CN113948048A - Crosstalk compensation method, crosstalk compensation circuit, display panel and display - Google Patents

Crosstalk compensation method, crosstalk compensation circuit, display panel and display Download PDF

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CN113948048A
CN113948048A CN202111147841.1A CN202111147841A CN113948048A CN 113948048 A CN113948048 A CN 113948048A CN 202111147841 A CN202111147841 A CN 202111147841A CN 113948048 A CN113948048 A CN 113948048A
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voltage
display area
display
data driving
driving voltage
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CN113948048B (en
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蒋勇杰
李荣荣
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HKC Co Ltd
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HKC Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • 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
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention discloses a crosstalk compensation method, a crosstalk compensation circuit, a display panel and a display, and belongs to the technical field of display. According to the invention, the display area of the crosstalk test picture is divided into the first display area to the third display area, the first data driving voltage, the second data driving voltage and the third data driving voltage corresponding to the first display area to the third display area are sequentially obtained, the crosstalk compensation voltmeter is obtained according to the first data driving voltage, the second data driving voltage and the third data driving voltage, the table lookup is carried out in the crosstalk compensation voltmeter according to the first data driving voltage and the third data driving voltage, the compensation voltage is obtained, and the display brightness of the second display area is adjusted according to the compensation voltage, so that the display brightness of the second display area is consistent with the display brightness of the third display area. By detecting the data driving voltage, looking up a table in the crosstalk compensation voltmeter, and adjusting the display brightness according to the compensation voltage, the crosstalk of the display picture is reduced, an external circuit is not needed, and the cost is reduced.

Description

Crosstalk compensation method, crosstalk compensation circuit, display panel and display
Technical Field
The present invention relates to the field of display technologies, and in particular, to a crosstalk compensation method, a crosstalk compensation circuit, a display panel, and a display.
Background
In liquid crystal display, when a display is turned over in a row (the positive and negative polarities of a voltage driven by liquid crystal are continuously changed, and row turning refers to one-time row turning, that is, the polarities of adjacent rows are different), a display picture often encounters a crosstalk phenomenon, that is, local display affects the display effect of other areas in a screen. At present, a common solution is to add an operational amplifier circuit to the common electrode to enhance the output capability of the common electrode. Or a negative feedback circuit is added on the common electrode, thereby reducing the logarithm of the common electrode. The scheme of adding an operational amplifier circuit or a feedback circuit usually needs to cost higher cost, and the improvement effect is limited.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a crosstalk compensation method, a crosstalk compensation circuit, a display panel and a display, and aims to solve the technical problem that the crosstalk compensation scheme in the prior art needs high cost.
To achieve the above object, the present invention provides a crosstalk compensation method, including the steps of:
dividing a display area of a crosstalk test picture into a first display area, a second display area and a third display area;
acquiring a first data driving voltage corresponding to the first display area, a second data driving voltage corresponding to the second display area and a third data driving voltage corresponding to the third display area;
obtaining a crosstalk compensation voltmeter according to the first data driving voltage, the second data driving voltage and the third data driving voltage;
looking up a table in the crosstalk compensation voltmeter according to the first data driving voltage and the third data driving voltage to obtain a compensation voltage;
and adjusting the display brightness of the second display area according to the compensation voltage so as to enable the display brightness of the second display area to be consistent with the display brightness of the third display area.
Optionally, the obtaining a crosstalk compensation voltmeter according to the first data driving voltage, the second data driving voltage, and the third data driving voltage includes:
calculating according to the first data driving voltage and the third data driving voltage to obtain a first voltage difference;
calculating according to the second data driving voltage and the third data driving voltage to obtain a second voltage difference;
and comparing the first voltage difference with the second voltage difference, generating a detection signal according to a comparison result, and calling a crosstalk compensation voltmeter according to the detection signal.
Optionally, the table look-up in the crosstalk compensation voltage table according to the first data driving voltage, the second data driving voltage, and the third data driving voltage to obtain the compensation voltage includes:
calculating according to the first data driving voltage and the third data driving voltage to obtain a first voltage difference;
and looking up a table in the crosstalk compensation voltmeter according to the first voltage difference to obtain the compensation voltage of the second display area.
Optionally, the adjusting the display brightness of the second display region according to the compensation voltage to make the display brightness of the second display region consistent with the display brightness of the third display region includes:
performing voltage compensation on a second display area according to the compensation voltage and the second data driving voltage to generate a liquid crystal voltage of the second display area;
and adjusting the display brightness of the second display area according to the liquid crystal voltage so as to enable the display brightness of the second display area to be consistent with the display brightness of the third display area.
Optionally, before obtaining the crosstalk compensation voltage table according to the first data driving voltage, the second data driving voltage, and the third data driving voltage, the method includes:
adjusting the data line voltage of the second display area;
synchronously measuring the display brightness value of the second display area and the display brightness value of the third display area;
when the display brightness value of the second display area is equal to the display brightness value of the third display area, generating an adjusting voltage;
and generating a crosstalk compensation voltmeter according to the adjusting voltage.
Optionally, the adjusting the data line voltage of the second display area includes:
dividing the display brightness of the first display area into a plurality of brightness levels;
and correspondingly adjusting the voltage of the data line of the second display area according to the brightness level.
In addition, in order to achieve the above object, the present invention further provides a crosstalk compensation circuit, where the crosstalk compensation circuit implements the crosstalk compensation method, a display area of a crosstalk test picture is divided into a first display area, a second display area, and a third display area, the crosstalk compensation circuit includes a comparator, a first input end of the comparator is connected to the first display area and the third display area, and a second input end of the comparator is connected to the second display area and the third display area;
the comparator is configured to receive a first voltage difference between a first data driving voltage and a third data driving voltage at a first input end, receive a second voltage difference between a second data driving voltage and the third data driving voltage at a second input end, compare the first voltage difference with the second voltage difference, and generate a detection signal according to a comparison result.
Optionally, the crosstalk compensation circuit further includes a memory, and an output terminal of the comparator is connected to an input terminal of the memory;
the memory is used for storing a crosstalk compensation voltmeter;
the memory is further configured to receive the detection signal, retrieve the crosstalk compensation voltmeter according to the detection signal, and look up a table in the crosstalk compensation voltmeter according to a voltage difference between the first data driving voltage and the third data driving voltage to obtain a compensation voltage.
In addition, in order to achieve the above object, the present invention further provides a display panel, which includes a display area and a non-display area, wherein the display panel includes the crosstalk compensation circuit as described above, and the crosstalk compensation circuit is integrated on the non-display area.
In addition, in order to achieve the above object, the present invention further provides a display, which includes the display panel and the backlight module as described above, wherein the backlight module is disposed on a back surface of the display panel, and the backlight module is configured to provide a backlight source to the display panel.
According to the crosstalk compensation method, the display area of a crosstalk test picture is divided into a first display area, a second display area and a third display area, a first data driving voltage corresponding to the first display area, a second data driving voltage corresponding to the second display area and a third data driving voltage corresponding to the third display area are obtained, a crosstalk compensation voltmeter is obtained according to the first data driving voltage, the second data driving voltage and the third data driving voltage, table lookup is carried out in the crosstalk compensation voltmeter according to the first data driving voltage and the third data driving voltage, compensation voltage is obtained, and the display brightness of the second display area is adjusted according to the compensation voltage, so that the display brightness of the second display area is consistent with the display brightness of the third display area. The crosstalk compensation voltage meter is used for checking the data driving voltage of the display area to obtain the compensation voltage, the crosstalk of a display picture is reduced according to the compensation voltage, an external circuit is not needed, and the cost is reduced.
Drawings
FIG. 1 is a schematic flow chart of a crosstalk compensation method according to a first embodiment of the present invention;
FIG. 2 is a block diagram of a display area of a crosstalk testing frame according to an embodiment of the crosstalk compensation method of the present invention;
FIG. 3 is a schematic voltage variation curve of an embodiment of a crosstalk compensation method according to the present invention;
FIG. 4 is a flowchart illustrating a crosstalk compensation method according to a second embodiment of the present invention;
FIG. 5 is a flow chart illustrating a crosstalk compensation method according to a third embodiment of the present invention;
FIG. 6 is a circuit diagram of a crosstalk compensation circuit according to a first embodiment of the present invention;
FIG. 7 is a schematic diagram of a display panel according to an embodiment of the crosstalk compensation circuit of the present application;
fig. 8 is a schematic structural diagram of a display according to an embodiment of the crosstalk compensation circuit of the present application.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
10 A first display region DA First input terminal of comparator
20 A second display region DB Second input terminal of comparator
30 A third display area VA' Data line A transition voltage
40 Display area VB' B-transition voltage of data line
50 Non-display area Data of A Voltage data of data line A
60 Main control panel Data of B Voltage data of data line B
70 Display panel Common waveform Common electrode voltage waveform
80 Backlight module AVDD Supply voltage input
90 Display device com2 Common electrode voltage of second display region
L Comparator with a comparator circuit com1 Common electrode voltage of the first display region
M Memory device VA Data line A input voltage
A Data line A VB Data line B input voltage
B Data line B
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
An embodiment of the present invention provides a crosstalk compensation method, and referring to fig. 1, fig. 1 is a schematic flow chart of a crosstalk compensation method according to a first embodiment of the present invention.
In this embodiment, the crosstalk compensation method includes the following steps:
step S10: the display area of the crosstalk test screen is divided into a first display area 10, a second display area 20, and a third display area 30.
As shown in fig. 2, fig. 2 is a block diagram of a display area of a crosstalk test picture according to an embodiment of the crosstalk compensation method of the present invention, wherein the display area of the crosstalk test picture can be divided into a first display area 10, a second display area 20, and a third display area 30 according to display brightness, and the display brightness is determined by a gray scale of the picture. Wherein, a denotes a data line a, B denotes a data line B, the data line a passes through the first display region 10 and the third display region 30, and the data line B passes through the second display region 20 and the third display region 30. Before the crosstalk compensation, the display brightness of the first display area 10, the second display area 20 and the third display area 30 is different, so that the crosstalk phenomenon exists on the display screen.
Step S20: a first data driving voltage corresponding to the first display area 10, a second data driving voltage corresponding to the second display area 20, and a third data driving voltage corresponding to the third display area 30 are obtained.
It is easily understood that the first data driving voltage corresponds to a voltage of the data line a in the first display region 10, the second data driving voltage corresponds to a voltage of the data line B before crosstalk compensation in the second display region 20, and the third data driving voltage corresponds to a voltage of the data line a in the third display region 30 (since the input voltages of the data line a and the data line B are the same, the third data driving voltage may correspond to a voltage of the data line B in the third display region 30).
Step S30: and acquiring a crosstalk compensation voltmeter according to the first data driving voltage, the second data driving voltage and the third data driving voltage.
It is easy to understand that when the voltage difference between the first data driving voltage and the third data driving voltage is greater than the voltage difference between the second data driving voltage and the third data driving voltage, the pre-stored crosstalk compensation voltage table may be retrieved.
It will be appreciated that the crosstalk compensation voltage table may be a table generated from the optimal compensation data obtained from multiple crosstalk compensation tests. The crosstalk compensation voltage table stores data driving voltages corresponding to the first display region 10, the second display region 20, and the third display region 30, and the display luminance of the display region is determined according to the data driving voltages. Because the data line a passes through the first display area 10 and the third display area 30, and the data line B passes through the second display area 20 and the third display area 30, the display brightness of the first display area 10 is different, which affects the corresponding change of the display brightness of the third area, by adjusting the data driving voltage corresponding to the second display area 20, the voltage difference between the voltage adjusted by the second display area 20 and the common electrode voltage of the second display area 20 is equal to the voltage difference between the third data driving voltage of the third display area 30 and the common electrode voltage of the third display area 30, so that the display brightness of the second display area 20 is consistent with the display brightness of the third display area 30, and the display frame crosstalk is reduced.
Step S40: and looking up a table in the crosstalk compensation voltmeter according to the first data driving voltage and the third data driving voltage to obtain a compensation voltage.
It should be understood that, according to the voltage difference between the first data driving voltage and the third data driving voltage, a table lookup may be performed in the crosstalk compensation voltage table, a voltage interval of the voltage difference between the first data driving voltage and the third data driving voltage in the crosstalk compensation voltage table is determined, and a corresponding compensation voltage is determined according to the voltage interval.
Step S50: and adjusting the display brightness of the second display area 20 according to the compensation voltage so that the display brightness of the second display area 20 is consistent with the display brightness of the third display area 30.
It can be understood that, referring to fig. 3, fig. 3 is a schematic voltage curve diagram of an embodiment of the crosstalk compensation method of the present invention, Data of a is voltage Data of the Data line a, Data of B is voltage Data of the Data line B, Common waveform is Common electrode voltage waveform, VAFor the data line A, the input voltage is the third data driving voltage, VBThe voltage is input to the data line B, com1 is the common electrode voltage of the first display region 10, and com2 is the common electrode voltage of the second display region 20. The compensation voltage may be applied on the basis of the second data driving voltage of the second display area 20, so that a voltage difference between the voltage after crosstalk compensation of the second display area 20 and the common electrode voltage of the second display area 20 is equal to a voltage difference between the third data driving voltage of the third display area 30 and the common electrode voltage of the third display area 30, so that the display luminance of the second display area 20 is consistent with the display luminance of the third display area 30, and the crosstalk of the display screen is reduced.
In the embodiment, the display area of the crosstalk test picture is divided into the first display area 10, the second display area 20 and the third display area 30, a first data driving voltage corresponding to the first display area 10, a second data driving voltage corresponding to the second display area 20 and a third data driving voltage corresponding to the third display area 30 are obtained, a crosstalk compensation voltmeter is obtained according to the first data driving voltage, the second data driving voltage and the third data driving voltage, table lookup is performed in the crosstalk compensation voltmeter according to the first data driving voltage and the third data driving voltage to obtain a compensation voltage, and the display brightness of the second display area 20 is adjusted according to the compensation voltage, so that the display brightness of the second display area 20 is consistent with the display brightness of the third display area 30. The crosstalk compensation voltage meter is used for checking the data driving voltage of the display area to obtain the compensation voltage, the crosstalk of a display picture is reduced according to the compensation voltage, an external circuit is not needed, and the cost is reduced.
Referring to fig. 4, fig. 4 is a flowchart illustrating a crosstalk compensation method according to a second embodiment of the present invention.
Based on the first embodiment, in the crosstalk compensation method of this embodiment, the step S30 includes:
step S301: and calculating according to the first data driving voltage and the third data driving voltage to obtain a first voltage difference.
It is easily understood that the calculation is performed based on the first data driving voltage and the third data driving voltage to take an absolute value of a difference between the first data driving voltage value and the third data driving voltage value as the first voltage difference.
Step S302: and calculating according to the second data driving voltage and the third data driving voltage to obtain a second voltage difference.
It is understood that the calculation is performed based on the second data driving voltage and the third data driving voltage to take an absolute value of a difference between the second data driving voltage value and the third data driving voltage value as the second voltage difference.
Step S303: and comparing the first voltage difference with the second voltage difference, generating a detection signal according to a comparison result, and calling a crosstalk compensation voltmeter according to the detection signal.
It should be appreciated that the first voltage difference is compared to the second voltage difference, and a pre-stored crosstalk compensation voltage table may be retrieved when the first voltage difference is greater than the second voltage difference.
In this embodiment, the step S40 includes:
step S401: and looking up a table in the crosstalk compensation voltmeter according to the first voltage difference to obtain the compensation voltage of the second display area 20.
It should be understood that a table look-up table may be performed in the crosstalk compensation voltage table according to the first voltage differences, a voltage interval of the first voltage differences in the crosstalk compensation voltage table is determined, and the corresponding compensation voltage is determined according to the voltage interval.
In this embodiment, the step S50 includes:
step S501: and performing voltage compensation on the second display area 20 according to the compensation voltage and the second data driving voltage to generate a liquid crystal voltage of the second display area 20.
It is understood that the voltage value of the liquid crystal voltage of the second display region 20 may be the second data driving voltage value plus the compensation voltage value minus the common electrode voltage value of the second display region 20.
Step S502: and adjusting the display brightness of the second display area 20 according to the liquid crystal voltage so that the display brightness of the second display area 20 is consistent with the display brightness of the third display area 30.
It is easy to understand that, the display brightness of the second display area 20 is adjusted according to the liquid crystal voltage, and the voltage value of the liquid crystal voltage of the second display area 20 is equal to the voltage difference value between the third data driving voltage of the third display area 30 and the common electrode voltage of the third display area 30, so that the display brightness of the second display area 20 is consistent with the display brightness of the third display area 30, and the display frame crosstalk is reduced.
In this embodiment, a first voltage difference is obtained by calculating according to a first data driving voltage and a third data driving voltage, a second voltage difference is obtained by calculating according to a second data driving voltage and a third data driving voltage, the first voltage difference is compared with the second voltage difference, a detection signal is generated according to the comparison result, a crosstalk compensation voltmeter is retrieved according to the detection signal, a table is looked up in the crosstalk compensation voltmeter according to the first voltage difference to obtain a compensation voltage of a second display region 20, a voltage compensation is performed on the second display region 20 according to the compensation voltage and the second data driving voltage to generate a liquid crystal voltage of the second display region 20, a display brightness of the second display region 20 is adjusted according to the liquid crystal voltage to make the display brightness of the second display region 20 consistent with that of the third display region 30, the table is looked up in the crosstalk compensation voltmeter by calculating and comparing, the compensation voltage is obtained, the crosstalk of the display picture is reduced according to the compensation voltage, and the accuracy of crosstalk compensation is improved.
Referring to fig. 5, fig. 5 is a flowchart illustrating a crosstalk compensation method according to a third embodiment of the present invention.
Based on the first embodiment and the second embodiment, the crosstalk compensation method of this embodiment includes, before the step S30:
step S201': dividing the display brightness of the first display region 10 into a plurality of brightness levels; and correspondingly adjusting the data line voltage of the second display area 20 according to the brightness level.
It should be understood that the display brightness of the first display region 10 can be divided into several brightness levels, for example, in table 1, and the display brightness can be divided into n levels, generally 3 to 5 levels, V11 to V1n may represent data line voltages (the data line voltages may be data driving voltages) of the first display regions 10 at corresponding luminance levels, respectively. Since the data line a passes through the first display area 10 and the third display area 30, and the data line B passes through the second display area 20 and the third display area 30, the display brightness of the first display area 10 is different, which affects the corresponding change of the display brightness of the third display area, V31 to V3n may represent the data line voltages of the third display regions 30 at the corresponding brightness levels, respectively. Correspondingly adjusting the voltage, V, of the data line of the second display region 20 according to the brightness level21 to V2n may indicate that the second display regions 20 respectively correspond to the brightness levelsAnd (5) lowering the regulated data line voltage. Δ V1 to Δ Vn may respectively represent voltage differences between the data line voltage of the first display region 10 and the data line voltage of the third display region 30 at the corresponding brightness levels, and V1 to Vn may respectively represent voltage differences between the data line voltage before the adjustment of the second display region 20 and the data line voltage after the adjustment of the second display region 20 at the corresponding brightness levels, as shown in table 1 below, where table 1 is a crosstalk compensation voltage table.
TABLE 1
Figure BDA0003284682880000091
Step S202': the display luminance value of the second display region 20 and the display luminance value of the third display region 30 are simultaneously measured.
It is easy to understand that, by synchronously measuring the display brightness value of the second display area 20 and the display brightness value of the third display area 30 through the optical device, the data line voltage corresponding to the display brightness value of the third display area 30 at different brightness levels is recorded, and the display brightness value can also be recorded at the same time (not shown in table 1).
Step S203': generating an adjustment voltage when the display brightness value of the second display area 20 is equal to the display brightness value of the third display area 30; and generating a crosstalk compensation voltmeter according to the adjusting voltage.
It is understood that, when the display brightness value of the second display region 20 is equal to the display brightness value of the third display region 30 at different brightness levels, the voltage difference between the voltage of the data line of the first display region 10 at the corresponding brightness level and the voltage of the data line of the third display region 30 at the corresponding brightness level (the adjusted voltage of the data line of the second display region 20) and the voltage difference between the voltage of the data line of the second display region 20 before adjustment and the adjusted voltage of the data line of the second display region 20 at the corresponding brightness level can be recorded by calculation. The recorded data is ordered to a crosstalk compensation voltmeter.
In the embodiment, the display brightness of the first display area 10 is divided into a plurality of brightness levels, the data line voltage of the second display area 20 is adjusted according to the brightness levels, the display brightness value of the second display area 20 and the display brightness value of the third display area 30 are synchronously measured, and when the display brightness value of the second display area 20 is equal to the display brightness value of the third display area 30, an adjustment voltage is generated; and generating a crosstalk compensation voltmeter according to the adjusting voltage. The data line voltage of the second display area 20 is correspondingly adjusted according to the change of the data line voltage of each display area under different brightness levels to obtain the adjustment voltage under different compensation conditions, so that the crosstalk compensation voltmeter is not a table generated by the optimal compensation data obtained by multiple crosstalk compensation tests, and the accuracy of crosstalk compensation is improved.
In addition, an embodiment of the present invention further provides a crosstalk compensation circuit, where the crosstalk compensation circuit implements the crosstalk compensation method described above, and a display area of a crosstalk test screen is divided into a first display area, a second display area, and a third display area.
The crosstalk compensation circuit comprises a comparator L, a first input end of the comparator L is connected with the first display area 10 and the third display area 30, and a second input end of the comparator L is connected with the second display area 20 and the third display area 30;
the comparator L is configured to receive a first voltage difference between the first data driving voltage and the third data driving voltage at the first input end, receive a second voltage difference between the second data driving voltage and the third data driving voltage at the second input end, compare the first voltage difference with the second voltage difference, and generate a detection signal according to a comparison result.
It should be understood that the crosstalk compensation circuit may be integrated with the driving chip of the display panel 70. As shown in fig. 2, the display area of the crosstalk test screen can be divided into a first display area 10, a second display area 20 and a third display area 30 according to the display brightness, and the display brightness is determined by the gray scale of the screen. The data line a passes through the first display area 10 and the third display area 30, and the data line B passes through the second display area 20 and the third display area 30. Referring to fig. 6, fig. 6 is a circuit diagram of a crosstalk compensation circuit according to a first embodiment of the present invention, where AVDD is a supply voltage input terminal of a comparator L, DA denotes a first input terminal of the comparator L, and DB denotes a second input terminal of the comparator L. The first input terminal of the comparator L is connected to the data line a, i.e., the first display region 10 and the third display region 30, and the second input terminal of the comparator L is connected to the data line B, i.e., the second display region 20 and the third display region 30. The comparator L compares the first voltage difference with the second voltage difference, and generates a detection signal when the first voltage difference is greater than the second voltage difference.
The crosstalk compensation circuit further comprises a memory M, and an output end of the comparator L is connected with an input end of the memory M.
The memory M is used for storing a crosstalk compensation voltmeter;
the memory M is further configured to receive the detection signal, retrieve the crosstalk compensation voltmeter according to the detection signal, and look up a table in the crosstalk compensation voltmeter according to a voltage difference between the first data driving voltage and the third data driving voltage to obtain a compensation voltage.
It is understood that the memory M may be a non-volatile memory M or a random access memory M, and the memory may store the crosstalk compensation voltage table and retrieve the crosstalk compensation voltage table when receiving the detection signal. The memory M may obtain a voltage difference between the first data driving voltage and the third data driving voltage, perform table lookup in the crosstalk compensation voltmeter according to the voltage difference, determine a voltage interval of the voltage difference in the crosstalk compensation voltmeter, determine a corresponding compensation voltage according to the voltage interval, and feed back the compensation voltage to the data line B to compensate the voltage of the second display region 20, so that a voltage difference between the voltage after the crosstalk compensation of the second display region 20 and the common electrode voltage of the second display region 20 is equal to a voltage difference between the third data driving voltage of the third display region 30 and the common electrode voltage of the third display region 30, so that the display luminance of the second display region 20 is consistent with the display luminance of the third display region 30, and the crosstalk of the display screen is reduced.
Since the crosstalk compensation circuit adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In addition, an embodiment of the present invention further provides a display panel, referring to fig. 7, fig. 7 is a schematic structural diagram of the display panel according to the embodiment of the crosstalk compensation circuit of the present application, and the display panel 70 includes a display area 40 and a non-display area 50. The display panel includes crosstalk compensation circuitry as described above, which may be integrated on the non-display area 50. In a specific implementation, the non-display area 50 may be provided with a main control board 60, and the crosstalk compensation circuit may be integrated with the main control board 60.
Since the display panel adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
In addition, an embodiment of the present invention further provides a display, referring to fig. 8, fig. 8 is a schematic structural diagram of the display according to an embodiment of the crosstalk compensation circuit of the present application, where the display 90 includes the display panel 70 and the backlight module 80, the backlight module 80 is disposed on the back surface of the display panel 70, and the backlight module 80 is used for providing a backlight source to the display panel 70.
Since the display adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and are not described in detail herein.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not described in detail in this embodiment may refer to the crosstalk compensation method provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A crosstalk compensation method, characterized in that the crosstalk compensation method comprises:
dividing a display area of a crosstalk test picture into a first display area, a second display area and a third display area;
acquiring a first data driving voltage corresponding to the first display area, a second data driving voltage corresponding to the second display area and a third data driving voltage corresponding to the third display area;
obtaining a crosstalk compensation voltmeter according to the first data driving voltage, the second data driving voltage and the third data driving voltage;
looking up a table in the crosstalk compensation voltmeter according to the first data driving voltage and the third data driving voltage to obtain a compensation voltage;
and adjusting the display brightness of the second display area according to the compensation voltage so as to enable the display brightness of the second display area to be consistent with the display brightness of the third display area.
2. The crosstalk compensation method of claim 1, wherein obtaining a crosstalk compensation voltage table according to the first data driving voltage, the second data driving voltage, and the third data driving voltage comprises:
calculating according to the first data driving voltage and the third data driving voltage to obtain a first voltage difference;
calculating according to the second data driving voltage and the third data driving voltage to obtain a second voltage difference;
and comparing the first voltage difference with the second voltage difference, generating a detection signal according to a comparison result, and calling a crosstalk compensation voltmeter according to the detection signal.
3. The crosstalk compensation method of claim 1, wherein the performing a table lookup in the crosstalk compensation voltage table according to the first data driving voltage, the second data driving voltage, and the third data driving voltage to obtain the compensation voltage comprises:
calculating according to the first data driving voltage and the third data driving voltage to obtain a first voltage difference;
and looking up a table in the crosstalk compensation voltmeter according to the first voltage difference to obtain the compensation voltage of the second display area.
4. The crosstalk compensation method of claim 1, wherein said adjusting the display brightness of the second display region according to the compensation voltage to make the display brightness of the second display region consistent with the display brightness of the third display region comprises:
performing voltage compensation on a second display area according to the compensation voltage and the second data driving voltage to generate a liquid crystal voltage of the second display area;
and adjusting the display brightness of the second display area according to the liquid crystal voltage so as to enable the display brightness of the second display area to be consistent with the display brightness of the third display area.
5. The crosstalk compensation method of any of claims 1-4, wherein before obtaining a crosstalk compensation voltage table according to the first data driving voltage, the second data driving voltage, and the third data driving voltage, comprising:
adjusting the data line voltage of the second display area;
synchronously measuring the display brightness value of the second display area and the display brightness value of the third display area;
when the display brightness value of the second display area is equal to the display brightness value of the third display area, generating an adjusting voltage;
and generating a crosstalk compensation voltmeter according to the adjusting voltage.
6. The crosstalk compensation method of claim 5, wherein said adjusting the data line voltage of the second display region comprises:
dividing the display brightness of the first display area into a plurality of brightness levels;
and correspondingly adjusting the voltage of the data line of the second display area according to the brightness level.
7. A crosstalk compensation circuit, characterized in that the crosstalk compensation circuit implements the crosstalk compensation method according to any one of claims 1 to 6, a display area of a crosstalk test picture is divided into a first display area, a second display area and a third display area, the crosstalk compensation circuit includes a comparator, a first input terminal of the comparator is connected with the first display area and the third display area, and a second input terminal of the comparator is connected with the second display area and the third display area;
the comparator is configured to receive a first voltage difference between a first data driving voltage and a third data driving voltage at a first input end, receive a second voltage difference between a second data driving voltage and the third data driving voltage at a second input end, compare the first voltage difference with the second voltage difference, and generate a detection signal according to a comparison result.
8. The crosstalk compensation circuit of claim 7 wherein the crosstalk compensation circuit further comprises a memory, an output of the comparator being connected to an input of the memory;
the memory is used for storing a crosstalk compensation voltmeter;
the memory is further configured to receive the detection signal, retrieve the crosstalk compensation voltmeter according to the detection signal, and look up a table in the crosstalk compensation voltmeter according to a voltage difference between the first data driving voltage and the third data driving voltage to obtain a compensation voltage.
9. A display panel comprising a display area and a non-display area, wherein the display panel comprises the crosstalk compensation circuit according to any of claims 7 or 8, the crosstalk compensation circuit being integrated on the non-display area.
10. A display, comprising the display panel of claim 9 and a backlight module, wherein the backlight module is disposed on a back surface of the display panel, and the backlight module is configured to provide a backlight source to the display panel.
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