JP2011171068A - Display device - Google Patents
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Abstract
Description
本発明は、複数の面状発光素子を備える表示装置に関する。 The present invention relates to a display device including a plurality of planar light emitting elements.
複数色が使用されている表示装置において、それぞれの色を独立して点滅制御することが可能となれば、表示装置の存在感を際立たせることができる。このような表示装置が、例えば、誘導灯などに用いられると、存在感を高め、誘目性を向上することができる。このような表示装置において、複数色を別々に制御する場合、一つの方法としてドット単位で並べるディスプレイが挙げられるが、構造が複雑となるので、製造コストが高くなる。 In a display device in which a plurality of colors are used, if the respective colors can be controlled to blink independently, the presence of the display device can be emphasized. When such a display device is used for, for example, a guide light, the presence can be increased and the attractiveness can be improved. In such a display device, when a plurality of colors are controlled separately, a display in which dots are arranged in units of dots can be cited as one method. However, since the structure becomes complicated, the manufacturing cost increases.
また、例えば、特許文献１に示されるように、一つの基板上に、複数の発光セグメントを配置してなる有機ＥＬ素子が知られているが、各発光セグメントを接続する不透過の導体部により、非発光部が生じる。 Further, for example, as shown in Patent Document 1, an organic EL element in which a plurality of light emitting segments are arranged on one substrate is known. However, an opaque conductor portion that connects each light emitting segment is known. As a result, a non-light emitting portion is generated.
また、発光層を製造する際、蒸着マスクを用いて色を分ける方法も挙げられるが、マスク部が非発光部となる。 Moreover, when manufacturing a light emitting layer, although the method of classifying a color using a vapor deposition mask is also mentioned, a mask part turns into a non-light-emitting part.
本発明は、上記問題を解決するためになされたものであり、発光時に非発光となる部分を生じ難くすることができる表示装置を提供することを目的とする。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a display device that can make it difficult to produce a portion that does not emit light during light emission.
上記目的を達成するために請求項１の発明は、発光によって模様を表示する面状発光素子と、前記面状発光素子が配置される素子基板と、を備え、前記面状発光素子は、模様が形成されている発光層と、前記発光層と同一平面上において該発光層が配置されていない箇所に配置される透明絶縁層と、前記発光層及び透明絶縁層を挟持し該発光層に給電する陽極電極及び陰極電極と、を有し、前記面状発光素子が複数組み合わせて用いられる表示装置であって、前記組み合わせられる複数の面状発光素子の発光層は、該面状発光素子の面と直交する方向から見たとき、相互にオーバーラップするように構成されているものである。 In order to achieve the above object, the invention according to claim 1 includes a planar light emitting element that displays a pattern by light emission, and an element substrate on which the planar light emitting element is disposed. A light emitting layer on which the light emitting layer is formed, a transparent insulating layer disposed at a location where the light emitting layer is not disposed on the same plane as the light emitting layer, and sandwiching the light emitting layer and the transparent insulating layer to feed power to the light emitting layer An anode electrode and a cathode electrode, and a plurality of the planar light emitting elements are used in combination, and the light emitting layer of the combined planar light emitting elements is a surface of the planar light emitting element. When viewed from the direction orthogonal to the direction, the two are configured to overlap each other.
請求項２の発明は、前記面状発光素子は、前記発光層の発光色が単色であるものである。 According to a second aspect of the present invention, in the planar light emitting element, the light emitting color of the light emitting layer is a single color.
請求項３の発明は、前記組み合わせられる複数の面状発光素子は、電力供給系統がそれぞれ相違するものである。 According to a third aspect of the present invention, the plurality of planar light emitting elements to be combined have different power supply systems.
請求項４の発明は、前記面状発光素子の全部又は一部は、前記素子基板の表裏それぞれに配置されるものである。 According to a fourth aspect of the present invention, all or part of the planar light emitting element is disposed on each of the front and back sides of the element substrate.
請求項１の発明によれば、各面状発光素子の発光層が相互にオーバーラップすることで、発光層間に隙間が生じないので、非発光となる部分を生じ難くすることができる。 According to the first aspect of the present invention, since the light emitting layers of the respective planar light emitting elements overlap each other, there is no gap between the light emitting layers, so that it is difficult to generate a portion that does not emit light.
請求項２の発明によれば、発光層の発光色が複数色の場合に発光層中の発光色間に隙間が生じるが、この隙間が生じないので、非発光となる部分を生じ難くすることができる。 According to the invention of claim 2, when the emission color of the light emitting layer is a plurality of colors, a gap is generated between the emission colors in the light emitting layer, but since this gap does not occur, it is difficult to generate a portion that does not emit light. Can do.
請求項３の発明によれば、各面状発光素子ごとに発光の制御ができるので、演出性が向上する。これにより、装置の存在感を際立たせることができる。 According to the invention of claim 3, since the light emission can be controlled for each planar light emitting element, the stage performance is improved. Thereby, the presence of the apparatus can be emphasized.
請求項４の発明によれば、１つの素子基板に２つの面状発光素子が配置されるので、用いる素子基板の数を減らすことができる。これにより、装置の厚さを薄くすることができ、かつ、部品点数が減少するので、製造コストを削減することができる。 According to the invention of claim 4, since two planar light emitting elements are arranged on one element substrate, the number of element substrates to be used can be reduced. Thereby, the thickness of the apparatus can be reduced, and the number of parts can be reduced, so that the manufacturing cost can be reduced.
本発明の一実施形態に係る表示装置について、図１乃至図４を参照して説明する。図１及び図２に示されるように、表示装置１は、第１の面状発光素子２と第２の面状発光素子３が、第１の素子基板４と第２の素子基板５上にそれぞれ配置され、第１の面状発光素子２上に第２の面状発光素子３が積み重なって形成されている。この表示装置１は、最も表側が第２の面状発光素子３となり、最も裏側が第１の素子基板４となる。また、表示装置１は、第１の面状発光素子２と第２の面状発光素子３に、それぞれ電気的に接続されている電源６を備え、電源６からの給電によって表側から発光し、矢印のピクトグラムに係る模様を表示する。 A display device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1 and FIG. 2, the display device 1 includes a first planar light emitting element 2 and a second planar light emitting element 3 on a first element substrate 4 and a second element substrate 5. The second planar light emitting elements 3 are stacked and formed on the first planar light emitting elements 2. In the display device 1, the front side is the second planar light emitting element 3, and the back side is the first element substrate 4. Further, the display device 1 includes a power source 6 electrically connected to each of the first planar light emitting element 2 and the second planar light emitting element 3, and emits light from the front side by feeding from the power source 6. The pattern related to the pictogram of the arrow is displayed.
図３及び図４に示されるように、第１の面状発光素子２は、第１の素子基板４上に陽極電極７及び陰極取り出し部８と、模様が形成されて黄色に発光する発光層１３及び透明絶縁層１０と、陰極取り出し部８と電気的に接続される陰極電極１１と、封止基板１２とがこの順に積層されて成る。陽極電極７及び陰極取り出し部８は、電気的に分離された状態で同一平面上に配置される。透明絶縁層１０は、発光層９と同一平面上において、発光層９が配置されていない箇所に配置される。第２の面状発光素子３は、発光層９と発光色及び模様が異なる発光層１３を用いる以外は、第１の面状発光素子２と同様に構成される。 As shown in FIGS. 3 and 4, the first planar light emitting device 2 includes an anode electrode 7 and a cathode extraction portion 8 on the first device substrate 4, and a light emitting layer that emits yellow light with a pattern formed thereon. 13 and the transparent insulating layer 10, the cathode electrode 11 electrically connected to the cathode take-out portion 8, and the sealing substrate 12 are laminated in this order. The anode electrode 7 and the cathode extraction part 8 are arranged on the same plane in an electrically separated state. The transparent insulating layer 10 is disposed on the same plane as the light emitting layer 9 at a location where the light emitting layer 9 is not disposed. The second planar light emitting element 3 is configured in the same manner as the first planar light emitting element 2 except that a light emitting layer 13 having a different emission color and pattern from the light emitting layer 9 is used.
第１の素子基板４は、例えば、透明でないプラスチックフィルムで形成されている。なお、表示装置１の裏側も発光させたいとき、第１の素子基板４は、透明なプラスチックフィルムで形成されていてもよい。第２の素子基板５は、例えば、透明なガラス板やプラスチックフィルム等で形成されている。 The first element substrate 4 is formed of, for example, a non-transparent plastic film. Note that when the back side of the display device 1 is desired to emit light, the first element substrate 4 may be formed of a transparent plastic film. The second element substrate 5 is formed of, for example, a transparent glass plate or a plastic film.
素子基板４、５の陽極電極７、陰極取り出し部８及び陰極電極１１は、ＩＴＯ、ＩＺＯ、ＡＺＯ、ＧＺＯ、ＡＴＯ、ＳｎＯ２等の透明導電膜で形成されている。透明絶縁層１０は、例えば、ＳｉＯ２等の透明な絶縁材料で形成されている。封止基板１２は、透明なガラス板やシリコン樹脂などで形成されている。第１の面状発光素子２の陽極電極７と陰極電極１１は、発光層９及び透明絶縁層１０を挟持し、第２の面状発光素子３の陽極電極７と陰極電極１１は、発光層１３及び透明絶縁層１０を挟持する。 The anode electrode 7, the cathode extraction part 8, and the cathode electrode 11 of the element substrates 4 and 5 are formed of a transparent conductive film such as ITO, IZO, AZO, GZO, ATO, or SnO 2 . The transparent insulating layer 10 is formed of a transparent insulating material such as SiO 2 , for example. The sealing substrate 12 is formed of a transparent glass plate or silicon resin. The anode electrode 7 and the cathode electrode 11 of the first planar light emitting element 2 sandwich the light emitting layer 9 and the transparent insulating layer 10, and the anode electrode 7 and the cathode electrode 11 of the second planar light emitting element 3 are the light emitting layer. 13 and the transparent insulating layer 10 are sandwiched.
第１の面状発光素子２の透明絶縁層１０は、矢印の模様に形成されている。第１の面状発光素子２の発光層９は、黄色の単色で発光する材料から成り、第１の面状発光素子２の透明絶縁層１０の矢印をくり抜いた模様に形成されている。 The transparent insulating layer 10 of the first planar light emitting element 2 is formed in an arrow pattern. The light emitting layer 9 of the first planar light emitting element 2 is made of a material that emits light in a single yellow color, and is formed in a pattern in which the arrow of the transparent insulating layer 10 of the first planar light emitting element 2 is hollowed out.
第２の面状発光素子３の発光層１３は、緑色の単色で発光する材料から成り、矢印の模様に形成される。第２の面状発光素子３の透明絶縁層１０は、第２の面状発光素子３の発光層１３の矢印をくり抜いた模様に形成される。表示装置１は、発光層の発光色が複数色の場合に発光層中で発光色間に生じる隙間が、単色の発光層９、１３中では生じないので、非発光となる部分を生じ難くすることができる。なお、発光層９、１３の模様や発光色は、表示装置１が表示するピクトグラムに応じて適宜選択される。 The light emitting layer 13 of the second planar light emitting element 3 is made of a material that emits light of a single green color, and is formed in an arrow pattern. The transparent insulating layer 10 of the second planar light emitting element 3 is formed in a pattern in which the arrow of the light emitting layer 13 of the second planar light emitting element 3 is cut out. In the display device 1, when the emission color of the light emitting layer is a plurality of colors, gaps between the emission colors in the light emitting layer do not occur in the single color light emitting layers 9 and 13, so that it is difficult to generate a portion that does not emit light. be able to. In addition, the pattern and light emission color of the light emitting layers 9 and 13 are appropriately selected according to the pictogram displayed on the display device 1.
図２及び図３のＣ部に示されるように、第１の面状発光素子２の発光層９は、面状発光素子２、３の面と直交する方向から見たとき、第２の面状発光素子３の発光層１３と相互にオーバーラップするように構成されている。すなわち、発光層９、１３は、発光層９の矢印枠９ａが、発光層１３の矢印枠１３ａよりも内側となるように構成されている。 2 and 3, the light emitting layer 9 of the first planar light emitting device 2 has a second surface when viewed from a direction orthogonal to the surfaces of the planar light emitting devices 2 and 3. It is comprised so that it may mutually overlap with the light emitting layer 13 of the light emitting element 3. That is, the light emitting layers 9 and 13 are configured such that the arrow frame 9 a of the light emitting layer 9 is inside the arrow frame 13 a of the light emitting layer 13.
電源６は、第１の面状発光素子２と第２の面状発光素子３の陽極電極７の端部と、陰極取り出し部８の端部とに、電力供給系統がそれぞれ相違するように電気的に接続されているので、第１の面状発光素子２と第２の面状発光素子３を別々に制御することができる。これにより、表示装置１は、第１の面状発光素子２を制御して黄色のみで点灯又は点滅、第２の面状発光素子３を制御して緑色のみで点灯又は点滅、面状発光素子２、３の両方を制御して両色で点灯又は点滅、各色を交互に点灯又は点滅させることができる。 The power source 6 is electrically connected to the end of the anode electrode 7 of the first planar light emitting element 2 and the second planar light emitting element 3 and the end of the cathode extraction unit 8 so that the power supply systems are different from each other. Therefore, the first planar light emitting element 2 and the second planar light emitting element 3 can be controlled separately. As a result, the display device 1 controls the first planar light emitting element 2 to light or blink only in yellow, controls the second planar light emitting element 3 to light or blink only in green, and the planar light emitting element. Both 2 and 3 can be controlled to light or blink in both colors, and each color can be lighted or blinked alternately.
上記のように構成された表示装置１においては、面状発光素子２、３と直交する方向から見て、各発光層９、１３が相互にオーバーラップすることで、発光層９、１３間に隙間が生じないので、非発光となる部分を生じ難くすることができる。また、各面状発光素子２、３ごとに発光の制御ができるので、演出性が向上する。これにより、装置の存在感を際立たせることができる。 In the display device 1 configured as described above, the light emitting layers 9 and 13 are overlapped with each other when viewed from the direction orthogonal to the planar light emitting elements 2 and 3. Since no gap is generated, it is possible to make it difficult to generate a portion that does not emit light. In addition, since the light emission can be controlled for each of the planar light emitting elements 2 and 3, the performance is improved. Thereby, the presence of the apparatus can be emphasized.
（変形例）
図５乃至図７は、本実施形態の変形例に係る表示装置１を示す。この変形例の表示装置１は、２つの素子基板４、５上のそれぞれに面状発光素子２、３が配置されるものに代えて、素子基板１４の表裏それぞれに面状発光素子２、３が配置されるものである。具体的には、第１の面状発光素子２の陽極電極７が、素子基板１４の裏側と接し、第２の面状発光素子３の陽極電極７が、素子基板１４の表側と接している。
(Modification)
5 to 7 show a display device 1 according to a modification of the present embodiment. In the display device 1 of this modification, instead of the surface light emitting elements 2 and 3 disposed on the two element substrates 4 and 5, respectively, the surface light emitting elements 2 and 3 on the front and back sides of the element substrate 14, respectively. Is arranged. Specifically, the anode electrode 7 of the first planar light emitting element 2 is in contact with the back side of the element substrate 14, and the anode electrode 7 of the second planar light emitting element 3 is in contact with the front side of the element substrate 14. .
また、第１の面状発光素子２の陰極電極１１は、透明でない材料であるＡｌや銀などで形成されている。第１の面状発光素子２の封止基板１２は、透明でない材料である銅などで形成されている。なお、第１の面状発光素子２の陰極電極１１及び封止基板１２は、表示装置１の裏側も発光させたいときは、透明な材料で形成されていてもよい。 Further, the cathode electrode 11 of the first planar light emitting element 2 is formed of Al or silver which is a non-transparent material. The sealing substrate 12 of the first planar light emitting element 2 is formed of copper or the like which is a material that is not transparent. Note that the cathode electrode 11 and the sealing substrate 12 of the first planar light emitting element 2 may be formed of a transparent material when the back side of the display device 1 is desired to emit light.
上記のように構成された表示装置１においては、２つの面状発光素子２、３で１つの素子基板１４が配置されるので、用いる素子基板の数を減らすことができる。これにより、装置の厚さを薄くすることができ、かつ、部品点数が減少するので、製造コストを削減することができる。 In the display device 1 configured as described above, since one element substrate 14 is disposed by the two planar light emitting elements 2 and 3, the number of element substrates to be used can be reduced. Thereby, the thickness of the apparatus can be reduced, and the number of parts can be reduced, so that the manufacturing cost can be reduced.
なお、本発明は、上記の実施形態の構成に限られず、発明の要旨を変更しない範囲で種々の変形が可能である。例えば、２つの面状発光素子が組み合わせられているものを示したが、最も裏側にある素子基板と面状発光素子以外の素子基板と面状発光素子が透明であれば、面状発光素子が３つ以上設けられているものであっても構わない。 In addition, this invention is not restricted to the structure of said embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention. For example, a combination of two planar light emitting elements is shown. However, if the element substrate and the planar light emitting element other than the most rear element substrate and the planar light emitting element are transparent, the planar light emitting element is Three or more may be provided.
１ 表示装置
２ 第１の面状発光素子（面状発光素子）
３ 第２の面状発光素子（面状発光素子）
４ 第１の素子基板（素子基板）
５ 第２の素子基板（素子基板）
７ 陽極電極
９ 発光層
１０ 透明絶縁層
１１ 陰極電極
１３ 発光層
１４ 素子基板
DESCRIPTION OF SYMBOLS 1 Display apparatus 2 1st planar light emitting element (planar light emitting element)
3 Second planar light emitting device (planar light emitting device)
4 First element substrate (element substrate)
5 Second element substrate (element substrate)
7 Anode electrode 9 Light emitting layer 10 Transparent insulating layer 11 Cathode electrode 13 Light emitting layer 14 Element substrate
Claims (4)
前記面状発光素子は、模様が形成されている発光層と、前記発光層と同一平面上において該発光層が配置されていない箇所に配置される透明絶縁層と、前記発光層及び透明絶縁層を挟持し該発光層に給電する陽極電極及び陰極電極と、を有し、
前記面状発光素子が複数組み合わせて用いられる表示装置であって、
前記組み合わせられる複数の面状発光素子の発光層は、該面状発光素子の面と直交する方向から見たとき、相互にオーバーラップするように構成されていることを特徴とする表示装置。 A planar light emitting element that displays a pattern by light emission, and an element substrate on which the planar light emitting element is disposed,
The planar light emitting element includes a light emitting layer on which a pattern is formed, a transparent insulating layer disposed on a same plane as the light emitting layer, where the light emitting layer is not disposed, and the light emitting layer and the transparent insulating layer. An anode electrode and a cathode electrode that sandwich and sandwich the power supply to the light emitting layer,
A display device in which a plurality of the planar light emitting elements are used in combination,
The light emitting layer of the said some planar light emitting element combined is comprised so that it may mutually overlap when it sees from the direction orthogonal to the surface of this planar light emitting element.
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| JP2015046364A (en) * | 2013-08-29 | 2015-03-12 | コニカミノルタ株式会社 | Method of manufacturing light-emitting panel |
| JP2017139235A (en) * | 2017-04-10 | 2017-08-10 | コニカミノルタ株式会社 | Method for manufacturing light-emitting panel |
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| CN115248507A (en) * | 2021-04-27 | 2022-10-28 | 财团法人工业技术研究院 | Switchable floating image display equipment |
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| JP2000133452A (en) * | 1998-10-28 | 2000-05-12 | Matsushita Electric Ind Co Ltd | Distributed multicolor luminescent el lamp and el lamp unit the same |
| JP2005527947A (en) * | 2002-04-19 | 2005-09-15 | ジョンソン コントロールズ オートモティブ エレクトロニクス | Thin film electroluminescent display type display device |
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2010
- 2010-02-17 JP JP2010032788A patent/JP5352494B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63244580A (en) * | 1987-03-31 | 1988-10-12 | ホ−ヤ株式会社 | Thin film el device |
| JPH1140361A (en) * | 1997-07-23 | 1999-02-12 | Mitsubishi Materials Corp | El light emitting panel and manufacture thereof |
| JP2000133452A (en) * | 1998-10-28 | 2000-05-12 | Matsushita Electric Ind Co Ltd | Distributed multicolor luminescent el lamp and el lamp unit the same |
| JP2005527947A (en) * | 2002-04-19 | 2005-09-15 | ジョンソン コントロールズ オートモティブ エレクトロニクス | Thin film electroluminescent display type display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015046364A (en) * | 2013-08-29 | 2015-03-12 | コニカミノルタ株式会社 | Method of manufacturing light-emitting panel |
| JP2017139235A (en) * | 2017-04-10 | 2017-08-10 | コニカミノルタ株式会社 | Method for manufacturing light-emitting panel |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5352494B2 (en) | 2013-11-27 |
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