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JPH01115129A - Manufacture of optical element - Google Patents

Manufacture of optical element

Info

Publication number
JPH01115129A
JPH01115129A JP62272835A JP27283587A JPH01115129A JP H01115129 A JPH01115129 A JP H01115129A JP 62272835 A JP62272835 A JP 62272835A JP 27283587 A JP27283587 A JP 27283587A JP H01115129 A JPH01115129 A JP H01115129A
Authority
JP
Japan
Prior art keywords
epoxy resin
mixed liquid
optical element
chip
group
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP62272835A
Other languages
Japanese (ja)
Other versions
JPH0524675B2 (en
Inventor
Shoji Usuda
臼田 昭司
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idec Corp
Original Assignee
Idec Izumi Corp
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 Idec Izumi Corp filed Critical Idec Izumi Corp
Priority to JP62272835A priority Critical patent/JPH01115129A/en
Publication of JPH01115129A publication Critical patent/JPH01115129A/en
Publication of JPH0524675B2 publication Critical patent/JPH0524675B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item

Landscapes

  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)

Abstract

PURPOSE:To improve a function such as weather resistance by adding a sol solution, which mainly comprises ethyl silicate and in which an organic solvent is added to ethyl silicate, to an epoxy resin, covering the periphery of a chip in an optical element with the mixed liquid and conducting condensation cure even through heat treatment. CONSTITUTION:A sol solution mainly comprising ethyl silicate and composed of organic high molecules is added to an epoxy resin and a mixed liquid is prepared, and the mixed liquid is admitted into a casting case 1 and an optical element 4 is introduced into the mixed fluid. The mixed liquid is thermoset through heat treatment. A -COOH group as the active group of the epoxy resin and a -OH group as the reaction group of sol glass generates ester linkage in the process of the condensation of thermosetting and the active group is coupled stably at that time, thus remarkably improving the so-called weather resistance such as water resistance, heat resistance, etc. Consequently, the discoloration of a sealing medium and cracks are not generated during usage for a prolonged term, particularly, even usage for the prolonged term under solar direct sunlight at a high temperature, and the chip 4 is not deteriorated by the absorption of moisture. That is, the optical element having excellent weather resistance is acquired.

Description

【発明の詳細な説明】 (a)産業上の利用分野 この発明はLED等の光学素子の製造方法に関し、特に
チップの対土方法の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a method for manufacturing optical elements such as LEDs, and particularly to an improvement in the method for attaching chips to soil.

(bl従来の技術 LEDなどの光学素子においては、チップ表面を覆う封
止材として従来はもっばら透光性樹脂(クリアエポキシ
樹脂等)が使用されていた。製法はたとえば砲弾型のキ
ャスティングケースにクリアエポキシ樹脂を流し込んで
おき、この中にLEDチップがダイポンディングされ更
に金線がワイヤボンディングされたリードフレームを挿
入し、熱硬化さセた後キャスティングケースより引っ張
りだすことによりチップ周囲をエポキシ樹脂で封止した
り、またはTo−18型ステム電極にLEDチップをグ
イポンディングし、さらにワイヤボンディング処理した
後クリアエポキシ樹脂をステム電極上にポンティングし
て熱硬化することによってチップ周囲を封止するように
していた。
(bl Conventional Technology) In optical elements such as LEDs, translucent resins (clear epoxy resin, etc.) have traditionally been used as the sealing material to cover the chip surface. Pour clear epoxy resin, insert the lead frame into which the LED chip is die-bonded and the gold wire wire-bonded, and after thermosetting, pull it out of the casting case to surround the chip with epoxy resin. After sealing or bonding the LED chip to the To-18 type stem electrode and further wire bonding, clear epoxy resin is poured onto the stem electrode and cured by heat to seal the area around the chip. That's what I was doing.

(C1発明が解決しようとする問題点 しかしながら一般に樹脂材は耐候性の点で問題がある。(Problems that the C1 invention attempts to solve However, resin materials generally have problems in terms of weather resistance.

特にエポキシ樹脂は紫外線に弱(透明であるものが変色
したり、クラックが発生したり、また長時間の使用中に
水分を吸収しチップ自身に悪影響を及ぼしたり、更にチ
ップの熱膨張係数が樹脂の熱膨張係数と大きく異なって
いるために、加熱処理して樹脂を硬化させるときにチッ
プに過・大な応力が加わりチップの劣化やワイヤの断線
などを引き起こす問題があった。
In particular, epoxy resins are sensitive to ultraviolet light (transparent ones may discolor, cracks may occur, they may absorb moisture during long-term use and adversely affect the chips themselves, and the coefficient of thermal expansion of the chips may be lower than that of the resin). Because the coefficient of thermal expansion is significantly different from the coefficient of thermal expansion of the resin, excessive stress is applied to the chip when the resin is cured by heat treatment, causing problems such as chip deterioration and wire breakage.

この発明の目的は、上記の問題を一掃するためにゾルガ
ラスを加えて耐候性などの機能をアップさせたエポキシ
樹脂を用いて光学素子を製造する方法を提供することに
ある。
An object of the present invention is to provide a method for manufacturing an optical element using an epoxy resin to which sol glass is added to improve functions such as weather resistance, in order to eliminate the above-mentioned problems.

(d)問題点を解決するための手段 この発明は、エチルシリケートを主成分としてこれに有
機溶媒を加えたゾル溶液をエポキシ樹脂に加え、この混
合液体で光学素子のチップ周囲を被い、ついで加熱処理
を行って縮合硬化させることを特徴とする。
(d) Means for Solving Problems This invention involves adding a sol solution containing ethyl silicate as a main component and adding an organic solvent to the epoxy resin, covering the periphery of the optical element chip with this mixed liquid, and then It is characterized by condensation hardening by heat treatment.

CG1作用 この発明においては、たとえば上述のキャスティングケ
ースを使用する場合、エチルシリケートを主成分とした
′f機高分子のゾル溶液(以下ゾルガラスという)をエ
ポキシ樹脂に加え混合液体として、これをキャスティン
グケース内に入れてから光学素子をその混合液体内に入
れる。次に加熱処理を行って混合液体を熱硬化する。こ
の場合は、エポキシ樹脂の活性基である一COOH基と
ゾルガラスの反応基である一0Hiが熱硬化の縮合の過
程でエステル結合を引き起こし活性基が安定結合するこ
とにより耐水性、耐熱性などのいわゆる耐候性か著しく
向上する要因を作る。
CG1 Effect In this invention, for example, when using the above-mentioned casting case, a sol solution of a functional polymer mainly composed of ethyl silicate (hereinafter referred to as sol glass) is added to the epoxy resin to form a mixed liquid, and this is added to the casting case. and then place the optical element into the mixed liquid. Next, heat treatment is performed to thermally harden the mixed liquid. In this case, the -COOH group, which is the active group of the epoxy resin, and the -0Hi, which is the reactive group of the sol glass, form an ester bond during the condensation process during thermosetting, and the active groups form a stable bond, resulting in improved water resistance, heat resistance, etc. Create factors that significantly improve so-called weather resistance.

なお、ゾルガラスとエポキシ樹脂の混合割合はエポキシ
樹脂の種類により最適条件を選択するが、ゾルガラス:
エポキシ樹脂−100以内:100(重量比)の範囲内
で決められる。このゾルガラスとエポキシ樹脂の混合液
体は粘度が400〜500cps程度の粘性液体である
ため従来のエポキシ樹脂などと同様に扱うことが出来る
。そして加熱処理を行った後においては縮合硬化するた
めに、樹脂を使う上において問題となった耐候性が著し
く改善される。To−18タイプのLEDを製造する場
合も従来の樹脂を扱う場合と同じような作業となる。す
なわちゾルガラスを加えたエポキシ樹脂の混合液体をT
o−18ヘツダ上にボッティングし、次いで加熱処理を
行って硬化させる。
The optimum mixing ratio of sol glass and epoxy resin is selected depending on the type of epoxy resin, but sol glass:
Epoxy resin - within 100: determined within the range of 100 (weight ratio). This liquid mixture of sol glass and epoxy resin is a viscous liquid with a viscosity of about 400 to 500 cps, so it can be handled in the same way as conventional epoxy resins. Since the resin is condensed and cured after heat treatment, the weather resistance, which has been a problem when using resins, is significantly improved. When manufacturing To-18 type LEDs, the work is similar to that when handling conventional resins. In other words, the mixed liquid of epoxy resin with sol glass added is T.
Botted onto an O-18 header and then heat treated to harden.

(f)実施例 実施例として、砲弾型のLED素子の製造方法について
説明する。
(f) Example As an example, a method for manufacturing a bullet-shaped LED element will be described.

ゾル化したエチルシリケートとしては、アルカリを全く
含まないケイ成上ツマ−を使用し、を機高分子からなる
溶媒を加える。溶媒としてはたとえばエタノールやイソ
プロピルアルコールなどの混合物が使用される。このゾ
ルガラスは100’C〜200°C程度の極めて低い温
度で縮合硬化してガラス化(ゲル化)する。あらかじめ
ゾルガラスとしてこのようにして低温度で硬化するよう
にエチルシリケートを調整すると、エポキシ樹脂との混
合液体において加熱処理時にチップに悪影習を及ぼすこ
とがない。
As the solized ethyl silicate, a silicone resin containing no alkali is used, and a solvent consisting of a polymer is added thereto. For example, a mixture of ethanol, isopropyl alcohol, etc. is used as the solvent. This sol glass is condensed and hardened at extremely low temperatures of about 100'C to 200C to vitrify (gel). If ethyl silicate is prepared in advance as a sol glass so that it cures at a low temperature, it will not have any adverse effects on the chip during heat treatment in a mixed liquid with an epoxy resin.

第1図は上記のゾルガラスをエポキシ樹脂に加え混合液
体として、これを使用して砲弾型のLED素子を製造す
る方法を説明するための図である。1は有機材料からな
るキャスティングケースであり、この中にゾル化した上
記混合液体2を注入する。一方フープ状に成形したリー
ドフレーム3にチップ4をグイボンディングし、更にワ
イヤ5をボンディングしたチップ部を別に形成してお(
ゆそしてこのチップ部を上記溶液2内に挿入しく第1図
に示す状態)、この状態で1006C〜200°C程度
で数時間加熱する。すると混合液体が熱硬化して完全に
固化する。なお封止材にゾルガラスを加えないエポキシ
樹脂のみを使用する場合には、有機物のキャスティング
ケースとエポキシ樹脂の濡れ性が良いためにキャスティ
ングケース1の内側に予め離形剤を塗布し、さらに相当
大きな引抜きの力で引っ張る必要があったが、ゾルガラ
スは有機材料との濡れ性がよくないためゾルガラスとエ
ポキシ樹脂との混合液体どした場合はエポキシ樹脂のみ
の場合に比し加熱処理後キャステインク防−ス1から比
較的容易に引き出すことができる。
FIG. 1 is a diagram for explaining a method of manufacturing a bullet-shaped LED element by adding the above-mentioned sol glass to an epoxy resin to form a mixed liquid. Reference numeral 1 denotes a casting case made of an organic material, into which the sol-formed mixed liquid 2 is poured. On the other hand, a chip 4 is bonded to a hoop-shaped lead frame 3, and a chip part to which a wire 5 is bonded is formed separately (
Then, insert the tip into the solution 2 (in the state shown in FIG. 1) and heat it at about 1006C to 200C for several hours in this state. The mixed liquid is then thermally cured and completely solidified. In addition, when using only epoxy resin without adding sol glass as a sealing material, since the organic material has good wettability between the casting case and the epoxy resin, apply a mold release agent to the inside of the casting case 1 in advance, and use a considerably large mold. It was necessary to pull it out with a pulling force, but since sol glass does not have good wettability with organic materials, when a mixed liquid of sol glass and epoxy resin is used, the cast ink resistance after heat treatment is lower than when using only epoxy resin. It can be pulled out from the base 1 relatively easily.

本実施例で機能アップ材として使用するゾルガラスを熱
硬化させて得たゲルガラスは、熱膨張係数が5X10−
’ (1/’C)と、LEDチップ素材であるG、A、
の熱膨張ケース(6,8×1O−6(110C)に近い
ため、エポキシ樹脂との混合液体とすることにより熱硬
化時の膨張係数の差によるLEDチップに与える応力歪
みの影響が工ボキシ樹脂のみを使用する場合に比べ小さ
く、チップに及ぼすストレスを緩和することができる。
The gel glass obtained by thermosetting the sol glass used as the function-enhancing material in this example has a coefficient of thermal expansion of 5X10-
'(1/'C), G, A, which is the LED chip material,
Since the thermal expansion case (6,8 x 1O-6 (110C) is close to that of It is smaller than when using only the chip, and the stress on the chip can be alleviated.

第2図はTo−18型のLED素子を示している。この
LED素子の製造も、エポキシ樹脂を使用する場合と同
様に、図外のデイスペンサに上記ゾルガラスとエポキシ
樹脂との混合液体を用意し、LEDチップとワイヤのボ
ンディングされたヘッダ6の上に上記デイスペンサによ
って適当量をボッティングする。そして100〜200
’C程度で数時間はど加熱して硬化する。
FIG. 2 shows a To-18 type LED element. Similarly to the case of using epoxy resin, this LED element is manufactured by preparing a mixed liquid of the sol glass and epoxy resin in a dispenser (not shown), and placing the dispenser on the header 6 where the LED chip and wire are bonded. Bot the appropriate amount. and 100-200
It is cured by heating for several hours at around 'C.

上記のようにM単な工程によってLEDチップの封止を
行うことができ、しかも封止剤としては耐候性に非常に
優れた、ゾルガラスとエポキシ樹脂の混合液体を使用す
るために直射日光のもとでも長期間の使用が可能になる
As mentioned above, LED chips can be sealed in a simple process, and since the sealant is a mixed liquid of sol glass and epoxy resin, which has excellent weather resistance, it can be exposed to direct sunlight. However, it can be used for a long time.

なお本発明はLED素子の他ホトダイオードなどの受光
素子にも勿論適用することができる。
Note that the present invention can of course be applied to light receiving elements such as photodiodes in addition to LED elements.

(g1発明の効果 以上のようにこの発明によれば、常温でエチルシリケー
トを主成分としたゾルガラスとエポキシ樹脂の混合粘性
液体を使用するために作業性が非常に良い。また、この
混合液体は100°C〜2oo’c程度の熱処理で硬化
させることができる。このように比較的低温で硬化でき
るのでチップへの悪影響を防ぐことができ、品質を悪化
させない。また、ゾルガラスはもともと有機材料との漏
れ性がよくないために、本発明のようにエポキシ樹脂と
の混合液体を有機材料からなるキャスティングケースに
入れて封止材の成形を行う場合には、エポキシ樹脂のみ
を使用する場合に比べて成形部をキャスティングケース
から容易に引き出すことができる。加熱処理後−旦固化
すれば、封止材料が機能アンプするために従来のような
樹脂で生じた耐候性が悪いといった問題を大きく改善で
きる。すなわち長期の使用中に、特に高温で且つ太陽直
射光のもとて長期間使用しても封止材の変色やクランク
発生を生じることがなく、また水分を吸収してチップ劣
化を引き起こすこともない。すなわち耐候性に優れたも
のとなる。このため太陽直射光のもとで直接使用するこ
とができ封止材を樹脂で形成した光学素子を室外使用す
る場合に必要であったカーボネート板などを設ける必要
がな(なるなど、発行装置全体を低コストで簡単な構成
にすることができる。
(g1 Effects of the Invention As described above, according to the present invention, workability is very good because a mixed viscous liquid of sol glass and epoxy resin mainly composed of ethyl silicate is used at room temperature. It can be cured by heat treatment at about 100°C to 200°C. In this way, it can be cured at a relatively low temperature, so it can prevent adverse effects on the chip and do not deteriorate its quality. In addition, sol glass is originally an organic material. Due to poor leakage properties, when molding a sealant by placing a mixed liquid with epoxy resin in a casting case made of organic material as in the present invention, it is difficult to mold the sealing material compared to when using only epoxy resin. The molded part can be easily pulled out from the casting case.Once solidified after heat treatment, the sealing material increases its functionality, which greatly improves the problem of poor weather resistance caused by conventional resins. In other words, during long-term use, especially at high temperatures and under direct sunlight, the encapsulant will not discolor or crack, and will not absorb moisture and cause chip deterioration. In other words, it has excellent weather resistance.For this reason, it can be used directly under direct sunlight, and a carbonate plate, which was necessary when using an optical element whose sealing material is made of resin, is used outdoors. Since there is no need to provide the above, the entire issuing device can be constructed at a low cost and with a simple structure.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図、第2図は本発明によってLED素子を製造する
方法について説明するための図である。
FIGS. 1 and 2 are diagrams for explaining a method of manufacturing an LED element according to the present invention.

Claims (1)

【特許請求の範囲】[Claims] (1)エチルシリケートを主成分として、これに有機溶
媒を加えたゾル溶液をエポキシ樹脂に加え、この混合液
体で光学素子のチップ周囲を被い、ついで加熱処理を行
って縮合硬化させることを特徴とする光学素子の製造方
法。
(1) A sol solution containing ethyl silicate as the main component and an organic solvent added thereto is added to the epoxy resin, the mixed liquid is coated around the chip of the optical element, and then heat treatment is performed to condensate and harden it. A method for manufacturing an optical element.
JP62272835A 1987-10-28 1987-10-28 Manufacture of optical element Granted JPH01115129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62272835A JPH01115129A (en) 1987-10-28 1987-10-28 Manufacture of optical element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62272835A JPH01115129A (en) 1987-10-28 1987-10-28 Manufacture of optical element

Publications (2)

Publication Number Publication Date
JPH01115129A true JPH01115129A (en) 1989-05-08
JPH0524675B2 JPH0524675B2 (en) 1993-04-08

Family

ID=17519437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62272835A Granted JPH01115129A (en) 1987-10-28 1987-10-28 Manufacture of optical element

Country Status (1)

Country Link
JP (1) JPH01115129A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008208380A (en) * 2008-05-26 2008-09-11 Nippon Electric Glass Co Ltd Luminescent color-converting member
JP2008255362A (en) * 2008-05-26 2008-10-23 Nippon Electric Glass Co Ltd Emitting color conversion member
DE102008005936A1 (en) * 2008-01-24 2009-07-30 Osram Opto Semiconductors Gmbh Optoelectronic arrangement
JP2015087218A (en) * 2013-10-30 2015-05-07 愛三工業株式会社 Liquid quantity detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008005936A1 (en) * 2008-01-24 2009-07-30 Osram Opto Semiconductors Gmbh Optoelectronic arrangement
JP2008208380A (en) * 2008-05-26 2008-09-11 Nippon Electric Glass Co Ltd Luminescent color-converting member
JP2008255362A (en) * 2008-05-26 2008-10-23 Nippon Electric Glass Co Ltd Emitting color conversion member
JP2015087218A (en) * 2013-10-30 2015-05-07 愛三工業株式会社 Liquid quantity detector

Also Published As

Publication number Publication date
JPH0524675B2 (en) 1993-04-08

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