CN103366657B - Flicker regulates system - Google Patents
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- CN103366657B CN103366657B CN201310300873.XA CN201310300873A CN103366657B CN 103366657 B CN103366657 B CN 103366657B CN 201310300873 A CN201310300873 A CN 201310300873A CN 103366657 B CN103366657 B CN 103366657B
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 66
- 238000012360 testing method Methods 0.000 claims abstract description 41
- 238000012545 processing Methods 0.000 claims abstract description 27
- 230000003993 interaction Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000008859 change Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
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- 238000003199 nucleic acid amplification method Methods 0.000 description 3
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- 239000013078 crystal Substances 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of Flicker and regulate system, for solving existing structure, structure complex hardware high in cost of production problem and design.Described Flicker regulates system and includes: test cell, including optical-electrical converter and the signal processing unit that is connected with described optical-electrical converter；Described test cell is in order to measure and to export the test signal relevant to the flicker degree of screen to be measured；Described main controller includes receiver module, regulating command generation module and regulating command output module；Described receiver module is in order to receive described test signal；Described regulating command generation module is in order to be analyzed processing to described test signal according to pre-set programs, and generates regulating command；Described regulating command output module in order to export screen to be measured to control the adjustment of Vcom voltage in screen to be measured by described regulating command.Flicker of the present invention regulates system, has simple in construction, and cost is low, it is achieved advantage easy and applied widely.
Description
Technical field
The present invention relates to display field, particularly relate to a kind of Flicker and regulate system.
Background technology
At present, in the production process of liquid crystal display screen, it is necessary to carry out the adjustment of Flicker (flicker degree), so that the flicker of picture reaches within preset range value to improve the wellness of viewing impression.Current Flicker regulates instrument two kinds:
The first: the Flicker adjustment cutter head that manual adjustments instrument is special, by human eye, manual adjustments also sees whether that adjustment completes, adopt Flicker to regulate cutter head, and it is poor that adjustment efficiency is low, adjustment precision is stablized.
The second: be automatically adjusted instrument Flicker automatic regulating system, including Flikcer probe controller, computer and interface board etc., parts are constituted.Flicker probe is for gathering flash signal from screen to be measured, by main controller to gather signal analyzing and processing, again by the computer analyzing and processing according to main controller, control the amendment of Vcom voltage in screen Vcom depositor to be measured by interface board, thus realizing the adjustment of Flicker.The existing instrument that is automatically adjusted, relative to manual adjustments instrument, improves adjustment efficiency and regulates precision stability, but there is problems in that
Described Flicker pops one's head in, including lens, shade, regulating and point to the structure such as ring and photoelectric switching circuit structure, structure member is many, and in order to ensure that higher precision requires over the device periodically Flicker probes such as adjustment sensing ring and carries out school zero, safeguard relatively complicated.
Summary of the invention
(1) goal of the invention
For the problems referred to above, it is desirable to provide a kind of regulate efficiency height, regulate that precision stability is high and simple in construction, Flicker that hardware cost is low regulate system.
(2) technical scheme
For reaching above-mentioned purpose, Flicker of the present invention regulates system and includes:
Test cell, including optical-electrical converter and the signal processing unit that is connected with described optical-electrical converter, in order to measure and to export the test signal relevant to the flicker degree of screen to be measured；
Main controller, including receiver module, regulating command generation module and regulating command output module；
Described receiver module is in order to receive described test signal；
Described regulating command generation module is in order to be analyzed processing to described test signal according to pre-set programs, and generates regulating command；
Described regulating command output module in order to export screen to be measured to control the adjustment of Vcom voltage in screen to be measured by described regulating command.
Preferably,
Described optical-electrical converter is photodiode；
Resistance that described signal processing unit includes being connected to described photodiode two ends and the signal processing module with described resistor coupled in parallel.
Preferably, described Flicker adjustment system also includes regulating command adapter unit；
Described regulating command adapter unit is for being connected with described regulating command output module, including polytype data output interface, in order to be connected with dissimilar screen to be measured.
Preferably, described regulating command adapter unit specifically includes IIC interface and single port EBI.
Preferably, described Flicker adjustment system also includes host computer and connects unit；
Described host computer connects unit in order to the data interaction between described main controller and host computer.
Preferably, described host computer connects unit is that USB connects unit；
Described USB connects unit and includes the USB power supply circuits for inputting electric energy and the USB data transmission circuit for data interaction.
Preferably, described Flicker adjustment system also includes electric pressure converter；
Described electric pressure converter input is connected with the outfan of described USB power supply circuits, and outfan is connected with described main controller and described regulating command adapter unit respectively.
Preferably, described Flicker adjustment system also includes in order to the signal generator to screen input test picture to be measured.
(3) Flicker of the present invention regulates the beneficial effect of system
nullFlicker of the present invention regulates system，Only include optical-electrical converter and signal processing unit，Described optical-electrical converter is utilized to obtain the signal relevant to flicker degree of screen to be measured，Signal is exported by described signal amplifier，Namely the collection of signal is completed，And by the analyzing and processing output regulating command of main controller，Thus controlling to adjust the Vcom control circuit adjustment to Vcom voltage in screen to be measured，Achieve being automatically adjusted Flicker，Manual adjustment is carried out relative to adopting manual adjustments instrument，There is adjustment efficiency high，Regulate stability will not induce one and different，Different because of the duty of personnel，Thus the stability of degree of regulation is high，Relative to traditional automatic regulating system，Test cell only includes optical-electrical converter and signal processing unit，Eliminate such as lens、Shade，Regulate structures such as pointing to ring，Thus parts are few，Simple in construction，Hardware cost is low，And equipment in use without equally carrying out periodically correction to ensure to regulate accurately result to traditional Flicker adjustment system to parts such as such as lens，Thus safeguarding easier.
Accompanying drawing explanation
Fig. 1 is the structural representation regulating system of the Flicker described in the embodiment of the present invention；
Fig. 2 is the structural representation of the main controller described in the embodiment of the present invention；
Fig. 3 is test cell structural representation described in the embodiment of the present invention；
Fig. 4 is the flow chart regulating system change Vcom of Flicker described in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with Figure of description and embodiment, Flicker of the present invention is regulated system to be described further.
Flicker degree in liquid crystal display screen is relevant to the size of the Vcom voltage value in the Vcom depositor in its T-con chip timing controller, and described Vcom voltage is excessive or the too small flicker excessive (namely Flicker value is excessive) that all can cause liquid crystal display screen is such that it is able to by adjusting the problem that the size of Vcom voltage reduces liquid crystal display screen excessive flicker.
System is regulated at Flicker of the present invention, according to the problems referred to above, test cell directly adopts photoelectricity to turn device and signal processing unit, described optical-electrical converter is in order to convert the optical signal that screen to be measured exports to the signal of telecommunication, process again through described signal processing unit, realize the conversion of signal, amplification etc. to process, output directly characterizes the test signal of described screen flicker degree to be measured, lens are included relative to traditional, the Flicker measurement apparatus of complicated photoelectric conversion part, having simple in construction, hardware cost is low, it is achieved easy advantage.Flicker of the present invention regulates system, the test signal according to described Flicker measurement apparatus, decides whether to change the size of the knots modification of Vcom voltage and Vcom in screen to be measured by comparing the analyzing and processing such as calculating, it is achieved simple.Described Vcom voltage size is relevant to the flicker degree of screen to be measured, and Vcom voltage is excessive or too small all will cause the flicker of screen to be measured, therefore when the flicker of screen to be measured is excessive, can pass through to change Vcom and reduce the flicker degree of screen to be measured.
As it is shown in figure 1, the present embodiment Flicker regulates system includes measuring unit 8 and main controller 4.
Described test cell 8 includes optical-electrical converter and the signal processing unit connected to described optical-electrical converter in order to measure and to export the test signal relevant with the flicker degree of screen 10 to be measured；When screen to be measured is tested, output picture is generally screen flash picture, optical-electrical converter receives the light of the output of described screen to be measured, convert current signal or voltage signal output to, it is achieved thereby that the collection of described screen flicker degree signal to be measured, by described signal processing unit, through conversion, amplifying to export and arriving main controller 4；
As in figure 2 it is shown, described main controller 4 includes receiver module 401, regulating command generation module 402 and regulating command output module 403；
Described receiver module 401, in order to receive described test signal；
Described regulating command generation module 402, in order to be analyzed processing to described test signal according to pre-set programs, and generates regulating command；
Described regulating command output module 403, in order to export screen to be measured to control the adjustment of Vcom voltage in screen to be measured by described regulating command.
Concrete described regulating command generation module 402, in order to receive described test signal, it is judged that whether described test signal is not more than desired value, if more than, generate the regulating command of the Vcom voltage changing described screen to be measured；If being not more than, do not generate described regulating command；
Described regulating command output module 403, it is connected with screen to be measured when regulating Flicker, receive described regulating command, and export in the Vcom control circuit of described screen to be measured, make described Vcom control circuit rewrite the Vcom in Vcom depositor according to described regulating command.
Flicker described in the present embodiment regulates system, described test cell only includes optical-electrical converter and signal processing unit, the relatively conventional Flicker probe including lens, shade and regulating the parts such as sensing ring, structure member is few, simple in construction, and the unit price of parts is low, thus total price is low thus have the advantage that hardware cost is low simultaneously.
Further, the present embodiment additionally provides the structure of a kind of preferred test cell, specific as follows:
As it is shown on figure 3, in described Flicker adjustment system, the described optical-electrical converter in described test cell is photodiode 1；
Described signal processing unit in described test cell includes the resistance 2 connecting described photodiode 1 two ends and the signal processing module 3 being connected in parallel on described resistance 2 two ends.
Described photodiode 1 will receive the optical signal of varying strength of described screen to be measured output, and absorb described light energy and convert electric current output to, by being connected to the resistance 2 at its two ends, externally export in the form of a voltage.The optical signal flicker of screen to be measured output, then the light signal strength exported changes, thus the value of the signal of telecommunication generated by the conversion of described photodiode and interconversion rate also change, it is achieved thereby that the sign of the flicker degree of screen to be measured.Described signal processing module 3 receives described voltage, is amplified waiting processing, in external output.Described signal processing module 3 can be amplifier or amplifier cascade structure, it is also possible to is integrated circuit or packaged power consumption amplification chip.Photoelectric diode described in concrete application process is a technology maturation, be widely used, element simple for production, with low cost, the collection of signal again it has been only capable of by single photoelectric diode, instead of the photoelectric conversion parts such as the lens in traditional F licker adjustment system, shade, thus simplifying structure, but still complete the collection about screen flash signal to be measured.
Further, as it is shown in figure 1, described Flicker regulates system also includes regulating command adapter unit 5；
Described regulating command adapter unit 5 is for being connected with shown regulating command output module, including polytype data output interface, in order to be connected with dissimilar screen to be measured.The setting of the regulating command converting unit 5 by increasing in the present embodiment, the Flicker described in the present embodiment is made to regulate the screen to be measured that system can apply to have distinct interface, it is not only limited to the screen to be measured of a kind of interface type, so that the scope of application that the Flicker described in the present embodiment regulates system is wider, go for different manufacturers, different types of screen to be measured, thus practicality and compatibility are strong.
Described regulating command adapter unit 5 includes at least one interface, in order to export in described screen to be measured by the regulating command of output described in described regulating command output module, in order to the change of Vcom voltage.
Specifically, described regulating command adapter unit 5 includes IIC interface 51 and single port EBI 52.In the Flicker adjustment process of screen to be measured, select different interfaces as required.
Described IIC interface 51 and single bus interface 52 all have multiple concrete implementation structure, provide the concrete structure of a kind of IIC interface 51 and single bus interface 52 in the present embodiment respectively.
Described IIC interface 51 include two transistors, Flicker adjust circuit one and with 4 output pins；Two described coupled in parallel are connected to institute Flicker and adjust the front end of circuit, and described output pin is connected to described Flicker and adjusts the rear end of circuit.
Described single bus interface 52 includes D/A converting circuit, amplification stabilizing circuit and Flicker successively and adjusts circuit two and 3 output pins, and wherein, output pin is used for being directly connected to screen to be measured.
For forming the described digital-to-analogue shifting circuit of described single bus interface 52, it is preferable that chip DS3502, DS3502 are the digital potentiometers of a 7bit, being equivalent to a decoder, the digital signal of master converts analog signal output in the future；
Further, described Flicker adjustment system also includes host computer and connects unit 6；
Described host computer connects unit 6 one end and is connected with described main controller 4, in order to the data interaction between described main controller and host computer, and the concrete adjustment program updated by host computer such as input and the adjustment parameter of desired value as described in comprising.
In concrete production process, the detection of screen 10 to be measured and adjustment not only include Flicker and regulate, also include other detection and adjustment, thus being typically provided with computer on station, therefore the setting of unit 6 is connected at host computer, data interaction can be carried out, the function such as including adjustment program and the renewal regulating parameter, the correction of burned and system itself with described host computer.
Further, described host computer connects unit 6 and connects unit for USB；First being provided with the USB data transmission circuit for data interaction in USB connection unit, USB is a compatibility data-interface strong, widely used, is equipped with above-mentioned interface as desk-top, flat board and mobile notebook, thus practical.Meanwhile, USB power supply circuits are set by connecting in unit at described USB, it is also possible to connect unit by USB and realize the power supply to system, thus an interface achieves two kinds of functions, there is delicate structure, the advantage that the utilization rate of interface is high.
Described USB connects unit and includes the USB power supply circuits for inputting electric energy and the USB data transmission circuit for data interaction.
In concrete implementation process, described Flicker regulates system can be passed through to arrange built-in power and realize power supply to system, it is also possible to as described in the embodiment by arranging power interface to be connected with extraneous power supply, by external world's power source charges.Described power interface can be as described in the embodiment be integrated with data transmission and function of supplying power USB connect unit, it is also possible to be independent power interface, it is achieved mode have multiple.
As the further improvement of the present embodiment, described Flicker regulates system and also includes electric pressure converter 7；
Described electric pressure converter 7 input is connected with described USB power supply circuits outfan, and outfan is connected with described main controller 4 and described regulating command adapter unit 5 respectively.
In the Flicker adjustment system described in the present embodiment, described regulating command adapter unit 5 is provided with multiple interfaces, when realizing the control signal output changing Vcom voltage, the function of power consumption is needed including data process etc., therefore it is additionally arranged electric pressure converter in the present embodiment, convert the voltage received from described USB power supply circuits outfan to magnitude of voltage needed for each interface, thus realize power supply, again improve practicality.Concrete as light current chip, conventional voltage Vdd includes the voltages such as 12V, 5V, 3.3V, and the voltage of USB power supply circuits input is likely one of them value, therefore need to convert corresponding magnitude of voltage to.
As the improvement again of the present embodiment, described Flicker regulates the described main controller 4 of system and also includes externally exporting the output unit regulating result.
Concrete described output unit include display screen, buzzer, signal lights therein one or more.Described display screen preferentially adopts liquid crystal display screen, it is possible to test the size of signal, comparative result and Vcom voltage each time for showing.Described buzzer may be used for informing, by different sound, the adjustment result that debugging person is different, or simple providing regulates failed warning；Described signal lights by whether flicker or the color of signal lights that lights, can be distinguished and regulate result, thus the equipment that improves again is intelligent, and the result knowing adjustment that user can be easier.
When concrete implementation Flicker regulates, screen to be measured is probably and has assembled display screen, its internal burning automatically test pictures, some single glass (i.e. Opencell) to be assembled are also had to need to be provided test pictures by extra signal generator, therefore the present embodiment Flicker regulate system, be also provided with to the signal generator to screen input test picture to be measured.
Provide below the Flicker described in the present embodiment and regulate the control method of system:
First, the main controller comparison according to test signal with desired value, computing again through other preset algorithm will finally show that controls the regulating command that Vcom voltage changes, the control circuit of described screen to be measured, according to described adjustment signal, changes the Vcom voltage in Vcom depositor on its T-con chip.The Vcom voltage of described screen to be measured changes once, then need to carry out once the measurement correction of described Flicker, until detection test signal less than or equal to desired value till.Screen to be measured due to different manufacturers and different model, it is likely to arrange different data-interfaces, therefore in order to the Flicker realized described in the present embodiment regulates the purpose that systematic difference scope is big, the control signal of the change of the different interface crossed output Vcom voltage described regulating command adapter unit 5 arranges multiple interfaces, thus can be selected according to the demand of screen to be measured when concrete application.
Fig. 4 is a kind of flow process being adjusted regulating system of the Flicker described in the present embodiment: in concrete implementation process, can adopt and periodically extract maximum in described test signal, comparison by the maximum in described test signal Yu described desired value, judge whether to need the Vcom voltage in further modification screen to be measured, can also pass through periodically to extract the difference between the maxima and minima in described test signal, judge whether to need to revise described Vcom voltage again through comparing, to reach the purpose being automatically adjusted, relative to traditional manual adjustments, there is adjustment efficiency high, regulate precision advantages of higher.
When the concrete Vcom voltage changing described screen to be measured, the mode that coarse adjustment and fine tuning combine can be adopted, Vcom voltage is adjusted by coarse adjustment with certain bigger step value, Vcom voltage is adjusted by fine tuning with less step value, the adjustment often carrying out a Vcom voltage just once judges, until the test signal received is less than desired value.Concrete carry out coarse adjustment or fine tuning can pass through threshold decision, then use coarse adjustment when being used for the difference of test signal and the desired value compared more than threshold value, otherwise use fine tuning.
In concrete implementation process, it is also possible to the positive and negative of the difference tested between signal and desired value according to being used for comparing determines that forward regulates or reversely regulates；Forward regulates and increases the Vcom voltage write in described screen to be measured, reversely regulates and reduces the Vcom voltage write in described screen to be measured.Forward regulates and reverse adjustment all can be applicable in described coarse adjustment and fine tuning.
The concrete structure of described main controller can include master chip, memory element, crystal oscillator and reset circuit, display, work filling display lamp and buzzer etc..Described memory module can be flash or EPROM or EEPROM；EPROM or EEPROM in preferred programmable storage device, for stored adjustment program or and at least include the adjustment parameter of described desired value, EPROM or EEPROM is adopted can repeatedly to revise use, thus changing different adjustment programs as required and regulating parameter, thus the easy switching realized between different machine, expand the scope of application.
Described main controller can be single-chip microcomputer, dsp controller or PLC, the powerful computer big relative to traditional adjustment system bulk, the advantage with compact.
Summary, Flicker described in the embodiment of the present invention regulates system, has simple in construction, realizes simplicity, and hardware cost is low, and volume is little, it is simple to carry, it is adaptable to different manufacturers, model the debugging of screen to be measured.
Embodiment of above is merely to illustrate the present invention; and it is not limitation of the present invention; those of ordinary skill about technical field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all equivalent technical schemes fall within scope of the invention, and the scope of patent protection of the present invention should be defined by the claims.
Claims (6)
1. a Flicker regulates system, it is characterised in that described Flicker regulates system and includes:
Test cell, including optical-electrical converter and the signal processing unit that is connected with described optical-electrical converter, in order to measure and to export the test signal relevant to the flicker degree of screen to be measured；
Main controller, including receiver module, regulating command generation module and regulating command output module；
Described receiver module is in order to receive described test signal；
Described regulating command generation module is in order to be analyzed processing to described test signal according to pre-set programs, and generates regulating command；
Described regulating command output module in order to export screen to be measured to control the adjustment of Vcom voltage in screen to be measured by described regulating command；
Wherein, described optical-electrical converter is photodiode；
Resistance that described signal processing unit includes being connected to described photodiode two ends and the signal processing module with described resistor coupled in parallel；
Described Flicker regulates system and also includes regulating command adapter unit；
Described regulating command adapter unit is for being connected with described regulating command output module, including polytype data output interface, in order to be connected with dissimilar screen to be measured.
2. Flicker according to claim 1 regulates system, it is characterised in that described regulating command adapter unit specifically includes IIC interface and single port EBI.
3. Flicker according to claim 2 regulates system, it is characterised in that described Flicker regulates system and also includes host computer connection unit；
Described host computer connects unit in order to the data interaction between described main controller and host computer.
4. Flicker according to claim 3 regulates system, it is characterised in that it is that USB connects unit that described host computer connects unit；
Described USB connects unit and includes the USB power supply circuits for inputting electric energy and the USB data transmission circuit for data interaction.
5. Flicker according to claim 4 regulates system, it is characterised in that described Flicker regulates system and also includes electric pressure converter；
Described electric pressure converter input is connected with the outfan of described USB power supply circuits, and outfan is connected with described main controller and described regulating command adapter unit respectively.
6. Flicker according to claim 1 regulates system, it is characterised in that described Flicker regulates system and also includes in order to the signal generator to screen input test picture to be measured.
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| CN103676231B (en) * | 2013-11-08 | 2016-03-30 | 深圳市华星光电技术有限公司 | A kind of method for measuring Flicker value of liquid crystal module and device |
| CN103594066B (en) * | 2013-11-08 | 2016-05-04 | 武汉精立电子技术有限公司 | Liquid crystal module Autoflicker automatic calibrating device |
| CN103714791B (en) * | 2013-12-20 | 2015-12-30 | 武汉精立电子技术有限公司 | LCD screen Gamma-Flicker comprehensive correction instrument |
| CN104517554B (en) * | 2014-12-17 | 2017-07-07 | 武汉精测电子技术股份有限公司 | MIPI liquid crystal module Vcom calibration apparatus and method based on FPGA |
| CN104570426B (en) * | 2015-02-10 | 2017-11-14 | 武汉精测电子技术股份有限公司 | The VCOM data recording methods of calibration of liquid crystal module |
| CN106019647B (en) * | 2016-05-05 | 2019-06-07 | 武汉精测电子集团股份有限公司 | Liquid crystal module 1-wire writing system and method |
| CN106898321B (en) * | 2017-03-23 | 2019-10-01 | 京东方科技集团股份有限公司 | Flash adjustment device and flash adjustment method, display equipment |
| CN107911746A (en) * | 2017-11-28 | 2018-04-13 | 四川长虹电器股份有限公司 | 4k LCD TV flicker debugging apparatus and method |
| CN108845438A (en) * | 2018-04-19 | 2018-11-20 | 苏州华兴源创电子科技有限公司 | LCD panel test device and method |
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