JP2520030Y2 - LED display - Google Patents
LED displayInfo
- Publication number
- JP2520030Y2 JP2520030Y2 JP1991026594U JP2659491U JP2520030Y2 JP 2520030 Y2 JP2520030 Y2 JP 2520030Y2 JP 1991026594 U JP1991026594 U JP 1991026594U JP 2659491 U JP2659491 U JP 2659491U JP 2520030 Y2 JP2520030 Y2 JP 2520030Y2
- Authority
- JP
- Japan
- Prior art keywords
- opening
- envelope
- led
- led display
- resin
- 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.)
- Expired - Fee Related
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、電光表示板等に用いら
れ、複数のＬＥＤチップが搭載されたプリント基板の表
面に外囲器を重ねた外囲器使用型のＬＥＤ表示器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED display device for use in an envelope, which is used for an electronic display board or the like, and in which an envelope is stacked on the surface of a printed board on which a plurality of LED chips are mounted.
【０００２】[0002]
【従来の技術】電光表示板に用いられるＬＥＤ表示器と
して、外囲器を使用したものがある。従来の外囲器を使
用したＬＥＤ表示器を図８〜図１０に示す。いずれのＬ
ＥＤ表示器も、表面に多数のＬＥＤチップ３１がマトリ
ックス状に配列されたプリント基板３２と、その表面に
重合された板状の外囲器３３とを具備している。外囲器
３３は、白色樹脂、黒色樹脂等の遮光性樹脂からなり、
プリント基板３２上の多数のＬＥＤチップ３１に対応す
る部分が円形に開口されている。そして、外囲器３３の
各開口部３４を封止するために、図８のＬＥＤ表示器で
は、粘着性の拡散シート３５が外囲器３３の表面全体に
貼り付けられている。また、図９および図１０のＬＥＤ
表示器では、各開口部３４に熱可塑性の透光性樹脂３６
が充填されており、図１０のＬＥＤ表示器における透光
性樹脂３６は、凹レンズになっている。2. Description of the Related Art As an LED display used for a light-emitting display board, there is one using an envelope. An LED display using a conventional envelope is shown in FIGS. Which L
The ED display also includes a printed circuit board 32 on the surface of which a large number of LED chips 31 are arranged in a matrix, and a plate-shaped envelope 33 superposed on the surface thereof. The envelope 33 is made of a light-shielding resin such as white resin or black resin,
Portions of the printed circuit board 32 corresponding to the many LED chips 31 are circularly opened. Then, in order to seal each opening 34 of the envelope 33, in the LED display of FIG. 8, an adhesive diffusion sheet 35 is attached to the entire surface of the envelope 33. In addition, the LED of FIG. 9 and FIG.
In the display, thermoplastic translucent resin 36 is provided in each opening 34.
Is filled, and the translucent resin 36 in the LED display of FIG. 10 is a concave lens.
【０００３】[0003]
【考案が解決しようとする課題】このような従来の外囲
器３３を使用したＬＥＤ表示器において、外囲器３３の
表面に拡散シート３５を貼り付ける場合は、拡散シート
３５の外囲器３３の外形に対する貼り付け精度が厳し
く、貼り付けに手数がかかる。特に、ドットマトリック
スＬＥＤのように、多数個のＬＥＤ表示器を縦横に隙間
なく並べる場合、外囲器３３上の拡散シート３５が僅か
でも外囲器３３の外側にはみ出していると、隣接するＬ
ＥＤ表示器の外囲器３３により拡散シート３５が押され
て剥離するという問題が生じた。In the LED display using the conventional envelope 33, when the diffusion sheet 35 is attached to the surface of the envelope 33, the envelope 33 of the diffusion sheet 35 is used. The accuracy of sticking to the outer shape of the is strict, and it takes time to stick. In particular, when a large number of LED indicators are arranged vertically and horizontally without a gap like a dot matrix LED, if the diffusion sheet 35 on the envelope 33 is slightly outside the envelope 33, the adjacent L
There was a problem that the diffusion sheet 35 was pushed and peeled off by the envelope 33 of the ED display.
【０００４】外囲器３３の各開口部３４に透光性樹脂３
６を充填する場合は、外囲器３３の表面への樹脂漏れを
防ぐために、その表面にマスキングテープを貼り付け、
外囲器３３の表面を下にして樹脂充填を行うのが一般的
であるが、拡散シート３５を貼り付ける場合よりも更に
工数が増加するのを避け得ず、樹脂充填時に樹脂中に巻
き込んだ気泡を除去するため、充填後には真空脱気も必
要とした。外囲器３３の表面にマスキングテープを貼り
付けるにもかかわらず、マスキングテープの貼り付け状
態および材質、外囲器３３の仕上がり状態および材質、
透光性樹脂３６の材質等によっては、外囲器３３の表面
に樹脂が漏れ出す場合があった。The transparent resin 3 is provided in each opening 34 of the envelope 33.
6 is filled with a masking tape on the surface of the envelope 33 in order to prevent resin leakage to the surface,
It is general to perform resin filling with the surface of the envelope 33 facing down, but it is unavoidable that the number of steps is further increased than when the diffusion sheet 35 is attached, and the resin is caught in the resin at the time of resin filling. Vacuum degassing was also required after filling to remove air bubbles. Although the masking tape is attached to the surface of the envelope 33, the attached state and material of the masking tape, the finished state and material of the envelope 33,
The resin may leak to the surface of the envelope 33 depending on the material of the translucent resin 36.
【０００５】また、外囲器３３の開口部を封止する手段
が貼り付けシートであれ充填樹脂であれ、それらに、放
射輝度、出射角度の制御に有効な寸法精度の高いレンズ
を形成することは困難であった。Further, whether the means for sealing the opening of the envelope 33 is a sticking sheet or a filling resin, a lens having high dimensional accuracy effective for controlling radiance and emission angle is formed on them. Was difficult.
【０００６】本考案はかかる事情に鑑みて創案されたも
のであり、外囲器にその開口部封止体を一体的に設ける
ことにより開口部封止に要する工数が省略でき、しか
も、その開口部封止体の寸法精度が高く、且つ、開口部
封止体にレンズ機能を持たせることが容易なＬＥＤ表示
器を提供することを目的とする。The present invention was devised in view of such circumstances, and by integrally providing the opening sealing member in the envelope, the number of steps required for sealing the opening can be omitted, and the opening can be reduced. An object of the present invention is to provide an LED display device in which the dimensional accuracy of the partial sealing body is high and the opening sealing body can easily have a lens function.
【０００７】本考案に係るＬＥＤ表示器は、表面に複数
のＬＥＤチップがマトリクス状に配列されたプリント基
板と、前記ＬＥＤチップを覆う外囲器とからなり、前記
外囲器は、前記ＬＥＤチップに対応する各部分が開口さ
れた開口部を備え、該開口部にて前記ＬＥＤチップをそ
れぞれ取り囲む遮光性樹脂からなる外囲器本体と、前記
開口部を覆うように複数の透光部が設けられた透光性樹
脂からなる開口部封止体とが一体に形成されており、前
記開口部封止体の透孔部は、連結部によって相互に連結
されており、当該連結部は前記遮光性樹脂によってその
表面が覆われている。 The LED display according to the present invention has a plurality of LED displays on the surface.
LED chips are printed on a matrix
A plate and an envelope covering the LED chip,
The envelope is open at each part corresponding to the LED chip.
And the LED chip is aligned with the opening.
An envelope body made of a light-shielding resin that surrounds each,
Translucent tree with multiple translucent parts so as to cover the opening
The opening sealing body made of grease is integrally formed,
The through holes of the opening sealing body are connected to each other by the connecting portion.
And the connecting portion is made of the light-shielding resin.
The surface is covered.
【０００８】[0008]
【実施例】以下、図面を参照して本考案の実施例を説明
する。図１は本考案の一実施例を示すＬＥＤ表示器の縦
断面図、図２は拡大縦断面図、図３は平面図、図４およ
び図５は外囲器の成形法の説明図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view of an LED display showing an embodiment of the present invention, FIG. 2 is an enlarged vertical sectional view, FIG. 3 is a plan view, and FIGS. 4 and 5 are explanatory views of a method of forming an envelope. .
【０００９】ここに示されたＬＥＤ表示器は、表面に複
数のＬＥＤチップ１１がマトリクス状に配列されたプリ
ント基板１０と、前記ＬＥＤチップ１１を覆う外囲器２
０とを有している。前記外囲器２０は、ＬＥＤチップ１
１に対応する部分がそれぞれ開口された開口部２２を備
え、該開口部２２にて前記ＬＥＤチップ１１をそれぞれ
取り囲む白色樹脂、黒色樹脂等の遮光性樹脂からなる外
囲器本体２１と、前記開口部２２を覆うように複数の透
光部２６が設けられた透光性樹脂からなる開口部封止体
２５とが一体に形成されており、前記開口部封止体２５
の透孔部２６は、連結部２７によって相互に連結されて
おり、当該連結部２７は前記遮光性樹脂によってその表
面が覆われている。この外囲器２０は、次のような方法
で形成される。 The LED display shown here has a dual display.
A number of LED chips 11 arranged in a matrix
The package 2 that covers the LED substrate 11 and the substrate 10.
It has 0 and. The envelope 20 includes the LED chip 1
1 is provided with an opening 22 in which each part corresponding to 1 is opened.
The LED chips 11 are respectively inserted in the openings 22.
Surrounding white resin, black resin, etc.
A plurality of transparent bodies are provided so as to cover the enclosure body 21 and the opening 22.
Opening sealing body made of a translucent resin provided with a light section 26
25 is integrally formed with the opening sealing member 25.
The through holes 26 of the
And the connecting portion 27 is formed of the light-shielding resin.
The surface is covered. This envelope 20 has the following method.
Is formed by.
【００１０】まず、図４に示すように、透光性を有する
アクリル樹脂、ポリカーボネイト樹脂等の射出成形によ
り、開口部封止体２５を作成する。作成された開口部封
止体２５は、外囲器本体２１の各開口部２２に対応する
多数の透光部２６が、板状または棒状の連結部２７によ
り相互連結された構造になっている。連結部２７は、外
囲器本体２１を構成する遮光性樹脂で表面が覆われるよ
うに、その表面が透光部２６の表面より低くなってい
る。開口部封止体２５が成形されると、図５に示すよう
に、開口部封止体２５の裏面側に、黒色樹脂、白色樹脂
等の遮光性樹脂にて外囲器本体２１を成形する。このと
き、外囲器本体２１を構成する遮光性樹脂の一部が、開
口部封止体２３の透光部２６、２６間の空間及び連結部
２７の表面側に充填される。外囲器２０の成形法として
は、２色成形、インサート形成等を用いることができ
る。成形された外囲器２０は、プリント基板１０とは熱
かしめや、ビス止め等により固定される。 First, as shown in FIG. 4, it has translucency.
By injection molding of acrylic resin, polycarbonate resin, etc.
Then, the opening sealing body 25 is created. Created opening seal
The stopper 25 corresponds to each opening 22 of the envelope body 21.
The multiple light-transmitting portions 26 are connected by the plate-like or rod-like connecting portions 27.
The structure is interconnected. The connecting portion 27 is
The surface is covered with the light-shielding resin that constitutes the enclosure body 21.
The surface is lower than the surface of the translucent part 26.
It When the opening sealing body 25 is molded, as shown in FIG.
On the back surface side of the opening sealing body 25, a black resin, a white resin
The envelope body 21 is molded with a light-shielding resin such as. This and
A part of the light-shielding resin that constitutes the envelope body 21 is opened.
Space between the translucent parts 26 of the mouth part sealing body 23, and a connecting part
The surface side of 27 is filled. As a method of forming the envelope 20
Can use two-color molding, insert molding, etc.
It The molded envelope 20 does not heat the printed circuit board 10.
It is fixed by caulking or screwing.
【００１１】このような構造のＬＥＤ表示器において
は、プリント基板１０上のＬＥＤチップ１１が発光する
ことにより、その光が、開口部封止体２５の透光部２６
を通して外部へ出射される。開口部封止体２５を構成す
る透光性樹脂に拡散性を持たせることにより、透光部２
６を通して外部へ出射される光が均一化される。外囲器
２０の透光部２６以外の表面をシルクスクリーンによる
ベタ印刷で黒色等に塗装することも容易であり、そうす
ればＬＥＤ表示器のコントラストが更に向上する。外囲
器本体２１のの表層部に開口部封止体２５が一体化され
ているので、シートを貼り付けたり、各開口部に樹脂を
充填するというような複雑な手間を必要とせず、製造工
数が低減され、且つ、開口部封止体２５が剥離するおそ
れがない。更に、開口部封止体２５の外囲器本体２１に
対する位置精度が高く、開口部封止体２５それ自体の寸
法精度も高い。そのため、多数のＬＥＤ表示器を隙間な
く並べる場合も、開口部封止体２５の相互接触がない。 In the LED display having such a structure
Causes the LED chip 11 on the printed circuit board 10 to emit light.
As a result, the light is transmitted through the transparent portion 26 of the opening sealing body 25.
Is emitted to the outside through. Constituting the opening sealing body 25
By making the translucent resin that has a diffusive property,
The light emitted to the outside through 6 is made uniform. Envelope
The surface other than the transparent portion 26 of 20 is silk-screened
It is easy to apply solid printing to black, etc.
If so, the contrast of the LED display is further improved. Circumference
The opening sealing body 25 is integrated with the surface layer of the container body 21.
Sheet is attached, and resin is applied to each opening.
No need for complicated work such as filling,
The number is reduced, and the opening sealing body 25 is peeled off.
There is no. Further, in the enclosure body 21 of the opening sealing body 25,
The position accuracy with respect to the opening sealing body 25 itself is high.
The legal accuracy is also high. Therefore, many LED displays should be
Even when they are arranged closely, there is no mutual contact between the opening sealing bodies 25.
【００１２】図６および図７は本考案の他の実施例を示
すＬＥＤ表示器の拡大縦断面図である。図６のＬＥＤ表
示器では、開口部封止体２５の透光部２６が凸レンズと
され、その焦点位置にＬＥＤチップ１１を配すること
で、チップ正面方向の輝度をあげることができる。図７
のＬＥＤ表示器では、開口部封止体２５の透光部２６が
凹レンズとされ、ＬＥＤ表示器の視認角度を大きくする
ことができる。両ＬＥＤ表示器とも、開口部封止体２５
が外囲器本体２１と一体成形されているので、その透光
部２６をレンズ形状に形成することが容易であり、形成
されたレンズの寸法精度を高くすることができる。 6 and 7 show another embodiment of the present invention.
FIG. 3 is an enlarged vertical sectional view of the LED display device. 6 LED table
In the indicator, the transparent portion 26 of the opening sealing body 25 is a convex lens.
And place the LED chip 11 at the focal position
Thus, the brightness in the front direction of the chip can be increased. Figure 7
In the LED display of, the transparent portion 26 of the opening sealing body 25 is
Uses a concave lens to increase the viewing angle of the LED display
be able to. Both LED displays have an opening sealing body 25.
Since it is integrally molded with the envelope body 21,
It is easy to form the portion 26 into a lens shape, and
The dimensional accuracy of the formed lens can be increased.
【００１３】本考案に係るＬＥＤ表示器は、表面に複数
のＬＥＤチップがマトリクス状に配列されたプリント基
板と、前記ＬＥＤチップを覆う外囲器とからなり、前記
外囲器は、前記ＬＥＤチップに対応する各部分が開口さ
れた開口部を備え、該開口部にて前記ＬＥＤチップをそ
れぞれ取り囲む遮光性樹脂からなる外囲器本体と、前記
開口部を覆うように複数の透光部が設けられた透光性樹
脂からなる開口部封止体とが一体に形成されており、前
記開口部封止体の透光部は、連結部によって相互に連結
されており、当該連結部は前記遮光性樹脂によってその
表面が覆われている。このため、外囲器にシートを貼り
付けたり、その各開口部に樹脂を充填するというような
複雑な手間を必要とせず、製造工数が低減され、開口部
封止体の剥離のおそれもない。また、開口部封止体が外
囲器本体と一体成形されているので、外囲器本体の各開
口部に対応する透光部をレンズ形状にすることが容易で
あり、その寸法精度も高い。さらには、外囲器の透光部
以外の表面をシルクスクリーンによるベタ印刷で黒色等
に塗装することも容易で、これによりＬＥＤ表示器のコ
ントラストを更に向上させることが可能となる。また、
連結部も遮光性樹脂によってその表面が覆われているの
で、ＬＥＤチップの光が透光性樹脂からなる連結部に入
射しても外部に漏れることはないので、特に隣接する各
透光部の間が光学的に確実に分離され、視認性をより向
上させることができる。 The LED display according to the present invention has a plurality of LEDs on the surface.
LED chips are printed on a matrix
A plate and an envelope covering the LED chip,
The envelope is open at each part corresponding to the LED chip.
And the LED chip is aligned with the opening.
An envelope body made of a light-shielding resin that surrounds each,
Translucent tree with multiple translucent parts so as to cover the opening
The opening sealing body made of grease is integrally formed,
The transparent parts of the opening sealing body are connected to each other by the connecting part.
And the connecting portion is made of the light-shielding resin.
The surface is covered. For this reason, attach the sheet to the envelope.
Such as attaching or filling each opening with resin
No complicated labor is required, the number of manufacturing steps is reduced, and the opening
There is no risk of peeling of the sealing body. In addition, the opening sealing
Since it is molded integrally with the enclosure body, each opening of the enclosure body
It is easy to make the translucent part corresponding to the mouth part a lens shape.
Yes, its dimensional accuracy is high. Furthermore, the translucent part of the envelope
Surfaces other than black are solid printed by silk screen
It is also easy to paint on the LED display,
It is possible to further improve trust. Also,
The surface of the connecting part is also covered with a light-shielding resin.
The LED chip light enters the connecting part made of translucent resin.
Even if it is shot, it does not leak to the outside, so each adjacent
Optical separation is ensured between the translucent parts for better visibility.
Can be raised.
【図１】本考案の一実施例を示すＬＥＤ表示器の縦断面
図である。FIG. 1 is a vertical sectional view of an LED display according to an embodiment of the present invention.
【図２】図１のＬＥＤ表示器の拡大縦断面図である。FIG. 2 is an enlarged vertical sectional view of the LED display of FIG.
【図３】図１のＬＥＤ表示器の平面図である。FIG. 3 is a plan view of the LED display of FIG.
【図４】図１のＬＥＤ表示器に使用された外囲器の開口
部封止体の構造説明図で、（Ａ）は平面図、（Ｂ）は
（Ａ）のＡ−Ａ線矢示図、（Ｃ）は（Ａ）のＢ−Ｂ線矢
示図である。4A and 4B are structural explanatory views of the opening sealing body of the envelope used in the LED display of FIG. 1, in which FIG. 4A is a plan view and FIG. 4B is an arrow AA line in FIG. Drawing (C) is a BB line arrow figure of (A).
【図５】図１のＬＥＤ表示器に使用された外囲器の構造
説明図で、（Ａ）は平面図、（Ｂ）は（Ａ）のＣ−Ｃ線
矢示図、（Ｃ）は（Ａ）のＤ−Ｄ線矢示図である。5A and 5B are structural explanatory views of an envelope used for the LED display of FIG. 1, in which FIG. 5A is a plan view, FIG. 5B is a view taken along the line CC of FIG. It is a DD line arrow view figure of (A).
【図６】本考案の他の実施例を示すＬＥＤ表示器の拡大
縦断面図である。FIG. 6 is an enlarged vertical sectional view of an LED display according to another embodiment of the present invention.
【図７】本考案の更に他の実施例を示すＬＥＤ表示器の
一部拡大縦断面図である。FIG. 7 is a partially enlarged vertical sectional view of an LED display showing another embodiment of the present invention.
【図８】従来のＬＥＤ表示器の縦断面図である。FIG. 8 is a vertical sectional view of a conventional LED display.
【図９】従来のＬＥＤ表示器の縦断面図である。FIG. 9 is a vertical sectional view of a conventional LED display.
【図１０】従来のＬＥＤ表示器の縦断面図である。FIG. 10 is a vertical cross-sectional view of a conventional LED display.
１０ プリント基板 １１ ＬＥＤチップ ２０ 外囲器 ２１ 外囲器本体 ２２ 開口部 ２５ 開口部封止体 ２６ 透光部 10 Printed Circuit Board 11 LED Chip 20 Envelope 21 Enclosure Main Body 22 Opening 25 Opening Sealing Body 26 Light Transmissive Part
Claims (2)
状に配列されたプリント基板と、前記ＬＥＤチップを覆
う外囲器とからなり、前記外囲器は、前記ＬＥＤチップ
に対応する各部分が開口された開口部を備え、該開口部
にて前記ＬＥＤチップをそれぞれ取り囲む遮光性樹脂か
らなる外囲器本体と、前記開口部を覆うように複数の透
光部が設けられた透光性樹脂からなる開口部封止体とが
一体に形成されており、前記開口部封止体の透孔部は、
連結部によって相互に連結されており、当該連結部は前
記遮光性樹脂によってその表面が覆われていることを特
徴とするＬＥＤ表示器。1. A matrix of a plurality of LED chips on the surface.
Printed circuit boards arranged in a line and covering the LED chips
And the LED chip,
The opening corresponding to each part is opened, and the opening
Is it a light-shielding resin that surrounds the LED chips?
And a plurality of transparent bodies covering the opening.
The opening sealing body made of a translucent resin provided with the light section is
It is formed integrally, the through-hole portion of the opening sealing body,
They are connected to each other by a connecting part, and the connecting part is
The surface is covered with a light-shielding resin.
LED display for the butterflies.
形状とされたことを特徴とする請求項１記載のＬＥＤ表
示器。2. Each of the light-transmitting portions of the opening sealing member is a lens.
The LED display according to claim 1, wherein the LED display has a shape .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991026594U JP2520030Y2 (en) | 1991-03-26 | 1991-03-26 | LED display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991026594U JP2520030Y2 (en) | 1991-03-26 | 1991-03-26 | LED display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04114077U JPH04114077U (en) | 1992-10-07 |
| JP2520030Y2 true JP2520030Y2 (en) | 1996-12-11 |
Family
ID=31911032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991026594U Expired - Fee Related JP2520030Y2 (en) | 1991-03-26 | 1991-03-26 | LED display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520030Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2408135B (en) * | 2003-11-14 | 2007-03-28 | Box Consultants Ltd | Modular display system |
| JP5263788B2 (en) * | 2009-10-22 | 2013-08-14 | シャープ株式会社 | Display device |
| JP6164411B2 (en) * | 2013-07-30 | 2017-07-19 | 大日本印刷株式会社 | Solar cell composite light emitting device and solar cell |
| CN104680947A (en) * | 2015-02-15 | 2015-06-03 | 北京环宇蓝博科技有限公司 | Device and method for eliminating moire fringes from LED (light emitting diode) screen and improving filling coefficient |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5267292A (en) * | 1975-12-01 | 1977-06-03 | Citizen Watch Co Ltd | Luminescent diode display unit |
| JPS5560988A (en) * | 1978-10-30 | 1980-05-08 | Sanyo Electric Co | Lenticular radiation display |
| JPS6098876U (en) * | 1983-12-10 | 1985-07-05 | ローム株式会社 | display device |
| JPS6181634A (en) * | 1984-09-28 | 1986-04-25 | Toshiba Corp | Assembling method of semiconductor device |
| JPH0447747Y2 (en) * | 1986-08-25 | 1992-11-11 | ||
| JPH0416469Y2 (en) * | 1986-10-03 | 1992-04-13 | ||
| JPH0233185U (en) * | 1988-08-27 | 1990-03-01 | ||
| JPH0820851B2 (en) * | 1988-09-21 | 1996-03-04 | スタンレー電気株式会社 | LED display device |
| JP2608331B2 (en) * | 1989-08-01 | 1997-05-07 | キヤノン株式会社 | Thermal transfer recording method and thermal transfer material |
-
1991
- 1991-03-26 JP JP1991026594U patent/JP2520030Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04114077U (en) | 1992-10-07 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |