CN108806631A - A kind of drive control method, apparatus and LCD TV - Google Patents
A kind of drive control method, apparatus and LCD TV Download PDFInfo
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- CN108806631A CN108806631A CN201810737284.0A CN201810737284A CN108806631A CN 108806631 A CN108806631 A CN 108806631A CN 201810737284 A CN201810737284 A CN 201810737284A CN 108806631 A CN108806631 A CN 108806631A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010409 thin film Substances 0.000 claims abstract description 64
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 60
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 239000010408 film Substances 0.000 claims description 9
- 230000008054 signal transmission Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 claims description 2
- 235000008434 ginseng Nutrition 0.000 claims description 2
- 238000001228 spectrum Methods 0.000 description 14
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- 230000000694 effects Effects 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007323 disproportionation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
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- 210000004899 c-terminal region Anatomy 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
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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
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
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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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Abstract
The present invention relates to field of liquid crystal display, and in particular to a kind of drive control method, apparatus and LCD TV, including：The grid signal exported by grid drive chip is obtained, controlling the thin film transistor (TFT) by the grid signal opens；The data-signal exported by data driving chip is obtained, and the data-signal is transmitted to the liquid crystal capacitance by the thin film transistor (TFT) having turned on and is charged；With the charging of the liquid crystal capacitance, the LCD TV is driven to show image；Whether the brightness of detection displayed image reaches the brightness of the data-signal instruction；If it is not, then adjusting the parameter of the grid drive chip so that the grid drive chip widens the effective width of the grid signal according to the parameter of adjustment.Grid signal is adjusted by actual displayed brightness, keeps LCD TV image display brightness uniform, the display image quality of LCD TV is optimized on the basis of not increasing other costs.
Description
Technical field
This disclosure relates to field of liquid crystal display, more particularly to a kind of drive control method, apparatus and LCD TV.
Background technology
Currently, the drive control scheme of liquid crystal display is：The n exported by the level switch module in grid drive chip
Road clock signal (i.e. grid signal) HC1-n, as shown in Figure 1, working as HCmWhen (1≤m≤n) is high level, the HCmSignal corresponds to row
Thin film transistor (TFT) (TFT) open, from data driving chip export data-signal to liquid crystal capacitance charge, work as HCmFor low electricity
When flat, the liquid crystal molecule in liquid crystal capacitance is turned to special angle according to the voltage status between liquid crystal capacitance and maintains the shape
State is until charge next time.
LCD TV circuit structure is as shown in Figure 2.The grid signal of grid drive chip output passes through controlling grid scan line
(G1, G2, G3 ...) is input to the grid of thin film transistor (TFT) (TFT), and the data-signal of data driving chip output is swept by data
The source electrode that line (D1, D2, D3 ...) is input to thin film transistor (TFT) (TFT) is retouched, the drain electrode of thin film transistor (TFT) (TFT) is then connected to this
On the corresponding liquid crystal capacitances of TFT.When grid input high level signal (being strobed) of TFT, TFT is just connected, the number of input
It is believed that number to liquid crystal capacitance (Cs) charge；When the non-input high level signal of the grid of TFT (i.e. grid is not gated on), TFT is then
Cut-off, data-signal cannot be transferred to liquid crystal capacitance (Cs) and carry out charge and discharge.The driving of LCD TV uses " progressive scan ", from
G1 rises and chooses G always in ordern, then all rows of entire LCD TV be all strobed once, thus just constitute one it is complete
Picture, referred to as 1 frame.
But since delay decaying occurs in data scanning line in transmission process for data-signal, especially in liquid crystal electricity
Depending on scanning end, delay attenuation degree it is more serious.For example, as shown in Figure 3, it is assumed that shown by arrow direction is data signal transmission
Direction, A/B points are the end of data scanning line in figure, and C-terminal is data scanning line starting end, and the delay of data-signal decays by C
Point is gradually aggravated to A/B points direction.Data-signal (data) and adjacent rows (2160 rows and 2159 rows) are shown in Fig. 4 A
Grid signal (gate1 and gate2) ideal output waveforms；But since delay of the data-signal in data scanning line declines
Subtract, the practical output waveform at the ends A/B is as shown in Figure 4 B.When the thin film transistor (TFT) of the 2160th row is opened (in the 2160th row
When the Gate1 signals of input are high level), data-signal charges to liquid crystal capacitance, but because data-signal is in data scanning line
Decaying delay causes the portion voltage (fill part in figure) of the data-signal of the 2160th row to be accidentally charged to the liquid crystal electricity of the 2159th row
Hold, so really the 2160th row pixel is not opened completely, the 2159th row pixel does not completely close.It eventually leads on LCD TV
Image display brightness it is uneven, LCD TV display effect is poor.
Therefore, delay decaying of the data-signal in data scanning line can cause the image display brightness of LCD TV uneven
It is even, the problem of display effect difference.
Invention content
In order to solve factor present in the relevant technologies it is believed that number in data scanning line liquid crystal caused by delay decaying
Show the problem of the uniform display effect difference of brightness disproportionation, present disclose provides a kind of drive control method, apparatus and LCD TVs.
Wherein, the technical solution adopted in the present invention is：
A kind of drive control method, is applied to LCD TV, and the LCD TV is integrated with several thin film transistor (TFT)s, liquid crystal
Capacitance, grid drive chip and data driving chip, the method includes：
The grid signal exported by grid drive chip is obtained, controlling the thin film transistor (TFT) by the grid signal opens
It opens；
It obtains the data-signal that is exported by data driving chip, and the data-signal is passed through into the film that has turned on
Transistor is transmitted to the liquid crystal capacitance and charges；
With the charging of the liquid crystal capacitance, the LCD TV is driven to show image；
Whether the brightness of detection displayed image reaches the brightness of the data-signal instruction；
If it is not, then adjusting the parameter of the grid drive chip so that the grid drive chip according to adjustment ginseng
Number widens the effective width of the grid signal.
In the present invention, the method further includes：
If the brightness of displayed image reaches the brightness of the data-signal instruction, the grid drive chip is adjusted
Parameter so that the grid drive chip shortens the effective width of the grid signal according to the parameter of adjustment.
In the present invention, described that the thin film transistor (TFT) unlatching is controlled by the grid signal, including：
The grid signal is input to the grid of the thin film transistor (TFT) by controlling grid scan line；
When the grid signal is high effective, the channel controlled between the source electrode and drain electrode of the thin film transistor (TFT) is led
It is logical, to open the thin film transistor (TFT).
In the present invention, described that the data-signal is transmitted to the liquid crystal by the thin film transistor (TFT) having turned on
Capacitance charges, including：
The data-signal inputs the source electrode of the thin film transistor (TFT) by data scanning line；
By the channel between the source electrode be connected and drain electrode, by the data signal transmission to the film crystal
The drain electrode of pipe, the liquid crystal capacitance to being connected to the thin film transistor (TFT) drain electrode charge；
Until the liquid crystal capacitance completes charging, the channel between the source electrode and drain electrode is turned off.
A kind of drive dynamic control device, is applied to LCD TV, and the LCD TV is integrated with several thin film transistor (TFT)s, several
Liquid crystal capacitance, grid drive chip and data driving chip, described device include：
First acquisition module is configured as executing：The grid signal exported by grid drive chip is obtained, the grid are passed through
Pole signal controls the thin film transistor (TFT) and opens；
Second acquisition module is configured as executing：Obtain the data-signal that is exported by data driving chip, and by the number
It charges it is believed that number being transmitted to the liquid crystal capacitance by the thin film transistor (TFT) having turned on；
Display module is driven, is configured as executing：With the charging of the liquid crystal capacitance, the LCD TV is driven to show
Image；
Detection module is configured as executing：Whether the brightness of detection displayed image reaches the data-signal instruction
Brightness；
The first adjustment module is configured as executing：If the brightness of displayed image is not up to the data-signal instruction
Brightness, then adjust the parameter of the grid drive chip so that the grid drive chip widens institute according to the parameter of adjustment
State the effective width of grid signal.
In the present invention, described device further includes：
Second adjustment module is configured as executing：If the brightness of displayed image reaches the data-signal instruction
Brightness then adjusts the parameter of the grid drive chip so that described in parameter shortening of the grid drive chip according to adjustment
The effective width of grid signal.
In the present invention, first acquisition module includes：
First input unit is configured as executing：The grid signal is input to the film by controlling grid scan line
The grid of transistor；
Opening unit is configured as executing：When the grid signal is high effective, the source of the thin film transistor (TFT) is controlled
Channel conductive between pole and drain electrode, to open the thin film transistor (TFT).
In the present invention, second acquisition module includes：
Second input unit is configured as executing：The data-signal is inputted into the film crystalline substance by data scanning line
The source electrode of body pipe；
Charhing unit is configured as executing：By the channel between the source electrode be connected and drain electrode, by the data
Signal transmission charges to the drain electrode of the thin film transistor (TFT) to being connected to the liquid crystal capacitance that the thin film transistor (TFT) drains；
Unit is turned off, is configured as executing：Charging is completed to the liquid crystal capacitance, is turned off between the source electrode and drain electrode
Channel.
The disclosure also provides a kind of LCD TV, including liquid crystal display panel and applied to the LCD TV such as any of the above
Drive dynamic control device described in.
The technical scheme provided by this disclosed embodiment can include the following benefits：It is bright according to the image of liquid crystal display
Whether degree reaches the brightness of image specified by input data signal to adjust the effective width of grid signal, to reduce because of number
It is believed that the uniform image display effect difference problem of LCD TV epigraph brightness disproportionation caused by number decaying, makes LCD TV image
Display brightness is uniform, and the display image quality of LCD TV is optimized on the basis of not increasing other costs.
It should be understood that above general description and following detailed description is merely exemplary, this can not be limited
It is open.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the present invention
Example, and in specification together principle for explaining the present invention.
Fig. 1 is the sequence diagram of grid signal；
Fig. 2 is the controling circuit structure figure of LCD TV；
Fig. 3 is the scanning schematic diagram of LCD TV；
Fig. 4 A are the theoretical output waveforms of data-signal and grid signal；
Fig. 4 B are the Real output waveforms in the sides A/B data-signal and grid signal；
Fig. 5 is the flow chart of an exemplary embodiment of drive control method of the present invention；
Fig. 6 is the flow chart of the another exemplary embodiment of drive control method of the present invention；
Fig. 7 be in Fig. 5 corresponding embodiments step S110 in the flow chart of one embodiment；
Fig. 8 be in Fig. 5 corresponding embodiments step S120 in the flow chart of one embodiment；
Fig. 9 is the block diagram of an exemplary embodiment of drive dynamic control device of the present invention；
Figure 10 is the block diagram of the another exemplary embodiment of drive dynamic control device of the present invention；
Figure 11 is block diagram of first acquisition module in one embodiment of Figure 10 corresponding embodiments；
Figure 12 is block diagram of second acquisition module in one embodiment of Figure 10 corresponding embodiments；
Figure 13 is spread spectrum specification schematic diagram；
Figure 14 is the output waveform diagram of grid signal and data-signal when not adjusting grid signal；
Figure 15 is the timing diagram of grid signal and data-signal after the effective width for widening grid signal；
Figure 16 is the timing diagram of grid signal and data-signal after the effective width for shortening grid signal.
Specific implementation mode
Here will explanation be executed to exemplary embodiment in detail, the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent and the consistent all embodiments of the present invention.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects being described in detail in claims, of the invention.
Fig. 2 does not illustrate only the controling circuit structure of LCD TV, and shows the reality of drive control method of the present invention
Apply environment, implementation environment of the invention includes several thin film transistor (TFT)s being integrated in LCD TV, several liquid crystal capacitances, at least
One grid drive chip and at least a data driving chip, wherein for the LCD TV that resolution ratio is M × N, there is N grid
Scan line (G1, G2, G3, G4 ... Gn), N controlling grid scan line corresponds to N pin of grid drive chip respectively.It is N number of per a line
The grid of TFT is connected to by corresponding controlling grid scan line in grid drive chip.M datas are also integrated on LCD TV to sweep
Retouch line (D1, D2, D3, D4 ... Dm), M data scan lines distinguish M pin of corresponding data driving chip, and each data is swept
It retouches line the source electrode of one M TFT of row is connected in data driving chip, therefore the source of TFT that a column data scan line is connected
Electrode potential is all identical.The drain electrode connection liquid crystal capacitance (Cs) of TFT, when TFT is opened, data-signal passes through data scanning line
The drain electrode for being transferred to TFT charges to liquid crystal capacitance (Cs), and then shows image.Wherein, LCD TV driving uses " sweeps line by line
Retouch ", choose G always in order from G1n, then entirely often row is all strobed once display picture, and one is just constituted after having selected
Complete picture, referred to as 1 frame.Actual scanning process is：By the time of 1 frame be divided into N number of continuous period (T1, T2,
T3…Tn), each period only gate a controlling grid scan line (such as T1 gating G1, T2 gate G2 ... TnGate Gn), then 1
In the time of frame, entire picture is all to be about to be strobed successively in order 1 time.
As an a kind of exemplary embodiment of drive control method of the present invention, as shown in figure 5, the driving control of the present embodiment
Method processed includes：
In step s 110, the grid signal exported by grid drive chip is obtained, is controlled by grid signal described thin
Film transistor is opened.
As an embodiment of step S110 in the present embodiment, as shown in fig. 7, step S110 further comprises：Step
S111, grid signal are input to the grid of thin film transistor (TFT) by controlling grid scan line；By by being input to grid drive chip
Clock signal controls the output of grid signal, includes beginning output time and duration of the control per a line grid signal,
And grid signal is input to the grid of thin film transistor (TFT) by controlling grid scan line.Step S112, when the grid signal is height
When effective, the channel conductive between the source electrode of thin film transistor (TFT) and drain electrode is controlled, to open thin film transistor (TFT).Grid signal is height
Effectively, it is high level signal that can also be referred to as grid signal.The grid signal of high level is input to the grid of thin film transistor (TFT),
The grid signal of high level makes the source electrode of thin film transistor (TFT) to the channel conductive of drain electrode, and thin film transistor (TFT) at this time is opened.
In the step s 120, the data-signal exported by data driving chip is obtained, and by data-signal by having turned on
Thin film transistor (TFT) be transmitted to liquid crystal capacitance and charge.
As an embodiment of step S120 in the present embodiment, as shown in figure 8, step S120 further comprises：Step
Data-signal is inputted the source electrode of thin film transistor (TFT) by S121 by data scanning line；Step S122, by the source electrode that is connected with
Channel between drain electrode, by the drain electrode of data signal transmission to thin film transistor (TFT), to being connected to the liquid crystal of thin film transistor (TFT) drain electrode
Capacitor charging；Step S123 turns off the channel between source electrode and drain electrode until liquid crystal capacitance completes charging.When the grid of input
When signal is not up to the level demand in channel between unlatching source electrode and drain electrode, the channel shutdown between source electrode and source electrode.
In step s 130, with the charging of liquid crystal capacitance, driving LCD TV shows image.
In step S140, whether the brightness for detecting displayed image reaches the brightness of data-signal instruction.
In one embodiment, it can judge whether the brightness of displayed image reaches data letter by showing the grayscale of image
Number instruction brightness.
In step S150, if it is not, then adjusting the parameter of the grid drive chip so that grid drive chip according to
The parameter of adjustment widens the effective width of grid signal.
Height effective duration of effective width, that is, grid signal of grid signal, as shown in Figure 15 and Figure 16 in L,
L1, L2 are the effective width for illustrating grid signal.
The parameter of the grid drive chip adjusted can be the clock signal of adjustment control grid signal output, pass through tune
The frequency of whole clock signal makes the effective width of output grid signal increase, and exported grid signal control thin film transistor (TFT) is made to open
The time opened is not less than corresponding data signal to the charging time of liquid crystal capacitance where the pixel.The effective width of grid signal increases
Add, that is, making the time lengthening of the unlatching of thin film transistor (TFT), data-signal mistake can be effectively prevent to be charged to the liquid of adjacent rows
Brilliant capacitance.
As a kind of another exemplary embodiment of drive control method of the present invention, as shown in fig. 6, the present embodiment is also into one
Step includes：
In step S150 ', if the brightness of displayed image reaches the brightness of data-signal instruction, grid drive is adjusted
The parameter of dynamic chip so that grid drive chip shortens the clock cycle of grid signal according to the parameter of adjustment.
It can make effective width (the high electricity of grid signal by adjusting the frequency of the clock signal of control grid signal output
The flat duration) shorten, shorten the time that thin film transistor (TFT) is opened, the time that thin film transistor (TFT) is opened is made to be not less than data-signal
To the charging time of liquid crystal capacitance.
In LCD TV display driving, in order to optimize the EMC functions of drive system, the spread spectrum of driving can be generally opened,
The period for making grid signal in different time sections by opening spread spectrum is different.
By taking the LCD TV of 4K2K 120hz as an example, it is assumed that spread spectrum is set as (Fss_max/Fss_min) ± 3%, step-length
Fss is 75KHz, and specification is as shown in figure 13.
For the liquid crystal display platform of 4K2K 120hz, charging time t=1/120 (Hz) per a line liquid crystal capacitance/
2250 (Vtotal)=3.7us, influence time (spread spectrum period)=1/Fss=1/75KHz=13.33us that spread spectrum is opened, i.e.,
It is set as 3% hereinafter, the period of change of grid signal extension frequency is 13.33us in spread spectrum size.Corresponding in Figure 13, work as exhibition
When frequent rate is between Fclk_type and Fclk_max, the frequency of grid signal is correspondingly improved, in spread spectrum frequency in Fclk_
When between type and Fclk_min, the frequency of grid signal reduces accordingly.
One spread spectrum period corresponds approximately to the charging time of 4 row liquid crystal capacitances, i.e. spread spectrum a complete cycle can divide
For 4 1/4 periods, the charging time of 4 row liquid crystal is corresponded to respectively.In actually controlling, for spread spectrum adjustment of arranging in pairs or groups, grid signal
Relative to data-signal there are certain margin designs, the i.e. effective width of the effective width ratio grid signal of data-signal slightly
It is short, as shown in figure 14.
Corresponding in tetra- time cycles of A/B/C/D in Figure 13, the sequential relationship of data-signal opposing gate signal
Perfect condition and virtual condition are as shown in figure 14, and fill part is the region that data-signal mistake is filled in figure.By the big of filling region
It is small to can be seen that：Within the B times, since lastrow data-signal mistake is charged to the row and the row data signal mistake is charged to next line
Comprehensive descision, actual displayed brightness are consistent with desired level (i.e. the brightness of the instruction of data-signal)；Similarly, within the C times, by
It is charged to the amount bigger of next line in one's own profession signal mistake, therefore in the C times, actual displayed brightness ratio ideal value is dark；It is similarly real in the D times
Border display brightness is consistent with ideal value.
The driving of the display area is adjusted using step 150, as shown in figure 15, before not adjusting, time inner grid
The width of signal is L (i.e. the duration of high level is L), and the mistake of combined data signal fills the width of time adjustment grid signal
Degree, after adjustment, it is L1 that the width of time inner grid signal, which increases,；After the width increase of grid signal, each row grid signal
Start output time relative delay.
As shown in figure 15, it after extending the width of grid signal, effectively prevents data-signal and is filled in the mistake of adjacent rows, it can be with
The uniformity for the brightness that image is shown is effectively ensured.
For the image display brightness region consistent with ideal value, as shown in figure 16, the exhibition being arranged in being controlled due to system
Frequently, there are certain allowances relative to data-signal for grid signal, especially in the negative half-cycle (i.e. C/D) of spread spectrum specification, phase
For the positive half period (i.e. A/B) in the period in spread spectrum specification, in the negative half-cycle (i.e. C/D) in the period of spread spectrum specification
The effective width of grid signal is wider, allowance bigger of the grid signal relative to data-signal.As shown in figure 16, by grid signal
Effective width L2 is shorten to by L, while after ensureing shortening, there is no data-signal mistakes to be charged to adjacent rows.Grid signal is wide
After degree variation, by scanning sequency, the grid signal of other rows has corresponding shift to an earlier date.
After adjustment by Figure 15 and Figure 16, using there are one step 150 (relative to Figure 15) adjustment post tensioned unbonded prestressed concrete signal meetings
Total delay time T1, using step 150 ' (relative to Figure 16) adjusts total pre-set time T2 there are one the meetings of post tensioned unbonded prestressed concrete signal,
Delay time T1 is made up with pre-set time T2, ensure that the overall time of 1 frame picture inner grid signal is constant, so using this hair
Bright drive control method control LCD TV, which is shown, to perceive image delay by human eye caused by adjusting grid signal width.
The display of drive control method control LCD TV through the invention can make liquid crystal display brightness uniformity, substantially
The actual displayed image quality effect of LCD TV is optimized, picture uniformity, sophistication improve, and reduce the flicker of human eye perception
Sense, the user experience is improved.
In existing control method, in order to drop influence of the low signal attenuation to liquid crystal display, generally by increasing liquid crystal display
M1/M2 film thickness (i.e. the trace widths such as data scanning line, controlling grid scan line and thickness) come reduce signal decaying and loss, still
The cost for increasing liquid crystal display control can be carried using the drive control method of the present invention on the basis of not improving cost
Rise the display effect of LCD TV.
Moreover, corresponding to the LCD TV of different refreshing frequencys, after drive control method using the present invention, can share
Light shield (Mask), improves the generalization of light shield, and the LCD TV that need not be directed to different refreshing frequencys targetedly designs light
Cover.
As an a kind of exemplary embodiment of drive dynamic control device of the present invention, as shown in figure 9, the driving control of the present embodiment
System states device and includes：
First acquisition module 110, is configured as executing：The grid signal exported by grid drive chip is obtained, grid are passed through
Pole signal controls the thin film transistor (TFT) and opens.
As an exemplary embodiment of the first acquisition module of the present embodiment 110, as shown in figure 11, the first acquisition module
110 further comprise：First input unit 111 is configured as execution and grid signal is input to film by controlling grid scan line
The grid of transistor；Opening unit 112 is connect with the first input unit 111, is configured as executing when grid signal is high effectively
When, the channel conductive between the source electrode of thin film transistor (TFT) and drain electrode is controlled, to open thin film transistor (TFT).
Second acquisition module 120, the module connect with the first acquisition module 110, are configured as executing：Acquisition is driven by data
The data-signal of dynamic chip output, and data-signal is transmitted to liquid crystal capacitance by the thin film transistor (TFT) having turned on and is filled
Electricity.
As an exemplary embodiment of the second acquisition module of the present embodiment 120, as shown in figure 12, the second acquisition module
120 further comprise：Second input unit 121 is configured as executing that data-signal is brilliant by data scanning line input film
The source electrode of body pipe；Charhing unit 122 is configured as executing the channel by between source electrode be connected and drain electrode, data is believed
It number is transmitted to the drain electrode of thin film transistor (TFT), the liquid crystal capacitance to being connected to thin film transistor (TFT) drain electrode charges；Turn off unit 123, quilt
It is configured to execute：It completes to charge to liquid crystal capacitance, turns off the channel between the source electrode and drain electrode.
Display module 130 is driven, is configured as executing：With the charging of liquid crystal capacitance, driving LCD TV shows image.
Detection module 140 is configured as executing：Whether the brightness of detection displayed image reaches the bright of data-signal instruction
Degree.
The first adjustment module 150, the module are connect with detection module 140, are configured as executing：If displayed image
Brightness is not up to the brightness of data-signal instruction, then adjusts the parameter of grid drive chip so that grid drive chip is according to tune
Whole parameter widens the effective width of grid signal.
It is appreciated that these modules can by hardware, software, or a combination of both realize.When realizing in hardware
When, these modules may be embodied as one or more hardware modules.When being realized with software mode, these modules may be embodied as
The one or more computer programs executed on the one or more processors.
As a kind of another exemplary embodiment of drive dynamic control device of the present invention, as shown in Figure 10, the drive of the present embodiment
Control device is moved, further includes：
Second adjustment module 150 ', the module are connect with detection module 140, are configured as executing：If displayed image
Brightness reach data-signal instruction brightness, then adjust the parameter of grid drive chip so that grid drive chip is according to tune
Whole parameter shortens the effective width of grid signal.
The function of modules and the realization process of effect specifically refer to right in above-mentioned drive control method in above-mentioned apparatus
The realization process of step is answered, details are not described herein.
Invention additionally discloses a kind of LCD TV, including LCD TV and applied to the LCD TV such as Fig. 9 to scheming
The drive dynamic control device of 12 any embodiments.
It should be understood that the invention is not limited in the precision architectures for being described above and being shown in the accompanying drawings, and
And various modifications and change can be being executed without departing from the scope.The scope of the present invention is limited only by the attached claims.
Claims (9)
1. a kind of drive control method, is applied to LCD TV, the LCD TV is integrated with several thin film transistor (TFT)s, several liquid
Brilliant capacitance, grid drive chip and data driving chip, which is characterized in that the method includes：
The grid signal exported by grid drive chip is obtained, controlling the thin film transistor (TFT) by the grid signal opens；
It obtains the data-signal that is exported by data driving chip, and the data-signal is passed through into the film crystal that has turned on
Pipe is transmitted to the liquid crystal capacitance and charges；
With the charging of the liquid crystal capacitance, the LCD TV is driven to show image；
Whether the brightness of detection displayed image reaches the brightness of the data-signal instruction；
If it is not, then adjusting the parameter of the grid drive chip so that the grid drive chip adds according to the parameter of adjustment
The effective width of the width grid signal.
2. drive control method according to claim 1, which is characterized in that the method further includes：
If the brightness of displayed image reaches the brightness of the data-signal instruction, the ginseng of the grid drive chip is adjusted
Number so that the grid drive chip shortens the effective width of the grid signal according to the parameter of adjustment.
3. drive control method according to claim 1, which is characterized in that described by described in grid signal control
Thin film transistor (TFT) is opened, including：
The grid signal is input to the grid of the thin film transistor (TFT) by controlling grid scan line；
When the grid signal is high effective, the channel conductive between the source electrode and drain electrode of the thin film transistor (TFT) is controlled, with
Open the thin film transistor (TFT).
4. drive control method according to claim 3, which is characterized in that it is described by the data-signal by having turned on
The thin film transistor (TFT) be transmitted to the liquid crystal capacitance and charge, including：
The data-signal inputs the source electrode of the thin film transistor (TFT) by data scanning line；
By the channel between the source electrode be connected and drain electrode, by the data signal transmission to the thin film transistor (TFT)
Drain electrode, the liquid crystal capacitance to being connected to the thin film transistor (TFT) drain electrode charge；
Until the liquid crystal capacitance completes charging, the channel between the source electrode and drain electrode is turned off.
5. a kind of drive dynamic control device, is applied to LCD TV, the LCD TV is integrated with several thin film transistor (TFT)s, several liquid
Brilliant capacitance, grid drive chip and data driving chip, which is characterized in that described device includes：
First acquisition module is configured as executing：The grid signal exported by grid drive chip is obtained, is believed by the grid
Number control thin film transistor (TFT) is opened；
Second acquisition module is configured as executing：The data-signal exported by data driving chip is obtained, and the data are believed
Number being transmitted to the liquid crystal capacitance by the thin film transistor (TFT) having turned on charges；
Display module is driven, is configured as executing：With the charging of the liquid crystal capacitance, the LCD TV display figure is driven
Picture；
Detection module is configured as executing：Whether the brightness of detection displayed image reaches the brightness of the data-signal instruction；
The first adjustment module is configured as executing：If the brightness of displayed image is not up to the bright of the data-signal instruction
Degree, then adjust the parameter of the grid drive chip so that the grid drive chip widens the grid according to the parameter of adjustment
The effective width of pole signal.
6. drive dynamic control device according to claim 5, which is characterized in that described device further includes：
Second adjustment module is configured as executing：If the brightness of displayed image reaches the brightness of the data-signal instruction,
Then adjust the parameter of the grid drive chip so that the grid drive chip shortens the grid according to the parameter of adjustment and believes
Number effective width.
7. drive dynamic control device according to claim 5, which is characterized in that first acquisition module includes：
First input unit is configured as executing：The grid signal is input to the film crystal by controlling grid scan line
The grid of pipe；
Opening unit is configured as executing：When the grid signal is high effective, control the source electrode of the thin film transistor (TFT) with
Channel conductive between drain electrode, to open the thin film transistor (TFT).
8. drive dynamic control device according to claim 7, which is characterized in that second acquisition module includes：
Second input unit is configured as executing：The data-signal is inputted into the thin film transistor (TFT) by data scanning line
Source electrode；
Charhing unit is configured as executing：By the channel between the source electrode be connected and drain electrode, by the data-signal
It is transmitted to the drain electrode of the thin film transistor (TFT), the liquid crystal capacitance to being connected to the thin film transistor (TFT) drain electrode charges；
Unit is turned off, is configured as executing：Charging is completed to the liquid crystal capacitance, is turned off logical between the source electrode and drain electrode
Road.
9. a kind of LCD TV, which is characterized in that including liquid crystal display panel and applied to the LCD TV such as claim 5 to
8 any one of them drive dynamic control devices.
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| CN201810737284.0A CN108806631A (en) | 2018-07-06 | 2018-07-06 | A kind of drive control method, apparatus and LCD TV |
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Address after: 266000, No. 218, Bay Road, Qingdao economic and Technological Development Zone, Shandong Applicant after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Applicant before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |
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Application publication date: 20181113 |