の欠損部位を検査する検査装置を備えている。 The method for producing a liquid crystal panel according to the present invention includes a step of forming an alignment film on the surface of the substrate by discharging a coating liquid by an ink jet method, and a step of repairing a defective portion of the alignment film by applying a repair ink. The coating solution in the step of forming the alignment film includes a solid content made of a material constituting the alignment film, a strong solvent that dissolves the solid content, and a dissolution in the solid content rather than the strong solvent. And the repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and the repair ink is adjusted in the coating liquid. The solvent ratio (strong solvent / adjusting solvent) is lower than the solvent ratio of the strong solvent to the working solvent (strong solvent / adjusting solvent).
In a preferred embodiment, the solid concentration of the repair ink is 1/10 or less of the solid concentration of the coating liquid.
In a preferred embodiment, the solvent ratio of the strong solvent to the adjusting solvent in the coating solution (strong solvent / adjusting solvent) is 50/50.
A liquid crystal panel according to the present invention includes a pair of substrates facing each other and a liquid crystal layer disposed between the pair of substrates, and an alignment film is formed on a surface of the substrate in contact with the liquid crystal layer. In addition, a repair layer is formed in the defect portion of the alignment film, and the alignment film is formed by ejecting a coating liquid by an ink jet method, and the repair layer applies a repair ink. The coating solution is a solid content made of a material constituting the alignment film, a strong solvent that dissolves the solid content, and an adjustment solvent that is less soluble in the solid content than the strong solvent. The repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and the repair ink is a strong solvent for the adjustment solvent in the coating liquid. Solvent ratio Than strong solvent / adjustment solvent) having a low solvent percentage (strong solvent / adjustment solvent).
A repair device according to the present invention is a device for repairing a defective portion of an alignment film, and includes a repair stamp, a moving device that moves the repair stamp, and a control device that controls the moving device, and the control device includes: Moving the repair stamp to an ink supply unit that supplies repair ink, and disposing the repair stamp in a region including the defect portion of the alignment film. The alignment film is formed by discharging a coating liquid by an ink jet method, and the coating liquid includes a solid content made of a material constituting the alignment film, and a strength that dissolves the solid content. A solvent and a solvent for adjustment that is less soluble in the solid content than the strong solvent, and the repair ink is more than the concentration of the solid content contained in the coating liquid. The restoration ink has a lower solvent ratio (strong solvent / adjusting solvent) than the solvent ratio of the strong solvent to the adjusting solvent (strong solvent / adjusting solvent) in the coating liquid. Have.
In a preferred embodiment, an inspection apparatus for inspecting a defective portion of the alignment film is further provided.
11 CF基板
12 アレイ基板
15 シール材
17、18 偏光板
20 バックライト
22 光源
24 ケース
26 光学シート
28 フレーム
29 ベゼル
30 配向膜
31 絶縁層
32 絶縁層
33 スリット
34 リブ
35 修復層
35a 中央部(平担部)
35b 周縁部(突起部)
36 カラーフィルタ
37 遮光層
41 ソース配線
42 ゲート配線
44 スイッチング素子
46 画素電極
48 対向電極
50 欠損部位
55 修復領域
57 修復領域
60 修復スタンプ
61 修復インク
62 スタンプ用治具
70 基板
72 ヘッド部
73 インクジェットヘッド
73a ノズル
74 ステージ
76 移動装置
78 制御装置
80 塗布液供給部
82 廃液部
85 供給配管
86 廃液配管
87 分岐配管
88 バルブ
89 分岐配管
90 ステージ
98 供給ボックス
98a 洗浄部
98b インク供給部
98c 廃液受け部
99 廃液回収タンク
100 液晶表示装置
110 制御装置
112 記憶装置
113 配向膜修復プログラム
114 入力装置
116 出力装置
120 移動装置
130 検査装置
200 塗布装置
300 修復装置 DESCRIPTION OF
35b Perimeter (projection)
36
Claims (6)
- 液晶パネルの製造方法であって、
インクジェット方式で塗布液を吐出することによって基板の表面に配向膜を形成する工程と、
修復インクを付与することによって前記配向膜の欠損部位を修復する工程と
を含み、
前記配向膜を形成する工程における前記塗布液は、
前記配向膜を構成する材料からなる固形分と、
前記固形分を溶解する強溶媒と、
前記強溶媒よりも前記固形分に対する溶解性の劣る調整用溶媒と
を含み、
前記修復インクは、前記塗布液に含まれている前記固形分の濃度よりも低い固形分濃度を有し、かつ、
前記修復インクは、前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)よりも低い溶媒割合(強溶媒/調整用溶媒)を有することを特徴とする、液晶パネルの製造方法。 A method of manufacturing a liquid crystal panel,
Forming an alignment film on the surface of the substrate by discharging a coating solution by an inkjet method; and
Repairing the defective portion of the alignment film by applying a repair ink, and
The coating solution in the step of forming the alignment film is:
A solid content made of a material constituting the alignment film;
A strong solvent that dissolves the solids;
A solvent for adjustment that is less soluble in the solid content than the strong solvent, and
The repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and
The repair ink has a solvent ratio (strong solvent / adjusting solvent) lower than a solvent ratio (strong solvent / adjusting solvent) of the strong solvent to the adjusting solvent in the coating liquid. Production method. - 前記修復インクの固形分濃度は、前記塗布液の固形分濃度の1/10以下である、請求項1に記載の液晶パネルの製造方法。 The method for producing a liquid crystal panel according to claim 1, wherein the solid content concentration of the repair ink is 1/10 or less of the solid content concentration of the coating liquid.
- 前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)は、50/50である、請求項1または2に記載の液晶パネルの製造方法。 The method for producing a liquid crystal panel according to claim 1 or 2, wherein the solvent ratio of the strong solvent to the solvent for adjustment in the coating solution (strong solvent / solvent for adjustment) is 50/50.
- 互いに対向する一対の基板と、
前記一対の基板の間に配置された液晶層とを備え、
前記基板のうち前記液晶層に接する面には配向膜が形成されており、
前記配向膜の欠損部位には、修復層が形成されており、
前記配向膜は、インクジェット方式で塗布液を吐出することによって形成されており、
前記修復層は、修復インクを付与することによって形成されており、
前記塗布液は、
前記配向膜を構成する材料からなる固形分と、
前記固形分を溶解する強溶媒と、
前記強溶媒よりも前記固形分に対する溶解性の劣る調整用溶媒と
を含み、
前記修復インクは、前記塗布液に含まれている前記固形分の濃度よりも低い固形分濃度を有し、かつ、
前記修復インクは、前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)よりも低い溶媒割合(強溶媒/調整用溶媒)を有することを特徴とする、液晶パネル。 A pair of substrates facing each other;
A liquid crystal layer disposed between the pair of substrates,
An alignment film is formed on the surface of the substrate in contact with the liquid crystal layer,
A repair layer is formed in the defect portion of the alignment film,
The alignment film is formed by discharging a coating liquid by an inkjet method,
The repair layer is formed by applying a repair ink,
The coating liquid is
A solid content made of a material constituting the alignment film;
A strong solvent that dissolves the solids;
A solvent for adjustment that is less soluble in the solid content than the strong solvent, and
The repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and
The liquid crystal panel, wherein the repair ink has a solvent ratio (strong solvent / adjusting solvent) lower than a solvent ratio (strong solvent / adjusting solvent) of the strong solvent to the adjusting solvent in the coating liquid. - 配向膜の欠損部位を修復する装置であって、
修復スタンプと、
前記修復スタンプを移動させる移動装置と、
前記移動装置を制御する制御装置と
を備え、
前記制御装置は、
修復インクを供給するインク供給部に、前記修復スタンプを移動するステップと、
前記配向膜の前記欠損部位を含む領域に、前記修復スタンプを配置するステップと
を実行するように、前記修復スタンプの移動を制御し、
前記配向膜は、インクジェット方式で塗布液を吐出することによって形成されており、
前記塗布液は、
前記配向膜を構成する材料からなる固形分と、
前記固形分を溶解する強溶媒と、
前記強溶媒よりも前記固形分に対する溶解性の劣る調整用溶媒と
を含み、
前記修復インクは、前記塗布液に含まれている前記固形分の濃度よりも低い固形分濃度を有し、かつ、
前記修復インクは、前記塗布液における調整用溶媒に対する強溶媒の溶媒割合(強溶媒/調整用溶媒)よりも低い溶媒割合(強溶媒/調整用溶媒)を有することを特徴とする、修復装置。 An apparatus for repairing a defective portion of an alignment film,
Repair stamp and
A moving device for moving the repair stamp;
A control device for controlling the moving device,
The control device includes:
Moving the repair stamp to an ink supply that supplies repair ink;
Controlling the movement of the repair stamp so as to perform the step of placing the repair stamp in a region including the defect portion of the alignment film,
The alignment film is formed by discharging a coating liquid by an inkjet method,
The coating liquid is
A solid content made of a material constituting the alignment film;
A strong solvent that dissolves the solids;
A solvent for adjustment that is less soluble in the solid content than the strong solvent, and
The repair ink has a solid content concentration lower than the solid content concentration contained in the coating liquid, and
The repairing apparatus, wherein the repairing ink has a solvent ratio (strong solvent / adjusting solvent) lower than a solvent ratio (strong solvent / adjusting solvent) of the strong solvent to the adjusting solvent in the coating liquid. - さらに、前記配向膜の欠損部位を検査する検査装置を備えている、請求項5に記載の修復装置。 The repair device according to claim 5, further comprising an inspection device for inspecting a defective portion of the alignment film.
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JPH09105937A (en) * | 1995-10-09 | 1997-04-22 | Toshiba Corp | Formation of oriented film of liquid crystal display element |
JPH09166783A (en) * | 1995-10-09 | 1997-06-24 | Toshiba Corp | Method and device to form orienting film of liquid crystal display element |
JP2006154158A (en) * | 2004-11-29 | 2006-06-15 | Hitachi Displays Ltd | Method for manufacturing liquid crystal alignment layer and liquid crystal display element |
WO2007132586A1 (en) * | 2006-05-16 | 2007-11-22 | Sharp Kabushiki Kaisha | Process for manufacturing display panel, display panel manufacturing apparatus and display panel |
WO2009054174A1 (en) * | 2007-10-22 | 2009-04-30 | Sharp Kabushiki Kaisha | Method for production of substrate for liquid crystal panel, and apparatus for production of substrate for liquid crystal panel |
-
2011
- 2011-04-04 CN CN201180012524.7A patent/CN102792215B/en not_active Expired - Fee Related
- 2011-04-04 WO PCT/JP2011/058545 patent/WO2011125982A1/en active Application Filing
- 2011-04-04 JP JP2012509654A patent/JP5718902B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09105937A (en) * | 1995-10-09 | 1997-04-22 | Toshiba Corp | Formation of oriented film of liquid crystal display element |
JPH09166783A (en) * | 1995-10-09 | 1997-06-24 | Toshiba Corp | Method and device to form orienting film of liquid crystal display element |
JP2006154158A (en) * | 2004-11-29 | 2006-06-15 | Hitachi Displays Ltd | Method for manufacturing liquid crystal alignment layer and liquid crystal display element |
WO2007132586A1 (en) * | 2006-05-16 | 2007-11-22 | Sharp Kabushiki Kaisha | Process for manufacturing display panel, display panel manufacturing apparatus and display panel |
WO2009054174A1 (en) * | 2007-10-22 | 2009-04-30 | Sharp Kabushiki Kaisha | Method for production of substrate for liquid crystal panel, and apparatus for production of substrate for liquid crystal panel |
Also Published As
Publication number | Publication date |
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CN102792215A (en) | 2012-11-21 |
JPWO2011125982A1 (en) | 2013-07-11 |
CN102792215B (en) | 2015-09-16 |
JP5718902B2 (en) | 2015-05-13 |
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