WO2006075589A1 - ディスプレイパネルの製造方法およびディスプレイパネル用基板の支持台 - Google Patents
ディスプレイパネルの製造方法およびディスプレイパネル用基板の支持台 Download PDFInfo
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- WO2006075589A1 WO2006075589A1 PCT/JP2006/300173 JP2006300173W WO2006075589A1 WO 2006075589 A1 WO2006075589 A1 WO 2006075589A1 JP 2006300173 W JP2006300173 W JP 2006300173W WO 2006075589 A1 WO2006075589 A1 WO 2006075589A1
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- support base
- substrate
- thermal expansion
- support
- display panel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/241—Manufacture or joining of vessels, leading-in conductors or bases the vessel being for a flat panel display
Definitions
- the present invention relates to a manufacturing method for suppressing the surface of a panel from being damaged and a display panel substrate support in a display panel manufacturing process.
- a plasma display panel (hereinafter referred to as a PDP or a panel) as a display panel has a structure in which peripheral portions of a front panel and a rear panel arranged opposite to each other are sealed with a sealing member.
- a discharge gas such as neon and xenon is sealed in the discharge space formed between the two.
- the front panel includes a plurality of display electrode pairs formed of scan electrodes and sustain electrodes formed in a stripe shape on one surface of a glass substrate, and a dielectric layer and a protective layer that cover these display electrode pairs.
- Each of the display electrode pairs is composed of a transparent electrode and an auxiliary electrode made of a metal material formed on the transparent electrode.
- the rear panel has a plurality of address electrodes formed in a stripe shape in a direction orthogonal to the display electrode pair on one side of the other glass substrate, a base dielectric layer covering these address electrodes, and an address electrode for discharging space.
- Stripe-like partition walls that are divided every time, and red, green, and blue phosphor layers sequentially applied to the grooves between the barrier ribs.
- the display electrode pair and the address electrode are orthogonal to each other, and the intersection thereof becomes a discharge cell. These discharge cells are arranged in a matrix, and three discharge cells having red, green, and blue phosphor layers arranged in the direction of the display electrode pair become pixels for color display.
- the PDP sequentially applies a predetermined voltage between the scan electrode and the address electrode and between the scan electrode and the sustain electrode to generate a gas discharge, and the phosphor layer is excited by the ultraviolet rays generated by the gas discharge to emit light. Display a color image.
- components such as a display electrode pair and a dielectric layer are formed on the front glass substrate, and an address electrode, a base dielectric layer, a partition wall, and a phosphor are formed on the rear glass substrate.
- Components such as layers are arranged in a predetermined shape and pattern. These are it Each material is applied on a glass substrate, and is formed by firing after predetermined patterning by a photolithography method or a sandblasting method, if necessary.
- each component is formed on the glass substrate by firing and solidifying.
- a glass substrate is placed on a support base, and the material layer is fired together with the support base in a baking furnace. Since the temperature inside the firing furnace is as high as 500 ° C to 600 ° C, Neoceram N-0 or N-11 (trade name of Nippon Electric Glass Co., Ltd.) is used as a ceramic material with high heat resistance on the support base. High strain point glass is used for the glass substrate.
- An example of preventing misalignment between the support base and the glass substrate during such a firing process is disclosed in Japanese Patent Application Laid-Open No. 2003-51251.
- the display panel manufacturing method of the present invention includes a material layer forming step of forming a material layer on a substrate, and a firing step of placing the substrate on which the material layer is formed on a support base and heating and firing.
- the support base is composed of a first support base and a second support base placed on the first support base, and a thermal expansion coefficient and a basis of the second support base.
- the difference between the thermal expansion coefficient of the plate is set to be smaller than the difference between the thermal expansion coefficient of the first support base and the thermal expansion coefficient of the substrate.
- the substrate is placed on the second support table so that the support table exists, and then heated and fired.
- the substrate in the firing step, is placed on the second support base having a small difference in thermal expansion coefficient from the substrate, and the second support base is disposed around the substrate. Since it exists, it suppresses the generation of scratches on the substrate surface caused by the difference in thermal expansion between the support base and the substrate, and also prevents the generation of scratches that the substrate is rubbed by the end of the second support base, High quality display panels can be provided.
- FIG. 1 is a perspective view showing a structure of a PDP.
- FIG. 2A is a plan view showing a configuration of a support base used in the method for manufacturing a display panel in the first embodiment of the present invention.
- FIG. 2B is a front view showing the configuration of the support base used in the method for manufacturing the display panel in the first embodiment of the present invention.
- FIG. 3 is used in a display panel manufacturing method according to a second embodiment of the present invention.
- FIG. 4 is used in a method for manufacturing a display panel according to a second embodiment of the present invention.
- FIG. 5 is a diagram showing a display panel manufacturing method according to a third embodiment of the present invention.
- FIG. 6A is a plan view showing a modified example of the structure of the support base used in the display panel manufacturing method in the third embodiment of the present invention.
- FIG. 6B is a front view showing a modified example of the structure of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- FIG. 7A is a plan view showing a modification of the configuration of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- FIG. 7B is a cross-sectional view taken along line 7B-7B of FIG. 7A.
- FIG. 8A is a plan view showing a modification of the configuration of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- FIG. 8B is a cross-sectional view taken along line 8B-8B of FIG. 8A.
- FIG. 9A shows a method for manufacturing a display panel according to a third embodiment of the present invention. It is a top view which shows the modification of a structure of the support stand used for.
- FIG. 9B is a cross-sectional view taken along line 9B-9B of FIG. 9A.
- FIG. 10A is a plan view showing a modification of the configuration of the support base used in the method for manufacturing the display panel in the third embodiment of the present invention.
- FIG. 10B is a cross-sectional view taken along line 10B-10B of FIG. 10A.
- FIG. 11A is a plan view showing a modified example of the structure of the support base used in the method for manufacturing the display panel in the fourth embodiment of the present invention.
- FIG. 11B is a cross-sectional view in the X direction of FIG. 11A.
- FIG. 11C is a cross-sectional view in the y direction of FIG. 11A.
- FIG. 12A is a plan view showing a modified example of the structure of the support base used in the method of manufacturing the display panel in the fourth embodiment of the present invention.
- FIG. 12B is a cross-sectional view in the X direction of FIG. 11A.
- FIG. 13A is a plan view showing a modified example of the structure of the support base used in the method for manufacturing the display panel in the fourth embodiment of the present invention.
- FIG. 13B is a cross-sectional view in the X direction of FIG. 13A.
- FIG. 13C is a cross-sectional view in the y direction of FIG. 13A.
- FIG. 14A is a plan view showing the structure of a support base used in the method for manufacturing a display panel in the fifth embodiment of the present invention.
- FIG. 14B is a cross-sectional view taken along line 14B-14B of FIG. 14A.
- FIG. 15A is a cross-sectional view showing details of part c in FIG. 14A.
- FIG. 15B is a plan view showing details of a portion c in FIG. 14A.
- FIG. 16 is a plan view showing a configuration in the case where the support is used in the display panel manufacturing method according to the fifth embodiment of the present invention, and no restriction portion is provided.
- FIG. 17 is a plan view showing a configuration of a support base used in the method for manufacturing a display panel in the sixth embodiment of the present invention.
- FIG. 18 is a plan view showing a configuration of a support base used in the method for manufacturing a display panel in the seventh embodiment of the present invention.
- FIG. 19 shows a method for manufacturing a display panel in the eighth embodiment of the invention. It is a top view which shows the structure of the support stand to be used.
- FIG. 20A is a plan view showing a structure of a support base used in a conventional display panel manufacturing method.
- FIG. 20B is a front view showing the structure of the support base used in the conventional method of manufacturing a display panel.
- the present invention can be applied to a display panel having a process of forming a material layer as a component on a glass substrate such as PDP and baking and solidifying them.
- PDP is an example. I will explain to you.
- FIG. 1 is a perspective view showing the structure of a PDP.
- the basic structure of the PDP is the same as that of a general AC surface discharge type PDP.
- the PDP 1 has a front panel 2 made of a front glass substrate 3 and a rear panel 10 made of a rear glass substrate 11 facing each other, and its outer peripheral portion is sealed with a force such as a glass frit. It is hermetically sealed with a landing member.
- the discharge space 16 inside the sealed PDP 1 has discharge gas such as neon (Ne) and xenon (Xe). 400 ⁇ ⁇ : sealed at a pressure of ⁇ 600 Torr!
- a pair of stripe-shaped display electrodes 6 and black stripes (light-shielding layers) 7 composed of scan electrodes 4 and sustain electrodes 5 are parallel to each other. Multiple rows are arranged. Furthermore, a dielectric layer 8 that acts as a powerful capacitor, such as Pb—B-based glass, is formed so as to cover these display electrodes 6 and the light shielding layer 7, and on the surface thereof, magnesium oxide (MgO) is formed. A protective layer 9 is also formed, which also has strength.
- a plurality of striped address electrodes 12 are arranged in parallel to each other in a direction orthogonal to the scan electrodes 4 and the sustain electrodes 5. Is covered with a base dielectric layer 13. Further, a partition wall 14 having a predetermined height is formed on the underlying dielectric layer 13 between the address electrodes 12 to divide the discharge space 16. For each address electrode 12, a phosphor layer 15 that emits red, green, and blue light is sequentially applied to the grooves between the barrier ribs 14 by the ultraviolet rays. Discharge cells are formed at the positions where scan electrode 4, sustain electrode 5 and address electrode 12 intersect, and discharge cells having red, green, and blue phosphor layers 15 aligned in the direction of display electrode 6 are displayed in color. It becomes a pixel for.
- the scan electrode 4, the sustain electrode 5, and the light shielding layer 7 are formed on one main surface of the front glass substrate 3.
- the scanning electrode 4 and the sustaining electrode 5 are formed of transparent electrodes having a force, such as indium stannate (ITO) and tin oxide (SnO), and formed thereon.
- the light-shielding layer 7 is also formed by screen printing a black pigment-containing base or by forming a black pigment on the entire surface of the glass substrate, patterning it using a photolithographic method, and baking and solidifying it.
- a dielectric paste layer (dielectric material layer) is applied by applying a dielectric paste on the front glass substrate 3 by a die coating method or the like so as to cover the scan electrode 4, the sustain electrode 5 and the light shielding layer 7. Form. After applying the dielectric paste, the surface of the applied dielectric paste is leveled by leaving it to stand for a predetermined time, so that a flat surface is obtained. Thereafter, the dielectric paste layer is baked and solidified to cover the scan electrode 4, the sustain electrode 5, and the light shielding layer 7. 8 is formed.
- the dielectric paste is a paint containing a dielectric material such as glass powder, a noinder and a solvent.
- a protective layer 9 made of magnesium oxide (MgO) is formed on the dielectric layer 8 by a vacuum deposition method.
- predetermined components scanning electrode 4, sustaining electrode 5, light shielding layer 7, dielectric layer 8, and protective layer 9) are formed on front glass substrate 3, and front panel 2 is completed.
- the back panel 10 is formed as follows.
- the structure for the address electrode 12 is formed by a method in which a silver paste is screen-printed on one main surface of the rear glass substrate 11 or a method in which a metal film is formed on the entire surface and then patterned using a photolithography method.
- An address electrode 12 is formed by forming a material layer to be an object and baking and solidifying the material layer at a predetermined temperature.
- a dielectric paste layer is formed on the rear glass substrate 11 on which the address electrodes 12 are formed by applying a dielectric paste so as to cover the address electrodes 12 by a die coat method or the like. Thereafter, the dielectric paste layer is fired to form the base dielectric layer 13.
- the dielectric paste is a paint containing a dielectric material such as glass powder, a binder and a solvent.
- a partition wall forming paste containing a partition wall material is applied onto the underlying dielectric layer 13 and patterned into a predetermined shape to form a partition wall material layer, and then fired and solidified to form the partition wall 14.
- a method of patterning the partition wall paste applied onto the underlying dielectric layer 13 a photolithography method or a sandblast method can be used.
- the phosphor layer 15 is formed by applying a phosphor paste containing a phosphor material on the base dielectric layer 13 between the adjacent barrier ribs 14 and on the side faces of the barrier ribs 14 and baking and solidifying the phosphor paste.
- the rear panel 10 having predetermined components on the rear glass substrate 11 is completed.
- the front panel 2 and the back panel 10 having predetermined constituent members are arranged to face each other so that the scanning electrodes 4 and the address electrodes 12 are orthogonal to each other, and the periphery thereof is sealed with glass frit.
- PDP1 is completed by filling discharge space 16 with discharge gas containing neon, xenon, and the like.
- the metal bus electrodes on the front glass substrate 3 are made of materials for the respective constituent members. It is produced by coating on the glass substrate 3 or the back glass substrate 11, forming a predetermined pattern as necessary, and then baking and solidifying. The firing process is performed at 500 ° C. to 600 ° C. for each constituent member, and at least twice for the front panel 2 and four times for the rear panel 10 are required.
- FIG. 20A and FIG. 20B are diagrams showing the structure of a support base used in a conventional method for manufacturing a display panel.
- 20A is a plan view
- FIG. 20B is a front view.
- the glass substrate 200 is arranged on the support base 210 so that the surface on which the components 220 such as various electrodes and material layers are formed is the upper surface, and the surface of the glass substrate 200 and the support base 210 are in contact with each other. .
- scratches are generated on the surface of the glass substrate 200 in contact with the support base 210.
- This scratch is caused by the difference between the thermal expansion amount of the support base 210 and the thermal expansion amount of the glass substrate 200 in the firing process.
- the coefficient of thermal expansion of the heat-resistant ceramic used as the support base 210 (1. 4 X 10 _6 Z ° C) and the coefficient of thermal expansion of the glass substrate 200 ( 8.3 X 10 _6 Z ° C). Since there is a large difference between them, if the glass substrate 200 is placed on the support base 210 and placed in a firing furnace and baked, the thermal expansion amount of the support base 210 and the thermal expansion amount of the glass substrate 200 will be greatly different. . On the other hand, the difference between these thermal expansion amounts increases in proportion to the substrate size.
- the glass substrate 200 thermally expands radially around the center point 230 in the direction of thermal expansion, and thus the glass substrate 200 and the support base 210 are rubbed.
- the linear flaw due to the laser beam spreads radially from the central point 230 of the glass substrate 200.
- the center point 230 in the direction of thermal expansion coincides with the center of gravity of the glass substrate 200, and the maximum length of the linear flaw is It is calculated from the difference in thermal expansion amount and the substrate size.
- the maximum value of the length of the linear scratch is expressed by (difference in thermal expansion coefficient between the glass substrate 200 and the support base 210) X (firing temperature) X (substrate size).
- X difference in thermal expansion coefficient between the glass substrate 200 and the support base 210)
- X firing temperature
- substrate size substrate size
- PDP size: 980mm X 554mm
- the maximum length of linear scratches generated on the substrate 200 is 3.4 mm. Since the linear scratches on the glass substrate 200 can be easily seen when they are 1 mm or more, and in some cases 0.7 mm or more, such scratches significantly reduce the display quality.
- FIG. 2A and FIG. 2B are diagrams showing a configuration of a support base used in the display panel manufacturing method according to the first embodiment of the present invention, and showing a state where a substrate is placed on the support base.
- FIG. 2A is a plan view thereof
- FIG. 2B is a side view thereof.
- the support table 20 includes a first support table 21 and a second support table 22, and a substrate 23 is placed on the second support table 22.
- the substrate 23 is the front glass substrate 3 or the rear glass substrate 11 on which the PDP components are formed, and these components are formed on the surface of the substrate 23 opposite to the surface in contact with the second support base 22. Has been. Therefore, the substrate 23 is placed on the first support base 21 via the second support base 22.
- the second support base 22 is a thin metal plate that has a force such as metal, and the difference between the thermal expansion coefficient of the second support base 22 and the thermal expansion coefficient of the substrate 23 is the thermal expansion of the first support base 21. It is set smaller than the difference between the coefficient and the thermal expansion coefficient of the substrate 23.
- the absolute value of the difference between the thermal expansion coefficient of the second support base 22 and the thermal expansion coefficient of the substrate 23 is the absolute value of the difference between the thermal expansion coefficient of the substrate 23 and the thermal expansion coefficient of the first support base 21.
- the metal thin plate constituting the second support base 22 is selected so that it is less than half of the value, preferably 1Z10 or less.
- the metal thin plate for example, titanium or a titanium alloy can be used.
- a second support base 22 exists around the substrate 23. That is, the outer peripheral portion of the second support base 22 placed on the first support base 21 is always positioned outside the outer peripheral portion of the substrate 23 placed on the second support base 22. . [0030] In this way, the substrate 23 is placed on the support base 20, and the PDP components formed on the substrate 23 are fired in a heating and firing furnace. As described above, in the conventional example in which the substrate 23 is placed directly on the first support base 21 and fired, the surface of the substrate 23 in contact with the first support base 21 is damaged.
- the cause of such scratches is the difference between the thermal expansion amount of the first support base 21 and the thermal expansion amount of the substrate 23 during firing, and the heat-resistant ceramic used as the first support base 21 has thermal expansion.
- the coefficient is very small
- the front glass substrate 3 and rear glass substrate 11 used as the substrate 23 have a coefficient of thermal expansion that is an order of magnitude greater than that of heat-resistant ceramics. Have. For this reason, when the substrate 23 is placed on the first support 21 and put into a firing furnace for firing, the amount of thermal expansion of the first support 21 and the amount of thermal expansion of the substrate 23 are greatly different.
- the substrate 23 to be baked becomes considerably large, so the heat of the first support 21
- the second support base 22 is mounted on the first support base 21 and the substrate 23 is mounted on the second support base 22.
- the material layer of the PDP component formed on the substrate 23 is fired in a state where it is put into a firing furnace.
- the difference between the thermal expansion coefficient of the second support base 22 and the thermal expansion coefficient of the substrate 23 is smaller than the difference between the thermal expansion coefficients of the first support base 21 and the substrate 23. 2
- the differential force S between the thermal expansion amount of the support base 22 and the thermal expansion amount of the substrate 23 is reduced, and the occurrence of scratches on the substrate 23 can be suppressed.
- the coefficient of thermal expansion of the metal plate is 8.4 X 10 _6 Z ° C, and the coefficient of thermal expansion of the substrate 23 (8.3. X 10 _6 Z ° C).
- the difference between the thermal expansion coefficient of the second support base 22 and the thermal expansion coefficient of the substrate 23 is larger than the difference between the thermal expansion coefficient of the first support base 21 and the thermal expansion coefficient of the substrate 23.
- the length of the linear scratches generated on the substrate 23 can be reduced by almost two orders of magnitude.
- the outer periphery of the second support 22 placed on the first support 21 is always outside the outer periphery of the substrate 23 placed on the second support 22 so that the support 22 exists. It is configured to be located. Therefore, when there is an outer peripheral end portion of the second support base 22 on the inner side of the substrate 23, the force that causes the substrate 23 to be scratched by the edge of the outer peripheral end portion. Can also be prevented.
- the generation of scratches on the surface of the substrate 23 caused by the difference in thermal expansion between the support table 20 and the substrate 23 is suppressed, and further, the second support table 22 It is possible to provide a high-quality display panel by preventing the occurrence of scratches caused by rubbing the substrate 23 by the end portions of the substrate.
- FIG. 3 is a diagram showing the configuration of a support base used in the display panel manufacturing method according to the second embodiment of the present invention, and shows a state where a substrate is placed on the support base. Since the configuration of the substrate of the display panel is the same as that of the first embodiment, description thereof is omitted. In the embodiment of the present invention, the configurations of the first support base 24 and the second support base 25 are different from those of the first embodiment.
- the first support base 24 is provided with a groove 26, and the second support base 25 is constituted by a thin plate along the surface shape of the first support base 24 including the groove 26.
- the substrate 23 is placed on the second support base 25, and a space 27 is provided between the substrate 23 and the second support base 25.
- the thin plate constituting the second support base 25 is a metal plate containing titanium similar to that described in the first embodiment.
- a second support base 25 exists around the substrate 23.
- FIG. 4 is a view showing a modified example of the configuration of the support base used in the display panel manufacturing method according to the second embodiment of the present invention.
- a second support base 29 having an uneven portion is placed to provide a space 30 between the substrate 23 and the second support base 29, and the substrate 23 is placed on the second support base 29.
- the second support base 29 is a metal plate containing titanium similar to that described in the first embodiment, and the second support base 29 exists around the substrate 23.
- the difference between the thermal expansion amount of the second support base 29 and the thermal expansion amount of the substrate 23 at the time of firing becomes small, and the occurrence of scratches on the substrate 23 can be suppressed.
- the formation of the space 30 between the substrate 23 and the second support base 29 reduces the occurrence of buoyancy on the substrate 23 during firing, suppresses the displacement of the substrate 23, and damages the substrate 23. Can be prevented.
- FIG. 5 is a diagram showing a configuration of a support base used in the display panel manufacturing method according to the third embodiment of the present invention. Since the configuration of the substrate of the display panel is the same as that of the first embodiment, the description is omitted.
- movement restraining means for restraining the second support base from moving on the first support base.
- a second support base 32 made of a thin plate is placed on the first support base 31, and the substrate 23 is placed on the second support base 32.
- the second support base 32 includes a first bent portion 32a bent upward at an end portion thereof and a second bent portion 32b serving as movement restraining means bent downward.
- the second bent portion 32b is provided so as to face the four side surfaces of the first support base 31, respectively.By providing the second bent portion 32b, the second support base 32 slips on the first support base 31. Can be prevented.
- the second support base 32 is composed of a metal plate containing titanium similar to that described in the first embodiment.
- the difference between the thermal expansion amount of the second support base 32 and the thermal expansion amount of the substrate 23 at the time of firing becomes small, and it is possible to suppress the generation of scratches on the substrate 23. it can. Further, it is possible to prevent the substrate 23 from being damaged, the firing furnace from being broken, and the like by suppressing the displacement of the second support base 32 and the displacement of the substrate 23 during firing.
- FIG. 6A and FIG. 6B are diagrams showing a modification of the configuration of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- a second support base 34 made of a thin plate is placed on the first support base 33, and the substrate 23 is placed on the second support base 34.
- Convex portions 33a are provided at the four corners of the first support base 33, and the convex portions 33a have a right triangle shape when viewed from above.
- the second support base 34 has a shape in which four corners of a rectangle are cut, and is opposed to the hypotenuse of the right triangle of the convex portion 33a. With this configuration, it is possible to prevent the second support base 34 from slipping on the first support base 33 during firing.
- the second support base 34 is made of a metal plate containing titanium, and the difference between the thermal expansion amount of the second support base 34 and the thermal expansion amount of the substrate 23 during firing is the same. Since the size is reduced, it is possible to prevent the substrate 23 from being damaged.
- FIG. 7A and FIG. 7B are diagrams showing a modification of the configuration of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- 7A is a plan view
- FIG. 7B is a cross-sectional view taken along line AA in FIG. 7A.
- a second support base 36 is placed on the first support base 35, and the substrate 23 is placed on the second support base 36.
- the first support base 35 is provided with a plurality of holes 35a so as to surround the second support base 36.
- two holes are provided for each side of the thin plate that is the second support base 36.
- Hole 35a is provided.
- a fixing member 37 serving as a movement restraining means is fitted into the hole 35a, and the fixing member 37 can prevent the second support base 36 from slipping and shifting on the first support base 35 during firing.
- the fixing member 37 serves as a stopper for the substrate 23.
- the second support base 36 is made of a metal plate containing titanium as in the first embodiment, the thermal expansion amount of the second support base 36 and the thermal expansion amount of the substrate 23 during firing.
- FIG. 8A and FIG. 8B are diagrams showing a modification of the structure of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- 8A is a plan view
- FIG. 8B is a cross-sectional view taken along line AA in FIG. 8A.
- a second support base 39 is placed on the first support base 38, and the substrate 23 is placed on the second support base 39.
- the first support base 38 is provided with a plurality of holes 39a so as to surround the second support base 39.
- two holes 39a are provided for each side of the second support base 39.
- plate-like members 40a and 40b serving as movement restraining means are provided so as to correspond to the respective sides of the second support base 39.
- the plate-like members 40a and 40b are fixed to the holes 39a of the first support base 38 in the fixing member 41. It is fixed with.
- the plate-like member 40a is arranged around the second support 39, and the end of the plate-like member 40b provided on the plate-like member 40a overlaps the end of the second support 39. It is configured.
- the plate-like members 40a and 40b can prevent the second support base 39 from slipping on the first support base 38 during firing, and the plate-like member 40b is a stopper for the substrate 23 even when the substrate 23 is largely displaced. It becomes. Further, since the second support base 39 is made of a metal plate containing titanium, as in the first embodiment, the thermal expansion amount of the second support base 39 and the thermal expansion amount of the substrate 23 during firing. And the occurrence of scratches on the substrate 23 can be suppressed.
- the plate-like member 40a and the plate-like member 40b may be integrated. In consideration of thermal expansion, a gap is formed between the second support base 39 and the plate-like member 40a.
- the plate-like member 40a is made thicker than the second support base 39, and a gap is provided between the upper surface of the second support base 39 and the lower surface of the plate-like member 40b, so that the thermal expansion of the second support base 39 is achieved. Do not disturb the structure.
- FIG. 9A and FIG. 9B are diagrams showing a modified example of the structure of the support base used in the display panel manufacturing method according to the third embodiment of the present invention.
- 9A is a plan view
- FIG. 9B is a cross-sectional view taken along line AA of FIG. 9A.
- the second support base 43 is placed on the first support base 42.
- a substrate 23 that is smaller than the second support base 43 is placed on the second support base 43.
- FIGS. 9A and 9B two holes 42a are provided in the central portion of the first support base 42.
- the holes are parallel to the short side of the first support base 42.
- a projection 44 serving as a movement restraining means is attached, and this projection 44 is fitted into the hole 42a of the first support base 42.
- the second support base 43 is made of a metal plate containing titanium as in the first embodiment, the thermal expansion amount of the second support base 43 and the thermal expansion amount of the substrate 23 during firing are calculated. This difference is reduced, and the generation of scratches on the substrate 23 can be suppressed.
- the number and the positions of the protrusions 44 may be arbitrary, but by providing at least two protrusions 44, the second support base 43 can be prevented from being translated or rotated.
- FIG. 10A and FIG. 10B are diagrams showing a modification of the configuration of the support base used in the method for manufacturing a display panel according to the third embodiment of the present invention.
- 10A is a plan view
- FIG. 1OB is a cross-sectional view taken along line AA of FIG. 10A.
- the second support base 45 is placed on the first support base 42.
- a substrate 23 smaller than the second support 45 is placed on the second support 45.
- two holes 42a are provided in the central portion of the first support base 42, and in the figure, they are arranged in parallel with the short side of the first support base 42.
- projections 45a serving as movement restraining means are provided at two locations in the center of the second support base 45 so as to project toward the back side.
- These protrusions 45a form a protrusion 45a by making an appropriate cut in the second support base 45 made of, for example, a thin plate and bending the cut portion to the back side of the thin plate of the second support base 45.
- the projection 45a is fitted into the hole 42a of the first support base 42.
- the second support base 45 is prevented from slipping on the first support base 42 and being rotated or moved during firing. it can.
- the second support base 45 is made of a metal plate containing titanium, as in the first embodiment, the thermal expansion amount of the second support base 45 and the thermal expansion of the substrate 23 during firing. The difference from the amount becomes small, and the generation of scratches on the substrate 23 can be suppressed.
- the number and position of the protrusions 45a may be arbitrary, but by providing at least two protrusions 45a, It is possible to prevent the second support 45 from being translated or rotated.
- the substrate 23 may be placed on the second support base so that the center point of the substrate 23 coincides with the center point of the second support base. It is possible to make the thermal expansion direction of the preferred substrate 23 coincide with the thermal expansion direction of the second support base. Further, if the substrate 23 is larger than the second support base, the substrate 23 is in contact with the edge portion of the second support base. The contact with such an edge portion makes the substrate 23 easily damaged. However, in the first to third embodiments, since the substrate 23 is placed on the second support base so that the second support base exists around the substrate 23, such a scratch is not generated. Absent.
- FIG. 11A, FIG. 11B, and FIG. 11C are diagrams showing a configuration of a support base used in the method for manufacturing a display panel according to the fourth embodiment of the present invention, in which a substrate is placed on the support base Show me! / Since the configuration of the substrate of the display panel is the same as that of the first embodiment, description thereof is omitted.
- the configuration of the second support base is different from that of the first embodiment and the second embodiment.
- FIG. 11A is a plan view
- FIG. 11B is a cross-sectional view in the X direction
- FIG. 11C is a cross-sectional view in the y direction.
- a plurality of strip-shaped grooves are formed in parallel on the surface of the first support base 50, and a rod-shaped member 51 as a second support base is inserted into the groove. It has been done.
- the substrate 23 is placed on a rod-like member 51 serving as a second support base. In a state in which the substrate 23 is placed on the rod-shaped member 51, a space 53 is formed between the substrate 23 and the first support base 50.
- the rod-shaped member 51 is interposed between the first support base 50 and the substrate 23.
- the first support base 50 is made of a low thermal expansion material such as a heat-resistant ceramic, and the rod-like member 51 as the second support base is the first, It is made of the same metal as the thin plate that is the second support in the second and third embodiments, and for example, titanium or a titanium alloy can be used.
- the first support base 50 is put into a firing furnace, and the material layer formed on the substrate 23 is fired.
- the difference between the thermal expansion coefficient of the rod-shaped member 51 and the thermal expansion coefficient of the substrate 23 is small, the difference between the thermal expansion amount of the rod-shaped member 51 and the thermal expansion amount of the substrate 23 at the time of firing becomes small. The occurrence of scratches on 23 can be suppressed. Further, since the space 53 is formed between the substrate 23 and the first support base 50, the occurrence of buoyancy acting on the substrate 23 during firing is reduced, so that the displacement of the substrate 23 can be prevented. It is out.
- FIG. 12A and FIG. 12B are diagrams showing a modification of the configuration of the support base used in the method for manufacturing a display panel in the fourth embodiment of the present invention.
- 12A is a plan view
- FIG. 12B is a cross-sectional view in the X direction of FIG. 12A.
- a plurality of striped grooves are formed radially from the center of the first support base 54 on the surface of the first support base 54, and the second support is provided in the groove.
- a rod-like member 51 serving as a base is inserted.
- the rod-like member 51 is disposed in consideration of the thermal expansion of the substrate 23 radially during firing.
- the difference between the thermal expansion coefficient of the rod-shaped member 51 and the thermal expansion coefficient of the substrate 23 is small, the difference between the thermal expansion amount of the rod-shaped member 51 and the thermal expansion amount of the substrate 23 during firing is small.
- the direction of thermal expansion is the same, the generation of scratches on the substrate 23 can be further suppressed.
- the space is formed between the substrate 23 and the first support base 54, the occurrence of buoyancy of the substrate 23 during firing is reduced, so that the displacement of the substrate 23 can be suppressed.
- FIG. 13A, FIG. 13B, and FIG. 13C are diagrams showing a modified example of the configuration of the support base used in the display panel manufacturing method according to the fourth embodiment of the present invention.
- 13A is a plan view
- FIG. 13B is a cross-sectional view in the X direction of FIG. 13A
- FIG. 13C is a cross-sectional view in the y direction.
- a plurality of striped grooves are formed in parallel on the surface of the first support base 55, and a rod-shaped member 56 that serves as a second support base in the groove. 57, and when the base plate 23 is placed on the rod-like member 56, a space 58 is formed between the substrate 23 and the first support base 55. Also, both ends of the rod-like member 56 are thicker than the other parts.
- the board 23 is placed on the thin portion of the rod-like member 56. This can prevent displacement of the substrate 23 in the X direction in the firing step.
- the rod-like members 57 arranged at the upper end and the lower end of the first support base 55 in FIG. 13A have a thickness that can prevent the substrate 23 from moving in the y direction. ing.
- the first support base 55 is made of a low thermal expansion material such as a heat-resistant ceramic, and the rod-like members 56 and 57 are made of the same metal as the rod-like member 51. According to this configuration, since the difference between the thermal expansion coefficient of the rod-shaped members 56 and 57 and the thermal expansion coefficient of the substrate 23 is small, the thermal expansion amount of the rod-shaped members 56 and 57 during firing and the thermal expansion amount of the substrate 23 are Since the difference is small, the generation of scratches on the substrate 23 can be further suppressed. In addition, since the space 58 is formed between the substrate 23 and the first support base 55, the occurrence of buoyancy of the substrate 23 during firing is reduced, so that the displacement of the substrate 23 can be suppressed. .
- FIG. 14A and FIG. 14B are diagrams showing the configuration of the support base used in the display panel manufacturing method according to the fifth embodiment of the present invention.
- 14A is a plan view
- FIG. 14B is a cross-sectional view taken along the line BB.
- 15A and 15B are diagrams showing details of a portion c in FIG. 14A
- FIG. 15A is a sectional view
- FIG. 15B is a plan view.
- a substrate 23 such as a front glass substrate 3 and a rear glass substrate 11 with a surface on which a component 220 such as various electrodes and material layers is formed as an upper surface is a first support base. It is mounted on a support base 63 constituted by 61 and a second support base 62.
- the second support base 62 is divided into two, and one substrate 23 is mounted so as to straddle the two divided second support bases 62.
- the first support base 61 is made of a heat-resistant material having a small thermal expansion coefficient, and the thermal expansion coefficient is about ⁇ 0.4 ⁇ 10 _6 Z ° C.
- the second support base 62 is made of the same thin metal plate as that used in the first, second, and third embodiments, for example, titanium or a titanium alloy.
- the reason why the second support base 62 is divided into two parts is as follows. That is, due to the increase in size of PDP and the like and the multi-chamfering method for improving production efficiency, the substrate 23 in the firing process is increased in size, and accordingly, the necessary force S to use the second support base 62 having an extremely large area arises.
- the second support 62 which has such a large area metal plate force, is distributed in the factory. The amount is limited and its price is significantly higher. Therefore, in the embodiment of the present invention, the use of a plurality of second support bases 62 having a small area facilitates reduction in production cost and handling in the firing process.
- a plurality of restricting portions 64 for restricting the direction of thermal expansion of the second support base 62 made of sheet metal are provided around the second support base 62.
- the restricting portion 64 includes an opening 65 provided in the second support base 62 and a restricting pin 66 fixed on the first support base 61.
- the opening 65 has a rectangular shape with a major axis.
- the opening 65 provided in the second support base 62 of the restricting portion 64 is such that the central axis 67 of the long shaft passes through the center point 69 of the first support base 61. Is formed.
- the regulation pin 66 is made of a heat-resistant material such as ceramic.
- FIG. 15A shows a state in which the restriction pin 66 is inserted into the hole 68 provided in the first support base 61.
- the restriction pin 66 is provided on the second support base 62, and the first support base 61 is provided with the restriction pin 66. The restriction pin can be moved in the long direction of the opening.
- FIG. 16 is a diagram showing the configuration of the support base when no restriction portion is provided.
- Two second support bases 70 without a restriction portion are placed side by side on the first support base 61, and The case where the board 23 is mounted thereon is shown.
- the second support base 70 thermally expands with the center of gravity 71 and 72 as the center of thermal expansion. That is, the displacement due to thermal expansion does not occur at the center of gravity of the second support base 70, and the displacement due to thermal expansion occurs radially as indicated by the arrows as it moves away from the center of gravity.
- the board 23 mounted so as to straddle the two second support bases 70 thermally expands around the center of gravity 74 regardless of the presence or absence of the second support base 70, the center of gravity 74 of the board 23 in the direction of thermal expansion 74
- the positions of the gravity centers 71 and 72 of the second support base 70 in the direction of thermal expansion do not match. Therefore, when two second support bases 70 are used, the substrate 23 is rubbed by the second support base 70 in the firing step, and the surface of the substrate 23 is scratched.
- the maximum value S of the scratch length is the firing temperature T, the direction of thermal expansion between the substrate and the second support base
- the length of scratches generated on the substrate 23 when fired at 600 ° C using a heat-resistant ceramic as the first support base 61 and a high strain point glass for 42-type PDP as the substrate 23 The maximum value of is about 1.4 mm.
- the second support on the first support base 61 is provided by the restriction pin 66 and the opening 65 of the restriction part 64.
- the displacement due to the thermal expansion of the table 62 is limited in the longitudinal axis direction of the opening 65. That is, according to the fourth embodiment of the present invention, the opening 65 provided in the second support base 62 of the restricting portion 64 has a central axis 67 of the longitudinal axis thereof that is the center point of the first support base 61. 69 is formed to pass. Since the substrate 23 is a single plate, the center point in the direction of thermal expansion coincides with the center point 69 of the first support base 61.
- the direction of thermal expansion of the second support base 62 is restricted in the longitudinal direction of the opening 65 of the restricting portion 64 around the center point 69. Therefore, the expansion direction of the substrate 23 and the expansion direction of the second support base 62 can be matched. Further, since the second support base 62 has a thermal expansion coefficient larger than that of the first support base 61, for example, titanium or the like, the difference in thermal expansion amount from the base plate 23 should be reduced. Can do. As a result, it is possible to suppress the occurrence of linear scratches on the substrate 23 due to rubbing between the substrate 23 and the second support base 62, or to shorten the length of the scratches. 10 quality and yield can be improved.
- the second support base 62 is divided into a plurality of parts, the second support base 62 can be accommodated in a small size even when the glass substrate size is increased by a multi-face machining method or the like. And cost can be reduced.
- FIG. 17 is a diagram showing a configuration of a support base used in the display panel manufacturing method according to the sixth embodiment of the present invention.
- two second support bases 62 are arranged on the long side of the first support base 61, and the board 23 is mounted so as to straddle the two second support bases 62. Yes. Since the method of forming the PDP components on the substrate 23 is the same as that of the above-described embodiment, the description thereof is omitted.
- restriction portions 64 similar to those of the fifth embodiment are provided at the corners of the second support base 62 corresponding to the four corners of the first support base 61.
- the opening 65 provided in the second support base 62 of the restricting portion 64 provided at the four corners is formed such that the central axis 67 of the longitudinal axis passes through the center point 69 of the first support base 61. Te!
- the thermal expansion direction of the second support base 62 is regulated to be the same as the thermal expansion direction of the substrate 23 during firing, and the substrate 23 and the first 2 Rubbing with the support base 62 is reduced, and the generation of scratches on the surface of the substrate 23 can be further suppressed.
- the number of the second support bases is two has been described, but the number of the second support bases is, for example, four, It is also possible to further reduce the cost of the second support base.
- FIG. 18 is a diagram showing a configuration of a support base used in the display panel manufacturing method according to the seventh embodiment of the present invention.
- two second support bases 62 are arranged on the short side of the first support base 61, and the substrate 23 is mounted so as to straddle the two second support bases 62.
- the restricting portions 64 are provided with three restricting portions 64a, 64b, 64c on each second support base 62.
- the configurations of the restricting portions 64a, 64b, and 64c are the same as those in the fourth and fifth embodiments, but the direction of the longitudinal direction of the force opening 65 is different.
- the central axis 80 of the longitudinal axis of the opening 65 between the restricting portion 64a and the restricting portion 64b provided on one second support stand 62 is aligned, and two second support stands
- the central axis 81 of the longitudinal axis of the opening 65 of the restricting portion 64c provided in 62 is aligned.
- the two central axes 80 are displaced from the center point 69 of the first support 61 by e. Therefore, in the sixth embodiment of the present invention, the center points 82 and 83 of the second support base 62 in the thermal expansion direction are in the vicinity of the center point 69 of the first support base 61 (coincident with the center point of the substrate 23).
- the center axis 80 and the center axis 81 intersect with each other, and are displaced by the center points 69 and e of the first support base 61.
- the restricting portions 64a, 64b, 64c so that the center points 82, 83 are located in the vicinity of the center point 69, the direction of thermal expansion on the second support base 62 surface during firing and its direction
- the amount of thermal expansion is approximated to the direction of thermal expansion of the substrate 23, and the friction between the second support base 62 and the substrate 23 Can reduce the length of scratches.
- the center-to-center distance (e) between the center point 69 of the substrate 23 and the center point 82 or the center point 83 in the thermal expansion direction of the second support base 62 may be set to satisfy (Equation 2).
- FIG. 19 is a diagram showing a configuration of a support base used in the display panel manufacturing method according to the eighth embodiment of the present invention.
- four second support bases 90, 91, 92, 93 are placed on the first support base 61 and straddle them.
- One board 23 is mounted. Since the configuration of the substrate 23 is the same as that of the above-described embodiment, the description thereof is omitted.
- the restricting portions 94a to 94h are provided on the first support base 61 and the second support bases 90, 91, 92, 93, and the center line of the longitudinal axis of each opening is the first support base 61. It is arranged to pass near the center of
- the center points 100, 101, 102, 103 in the direction of thermal expansion of the second support bases 90, 91, 92, 93 are located near the center of the first support base 61.
- the direction of thermal expansion of the second support 90, 91, 92, 93 is restricted, and the rubbing between the substrate 23 and the second support 90, 91, 92, 93 is reduced, and the surface of the substrate 23 Scratches can be suppressed.
- the second support bases 90, 91, 92, 93 which are metal plates such as titanium, can be made into small-area substrates, which can reduce equipment costs. it can.
- the force of the fifth embodiment described above is also the same as that of the eighth embodiment if the opening length W in the longitudinal axis direction of the opening 65 shown in FIGS. 15A and 15B is too small. 2 Expansion of the support base is hindered by the restriction pin 66, and the second support base is deformed. Therefore, the gap dimension W of the opening 65 needs to be larger than the thermal expansion amount of the second support base. That is, it is necessary to satisfy the condition of (Equation 3), where L is the distance from the center point 69 in the thermal expansion direction of the second support base 62 shown in FIG. 14A to the center of the opening 65.
- W Opening length in the longitudinal axis direction of the opening
- T f Firing temperature
- L Distance between the center of the opening and the center point in the thermal expansion direction
- the gap dimension D in the short axis direction of the opening 65 is too large, the effect of position regulation is lost, so it is desirable that the diameter be the same as or slightly larger than the diameter of the regulation pin 66.
- a restriction pin may be fixed to the second support base and the opening provided in the first support base may be movable by the restriction pin.
- the opening may be a notch provided at the end of the second support base.
- the second support base in the fifth to eighth embodiments is configured such that the second support base exists around the substrate 23 when the substrate 23 is placed thereon.
- the substrate 23 is disposed so as to straddle the plurality of second support bases. For this reason, the substrate 23 comes into contact with the edge portion of the second support base in the straddling portion, and the substrate 23 is easily damaged by the contact with the edge portion. Therefore, at least the edge portion of the edge portion of the second support that contacts the substrate 23 is bent gently at the edge portion as in the case of forming the protrusion 45a of FIGS. 10A and 10B. Make sure there are no sharp points on the surface where the is placed. At this time, a groove is provided in the first support so that a gently bent edge portion can be inserted. By configuring in this way, it is possible to prevent the substrate 23 from being damaged due to contact with the edge portion of the second support base.
- the second support base is used.
- the force described as an example of manufacturing a PDP is also useful as a method for manufacturing another display panel such as a liquid crystal panel or an FED panel.
- a high-quality display panel is realized with a high manufacturing yield, and is useful for a manufacturing method of a display panel using a large-sized substrate or a multi-sided construction method.
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Abstract
Description
Claims
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US10/589,819 US7534155B2 (en) | 2005-01-12 | 2006-01-11 | Method of manufacturing display panel, and supporting bed for substrate of the display panel |
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JP2005-004812 | 2005-01-12 | ||
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US8561976B2 (en) * | 2008-03-27 | 2013-10-22 | American Panel Corporation | Transportable carrier compatable with a retractable pin tool |
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JP2002133743A (ja) * | 2000-10-26 | 2002-05-10 | Internatl Business Mach Corp <Ibm> | 情報記録ディスク装置用ディスククランプ、及び、情報記録ディスク装置 |
JP2004095215A (ja) * | 2002-08-29 | 2004-03-25 | Pioneer Electronic Corp | フラットディスプレイパネルの製造装置 |
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US5984748A (en) * | 1998-02-02 | 1999-11-16 | Motorola, Inc. | Method for fabricating a flat panel device |
JP4256629B2 (ja) | 2001-05-30 | 2009-04-22 | パナソニック株式会社 | ガス放電表示パネルの製造方法、支持台及び支持台の製造方法 |
-
2006
- 2006-01-11 WO PCT/JP2006/300173 patent/WO2006075589A1/ja not_active Application Discontinuation
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JP2002133743A (ja) * | 2000-10-26 | 2002-05-10 | Internatl Business Mach Corp <Ibm> | 情報記録ディスク装置用ディスククランプ、及び、情報記録ディスク装置 |
JP2004095215A (ja) * | 2002-08-29 | 2004-03-25 | Pioneer Electronic Corp | フラットディスプレイパネルの製造装置 |
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