CN105355185A - Driving circuit of display panel, display device and driving method thereof - Google Patents
Driving circuit of display panel, display device and driving method thereof Download PDFInfo
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- CN105355185A CN105355185A CN201510931188.6A CN201510931188A CN105355185A CN 105355185 A CN105355185 A CN 105355185A CN 201510931188 A CN201510931188 A CN 201510931188A CN 105355185 A CN105355185 A CN 105355185A
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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
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The embodiments of the invention disclose a driving circuit of a display panel, a display device and a driving method thereof. The driving circuit comprises a control chip. The control chip comprises a receiving module used for receiving voltage signals corresponding to panel flicker values; a first analysis module used for adjusting a public voltage according to a fixed voltage difference and determining the range of the public voltage based on the public voltage corresponding to the panel flicker values obtained in the adjusting process; a second analysis module used for adjusting the public voltage in the range according to non-fixed voltage differences and determining a final value of the public voltage based on the public voltage corresponding to the panel flicker values detected in the adjusting process; and a sending module used for respectively providing voltage signals corresponding to a first initial value, the public voltage obtained in the fixed voltage difference adjusting process, the public voltage obtained in the variable voltage difference adjusting process and the final value to the display panel. The driving circuit is capable of efficiently obtaining the optimal public voltage.
Description
Technical field
The application relates to electronic technology field, is specifically related to field of display devices, particularly relates to a kind of driving circuit of display panel, display device and driving method thereof.
Background technology
Due to liquid crystal molecule can occur under long direct drive direct current residual with liquid crystal deterioration etc. problem, therefore available liquid crystal display all uses exchange way to drive usually.When carrying out interchange to display panel and driving, probably because the input signal of positive and negative half cycle is different from the voltage difference between common electric voltage, and cause the problem of film flicker.Therefore, need to regulate the common electric voltage of display panel, to avoid film flicker problem as far as possible.
Prior art when determining the optimum value of common electric voltage, normally with a certain magnitude of voltage for starting point, in the scope being greater than and being less than this magnitude of voltage, get the common electric voltage value of some respectively, and detect the flicker value of its correspondence.Finally by the situation of change of flicker value, determine the optimum value of common electric voltage.Fig. 1 shows in prior art the principle schematic diagram of a kind of scheme determining best common electric voltage.In the coordinate system shown in Fig. 1, transverse axis can represent the value of common electric voltage (VCOM), and the longitudinal axis can represent the flicker value of display panel under corresponding common electric voltage (Flicker).Specifically first can get 0 initial value as common electric voltage, then in the scope being greater than at 0, determine 5 continuous print test points (namely putting 1,2,3,4 and 5), in the scope being less than at 0, determine other 5 continuous print test points (namely putting 1 ', 2 ', 3 ', 4 ' and 5 ') simultaneously, wherein, the voltage difference between any two adjacent test points is identical.Then, comprising the flicker value of all test points of 0 by detecting, determining that namely the minimum test point of flicker value puts 4 '.Then, in the scope being less than a little 4 ', determine 5 continuous print test points (namely putting 5 ', 6 ', 7 ', 8 ' and 9 ') again and detect its flicker value.If the flicker value that the flicker value of point 4 ' is less than a little 5 ', 6 ', 7 ', 8 ' and 9 ', then the magnitude of voltage putting 4 ' correspondence can be defined as best common electric voltage.
But; said method needs the span assessing best common electric voltage in advance usually, and in order to ensure best common electric voltage in this span, it is larger that this scope can be got usually; therefore can increase the sweep time of common electric voltage, reduce the determination efficiency of best common electric voltage.
Summary of the invention
In view of above-mentioned defect of the prior art or deficiency, expect to provide a kind of common electric voltage determination scheme efficiently.In order to realize above-mentioned one or more object, the embodiment of the present application provides a kind of driving circuit of display panel, display device and driving method thereof.
First aspect, the embodiment of the present application provides a kind of driving circuit of display panel, this driving circuit comprises control chip, described control chip comprises that the first initial value of the common electric voltage be preset in control chip, fixed voltage are poor, voltage regulation coefficient and voltage threshold, and receiver module, the first analysis module, the second analysis module and sending module, wherein
Described receiver module is for voltage signal corresponding to the panel flash value of the described display panel receiving photoelectric sensor and detect;
Described first analysis module, for with described first initial value for starting point, according to the described common electric voltage of described fixed voltage difference adjustment, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in described fixed voltage difference adjustment process, determine the span of described common electric voltage;
Described second analysis module, for the poor and described voltage regulation coefficient determination on-fixed voltage difference according to described fixed voltage, and described common electric voltage is adjusted according to described on-fixed voltage difference in described span, and based on the common electric voltage corresponding to the described panel flash value meeting the second predetermined condition got in described on-fixed voltage difference adjustment process, determine the end value of described common electric voltage;
Described sending module, for respectively the voltage signal corresponding to described first initial value, the common electric voltage obtained in described fixed voltage difference adjustment process and the common electric voltage that obtains in described variable voltage difference adjustment process being supplied to described display panel, show under corresponding common electric voltage to drive described display panel.
Second aspect, the embodiment of the present application provides a kind of display device, and this display device comprises the driving circuit of the display panel that display panel and above-mentioned first aspect provide.
The third aspect, the embodiment of the present application provides a kind of driving method of display device, and this display device comprises the driving circuit of the display panel that display panel and above-mentioned first aspect provide, and described driving circuit comprises control chip, and the method comprises:
Obtain that the first initial value, the fixed voltage that are preset in common electric voltage in described control chip are poor, voltage regulation coefficient and voltage threshold;
With described first initial value for starting point, according to the described common electric voltage of described fixed voltage difference adjustment, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in described fixed voltage difference adjustment process, determine the span of described common electric voltage;
According to described fixed voltage difference and described voltage regulation coefficient determination on-fixed voltage difference, and described common electric voltage is adjusted according to described on-fixed voltage difference in described span, and based on the common electric voltage corresponding to the described panel flash value meeting the second predetermined condition got in described on-fixed voltage difference adjustment process, determine the end value of described common electric voltage.
The driving circuit of the display panel that the embodiment of the present application provides, display device and driving method thereof, first Voltage Cortrol can be carried out by larger fixed voltage difference, determine the roughly span of common electric voltage fast, then within the scope of this, make voltage scanning interval can Fast Convergent by each on-fixed voltage difference that reduces, thus improve the determination efficiency of common electric voltage optimum value.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, the other features, objects and advantages of the application will become more obvious:
Fig. 1 is the principle schematic diagram of a kind of scheme determining best common electric voltage in prior art;
Fig. 2 is the structural representation of an embodiment of the driving circuit of the application's display panel;
Fig. 3 is the structural representation of an embodiment of the first analysis module in the application's driving circuit;
Fig. 4 is the principle schematic diagram of an embodiment of the application first analysis module determination common electric voltage span;
Fig. 5 is the structural representation of an embodiment of the second analysis module in the application's driving circuit;
Fig. 6 is the principle schematic diagram of an embodiment of the end value of the application second analysis module determination common electric voltage;
Fig. 7 is the process flow diagram of an embodiment of the driving method of the application's display device.
Embodiment
Below in conjunction with drawings and Examples, the application is described in further detail.Be understandable that, specific embodiment described herein is only for explaining related invention, but not the restriction to this invention.It also should be noted that, for convenience of description, in accompanying drawing, illustrate only the part relevant to Invention.
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.
Please refer to Fig. 2, it illustrates the structural representation of an embodiment of the driving circuit of the application's display panel.
As shown in Figure 2, the driving circuit of the present embodiment comprises: control chip 20.In the storage space of this control chip 20, the first initial value, the fixed voltage that can also be previously stored with common electric voltage are poor, the parameter such as voltage regulation coefficient and voltage threshold.Wherein, common electric voltage can be supplied to display panel by driving circuit, shows to drive display panel.Alternatively, the driving circuit in the present embodiment can only for being display panel adjustment common electric voltage.And the display that display panel is required when showing, can be provided by other circuit except driving circuit.
May further include receiver module 21, first analysis module 22, second analysis module 23 and sending module 24 in control chip 20, and can data transmission be carried out between modules.Meanwhile, the modules in control chip 20, can also obtain the one or more parameters prestored in above-mentioned storage space.
In the present embodiment, receiver module 21 may be used for receiving voltage signal corresponding to the panel flash value of display panel that photoelectric sensor detects.The optical signalling of the display panel detected can be converted to electric signal by outside photoelectric sensor (such as nitometer), and by the calculating to electric signal, obtains the panel flash value of display panel under a certain common electric voltage.This panel flash value, after obtaining panel flash value, can also be transferred to control chip 20 in the mode of voltage signal by photoelectric sensor.Receiver module 21 in control chip 20 just can receive the voltage signal corresponding with panel flash value from photoelectric sensor termination.
It should be noted that, the various methods above by photoelectric sensor detection panel flicker value are known technologies of extensively investigation and application at present, do not repeat them here.
In some optional implementations of the present embodiment, above-mentioned panel flash value can be the flicker value of display panel when showing predetermined GTG.Wherein, the concrete value of predetermined GTG can set according to actual needs.Such as, for the display panel that can show 256 grades of GTGs, above-mentioned panel flash value can for flicker value during its display the 128th grade of GTG.
In some optional implementations of the present embodiment, above-mentioned driving circuit is also for providing display for display panel.Driving circuit in the present embodiment, can also further for it provides display except for except display panel adjustment common electric voltage, such as, and the voltage signal corresponding with the GTG that will show.Like this, the Presentation Function of display panel just can be realized completely by means of only the driving circuit in the present embodiment.
In the present embodiment, first analysis module 22 may be used for the first initial value for starting point, according to fixed voltage difference adjustment common electric voltage, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in fixed voltage difference adjustment process, determine the span of common electric voltage.Particularly, the first analysis module 22 first can obtain the first initial value of the common electric voltage prestored in the storage space of control chip 20 and fixed voltage poor.Then, can on the first initial value successively superposition or reduce fixed voltage poor.Often superposition or a minimizing fixed voltage difference, be just equivalent to adjustment common electric voltage having been carried out to a fixed step size.
In the process according to fixed voltage difference adjustment common electric voltage, often adjust once, the voltage signal that the panel flash value that above-mentioned receiver module 21 just can receive under current common electric voltage from photoelectric detector termination is corresponding, and give the first analysis module 22 by this Signal transmissions.Like this, in the process that common electric voltage adjusts according to fixed step size, the first analysis module 22 can get the corresponding relation curve between common electric voltage and panel flash value.When panel flicker value meets the first predetermined condition, according to the common electric voltage of its correspondence, the roughly span of common electric voltage can be determined.Wherein, the specific rules of the first predetermined condition can set according to actual needs.Such as, if there is flex point in the change curve of panel flash value, then can using the central point of the common electric voltage value corresponding to this flex point as above-mentioned span.
In the present embodiment, second analysis module 23 may be used for according to fixed voltage difference and voltage regulation coefficient determination on-fixed voltage difference, and according to on-fixed voltage difference adjustment common electric voltage in the span that the first analysis module 22 is determined, and based on the common electric voltage corresponding to the described panel flash value meeting the second predetermined condition got in on-fixed voltage difference adjustment process, determine the end value of common electric voltage.Particularly, first the second analysis module 23 can obtain the fixed voltage difference and voltage regulation coefficient that prestore in the storage space of control chip 20.Then, the Changing Pattern of on-fixed voltage difference first can be determined according to these two parameters.Then, can according to on-fixed voltage difference adjustment common electric voltage, namely on common electric voltage, each voltage difference increased or reduce is different, is equivalent to carry out the adjustment of variable step size to common electric voltage.Alternatively, on-fixed voltage difference can pass through voltage regulation coefficient, progressively regulates obtain fixed voltage difference.
In the process according to on-fixed voltage difference adjustment common electric voltage, often adjust once, the voltage signal that the panel flash value that above-mentioned receiver module 21 can receive under current common electric voltage from photoelectric detector termination is corresponding, and give the second analysis module 23 by this Signal transmissions.Like this, in the process that common electric voltage adjusts according to variable step size, the second analysis module 23 can get the corresponding relation curve between common electric voltage and panel flash value.When panel flicker value meets the second predetermined condition, according to the common electric voltage of its correspondence, the end value of common electric voltage can be determined, namely best common electric voltage.Wherein, the specific rules of the second predetermined condition can set according to actual needs.Such as, can using the end value of the common electric voltage value corresponding to the minimum value of panel flash value as common electric voltage.
In the present embodiment, sending module 24, for respectively the first initial value, voltage signal corresponding to the fixed voltage difference common electric voltage that obtains of adjustment process and the common electric voltage that obtains in variable voltage difference adjustment process being supplied to display panel, show under corresponding common electric voltage to drive display panel.Particularly, sending module 24 can obtain the first initial value of the common electric voltage prestored in the storage space of control chip 20, also can obtain the common electric voltage obtained in fixed voltage difference adjustment process from the first analysis module 22, the common electric voltage obtained in variable voltage difference adjustment process can also be obtained from the second analysis module 23.Further, sending module 24 can further by the common electric voltage that gets by the form of voltage signal, send to display panel, display panel can be shown under different common electric voltages.Like this, when display panel shows, above-mentioned photoelectric sensor just may be used for the panel flash value of detection display panel under different common voltage.
The driving circuit of the display panel that the embodiment of the present application provides, first Voltage Cortrol can be carried out by larger fixed voltage difference, determine the roughly span of common electric voltage fast, then within the scope of this, make voltage scanning interval can Fast Convergent by each on-fixed voltage difference that reduces, thus improve the determination efficiency of common electric voltage optimum value.
With further reference to Fig. 3, it illustrates the structural representation of an embodiment of the first analysis module in the application's driving circuit.
As shown in Figure 3, the first analysis module 22 can comprise: voltage-adjusting unit 221, acquiring unit 222, judging unit 223, determining unit 224 and feedback unit 225.
First analysis module 22 can be further used for the first initial value based on common electric voltage, and driving voltage adjustment unit 221, acquiring unit 222, judging unit 223, determining unit 224 and feedback unit 225 perform following determining step.
In the present embodiment, voltage-adjusting unit 221 may be used for being added respectively by the first initial value and deducting fixed voltage difference, obtains the first magnitude of voltage and the second magnitude of voltage.Voltage signal corresponding to first initial value, the first magnitude of voltage and the second magnitude of voltage can be sent to display panel by above-mentioned sending module 24, and display panel can be shown under above-mentioned common electric voltage.Meanwhile, photoelectric sensor can detect the panel flash value of display panel under the first initial value, the first magnitude of voltage and the second magnitude of voltage.
Like this, acquiring unit 222 may be used for obtaining end from photoelectric sensor and obtains the panel flash value of display panel under the first initial value, the first magnitude of voltage and the second magnitude of voltage, obtains the first initial scintillation value, the first flicker value and the second flicker value.Judging unit 223 may be used for the first initial scintillation value of being obtained by acquiring unit 222 and compares, to judge whether the first initial scintillation value is less than the first flicker value and the second flicker value simultaneously with the first flicker value of its acquisition and the second flicker value respectively.
In the present embodiment, if determining unit 224 may be used for judging unit 223 judge that the first initial scintillation value is less than the first flicker value and the second flicker value simultaneously, then using the ultimate value of the common electric voltage corresponding to the first flicker value and the second flicker value as span.Particularly, because the first initial value is between the first magnitude of voltage and the second magnitude of voltage, when the first initial scintillation value is less than the first flicker value and the second flicker value simultaneously, illustrate that the curve that panel flash value changes with common electric voltage probably occurs flex point between the first magnitude of voltage and the second magnitude of voltage.That is, the common electric voltage corresponding to the minimum value of panel flash value, probably between the common electric voltage corresponding to the first flicker value and the second flicker value.Therefore, can using the ultimate value of the common electric voltage corresponding to the first flicker value and the second flicker value as span.Specifically can using the first magnitude of voltage and and the second magnitude of voltage in less that minimum value as span, and using that larger maximal value as span.The span determined can also be sent to the second analysis module 23 by determining unit 224.
Feedback unit 225, if judge that the first initial scintillation value is more than or equal to the first flicker value or the second flicker value for judging unit 223, then using the common electric voltage corresponding to the minimum value in the first initial scintillation value, the first flicker value and the second flicker value as the first initial value, and feed back to above-mentioned voltage-adjusting unit 221 again to perform above-mentioned determining step.Particularly, because the first initial value is between the first magnitude of voltage and the second magnitude of voltage, when the first initial scintillation value is more than or equal to the first flicker value or the second flicker value, illustrate that the curve that panel flash value changes with common electric voltage does not exist flex point between the first magnitude of voltage and the second magnitude of voltage.That is, the common electric voltage corresponding to the minimum value of panel flash value, is probably positioned at outside the first flicker value and the common electric voltage corresponding to the second flicker value.Therefore, can using the common electric voltage corresponding to the minimum value in the first initial scintillation value, the first flicker value and the second flicker value again as the first initial value, and feed back to above-mentioned voltage-adjusting unit 221, to make voltage-adjusting unit 221, acquiring unit 222, judging unit 223, determining unit 224 and feedback unit 225 can again perform above-mentioned determining step, until determine the span of common electric voltage.
For the ease of understanding, further combined with Fig. 4, the scheme of the span of the present embodiment determination common electric voltage is specifically described.Fig. 4 shows the principle schematic diagram of an embodiment of the application first analysis module determination common electric voltage span.In the coordinate system shown in Fig. 4, transverse axis can represent the value of common electric voltage (VCOM), and the longitudinal axis can represent the flicker value of display panel under corresponding common electric voltage (Flicker).As shown in Figure 4, can first the first initial value and initial VCOM be added respectively and deduct fixed voltage difference, obtain the first magnitude of voltage VCOM1 and the second magnitude of voltage VCOM2.Now, the panel flash value of display panel under VCOM1, initial VCOM and VCOM2 increases progressively successively, does not meet the condition determining common electric voltage span.Therefore, using VCOM1 minimum for panel flash value as the first initial value, and can continue VCOM1 is added respectively and deducts fixed voltage difference, obtain VCOM3 and initial VCOM.Now, the panel flash value of display panel under initial VCOM, VCOM1 and VCOM3 is successively decreased successively, does not still meet the condition determining common electric voltage span.Therefore, need using VCOM3 minimum for panel flash value as the first initial value, and continue VCOM3 is added respectively and deducts fixed voltage difference, obtain VCOM4 and VCOM1.This time, the panel flash value of display panel under initial VCOM3 is less than the panel flash value under VCOM1 and VCOM4 simultaneously, therefore can determine that common electric voltage span is between VCOM1 and VCOM4.
With further reference to Fig. 5, it illustrates the structural representation of an embodiment of the second analysis module in the application's driving circuit.
As shown in Figure 5, the second analysis module 23 can comprise: initial value determining unit 231, voltage difference determining unit 232, voltage-adjusting unit 233, acquiring unit 234, judging unit 235, determining unit 236 and feedback unit 237.
In the present embodiment, the mid point that initial value determining unit 231 may be used for the span determined by the first analysis module 22 is defined as the second initial value of common electric voltage.Voltage difference determining unit 232 may be used for the concrete value determining variable voltage difference.Particularly, voltage difference determining unit 232 can obtain from the storage space of control chip 20 the fixed voltage difference and voltage regulation coefficient that prestore, then fixed voltage difference is multiplied with voltage regulation coefficient, just can obtain initial voltage difference, i.e. the initial value of on-fixed voltage difference.Wherein, voltage regulation coefficient is greater than 0 and is less than 1.Like this, the on-fixed voltage difference obtained can be less than fixed voltage difference, thus can realize the fine tuning to common electric voltage in span.
In the present embodiment, second analysis module 23 can be further used for the second initial value based on above-mentioned common electric voltage, and driving voltage adjustment unit 233, acquiring unit 234, judging unit 235, determining unit 236 and feedback unit 237 perform following end value determining step.
Particularly, voltage-adjusting unit 233 may be used for the second initial value to add and deduct the initial voltage difference that voltage difference determining unit 232 is determined respectively, obtains third voltage value and the 4th magnitude of voltage.Voltage signal corresponding to second initial value, third voltage value and the 4th magnitude of voltage can be sent to display panel by above-mentioned sending module 24, and display panel can be shown under above-mentioned common electric voltage.Meanwhile, photoelectric sensor can detect the panel flash value of display panel under the second initial value, third voltage value and the 4th magnitude of voltage.
Like this, acquiring unit 234 may be used for obtaining end from photoelectric sensor and obtains the panel flash value of display panel under the second initial value, third voltage value and the 4th magnitude of voltage, obtains the second initial scintillation value, the 3rd flicker value and the 4th flicker value.
First judging unit 235 can obtain from the storage space of control chip 20 voltage threshold prestored, and obtains initial voltage difference from initial value determining unit 231.Then initial voltage difference and voltage threshold are compared, to judge whether initial voltage difference is less than or equal to voltage threshold.
Due to on-fixed voltage extent, represent the Adjustment precision to common electric voltage.When on-fixed voltage difference reduces gradually, the common electric voltage accuracy determined also can improve gradually.In actual adjustment process, owing to there is no need the precision infinitely improving common electric voltage.Therefore by being pre-stored in the voltage threshold in control chip 20, the minimum value of on-fixed voltage difference can be determined, namely controlling the final precision of common electric voltage.
In the present embodiment, determining unit 236 may be used for when judging unit 235 judges that initial voltage difference is less than or equal to voltage threshold, the common electric voltage according to the adjustment of on-fixed voltage difference is described, has reached its setting accuracy.The common electric voltage corresponding to minimum value in the second initial scintillation value that therefore can directly acquiring unit 234 be obtained, the 3rd flicker value and the 4th flicker value as the end value of common electric voltage, i.e. best common electric voltage.
Feedback unit 237, for when judging unit 235 judges that initial voltage difference is greater than voltage threshold, illustrates that the common electric voltage adjusted according to on-fixed voltage difference does not also arrive its setting accuracy.Therefore need to reduce on-fixed voltage difference further, again common electric voltage is adjusted.Particularly, common electric voltage that can be corresponding using the minimum value in the second initial scintillation value, the 3rd flicker value and the 4th flicker value is as the second initial value, and using the product of initial voltage difference and voltage regulation coefficient as initial voltage difference, then voltage-adjusting unit 233 is fed back to, above-mentioned end value determining step again can be performed, until initial voltage difference is less than or equal to voltage threshold to make voltage-adjusting unit 233, acquiring unit 234, judging unit 235, determining unit 236 and feedback unit 237.
In some optional implementations of the present embodiment, above-mentioned voltage regulation coefficient can be more than or equal to 0.5.When voltage regulation coefficient equals 0.5, variable voltage difference can be reduced half at every turn, namely sweep span be reduced 1/2.Therefore, speed of convergence is very fast, can improve the efficiency determining best common electric voltage further.
For the ease of understanding, further combined with Fig. 6, the scheme of the end value of the present embodiment determination common electric voltage is specifically described.Fig. 6 shows the principle schematic diagram of an embodiment of the end value of the application second analysis module determination common electric voltage.In the coordinate system shown in Fig. 6, transverse axis can represent the value of common electric voltage (VCOM), and the longitudinal axis can represent the flicker value of display panel under corresponding common electric voltage (Flicker).As shown in Figure 6, the span of the common electric voltage before determined is between minimum M in and maximal value Max, and first the mid point of span and initial VCOM can be defined as the second initial value by the second analysis module.Then fixed voltage difference Δ V is multiplied by voltage regulation coefficient 0.5, obtains initial voltage difference Δ V/2.Then, respectively initial VCOM is added and deduct initial voltage difference Δ V/2, obtain two magnitude of voltage VCOM1 and VCOM2.If the voltage threshold prestored is Δ V/4, then can judge that current initial voltage difference Δ V/2 is greater than voltage threshold Δ V/4.Therefore, using VCOM2 minimum for panel flash value as the second initial value, and current initial voltage difference Δ V/2 can be multiplied by voltage regulation coefficient 0.5, obtain new initial voltage difference Δ V/4.Then, VCOM2 can be added respectively and deduct new initial voltage difference Δ V/4, obtain VCOM3 and VCOM4.This time, can judge that current initial voltage difference Δ V/4 equals voltage threshold.Therefore can VCOM3 that directly panel flash value is minimum in VCOM2, VCOM3 and VCOM4 as the end value of common electric voltage, i.e. best common electric voltage.
In the embodiment shown in fig. 6, owing to always carrying out in turn in the both sides of best common electric voltage the scanning of common electric voltage, therefore the value of common electric voltage in prior art (such as shown in Fig. 1) can be avoided always to scan opposite side by the side of best common electric voltage, and in liquid crystal capacitance, easily produce the problem of electrostatic residual (bias voltage), make the common electric voltage value finally determined more accurate.
Based on the driving circuit of the above-mentioned display panel provided, present invention also provides a kind of display device.In the present embodiment, display device can comprise the driving circuit of display panel and the display panel described in above-mentioned any embodiment.
With further reference to Fig. 7, it illustrates the process flow diagram of an embodiment of the driving method of the application's display device.This driving method can be applied to comprise driving circuit described in above-mentioned any embodiment display device on.Wherein, driving circuit comprises control chip, and in control chip, prestore that the first initial value of common electric voltage, fixed voltage are poor, voltage regulation coefficient and voltage threshold.
Driving method in the present embodiment specifically can comprise:
First, in step 701, obtain that the first initial value, the fixed voltage that are preset in common electric voltage in control chip are poor, voltage regulation coefficient and voltage threshold.
Secondly, in a step 702, with the first initial value for starting point, according to fixed voltage difference adjustment common electric voltage, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in fixed voltage difference adjustment process, determine the span of common electric voltage.
Finally, in step 703, according to fixed voltage difference and voltage regulation coefficient determination on-fixed voltage difference, and according to on-fixed voltage difference adjustment common electric voltage in span, and based on the common electric voltage corresponding to the panel flash value meeting the second predetermined condition got in on-fixed voltage difference adjustment process, determine the end value of common electric voltage.
In some optional implementations of the present embodiment, with the first initial value for starting point, according to fixed voltage difference adjustment common electric voltage, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in fixed voltage difference adjustment process, determine that the span of common electric voltage comprises:
Based on the first initial value, perform following determining step:
Add the first initial value respectively and deduct the magnitude of voltage that fixed voltage difference is corresponding, obtain the first magnitude of voltage and the second magnitude of voltage;
Obtain the panel flash value of display panel under described first initial value, the first magnitude of voltage and the second magnitude of voltage, obtain the first initial scintillation value, the first flicker value and the second flicker value;
Judge whether the first initial scintillation value is less than the first flicker value and described second flicker value simultaneously;
If so, then using the ultimate value of the common electric voltage corresponding to the first flicker value and the second flicker value as span;
Otherwise, using the common electric voltage corresponding to the minimum value in the first initial scintillation value, the first flicker value and the second flicker value as the first initial value, again perform above-mentioned determining step.
In some optional implementations of the present embodiment, according to fixed voltage difference and default voltage regulation coefficient determination on-fixed voltage difference, and according to on-fixed voltage difference adjustment common electric voltage in span, and based on the common electric voltage corresponding to the panel flash value meeting the second predetermined condition detected in on-fixed voltage difference adjustment process, determine that the end value of common electric voltage comprises:
The mid point of span is defined as the second initial value of common electric voltage;
Fixed voltage difference is multiplied by voltage regulation coefficient, obtains initial voltage difference, wherein, voltage regulation coefficient is greater than 0 and is less than 1;
Based on the second initial value, perform following end value determining step:
Second initial value added respectively and deducts initial voltage difference, obtaining third voltage value and the 4th magnitude of voltage;
Obtain the panel flash value of display panel under the second initial value, third voltage value and the 4th magnitude of voltage, obtain the second initial scintillation value, the 3rd flicker value and the 4th flicker value;
Judge whether initial voltage difference is less than or equal to voltage threshold;
If so, then using the common electric voltage corresponding to the minimum value in the second initial scintillation value, the 3rd flicker value and the 4th flicker value as end value;
Otherwise using common electric voltage corresponding for minimum value as the second initial value, the product of initial voltage difference and voltage regulation coefficient, as initial voltage difference, performs above-mentioned end value determining step again.
In some optional implementations of the present embodiment, voltage regulation coefficient is more than or equal to 0.5.
In some optional implementations of the present embodiment, panel flash value is the flicker value of display panel when showing predetermined GTG.
In some optional implementations of the present embodiment, panel flash value is detected by photoelectric sensor and obtains.
In some optional implementations of the present embodiment, driving method also comprises: for display panel provides display.
The driving method of the display device that the present embodiment provides, Voltage Cortrol can be carried out by larger fixed voltage difference, determine the roughly span of common electric voltage fast, then within the scope of this, make voltage scanning interval can Fast Convergent by each on-fixed voltage difference that reduces, thus improve the determination efficiency of common electric voltage optimum value.
More than describe and be only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art are to be understood that, invention scope involved in the application, be not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should be encompassed in when not departing from described inventive concept, other technical scheme of being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme formed.
Claims (14)
1. the driving circuit of a display panel, it is characterized in that, comprise control chip, described control chip comprises that the first initial value of the common electric voltage be preset in control chip, fixed voltage are poor, voltage regulation coefficient and voltage threshold, and receiver module, the first analysis module, the second analysis module and sending module, wherein
Described receiver module is for voltage signal corresponding to the panel flash value of the described display panel receiving photoelectric sensor and detect;
Described first analysis module, for with described first initial value for starting point, according to the described common electric voltage of described fixed voltage difference adjustment, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in described fixed voltage difference adjustment process, determine the span of described common electric voltage;
Described second analysis module, for the poor and described voltage regulation coefficient determination on-fixed voltage difference according to described fixed voltage, and described common electric voltage is adjusted according to described on-fixed voltage difference in described span, and based on the common electric voltage corresponding to the described panel flash value meeting the second predetermined condition got in described on-fixed voltage difference adjustment process, determine the end value of described common electric voltage;
Described sending module, for respectively the voltage signal corresponding to described first initial value, the common electric voltage obtained in described fixed voltage difference adjustment process and the common electric voltage that obtains in described variable voltage difference adjustment process being supplied to described display panel, show under corresponding common electric voltage to drive described display panel.
2. driving circuit according to claim 1, is characterized in that, described first analysis module comprises: voltage-adjusting unit, acquiring unit, judging unit, determining unit and feedback unit;
Described first analysis module is further used for, based on described first initial value, driving and performing following determining step with lower unit:
Described voltage-adjusting unit, for be added respectively by described first initial value and to deduct described fixed voltage poor, obtains the first magnitude of voltage and the second magnitude of voltage;
Described acquiring unit, for obtaining the panel flash value of described display panel under described first initial value, described first magnitude of voltage and described second magnitude of voltage, obtains the first initial scintillation value, the first flicker value and the second flicker value;
Described judging unit, for judging whether described first initial scintillation value is less than described first flicker value and described second flicker value simultaneously;
Described determining unit, if be less than described first flicker value and described second flicker value for described first initial scintillation value simultaneously, then using the ultimate value of the common electric voltage corresponding to described first flicker value and described second flicker value as described span, and send to described second analysis module;
Described feedback unit, if be more than or equal to described first flicker value or described second flicker value for described first initial scintillation value, then using the common electric voltage corresponding to the minimum value in described first initial scintillation value, the first flicker value and the second flicker value as the first initial value, and feed back to described voltage-adjusting unit again to perform described determining step.
3. driving circuit according to claim 1, is characterized in that, described second analysis module comprises: initial value determining unit, voltage difference determining unit, voltage-adjusting unit, acquiring unit, judging unit, determining unit and feedback unit;
Described initial value determining unit, for being defined as the second initial value of described common electric voltage by the mid point of described span;
Described voltage difference determining unit, for described fixed voltage difference is multiplied by described voltage regulation coefficient, obtains initial voltage difference, and wherein, described voltage regulation coefficient is greater than 0 and is less than 1;
Described second analysis module is further used for, based on described second initial value, driving and performing following end value determining step with lower unit:
Described voltage-adjusting unit, for being added respectively by described second initial value and deducting described initial voltage difference, obtains third voltage value and the 4th magnitude of voltage;
Described acquiring unit, for obtaining the panel flash value of described display panel under described second initial value, described third voltage value and described 4th magnitude of voltage, obtains the second initial scintillation value, the 3rd flicker value and the 4th flicker value;
Described judging unit, for judging whether described initial voltage difference is less than or equal to described voltage threshold;
Described determining unit, if be less than or equal to described voltage threshold for described initial voltage difference, then using the common electric voltage corresponding to the minimum value in described second initial scintillation value, the 3rd flicker value and the 4th flicker value as described end value;
Described feedback unit, if be greater than described voltage threshold for described initial voltage difference, then using common electric voltage corresponding for described minimum value as the second initial value, using the product of described initial voltage difference and described voltage regulation coefficient as initial voltage difference, and feed back to described voltage-adjusting unit again to perform described end value determining step.
4. driving circuit according to claim 3, is characterized in that, described voltage regulation coefficient is more than or equal to 0.5.
5. the driving circuit according to any one of Claims 1-4, is characterized in that, described panel flash value is the flicker value of described display panel when showing predetermined GTG.
6. driving circuit according to claim 5, is characterized in that, described driving circuit is also for providing display for described display panel.
7. a display device, is characterized in that, comprises the driving circuit of display panel and the display panel according to any one of claim 1 to 6.
8. a driving method for display device, is characterized in that, described display device comprises the driving circuit of display panel and the display panel according to any one of claim 1 to 6, and described driving circuit comprises control chip;
Described method comprises:
Obtain that the first initial value, the fixed voltage that are preset in common electric voltage in described control chip are poor, voltage regulation coefficient and voltage threshold;
With described first initial value for starting point, according to the described common electric voltage of described fixed voltage difference adjustment, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in described fixed voltage difference adjustment process, determine the span of described common electric voltage;
According to described fixed voltage difference and described voltage regulation coefficient determination on-fixed voltage difference, and described common electric voltage is adjusted according to described on-fixed voltage difference in described span, and based on the common electric voltage corresponding to the described panel flash value meeting the second predetermined condition got in described on-fixed voltage difference adjustment process, determine the end value of described common electric voltage.
9. driving method according to claim 8, it is characterized in that, described with described first initial value for starting point, according to the described common electric voltage of described fixed voltage difference adjustment, and based on the common electric voltage corresponding to the panel flash value meeting the first predetermined condition got in described fixed voltage difference adjustment process, determine that the span of described common electric voltage comprises:
Based on described first initial value, perform following determining step:
Described first initial value is added and deducts the magnitude of voltage that described fixed voltage difference is corresponding respectively, obtain the first magnitude of voltage and the second magnitude of voltage;
Obtain the panel flash value of described display panel under described first initial value, described first magnitude of voltage and described second magnitude of voltage, obtain the first initial scintillation value, the first flicker value and the second flicker value;
Judge whether described first initial scintillation value is less than described first flicker value and described second flicker value simultaneously;
If so, then using the ultimate value of the common electric voltage corresponding to described first flicker value and described second flicker value as described span;
Otherwise, using the common electric voltage corresponding to the minimum value in described first initial scintillation value, the first flicker value and the second flicker value as the first initial value, again perform described determining step.
10. driving method according to claim 8, it is characterized in that, described according to described fixed voltage difference and default voltage regulation coefficient determination on-fixed voltage difference, and described common electric voltage is adjusted according to described on-fixed voltage difference in described span, and based on the common electric voltage corresponding to the panel flash value meeting the second predetermined condition detected in described on-fixed voltage difference adjustment process, determine that the end value of described common electric voltage comprises:
The mid point of described span is defined as the second initial value of described common electric voltage;
Described fixed voltage difference is multiplied by described voltage regulation coefficient, obtains initial voltage difference, wherein, described voltage regulation coefficient is greater than 0 and is less than 1;
Based on described second initial value, perform following end value determining step:
Described second initial value added respectively and deducts described initial voltage difference, obtaining third voltage value and the 4th magnitude of voltage;
Obtain the panel flash value of described display panel under described second initial value, described third voltage value and described 4th magnitude of voltage, obtain the second initial scintillation value, the 3rd flicker value and the 4th flicker value;
Judge whether described initial voltage difference is less than or equal to described voltage threshold;
If so, then using the common electric voltage corresponding to the minimum value in described second initial scintillation value, the 3rd flicker value and the 4th flicker value as described end value;
Otherwise using common electric voltage corresponding for described minimum value as the second initial value, the product of described initial voltage difference and described voltage regulation coefficient, as initial voltage difference, performs described end value determining step again.
11. driving methods according to claim 10, is characterized in that, described voltage regulation coefficient is more than or equal to 0.5.
Driving method described in 12. any one of according to Claim 8 to 11, is characterized in that, described panel flash value is the flicker value of described display panel when showing predetermined GTG.
13. driving methods according to claim 12, is characterized in that, described panel flash value is detected by photoelectric sensor and obtains.
Driving method described in 14. any one of according to Claim 8 to 11, is characterized in that, also comprise:
For described display panel provides display.
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|---|---|---|---|---|
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1361475A1 (en) * | 2001-02-05 | 2003-11-12 | International Business Machines Corporation | Liquid crystal display device |
| CN202502718U (en) * | 2012-02-23 | 2012-10-24 | 青岛海信电器股份有限公司 | Automatic VCOM voltage adjusting system of liquid crystal module group products |
| CN104217687A (en) * | 2013-05-30 | 2014-12-17 | 北京京东方光电科技有限公司 | Method and device for automatically correcting flickering of liquid crystal display |
| CN104347048A (en) * | 2014-11-21 | 2015-02-11 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and gray scale voltage compensating method thereof |
| CN105047117A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | Method for adjusting common voltage of liquid crystal display panel |
-
2015
- 2015-12-14 CN CN201510931188.6A patent/CN105355185B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1361475A1 (en) * | 2001-02-05 | 2003-11-12 | International Business Machines Corporation | Liquid crystal display device |
| CN202502718U (en) * | 2012-02-23 | 2012-10-24 | 青岛海信电器股份有限公司 | Automatic VCOM voltage adjusting system of liquid crystal module group products |
| CN104217687A (en) * | 2013-05-30 | 2014-12-17 | 北京京东方光电科技有限公司 | Method and device for automatically correcting flickering of liquid crystal display |
| CN104347048A (en) * | 2014-11-21 | 2015-02-11 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and gray scale voltage compensating method thereof |
| CN105047117A (en) * | 2015-09-09 | 2015-11-11 | 深圳市华星光电技术有限公司 | Method for adjusting common voltage of liquid crystal display panel |
Cited By (24)
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|---|---|---|---|---|
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