CN204102542U - A kind of display module - Google Patents
A kind of display module Download PDFInfo
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- CN204102542U CN204102542U CN201420510629.6U CN201420510629U CN204102542U CN 204102542 U CN204102542 U CN 204102542U CN 201420510629 U CN201420510629 U CN 201420510629U CN 204102542 U CN204102542 U CN 204102542U
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Abstract
The utility model discloses a kind of display module, comprise display module marker circuit, described display module marker circuit comprises several pull-up circuits and/or pull-down circuit, and described pull-up circuit and/or pull-down circuit are electrically connected with several identification pine one_to_one corresponding of display module respectively.Display module of the present utility model, by the part pin of display module is pulled to high level or is pulled down to low level, the low and high level of different pin combines the mark action played display module model, and peripheral circuit structure is simple, and cost is low.
Description
Technical field
The utility model relates to a kind of display module, specifically, relates to a kind of display module with marker circuit.
Background technology
At present a lot of electrical equipment has Presentation Function as refrigerator, air-conditioning, washing machine etc., and because the model of product, function are not quite similar, its displaying contents is also different, and corresponding adopted display module is also different.The kind of current single-chip microcomputer None-identified display module or model, therefore, need when production to configure single-chip microcomputer respectively, and the single-chip microcomputer configured can only be applicable to the display module of this model, because any point difference of displaying contents, button, function all will corresponding to the display module of a model, this will cause the single-chip microcomputer kind of corresponding configuration too much, causes managerial difficulty.The single-chip microcomputer kind simultaneously configured is too much, may occur the error by wrong single-chip microcomputer type in process of producing product, causes the possibility that cost increase and batch accident occur to a certain extent.
Summary of the invention
The utility model does not have the technical matters of identification function in order to solve existing display module, provide a kind of display module.
In order to solve the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of display module, comprise display module marker circuit, described display module marker circuit comprises several pull-up circuits and/or pull-down circuit, and described pull-up circuit and/or pull-down circuit are electrically connected with several identification pine one_to_one corresponding of display module respectively.
Further, described pull-up circuit is one, and described identification pine is at least two, described display module also comprises a power pin, the input end of described power pin is connected with direct supply by described pull-up circuit, is connected with the output terminal of described power pin for the input end exporting the identification pine of high level.
Further, described pull-up circuit comprises pull-up resistor.
Further, for export the identification pine of high level output terminal wherein a road be high level output terminal, be connected with ground end after an other road connects current-limiting resistance, the resistance of described current-limiting resistance is greater than the resistance of described pull-up resistor.
Further, described pull-down circuit comprises pull down resistor.
Further again, described display module is LED display module.
Compared with prior art, advantage of the present utility model and good effect are: display module of the present utility model, be pulled to high level by the part pin of display module marker circuit by display module or be pulled down to low level, the low and high level of different pin combines the mark action played display module model, peripheral circuit structure is simple, and cost is low.
After reading the detailed description of the utility model embodiment by reference to the accompanying drawings, other features of the present utility model and advantage will become clearly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the block scheme of a kind of embodiment of display module that the utility model proposes;
Fig. 2 is the circuit theory diagrams of a kind of embodiment of display module that the utility model proposes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one, present embodiments provide a kind of display module, comprise display module marker circuit, as shown in Figure 1, described display module marker circuit comprises several pull-up circuits and/or pull-down circuit, and described pull-up circuit and/or pull-down circuit are electrically connected with several identification pine one_to_one corresponding of display module respectively.The display module of the present embodiment, pull-up circuit is used for connected display module identification pine (P0, P1) output voltage is pulled to high level, pull-down circuit is used for connected display module identification pine (P2, P3) output voltage is pulled down to low level, by display module identification pine is connected display module marker circuit, the low and high level of display module correlated identities pin combines the mark action namely played display module type.Identification pine for being connected with marker circuit in display module preferably adopts vacant pin in current display module, and these vacant pins are in the prior art only for fixing display module, vacant pin makes full use of by the present embodiment, plays the effect of display module identify label.In addition, when have in display module one for be connected with marker circuit identification pine time, it can identify the display module of two types, also, export high level represent a kind of model, another model of output low level interval scale.The peripheral circuit structure of the present embodiment is simple, can not cause more hardware cost, but the good effect that this marker circuit plays being significant, without the need to being variant display module corresponding configuration single-chip microcomputer, alleviating managerial difficulty to product.Can avoid occurring the error by wrong single-chip microcomputer type in process of producing product simultaneously, reduce costs the possibility occurred with batch accident.
Specifically in the present embodiment, as shown in Figure 1, described pull-up circuit is be connected with direct supply VCC by connected display module identification pine.Therefore, the output voltage of this display module pin can be pulled to identical with the output voltage values of direct supply, adopts the DC voltage of+5V in such as the present embodiment.
Same, as shown in Figure 1, described pull-down circuit is held with ground by connected display module pin to be connected.Be connected by being held with ground by this pin, the output voltage of this pin is actually 0V, that is to say low level.
As a preferred embodiment, in order to ensure that circuit long-time running is stablized, the reliability of intensifier circuit and extend its serviceable life, described pull-up circuit is one, this pull-up circuit comprises pull-up resistor R1, and described identification pine is at least two, and described display module also comprises a power pin, the input end of described power pin is connected with direct supply by described pull-up circuit, is connected with the output terminal of described power pin for the input end exporting the identification pine of high level.Therefore, identification pine without the need to being used for each to export high level is connected to high level after connecting a pull-up circuit respectively, the use number of electron device is decreased while the long-time running of guarantee circuit is stable, a kind of display module that in Fig. 2, example provides comprises 4 identification pine and is respectively P11, P12, P13, P14, and a power pin P15, be connected with+5V direct supply after the input end connection pull-up resistor R1 of this power pin P15, for exporting the identification pine (P11 of high level, P13) input end is connected with the output terminal of described power pin P15, can the stability of intensifier circuit, for the identification pine (P12 of output low level, P14) by respectively pull-down circuit with hold and be connected, in the present embodiment, described pull-down circuit comprises resistance R2 respectively, R3.The circuit of structure in Fig. 2, the various combinations drawn high by the level respectively identification pine being respectively P11, P12, P13, P14 or drag down, can realize 16 kinds (
) different display module identification.
In above-described embodiment, the number of identification pine is not limited to 4 that illustrate in Fig. 2, can also increase and decrease according to actual needs.Do not depart from design concept of the present utility model, only to the change that identification pine quantity is done, all belong to protection domain of the present utility model.
Further, in order to prevent electric current excessive, damage is caused to subsequent conditioning circuit, for export the identification pine of high level output terminal wherein a road be high level output terminal, be connected with ground end after an other road connects current-limiting resistance, the resistance of described current-limiting resistance is greater than the resistance of described pull-up resistor.As the P11 in Fig. 2 wherein a road be high level output terminal, is connected with ground end after an other road connects current-limiting resistance R4, and P13 wherein a road be high level output terminal, be connected with ground end after an other road connection current-limiting resistance R5.
It should be noted that, the display module of the present embodiment can be LED display module, and display screen module etc. has the module of Presentation Function.
Certainly; above-mentioned explanation is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing, the change that those skilled in the art make in essential scope of the present utility model, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (6)
1. a display module, it is characterized in that: comprise display module marker circuit, described display module marker circuit comprises several pull-up circuits and/or pull-down circuit, and described pull-up circuit and/or pull-down circuit are electrically connected with several identification pine one_to_one corresponding of display module respectively.
2. display module according to claim 1, it is characterized in that: described pull-up circuit is one, and described identification pine is at least two, described display module also comprises a power pin, the input end of described power pin is connected with direct supply by described pull-up circuit, is connected with the output terminal of described power pin for the input end exporting the identification pine of high level.
3. display module according to claim 2, is characterized in that: described pull-up circuit comprises pull-up resistor.
4. display module according to claim 3, it is characterized in that: for export the identification pine of high level output terminal wherein a road be high level output terminal, be connected with ground end after an other road connects current-limiting resistance, the resistance of described current-limiting resistance is greater than the resistance of described pull-up resistor.
5. display module according to claim 1, is characterized in that: described pull-down circuit comprises pull down resistor.
6. the display module according to any one of claim 1-5, is characterized in that: described display module is LED display module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510629.6U CN204102542U (en) | 2014-09-05 | 2014-09-05 | A kind of display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420510629.6U CN204102542U (en) | 2014-09-05 | 2014-09-05 | A kind of display module |
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| CN204102542U true CN204102542U (en) | 2015-01-14 |
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| CN201420510629.6U Active CN204102542U (en) | 2014-09-05 | 2014-09-05 | A kind of display module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016105522B4 (en) * | 2015-03-27 | 2019-11-21 | Fanuc Corporation | display unit |
| CN113339987A (en) * | 2021-04-07 | 2021-09-03 | 宁波奥克斯电气股份有限公司 | Air conditioner display panel identification circuit and method and air conditioner indoor unit |
-
2014
- 2014-09-05 CN CN201420510629.6U patent/CN204102542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016105522B4 (en) * | 2015-03-27 | 2019-11-21 | Fanuc Corporation | display unit |
| CN113339987A (en) * | 2021-04-07 | 2021-09-03 | 宁波奥克斯电气股份有限公司 | Air conditioner display panel identification circuit and method and air conditioner indoor unit |
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