CN104375346A - Liquid crystal display panel and driving method thereof - Google Patents
Liquid crystal display panel and driving method thereof Download PDFInfo
- Publication number
- CN104375346A CN104375346A CN201410710545.1A CN201410710545A CN104375346A CN 104375346 A CN104375346 A CN 104375346A CN 201410710545 A CN201410710545 A CN 201410710545A CN 104375346 A CN104375346 A CN 104375346A
- Authority
- CN
- China
- Prior art keywords
- pixel cell
- during
- brightness
- polarity
- data
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 35
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- QAHFOPIILNICLA-UHFFFAOYSA-N Diphenamid Chemical compound C=1C=CC=CC=1C(C(=O)N(C)C)C1=CC=CC=C1 QAHFOPIILNICLA-UHFFFAOYSA-N 0.000 description 3
- 101100443238 Caenorhabditis elegans dif-1 gene Proteins 0.000 description 2
- 240000001439 Opuntia Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
-
- 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
- G09G3/3614—Control of polarity reversal in general
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a liquid crystal display panel and a driving method thereof. Each of the pixel units is electrically connected to one of the scan lines and one of the data lines. One of the data lines is used for transmitting a positive polarity data signal to at least one corresponding pixel unit of the pixel units during a positive polarity driving period and transmitting a negative polarity data signal to the corresponding pixel unit during a negative polarity driving period, wherein the positive polarity driving period and the negative polarity driving period are different in time length. In addition, a driving method of the liquid crystal display panel is also disclosed. The invention can reduce the flicker of the image displayed on the liquid crystal panel caused by the brightness difference between the positive polarity driving period and the negative polarity driving period.
Description
Technical field
The invention relates to a kind of display panels, and relate to a kind of driving method of display panels especially.
Background technology
General liquid crystal display is in order to avoid liquid crystal capacitance polarization and avoid producing image residual effect, and the voltage being applied to liquid crystal capacitor two ends must reverse at set intervals.Reverse turn operation method for liquid crystal display comprises picture frame reversion (frame inversion), line reversion (line inversion), pixel cell reversion (pixel inversion) and some reversion (dot inversion) ... Deng.
Please refer to Fig. 1, Fig. 1 be illustrate when one know reverse turn operation method be applied on panel of LCD time, the brightness schematic diagram of a pixel cell on panel.Label 210 shown in Fig. 1 be represent in above-mentioned image time one positive polarity drive during, and label 220 be represent in above-mentioned image time one negative polarity drive during.
As shown in Figure 1, drive in period 210 in positive polarity, because positive polarity data voltage charges to liquid crystal capacitance, make the brightness of the above-mentioned pixel cell on liquid crystal panel rise to brightness B1.Subsequently, because liquid crystal capacitance discharges, the brightness of the above-mentioned pixel cell on liquid crystal panel is made to drop to brightness B2 by brightness B1.On the other hand, drive in period 220 in negative polarity, because negative polarity data voltage charges to liquid crystal capacitance, the brightness of the above-mentioned pixel cell on liquid crystal panel is made to rise to brightness B3, subsequently, because liquid crystal capacitance discharges, the brightness of the above-mentioned pixel cell on liquid crystal panel is made to drop to brightness B4 by brightness B3.In knowing in technology, the time span identical (time t1 as shown in Figure 1) during the time span during positive polarity drives drives with negative polarity.
But, due to the impact of flexoelectric effect (flexoelectric effect), drive period 210 in positive polarity and drive in period 220 in negative polarity, the anglec of rotation of liquid crystal can be variant, make to drive the brightness maxima B1 of above-mentioned pixel cell in period 210 in positive polarity and drive in negative polarity the brightness maxima B3 of above-mentioned pixel cell in period 220 different,, there is flicker by causing image shown on liquid crystal panel in difference in brightness like this.
In addition, when liquid crystal display uses a picture update rate show image more at a slow speed, because liquid crystal capacitance drives period 210 in positive polarity and drives the voltage retention (voltage holding ratio) in period 220 different in negative polarity, therefore the brightness B2 of above-mentioned pixel cell at the end of positive polarity drives period 210, at the end of driving period 220 from negative polarity, the brightness B3 of above-mentioned pixel cell is different, difference in brightness like this, can cause image shown on liquid crystal panel to occur flicker equally.
Summary of the invention
An aspect of of the present present invention is to provide a kind of display panels.Above-mentioned display panels comprises multi-strip scanning line, a plurality of data lines and multiple pixel cell.Above-mentioned data line and above-mentioned sweep trace interconnected.Above-mentioned pixel cell is arranged in a matrix.In above-mentioned pixel cell, each pixel cell is electrically connected the scan line in above-mentioned sweep trace and the data line in above-mentioned data line.At least one corresponding pixel cell in one first polarity data signal to above-mentioned pixel cell is transmitted during a respective data lines in above-mentioned data line is used to one first polarity driven.Transmit one second polarity data signal during above-mentioned respective data lines is used to one second polarity driven to above-mentioned respective pixel unit, wherein the time during above-mentioned first polarity driven and the time length during above-mentioned second polarity driven different.
Another aspect of the present invention is to provide a kind of display panels.Above-mentioned display panels comprises multi-strip scanning line, a plurality of data lines and multiple pixel cell.Above-mentioned data line and above-mentioned sweep trace interconnected.Above-mentioned pixel cell is arranged in a matrix.In above-mentioned pixel cell, each pixel cell is electrically connected the scan line in above-mentioned sweep trace and the data line in above-mentioned data line.At least one corresponding pixel cell in one first polarity data signal to above-mentioned pixel cell is transmitted during a respective data lines in above-mentioned data line is used to one first polarity driven.Transmit one second polarity data signal during above-mentioned respective data lines is used to one second polarity driven to above-mentioned respective pixel unit, at the end of wherein during above-mentioned first polarity driven above-mentioned respective pixel unit brightness and during this second polarity driven at the end of both the brightness difference of above-mentioned respective pixel unit be less than a numerical range.
Another aspect of the present invention is the driving method being to provide a kind of display panels, comprises the following step: utilize a data line to transmit one first polarity data signal to pixel cell during one first polarity driven; And utilize above-mentioned data line during one second polarity driven, to transmit one second polarity data signal to above-mentioned pixel cell, wherein during above-mentioned first polarity driven with above-mentioned second polarity driven during time length different.
Application the invention has the advantages that the time span during being driven by the time span during arranging different positive polarity and driving and negative polarity, at the end of making during positive polarity drives pixel cell brightness and during negative polarity drives at the end of the brightness of pixel cell equal or be less than a numerical range, with reduce image shown on liquid crystal panel due to during driving in positive polarity and negative polarity drive during the flicker that causes of luminance difference.
In addition, the present invention also by arranging the voltage difference between different positive polarity data-signals and common electric voltage and the voltage difference between negative polarity data-signal and common electric voltage, make the brightness maxima of pixel cell in during positive polarity drives and during driving in negative polarity in the brightness maxima of pixel cell equal or be less than a numerical range.Thus, the flicker that shown on liquid crystal panel image causes due to the difference of the brightness maxima of pixel cell in during driving in positive polarity and during negative polarity driving also can be effectively canceled.
Accompanying drawing explanation
Fig. 1 illustrates that one knows reverse turn operation method when being applied on panel of LCD, the brightness schematic diagram of a pixel cell on panel.
Fig. 2 is in one embodiment of the invention, a kind of schematic block diagram of display panels.
Fig. 3 A for according to one embodiment of the invention a pixel cell during a positive polarity drives and a negative polarity drive during in carry out the brightness schematic diagram that reverse turn operation presents.
Fig. 3 B be according to one embodiment of the invention be shown in during positive polarity drives and negative polarity drive during the signal waveforms that transmits.
Fig. 4 A be according to one embodiment of the invention a pixel cell during a positive polarity drives and a negative polarity drive during in carry out the brightness schematic diagram that reverse turn operation presents.
Fig. 4 B be according to one embodiment of the invention be shown in during positive polarity drives and negative polarity drive during the signal waveforms that transmits.
Fig. 5 is the schematic flow sheet of the driving method according to a kind of display panels shown in one embodiment of the invention.
Wherein, description of reference numerals is as follows:
100: display panels
110: sweep trace
120: data line
130: pixel cell
140: picture update rate detecting unit
145: signal of video signal
150: control module
153: data drive signal
155: scanning drive signal
160: data drive unit
170: scan drive cell
210,310,410: during positive polarity drives
220,320,420: during negative polarity drives
T1, t2, t3: time span
B1, B2, B3, B4, B5, B6, B7, B8: brightness
SCAN: sweep signal
DATA: data-signal
YCLK: frequency signal
YOE: time span control signal
DATA_P: positive polarity data-signal
DATA_N: negative polarity data-signal
Vcom: common electric voltage
V
dif1, V
dif2, V
dif3, V
dif4: voltage difference
502,504: step
Embodiment
Hereafter institute's accompanying drawings is coordinated to elaborate for embodiment, but the embodiment provided also is not used to limit the scope that contains of the present invention, and the description of structure operation is not used to limit its order performed, any structure reconfigured by assembly, produce the device with impartial effect, be all the scope that the present invention is contained.In addition, graphic only for the purpose of description, do not map according to life size.For making to be convenient to understand, in following explanation, same components illustrates with identical symbology.
The word (terms) used in full section instructions and claims, apart from especially indicate outside, usually have each word use in this area, this disclose content in the usual meaning in special content.Some in order to the word that describes this exposure by lower or discuss in the other places of this instructions, to provide those skilled in the art about guiding extra in the description of this exposure.
In addition, about " coupling " used herein or " connection ", all can refer to that two or more assembly directly makes entity or in electrical contact mutually, or mutually indirectly put into effect body or in electrical contact, also can refer to two or more assembly mutual operation or action.
In herein, unless be particularly limited to some extent for article in interior literary composition, otherwise " one " and " being somebody's turn to do " can be made a general reference single one or more.What will be further understood that is, " comprising " used herein, " comprising ", " having " and similar vocabulary, indicate the feature described in it, region, integer, step, operation, assembly and/or assembly, but do not get rid of one or more further feature described in it or extra, region, integer, step, operation, assembly, assembly, and/or group wherein.
Please refer to Fig. 2.Fig. 2 is in one embodiment of the invention, a kind of schematic block diagram of display panels 100.Display panels 100 comprises multi-strip scanning line 110, a plurality of data lines 120, and multiple pixel cell 130.Data line 120 is interconnected with sweep trace 110.As shown in Figure 2, pixel cell 130 is arranged in a matrix, and in pixel cell 130, each pixel cell is electrically connected the scan line in sweep trace 110 and the data line in data line 120.
In an embodiment, display panels 100 also optionally comprises picture update rate detecting unit 140, control module 150, multiple data drive unit 160 and multiple scan drive cell 170.Picture update rate detecting unit 140 is in order to export a signal of video signal 145 according at least one signal (not shown).Signal of video signal 145 can be the signal of video signal (such as: the signal of video signal that tool picture update rate is 60 hertz) that has high speed picture turnover rate, or the signal of video signal (such as: the signal of video signal that tool picture update rate is 1 hertz) that has a low speed picture update rate.Control module 150 in order to export at least one data drive signal 153 to data drive unit 160 according to signal of video signal 145, and exports at least one scan drive singal 155 to scan drive cell 170.Data drive unit 160 is in order to export corresponding data-signal DATA to data line 120 according to data drive signal 153, and scan drive cell 170 is in order to export corresponding sweep signal SCAN to sweep trace 110 according to scanning drive signal 155.
In an embodiment, control module 150 is in order to contain the scanning drive signal 155 of frequency signal YCLK and time span control signal YOE according to signal of video signal 145 output packet.And scan drive cell 170 is in order to export sweep signal SCAN to above-mentioned corresponding sweep trace 110 according to frequency signal YCLK and time span control signal YOE.
In another embodiment, a respective data lines 120 in above-mentioned data line 120 is used to transmit a positive polarity data-signal at least one corresponding pixel cell 130 in above-mentioned pixel cell 130 during a positive polarity drives, and above-mentioned respective data lines 120 be used to transmit during a negative polarity drives a negative polarity data-signal to above-mentioned at least one pair of answer pixel cell 130.Length between time during time during above-mentioned positive polarity drives and above-mentioned negative polarity drive is different, described in specific as follows.
Please refer to Fig. 3 A.Fig. 3 A is the brightness schematic diagram that pixel cell 130 as shown in Figure 2 drives period 310 and negative polarity to drive in period 320 to carry out reverse turn operation and present in positive polarity according to one embodiment of the invention.
As shown in Figure 3A, in the present embodiment, positive polarity drives the time span t2 of period 310 and negative polarity to drive the time span t3 of period 320 different.In an embodiment, time span t2 drives the brightness of the pixel cell 130 at the end of period 310 to determine by positive polarity, and time span t3 drives the brightness of the pixel cell 130 at the end of period 320 to determine by negative polarity.Specifically, period 310 is driven in positive polarity, the brightness of pixel cell 130 rises to brightness B5, subsequently, because the transistor in pixel cell can discharge along with the time, make the brightness of pixel cell 130 drop to the brightness B6 of setting by brightness B5, now positive polarity drives period 310 to terminate through setting, and namely time span t2 is determined.Similarly, period 320 is driven in negative polarity, the brightness of pixel cell 130 rises to brightness B7, subsequently, because the transistor in pixel cell can discharge along with the time, make the brightness of pixel cell 130 drop to the brightness B6 of setting by brightness B7, now negative polarity drives period 320 to terminate through setting, and namely time span t3 is determined.
In an embodiment, positive polarity drives the time span t2 of period 310 and negative polarity to drive the time span t3 of period 320 to be set up, and makes the difference of the brightness of pixel cell 130 at the end of positive polarity drives period 310 and the brightness of pixel cell 130 at the end of negative polarity drives period 320 be less than a numerical range.Above-mentioned numerical range can be but is not limited to 20%, 10%, 3% or 1%.
In another embodiment, positive polarity drives time span t2 and the negative polarity of period 310 to drive the time span t3 of period 320 to be set up, and makes brightness and the brightness equal (brightness B6 as shown in fig. 3) of pixel cell 130 at the end of negative polarity driving period 320 of pixel cell 130 at the end of positive polarity driving period 310.
Referring to Fig. 3 B.Fig. 3 B be according to one embodiment of the invention be shown in the signal waveforms that positive polarity shown in Fig. 3 A drives period 310 and negative polarity to drive period 320 to transmit.As shown in fig. 2 and fig. 3b, sweep signal SCAN can be determined by frequency signal YCLK and time span control signal YOE, wherein frequency signal YCLK is in order to determine the rising front of the waveform of sweep signal SCAN, and time span control signal YOE in order to determine sweep signal SCAN activation during (as shown in Figure 3 B during sweep signal SCAN tool high level).
As shown in Figure 3 B, in an embodiment, drive in period 310 in positive polarity, data-signal DATA comprises a positive polarity data-signal DATA_P, wherein when sweep signal SCAN is positioned at high level, the liquid crystal capacitance of pixel cell 130 charges according to positive polarity data-signal DATA_P, makes the brightness of pixel cell 130 rise to brightness B5 as shown in Figure 3A.And when sweep signal SCAN is converted to low level by high level, the transistor in pixel cell 130 can discharge along with the time, make the brightness of pixel cell 130 start to decline, and at the end of positive polarity drives period 310, drop to brightness B6 as shown in Figure 3A.
In another embodiment, drive in period 320 in negative polarity, data-signal DATA comprises a negative polarity data-signal DATA_N, wherein when sweep signal SCAN is positioned at high level, the liquid crystal capacitance of pixel cell 130 charges according to negative polarity data-signal DATA_N, makes the brightness of pixel cell 130 rise to brightness B7 as shown in Figure 3A.And when sweep signal SCAN is converted to low level by high level, the transistor in pixel cell 130 can discharge along with the time, make the brightness of pixel cell 130 start to decline, and at the end of negative polarity drives period 320, drop to brightness B6 as shown in Figure 3A.
In above-described embodiment, driving time span t2 and the negative polarity of period 310 to drive the time span t3 of period 320 by arranging positive polarity, making the brightness of pixel cell 130 at the end of positive polarity drives period 310 and the brightness equal (brightness B6 as shown in fig. 3) of pixel cell 130 effectively can reduce the flicker that image shown on liquid crystal panel causes due to the luminance difference during positive polarity driving and during negative polarity driving at the end of negative polarity drives period 320.
In the embodiment shown in Fig. 3 B, period 310 and negative polarity is driven to drive in period 320 in positive polarity, the voltage representated by positive polarity data-signal DATA_P and the voltage difference V between common electric voltage Vcom
dif1, haply can and the voltage representated by negative polarity data-signal DATA_N and the voltage difference V between common electric voltage Vcom
dif2identical.
Referring to Fig. 4 A and Fig. 4 B.Fig. 4 A is the brightness schematic diagram that pixel cell 130 as shown in Figure 2 drives period 410 and a negative polarity to drive in period 420 to carry out reverse turn operation and present in a positive polarity according to another embodiment of the present invention.Fig. 4 B is that the sweep trace corresponding to pixel cell 130 as shown in Figure 2 and data line correspond to the signal waveforms that the positive polarity shown in Fig. 4 A drives period 410 and negative polarity to drive period 420 to transmit according to one embodiment of the invention.
Compared to the embodiment shown in Fig. 3 A and Fig. 3 B, in the present embodiment, drive the voltage in period 410 representated by positive polarity data-signal DATA_P and the voltage difference (V as shown in Figure 4 B between common electric voltage Vcom by being arranged at positive polarity
dif3), and be arranged at the voltage representated by negative polarity data-signal DATA_N and the voltage difference (V as shown in Figure 4 B between common electric voltage Vcom in negative polarity driving period 420
dif4), make positive polarity drive the brightness maxima of pixel cell 130 in period 410 to drive the brightness maxima of pixel cell 130 in period 420 identical (brightness B8 as shown in Figure 4 A) with negative polarity.Thus, just can avoid causing the anglec of rotation of liquid crystal can be variant in flexoelectric effect (flexoelectric effect) is during positive polarity drives and during negative polarity drives, so that when positive polarity data voltage is identical with the voltage difference between common electric voltage and the voltage difference between negative polarity data voltage and common electric voltage, cause positive polarity to drive during in pixel cell brightness maxima with drive in negative polarity during in the different and image shown by causing on liquid crystal panel of the brightness maxima of pixel cell there is the problem of glimmering.Thus, the flicker that shown on liquid crystal panel image causes due to the difference of the brightness maxima of pixel cell 130 within positive polarity driving period 410 and in negative polarity driving period 420 can be effectively canceled.
In an embodiment, by the value of adjustment common electric voltage Vcom, voltage difference V can be made
dif3with V
dif4have different values, to make to drive in period 410 in positive polarity, the liquid crystal capacitance of pixel cell 130 is by voltage difference V
dif3when charging, the brightness maxima of pixel cell 130 with drive in period 420 in negative polarity, the liquid crystal capacitance of pixel cell 130 is by voltage difference V
dif4when charging, the brightness maxima of pixel cell 130 is equal (brightness B8 as shown in Figure 4 A).
In another embodiment, by the value of adjustment common electric voltage Vcom, voltage difference V can be made
dif3with V
dif4have different values, to make to drive in period 410 in positive polarity, the liquid crystal capacitance of pixel cell 130 is by voltage difference V
dif3when charging, the brightness maxima of pixel cell 130 with drive in period 420 in negative polarity, the liquid crystal capacitance of pixel cell 130 is by voltage difference V
dif4when charging, the difference between the brightness maxima of pixel cell 130 is less than a numerical range.Above-mentioned numerical range can be but is not limited to 20%.
In the embodiment shown in Fig. 4 A and Fig. 4 B, by arranging the voltage representated by different positive polarity data-signal DATA_P and the voltage difference V between common electric voltage Vcom
dif3and the voltage representated by negative polarity data-signal DATA_N and the voltage difference V between common electric voltage Vcom
dif4, make positive polarity drive the brightness maxima of pixel cell 130 in period 410 equal with driving the brightness maxima of pixel cell 130 in period 420 in negative polarity or be less than a numerical range.
Fig. 5 is the schematic flow sheet of the driving method according to a kind of display panels shown in one embodiment of the invention.The driving method of this display panels can be applicable in display panels 100 as shown in Figure 2, but is not limited with it.For convenience of and for the purpose of clearly demonstrating, the describing of driving method of following display panels coordinates the display panels 100 shown in Fig. 2 to explain.
In step 502, a data line is utilized to transmit a positive polarity data-signal to pixel cell 130 during a positive polarity drives.
In step 504, utilize above-mentioned data line to transmit a negative polarity data-signal to pixel cell 130 during a negative polarity drives, the time length during wherein driving with above-mentioned negative polarity during above-mentioned positive polarity driving is different.
In an embodiment, in time performing above-mentioned steps 502 and step 504, at the end of during positive polarity drives pixel cell 130 brightness and during negative polarity drives at the end of both the brightness difference of pixel cell 130 be less than a numerical range, wherein this numerical range can be but is not limited to 20%, 10%, 3% or 1%.
In another embodiment, in time performing above-mentioned steps 502 and step 504, in during positive polarity drives pixel cell 130 brightness maxima and during negative polarity drives in both brightness maxima difference of pixel cell 130 be less than a numerical range.
Should be appreciated that, step mentioned in the present embodiment, except chatting its order bright especially, all can adjust its tandem according to actual needs, even can perform simultaneously or partly simultaneously.
In addition, should be noted that, compared in above-described embodiment, time span during being driven by the time span during arranging different positive polarity and driving and negative polarity, at the end of making during positive polarity drives pixel cell brightness and during negative polarity drives at the end of the brightness of pixel cell equal or be less than a numerical range, in another embodiment of the present invention, also by arranging positive polarity data-signal and the negative polarity data-signal with different frequency, at the end of making during positive polarity drives pixel cell brightness and during negative polarity drives at the end of the brightness of pixel cell equal or be less than above-mentioned numerical range.
In sum, time span during the present invention is driven by the time span during arranging different positive polarity and driving and negative polarity, at the end of making during positive polarity drives pixel cell brightness and during negative polarity drives at the end of the brightness of pixel cell equal or be less than a numerical range, with reduce image shown on liquid crystal panel due to during driving in positive polarity and negative polarity drive during the flicker that causes of luminance difference.
In addition, the present invention also by arranging the voltage difference between different positive polarity data-signals and common electric voltage and the voltage difference between negative polarity data-signal and common electric voltage, make the brightness maxima of pixel cell in during positive polarity drives and during driving in negative polarity in the brightness maxima of pixel cell equal or be less than a numerical range.Thus, the flicker that shown on liquid crystal panel image causes due to the difference of the brightness maxima of pixel cell in during driving in positive polarity and during negative polarity driving also can be effectively canceled.
Although this disclosure discloses as above with embodiment; so itself and be not used to limit this disclosure; any those skilled in the art; not departing from the spirit and scope of this disclosure; when being used for a variety of modifications and variations, therefore the protection domain of this disclosure is as the criterion when defining depending on accompanying claim.
Claims (9)
1. a display panels, comprises:
Multi-strip scanning line;
A plurality of data lines, interconnected with this multi-strip scanning line; And
Multiple pixel cell, the plurality of pixel cell is arranged in a matrix, and in the plurality of pixel cell, each pixel cell is electrically connected the scan line in this multi-strip scanning line and the data line in this plurality of data lines;
At least one corresponding pixel cell in one first polarity data signal to the plurality of pixel cell is transmitted during a respective data lines wherein in this plurality of data lines is used to one first polarity driven, and this respective data lines be used to one second polarity driven during transmit one second polarity data signal to this at least one corresponding pixel cell, wherein during this first polarity driven with this second polarity driven during time length different.
2. display panels as claimed in claim 1, at the end of wherein during this first polarity driven this at least one corresponding pixel cell brightness and during this second polarity driven at the end of both the brightness difference of this at least one corresponding pixel cell be less than a numerical range.
3. display panels as claimed in claim 1, at the end of wherein during this first polarity driven this at least one corresponding pixel cell brightness and during this second polarity driven at the end of both the brightness difference of this at least one corresponding pixel cell be less than 3%.
4. display panels as claimed in claim 1, in wherein during this first polarity driven this at least one corresponding pixel cell brightness maxima and during this second polarity driven in both brightness maxima difference of this at least one corresponding pixel cell be less than a numerical range.
5. a display panels, comprises:
Multi-strip scanning line;
A plurality of data lines, interconnected with this multi-strip scanning line; And
Multiple pixel cell, the plurality of pixel cell is arranged in a matrix, and in the plurality of pixel cell, each pixel cell is electrically connected the scan line in this multi-strip scanning line and the data line in this plurality of data lines;
At least one corresponding pixel cell in one first polarity data signal to the plurality of pixel cell is transmitted during a respective data lines wherein in this plurality of data lines is used to one first polarity driven, and this respective data lines transmits one second polarity data signal to this at least one corresponding pixel cell during being used to one second polarity driven, at the end of wherein during this first polarity driven this at least one corresponding pixel cell brightness and during this second polarity driven at the end of both the brightness difference of this at least one corresponding pixel cell be less than a numerical range.
6. display panels as claimed in claim 5, in wherein during this first polarity driven this at least one corresponding pixel cell brightness maxima and during this second polarity driven in both brightness maxima difference of this at least one corresponding pixel cell be less than a numerical range.
7. a driving method for display panels, comprises:
A data line is utilized to transmit one first polarity data signal to pixel cell during one first polarity driven; And
Utilize this data line during one second polarity driven, to transmit one second polarity data signal to this pixel cell, wherein during this first polarity driven with this second polarity driven during time length different.
8. the driving method of display panels as claimed in claim 7, at the end of wherein during this first polarity driven this pixel cell brightness and during this second polarity driven at the end of both the brightness difference of this pixel cell be less than a numerical range.
9. the driving method of display panels as claimed in claim 7, in wherein during this first polarity driven this pixel cell brightness maxima and during this second polarity driven in both brightness maxima difference of this pixel cell be less than a numerical range.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103133580 | 2014-09-26 | ||
| TW103133580A TWI547932B (en) | 2014-09-26 | 2014-09-26 | Liquid crystal display and driving method for liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104375346A true CN104375346A (en) | 2015-02-25 |
| CN104375346B CN104375346B (en) | 2017-06-13 |
Family
ID=52554364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410710545.1A Active CN104375346B (en) | 2014-09-26 | 2014-11-28 | Liquid crystal display panel and driving method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104375346B (en) |
| TW (1) | TWI547932B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106297693A (en) * | 2016-08-26 | 2017-01-04 | 深圳市华星光电技术有限公司 | Liquid Crystal Display And Method For Driving |
| JP2017009987A (en) * | 2015-06-25 | 2017-01-12 | 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． | Display device |
| WO2017041318A1 (en) * | 2015-09-09 | 2017-03-16 | 深圳市华星光电技术有限公司 | Driving apparatus and liquid crystal display apparatus |
| CN108028035A (en) * | 2015-09-14 | 2018-05-11 | 夏普株式会社 | Liquid crystal display device and its driving method |
| WO2020056839A1 (en) * | 2018-09-19 | 2020-03-26 | 重庆惠科金渝光电科技有限公司 | Display device and liquid crystal display |
| US10714043B2 (en) | 2018-09-19 | 2020-07-14 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Display device and liquid crystal display |
| CN111640405A (en) * | 2020-06-30 | 2020-09-08 | 京东方科技集团股份有限公司 | Liquid crystal module driving control method and device and liquid crystal display |
| WO2021189548A1 (en) * | 2020-03-27 | 2021-09-30 | Tcl华星光电技术有限公司 | Pixel charging method and display panel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI758801B (en) * | 2020-07-31 | 2022-03-21 | 敦泰電子股份有限公司 | Fingerprint identification method for in-display fingerprint display device and fingerprint identification and display driver integrated circuit and mobile device using the same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001249643A (en) * | 2000-03-02 | 2001-09-14 | Advanced Display Inc | Driving method for liquid crystal display device and liquid crystal display device using the same method |
| CN1488081A (en) * | 2001-02-05 | 2004-04-07 | 国际商业机器公司 | Liquid crystal display device |
| CN1808556A (en) * | 2006-02-09 | 2006-07-26 | 友达光电股份有限公司 | Drive method capable of improving panel uniformity |
| CN1864093A (en) * | 2003-10-02 | 2006-11-15 | 三洋电机株式会社 | Liquid crystal display unit and driving method therefor and drive device for liquid crystal display panel |
| CN101312020A (en) * | 2007-05-25 | 2008-11-26 | 奇美电子股份有限公司 | LCD and driving method thereof |
| CN102236231A (en) * | 2011-04-12 | 2011-11-09 | 友达光电股份有限公司 | Semi-source driving display panel |
| WO2013179787A1 (en) * | 2012-06-01 | 2013-12-05 | シャープ株式会社 | Method for driving liquid crystal display device, liquid crystal display device, and mobile instrument provided with same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI427612B (en) * | 2010-12-29 | 2014-02-21 | Au Optronics Corp | Method of driving pixel of display panel |
| US9520097B2 (en) * | 2011-11-07 | 2016-12-13 | Sharp Kabushiki Kaisha | Display device with compensating backlight drive circuit and method for driving same |
| TW201331910A (en) * | 2012-01-30 | 2013-08-01 | Himax Tech Ltd | Liquid crystal display |
| US20150022509A1 (en) * | 2012-02-10 | 2015-01-22 | Sharp Kabushiki Kaisha | Display device and drive method therefor |
| TWI457908B (en) * | 2012-03-30 | 2014-10-21 | Au Optronics Corp | A method for improving image sticking of lcd and a lcd using the same |
-
2014
- 2014-09-26 TW TW103133580A patent/TWI547932B/en active
- 2014-11-28 CN CN201410710545.1A patent/CN104375346B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001249643A (en) * | 2000-03-02 | 2001-09-14 | Advanced Display Inc | Driving method for liquid crystal display device and liquid crystal display device using the same method |
| CN1488081A (en) * | 2001-02-05 | 2004-04-07 | 国际商业机器公司 | Liquid crystal display device |
| CN1864093A (en) * | 2003-10-02 | 2006-11-15 | 三洋电机株式会社 | Liquid crystal display unit and driving method therefor and drive device for liquid crystal display panel |
| CN1808556A (en) * | 2006-02-09 | 2006-07-26 | 友达光电股份有限公司 | Drive method capable of improving panel uniformity |
| CN101312020A (en) * | 2007-05-25 | 2008-11-26 | 奇美电子股份有限公司 | LCD and driving method thereof |
| CN102236231A (en) * | 2011-04-12 | 2011-11-09 | 友达光电股份有限公司 | Semi-source driving display panel |
| WO2013179787A1 (en) * | 2012-06-01 | 2013-12-05 | シャープ株式会社 | Method for driving liquid crystal display device, liquid crystal display device, and mobile instrument provided with same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017009987A (en) * | 2015-06-25 | 2017-01-12 | 三星ディスプレイ株式會社Ｓａｍｓｕｎｇ Ｄｉｓｐｌａｙ Ｃｏ．，Ｌｔｄ． | Display device |
| WO2017041318A1 (en) * | 2015-09-09 | 2017-03-16 | 深圳市华星光电技术有限公司 | Driving apparatus and liquid crystal display apparatus |
| CN108028035A (en) * | 2015-09-14 | 2018-05-11 | 夏普株式会社 | Liquid crystal display device and its driving method |
| CN106297693A (en) * | 2016-08-26 | 2017-01-04 | 深圳市华星光电技术有限公司 | Liquid Crystal Display And Method For Driving |
| WO2020056839A1 (en) * | 2018-09-19 | 2020-03-26 | 重庆惠科金渝光电科技有限公司 | Display device and liquid crystal display |
| US10714043B2 (en) | 2018-09-19 | 2020-07-14 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Display device and liquid crystal display |
| WO2021189548A1 (en) * | 2020-03-27 | 2021-09-30 | Tcl华星光电技术有限公司 | Pixel charging method and display panel |
| CN111640405A (en) * | 2020-06-30 | 2020-09-08 | 京东方科技集团股份有限公司 | Liquid crystal module driving control method and device and liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI547932B (en) | 2016-09-01 |
| TW201612885A (en) | 2016-04-01 |
| CN104375346B (en) | 2017-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104375346A (en) | Liquid crystal display panel and driving method thereof | |
| CN102819157B (en) | Display panels and display device | |
| EP2506246A1 (en) | Liquid crystal display | |
| US9548037B2 (en) | Liquid crystal display with enhanced display quality at low frequency and driving method thereof | |
| US10049629B2 (en) | Display device capable of low-speed driving and method of driving the same | |
| CN104483789A (en) | Liquid crystal display panel and driving method of liquid crystal display panel | |
| US8836627B2 (en) | Liquid crystal display apparatus for driving pixel array and pixel driving method | |
| CN101114432B (en) | Liquid crystal display and driving method thereof | |
| CN101211036A (en) | LCD device and its display method | |
| CN101303840A (en) | Liquid crystal display device and driving method thereof | |
| WO2008035476A1 (en) | Displaying device, its driving circuit and its driving method | |
| CN103235431B (en) | Liquid crystal display panel and driving method thereof | |
| CN104732944A (en) | Source drive circuit, source drive method and display device | |
| US8373811B2 (en) | Liquid crystal display device with each pixel having plural capacitors coupling to switches and related driving method | |
| KR102055756B1 (en) | Display device and driving method thereof | |
| US20160178973A1 (en) | Liquid Crystal Display Panel and Liquid Crystal Display Device | |
| CN103839526A (en) | Display apparatus | |
| US9711076B2 (en) | Display device | |
| KR20120050113A (en) | Liquid crystal display device and driving method thereof | |
| CN103901689A (en) | LCD panel and active shutter 3D LCD device | |
| CN109285523B (en) | Driving system and driving method of liquid crystal display panel | |
| CN101567169A (en) | Driving method of liquid crystal display device | |
| KR20080022932A (en) | Power module for liquid crystal display, liquid crystal display having this and driving method thereof | |
| KR20080062454A (en) | Liquid crystal display and driving method thereof | |
| CN103606355A (en) | Driving method of display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |