CN204154781U - LCD voltage signal detection system - Google Patents
LCD voltage signal detection system Download PDFInfo
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- CN204154781U CN204154781U CN201420345726.4U CN201420345726U CN204154781U CN 204154781 U CN204154781 U CN 204154781U CN 201420345726 U CN201420345726 U CN 201420345726U CN 204154781 U CN204154781 U CN 204154781U
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- lcd
- module
- voltage signal
- detection system
- driver module
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- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The utility model discloses a kind of LCD voltage signal detection system, this LCD voltage signal detection system comprises LCD driver module, detection module and indicating module, wherein, described detection module is connected with described LCD driver module and described indicating module respectively, further, voltage isolation module is also connected with between described LCD driver module and described detection module.The utility model is by combining LCD voltage signal detection system by LCD driver module, detection module and indicating module, thus the waveform achieved LCD driver module exports automatically detects and shows, and then greatly can improve the detection efficiency that LCD drives pin, reduce input cost and the time of detection, and voltage isolator is added in the rear end of LCD driver module, then effectively can eliminate LCD drives the signal of pin output on the impact of rear class testing circuit, can gather the voltage signal measured LCD and drive pin to export more accurately.
Description
Technical field
The utility model relates to LCD (liquid crystal display) voltage signal detection field, specifically, relates to a kind of LCD voltage signal detection system.
Background technology
In the application of single-chip microcomputer, man-machine interface occupies considerable status.And in the middle of these man-machine interfaces, the LCD display of binding driving chip is able to widespread use because it has the features such as volume is little, cost is lower in a lot of application scenario.But the situation driving pin disconnection, series winding often appears in a lot of LCD driving chip in binding procedure, the voltage causing driving pin to export is abnormal.
At present, whether detect section-type LCD and drive pin output voltage signal normal, the scheme usually adopted, and whether manual observation display is normal if being directly drive pin to be connected to LCD liquid crystal display section-type LCD.Drive pin whether normal although this method can detect LCD to a certain extent, efficiency is lower and need a large amount of testing staff, and no matter from the time, or cost is considered, this scheme is all worthless.
For the problem in correlation technique, at present effective solution is not yet proposed.
Utility model content
For the problems referred to above in correlation technique, the utility model proposes a kind of LCD voltage signal detection system.
The technical solution of the utility model is achieved in that
A kind of LCD voltage signal detection system, comprise LCD driver module, detection module and indicating module, wherein, described detection module is connected with described LCD driver module and described indicating module respectively.
Further, this LCD voltage signal detection system also comprises: voltage isolation module, and described voltage isolation module is connected between described LCD driver module and described detection module.
Optionally, described LCD driver module comprises the single-chip microcomputer with section-type LCD driving function.
Optionally, described detection module comprises the single-chip microcomputer of single-chip microcomputer or the plug-in A/D conversion chip with A/D translation function.
Optionally, described indicating module comprise following one of at least: LED, LED display, LCD display.
Optionally, described voltage isolation module comprises voltage follower.
The utility model is by combining LCD voltage signal detection system by LCD driver module, detection module and indicating module, thus the waveform achieved LCD driver module exports automatically detects and shows, and then greatly can improve the detection efficiency that LCD drives pin, reduce input cost and the time of detection.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, 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 structural representation of the LCD voltage signal detection system according to the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the utility model protection.
According to embodiment of the present utility model, provide a kind of LCD voltage signal detection system.
As shown in Figure 1, the LCD voltage signal detection system according to the utility model embodiment comprises LCD driver module 1, detection module 2 and indicating module 3, and wherein, described detection module 2 is connected with described LCD driver module 1 and described indicating module 3 respectively.
In addition, this LCD voltage signal detection system also comprises: voltage isolation module 4, and described voltage isolation module 4 is connected between described LCD driver module 1 and described detection module 2.
When practical application, described LCD driver module 1 is responsible for exporting the LCD voltage signal with waveform, and it can be have the single-chip microcomputer that section-type LCD drives function, and this single-chip microcomputer can be binding, also can be unbundling.
Described detection module 2 is then the voltage signal being responsible for gathering the output of LCD driver module, and convert voltage signal to digital signal, preserve digital signal simultaneously, use for indicating module display, it can be have the single-chip microcomputer of A/D translation function or the single-chip microcomputer of plug-in A/D conversion chip, wherein, for A/D conversion chip, A/D changes that the principle of core can be integral form, successive approximation, parallelly compare type/serial parallel type, ∑-Δ modulation type, capacitor array successively compare type and voltage to frequency conversion type.
Described indicating module 3 is then the result that responsible real detection module detects, and it can be LED, LED display or LCD display, can certainly be that other have the equipment of Presentation Function.
Described voltage isolation module 4 is then be responsible for eliminating the effect isolated described LCD driver module output voltage signal and affect late-class circuit, it can be voltage follower, and voltage follower can be transistor circuit, field effect transistor circuit, integrated operational amplifier circuit or integrated voltage follower chip.
As fully visible, by means of technique scheme of the present utility model, by LCD driver module 1, detection module 2 and indicating module 3 are combined LCD voltage signal detection system, thus the waveform achieved LCD driver module 1 exports automatically detects and shows, and then greatly can improve the detection efficiency that LCD drives pin, reduce input cost and the time of detection.
And voltage isolator 4 is added in the rear end of LCD driver module 1, then effectively can eliminate LCD drives the signal of pin output on the impact of rear class testing circuit, the voltage signal measured LCD and drive pin to export can be gathered more accurately, and then further improve the detection efficiency that LCD drives pin.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. a LCD voltage signal detection system, is characterized in that, comprises LCD driver module, detection module and indicating module, and wherein, described detection module comprises the single-chip microcomputer of single-chip microcomputer or the plug-in A/D conversion chip with A/D translation function; And described detection module is connected with described LCD driver module and described indicating module respectively.
2. LCD voltage signal detection system according to claim 1, is characterized in that, also comprise: voltage isolation module, and described voltage isolation module is connected between described LCD driver module and described detection module.
3. LCD voltage signal detection system according to claim 1 and 2, is characterized in that, described LCD driver module comprises the single-chip microcomputer with section-type LCD driving function.
4. LCD voltage signal detection system according to claim 1 and 2, is characterized in that, described indicating module comprise following one of at least:
LED, LED display, LCD display.
5. LCD voltage signal detection system according to claim 2, is characterized in that, described voltage isolation module comprises voltage follower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345726.4U CN204154781U (en) | 2014-06-27 | 2014-06-27 | LCD voltage signal detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420345726.4U CN204154781U (en) | 2014-06-27 | 2014-06-27 | LCD voltage signal detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154781U true CN204154781U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420345726.4U Expired - Fee Related CN204154781U (en) | 2014-06-27 | 2014-06-27 | LCD voltage signal detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204154781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060767A (en) * | 2019-12-28 | 2020-04-24 | 广东盈科电子有限公司 | ATE tester |
-
2014
- 2014-06-27 CN CN201420345726.4U patent/CN204154781U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111060767A (en) * | 2019-12-28 | 2020-04-24 | 广东盈科电子有限公司 | ATE tester |
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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: 20150211 Termination date: 20190627 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |