JPH049095U - - Google Patents
Info
- Publication number
- JPH049095U JPH049095U JP4688890U JP4688890U JPH049095U JP H049095 U JPH049095 U JP H049095U JP 4688890 U JP4688890 U JP 4688890U JP 4688890 U JP4688890 U JP 4688890U JP H049095 U JPH049095 U JP H049095U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- level
- power supply
- supply circuit
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Description
第１図は本考案による調光式表示装置の一実施
例を示すブロツク図である。
１０……調光式表示装置、１１……表示パネル
、１２……駆動制御回路、１３……電源回路、１
３ａ……出力電圧制御部の信号入力端子、１４，
１５……分圧抵抗、１６……スイツチ、１７……
外光検出回路。
FIG. 1 is a block diagram showing an embodiment of a dimmable display device according to the present invention. 10... Dimmable display device, 11... Display panel, 12... Drive control circuit, 13... Power supply circuit, 1
3a...Signal input terminal of output voltage control section, 14,
15...Voltage dividing resistor, 16...Switch, 17...
Ambient light detection circuit.
Claims (1)
表示パネルの各発光素子を所望のパターンで発光
せしめる駆動制御回路と、該駆動制御回路を作動
させるための電源回路とを含む表示装置において
、 上記電源回路が、電圧降下を補償するための出
力電圧制御部を備えていると共に、外光検出回路
と、外光検出回路からの検出信号に基づいて、外
光が所定のレベルより明るい場合に、出力信号が
ＬレベルまたはＨレベルに反転するスイツチ回路
とを含んでおり、該スイツチ回路の出力信号が、
上記電源回路の出力電圧制御部に入力されること
を特徴とする調光式表示装置。[Claims for Utility Model Registration] A display panel consisting of light emitting elements such as LEDs, a drive control circuit that causes each light emitting element of the display panel to emit light in a desired pattern, and a power supply circuit for operating the drive control circuit. In the display device including the power supply circuit, the power supply circuit includes an output voltage control unit for compensating for a voltage drop, and an external light detection circuit, and a display device that controls external light to a predetermined level based on a detection signal from the external light detection circuit. The switch circuit includes a switch circuit that inverts the output signal to L level or H level when the level is brighter than the level of
A dimmable display device, characterized in that the input voltage is input to an output voltage control section of the power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4688890U JPH049095U (en) | 1990-05-07 | 1990-05-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4688890U JPH049095U (en) | 1990-05-07 | 1990-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH049095U true JPH049095U (en) | 1992-01-27 |
Family
ID=31562350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4688890U Pending JPH049095U (en) | 1990-05-07 | 1990-05-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH049095U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4327370Y1 (en) * | 1966-03-02 | 1968-11-13 |
-
1990
- 1990-05-07 JP JP4688890U patent/JPH049095U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4327370Y1 (en) * | 1966-03-02 | 1968-11-13 |
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