CN1124390A - Electronic teaching screen - Google Patents
Electronic teaching screen Download PDFInfo
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- CN1124390A CN1124390A CN 95106766 CN95106766A CN1124390A CN 1124390 A CN1124390 A CN 1124390A CN 95106766 CN95106766 CN 95106766 CN 95106766 A CN95106766 A CN 95106766A CN 1124390 A CN1124390 A CN 1124390A
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- potentiometer
- electronic teaching
- teaching screen
- screen
- switch
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Abstract
The electronic teaching screen can be put into production by applying the production technology of transistor or integrated circuit. The electronic teaching screen connects in parallel many unidirectional luminescent thyristors-equivalent circuits of unidirectional thyristor and light emitting diodes connected in series. Through controllable triggering to control the display face composed by these luminous controllable units, the teaching and writing course can be implemented. The display will disappear while pushing down the normal close button to implement the erasing screen course. The electronic teaching screen is mainly substituted for black board and chalk for teaching.
Description
The present invention is a kind of electronic teaching screen for the teaching use, belongs to electronic technology field, and relevant with the production technology of semiconductor transistor and integrated circuit.
So far people to use the utensil of writing teaching still be the combination of blackboard and chalk, its shortcoming is unclean health, teacher's labour intensity is big.Though people advocate computer teaching, it must not have interpersonal lively, the proposed by the invention electronic teaching screen of instructing in words and by deeds unexpectedly, with lively teaching, be convenient to use, raise the efficiency, demonstrates its advantage.The present invention can also be used for other and touch the place that shows indication.
Therefore, provide a kind of teachers work intensity that helps alleviating, improve the teaching hygiene condition, the teaching appliance that improves teaching job efficient is a fundamental purpose of the present invention.
The invention is characterized in that this electronic teaching screen is by a low-voltage dc power supply, a switch, two potentiometers, a normally closed button, a test touch electroprobe, some light emitting diodes and one-way SCR are formed.
The low-voltage dc power supply of configuration is that power supply road work is used, with 6～12V for well.Certainly, scope can also be big as required, and power supply one end is connected with switch, and an end of the other end and first potentiometer is connected, and switch is as power switch, can be various types of switches, if can reach disconnection with and to close the effect of power supply just passable.One of the center tap of first potentiometer and second potentiometer links to each other, and the other end of second potentiometer and first potentiometer one links to each other, and first potentiometer plays the brightness regulation effect.The center tap of second potentiometer links to each other with the test touch electroprobe, so that obtain adjustable control voltage on the test touch electroprobe, one of an end of normally closed button and second potentiometer links to each other, is to use as the display circuit of disappearance back; A plurality of buttons can also be set according to the difference of control area.After showing disappearance, put down the button circuit and get back to former duty again.The anode and cathode series connection of light emitting diode and one-way SCR, or logical with their equivalent electrical circuit: the unidirection luminous controllable silicon replacement that current transistor production techniques can be made crossed; These element circuits are together in parallel, neat assembling in one plane and is exposed the control utmost point of one-way SCR on display surface again; One end of the circuit that is connected in parallel is linked to each other with button, and the common port joint of the other end and two potentiometers links to each other, and like this, entire circuit has just assembled.
Referring now to description of drawings ultimate principle of the present invention and embodiment:
Accompanying drawing 1, electronic teaching screen circuit theory diagrams
Accompanying drawing 2, unidirection luminous controllable silicon equivalent circuit diagram
Accompanying drawing 3, unidirection luminous controllable silicon profile view
Accompanying drawing 4, electronic teaching screen principle schematic
According to electronic teaching screen circuit theory Fig. 1, as power switch K
1During connection, remove to touch the silicon controlled control utmost point with the test touch electroprobe, the controllable silicon of controlled utmost point control touches conducting, the light emitting diode that links to each other with it is with regard to luminous demonstration, the test touch electroprobe touches on the controllable silicon display surface and moves, in check diode shows with regard to conducting, has so just realized the writing process of electronic teaching screen, presses normally closed button K
2Just show to disappear, realized the process of " wiping " of electronic teaching screen.Put down the button circuit and connect, ready for write next time.Potentiometer W
1Be luminance potentiometer, W
2Be to touch electroprobe control of Electric potentials potentiometer, so just finished the overall process that electronic teaching screen uses.
It is to be noted, controlled display unit circuit of the present invention, it can be the series connection of light emitting diode and one-way SCR, it also can be unidirection luminous controllable silicon, can also be by integrated process mix unidirection luminous controllable silicon display screen together, in discrete assembling, the area of each light emitting diode or unidirection luminous controllable silicon place display surface is not more than 5 millimeters
2, Show Color is better with yellow green, because human eye is responsive, also more comfortable to yellow green.Certainly, also can use other color as required.Another, the controllable silicon among the present invention can also replace with other element with controllable silicon characteristic electron, and in a word, purpose is controlled triggering.
Characteristics of the present invention: realize blackboard for education with the electronic touch luminescence display Writing process is with the process of button switch realization teaching writing " wiping ".
Advantage of the present invention is: save time, laborsaving, sanitation and hygiene.
Progressive of the present invention: the use with electric energy replaces the unhygienic of chalk, with Modern electronic devices replaces conventional teaching, the lag of blackboard.
Claims (8)
1, a kind of electronic teaching screen, it is by a low-voltage dc power supply, a switch, two potentiometers, a normally closed button, a test touch electroprobe, some light emitting diodes and one-way SCR are formed; It is characterized in that triggering one-way SCR, the light emitting diode conducting is shown, demonstration is disappeared by normally closed button by the test touch electroprobe.
2, electronic teaching screen as claimed in claim 1 is characterized in that the low-voltage dc power supply that disposes is that power supply road work is used, and for well, certain root needs the scope can be more greatly with 6～12V, and an end is connected with switch, and an end of the other end and first potentiometer is connected.
3, as the electronic teaching screen of claim 1 or 2, it is characterized in that the switch that uses is as power switch, can be various switches with this effect.
4,, it is characterized in that the center tap of the potentiometer that links to each other with power supply and switch and of second potentiometer link to each other as the electronic teaching screen of claim 1 or 2; And one of the other end of second potentiometer and first potentiometer links to each other, and first potentiometer is the potentiometer as the high light joint.
5, electronic teaching screen as claimed in claim 1 is characterised in that the centre tap of second potentiometer links to each other with the test touch electroprobe, works to regulate test touch voltage.
6, electronic teaching screen as claimed in claim 1 is characterized in that an end of normally closed button and of second potentiometer link to each other, and can a plurality of buttons be set according to the control area, shows usefulness as disappearing.
7, electronic teaching screen as claimed in claim 1 is characterized in that the anode and cathode series connection of light emitting diode and one-way SCR; And can use equivalent electrical circuit: the unidirection luminous controllable silicon that can make by current transistor replaces; Again these element circuit parallel connections, being connected between the normally closed other end that connects knob and two the potentiometer common contact again is as controllable luminous demonstration.
8, as claim 1,6 or 7 electronic teaching screen, the other end that it is characterized in that the test touch electroprobe is to be used for and the silicon controlled control utmost point touches the luminous demonstration of control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95106766 CN1124390A (en) | 1995-06-26 | 1995-06-26 | Electronic teaching screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95106766 CN1124390A (en) | 1995-06-26 | 1995-06-26 | Electronic teaching screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1124390A true CN1124390A (en) | 1996-06-12 |
Family
ID=5076026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95106766 Pending CN1124390A (en) | 1995-06-26 | 1995-06-26 | Electronic teaching screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1124390A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7453444B2 (en) | 2001-07-09 | 2008-11-18 | 3M Innovative Properties Company | Touch screen with selective touch sources |
| CN101308619B (en) * | 2007-05-18 | 2011-12-07 | 富士迈半导体精密工业（上海）有限公司 | Display apparatus capable of writing |
| CN102789699A (en) * | 2011-05-19 | 2012-11-21 | 程国亮 | Low-voltage safe computer classroom |
| TWI381348B (en) * | 2007-06-01 | 2013-01-01 | Foxsemicon Integrated Tech Inc | Writable display device |
| US8410794B2 (en) | 2008-06-25 | 2013-04-02 | 3M Innovative Properties Company | Operator identifying apparatus, operator identifying method and vehicle-mounted apparatus |
| CN103903522A (en) * | 2012-12-26 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light emitting diode display plate |
-
1995
- 1995-06-26 CN CN 95106766 patent/CN1124390A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7453444B2 (en) | 2001-07-09 | 2008-11-18 | 3M Innovative Properties Company | Touch screen with selective touch sources |
| US8159472B2 (en) | 2001-07-09 | 2012-04-17 | 3M Innovative Properties Company | Touch screen with selective touch sources |
| CN101308619B (en) * | 2007-05-18 | 2011-12-07 | 富士迈半导体精密工业（上海）有限公司 | Display apparatus capable of writing |
| TWI381348B (en) * | 2007-06-01 | 2013-01-01 | Foxsemicon Integrated Tech Inc | Writable display device |
| US8410794B2 (en) | 2008-06-25 | 2013-04-02 | 3M Innovative Properties Company | Operator identifying apparatus, operator identifying method and vehicle-mounted apparatus |
| CN102789699A (en) * | 2011-05-19 | 2012-11-21 | 程国亮 | Low-voltage safe computer classroom |
| CN103903522A (en) * | 2012-12-26 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Light emitting diode display plate |
| CN103903522B (en) * | 2012-12-26 | 2017-07-21 | 赛恩倍吉科技顾问（深圳）有限公司 | Light-emitting diode display panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Liu Mingjin Document name: Deemed as a notice of withdrawal |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |