CN110148387A - A kind of the output compensation method and system of driving circuit - Google Patents
A kind of the output compensation method and system of driving circuit Download PDFInfo
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- CN110148387A CN110148387A CN201910423575.7A CN201910423575A CN110148387A CN 110148387 A CN110148387 A CN 110148387A CN 201910423575 A CN201910423575 A CN 201910423575A CN 110148387 A CN110148387 A CN 110148387A
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- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- 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)
- Liquid Crystal Display Device Control (AREA)
Abstract
Output compensation method and system this application discloses a kind of driving circuit, wherein, the output compensation method of the driving circuit is to the multiple-channel output voltage of driving circuit one by one compared with reference voltage, to obtain the offset of the output voltage Yu the reference voltage, and the output voltage is adjusted according to the offset, so that the offset of the output voltage and the reference voltage is less than preset error value, to realize when larger fluctuation occurs in the output voltage of driving circuit, the offset of output voltage and reference voltage is controlled into the purpose within preset error value, it solves since the fluctuation of the output voltage of driving circuit is larger, and make the problem of the display brightness unevenness of display panel.
Description
Technical field
This application involves field of display technology, a kind of output compensation method more specifically to driving circuit and are
System.
Background technique
For display panel, driving circuit is the Important Circuit for controlling its internal display pixel and being shown.
In display panel, the array arrangement that display pixel is arranged at M row × N, the quantity of display pixel determines display surface
The resolution ratio of plate.When driving these M rows × N column arrangement display pixel, driving circuit is the display in same a line line by line
Pixel provides scanning signal, is being received with controlling the TFT in display pixel (Thin Film Transistor, thin film transistor (TFT))
It is opened when to scanning signal, is shown to receive data-signal, all provide to go in the display pixel for all rows and sweep
After retouching signal, that is, the display of a frame image is completed, the display pixel for being hereafter returned as the first row provides scanning signal, carries out down
The display of one frame image.
But it finds in actual application, the amplitude of the scanning signal (output voltage) of driving circuit output will receive outer
The interference of portion or internal stray electric signal causes the amplitude fluctuations of output voltage larger, so that the display of display panel is bright
Degree is uneven, brings negative effect to the display effect of display panel.
Summary of the invention
In order to solve the above technical problems, output compensation method and system this application provides a kind of driving circuit, with solution
Certainly since the fluctuation of the output voltage of driving circuit is larger, and make the problem of the display brightness unevenness of display panel.
To realize the above-mentioned technical purpose, the embodiment of the present application provides following technical solution:
A kind of output compensation method of driving circuit, is applied to liquid crystal display panel, and the output of the driving circuit compensates
Method includes:
Obtain the multiple-channel output voltage of driving circuit；
By output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage and the reference voltage
Offset；
The output voltage is adjusted according to the offset, so that the offset of the output voltage and the reference voltage
Less than preset error value.
Optionally, it is described obtain driving circuit multiple-channel output voltage after, it is described by output voltage described in multichannel one by one
Before compared with reference voltage, further includes:
Judge whether the driving circuit is in default operating condition, if it is, by output voltage described in multichannel
One by one compared with reference voltage the step of, judges whether the driving circuit is in the step of default operating condition if not, returning
Suddenly；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting.
Optionally, described that the output voltage is adjusted according to the offset, so that the output voltage and the reference
The offset of voltage includes: less than preset error value
According to the size of the offset, output voltage regulated quantity is determined；
The output voltage is adjusted using the output voltage regulated quantity, so that the output voltage and the reference voltage
Offset be less than preset error value.
Optionally, it is described by output voltage described in multichannel one by one compared with reference voltage, with obtain the output voltage with
After the offset of the reference voltage, before the output voltage according to offset adjustment further include:
Store the corresponding relationship of the offset Yu the output voltage.
Optionally, described to include: according to the offset adjustment output voltage
The output voltage is adjusted according to the offset corresponding with the output voltage of storage.
A kind of output compensation system of driving circuit, is applied to liquid crystal display panel, and the output of the driving circuit compensates
System includes:
Voltage obtains module, for obtaining the multiple-channel output voltage of driving circuit；
Voltage comparison module, for by output voltage described in multichannel one by one compared with reference voltage, to obtain the output
The offset of voltage and the reference voltage；
Voltage regulator module, for adjusting the output voltage according to the offset, so that the output voltage and institute
The offset for stating reference voltage is less than preset error value.
Optionally, further includes:
Circuit control module, for judging whether the driving circuit is in default operating condition, if it is, triggering institute
Voltage comparison module is stated, if not, returning to the step of whether driving circuit is in default operating condition judged；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting.
Optionally, the voltage regulator module includes:
It adjusts direction-determining unit and determines output voltage regulated quantity for the size according to the offset；
Voltage cell is adjusted, for adjusting the output voltage using the output voltage regulated quantity, so that the output
The offset of voltage and the reference voltage is less than preset error value.
Optionally, further includes:
Memory module, for storing the corresponding relationship of the offset Yu the output voltage.
Optionally, the voltage regulator module adjusts the output voltage according to the offset and is specifically used for,
The output voltage is adjusted according to the offset corresponding with the output voltage of storage.
It can be seen from the above technical proposal that the embodiment of the present application provide a kind of driving circuit output compensation method and
System, wherein the output compensation method of the driving circuit to the multiple-channel output voltage of driving circuit one by one with reference voltage ratio
Compared with, to obtain the offset of the output voltage Yu the reference voltage, and the output voltage is adjusted according to the offset,
So that the offset of the output voltage and the reference voltage is less than preset error value, to realize the output electricity in driving circuit
When extruding existing larger fluctuation, the offset of output voltage and reference voltage is controlled into the purpose within preset error value, is solved
Since the fluctuation of the output voltage of driving circuit is larger, and make the problem of the display brightness unevenness of display panel.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of flow diagram of the output compensation method for driving circuit that one embodiment of the application provides；
Fig. 2 is the fluctuation schematic diagram of the output voltage of driving circuit in the prior art；
Fig. 3 is the driving circuit after the output compensation method for the reference driving circuit that one embodiment of the application provides
The fluctuation schematic diagram of output voltage；
Fig. 4 is a kind of process signal of the output compensation method for driving circuit that another embodiment of the application provides
Figure；
Fig. 5 is a kind of process signal of the output compensation method for driving circuit that another embodiment of the application provides
Figure；
Fig. 6 is a kind of process signal of the output compensation method for driving circuit that the further embodiment of the application provides
Figure；
Fig. 7 is a kind of process signal of the output compensation method for driving circuit that the alternative embodiment of the application provides
Figure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
The embodiment of the present application provides a kind of output compensation method of driving circuit, as shown in Figure 1, being applied to liquid crystal display
The output compensation method of panel, the driving circuit includes:
S101: the multiple-channel output voltage of driving circuit is obtained；
S102: by output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage and the ginseng
Examine the offset of voltage；
S103: adjusting the output voltage according to the offset, so that the output voltage and the reference voltage
Offset is less than preset error value.
The multiple-channel output voltage of the driving circuit, which refers to, to be exported to the scanning signal of multirow display pixel in display panel,
It is corresponding with a line display pixel per output voltage all the way.
In step s 102, the module that the reference voltage can provide burning voltage by one generates, the ginseng
Examining voltage can be Bandgap voltage or its voltage after amplifying and calibrating.
The comparing function of output voltage and reference voltage can be completed by comparator circuit, the output voltage and the ginseng
The offset for examining voltage can be the value that the output voltage subtracts reference voltage, is also possible to the reference voltage and subtracts output
The value of voltage, can also be the absolute value of the difference of the output voltage and the reference voltage, and the application does not limit this
It is fixed, specifically depending on actual conditions.
In addition, in step S102 and step S103, when complete to output voltage all the way compared with reference voltage with
And after adjustment, it can use exchanger circuit and realize that output voltage carries out the acquisition of offset and the tune of output voltage all the way under
It is whole.
As described in background, it finds in actual application, scanning signal (the output electricity of driving circuit output
Pressure) amplitude will receive the interference of the spuious electric signal of outside or inside, cause the amplitude fluctuations of output voltage larger, such as Fig. 2 institute
Show, fluctuation meeting of biggish output voltage so that display panel display brightness unevenness, brought to the display effect of display panel
Negative effect.
In the present embodiment, the output compensation method of the driving circuit to the multiple-channel output voltage of driving circuit one by one with
Reference voltage compares, and to obtain the offset of the output voltage Yu the reference voltage, and adjusts institute according to the offset
Output voltage is stated, so that the offset of the output voltage and the reference voltage is less than preset error value, is being driven with realizing
When larger fluctuation occurs in the output voltage of circuit, by the control of the offset of output voltage and reference voltage within preset error value
Purpose (refer to Fig. 3), solve since the fluctuation of the output voltage of driving circuit is larger, and make the display of display panel bright
Spend uneven problem.
In figure 2 and figure 3, the curve that label 10 identifies is the offset of output voltage and the reference voltage in high level
When threshold value, the curve that label 20 identifies is the offset of output voltage and the reference voltage in low level threshold value；Label
The signal of 30 marks is the random output offset of output voltage and the reference voltage.
It can be seen in fig. 2 that the output voltage of driving circuit in the prior art is it is possible that offset exceeds default threshold
The case where value, occurs.
And from figure 3, it can be seen that by driving circuit provided by the embodiments of the present application output compensation method amendment,
The output voltage of the driving circuit and the offset of reference voltage are limited within preset threshold.
On the basis of the above embodiments, in one embodiment of the application, as shown in figure 4, the driving circuit
Exporting compensation method includes:
S201: the multiple-channel output voltage of driving circuit is obtained；
S202: judging whether the driving circuit is in default operating condition, if it is, into will export described in multichannel
Voltage one by one compared with reference voltage the step of, if not, return judge whether the driving circuit is in default operating condition
The step of；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting；
S203: by output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage and the ginseng
Examine the offset of voltage；
S204: adjusting the output voltage according to the offset, so that the output voltage and the reference voltage
Offset is less than preset error value.
In the present embodiment, the output compensation method of the driving circuit increases step S202, so that the output is electric
Pressure is only carried out when the driving circuit is in default operating condition compared with reference voltage, to avoid output voltage and ginseng
Examine appearance the case where the comparison of voltage causes adverse effect to the normal operating conditions of the driving circuit.
On the basis of the above embodiments, in another embodiment of the application, as shown in figure 5, the driving circuit
Output compensation method include:
S301: the multiple-channel output voltage of driving circuit is obtained；
S302: judging whether the driving circuit is in default operating condition, if it is, into will export described in multichannel
Voltage one by one compared with reference voltage the step of, if not, return judge whether the driving circuit is in default operating condition
The step of；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting；
S303: by output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage and the ginseng
Examine the offset of voltage；
S304: according to the size of the offset, output voltage regulated quantity is determined；
S305: adjusting the output voltage using the output voltage regulated quantity, so that the output voltage and the ginseng
The offset for examining voltage is less than preset error value, so that the offset of the output voltage and the reference voltage is less than default miss
Difference.
In the present embodiment, provide it is a kind of the output voltage is adjusted according to the offset so that the output is electric
Pressure is less than the specific execution method of preset error value with the offset of the reference voltage, i.e., first according to the big of the offset
It is small, it determines output voltage regulated quantity, then adjusts the output voltage using the output voltage regulated quantity.
Storage may be implemented in the table in the corresponding relationship of the offset and output voltage regulated quantity, is also possible to foundation
The output voltage regulated quantity is calculated using offset in preset formula, and the application is to this and without limitation.
On the basis of the above embodiments, in another embodiment of the application, as shown in fig. 6, the driving circuit
Output compensation method include:
S401: the multiple-channel output voltage of driving circuit is obtained；
S402: judging whether the driving circuit is in default operating condition, if it is, into will export described in multichannel
Voltage one by one compared with reference voltage the step of, if not, return judge whether the driving circuit is in default operating condition
The step of；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting；
S403: by output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage and the ginseng
Examine the offset of voltage；
S404: the corresponding relationship of the offset Yu the output voltage is stored；
S405: according to the size of the offset, output voltage regulated quantity is determined；
S406: adjusting the output voltage using the output voltage regulated quantity, so that the output voltage and the ginseng
The offset for examining voltage is less than preset error value, so that the offset of the output voltage and the reference voltage is less than default miss
Difference.
In the present embodiment, after the offset for obtaining output voltage and the reference voltage, by offset with it is described
The corresponding relationship of output voltage is stored in memory, and the driving circuit is made to export process in the signal of subsequent certain time
In, the adjustment of multiple-channel output voltage can be carried out according to the corresponding relationship for the offset and output voltage being stored in memory.
Fig. 7 is referred to, the output compensation method of the driving circuit includes:
S501: the multiple-channel output voltage of driving circuit is obtained；
S502: judging whether the driving circuit is in default operating condition, if it is, into will export described in multichannel
Voltage one by one compared with reference voltage the step of, if not, return judge whether the driving circuit is in default operating condition
The step of；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting；
S503: by output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage and the ginseng
Examine the offset of voltage；
S504: the corresponding relationship of the offset Yu the output voltage is stored；
S505: according to the size of the offset, output voltage regulated quantity is determined；
S506: the output voltage is adjusted according to the offset corresponding with the output voltage of storage, so that described defeated
The offset of voltage and the reference voltage is less than preset error value out, so that the output voltage and the reference voltage is inclined
Shifting amount is less than preset error value.
The output compensation system of driving circuit provided by the embodiments of the present application is described below, driving described below
The output compensation system of circuit can correspond to each other reference with the output compensation method of above-described driving circuit.
Correspondingly, the embodiment of the present application provides a kind of output compensation system of driving circuit, it is applied to LCD display
The output compensation system of plate, the driving circuit includes:
Voltage obtains module, for obtaining the multiple-channel output voltage of driving circuit；
Voltage comparison module, for by output voltage described in multichannel one by one compared with reference voltage, to obtain the output
The offset of voltage and the reference voltage；
Voltage regulator module, for adjusting the output voltage according to the offset, so that the output voltage and institute
The offset for stating reference voltage is less than preset error value.
Optionally, further includes:
Circuit control module, for judging whether the driving circuit is in default operating condition, if it is, triggering institute
Voltage comparison module is stated, if not, returning to the step of whether driving circuit is in default operating condition judged；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting.
Optionally, the voltage regulator module includes:
It adjusts direction-determining unit and determines output voltage regulated quantity for the size according to the offset；
Voltage cell is adjusted, for adjusting the output voltage using the output voltage regulated quantity, so that the output
The offset of voltage and the reference voltage is less than preset error value.
Optionally, further includes:
Memory module, for storing the corresponding relationship of the offset Yu the output voltage.
Optionally, the voltage regulator module adjusts the output voltage according to the offset and is specifically used for,
The output voltage is adjusted according to the offset corresponding with the output voltage of storage.
In conclusion the embodiment of the present application provides the output compensation method and system of a kind of driving circuit, wherein described
The output compensation method of driving circuit to the multiple-channel output voltage of driving circuit one by one compared with reference voltage, it is described defeated to obtain
The offset of voltage and the reference voltage out, and the output voltage is adjusted according to the offset, so that the output is electric
Pressure and the offset of the reference voltage are less than preset error value, larger fluctuation occur in the output voltage of driving circuit to realize
When, the offset of output voltage and reference voltage is controlled into the purpose within preset error value, is solved due to driving circuit
Output voltage fluctuation it is larger, and make the problem of the display brightness unevenness of display panel.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of output compensation method of driving circuit, which is characterized in that it is applied to liquid crystal display panel, the driving circuit
Exporting compensation method includes:
Obtain the multiple-channel output voltage of driving circuit；
By output voltage described in multichannel one by one compared with reference voltage, to obtain the inclined of the output voltage and the reference voltage
Shifting amount；
The output voltage is adjusted according to the offset, so that the offset of the output voltage and the reference voltage is less than
Preset error value.
2. the output compensation method of driving circuit according to claim 1, which is characterized in that the acquisition driving circuit
After multiple-channel output voltage, it is described by output voltage described in multichannel one by one compared with reference voltage before, further includes:
Judge whether the driving circuit is in default operating condition, if it is, by output voltage described in multichannel one by one
The step of compared with reference voltage, if not, returning to the step of whether driving circuit is in default operating condition judged；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting.
3. the output compensation method of driving circuit according to claim 1, which is characterized in that described according to the offset
The output voltage is adjusted, so that the offset of the output voltage and the reference voltage includes: less than preset error value
According to the size of the offset, output voltage regulated quantity is determined；
The output voltage is adjusted using the output voltage regulated quantity, so that the output voltage and the reference voltage is inclined
Shifting amount is less than preset error value.
4. the output compensation method of driving circuit according to claim 1, which is characterized in that described to be exported described in multichannel
Voltage is one by one compared with reference voltage, after the offset to obtain the output voltage and the reference voltage, the basis
The offset adjusts before the output voltage further include:
Store the corresponding relationship of the offset Yu the output voltage.
5. the output compensation method of driving circuit according to claim 4, which is characterized in that described according to the offset
Adjusting the output voltage includes:
The output voltage is adjusted according to the offset corresponding with the output voltage of storage.
6. a kind of output compensation system of driving circuit, which is characterized in that it is applied to liquid crystal display panel, the driving circuit
Exporting compensation system includes:
Voltage obtains module, for obtaining the multiple-channel output voltage of driving circuit；
Voltage comparison module, for by output voltage described in multichannel one by one compared with reference voltage, to obtain the output voltage
With the offset of the reference voltage；
Voltage regulator module, for adjusting the output voltage according to the offset, so that the output voltage and the ginseng
The offset for examining voltage is less than preset error value.
7. the output compensation system of driving circuit according to claim 6, which is characterized in that further include:
Circuit control module, for judging whether the driving circuit is in default operating condition, if it is, triggering the electricity
Comparison module is pressed, if not, returning to the step of whether driving circuit is in default operating condition judged；
The default operating condition are as follows: the driving circuit is in frame and Frame switch interval or in during voltage starting.
8. the output compensation system of driving circuit according to claim 6, which is characterized in that the voltage regulator module packet
It includes:
It adjusts direction-determining unit and determines output voltage regulated quantity for the size according to the offset；
Voltage cell is adjusted, for adjusting the output voltage using the output voltage regulated quantity, so that the output voltage
It is less than preset error value with the offset of the reference voltage.
9. the output compensation system of driving circuit according to claim 6, which is characterized in that further include:
Memory module, for storing the corresponding relationship of the offset Yu the output voltage.
10. the output compensation system of driving circuit according to claim 9, which is characterized in that the voltage regulator module,
The output voltage is adjusted according to the offset to be specifically used for,
The output voltage is adjusted according to the offset corresponding with the output voltage of storage.
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| CN201910423575.7A CN110148387A (en) | 2019-05-21 | 2019-05-21 | A kind of the output compensation method and system of driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111161692A (en) * | 2020-02-18 | 2020-05-15 | 合肥鑫晟光电科技有限公司 | Power supply voltage compensation circuit, method, integrated power supply management circuit and display device |
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| CN107104583A (en) * | 2016-02-19 | 2017-08-29 | 恩智浦有限公司 | Power switch circuit |
| US20180018913A1 (en) * | 2016-07-14 | 2018-01-18 | Samsung Electronics Co., Ltd. | Display panel and a driving module of the display panel |
| CN106710526A (en) * | 2017-02-23 | 2017-05-24 | 京东方科技集团股份有限公司 | Pixel circuit and driving tube threshold voltage compensation method thereof and display device |
| CN109147667A (en) * | 2018-09-21 | 2019-01-04 | 京东方科技集团股份有限公司 | Voltage compensating device and method, array substrate, display device |
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| CN111161692A (en) * | 2020-02-18 | 2020-05-15 | 合肥鑫晟光电科技有限公司 | Power supply voltage compensation circuit, method, integrated power supply management circuit and display device |
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