CN202034002U - Segment liquid crystal tester - Google Patents
Segment liquid crystal tester Download PDFInfo
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- CN202034002U CN202034002U CN2010202940964U CN201020294096U CN202034002U CN 202034002 U CN202034002 U CN 202034002U CN 2010202940964 U CN2010202940964 U CN 2010202940964U CN 201020294096 U CN201020294096 U CN 201020294096U CN 202034002 U CN202034002 U CN 202034002U
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Abstract
The utility model relates to a segment liquid crystal tester, which comprises a power supply circuit. 5V direct voltage is output to supply power for a microprogrammed control unit (MCU), a liquid crystal communication (COM) digital display, a liquid crystal segment digital display and a liquid crystal driving control chip after voltage reduction, rectification, voltage stabilization and filtering are carried out on 220V alternating current by the power supply circuit; a corresponding signal containing duty cycle and bias voltage information is output by the MCU according to the key data setting of the liquid crystal COM digital display and the liquid crystal segment digital display; the signal containing the duty cycle and the bias voltage information is provided for the liquid crystal driving control chip; a corresponding wave form is output to liquid crystal to be tested by the liquid crystal driving control chip according to the duty cycle and the bias voltage information; and all figures are displayed on the liquid crystal to be tested immediately or are circularly displayed in sequence. The segment liquid crystal tester has a relatively low cost, is suitable for popularization and application and is capable of testing multiple segment liquid crystal parameters.
Description
Technical field:
The utility model relates to the liquid crystal technical field of measurement and test, more specifically to the parameter testing instrument of segmentation liquid crystal.
Background technology:
Since economic crisis in 08 year, global liquid crystal use amount significantly raises year by year, and the segmentation liquid crystal has been widely used in multiple electric/electronic device and the device with its abundant demonstration, cheap cost.Its weak point is: 1, segmentation liquid crystal installation test has only liquid crystal manufacturer to use instrumentation aptitude test liquid crystal.2, for vast user, comprise the assembler of numerous liquid crystal, there is inconvenience greatly in test liquid crystal aspect, every money liquid crystal all need be made a cover frock or wiring board test, very trouble.3, the versatility of frock of Zhi Zuoing or wiring board tester is very poor, can't promote the use of.4, still not having better, the lower-cost segmentation liquid crystal of versatility testing tool at present on the market sells.
The utility model content:
The purpose of this utility model is exactly the deficiency at prior art, and provide a kind of segmentation liquid crystal tester, it can test out 2～4COM, the logic figure of the various combination segmentation liquid crystal display of 2～20SEG, but and the kenel of identification segmentation liquid crystal (DISPLAY TYPE), display mode (DISPLAY MODE), view directions (VIEWING DIRECTION), polaroid type (POLARIZER MODE), type of drive parameters such as (DRIVING MODE), can pick out the operating voltage (1.5V～5V) of liquid crystal.Whether display graphics that can two blocks of liquid crystal of contrast test etc. are consistent, and cost is cheaper, is fit to promote the use of.
Technology solution of the present utility model is as follows:
A kind of segmentation liquid crystal tester, comprise power circuit, power circuit is exported the 220V alternating current that the 5V DC voltage counts display for MCU control module, liquid crystal COM, liquid crystal SEG counts display, LCD Driver and Controller power supply after step-down, rectification, voltage stabilizing, filtering;
The MCU control module is counted display, liquid crystal SEG according to liquid crystal COM and is counted the button data of display and output is set contains dutycycle and bias voltage information signal accordingly, this contains dutycycle and the bias voltage information signal offers LCD Driver and Controller, LCD Driver and Controller is given liquid crystal to be measured according to dutycycle and bias voltage information output respective waveforms, demonstrates all figures on the liquid crystal to be measured at once or allows the figure demonstration that circulates successively.
Described LCD Driver and Controller is a HT1621 type lcd drive chip, and HT1621 type lcd drive chip is electrically connected two groups of 12 liquid crystal interfaces.
Described MCU control module adopts Samsung S3F84K4 single-chip microcomputer, and it is provided with three scanning buttons and promptly exports or disconnect the COM digital display and show button, output or disconnect the SEG digital display and show button, output or disconnect lcd drive chip HT1621 and drive liquid crystal display key.
The beneficial effects of the utility model are:
1, by this tester, can test out 2～4COM, the logic figure of the various combination segmentation liquid crystal display of 2～20SEG, but and the kenel (DISPLAYTYPE) of identification segmentation liquid crystal, display mode (DISPLAY MODE), view directions (VIEWING DIRECTION), polaroid type (POLARIZER MODE), type of drive parameters such as (DRIVING MODE), can pick out the operating voltage (1.5V～5V) of liquid crystal.
2, HT1621 type lcd drive chip is electrically connected two groups of liquid crystal interfaces, so after connecting two blocks of liquid crystal, whether display graphics that can two blocks of liquid crystal of contrast test etc. are consistent.This tester can greatly make things convenient for the liquid crystal test job, improve test accuracy and efficient.This tester has only a control panel to constitute in addition, so cost is also cheaper, is fit to promote the use of.
3, HT1621 type lcd drive chip is electrically connected the various combination of liquid crystals that two groups of 12 liquid crystal interfaces can meet 2～4COM, 2～20SEG, takes into account two kinds of pin distances commonly used of 2mm and 2.54mm simultaneously, we can say that interface is very abundant.This tester can singly be surveyed a liquid crystal, also can test two liquid crystal simultaneously, to improve testing efficiency.
Description of drawings:
Fig. 1 is a circuit frame principle figure of the present utility model
Fig. 2 is the circuit diagram of the power circuit in the circuit diagram of the present utility model
Fig. 3 is the circuit diagram of the button part in the circuit diagram of the present utility model
Fig. 4 is that the COM in the circuit diagram of the present utility model counts display partial circuit figure
Fig. 5 is the circuit diagram of the liquid crystal drive part in the circuit diagram of the present utility model
Fig. 6 is the liquid crystal interface structural representation
Fig. 7 is the circuit diagram that SEG counts the display part
Embodiment:
Embodiment: see shown in Fig. 1～7, a kind of segmentation liquid crystal tester, comprise power circuit A, power circuit A exports the 220V alternating current that the 5V DC voltage counts display for MCU control module, liquid crystal COM, liquid crystal SEG counts display, LCD Driver and Controller U2 power supply after step-down, rectification, voltage stabilizing, filtering;
The MCU control module is counted display, liquid crystal SEG according to liquid crystal COM and is counted the button data of display and output is set contains dutycycle and bias voltage information signal accordingly, this contains dutycycle and the bias voltage information signal offers LCD Driver and Controller U2, LCD Driver and Controller U2 gives liquid crystal to be measured according to dutycycle and bias voltage information output respective waveforms, demonstrates all figures on the liquid crystal to be measured at once or allows the figure demonstration that circulates successively.
Described LCD Driver and Controller U2 is a HT1621 type lcd drive chip, and HT1621 type lcd drive chip is electrically connected two groups of 12 liquid crystal interfaces.
Described MCU control module adopts Samsung S3F84K4 single-chip microcomputer, it be provided with three scanning buttons promptly export or disconnect the COM digital display show button COM, output or disconnect the SE6 digital display show button,, output or disconnect lcd drive chip HT1621 and drive liquid crystal display key START/STOP.Press output or disconnect lcd drive chip HT1621 drive liquid crystal display key START/STOP key after, on the liquid crystal each section beginning successively circulation show, press the START/STOP key once more after, liquid crystal recovers to demonstrate all figures.
Claims (3)
1. a segmentation liquid crystal tester comprises power circuit (A), it is characterized in that:
Power circuit (A) is exported the 220V alternating current that the 5V DC voltage counts display for MCU control module, liquid crystal COM, liquid crystal SEG counts display, LCD Driver and Controller (U2) power supply after step-down, rectification, voltage stabilizing, filtering;
The MCU control module is counted display, liquid crystal SEG according to liquid crystal COM and is counted the button data of display and output is set contains dutycycle and bias voltage information signal accordingly, this contains dutycycle and the bias voltage information signal offers LCD Driver and Controller (U2), LCD Driver and Controller (U2) is given liquid crystal to be measured according to dutycycle and bias voltage information output respective waveforms, demonstrates all figures on the liquid crystal to be measured at once or allows the figure demonstration that circulates successively.
2. a kind of segmentation liquid crystal tester according to claim 1 is characterized in that: LCD Driver and Controller (U2) is a HT1621 type lcd drive chip, and HT1621 type lcd drive chip is electrically connected two groups of 12 liquid crystal interfaces.
3. a kind of segmentation liquid crystal tester according to claim 1 and 2, it is characterized in that: the MCU control module adopts Samsung S3F84K4 single-chip microcomputer, it is provided with three scanning buttons and promptly exports or disconnect the COM digital display and show button, output or disconnect the SEG digital display and show button, output or disconnect lcd drive chip and drive liquid crystal display key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202940964U CN202034002U (en) | 2010-08-17 | 2010-08-17 | Segment liquid crystal tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202940964U CN202034002U (en) | 2010-08-17 | 2010-08-17 | Segment liquid crystal tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202034002U true CN202034002U (en) | 2011-11-09 |
Family
ID=44896291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202940964U Expired - Fee Related CN202034002U (en) | 2010-08-17 | 2010-08-17 | Segment liquid crystal tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202034002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854615A (en) * | 2012-12-06 | 2014-06-11 | 苏州工业园区新宏博通讯科技有限公司 | Stroke segment type liquid crystal display screen software driving method |
| CN106782257A (en) * | 2015-11-20 | 2017-05-31 | 晶门科技有限公司 | Apparatus and method for driving electric paper display |
| CN107689220A (en) * | 2017-09-30 | 2018-02-13 | 惠州华阳通用电子有限公司 | A kind of section-type LCD drive device and method |
-
2010
- 2010-08-17 CN CN2010202940964U patent/CN202034002U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854615A (en) * | 2012-12-06 | 2014-06-11 | 苏州工业园区新宏博通讯科技有限公司 | Stroke segment type liquid crystal display screen software driving method |
| CN106782257A (en) * | 2015-11-20 | 2017-05-31 | 晶门科技有限公司 | Apparatus and method for driving electric paper display |
| CN106782257B (en) * | 2015-11-20 | 2020-03-17 | 晶门科技有限公司 | Apparatus and method for driving electronic paper display |
| CN107689220A (en) * | 2017-09-30 | 2018-02-13 | 惠州华阳通用电子有限公司 | A kind of section-type LCD drive device and method |
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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: 20111109 Termination date: 20170817 |