JP2017212451A - Parting device for brittle material substrate - Google Patents

Parting device for brittle material substrate Download PDF

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JP2017212451A
JP2017212451A JP2017128223A JP2017128223A JP2017212451A JP 2017212451 A JP2017212451 A JP 2017212451A JP 2017128223 A JP2017128223 A JP 2017128223A JP 2017128223 A JP2017128223 A JP 2017128223A JP 2017212451 A JP2017212451 A JP 2017212451A
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brittle material
material substrate
protective film
substrate
main surface
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JP6406532B2 (en
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栗山 規由
Noriyoshi Kuriyama
規由 栗山
村上 健二
Kenji Murakami
健二 村上
武田 真和
Masakazu Takeda
真和 武田
久司 五十川
Hisaji Isokawa
久司 五十川
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Mitsuboshi Diamond Industrial Co Ltd
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  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Laser Beam Processing (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
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Abstract

PROBLEM TO BE SOLVED: To provide a parting device for a brittle material substrate which prevents a viscous substance or the like from being deposited/residual, while appropriately protecting an abutted surface of the brittle material substrate.SOLUTION: A parting device comprises: support means for supporting from a lower side a substrate in which a scribe line is formed at a parting target position at the side of one principal face of the substrate, by sticking the one principal surface around a viscous film while providing a marginal area, and sticking a portion that is not in contact with the substrate, to the marginal area of the viscous film while bringing a protective film that does not have viscosity, into contact with the other entire principal face; an upper blade of which the tip can be abutted to a predetermined parting position at the side of the other principal face corresponding to the position where the scribe line is formed; and means for moving the upper blade downwards while abutting the upper blade to the predetermined parting position on the other principal face corresponding to the position where the scribe line is formed.SELECTED DRAWING: Figure 4

Description

本発明は、脆性材料基板を分断する方法及び装置に関し、特に、3点曲げ方式にて分断する方法及び装置に関する。   The present invention relates to a method and an apparatus for dividing a brittle material substrate, and more particularly to a method and an apparatus for dividing by a three-point bending method.

半導体基板などの脆性材料基板を分割(チップの個片化)する手法として、ストリートと呼ばれる分割予定ラインに円形ホイールなどの刃先もしくはレーザーにて分割起点となるスクライブラインを形成し、その後ブレーク装置で脆性材料基板に対し3点曲げの手法にて曲げ応力を加えて分割起点からクラック(亀裂)を伸展させることによって基板を分断する態様がすでに公知である(例えば、特許文献1参照)。   As a method of dividing a brittle material substrate such as a semiconductor substrate (dividing chips into chips), a scribe line that is the starting point of division is formed with a cutting edge of a circular wheel or a laser on a planned division line called a street, and then a break device A mode is known in which a substrate is divided by applying a bending stress to a brittle material substrate by a three-point bending method and extending a crack from the division starting point (see, for example, Patent Document 1).

係る分断は、円形環状もしくは矩形環状の枠体であるダイシングフレームに張設された粘着性を有するダイシングテープの被接着面に分断対象たる脆性材料基板を貼付固定した状態で行うのが一般的である。   Such division is generally performed in a state in which a brittle material substrate to be divided is attached and fixed to a surface to be bonded of a dicing tape having adhesiveness stretched on a dicing frame that is a circular ring or a rectangular ring frame. is there.

また、分断に先立ち、キズ防止や汚染物の付着防止などを目的として、少なくとも脆性材料基板のブレーク装置の上刃(ブレーク刃)が当接する側の面(ブレーク時に下方支持される側の面の反対面)に、粘着力の弱い保護フィルムを貼付しておく態様も、すでに公知である(例えば、特許文献2参照)。   Prior to dividing, for the purpose of preventing scratches and preventing the adhesion of contaminants, at least the surface on the side where the upper blade (break blade) of the break device of the brittle material substrate abuts (the surface on the side supported downward during the break). An aspect in which a protective film having a weak adhesive force is attached to the opposite surface) is already known (see, for example, Patent Document 2).

特開2014−83821号公報JP 2014-83821 A 特許4198601号公報Japanese Patent No. 4198601

ブレーク装置による脆性材料基板の分断は、下方支持された脆性材料基板の上面(被当接面)側に上刃(ブレーク刃)を当接させた状態でさらに押し込み、上刃先端の極小エリアに荷重を集中させることによってなされる。それゆえ、特許文献2に開示されているように、保護フィルムを使用した状態で分断を行った場合、たとえその粘着性が弱いものであったとしても、係る荷重集中の結果として、保護フィルムの粘着物が分断後の脆性材料基板に付着・残存してしまうことがある。   To break the brittle material substrate by the break device, press the upper blade (break blade) into contact with the upper surface (contacted surface) of the brittle material substrate supported below, and push it into the minimal area at the tip of the upper blade. This is done by concentrating the load. Therefore, as disclosed in Patent Document 2, when the protective film is used for separation, even if the adhesiveness is weak, as a result of such load concentration, the protective film The adhesive may adhere to or remain on the brittle material substrate after being divided.

本発明は上記課題に鑑みてなされたものであり、脆性材料基板の被当接面を好適に保護しつつも粘着物等の付着・残存が生じることのない脆性材料基板の分断方法を提供することを目的とする。   The present invention has been made in view of the above problems, and provides a method for dividing a brittle material substrate that suitably protects the contacted surface of the brittle material substrate but does not cause adhesion or remaining of an adhesive or the like. For the purpose.

上記課題を解決するため、本発明の脆性材料基板の分断装置は、脆性材料基板を分断するための装置であって、前記脆性材料基板の一方主面側の分断対象位置にスクライブラインが形成され、当該一方主面が粘着フィルムに当該粘着フィルムの周囲に余白領域を設けつつ貼り付けられ、前記脆性材料基板の他方主面の全面に、前記脆性材料基板に対する粘着性を有さない保護フィルムを接触させつつ、前記保護フィルムの前記脆性材料基板とは接触していない部分を前記粘着フィルムの前記余白領域に貼付することによって前記保護フィルムを配置されており、前記脆性材料基板を下方から支持する支持手段、先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接可能な上刃と、前記上刃を前記スクライブラインの形成位置に対応する前記他方主面の分断予定位置に当接せるようにしながら下降させる手段と、を備えることを特徴とする。
発明の分断装置は、例えば、脆性材料基板を分断する方法であって、脆性材料基板の一方主面側の分断対象位置にスクライブラインを形成するスクライブライン形成工程と、前記スクライブラインが形成されてなる前記脆性材料基板の前記一方主面を、周囲に余白領域を設けつつ粘着フィルムに貼り付ける基板貼付工程と、前記脆性材料基板に対する粘着性を有さない保護フィルムを前記脆性材料基板の他方主面の全面に接触させつつ前記保護フィルムの前記脆性材料基板とは接触していない部分を前記粘着フィルムの前記余白領域に貼付することによって前記保護フィルムを前記脆性材料基板上に配置する保護フィルム配置工程と、前記保護フィルムが配置されてなる前記脆性材料基板を下方から支持した状態で、上刃の先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接させるようにしながら下降させることによって前記脆性材料基板を分断する分断工程と、を備えることを特徴とする分断方法に使用することができる
In order to solve the above problems, a brittle material substrate cutting device according to the present invention is a device for cutting a brittle material substrate, and a scribe line is formed at a cutting target position on one main surface side of the brittle material substrate. The one main surface is attached to the adhesive film while providing a blank area around the adhesive film, and a protective film having no adhesiveness to the brittle material substrate is provided on the entire other main surface of the brittle material substrate. The protective film is disposed by affixing a portion of the protective film that is not in contact with the brittle material substrate to the blank area of the adhesive film while being in contact, and supports the brittle material substrate from below. A support means, an upper blade whose tip can be brought into contact with a predetermined cutting position on the other main surface side corresponding to the formation position of the scribe line; Characterized in that it comprises means for lowering while so as to abut against the cutting scheduled position of the other main surface corresponding to the in-formation position.
The cutting apparatus of the present invention is, for example, a method for cutting a brittle material substrate, wherein a scribe line forming step for forming a scribe line at a cutting target position on one main surface side of the brittle material substrate, and the scribe line is formed. A substrate sticking step of attaching the one main surface of the brittle material substrate to an adhesive film while providing a marginal area around the one main surface; and a protective film having no adhesiveness to the brittle material substrate on the other side of the brittle material substrate A protective film in which the protective film is disposed on the brittle material substrate by affixing a portion of the protective film that is not in contact with the brittle material substrate to the blank area of the adhesive film while being in contact with the entire main surface. In the state where the brittle material substrate on which the protective film is disposed is supported from below, the tip of the upper blade is placed on the scissors. Using the cutting method, characterized by comprising a dividing step of dividing the brittle material substrate by lowering while so as to abut against the cutting scheduled position of the other main surface side corresponding to the formation position of Iburain Can

発明の分断装置は、例えば、脆性材料基板を分断する方法であって、脆性材料基板の一方主面側の分断対象位置にスクライブラインを形成するスクライブライン形成工程と、前記スクライブラインが形成されてなる前記脆性材料基板の前記一方主面を、枠体に粘着フィルムを張設してなる基板保持部材の前記粘着フィルムに貼り付ける基板貼付工程と、前記脆性材料基板に対する粘着性を有さない保護フィルムを前記脆性材料基板の他方主面の全面に接触させつつ前記保護フィルムの前記脆性材料基板とは接触していない部分を前記基板保持部材に固定することによって前記保護フィルムを前記脆性材料基板上に配置する保護フィルム配置工程と、前記保護フィルムが配置されてなる前記脆性材料基板を下方から支持した状態で、上刃の先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接させるようにしながら下降させることによって前記脆性材料基板を分断する分断工程と、を備えることを特徴とする分断方法に使用することができる The cutting apparatus of the present invention is, for example, a method for cutting a brittle material substrate, wherein a scribe line forming step for forming a scribe line at a cutting target position on one main surface side of the brittle material substrate, and the scribe line is formed. A substrate attaching step of attaching the one main surface of the brittle material substrate to the adhesive film of a substrate holding member formed by stretching an adhesive film on a frame, and has no adhesiveness to the brittle material substrate Fixing the protective film to the brittle material substrate by fixing a portion of the protective film that is not in contact with the brittle material substrate to the substrate holding member while contacting the entire other main surface of the brittle material substrate with the protective film. In the state which supported the brittle material substrate by which the protective film arrangement | positioning process arrange | positioned on the top and the said protective film are arrange | positioned from the downward direction, the tip of an upper blade Cutting method characterized by and a dividing step of dividing the brittle material substrate by the lowering while so as to abut against the cutting scheduled position of the other main surface side corresponding to the formation position of the scribe line Can be used for

発明の分断装置は、例えば、脆性材料基板を分断する方法であって、あらかじめ一方主面側の分断対象位置にスクライブラインが形成されてなる脆性材料基板の前記一方主面を、周囲に余白領域を設けつつ粘着フィルムに貼り付けるとともに、前記脆性材料基板に対する粘着性を有さない保護フィルムを前記脆性材料基板の他方主面の全面に接触させつつ前記保護フィルムの前記脆性材料基板とは接触していない部分を前記粘着フィルムの前記余白領域に貼付したうえで、前記保護フィルムが配置されてなる前記脆性材料基板を下方から支持し、上刃の先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接させるようにしながら下降させることによって前記脆性材料基板を分断する、ことを特徴とする分断方法に使用することができる The cutting apparatus according to the present invention is a method for cutting a brittle material substrate, for example, and includes a blank space around the one main surface of the brittle material substrate in which a scribe line is previously formed at a cutting target position on one main surface side. Affixing to the adhesive film while providing a region, and contacting the brittle material substrate of the protective film while contacting the entire other main surface of the brittle material substrate with a protective film having no adhesiveness to the brittle material substrate After affixed to the blank area of the adhesive film, the brittle material substrate on which the protective film is disposed is supported from below, and the tip of the upper blade corresponds to the formation position of the scribe line. said dividing the brittle material substrate by lowering while so as to abut against the cutting scheduled position of the other main surface side, it is characterized minute It can be used in the process.

発明の分断装置は、例えば、脆性材料基板を分断する方法であって、あらかじめ一方主面側の分断対象位置にスクライブラインが形成されてなる脆性材料基板の前記一方主面を、枠体に粘着フィルムを張設してなる基板保持部材の前記粘着フィルムに貼り付けるとともに、前記脆性材料基板に対する粘着性を有さない保護フィルムを前記脆性材料基板の他方主面の全面に接触させつつ前記保護フィルムの前記脆性材料基板とは接触していない部分を前記基板保持部材に固定したうえで、前記保護フィルムが配置されてなる前記脆性材料基板を下方から支持し、上刃の先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接させるようにしながら下降させることによって前記脆性材料基板を分断する、ことを特徴とする分断方法に使用することができる The cutting apparatus of the present invention is, for example, a method for cutting a brittle material substrate, wherein the one main surface of the brittle material substrate in which a scribe line is formed in advance on a cutting target position on the one main surface side is used as a frame. Adhering to the adhesive film of the substrate holding member formed by stretching the adhesive film, and the protective film having no adhesiveness to the brittle material substrate while contacting the entire surface of the other main surface of the brittle material substrate A portion of the film that is not in contact with the brittle material substrate is fixed to the substrate holding member, the brittle material substrate on which the protective film is arranged is supported from below, and the tip of the upper blade is the scribe line The brittle material substrate is divided by being lowered while being brought into contact with the planned division position on the other main surface side corresponding to the formation position of It can be used in the cutting method according to symptoms.

発明の分断装置は、脆性材料基板を分断するための装置であって、一方主面側の分断対象位置にスクライブラインが形成されてなる前記脆性材料基板の前記一方主面を、周囲に余白領域を設けつつ粘着フィルムに貼り付ける基板貼付手段と、前記脆性材料基板に対する粘着性を有さない保護フィルムを前記脆性材料基板の他方主面の全面に接触させつつ前記保護フィルムの前記脆性材料基板とは接触していない部分を前記粘着フィルムの前記余白領域に貼付することによって前記保護フィルムを前記脆性材料基板上に配置する保護フィルム配置手段と、前記保護フィルムが配置されてなる前記脆性材料基板を下方から支持する支持手段と、先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接可能な上刃と、前記上刃を前記スクライブラインの形成位置に対応する前記他方主面の分断予定位置に当接せるようにしながら下降させる手段と、を備えることを特徴とすることもできる A cutting apparatus according to the present invention is a device for cutting a brittle material substrate, and the one main surface of the brittle material substrate in which a scribe line is formed at a position to be cut on one main surface side is surrounded by a margin. Substrate pasting means for adhering to the adhesive film while providing a region, and the brittle material substrate of the protective film while contacting a protective film having no adhesiveness to the brittle material substrate over the other main surface of the brittle material substrate A protective film placement means for placing the protective film on the brittle material substrate by affixing a portion not in contact with the blank area of the adhesive film, and the brittle material substrate on which the protective film is placed And an upper blade capable of abutting the tip with the scheduled cutting position on the other main surface side corresponding to the formation position of the scribe line. It may also be characterized in that it comprises a means for lowering while allowing contact to the upper blade to be cut position of said other major surface corresponding to the formation position of the scribe line.

発明によれば、分断によって得られる個片に対する粘着物の付着・残存といった不具合を生じさせることなく脆性材料基板を分断することができる。 ADVANTAGE OF THE INVENTION According to this invention, a brittle material board | substrate can be parted, without producing malfunctions, such as adhesion of the adhesion thing with respect to the piece obtained by parting, and residual.

脆性材料基板1を例示する断面図である。1 is a cross-sectional view illustrating a brittle material substrate 1. スクライブラインSを形成した脆性材料基板1を粘着フィルム2に貼付する様子を示す図である。It is a figure which shows a mode that the brittle material board | substrate 1 in which the scribe line S was formed is stuck on the adhesion film 2. FIG. 保護フィルム4を脆性材料基板1の主面1b上に載置する様子を示す図である。It is a figure which shows a mode that the protective film 4 is mounted on the main surface 1b of the brittle material board | substrate 1. FIG. 主面1bからはみ出た保護フィルム4の外周部分を粘着フィルム2の粘着面2aに貼付する様子を示す図である。2 is a view showing a state in which an outer peripheral portion of the protective film 4 protruding from the main surface 1b is attached to the adhesive surface 2a of the adhesive film 2. FIG. 脆性材料基板1を分断する様子を示す図である。It is a figure which shows a mode that the brittle material board | substrate 1 is parted.

本実施の形態においては、脆性材料基板をいわゆる3点曲げ方式にて分断する手法について説明する。図1は、本発明の実施の形態において分断対象とされる脆性材料基板1を例示する断面図である。図2ないし図5は、脆性材料基板1を用意した後、分断に至るまでに行う主な手順につき、模式的に示す図である。   In this embodiment, a method for dividing a brittle material substrate by a so-called three-point bending method will be described. FIG. 1 is a cross-sectional view illustrating a brittle material substrate 1 to be divided in the embodiment of the present invention. FIG. 2 to FIG. 5 are diagrams schematically showing main procedures performed after the brittle material substrate 1 is prepared and divided.

脆性材料基板1としては、例えば、半導体基板(シリコン基板など)やガラス基板などが例示される。半導体基板の一方主面には、所定のデバイス(例えば、CMOSセンサなど)用のパターンが形成されていてもよい。   Examples of the brittle material substrate 1 include a semiconductor substrate (such as a silicon substrate) and a glass substrate. A pattern for a predetermined device (for example, a CMOS sensor) may be formed on one main surface of the semiconductor substrate.

脆性材料基板1を分断するにあたっては、まず、図1に示すように、その一方主面1aの分断予定位置にスクライブラインSを形成する。図1においては、図面に垂直な方向に分断予定位置およびスクライブラインSが延在する場合を表している。スクライブラインSは、脆性材料基板1の厚み方向に伸展するクラック(微小クラック)が脆性材料基板1の主面1a側において線状に連続したものである。   In dividing the brittle material substrate 1, first, as shown in FIG. 1, a scribe line S is formed at the planned division position of the one main surface 1 a. FIG. 1 shows a case where the planned cutting position and the scribe line S extend in a direction perpendicular to the drawing. The scribe line S is a line in which cracks (microcracks) extending in the thickness direction of the brittle material substrate 1 are linearly continued on the main surface 1 a side of the brittle material substrate 1.

なお、図1においては図示の簡単のため一のスクライブラインSのみを示しているが、例えば脆性材料基板1を短冊状もしくは格子状に分断するなど、複数箇所で分断して多数の個片を得るような場合には、全ての分断予定位置に対してスクライブラインSを形成する。以降、特に断らないが、その場合には、後段の処理についても、全ての分断予定位置に対してなされることになる。   In FIG. 1, only one scribe line S is shown for simplicity of illustration. However, for example, the brittle material substrate 1 is divided into a strip shape or a lattice shape, so that a large number of pieces are divided into a plurality of portions. In such a case, the scribe line S is formed for all the scheduled division positions. Thereafter, although not specifically stated, in this case, the subsequent processing is also performed for all scheduled division positions.

スクライブラインSの形成には、公知の技術を適用可能である。例えば、超硬合金、焼結ダイヤモンド、単結晶ダイヤモンド等からなり、円板状をなし、かつ、外周部分に刃として機能する稜線を備えるカッターホイール(スクライブホイール)を、分断予定位置に沿って圧接転動させることによって、スクライブラインSを形成する態様であってもよいし、分断予定位置に沿ってダイヤモンドポイントにより罫描くことによってスクライブラインSを形成する態様であってもよいし、レーザ(例えば、紫外線(UV)レーザ)照射によるアブレーションや変質層の形成によってスクライブラインSを形成する態様であってもよいし、レーザ(例えば、赤外線(IR)レーザ)による加熱と冷却とによる熱応力によってスクライブラインSを形成する態様であってもよい。   A known technique can be applied to the formation of the scribe line S. For example, a cutter wheel (scribing wheel) made of cemented carbide, sintered diamond, single crystal diamond, etc., which has a disk shape and has a ridge line that functions as a blade on the outer peripheral part, is pressed along the planned cutting position. It may be a mode in which the scribe line S is formed by rolling, a mode in which the scribe line S is formed by drawing a diamond point along the scheduled cutting position, or a laser (for example, The scribe line S may be formed by ablation by irradiation with ultraviolet (UV) laser or formation of an altered layer, or scribe by thermal stress due to heating and cooling by a laser (for example, infrared (IR) laser). The aspect which forms the line S may be sufficient.

次に、図2に示すように、スクライブラインSを形成した脆性材料基板1を、ダイシングテープとも称される粘着フィルム2に貼付する。粘着フィルム2は、その一方主面が粘着面2aとなっており、ダイシングフレームとも称される、円形環状もしくは矩形環状の枠体3に張設されてなる。また、粘着フィルム2としては、脆性材料基板1を貼付した際に枠体3と脆性材料基板との間に余白領域(非貼付領域)が形成されるサイズのものを用意する。脆性材料基板1を貼付するにあたっては、矢印AR1にて示すようにスクライブラインSが形成されてなる側の主面1aを粘着面2aに当接させ、他方主面1bが上面となるようにする。以降、粘着フィルム2が枠体3に張設されたものを、基板保持部材と総称する。   Next, as shown in FIG. 2, the brittle material substrate 1 on which the scribe line S is formed is attached to an adhesive film 2 also called a dicing tape. The pressure-sensitive adhesive film 2 has one main surface serving as a pressure-sensitive adhesive surface 2a, and is stretched around a circular ring or rectangular ring frame 3, which is also called a dicing frame. Moreover, as the adhesive film 2, the thing of the size in which a blank area | region (non-sticking area | region) is formed between the frame 3 and a brittle material board | substrate is prepared when the brittle material board | substrate 1 is affixed. When affixing the brittle material substrate 1, the main surface 1a on which the scribe line S is formed is brought into contact with the adhesive surface 2a as shown by an arrow AR1, and the other main surface 1b is the upper surface. . Hereinafter, the one in which the adhesive film 2 is stretched around the frame 3 is generically referred to as a substrate holding member.

脆性材料基板1を粘着フィルム2に貼付するためには、例えば、枠体3を水平状態に支持し、且つ、枠体3と同一平面内の枠体3の開口部(内環部)内に脆性材料基板1をスクライブラインが形成された一方主面を上向きとして支持することのできる支持手段(テーブル等)と、枠体3を覆う広さに裁断された粘着フィルム2に押し広げる張力を付加しながら粘着フィルム2を枠体3及び脆性材料基板1の上面上に配置することのできる粘着フィルム配置手段と、粘着フィルム2を上面側から押圧することによって枠体2及び脆性材料基板1に貼り付けることのできる粘着フィルム押圧手段と、を有する粘着フィルム貼付装置(基板貼付手段)を使用することができる。係る粘着フィルム貼付装置を用いる場合、基板保持部材の形成と脆性材料基板1の貼付とが同時に行われることになる。   In order to attach the brittle material substrate 1 to the adhesive film 2, for example, the frame 3 is supported in a horizontal state, and in the opening (inner ring) of the frame 3 in the same plane as the frame 3. A supporting means (table or the like) that can support the brittle material substrate 1 with the scribe line formed on one main surface facing upward, and tension that pushes the adhesive film 2 that is cut to a width covering the frame 3 are added. The adhesive film 2 can be placed on the frame 3 and the brittle material substrate 1 by pressing the adhesive film 2 from the upper surface side. An adhesive film sticking device (substrate sticking means) having an adhesive film pressing means that can be attached can be used. When such an adhesive film sticking apparatus is used, the formation of the substrate holding member and the sticking of the brittle material substrate 1 are performed simultaneously.

続いて、保護フィルム4を用意する。ただし、本実施の形態において用いる保護フィルム4は、特許文献2に開示されていたものとは異なり、少なくとも脆性材料基板1に対する粘着性を有していないものである。また、図3に示すように、本実施の形態においては、脆性材料基板1の平面サイズよりも十分に大きなサイズ(面積)の保護フィルム4を用いるものとする。係る保護フィルム4の材質としては、例えば、ポリエステル(PET)、ポ
リ塩化ビニル(PVC)、ポリオレフィンなどを例示することができる。
Subsequently, the protective film 4 is prepared. However, the protective film 4 used in the present embodiment is different from that disclosed in Patent Document 2 and has no adhesiveness to at least the brittle material substrate 1. Further, as shown in FIG. 3, in the present embodiment, a protective film 4 having a size (area) sufficiently larger than the planar size of the brittle material substrate 1 is used. Examples of the material of the protective film 4 include polyester (PET), polyvinyl chloride (PVC), and polyolefin.

そして、図3において矢印AR2にて示すように、係る保護フィルム4を脆性材料基板1の上方を向いた主面1bに近づけていき、該主面1b上に載置する。さらには、図4に示すように、係る載置状態を保ちつつ、主面1bからはみ出た保護フィルム4の外周部分(脆性材料基板1とは接触していない部分)を、粘着フィルム2の粘着面2aであって脆性材料基板1の周囲に存在する余白領域に貼付する。これによって、脆性材料基板1のうち少なくとも主面1bの上に保護フィルム4が配置固定された状態が実現される。上述したように、保護フィルム4は脆性材料基板1に対する粘着性を有していないので、係る配置状態においては、保護フィルム4は脆性材料基板1の主面1bの全面と隙間なく接触してはいるものの、粘着してはいない。   Then, as shown by an arrow AR2 in FIG. 3, the protective film 4 is brought close to the main surface 1b facing upward of the brittle material substrate 1 and placed on the main surface 1b. Furthermore, as shown in FIG. 4, the outer peripheral portion of the protective film 4 that protrudes from the main surface 1 b (the portion that is not in contact with the brittle material substrate 1) is kept in the pressure-sensitive adhesive film 2 while maintaining the mounting state. It is affixed to the blank area which exists on the surface 2a and around the brittle material substrate 1. Thereby, a state in which the protective film 4 is arranged and fixed on at least the main surface 1b of the brittle material substrate 1 is realized. As described above, since the protective film 4 does not have adhesiveness to the brittle material substrate 1, in such an arrangement state, the protective film 4 is not in contact with the entire surface of the main surface 1 b of the brittle material substrate 1 without a gap. Yes, but not sticky.

保護フィルム4を脆性材料基板1のスクライブラインの形成されていない他方主面の全面に接触させつつ粘着フィルム2の前記余白領域に貼付するには、例えば、枠体3に張設された粘着フィルム2にスクライブラインが形成された一方主面が貼り付けられた脆性材料基板1の他方主面側を上向きとして枠体3及び脆性材料基板1を支持することのできる支持手段(テーブル等)と、脆性材料基板1を覆う広さに裁断された保護フィルム4に押し広げる張力を付加しながら保護フィルム4を脆性材料基板2の上面(他方主面)上に配置することのできる保護フィルム配置手段と、保護フィルム4の脆性材料基板2の上面上からはみ出た部分(脆性材料基板1とは接触していない部分)を上面側から押圧することによって粘着フィルム2の余白領域に貼付する保護フィルム貼付手段(ローラ等)と、を有する保護フィルム配置手段を使用することができる。   In order to attach the protective film 4 to the blank area of the adhesive film 2 while being in contact with the other main surface of the brittle material substrate 1 where the scribe line is not formed, for example, an adhesive film stretched on the frame 3 A support means (table or the like) that can support the frame 3 and the brittle material substrate 1 with the other main surface side of the brittle material substrate 1 on which the one main surface having the scribe line formed in 2 is attached upward, Protective film disposing means capable of disposing the protective film 4 on the upper surface (the other main surface) of the brittle material substrate 2 while applying a tension to push the protective film 4 cut to a width covering the brittle material substrate 1; The margin of the adhesive film 2 by pressing the portion of the protective film 4 that protrudes from the upper surface of the brittle material substrate 2 (the portion that is not in contact with the brittle material substrate 1) from the upper surface side. A protective film sticking means for sticking the band (rollers and the like), it may be used a protective film arrangement means having.

本実施の形態においては、以上のような態様にて脆性材料基板1が貼付されてなるとともに保護フィルム4が主面1b上に配置されてなる基板保持部材を、ブレーク装置による分断に供する。具体的には、図5に示すように、水平方向において離隔させた2つの下刃101A、101Bの間にスクライブラインSの形成箇所を位置させる態様にて、換言すれば、互いに平行に配置された2つの下刃101A、101Bの間においてスクライブラインSをそれぞれに平行に配置させる態様にて、脆性材料基板1の主面1b上に保護フィルム4が配置された状態の基板保持部材を2つの下刃101A、101Bによって下方から支持させる。なお、下刃101A、101Bは脆性材料基板1に比して十分に剛性を有する部材にて設けられる。   In the present embodiment, the substrate holding member in which the brittle material substrate 1 is stuck in the above-described manner and the protective film 4 is disposed on the main surface 1b is subjected to division by a break device. Specifically, as shown in FIG. 5, the scribe line S is formed between the two lower blades 101 </ b> A and 101 </ b> B separated in the horizontal direction, in other words, they are arranged in parallel to each other. Two substrate holding members in a state in which the protective film 4 is disposed on the main surface 1b of the brittle material substrate 1 are arranged in such a manner that the scribe lines S are disposed in parallel between the two lower blades 101A and 101B. The lower blades 101A and 101B are supported from below. The lower blades 101 </ b> A and 101 </ b> B are provided by members having sufficient rigidity as compared with the brittle material substrate 1.

前記ブレーク装置としては、ブレーク刃を有する公知のブレーク装置を使用することができる。前記ブレーク装置としては、例えば、保護フィルム4が配置されてなる脆性材料基板1を下方から支持する支持手段(下刃101A、101B、テーブル等)と、先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接可能な上刃(ブレーク刃)と、前記上刃を前記スクライブラインの形成位置に対応する前記他方主面の分断予定位置に当接せるようにしながら下降させる手段と、を備えるブレーク装置が例示される。   As the break device, a known break device having a break blade can be used. As the break device, for example, support means (lower blades 101A, 101B, a table, etc.) for supporting the brittle material substrate 1 on which the protective film 4 is disposed, and the tip correspond to the formation position of the scribe line. An upper blade (break blade) that can be brought into contact with the scheduled cutting position on the other main surface side, and the upper blade is brought into contact with the scheduled cutting position on the other main surface corresponding to the formation position of the scribe line. And a break device including a lowering means.

あるいは、脆性材料基板1を保持してなる基板保持部材を下刃101A、101Bによって下方から支持させた後に保護フィルム4を配置するようにしてもよい。   Alternatively, the protective film 4 may be disposed after a substrate holding member that holds the brittle material substrate 1 is supported from below by the lower blades 101A and 101B.

上述の支持状態を得た後、図5に矢印AR3にて示すように、上刃(ブレーク刃)102を上方からスクライブラインSの形成位置に向けて下降させてその先端を保護フィルム4を介して脆性材料基板1に当接させ、さらに上刃102を押し込むように下降させる。これにより、スクライブラインSから基板厚み方向にクラックが伸展して、脆性材料基板1が分断される。   After obtaining the above support state, the upper blade (break blade) 102 is lowered from above toward the position where the scribe line S is formed as indicated by an arrow AR3 in FIG. Then, it is brought into contact with the brittle material substrate 1 and further lowered so as to push in the upper blade 102. Thereby, a crack extends in the substrate thickness direction from the scribe line S, and the brittle material substrate 1 is divided.

このとき、保護フィルム4は脆性材料基板1に対し粘着していないことから、特許文献2に開示されてなる技術のように粘着性のある保護フィルムを用いた場合に生じる、粘着物の付着・残存といった不具合が生じることはない。   At this time, since the protective film 4 is not adhered to the brittle material substrate 1, adhesion / adhesion caused when an adhesive protective film is used as in the technique disclosed in Patent Document 2 There is no problem of remaining.

また、脆性材料基板1と保護フィルム4とは互いに直接には固定されてはいないものの、保護フィルム4の外周部分は粘着フィルム2に貼付固定されてなることから、分断に際して保護フィルム4に位置ずれが生じることはない。さらには、分断によって得られた個片(チップ)が浮き上がって近傍の個片と接触し、端部にカケが生じたりすることもない。   Further, although the brittle material substrate 1 and the protective film 4 are not directly fixed to each other, the outer peripheral portion of the protective film 4 is stuck and fixed to the adhesive film 2, so that the position shifts to the protective film 4 when dividing. Will not occur. Furthermore, the pieces (chips) obtained by the division do not float and come into contact with neighboring pieces, and there is no occurrence of chipping at the ends.

以上、説明したように、本実施の形態によれば、円形環状もしくは矩形環状の枠体に張設されてなる保護フィルムに貼付された状態の脆性材料基板を3点曲げ方式にて分断するに先立って、上刃(ブレーク刃)の被当接面となる脆性材料基板の上面の全面に粘着性のない保護フィルムを隙間なく接触させるとともに、該保護フィルムの外周部分を保護フィルムに貼付固定しておくようにすることで、分断によって得られる個片に対する粘着物の付着・残存といった不具合を生じさせることなく脆性材料基板を分断することができる。   As described above, according to the present embodiment, a brittle material substrate in a state of being attached to a protective film stretched on a circular annular or rectangular annular frame is divided by a three-point bending method. Prior to making contact with a non-adhesive protective film on the entire upper surface of the brittle material substrate, which is the contact surface of the upper blade (break blade), the outer peripheral portion of the protective film is fixed to the protective film. By doing so, it is possible to cut the brittle material substrate without causing problems such as adhesion / remaining of an adhesive to the pieces obtained by the cutting.

<変形例>
上述の実施の形態においては、保護フィルム4の外周部分を粘着フィルム2の粘着面2aの余白領域に貼付することによって保護フィルム4を配置固定するようにしているが、保護フィルム4を配置固定する態様はこれに限られない。例えば、基板保持部材の枠体3に保護フィルム4の外周部分を挟持固定する手段や貼付固定可能な粘着性を有する領域などが設けられるような態様であってもよい。係る場合、保護フィルム4を貼付するための余白領域を設ける必要がない。
<Modification>
In the above-described embodiment, the protective film 4 is arranged and fixed by sticking the outer peripheral portion of the protective film 4 to the blank area of the adhesive surface 2a of the adhesive film 2, but the protective film 4 is arranged and fixed. The aspect is not limited to this. For example, a mode in which a means for holding and fixing the outer peripheral portion of the protective film 4 or a sticky adhesive area is provided on the frame 3 of the substrate holding member may be used. In such a case, it is not necessary to provide a blank area for attaching the protective film 4.

1 脆性材料基板
1a、1b (脆性材料基板の)主面
2 粘着フィルム
2a (粘着フィルムの)粘着面
3 枠体 4 保護フィルム
101A、101B 下刃
102 上刃
S スクライブライン
DESCRIPTION OF SYMBOLS 1 Brittle material board | substrate 1a, 1b Main surface 2 (Adhesive film board | substrate) 2 Adhesive film 2a (Adhesive film adhesive face) 3 Frame 4 Protective film 101A, 101B Lower blade 102 Upper blade S Scribe line

Claims (1)

脆性材料基板を分断するための装置であって、前記脆性材料基板の一方主面側の分断対象位置にスクライブラインが形成され、当該一方主面が粘着フィルムに当該粘着フィルムの周囲に余白領域を設けつつ貼り付けられ、前記脆性材料基板の他方主面の全面に、前記脆性材料基板に対する粘着性を有さない保護フィルムを接触させつつ、前記保護フィルムの前記脆性材料基板とは接触していない部分を前記粘着フィルムの前記余白領域に貼付することによって前記保護フィルムを配置されており、前記脆性材料基板を下方から支持する支持手段、先端を前記スクライブラインの形成位置に対応する前記他方主面側の分断予定位置に当接可能な上刃と、前記上刃を前記スクライブラインの形成位置に対応する前記他方主面の分断予定位置に当接せるようにしながら下降させる手段と、を備えることを特徴とする脆性材料基板の分断装置。An apparatus for dividing a brittle material substrate, wherein a scribe line is formed at a position to be divided on one main surface side of the brittle material substrate, and the one main surface has a blank area around the adhesive film. The protective film that is stuck while being provided and is in contact with the entire surface of the other main surface of the brittle material substrate is not in contact with the brittle material substrate of the protective film while contacting a protective film having no adhesiveness to the brittle material substrate. The protective film is arranged by sticking a part to the blank area of the adhesive film, the supporting means for supporting the brittle material substrate from below, the other main surface corresponding to the formation position of the scribe line An upper blade that can be brought into contact with the scheduled cutting position on the side, and the upper blade is brought into contact with the scheduled cutting position on the other main surface corresponding to the formation position of the scribe line Cutting apparatus of the brittle material substrate, characterized in that it comprises means for lowering while still so that the.
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Publication number Priority date Publication date Assignee Title
KR20230057429A (en) 2020-08-28 2023-04-28 미쓰보시 다이야몬도 고교 가부시키가이샤 Substrate parting detection device and substrate parting detection method

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