WO2008020481A1 - appareil d'affichage, appareil d'affichage plasma et procédé de détachement de filtre - Google Patents

appareil d'affichage, appareil d'affichage plasma et procédé de détachement de filtre Download PDF

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Publication number
WO2008020481A1
WO2008020481A1 PCT/JP2006/316244 JP2006316244W WO2008020481A1 WO 2008020481 A1 WO2008020481 A1 WO 2008020481A1 JP 2006316244 W JP2006316244 W JP 2006316244W WO 2008020481 A1 WO2008020481 A1 WO 2008020481A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
filter
adhesive layer
display panel
thickness
Prior art date
Application number
PCT/JP2006/316244
Other languages
English (en)
Japanese (ja)
Inventor
Nobuyuki Hori
Yoshimi Kawanami
Original Assignee
Hitachi Plasma Display Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Plasma Display Limited filed Critical Hitachi Plasma Display Limited
Priority to JP2008529804A priority Critical patent/JPWO2008020481A1/ja
Priority to PCT/JP2006/316244 priority patent/WO2008020481A1/fr
Publication of WO2008020481A1 publication Critical patent/WO2008020481A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20—Constructional details
    • H01J11/34—Vessels, containers or parts thereof, e.g. substrates
    • H01J11/44—Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/205—Applying optical coatings or shielding coatings to the vessel of flat panel displays, e.g. applying filter layers, electromagnetic interference shielding layers, anti-reflection coatings or anti-glare coatings
    • 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
    • H01J9/50—Repairing or regenerating used or defective discharge tubes or lamps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]

Definitions

  • Display device plasma display device, and filter peeling method
  • a display device including a PDP includes a plate filter using a tempered glass as a support.
  • This plate-like filter is disposed on the front side of the PDP and is provided away from the PDP.
  • the plate filter mechanically protects the PDP along with various functions related to display operations such as optical adjustment of display color, antireflection of external light, shielding of electromagnetic waves emitted from the PDP, and shielding of near infrared rays. It has a function.
  • a film filter (film filter) with a resin film as a support is directly attached to the front glass of the PDP.
  • a film filter comprising a transparent conductive film for reducing electromagnetic wave radiation noise, an antireflection film attached to the front side thereof, and a cover.
  • the screen size of a PDP is 32 inches or more diagonally, and the width of the corresponding film filter is 400 mm or more. Therefore, if the peel force is 10NZ20mm, the actual peel force when peeling the film filter may be 200N or more, which requires a very large force and the workability is poor. Furthermore, the peeling reaction may cause excessive stress on the panel, destroying the internal structure of the panel or damaging the panel itself. In the future, considering the further thinness and lightness of the plasma display device (thinning the panel and the base chassis that supports it), the risk is even greater.
  • Japanese Patent Application Laid-Open No. 2004-134285 describes a method of cutting a film into a strip shape in advance when the film is peeled from the display device, and reducing the peeled area at a time. Yes.
  • the method described in Japanese Patent Application Laid-Open No. 2004-134285 does not take into consideration that the panel may be damaged when the film is cut.
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-343898
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2004-311664
  • Patent Document 3 Japanese Patent Application Laid-Open No. 2004-134285
  • An object of the present invention is to provide a display device that can easily peel off an attached film filter without damaging the display panel. Another object of the present invention is to enable easy and reliable peeling of the attached film filter without damaging the display panel.
  • the display device of the present invention includes a display panel that displays an image, a functional film including a transparent resin base material, and a filter layer laminated on one surface side of the transparent resin base material, and an adhesive layer. And a film filter in which the functional film is attached to the front surface of the display panel via the adhesive layer, and the film filter has a thickness of the functional film described above. It is characterized in that it is 1.1 times the thickness of the adhesive layer and the thickness of the adhesive layer is 50 m or more.
  • the thickness of the adhesive layer of the film filter on the surface to be attached to the display panel is 50 m or more and less than 1.1 times the thickness of the functional film, so that the display panel is damaged. Therefore, a cut for facilitating peeling can be put in the film filter, and workability related to peeling can be improved.
  • the filter peeling method of the present invention is a film filter in which a functional film composed of a transparent resin base material and a filter layer is attached to the front surface of a display panel for displaying an image via an adhesive layer.
  • the adhesive layer of the film filter can be cut along the cut surface by cutting the functional film, and at least the transparent resin substrate of the functional film is cut completely. A cut having a depth reaching the adhesive layer and not reaching the display panel is put in the film filter, and the film filter is peeled off the display panel along the cut.
  • the force required to peel off the film filter attached to the front surface of the display panel can be reduced and the peeling work can be efficiently performed, and the load applied to the display panel due to the reaction caused by the peeling is suppressed. It is possible to prevent the display panel from being damaged.
  • FIG. 1 is a cross-sectional view schematically showing a configuration example of a display device according to an embodiment of the present invention.
  • FIG. 2A is a diagram for explaining a method of cutting a film filter.
  • FIG. 2B is a diagram showing peeling of the film filter from the display panel.
  • FIG. 3 is a diagram showing the filter surface flatness according to the thickness of the transparent resin base material and the thickness of the adhesive layer.
  • FIG. 4A is a cross-sectional view showing a specific example of a film filter in the present embodiment.
  • FIG. 4B is a cross-sectional view showing another specific example of the film filter in the present embodiment.
  • FIG. 1 is a diagram illustrating a configuration example of a display device according to an embodiment of the present invention.
  • FIG. 1 schematically shows a cross section of the display device according to the present embodiment.
  • 1 is a functional film
  • 2 is an adhesive (transparent adhesive) layer (hereinafter referred to as an adhesive layer)
  • 3 is a front glass of the display panel.
  • a functional film 1 and an adhesive layer 2 constitute a film filter, which is attached to the front glass 3 of the display panel.
  • the functional film 1 is attached to the front glass 3 of the display panel via the adhesive layer 2.
  • the functional film 1 includes, for example, an optical property adjustment film for optical adjustment of display color, an antireflection film for preventing reflection of external light, and a display panel force for blocking electromagnetic waves emitted.
  • These include electromagnetic wave shielding films and near infrared ray shielding films for shielding near infrared rays emitted from display panels (particularly PDP).
  • the functional film 1 has a transparent resin base material 4 and a filter layer 5 laminated on one surface side thereof.
  • a PET (polyethylene terephthalate) film is used as the transparent resin substrate 4, and a characteristic adjusting film, an antireflection film, a conductive layer, a near-infrared blocking layer, etc. according to the function realized by the functional film 1 are provided on one side thereof.
  • the filter layer 5 is formed.
  • the adhesive layer 2 is for attaching the functional film 1 to the front glass 3 of the display panel.
  • Adhesive layer 2 is made of acrylic resin as the main material, and its hardness is adjusted so that it is cut along the cut surface of functional film 1 even if it is not cut completely. It is. That is, at least the functional film 1 is completely cut, so that the functional film 1 and the adhesive layer 2 immediately below the functional film 1 can be peeled along the cut surface.
  • the display panel in the present embodiment is a plasma display panel (PDP).
  • PDP plasma display panel
  • a plurality of X electrodes stain electrodes
  • a plurality of Y electrodes scanning electrodes
  • address electrodes, ribs for partitioning display cells, and phosphors are disposed on the rear glass substrate facing the front glass substrate 3.
  • Ne + Xe-paying gas, etc. is sealed between the front glass substrate and the back glass substrate.
  • X electrode, Y electrode and address electrode are arranged so as to be orthogonal
  • Each display cell corresponding to a pixel is formed by the intersection of the Y electrode and the address electrode and the corresponding X electrode adjacent thereto. Then, by selectively generating a discharge in the display cell, the phosphor provided in the display cell is excited to emit light, and an image is displayed.
  • the thickness of the adhesive layer 2 is 50 m or more, and the thickness of the functional film 1 is that of the adhesive layer 2. 1. More than 1 times the thickness.
  • the thicknesses of the functional film 1 and the adhesive layer 2 in the film filter of this embodiment will be described.
  • the cross-sectional structure of the film filter has the same outer shape in the order of the separator, the adhesive layer, and the functional film on the display panel side.
  • the functional film has only a transparent resin base and is not provided with a filter layer.
  • the adhesive layer is mainly made of an acrylic resin as described above, and the adhesive layer itself is completely cut! At least, the adhesive layer is hard so that it is cut along the cut surface of the functional film. Is adjusted.
  • each film filter force The separator is peeled off and bonded to a glass substrate having a thickness of about 3 mm, and as shown in FIG. 2A, a functional film of the film filter (transparent using a cutter having a depth adjusting function) The cut was made so that the resin base was completely cut. However, considering the thickness accuracy (about ⁇ 10 m) of the transparent resin substrate in the film filter and the depth accuracy of the cutter blade, the depth of the cutter blade (thickness of the transparent resin substrate) + 20 m).
  • FIG. 2A is a diagram for explaining a method of cutting a film filter.
  • 11 is a functional film (transparent resin base material)
  • 12 is an adhesive layer
  • 13 is a glass substrate
  • 14 is a cutter having a depth adjusting function. Adjust the depth of the blade 16 and fix it with the stopper 15 and move the cutter 14 using the guide 17 to make a cut with a predetermined depth in the film filter consisting of the functional film 11 and the adhesive layer 12 .
  • the film filter was peeled off from the glass substrate 13 along the cut as shown in Fig. 2B.
  • FIG. 2B is a diagram showing how the film filter is peeled off.
  • D indicates the depth of the cutter blade (depth of the cut surface), and 21 indicates the cut surface.
  • the thickness of the adhesive layer in the film filter was 25 ⁇ m, the surface of the glass substrate was damaged and the panel surface was damaged, but the thickness of the adhesive layer was 50 m. In these cases, the glass substrate surface is not damaged and the panel surface is not damaged. Even if the thickness of the adhesive layer is 25 ⁇ m or more and less than 50 ⁇ m, depending on the thickness of the adhesive layer, the functional film (transparent resin base material) may be cut without damaging the glass substrate surface. Although it is possible to peel the film filter, it is not preferable because it requires an improvement in the thickness accuracy of the transparent resin base material and an improvement in the depth accuracy of the cutter blade, leading to an increase in cost.
  • the film thickness after bonding the film filter is increased.
  • the flatness of the surface of the filter was improved.
  • the film filter has a pressure-sensitive adhesive layer thickness of 25 m, 50 ⁇ m, and 100 m, and a transparent resin substrate thickness of 50 / zm, 100 ⁇ m, and 200 m, respectively.
  • a layer having a thickness of 250 m and a transparent oyster effect having a thickness of 100 ⁇ m, 200 ⁇ m, and 300 ⁇ m was prepared.
  • the symbol “ ⁇ ” indicates that the surface flatness is good
  • the symbol “ ⁇ ” indicates that the surface flatness is slightly bad
  • the symbol “X” indicates the surface flatness. Show that it is evil!
  • the horizontal axis represents the thickness (T) of the adhesive layer
  • the vertical axis represents the transparent resin base material.
  • the glass substrate Filter after bonding to
  • a film filter having a functional film (transparent resin base material) thickness of 300 ⁇ m and an adhesive layer thickness of 250 ⁇ m was prepared, and a 42-inch diagonal plasma display module was prepared. Bonded to the front glass of PDP. As shown in FIG. 2A, the transparent resin base material in the film filter was cut using a cutter having a depth adjusting function.
  • the depth of the cutter blade was such that the functional film (transparent resin base material) of the film filter was completely cut and did not reach the front glass of the display panel (PDP).
  • the interval between adjacent cuts was 50 mm, 1 OO mm, 200 mm, 300 mm, 400 mm, 500 mm, and the strips were made into strips.
  • the adhesive strength of this film filter to glass is 10NZ25mm (90 ° peeling, peeling speed 200mmZmin, temperature 25 ° C, humidity 50%). Therefore, the peeling forces at peeling widths of 50 mm, 10 Omm, 200 mm, 300 mm, 400 mm, and 500 mm are 20 N, 40 N, 80 N, 120 N, 160 N, and 200 N, respectively.
  • Table 3 shows the workability of the stripping work with respect to the stripping width and the presence or absence of display defects when stripping a film filter that has been cut into strips.
  • the film filter can be peeled relatively easily, and display on the display panel after the film filter is peeled off. There were no defects.
  • the peel width is 400 mm or more, if the force required to peel off the film filter is large and the workability is poor, the display panel will stagnate due to the reaction caused by peeling, and the internal structure of the panel will be damaged. Problems such as display defects due to (such as rib collapse) occurred. Therefore, the width of the film to be peeled at one time is, for example, a film filter that peels at such an interval that a peel force of 150 N or less is desired.
  • the thickness of the adhesive layer of the film filter to be attached to the display panel is set to 50%.
  • the film filter can be cut without damaging the front glass, facilitating peeling work and workability. Can be improved.
  • the flatness of the filter surface after film filter bonding is not bad.
  • the peeling force generally decreases as the peeling speed decreases, it is desirable to appropriately set the peeling width and the peeling speed so that the total of the peeling tact time is shortened for each target.
  • a PET film is shown as an example as a transparent resin base material, it is not limited to this, The same effect will be provided if a transparent resin base material can be cut
  • FIGS. 4A and 4B A specific configuration example of the film filter in the present embodiment is shown in FIGS. 4A and 4B.
  • 4A and 4B schematically show the cross-sectional structure of the film filter, and the film filter is attached to the front glass of the display panel via the adhesive layers 41 and 51.
  • FIG. 4A and 4B schematically show the cross-sectional structure of the film filter, and the film filter is attached to the front glass of the display panel via the adhesive layers 41 and 51.
  • Fig. 4A 41 is an adhesive layer mainly composed of acrylic resin, and at least the functional film portion is completely cut, so that the adhesive layer itself is not cut completely, even on the cut surface. The hardness is adjusted to be cut along with the peeling.
  • 42 is a transparent resin base material (for example, PET film), and 43 is a conductive layer laminated on one side of the transparent resin base material 42. That is, the transparent resin substrate 42 and the conductive layer 43 constitute an electromagnetic wave shielding film for blocking electromagnetic waves emitted from the display panel cover as one functional film.
  • [0045] 44 is an adhesive layer
  • 45 is a transparent resin base material (for example, PET film)
  • 46 is an antireflection film laminated on one side of the transparent resin base material 45.
  • the transparent resin base material 45 and the antireflection film 46 constitute an antireflection film for preventing reflection of outside light as one functional film.
  • Electromagnetic wave shielding film comprising transparent resin base material 42 and conductive layer 43
  • an antireflection film comprising a transparent resin base material 45 and an antireflection film 46 are bonded together by an adhesive layer 44.
  • FIG. 4B shows a conductive layer disposed on the opposite side of the display panel in the electromagnetic wave shielding film of the film filter shown in FIG. 4A, which is disposed on the display panel side.
  • the adhesive layer 51, 54 ⁇ , the conductive layer 52, conductive layer 53, 55, transparent base material 56, antireflection film 56 correspond to the adhesive layers 41 and 44 shown in FIG. 4B, respectively, and the conductive layer 52 corresponds to the conductive layer 43 shown in FIG.
  • the transparent resin base materials 53 and 55 correspond to the transparent resin base materials 42 and 45 shown in FIG. 4B, and the antireflection film 56 corresponds to the antireflection film 46 shown in FIG.
  • the film filter in the present embodiment may include two functional films as shown in FIGS. 4 and 4 and provided with an adhesive layer on the side to be attached to the display panel.
  • the number of functional films and the surface on which the filter layer is formed are arbitrary.
  • a cut for facilitating peeling without damaging the display panel can be put in the film filter, and damage to the display panel can be prevented and workability related to peeling can be improved. And the flatness of the filter surface after the film filter is attached can be kept good.

Abstract

L'invention concerne un appareil d'affichage comprenant un filtre de film pourvu d'un film fonctionnel, le film fonctionnel composée d'un matériau de base de résine transparente et, superposée sur une surface principale de celui-ci, une couche de filtre, et une couche adhésive sensible à la pression, et contenant un panneau d'affichage présentant le filtre de film fixé à la face avant de celui-ci au moyen de la couche adhésive sensible à la pression, caractérisé en ce que l'épaisseur du film fonctionnel du filtre de film sur la surface collée au panneau d'affichage est 1,1 fois ou davantage celle de la couche adhésive sensible à la pression, et caractérisé en ce que l'épaisseur de la couche adhésive sensible à la pression est supérieure ou égale à 50 µm, de sorte que l'on peut pratiquer une ligne de découpe sur le filtre de film pour assurer un détachement en douceur sans abîmer le panneau d'affichage. On peut ainsi augmenter l'efficacité du détachement sans endommager le panneau d'affichage.
PCT/JP2006/316244 2006-08-18 2006-08-18 appareil d'affichage, appareil d'affichage plasma et procédé de détachement de filtre WO2008020481A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008529804A JPWO2008020481A1 (ja) 2006-08-18 2006-08-18 表示装置、プラズマディスプレイ装置及びフィルタ剥離方法
PCT/JP2006/316244 WO2008020481A1 (fr) 2006-08-18 2006-08-18 appareil d'affichage, appareil d'affichage plasma et procédé de détachement de filtre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/316244 WO2008020481A1 (fr) 2006-08-18 2006-08-18 appareil d'affichage, appareil d'affichage plasma et procédé de détachement de filtre

Publications (1)

Publication Number Publication Date
WO2008020481A1 true WO2008020481A1 (fr) 2008-02-21

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JP (1) JPWO2008020481A1 (fr)
WO (1) WO2008020481A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002074532A1 (fr) * 2001-03-15 2002-09-26 Mitsui Chemicals Inc. Corps lamine et dispositif d'affichage utilisant ce corps lamine
WO2003040049A1 (fr) * 2001-11-08 2003-05-15 Sharp Kabushiki Kaisha Procede et dispositif destines a diviser un substrat de verre, panneau a cristaux liquides et dispositif de fabrication de panneau a cristaux liquides
JP2004311664A (ja) * 2003-04-04 2004-11-04 Nitto Denko Corp プラズマディスプレイ用直貼りフィルタ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002074532A1 (fr) * 2001-03-15 2002-09-26 Mitsui Chemicals Inc. Corps lamine et dispositif d'affichage utilisant ce corps lamine
WO2003040049A1 (fr) * 2001-11-08 2003-05-15 Sharp Kabushiki Kaisha Procede et dispositif destines a diviser un substrat de verre, panneau a cristaux liquides et dispositif de fabrication de panneau a cristaux liquides
JP2004311664A (ja) * 2003-04-04 2004-11-04 Nitto Denko Corp プラズマディスプレイ用直貼りフィルタ

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