CN202473185U - LED lattice writing display screen - Google Patents
LED lattice writing display screen Download PDFInfo
- Publication number
- CN202473185U CN202473185U CN2012200299630U CN201220029963U CN202473185U CN 202473185 U CN202473185 U CN 202473185U CN 2012200299630 U CN2012200299630 U CN 2012200299630U CN 201220029963 U CN201220029963 U CN 201220029963U CN 202473185 U CN202473185 U CN 202473185U
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- drive circuit
- mcu
- output terminal
- screen
- display screen
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Abstract
The utility model discloses an LED lattice writing display screen which is composed of an LCD display module, a button input module, a single MCU, a row drive circuit, a column drive circuit, a light pen and a lattice screen. An input terminal of the LCD display module is connected with an output terminal of the MCU. An output terminal of the button input module is connected with an input terminal of the MCU. An input terminal of the row drive circuit and an input terminal of the column drive circuit are connected with the output terminal of the MCU. An output terminal of the row drive circuit and an output terminal of the column drive circuit are connected with an input terminal of the lattice screen. The light pen is connected with the MCU. The LED lattice writing display screen can realize lighting through pointing, lighting through scratching, reverse display, erasing for the whole screen, erasing of strokes, writing words by continuous writing, object moving and other writing display functions.
Description
Technical field
The utility model relates to a kind of LED dot matrix and writes display screen.
Background technology
Manufacture and design and the application level of LED giant-screen improve day by day, and LED display has experienced from monochromatic, double-colored graphic display screen, to image display panel, until the evolution of the full color video display screen of today.Along with the development of semiconductor lighting, also will form new opportunity to develop for the overall lifting of LED display industry.Believe development along with technology, the market of the LED display maturation that grows stronger day by day, LED display technique industry also will obtain increasing concern.Be full of under challenge and the environment of opportunity at such one, Chinese LED industry will welcome a brand-new future.
The utility model content
The utility model is wanted the technical solution problem to provide a kind of LED dot matrix and is write display screen, and this LED dot matrix is write display screen can realize on screen that " light, draw bright, instead show, whole screen is wiped, stroke is wiped, write the two or more syllables of a word together multiword, object drag " etc. write Presentation Function.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be:
A kind of LED dot matrix is write display screen; This LED dot matrix is write display screen and is made up of LCD display module, keyboard input module, MCU, horizontal drive circuit, column drive circuit, light pen and dot matrix screen; The input end of said LCD display module links to each other with the output terminal of MCU; The output terminal of described keyboard input module links to each other with the input end of MCU; The input end of said horizontal drive circuit and column drive circuit links to each other with the output terminal of MCU, and the output terminal of described horizontal drive circuit and column drive circuit links to each other with the input end of dot matrix screen, and said light pen links to each other with MCU.
The utility model beneficial effect has:
The LED dot matrix of the utility model is write display screen under the control of single-chip microcomputer, and the LED dot matrix display screen is operated under the visible high bright pattern of the subtle little bright scan pattern of human eye and human eye; Under little bright scan pattern; When light pen touches LED dot matrix display screen surface; Through phototriode dot matrix is shielded little bright analyzing spot and sample, when phototriode has detected optical flare, will conducting produce a pulse signal; With this pulse signal through one relatively amplifying circuit extract, with the signal that extracts give microprocessor judge with computing to obtain its ranks coordinate.Whether the LED according to this coordinate place of functional requirement decision lights to the visible show state of human eye again, thereby realizes that on screen " light, draw bright, instead show, whole screen is wiped, stroke is wiped, write the two or more syllables of a word together multiword, object drag " etc. write Presentation Function.
Description of drawings
Fig. 1 writes the overall system block diagram of display screen for the LED dot matrix.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
Embodiment 1:
Like Fig. 1; A kind of LED dot matrix is write display screen; Main control module MCU is the core of total system, is responsible for the control to the total system running status, and this main control module MCU is used to receive the pulse signal that light pen sends over; Calculate the coordinate position of the pulse place dot matrix that detects through program, and under the control of extraneous auxiliary circuit, realize control total system.Dot matrix and driver module adopt serial mode to send reveal codes, and the scanning device that adopts shift register to do the LED lattice module on the hardware is added current-limiting resistance, drives the row of dot matrix display screen, in order to transmit character pattern data.Light pen shields little bright analyzing spot through phototriode to dot matrix samples; When phototriode has detected optical flare; Will conducting produce a pulse signal, this pulse signal extracted through a comparison amplifying circuit, the input signal of the signal that extracts as single-chip microcomputer.Native system has designed four free-standing buttons, in order to the storage control of switching, affirmation and the data of control program between different mode.The indication that LCD MODULE switches between the difference in functionality module in order to detected coordinate position of display optical pen and program.
Claims (1)
1. a LED dot matrix is write display screen; It is characterized in that; This LED dot matrix is write display screen and is made up of LCD display module, keyboard input module, MCU, horizontal drive circuit, column drive circuit, light pen and dot matrix screen; The input end of said LCD display module links to each other with the output terminal of MCU, and the output terminal of described keyboard input module links to each other with the input end of MCU, and the input end of said horizontal drive circuit and column drive circuit links to each other with the output terminal of MCU; The output terminal of described horizontal drive circuit and column drive circuit links to each other with the input end of dot matrix screen, and said light pen links to each other with MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200299630U CN202473185U (en) | 2012-01-13 | 2012-01-13 | LED lattice writing display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200299630U CN202473185U (en) | 2012-01-13 | 2012-01-13 | LED lattice writing display screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473185U true CN202473185U (en) | 2012-10-03 |
Family
ID=46921329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200299630U Expired - Fee Related CN202473185U (en) | 2012-01-13 | 2012-01-13 | LED lattice writing display screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473185U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851389A (en) * | 2015-03-12 | 2015-08-19 | 滨州学院 | LED writing display screen based on wireless transmission |
-
2012
- 2012-01-13 CN CN2012200299630U patent/CN202473185U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851389A (en) * | 2015-03-12 | 2015-08-19 | 滨州学院 | LED writing display screen based on wireless transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20130113 |