JPH0670919B2 - Electroluminescent display - Google Patents
Electroluminescent displayInfo
- Publication number
- JPH0670919B2 JPH0670919B2 JP60244702A JP24470285A JPH0670919B2 JP H0670919 B2 JPH0670919 B2 JP H0670919B2 JP 60244702 A JP60244702 A JP 60244702A JP 24470285 A JP24470285 A JP 24470285A JP H0670919 B2 JPH0670919 B2 JP H0670919B2
- Authority
- JP
- Japan
- Prior art keywords
- organic
- sheet
- vinyl acetate
- acetate copolymer
- display body
- 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
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 26
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 230000006866 deterioration Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 6
- 239000005083 Zinc sulfide Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910052984 zinc sulfide Inorganic materials 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 description 2
- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 2
- 239000012190 activator Substances 0.000 description 2
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910001586 aluminite Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は野外で使用されるエレクトロルミネセンス（以
下ELと記す。）表示体に関するものである。TECHNICAL FIELD The present invention relates to an electroluminescence (hereinafter referred to as EL) display used in the field.
（従来技術及びその欠点） EL表示体を構成するEL素子は大別すると無機EL素子と有
機EL素子とがある。無機EL素子はガラス基板上にEL発光
材を被着したものであり、有機EL素子は有機フィルム、
例えばフッ素樹脂フィルムでEL発光材を挟持したもので
ある。有機EL素子は輝度の劣化・コスト的にも無機EL素
子よりも有効であり最大の特徴は可撓性を有しており、
曲面状などの表示装置に利用できることである。(Prior Art and Its Deficiencies) EL elements constituting an EL display body are roughly classified into an inorganic EL element and an organic EL element. An inorganic EL element is a glass substrate coated with an EL light-emitting material, an organic EL element is an organic film,
For example, an EL light emitting material is sandwiched between fluororesin films. The organic EL element is more effective than the inorganic EL element in terms of luminance deterioration and cost, and the greatest feature is that it has flexibility,
That is, it can be used for a display device such as a curved surface.
第２図は有機EL素子の基本構造を示す断面図である。FIG. 2 is a sectional view showing the basic structure of an organic EL element.
螢光体層13は硫化亜鉛（ZnS）またはZnSとセレン化亜鉛
（ZnSe）との混晶、ZnSと硫化カドミウム（CdS）の混晶
などを母材とし、これに適当な付活剤を添加して形成さ
れるものである。この螢光体層13の表面には透明導電膜
である酸化スズ（SuO2）12が被着され、螢光体層13の裏
面には白色反射層14を介してアルミニウム（Al）等の裏
面電極15が被着形成される。さらに、保護シート11とし
て有機フィルム、例えばフッ素系樹脂フィルムが全体を
密封し、有機EL素子が完成する。この時、透明電極12及
び表面電極15の間に50〜1000Hz:50〜100Vの交番電圧を
印加すると螢光体層13が面発光する。前記付活剤によっ
て緑、青、橙黄などに任意の色で面発光させることが可
能である。The fluorescent material layer 13 has a base material such as zinc sulfide (ZnS) or a mixed crystal of ZnS and zinc selenide (ZnSe), a mixed crystal of ZnS and cadmium sulfide (CdS), and a suitable activator is added thereto. Is formed. Tin oxide (SuO 2 ) 12, which is a transparent conductive film, is adhered to the surface of the phosphor layer 13, and the back surface of the phosphor layer 13 is a back surface of aluminum (Al) or the like via a white reflective layer 14. The electrode 15 is deposited. Furthermore, an organic film, for example, a fluorine-based resin film, is hermetically sealed as the protective sheet 11 to complete the organic EL element. At this time, when an alternating voltage of 50 to 1000 Hz: 50 to 100 V is applied between the transparent electrode 12 and the surface electrode 15, the phosphor layer 13 emits surface light. By the activator, it is possible to cause surface emission of any color such as green, blue and orange yellow.
しかしながら今日まで有機EL素子は一部の民生品の計器
や屋内のアクセサリ照明装置や液晶のバックライトなど
に使用されているにすぎない。However, to date, organic EL devices have been used only for some consumer instruments, indoor accessory lighting devices, and liquid crystal backlights.
これは、有機EL素子が湿気や紫外線等耐候性に極めて弱
いためである。例えば有機EL素子に50Hz、100Vの電圧を
印加し、湿度90％の状態で面発光た場合、有機EL素子の
輝度の半減期が1000時間となり、とても野外での使用に
耐えるものではなかった。This is because the organic EL element is extremely weak in weather resistance such as humidity and ultraviolet rays. For example, when a voltage of 50 Hz and 100 V was applied to an organic EL element and surface emission was performed at a humidity of 90%, the half-life of luminance of the organic EL element was 1000 hours, which was not very durable for outdoor use.
（本発明の目的） 本発明は上述の欠点を解消し、屋外で使用しても湿気及
び紫外線によるEL素子の特性劣化の少ないEL表示体を提
供することを目的とする。(Object of the Invention) An object of the present invention is to solve the above-mentioned drawbacks and to provide an EL display body in which the characteristics of the EL element are less deteriorated by humidity and ultraviolet rays even when used outdoors.
また、本発明は、有機EL素子のもつ可撓性を効果的に生
かせる、例えば円筒状や曲面状のデイスプレイなどに使
用し得るEL表示体を提供することにある。Another object of the present invention is to provide an EL display body that can effectively utilize the flexibility of the organic EL element and can be used in, for example, a cylindrical or curved display.
（問題点を解決するための具体的な手段） 上述の問題を解決するために本発明が行った具体的手段
は有機フィルムで包被されたエレクトロルミネセンス素
子をエチレン酢酸ビニル共重合体シートで挟持するとと
もに可撓性金属基板上に配置したことである。(Specific Means for Solving Problems) The specific means for solving the above-mentioned problems is to provide an electroluminescent element covered with an organic film with an ethylene vinyl acetate copolymer sheet. That is, it is sandwiched and arranged on a flexible metal substrate.
（作用） 本発明は、上述の具体的手段により、耐候性に極めて弱
い有機EL素子を加熱によって完全に密着封止するエチレ
ン酢酸ビニル共重合体シートと、さらに耐紫外線・耐湿
性透光シート具体的にはポリエステルフィルムとを併用
することによって湿気及び紫外線（波長450nm以下）を
遮断し、有機EL素子の輝度（本発明では照度で検討し
た。）の劣化を有効におさえ、この結果、屋外でも充分
使用することが可能でかつ、可撓性を有する極めて有益
なEL表示体となる。(Function) The present invention provides an ethylene vinyl acetate copolymer sheet for completely adhering and sealing an organic EL element having extremely weak weather resistance by heating by the above-mentioned specific means, and further an ultraviolet ray / moisture resistant transparent sheet. Specifically, by using together with a polyester film, it blocks moisture and ultraviolet rays (wavelength 450 nm or less) and effectively suppresses the deterioration of the brightness of the organic EL element (in the present invention, the illuminance was examined.). As a result, even outdoors. It is an extremely useful EL display that can be used sufficiently and has flexibility.
（実施例） 以下、本発明を図面に基づいて詳説する。(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.
第１図は本発明のEL表示体の断面図である。FIG. 1 is a sectional view of an EL display body of the present invention.
可撓性金属基板１上に第１のエチレン酢酸ビニル共重合
体シート２を重畳し、該シート上に有機EL素子３を配置
する。次いで、第２のエチレン酢酸ビニル共重合体シー
ト４を重畳し、さらに透光シート５を重畳し、EL表示体
６が構成される。The first ethylene vinyl acetate copolymer sheet 2 is superposed on the flexible metal substrate 1, and the organic EL element 3 is arranged on the sheet. Next, the second ethylene-vinyl acetate copolymer sheet 4 is superposed, and further the translucent sheet 5 is superposed so that the EL display 6 is constituted.
可撓性金属基板１は湿気に強く、酸化しない様にアルマ
イト板、ステンレス板が用いられ、該基板１の厚みは0.
5〜1.0mm程度である。The flexible metal substrate 1 is made of an alumite plate or a stainless plate so that it is resistant to moisture and does not oxidize. The thickness of the substrate 1 is 0.
It is about 5 to 1.0 mm.
該基板１上に慣用名EVAやデュミラン（商品名）如き第
１のエチレン酢酸ビニル共重合体シート２が重畳されて
いる。このエチレン酢酸ビニル共重合体シート２の厚み
は0.8mm程である。A first ethylene vinyl acetate copolymer sheet 2 such as a commonly known EVA or Dumilan (trade name) is superposed on the substrate 1. The thickness of this ethylene vinyl acetate copolymer sheet 2 is about 0.8 mm.
該第１のエチレン酢酸ビニル共重合体シート２上に発光
させたり形状にした有機EL素子３を配置し、次いで第２
のエチレン酢酸ビニル共重合体シート４で有機EL素子３
を完全に被い、有機EL素子３の外周面で第１のエチレン
酢酸ビニル共重合体シート２と密着させる。A light-emitting or shaped organic EL element 3 is arranged on the first ethylene-vinyl acetate copolymer sheet 2, and then the second
Organic EL element 3 with ethylene vinyl acetate copolymer sheet 4
Is completely covered, and the outer peripheral surface of the organic EL element 3 is brought into close contact with the first ethylene-vinyl acetate copolymer sheet 2.
第２のエチレン酢酸ビニル共重合体シート４は有機EL素
子３の発光面側に位置するため、薄い方が望ましいが、
耐候性を鑑み、少なくとも0.3mm以上は必要である。Since the second ethylene-vinyl acetate copolymer sheet 4 is located on the light emitting surface side of the organic EL element 3, it is preferable that it be thin.
At least 0.3 mm or more is necessary in view of weather resistance.
さらに第２のエチレン酢酸ビニル共重合体シート４を完
全に被覆する透光シート５を重畳する。Further, a transparent sheet 5 that completely covers the second ethylene-vinyl acetate copolymer sheet 4 is superposed.
該透光シート５は湿気及び紫外線（波長450mm以下の
光）を遮断するものでかつ透光性を有するポリエステル
フィルムが使用され、その厚みは少なく20μｍ程度あれ
ば充分である。The light-transmitting sheet 5 is made of a polyester film which blocks moisture and ultraviolet rays (light having a wavelength of 450 mm or less) and has a light-transmitting property, and the thickness thereof is small and about 20 μm is sufficient.
この可撓性金属基板１−第１のエチレン酢酸ビニル共重
合体シート２−有機EL素子３−第２のエチレン酢酸ビニ
ル共重合体シート４−透光シート５からなる積層体を真
空引きし、加熱した後加圧し各シート、各層が完全に密
着して封止してEL表示体６を得る。The flexible metal substrate 1-the first ethylene vinyl acetate copolymer sheet 2-the organic EL element 3-the second ethylene vinyl acetate copolymer sheet 4-the translucent sheet 5 is evacuated, After heating and pressurizing, each sheet and each layer are completely adhered and sealed to obtain the EL display body 6.
尚、第１及び第２のエチレン酢酸ビニル共重合体２、４
にEVAを使用した際は、加熱条件160℃で数分間維持し、
加圧後さらに再加熱する架橋処理が必要であり、デュミ
ランを使用した際は同条件110℃、数十分間維持し加圧
しただけで充分各シート、各層を密着することが可能で
ある。The first and second ethylene vinyl acetate copolymers 2, 4
When using EVA, keep it at a heating condition of 160 ℃ for several minutes,
It is necessary to carry out a cross-linking treatment of further heating after pressurizing, and when using dumilan, it is possible to adhere each sheet and each layer just by maintaining the same condition at 110 ° C. for several tens of minutes and pressurizing.
本発明者らは、本発明のEL表示体６と第２図で示す従来
のEL素子との耐候性による照度の劣化を考察した。The present inventors considered deterioration of the illuminance due to the weather resistance of the EL display body 6 of the present invention and the conventional EL element shown in FIG.
本発明のEL表示体６は可撓性金属基板１としてアルミイ
ト板（厚み1.0mm）、第１のエチレン酢酸ビニル共重合
体シート２としてEVA（厚み0.8mm）、第２のシート４と
してEVA（厚み0.4mm）透光シート５としてポリエステル
フィルム（厚み25μｍ）とした。The EL display 6 of the present invention comprises an aluminite plate (thickness 1.0 mm) as the flexible metal substrate 1, an EVA (thickness 0.8 mm) as the first ethylene-vinyl acetate copolymer sheet 2, and an EVA (thickness) as the second sheet 4. A polyester film (thickness: 25 μm) was used as the translucent sheet 5 (thickness: 0.4 mm).
EL表示体６及び従来のEL素子の初期照度、紫外線照射装
置による紫外線を100時間照射した後の照度、及び200時
間照射した後の照度を測定し、その劣化率を考察した。The initial illuminance of the EL display body 6 and the conventional EL element, the illuminance after 100 hours of irradiation with ultraviolet rays by the ultraviolet irradiation device, and the illuminance after 200 hours of irradiation were measured, and the deterioration rate was considered.
尚、紫外線照射装置による100時間照射は自然光による
半年分の紫外線照射に相当し、200時間照射は同１年分
の紫外線照射に相当する。Incidentally, 100 hours of irradiation by the ultraviolet irradiation device corresponds to half a year of ultraviolet irradiation by natural light, and 200 hours of irradiation corresponds to one year of ultraviolet irradiation.
本発明のEL表示体６において初期照度が69.0lxであり、
紫外線照射装置による紫外線100時間照射後には56.5
lx、200時間照射後には56.2lxとなる。即ち、初期照度
に対する劣化率が100時間照射で18％、200時間照射で19
％となる。In the EL display body 6 of the present invention, the initial illuminance is 69.0 l x ,
56.5 after 100 hours of UV irradiation by the UV irradiation device
the 56.2L x after l x, 200 hours irradiation. That is, the deterioration rate with respect to the initial illuminance is 18% after 100 hours irradiation and 19% after 200 hours irradiation.
%.
これに対して従来のEL素子だけでは初期照度が60.0lxで
あり、紫外線照射装置による紫外線100時間照射後には4
8.5lx、200時間照射後には44.5lxとなる。即ち、初期照
度に対する劣化率が100時間照射で19％、200時間照射後
で26％となる。In contrast only conventional EL devices the initial illuminance is 60.0 L x, after irradiation for 100 hours ultraviolet by the ultraviolet irradiation device 4
The 44.5L x in 8.5 L x, 200 hours after irradiation. That is, the deterioration rate with respect to the initial illuminance is 19% after 100 hours of irradiation and 26% after 200 hours of irradiation.
上述から明らかな様に本発明のEL表示体６は従来のEL素
子に比べ、紫外線による劣化率を低く抑えることができ
る。As is apparent from the above, the EL display body 6 of the present invention can suppress the deterioration rate due to ultraviolet rays to a low level as compared with the conventional EL element.
また、注目すべき点は、従来のEL素子単体の比較例の初
期照度が60.5lxであるのに対し本発明のEL表示体６の初
期照度は69.0lxと約14％も向上し、紫外線照射装置で紫
外線を100時間、200時間と照射しても常に従来のEL素子
よりも20〜30％も高い値を示すことである。Further, it should be noted that the initial illuminance of the comparative example of the conventional EL element alone is 60.5 l x , whereas the initial illuminance of the EL display body 6 of the present invention is 69.0 l x, which is about 14% higher. Even if it is irradiated with ultraviolet rays for 100 hours and 200 hours with an ultraviolet irradiation device, it is always 20 to 30% higher than conventional EL elements.
これは有機EL素子３上に積層した薄いエチレン酢酸ビニ
ルシート４及び透光シート５を介して密着封止時に施す
加熱が一種のアニールとして有機EL素子３に好状態を作
り出すと考えられる。It is considered that the heating performed during the close sealing through the thin ethylene vinyl acetate sheet 4 and the translucent sheet 5 laminated on the organic EL element 3 creates a favorable state in the organic EL element 3 as a kind of annealing.
さらに本発明は本発明のEL表示体６を屋外暴露を１カ月
間行ったが、湿気による照度の劣化はほとんど認められ
ないことを確認した。Further, according to the present invention, the EL display body 6 of the present invention was exposed to the outdoors for one month, and it was confirmed that deterioration of illuminance due to humidity was hardly observed.
上述のEL表示体６は有機EL素子の構造上の大きな特徴で
ある可撓性を最大限維持するため可撓性金属基板と透光
シートを利用した。The above-mentioned EL display body 6 uses a flexible metal substrate and a light-transmissive sheet in order to maximize flexibility, which is a major structural feature of the organic EL element.
このためにEL表示装置にEL表示体６を使用すれば平板状
のディスプレイは勿論のこと円筒状又は曲面状のディス
プレイなどにも使用され用途が極めて広がる。For this reason, if the EL display body 6 is used in the EL display device, it can be used not only in a flat-panel display but also in a cylindrical or curved display and the like, and the application is greatly expanded.
（本発明の効果） 以上の様に本発明によれば、可撓性金属基板−エチレン
酢酸ビニル共重合体シート−有機EL素子−エチレン酢酸
ビニル共重合体シートの順に重畳し、加熱によって密着
封止したことにより、更にはエチレン酢酸ビニル共重合
体シート上に耐紫外線・耐湿性透光シートを重畳したこ
とにより、有機EL素子のもつ可撓性を維持しつつ、湿気
によるEL素子の輝度劣化を皆無とし、さらには紫外線に
よる劣化を有効に抑えることができる。このためこれま
で使用できなかった野外でも充分使用に耐え得るEL表示
体が可能となる。(Effect of the present invention) As described above, according to the present invention, the flexible metal substrate-ethylene vinyl acetate copolymer sheet-organic EL element-ethylene vinyl acetate copolymer sheet are superposed in this order and sealed by heating. By stopping it, and by superimposing an ultraviolet and moisture resistant translucent sheet on the ethylene-vinyl acetate copolymer sheet, the flexibility of the organic EL element is maintained and the brightness of the EL element deteriorates due to moisture. Can be eliminated, and deterioration due to ultraviolet rays can be effectively suppressed. For this reason, it becomes possible to provide an EL display body that can be sufficiently used even in the outdoors, which has been unusable until now.
さらに、本発明によれば有機EL素子単体のもつ初期照度
を向上させることができ照度が大となるEL表示体が得ら
れる。Further, according to the present invention, an EL display body can be obtained in which the initial illuminance of the organic EL element alone can be improved and the illuminance is large.
第１図は本発明のエレクトロルミネセンス表示体の断面
図であり、第２図はエレクトロルミネセンス素子の基本
構造を示す断面図である。 １……可撓性金属基板 2,4……エチレン酢酸ビニル共重合体シート ３……エレクトロルミネセンス素子 ５……透光シートFIG. 1 is a sectional view of an electroluminescent display body of the present invention, and FIG. 2 is a sectional view showing a basic structure of an electroluminescent element. 1 ... Flexible metal substrate 2,4 ... Ethylene-vinyl acetate copolymer sheet 3 ... Electroluminescence element 5 ... Translucent sheet
Claims (3)
ネセンス素子をエチレン酢酸ビニル共重合体シートで挟
持するとともに可撓性金属基板上に配置したことを特徴
とするエレクトロルミネセンス表示体。1. An electroluminescent display comprising an electroluminescent element covered with an organic film sandwiched between ethylene vinyl acetate copolymer sheets and arranged on a flexible metal substrate.
ンレス板のいずれかであることを特徴とする特許請求の
範囲第１項記載のエレクトロルミネセンス表示体。2. The electroluminescent display body according to claim 1, wherein the flexible metal substrate is one of an alumite plate and a stainless plate.
に耐紫外線・耐湿性透光シートを重畳したことを特徴と
する特許請求の範囲第１項記載のエレクトロルミネセン
ス表示体。3. An electroluminescent display member according to claim 1, wherein an ultraviolet and moisture resistant translucent sheet is superposed on the ethylene vinyl acetate copolymer sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60244702A JPH0670919B2 (en) | 1985-10-30 | 1985-10-30 | Electroluminescent display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60244702A JPH0670919B2 (en) | 1985-10-30 | 1985-10-30 | Electroluminescent display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62103998A JPS62103998A (en) | 1987-05-14 |
| JPH0670919B2 true JPH0670919B2 (en) | 1994-09-07 |
Family
ID=17122655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60244702A Expired - Fee Related JPH0670919B2 (en) | 1985-10-30 | 1985-10-30 | Electroluminescent display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0670919B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0322875Y2 (en) * | 1986-03-27 | 1991-05-17 | ||
| JPH01145640U (en) * | 1988-03-17 | 1989-10-06 | ||
| JPH02136996U (en) * | 1989-04-18 | 1990-11-15 | ||
| US5856030A (en) | 1996-12-30 | 1999-01-05 | E.L. Specialists, Inc. | Elastomeric electroluminescent lamp |
| JP3980405B2 (en) * | 2002-05-17 | 2007-09-26 | 株式会社東芝 | Image display device |
| JP4963419B2 (en) | 2007-01-31 | 2012-06-27 | キヤノン株式会社 | Flexible display device |
| JP5446790B2 (en) * | 2009-12-02 | 2014-03-19 | セイコーエプソン株式会社 | Electro-optical device and electronic apparatus |
-
1985
- 1985-10-30 JP JP60244702A patent/JPH0670919B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62103998A (en) | 1987-05-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |