CN205594987U - Digital dot -matrix display screen of LED - Google Patents
Digital dot -matrix display screen of LED Download PDFInfo
- Publication number
- CN205594987U CN205594987U CN201620323434.XU CN201620323434U CN205594987U CN 205594987 U CN205594987 U CN 205594987U CN 201620323434 U CN201620323434 U CN 201620323434U CN 205594987 U CN205594987 U CN 205594987U
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- led
- drive circuit
- dot matrix
- display screen
- number dot
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Abstract
The utility model relates to a digital dot -matrix display screen of LED, including display screen support and installing the display module on display screen support, the display module includes the base plate, assembles the digital dot matrix of LED on the base plate and be used for driving the luminous drive circuit of the digital dot matrix of LED, and LED number dot matrix includes a plurality of LED chips with digital dot matrix formal distribution, and the interval of two arbitrary adjacent LED chips is not more than 1.6mm. Drive circuit including each that is used for driving the digital dot matrix of LED respectively go with each the LED chip capables drive circuit and be listed as drive circuit. Each way output of line drive circuit is gone with each of the digital dot matrix of LED and still is equipped with amplifier circuit between the input that corresponds. The utility model discloses a reasonable layout design amounts to code -point formation formula with LED chip mounting, and just the interval of two adjacent LED chips can be controlled to being not more than 1.6mm, and the corresponding drive circuit that deuterogamies can make the digital dot matrix fine definition ground of LED show different contents, is particularly useful for the demand of household electrical appliances field small size display screen.
Description
Technical field
This utility model relates to photoelectric display field, is specifically related to a kind of LED number dot matrix display screen.
Background technology
Along with the development of society's science and technology, environmental protection becomes current all trades and professions focus of attention.LED display has obtained people as energy-conserving product and has more paid close attention to.
In field of household appliances, at any time intelligent, automaticity is more and more higher, a lot of household electrical appliances are also fitted with display screen for showing state and the parameter etc. of operation, most relatively simple digital display tubes used, the content that this digital display tube can show is the most single, the most can not meet the display demand in terms of current home wiring control.Show to this end, some household electrical appliances begin with small-sized liquid crystal display screen, although more content can be shown, but its relative cost is higher.And LED display is because its design and the restriction of manufacture, being the most also mainly used in large-scale outdoor display screen, such as: advertisement screen, court screen etc., display demand high-precision for small size is difficult to meet.
Utility model content
It is in consideration of it, this utility model solves the technical problem that, it is provided that a kind of LED number dot matrix display screen, display precision can be effectively improved, meet the application demand of household electrical appliances.
For solving the problems referred to above, this utility model following technical scheme of offer: a kind of LED number dot matrix display screen, including display/panel bracket and the display module being installed on display/panel bracket, described display module includes substrate, be assembled on substrate LED number dot matrix and for driving the digital lattice luminous drive circuit of described LED, described LED number dot matrix includes multiple LED chip with digital latticed form distribution, and the spacing of the adjacent LED chip of any two is not more than 1.6mm.
Further, described drive circuit includes horizontal drive circuit and the column drive circuit being respectively used to the LED chip of each row and each row driving LED number dot matrix.
Further, it is additionally provided with the amplifying circuit for controlling horizontal drive circuit each road output end current size between the input that each road outfan of described horizontal drive circuit is corresponding with every a line of LED number dot matrix.
Further, described amplifying circuit is audion, and the base stage of each audion connects the outfan on correspondence one tunnel of horizontal drive circuit, and colelctor electrode is connected to the input of corresponding a line of LED number dot matrix.
Further, the surface encapsulation of described LED chip has epoxy resin sealant.
Further, described drive circuit also includes being arranged on substrate the external-connected port for realizing being connected with peripheral control unit, and the input of described horizontal drive circuit and column drive circuit is all correspondingly connected to described external-connected port.
Further, described external-connected port includes controlling mouth containing power supply and the ground CN1 user interface of interface, four row scan control mouths and four column signals, the input of described horizontal drive circuit is correspondingly connected to row scan control mouth, and the input of the input of column drive circuit is correspondingly connected to column signal and controls mouth.
After using this technical scheme, this utility model at least possesses techniques below effect: this utility model is designed by rational deployment, LED chip is assembled into digital latticed form, and the spacing of adjacent two LED chip can control as no more than 1.6mm, coordinate corresponding drive circuit again, show different contents with can making LED number dot matrix fine definition, and overall dimensions is less, is particularly suited for the demand of the little area display in the fields such as household electrical appliances.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of this utility model LED number dot matrix display screen.
Fig. 2 is this utility model LED number dot matrix display screen external-connected port, horizontal drive circuit, amplifying circuit and the connection diagram of LED number dot matrix.
Fig. 3 is this utility model LED number dot matrix display screen external-connected port, column drive circuit and the connection diagram of LED number dot matrix.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be combined with each other, and are described in further detail the application with specific embodiment below in conjunction with the accompanying drawings.
As shown in figures 1 and 3, this utility model provides a kind of LED number dot matrix display screen, including display/panel bracket 1 and the display module being installed on display support 1.
Described display module includes again substrate 2, be assembled on substrate 2 LED number dot matrix and for driving the digital lattice luminous drive circuit 6 of described LED.Described LED number dot matrix includes multiple LED chip 4 with digital latticed form distribution, and this utility model is designed by rational deployment and packaging technology controls so that the spacing of the LED chip 4 that any two is adjacent is not more than 1.6mm.The front of LED chip 4 is also packaged with epoxy resin sealant 8, LED chip 4 is isolated from the outside and comes, to extend the service life of LED chip 4.
Described substrate 2 preferably employs pcb board, and drive circuit 6 can directly be printed on the bottom surface of substrate 2, and LED chip is then packaged in the end face of substrate 2, as shown in Figure 1.Described drive circuit 6 also includes an external-connected port 7 arranged on a substrate 2, for realizing being connected with peripheral control unit, described peripheral control unit can be Programmable Logic Controller, such that it is able to write the control program of correspondence according to different display demands, then input control data by external-connected port 7.In one embodiment, described external-connected port 7 includes controlling mouth containing power supply and the ground CN1 user interface of interface, tetra-row scan control mouths of A, B, C, D and tetra-column signals of CLK, SDI, OE, LE.Described drive circuit 6 includes horizontal drive circuit 60 and the column drive circuit 61 of each LED chip 4 on each row for driving LED number dot matrix and each row.The amplifying circuit for controlling horizontal drive circuit 60 each road output end current size it is provided with between the input that horizontal drive circuit 60 each road outfan is corresponding with every a line of LED number dot matrix.
When being embodied as, horizontal drive circuit 60 preferably uses 74LS154 decoder to realize, described amplifying circuit preferably employs audion, thus when implementing, each outfan (U1_0, U1_1, U1_2 ...) of 74LS154 decoder connects with the base stage of a corresponding audion, and the colelctor electrode of this audion is connected to the row pin (L1, L2 ...) of LED number dot matrix as Current amplifier end, when the outfan output low level of 74LS154 decoder, triode ON, the row pin of LED number dot matrix can obtain conducting electric current.It should be noted that, described 74LS154 decoder also can be replaced 74LS138 decoder.As in figure 2 it is shown, the 4 of 74LS154 decoder corresponding inputs are additionally coupled to A, B, C, D row scan control mouth of external-connected port 7.
As shown in Figure 3, column drive circuit 61 preferably employs TM1818 and drives IC to realize, tetra-column signals of CLK, SDI, OE, LE that TM1818 drives input interface corresponding for IC to be respectively connecting to external-connected port 7 control mouth, and TM1818 drives the output interface (H) of IC to be connected to the row pin of LED chip 4.Certainly, TM1818 drives IC replace with MBI5024 drives IC or 74HC595 to drive IC to be the most all feasible.
As shown in Figures 2 and 3, this utility model is used 74LS154 decoder and the voltage of the VCC end of TM1818 driving IC are all set as+5V.
In the embodiment shown in Fig. 2 and Fig. 3, the 16*64LED array that LED number dot matrix is made up of LED chip 4, the i.e. TM1818 of column drive circuit 61 drives IC need to use 4.It is understandable that, quantity and the array of the LED chip 4 on described LED number dot matrix can freely design, it is not limited solely to 16*64LED array, may be alternatively provided as 8*8LED array or be arranged to 16*32LED array etc. according to concrete application scenario, correspondingly, the adjustment that the quantity of the driving chip that described horizontal drive circuit 60, column drive circuit 61 are used also adapts.
Distance controlling between adjacent two LED chip 4 is less than 1.6mm by this utility model, thus, good visual effect also can be obtained when closely watching.
This utility model LED number dot matrix display screen is operationally, only need the most programmed good data to be inputted from external-connected port 7 in advance, controlling data and i.e. can set the outfan output electric current controlling 6074LS154 decoder, TM1818 driving IC by follow procedure, electric current drives LED chip 4 luminescence to make to show different pattern on LED number dot matrix.
Although of the present utility model embodiment is had been shown and described above-mentioned, for the ordinary skill in the art, it is understandable that, these embodiments can carry out in the case of without departing from principle of the present utility model and spirit the change of multiple equivalence, revise, replace and modification, scope of the present utility model is limited by claims and equivalency range thereof.
Claims (7)
1. a LED number dot matrix display screen, including display/panel bracket and the display module being installed on display/panel bracket, it is characterized in that: described display module includes substrate, the LED number dot matrix that is assembled on substrate and for driving the digital lattice luminous drive circuit of described LED, described LED number dot matrix includes multiple LED chip with digital latticed form distribution, and the spacing of the adjacent LED chip of any two is not more than 1.6mm.
2. LED number dot matrix display screen as claimed in claim 1, it is characterised in that: described drive circuit includes horizontal drive circuit and the column drive circuit being respectively used to the LED chip of each row and each row driving LED number dot matrix.
3. LED number dot matrix display screen as claimed in claim 2, it is characterised in that: it is additionally provided with the amplifying circuit for controlling horizontal drive circuit each road output end current size between the input that each road outfan of described horizontal drive circuit is corresponding with every a line of LED number dot matrix.
4. LED number dot matrix display screen as claimed in claim 3, it is characterized in that: described amplifying circuit is audion, the base stage of each audion connects the outfan on correspondence one tunnel of horizontal drive circuit, and colelctor electrode is connected to the input of corresponding a line of LED number dot matrix.
5. LED number dot matrix display screen as claimed in claim 1, it is characterised in that: the surface encapsulation of described LED chip has epoxy resin sealant.
6. LED number dot matrix display screen as claimed in claim 2, it is characterized in that: described drive circuit also includes being arranged on substrate the external-connected port for realizing being connected with peripheral control unit, and the input of described horizontal drive circuit and column drive circuit is all correspondingly connected to described external-connected port.
7. LED number dot matrix display screen as claimed in claim 6, it is characterized in that: described external-connected port includes controlling mouth containing power supply and the ground CN1 user interface of interface, four row scan control mouths and four column signals, the input of described horizontal drive circuit is correspondingly connected to row scan control mouth, and the input of the input of column drive circuit is correspondingly connected to column signal and controls mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620323434.XU CN205594987U (en) | 2016-04-15 | 2016-04-15 | Digital dot -matrix display screen of LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620323434.XU CN205594987U (en) | 2016-04-15 | 2016-04-15 | Digital dot -matrix display screen of LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205594987U true CN205594987U (en) | 2016-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620323434.XU Expired - Fee Related CN205594987U (en) | 2016-04-15 | 2016-04-15 | Digital dot -matrix display screen of LED |
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| Country | Link |
|---|---|
| CN (1) | CN205594987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559677A (en) * | 2018-12-20 | 2019-04-02 | 深圳市羽微电子有限公司 | A kind of LED display driver IC |
-
2016
- 2016-04-15 CN CN201620323434.XU patent/CN205594987U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109559677A (en) * | 2018-12-20 | 2019-04-02 | 深圳市羽微电子有限公司 | A kind of LED display driver IC |
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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 |
Granted publication date: 20160921 Termination date: 20200415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |