JP2004296286A - Recovery method of inferior goods of plasma display panel - Google Patents

Recovery method of inferior goods of plasma display panel Download PDF

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Publication number
JP2004296286A
JP2004296286A JP2003087410A JP2003087410A JP2004296286A JP 2004296286 A JP2004296286 A JP 2004296286A JP 2003087410 A JP2003087410 A JP 2003087410A JP 2003087410 A JP2003087410 A JP 2003087410A JP 2004296286 A JP2004296286 A JP 2004296286A
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Prior art keywords
acidic solution
nitric acid
plasma display
glass substrate
display panel
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Inventor
唯誠 ▲麗▼
Wei-Cheng Li
文豪 ▲廖▼
Bungo Ryo
Kamei Chin
科名 陳
Keika Chokan
慶▲華▼ 張簡
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Solar Applied Material Technology Corp
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Solar Applied Material Technology Corp
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Priority to JP2003087410A priority Critical patent/JP2004296286A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/20Waste processing or separation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/82Recycling of waste of electrical or electronic equipment [WEEE]

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  • Processing Of Solid Wastes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recovery method of inferior goods of a plasma display panel which can collect and reuse the inferior goods of the plasma display panel. <P>SOLUTION: A wall in the panel is removed by an acidic solution containing nitric acid, a front face plate and a back face plate are separated, a protective layer, an auxiliary electrode, and a black matrix film in a glass substrate of the front face plate are removed by the acidic solution containing the nitric acid, and a dielectric layer in the glass substrate is removed by hydrofluoric acid, a transparent electrode in the glass substrate is removed by the acidic solution containing the nitric acid while the glass substrate is made to remain, a barrier rib, a fluorescent material, and an electrode in the glass substrate of the back plate are removed by the acidic solution containing the nitric acid, the dielectric layer in the glass substrate is removed by the hydrofluoric acid, and the glass substrate is made to remain. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、特にプラズマディスプレイパネルの不良品を回収して、再利用することができるプラズマディスプレイパネルの不良品の回収方法に関するものである。
【0002】
【従来の技術】
従来のブラウン管(Cathode Ray Tube;CRT)モニタは、優れた解析度を有するが、その奥行き及び重量が大きいので、40インチ以上のモニタには適さない。また、平面型モニタ(Flat Panel Display;FPD)の液晶モニタ(Liquid Crystal Display;LCD)は、省エネ及び低電圧という特長を有するが、製造技術によってモニタのサイズと観賞角度が制限されている。一方、同じ平面型モニタであるプラズマモニタ(Plasma Display Panel;PDP)は、40インチ以上のモニタを実現できるので、画面の大型化に適している。
【0003】
現有のプラズマモニタはおおむね交流型(AC型)、直流型(DC型)又は他の形式であるパネルを有するが、ここでは交流型のパネルを例として説明する。図6に示すように、該パネルは一体に構成される前面板(1)と背面板(2)とを有し、該前面板(1)は異なる材質である複数のメッキフィルムからなり、このメッキフィルムが透明電極(11)と補助電極(12)からなるディスプレイ電極と、ブラックマトリックス膜(13)と、誘電体層(16)と、保護層(14)と、ガラス基板(10)の周辺における壁(15)とを備える。
【0004】
前記背面板(2)はガラス基板(20)に異なる材質である複数のメッキフィルムが設けられるものであり、該メッキフィルムが電極(21)と、誘電体層(22)と、隔壁(23)と、赤、緑、青の三原色の蛍光体(24)とを備えるものである。
【0005】
背面板(2)と前面板(1)とを組合わせる際は、特定の気体を同時に封入すると共に、熱圧手段によって前面板(1)の壁(15)と背面板(2)のガラス基板(20)とを一体に結合することにより、プラズマモニタのパネルとなる。又、プラズマモニタにおけるディスプレイ電極と電極(21)との間に電圧を加えると、前面板(1)と背面板(2)との間において放電が起こり、これにより、プラズマを発生し、このプラズマが蛍光体(24)に照射されて、発光が行われる。このプラズマは、自由に運動する正負の荷電粒子が共存して電気的に中性になっている状態である。
【0006】
【本発明が解決しようとする課題】
プラズマモニタの製造技術による大画面を有するプラズマモニタの製造の制御は非常に難しいことであるため、良品率は50%〜80%程度であり、即ち数多くの製品又は半製品が、点検不合格による不良品となっている。このような状況において、プラズマモニタのメーカーは、不良品の回収について何ら具体的提案をいままで提出していない。又、該不良品を直接に廃棄又は燃焼すれば、環境汚染という問題を引き起こすと共に、不良品中には大量の有用な金属が含まれるため、廃棄してしまうと、資源の損失となる。
【0007】
そこで、出願されたのが本発明であって、プラズマディスプレイパネルの不良品を回収して、再利用することができるプラズマディスプレイパネルの不良品の回収方法を提供することを目的としている。
【0008】
【課題を解決するための手段】
本願の請求項1の発明は、硝酸を含む酸性溶液によってパネルにおける壁を除去して、前面板と背面板とを分離させ、
硝酸を含む酸性溶液によって前面板のガラス基板における保護層と補助電極とブラックマトリックス膜を除去すると共に、弗酸(フッ(弗)化水素酸:hydrofluoric acid、以下同じ。)によって該ガラス基板における誘電体層を除去し、硝酸を含む酸性溶液によって該ガラス基板における透明電極を除去して、該ガラス基板を残留し、
硝酸を含む酸性溶液によって背面板のガラス基板における隔壁と蛍光体と電極を除去し、弗酸によって該ガラス基板における誘電体層を除去すると共に、該ガラス基板を残留することを特徴とするプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項2の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項3の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項4の発明は、前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、浸漬手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項5の発明は、前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、洗浄手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項6の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項7の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項8の発明は、前記前面板と背面板とのガラス基板を酸性溶液によって腐食させた後、研磨手段によって平面化することを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項9の発明は、硝酸を含む酸性溶液によってパネルにおける壁を除去して、前面板と背面板とを分離させ、
硝酸を含む酸性溶液によって前面板のガラス基板における保護層と補助電極とブラックマトリックス膜を除去すると共に、弗酸によって該ガラス基板における誘電体層を除去し、硝酸を含む酸性溶液によって該ガラス基板における透明電極を除去して、該ガラス基板を残留し、
硝酸を含む酸性溶液によって背面板のガラス基板における隔壁と蛍光体と電極と誘電体層を除去し、該ガラス基板を残留することを特徴とするプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項10の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項11の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項12の発明は、前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、浸漬手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項13の発明は、前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、洗浄手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項14の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項15の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項16の発明は、前記前面板と背面板とのガラス基板を酸性溶液によって腐食させた後、研磨手段によって平面化することを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項17の発明は、硝酸を含む酸性溶液によってパネルにおける壁を除去して、前面板と背面板に分離させ、
硝酸を含む酸性溶液によって前面板のガラス基板における保護層と補助電極とブラックマトリックス膜を除去すると共に、弗酸によって該ガラス基板における誘電体層を除去し、硝酸を含む酸性溶液によって該ガラス基板における透明電極を除去し、該ガラス基板を残留し、
硝酸と弗酸から成る酸性溶液によって背面板のガラス基板における隔壁と蛍光体と電極と誘電体層を除去し、該ガラス基板を残留することを特徴とするプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項18の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項19の発明は、前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項20の発明は、前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、浸漬手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項21の発明は、前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、洗浄手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項22の発明は、前記硝酸と弗酸から成る酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項23の発明は、前記硝酸と弗酸から成る酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法及び、
本願の請求項24の発明は、前記前面板と背面板とのガラス基板を酸性溶液によって腐食させた後、研磨手段によって平面化することを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法、
を提供する。
【0009】
【作用】
本発明は前記課題を解決するものであり、パネルを特定の酸性溶液によって前面板と背面板に分離させ、特定の酸性溶液により、浸漬又は洗浄手段を一回又は数回行うことにより、前面板及び背面板に設けられるガラス基板上の電極、誘電体層、蛍光体などのメッキフィルムを分離させて、パネルを分解すると共に、その中の有害物質と有用な物質とを分別して、リサイクル可能な材料を回収するので、環境汚染を防止でき、更には、資源を有効的に利用することができる。
【0010】
【発明の実施の形態】
以下、添付図面を参照して本発明の好適な実施の形態を詳細に説明する。
【0011】
図1は本発明に係わるプラズマディスプレイパネルの不良品の回収方法のフローチャートであり、図2は本発明に係わるプラズマディスプレイパネルの不良品の回収方法によるパネルを前面板及び背面板に分離する状態を示す平面図であり、図3は本発明に係わるプラズマディスプレイパネルの不良品の回収方法による前面板を分離する状態を示す平面図であり、図4は本発明に係わるプラズマディスプレイパネルの不良品の回収方法による背面板を分離する第一実施例を示す平面図であり、図5は本発明に係わるプラズマディスプレイパネルの不良品の回収方法による背面板を分離する第二実施例を示す平面図である。
【0012】
交流型(AC型)や、直流型(DC型)や他の形式であるプラズマディスプレイパネルは、全て前面板と背面板からなるので、ここでは交流型プラズマディスプレイパネルを例として説明する。図1に示すように、本発明に係わるプラズマディスプレイパネルの不良品の回収方法は、特定の酸性溶液によってパネルにおける前面板と背面板に分離し、次に特定の酸性溶液によって夫々前面板と背面板を一回又は数回で腐食分離すると共に、有害物質を分離又は収集し、或いは前面板と背面板のガラス基板を回収し、研磨により再生する又は回収により再利用する。
【0013】
図2に示すように、前記特定の酸性溶液によってパネルを前面板と背面板に分離する方法は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬又は超音波振動又は加熱(温度上限は80℃)又は洗浄及び加熱手段によって0.5〜6時間で処理することにより、前面板(1)と背面板(2)の周辺における壁(15)を除去して、前面板(1)と背面板(2)を相互に分離させる。
【0014】
図3に示すように、前面板(1)に対する処理方法は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬又は超音波振動又は加熱(温度上限は80℃)又は洗浄及び加熱手段によって0.5〜6時間で処理することにより、前面板(1)のガラス基板(10)における保護層(14)と、補助電極(12)と、ブラックマトリックス膜(13)を除去し、濃度0.1%〜10%の弗酸を用いて、浸漬又は超音波振動又は加熱又は洗浄及び加熱手段によって0.5〜3時間で処理することにより、前面板(1)のガラス基板(10)における誘電体層(16)を除去し、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬又は超音波振動又は加熱(温度上限は80℃)又は洗浄及び加熱手段によって0.5〜6時間で処理することにより、前面板(1)のガラス基板(10)における透明電極(11)を除去することにより、ガラス基板(10)を残留する。なお、前記方法により処理したガラス基板(10)を研磨手段によって平面化すると共に、回収することができる。
【0015】
一方、背面板(2)の処理方法に関する三つの実施方法があり、図4に示すように、背面板(2)を処理する第一実施例としては、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬又は超音波振動又は加熱(温度上限は80℃)又は洗浄及び加熱手段によって0.5〜6時間で処理することにより、背面板(2)のガラス基板(20)における隔壁(23)と、蛍光体(24)と、電極(21)を除去し、濃度0.1%〜10%の弗酸を用いて、浸漬又は超音波振動又は加熱又は洗浄及び加熱手段によって数分間ないし2時間で処理することにより、背面板(2)のガラス基板(20)における誘電体層(22)を除去することにより、ガラス基板(20)を残留する方法である。
【0016】
図5に示すように、背面板(2)を処理する第二実施例としては、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬又は超音波振動又は加熱(温度上限は80℃)又は洗浄及び加熱手段によって数分間ないし6時間で処理することにより、背面板(2)のガラス基板(20)における隔壁(23)と、蛍光体(24)と、電極(21)と、誘電体層(22)を一回で除去する方法である。
【0017】
更に、図5に示すように、背面板(2)を処理する第三実施例としては、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬又は超音波振動又は加熱又は洗浄及び加熱手段によって数分間ないし2時間で処理することにより、背面板(2)のガラス基板(20)における隔壁(23)と、蛍光体(24)と、電極(21)と、誘電体層(22)を一回で除去する方法である。
【0018】
上述したように、背面板(2)を処理する三つの実施例では、酸性溶液を用いてガラス基板におけるメッキフィルムを除去した後、ガラス基板の腐食の程度により再利用可能なガラス基板を研磨手段によって平面化すると共に、回収するが、この時、再利用完全に不可能なガラス基板については廃棄処分とする。
【0019】
本発明に係わるプラズマディスプレイパネルの不良品の回収方法によれば、プラズマディスプレイパネルの不良品における有害物質を除去することにより、環境汚染の防止に寄与できる。
【0020】
【発明の効果】
本発明は以上説明したようになるから、次のような効果を得ることができる。
パネルを特定の酸性溶液によって前面板と背面板に分離し、特定の酸性溶液によって夫々前面板と背面板を一回又は数回で腐食分解すると共に、有害物質を分離又は収集し、或いは前面板と背面板のガラス基板を回収し、研磨により再生する又は回収により再利用することができるので、プラズマディスプレイパネルの不良品を有効的に回収処理して再利用することができる。
【図面の簡単な説明】
【図1】本発明に係わるプラズマディスプレイパネルの不良品の回収方法のフローチャートである。
【図2】本発明に係わるプラズマディスプレイパネルの不良品の回収方法によるパネルを前面板及び背面板に分離する状態を示す平面図である。
【図3】本発明に係わるプラズマディスプレイパネルの不良品の回収方法による前面板を分離する状態を示す平面図である。
【図4】本発明に係わるプラズマディスプレイパネルの不良品の回収方法による背面板を分離する第一実施例を示す平面図である。
【図5】本発明に係わるプラズマディスプレイパネルの不良品の回収方法による背面板を分離する第二実施例を示す平面図である。
【図6】現有のプラズマディスプレイパネルの構造を示す平面図である。
【符号の説明】
1 前面板
10 ガラス基板
11 透明電極
12 補助電極
13 ブラックマトリックス膜
14 保護層
15 壁
16 誘電体層
2 背面板
20 ガラス基板
21 電極
22 誘電体層
23 隔壁
24 蛍光体
[0001]
BACKGROUND OF THE INVENTION
The present invention particularly relates to a method for collecting defective products of a plasma display panel, in which defective products of a plasma display panel can be collected and reused.
[0002]
[Prior art]
A conventional cathode ray tube (CRT) monitor has excellent resolution, but is not suitable for a monitor of 40 inches or more because of its large depth and weight. Further, a liquid crystal display (LCD) of a flat panel display (FPD) has features of energy saving and low voltage, but the size and viewing angle of the monitor are limited by the manufacturing technology. On the other hand, a plasma display panel (PDP), which is the same flat monitor, can realize a monitor of 40 inches or more, and is suitable for enlargement of a screen.
[0003]
The existing plasma monitor generally has a panel of an AC type (AC type), a DC type (DC type), or another type. Here, an AC type panel will be described as an example. As shown in FIG. 6, the panel has a front plate (1) and a back plate (2) which are integrally formed, and the front plate (1) is composed of a plurality of plated films made of different materials. The periphery of the display electrode, the black matrix film (13), the dielectric layer (16), the protective layer (14), and the glass substrate (10), in which the plating film is composed of the transparent electrode (11) and the auxiliary electrode (12) And a wall (15).
[0004]
The back plate (2) is a glass substrate (20) provided with a plurality of plated films made of different materials. The plated film comprises an electrode (21), a dielectric layer (22), and a partition wall (23). And phosphors (24) of the three primary colors of red, green, and blue.
[0005]
When combining the back plate (2) and the front plate (1), a specific gas is simultaneously sealed, and the wall (15) of the front plate (1) and the glass substrate of the back plate (2) are provided by hot pressure means. By combining (20) together, a plasma monitor panel is obtained. Further, when a voltage is applied between the display electrode and the electrode (21) in the plasma monitor, a discharge occurs between the front plate (1) and the back plate (2), thereby generating plasma, and this plasma. Is emitted to the phosphor (24) to emit light. This plasma is a state in which positive and negative charged particles that move freely coexist and are electrically neutral.
[0006]
[Problems to be solved by the present invention]
Since it is very difficult to control the production of a plasma monitor having a large screen by the production technology of the plasma monitor, the non-defective product rate is about 50% to 80%, that is, many products or semi-finished products are due to inspection failure. It is a defective product. Under such circumstances, the manufacturer of the plasma monitor has not submitted any specific proposal for the collection of defective products. Further, if the defective product is directly discarded or burned, a problem of environmental pollution is caused, and a large amount of useful metal is contained in the defective product.
[0007]
Therefore, the present invention has been filed and an object of the present invention is to provide a method for recovering defective products of a plasma display panel that can recover defective products of a plasma display panel and reuse them.
[0008]
[Means for Solving the Problems]
The invention of claim 1 of the present application removes the wall in the panel with an acidic solution containing nitric acid, and separates the front plate and the back plate,
The protective layer, the auxiliary electrode, and the black matrix film in the glass substrate of the front plate are removed with an acidic solution containing nitric acid, and the dielectric in the glass substrate is treated with hydrofluoric acid (hydrofluoric acid, hereinafter the same). Removing the body layer, removing the transparent electrode on the glass substrate with an acidic solution containing nitric acid, and leaving the glass substrate;
A plasma display characterized by removing partition walls, phosphors and electrodes on a glass substrate of a back plate with an acid solution containing nitric acid, removing a dielectric layer on the glass substrate with hydrofluoric acid, and leaving the glass substrate. A method for collecting defective panels, and
In the invention of claim 2 of the present application, when the acidic solution containing nitric acid is used, the dipping means is used by using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 1, wherein:
In the invention of claim 3 of the present application, when the acidic solution containing nitric acid is used, the cleaning means is used by using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 1, wherein:
The invention according to claim 4 of the present application is characterized in that when the hydrofluoric acid is used, the dipping means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. A method for collecting defective panels, and
According to a fifth aspect of the present invention, when the hydrofluoric acid is used, the cleaning means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. A method for collecting defective panels, and
In the invention of claim 6 of the present application, when the acidic solution containing nitric acid is used, 0 to 4 times hydrochloric acid and 0.1% to 10% hydrofluoric acid are mixed with 20% to 72% nitric acid. The method for recovering defective products of the plasma display panel according to claim 1, wherein the dipping means is performed using an acidic solution comprising:
In the invention according to claim 7 of the present application, when the acidic solution containing nitric acid is used, 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid are mixed with 20 to 72% nitric acid. The method for recovering defective products of the plasma display panel according to claim 1, wherein cleaning means is performed using the acidic solution formed as described above, and
The invention of claim 8 of the present application is characterized in that the glass substrate of the front plate and the back plate is corroded by an acidic solution and then planarized by a polishing means. How to collect non-defective products and
Invention of Claim 9 of this application removes the wall in a panel by the acidic solution containing nitric acid, and separates a front board and a back board,
The protective layer, the auxiliary electrode, and the black matrix film on the glass substrate of the front plate are removed with an acidic solution containing nitric acid, the dielectric layer on the glass substrate is removed with hydrofluoric acid, and the acidic solution containing nitric acid is used on the glass substrate. Removing the transparent electrode, leaving the glass substrate,
A method for recovering defective products of a plasma display panel, characterized by removing partition walls, phosphors, electrodes and dielectric layers in a glass substrate of a back plate with an acidic solution containing nitric acid, and leaving the glass substrate, and
In the invention of claim 10 of the present application, in the case where the acidic solution containing nitric acid is used, the dipping means is used by using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 9, wherein:
In the invention of claim 11 of the present application, when the acidic solution containing nitric acid is used, the cleaning means is used by using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 9, wherein:
The invention according to claim 12 of the present application is characterized in that when the hydrofluoric acid is used, the dipping means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. A method for collecting defective panels, and
The invention according to claim 13 of the present application is characterized in that, when the hydrofluoric acid is used, the cleaning means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. A method for collecting defective panels, and
In the invention of claim 14 of the present application, when the acidic solution containing nitric acid is used, 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid are mixed with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 9, wherein the dipping means is performed using an acidic solution comprising:
In the invention of claim 15 of the present application, when the acidic solution containing nitric acid is used, 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid are mixed with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 9, wherein the cleaning means is performed using an acidic solution formed by:
The invention of claim 16 of the present application is characterized in that the glass substrate of the front plate and the back plate is corroded by an acidic solution and then planarized by polishing means. How to collect non-defective products and
Invention of Claim 17 of this application removes the wall in a panel with the acidic solution containing nitric acid, and makes it isolate | separate into a front plate and a back plate,
The protective layer, the auxiliary electrode, and the black matrix film on the glass substrate of the front plate are removed with an acidic solution containing nitric acid, the dielectric layer on the glass substrate is removed with hydrofluoric acid, and the acidic solution containing nitric acid is used on the glass substrate. Removing the transparent electrode, leaving the glass substrate,
A method for recovering defective products of a plasma display panel, characterized in that a partition, a phosphor, an electrode, and a dielectric layer in a glass substrate of a back plate are removed by an acidic solution comprising nitric acid and hydrofluoric acid, and the glass substrate remains. ,
In the invention of claim 18 of the present application, in the case where the acidic solution containing nitric acid is used, the dipping means is used by using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 17, wherein:
In the invention of claim 19 of the present application, when the acidic solution containing nitric acid is used, the cleaning means is used by using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 17, wherein:
The invention according to claim 20 of the present application is characterized in that when the hydrofluoric acid is used, the dipping means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. A method for collecting defective panels, and
The invention of claim 21 of the present application is characterized in that, when the hydrofluoric acid is used, the cleaning means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. A method for collecting defective panels, and
According to the invention of claim 22 of the present application, when the acidic solution comprising nitric acid and hydrofluoric acid is used, 0 to 4 times hydrochloric acid and 0.1% to 10% hydrofluoric acid are added to 20% to 72% nitric acid. The method for recovering defective products of the plasma display panel according to claim 17, wherein the dipping means is performed using an acidic solution obtained by mixing an acid;
According to the invention of claim 23 of the present application, when the acidic solution composed of nitric acid and hydrofluoric acid is used, 0 to 4 times hydrochloric acid and 0.1 to 10% of fluorinated acid are added to 20 to 72% of nitric acid. The method for recovering defective products of the plasma display panel according to claim 17, wherein the cleaning means is performed using an acidic solution obtained by mixing an acid;
The invention of claim 24 of the present application is characterized in that the glass substrate of the front plate and the back plate is corroded by an acidic solution and then planarized by a polishing means. How to collect good products,
I will provide a.
[0009]
[Action]
The present invention solves the above-mentioned problem, and separates a panel into a front plate and a back plate with a specific acidic solution, and performs a dipping or cleaning means once or several times with a specific acidic solution, thereby In addition, the electrode, dielectric layer, and phosphor plating film on the glass substrate provided on the back plate can be separated to disassemble the panel and to separate and recycle hazardous substances and useful substances therein. Since the material is recovered, environmental pollution can be prevented and resources can be used effectively.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
[0011]
FIG. 1 is a flowchart of a method for collecting defective products of a plasma display panel according to the present invention, and FIG. 2 shows a state where a panel is separated into a front plate and a back plate by the method for collecting defective products of a plasma display panel according to the present invention. FIG. 3 is a plan view showing a state in which the front plate is separated by the method for collecting defective products of the plasma display panel according to the present invention, and FIG. 4 is a diagram of defective products of the plasma display panel according to the present invention. FIG. 5 is a plan view showing a first embodiment for separating the back plate by the collection method, and FIG. 5 is a plan view showing a second embodiment for separating the back plate by the method for collecting defective products of the plasma display panel according to the present invention. is there.
[0012]
Since all plasma display panels of AC type (AC type), DC type (DC type) and other types are composed of a front plate and a back plate, an AC type plasma display panel will be described here as an example. As shown in FIG. 1, the method for recovering defective products of the plasma display panel according to the present invention is to separate the front plate and the back plate of the panel with a specific acidic solution, and then with the specific acidic solution, respectively. The face plate is separated by corrosion once or several times, and harmful substances are separated or collected, or the glass substrates of the front plate and the back plate are collected and regenerated by polishing or reused by collection.
[0013]
As shown in FIG. 2, the method of separating the panel into the front plate and the back plate using the specific acidic solution uses an acidic solution in which 0 to 4 times hydrochloric acid is mixed with nitric acid having a concentration of 20% to 72%. The wall in the periphery of the front plate (1) and the back plate (2) is treated by immersion or ultrasonic vibration or heating (upper temperature is 80 ° C.) or cleaning and heating means for 0.5 to 6 hours. 15) is removed, and the front plate (1) and the back plate (2) are separated from each other.
[0014]
As shown in FIG. 3, the treatment method for the front plate (1) uses immersion, ultrasonic vibration or heating using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. (Temperature upper limit is 80 ° C.) Or by treatment with washing and heating means for 0.5 to 6 hours, the protective layer (14) on the glass substrate (10) of the front plate (1), the auxiliary electrode (12), By removing the black matrix film (13) and treating with hydrofluoric acid having a concentration of 0.1% to 10% by immersion or ultrasonic vibration or heating or cleaning and heating means for 0.5 to 3 hours. Then, the dielectric layer (16) in the glass substrate (10) of the front plate (1) is removed and immersed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. Or ultrasonic vibration or heating (upper temperature is 80 ° C) or washing And by treatment with 0.5 to 6 hours by the heating means, by removing the transparent electrode (11) in the glass substrate (10) of the front plate (1), remaining the glass substrate (10). The glass substrate (10) treated by the above method can be planarized by a polishing means and recovered.
[0015]
On the other hand, there are three methods for processing the back plate (2). As shown in FIG. 4, as a first example of processing the back plate (2), 0% nitric acid with a concentration of 20% to 72% is used. Back plate by treating with 0.5 to 6 hours by immersion, ultrasonic vibration or heating (temperature upper limit is 80 ° C.) or washing and heating means using acidic solution composed of ˜4 times hydrochloric acid The partition wall (23), the phosphor (24), and the electrode (21) in the glass substrate (20) of (2) are removed, and immersion or ultrasonic waves are performed using hydrofluoric acid having a concentration of 0.1% to 10%. The glass substrate (20) is removed by removing the dielectric layer (22) in the glass substrate (20) of the back plate (2) by treating with vibration or heating or washing and heating means for several minutes to 2 hours. It is a method that remains.
[0016]
As shown in FIG. 5, as a second example of treating the back plate (2), an acidic solution formed by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72% is immersed or The partition (23) on the glass substrate (20) of the back plate (2) and the phosphor (2) are treated by ultrasonic vibration or heating (upper temperature is 80 ° C.) or cleaning and heating means for several minutes to 6 hours. 24), the electrode (21), and the dielectric layer (22) are removed at once.
[0017]
Further, as shown in FIG. 5, as a third embodiment for treating the back plate (2), 0 to 4 times hydrochloric acid and a concentration of 0.1% to 10% fluoride are added to a concentration of 20% to 72% nitric acid. By using an acidic solution formed by mixing an acid, the partition wall (2) in the glass substrate (20) of the back plate (2) is treated by immersion, ultrasonic vibration, heating or cleaning and heating means for several minutes to 2 hours. 23), the phosphor (24), the electrode (21), and the dielectric layer (22) are removed at once.
[0018]
As described above, in the three embodiments for treating the back plate (2), after removing the plating film on the glass substrate using an acidic solution, the glass substrate that can be reused depending on the degree of corrosion of the glass substrate is polished. The glass substrate is flattened and collected, but at this time, glass substrates that cannot be completely reused are discarded.
[0019]
According to the method for recovering defective products of the plasma display panel according to the present invention, it is possible to contribute to prevention of environmental pollution by removing harmful substances in defective products of the plasma display panel.
[0020]
【The invention's effect】
Since the present invention has been described above, the following effects can be obtained.
The panel is separated into a front plate and a back plate with a specific acidic solution, and the front plate and the back plate are corroded and decomposed once or several times with a specific acidic solution, and harmful substances are separated or collected, or the front plate Since the glass substrate of the back plate can be recovered and recovered by polishing or reused by recovery, defective products of the plasma display panel can be effectively recovered and reused.
[Brief description of the drawings]
FIG. 1 is a flowchart of a method for recovering defective products of a plasma display panel according to the present invention.
FIG. 2 is a plan view showing a state where a panel is separated into a front plate and a back plate according to the defective product recovery method of the plasma display panel according to the present invention.
FIG. 3 is a plan view showing a state in which a front plate is separated by a method for collecting defective products of a plasma display panel according to the present invention.
FIG. 4 is a plan view showing a first embodiment for separating a back plate by a method for collecting defective products of a plasma display panel according to the present invention.
FIG. 5 is a plan view showing a second embodiment of separating the back plate by the method for collecting defective plasma display panels according to the present invention.
FIG. 6 is a plan view showing the structure of an existing plasma display panel.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front plate 10 Glass substrate 11 Transparent electrode 12 Auxiliary electrode 13 Black matrix film 14 Protective layer 15 Wall 16 Dielectric layer 2 Back plate 20 Glass substrate 21 Electrode 22 Dielectric layer 23 Partition 24 Phosphor

Claims (24)

硝酸を含む酸性溶液によってパネルにおける壁を除去して、前面板と背面板とを分離させ、
硝酸を含む酸性溶液によって前面板のガラス基板における保護層と補助電極とブラックマトリックス膜を除去すると共に、弗酸によって該ガラス基板における誘電体層を除去し、硝酸を含む酸性溶液によって該ガラス基板における透明電極を除去して、該ガラス基板を残留し、
硝酸を含む酸性溶液によって背面板のガラス基板における隔壁と蛍光体と電極を除去し、弗酸によって該ガラス基板における誘電体層を除去すると共に、該ガラス基板を残留することを特徴とするプラズマディスプレイパネルの不良品の回収方法。
The wall in the panel is removed with an acidic solution containing nitric acid to separate the front and back plates,
The protective layer, the auxiliary electrode, and the black matrix film on the glass substrate of the front plate are removed with an acidic solution containing nitric acid, the dielectric layer on the glass substrate is removed with hydrofluoric acid, and the acidic solution containing nitric acid is used on the glass substrate. Removing the transparent electrode, leaving the glass substrate,
A plasma display characterized by removing partition walls, phosphors and electrodes on a glass substrate of a back plate with an acid solution containing nitric acid, removing a dielectric layer on the glass substrate with hydrofluoric acid, and leaving the glass substrate. How to collect defective panels.
前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。When using the acidic solution containing nitric acid, the dipping means is performed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. A method for recovering defective products of the plasma display panel as described in 1. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。2. When using the acidic solution containing nitric acid, the washing means is performed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. A method for recovering defective products of the plasma display panel as described in 1. 前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、浸漬手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。2. The method for recovering defective products of a plasma display panel according to claim 1, wherein when the hydrofluoric acid is used, the dipping means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. 前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、洗浄手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。2. The method for recovering defective products of a plasma display panel according to claim 1, wherein when the hydrofluoric acid is used, the cleaning means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。When using the acidic solution containing nitric acid, an acidic solution formed by mixing 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid with nitric acid having a concentration of 20% to 72%, The method for recovering defective products of the plasma display panel according to claim 1, wherein dipping means is performed. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。When using the acidic solution containing nitric acid, an acidic solution formed by mixing 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid with nitric acid having a concentration of 20% to 72%, 2. The method for recovering defective products of the plasma display panel according to claim 1, wherein cleaning means is used. 前記前面板と背面板とのガラス基板を酸性溶液によって腐食させた後、研磨手段によって平面化することを特徴とする請求項1に記載のプラズマディスプレイパネルの不良品の回収方法。2. The method for recovering defective products of a plasma display panel according to claim 1, wherein the glass substrate of the front plate and the back plate is corroded by an acidic solution and then flattened by a polishing means. 硝酸を含む酸性溶液によってパネルにおける壁を除去して、前面板と背面板とを分離させ、
硝酸を含む酸性溶液によって前面板のガラス基板における保護層と補助電極とブラックマトリックス膜を除去すると共に、弗酸によって該ガラス基板における誘電体層を除去し、硝酸を含む酸性溶液によって該ガラス基板における透明電極を除去して、該ガラス基板を残留し、
硝酸を含む酸性溶液によって背面板のガラス基板における隔壁と蛍光体と電極と誘電体層を除去し、該ガラス基板を残留することを特徴とするプラズマディスプレイパネルの不良品の回収方法。
The wall in the panel is removed with an acidic solution containing nitric acid to separate the front and back plates,
The protective layer, the auxiliary electrode, and the black matrix film on the glass substrate of the front plate are removed with an acidic solution containing nitric acid, the dielectric layer on the glass substrate is removed with hydrofluoric acid, and the acidic solution containing nitric acid is used on the glass substrate. Removing the transparent electrode, leaving the glass substrate,
A method for recovering defective products of a plasma display panel, comprising removing a partition, a phosphor, an electrode, and a dielectric layer in a glass substrate of a back plate with an acidic solution containing nitric acid, and leaving the glass substrate.
前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。10. When using the acidic solution containing nitric acid, the dipping means is performed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid in nitric acid having a concentration of 20% to 72%. A method for recovering defective products of the plasma display panel as described in 1. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。10. When using the acidic solution containing nitric acid, the washing means is performed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. A method for recovering defective products of the plasma display panel as described in 1. 前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、浸漬手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。10. The method for recovering defective products of a plasma display panel according to claim 9, wherein when the hydrofluoric acid is used, the dipping means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. 前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、洗浄手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。10. The method for recovering defective products of a plasma display panel according to claim 9, wherein when the hydrofluoric acid is used, the cleaning means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。When using the acidic solution containing nitric acid, an acidic solution formed by mixing 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid with nitric acid having a concentration of 20% to 72%, The method for recovering defective products of the plasma display panel according to claim 9, wherein dipping means is performed. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。When using the acidic solution containing nitric acid, an acidic solution formed by mixing 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid with nitric acid having a concentration of 20% to 72%, The method for recovering defective products of the plasma display panel according to claim 9, wherein cleaning means is performed. 前記前面板と背面板とのガラス基板を酸性溶液によって腐食させた後、研磨手段によって平面化することを特徴とする請求項9に記載のプラズマディスプレイパネルの不良品の回収方法。The method for recovering defective products of a plasma display panel according to claim 9, wherein the glass substrates of the front plate and the back plate are corroded by an acidic solution and then flattened by a polishing means. 硝酸を含む酸性溶液によってパネルにおける壁を除去して、前面板と背面板に分離させ、
硝酸を含む酸性溶液によって前面板のガラス基板における保護層と補助電極とブラックマトリックス膜を除去すると共に、弗酸によって該ガラス基板における誘電体層を除去し、硝酸を含む酸性溶液によって該ガラス基板における透明電極を除去し、該ガラス基板を残留し、
硝酸と弗酸から成る酸性溶液によって背面板のガラス基板における隔壁と蛍光体と電極と誘電体層を除去し、該ガラス基板を残留することを特徴とするプラズマディスプレイパネルの不良品の回収方法。
Remove the walls in the panel with an acidic solution containing nitric acid and separate it into a front plate and a back plate,
The protective layer, the auxiliary electrode, and the black matrix film on the glass substrate of the front plate are removed with an acidic solution containing nitric acid, the dielectric layer on the glass substrate is removed with hydrofluoric acid, and the acidic solution containing nitric acid is used on the glass substrate. Removing the transparent electrode, leaving the glass substrate,
A method for recovering defective products of a plasma display panel, comprising removing partition walls, phosphors, electrodes, and dielectric layers on a glass substrate of a back plate with an acidic solution comprising nitric acid and hydrofluoric acid, and leaving the glass substrate.
前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。18. When using the acidic solution containing nitric acid, the dipping means is performed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. A method for recovering defective products of the plasma display panel as described in 1. 前記硝酸を含む酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。18. When using the acidic solution containing nitric acid, the washing means is performed using an acidic solution obtained by mixing 0 to 4 times hydrochloric acid with nitric acid having a concentration of 20% to 72%. A method for recovering defective products of the plasma display panel as described in 1. 前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、浸漬手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。18. The method for recovering defective products of a plasma display panel according to claim 17, wherein when the hydrofluoric acid is used, the dipping means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. 前記弗酸を使用する場合は、濃度0.1%〜10%の弗酸を用いて、洗浄手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。18. The method for recovering defective products of a plasma display panel according to claim 17, wherein when the hydrofluoric acid is used, the cleaning means is performed using hydrofluoric acid having a concentration of 0.1% to 10%. 前記硝酸と弗酸から成る酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、浸漬手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。When the acidic solution comprising nitric acid and hydrofluoric acid is used, an acidic solution obtained by mixing 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 17, wherein immersion means is used. 前記硝酸と弗酸から成る酸性溶液を使用する場合は、濃度20%〜72%の硝酸に0〜4倍の塩酸及び濃度0.1%〜10%の弗酸を混合して成る酸性溶液を用いて、洗浄手段を行うことを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。When the acidic solution comprising nitric acid and hydrofluoric acid is used, an acidic solution obtained by mixing 0 to 4 times hydrochloric acid and 0.1 to 10% hydrofluoric acid with nitric acid having a concentration of 20% to 72%. The method for recovering defective products of the plasma display panel according to claim 17, wherein cleaning means is used. 前記前面板と背面板とのガラス基板を酸性溶液によって腐食させた後、研磨手段によって平面化することを特徴とする請求項17に記載のプラズマディスプレイパネルの不良品の回収方法。18. The method for recovering defective products of a plasma display panel according to claim 17, wherein the glass substrates of the front plate and the back plate are corroded with an acidic solution and then flattened by a polishing means.
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Publication number Priority date Publication date Assignee Title
CN103050352A (en) * 2012-12-24 2013-04-17 四川虹欧显示器件有限公司 Novel regeneration method of PDP (Plasma Display Panel) barrier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103050352A (en) * 2012-12-24 2013-04-17 四川虹欧显示器件有限公司 Novel regeneration method of PDP (Plasma Display Panel) barrier

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