CN105788479A - Method for replacing segment code type LCD with LEDs - Google Patents
Method for replacing segment code type LCD with LEDs Download PDFInfo
- Publication number
- CN105788479A CN105788479A CN201610304397.2A CN201610304397A CN105788479A CN 105788479 A CN105788479 A CN 105788479A CN 201610304397 A CN201610304397 A CN 201610304397A CN 105788479 A CN105788479 A CN 105788479A
- Authority
- CN
- China
- Prior art keywords
- led
- display
- lcd
- replacing
- segment code
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
Abstract
The invention discloses a method for replacing a segment code type LCD with LEDs. The method comprises the following steps: corresponding terminals P1-P10 to original LCD pins PIN5-PIN14 for digital display driving; replacing with a conventional LCD chip; replacing other range and unit display with LED display; amplifying a signal current; performing constant amplitude conversion on a voltage signal with an LM324 voltage comparator, wherein current outputted by LM324 meets the requirement for driving small-sized LED lightening and R is a current-limiting resistor connected with the LEDs in series; connecting each signal wire of an original control panel to an operational amplifier input end; directly driving the LED display by an output end of an operational amplifier, wherein the voltages at the two ends of each LED are the voltage differences between a driving pin P and a public pin COM; replacing each original LCD segment code with one LED to form a new display; shaping a printed board in the original size and shape of LCD; fixedly arraying and welding elements; and marking the display of each LED indicator. The method provided by the invention has the advantages that the normal use of a high-precision instrument or apparatus with damaged display can be recovered and a large amount of cost can be saved.
Description
Technical field
The present invention relates to a kind of LED method replacing segment code type LCD display.
Background technology
The many high-precision meters of modern ships/industrial equipment adopt LCD liquid crystal digital to show, particularly some multiple range import check meters, its LCD display often adopts the nonstandard product that producer's cover half makes, as shown in Figure 1, by MSP430F437 chip drives, containing 4 COM ends, adopt 1/4DUTY1/3BIAS signal, display voltage 3V, owing to LCD display is nonstandard irregular, it is difficult to commercially find replacement product, unless die sinking customization, for individual criterion instrument and equipment, die sinking customizes it is also apparent that be uneconomic, once damaged in collision can only change a whole set of products, expensive, and core detection, control all can normally use, LCD display only accounts for about the 1% of cost.
Summary of the invention
The purpose of the present invention, is in that to overcome above-mentioned limitation, the high precision instrument of display damage or instrument can be allowed to recover normal and use thus providing a kind of, saving the method by LED replacement segment code type LCD display of great amount of cost.
nullThe purpose of the present invention is achieved through the following technical solutions: a kind of LED replaces the method for segment code type LCD display，Step is that terminals P1 ~ P10 is corresponding to former LCD pin PIN5 ~ PIN14，Drive for digital-scroll technique，Replace with common LCD wafer，Other range、Unit shows then replaces with LED display，Need to carry out the amplification of signal code，Adopt LM324 voltage comparator that voltage signal is carried out constant amplitude conversion，The electric current of LM324 output meets the requirement driving compact LED to light，R is current-limiting resistance and LED strip connection，Every holding wire of former panel is connected amplifier input，The outfan of amplifier directly drives LED to show，LED both end voltage is drive the voltage difference between foot P and public foot COM，Each LED replaces original mono-segment encode of LCD，Form new display，Former LCD size shape is made again with one piece of printed board，By fixing for components and parts arrangement welding，The display of the good each LED light of mark again.
Preferably, current-limiting resistance R and each LED strip connection.
Preferably, add an audion including a CMOS tube and preside over the circuit of the on and off switch that circuit controls
In sum, the invention have the advantages that the high precision instrument that display can be allowed to damage or instrument are recovered normal and used, save great amount of cost.
Accompanying drawing explanation
Fig. 1 is former LCD display liquid crystal segment code type display schematic diagram；
Fig. 2 is the circuit theory diagrams of the present invention；
Fig. 3 is the display schematic diagram of the present invention.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment is only used for explaining the present invention, is not intended that limiting the scope of the present invention.
nullA kind of method that LED replaces segment code type LCD display as shown in Figure 2，Step is that terminals P1 ~ P10 is corresponding to former LCD pin PIN5 ~ PIN14，Drive for digital-scroll technique，Replace being made without signal processing with common LCD wafer，Other range、Unit shows then replaces with LED display，Need to carry out the amplification of signal code，Adopt LM324 voltage comparator that voltage signal is carried out constant amplitude conversion，The electric current of LM324 output meets the requirement driving compact LED to light，R is current-limiting resistance and each LED strip connection，The every holding wire (PIN15 ~ PIN28) of former panel is connected amplifier input (P11 ~ PN)，The outfan of amplifier directly drives LED to show，LED both end voltage is drive the voltage difference between foot P and public foot COM，Each LED replaces original mono-segment encode of LCD，Form new display，Owing to electric current is only done adaptive requirement by the signal conversion of design，Voltage、Waveform keeps original constant，Former LCD size shape is made again with one piece of printed board，By fixing for components and parts arrangement welding，The display of the good each LED light of mark is as shown in Figure 3 again，Consider that some hand-held tester power supplys adopt battery to power，For extending battery，The circuit (in Fig. 2 shown in dashed box) of one on and off switch of specialized designs in figure，Add an audion by a CMOS tube and preside over circuit control，After instrument is opened，Former display drive signals at least provides ± signal of 1V，CMOS tube switch motion can be triggered，Make audion pulsed ON，Power to three-terminal voltage-stabilizing power supply，Output is to circuit work power.
Claims (3)
- null1. the method by LED replacement segment code type LCD display，It is characterized in that: step is that terminals P1 ~ P10 is corresponding to former LCD pin PIN5 ~ PIN14，Drive for digital-scroll technique，Replace with common LCD wafer，Other range、Unit shows then replaces with LED display，Need to carry out the amplification of signal code，Adopt LM324 voltage comparator that voltage signal is carried out constant amplitude conversion，The electric current of LM324 output meets the requirement driving compact LED to light，R is current-limiting resistance and LED strip connection，Every holding wire of former panel is connected amplifier input，The outfan of amplifier directly drives LED to show，LED both end voltage is drive the voltage difference between foot P and public foot COM，Each LED replaces original mono-segment encode of LCD，Form new display，Former LCD size shape is made again with one piece of printed board，By fixing for components and parts arrangement welding，The display of the good each LED light of mark again.
- 2. the method that LED according to claim 1 replaces segment code type LCD display, it is characterised in that: described current-limiting resistance R and each LED strip connection.
- 3. the method that LED according to claim 1 replaces segment code type LCD display, it is characterised in that: include a CMOS tube and add the circuit that the on and off switch of circuit control presided over by an audion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610304397.2A CN105788479A (en) | 2016-05-10 | 2016-05-10 | Method for replacing segment code type LCD with LEDs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610304397.2A CN105788479A (en) | 2016-05-10 | 2016-05-10 | Method for replacing segment code type LCD with LEDs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105788479A true CN105788479A (en) | 2016-07-20 |
Family
ID=56401929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610304397.2A Pending CN105788479A (en) | 2016-05-10 | 2016-05-10 | Method for replacing segment code type LCD with LEDs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788479A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680553A (en) * | 2017-11-16 | 2018-02-09 | 黑龙江天有为电子有限责任公司 | GTG display segment code liquid crystal display and its GTG display methods |
Citations (11)
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|---|---|---|---|---|
| CN201156252Y (en) * | 2008-02-29 | 2008-11-26 | 伊玛精密电子（苏州）有限公司 | Multifunctional portable manual setting device |
| US20100045471A1 (en) * | 2008-08-19 | 2010-02-25 | Meyers Timothy Meyer | Leak detection and control system and mehtod |
| CN201568797U (en) * | 2010-01-04 | 2010-09-01 | 京东方科技集团股份有限公司 | Led lamp strip |
| CN201893081U (en) * | 2010-03-26 | 2011-07-06 | 浙江正泰电器股份有限公司 | Intelligent controller display |
| CN201909811U (en) * | 2010-12-31 | 2011-07-27 | 利尔达科技有限公司 | Three-phase watt-hour meter based on MSP430 singlechip |
| CN102750119A (en) * | 2011-02-10 | 2012-10-24 | 通用电气公司 | Methods and systems for controlling an information display |
| CN203102812U (en) * | 2013-01-21 | 2013-07-31 | 南京深科博业电气股份有限公司 | Display screen |
| CN203428032U (en) * | 2013-05-13 | 2014-02-12 | 陕西理工学院 | DC-DC linear piecewise converter used for airplane power source system |
| CN203812465U (en) * | 2014-05-05 | 2014-09-03 | 北京电子科技学院 | Development board of information safety engineering experiment platform |
| CN204965135U (en) * | 2015-07-01 | 2016-01-13 | 陈惠� | Be applied to COMS on accurate control circuit |
| CN204989315U (en) * | 2015-08-06 | 2016-01-20 | 云南电网有限责任公司红河供电局 | Threephase cable phase place checking apparatus |
-
2016
- 2016-05-10 CN CN201610304397.2A patent/CN105788479A/en active Pending
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| CN201156252Y (en) * | 2008-02-29 | 2008-11-26 | 伊玛精密电子（苏州）有限公司 | Multifunctional portable manual setting device |
| US20100045471A1 (en) * | 2008-08-19 | 2010-02-25 | Meyers Timothy Meyer | Leak detection and control system and mehtod |
| CN201568797U (en) * | 2010-01-04 | 2010-09-01 | 京东方科技集团股份有限公司 | Led lamp strip |
| CN201893081U (en) * | 2010-03-26 | 2011-07-06 | 浙江正泰电器股份有限公司 | Intelligent controller display |
| CN201909811U (en) * | 2010-12-31 | 2011-07-27 | 利尔达科技有限公司 | Three-phase watt-hour meter based on MSP430 singlechip |
| CN102750119A (en) * | 2011-02-10 | 2012-10-24 | 通用电气公司 | Methods and systems for controlling an information display |
| CN203102812U (en) * | 2013-01-21 | 2013-07-31 | 南京深科博业电气股份有限公司 | Display screen |
| CN203428032U (en) * | 2013-05-13 | 2014-02-12 | 陕西理工学院 | DC-DC linear piecewise converter used for airplane power source system |
| CN203812465U (en) * | 2014-05-05 | 2014-09-03 | 北京电子科技学院 | Development board of information safety engineering experiment platform |
| CN204965135U (en) * | 2015-07-01 | 2016-01-13 | 陈惠� | Be applied to COMS on accurate control circuit |
| CN204989315U (en) * | 2015-08-06 | 2016-01-20 | 云南电网有限责任公司红河供电局 | Threephase cable phase place checking apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107680553A (en) * | 2017-11-16 | 2018-02-09 | 黑龙江天有为电子有限责任公司 | GTG display segment code liquid crystal display and its GTG display methods |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |
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| RJ01 | Rejection of invention patent application after publication |