CN104658500B - A kind of compensation method of common electric voltage and system - Google Patents
A kind of compensation method of common electric voltage and system Download PDFInfo
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- CN104658500B CN104658500B CN201510096994.6A CN201510096994A CN104658500B CN 104658500 B CN104658500 B CN 104658500B CN 201510096994 A CN201510096994 A CN 201510096994A CN 104658500 B CN104658500 B CN 104658500B
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- electric voltage
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Abstract
The invention discloses a kind of compensation method of common electric voltage and system, in the compensation method, when the difference of common electric voltage and reference voltage on public electrode wire is more than or equal to the first threshold for setting, special frame of the currently displaying picture with setting are compared；When similarity degree between currently displaying picture and the special frame of setting meets pre-conditioned, the common electric voltage on public electrode wire is compensated；So, when the difference of common electric voltage and reference voltage on public electrode wire is more than or equal to the first threshold for setting, need the similarity degree between currently displaying picture and the special frame of setting to meet pre-conditioned ability to compensate the common electric voltage on public electrode wire, otherwise the common electric voltage on public electrode wire is not compensated, so, the purpose of the power consumption that liquid crystal display is effectively reduced on the premise of the display quality of liquid crystal display is improved has been reached by saving unnecessary compensation.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of compensation method and the system of common electric voltage.
Background technology
In existing liquid crystal display, the common electric voltage being loaded into due to common voltage generation circuit on public electrode wire
Easily affected by other voltages and the phenomenon being raised and lowered occurred, so as to the picture that liquid crystal display can be caused to show goes out
The problems such as now shake, image retention, display GTG exception and cross-talk, the display quality of liquid crystal display is affected, therefore, in liquid crystal
Common electric voltage compensation circuit is typically provided with showing device.
During liquid crystal display shows each frame picture, the common electric voltage and reference voltage on public electrode wire
Difference when being more than or equal to default threshold value, common electric voltage compensation circuit and common voltage generation circuit are jointly to public electrode wire
Common electric voltage after loading compensation, with avoid the picture that liquid crystal display shows occur shake, image retention, display GTG exception and
The problems such as cross-talk.However, when liquid crystal display shows some pictures, for example：The insensitive picture of human eye and common electric voltage coupling
The less picture of effect is closed, even if the common electric voltage on public electrode wire is more than or equal to default threshold with the difference of reference voltage
Value, human eye cannot also observe the shake that display picture occurs, image retention, show GTG exception and the problems such as cross-talk, therefore, it is right
These pictures carry out common electric voltage compensation does not have any substantial meaning, can increase the power consumption of liquid crystal display on the contrary.
Therefore, how its power consumption is reduced on the premise of the display quality of liquid crystal display is improved, be people in the art
The technical problem of member's urgent need to resolve.
The content of the invention
In view of this, compensation method and the system of a kind of common electric voltage are embodiments provided, to improve liquid
Its power consumption is reduced on the premise of the display quality of crystal display.
Therefore, a kind of compensation method of common electric voltage is embodiments provided, including：
When the difference of common electric voltage and reference voltage on public electrode wire is more than or equal to the first threshold for setting, ought
Front display picture is compared with the special frame of setting；
When similarity degree between currently displaying picture and the special frame of setting meets pre-conditioned, to public electrode
Common electric voltage on line is compensated.
In a kind of possible implementation, in said method provided in an embodiment of the present invention, currently displaying picture with
Similarity degree between the special frame of setting meets pre-conditioned, specifically includes：
Area ratio in currently displaying picture shared by the region similar to the special frame of setting is more than or equal to setting
Second Threshold.
In a kind of possible implementation, in said method provided in an embodiment of the present invention, in currently displaying picture
The region to setting special frame it is similar, specifically include：
The ratio of the gray scale in the region in currently displaying picture and difference and total gray scale of the gray scale of the special frame of setting
Threeth threshold value of the value less than setting.
The embodiment of the present invention additionally provides a kind of compensation system of common electric voltage, including：
Sequential control circuit, is more than or equal to setting for difference of the common electric voltage on public electrode wire with reference voltage
First threshold when, by currently displaying picture with setting special frame be compared, and currently displaying picture with setting
When similarity degree between special frame meets pre-conditioned, control common electric voltage compensation circuit is to public on public electrode wire
Voltage is compensated；
Common electric voltage compensation circuit, meets for the similarity degree between currently displaying picture and the special frame of setting
When pre-conditioned, the control for receiving the sequential control circuit is compensated to the common electric voltage on public electrode wire.
In a kind of possible implementation, in said system provided in an embodiment of the present invention, the common electric voltage is mended
Circuit is repaid, is more than or is waited specifically for the area ratio shared by similar to the special frame of setting region in currently displaying picture
When the Second Threshold of setting, the common electric voltage on public electrode wire is compensated.
In a kind of possible implementation, in said system provided in an embodiment of the present invention, the Second Threshold is
0.25。
In a kind of possible implementation, in said system provided in an embodiment of the present invention, the common electric voltage is mended
Repay circuit, specifically for the region in currently displaying picture gray scale with setting special frame gray scale difference with it is total
When the ratio of gray scale is less than three threshold value for setting, the common electric voltage on public electrode wire is compensated.
In a kind of possible implementation, in said system provided in an embodiment of the present invention, the 3rd threshold value is
0.5。
In a kind of possible implementation, in said system provided in an embodiment of the present invention, the special frame, bag
Include：Green picture, 1dot pictures, 2dot pictures and 1+2dot pictures.
The compensation method of above-mentioned common electric voltage provided in an embodiment of the present invention and system, in the compensation method, in common electrical
When the difference of common electric voltage and reference voltage on polar curve is more than or equal to the first threshold for setting, by currently displaying picture and setting
Special frame be compared；Similarity degree between currently displaying picture and the special frame of setting meets pre-conditioned
When, the common electric voltage on public electrode wire is compensated；So, the common electric voltage on public electrode wire and reference voltage it
When difference is more than or equal to the first threshold for setting, need the similarity degree between currently displaying picture and the special frame of setting full
The pre-conditioned ability of foot is compensated to the common electric voltage on public electrode wire, otherwise the common electrical on public electrode wire is not pressed into
Row compensation, so, has been reached on the premise of the display quality of liquid crystal display is improved effectively by saving unnecessary compensation
Ground reduces the purpose of the power consumption of liquid crystal display.
Description of the drawings
Fig. 1 is the flow chart of the compensation method of common electric voltage provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the compensation system of common electric voltage provided in an embodiment of the present invention；
Fig. 3 is the structural representation that the compensation system of common electric voltage in present example one realizes compensation method.
Specific embodiment
Below in conjunction with the accompanying drawings, to common electric voltage provided in an embodiment of the present invention compensation method and the specific embodiment party of system
Formula is described in detail.Obviously, described embodiment is a part of embodiment of the present invention, rather than the enforcement of whole
Example.Based on described embodiments of the invention, those of ordinary skill in the art are obtained on the premise of without the need for creative work
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
The compensation method of a kind of common electric voltage provided in an embodiment of the present invention, as shown in figure 1, comprising the steps：
First threshold of the difference of S101, the common electric voltage on public electrode wire and reference voltage more than or equal to setting
When, special frame of the currently displaying picture with setting is compared；
S102, judge whether the similarity degree between currently displaying picture and the special frame of setting meets pre-conditioned；
If so, then execution step S103；If it is not, then execution step S104；
S103, the common electric voltage on public electrode wire is compensated；
S104, the common electric voltage on public electrode wire is not compensated.
Said method provided in an embodiment of the present invention, due to the common electric voltage on public electrode wire and the difference of reference voltage
During more than or equal to the first threshold for setting, the similarity degree between currently displaying picture and the special frame of setting is needed to meet
Pre-conditioned ability is compensated to the common electric voltage on public electrode wire, otherwise the common electric voltage on public electrode wire is not carried out
Compensation, so, has been reached on the premise of the display quality of liquid crystal display is improved effectively by the compensation for saving unnecessary
Reduce the purpose of the power consumption of liquid crystal display.
In the specific implementation, in said method provided in an embodiment of the present invention, the special frame of setting can specifically be wrapped
Include：Green picture, 1dot pictures, 2dot pictures and 1+2dot pictures；Wherein, green picture is human eye sensitivity's picture, and 1dot draws
Face, 2dot pictures and 1+2dot pictures are the obvious pictures of common electric voltage coupling effect.Certainly, the special frame of setting is simultaneously
Above-mentioned four kinds of pictures are not limited to, the obvious picture of other common electric voltage coupling effects can also be included, here is not limited
It is fixed.
In the specific implementation, step S102 in said method provided in an embodiment of the present invention, currently displaying picture with set
Similarity degree between fixed special frame meets pre-conditioned, is specifically as follows in currently displaying picture the special picture with setting
Second Threshold of the area ratio shared by the similar region in face more than or equal to setting, wherein, the area ratio shared by the region is should
The area ratio of the area in region and currently displaying picture.Specifically, Second Threshold is set as into 0.25 typically, i.e. the default bar
Part be in currently displaying picture more than 25% region to setting special frame it is similar.
In the specific implementation, step S102 in said method provided in an embodiment of the present invention, in currently displaying picture
Above-mentioned zone is similar to the special frame of setting, gray scale and the setting of the above-mentioned zone being specifically as follows in currently displaying picture
Threeth threshold value of the ratio of the difference of the gray scale of special frame and total gray scale less than setting, for example, currently displaying picture and setting
The gray scale of special frame is 0-255, then total gray scale is 256.Specifically, the 3rd threshold value is set as into 0.5 typically, i.e., it is current aobvious
Show that the gray scale in picture more than 25% region and the difference of gray scale of the special frame of setting are less than 0.5 with the ratio of total gray scale.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of compensation system of common electric voltage, such as Fig. 2 institutes
Show, including：
Sequential control circuit 201, is more than or equal to for difference of the common electric voltage on public electrode wire with reference voltage
During the first threshold of setting, by currently displaying picture with setting special frame be compared, and currently displaying picture with set
When similarity degree between fixed special frame meets pre-conditioned, control common electric voltage compensation circuit is on public electrode wire
Common electric voltage is compensated；Specifically, the model of sequential control circuit 201 can be NT71895QG-100；
Common electric voltage compensation circuit 202, for the similarity degree between currently displaying picture and the special frame of setting
When meeting pre-conditioned, the control for receiving sequential control circuit is compensated to the common electric voltage on public electrode wire.
Said system provided in an embodiment of the present invention, due to the common electric voltage on public electrode wire and the difference of reference voltage
During more than or equal to the first threshold for setting, the similarity degree between currently displaying picture and the special frame of setting is needed to meet
Pre-conditioned, sequential control circuit can just control common electric voltage compensation circuit and the common electric voltage on public electrode wire is mended
Repay, otherwise sequential control circuit can control common electric voltage compensation circuit and the common electric voltage on public electrode wire not compensated,
So, liquid is effectively reduced on the premise of the display quality of liquid crystal display is improved by saving unnecessary compensation and reached
The purpose of the power consumption of crystal display.
In the specific implementation, in said system provided in an embodiment of the present invention, common electric voltage compensation circuit, specifically for
Second threshold of the area ratio in currently displaying picture shared by the region similar to the special frame of setting more than or equal to setting
During value, the common electric voltage on public electrode wire is compensated, wherein, the area ratio shared by the region be the region area with
The area ratio of currently displaying picture.
In the specific implementation, in said system provided in an embodiment of the present invention, Second Threshold is set as into 0.25 typically
It is preferred, i.e., the pre-conditioned region in currently displaying picture more than 25% is similar to the special frame of setting.
In the specific implementation, in said system provided in an embodiment of the present invention, common electric voltage compensation circuit, specifically for
The gray scale of the above-mentioned zone in currently displaying picture is less than with the ratio of total gray scale with the difference of the gray scale of the special frame of setting
During three threshold value of setting, compensate, for example, currently displaying picture and the spy for setting to the common electric voltage on public electrode wire
The gray scale of different picture is 0-255, then total gray scale is 256.
In the specific implementation, in said system provided in an embodiment of the present invention, the 3rd threshold value is set as into that 0.5 is typically
It is good, i.e., the ratio of the gray scale in more than 25% region and difference and total gray scale of the gray scale of the special frame of setting in currently displaying picture
Value is less than 0.5.
In the specific implementation, in said system provided in an embodiment of the present invention, the special frame of setting can specifically be wrapped
Include：Green picture, 1dot pictures, 2dot pictures and 1+2dot pictures；Wherein, green picture is human eye sensitivity's picture, and 1dot draws
Face, 2dot pictures and 1+2dot pictures are the obvious pictures of common electric voltage coupling effect.Specifically, can be by above-mentioned four kinds
Picture is pre-deposited in the buffer of sequential control circuit, and these four pictures are set as special frame, in public electrode wire
On common electric voltage and reference voltage difference more than or equal to setting first threshold when, sequential control circuit can will be currently displaying
The special frame of the setting pre-deposited in picture and buffer is compared, in the special frame of currently displaying picture and setting
Between similarity degree when meeting pre-conditioned, sequential control circuit can control common electric voltage compensation circuit on public electrode wire
Common electric voltage compensate.
Certainly, in said system provided in an embodiment of the present invention, pre-deposit in the buffer of sequential control circuit
Picture is not limited to above-mentioned four kinds of pictures, can also include the obvious picture of other common electric voltage coupling effects, here
Do not limit.
Compensation method and system with a specific example to above-mentioned common electric voltage provided in an embodiment of the present invention below
Be embodied as be described in detail.
Example one：As shown in figure 3, sequential control circuit 201 is realized compensating common electric voltage by switching transistor 203
The control of circuit 202, is illustrated so that switching transistor 203 is N-type switching transistor as an example, the compensation system of common electric voltage below
Unite by the following method to realize the compensation to common electric voltage：
1st, when the difference of the common electric voltage and reference voltage on public electrode wire is more than or equal to the first threshold for setting, when
The special picture of the setting that sequence control circuit 201 is pre-deposited in the buffer by currently displaying picture with sequential control circuit 201
Face is compared；
2nd, judge in currently displaying picture the whether gray scale in more than 25% region and the special frame of setting gray scale it
Difference is less than 0.5 with the ratio of total gray scale；
3rd, in currently displaying picture the gray scale in more than 25% region with setting special frame gray scale difference with it is total
When the ratio of gray scale is less than 0.5, sequential control circuit 201 sends high level signal to N-type switching transistor 203, and control N-type is opened
Close transistor 203 and be in opening, power supply signal Vcc is input to common electric voltage compensation circuit by N-type switching transistor 203
202, common electric voltage compensation circuit 202 is in running order, and the common electric voltage on public electrode wire is compensated；
Specifically, as shown in figure 3, Vcom1 is the public voltage signal on public electrode wire, Vcom2 is reference voltage,
Public voltage signal Vcomout=Vcom1- (R1/R2) * Δ V during Vcom1 changes deltas V, after compensation.
4th, in currently displaying picture the gray scale in more than 25% region with setting special frame gray scale difference with it is total
When the ratio of gray scale is more than or equal to 0.5, sequential control circuit 201 sends low level signal, control to N-type switching transistor 203
N-type switching transistor processed 203 is closed, and common electric voltage compensation circuit 202 is in halted state, not to public electrode wire
On common electric voltage compensate.
It should be noted that the concrete structure of common electric voltage compensation circuit is not limited to structure as shown in Figure 3, here
Do not limit；Also, the concrete structure class of the concrete structure of common electric voltage compensation circuit and existing common electric voltage compensation circuit
Seemingly, will not be described here.
A kind of compensation method of common electric voltage provided in an embodiment of the present invention and system, in the compensation method, in common electrical
When the difference of common electric voltage and reference voltage on polar curve is more than or equal to the first threshold for setting, by currently displaying picture and setting
Special frame be compared；Similarity degree between currently displaying picture and the special frame of setting meets pre-conditioned
When, the common electric voltage on public electrode wire is compensated；So, the common electric voltage on public electrode wire and reference voltage it
When difference is more than or equal to the first threshold for setting, need the similarity degree between currently displaying picture and the special frame of setting full
The pre-conditioned ability of foot is compensated to the common electric voltage on public electrode wire, otherwise the common electrical on public electrode wire is not pressed into
Row compensation, so, has been reached on the premise of the display quality of liquid crystal display is improved effectively by saving unnecessary compensation
Ground reduces the purpose of the power consumption of liquid crystal display.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (5)
1. a kind of compensation method of common electric voltage, it is characterised in that include：
When the difference of common electric voltage and reference voltage on public electrode wire is more than or equal to the first threshold for setting, currently will show
Show that picture and the special frame of setting are compared；
To the area ratio shared by the similar region of special frame of setting more than or equal to the of setting in currently displaying picture
During two threshold values, the common electric voltage on public electrode wire is compensated；Wherein, the special frame in currently displaying picture with setting
The gray scale in similar region is with the difference of the gray scale of the special frame of setting with the ratio of total gray scale less than the 3rd threshold value for setting.
2. a kind of compensation system of common electric voltage, it is characterised in that include：
Sequential control circuit, for the common electric voltage on public electrode wire and reference voltage difference more than or equal to the of setting
During one threshold value, special frame of the currently displaying picture with setting is compared, and the spy in currently displaying picture with setting
When different area ratio shared by the similar region of picture is more than or equal to the Second Threshold for setting, common electric voltage compensation circuit pair is controlled
Common electric voltage on public electrode wire is compensated；Wherein, region similar to the special frame of setting in currently displaying picture
Gray scale with setting special frame gray scale difference and total gray scale ratio less than setting the 3rd threshold value；
Common electric voltage compensation circuit, for the area shared by similar to the special frame of setting region in currently displaying picture
During than more than or equal to the Second Threshold for setting, receive the control of the sequential control circuit to the common electrical on public electrode wire
Pressure is compensated；Wherein, the gray scale in region similar to the special frame of setting in currently displaying picture and the special picture for setting
The difference of the gray scale in face is less than the 3rd threshold value for setting with the ratio of total gray scale.
3. system as claimed in claim 2, it is characterised in that the Second Threshold is 0.25.
4. system as claimed in claim 2, it is characterised in that the 3rd threshold value is 0.5.
5. the system as described in any one of claim 2-4, it is characterised in that the special frame, including：Green picture,
1dot pictures, 2dot pictures and 1+2dot pictures.
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| CN201510096994.6A CN104658500B (en) | 2015-03-04 | 2015-03-04 | A kind of compensation method of common electric voltage and system |
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| CN201510096994.6A CN104658500B (en) | 2015-03-04 | 2015-03-04 | A kind of compensation method of common electric voltage and system |
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| CN104658500B true CN104658500B (en) | 2017-03-29 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105047117B (en) * | 2015-09-09 | 2017-11-07 | 深圳市华星光电技术有限公司 | The method of adjustable liquid crystal display panel common electric voltage |
| CN105702195B (en) * | 2016-04-28 | 2018-12-07 | 京东方科技集团股份有限公司 | Common electrode voltage compensation circuit, method, display control circuit and display device |
| CN109346022B (en) * | 2018-12-11 | 2022-05-06 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN109377960B (en) * | 2018-12-14 | 2020-07-10 | 深圳市华星光电半导体显示技术有限公司 | Common voltage regulating circuit and common voltage regulating method |
| CN109741715B (en) * | 2019-02-25 | 2020-10-16 | 深圳市华星光电技术有限公司 | Compensation method and compensation device for display panel and storage medium |
| CN111833826B (en) * | 2020-07-23 | 2021-11-23 | 昆山龙腾光电股份有限公司 | Common voltage compensation circuit and display device thereof |
| CN112562607B (en) * | 2020-12-17 | 2022-05-20 | 昆山龙腾光电股份有限公司 | Common voltage compensation circuit for display panel, compensation method and display device |
| CN113112939B (en) * | 2021-04-02 | 2023-10-17 | 深圳市华星光电半导体显示技术有限公司 | Voltage compensation method and device for display device and display device |
| CN117095654B (en) * | 2023-10-12 | 2023-12-29 | 惠科股份有限公司 | Compensation circuit and display device |
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| CN101770758A (en) * | 2008-12-26 | 2010-07-07 | 乐金显示有限公司 | Liquid crystal display and driving method thereof |
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| CN103135270A (en) * | 2011-11-25 | 2013-06-05 | 上海中航光电子有限公司 | Driving method of thin film transistor liquid crystal display |
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| KR100223861B1 (en) * | 1996-12-23 | 1999-10-15 | 구자홍 | Crosstalk compensation device of liquid crystal display element |
| JPH11119743A (en) * | 1997-10-17 | 1999-04-30 | Hoshiden Philips Display Kk | Liquid crystal display device |
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| CN101770758A (en) * | 2008-12-26 | 2010-07-07 | 乐金显示有限公司 | Liquid crystal display and driving method thereof |
| CN103135270A (en) * | 2011-11-25 | 2013-06-05 | 上海中航光电子有限公司 | Driving method of thin film transistor liquid crystal display |
| CN102842280A (en) * | 2012-08-31 | 2012-12-26 | 京东方科技集团股份有限公司 | Public voltage compensation circuit and method, and liquid crystal display device |
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