JPH04234785A - Large-size display device - Google Patents
Large-size display deviceInfo
- Publication number
- JPH04234785A JPH04234785A JP41914290A JP41914290A JPH04234785A JP H04234785 A JPH04234785 A JP H04234785A JP 41914290 A JP41914290 A JP 41914290A JP 41914290 A JP41914290 A JP 41914290A JP H04234785 A JPH04234785 A JP H04234785A
- Authority
- JP
- Japan
- Prior art keywords
- display unit
- power supply
- display
- wiring
- display device
- 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.)
- Withdrawn
Links
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
［発明の目的］ [Purpose of the invention]
【０００１】0001
【産業上の利用分野】本発明は複数の表示素子により構
成された表示ユニットを縦横に整列配置してなる大型表
示装置に係り、特にその配線方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized display device in which display units constituted by a plurality of display elements are arranged in rows and columns, and more particularly to its wiring system.
【０００２】0002
【従来の技術】屋外などに設けられて画面を表示する大
型表示装置の画面は、例えば図５に示すように構成され
ている。図において、画面１は縦方向に４層で構成され
ており、各層は１０ブロックからなっている。また各ブ
ロック２は縦１０個、横８個に格子状に整列された８０
個の表示ユニット３から構成されており、各表示ユニッ
ト３は複数個の図示しない表示素子からなっている。2. Description of the Related Art The screen of a large display device installed outdoors or the like to display a screen is configured as shown in FIG. 5, for example. In the figure, screen 1 is composed of four layers in the vertical direction, and each layer consists of 10 blocks. Each block 2 has 80 blocks arranged in a grid pattern with 10 blocks vertically and 8 blocks horizontally.
Each display unit 3 includes a plurality of display elements (not shown).
【０００３】表示ユニット３にはブロック２毎に設けら
れた電源装置４から電源が供給されるが、従来は電源装
置４に一端が接続された電源配線５の他端が、図６に示
すように一方の側の表示ユニット３に接続され、以降分
岐配線６により順次隣の表示ユニット３に直列に接続さ
れて他方の側の表示ユニット３に至っていた。Power is supplied to the display unit 3 from a power supply device 4 provided for each block 2. Conventionally, one end of the power supply wiring 5 is connected to the power supply device 4, and the other end thereof is connected to the power supply device 4 as shown in FIG. The display unit 3 is connected to the display unit 3 on one side, and thereafter connected in series to the display unit 3 adjacent to the display unit 3 in sequence by the branch wiring 6 to reach the display unit 3 on the other side.
【０００４】0004
【発明が解決しようとする課題】しかしながら上記の従
来の配線方式によると、図７に示すように、電源配線５
が接続された側の表示ユニット３ａに印加される電圧は
高いが、反対側の表示ユニット３ｂに至る間に順次電圧
が降下する。従って隣接するブロック２の電源配線５が
接続された側の表示ユニット３ａに印加される電圧との
間に差が発生する。このため図８に示すように隣接する
ブロック２の境界部において画面の明るさの段差が生ず
る。However, according to the above conventional wiring system, as shown in FIG.
Although the voltage applied to the display unit 3a on the side to which is connected is high, the voltage gradually drops while reaching the display unit 3b on the opposite side. Therefore, a difference occurs between the voltage applied to the display unit 3a of the adjacent block 2 to which the power supply wiring 5 is connected. Therefore, as shown in FIG. 8, a difference in screen brightness occurs at the boundary between adjacent blocks 2.
【０００５】このような配線方式で大画面の表示装置を
構成した場合、特に図形などの表示で点灯された表示素
子がある範囲に集中したときに、画面全体を見ると明る
い部分と暗い部分との段差が生じて、表示画面の画質を
悪くするという問題があった。[0005] When a large screen display device is constructed using such a wiring method, especially when the display elements lit up to display graphics are concentrated in a certain range, when looking at the entire screen, there will be bright areas and dark areas. There is a problem in that the image quality of the display screen is deteriorated due to the difference in level.
【０００６】本発明は上記の点に鑑みてなされたもので
あり、電圧降下による画質の低下を防ぐことのできる大
型表示装置を提供することを目的とする。［発明の構成
］The present invention has been made in view of the above points, and an object of the present invention is to provide a large-sized display device that can prevent deterioration in image quality due to voltage drop. [Structure of the invention]
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、複数の表示素子により構成された表示ユ
ニットを縦横に格子状に整列配置し、電源装置より前記
表示ユニットへ電流を供給して発光させ、画面を表示す
る大型表示装置において、前記電源装置に接続された電
源配線に左右一対の分岐配線を接続し、これらの分岐配
線にそれぞれ前記表示ユニットを直列に接続したことを
特徴としている。[Means for Solving the Problems] In order to achieve the above object, the present invention arranges a display unit constituted by a plurality of display elements in a grid pattern vertically and horizontally, and supplies current to the display unit from a power supply device. In a large display device that supplies light to emit light and displays a screen, a pair of left and right branch wirings are connected to the power supply wiring connected to the power supply device, and the display unit is connected in series to each of these branch wirings. It is a feature.
【０００８】[0008]
【作用】上記の構成によると、表示ユニットに供給され
る電源電圧が画面の中央付近において高く、左右に行く
に従って徐々に低くなる。しかし隣接する表示ユニット
の対向する両端の電圧にはほとんど差がないため、その
位置における画面の明るさに段差が発生せず、画質の低
下を防ぐことができる。[Operation] According to the above structure, the power supply voltage supplied to the display unit is high near the center of the screen, and gradually decreases toward the left and right. However, since there is almost no difference in voltage between opposite ends of adjacent display units, there is no difference in the brightness of the screen at that position, and deterioration in image quality can be prevented.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図面を参照して説
明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１に本発明の一実施例を示す。図１にお
いて、図６に示す部分と対応する部分には同一符号を付
して示し、その説明を適宜省略する。１つのブロック２
は図６に示すものと同様に８０個の表示ユニット３から
構成されており、１つのブロック２に対して１つの電源
装置４が設けられている。電源装置４には左系統の電源
配線５ａと右系統の電源配線５ｂとが接続されており、
ブロック２の画面の中央付近に立ち上げて配設されてい
る。FIG. 1 shows an embodiment of the present invention. In FIG. 1, parts corresponding to those shown in FIG. 6 are denoted by the same reference numerals, and the explanation thereof will be omitted as appropriate. one block 2
is composed of 80 display units 3 like the one shown in FIG. 6, and one power supply device 4 is provided for one block 2. A left power supply wiring 5a and a right power supply wiring 5b are connected to the power supply device 4.
It is placed upright near the center of the block 2 screen.
【００１１】電源配線５ａ，５ｂにはそれぞれ１０本の
分岐配線６の一端が接続されており、これらの分岐配線
６の他端にはそれぞれ同じ高さにある４個の表示ユニッ
ト３が直列に接続されている。One end of ten branch wiring lines 6 is connected to each of the power supply wiring lines 5a and 5b, and four display units 3 at the same height are connected in series to the other ends of these branch wiring lines 6. It is connected.
【００１２】次に本実施例の作用を説明する。電源装置
４から電源配線５及び分岐配線６を介して表示ユニット
３に供給される電圧は、図２に示すように画面の中央付
近を中心として左右に行くに従って徐々に低くなる。従
って図３に示すように表示ユニット３の発光輝度も中央
が高く両端に行く程低くなる。しかし隣接するブロック
２の両端の対向する表示ユニット３に印加される電圧は
ほぼ等しくなるため、その間の明るさの段差はほとんど
ない。従って明るさが連続的に変化するので違和感がな
く、大画面の表示装置であっても電圧降下による画質の
低下を防ぐことができる。Next, the operation of this embodiment will be explained. As shown in FIG. 2, the voltage supplied from the power supply device 4 to the display unit 3 via the power supply wiring 5 and the branch wiring 6 gradually decreases toward the left and right around the center of the screen. Therefore, as shown in FIG. 3, the luminance of the display unit 3 is high at the center and decreases toward both ends. However, since the voltages applied to opposing display units 3 at both ends of adjacent blocks 2 are approximately equal, there is almost no difference in brightness between them. Therefore, since the brightness changes continuously, there is no sense of discomfort, and even in a large screen display device, deterioration in image quality due to voltage drop can be prevented.
【００１３】図４に本発明の他の実施例を示す。本実施
例は電源配線５と分岐配線６との間に複数個の分電盤７
を設け、分電盤７にそれぞれ左系統の分岐配線６ａと右
系統の分岐配線６ｂの一端を接続し、さらに分岐配線６
ａ，６ｂに表示ユニット３を直列に接続したものである
。FIG. 4 shows another embodiment of the present invention. In this embodiment, a plurality of distribution boards 7 are installed between the power supply wiring 5 and the branch wiring 6.
, and connect one end of the left branch wiring 6a and the right branch wiring 6b to the distribution board 7, and further connect the branch wiring 6a to the distribution board 7.
A display unit 3 is connected in series to a and 6b.
【００１４】本実施例によれば、左系統の電源配線５ａ
及び右系統の電源配線５ｂにそれぞれ接続される分岐配
線６を、複数箇所においてさらに左右方向に分岐させる
ので、分岐配線の端末に接続される表示ユニット３の電
圧低下を減少させることができる。According to this embodiment, the left power supply wiring 5a
Since the branch wiring 6 connected to the power supply wiring 5b of the right system and the right system is further branched in the left-right direction at a plurality of locations, it is possible to reduce the voltage drop of the display unit 3 connected to the terminal of the branch wiring.
【００１５】上記電源配線５は電線でも銅バーによるダ
クト配線でもよい。The power supply wiring 5 may be an electric wire or a duct wiring made of copper bars.
【００１６】なお、上記実施例に示したブロック２の数
及び表示ユニット３の数は一例を示したものであり、こ
れらの数に限定されるものではない。Note that the number of blocks 2 and the number of display units 3 shown in the above embodiment are merely examples, and are not limited to these numbers.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
表示ユニットブロックの下部に設けられた電源装置に電
源配線を接続し、この電源配線に左右一対の分岐配線を
接続し、さらにこれらの分岐配線にそれぞれ表示ユニッ
トを直列に接続したので、隣接するブロックの両端の対
向する表示ユニット間の電圧差が殆んどなくなり、電圧
降下による画質の低下を防ぐことができる。[Effects of the Invention] As explained above, according to the present invention,
A power supply wiring was connected to the power supply device provided at the bottom of the display unit block, a pair of left and right branch wiring was connected to this power supply wiring, and a display unit was connected in series to each of these branch wirings, so that adjacent blocks The voltage difference between opposing display units at both ends of the display unit is almost eliminated, and deterioration in image quality due to voltage drop can be prevented.
【図１】本発明の一実施例による配線方式を示す説明図
。FIG. 1 is an explanatory diagram showing a wiring system according to an embodiment of the present invention.
【図２】同じく表示ユニットの電圧分布を示す線図。FIG. 2 is a diagram showing the voltage distribution of the display unit.
【図３】同じく表示ユニットの画面の明るさの分布を示
す線図。FIG. 3 is a diagram showing the brightness distribution of the screen of the display unit.
【図４】本発明の他の実施例による配線方式を示す説明
図。FIG. 4 is an explanatory diagram showing a wiring system according to another embodiment of the present invention.
【図５】従来の大型表示装置の画面を構成する説明図。FIG. 5 is an explanatory diagram configuring a screen of a conventional large display device.
【図６】従来の大型表示装置の配線方式を示す説明図。FIG. 6 is an explanatory diagram showing a wiring system of a conventional large display device.
【図７】同じく表示ユニットの電圧分布を示す線図。FIG. 7 is a diagram showing the voltage distribution of the display unit.
【図８】同じく表示ユニットの画面の明るさの分布を示
す線図。FIG. 8 is a diagram showing the brightness distribution of the screen of the display unit.
１ 画面 ３ 表
示ユニット４ 電源装置 ５
電源配線６ 分岐配線1 Screen 3 Display unit 4 Power supply device 5
Power supply wiring 6 Branch wiring
Claims (2)
ユニットを縦横に格子状に整列配置し、電源装置より前
記表示ユニットへ電流を供給して発光させ、画面を表示
する大型表示装置において、前記電源装置に接続された
電源配線に左右一対の分岐配線を接続し、これらの分岐
配線にそれぞれ前記表示ユニットを直列に接続したこと
を特徴とする大型表示装置。1. A large-sized display device in which a display unit constituted by a plurality of display elements is arranged in a grid pattern vertically and horizontally, and a power supply supplies current to the display unit to cause it to emit light to display a screen. A large display device characterized in that a pair of left and right branch wirings are connected to a power supply wiring connected to a power supply device, and the display unit is connected in series to each of these branch wirings.
示ユニットのブロックの下部に配置したことを特徴とす
る請求項１記載の大型表示装置。2. The large-sized display device according to claim 1, wherein the power supply device is disposed below the blocks of the plurality of display units arranged in an array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41914290A JPH04234785A (en) | 1990-12-29 | 1990-12-29 | Large-size display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41914290A JPH04234785A (en) | 1990-12-29 | 1990-12-29 | Large-size display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04234785A true JPH04234785A (en) | 1992-08-24 |
Family
ID=18526818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41914290A Withdrawn JPH04234785A (en) | 1990-12-29 | 1990-12-29 | Large-size display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04234785A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007299003A (en) * | 2000-05-12 | 2007-11-15 | Semiconductor Energy Lab Co Ltd | Display device |
| US8102347B2 (en) | 2004-12-06 | 2012-01-24 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8125415B2 (en) | 2000-05-12 | 2012-02-28 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8446348B2 (en) | 2003-06-13 | 2013-05-21 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8610645B2 (en) | 2000-05-12 | 2013-12-17 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
-
1990
- 1990-12-29 JP JP41914290A patent/JPH04234785A/en not_active Withdrawn
Cited By (25)
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|---|---|---|---|---|
| US9536468B2 (en) | 2000-05-12 | 2017-01-03 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| JP2017021362A (en) * | 2000-05-12 | 2017-01-26 | 株式会社半導体エネルギー研究所 | Display divice |
| US9013377B2 (en) | 2000-05-12 | 2015-04-21 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8125415B2 (en) | 2000-05-12 | 2012-02-28 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US10867557B2 (en) | 2000-05-12 | 2020-12-15 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US10354589B2 (en) | 2000-05-12 | 2019-07-16 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| JP2018151653A (en) * | 2000-05-12 | 2018-09-27 | 株式会社半導体エネルギー研究所 | EL display device |
| JP2018025806A (en) * | 2000-05-12 | 2018-02-15 | 株式会社半導体エネルギー研究所 | Display divice |
| US8610645B2 (en) | 2000-05-12 | 2013-12-17 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| JP2014067056A (en) * | 2000-05-12 | 2014-04-17 | Semiconductor Energy Lab Co Ltd | Display device |
| JP4637873B2 (en) * | 2000-05-12 | 2011-02-23 | 株式会社半導体エネルギー研究所 | Display device |
| JP2015034992A (en) * | 2000-05-12 | 2015-02-19 | 株式会社半導体エネルギー研究所 | Display device |
| JP2007299003A (en) * | 2000-05-12 | 2007-11-15 | Semiconductor Energy Lab Co Ltd | Display device |
| JP2012078841A (en) * | 2000-05-12 | 2012-04-19 | Semiconductor Energy Lab Co Ltd | Display device |
| US9514670B2 (en) | 2000-05-12 | 2016-12-06 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| JP2016027427A (en) * | 2000-05-12 | 2016-02-18 | 株式会社半導体エネルギー研究所 | Display divice |
| US9276018B2 (en) | 2003-06-13 | 2016-03-01 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8749461B2 (en) | 2003-06-13 | 2014-06-10 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US9905582B2 (en) | 2003-06-13 | 2018-02-27 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8446348B2 (en) | 2003-06-13 | 2013-05-21 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US9030389B2 (en) | 2003-06-13 | 2015-05-12 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8547315B2 (en) | 2004-12-06 | 2013-10-01 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8102347B2 (en) | 2004-12-06 | 2012-01-24 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US9123625B2 (en) | 2004-12-06 | 2015-09-01 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
| US8228277B2 (en) | 2004-12-06 | 2012-07-24 | Semiconductor Energy Laboratory Co., Ltd. | Display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19980312 |