CN102376279A - Liquid crystal display device and driving method thereof - Google Patents
Liquid crystal display device and driving method thereof Download PDFInfo
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- CN102376279A CN102376279A CN2010102519274A CN201010251927A CN102376279A CN 102376279 A CN102376279 A CN 102376279A CN 2010102519274 A CN2010102519274 A CN 2010102519274A CN 201010251927 A CN201010251927 A CN 201010251927A CN 102376279 A CN102376279 A CN 102376279A
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Abstract
The invention relates to a liquid crystal display device and a driving method thereof. The liquid crystal display device comprises a time sequence control circuit, a scanning driving circuit, a data driving circuit and a liquid crystal display panel, and the liquid crystal display panel comprises multiple pixels. The time sequence control circuit comprises a data analysis module, wherein the data analysis module is used for receiving and analyzing every frame of image data; in n lines of the pixels which are displayed continuously in one frame of the image data, when m lines of pixels which are displayed continuously display a black picture (n>=4, n>m>=2), the data analysis module outputs a first polarity inversion control signal to the data driving circuit, the data driving circuit is used for processing a data signal according to the first polarity inversion control signal so as to generate a plurality of gray scale voltages and the gray scale voltages are provided to the liquid crystal display panel; and when the plurality of pixels of the liquid crystal display panel display the frame of image, in the m lines of the pixels, which are displayed continuously and display the black picture, the polarities of all the pixels positioned in the same line are the same.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator and driving method thereof.
Background technology
Characteristics such as volume is little because of having for liquid crystal indicator, light weight, thin thickness, power consumption are low, do not glimmer, radiation is few have been widely used in electronic equipments such as TV, notebook computer, mobile phone, personal digital assistant.
Liquid crystal indicator generally includes display panels and the module backlight of planar light is provided for this display panels.This display panels generally includes public electrode, pixel electrode and a plurality of liquid crystal molecule that driven by this public electrode and this pixel electrode and reverse.When the change in voltage that is applied between this public electrode and the pixel electrode, the windup-degree of this liquid crystal molecule is different, thereby the light percent of pass of this display panels is different, and the cooperation colored filter can be realized the demonstration of different pictures.
Yet, it is found that liquid crystal indicator is carrying out data processing or image when showing, produce the noise as the buzzing through regular meeting, industry is called: audible noise (AudibleNoise).Because the existence of audible noise not only causes the user quietly working and life under the environment, and seriously, also may let the user think that liquid crystal indicator damages, and causes the inconvenience in the live and work by mistake.
Summary of the invention
For liquid crystal indicator in the solution prior art produces the technical matters of audible noise, be necessary to provide a kind of liquid crystal indicator that can improve audible noise.
Also be necessary to provide a kind of driving method that can improve the liquid crystal indicator of audible noise.
A kind of liquid crystal indicator; It comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels; This display panels comprises a plurality of pixels, and this sequential control circuit comprises a sequential control module, and this time-sequence control module receives each frame image data; And according to this view data generation clock signal and data-signal; And export this clock signal to this data drive circuit and scan drive circuit with the Control work sequential, and export data-signal to this data drive circuit, a plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels are with display image.This sequential control circuit also comprises a data analysis module; This data analysis module is used for receiving and analyzing each frame image data, in the capable pixel of n of the continuous demonstration of a frame image data, when the capable pixel of the m that shows continuously shows black picture; N >=4 wherein; N＞m >=2, m and n are natural number, and this data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit; This data drive circuit is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels; When making a plurality of pixels of this display panels show this two field picture, that this shows continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.
A kind of liquid crystal indicator; It comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels; This display panels comprises a plurality of pixels, and this sequential control circuit comprises a sequential control module, and this time-sequence control module receives each frame image data; And according to this view data generation clock signal and data-signal; And export this clock signal to this data drive circuit and scan drive circuit with the Control work sequential, and export data-signal to this data drive circuit, a plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels are with display image.This sequential control circuit also comprises a data analysis module; This data analysis module is used for receiving and analyzing each frame image data, and in the capable pixel of n of the continuous demonstration of a frame image data, the capable pixel of the m that shows continuously shows when black picture and the capable pixel of other n-m show white picture; N >=4 wherein; N＞m >=2, m and n are natural number, and this data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit; This data drive circuit is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels; When making a plurality of pixels of this display panels show this two field picture, that this shows continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.
A kind of liquid crystal indicator; It comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels; This display panels comprises a plurality of pixels, and this sequential control circuit comprises a sequential control module, and this time-sequence control module receives each frame image data; And according to this view data generation clock signal and data-signal; And export this clock signal to this data drive circuit and scan drive circuit with the Control work sequential, and export data-signal to this data drive circuit, a plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels are with display image.This sequential control circuit also comprises a data analysis module; This data analysis module is used for receiving and analyzing each frame image data, and in the capable pixel of n of the continuous demonstration of a frame image data, the capable pixel of the m that shows continuously shows when the pixel that has at least two row to show continuously in black picture and the capable pixel of other n-m shows white picture; N >=4 wherein; N＞m >=2, m and n are natural number, and this data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit; This data drive circuit is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels; When making a plurality of pixels of this display panels show this two field picture, that this shows continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.
A kind of liquid crystal indicator; It comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels; This display panels comprises a plurality of pixels, and this sequential control circuit comprises a sequential control module, and this time-sequence control module receives each frame image data; And according to this view data generation clock signal and data-signal; And export this clock signal to this data drive circuit and scan drive circuit with the Control work sequential, and export data-signal to this data drive circuit, a plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels are with display image.This sequential control circuit also comprises a data analysis module; This data analysis module is used for receiving and analyzing each frame image data; In the capable pixel of n of the continuous demonstration of a frame image data, when the capable pixel of the m that shows continuously shows black picture, and the pixel that has at least two row to show continuously in the capable pixel of other n-m shows white picture; N >=4 wherein; N＞m >=2, m and n are natural number, and this data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit; This data drive circuit is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels, makes a plurality of pixels of this display panels show this two field picture with the mode of row counter-rotating.
A kind of driving method of liquid crystal indicator, this driving method comprises the steps: to receive view data; And this view data of analysis; In the arbitrarily continuous capable pixel of n of the two field picture that this liquid crystal indicator desire shows, there is the capable pixel of continuous m to show black picture, wherein n >=4; M >=2 o'clock; M and n are natural number, and when then controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
Compared with prior art, in liquid crystal indicator of the present invention and the driving method thereof, through view data is analyzed; In the capable pixel of n of the continuous demonstration of a frame image data, when the capable pixel of the m that shows continuously shows black picture, n >=4 wherein; N＞m >=2, m and n are natural number, when a plurality of pixels of controlling this display panels show this two field picture; That should show continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.Thus; The capable pixel of m that is positioned at the black picture of this demonstration of same row does not exist polarity to switch; Therefore when the capable pixel of this m shows; Change in voltage on this column data line is less, and then the less difficult generation of the charging and discharging currents instantaneous variation of the ceramic condenser on the printed circuit board (PCB) expands and shrink, thereby the phenomenon that corresponding printed circuit board (PCB) produces audible noise is enhanced.
Description of drawings
Fig. 1 is the schematic equivalent circuit of liquid crystal indicator one preferred embodiments of the present invention.
Fig. 2 is the synoptic diagram of row counter-rotating and frame inversion driving mode.
Fig. 3 is the synoptic diagram of several kinds of common inversion driving modes.
Fig. 4 is the circuit block diagram of data analysis module first embodiment of liquid crystal indicator shown in Figure 1.
Fig. 5 is a kind of distortion embodiment illustrated in fig. 4.
Fig. 6 is the circuit block diagram of data analysis module second embodiment of liquid crystal indicator shown in Figure 1.
Fig. 7 is the process flow diagram of the driving method of liquid crystal indicator shown in Figure 1.
The main element symbol description
Data analysis module 120,220
Time-sequence control module 130
Sweep trace 161
Thin film transistor (TFT) 167
Buffer 121,221
Decision circuitry 123,223
Reversal of poles control circuit 125,225
Data control circuit 124,228
Counter 227
Embodiment
For improving the phenomenon of the audible noise that liquid crystal indicator produces, the present invention has at first carried out research and analysis to the reason that audible noise produces.Particularly, we find that when one of source of audible noise was liquid crystal indicator work, its printed circuit board (PCB) generation vibration caused.For suppressing the noise that the P.e.c. panel vibration produces, can provide acoustical cotton that printed circuit board (PCB) is coated, yet acoustical cotton belong to combustible material, this improvement scheme makes liquid crystal indicator have the higher unsafe factor of burning risk.
The further profound source of analyzing noise; We find: the noise (audible noise) that falls into the human auditory system scope mainly produces when showing some specific picture at liquid crystal indicator; And when liquid crystal indicator shows nonspecific picture; Noise is very little, and is difficult for usually being realized.For instance, in the pixel of the arranged of liquid crystal indicator, if continuously the multirow pixel shows white picture, and the continuous multirow pixel adjacent with above-mentioned pixel will produce bigger audible noise when showing the situation of black picture.
Find through analyzing, when liquid crystal indicator shows the specific picture of this type, when wherein black picture carries out the polarity switching; Because the variation of the voltage on the same data line is bigger; Make that the charging and discharging currents instantaneous variation of the ceramic condenser on the printed circuit board (PCB) is bigger, and then the dielectric of ceramic condenser expands at direction of an electric field, on plane, shrink perpendicular to this direction of an electric field; Thereby cause the expansion and the contraction of printed circuit board (PCB), produce noise and vibration.Thus, according to above-mentioned analysis result, the present invention provides following embodiment to improve audible noise.
See also Fig. 1, the schematic equivalent circuit of its liquid crystal indicator first embodiment of the present invention.This liquid crystal indicator 100 comprises a sequential control circuit 110, a data drive circuit 140, scan driving circuit 150 and a display panels 160.This sequential control circuit 110 comprises a data analysis module 120 and a sequential control module 130.
This time-sequence control module 130 receives each frame image data; And according to this view data generation clock signal and data-signal; And export this clock signal to this data drive circuit 140 and scan drive circuit 150 with the Control work sequential, and export data-signal to this data drive circuit 140.This data analysis module 120 is used for receiving and analyzing each frame image data, and according to analysis result output polarity reverse control signal to this data drive circuit 140, to control the reversal of poles mode (reversal of poles characteristic in other words) of each two field picture.In concrete the application, this sequential control circuit 110 can be an integrated chip, and promptly this data analysis module 120 and sequential control module 130 are integrated in the chip.Certainly in change embodiment, this sequential control circuit 110 can comprise respectively that also the chip and of this data analysis module 120 comprises the chip of this time-sequence control module 130.
This scan drive circuit 150 is used to receive this clock signal, and under the control of this clock signal, provides series of scanning signals to this display panels 160.This data drive circuit 140 is used to receive this data-signal, clock signal and this reversal of poles control signal, and when this display panels 160 is scanned, exports a plurality of gray scale voltages to this display panels 160.Particularly, produce a plurality of gray scale voltages, and under the control of this clock signal, should provide to display panels 160 by a plurality of gray scale voltages thereby this data drive circuit 140 carries out data processing according to this reversal of poles control signal to this data-signal.This display panels 160 receives this series of scanning signals and a plurality of gray scale voltage realizes that picture shows.
This display panels 160 comprises that multi-strip scanning line 161, many data lines 163 and a plurality of sweep trace 161 and data line 163 intersect a plurality of pixels 165 that define.Each pixel 165 comprises a thin film transistor (TFT) 167 and a liquid crystal capacitance 169, and wherein, the grid of this thin film transistor (TFT) 167 connects corresponding one scan line 161, and source electrode connects a corresponding data line 163, and drain electrode connects this liquid crystal capacitance 169.
A plurality of pixels 165 that definition is connected with same sweep trace 161 are one-row pixels 165, and a plurality of pixels 165 that are connected with same data line 163 are a row pixel 165.This multi-strip scanning line 161 is electrically connected this scan drive circuit 150, is used to receive this series of scanning signals.These many data lines 163 are electrically connected this data drive circuit 140, are used for receiving these a plurality of gray scale voltages, and under the control of this series of scanning signals, should be provided to this a plurality of pixels 165 in regular turn by a plurality of gray scale voltages.Particularly; This series of scanning signals is a plurality of high level pulses; This multi-strip scanning line 161 is applied this a plurality of high level pulses in regular turn, and when a sweep trace 161 was applied in high level pulse, the thin film transistor (TFT) 167 of the one-row pixels 165 that is connected with this sweep trace 161 was opened; A plurality of gray scale voltages on these many data lines 163 are write a plurality of liquid crystal capacitances 169 of this row pixel 165 respectively at this moment, and promptly this row pixel 165 realizes that pictures show.Further, if two or multi-strip scanning line 161 sweep signals that are applied in continuous in time then define two row or the multirow pixel 165 that are connected with these two or multi-strip scanning line 161 and show for continuous.For the driving of routine, therefore the row of two on two adjacent sweep traces 161 pixel 165 belongs to two row pixels 165 of continuous demonstration usually because these two sweep traces 161 are applied in sweep signal continuously.
For instance, all pixels 165 that are connected with article one sweep trace 161 are defined as the first row pixel 165, and all pixels 165 that are connected with article one data line 163 are defined as the first row pixel 165.If article one and second sweep trace 161 are applied sweep signal in regular turn, then this first row pixel 165 and the second row pixel 165 are the pixel 165 that shows continuously.If article one, the 3rd and the 5th sweep trace 161 are applied sweep signal in regular turn, then this first row, second row and fifth line pixel 165 be continuously the pixel 165 of demonstration.
Further, when a plurality of pixels 165 of this display panels 160 show a two field picture,, then define this pixel 165 and show black picture if the GTG that a pixel 165 shows is lower than one first predetermined GTG.For instance, for the image of 256 GTGs, this first predetermined GTG can be 32 GTGs, and preferably, the first predetermined GTG also can be 16 GTGs.Relatively, if the GTG that a pixel 165 shows is higher than one second predetermined GTG, then defines this pixel 165 and show white picture.For instance, for the image of 256 GTGs, this second predetermined GTG can be 200 GTGs, and preferably, the second predetermined GTG also can be 224 GTGs.Certainly, the value of this first, second predetermined GTG also can be set according to actual needs.
Further; When a plurality of pixels 165 of this display panels 160 show a two field picture; Show black picture if comprise the pixel more than 70% in the one-row pixels 165, then define this journey pixel 165 and show black picture that promptly this row pixel 165 belongs to the pixel column that shows black picture.Relatively, show white picture, then define this journey pixel 165 and show white picture that promptly this row pixel 165 belongs to the pixel column that shows white picture if comprise the pixel 165 more than 70% in the one-row pixels 165.Certainly; Above-mentioned number percent also can change according to actual needs; Such as: in other changes embodiment, can define the pixel 165 that comprises in the one-row pixels 165 more than 90% and show black picture (perhaps white picture), this journey pixel 165 is defined as the pixel column that shows black picture (perhaps white picture).
Particularly; When 120 pairs one frame image datas of this data analysis module are analyzed, in the capable pixel 165 of n of the continuous demonstration of a frame image data, when the capable pixel 165 of the m that shows continuously shows black picture; N >=4 wherein; N＞m >=2, m and n are natural number, and this data analysis module 120 outputs one first reversal of poles controls signal to this data drive circuit 140.This data drive circuit 140 is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels 160; When making a plurality of pixels 165 of this display panels 160 show these two field pictures; Should show continuously and demonstration is deceived in the capable pixel 165 of m of picture, is positioned at the polarity identical (being that polarity does not change) of all pixels 165 of same row.
Further; In one embodiment; When 120 pairs one frame image datas of this data analysis module are analyzed; Have only in the capable pixel 165 of n of the continuous demonstration of a frame image data, the capable pixel 165 of the m that shows continuously shows when black picture and the capable pixel 165 of other n-m show white picture, these data analysis module 120 these first reversal of poles control signals of output.For instance, in this frame image data, n=6; During m=3; 3 row (m the is capable) pixels 165 that promptly comprise continuous demonstration show black picture, when other 3 row (n-m is capable) pixels 165 show white picture, and these data analysis module 120 these first reversal of poles control signals of output.
In a kind of change embodiment; When 120 pairs one frame image datas of this data analysis module are analyzed; Have only in the capable pixel 165 of n of the continuous demonstration of working as a frame image data; The m that shows continuously is capable, and pixel 165 shows black picture, and the pixel 165 that has at least two row to show continuously in the capable pixel 165 of other n-m shows white picture, these data analysis module 120 these first reversal of poles control signals of output.For instance, in this frame image data, n=6; During m=3; 3 row (m the is capable) pixels 165 that promptly comprise continuous demonstration show black picture, when the pixel 165 that has two row to show continuously in other 3 row (n-m is capable) shows white picture, and these data analysis module 120 these first reversal of poles control signals of output.
More specifically; When this data drive circuit 140 is controlled the reversal of poles mode of a two field picture according to this first reversal of poles control signal; In one embodiment; In the time of can controlling a plurality of pixels 165 these two field pictures of demonstration of this display panels 160; The polarity of all pixels 165 that is positioned at same row is all identical, and particularly, this data drive circuit 140 can be controlled this display panels 160 according to this first reversal of poles control signal a plurality of pixels 165 show this two field picture with the mode of row counter-rotating or frame counter-rotating.Wherein, row counter-rotatings comprises single-row counter-rotating and biserial counter-rotating, consults Fig. 2, single-row counter-rotating, biserial counter-rotating and frame counter-rotating respectively as Fig. 2 (1), (2) reach shown in (3).
Further; When 120 pairs one frame image datas of this data analysis module are analyzed; When a frame image data did not meet the situation of above-mentioned " in the capable pixel 165 of n that shows continuously, the m that shows continuously is capable, and pixel 165 shows black picture, wherein n >=4; n＞m >=2 ", this data analysis module 120 can be exported one second reversal of poles and control signal to this data drive circuit 140.This data drive circuit 140 is handled this data-signal according to this second reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels 160, makes a plurality of pixels 165 of this display panels 160 show this two field picture with common inversion driving mode.See also Fig. 3, it is the synoptic diagram of several kinds of common inversion driving modes.This common inversion driving mode can be that a counter-rotating, a line add the counter-rotating of two lines, single line reverses or two-wire reverses, and its mid point counter-rotating, a line add the counter-rotating of two lines, single line reverses and the two-wire counter-rotating reaches shown in (4) like (1), (2), (3) of Fig. 3 respectively.
See also Fig. 4, it is the synoptic diagram of first embodiment of this data analysis module 120.This data analysis module 120 comprises a buffer 121, a decision circuitry 123 and a reversal of poles control circuit 125.Each frame image data that this buffer 121 is used for receiving in regular turn and temporary external circuit (as: Low Voltage Differential Signal connector) provides; This decision circuitry 123 is used for reading each frame image data of these buffer 121 storages; And this each frame image data analyzed, and according to this reversal of poles control circuit 125 these first reversal of poles control signals of output or second reversal of poles control signals of analysis result control.Please further consult Fig. 5; In a kind of change embodiment; This buffer 121 can further provide its image stored data to this time-sequence control module 130, and then this time-sequence control module 130 can receive view data and view data is carried out data processing.
This decision circuitry 123 comprises a tandom number generator 122, a data control circuit 124.This tandom number generator 122 produces many group random numbers in regular turn and provides these many group random numbers to this data control circuit 124.Comprise k addressing address in every group of random number, k pixel data in the corresponding one-row pixels 165 distinguished in this k addressing address.This data control circuit 124 is according to reading k pixel data in the one-row pixels in this k the frame image data of addressing address from this buffer 121, and analyzes this k pixel data.If the data of this k pixel have seven ten at least percent pixel data to belong to black picture data, then this row pixel 165 belongs to and shows the pixel column of deceiving picture.This data control circuit 124 is further according to the analysis of above-mentioned analysis to k pixel data; Reach total number of lines of pixels and count said black picture pixel is capable; When there being said n >=4; During the situation of n＞m >=2, this reversal of poles control circuit 125 these first reversal of poles control signals of output of these data control circuit 124 controls; Otherwise these reversal of poles control circuit 125 these second reversal of poles control signals of output of these data control circuit 124 controls.Wherein, the value of k can be set according to actual needs, as is set in k=200.In the preferred embodiment, if this k pixel data all belongs to black picture data, then this data control circuit 124 judges that this row pixel 165 belongs to the pixel column that shows black picture.
In one embodiment, every group of random number can comprise two parts, and these two parts are defined as a first and second portion respectively, and the random number of these two parts is twice generation successively of this tandom number generator.That is to say; Possibly there is the identical situation of part in the random number of first with the random number of second portion; Thereby possibly there is the identical situation of part in k1 corresponding addressing address of the random number of this first with k2 corresponding addressing address of the random number of second portion.For instance, if the value of every group of random number is k=200, k1=100; K2=100; Then this tandom number generator 122 produces 100 random numbers of first earlier, produce 100 random numbers of second portion again, and 100 random numbers of this first maybe be identical with 100 random number parts of this second portion; Therefore; The corresponding possible parts in 100 addressing addresses of corresponding 100 the addressing addresses of 100 random numbers of first and the random number of second portion are identical, and then in the process of 200 pixel datas that read according to these 200 addressing addresses, the partial pixel data correspondingly possibly occur and be read and analyzed twice.This tandom number generator 122 at twice or more times produce every group of random number, relatively can reach the analysis result effect more accurately that makes this data control circuit 124.
Further; In one embodiment; This data control circuit 124 can be analyzed each data of this k pixel data, if this k pixel data has seven ten at least percent data to belong to white picture data, then this row pixel 165 belongs to the pixel column that shows white picture.When this data control circuit 124 is found through counting: in the capable pixel of n that shows continuously; The capable pixel of the m that shows continuously shows black picture; N >=4; N＞m >=2, and have at least the continuous pixel that shows of two row to show white picture in the capable pixel of other n-m, then this data control circuit 124 is controlled this reversal of poles control circuit 125 these first reversal of poles control signals of output output.Preferably, if capable this k pixel data of other n-m all belongs to white picture data, then these data control circuit 124 these reversal of poles control circuits of control are exported this first reversal of poles control signal.
Below in conjunction with Fig. 1 and Fig. 4, be example with a two field picture, the principle of work of liquid crystal indicator preferred embodiment of the present invention is introduced.
One Low Voltage Differential Signal connector (figure does not show) provides a frame image data to this sequential control circuit 110, and further, this frame image data is provided to buffer 121 and this time-sequence control module 130 of 120 of this data analysis moulds.Wherein, this frame image data comprises the multirow pixel data.
It is other to random number that should the multirow pixel data that this tandom number generator 122 produces polycomponents, every group of corresponding one-row pixels data of random number wherein, and comprise a plurality of addressing address.Particularly, this tandom number generator 122 produces every group of random number at twice, and the quantity of supposing every group of random number is 200, and then this tandom number generator 122 produces 100 random numbers earlier, produces other 100 random numbers again.
Should many group random numbers be provided to this data control circuit 124 in regular turn, this data control circuit 124 reads corresponding pixel data according to a plurality of addressing address of being somebody's turn to do many group random numbers from this buffer 121, and the pixel data that reads is analyzed.Particularly; This data control circuit 124 is according to a plurality of addressing address of every group of random number; In the corresponding one-row pixels data of this group random number; Read a plurality of pixel datas that should a plurality of addressing address, when the quantity of this group random number was 200, this data control circuit 124 read 200 pixel datas in the corresponding one-row pixels data from this buffer 121.This data control circuit 124 is analyzed through the pixel data that reads (as: these 200 pixel datas) from each row pixel data; Judge that this row pixel 165 is that black picture data is capable, or white picture data is capable, whether meets the situation of " in the capable pixel 165 of n that shows continuously; the black picture of capable pixel 165 demonstrations of the m that shows continuously; n >=4, n＞m >=2, and the white picture of pixel 165 demonstrations that has at least two row to show continuously in the capable pixel of other n-m " to judge in this frame image data; If the result is for being these reversal of poles control circuit 125 these first reversal of poles control signals of output of these data control circuit 124 controls; If the result is for denying this reversal of poles control circuit 125 these second reversal of poles control signals of output of these data control circuit 124 controls.
Further, this data control circuit 124 also can be set value and the condition of n and m, as setting: this n=10, m=5, and the capable pixel 165 of other n-m be the pixel column that shows continuously, promptly 5 row black, 5 go white situation; Perhaps n=8, m=4, and the capable pixel 165 of other n-m is the pixel column that shows continuously, i.e. black, the white situation of 4 row of 4 row; Perhaps n=3, m=3, and the capable pixel of other n-m is the pixel column that shows continuously, i.e. black, the white situation of 3 row of 3 row.With n=8; M=4; And the capable pixel 165 of other n-m is an example for the condition of the continuous pixel column that shows; This data control circuit 124 also can be set: comprise 8 row pixel datas of continuous demonstration in this frame image data, wherein the continuous pixel that shows 165 of 4 row shows black picture, and the continuous pixel that shows 165 of other 4 row shows white picture.And when a two field picture comprises the capable pixel of n that meets above-mentioned condition, these reversal of poles control circuit 125 these first reversal of poles control signals of output of these data control circuit 124 controls; Otherwise, these reversal of poles control circuit 125 these second reversal of poles control signals of output of these data control circuit 124 controls.
On the other hand; After this time-sequence control module 130 receives this frame image data; This frame image data is carried out data processing produce clock signal and data-signal; And this clock signal offered scan drive circuit 150 and data drive circuit 140 is used for the Control work sequential, also further this data-signal is provided to this data drive circuit 140.
This scan drive circuit 150 receives this clock signal, and the multi-strip scanning line 161 of output series of scanning signals to this display panels 160.
This data drive circuit 140 receives this first or second reversal of poles control signal and data-signal; It converts this data-signal into a plurality of gray scale voltages according to this first or second reversal of poles control signal; And under the control of this clock signal, should bar data line 163 at the most be provided a plurality of gray scale voltages in regular turn.
When this data drive circuit 140 receive be this first polarity control signal the time; When a plurality of pixels 165 of this display panels 160 show this two field picture; In the capable pixel 165 of m of the black picture of corresponding said continuous demonstration, the polarity of pixel 165 that is positioned at same row is identical.Preferably, a plurality of pixels 165 of this display panels 160 show this two field picture with the mode of row counter-rotating.
When this data drive circuit 140 receive be this second polarity control signal the time, a plurality of pixels 165 of this display panels 160 add the counter-rotating of two lines, single line counter-rotating or two-wire inversion mode with a counter-rotating, a line and show this two field picture.Preferably, a plurality of pixels of this display panels 160 show this two field picture with the mode that a line adds the counter-rotating of two lines.
Compared with prior art, in the liquid crystal indicator 100 of the present invention, the view data of each frame is analyzed through this data analysis module 120; In the capable pixel 165 of n of the continuous demonstration of a frame image data; When the capable pixel 165 of the m that shows continuously shows black picture, n >=4 wherein, n＞m >=2; M and n are natural number, and these data analysis module 120 these first reversal of poles of output control signal to this data drive circuit 140.This data drive circuit 140 is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels 160; When making a plurality of pixels 165 of this display panels 160 show these two field pictures; That should show continuously and show in the capable pixel 165 of m of black picture, the polarity of all pixels 165 that is positioned at same row is identical.Thus; The capable pixel 165 of m that is positioned at the black picture of this demonstration of same row does not exist polarity to switch; Therefore when the capable pixel 165 of this m shows; Change in voltage on this column data line 163 is less, and then the less difficult generation of the charging and discharging currents instantaneous variation of the ceramic condenser on the printed circuit board (PCB) expands and shrink, thereby the phenomenon that corresponding printed circuit board (PCB) produces audible noise is enhanced.
Further; This data analysis module 120 adopts this tandom number generator 122 that the pixel 165 of each row is optionally analyzed; Can practice thrift the time and the step of some data processing accordingly, make that the structure of this data analysis module 120 is simple relatively, cost is lower.
See also Fig. 6, it is the circuit block diagram of data analysis module second embodiment of the present invention's liquid crystal indicator shown in Figure 1 100.The key distinction of the data analysis module 120 of this data analysis module 220 and first embodiment is: its decision circuitry 223 comprises a data comparator 226, a counter 227 and a data control circuit 228.This data comparator 226 receives each frame image data of storage in this buffer 221, and each data of each frame image data are analyzed, and whether belongs to the black picture data of delegation to confirm each row pixel data.This counter 227 writes down the analysis result of these data processors, and analysis result is provided to this data control circuit 228.This data control circuit 228 is judged according to this analysis result; When having the situation of " in the capable pixel of the n of the continuous demonstration of a frame image data; when the capable pixel of the m that shows continuously shows black picture; n >=4 wherein, n＞m >=2 ", this reversal of poles control circuit 225 these first reversal of poles control signals of output of these data control circuit 228 controls; Otherwise, these reversal of poles control circuit 225 these second reversal of poles control signals of output output of these data control circuit 228 controls.
Particularly, when this data comparator 226 was analyzed one-row pixels data, if the one-row pixels data have seven ten at least percent data to belong to black picture data, then this data comparator 226 judged that these row pixels belong to the pixel that shows black picture.
Compare with first embodiment; Adopt the liquid crystal indicator of above-mentioned data analysis module 220; Because this data analysis module 220 is all analyzed each pixel data, and then the analysis result of this data analysis module 220 is more accurate relatively, fiduciary level is higher.
In addition; In a kind of change design of this second embodiment; This data comparator 226 can further be analyzed each row view data and whether belong to the white picture data of delegation; Particularly, the data line in this frame image data has seven ten at least percent data to belong to white picture data, and then this row pixel belongs to the pixel that shows white picture.And; In the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows black picture, and the pixel that has at least two row to show continuously in the capable pixel of other n-m shows white picture, these reversal of poles control circuit 225 these first reversal of poles control signals of output output of these data control circuit 228 controls; Otherwise, these reversal of poles control circuit 225 these second reversal of poles control signals of output output of these data control circuit 228 controls.
The present invention also provides a kind of driving method of liquid crystal indicator of the audible noise that can improve, and sees also Fig. 7, and it is the process flow diagram of the driving method of liquid crystal indicator 100 shown in Figure 1.This driving method comprises the steps:
One, receives view data;
Particularly, in this step, this view data is unit with the frame, promptly can receive a frame image data of Low Voltage Differential Signal connector output;
Two, analyze this view data; In the arbitrarily continuous capable pixel of n of the two field picture that this liquid crystal indicator desire shows; There is the capable pixel of continuous m to show black picture, n >=4 wherein, m >=2 o'clock; When controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
Particularly, in this step, judge this frame image data, if whether arbitrarily continuously in the capable pixel of n of the two field picture that this liquid crystal indicator desire shows has the capable pixel of continuous m to show black picture, n >=4 wherein, m >=2, m and n are natural number;
When above-mentioned judged result for being, when then controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
When above-mentioned judged result for not, then control this two field picture and show with the mode that a counter-rotating, a line add the counter-rotating of two lines, single line counter-rotating or two-wire counter-rotating.
Further; In one embodiment; When analyzing this view data, have only in the capable pixel of n of the continuous demonstration of a frame image data, the capable pixel of the m that shows continuously shows when black picture and the capable pixel of other n-m show white picture; When just controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
In a kind of change embodiment; When analyzing this view data; Have only in the capable pixel of n of the continuous demonstration of a frame image data, the capable pixel of the m that shows continuously shows black picture, and the pixel that has at least two row to show continuously in the capable pixel of other n-m shows white picture; When just controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
Particularly; The situation of aforesaid " when controlling the capable pixel that shows black picture of this continuous m and showing; the polarity that is positioned at same row pixel is not reversed " comprises when control makes a plurality of pixels of this liquid crystal indicator show this two field picture; The polarity of all pixels that is positioned at same row is identical, as: make a plurality of pixels of this display panels show this two field picture with the mode of row counter-rotating or frame counter-rotating.
Claims (24)
1. liquid crystal indicator, it comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels, this display panels comprises a plurality of pixels; This sequential control circuit comprises a sequential control module; This time-sequence control module receives each frame image data, and produces clock signal and data-signal according to this view data, and exports this clock signal to this data drive circuit and scan drive circuit with the Control work sequential; And export data-signal to this data drive circuit; A plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels is characterized in that with display image: this sequential control circuit also comprises a data analysis module, and this data analysis module is used for receiving and analyzing each frame image data; In the capable pixel of n of the continuous demonstration of a frame image data; When the capable pixel of the m that shows continuously shows black picture, n >=4 wherein, n＞m >=2; M and n are natural number; This data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit, and this data drive circuit is handled this data-signal according to this first reversal of poles control signal and produced a plurality of gray scale voltages and provide to this display panels, when making a plurality of pixels of this display panels show this two field picture; That should show continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.
2. liquid crystal indicator as claimed in claim 1; It is characterized in that: this data drive circuit is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels; When making a plurality of pixels of this display panels show this two field picture, the polarity of all pixels that is positioned at same row is identical.
3. liquid crystal indicator as claimed in claim 2; It is characterized in that: this data drive circuit is handled this data-signal according to this first reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels, makes a plurality of pixels of this display panels show this two field picture with the mode of row counter-rotating or frame counter-rotating.
4. liquid crystal indicator as claimed in claim 1; It is characterized in that: this data analysis module comprises a buffer, a decision circuitry and a reversal of poles control circuit; This buffer is used for receiving in regular turn and temporary this each frame image data; This decision circuitry is used for reading each frame image data that this buffer is stored, and this each frame image data is analyzed, in the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows when deceiving picture that it controls this this first reversal of poles control signal of reversal of poles control circuit output.
5. liquid crystal indicator as claimed in claim 4; It is characterized in that: this decision circuitry comprises a tandom number generator, a data control circuit; This tandom number generator produces many group random numbers in regular turn and provides these many group random numbers to this data control circuit; Comprise k addressing address in every group of random number, the data of k pixel in the corresponding one-row pixels are distinguished in this k addressing address, and this data control circuit is according to the data that read k pixel in the one-row pixels in this k the frame image data of addressing address from this buffer; And analyze each data of this k pixel; Capable to judge whether this row pixel belongs to black picture pixel, this data control circuit further reaches total number of lines of pixels and counts said black picture pixel is capable, when there being said n >=4; During the situation of n＞m >=2, this this first reversal of poles control signal of reversal of poles control circuit output of this data control circuit control.
6. liquid crystal indicator as claimed in claim 5; It is characterized in that: when this data control circuit is analyzed each data of this k pixel; If the data of this k pixel all belong to black picture data, then this data control circuit judges that this row pixel belongs to the pixel that shows black picture.
7. liquid crystal indicator as claimed in claim 6; It is characterized in that: it is capable to judge also whether this row pixel belongs to white picture pixel during each data of this k of this data control circuit analysis pixel; In the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows black picture, and the pixel that has at least two row to show continuously in the capable pixel of other n-m shows white picture, this this first reversal of poles control signal of reversal of poles control circuit output of this data control circuit control.
8. liquid crystal indicator as claimed in claim 7; It is characterized in that: when this data control circuit is analyzed each data of this k pixel; If the data of this k pixel all belong to white picture data, then this data control circuit judges that this row pixel belongs to the pixel that shows white picture.
9. liquid crystal indicator as claimed in claim 4; It is characterized in that: this decision circuitry comprises a data comparator, a counter and a data control circuit; This data comparator receives each frame image data of storing in this buffer, and each data of each frame image data are analyzed, and the data line in this frame image data has seven ten at least percent data to belong to black picture data; Then this data comparator judges that this row pixel belongs to the pixel that shows black picture; This counter is used to write down the analysis result of this data processor, and analysis result is provided to this data control circuit, and this data control circuit judges that according to this analysis result this n and m meet n >=4; During the situation of n＞m >=2, this this first reversal of poles control signal of reversal of poles control circuit output output of this data control circuit control.
10. liquid crystal indicator as claimed in claim 9; It is characterized in that: this data comparator is further analyzed each data of each frame image data; Data line in this frame image data has seven ten at least percent data to belong to white picture data; Then this row pixel belongs to the pixel that shows white picture, and in the capable pixel of n of the continuous demonstration of a frame image data, the capable pixel of the m that shows continuously shows black picture; The pixel that has at least two row to show continuously in the capable pixel of other n-m shows white picture, this this first reversal of poles control signal of reversal of poles control circuit output output of this data control circuit control.
11. like claim 7 or 10 described liquid crystal indicators, it is characterized in that: this black picture data is the data that GTG is lower than one first predetermined GTG, and this white picture data is the data that GTG is higher than one second predetermined GTG.
12. liquid crystal indicator as claimed in claim 11 is characterized in that: this first predetermined GTG is 32, and this second predetermined GTG is 200.
13. liquid crystal indicator as claimed in claim 1; It is characterized in that: when this data analysis module is analyzed a frame image data; When this frame image data did not meet the situation of above-mentioned " in the capable pixel of n that shows continuously; the capable pixel of the m that shows continuously shows black picture; n >=4 wherein, n＞m >=2 ", this data analysis module was exported one second reversal of poles and is controlled signal to this data drive circuit; This data drive circuit is handled this data-signal according to this second reversal of poles control signal and is produced a plurality of gray scale voltages and provide to this display panels, makes a plurality of pixels of this display panels add the counter-rotating of two lines, single line counter-rotating or two-wire counter-rotating with a counter-rotating, a line and shows this two field picture.
14. a liquid crystal indicator, it comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels, and this display panels comprises a plurality of pixels; This sequential control circuit comprises a sequential control module; This time-sequence control module receives each frame image data, and produces clock signal and data-signal according to this view data, and exports this clock signal to this data drive circuit and scan drive circuit with the Control work sequential; And export data-signal to this data drive circuit; A plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels is characterized in that with display image: this sequential control circuit also comprises a data analysis module, and this data analysis module is used for receiving and analyzing each frame image data; In the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows when black picture and the capable pixel of other n-m show white picture, n >=4 wherein, n＞m >=2; M and n are natural number; This data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit, and this data drive circuit is handled this data-signal according to this first reversal of poles control signal and produced a plurality of gray scale voltages and provide to this display panels, when making a plurality of pixels of this display panels show this two field picture; That should show continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.
15. a liquid crystal indicator, it comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels, and this display panels comprises a plurality of pixels; This sequential control circuit comprises a sequential control module; This time-sequence control module receives each frame image data, and produces clock signal and data-signal according to this view data, and exports this clock signal to this data drive circuit and scan drive circuit with the Control work sequential; And export data-signal to this data drive circuit; A plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels is characterized in that with display image: this sequential control circuit also comprises a data analysis module, and this data analysis module is used for receiving and analyzing each frame image data; In the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows when the pixel that has at least two row to show continuously in black picture and the capable pixel of other n-m shows white picture, n >=4 wherein, n＞m >=2; M and n are natural number; This data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit, and this data drive circuit is handled this data-signal according to this first reversal of poles control signal and produced a plurality of gray scale voltages and provide to this display panels, when making a plurality of pixels of this display panels show this two field picture; That should show continuously and show in the capable pixel of m of black picture, the polarity of all pixels that is positioned at same row is identical.
16. liquid crystal indicator; It comprises a sequential control circuit, scan driving circuit, a data drive circuit and a display panels, and this display panels comprises a plurality of pixels, and this sequential control circuit comprises a sequential control module; This time-sequence control module receives each frame image data; And produce clock signal and data-signal according to this view data, and export this clock signal to this data drive circuit and scan drive circuit with the Control work sequential, and export data-signal to this data drive circuit; A plurality of pixels that this data drive circuit and scan drive circuit are used to drive this display panels are with display image; It is characterized in that: this sequential control circuit also comprises a data analysis module, and this data analysis module is used for receiving and analyzing each frame image data, in the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows when deceiving picture; And the pixels that have at least two row to show continuously in the capable pixel of other n-m show white picture, n >=4 wherein, n＞m >=2; M and n are natural number; This data analysis module is exported one first reversal of poles and is controlled signal to this data drive circuit, and this data drive circuit is handled this data-signal according to this first reversal of poles control signal and produced a plurality of gray scale voltages and provide to this display panels, makes a plurality of pixels of this display panels show this two field picture with the mode of row counter-rotating.
17. the driving method of a liquid crystal indicator, this driving method comprises the steps:
A. receive view data;
B. analyze this view data, in the arbitrarily continuous capable pixel of n of the two field picture that this liquid crystal indicator desire shows, have the capable pixel of continuous m to show black picture; N >=4 wherein; M >=2, m and n are natural number, the time; When then controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
18. the driving method of liquid crystal indicator as claimed in claim 17 is characterized in that: among this step a, this view data is unit with the frame, promptly receives a frame image data of Low Voltage Differential Signal connector output.
19. the driving method of liquid crystal indicator as claimed in claim 17; It is characterized in that: among this step b; Analyze this view data and comprise and judge arbitrarily continuously in the capable pixel of n of a two field picture that this liquid crystal indicator desire shows whether have the capable pixel of continuous m to show the step of black picture.
20. the driving method of liquid crystal indicator as claimed in claim 19 is characterized in that: when judged result for being, when then controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed; When judged result for not, then control this two field picture and show with the mode that a counter-rotating, a line add the counter-rotating of two lines, single line counter-rotating or two-wire counter-rotating.
21. the driving method of liquid crystal indicator as claimed in claim 19 is characterized in that: when judged result for being, when a plurality of pixels of then controlling this display panels showed this two field picture, the polarity of all pixels that is positioned at same row was identical; When judged result for not, then control this two field picture and show with the mode that a counter-rotating, a line add the counter-rotating of two lines, single line counter-rotating or two-wire counter-rotating.
22. the driving method of liquid crystal indicator as claimed in claim 19 is characterized in that: when judged result for being, then control this display panels and show this two field picture with the mode of row counter-rotating or frame counter-rotating; When judged result for not, then control this two field picture and show this two field picture with the mode that a counter-rotating, a line add the counter-rotating of two lines, single line counter-rotating or two-wire counter-rotating.
23. the driving method of liquid crystal indicator as claimed in claim 17; It is characterized in that: when analyzing this view data; In the capable pixel of n of the continuous demonstration of a frame image data; The capable pixel of the m that shows continuously shows when black picture and the capable pixel of other n-m show white picture, controls just that this continuous m is capable to show that the polarity that is positioned at same row pixel was not reversed when the pixel of deceiving picture showed.
24. the driving method of liquid crystal indicator as claimed in claim 17; It is characterized in that: when analyzing this view data; In the capable pixel of n of the continuous demonstration of a frame image data, the capable pixel of the m that shows continuously shows black picture, and the pixel that has at least two row to show continuously in the capable pixel of other n-m shows white picture; When just controlling the capable pixel that shows black picture of this continuous m and showing, the polarity that is positioned at same row pixel is not reversed.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208249A (en) * | 2012-06-22 | 2013-07-17 | 明基电通有限公司 | Display and method for display pixel on display apparatus |
| CN104766588A (en) * | 2015-05-08 | 2015-07-08 | 京东方科技集团股份有限公司 | Driving method of display panel and display device |
| CN105321482A (en) * | 2014-06-03 | 2016-02-10 | 株式会社日本显示器 | Display device |
| CN105448223A (en) * | 2015-12-30 | 2016-03-30 | 荆溪瑞 | Display control circuit and display device |
| CN105654917A (en) * | 2016-04-08 | 2016-06-08 | 京东方科技集团股份有限公司 | Polarity reversal driving method, data driver and liquid crystal display panel |
| CN108573669A (en) * | 2017-03-08 | 2018-09-25 | 精工爱普生株式会社 | Display device and electronic equipment |
| CN109859715A (en) * | 2019-04-08 | 2019-06-07 | 惠科股份有限公司 | Display driving method and liquid crystal display device |
| CN111326120A (en) * | 2020-04-08 | 2020-06-23 | Tcl华星光电技术有限公司 | Local backlight dimming circuit and dimming method and liquid crystal display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063669A1 (en) * | 2000-10-06 | 2002-05-30 | Toshihiro Yanagi | Active matrix liquid crystal display and method of driving the same |
| US20030151584A1 (en) * | 2001-12-19 | 2003-08-14 | Song Hong Sung | Liquid crystal display |
| CN1758316A (en) * | 2004-10-08 | 2006-04-12 | 中华映管股份有限公司 | Driving method |
| CN101105585A (en) * | 2006-07-12 | 2008-01-16 | 三星电子株式会社 | Display device and method of driving thereof |
-
2010
- 2010-08-12 CN CN201010251927.4A patent/CN102376279B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020063669A1 (en) * | 2000-10-06 | 2002-05-30 | Toshihiro Yanagi | Active matrix liquid crystal display and method of driving the same |
| US20030151584A1 (en) * | 2001-12-19 | 2003-08-14 | Song Hong Sung | Liquid crystal display |
| CN1758316A (en) * | 2004-10-08 | 2006-04-12 | 中华映管股份有限公司 | Driving method |
| CN101105585A (en) * | 2006-07-12 | 2008-01-16 | 三星电子株式会社 | Display device and method of driving thereof |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208249B (en) * | 2012-06-22 | 2016-03-02 | 明基电通有限公司 | Display and in display device the method for display pixel |
| CN103208249A (en) * | 2012-06-22 | 2013-07-17 | 明基电通有限公司 | Display and method for display pixel on display apparatus |
| US10019961B2 (en) | 2014-06-03 | 2018-07-10 | Japan Display Inc. | Display device |
| CN105321482A (en) * | 2014-06-03 | 2016-02-10 | 株式会社日本显示器 | Display device |
| CN104766588A (en) * | 2015-05-08 | 2015-07-08 | 京东方科技集团股份有限公司 | Driving method of display panel and display device |
| CN105448223A (en) * | 2015-12-30 | 2016-03-30 | 荆溪瑞 | Display control circuit and display device |
| CN105448223B (en) * | 2015-12-30 | 2018-06-12 | 荆溪瑞 | A kind of display control circuit and display device |
| CN105654917B (en) * | 2016-04-08 | 2018-03-30 | 京东方科技集团股份有限公司 | Polarity reversal driving method, data driver and liquid crystal panel |
| CN105654917A (en) * | 2016-04-08 | 2016-06-08 | 京东方科技集团股份有限公司 | Polarity reversal driving method, data driver and liquid crystal display panel |
| US10089943B2 (en) | 2016-04-08 | 2018-10-02 | Boe Technology Group Co., Ltd. | Liquid crystal display panel driving method, timing controller and liquid crystal display apparatus |
| CN108573669A (en) * | 2017-03-08 | 2018-09-25 | 精工爱普生株式会社 | Display device and electronic equipment |
| CN108573669B (en) * | 2017-03-08 | 2023-04-21 | 精工爱普生株式会社 | Display device and electronic apparatus |
| CN109859715A (en) * | 2019-04-08 | 2019-06-07 | 惠科股份有限公司 | Display driving method and liquid crystal display device |
| CN109859715B (en) * | 2019-04-08 | 2021-02-02 | 惠科股份有限公司 | Display driving method and liquid crystal display device |
| CN111326120A (en) * | 2020-04-08 | 2020-06-23 | Tcl华星光电技术有限公司 | Local backlight dimming circuit and dimming method and liquid crystal display device |
| CN111326120B (en) * | 2020-04-08 | 2021-08-24 | Tcl华星光电技术有限公司 | Local backlight dimming circuit and dimming method and liquid crystal display device |
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