JPH06123640A - Display plate - Google Patents
Display plateInfo
- Publication number
- JPH06123640A JPH06123640A JP4297716A JP29771692A JPH06123640A JP H06123640 A JPH06123640 A JP H06123640A JP 4297716 A JP4297716 A JP 4297716A JP 29771692 A JP29771692 A JP 29771692A JP H06123640 A JPH06123640 A JP H06123640A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- light
- display
- rear surface
- substrate
- 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
Links
Landscapes
- Details Of Measuring Devices (AREA)
- Details Of Measuring And Other Instruments (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、指示指標が後面側から
の発光により照明される表示板に関し、特に指示計器の
文字板として使用するのに適した表示板に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display plate on which an indicator is illuminated by light emitted from the rear surface side, and more particularly to a display plate suitable for use as a dial of an indicating instrument.
【０００２】[0002]
【従来の技術】例えば、自動車用指示計器においては、
夜間や周囲が暗い時に文字板の前面に印刷形成された目
盛や数字等の表示指標が明視できるように、表示指標が
後面側からの発光で照明されるようになっている。具体
的には、文字板に透光性基盤を採用し、表示指標がネガ
（表示指標が明るく見える）又はポジ（ネガと反対）の
表示形態となるように文字板を形成し、この文字板の背
後にランプから成る照明部材を配している（例えばＵＳ
Ｐ４８７８３８７，ＵＳＰ５０４７７６１）。2. Description of the Related Art For example, in an indicating instrument for an automobile,
The display index is illuminated by light emission from the rear surface side so that the display index such as a scale or a number printed on the front surface of the dial can be seen at night or in dark surroundings. Specifically, a translucent substrate is used for the dial plate, and the dial plate is formed so that the display index is a negative (the display index looks bright) or a positive (opposite to the negative) display form. A lighting member consisting of a lamp is placed behind the
P4878387, USP5047761).
【０００３】かかる指示計器では、表示指標の明るさが
照明部材からの距離差に応じて不均衡となり見づらくな
る。また、照明部材の発熱を考慮して指示計器を収納す
るケースに高価な耐熱材料を用いなければならない。ま
た、照明部材の発熱を考慮して照明部材とケースとの間
隔を広く取るため、ケースが大型化する。In such an indicating instrument, the brightness of the display index becomes unbalanced according to the distance difference from the illumination member, making it difficult to see. In addition, an expensive heat-resistant material must be used for the case accommodating the indicating instrument in consideration of heat generation of the lighting member. In addition, the size of the case is increased because the distance between the lighting member and the case is set wide in consideration of heat generation of the lighting member.
【０００４】このような問題を解決するものとして、文
字板の後面にエレクトロルミネセントランプパネル（以
下「ＥＬ」と言う）を配置するものがある（例えば、Ｕ
ＳＰ５０３６２４９）。As a means for solving such a problem, there is one in which an electroluminescent lamp panel (hereinafter referred to as "EL") is arranged on the rear surface of the dial (for example, U).
SP5036249).
【０００５】[0005]
【発明が解決しようとする課題】文字板の照明用として
ＥＬを採用すると、前記問題を解決することができる。
しかしながら、ＥＬを文字板の後面に配置するに際して
は、ＥＬの発光が文字板の表示指標を良好に照明するよ
うＥＬと文字板との位置を正確に合わせなければならな
い。また、ＥＬは薄く撓みやすい構成であるため、この
ＥＬを外部振動等の周囲雰囲気から保護する必要があ
り、例えばＥＬの後面に堅固なリアフレームを取り付け
ていた。したがって、文字板とＥＬ又は文字板，ＥＬ及
びリアフレームとの組み付けが煩雑となり製造が複雑で
あった。本発明は、この問題を解決することを目的と
し、ＥＬが一体化された表示板、特に指示計器用文字板
として使用するのに適した表示板を提供するものであ
る。When EL is used for illuminating the dial, the above problems can be solved.
However, when arranging the EL on the rear surface of the dial, it is necessary to accurately align the position of the EL and the dial so that the light emission of the EL illuminates the display index of the dial well. Since the EL is thin and easily bent, it is necessary to protect the EL from the ambient atmosphere such as external vibration. For example, a solid rear frame is attached to the rear surface of the EL. Therefore, the assembly of the dial and the EL or the dial, the EL and the rear frame is complicated and the manufacturing is complicated. The present invention aims to solve this problem, and provides a display board integrated with an EL, particularly a display board suitable for use as a dial for an indicating instrument.
【０００６】[0006]
【課題を解決するための手段】本発明は、前面に表示指
標を印刷形成した透光性基盤の後面に、前記表示指標に
対向した形状の透光性前面電極，この電極と略同形な発
光層及びこの発光層を介して前記前面電極と対向すると
共に前記前面電極との間に電圧を印加することにより前
記発光層が前記表示指標を後面側から照明する発光を行
う後面電極を順次印刷形成し、前記前面電極，前記発光
層及び前記後面電極を周囲雰囲気から隔絶及び保護する
絶縁層を前記基盤の後面に形成したことを特徴とし、特
に、前記絶縁層は、絶縁材料を印刷形成したことを特徴
とするものである。SUMMARY OF THE INVENTION According to the present invention, a transparent front electrode having a shape facing a display index is provided on a rear surface of a transparent base having a display index printed and formed on the front surface, and light emission having substantially the same shape as the electrode. A layer and a rear surface electrode facing the front electrode through the light emitting layer and sequentially applying a voltage between the front electrode and the light emitting layer to emit light for illuminating the display index from the rear surface side. And an insulating layer for isolating and protecting the front electrode, the light emitting layer, and the rear electrode from the ambient atmosphere, is formed on the rear surface of the base. In particular, the insulating layer is formed by printing an insulating material. It is characterized by.
【０００７】[0007]
【作用】表示板を構成する透光性基盤の後面に、印刷に
て直接前面電極，発光層及び後面電極を形成することに
より、ＥＬが一体化された表示板を得られる。特に、こ
れら前面電極，前記発光層及び前記後面電極を周囲雰囲
気から隔絶及び保護する絶縁層を前記基盤の後面に印刷
形成することにより、表示板の製造工程が単純化でき
る。By forming the front electrode, the light emitting layer and the rear electrode directly by printing on the rear surface of the translucent substrate constituting the display plate, a display plate in which the EL is integrated can be obtained. In particular, the manufacturing process of the display panel can be simplified by printing and forming an insulating layer on the rear surface of the substrate that isolates and protects the front electrode, the light emitting layer, and the rear electrode from the ambient atmosphere.
【０００８】[0008]
【実施例】以下、本発明の表示板を指示計器の文字板と
して使用する添付図面の実施例に基づき説明する。図
１，図２及び図３は、実施例の分解斜視図，要部断面図
及び要部の背面図であり、文字板（表示板）１は、透光
性基盤２の後面に、透光性前面電極３と、発光層４と、
後面電極５とを順次印刷及び乾燥し、更に絶縁層を形成
した後、基盤２の前面に走行速度及び燃料残量を示す表
示指標７を印刷及び乾燥して形成されており、電極３，
発光層４，電極５及び絶縁層６は従来のＥＬに相当す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A display plate according to the present invention will be described below as an embodiment of the accompanying drawings in which it is used as a dial plate of an indicating instrument. 1, FIG. 2 and FIG. 3 are an exploded perspective view, a sectional view of a main part and a rear view of the main part of the embodiment, and a dial (display plate) 1 is provided on the rear surface of the translucent base 2 with a light-transmitting material. Conductive front electrode 3, light emitting layer 4,
The rear surface electrode 5 is printed and dried in order, an insulating layer is further formed, and then a display index 7 indicating the traveling speed and the remaining fuel amount is printed and dried on the front surface of the base 2 to form the electrode 3,
The light emitting layer 4, the electrode 5 and the insulating layer 6 correspond to a conventional EL.
【０００９】基盤２は、従来の指示計器の文字板と同様
な樹脂例えばポリカーボネートパネル（厚さ約１．５ミ
リ）であり、指示指標７の表示形態をネガにする場合に
は表示指標７を白色等の透光性塗料で印刷し、他の部分
は黒色等の不透光性塗料で印刷することにより得られ、
ポジにする場合には反対にすれば得られる。本実施例で
は、従来の文字板と同様な印刷手法により、表示指標７
を白色塗料７ａで印刷し、他の部分は黒色塗料７ｂで印
刷するネガの表示指標７としている。The base 2 is made of a resin similar to a dial plate of a conventional indicating instrument, for example, a polycarbonate panel (thickness: about 1.5 mm). When the display form of the indicating indicator 7 is negative, the indicating indicator 7 is used. It is obtained by printing with a translucent paint such as white and the other parts with an opaque paint such as black.
If you want to make it positive, you can get it by reversing. In this embodiment, the display index 7 is set by the printing method similar to that of the conventional dial.
Is printed with white paint 7a, and the other portion is used as a negative display index 7 printed with black paint 7b.
【００１０】前面電極３は、アニオン系界面活性剤から
成る分散剤を吸着させたスズを含有する酸化インジュウ
ムから成る金属酸化物と酢酸ビニル樹脂から成るバイン
ダ用樹脂とを混練してブチルセロソルブアセテートから
成る溶剤により粘度調整した透光性導電材料を、表示指
標７に対向した形状で印刷及び乾燥して形成されており
（膜厚約５ミクロン）、この前面電極３の周縁部には表
示指標７と対向しないように銀ペーストの低抵抗材料か
らなるバスバー８が印刷及び乾燥にて形成され、このバ
スバー８の一部は基盤２の後面の端部へ引き出されて端
子９となっている（膜厚約５ミクロン）。The front electrode 3 is made of butyl cellosolve acetate by kneading a metal oxide made of indium oxide containing tin adsorbed with a dispersant made of an anionic surfactant and a binder resin made of vinyl acetate resin. It is formed by printing and drying a transparent conductive material whose viscosity is adjusted with a solvent in a shape facing the display index 7 (film thickness of about 5 microns). A bus bar 8 made of a low resistance material of silver paste is formed by printing and drying so as not to face each other, and a part of this bus bar 8 is drawn out to an end portion of the rear surface of the base 2 to form a terminal 9. About 5 microns).
【００１１】発光層４は、硫化亜鉛の母剤に銅の活性剤
と必要に応じて塩素の賦活剤とを混ぜて成る蛍光材料を
吸水率の低いエポキシ樹脂の熱硬化性樹脂中に分散させ
た蛍光体ペーストを用いて、電極３と略同形（同一もし
くは若干大きめ）に印刷及び乾燥させて形成する（膜厚
約４０ミクロン）。For the light emitting layer 4, a fluorescent material prepared by mixing a zinc sulfide matrix with a copper activator and, if necessary, a chlorine activator is dispersed in a thermosetting resin of epoxy resin having a low water absorption rate. It is formed by printing and drying in the substantially same shape (same or slightly larger) as the electrode 3 using the above phosphor paste (film thickness of about 40 μm).
【００１２】後面電極５は、銀ペーストの反射性導電材
料を発光層４を介して前面電極３と対向するよう印刷及
び乾燥にて形成され、この後面電極５の一部は基盤２の
後面の端部へ引き出されて端子10となっている（膜厚約
１０ミクロン）。そして、端子９，10間すなわち電極
３，５間に所定の電圧を印加することにより発光層４が
発光を行い、この発光は表示指標７を後面側から照明す
る。なお、電極３，５及び端子９，10は、夫々の間で接
触（ショート）しないように注意して設計及び形成する
必要があることは言うまでもない。The rear electrode 5 is formed by printing and drying a reflective conductive material of silver paste so as to face the front electrode 3 through the light emitting layer 4, and a part of the rear electrode 5 is formed on the rear surface of the substrate 2. The terminal 10 is drawn out to the end to form a terminal 10 (film thickness is about 10 microns). Then, by applying a predetermined voltage between the terminals 9 and 10, that is, between the electrodes 3 and 5, the light emitting layer 4 emits light, and this light emission illuminates the display index 7 from the rear surface side. Needless to say, the electrodes 3 and 5 and the terminals 9 and 10 need to be designed and formed so as not to come into contact (short) with each other.
【００１３】絶縁層６は、前面電極３，発光層４及び後
面電極５を湿気や衝撃の周囲雰囲気から隔絶及び保護す
るもので、端子９，10を除く基盤２の後面に、薄膜ナイ
ロンシートやポリエチレンナフタレートフィルム等の高
分子絶縁部材を貼着することにより形成できるが、図１
及び図２で示すように、ガラスビーズのスペ−サ部材を
混入させたエポキシ樹脂の熱硬化性高分子材料を絶縁材
料として印刷及び乾燥にて形成することにより（膜厚約
１５ミクロン）、前記絶縁部材を用いるよりも文字板１
全体の厚さ及び重量を小さくすることができ、かつ、前
面電極３からこの絶縁層６までを全て印刷にて形成する
ことができるため、前記絶縁部材を用いるよりも製造工
程が単純化できる。The insulating layer 6 isolates and protects the front electrode 3, the light emitting layer 4 and the rear electrode 5 from the ambient atmosphere such as moisture and shock. On the rear surface of the substrate 2 excluding the terminals 9 and 10, a thin nylon sheet or It can be formed by attaching a polymer insulating member such as a polyethylene naphthalate film.
As shown in FIG. 2, a thermosetting polymer material of epoxy resin mixed with a spacer member of glass beads is formed as an insulating material by printing and drying (thickness: about 15 microns). Dial 1 rather than using an insulating member
Since the entire thickness and weight can be reduced and all of the front electrode 3 to the insulating layer 6 can be formed by printing, the manufacturing process can be simplified as compared with the case of using the insulating member.
【００１４】また、図面では示していないが、発光層４
の発光性能を向上させるため、必要に応じて電極３，５
間に誘電体層を介在させることも効果があり、かかる誘
電体層としては、チタン酸バリウムの誘電体を吸水率の
低いエポキシ樹脂の熱硬化性樹脂中に分散させた誘電体
ペーストを印刷及び乾燥させて形成する（膜厚約４０ミ
クロン）。Although not shown in the drawing, the light emitting layer 4
In order to improve the light emission performance of the electrodes 3, 5 as necessary.
It is also effective to interpose a dielectric layer between them.As such a dielectric layer, a dielectric paste in which a dielectric material of barium titanate is dispersed in a thermosetting resin of an epoxy resin having a low water absorption rate is printed and It is formed by drying (film thickness is about 40 microns).
【００１５】なお、図３で示す11は、前面電極３を印刷
する際に同一材料にて同時に印刷される位置合わせ用の
マークであり、表示指標７と対向しない基盤２の後面に
設けられ、基盤２の前面に表示指標７を形成する際はこ
のマーク11を基準として表示指標７のパターンを有する
印刷用マスク（図示しない）を合わせて表示指標７を印
刷形成する。Reference numeral 11 shown in FIG. 3 is a positioning mark that is printed at the same time with the same material when printing the front electrode 3, and is provided on the rear surface of the base 2 that does not face the display index 7. When forming the display index 7 on the front surface of the base 2, the display index 7 is formed by printing with a printing mask (not shown) having the pattern of the display index 7 as the reference.
【００１６】以上の構成から成る文字板１を図示しない
指示計器に設置し、端子９，10をスイッチ（図示しな
い）を介して駆動回路（図示しない）に接続し、夜間や
周囲が暗い時に前記スイッチを入れると発光層４が発光
を行い、表示指標７が明るく照明される。The dial 1 having the above-mentioned structure is installed in an indicator (not shown), terminals 9 and 10 are connected to a drive circuit (not shown) via a switch (not shown), and when the night or the surroundings are dark, When the switch is turned on, the light emitting layer 4 emits light, and the display index 7 is illuminated brightly.
【００１７】なお、この実施例で示した指示計器の文字
板１の他、非常口を示す案内板や装飾用のサインボード
等の表示部材として使用することもできる。また、使用
する材料は種々選択できることは言うまでもなく、発光
層４の材料に応じて発光の色を任意に選択することがで
きる。In addition to the dial 1 of the indicating instrument shown in this embodiment, it can also be used as a display member such as a guide plate indicating an emergency exit or a signboard for decoration. Needless to say, various materials can be used, and the color of light emission can be arbitrarily selected according to the material of the light emitting layer 4.
【００１８】更に、後面電極５を前面電極３と同様な材
料にて透光性とすれば、発光層４からの発光は文字板１
の後方へも照射され、文字板１の後方に位置して文字板
１と一体的に表示を行う積算計（図示しない）を照明す
ることもできる。Further, if the rear electrode 5 is made of a material similar to that of the front electrode 3 so as to be translucent, the light emitted from the light emitting layer 4 is emitted from the dial 1.
It is also possible to illuminate the rear of the dial 1 and illuminate a totalizer (not shown) located behind the dial 1 and displaying integrally with the dial 1.
【００１９】なお、前記実施例を含む本発明において、
「印刷」は、スクリーン印刷等の適当な印刷手法を選択
できることは勿論、ロールコーテイング等の塗膜手法を
も含むものである。In the present invention including the above embodiment,
"Printing" includes not only the selection of an appropriate printing method such as screen printing but also a coating method such as roll coating.
【００２０】[0020]
【発明の効果】本発明は、前面に表示指標を印刷形成し
た透光性基盤の後面に、前記表示指標に対向した形状の
透光性前面電極，この電極と略同形な発光層及びこの発
光層を介して前記前面電極と対向すると共に前記前面電
極との間に電圧を印加することにより前記発光層が前記
表示指標を後面側から照明する発光を行う後面電極を順
次印刷形成し、前記前面電極，前記発光層及び前記後面
電極を周囲雰囲気から隔絶及び保護する絶縁層を前記基
盤の後面に形成したことを特徴とするものであり、ＥＬ
が一体化された表示板を得ることができる。従って、Ｅ
Ｌを独立した部材として製造した後表示板に取り付ける
従来例に比べて、表示板の製造が簡素化される。According to the present invention, a transparent front electrode having a shape facing the display index is formed on the rear surface of the transparent substrate having a display index printed on the front surface, a light emitting layer having substantially the same shape as the electrode, and the light emission. The front surface electrode is sequentially printed and formed so as to face the front surface electrode through a layer and apply a voltage between the front surface electrode and the light emitting layer to emit light to illuminate the display index from the rear surface side. An insulating layer for isolating and protecting the electrodes, the light emitting layer and the rear surface electrode from the ambient atmosphere is formed on the rear surface of the base,
It is possible to obtain a display panel in which is integrated. Therefore, E
The manufacturing of the display board is simplified as compared with the conventional example in which L is manufactured as an independent member and then attached to the display board.
【００２１】また、表示板の基盤の後面に直接前面電極
以下を形成するため、発光層からの発光の減衰を抑えて
発光効率を高めることができ、同一電圧印加において従
来よりも表示指標の明るさを高めることができる。Further, since the front electrode and below are directly formed on the rear surface of the base of the display plate, it is possible to suppress the attenuation of the light emitted from the light emitting layer and improve the light emitting efficiency. The height can be increased.
【００２２】特に、これら前面電極，発光層及び後面電
極を周囲雰囲気から隔絶及び保護する絶縁層を基盤の後
面に印刷形成することにより、表示板全体の厚さ及び重
量を小さくすることができ、かつ、前面電極からこの絶
縁層までを全て印刷にて形成することができるため、製
造工程が単純化できる。Particularly, by forming an insulating layer for isolating and protecting the front electrode, the light emitting layer and the rear electrode from the ambient atmosphere on the rear surface of the substrate by printing, the total thickness and weight of the display panel can be reduced, In addition, since the entire surface from the front electrode to the insulating layer can be formed by printing, the manufacturing process can be simplified.
【図１】本発明の実施例の分解斜視図。FIG. 1 is an exploded perspective view of an embodiment of the present invention.
【図２】同上実施例の要部断面図。FIG. 2 is a sectional view of an essential part of the embodiment.
【図３】同上実施例の基盤に前面電極及びバスバーを形
成した状態での背面図。FIG. 3 is a rear view of the substrate according to the above-described embodiment with a front electrode and a bus bar formed thereon.
１ 文字板（表示板） ２ 基盤 ３ 前面電極 ４ 発光層 ５ 後面電極 ６ 絶縁層 ７ 表示指標 ８ バスバー 1 dial (display plate) 2 substrate 3 front electrode 4 light emitting layer 5 rear electrode 6 insulating layer 7 display index 8 bus bar
Claims (2)
盤の後面に、前記表示指標に対向した形状の透光性前面
電極，この電極と略同形な発光層及びこの発光層を介し
て前記前面電極と対向すると共に前記前面電極との間に
電圧を印加することにより前記発光層が前記表示指標を
後面側から照明する発光を行う後面電極を順次印刷形成
し、前記前面電極，前記発光層及び前記後面電極を周囲
雰囲気から隔絶及び保護する絶縁層を前記基盤の後面に
形成したことを特徴とする表示板。1. A transparent front electrode having a shape facing the display index, a light-emitting front electrode having a shape substantially facing the display index, and a light-emitting layer having the same shape as the electrode and a light-emitting layer on the rear surface of the light-transmissive substrate having a display index printed and formed on the front surface. The light emitting layer sequentially prints and forms a rear surface electrode that emits light to illuminate the display index from the rear surface side by applying a voltage between the front surface electrode and the front surface electrode. A display panel, wherein an insulating layer for isolating and protecting the layer and the rear electrode from the ambient atmosphere is formed on the rear surface of the base.
とを特徴とする請求項１記載の表示板。2. The display panel according to claim 1, wherein the insulating layer is formed by printing an insulating material.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4297716A JPH06123640A (en) | 1992-10-09 | 1992-10-09 | Display plate |
| DE69216788T DE69216788T2 (en) | 1991-11-28 | 1992-11-06 | Display device with electroluminescent lighting |
| EP92310189A EP0545558B1 (en) | 1991-11-28 | 1992-11-06 | Display panel with electroluminescent illumination |
| US07/972,681 US5557295A (en) | 1991-11-28 | 1992-11-06 | Display panel |
| TW081109476A TW226436B (en) | 1991-11-28 | 1992-11-26 | |
| CA002083915A CA2083915C (en) | 1991-11-28 | 1992-11-26 | Display panel |
| KR1019920022741A KR100198504B1 (en) | 1991-11-28 | 1992-11-27 | Display panel with electroluminescent illumination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4297716A JPH06123640A (en) | 1992-10-09 | 1992-10-09 | Display plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06123640A true JPH06123640A (en) | 1994-05-06 |
Family
ID=17850249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4297716A Pending JPH06123640A (en) | 1991-11-28 | 1992-10-09 | Display plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06123640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097779A1 (en) * | 2021-11-30 | 2023-06-08 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS563414B2 (en) * | 1976-08-13 | 1981-01-24 | ||
| JPS62172220A (en) * | 1986-01-25 | 1987-07-29 | Nissan Motor Co Ltd | Illumination structure of display panel of indicating instrument |
| JPH02201889A (en) * | 1989-01-31 | 1990-08-10 | Central Glass Co Ltd | El device |
| JPH0479191A (en) * | 1990-07-20 | 1992-03-12 | Oki Electric Ind Co Ltd | Electroluminescence(el) panel |
-
1992
- 1992-10-09 JP JP4297716A patent/JPH06123640A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS563414B2 (en) * | 1976-08-13 | 1981-01-24 | ||
| JPS62172220A (en) * | 1986-01-25 | 1987-07-29 | Nissan Motor Co Ltd | Illumination structure of display panel of indicating instrument |
| JPH02201889A (en) * | 1989-01-31 | 1990-08-10 | Central Glass Co Ltd | El device |
| JPH0479191A (en) * | 1990-07-20 | 1992-03-12 | Oki Electric Ind Co Ltd | Electroluminescence(el) panel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097779A1 (en) * | 2021-11-30 | 2023-06-08 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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