CN108597428A - Driving voltage adjustment method and liquid crystal display - Google Patents

Driving voltage adjustment method and liquid crystal display Download PDF

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Publication number
CN108597428A
CN108597428A CN201810398745.6A CN201810398745A CN108597428A CN 108597428 A CN108597428 A CN 108597428A CN 201810398745 A CN201810398745 A CN 201810398745A CN 108597428 A CN108597428 A CN 108597428A
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China
Prior art keywords
grayscale
target
voltage
flicker
picture
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海博
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Huizhou China Star Optoelectronics Technology Co Ltd
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Huizhou China Star Optoelectronics Technology Co Ltd
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Priority to CN201810398745.6A priority Critical patent/CN108597428A/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel

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  • 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

The invention discloses a kind of driving voltage adjustment method, this method includes：Pretreatment fluid LCD panel；Display target ties up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image-region and the second image-region, and the target, which ties up a grayscale and ties up a grayscale and second including first, ties up a grayscale；Wherein, the grayscale of all pixels in described first image region is intended pixel grayscale, the grayscale of all pixels of second image-region is that target ties up a grayscale, the target ties up that a grayscale is different from the intended pixel grayscale, and it is that one or more respectively tied up in second image-region in grayscale corresponds to adjustable grayscale that the target, which ties up a grayscale,；The target that the crosstalk detection picture is adjusted based on target common voltage ties up the gray scale voltage of a grayscale.Using the driving voltage adjustment method, the crosstalk phenomenon of liquid crystal display panel can be improved, improve the display effect of liquid crystal display panel.The invention also discloses a kind of liquid crystal displays.

Description

Driving voltage adjustment method and liquid crystal display
Technical field
The present invention relates to display technology field more particularly to a kind of driving voltage adjustment method and liquid crystal displays.
Background technology
In liquid crystal display panel such as Thin Film Transistor-LCD (Thin Film Transistor Liquid Crystal Display, TFT-LCD) use during, often there is crosstalk (Crosstalk) phenomenon, i.e., entire display A part of region on screen can be influenced by another part region and generate picture display distortion.Liquid crystal display panel is caused to produce Caused by raw crosstalk phenomenon is mainly driven by it mode, specifically, liquid crystal display panel is usually using exchange driving The flicker for inhibiting liquid crystal display panel needs the gray scale voltage of adjacent pixel in the liquid crystal display panel to keep polarity opposite. In practical applications, it can realize that liquid crystal display panel reversal mode has very much, for example, dot inversion, column inversion and row are anti- Turn etc. type of drive.
However, when realizing that the gray scale voltage of adjacent pixel keeps polarity opposite using above-mentioned type of drive, such as row are anti- There is crosstalk phenomenon in the mode turned, the black matrix white edge picture (as shown in Figure 1) of the display screen or grey bottom lime picture.For example, There is a concealed wire and a bright line in two pairs of both sides up and down of white edge, as shown in Figure 1；Or occur in two vehicle of the left and right of white edge abnormal Region or abnormal wire, this can cause the display of the picture on display screen abnormal and distortion, so that the picture of liquid crystal display panel Display effect is poor.
Invention content
An embodiment of the present invention provides a kind of driving voltage adjustment method and liquid crystal displays, can improve liquid crystal display panel Crosstalk phenomenon, improve the picture display effect of liquid crystal display panel.
In a first aspect, an embodiment of the present invention provides a kind of driving voltage adjustment method, the driving voltage adjustment method packet It includes：
Pretreatment fluid LCD panel；
Display target ties up the crosstalk detection picture of a grayscale, the crosstalk detection picture include at least the first image-region and Second image-region, the target, which ties up a grayscale and ties up a grayscale and second including first, ties up a grayscale；Wherein, described first image The grayscale of all pixels in region is intended pixel grayscale, and the grayscale of all pixels of second image-region is that target is tied up a little Grayscale, it is different from the intended pixel grayscale that the target ties up a grayscale, and it is second image district that the target, which ties up a grayscale, One or more respectively tied up in domain in grayscale corresponds to adjustable grayscale；
The target that the crosstalk detection picture is adjusted based on target common voltage ties up the gray scale voltage of a grayscale.
Wherein, the pretreatment fluid LCD panel, including：
According to the property parameters of liquid crystal display panel, the gray scale voltage of preset highest grayscale is determined；
By the flicker value of the flicker picture of the highest grayscale adjust to described in during adjusting initial common voltage most The minimum flicker value of the flicker picture of high gray；
The brightness value of the grey menu of the highest grayscale and the brightness value of the grey menu of minimum gray scale are measured, and is counted Calculate the target brightness value for respectively being tied up a grayscale；
Show the grey menu for respectively tying up a grayscale, it is corresponding to adjust the gray scale voltage for respectively tying up a grayscale so that described The brightness value for respectively tying up a grayscale reaches corresponding target brightness value；And
The flicker value of the flicker picture for respectively tying up a grayscale is adjusted to described and respectively ties up the corresponding flicker picture of a grayscale Minimum flicker value.
Wherein, the flicker value of the flicker picture by the highest grayscale is adjusted in the initial common voltage process of adjustment Described in highest grayscale flicker picture minimum flicker value, including：
The gray scale voltage of initial common voltage and the highest grayscale is loaded to show the flicker picture of the highest grayscale Face；
Adjust the initial common voltage, and detect the highest grayscale flicker picture flicker value so that it is described most The flicker value of the flicker picture of high gray meets the first preset condition；
Wherein, the first preset condition of the satisfaction includes at least：By the flicker value tune of the flicker picture of the highest grayscale The whole minimum flicker value to the flicker picture of highest grayscale during adjusting the initial common voltage, or by described in most High gray flicker picture flicker value adjustment to less than or equal to the highest grayscale flicker picture the first flicker value.
Wherein, the corresponding adjustment gray scale voltage for respectively tying up a grayscale is so that the brightness value for respectively tying up a grayscale reaches To corresponding target brightness value, including：
Initial common voltage and the gray scale voltage for respectively tying up a grayscale after load adjustment is to show described respectively tie up a little The grey menu of grayscale；
The positive-negative polarity voltage of the gray scale voltage for respectively tying up a grayscale is adjusted along first direction, so that described respectively tie up a little The brightness value of the grey menu of grayscale is target brightness value；
Wherein, the first direction refers to that the positive polarity voltage for respectively tying up a grayscale increases, reverse voltage reduces Direction or positive polarity voltage reduction, the increased direction of reverse voltage.
Wherein, the target that the crosstalk detection picture is adjusted based on target common voltage ties up the grayscale electricity of a grayscale Pressure, including：
The target that the crosstalk detection picture is adjusted based on target common voltage ties up the gray scale voltage of a grayscale, packet It includes：
Keep target common voltage constant；
The positive-negative polarity voltage that the target of the crosstalk detection picture is tied up to the gray scale voltage of grayscale is adjusted in a second direction It is whole to adjust the crossfire value of the crosstalk detection picture；Wherein, the crossfire value of the adjustment crosstalk picture includes：It will be described The crossfire value of crosstalk detection picture is adjusted to be less than or equal to default crossfire value, or by the crossfire value of the crosstalk detection picture It is adjusted to tie up the target into the positive-negative polarity voltage minimum string in moving process in a second direction of the gray scale voltage of grayscale Value is disturbed, or the crossfire value of the crosstalk detection picture is adjusted to default crossfire value；
Wherein, the second direction refers to respectively tying up the positive polarity voltage increase of a grayscale, the increased direction of reverse voltage.
Wherein, the target that the crosstalk detection picture is adjusted based on target common voltage ties up the grayscale electricity of a grayscale It presses, further includes：
Judge whether the crossfire value of the crosstalk detection picture reduces；
When the crossfire value of the crosstalk detection picture does not reduce, then the target is being tied up into the gray scale voltage of grayscale just Reverse voltage is moved along third direction to adjust the crossfire value of the crosstalk detection picture；Wherein, the adjustment crosstalk Detection picture crossfire value include：The crossfire value of the crosstalk detection picture is adjusted to be less than or equal to default crossfire value, or The crossfire value of the crosstalk detection picture is adjusted to tie up the target into the positive-negative polarity voltage of the gray scale voltage of grayscale by person Minimum crossfire value in third direction moving process, or the crossfire value of the crosstalk detection picture is adjusted to default crosstalk Value；
Wherein, the third direction refers to the positive polarity voltage reduction for respectively tying up a grayscale, the direction that reverse voltage reduces.
Wherein, the target common voltage includes the first common voltage and the second common voltage, described public based on target The target that voltage adjusts the crosstalk detection picture ties up the gray scale voltage of a grayscale, including：
The target tie up a grayscale be first tie up grayscale when, the crosstalk inspection is adjusted based on first common voltage Survey the first of the picture gray scale voltage for tying up a grayscale；
The target tie up a grayscale be second tie up grayscale when, be based on the first common voltage of the second common voltage tune The first of the whole crosstalk detection picture ties up the gray scale voltage of a grayscale；
When adjust the crosstalk detection picture for the first time first ties up the gray scale voltage of a grayscale, first common voltage For the initial common voltage after adjustment；The first of the crosstalk detection picture gray scale voltage for tying up a grayscale is adjusted for the first time non- When, first common voltage be it is upper once adjust the first of the crosstalk detection picture and tie up the gray scale voltage of a grayscale when, It is obtained after the flicker value for the flicker picture that described first ties up a grayscale is turned down；
Second common voltage is to adjust the first of the crosstalk detection picture gray scale voltage for tying up a grayscale at this When, it is obtained after the flicker value for the flicker picture that described first ties up a grayscale is turned down.
Wherein, the driving voltage adjustment method further includes：
Display target ties up the flicker picture of a grayscale, and obtains the flicker value that the target ties up the flicker picture of a grayscale；
The target common voltage is adjusted, the flicker value that the target is tied up to the flicker picture of grayscale is adjusted to adjust Minimum flicker value during the target common voltage.
Wherein, the target is tied up the flicker value of the flicker picture of a grayscale by the adjustment target common voltage After being adjusted to adjust the minimum flicker value during the target common voltage, the driving voltage adjustment method further includes：
Display target ties up the grey menu of a grayscale, and measures the brightness value that the target ties up the grey menu of a grayscale；
Judge the target to tie up the brightness value of the grey menu of a grayscale whether in the target to tie up a grayscale corresponding pre- If in brightness range；
When the target ties up the brightness value of the grey menu of a grayscale, not tie up a grayscale in the target corresponding default bright When spending in range, the positive-negative polarity voltage that the target is tied up to the gray scale voltage of grayscale is adjusted along first direction, so that described The brightness value that target ties up the grey menu of a grayscale is tied up in the target in the corresponding predetermined luminance range of a grayscale.
Second aspect, the embodiment of the invention discloses a kind of liquid crystal display, including liquid crystal display panel and with the liquid The driving device that LCD panel is electrically connected, the driving device is for driving the liquid crystal display panel, the driving device Including pretreatment circuit, display circuit and gray scale voltage adjustment circuit, the display circuit respectively with the pretreatment circuit with And the gray scale voltage adjustment circuit is electrically connected；The pretreatment circuit pre-processes the liquid crystal display panel, the display Liquid crystal display panel display target described in circuit drives ties up the crosstalk detection picture of a grayscale, and the crosstalk detection picture at least wraps Include the first image-region and the second image-region, the target, which ties up a grayscale and ties up a grayscale and second including first, ties up a grayscale； Wherein, the grayscale of all pixels in described first image region is intended pixel grayscale, all pictures of second image-region The grayscale of element is that target ties up a grayscale, and the target ties up that a grayscale is different from the intended pixel grayscale, and the target ties up an ash Rank is that one or more respectively tied up in second image-region in grayscale corresponds to adjustable grayscale；The gray scale voltage tune The target that whole circuit adjusts the crosstalk detection picture based on target common voltage ties up the gray scale voltage of a grayscale.
In conclusion in the embodiment of the present invention, liquid crystal display panel can show crosstalk detection picture, and can be based on mesh The crosstalk that mark common voltage adjusts the gray scale voltage of the target gray scale of the crosstalk detection picture to mitigate the crosstalk detection picture is existing As to improve the display effect of liquid crystal display panel.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description Attached drawing is briefly described, it should be apparent that, drawings in the following description are some embodiments of the invention, general for this field For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is that in the prior art the schematic diagram of crosstalk phenomenon occur in black matrix white edge picture using when column inversion.
Fig. 2 is a kind of flow diagram of driving voltage adjustment method provided in an embodiment of the present invention.
Fig. 3 is a kind of schematic diagram of crosstalk detection picture provided in an embodiment of the present invention.
Fig. 4 is a kind of waveform diagram adjusting crosstalk using gray scale voltage provided in an embodiment of the present invention.
Fig. 5 is another waveform diagram using gray scale voltage adjustment crosstalk provided in an embodiment of the present invention.
Fig. 6 is the flow diagram of another driving voltage adjustment method provided in an embodiment of the present invention.
Fig. 7 is a kind of waveform diagram using common voltage adjustment flicker that the embodiment of the present invention is provided based on Fig. 4.
Fig. 8 is a kind of waveform diagram using common voltage adjustment flicker that the embodiment of the present invention is provided based on Fig. 5.
Fig. 9 is a kind of waveform diagram adjusting brightness using gray scale voltage that the embodiment of the present invention is provided based on Fig. 7.
Figure 10 is that the embodiment of the present invention is illustrated based on the another kind that Fig. 7 is provided using the waveform of gray scale voltage adjustment brightness Figure.
Figure 11 is the flow diagram of another driving voltage adjustment method provided in an embodiment of the present invention.
Figure 12 is a kind of electrical block diagram of liquid crystal display provided in an embodiment of the present invention.
Specific implementation mode
Below in conjunction with the attached drawing in embodiment of the present invention, the technical solution in embodiment of the present invention is retouched It states.Obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, those of ordinary skill in the art are obtained every other without making creative work Embodiment should all belong to the scope of protection of the invention.
Term " first ", " second ", " third " " in description and claims of this specification and above-mentioned attached drawing The (if present)s such as four " are for distinguishing similar object, without being used to describe specific sequence or precedence.It should manage The data that solution uses in this way can be interchanged in the appropriate case, so that the embodiment of the present invention described herein for example can be to remove Sequence other than those of illustrating or describe herein is implemented.In addition, term " comprising " and " having " and theirs is any Deformation, it is intended that cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, production Product or equipment those of are not necessarily limited to clearly to list step or unit, but may include not listing clearly or for this The intrinsic other steps of processes, method, product or equipment or unit a bit.
In addition, the explanation of following embodiment is referred to the additional illustration, to illustrate the spy that the present invention can be used to implement Determine embodiment.Direction terms mentioned in the present invention, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "outside", " side " etc. are only the directions with reference to annexed drawings, and therefore, the direction term used is to more preferably, more clearly say It is bright and understand the present invention, rather than indicate or imply signified device or element must have a particular orientation, with specific side Position construction and operation, therefore be not considered as limiting the invention.In the description of the present invention, it should be noted that unless Another to have specific regulation and limit, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixed connect It connects, can also be detachably connected, or be integrally connected；It can be mechanical connection；It can be directly connected, can also lead to It crosses intermediary to be indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be with Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.If this The term for occurring " process " in specification, refers not only to independent process, when can not clearly be distinguished with other process, as long as It can realize that the effect desired by the process is then also included in this term.In addition, the numerical value indicated with "~" in this specification Range refers to the range that "~" front and back numerical value recorded is included as minimum value and maximum value.In the accompanying drawings, it ties The similar or identical unit of structure is indicated by the same numeral.
Since liquid crystal display panel is usually using exchange driving, in order to inhibit the flicker of liquid crystal display panel, need The gray scale voltage of adjacent pixel keeps polarity on the contrary, therefore, liquid crystal display panel generally use point is anti-in the liquid crystal display panel Turn, column inversion, the type of drive such as reversion of going realize that the gray scale voltage of adjacent pixel in liquid crystal display panel keeps polarity opposite.So And when using above-mentioned type of drive, the picture on the liquid crystal display panel is susceptible to crosstalk (Crosstalk) phenomenon, leads Cause the picture display on display screen abnormal and distortion, so that the picture display effect of liquid crystal display panel is poor.Therefore, originally Invention provides a kind of driving voltage adjustment method and liquid crystal display, can tie up a grayscale by adjust crosstalk detection picture Gray scale voltage mitigate the crosstalk phenomenon of the liquid crystal display panel, to improving the display effect of the liquid crystal display panel.
Below in conjunction with embodiment of the method shown in Fig. 2, Fig. 6 and Figure 11 to driving voltage debugging side provided by the present invention Method is described in detail.
Referring to Fig. 2, being a kind of flow diagram of driving voltage adjustment method provided in an embodiment of the present invention.Specifically Ground, the driving voltage adjustment method at least may comprise steps of：
S101, pretreatment fluid LCD panel.
In one embodiment of the invention, the pretreatment fluid LCD panel at least may include：
Step 1, the property parameters according to the liquid crystal display panel determine the gray scale voltage of preset highest grayscale；Its In, the property parameters include the penetrance etc. of liquid crystal display panel；
The flicker value of the flicker picture of the highest grayscale is adjusted to during adjusting initial common voltage and is somebody's turn to do by step 2 The minimum flicker value of the flicker picture of highest grayscale；
Step 3, measure the highest grayscale grey menu brightness value and minimum gray scale grey menu brightness value, And the target brightness value for respectively tying up a grayscale is calculated；
Step 4 shows that this respectively ties up the grey menu of a grayscale, corresponding to adjust the gray scale voltage for respectively tying up a grayscale so that The brightness value for respectively tying up a grayscale reaches corresponding target brightness value；
Step 5, the flicker value for the flicker picture that this is respectively tied up to grayscale adjust to this and respectively tie up the corresponding flicker picture of a grayscale The minimum flicker value in face.
In another embodiment, which can also be：The flicker value of the flicker picture of highest grayscale is adjusted to small In or equal to highest grayscale corresponding first flicker value of flicker picture.
In one embodiment, the adjustment mode which uses can be for：Load initial common voltage and the highest The gray scale voltage of grayscale is to show the flicker picture of highest grayscale；The initial common voltage is adjusted, and detects the highest grayscale The flicker value of picture is flickered, so that the flicker value of the flicker picture of the highest grayscale meets the first preset condition.Wherein, the satisfaction First preset condition includes at least：The flicker value of the flicker picture of the highest grayscale is adjusted in the adjustment initial common voltage In the process the highest grayscale flicker picture minimum flicker value, or by the flicker value of the flicker picture of the highest grayscale adjust to Less than or equal to the first flicker value of the flicker picture of the highest grayscale.
In one embodiment, the adjustment initial common voltage, and detect the flicker of the flicker picture of the highest grayscale Value, so that flicker value the first preset condition of satisfaction of the flicker picture of the highest grayscale, at least may include：In predeterminated voltage Increase the initial common voltage in range, judges whether the flicker value of the flicker picture of the highest grayscale reduces；When highest ash When the flicker value of the flicker picture of rank reduces, then continue to increase the initial common voltage in predetermined voltage range until the highest The flicker value of the flicker picture of grayscale meets the first preset condition；When the flicker value of the flicker picture of the highest grayscale does not reduce When, then reduce the initial common voltage in the predetermined voltage range and is preset until the flicker picture of the highest grayscale meets first Condition.
For example, first flicker value is F1, during adjusting initial common voltage, the flicker value of the highest grayscale It can change, therefore as the flicker value F for the flicker picture for detecting the highest grayscale2Less than or equal to F1When, then it can be with Determine that the flicker value of the flicker picture of the highest grayscale meets the first preset condition.For another example, the initial common voltage is being adjusted In the process, the flicker value for obtaining the highest grayscale changes between default flicker value section, then can be by the highest grayscale When the flicker value of flicker picture is adjusted to the minimum flicker value in the default flicker value section, the flicker of the highest grayscale is determined The flicker value of picture meets the first preset condition.
In the case where the flicker value of the flicker picture of the highest grayscale meets the first preset condition, after being adjusted Initial common voltage.
In one embodiment, corresponding adjustment respectively ties up the gray scale voltage of a grayscale so as to respectively tie up the bright of a grayscale in step 4 Angle value reaches corresponding target brightness value, may include：It loads the initial common voltage after adjustment and this respectively ties up a grayscale Gray scale voltage respectively ties up the grey menu of a grayscale to show；This is respectively tied up to the positive-negative polarity voltage of the gray scale voltage of grayscale along One direction adjusts, so that the brightness value of the grey menu for respectively tying up a grayscale is target brightness value.Wherein, which refers to Respectively tie up the positive polarity voltage increase of a grayscale, the direction that reverse voltage reduces or positive polarity voltage reduction, reverse voltage Increased direction.
In another embodiment, step 5 can also be：This is respectively tied up the flicker picture of a grayscale flicker value adjust to Corresponding second flicker value of flicker picture of a grayscale is respectively tied up less than or equal to this.
In one embodiment, the adjustment mode that step 5 uses can be for：Show that this respectively ties up the flicker picture of a grayscale； The positive-negative polarity voltage that this is respectively tied up to the gray scale voltage of grayscale adjusts in a second direction or third direction adjustment, so that this is each The flicker value for binding the flicker picture of grayscale meets the second preset condition, which includes at least：Adjustment should The flicker value for respectively tying up the flicker picture of a grayscale be this respectively tie up a grayscale flicker picture minimum flicker value, or to adjust this each The flicker value for tying up the flicker picture of a grayscale is less than or equal to corresponding second flicker value of flicker picture for respectively tying up a grayscale.Its In, which refers to respectively tying up the positive polarity voltage increase of a grayscale, the increased direction of reverse voltage；The third direction is Refer to the positive polarity voltage reduction for respectively tying up a grayscale, the direction that reverse voltage reduces.
In one implementation of the present invention, it is loaded into this when being switched to the crosstalk detection picture for respectively tying up a grayscale for the first time and respectively ties up a little The corresponding gray scale voltage of grayscale can will respectively tie up the flicker value adjustment of the flicker picture of a grayscale to less than or equal to respectively tying up It is obtained after corresponding second flicker value of flicker picture of point grayscale, or will respectively tie up the flicker of the flicker picture of a grayscale What value obtained after adjusting to the minimum flicker value for respectively tying up the corresponding flicker picture of a grayscale.
Wherein, the step of pretreatment fluid LCD panel can also include：An ash is tied up according to close to minimum gray scale The gray scale voltage of rank extrapolates the gray scale voltage of the minimum gray scale.
After the step of executing above-mentioned pretreatment fluid LCD panel, which can be switched to and respectively be tied up a little The crosstalk detection picture of grayscale ties up the gray scale voltage of a grayscale to improve the crosstalk detection picture for respectively tying up a grayscale by adjusting this Crosstalk phenomenon.
S102, display target tie up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image Region and the second image-region.
It should be noted that the grayscale of all pixels of first image-region is defined as intended pixel grayscale, this is predetermined Pixel gray level can be preset highest grayscale, such as 255 grayscale.The grayscale of all pixels of second image-region is defined as mesh Mark ties up a grayscale, and it is different from the intended pixel grayscale which ties up a grayscale.It is described tie up a grayscale refer to it is right in driving chip Answer adjustable grayscale.Wherein, it can be preset minimum gray scale (such as 0 grayscale) extremely preset highest grayscale which, which ties up a grayscale, Between grayscale, such as 16 grayscale, 31 grayscale, 127 grayscale, 223 grayscale.It can be the second image-region that the target, which ties up a grayscale, In respectively tie up an adjustable grayscale of correspondence or the adjustable grayscale of multiple correspondences in a grayscale.
Referring to Fig. 3, being a kind of schematic diagram of crosstalk detection picture provided by the invention.The crosstalk detection picture is grey bottom White edge image.Wherein, which is located at the central area of the crosstalk detection picture, which owns The grayscale of pixel is 255 grayscale.Second image-region is other in addition to the first image-region of the crosstalk detection picture Region, in embodiments of the present invention, the grayscale of all pixels of second image-region can be 127 grayscale.
Wherein, the signified crosstalk detection picture of the present invention includes but not limited to crosstalk detection picture as shown in Figure 3.And And the present invention is not limited the number and shape of the image-region of setting.
S103, the target that the crosstalk detection picture is adjusted based on target common voltage tie up the gray scale voltage of a grayscale.
It should be noted that the target ties up a grayscale and ties up a grayscale and second including first and ties up a grayscale.This first is tied up a little Grayscale can be intermediate grayscale, and second to tie up a grayscale can be that other other than the intermediate grayscale tie up a grayscale for this.
In one embodiment of the present of invention, which may include the first common voltage and the second common electrical Pressure, the target that the crosstalk detection picture should be adjusted based on target common voltage are tied up the gray scale voltage of a grayscale, may include：At this It is first when tying up grayscale that target, which ties up a grayscale, and first crosstalk detection for tying up a grayscale can be adjusted based on the first common voltage The first of picture ties up the gray scale voltage of a grayscale；The target tie up a grayscale be second tie up grayscale when, it is public that second can be based on Common voltage adjust this second tie up a grayscale crosstalk detection picture the second gray scale voltage for tying up a grayscale.
Wherein, when adjust the crosstalk detection picture for the first time first ties up the gray scale voltage of a grayscale, then this is first public Voltage can be the initial common voltage after adjustment.The first of the crosstalk detection picture grayscale for tying up a grayscale is adjusted for the first time non- When voltage, first common voltage be it is upper once adjust the first of the crosstalk detection picture and tie up the gray scale voltage of a grayscale when, It is obtained after the flicker value of the first flicker picture for tying up a grayscale is turned down.Second common voltage is to adjust the string at this The first of detection picture is disturbed when tying up the gray scale voltage of a grayscale, after the flicker value of the first flicker picture for tying up a grayscale is turned down It obtains.
In one embodiment, the target that the crosstalk detection picture is adjusted based on target common voltage in step S103 The gray scale voltage for tying up a grayscale may include：Keep target common voltage constant；The target of the crosstalk detection picture is tied up into an ash The positive-negative polarity voltage of the gray scale voltage of rank adjusts in a second direction；When the crosstalk detection picture crossfire value reduce when, then after What continuous execution adjusted the positive-negative polarity voltage for the gray scale voltage that the target of the crosstalk detection picture ties up a grayscale in a second direction The crossfire value of the crosstalk detection picture is adjusted to be less than or equal to default crossfire value, or the crosstalk detection is drawn by step The crossfire value in face is adjusted to tie up the target into the positive-negative polarity voltage in a second direction in moving process of the gray scale voltage of grayscale Minimum crossfire value, or the crossfire value of the crosstalk detection picture can be adjusted to default crossfire value.
It should be noted that the crossfire value can be a number of the crosstalk phenomenon for weighing the liquid crystal display panel According to or index, the present invention it is not limited.
In one embodiment, the target of the crosstalk detection picture is tied up to the positive-negative polarity voltage of the gray scale voltage of grayscale It adjusts, can specifically include in a second direction：The positive polarity voltage that the target is tied up to grayscale increases first voltage increment, and same When the target tied up to the reverse voltage of grayscale also increase first voltage increment.Below will by taking Fig. 4 and Fig. 5 as an example, tell about as What adjusts the positive-negative polarity voltage for the gray scale voltage that the target of the crosstalk detection picture ties up a grayscale in a second direction.
Referring to Fig. 4, for a kind of waveform diagram adjusting crosstalk using gray scale voltage provided in an embodiment of the present invention.Figure It is x grayscale (one between 0-255 grayscale is tied up a grayscale), gray scale voltage V that target shown in 4, which ties up a grayscale,x(including Positive polarity voltage and reverse voltage), target common voltage is Vcom1.By the gray scale voltage V of x grayscalexAlong second direction tune In whole process, the positive polarity voltage of x grayscale can be made to increase △ Vx, reverse voltage also increases △ Vx.Wherein, N indicates the N frame crosstalk detection pictures.N+1 indicates that (N+1) frame crosstalk detection picture, N+2 indicate (N+2) frame crosstalk detection picture.
In an embodiment of the invention, the crosstalk detection picture is adjusted based on target common voltage in step S103 Target ties up the gray scale voltage of a grayscale, can also include：Judge whether the crossfire value of the crosstalk detection picture reduces；When the crosstalk When the crossfire value of detection picture does not reduce, then the target is tied up to the positive-negative polarity voltage of the gray scale voltage of grayscale along the third party To movement, the crossfire value of the crosstalk detection picture is adjusted to be less than or equal to default crossfire value, or by the crosstalk detection The crossfire value of picture be adjusted to by the target tie up a grayscale gray scale voltage positive-negative polarity voltage along third direction moving process In minimum crossfire value, or the crossfire value of the crosstalk detection picture is adjusted to default crossfire value.
In an embodiment of the invention, the positive-negative polarity voltage of the gray scale voltage which is tied up to grayscale along this Three directions are moved, and are specifically as follows：The positive polarity voltage that the target is tied up to grayscale reduces first voltage increment, and simultaneously should The reverse voltage that target ties up a grayscale also reduces first voltage increment.It will teach how to examine the crosstalk by taking Fig. 5 as an example below The positive-negative polarity voltage for the gray scale voltage that the target for surveying picture ties up a grayscale is adjusted along third direction.
Referring to Fig. 5, for another waveform diagram for adjusting crosstalk using gray scale voltage provided in an embodiment of the present invention. It is x grayscale, gray scale voltage V that target shown in fig. 5, which ties up a grayscale,x(including positive polarity voltage and reverse voltage), mesh Mark common voltage is Vcom1.By the gray scale voltage V of x grayscalexIt is adjusted along third direction, can make the positive polarity voltage of x grayscale Reduce △ Vx, reverse voltage also reduces △ Vx。
In another embodiment of the invention, can first adjust this first tie up the crosstalk detection picture of a grayscale after, then according to The secondary adjustment second crosstalk detection picture for tying up a grayscale.It specifically may refer to embodiment as shown in figure 11.
As it can be seen that in present invention embodiment shown in Fig. 2, the liquid crystal display panel can show crosstalk detection picture, And the gray scale voltage of the target gray scale of the crosstalk detection picture can be adjusted based on target common voltage, to mitigate the crosstalk detection The crosstalk phenomenon of picture, to improve the display effect of liquid crystal display panel.
Referring to Fig. 6, Fig. 6 is the flow reality schematic diagram of another driving voltage adjustment method provided in an embodiment of the present invention. Specifically.The driving voltage adjustment method at least may comprise steps of：
S201, pretreatment fluid LCD panel.
S202, display target tie up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image Region and the second image-region.
S203, the target that the crosstalk detection picture is adjusted based on target common voltage tie up the gray scale voltage of a grayscale.
It should be noted that step S201-S203 can be found in the step S101-S103 of embodiment illustrated in fig. 2, the present invention is real Applying example, this will not be repeated here.
S204, display target tie up the flicker picture of a grayscale, and obtain the sudden strain of a muscle that the target ties up the flicker picture of a grayscale Bright value.
S205, the adjustment target common voltage, the flicker value that the target is tied up to the flicker picture of grayscale adjust For the minimum flicker value for adjusting during the target common voltage.
In step S204-S205, after the flicker picture that the crosstalk detection screen switching is tied up to grayscale to the target, Can by adjusting the target common voltage of the liquid crystal display panel come adjust the target tie up a grayscale flicker picture flicker Value.For example, the target common voltage can be made to increase second voltage increment in predetermined voltage range, or it can make this Target common voltage reduces second voltage increment in predetermined voltage range, which is tied up to the sudden strain of a muscle of the flicker picture of grayscale Bright value is adjusted to the minimum flicker value obtained during adjusting the target common voltage.To have by taking Fig. 7 and Fig. 8 as an example below How body description adjusts the target common voltage.
Referring to Fig. 7, being shown based on a kind of waveform using common voltage adjustment flicker that Fig. 4 is provided for the embodiment of the present invention It is intended to.Wherein, it can be seen from figure 7 that the positive-negative polarity voltage of the gray scale voltage of x grayscale is increased △ VxMitigate x ashes After the crosstalk phenomenon of the crosstalk detection picture of rank, target common voltage is increased into △ Vcom1So that the flicker picture of the x grayscale Flicker value is the minimum flicker value obtained during adjusting the target common voltage.Wherein, the target after the adjustment is public Value (the V of voltagecom1+△Vcom1) can be that the target ties up centre between the positive polarity voltage and reverse voltage of a grayscale Value can also be worth to be abutted close to one between the median, or can also be other values.In one embodiment, According to the size of the flicker value of the flicker picture of the actually detected x grayscale arrived, the target common voltage can also be made to reduce Vcom1。
Referring to Fig. 8, being shown based on a kind of waveform using common voltage adjustment flicker that Fig. 5 is provided for the embodiment of the present invention It is intended to.Wherein, as can be seen from Figure 8, the positive-negative polarity voltage of the gray scale voltage of x grayscale is being reduced into △ VxMitigate x ashes After the crosstalk phenomenon of the crosstalk detection picture of rank, target common voltage can also be reduced △ Vcom1So that the flicker of the x grayscale The flicker value of picture is the minimum flicker value obtained during adjusting the target common voltage.Wherein, after the adjustment Value (the V of target common voltagecom1-△Vcom1) can be the target tie up the positive polarity voltage of a grayscale and reverse voltage it Between median, can also be close to one between the median adjacent value, or can also be other values.In a reality It applies in example, according to the size of the flicker value of the flicker picture of the actually detected x grayscale arrived, the target common electrical can also be made Pressure increases Vcom1。
It should be noted that the method for adjusting common voltage of meaning of the embodiment of the present invention includes but not limited to Fig. 7 and Fig. 8 institutes The method for adjusting common voltage shown can also be that the gray scale voltage that other targets for after variation tie up a grayscale is corresponding public Voltage adjusting method.
In one embodiment, the target common voltage is adjusted, the flicker picture in addition to the target can be tied up to grayscale Flicker value be adjusted to adjust except the minimum flicker value during the target common voltage, which can also be tied up to a grayscale Flicker picture flicker value be adjusted to be less than or equal to the target tie up a grayscale flicker picture the second flicker value.
S206, display target tie up the grey menu of a grayscale, and measure the target tie up a grayscale grey menu it is bright Angle value.
S207, judge that the target ties up the brightness value of the grey menu of a grayscale and whether ties up grayscale in the target and correspond to Predetermined luminance range in.
It, can be by the liquid crystal after the target common voltage for adjusting the liquid crystal display panel in the embodiment of the present invention Show that panel ties up the grey menu that the flicker screen switching of a grayscale ties up to the target grayscale from the target, is tied up with measuring the target The brightness value of point grayscale.
Wherein, the brightness value of picture shown by the liquid crystal display panel includes but not limited to pass through brightness sensing device (such as Photoelectric sensor) detect obtained brightness value.For example, the liquid crystal display panel can measure 127 ashes by brightness sensing device The brightness value of rank picture.
It should be noted that liquid crystal display panel can show the grey menu of highest grayscale to measure the highest grayscale First brightness value can also show the grey menu of minimum gray scale to measure the second brightness value of the minimum gray scale.Respectively tie up an ash The target brightness value of rank can be calculated by following formula：
(Lx-Lmin)/(Lmax-Lmin)=(x/Gmax)γ
Wherein, LminFirst brightness value of the grey menu of the minimum gray scale shown for liquid crystal display panel, such as 0 grayscale are drawn The brightness in face.LmaxSecond brightness value of the grey menu of the highest grayscale shown for liquid crystal display panel, such as 255 grey menus Brightness.GmaxFor highest grayscale, such as 255 grayscale.The γ is the standard gamma value of the liquid crystal display panel, such as 2.2.Wherein 0<x <255, the x arbitrary grayscale (such as target ties up a grayscale) between highest grayscale and minimum gray scale, x is integer, LxFor with x grayscale Corresponding target brightness value.
In one embodiment, which can be a range, such as 2.0-2.4, therefore the corresponding brightness for respectively tying up a grayscale Value can also be there are one brightness range.I.e. target bandage grayscale can also be correspondingly arranged predetermined luminance range by this way.
S208, when the target ties up the brightness value of the grey menu of a grayscale, not tie up a grayscale in the target corresponding pre- If when in brightness range, the positive-negative polarity voltage that the target is tied up to the gray scale voltage of grayscale is adjusted along first direction, so that The brightness value that the target ties up the grey menu of a grayscale is tied up in the target in the corresponding predetermined luminance range of a grayscale.
Wherein, which refers to the direction or positive polarity voltage that positive polarity voltage increases, reverse voltage reduces Reduce, the increased direction of reverse voltage.The grayscale how target is tied up to grayscale is illustrated with reference to Fig. 9 and Figure 10 The positive-negative polarity voltage of voltage is adjusted along first direction.It is understood that it includes multiple tie up to tie up a grayscale when the target When point grayscale, for example, first ties up a grayscale, second ties up grayscale etc., it is multiple to tie up a grayscale successively according to above-mentioned steps 202- Its crosstalk, flicker and brightness is adjusted in 208 adjustment sequence.For example, adjusting first first, in accordance with step 202-208 ties up an ash Crosstalk, flicker and the brightness of rank adjust the second crosstalk, flicker and brightness for tying up a grayscale according still further to step 202-208 later, with This analogizes, and tying up multiple grayscale of tying up that a grayscale includes until the target adjusts completion.
Referring to Fig. 9, being shown based on a kind of waveform adjusting brightness using gray scale voltage that Fig. 7 is provided for the embodiment of the present invention It is intended to.It can be seen in figure 9 that the flicker value of the flicker picture of the x grayscale is adjusted to public in the adjustment target The minimum flicker value obtained in voltage course, obtained target common voltage are (Vcom1+△Vcom1) after, it can also be by x grayscale The positive polarity voltage of gray scale voltage increases △ V, and reverse voltage reduces △ V so that the brightness value of the grey menu of the x grayscale is in x In the corresponding predetermined luminance range of grayscale.In one embodiment, according to the bright of the grey menu of the actually detected x grayscale arrived The size of angle value, can also make the positive polarity voltage of the x grayscale reduce △ V, and reverse voltage increases △ V.
Referring to Fig. 10, the wave of gray scale voltage adjustment brightness is utilized based on the another kind that Fig. 7 is provided for the embodiment of the present invention Shape schematic diagram.It can be seen from fig. 10 that the flicker value of the flicker picture of the x grayscale is adjusted to adjust target public affairs The minimum flicker value obtained during common voltage, obtained target common voltage are (Vcom1-△Vcom1) after, it can also be by x grayscale Gray scale voltage positive polarity voltage reduce △ V, reverse voltage increase △ V so that the grey menu of the x grayscale brightness value In the corresponding predetermined luminance range of x grayscale.In one embodiment, according to the grey menu of the actually detected x grayscale arrived Brightness value size, the positive polarity voltage of the x grayscale can also be made to increase △ V, reverse voltage reduces △ V.
In one embodiment, the target is adjusted in the brightness value for the grey menu that the target is tied up to grayscale to tie up After in the corresponding predetermined luminance range of point grayscale, step S202-S208 can be repeated, with to the liquid crystal display panel Crosstalk phenomenon is finely adjusted.
As it can be seen that in embodiment shown in fig. 6, the gray scale voltage of a grayscale is tied up by the liquid crystal display panel by adjusting target Crosstalk phenomenon improve after, further can adjust the flicker picture that the target ties up a grayscale by adjusting target common voltage Scintillation.After having adjusted scintillation, the brightness that the target ties up the grey menu of a grayscale can be further adjusted, is made Its brightness is up to specification, so as to improve the display effect of the liquid crystal display panel.
1 is please referred to Fig.1, for the flow diagram of another driving voltage adjustment method provided in an embodiment of the present invention, tool Body, which may comprise steps of：
S301, pretreatment fluid LCD panel.
S302, display first tie up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image Region and the second image-region.
It should be noted that this first to tie up a grayscale can be intermediate grayscale, other other than the intermediate grayscale tie up Point grayscale can be that second tie up a grayscale, and in embodiments of the present invention, this first ties up a grayscale and this second is tied up a grayscale and can claim A grayscale is tied up for target.
S303, it adjusts the first of the crosstalk detection picture that described first ties up a grayscale based on the first common voltage and ties up a grayscale Gray scale voltage.
The flicker picture of a grayscale is tied up in S304, display first, and obtains the sudden strain of a muscle for the flicker picture that described first ties up a grayscale Bright value.
S305, adjustment first common voltage adjust the flicker value for the flicker picture that described first ties up a grayscale For the minimum flicker value for adjusting during first common voltage.
The embodiment of the present invention, step S301-S305 may refer to the step S201-S205 of embodiment illustrated in fig. 6, the present invention This will not be repeated here for embodiment.
S306, display second tie up the crosstalk detection picture of a grayscale.
S307, it adjusts the second of the crosstalk detection picture that described second ties up a grayscale based on the second common voltage and ties up a grayscale Gray scale voltage.
In the embodiment of the present invention, which is that this adjusts the first crosstalk detection picture for tying up a grayscale First when tying up the gray scale voltage of a grayscale, is obtained after the flicker value of the first flicker picture for tying up a grayscale is turned down.
For step S306-S307, the step S102-S103 of embodiment illustrated in fig. 2 is may refer to, the embodiment of the present invention exists This is not repeated.
S308, display target tie up the grey menu of a grayscale, and measure the target tie up a grayscale grey menu it is bright Angle value.
S309, judge that the target ties up the brightness value of the grey menu of a grayscale and whether ties up grayscale in the target and correspond to Predetermined luminance range in.
S310, when the target ties up the brightness value of the grey menu of a grayscale, not tie up a grayscale in the target corresponding pre- If when in brightness range, the positive-negative polarity voltage that the target is tied up to the gray scale voltage of grayscale is adjusted along first direction, so that The brightness value that the target ties up the grey menu of a grayscale is tied up in the target in the corresponding predetermined luminance range of a grayscale.
In the embodiment of the present invention, the step S206-S208 in Fig. 6 embodiments may refer to for step S308-S310, this This will not be repeated here for inventive embodiments.
In one embodiment, the target is adjusted in the brightness value for the grey menu that the target is tied up to grayscale to tie up After in the corresponding predetermined luminance range of point grayscale, the step of step S302-S310 can be repeated, to realize to liquid crystal The fine tuning for showing the crosstalk phenomenon of panel, to make the display effect of the liquid crystal display panel reach best.
As it can be seen that in the embodiment shown in fig. 11, the gray scale voltage of a grayscale is tied up by the liquid crystal display by adjusting first After the crosstalk phenomenon of panel improves, further first flicker for tying up a grayscale can be adjusted by adjusting target common voltage The scintillation of picture.After having adjusted scintillation, the second crosstalk detection picture for tying up a grayscale can be further displayed, and The gray scale voltage for tying up a grayscale by adjusting first adjusts after the crosstalk phenomenon improvement of the liquid crystal display panel target and ties up an ash The brightness of the grey menu of rank keeps the corresponding brightness for tying up a grayscale up to specification, so as to improve the display of the liquid crystal display panel Effect.
2 are please referred to Fig.1, is a kind of electrical block diagram of liquid crystal display provided in an embodiment of the present invention.Wherein, institute Liquid crystal display is stated including at least liquid crystal display panel and the driving device being electrically connected with the liquid crystal display panel.The liquid LCD panel includes but not limited to thin film transistor (TFT) (Thin Film Transistor, TFT) liquid crystal display panel, the present invention Position and mode for the driving device of design do not limit.The driving device is used to drive the liquid crystal display panel, And the driving voltage adjustment method of Fig. 2, Fig. 6 and embodiment illustrated in fig. 11 can be executed.Specifically, in the embodiment of the present invention In, as shown in figure 12, the driving device may include：
Circuit 100 is pre-processed, pretreatment fluid LCD panel is used for.
Display circuit 200 is electrically connected with the pretreatment circuit 100, the display circuit 200, for driving the liquid LCD panel display target ties up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image-region With the second image-region；The grayscale of all pixels in described first image region is intended pixel grayscale, second image district The grayscale of all pixels in domain is that target ties up a grayscale, and it is different from the intended pixel grayscale that the target ties up a grayscale.
Gray scale voltage adjustment circuit 300 is electrically connected with the display circuit 200, the gray scale voltage adjustment circuit 300, Target for adjusting the crosstalk detection picture based on target common voltage ties up the gray scale voltage of a grayscale.
Optionally, the pretreatment circuit 100 is specifically used for the property parameters according to the liquid crystal display panel, determines Go out the gray scale voltage of preset highest grayscale；The flicker value of the flicker picture of the highest grayscale is adjusted to initial public in adjustment The minimum flicker value of the flicker picture of the highest grayscale during common voltage；Measure the bright of the grey menu of the highest grayscale The brightness value of the grey menu of angle value and minimum gray scale, and the target brightness value for respectively tying up a grayscale is calculated；Display is respectively tied up The grey menu of point grayscale, it is corresponding to adjust the gray scale voltage for respectively tying up a grayscale so that the brightness value for respectively tying up a grayscale reaches To corresponding target brightness value；And the flicker value of the flicker picture for respectively tying up a grayscale is adjusted to described and respectively ties up a grayscale pair The minimum flicker value for the flicker picture answered.
Optionally, pretreatment circuit 100 adjusts the flicker value of the flicker picture of the highest grayscale to initial in adjustment The minimum flicker value of the flicker picture of the highest grayscale during common voltage, specially：Load initial common voltage and The gray scale voltage of the highest grayscale is to show the flicker picture of highest grayscale；The initial common voltage is adjusted, and detects institute The flicker value of the flicker picture of highest grayscale is stated, so that the flicker value of the flicker picture of the highest grayscale meets the first default item Part；Wherein, the first preset condition of the satisfaction includes at least：By the flicker value of the flicker picture of the highest grayscale adjust to Adjust the minimum flicker value of the flicker picture of the highest grayscale during initial common voltage, or by the sudden strain of a muscle of the highest grayscale The flicker value adjustment of bright picture to less than or flicker picture equal to the highest grayscale the first flicker value.
Optionally, the pretreatment circuit 100, which corresponds to, adjusts the gray scale voltage for respectively tying up a grayscale so as to respectively tie up an ash The brightness value of rank reaches corresponding target brightness value, specially：It initial common voltage after load adjustment and described respectively ties up a little The gray scale voltage of grayscale is to show the grey menu for respectively tying up a grayscale；By the positive and negative of the gray scale voltage for respectively tying up a grayscale Polar voltages are adjusted along first direction, so that the brightness value of the grey menu for respectively tying up a grayscale is target brightness value；Wherein, The first direction refers to the direction of the positive polarity voltage increase for respectively tying up a grayscale, reverse voltage reduction, or anode Property voltage reduce, the increased direction of reverse voltage.
Optionally, the pretreatment circuit 100 adjusts the flicker value of the flicker picture for respectively tying up a grayscale to respectively tying up The minimum flicker value of the corresponding flicker picture of point grayscale, specially：Drive the liquid crystal display panel aobvious by display circuit 100 Show the flicker picture for respectively tying up a grayscale；In a second direction by the positive-negative polarity voltage of the gray scale voltage for respectively tying up a grayscale Adjustment or third direction adjustment, so that the flicker value of the flicker picture of each binding grayscale meets the second preset condition；Its In, the second preset condition of the satisfaction, including：The flicker value for adjusting the flicker picture for respectively tying up a grayscale is respectively to tie up a grayscale Flicker picture minimum flicker value, or the adjustment flicker picture for respectively tying up a grayscale flicker value less than or equal to respectively tying up Corresponding second flicker value of flicker picture of point grayscale；Wherein, the second direction refers to the positive polarity for respectively tying up a grayscale Voltage increases, the increased direction of reverse voltage；The third direction refers to that the positive polarity voltage for respectively tying up a grayscale reduces, The direction that reverse voltage reduces.
Optionally, the gray scale voltage adjustment circuit 300 is specifically used for keeping target common voltage constant；By the string The positive-negative polarity voltage for the gray scale voltage that the target for disturbing detection picture ties up a grayscale is adjusted in a second direction to adjust the crosstalk Detect the crossfire value of picture；Wherein, the crossfire value of the adjustment crosstalk picture includes：By the string of the crosstalk detection picture It disturbs value to be adjusted to be less than or equal to default crossfire value, or the crossfire value of the crosstalk detection picture is adjusted to the target Tie up the minimum crossfire value of the positive-negative polarity voltage of the gray scale voltage of a grayscale in a second direction in moving process, or by the string The crossfire value for disturbing detection picture is adjusted to default crossfire value；Wherein, the second direction refers to respectively tying up the positive polarity electricity of a grayscale Pressure increases, the increased direction of reverse voltage.
Optionally, the gray scale voltage adjustment circuit 300, be additionally operable to judge the crosstalk detection picture crossfire value whether Reduce；When the crossfire value of the crosstalk detection picture does not reduce, then the target is tied up to the positive and negative of the gray scale voltage of grayscale Polar voltages are moved along third direction to adjust the crossfire value of the crosstalk detection picture；Wherein, the adjustment crosstalk inspection Survey picture crossfire value include：The crossfire value of the crosstalk detection picture is adjusted to be less than or equal to default crossfire value, or The crossfire value of the crosstalk detection picture is adjusted to the target is tied up to the positive-negative polarity voltage edge of the gray scale voltage of grayscale Minimum crossfire value in third direction moving process, or the crossfire value of the crosstalk detection picture is adjusted to default crosstalk Value；Wherein, the third direction refers to the positive polarity voltage reduction for respectively tying up a grayscale, the direction that reverse voltage reduces.
Optionally, if the target common voltage includes the first common voltage and the second common voltage, the grayscale electricity Press adjustment circuit 300, be additionally operable to the target tie up a grayscale be first tie up grayscale when, be based on the first common voltage tune The first of the whole crosstalk detection picture ties up the gray scale voltage of a grayscale；A grayscale, which is tied up, in the target ties up a grayscale for second When, the first of the crosstalk detection picture grayscale electricity for tying up a grayscale is adjusted based on first common voltage of the second common voltage Pressure；When adjust the crosstalk detection picture for the first time first ties up the gray scale voltage of a grayscale, first common voltage is to adjust Initial common voltage after whole；It is non-adjust the first of the crosstalk detection picture for the first time and tie up the gray scale voltage of a grayscale when, institute State the first common voltage be it is upper once adjust the first of the crosstalk detection picture and tie up the gray scale voltage of a grayscale when, will be described What the first flicker value for tying up the flicker picture of a grayscale obtained after turning down.
Optionally, it is electrical with display circuit 200 and gray scale voltage adjustment circuit 300 respectively to obtain circuit 400 for flicker value Connection, the flicker value obtain circuit 400, drive the liquid crystal display panel display target to tie up for passing through display circuit 200 The flicker picture of point grayscale, and obtain the flicker value that the target ties up the flicker picture of a grayscale.
The gray scale voltage adjustment circuit 300 is additionally operable to adjust the target common voltage, the target is tied up an ash The flicker value of the flicker picture of rank is adjusted to adjust the minimum flicker value during the target common voltage.
Display circuit 200 is additionally operable to the grey menu for driving the liquid crystal display panel display target to tie up a grayscale.
Measuring circuit 500 is electrically connected with the display circuit 200, the measuring circuit 500, for measuring the target Tie up the brightness value of the grey menu of a grayscale.
Decision circuitry 600 is electrically connected with the measuring circuit 500, the decision circuitry 500, for judging the target Whether the brightness value for tying up the grey menu of a grayscale is tied up in the target in the corresponding predetermined luminance range of a grayscale.
Gray scale voltage adjustment circuit 300 is electrically connected with the decision circuitry 600, the gray scale voltage adjustment circuit 300, It is additionally operable to not tie up the corresponding predetermined luminance of a grayscale in the target when the brightness value for the grey menu that the target ties up a grayscale When in range, the positive-negative polarity voltage that the target is tied up to the gray scale voltage of grayscale is adjusted along first direction, so that the mesh The brightness value for marking the grey menu for tying up a grayscale is tied up in the target in the corresponding predetermined luminance range of a grayscale.
Wherein, the first direction refers to the direction of positive polarity voltage increase, the reverse voltage reduction of respectively tying up a grayscale, Or positive polarity voltage reduces, the increased direction of reverse voltage.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example It is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms differ Surely identical embodiment or example are referred to.Moreover, the particular features, structures, materials, or characteristics of description can be any one It can be combined in any suitable manner in a or multiple embodiments or example.
It is provided for the embodiments of the invention a kind of driving voltage adjustment method above and liquid crystal display has carried out in detail It introduces, principle and implementation of the present invention are described for specific case used herein, the explanation of above example It is merely used to help understand the method and its core concept of the present invention；Meanwhile for those of ordinary skill in the art, according to this The thought of invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not answered It is interpreted as limitation of the present invention.

Claims (10)

1. a kind of driving voltage adjustment method, which is characterized in that the driving voltage adjustment method includes：
Pretreatment fluid LCD panel；
Display target ties up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image-region and second Image-region, the target, which ties up a grayscale and ties up a grayscale and second including first, ties up a grayscale；Wherein, described first image region The grayscale of all pixels be intended pixel grayscale, the grayscale of all pixels of second image-region is that target ties up an ash Rank, it is different from the intended pixel grayscale that the target ties up a grayscale, and it is second image-region that the target, which ties up a grayscale, In respectively tie up in a grayscale one or more correspond to adjustable grayscale；
The target that the crosstalk detection picture is adjusted based on target common voltage ties up the gray scale voltage of a grayscale.
2. driving voltage adjustment method according to claim 1, which is characterized in that the pretreatment fluid LCD panel, Including：
According to the property parameters of liquid crystal display panel, the gray scale voltage of preset highest grayscale is determined；
The flicker value of the flicker picture of the highest grayscale is adjusted to highest ash during adjusting initial common voltage The minimum flicker value of the flicker picture of rank；
The brightness value of the grey menu of the highest grayscale and the brightness value of the grey menu of minimum gray scale are measured, and is calculated To the target brightness value for respectively tying up a grayscale；
Show the grey menu for respectively tying up a grayscale, it is corresponding to adjust the gray scale voltage for respectively tying up a grayscale so that described respectively tie up The brightness value of point grayscale reaches corresponding target brightness value；And
The flicker value of the flicker picture for respectively tying up a grayscale is adjusted to described and respectively ties up the corresponding flicker picture of a grayscale most Small flicker value.
3. driving voltage adjustment method according to claim 2, which is characterized in that the flicker by the highest grayscale The flicker value of picture is adjusted to the minimum flicker value of the flicker picture of highest grayscale during adjusting initial common voltage, Including：
The gray scale voltage of initial common voltage and the highest grayscale is loaded to show the flicker picture of the highest grayscale；
The initial common voltage is adjusted, and detects the flicker value of the flicker picture of the highest grayscale, so that the highest is grey The flicker value of the flicker picture of rank meets the first preset condition；
Wherein, the first preset condition of the satisfaction includes at least：By the flicker value of the flicker picture of the highest grayscale adjust to The minimum flicker value of the flicker picture of highest grayscale during adjusting the initial common voltage, or the highest is grey Rank flicker picture flicker value adjustment to less than or equal to the highest grayscale flicker picture the first flicker value.
4. driving voltage adjustment method according to claim 3, which is characterized in that the corresponding adjustment is described respectively to tie up an ash The gray scale voltage of rank so that the brightness value for respectively tying up a grayscale reaches corresponding target brightness value, including：
Initial common voltage and the gray scale voltage for respectively tying up a grayscale after load adjustment described respectively tie up a grayscale to show Grey menu；
The positive-negative polarity voltage of the gray scale voltage for respectively tying up a grayscale is adjusted along first direction, so that described respectively tie up a grayscale Grey menu brightness value be target brightness value；
Wherein, the first direction refers to the direction of the positive polarity voltage increase for respectively tying up a grayscale, reverse voltage reduction, Or positive polarity voltage reduces, the increased direction of reverse voltage.
5. driving voltage adjustment method according to claim 4, which is characterized in that described to be adjusted based on target common voltage The target of the crosstalk detection picture ties up the gray scale voltage of a grayscale, including：
Keep target common voltage constant；
The target of the crosstalk detection picture is tied up the gray scale voltage of a grayscale positive-negative polarity voltage adjust in a second direction with Adjust the crossfire value of the crosstalk detection picture；Wherein, the crossfire value of the adjustment crosstalk picture includes：By the crosstalk The crossfire value of detection picture is adjusted to be less than or equal to default crossfire value, or the crossfire value of the crosstalk detection picture is adjusted For the target is tied up a grayscale gray scale voltage the positive-negative polarity voltage minimum crossfire value in moving process in a second direction, Or the crossfire value of the crosstalk detection picture is adjusted to default crossfire value；
Wherein, the second direction refers to respectively tying up the positive polarity voltage increase of a grayscale, the increased direction of reverse voltage.
6. driving voltage adjustment method according to claim 5, which is characterized in that described to be adjusted based on target common voltage The target of the crosstalk detection picture ties up the gray scale voltage of a grayscale, further includes：
Judge whether the crossfire value of the crosstalk detection picture reduces；
When the crossfire value of the crosstalk detection picture does not reduce, then the target is tied up to the positive and negative anodes of the gray scale voltage of grayscale Property voltage is moved along third direction to adjust the crossfire value of the crosstalk detection picture；Wherein, the adjustment crosstalk detection The crossfire value of picture includes：The crossfire value of the crosstalk detection picture is adjusted to be less than or equal to default crossfire value, or will The crossfire value of the crosstalk detection picture be adjusted to by the target tie up a grayscale gray scale voltage positive-negative polarity voltage along Minimum crossfire value in three direction moving process, or the crossfire value of the crosstalk detection picture is adjusted to default crossfire value；
Wherein, the third direction refers to the positive polarity voltage reduction for respectively tying up a grayscale, the direction that reverse voltage reduces.
7. driving voltage adjustment method according to claim 3, which is characterized in that the target common voltage includes first Common voltage and the second common voltage, the target that the crosstalk detection picture is adjusted based on target common voltage tie up a grayscale Gray scale voltage, including：
The target tie up a grayscale be first tie up grayscale when, the crosstalk detection is adjusted based on first common voltage and is drawn The first of face ties up the gray scale voltage of a grayscale；
The target tie up a grayscale be second tie up grayscale when, institute is adjusted based on first common voltage of the second common voltage State the first of the crosstalk detection picture gray scale voltage for tying up a grayscale；
When adjust the crosstalk detection picture for the first time first ties up the gray scale voltage of a grayscale, first common voltage is to adjust Initial common voltage after whole；It is non-adjust the first of the crosstalk detection picture for the first time and tie up the gray scale voltage of a grayscale when, institute State the first common voltage be it is upper once adjust the first of the crosstalk detection picture and tie up the gray scale voltage of a grayscale when, will be described What the first flicker value for tying up the flicker picture of a grayscale obtained after turning down；
Second common voltage is incited somebody to action when this adjusts the first of the crosstalk detection picture and ties up the gray scale voltage of a grayscale What the described first flicker value for tying up the flicker picture of a grayscale obtained after turning down.
8. according to claim 3 to 6 any one of them driving voltage adjustment method, which is characterized in that the driving voltage tune Method for testing further includes：
Display target ties up the flicker picture of a grayscale, and obtains the flicker value that the target ties up the flicker picture of a grayscale；
The target common voltage is adjusted, the flicker value that the target is tied up to the flicker picture of grayscale is adjusted to described in adjustment Minimum flicker value during target common voltage.
9. driving voltage adjustment method according to claim 8, which is characterized in that the adjustment target common electrical Pressure, the flicker value that the target is tied up to the flicker picture of grayscale are adjusted to adjust during the target common voltage most After small flicker value, the driving voltage adjustment method further includes：
Display target ties up the grey menu of a grayscale, and measures the brightness value that the target ties up the grey menu of a grayscale；
Judge the target to tie up the brightness value of the grey menu of a grayscale whether in the target to tie up a grayscale corresponding default bright It spends in range；
When the brightness value that the target ties up the grey menu of a grayscale does not tie up the corresponding predetermined luminance model of a grayscale in the target When enclosing interior, the positive-negative polarity voltage that the target is tied up to the gray scale voltage of grayscale is adjusted along first direction, so that the target The brightness value for tying up the grey menu of a grayscale is tied up in the target in the corresponding predetermined luminance range of a grayscale.
10. a kind of liquid crystal display, including liquid crystal display panel and the driving device with liquid crystal display panel electric connection, The driving device is for driving the liquid crystal display panel, which is characterized in that the driving device includes pretreatment circuit, display Circuit and gray scale voltage adjustment circuit, the display circuit are electric with the pretreatment circuit and gray scale voltage adjustment respectively Road is electrically connected；The pretreatment circuit pre-processes the liquid crystal display panel, and the display circuit drives the liquid crystal display Display panel target ties up the crosstalk detection picture of a grayscale, and the crosstalk detection picture includes at least the first image-region and second Image-region, the target, which ties up a grayscale and ties up a grayscale and second including first, ties up a grayscale；Wherein, described first image region The grayscale of all pixels be intended pixel grayscale, the grayscale of all pixels of second image-region is that target ties up an ash Rank, it is different from the intended pixel grayscale that the target ties up a grayscale, and it is second image-region that the target, which ties up a grayscale, In respectively tie up in a grayscale one or more correspond to adjustable grayscale；The gray scale voltage adjustment circuit is based on target common electrical The target of the pressure adjustment crosstalk detection picture ties up the gray scale voltage of a grayscale.
CN201810398745.6A 2018-04-28 2018-04-28 Driving voltage adjustment method and liquid crystal display Pending CN108597428A (en)

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