JP2003092195A - Led display device - Google Patents
Led display deviceInfo
- Publication number
- JP2003092195A JP2003092195A JP2001283945A JP2001283945A JP2003092195A JP 2003092195 A JP2003092195 A JP 2003092195A JP 2001283945 A JP2001283945 A JP 2001283945A JP 2001283945 A JP2001283945 A JP 2001283945A JP 2003092195 A JP2003092195 A JP 2003092195A
- Authority
- JP
- Japan
- Prior art keywords
- led
- converter
- voltage
- display device
- led display
- 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
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はＬＥＤ（Ｌｉｇｈｔ
Ｅｍｉｔｉｎｇ Ｄｉｏｄｅ）を用いて画像等を表示
するＬＥＤ表示装置に関するものである。TECHNICAL FIELD The present invention relates to an LED (Light).
The present invention relates to an LED display device that displays an image or the like by using an emitting diode.
【０００２】[0002]
【従来の技術】図４は従来のＬＥＤ表示装置を示す構成
説明図である。すなわち、ＬＥＤ表示装置１１は複数個
のＬＥＤモジュール１２１，１２２，……が同一平面上
に配設されて構成され、各ＬＥＤモジュール１２１，１
２２，……はそれぞれ画素としてＬＥＤが複数個縦にａ
個、横にｂ個マトリクス状に配置されたＬＥＤパネル、
前記ＬＥＤパネルのＬＥＤを駆動するＬＥＤ駆動回路、
および前記ＬＥＤ駆動回路を制御するＬＥＤモジュール
制御回路より構成される。前記各ＬＥＤモジュール１２
１，１２２，……には、一般に複数個のＬＥＤを駆動す
る電圧と、これらを制御する回路の電圧が必要である。
これらの電圧に対応したモジュール内の入力端子を１３
１，１３２，……，１３ｎとすると、各モジュール間の
同じ電圧に相当する端子１３ｉ（ｉ＝１，２，……，
ｎ）は相互に接続され、その電圧を供給する共通のＡＣ
−ＤＣ変換装置１４ｉ（ｉ＝１，２，……，ｎ）の出力
端子に接続されている。2. Description of the Related Art FIG. 4 is an explanatory diagram showing a structure of a conventional LED display device. That is, the LED display device 11 is constructed by arranging a plurality of LED modules 12 1 , 12 2 , ... On the same plane, and each LED module 12 1 , 1 2.
Each of 2 2 , ... Has a plurality of LEDs vertically as pixels.
LED panels arranged side by side in a matrix of b
An LED drive circuit for driving the LEDs of the LED panel,
And an LED module control circuit for controlling the LED drive circuit. Each of the LED modules 12
1 1 , 12 2 , ... Generally requires a voltage for driving a plurality of LEDs and a voltage of a circuit for controlling them.
Set the input terminals in the module corresponding to these voltages to 13
1 , 13 2 , ..., 13 n , the terminals 13i (i = 1, 2, ...,
n) are common ACs that are connected to each other and supply their voltage
It is connected to the output terminal of the DC converter 14i (i = 1, 2, ..., N).
【０００３】前記ＡＣ−ＤＣ変換装置１４ｉ（ｉ＝１，
２，……，ｎ）の入力端子は共通にして、商用電源の交
流１００Ｖまたは交流２００Ｖに接続されている。すな
わち、前記ＡＣ−ＤＣ変換装置１４ｉ（ｉ＝１，２，…
…，ｎ）は商用電源の交流１００Ｖまたは交流２００Ｖ
から、各モジュール１２１，１２２，……の必要とする
ＬＥＤの駆動電圧あるいは制御回路のドライブ電圧を各
モジュール内の対応する入力端子１３ｉ（ｉ＝１，２，
……，ｎ）を経由して供給するものである。The AC-DC converter 14i (i = 1,
The input terminals of 2, ..., N) are commonly connected to AC 100V or AC 200V of a commercial power source. That is, the AC-DC converter 14i (i = 1, 2, ...
…, N) is AC100V or AC200V of commercial power source
, The drive voltage of the LED or the drive voltage of the control circuit required by each module 12 1 , 12 2 , ... Is set to the corresponding input terminal 13i (i = 1, 2,
..., n).
【０００４】図５は従来の大規模表示装置を示す構成説
明図である。すなわち、図４のＬＥＤ表示装置１１が複
数個縦にｎ個、横にｍ個マトリクス状に配設されて構成
される。FIG. 5 is a structural explanatory view showing a conventional large-scale display device. That is, a plurality of LED display devices 11 shown in FIG. 4 are arranged vertically in a matrix and m in a matrix.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
ＬＥＤ表示装置では、ｎ個のＡＣ−ＤＣ変換装置（１４
１〜１４ｎ）からｎ種類の電圧を各モジュール１２１，
１２２，……に対してｎ＋１本づつ配線されることにな
り、配線が煩雑化する欠点があった。また、ＡＣ−ＤＣ
変換装置１４１〜１４ｎから各ＬＥＤモジュール１
２１，１２２，……への供給電圧はモジュールが必要と
する電圧が１０Ｖ以下で低いため、直流低電圧給電とな
り大電流を流さなければならず、さらに、直流低電圧給
電のため、配線を低抵抗にしなければならず、太い配線
で導電性の良い配線にする必要があるため、特殊な配線
材料を必要とする欠点があった。However, the conventional
In the LED display device, n AC-DC conversion devices (14
1~ 14n) To n types of voltage for each module 121，
12Two, ............ n + 1 wires are to be connected.
However, the wiring is complicated. In addition, AC-DC
Converter 141~ 14nFrom each LED module 1
Two1, 12Two, Modules are needed to supply voltage to
Since the voltage to be applied is low at 10 V or less, DC low voltage power supply is not possible.
A large amount of current must be applied, and in addition, DC low voltage
The wiring must be low resistance because of the
Special wiring because it is necessary to make wiring with good conductivity.
There was a drawback that required material.
【０００６】本発明は上記の事情に鑑みてなされたもの
で、直流高圧給電により低電流化し得、配線を簡素化し
システム的な構成が容易なＬＥＤ表示装置を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an LED display device which can reduce a current by DC high voltage power supply, simplify wiring, and have a systematic configuration.
【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
に本発明のＬＥＤ表示装置は、商用の交流電源からＬＥ
Ｄ駆動電圧より高い直流電圧（約ＤＣ２００Ｖ〜ＤＣ４
００Ｖ）に変換するＡＣ−ＤＣ変換装置と、前記ＡＣ−
ＤＣ変換装置で変換された直流電圧が供給され、ＬＥＤ
駆動電圧の直流電圧を出力するＤＣ−ＤＣコンバータと
を具備することを特徴とするものである。In order to achieve the above object, the LED display device of the present invention is provided with an LE from a commercial AC power source.
DC voltage higher than D drive voltage (approximately DC200V to DC4
AC-DC conversion device for converting into
The DC voltage converted by the DC converter is supplied to the LED
And a DC-DC converter that outputs a DC voltage of a driving voltage.
【０００８】また本発明は、前記ＬＥＤ表示装置におい
て、ＤＣ−ＤＣコンバータは、モジュールが必要とする
ＬＥＤ駆動電圧及び制御回路駆動電圧を出力することを
特徴とするものである。The present invention is also characterized in that, in the LED display device, the DC-DC converter outputs an LED drive voltage and a control circuit drive voltage required by the module.
【０００９】また本発明は、前記ＬＥＤ表示装置におい
て、ＡＣ−ＤＣ変換装置として、ブーストアップ型力率
改善回路を用いることを特徴とするものである。The present invention is also characterized in that, in the LED display device, a boost-up type power factor correction circuit is used as an AC-DC converter.
【００１０】また本発明は、前記ＬＥＤ表示装置におい
て、ＡＣ−ＤＣ変換装置として、力率改善用チョークコ
イル及び整流回路を用いることを特徴とするものであ
る。The present invention is also characterized in that, in the LED display device, a power factor improving choke coil and a rectifying circuit are used as an AC-DC converter.
【００１１】また本発明のＬＥＤ表示装置は、前記ＬＥ
Ｄモジュールが複数個配設され、各ＬＥＤモジュールに
共通してＡＣ−ＤＣ変換装置が設けられることを特徴と
するものである。Further, the LED display device of the present invention is the above LE.
A plurality of D modules are arranged, and an AC-DC converter is provided commonly to each LED module.
【００１２】[0012]
【発明の実施の形態】以下図面を参照して本発明の実施
形態例を詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.
【００１３】図１は本発明の実施形態例に係るＬＥＤ表
示装置を示す構成説明図である。すなわち、ＬＥＤ表示
装置２１は複数個のＬＥＤモジュール２２１，２２２，
……が同一平面上に配設されて構成される。前記各ＬＥ
Ｄモジュール２２１，２２２，……にはそれぞれ対応し
てＤＣ−ＤＣコンバータ２３１，２３２，……が内蔵さ
れ、各ＤＣ−ＤＣコンバータ２３１，２３２，……の出
力端子にはモジュールが必要とするＬＥＤの駆動電圧及
び制御回路駆動電圧に対応した出力端子２４１〜２４ｎ
が設けられる。前記各ＤＣ−ＤＣコンバータ２３１，２
３２，……の入力端子は共通にしてＡＣ−ＤＣ変換装置
２５の出力端子に接続され、ＡＣ−ＤＣ変換装置２５の
入力端子は商用電源の交流１００Ｖまたは交流２００Ｖ
に接続される。FIG. 1 is a structural explanatory view showing an LED display device according to an embodiment of the present invention. That is, the LED display device 21 includes a plurality of LED modules 22 1 , 22 2 ,
... are arranged on the same plane. Each LE
D module 22 1, 22 2, DC-DC converter 23 1 in correspondence to ..., 23 2, ... are built, the DC-DC converters 23 1, 23 2, to the output terminal of the ...... is Output terminals 24 1 to 24 n corresponding to LED drive voltage and control circuit drive voltage required by the module
Is provided. Each of the DC-DC converters 23 1 , 2
3 2, input terminals of the ...... is connected to the output terminal of the AC-DC converter 25 to the common input terminal of the AC-DC converter 25 of the commercial power supply AC 100V or AC 200V
Connected to.
【００１４】すなわち、ＡＣ−ＤＣ変換装置２５は、商
用電源の交流１００Ｖまたは交流２００Ｖを直流２００
Ｖ〜４００Ｖに変換して各ＤＣ−ＤＣコンバータ２
３１，２３２，……の入力端子に供給する。各ＤＣ−Ｄ
Ｃコンバータ２３１，２３２，……は、入力された直流
２００Ｖ〜４００Ｖを各モジュールが必要とするＬＥＤ
の駆動電圧や制御回路の駆動電圧に変換し対応する端子
２４１〜２４ｎに出力する。That is, the AC-DC converter 25 converts 100 V AC or 200 V AC of a commercial power source to 200 DC.
Each DC-DC converter 2 by converting to V-400V
Supply to the input terminals of 3 1 , 23 2 , .... Each DC-D
The C converters 23 1 , 23 2 , ... Are LEDs that require 200 V to 400 V DC input to each module.
Drive voltage of the control circuit or the drive voltage of the control circuit and output to the corresponding terminals 24 1 to 24 n .
【００１５】図２は図１のＡＣ−ＤＣ変換装置２５の具
体例を示す構成説明図である。図２（ａ）はＡＣ−ＤＣ
変換装置２５をブーストアップ型力率改善回路２６で構
成した例であり、商用電源の交流１００Ｖを約直流３７
０Ｖに変換する。図２（ｂ）はＡＣ−ＤＣ変換装置２５
を力率改善用チョークコイル２７及び倍電圧整流回路２
８で構成した例であり、商用電源の交流１００Ｖを約直
流３００Ｖに変換する。図２（ｃ）はＡＣ−ＤＣ変換装
置２５を３相の力率改善用チョークコイル２９及び３相
整流回路３０で構成した例であり、商用電源の３相交流
２００Ｖを約直流３００Ｖに変換する。FIG. 2 is a structural explanatory view showing a concrete example of the AC-DC converter 25 of FIG. Fig.2 (a) is AC-DC
This is an example in which the conversion device 25 is configured by a boost-up type power factor correction circuit 26.
Convert to 0V. FIG. 2B shows an AC-DC converter 25.
Power factor improving choke coil 27 and voltage doubler rectifier circuit 2
In this example, the AC power of 100 V of the commercial power source is converted to about DC 300 V. FIG. 2C shows an example in which the AC-DC converter 25 is composed of a three-phase power factor improving choke coil 29 and a three-phase rectifying circuit 30. Three-phase AC 200V of a commercial power source is converted to about DC 300V. .
【００１６】図３は本発明の実施形態例に係るＬＥＤ表
示装置の具体例を示す構成説明図である。すなわち、Ｌ
ＥＤ表示装置は複数個のＬＥＤモジュール２２１，２２
２，……が同一平面上に配設されて構成される。前記各
ＬＥＤモジュール２２１，２２２，……にはそれぞれ対
応してＤＣ−ＤＣコンバータ２３１，２３２，……、画
素としてＬＥＤが複数個縦にａ個、横にｂ個マトリクス
状に配置されたＬＥＤパネル３１１，３１２……、前記
ＬＥＤパネル３１１，３１２……のＬＥＤを駆動するＬ
ＥＤ駆動回路３２１，３２２……、および前記ＬＥＤ駆
動回路３２１，３２２……を制御するＬＥＤモジュール
制御回路３３１，３３２……が内蔵される。前記ＬＥＤ
パネル３１１，３１２……にはそれぞれ対応したＤＣ−
ＤＣコンバータ２３１，２３２，……から各ＬＥＤを駆
動するために必要な直流電圧が供給される。前記ＬＥＤ
駆動回路３２１，３２２……は前記ＬＥＤモジュール制
御回路３３１，３３２……でＯＮ−ＯＦＦ制御される定
電流回路で前記ＬＥＤモジュール制御回路３３１，３３
２……にはそれぞれ対応したＤＣ−ＤＣコンバータ２３
１，２３２，……から電源電圧が供給される。前記各Ｄ
Ｃ−ＤＣコンバータ２３１，２３２，……の入力端子は
共通にしてＡＣ−ＤＣ変換装置２５の出力端子に接続さ
れ、ＡＣ−ＤＣ変換装置２５の入力端子は商用電源の交
流１００Ｖまたは交流２００Ｖに接続される。前記ＬＥ
Ｄモジュール制御回路３３１，３３２……は共通にして
画像制御部３４に接続され、画像制御部３４は画像制御
回路３５及び電源回路３６より構成され、電源回路３６
は商用電源の交流１００Ｖまたは交流２００Ｖに接続さ
れる。前記画像制御回路３５は画像信号が入力され、表
示データ及び制御信号をＬＥＤモジュール制御回路３３
１，３３２……に供給する。FIG. 3 is a structural explanatory view showing a specific example of the LED display device according to the embodiment of the present invention. That is, L
The ED display device has a plurality of LED modules 22 1 , 22.
2 , ... Are arranged on the same plane. The LED modules 22 1 , 22 2 , ... Corresponding to the DC-DC converters 23 1 , 23 2 , .., a plurality of LEDs as pixels are arranged in a matrix in the vertical direction and b in the horizontal direction. LED panel 31, which is 1, 31 2 ..., to drive LED of the LED panel 31 1, 31 2 ... L
The ED drive circuits 32 1 , 32 2, ... And the LED module control circuits 33 1 , 33 2, ... For controlling the LED drive circuits 32 1 , 32 2 ,. The LED
The panel 31 1, 31 2 ...... respectively corresponding DC-
The DC voltage necessary for driving each LED is supplied from the DC converters 23 1 , 23 2 , .... The LED
Driving circuit 32 1, 32 2 ...... in the a constant current circuit to be ON-OFF controlled by the LED module control circuit 33 1, 33 2 ...... LED module control circuit 33 1, 33
2 ... DC-DC converter 23 corresponding to each
The power supply voltage is supplied from 1 , 23 2 , .... Each D
The input terminals of the C-DC converters 23 1 , 23 2 , ... Are commonly connected to the output terminal of the AC-DC converter 25, and the input terminal of the AC-DC converter 25 is 100 V AC or 200 V AC of commercial power. Connected to. The LE
The D module control circuits 33 1 , 33 2, ... Are commonly connected to the image control unit 34, and the image control unit 34 is composed of an image control circuit 35 and a power supply circuit 36.
Is connected to a commercial power source of AC 100V or AC 200V. The image control circuit 35 receives the image signal and outputs the display data and the control signal to the LED module control circuit 33.
1 , 33 2 ...
【００１７】以上のように本発明では、各ＬＥＤモジュ
ール２２１，２２２，……にはそれぞれ対応してＤＣ−
ＤＣコンバータ２３１，２３２，……が内蔵され、各Ｄ
Ｃ−ＤＣコンバータ２３１，２３２，……は、ＡＣ−Ｄ
Ｃ変換装置２５から入力された直流２００Ｖ〜４００Ｖ
を各ＬＥＤを駆動する電圧及びＬＥＤモジュール制御回
路の駆動電圧に変換し各対応する端子２４１〜２４ｎに
出力するため、ＡＣ−ＤＣ変換装置２５から各ＬＥＤモ
ジュール２２１，２２２，……に直流高圧給電となり、
電流を軽減することができる。また、ＡＣ−ＤＣ変換装
置２５から各ＬＥＤモジュール２２１，２２２，……に
単電圧給電となるため、配線を簡素化することができ
る。さらに、高電圧給電により電流が軽減するため太く
導電性のよい配線が必要なくなり、且つ配線の簡素化に
よりシステム構成を容易にすることができる。As described above, according to the present invention, the LED modules 22 1 , 22 2 , ...
DC converters 23 1 , 23 2 , ... Are built-in, and each D
The C-DC converters 23 1 , 23 2 , ... Are AC-D.
DC 200V to 400V input from the C converter 25
Is converted to a voltage for driving each LED and a driving voltage for the LED module control circuit and output to the corresponding terminals 24 1 to 24 n , the AC-DC conversion device 25 outputs each LED module 22 1 , 22 2 , ... DC high voltage power supply,
The current can be reduced. Further, since a single voltage is supplied from the AC-DC converter 25 to each of the LED modules 22 1 , 22 2 , ..., Wiring can be simplified. Further, since the current is reduced by the high-voltage power supply, thick and highly conductive wiring is not required, and the system configuration can be facilitated by simplifying the wiring.
【００１８】尚、図１のＬＥＤ表示装置２１を複数個縦
にｎ個、横にｍ個マトリクス状に配設することにより、
さらに大規模な表示装置を構成することができる。It should be noted that by arranging a plurality of the LED display devices 21 of FIG. 1 in a matrix of n vertically and m horizontally,
Further, a large-scale display device can be constructed.
【００１９】また、本発明の応用例として図６に示すよ
うに、ＤＣ／ＤＣコンバータの出力電力とＬＥＤパネル
の消費電力のバランス関係によっては、１つのＤＣ／Ｄ
Ｃコンバータが複数個のＬＥＤパネルの対応する端子に
必要な電圧を供給するような構成も考えられる。Further, as an application example of the present invention, as shown in FIG. 6, depending on the balance relationship between the output power of the DC / DC converter and the power consumption of the LED panel, one DC / D
A configuration in which the C converter supplies the required voltage to the corresponding terminals of the plurality of LED panels is also conceivable.
【００２０】本発明は、赤色ＬＥＤ、緑色ＬＥＤ、及び
青色ＬＥＤを必要とするフルカラーＬＥＤ表示装置に適
用すると、システム構成が非常にシンプルとなり大きな
効果をあげることが出来るが、モノカラーＬＥＤ表示装
置においてもそれなりの効果が期待できる。When the present invention is applied to a full-color LED display device which requires a red LED, a green LED and a blue LED, the system configuration becomes very simple and a great effect can be obtained. Can expect some effect.
【００２１】[0021]
【発明の効果】以上述べたように本発明によれば、直流
高圧給電により低電流化し得、配線を簡素化し得るＬＥ
Ｄ表示装置を提供することができる。As described above, according to the present invention, it is possible to reduce the current by DC high voltage power supply and simplify the wiring.
A D display device can be provided.
【図１】本発明の実施形態例に係るＬＥＤ表示装置を示
す構成説明図である。FIG. 1 is a configuration explanatory view showing an LED display device according to an embodiment of the present invention.
【図２】図１のＡＣ−ＤＣ変換装置の具体例を示す構成
説明図である。FIG. 2 is a configuration explanatory view showing a specific example of the AC-DC conversion device of FIG.
【図３】本発明の実施形態例に係るＬＥＤ表示装置の具
体例を示す構成説明図である。FIG. 3 is a configuration explanatory view showing a specific example of the LED display device according to the embodiment of the present invention.
【図４】従来のＬＥＤ表示装置を示す構成説明図であ
る。FIG. 4 is a structural explanatory view showing a conventional LED display device.
【図５】従来の大規模表示装置を示す構成説明図であ
る。FIG. 5 is a configuration explanatory view showing a conventional large-scale display device.
【図６】本発明の実施形態例に係るＬＥＤ表示装置の応
用例を示す構成説明図である。FIG. 6 is a configuration explanatory view showing an application example of the LED display device according to the embodiment of the present invention.
２１ ＬＥＤ表示装置 ２２１，２２２ ＬＥＤモジュール ２３１，２３２ ＤＣ−ＤＣコンバータ ２５ ＡＣ−ＤＣ変換装置21 LED display device 22 1 , 22 2 LED module 23 1 , 23 2 DC-DC converter 25 AC-DC conversion device
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3K073 AA16 AA48 AA52 AB01 AB03 AB04 CD00 CD05 CG51 CG53 CG54 CJ17 CL11 CL13 CL15 5C080 AA07 BB05 CC03 CC07 DD23 DD30 JJ02 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 3K073 AA16 AA48 AA52 AB01 AB03 AB04 CD00 CD05 CG51 CG53 CG54 CJ17 CL11 CL13 CL15 5C080 AA07 BB05 CC03 CC07 DD23 DD30 JJ02
Claims (5)
十分高い直流電圧に変換するＡＣ−ＤＣ変換装置と、 前記ＡＣ−ＤＣ変換装置で変換された直流電圧が供給さ
れ、ＬＥＤ駆動電圧の直流電圧を出力するＤＣ−ＤＣコ
ンバータとを具備することを特徴とするＬＥＤ表示装
置。1. An AC-DC converter that converts a commercial AC power supply into a DC voltage that is sufficiently higher than an LED drive voltage, and the DC voltage converted by the AC-DC converter is supplied, and the DC voltage of the LED drive voltage is supplied. And a DC-DC converter for outputting the LED.
緑色ＬＥＤ、青色ＬＥＤおよび制御回路に対応した直流
電圧を出力することを特徴とする請求項１記載のＬＥＤ
表示装置。2. The DC-DC converter is a red LED,
2. The LED according to claim 1, which outputs a DC voltage corresponding to the green LED, the blue LED and the control circuit.
Display device.
ップ型力率改善回路を用いることを特徴とする請求項１
又は２記載のＬＥＤ表示装置。3. A boost-up type power factor correction circuit is used as the AC-DC converter.
Alternatively, the LED display device according to item 2.
チョークコイル及び整流回路を用いることを特徴とする
請求項１又は２記載のＬＥＤ表示装置。4. The LED display device according to claim 1, wherein a power factor improving choke coil and a rectifier circuit are used as the AC-DC converter.
ＥＤ表示装置が複数個配設され、各ＬＥＤモジュールに
共通してＡＣ−ＤＣ変換装置が設けられることを特徴と
するＬＥＤ表示装置。5. L according to any one of claims 1 to 4.
An LED display device comprising a plurality of ED display devices, wherein an AC-DC converter is provided in common to each LED module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283945A JP2003092195A (en) | 2001-09-18 | 2001-09-18 | Led display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283945A JP2003092195A (en) | 2001-09-18 | 2001-09-18 | Led display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003092195A true JP2003092195A (en) | 2003-03-28 |
Family
ID=19107354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001283945A Pending JP2003092195A (en) | 2001-09-18 | 2001-09-18 | Led display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003092195A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005043888A (en) * | 2003-07-22 | 2005-02-17 | Barco Nv | Method for controlling organic light-emitting diode display and display applying the method |
| JP2005257790A (en) * | 2004-03-09 | 2005-09-22 | Olympus Corp | Illuminator and image projection device using the same |
| US20080002103A1 (en) * | 2006-06-29 | 2008-01-03 | Sang Yun Lee | Liquid crystal display driving system having light emitting diodes |
| JP2010516016A (en) * | 2006-10-06 | 2010-05-13 | キュー テクノロジー，インコーポレイテッド | Multiple arrangement light sources to achieve uniform or gradient illumination |
| JP2011505660A (en) * | 2007-11-30 | 2011-02-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Optical output device |
| JP2011508249A (en) * | 2007-12-11 | 2011-03-10 | アドバンス・ディスプレイ・テクノロジーズ・インコーポレーテッド | Large display system |
| JP2011510334A (en) * | 2007-12-11 | 2011-03-31 | アドバンス・ディスプレイ・テクノロジーズ・インコーポレーテッド | Large display data and power distribution system and method |
| WO2013180500A1 (en) * | 2012-06-01 | 2013-12-05 | 서울반도체 주식회사 | Display device comprising led backlight, and power supply apparatus and power supply method therefor |
| US20150194609A1 (en) * | 2012-07-03 | 2015-07-09 | Canon Kabushiki Kaisha | Dibenzoxanthene compound, organic light-emitting device, display, image information processor, and image-forming apparatus |
| US20150212450A1 (en) * | 2012-08-07 | 2015-07-30 | Canon Kabushiki Kaisha | Novel fused polycyclic compound and organic light-emitting device, display apparatus, image information processing apparatus, lighting system, and image forming apparatus having the compound |
| US9378671B2 (en) | 2007-12-11 | 2016-06-28 | Adti Media Llc | Large scale LED display |
| US10248372B2 (en) | 2013-12-31 | 2019-04-02 | Ultravision Technologies, Llc | Modular display panels |
| US10373535B2 (en) | 2013-12-31 | 2019-08-06 | Ultravision Technologies, Llc | Modular display panel |
| JP2020518866A (en) * | 2017-03-22 | 2020-06-25 | １０６４４１３７ カナダ インコーポレイテッド | LED device having one or more communication units and method of use thereof |
| US10706770B2 (en) | 2014-07-16 | 2020-07-07 | Ultravision Technologies, Llc | Display system having module display panel with circuitry for bidirectional communication |
-
2001
- 2001-09-18 JP JP2001283945A patent/JP2003092195A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005043888A (en) * | 2003-07-22 | 2005-02-17 | Barco Nv | Method for controlling organic light-emitting diode display and display applying the method |
| JP2005257790A (en) * | 2004-03-09 | 2005-09-22 | Olympus Corp | Illuminator and image projection device using the same |
| US20080002103A1 (en) * | 2006-06-29 | 2008-01-03 | Sang Yun Lee | Liquid crystal display driving system having light emitting diodes |
| JP2010516016A (en) * | 2006-10-06 | 2010-05-13 | キュー テクノロジー，インコーポレイテッド | Multiple arrangement light sources to achieve uniform or gradient illumination |
| JP2011505660A (en) * | 2007-11-30 | 2011-02-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Optical output device |
| US9378671B2 (en) | 2007-12-11 | 2016-06-28 | Adti Media Llc | Large scale LED display |
| JP2011508249A (en) * | 2007-12-11 | 2011-03-10 | アドバンス・ディスプレイ・テクノロジーズ・インコーポレーテッド | Large display system |
| JP2011510334A (en) * | 2007-12-11 | 2011-03-31 | アドバンス・ディスプレイ・テクノロジーズ・インコーポレーテッド | Large display data and power distribution system and method |
| US8558755B2 (en) | 2007-12-11 | 2013-10-15 | Adti Media, Llc140 | Large scale LED display system |
| US8922458B2 (en) | 2007-12-11 | 2014-12-30 | ADTI Media, LLC | Data and power distribution system and method for a large scale display |
| WO2013180500A1 (en) * | 2012-06-01 | 2013-12-05 | 서울반도체 주식회사 | Display device comprising led backlight, and power supply apparatus and power supply method therefor |
| US20150194609A1 (en) * | 2012-07-03 | 2015-07-09 | Canon Kabushiki Kaisha | Dibenzoxanthene compound, organic light-emitting device, display, image information processor, and image-forming apparatus |
| US20150212450A1 (en) * | 2012-08-07 | 2015-07-30 | Canon Kabushiki Kaisha | Novel fused polycyclic compound and organic light-emitting device, display apparatus, image information processing apparatus, lighting system, and image forming apparatus having the compound |
| US10248372B2 (en) | 2013-12-31 | 2019-04-02 | Ultravision Technologies, Llc | Modular display panels |
| US10373535B2 (en) | 2013-12-31 | 2019-08-06 | Ultravision Technologies, Llc | Modular display panel |
| US10380925B2 (en) | 2013-12-31 | 2019-08-13 | Ultravision Technologies, Llc | Modular display panel |
| US10410552B2 (en) | 2013-12-31 | 2019-09-10 | Ultravision Technologies, Llc | Modular display panel |
| US10540917B2 (en) | 2013-12-31 | 2020-01-21 | Ultravision Technologies, Llc | Modular display panel |
| US10741107B2 (en) | 2013-12-31 | 2020-08-11 | Ultravision Technologies, Llc | Modular display panel |
| US10871932B2 (en) | 2013-12-31 | 2020-12-22 | Ultravision Technologies, Llc | Modular display panels |
| US10706770B2 (en) | 2014-07-16 | 2020-07-07 | Ultravision Technologies, Llc | Display system having module display panel with circuitry for bidirectional communication |
| JP2020518866A (en) * | 2017-03-22 | 2020-06-25 | １０６４４１３７ カナダ インコーポレイテッド | LED device having one or more communication units and method of use thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2003092195A (en) | Led display device | |
| US20050237010A1 (en) | Architecture of power supply system for LCD apparatus | |
| US6936975B2 (en) | Power supply for an LCD panel | |
| KR100822113B1 (en) | Power supply system for flat panel display devices | |
| CN100484346C (en) | Illumination apparatus and image display apparatus | |
| US8638051B2 (en) | DC-DC converter and driving device of light source for display device using the same | |
| US8941698B2 (en) | LED electronic sign board capable of power-saving per pixel line | |
| EP1592115A2 (en) | A new architecture of power supply system for LCD apparatus | |
| US8159148B2 (en) | Light emitting diode light source module | |
| EP2237645A1 (en) | Current balancing apparatus, power supply apparatus, lighting apparatus, and current balancing method thereof | |
| CN107464533A (en) | A kind of constant-current drive circuit and television set | |
| TW200809756A (en) | Liquid crystal display backlight driving system with light emitting diodes | |
| TWI411353B (en) | Current balance supplying circuit for multi-dc loads | |
| CN113436571B (en) | Display device and power supply circuit | |
| CN105376508A (en) | High power supply for display device, and display device | |
| US7026767B2 (en) | High-efficiency power supply apparatus used with a display panel driving system and method thereof | |
| WO2014026411A1 (en) | Control system of liquid crystal display device and liquid crystal display device | |
| CN110710331B (en) | LED apparatus with integrated power supply and method employing the same | |
| CN102117599A (en) | Backlight drive circuit suitable for liquid crystal display panel | |
| CN105096840A (en) | Backlight driving circuit, backlight driving method and display device | |
| US20100283398A1 (en) | Driving device of lighting apparatus | |
| CN214315690U (en) | LED control circuit of projection equipment and projection equipment | |
| JP2008086186A (en) | Power supply apparatus and liquid crystal display having the same | |
| CN210225838U (en) | Dimming and color mixing circuit | |
| WO2020181830A1 (en) | Display apparatus and power supply control method |