JPH06214519A - Power source polarity switch control circuit and display device - Google Patents
Power source polarity switch control circuit and display deviceInfo
- Publication number
- JPH06214519A JPH06214519A JP581493A JP581493A JPH06214519A JP H06214519 A JPH06214519 A JP H06214519A JP 581493 A JP581493 A JP 581493A JP 581493 A JP581493 A JP 581493A JP H06214519 A JPH06214519 A JP H06214519A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- control circuit
- switching control
- pair
- drive signal
- 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
- 239000003086 colorant Substances 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of El Displays (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は，電源極性切替制御回路
及びそれを用いた表示装置に関し，特に，２色発光タイ
プの発光ダイオード（以下，ＬＥＤと呼ぶ）に接続され
る電源の極性切替制御回路とそれを用いた表示装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power source polarity switching control circuit and a display device using the same, and more particularly to a polarity switching control of a power source connected to a two-color light emitting type light emitting diode (hereinafter referred to as LED). The present invention relates to a circuit and a display device using the circuit.
【０００２】[0002]
【従来の技術】従来，２色発光ＬＥＤを用いた表示装置
が知られている。この種の表示装置の一例は，図２で示
すように，複数の２色発光ＬＥＤ１を含んでいる。各２
色発光ＬＥＤ１は，順方向に通電すると赤色光を発生す
るＲＥＤ−ＬＥＤ素子（Ｒ）と順方向に通電すると緑色
光を発生するＧＲＥＥＮ−ＬＥＤ素子（Ｇ）とを備え，
これらのＬＥＤ素子は互いに極性が逆になるように両端
同志が接続され，一対の電極１ａ，１ｂが形成されてい
る。この両端の電極１ａ，１ｂは，夫々電源接続線１０
に並列に集合抵抗器２を介して接続されている。2. Description of the Related Art Conventionally, a display device using a two-color light emitting LED has been known. An example of this type of display device includes a plurality of two-color light emitting LEDs 1, as shown in FIG. 2 each
The color light emitting LED 1 includes a RED-LED element (R) that emits red light when energized in the forward direction and a GREEN-LED element (G) that emits green light when energized in the forward direction.
Both ends of these LED elements are connected so that their polarities are opposite to each other, and a pair of electrodes 1a and 1b are formed. The electrodes 1a and 1b at both ends are respectively connected to the power supply connection line 10
Are connected in parallel via the collective resistor 2.
【０００３】また，２色発光ＬＥＤ１の一方の電極１ａ
は，接続線１１に接続されるとともに，２色発光ＬＥＤ
１の他の電極は，接続線１２に接続されている。この接
続線１２は，ＧＮＤ線１３に接続されている。Also, one electrode 1a of the two-color LED 1
Is connected to the connection line 11 and is a two-color LED
The other electrode of 1 is connected to the connection line 12. The connection line 12 is connected to the GND line 13.
【０００４】各２色発光ＬＥＤ１の電極１ａ，１ｂに極
性の相反する電源を接続線１０を介して接続するため，
正の極性及び負の極性を有する２電源が用意されてい
る。これらの電源の接続の切り替えは，駆動信号によっ
て動作する継電器５の接点５ａを介して行われていた。In order to connect the power sources having opposite polarities to the electrodes 1a and 1b of each two-color light emitting LED 1 through the connection line 10,
There are two power supplies with positive and negative polarities. Switching of these power supply connections has been performed via the contact 5a of the relay 5 operated by a drive signal.
【０００５】[0005]
【発明が解決しようとする課題】上述した従来の方法
は，電源として極性の異なる２系統用意する必要がある
ため，２系統の占有面積を必要とし，作業効率やエネル
ギー効率面においても，２系統分の損失を有する状態で
あった。In the above-mentioned conventional method, it is necessary to prepare two systems having different polarities as the power source, so that the area occupied by the two systems is required, and in terms of work efficiency and energy efficiency, two systems are required. There was a loss of minutes.
【０００６】また，２系統の電源の切替に，継電器等を
使用していたため，容量，形状が大きいという問題があ
り，占有面積が大きく，従って，非常に単位面積当りの
切り替えの効率の悪いものであった。Further, since a relay or the like is used to switch the power supplies of the two systems, there is a problem that the capacity and the shape are large, and the occupying area is large. Therefore, the switching efficiency per unit area is very poor. Met.
【０００７】そこで，本発明の技術的課題は，小型・軽
量化等の高効率化を図ることができる極性切替制御回路
を提供することにある。Therefore, a technical object of the present invention is to provide a polarity switching control circuit capable of achieving high efficiency such as reduction in size and weight.
【０００８】[0008]
【課題を解決するための手段】本発明によれば，一対の
電極を有し当該電極の極性の変化に応じて異なる表示を
行う表示素子に結合され，入力された２値の駆動信号に
応じて前記一対の電極の極性を切り替える電源極性切替
制御回路において，前記２値の駆動信号が一方の値を示
すときに前記一対の電極の内の一方の極性を逆転させる
第１スイッチ素子と，前記２値の駆動信号が他方の値を
示すときに前記一対の電極の内の他方の極性を逆転させ
る第２スイッチ素子とを備えたことを特徴とする電源極
性切替制御回路が得られる。According to the present invention, a pair of electrodes are coupled to a display element for displaying differently according to a change in the polarity of the electrodes, and the display element is responsive to an input binary drive signal. A power source polarity switching control circuit for switching the polarities of the pair of electrodes, a first switch element for reversing the polarity of one of the pair of electrodes when the binary drive signal indicates one value, A power supply polarity switching control circuit is provided, which comprises a second switch element that reverses the polarity of the other of the pair of electrodes when the binary drive signal indicates the other value.
【０００９】本発明によれば，前記電源極性切替制御回
路において，前記第１及び第２のスイッチ素子の各々
は，トランジスタを備え，前記第１及び第２のスイッチ
素子の内の一方は前記トランジスタの駆動信号入力側に
インバータを備えていることを特徴とする電源極性切替
制御回路が得られる。According to the present invention, in the power supply polarity switching control circuit, each of the first and second switch elements includes a transistor, and one of the first and second switch elements is the transistor. It is possible to obtain a power supply polarity switching control circuit characterized in that an inverter is provided on the drive signal input side of.
【００１０】本発明によれば，前記電源極性切替制御回
路において，前記表示素子は，通電されたときに互いに
異なる色の発光を行う発光ダイオードを互いに極性が逆
となるように接続されたものであることを特徴とする電
源極性切替制御回路が得られる。According to the present invention, in the power supply polarity switching control circuit, the display element is formed by connecting light emitting diodes which emit light of different colors when they are energized so that their polarities are opposite to each other. A power polarity switching control circuit characterized by the above is obtained.
【００１１】本発明によれば，一対の電極を有し当該電
極の極性の変化に応じて異なる表示を行う表示素子と，
入力された２値の駆動信号に応じて前記一対の電極の極
性を切り替える電源極性切替制御回路とを含み，前記電
源極性切替制御回路は，前記２値の駆動信号が一方の値
を示すときに前記一対の電極の内の一方の極性を逆転さ
せる第１スイッチ素子と，前記２値の駆動信号が他方の
値を示すときに前記一対の電極の内の他方の極性を逆転
させる第２スイッチ素子とを備えたことを特徴とする表
示装置が得られる。According to the present invention, a display element having a pair of electrodes and performing different displays according to changes in the polarities of the electrodes,
A power supply polarity switching control circuit that switches the polarities of the pair of electrodes according to an input binary driving signal, wherein the power supply polarity switching control circuit is configured to control when the binary driving signal indicates one value. A first switching element that reverses the polarity of one of the pair of electrodes, and a second switching element that reverses the other polarity of the pair of electrodes when the binary drive signal indicates the other value. It is possible to obtain a display device including:
【００１２】[0012]
【作用】本発明の電源極性切替制御回路において，第１
スイッチ素子は，表示素子に入力される２値の駆動信号
が一方の値を示すときに表示素子の一対の電極の内の一
方の極性を逆転させる。また，第２スイッチ素子は，前
記２値の駆動信号が他方の値を示すときに前記一対の電
極の内の他方の極性を逆転させる。In the power supply polarity switching control circuit of the present invention, the first
The switch element reverses the polarity of one of the pair of electrodes of the display element when the binary drive signal input to the display element indicates one value. The second switch element reverses the polarity of the other of the pair of electrodes when the binary drive signal indicates the other value.
【００１３】[0013]
【実施例】以下，本発明の実施例について，図面を参照
して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は本発明の実施例に係る表示装置を示
す図である。この表示装置は，複数の２色発光ＬＥＤ１
を含んでいる。各２色発光ＬＥＤ１は，ＲＥＤ−ＬＥＤ
素子（Ｒ）とＧＲＥＥＮ−ＬＥＤ素子（Ｇ）とを備え，
互いに極性が逆になるように，並列に両端が接続されて
いる。両端の電極１ａ，１ｂは，正のＤＣ電源入力端に
接続された電源接続線１０に並列に集合抵抗器２を介し
て接続されている。２色発光ＬＥＤ１の両端の電極１
ａ，１ｂのうちの一方は，接続線１１に接続され，第１
トランジスタ素子３を介してグランド（ＧＮＤ）に接続
されている。一方，２色発光ＬＥＤ１の両端の電極１
ａ，１ｂのうちの他方の電極１ｂは，接続線１２に接続
され，第２トランジスタ素子３´を介して，グランド
（ＧＮＤ）に接続されている。FIG. 1 is a diagram showing a display device according to an embodiment of the present invention. This display device includes a plurality of two-color light emitting LEDs1.
Is included. Each 2-color LED1 is a RED-LED
An element (R) and a GREEN-LED element (G),
Both ends are connected in parallel so that the polarities are opposite to each other. The electrodes 1a and 1b at both ends are connected in parallel to a power supply connection line 10 connected to a positive DC power supply input end via a collective resistor 2. Electrodes 1 on both ends of the two-color LED 1
One of a and 1b is connected to the connecting line 11,
It is connected to the ground (GND) through the transistor element 3. On the other hand, the electrodes 1 on both ends of the two-color LED 1
The other electrode 1b of a and 1b is connected to the connection line 12 and is connected to the ground (GND) via the second transistor element 3 '.
【００１５】また，駆動信号線１４は，駆動入力端子Ｉ
Ｎから２つに分岐して一方１４ａは第１トランジスタ素
子３のベース側に接続され，他方１４ｂはインバータ４
を介して第２トランジスタ素子３´のベース側に接続さ
れている。ここで，第１トランジスタ素子３と，インバ
ータ４と，第２トランジスタ素子３´とは合せて，電源
極性切替回路として働く。The drive signal line 14 has a drive input terminal I
N is branched into two, one 14a is connected to the base side of the first transistor element 3, and the other 14b is the inverter 4
It is connected to the base side of the second transistor element 3'through. Here, the first transistor element 3, the inverter 4, and the second transistor element 3 ', together, function as a power supply polarity switching circuit.
【００１６】次に，図１の表示装置の動作について説明
する。Next, the operation of the display device of FIG. 1 will be described.
【００１７】駆動入力端子ＩＮから駆動信号線１４に，
ハイ（Ｈｉｇｈ）レベルの駆動信号を入力すると，２個
のトランジスタ素子３，３´のうちインバータ素子４に
より，第１トランジスタ素子３のみが導通する。その結
果，接続されている２色発光ＬＥＤ１の（Ｒ）側に電流
が流れ，赤色に発光する。From the drive input terminal IN to the drive signal line 14,
When a high-level drive signal is input, only the first transistor element 3 is turned on by the inverter element 4 of the two transistor elements 3 and 3 '. As a result, a current flows to the (R) side of the connected two-color light emitting LED 1 and light is emitted in red.
【００１８】一方，駆動入力端子ＩＮから駆動信号線１
４に，ロー（Ｌｏｗ）レベルの駆動信号を入力すると，
第１トランジスタ素子３は動作せず，インバータ４を介
して，ハイ（Ｈｉｇｈ）レベルの信号が第２トランジス
タ素子３´のみに入力し，このトランジスタ素子３´が
導通する。この結果，２色発光ＬＥＤ１の（Ｇ）に電流
が流れ，緑色に発光する。On the other hand, from the drive input terminal IN to the drive signal line 1
When a low level drive signal is input to 4,
The first transistor element 3 does not operate, and a high-level signal is input only to the second transistor element 3'through the inverter 4, and the transistor element 3'is rendered conductive. As a result, a current flows through (G) of the two-color light emitting LED 1 to emit green light.
【００１９】[0019]
【発明の効果】以上，説明したように，本発明では，電
源極性切替制御回路を使用することによって，２系統電
源或いは継電器等を不要とした更に小型・軽量等効率面
においてメリットが大であるこの電源極性切替制御回
路，及びそれを用いた表示装置を提供することができ
る。As described above, according to the present invention, by using the power supply polarity switching control circuit, there is a great advantage in terms of efficiency such as smaller size and lighter weight, which does not require a two-system power supply or a relay. A power supply polarity switching control circuit and a display device using the same can be provided.
【００２０】本発明の効果は，特に，コントロールディ
スプレイ等，表示情報量の高密度化に伴い絶大である。The effect of the present invention is particularly great as the display information amount such as a control display is increased in density.
【図１】本発明の実施例に係る表示装置を示す図であ
る。FIG. 1 is a diagram showing a display device according to an embodiment of the present invention.
【図２】従来の表示装置の一例を示す図である。FIG. 2 is a diagram showing an example of a conventional display device.
１ ２色発光ＬＥＤ ２ 集合抵抗器 ３ 第１トランジスタ素子 ３´ 第２トランジスタ素子 ４ インバータ素子 ５ 継電器 １０ 電源接続線 １１，１２，１３ 接続線 １４ 駆動信号線 １４ａ，１４ｂ 駆動信号分岐線 1 2 Color Light Emitting LED 2 Assembly Resistor 3 First Transistor Element 3'Second Transistor Element 4 Inverter Element 5 Relay 10 Power Supply Connection Line 11, 12, 13 Connection Line 14 Drive Signal Line 14a, 14b Drive Signal Branch Line
Claims (4)
に応じて異なる表示を行う表示素子に結合され，入力さ
れた２値の駆動信号に応じて前記一対の電極の極性を切
り替える電源極性切替制御回路において，前記２値の駆
動信号が一方の値を示すときに前記一対の電極の内の一
方の極性を逆転させる第１スイッチ素子と，前記２値の
駆動信号が他方の値を示すときに前記一対の電極の内の
他方の極性を逆転させる第２スイッチ素子とを備えたこ
とを特徴とする電源極性切替制御回路。1. A power supply which is coupled to a display element having a pair of electrodes and which performs different display according to changes in the polarities of the electrodes, and switches the polarities of the pair of electrodes according to an input binary drive signal. In the polarity switching control circuit, a first switch element that reverses the polarity of one of the pair of electrodes when the binary drive signal indicates one value, and the binary drive signal changes the other value. A power supply polarity switching control circuit comprising: a second switch element that reverses the polarity of the other of the pair of electrodes when shown.
おいて，前記第１及び第２のスイッチ素子の各々は，ト
ランジスタを備え，前記第１及び第２のスイッチ素子の
内の一方は前記トランジスタの駆動信号入力側にインバ
ータを備えていることを特徴とする電源極性切替制御回
路。2. The power supply polarity switching control circuit according to claim 1, wherein each of the first and second switch elements includes a transistor, and one of the first and second switch elements is the transistor. A power supply polarity switching control circuit characterized by comprising an inverter on the drive signal input side of.
おいて，前記表示素子は，通電されたときに互いに異な
る色の発光を行う発光ダイオードを互いに極性が逆とな
るように接続されたものであることを特徴とする電源極
性切替制御回路。3. The power supply polarity switching control circuit according to claim 2, wherein the display element is formed by connecting light emitting diodes which emit light of different colors when they are energized so that their polarities are opposite to each other. A power polarity switching control circuit characterized by being present.
に応じて異なる表示を行う表示素子と，入力された２値
の駆動信号に応じて前記一対の電極の極性を切り替える
電源極性切替制御回路とを含み，前記電源極性切替制御
回路は，前記２値の駆動信号が一方の値を示すときに前
記一対の電極の内の一方の極性を逆転させる第１スイッ
チ素子と，前記２値の駆動信号が他方の値を示すときに
前記一対の電極の内の他方の極性を逆転させる第２スイ
ッチ素子とを備えたことを特徴とする表示装置。4. A display element which has a pair of electrodes and performs different display according to a change in the polarity of the electrodes, and a power source polarity switching which switches the polarities of the pair of electrodes according to an input binary drive signal. A power source polarity switching control circuit, wherein the power source polarity switching control circuit reverses the polarity of one of the pair of electrodes when the binary drive signal indicates one value; And a second switch element that reverses the polarity of the other of the pair of electrodes when the drive signal of 1 indicates the other value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP581493A JPH06214519A (en) | 1993-01-18 | 1993-01-18 | Power source polarity switch control circuit and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP581493A JPH06214519A (en) | 1993-01-18 | 1993-01-18 | Power source polarity switch control circuit and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06214519A true JPH06214519A (en) | 1994-08-05 |
Family
ID=11621556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP581493A Pending JPH06214519A (en) | 1993-01-18 | 1993-01-18 | Power source polarity switch control circuit and display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06214519A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8159419B2 (en) | 2005-07-01 | 2012-04-17 | Samsung Electronics Co., Ltd. | Display apparatus and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53122850A (en) * | 1977-03-30 | 1978-10-26 | Nissan Motor | Device for pulling yarn end on shuttleless loom |
| JPS5450756A (en) * | 1977-09-29 | 1979-04-20 | Sakata Kikai Kk | Speed deviator |
| JPS55165963A (en) * | 1979-06-11 | 1980-12-24 | Tokushu Muki Zairyo Kenkyusho | Formation of heat-resistant and insulating film on surface of metal |
-
1993
- 1993-01-18 JP JP581493A patent/JPH06214519A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53122850A (en) * | 1977-03-30 | 1978-10-26 | Nissan Motor | Device for pulling yarn end on shuttleless loom |
| JPS5450756A (en) * | 1977-09-29 | 1979-04-20 | Sakata Kikai Kk | Speed deviator |
| JPS55165963A (en) * | 1979-06-11 | 1980-12-24 | Tokushu Muki Zairyo Kenkyusho | Formation of heat-resistant and insulating film on surface of metal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8159419B2 (en) | 2005-07-01 | 2012-04-17 | Samsung Electronics Co., Ltd. | Display apparatus and control method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19950905 |