JPH0391945A - Eprom with shutter - Google Patents

Eprom with shutter

Info

Publication number
JPH0391945A
JPH0391945A JP22881889A JP22881889A JPH0391945A JP H0391945 A JPH0391945 A JP H0391945A JP 22881889 A JP22881889 A JP 22881889A JP 22881889 A JP22881889 A JP 22881889A JP H0391945 A JPH0391945 A JP H0391945A
Authority
JP
Japan
Prior art keywords
shutter
data
chip
ultraviolet rays
programmed
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.)
Pending
Application number
JP22881889A
Other languages
Japanese (ja)
Inventor
Toshiaki Matsuno
松野　稔昭
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.)
NEC Engineering Ltd
Original Assignee
NEC Engineering Ltd
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 NEC Engineering Ltd filed Critical NEC Engineering Ltd
Priority to JP22881889A priority Critical patent/JPH0391945A/en
Publication of JPH0391945A publication Critical patent/JPH0391945A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To maintain data written in an IC chip or to make possible the erase of the data without adhering a light-shielding covering film on the opening part of an IC package by a method wherein an EPROM is provided with a freely openable and closable shutter, by which the opening part sisshut and the irradiation of ultraviolet rays on the IC chip is intercepted. CONSTITUTION:Data is written in an IC chip mounted in an IC package 1 and thereafter, a shutter 3 is shut and an opening part 2 is blocked. Whereupon, ultraviolet rays are not irradiated on the IC chip 4 and the data programmed in the chip 4 is maintained. On the other hand, in case the programmed data is erased and another data is inputted, a projecting piece 3a of the shutter is pushed to open the shutter 3 and ultraviolet rays are led in through the opening part 2. The chip 4 is irradiated with these led-in ultraviolet rays and the programmed data are all erased. Thereby, even if a light-shielding covering film is not adhered, the irradiation of ultraviolet rays is intercepted by simply shutting the shutter 3, data programmed in the chip 4 is protected and when the shutter 3 is opened, the data is easily erased.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明はＥＰＲＯＭに関し、特に遮光カバーフィルムを
貼り付けな〈ても、プログラムされたデータの内容を維
持できるシャッター付きＥＰＲＯＭに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an EPROM, and particularly to an EPROM with a shutter that can maintain programmed data contents even without pasting a light-shielding cover film.

［従来の技術］ 従来この種のＥＰＲＯＭは、ＩＣパッケージ上面の開口
部に遮光カバーフィルムを貼り付ける事により．ＩＣチ
ップへの紫外線の照射を避けプログラムされたデータを
マスクする方法を採っていた。[Prior Art] Conventionally, this type of EPROM is manufactured by attaching a light-shielding cover film to the opening on the top surface of the IC package. A method was used to mask the programmed data by avoiding irradiation of the IC chip with ultraviolet rays.

［発明が解決しようとする課題］ しかしながら、上述した従来のＥＰＲＯＭは、紫外線の
遮断のため、別に遮光用カバーフィルムを貼り付ける方
法を採っているので、何回もプログラムされたデータを
消夫し書込む場合、遮光用カバーフィルムの付け外し作
業の手間と費用がかかるという欠点がある。[Problems to be Solved by the Invention] However, the conventional EPROM described above uses a method of pasting a separate light-shielding cover film to block ultraviolet rays, so data that has been programmed many times is erased. When writing, there is a drawback that it takes time and money to attach and remove the light-shielding cover film.

本発明は上記従来の課題に鑑みてなされたもので、ＩＣ
パッケージの開口部に遮光用カバーフィルムを貼り付け
ることな＜ＩＣチップに書込まれたデータを維持し、ま
た消去も可能とするシャッター付きＥＰＲＯＭを提供す
ることを目的としている． ［課題を解決するための手段］ 本発明のシャッター付きＥＰＲＯＭは、ＩＣパッケージ
の上面に開口部を設けてＩＣチップを露出させてなるＥ
ＰＲＯＭにおいて，上記開口部を閉鎖してＩＣチップへ
の紫外線の照射を遮断する開閉自在のシャッターを備え
てなるものである。The present invention has been made in view of the above-mentioned conventional problems, and
The purpose of this invention is to provide an EPROM with a shutter that allows data written on an IC chip to be maintained and erased without the need to attach a light-shielding cover film to the opening of the package. [Means for Solving the Problems] The shutter-equipped EPROM of the present invention is an EPROM having an opening on the top surface of an IC package to expose an IC chip.
The PROM is equipped with an openable and closable shutter that closes the opening and blocks ultraviolet rays from irradiating the IC chip.

［実施例１ 次に本発明について図面を参照して説明する．第１図及
び第２図は本発明の一実施例を示す外観斜視図で，それ
ぞれ第１図はシャッターを閉じた状態、第２図はシャー
７ターを開いた状態を示す図である． Ｌ記各図において本発明は、ＩＣパッケージｌのＬ面に
形成した開口部２に開閉自在のシャッター３を設けてな
るものである。[Example 1] Next, the present invention will be explained with reference to the drawings. 1 and 2 are external perspective views showing one embodiment of the present invention, with FIG. 1 showing the shutter closed and FIG. 2 showing the shutter open. In each of the drawings, the present invention is provided with a shutter 3 that can be opened and closed in an opening 2 formed on the L side of an IC package 1.

上記開口部２の内側にはＩＣチップ４が位置し、開口部
２から照射する紫外線を受けてＩＣチップ４にプログラ
ムされたデータは消去され、また新たな書込みが可能と
なる． 開口部２の両側には、ガイド２ａ，２ａが設けられ、シ
ャッター３はこのガイド２ａ，２ａに両端を摺動［１在
に支持される。また開口部２の一側部は段付きに形成し
てあり、開口蒔のシャッター３の収納部となっている。An IC chip 4 is located inside the opening 2, and data programmed in the IC chip 4 is erased by receiving ultraviolet rays irradiated from the opening 2, and new writing becomes possible. Guides 2a, 2a are provided on both sides of the opening 2, and the shutter 3 is slidably supported at both ends by the guides 2a, 2a. Further, one side of the opening 2 is stepped and serves as a storage area for the shutter 3 of the opening.

−１二記シャッター３は略方形状をなす薄板であり、閉
釦侍には完全に開口部２を覆い、ＩＣチップ４への紫外
線の照射を遮断する。シャッター３の上面には突片３ａ
が設けられ、シャッター３の開閉動作を容易ならしめて
いる。-12 The shutter 3 is a thin plate having a substantially rectangular shape, and completely covers the opening 2 when closing the button, thereby blocking irradiation of the IC chip 4 with ultraviolet rays. The top surface of the shutter 3 has a protruding piece 3a.
is provided to facilitate the opening and closing operations of the shutter 3.

上記構成において本発明シャッター付きＥＰＲＯＭは、
以下のように使用される．すなわちＩＣパッケージ１内
に搭載されたＩＣチップにデータを出込んだ後は、シャ
ッター３を閉じて開口部２を塞いでおく．するとＩＣチ
ップ４には紫外線が照射されず、ＩＣチップ４にプログ
ラムされたデータは維持される。In the above configuration, the shuttered EPROM of the present invention has the following characteristics:
It is used as follows. That is, after data is transferred to and from the IC chip mounted in the IC package 1, the shutter 3 is closed to block the opening 2. Then, the IC chip 4 is not irradiated with ultraviolet rays, and the data programmed in the IC chip 4 is maintained.

一方、プログラムされたデータを消去して，別のデータ
を入力する場合は、シャッター３をその突片３ａを押し
て開き、開口部２から紫外線を取り込む。ＩＣチップ４
は、この取り込まれた紫外線を受け，プログラムされた
データはすべて消去される。データの消去が終了した後
は新たなデータを，Ｓ込み、シャッター３を閉じておけ
ばよい。On the other hand, when erasing programmed data and inputting other data, the shutter 3 is opened by pushing its protrusion 3a, and ultraviolet rays are taken in through the opening 2. IC chip 4
receives this captured ultraviolet light, and all programmed data is erased. After erasing the data, it is sufficient to input new data and close the shutter 3.

［発明の効果］ 以上説明したように本発明はＥＰＲＯＭの開口部にＩＣ
チップへの紫外線を遮断する開閉自在のシャッターを設
けたことにより、遮光用カバーフィルムを貼り付けな〈
てもシャッターを閉じるだけで紫外線の照射を遮断して
ＩＣチップにプログラムされたデータを保護でき、また
シャッターを開ければＩＣチップにプログラムされたデ
ータを簡単に消去でき、従来遮光用カバーフィルムの貼
り付け、剥離により行なっていた作業を簡略化できる効
果がある。[Effects of the Invention] As explained above, the present invention has an IC in the opening of the EPROM.
By installing a shutter that can be opened and closed to block ultraviolet rays to the chip, there is no need to apply a light-shielding cover film.
By simply closing the shutter, you can protect the data programmed into the IC chip by blocking ultraviolet rays, and by opening the shutter, you can easily erase the data programmed into the IC chip. It has the effect of simplifying the work that was previously done by attaching and peeling.

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

第１図及び第２図は本発明の一実施例を示す外観斜視図
で、それぞれ第１図はシャッターを閉じた状態、第２図
はシャッターを開いた状態を示す図である． １：ＩＣパッケージ　　２：［ｌＨ口部２ａ：ガイド　
　　　　３：シャッター４：ＩＣチップFIGS. 1 and 2 are external perspective views showing one embodiment of the present invention, with FIG. 1 showing the shutter in a closed state and FIG. 2 showing the shutter in an open state, respectively. 1: IC package 2: [lH opening 2a: Guide
3: Shutter 4: IC chip

Claims (1)

【特許請求の範囲】[Claims] ＩＣパッケージの上面に開口部を設けてＩＣチップを露
出させてなるＥＰＲＯＭにおいて、上記開口部を閉鎖し
てＩＣチップへの紫外線の照射を遮断する開閉自在のシ
ャッターを備えたことを特徴とするシャッター付きＥＰ
ＲＯＭ。An EPROM in which an opening is provided on the top surface of an IC package to expose an IC chip, characterized in that the shutter is equipped with a shutter that can be opened and closed to close the opening and block irradiation of ultraviolet rays to the IC chip. with EP
ROM.
JP22881889A 1989-09-04 1989-09-04 Eprom with shutter Pending JPH0391945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22881889A JPH0391945A (en) 1989-09-04 1989-09-04 Eprom with shutter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22881889A JPH0391945A (en) 1989-09-04 1989-09-04 Eprom with shutter

Publications (1)

Publication Number Publication Date
JPH0391945A true JPH0391945A (en) 1991-04-17

Family

ID=16882342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22881889A Pending JPH0391945A (en) 1989-09-04 1989-09-04 Eprom with shutter

Country Status (1)

Country Link
JP (1) JPH0391945A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300808A (en) * 1992-05-04 1994-04-05 Motorola, Inc. EPROM package and method of optically erasing
US6547955B1 (en) 1998-12-04 2003-04-15 Denso Corporation Gas concentration measuring apparatus designed to minimize error component contained in output

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5300808A (en) * 1992-05-04 1994-04-05 Motorola, Inc. EPROM package and method of optically erasing
US6547955B1 (en) 1998-12-04 2003-04-15 Denso Corporation Gas concentration measuring apparatus designed to minimize error component contained in output
US6849174B2 (en) 1998-12-04 2005-02-01 Denso Corporation Gas concentration measuring apparatus designed to minimize error component contained in output

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