WO2015180226A1 - 一种液晶显示面板、显示装置及其驱动方法 - Google Patents
一种液晶显示面板、显示装置及其驱动方法 Download PDFInfo
- Publication number
- WO2015180226A1 WO2015180226A1 PCT/CN2014/080804 CN2014080804W WO2015180226A1 WO 2015180226 A1 WO2015180226 A1 WO 2015180226A1 CN 2014080804 W CN2014080804 W CN 2014080804W WO 2015180226 A1 WO2015180226 A1 WO 2015180226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sub
- data
- same
- line
- pixel
- 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.)
- Ceased
Links
Classifications
-
- 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
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
-
- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2074—Display of intermediate tones using sub-pixels
-
- 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
- G09G3/3607—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 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0421—Structural details of the set of electrodes
- G09G2300/0426—Layout of electrodes and connections
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/027—Details of drivers for data electrodes, the drivers handling digital grey scale data, e.g. use of D/A converters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
-
- 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
- G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
- G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
-
- 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
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
Definitions
- Liquid crystal display panel Liquid crystal display panel, display device and driving method thereof
- the present invention relates to the field of display technology, and in particular to a liquid crystal display panel, a display device, and a driving method thereof.
- the crosstalk phenomenon of the TFT-LCD refers to the phenomenon that the different areas of the panel interact with each other during display, resulting in display abnormality. According to the influence position of crosstalk, the crosstalk phenomenon of TFT-LCD can be divided into vertical crosstalk and lateral crosstalk. Among them, horizontal crosstalk (H-Crosstalk) is the most common and most serious. Lateral crosstalk generally uses the "dark bottom bright frame" detection screen shown in Figure 1. As shown in Fig. 1, a "high-gray" image of a high gray level is displayed in the middle 105 area, and a "dark bottom” background of a low gray level is displayed in the surrounding areas 101 to 104.
- the driving voltages of the longitudinal data lines of the areas 102, 104, and 105 have instantaneous voltage jumps at the boundaries of the above-mentioned three area contacts.
- the driving voltage of the vertical data line is low to display a "dark bottom" background
- the driving voltage of the vertical data line is high to display a "bright frame” image.
- the driving voltage of the vertical data line generates a transition from a low level to a high level at the boundary position of the 102 and 105 regions.
- the present invention provides a liquid crystal display panel capable of eliminating lateral crosstalk, comprising a plurality of scan lines, data lines, and sub-pixel unit arrays, wherein adjacent nth and n+1th scans are performed.
- a liquid crystal display panel capable of eliminating lateral crosstalk
- the first sub-pixel group is connected to the nth scan line
- the second sub-pixel group is connected to the n+1th scan line, so that The sub-pixel units controlled by the same scan line are distributed in adjacent rows, and n is a positive integer.
- the first sub-pixel group and the second sub-pixel group respectively comprise 2m sub-pixel units side by side, m being a positive integer.
- m has a value in the range of l m 50.
- the data signals provided by adjacent data lines are opposite in polarity during the same scan period.
- the data signals provided by the same data line are of the same polarity during the same frame period.
- a liquid crystal display device comprising:
- a scan signal driving unit configured to provide a scan pulse signal to the scan line to respectively open a sub-pixel unit connected to the scan line;
- a data signal driving unit configured to provide a data signal to the data line to charge the sub-pixel unit connected to the data line when the sub-pixel unit is turned on.
- the apparatus further includes a timing controller for providing a polarity inversion signal to the data signal driving unit such that data signal polarities provided by adjacent data lines in the same row period Instead, the data signals provided by the same data line are the same polarity during the same frame period.
- a driving method of a liquid crystal display device comprising the steps of:
- the scan line turns on a first sub-pixel group in the nth row of sub-pixel units to cause the data line to charge it;
- the scan line turns on the second sub-pixel group in the nth row of sub-pixel units to cause the data line to charge it.
- the data signals provided by adjacent data lines are opposite in polarity during the same scan period, and the data signals provided by the same data line are of the same polarity during the same frame period.
- the first sub-pixel group and the second sub-pixel group respectively comprise 2m sub-pixel units side by side, m is a positive integer, and m has a value range of l m 50.
- the display screen turns from black to white, or from white to black, in the same scanning period, the data signal voltages supplied by the data lines do not all jump, but only half of the data signal voltages of the data lines jump. Therefore, the average voltage variation of the data line is reduced by half in each scanning period, so that the amount of change in the V ram potential is correspondingly reduced by half, so that the "grey line” brightness is significantly reduced.
- the brightness change can be prevented from being too sharp, and the "grey line” can be blurred, thereby eliminating the lateral crosstalk phenomenon.
- Figure 1 is a dark bottom bright frame picture for detecting lateral crosstalk
- FIG. 2 is a schematic structural view of a liquid crystal display device according to an embodiment of the present invention.
- FIG. 3 is a schematic structural view of a display panel in the prior art
- 4 is a data line voltage distribution diagram of the display panel when the detection screen shown in FIG. 1 is displayed in the prior art
- 5a is a schematic diagram of driving voltages on data lines of D5, D7, D9, and D1 when the detection screen shown in FIG. 1 is displayed in the prior art
- FIG. 5b is a schematic diagram showing driving voltages on the data lines of D6, D8, D10, and D12 when the detection screen shown in FIG. 1 is displayed in the prior art;
- FIG. 5b is a schematic diagram showing driving voltages on the data lines of D6, D8, D10, and D12 when the detection screen shown in FIG. 1 is displayed in the prior art;
- FIG. 5c is a schematic diagram of a common electrode voltage when the detection screen shown in FIG. 1 is displayed in the prior art
- FIG. 6 is a schematic structural view of a display panel according to an embodiment of the present invention.
- FIG. 7 is a data line voltage distribution diagram when the detection screen shown in FIG. 1 is displayed on the display panel shown in FIG. 6.
- FIG. 8a is a view showing the detection screen shown in FIG. 1 on the display panel shown in FIG. Schematic diagram of the driving voltage on the D7 and Dl 1 data lines;
- 8b is a schematic diagram of driving voltages on the data lines of D5 and D9 when the detection screen shown in FIG. 1 is displayed on the display panel shown in FIG. 6;
- 8c is a schematic diagram of driving voltages on the data lines of D8 and D12 when the detection screen shown in FIG. 1 is displayed on the display panel shown in FIG. 6;
- 8d is a schematic diagram of driving voltages on the data lines of D6 and D10 when the detection screen shown in FIG. 1 is displayed on the display panel shown in FIG. 6;
- FIG. 8e is a schematic diagram of a common electrode voltage when the detection screen shown in FIG. 1 is displayed on the display panel shown in FIG. 6.
- FIG. 9a is a first to fourth column when the detection screen shown in FIG. 1 is displayed in the prior art. Average brightness distribution of the pixel unit;
- Fig. 9b is an average luminance distribution diagram of the sub-pixel units of the first to fourth columns when the detection screen shown in Fig. 1 is displayed on the display panel shown in Fig. 6. detailed description
- FIG. 2 is a schematic structural view of a liquid crystal display device 200 according to the present embodiment.
- the liquid crystal display device 200 includes a display panel 210, a scan driving unit 220, a data driving unit 230, and a timing control unit 240.
- the scan driving unit 220 and the data driving unit 230 are electrically connected to the display panel 210, respectively.
- the timing control unit 240 is electrically connected to the scan driving unit 220 and the data driving unit 230 for controlling the scan driving unit 220 to scan the display panel 210, and controls the data driving unit 230 to drive the display panel 210 to display an image.
- FIG. 3 is a schematic structural view of a display panel 210 in the prior art.
- the display panel 210 includes a plurality of interlaced scan lines G1 to G8, data lines D1 to D16, and a sub-pixel unit array.
- the nth scan line controls the switch of the n-th sub-pixel unit, that is, the controlled sub-pixel unit is located on the same side of the controlled scan line.
- the timing control unit 240 generates the POL polarity inversion control signal, so that the odd-numbered data lines Dl, D3, D5, D7 on the data signal voltage polarity is positive, i.e. V data is greater than or equal to V c. m (common electrode voltage); and make the data signal voltage on the even-numbered data lines D2, D4, D6, D8 negative, that is, V data is less than or equal to V ram (common electrode voltage).
- the POL signal also makes the data signals provided by the same data line the same polarity in the same frame period.
- the area controlled by the scanning line G3 G6 and the data line D5 D12 displays a white screen, and the other areas display a black screen.
- the voltage distribution of the data signals provided by the data lines in Fig. 3 is shown in Fig. 4 in each scanning period.
- the scanning lines G1 and G2 are turned on, and the sub-pixel units in the first row and the second row all display a black screen.
- the scanning line G3 is turned on.
- the 1st to 4th columns and the 13th to 16th column sub-pixel units in the third row should display a black screen
- the sub-pixel units in the 5th to 12th columns should display a white screen.
- V + _V c . m > V com -V. Thanks to V + _V c . m > V com -V., so the average data voltage of data line D5 D12 rises instantaneously. Since there is a parasitic capacitance between the data line and the COM line, the Vcom potential of the common electrode is pulled up in the same direction and instantaneously rises for a while, as shown by the broken line in Fig. 5a.
- the data signal voltage V data of the 1st to 4th column and the 13th to 16th column sub-pixel units in the area on both sides of the third line is written. Equal to the normal V c . m , but the actual voltage of ⁇ ⁇ 111 is higher than the normal V c at this time. m voltage.
- FIG. 5c corresponds to T3 in dashed actual V c. m voltage. Therefore, the above-described sub-pixel unit is actually biased, thereby displaying a gray picture in the areas of 308 and 309 in Fig. 3 instead of the black picture in the normal case.
- the scanning lines G4, G5, and G6 are sequentially turned on, and the sub-pixel units of the first to fourth columns and the 13th to the 16th to 16th columns should display a black screen, and the sub-pixels of the fifth to the twelfth columns The pixel unit should display a white screen.
- the data voltages of the data lines D1 to D16 do not change, and all the sub-pixel units can display the black screen and the white screen normally.
- the scanning line G7 is turned on. Under normal circumstances, all sub-pixel units in the seventh line should display a black screen.
- the data signal voltage V data of the sub-pixel units of the 1st to 16th columns in the seventh row is equal to the normal V com , but the actual V ram potential is lower than the normal V ram potential, as shown in FIG. 5c.
- the dotted line corresponding to T7 shows the actual V c . m voltage. Therefore, the above-described sub-pixel unit is actually biased, so that a gray screen is displayed in the area of 310 in Fig. 3 instead of the black screen in a normal case.
- the scanning line G8 is turned on, and the sub-pixel units of the eighth line all display a black screen.
- the display panel 210 shown in FIG. 6 is provided in the embodiment of the present invention.
- FIG. 6 is a schematic structural view of a display panel 210 according to an embodiment of the present invention.
- the display panel 210 includes a plurality of scan lines G1 to G8, data lines D1 to D16, and sub-pixel unit arrays that are arranged in an erroneous manner. Wherein, the sub-pixel units controlled by the same scan line are distributed in adjacent rows.
- the third row in the sub-pixel cell array includes a first sub-pixel cell group and a second sub-pixel cell group that are alternately arranged.
- the first sub-pixel unit group includes sub-image unit P37 and P38, which are respectively connected to the scan line G3;
- the two sub-pixel unit group includes sub-image units P35 and P36, which are respectively connected to the scanning line G4.
- the sub-pixel units P25 and P26 controlled by the scanning line G3 are distributed in the second row, and the sub-pixel units P37 and P38 controlled by the scanning line G3 are distributed in the third row.
- sub-pixel unit group provided in this embodiment includes two sub-pixel units arranged side by side, those skilled in the art can easily understand that four, six, ... 2m sub-pixel units can also be included.
- the area controlled by the scanning line G3 G6 and the data line D5 D12 displays a white screen, and the other areas display a black screen.
- the voltage distribution of the data signals supplied from the respective data lines in Fig. 6 is shown in Fig. 7 in each scanning period.
- the scanning lines G1 and G2 are turned on, and the sub-pixel units in the first row and the second row all display a black screen.
- V c . m > V com -V., so the average potential of the data lines D7, D8, D11, and D12 rises instantaneously.
- V c . m is also raised by "same direction" and it takes a while to return to normal.
- the signal voltage V data to which the sub-pixel units of the 1st to 6th columns, the 9th to 10th columns, and the 13th to 16th columns are written is equal to the normal V c . m , but the actual V c at this time.
- the m potential is higher than the normal V c . m potential, so these sub-pixel units are actually
- a bias voltage is applied, a gray screen is displayed, that is, gray pictures are displayed in the sub-pixel units P21, P22, P33, P34, P25, P26, P29, P210 P213, P214, P315, and P316.
- V c due to V c .
- the instantaneous rise of m is only half of the conventional design, so the bias value applied to these Sub-Pixels is much smaller than that of the conventional design, so that the brightness of the gray image is significantly reduced.
- the scanning line G4 is turned on.
- the sub-pixel units of columns 1 to 4 and columns 13 to 16 should display a black screen
- the sub-pixel units of columns 5 to 12 should display a white screen.
- the signal voltage V data to which the sub-pixel regions D1 to D4 and the D13 D16 column sub-pixel unit are written is equal to the normal V c . m , but the actual V c at this time.
- the m potential is higher than the normal V c .
- the m potential therefore, these sub-pixel units are actually biased, and a gray picture is displayed, that is, gray pictures are displayed in the sub-pixel units P31, P32, P43, P44, P313, P314, P415, and P416. Because of V c .
- the potential value of m rising instantaneously is the same as the instant of turning on the scanning line G3, so the bias value applied to these sub-pixel units is also the same as the instant of turning on the scanning line G3, so that the brightness of the gray picture is also the same.
- scan lines G5 and G6 are turned on, and sub-pixel units in columns 1 to 4 and 13 16 columns should display a black screen, and sub-pixel units in columns 5 to 12 should display a white screen.
- the potential of the data line D1 D16 does not change, and all the sub-pixel units can display the black screen and the white screen normally.
- the scanning line G7 is turned on. Normally, the sub-pixel units of columns 1 to 4, columns 7-8, and 11-16 should display a black screen, and the sub-pixel units of columns 5, 6, 9, and 10 should display a white screen.
- V + _V c . m > V com -V. so the average potential of the data lines D7, D8, Dl l, D12 drops instantaneously. Therefore, V ram is also dropped by "same direction", and it takes a while to return to normal, as shown by the dotted line at T7 in Figure 8e.
- the average potential of the eight data lines drops instantaneously.
- the average potential of one half of the data lines decreases instantaneously. Therefore, the average potential drop value is only the prior art.
- the average voltage drops by half.
- V c The potential value at which m is "dropped in the same direction" is also half of that of the prior art.
- the signal voltage V data of 7 to 8 and 11 to 16 is written in sub-pixel units is equal to the normal V c. m , but the actual V c at this time.
- the m potential is lower than the normal V c . m potential, so these sub-pixel units are actually biased and will display a gray image, ie in sub-pixel units P61, P62, P73, P74, P77, P78, P711, P712, P613, P614, P715 and P716 A gray screen is displayed in the middle.
- V c due to V c .
- the potential value of the m momentary drop is only half of that of the prior art, so the bias value applied to these sub-pixel units is much smaller than that of the prior art design, so that the brightness of the gray picture is significantly reduced.
- the scanning line G8 is turned on. Normally, the 8th row of sub-pixel units all display a black screen.
- V ram is also dropped by "same direction" and it takes a while to return to normal, as shown by the dotted line at position T8 in Figure 8e.
- the average potential drop value of the data line is the same as the T7 turn-on instant, so that the potential value at which V ram is instantaneously dropped by "same direction pull" is also the same as the T7 turn-on instant.
- the signal voltage V data of the 1st to 16th column sub-pixel units of the 8th row is equal to the normal V c . m , but the actual V c at this time.
- the m potential is lower than the normal V c .
- the m potential so the above sub-pixel unit is actually biased, and a gray screen is displayed, that is, in the sub-pixel units P71, P72, P83, P84, P75, P76, P87, P88, P79, P710, P811, P812.
- Gray screens are displayed in P713, P714, P815, and P816. Because of V c . m instantaneously drops the same potential as the G7 turn-on instant, so the bias value applied to these sub-pixel units is the same as the G7 turn-on instant.
- the brightness of the gray screen is the same.
- the scanning line G9 is turned on, and all the sub-pixel units in the first to the 16th columns should display a black screen.
- the sub-pixel unit groups connected to the same scan line are distributed in adjacent rows.
- the data signal voltages supplied by the data lines do not all jump, but only half of the data signal voltages of the data lines jump. Therefore, the average voltage variation of the data line is reduced by half in each scanning period, so that the amount of change in the V ram potential is correspondingly reduced by half. This will result in a significant reduction in the "grey line" brightness, as shown in Figures 9a and 9b.
- the sub-pixel unit groups connected to the same scan line are distributed in adjacent rows, when V c .
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
一种液晶显示面板(210)、显示装置(200)及其驱动方法。所述液晶显示面板(210)包括若干条扫描线(G1-G8)、数据线(D1-D16)以及亚像素单元阵列,其中,在相邻的第n条和第n+1条扫描线之间设置交替排布的第一亚像素组和第二亚像素组,第一亚像素组连接至第n条扫描线,第二亚像素组连接至第n+1条扫描线,以使得同一条扫描线控制的亚像素单元分布在相邻行中,n为正整数。
Description
一种液晶显示面板、 显示装置及其驱动方法
相关申请的交叉引用
本申请要求享有 2014年 5月 30日提交的名称为 "一种液晶显示面板、显示装置及其 驱动方法" 的中国专利申请 CN201410241110. 7的优先权, 其全部内容通过引用并入本文 中。 技术领域
本发明涉及显示技术领域, 具体地说, 涉及一种液晶显示面板、显示装置及其驱动方 法。
背景技术
TFT-LCD 的串扰现象是指在显示时面板不同区域之间互相影响, 导致出现显示异常 的现象。 根据串扰的影响位置不同, TFT-LCD 的串扰现象可分为纵向串扰和横向串扰。 其中, 横向串扰 (H-Crosstalk) 是最常见也是最严重的。 横向串扰一般采用图 1所示的 "暗底亮框"检测画面。 如图 1所示, 在中间 105区域 中显示高灰阶的 "亮框" 图象, 在周围的 101至 104区域中显示低灰阶的 "暗底"背景。 此时, 102、 104和 105区域的纵向数据线的驱动电压在上述三个区域接触的边界处存在 瞬间的电压跳变。 例如, 在 102区域中, 纵向数据线的驱动电压为低电平以显示 "暗底" 背景, 在 105区域中, 纵向数据线的驱动电压为高电平以显示"亮框"图象。 这样, 纵向 数据线的驱动电压在 102与 105区域的边界位置处产生由低电平到高电平的跳变。 由于数据线和 COM线之间存在寄生电容,当数据线的驱动电压在一瞬间有较大变化 时, 公用电极的 Vcom电位被同向拉动, 需要维持一段时间才能恢复正常。 如此以来, 使 得图 1中 102与 105区域的边界位置的像素电压不能达到规定的电压值,形成一条锐利的 亮线 106。 类似的, 图 1中 104与 105区域的边界位置处会形成一条锐利的亮线 107。 亮线 106 和 107的出现即为横向串扰现象。
因此, 亟需一种能够消除横向串扰的液晶显示面板、 显示装置及其驱动方法。 发明内容
为了解决上述技术问题,本发明提供一种能够消除横向串扰的液晶显示面板,包括若 干条扫描线、 数据线以及亚像素单元阵列, 其中, 在相邻的第 n条和第 n+1条扫描线之 间设置交替排布的第一亚像素组和第二亚像素组,第一亚像素组连接至第 n条扫描线,第 二亚像素组连接至第 n+1 条扫描线, 以使得同一条扫描线控制的亚像素单元分布在相邻 行中, n为正整数。 根据本发明的一个实施例,所述第一亚像素组和第二亚像素组分别包括并排的 2m个 亚像素单元, m为正整数。
根据本发明的一个实施例, m的取值范围为 l m 50。
根据本发明的一个实施例, 在同一扫描周期中相邻数据线提供的数据信号极性相反。 根据本发明的一个实施例, 在同一帧周期中同一数据线提供的数据信号极性相同。 根据本发明的另一方面, 提供一种液晶显示装置, 包括:
上述液晶显示面板;
扫描信号驱动单元,用于向所述扫描线提供一序列扫描脉冲信号, 以分别打开与扫描 线连接的亚像素单元;
数据信号驱动单元, 用于向所述数据线提供数据信号, 以在所述亚像素单元打开时, 向与所述数据线连接的亚像素单元充电。
根据本发明的一个实施例,所述装置还包括时序控制器,其用以向所述数据信号驱动 单元提供极性反转信号,使得在同一行周期中相邻数据线提供的数据信号极性相反,并且 在同一帧周期中同一数据线提供的数据信号极性相同。
根据本发明的另一方面, 提供液晶显示装置的驱动方法, 包括以下步骤:
向扫描线提供序列扫描脉冲信号, 以分别打开与扫描线连接的亚像素单元, 其中, 在 相邻的第 n条和第 n+1条扫描线之间设置交替排布的第一亚像素组和第二亚像素组, 第 一亚像素组连接至第 n条扫描线, 第二亚像素组连接至第 n+1条扫描线, 以使得同一条 扫描线控制的亚像素单元分布在相邻行中;
向所述数据线提供数据信号, 以在所述亚像素单元打开时, 向与所述数据线连接的亚 像素单元充电;
其中, 在第 n个行周期中, 所述扫描线打开第 n行亚像素单元中的第一亚像素组, 以 使得所述数据线对其充电; 以及
在第 n+1个行周期中, 所述扫描线打开第 n行亚像素单元中的第二亚像素组, 以使 得所述数据线对其充电。
根据本发明的一个实施例, 在同一扫描周期中相邻数据线提供的数据信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
根据本发明的一个实施例,所述第一亚像素组和第二亚像素组分别包括并排的 2m个 亚像素单元, m为正整数, m的取值范围为 l m 50。
本发明将每 2η (η=1~50)个左右相邻的亚像素单元组成一组, 每组采用 "上下上下" 的交错结构与施控的扫描线相接, 同一条扫描线控制的亚像素单元分布在相邻行中。当显 示画面由黑变白, 或者由白变黑时, 在同一扫描周期中, 数据线提供的数据信号电压并非 全部发生跳变, 而是只有一半的数据线的数据信号电压发生跳变。 因此, 在每个扫描周期 中数据线的平均电压变化量会降低一半,从而使得 Vram电位的变化量也相应地降低一半, 这样就可使 "灰线"亮度显著降低。 同时可避免亮度变化过于锐利, 使 "灰线"模糊化, 从而可消除横向串扰现象。
本发明的其它特征和优点将在随后的说明书中阐述,并且,部分地从说明书中变得显 而易见, 或者通过实施本发明而了解。本发明的目的和其他优点可通过在说明书、权利要 求书以及附图中所特别指出的结构来实现和获得。 附图说明
附图用来提供对本发明的进一步理解,并且构成说明书的一部分,与本发明的实施例 共同用于解释本发明, 并不构成对本发明的限制。 在附图中:
图 1是用于检测横向串扰的暗底亮框画面;
图 2是本发明实施例的液晶显示装置的结构示意图;
图 3是现有技术中显示面板的结构示意图;
图 4是现有技术中显示图 1所示的检测画面时, 显示面板的数据线电压分布图;
图 5a是现有技术中显示图 1所示的检测画面时, D5、 D7、 D9、 Dl l数据线上的驱 动电压示意图;
图 5b是现有技术中显示图 1所示的检测画面时, D6、 D8、 D10、 D12数据线上的驱 动电压示意图;
图 5c是现有技术中显示图 1所示的检测画面时, 公用电极电压示意图;
图 6是本发明实施例的显示面板的结构示意图;
图 7是在图 6所示的显示面板上显示图 1所示的检测画面时, 数据线电压分布图; 图 8a是在图 6所示的显示面板上显示图 1所示的检测画面时, D7和 Dl 1数据线上 的驱动电压示意图;
图 8b是在图 6所示的显示面板上显示图 1所示的检测画面时, D5和 D9数据线上 的驱动电压示意图;
图 8c是在图 6所示的显示面板上显示图 1所示的检测画面时, D8和 D12数据线上 的驱动电压示意图;
图 8d是在图 6所示的显示面板上显示图 1所示的检测画面时, D6和 D10数据线上 的驱动电压示意图;
图 8e是在图 6所示的显示面板上显示图 1所示的检测画面时,公用电极电压示意图; 图 9a是现有技术中显示图 1所示的检测画面时, 第 1~4列亚像素单元的平均亮度分 布图;
图 9b是在图 6所示的显示面板上显示图 1所示的检测画面时, 第 1~4列亚像素单元 的平均亮度分布图。 具体实施方式
为使本发明的目的、技术方案和优点更加清楚, 以下结合附图对本发明作进一步地详 细说明。
图 2为根据本实施例的液晶显示装置 200的结构示意图。如图 2所示,液晶显示装置 200包括显示面板 210、 扫描驱动单元 220、 数据驱动单元 230, 以及时序控制单元 240。
扫描驱动单元 220与数据驱动单元 230分别电连接至显示面板 210。时序控制单元 240 电连接至扫描驱动单元 220和数据驱动单元 230,用以控制扫描驱动单元 220扫描显示面 板 210, 并控制数据驱动单元 230驱动显示面板 210以显示图像。
图 3是现有技术中显示面板 210的结构示意图。显示面板 210包括若干条交错设置的 扫描线 G1至 G8、 数据线 D1至 D16以及亚像素单元阵列。 第 n条扫描线控制第 n行亚 像素单元的开关, 即受控的亚像素单元位于施控的扫描线的同侧。
时序控制单元 240产生极性反转控制信号 POL, 使得奇数序号的数据线 Dl、 D3、 D5、 D7 上的数据信号电压为正极性, 即 Vdata大于或等于 Vc。m (共用电极电压) ; 并使 得偶数序号的数据线 D2、 D4、 D6、 D8 上的数据信号电压为负极性, 即 Vdata小于或等 于 Vram (共用电极电压) 。 POL信号还使得在同一帧周期中同一数据线提供的数据信号 极性相同。
当显示图 1所示的 "暗底亮框" 的检测画面时, 由扫描线 G3 G6和数据线 D5 D12 控制的区域显示白画面, 其他区域显示黑画面。此时, 在每个扫描周期内, 图 3中各条数 据线提供的数据信号的电压分布如图 4所示。
以下结合图 3和图 4具体说明现有技术中横向串扰的产生原因。
( 1 ) 在扫描周期 T1和 T2中, 扫描线 G1和 G2打开, 第一行和第二行中的亚像素 单元全部显示黑画面。 此时数据线 D1 D16的电位均不发生变化 (Vdata=Vc。m) , 第一行 和第二行中全部亚像素单元都能正常显示黑画面。
(2)在扫描周期 T3到来的时刻, 扫描线 G3打开。 正常情况下, 第三行中第 1~4列 和第 13~16列亚像素单元应显示黑画面, 第 5~12列的亚像素单元应显示白画面。 但是, 由于数据线 D5、 D7、 D9和 D11的数据信号电压为正极性, 数据线 D5、 D7、 D9禾 Q D11 的数据信号电压 Vdata由之前的 V^^V^nJ 间上升变为 Vdata=V+; 同样的, 由于数据线 D6、 D8、 D10和 D12的数据信号电压为负极性, 数据线 D6、 D8、 D10和 D12的数据信 号电压由之前的 Vdata=Vc。m瞬间下降变为 Vdata= 。
由于 V+_Vc。m > Vcom-V., 因此数据线 D5 D12的平均数据电压瞬间上升。由于数 据线和 COM线之间存在寄生电容,因此,公用电极的 Vcom电位被同向拉动而瞬时上升, 并维持一段时间, 如图 5a中的虚线所示。
此时第 3行两侧区域中第 1~4列和第 13 16列亚像素单元被写入的数据信号电压 Vdata
等于正常的 Vc。m, 但此时实际的 ¥∞111电压高于正常的 Vc。m电压。 图 5c中 T3对应的虚线 所示为实际的 Vc。m电压。 因此, 上述亚像素单元实际上被施加了偏压, 从而在图 3中的 308和 309区域显示出灰色画面, 而不是正常情况下的黑色画面。
(3 ) 在扫描周期 T4、 Τ5和 Τ6中, 扫描线 G4、 G5和 G6依次打开, 第 1~4列和 第 13~16列的亚像素单元应显示黑画面, 第 5~12列的亚像素单元应显示白画面。 此时数 据线 D1~D16的数据电压均不发生变化, 全部亚像素单元都能正常显示黑画面和白画面。
(4)在扫描周期 T7到来的时刻, 扫描线 G7打开。 正常情况下, 第七行中的全部亚 像素单元应显示黑画面。
但是, 由于数据线 D5、 D7、 D9禾 Q D11的数据信号电压为正极性, D5、 D7、 D9和 D11的数据信号电压由之前的 Vdata=V+瞬间下降变为 Vdata=Vc。m;同样的,由于数据线 D6、 D8、 D10和 D12的数据信号电压为负极性, D6、 D8、 D10和 D12的数据信号电压由之 前的 Vdata=Vj舜间上升变为 Vdata=Vc。m。 由于 V+_Vc。m > Vcom-V., 因此 Data5~12的平 均电位瞬间下降。 从而 Vc。m也被 "同向拉动"瞬间下降, 需经过一段时间后才能恢复正 常, 如图 5b中 T7对应的的虚线所示。
此时第七行中的第 1~16 列的亚像素单元被写入的数据信号电压 Vdata等于正常的 Vcom, 但此时实际的 Vram电位低于正常的 Vram电位, 图 5c中 T7对应的虚线所示为实际 的 Vc。m电压。 因此上述亚像素单元实际上被施加了偏压, 从而在图 3中的 310区域显示 出灰色画面, 而不是正常情况下的黑色画面。
(5 )在扫描周期 T8中, 扫描线 G8打开, 第八行的亚像素单元全部显示黑画面。 此 时数据线 D1~D16的电位均不发生变化 (Vdata=Vc。m) , 第八行中全部亚像素单元都能正 常显示黑画面。
为了改善 308、 309、 310区域的显示异常现象, 本发明实施例中提供图 6所示的显示 面板 210。
图 6是根据本发明实施例的显示面板 210的结构示意图。显示面板 210包括若干条交 错设置的扫描线 G1至 G8、 数据线 D1至 D16以及亚像素单元阵列。 其中, 同一条扫描 线控制的亚像素单元分布在相邻行中。
例如,亚像素单元阵列中的第 3行包括交替排布的第一亚像素单元组和第二亚像素单 元组。 其中, 第一亚像素单元组包括亚像像单元 P37和 P38, 分别连接至扫描线 G3; 第
二亚像素单元组包括亚像像单元 P35和 P36, 分别连接至扫描线 G4。
因此, 由扫描线 G3控制的亚像素单元 P25和 P26分布在第 2行中, 而由扫描线 G3 控制的亚像素单元 P37和 P38分布在第 3行中。
需要说明的是, 虽然本实施例中提供的亚像素单元组包括并排设置的 2 个亚像素单 元, 本领域技术人员容易理解, 也可包括 4个、 6个…… 2m个亚像素单元。 亚像素单元 的数目一般不超过 100个, 即 m=l~50。
当显示图 1所示的 "暗底亮框" 的检测画面时, 由扫描线 G3 G6和数据线 D5 D12 控制的区域显示白画面, 其他区域显示黑画面。此时, 在每个扫描周期内, 图 6中各条数 据线提供的数据信号的电压分布如图 7所示。
以下结合图 6和图 7具体说明本发明实施例中可以消除横向串扰的原理。
( 1 ) 在扫描周期 T1和 T2中, 扫描线 G1和 G2打开, 第一行和第二行中的亚像素 单元全部显示黑画面。 此时数据线 D1 D16的电位均不发生变化 (Vdata=Vc。m) , 第一行 和第二行中全部亚像素单元都能正常显示黑画面。
(2)在扫描周期 T3到来的时刻,扫描线 G3打开。正常情况下, 第 1~6列、第 9~10 和第 13~16列亚像素单元应显示黑画面, 第 7列、 第 8列、 第 11列、 第 12列的亚像素 单元应显示白画面。
如图 8a所示, 由于数据线 D7、 D11 的数据信号电压为正极性, 数据线 D7、 D11 的数据信号电压由之前的 V^^V^n 间上升变为 Vdata=V+, 而 D5、 D9的电位 Vdata维持 Vdata=V™m不变。 如图 8c所示, 由于数据线 D8、 D12的数据信号电压为负极性, 数据线 D8、 D12的数据信号电压由之前的 Vdata=Vc。m瞬间下降变为 Vdata=V_,而数据线 D6、 D10 的电位 Vdata维持 Vdata=Vc。m不变。由于 V+_Vc。m > Vcom-V.,因此数据线 D7、D8、D11、 D12的平均电位瞬间上升。 从而 Vc。m也被 "同向拉动"瞬间上升, 需经过一段时间后才 能恢复正常。
但是, 根据图 5a, 现有技术中此时有 8根数据线 (D5~D12) 的平均电位瞬间上升, 本实施例中此时只有其中一半数据线的平均电位瞬间上升,因此平均电位上升值只有现有 技术的一半。 从而 Vc。m被 "同向拉动"瞬间上升的电位值也只有现有技术的一半。
此时第 1~6列、第 9~10列和第 13~16列的亚像素单元被写入的信号电压 Vdata等于正 常的 Vc。m, 但此时实际的 Vc。m电位高于正常的 Vc。m电位, 因此这些亚像素单元实际上被
施加了偏压, 会显示出灰画面, 即在亚像素单元 P21、 P22、 P33、 P34、 P25、 P26、 P29、 P210 P213、 P214、 P315和 P316中显示灰色画面。 但是, 由于 Vc。m瞬间上升的电位值 只有传统设计的一半, 因此这些 Sub-Pixel上被施加的偏压值远小于采用传统设计时的偏 压值, 从而灰画面的亮度会显著地降低。
(3 )在扫描周期 T4到来的时刻, 扫描线 G4打开。 正常情况下, 第 1~ 4列和第 13~ 16列亚像素单元应显示黑画面, 第 5~ 12列亚像素单元应显示白画面。
请参考图 8a和图 8b, 此时在中间区域, 由于数据线 D5、 D9的数据信号电压为正 极性, 数据线 D5、 D9的数据信号电压 Vdata由之前的 Vdata=V™m瞬间上升变为 Vdata=V+, 而数据线 D7、 D11的电位 Vdata维持 Vdata=V+不变。如图 8c和图 8d所示,数据线 D6、 D10 的数据信号电压为负极性, 数据线 D6、 D10 的数据信号电位 Vdata由之前的 Vdata=V™m 瞬间下降变为 Vdata=V 而 D8、D12的电位 Vdata维持 Vdata=V ^变。由于 V+_Vram > Vcom -V., 因此数据线 D5、 D6、 D9、 D10的平均电位瞬间上升。 从而 Vc。m也被 "同向拉动" 瞬间上升, 需经过一段时间后才能恢复正常。 此时数据线的平均电位上升值和扫描线 G3 开启瞬间一样。从而 Vc。m被 "同向拉动"瞬间上升的电位值也和扫描线 G3开启瞬间一样, 如图 8e中 T4处的虚线所示。
此时两侧区域 D1~D4列和 D13 D16列亚像素单元被写入的信号电压 Vdata等于正常 的 Vc。m, 但此时实际的 Vc。m电位高于正常的 Vc。m电位, 因此这些亚像素单元实际上被施 加了偏压, 会显示出灰画面, 即在亚像素单元 P31、 P32、 P43、 P44、 P313、 P314、 P415 和 P416中显示灰色画面。 由于 Vc。m瞬间上升的电位值和扫描线 G3开启瞬间一样, 因此 这些亚像素单元上被施加的偏压值也和扫描线 G3开启瞬间一样, 从而灰画面的亮度也是 一样的。
(4) 在扫描周期 T5和 T6中, 扫描线 G5和 G6打开, 第 1~4列和第 13 16列亚像 素单元应显示黑画面, 第 5~12列亚像素单元应显示白画面。 此时数据线 D1 D16的电位 均不发生变化, 全部亚像素单元都能正常显示黑画面和白画面。
(5 ) 在扫描周期 T7到来的时刻, 扫描线 G7打开。 正常情况下, 第 1~4列、 第 7~8 列和第 11 16列亚像素单元应显示黑画面, 第 5、 6、 9、 10列亚像素单元应显示白画面。
如图 8a和图 8b所示, 由于数据线 D7、 D11的数据信号电压为正极性, 数据线 D7、 D11的数据信号电压 Vdata由之前的 Vdata= V+瞬间下降变为 Vdata=Vc。m, 而 D5、 D9的电位 Vdata维持 Vdata=V+不变。 如图 8c和图 8d所示, 由于数据线 D8、 D12的数据信号电压为
负极性,数据线 D8、 D12的数据信号电压 Vdata由之前的 Vdata= 瞬间上升变为 Vdata=Vc。m, 而数据线 D6、 D10的电位 Vdata维持 Vdata=V_不变。 由于 V+_Vc。m > Vcom-V., 因此数 据线 D7、 D8、 Dl l、 D12的平均电位瞬间下降。 从而 Vram也被 "同向拉动"瞬间下降, 需经过一段时间后才能恢复正常, 如图 8e中 T7处的虚线所示。
但是, 现有技术中此时有 8根数据线(D5 D 12) 的平均电位瞬间下降, 本实施例中 此时只有其中一半数据线的平均电位瞬间下降,因此平均电位下降值只有现有技术的平均 电压下降值的一半。 从而 Vc。m被 "同向拉动"瞬间下降的电位值也只有现有技术的一半。
此时, 第 1~4列、 第 7~8列和第 11~16列亚像素单元被写入的信号电压 Vdata等于正 常的 Vc。m, 但此时实际的 Vc。m电位低于正常的 Vc。m电位, 因此这些亚像素单元实际上被 施加了偏压, 会显示出灰画面, 即在亚像素单元 P61、 P62、 P73、 P74、 P77、 P78、 P711、 P712、 P613、 P614、 P715和 P716中显示灰色画面。 但是, 由于 Vc。m瞬间下降的电位值 只有现有技术的一半,因此这些亚像素单元上被施加的偏压值远小于采用现有技术设计时 的偏压值, 从而灰画面的亮度会显著地降低。
(6)在扫描周期 T8到来的时刻, 扫描线 G8打开。 正常情况下, 第 8行亚像素单元 全部显示黑色画面。
如图 8a和图 8b所示, 由于数据线 D5、 D9的数据信号电压为正极性, 数据线 D5、 D9的数据信号电压 Vdata由之前的 Vdata= V+瞬间下降变为 Vdata=V™m, 而数据线 D7、 D11 的电位 Vdata维持 Vdata=V™m不变。 由于数据线 D6、 D10的数据信号电压为负极性, 如图 8c和图 8d所示, 数据线 D6、 D10的数据信号电压 Vdata由之前的 Vdata= V_瞬间上升变为 Vdata=Vcom, 而数据线 D8、 D12的电位 Vdata维持 Vdata=Vc。m不变。 由于 V+_Vc。m > Vcom -V., 因此数据线 D5、 D6、 D9、 D10的平均电位瞬间下降。 从而 Vram也被 "同向拉动" 瞬间下降, 需经过一段时间后才能恢复正常, 如图 8e中 T8位置处的虚线所示。 此时数 据线的平均电位下降值和 T7开启瞬间一样, 从而 Vram被 "同向拉动"瞬间下降的电位值 也和 T7开启瞬间一样。
此时第 8行的第 1~16列亚像素单元被写入的信号电压 Vdata等于正常的 Vc。m,但此时 实际的 Vc。m电位低于正常的 Vc。m电位, 因此上述亚像素单元实际上被施加了偏压, 会显 示出灰画面, 即在亚像素单元 P71、 P72、 P83、 P84、 P75、 P76、 P87、 P88、 P79、 P710、 P811、 P812、 P713、 P714、 P815和 P816中显示灰色画面。 由于 Vc。m瞬间下降的电位值 和 G7开启瞬间一样, 因此这些亚像素单元上被施加的偏压值也和 G7开启瞬间一样, 从
而灰画面的亮度也是一样的。
(7)在扫描周期 T9中, 扫描线 G9打开, 第 1~16列全部亚像素单元应显示黑画面。 此时, 数据线 D1~ D16的电位均不发生变化 (Vdata=Vc。m) , 全部亚像素单元都能正常显 示黑画面。
综上所述,在本发明实施例中的显示面板结构中,连接至同一扫描线的亚像素单元组 分布在相邻行中。 当显示画面由黑变白, 或者由白变黑时, 在同一扫描周期中, 数据线提 供的数据信号电压并非全部发生跳变, 而是只有一半的数据线的数据信号电压发生跳变。 因此, 在每个扫描周期中数据线的平均电压变化量会降低一半, 从而使得 Vram电位的变 化量也相应地降低一半。 这样就可使 "灰线"亮度显著降低, 如图 9a和图 9b所示。 进一步而言, 因为连接至同一扫描线的亚像素单元组分布在相邻行中, 当 Vc。m电位 的出现变化时, 发生亮度变化的亚像素单元分布在相邻行中, 因此原来的一根"灰线"就 会扩展为 "三根灰线" , 如图 9b所示。 由于第三行中第 1~4列的亚像素单元全部显示灰 色画面, 因此中间一根 "灰线"亮度最高。 由于第 2行和第 4行中的第 1~4列亚像素单 元只有一半显示灰色画面, 因此, 上下两根"灰线"亮度只有中间 "灰线"的一半。 这样 就可避免亮度变化过于锐利, 使 "灰线"模糊化。
如此以来, 本发明实施例采用图 6所示的显示面板结构, 将每 2n (n=l~50) 个左右 相邻的亚像素单元组成一组, 每组采用 "上下上下"的交错结构与施控的扫描线相接, 使 得横向串扰产生的 "灰线"亮度降低且模糊化, 从而可消除横向串扰现象。
需要说明的是, 本实施例中以 "黑底白框"检测图形来描述消除横向串扰的原理, 本 领域技术人员容易理解, 其原理和改善效果适用于各种 "暗底亮框" 的检测图形。
虽然本发明所公开的实施方式如上,但所述的内容只是为了便于理解本发明而采用的 实施方式, 并非用以限定本发明。任何本发明所属技术领域内的技术人员, 在不脱离本发 明所公开的精神和范围的前提下,可以在实施的形式上及细节上作任何的修改与变化,但 本发明的专利保护范围, 仍须以所附的权利要求书所界定的范围为准。
Claims
1、 一种液晶显示面板, 包括若干条扫描线、 数据线以及亚像素单元阵列, 其中, 在 相邻的第 n条和第 n+1条扫描线之间设置交替排布的第一亚像素组和第二亚像素组, 第 一亚像素组连接至第 n条扫描线, 第二亚像素组连接至第 n+1条扫描线, 以使得同一条 扫描线控制的亚像素单元分布在相邻行中, n为正整数。
2、 如权利要求 1所述的液晶显示面板, 其中, 所述第一亚像素组和第二亚像素组分 别包括并排的 2m个亚像素单元, m为正整数。
3、 如权利要求 2所述的液晶显示面板, 其中, m的取值范围为 l m 50。
4、 如权利要求 1所述的液晶显示面板, 其中, 在同一扫描周期中相邻数据线提供的 数据信号极性相反。
5、 如权利要求 4所述的液晶显示面板, 其中, 在同一帧周期中同一数据线提供的数 据信号极性相同。
6、 一种液晶显示装置, 包括:
液晶显示面板, 其包括若干条扫描线、 数据线以及亚像素单元阵列, 其中, 在相邻的 第 n条和第 n+1条扫描线之间设置交替排布的第一亚像素组和第二亚像素组, 第一亚像 素组连接至第 n条扫描线, 第二亚像素组连接至第 n+1条扫描线, 以使得同一条扫描线 控制的亚像素单元分布在相邻行中, n为正整数;
扫描信号驱动单元,用于向所述扫描线提供一序列扫描脉冲信号, 以分别打开与扫描 线连接的亚像素单元;
数据信号驱动单元, 用于向所述数据线提供数据信号, 以在所述亚像素单元打开时, 向与所述数据线连接的亚像素单元充电。
7、 如权利要求 6所述的液晶显示装置, 其中, 所述装置还包括时序控制器, 其用以 向所述数据信号驱动单元提供极性反转信号,使得在同一行周期中相邻数据线提供的数据
信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
8、 如权利要求 6所述的液晶显示装置, 其中, 所述第一亚像素组和第二亚像素组分 别包括并排的 2m个亚像素单元, m为正整数。
9、 如权利要求 8所述的液晶显示装置, 其中, 所述装置还包括时序控制器, 其用以 向所述数据信号驱动单元提供极性反转信号,使得在同一行周期中相邻数据线提供的数据 信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
10、 如权利要求 8所述的液晶显示装置, 其中, m的取值范围为 l m 50。
11、 如权利要求 10所述的液晶显示装置, 其中, 所述装置还包括时序控制器, 其用 以向所述数据信号驱动单元提供极性反转信号,使得在同一行周期中相邻数据线提供的数 据信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
12、如权利要求 6所述的液晶显示装置, 其中, 在同一扫描周期中相邻数据线提供的 数据信号极性相反。
13、 如权利要求 12所述的液晶显示装置, 其中, 所述装置还包括时序控制器, 其用 以向所述数据信号驱动单元提供极性反转信号,使得在同一行周期中相邻数据线提供的数 据信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
14、 如权利要求 12所述的液晶显示装置, 其中, 在同一帧周期中同一数据线提供的 数据信号极性相同。
15、 如权利要求 14所述的液晶显示装置, 其中, 所述装置还包括时序控制器, 其用 以向所述数据信号驱动单元提供极性反转信号,使得在同一行周期中相邻数据线提供的数 据信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
16、 一种液晶显示装置的驱动方法, 包括以下步骤:
向扫描线提供序列扫描脉冲信号, 以分别打开与扫描线连接的亚像素单元, 其中, 在 相邻的第 n条和第 n+1条扫描线之间设置交替排布的第一亚像素组和第二亚像素组, 第 一亚像素组连接至第 n条扫描线, 第二亚像素组连接至第 n+1条扫描线, 以使得同一条 扫描线控制的亚像素单元分布在相邻行中;
向所述数据线提供数据信号, 以在所述亚像素单元打开时, 向与所述数据线连接的亚 像素单元充电;
其中, 在第 n个行周期中, 所述扫描线打开第 n行亚像素单元中的第一亚像素组, 以 使得所述数据线对其充电; 以及
在第 n+1个行周期中, 所述扫描线打开第 n行亚像素单元中的第二亚像素组, 以使 得所述数据线对其充电。
17、 如权利要求 16所述的驱动方法, 其中, 在同一扫描周期中相邻数据线提供的数 据信号极性相反, 并且在同一帧周期中同一数据线提供的数据信号极性相同。
18、 如权利要求 17所述的驱动方法, 其中, 所述第一亚像素组和第二亚像素组分别 包括并排的 2m个亚像素单元, m为正整数, m的取值范围为 l m 50。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/406,719 US20160267863A1 (en) | 2014-05-30 | 2014-06-26 | Liquid crystal panel, display device and a method for driving the display device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410241110.7 | 2014-05-30 | ||
| CN201410241110.7A CN104035254A (zh) | 2014-05-30 | 2014-05-30 | 一种液晶显示面板、显示装置及其驱动方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015180226A1 true WO2015180226A1 (zh) | 2015-12-03 |
Family
ID=51466078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2014/080804 Ceased WO2015180226A1 (zh) | 2014-05-30 | 2014-06-26 | 一种液晶显示面板、显示装置及其驱动方法 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20160267863A1 (zh) |
| CN (1) | CN104035254A (zh) |
| WO (1) | WO2015180226A1 (zh) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710538A (zh) * | 2015-09-24 | 2017-05-24 | 京东方科技集团股份有限公司 | 阵列基板及其像素驱动方法、显示面板、显示装置 |
| CN106340261A (zh) * | 2016-10-13 | 2017-01-18 | 武汉华星光电技术有限公司 | 阵列基板测试电路及显示面板 |
| US12272281B2 (en) | 2018-04-26 | 2025-04-08 | Beijing Boe Display Technology Co., Ltd. | Self-monitoring method of display and display |
| US11727837B2 (en) | 2018-04-26 | 2023-08-15 | Beijing Boe Display Technology Co., Ltd. | Self-monitoring method of display and display |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006106062A (ja) * | 2004-09-30 | 2006-04-20 | Sharp Corp | アクティブマトリクス型液晶表示装置およびそれに用いる液晶表示パネル |
| CN101216650A (zh) * | 2008-01-14 | 2008-07-09 | 京东方科技集团股份有限公司 | 液晶显示装置阵列基板及驱动方法 |
| US20100134483A1 (en) * | 2006-10-27 | 2010-06-03 | Industrial Technology Research Institute | Driving method thereof |
| CN101950108A (zh) * | 2010-07-28 | 2011-01-19 | 深圳市华星光电技术有限公司 | 液晶显示器 |
| CN202837748U (zh) * | 2012-06-25 | 2013-03-27 | 北京京东方光电科技有限公司 | 一种阵列基板及显示装置 |
| CN103257493A (zh) * | 2012-02-16 | 2013-08-21 | 群康科技(深圳)有限公司 | 液晶显示面板及液晶显示装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6320568B1 (en) * | 1990-12-31 | 2001-11-20 | Kopin Corporation | Control system for display panels |
| CN101216649A (zh) * | 2008-01-10 | 2008-07-09 | 京东方科技集团股份有限公司 | 液晶显示装置阵列基板及驱动方法 |
-
2014
- 2014-05-30 CN CN201410241110.7A patent/CN104035254A/zh active Pending
- 2014-06-26 WO PCT/CN2014/080804 patent/WO2015180226A1/zh not_active Ceased
- 2014-06-26 US US14/406,719 patent/US20160267863A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006106062A (ja) * | 2004-09-30 | 2006-04-20 | Sharp Corp | アクティブマトリクス型液晶表示装置およびそれに用いる液晶表示パネル |
| US20100134483A1 (en) * | 2006-10-27 | 2010-06-03 | Industrial Technology Research Institute | Driving method thereof |
| CN101216650A (zh) * | 2008-01-14 | 2008-07-09 | 京东方科技集团股份有限公司 | 液晶显示装置阵列基板及驱动方法 |
| CN101950108A (zh) * | 2010-07-28 | 2011-01-19 | 深圳市华星光电技术有限公司 | 液晶显示器 |
| CN103257493A (zh) * | 2012-02-16 | 2013-08-21 | 群康科技(深圳)有限公司 | 液晶显示面板及液晶显示装置 |
| CN202837748U (zh) * | 2012-06-25 | 2013-03-27 | 北京京东方光电科技有限公司 | 一种阵列基板及显示装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104035254A (zh) | 2014-09-10 |
| US20160267863A1 (en) | 2016-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101286532B1 (ko) | 액정 표시장치와 그 구동방법 | |
| JP6355182B2 (ja) | Tftアレイ基板 | |
| US20110249046A1 (en) | Liquid crystal display device | |
| US8963912B2 (en) | Display device and display device driving method | |
| CN101923839A (zh) | 显示面板驱动方法、栅极驱动器、以及显示设备 | |
| CN1573459A (zh) | 显示驱动装置和方法及具有该装置的液晶显示设备 | |
| CN101872594B (zh) | 液晶显示设备和驱动液晶显示设备的方法 | |
| WO2016061856A1 (zh) | Tft阵列基板 | |
| WO2016176914A1 (zh) | 基板及其液晶显示装置 | |
| US7079164B2 (en) | Method and apparatus for driving liquid crystal display panel | |
| KR20110114312A (ko) | 횡전계 방식 액정표시장치 및 그 구동방법 | |
| CN101950540B (zh) | 液晶显示装置 | |
| WO2015180226A1 (zh) | 一种液晶显示面板、显示装置及其驱动方法 | |
| TWI415061B (zh) | 電泳顯示器及其驅動方法 | |
| CN101937658B (zh) | 液晶显示设备以及驱动液晶显示设备的方法 | |
| KR20120065754A (ko) | 횡전계형 액정표시장치 및 그 구동방법 | |
| CN101556780A (zh) | 液晶显示器面板 | |
| CN103021362B (zh) | 显示面板的像素驱动方法 | |
| CN106409252A (zh) | 一种阵列基板及其驱动方法、显示面板、显示装置 | |
| US20180157136A1 (en) | An array substrate for improving horizontal bright and dark lines, and liquid cystal display panel | |
| US8605228B2 (en) | Display device and display panel | |
| JP5509179B2 (ja) | 液晶表示装置 | |
| US20180342215A1 (en) | Liquid crystal display device and method for driving the same | |
| KR20180035551A (ko) | 액정표시장치 | |
| CN113674672B (zh) | 显示面板的驱动方法及显示面板 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 14406719 Country of ref document: US |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14893124 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 14893124 Country of ref document: EP Kind code of ref document: A1 |