CN108172189A - A kind of fork liquid crystal display device for vehicle - Google Patents
A kind of fork liquid crystal display device for vehicle Download PDFInfo
- Publication number
- CN108172189A CN108172189A CN201810013462.5A CN201810013462A CN108172189A CN 108172189 A CN108172189 A CN 108172189A CN 201810013462 A CN201810013462 A CN 201810013462A CN 108172189 A CN108172189 A CN 108172189A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 20
- 230000001133 acceleration Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Liquid crystal display is one of common device of industrial circle, especially in vehicular field, for showing the parameter of vehicle and operating condition；But some vehicles are used to need special display in special environment；Therefore, a kind of fork truck display suitable for particular surroundings is set to be particularly important, the application is directed to the complex environment during fork truck use, devise the display that a kind of low-power consumption is stablized, when display device is during strenuous vibration, the image data normal transmission of display can be influenced when particularly display related data part generates abnormal influences display, memory is set to be stored and selectable shown to related data during display data transmissions for this problem the application, setting power circuit is used to enhance data signal power, reduce pixel charging time.
Description
Technical field
The present invention relates to field of liquid crystal, especially inside special industry field, such as high temperature, strenuous vibration
Application environment.
Background technology
With the development of liquid crystal display and industrial intelligent, advanced liquid crystal is all used gradually in many industrial circles
Information management system is instead of traditional instrument board；It specifically applies on fork truck, fork truck is widely used in modern industry
A kind of general special car, existing fork truck are equipped with greatly data display screen for showing the various numbers in fork truck operational process
According to, but due to more complicated, the particularly strong vibrations of the use environment of fork truck, it is therefore desirable to it is a to be practically applicable to the complexity ring
The liquid crystal display device and driving method in border.
Ensure the display effect of display by the driving method of the real time monitoring adjustment display device to external environment
Simultaneously and power consumption can be reduced.
Invention content
Content as elucidated before, the present invention provides it is a kind of can be relatively stable display related data while reduce
It shows the display device of power consumption, mainly enhances display by increasing power circuit in the source electrode drive circuit of liquid crystal display
The power consumption of data, so as to improve the speed to charge to pixel.
The invention particularly relates to a kind of source electrode drive circuit, which includes several source electrode drivers, storage
Device, power circuit, multiplex switch；Source drive electric appliance is connected with memory, and source electrode driver is connected aobvious by power circuit
Show panel；
The power circuit is used to enhance the power of data-signal；
When in normal scan period, source electrode driver data signal output directly drives liquid by one channel of multiplex switch
Crystal panel；
When in the special scan period, source electrode driver data signal output is by another channel of multiplex switch through overpower
Circuit drives liquid crystal display panel；
The special scan period include display blanking interval and display sweep time, wherein display blanking interval be in display sweep time it
Between；The scan period for wherein showing sweep time is the 1/2 of normal scan period.
The power circuit includes first resistor, the first connection signal of first resistor input terminal, second end connection the
One transistor Q1 grids, the first end connection power supply VCC of the first transistor Q1, second terminates the second of the 9th transistor Q9
Pole；Diode D1, the second end of the diode D1 input terminals connection first resistor R1, output terminal connection second transistor Q2's
Grid；The second transistor Q2 grids connect diode D1 second ends, first end connection power supply VCC, second end connection the tenth
Four transistor gates；
Third transistor Q3 first ends connect diode the second input terminals of D1, the connections of third transistor Q3 second low level
VSS, the third transistor Q3 grids connect the 4th transistor Q4, the 4th transistor Q4 first ends connection resistance R1 second
End；
4th transistor Q4 grids connect third transistor Q3 grids, and the 4th transistor Q4 first ends connect resistance second end, the
Four transistor Q4 second ends connection low level VSS；
5th transistor Q5 first ends connect power supply VCC, and the 5th transistor Q5 grids connect the 6th transistor Q6 grids, the
Five transistor Q5 second ends connect the 7th transistor first end；
5th transistor Q5 first ends connect power supply VCC, and the 5th transistor Q5 grids connect the 6th transistor Q6 grids, the
Five transistor Q5 second ends connect the 7th transistor Q7 first ends；
6th transistor Q6 first ends connect power supply VCC, and the 6th transistor Q6 grids connect the 5th transistor Q5 grids, the
Six transistor Q6 second ends connect the 8th transistor Q8 first ends；
The grid of 7th transistor Q7 connects the grid of the 8th transistor Q8, and the 7th transistor Q7 first ends connect the 5th transistor
The second end of Q5, the 7th transistor Q7 second ends connect the grid of the Q5 of the 5th transistor, connect the 9th transistor Q9 first ends,
8th transistor Q8 first ends connect the 6th transistor Q6 second ends, and the 8th transistor second end connects the 13rd transistor
The grid of Q13；
The first end connection Q7 second ends of 9th transistor, the grid of grid the tenth transistor of connection, the second of the 9th transistor
The first end of the 11st transistor of end connection；
The first end of tenth transistor Q10 connects the second end of the 8th transistor, and grid connects the 9th transistor, second end connection
Tenth two-transistor Q12；
The first end of 11st transistor Q11 connects the second end of the 9th transistor, second end connection low level VSS, and grid connects
Connect the grid of the tenth two-transistor Q12;
The grid of tenth two-transistor Q12 connects the grid of the 11st transistor Q11, and first end connects the tenth transistor Q10's
Second end, second end connection low level VSS；
The grid of 13rd transistor Q13 connects the second end of the 8th transistor, first end connection power supply VCC, second end connection
The first end of 14th transistor Q14；
The second end of 14th transistor Q14 grids connection second transistor Q2, the second end of first end connection Q13, the tenth
The second end connection low level VSS of four transistor Q14；
Capacitance C1 first ends connect the 13rd transistor Q13 grids, and second end connects the 13rd transistor Q13 second ends and output
End.
The power circuit can effectively increase the power of input end signal by adjusting supply voltage, and improve band
The ability of load.
Certainly, the concrete structure of the circuit of power forms in specification book attached drawing, and transistor belongs to thin film transistor (TFT)
（TFT）This belongs to well known technology in field of liquid crystal display and should be recognized by those skilled in the art personnel.
The application specifically further relates to a kind of liquid crystal display device, including source electrode drive circuit, gate driving circuit, sequential
Controller, sensor, microprocessor；The source electrode drive circuit includes：Multiple source electrode drivers include several source electrode drivers,
Memory, power circuit, multiplex switch K；Source drive electric appliance is connected with memory, source electrode driver by multiplex switch and
Power circuit connects display panel；
The power circuit is used to enhance the power of data-signal；
The memory is used to store current display data signal；
When in normal scan period, source electrode driver data signal output directly drives liquid by one channel of multiplex switch
Crystal panel；
When in the special scan period, source electrode driver data signal output is by another channel of multiplex switch through overpower
Circuit drives liquid crystal display panel；
The special scan period include display blanking interval and display sweep time, wherein display blanking interval be in display sweep time it
Between；The scan period for wherein showing sweep time is the 1/2 of normal scan period；
The control terminal of the microprocessor connection multiplexing switch K, sensor；The sensor is temperature sensor or acceleration
Sensor；
Normal scan period is：The temperature of microcomputer reads temperature sensor is minus 10-35 degrees Celsius or acceleration sensing
Device Z-direction acceleration is less than or equal to 20g；
The special scan period is：The temperature of microcomputer reads temperature sensor is more than 35 degrees Celsius or acceleration transducer
Z-direction acceleration is more than 20g.
Here 20g is a value, it is proper can be generally 5g in fork truck field with selected as 5g, 10g etc.；
Wherein, the phase does not carry out data-driven to display panel, can be specifically to source electrode drive circuit or gate driving electricity
Road is turned off or floating to data line and scan line；It can be a scan period or a scan period 1.5,
2nd, 3 times；
Further above-mentioned liquid crystal display device applies in fork truck intelligent display system.
Description of the drawings：
To the preferred embodiment of the present invention be described in detail by attached drawing below, it will help understand the object of the invention and advantage, wherein：
The display device of attached drawing 1, wherein 1 example the application of attached drawing.
The physical circuit figure of attached drawing 2, wherein 2 example the application power circuit of attached drawing.
Attached drawing 3, wherein attached drawing 3 are the scanning sequence figure of the application display device.
Attached drawing 4, wherein practice situation of 4 Example display devices of attached drawing on fork truck.
Specific embodiment：
Based on attached drawing, the present invention will be described.
Display device has common structure:Sequence controller, gate controller, display panel, source electrode drive circuit include
Multiple source electrode drivers；The present invention increases the storage being connect with multiple source electrode drivers on the basis of existing display device
Device, the multiplex switch K being connect with multiple source electrode driver data lines and the power circuit being connect with multiplex switch K, finally lead to
Over-power circuit connects display panel.
A sensor is further connected by processor, multiplex switch is controlled according to the signal of sensor, wherein
Sensor can be temperature sensor or acceleration transducer, the display in use environment is measured by acceleration transducer
Device shakes degree；Temperature sensor detects temperature, according to temperature and vibrations degree decides whether that turning off or on multiplexing opens
It closes, data signal transmission ability is enhanced by power circuit, so as to further reduce the time that pixel voltage rises, so as to carry
The stability of high data transmission and safety.
The transmission availability of signal can be seriously affected in the excessively high rugged environment of vibration processes or temperature, is adopted at this time
With shorter time tranfer signal, the stability of signal could be kept；Take at this time add in power circuit appropriateness enhancing or
Enhance gray scale voltage according to a certain percentage, the image scanning time is reduced so as to ensure validity that image is shown with this, gram
Take the influence brought in harsh environment.
Specific power circuit is as shown in Fig. 2, adjust the enhancing width of output power by adjusting the size of power supply VCC
Degree, resistance R1 can improve the carrying load ability of the circuit, prevent electric current reverse additionally by diode D1, finally by output
Capacitance C1 carries out voltage output, to achieve the effect that enhance pixel gray level voltage output.
Claims (2)
1. a kind of fork liquid crystal display device for vehicle, the display device includes source electrode drive circuit, gate driving circuit, sequential control
Device processed, microprocessor, sensor；
The source electrode drive circuit includes：Several source electrode drivers, memory, power circuit, multiplex switch；
Source electrode driver is connected with memory, and source electrode driver connects power circuit and display panel by multiplex switch；
Microprocessor connects sensor and the multiplex switch；
The liquid crystal display device is arranged on fork truck console；The sensor is acceleration transducer, and setting fork truck is being stopped
At vehicle foot pedal right 2-10CM；The power circuit is used to enhance the power of data-signal；
When liquid crystal display device is in normal scan period, source electrode driver data signal output is logical by multiplex switch one
Road directly drives liquid crystal display panel；
When liquid crystal display device is in the special scan period, source electrode driver data signal output is another by multiplex switch
Channel drives liquid crystal display panel through over-power circuit；
The special scan period include display blanking interval and display sweep time, wherein display blanking interval be in display sweep time it
Between；The scan period for wherein showing sweep time is the 1/2 of normal scan period.
2. fork liquid crystal display device for vehicle as described in claim 1, the power circuit includes first resistor, the first resistor
First connection signal input terminal, second end connection the first transistor Q1 grids, the first end connection electricity of the first transistor Q1
Source VCC, the second pole of the second the 9th transistor Q9 of termination；Diode D1, the diode D1 input terminals connection first resistor R1
Second end, the grid of output terminal connection second transistor Q2；The second transistor Q2 grids connect diode D1 second ends,
First end connects power supply VCC, and second end connects the 14th transistor gate；
Third transistor Q3 first ends connect diode the second input terminals of D1, the connections of third transistor Q3 second low level
VSS, the third transistor Q3 grids connect the 4th transistor Q4, the 4th transistor Q4 first ends connection resistance R1 second
End；
4th transistor Q4 grids connect third transistor Q3 grids, and the 4th transistor Q4 first ends connect resistance second end, the
Four transistor Q4 second ends connection low level VSS；
5th transistor Q5 first ends connect power supply VCC, and the 5th transistor Q5 grids connect the 6th transistor Q6 grids, the
Five transistor Q5 second ends connect the 7th transistor first end；
5th transistor Q5 first ends connect power supply VCC, and the 5th transistor Q5 grids connect the 6th transistor Q6 grids, the
Five transistor Q5 second ends connect the 7th transistor Q7 first ends；
6th transistor Q6 first ends connect power supply VCC, and the 6th transistor Q6 grids connect the 5th transistor Q5 grids, the
Six transistor Q6 second ends connect the 8th transistor Q8 first ends；
The grid of 7th transistor Q7 connects the grid of the 8th transistor Q8, and the 7th transistor Q7 first ends connect the 5th transistor
The second end of Q5, the 7th transistor Q7 second ends connect the grid of the Q5 of the 5th transistor, connect the 9th transistor Q9 first ends,
8th transistor Q8 first ends connect the 6th transistor Q6 second ends, and the 8th transistor second end connects the 13rd transistor
The grid of Q13；
The first end connection Q7 second ends of 9th transistor, the grid of grid the tenth transistor of connection, the second of the 9th transistor
The first end of the 11st transistor of end connection；
The first end of tenth transistor Q10 connects the second end of the 8th transistor, and grid connects the 9th transistor, second end connection
Tenth two-transistor Q12；
The first end of 11st transistor Q11 connects the second end of the 9th transistor, second end connection low level VSS, and grid connects
Connect the grid of the tenth two-transistor Q12;
The grid of tenth two-transistor Q12 connects the grid of the 11st transistor Q11, and first end connects the tenth transistor Q10's
Second end, second end connection low level VSS；
The grid of 13rd transistor Q13 connects the second end of the 8th transistor, first end connection power supply VCC, second end connection
The first end of 14th transistor Q14；
The second end of 14th transistor Q14 grids connection second transistor Q2, the second end of first end connection Q13, the tenth
The second end connection low level VSS of four transistor Q14；
Capacitance C1 first ends connect the 13rd transistor Q13 grids, and second end connects the 13rd transistor Q13 second ends and output
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013462.5A CN108172189B (en) | 2018-01-07 | 2018-01-07 | Liquid crystal display device for forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013462.5A CN108172189B (en) | 2018-01-07 | 2018-01-07 | Liquid crystal display device for forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108172189A true CN108172189A (en) | 2018-06-15 |
| CN108172189B CN108172189B (en) | 2020-05-05 |
Family
ID=62517471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810013462.5A Active CN108172189B (en) | 2018-01-07 | 2018-01-07 | Liquid crystal display device for forklift |
Country Status (1)
| Country | Link |
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| CN (1) | CN108172189B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028813A (en) * | 2019-12-31 | 2020-04-17 | 厦门天马微电子有限公司 | Driving method and driving device of display panel and display device |
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| CN105390104A (en) * | 2015-11-27 | 2016-03-09 | 惠州Tcl移动通信有限公司 | Liquid crystal display device, scan driver and driving display method |
| CN106023935A (en) * | 2016-07-27 | 2016-10-12 | 深圳市华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN107068097A (en) * | 2017-05-12 | 2017-08-18 | 惠科股份有限公司 | Display device and its electricity saving method |
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2018
- 2018-01-07 CN CN201810013462.5A patent/CN108172189B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664659A (en) * | 2004-03-05 | 2005-09-07 | Nec液晶技术株式会社 | Liquid crystal display device and method for driving the same |
| CN101587697A (en) * | 2008-05-21 | 2009-11-25 | 株式会社瑞萨科技 | Liquid crystal driving device |
| CN202084186U (en) * | 2011-06-09 | 2011-12-21 | 王丹净 | Bus distance display system |
| CN104916265A (en) * | 2015-07-03 | 2015-09-16 | 青岛海信电器股份有限公司 | Liquid crystal display processing method, apparatus and equipment |
| CN105390104A (en) * | 2015-11-27 | 2016-03-09 | 惠州Tcl移动通信有限公司 | Liquid crystal display device, scan driver and driving display method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111028813A (en) * | 2019-12-31 | 2020-04-17 | 厦门天马微电子有限公司 | Driving method and driving device of display panel and display device |
| CN111028813B (en) * | 2019-12-31 | 2022-05-13 | 厦门天马微电子有限公司 | Driving method and driving device of display panel and display device |
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| Publication number | Publication date |
|---|---|
| CN108172189B (en) | 2020-05-05 |
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Effective date of registration: 20200402 Address after: 318020 Houlin village, Chengjiang street, Huangyan District, Taizhou City, Zhejiang Province Applicant after: Zhejiang Huangyan Liming Industry Co.,Ltd. Address before: 215163 Suzhou hi tech Zone, Suzhou hi tech Zone, Hai Rong life square, room 1418, room 1418 Applicant before: SUZHOU QIANGCHUANG INTELLIGENT EQUIPMENT Co.,Ltd. |
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Denomination of invention: Liquid crystal display device for forklift Effective date of registration: 20211230 Granted publication date: 20200505 Pledgee: Taizhou Huangyan sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: Zhejiang Huangyan Liming Industry Co.,Ltd. Registration number: Y2021980017312 |
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Date of cancellation: 20220812 Granted publication date: 20200505 Pledgee: Taizhou Huangyan sub branch of Zhejiang Tailong Commercial Bank Co.,Ltd. Pledgor: Zhejiang Huangyan Liming Industry Co.,Ltd. Registration number: Y2021980017312 |
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Effective date of registration: 20221018 Address after: 318020 Houlin Village, Chengjiang Street, Huangyan District, Taizhou City, Zhejiang Province Patentee after: Zhu Zhaohui Address before: 318020 Houlin Village, Chengjiang Street, Huangyan District, Taizhou City, Zhejiang Province Patentee before: Zhejiang Huangyan Liming Industry Co.,Ltd. |
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