CN111540322A - Polarity inversion control method of display screen and display terminal - Google Patents
Polarity inversion control method of display screen and display terminal Download PDFInfo
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- CN111540322A CN111540322A CN202010424891.9A CN202010424891A CN111540322A CN 111540322 A CN111540322 A CN 111540322A CN 202010424891 A CN202010424891 A CN 202010424891A CN 111540322 A CN111540322 A CN 111540322A
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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
- G09G3/3614—Control of polarity reversal in general
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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
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
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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
- G09G2230/00—Details of flat display driving waveforms
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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
- 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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Abstract
The application discloses a polarity inversion control method of a display screen and a display terminal. The polarity inversion control method of the display screen is applied to a display terminal of an active matrix drive, the display terminal comprises a register, a source driver and the display screen, the display screen is provided with a plurality of rows of pixel units, and sub-pixels of each row of pixel units are connected with a data line; the register sequentially outputs high potential, low potential, high potential and low potential to each row of pixel units according to columns; the source driver outputs high potential, low potential and high potential to each row of pixel units in sequence according to the columns; the time for the alternating current to be connected into the data line is controlled by each row of pixel units of the display screen according to the relation between the input register and the source driver potential, so that the polarity switching is uniformly distributed, and bright and dark stripes caused by insufficient charging are avoided.
Description
Technical Field
The present invention relates to a display panel driving, and more particularly, to a display panel polarity inversion control method and a display terminal.
Background
Since the liquid crystal molecules of the liquid crystal display have a characteristic, they cannot be fixed at a certain voltage all the time, otherwise, even if the voltage is cancelled for a long time, the liquid crystal molecules cannot rotate any more due to the change of the electric field because of the destruction of the characteristic, so the voltage must be restored to the original state at intervals. In order to ensure the cleanness of liquid crystal molecules of the existing liquid crystal display screen, the liquid crystal molecules are turned over at a certain frequency when the liquid crystal display screen displays a picture, so that the liquid crystal molecules are not fixedly deflected to a certain direction to cause the cleanness loss, and the display voltage in the liquid crystal display screen needs to be divided into two polarities, wherein one polarity is positive and the other polarity is negative. When the voltage of the display electrode is higher than the voltage of the common electrode (common), it is called positive polarity; when the voltage of the display electrode is lower than that of the common electrode, it is called negative polarity. No matter the positive polarity or the negative polarity, the gray scales with the same brightness are displayed, so when the absolute value of the pressure difference between the upper layer glass and the lower layer glass is fixed, the displayed gray scales are the same. However, in both cases, the liquid crystal molecules are turned in the opposite directions, so that the above-described characteristic deterioration caused when the liquid crystal molecules are turned in a direction fixed all the time can be avoided. The same display screen can support a plurality of turning modes, such as dot turning, column turning, row turning and the like. The column turning and row turning modes can be divided into one-line turning, two-line turning, three-line turning and the like according to the column number and the row number of the simultaneous turning, and the normal UD machine is matched with a 1+ 2-line (line) polarity inversion mode to improve the vertical crosstalk.
As shown in fig. 1 and 2, however, the lcd panel is not charged enough due to polarity switching in the gray-scale screen, and thus the horizontal stripes and stripes of the display panel may occur. FIG. 1 is a schematic diagram of an AC charging of a liquid crystal display panel, the AC periodically changing from negative to positive and then negative; ideally, the alternating current changes periodically to form a regular clock signal, but in the actual charging process, when the charging is insufficient due to polarity switching under a gray scale picture, a climbing slope appears at the initial voltage reduction stage and the initial voltage increase stage. FIG. 2 is a gray scale image of the LCD panel, which includes even-numbered rows and odd-numbered rows, and the gray scale image is sequentially arranged with a blue sub-pixel B, a green sub-pixel G, and a red sub-pixel R in rows; in the process of changing alternating current from a negative electrode to a positive electrode, even lines are charged at the initial voltage increasing stage, odd lines are charged at the voltage increasing ending stage, even lines are charged at the initial voltage decreasing stage, odd lines are charged at the voltage decreasing ending stage, and due to the fact that in the actual charging process, when charging is insufficient due to polarity switching under a gray scale picture, climbing slopes can appear at the initial voltage decreasing stage and the initial voltage increasing stage, the climbing slopes appear at the even line charging difference, and the charging is good at the odd lines, so that the odd lines are brighter, and the even lines are darker, so that horizontal stripes appear.
Disclosure of Invention
The application provides a polarity inversion control method and a display terminal of a display screen, which are used for solving the technical problems that when a liquid crystal display screen is matched with a 1+ 2-row (line) polarity inversion mode to improve vertical crosstalk, a gray-scale picture is brighter in an odd-numbered line and darker in an even-numbered line, and cross striations occur.
The embodiment of the application provides a polarity inversion control method of a display screen, which is applied to a display terminal driven by an active matrix, wherein the display terminal comprises a register, a source driver and the display screen, the display screen is provided with a plurality of rows of pixel units, and each row of sub-pixels of the pixel units are connected with a data line, and the polarity inversion control method comprises the following steps: the register sequentially outputs high potential, low potential, high potential and low potential to the pixel units of each row according to columns; the source driver outputs high potential, low potential and high potential to the pixel units of each row in sequence according to columns; and each row of pixel units of the display screen drives the display screen to display pictures in a mode of controlling the position of a wave band where alternating current accessed to a data line is located according to the relation between the input electric potentials of the register and the source driver.
The waveform of the alternating current periodically comprises an initial rising section, a rising ending section, an initial lowering section and a lowering ending section; when the register and the source driver input by a certain row of the pixel units are both high potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the rising ending section, the initial lowering section, the lowering ending section and the initial rising section of the alternating current; when the source driver input by a certain row of the pixel units is at a high potential and the source driver is at a low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the lowering ending section, the initial raising section, the raising ending section and the initial lowering section of the alternating current; when the register and the source driver input by a certain row of the pixel units are both at low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the period of the initial lowering section, the lowering ending section, the initial raising section and the raising ending section of the alternating current; and when the source driver input by the pixel units in a certain row is at a low potential and the source driver is at a high potential, sequentially accessing four continuous data lines positioned in the pixel units in the row according to the period of the initial rising section, the rising ending section, the initial falling section and the falling ending section of the alternating current.
Further, in the polarity inversion control method of the display screen, the sub-pixel of each column of the pixel unit is one of a red sub-pixel, a green sub-pixel or a blue sub-pixel.
Further, in the polarity inversion control method of the display screen, the sub-pixels are sequentially arranged in a circulating manner of red sub-pixels, green sub-pixels and blue sub-pixels according to columns.
Further, in the polarity inversion control method of the display screen, the sub-pixels are sequentially arranged in a circulating manner of red sub-pixels, blue sub-pixels and green sub-pixels according to columns.
Further, in the polarity inversion control method of the display screen, the register is a polarity register along the longitudinal direction, and a 1+2 row polarity inversion mode is adopted.
Another embodiment of the present application provides a display terminal, which includes a display screen, a register, and a source driver; the display screen is provided with a plurality of rows of pixel units driven by an active matrix, and the sub-pixels of each row of the pixel units are connected with a data line; the register is used for sequentially outputting a high potential, a low potential, a high potential and a low potential to the pixel units of each row according to the columns; the source driver is used for sequentially outputting high potential, low potential and high potential to the pixel units of each row according to the columns. Each row of pixel units of the display screen drive the display screen to display pictures in a mode of controlling the position of a wave band where alternating current accessed to a data line is located according to the relation between the input electric potentials of the register and the source driver; the waveform of the alternating current periodically comprises an initial rising section, a rising ending section, an initial falling section and a falling ending section; when the register and the source driver input by a certain row of the pixel units are both high potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the rising ending section, the initial lowering section, the lowering ending section and the initial rising section of the alternating current; when the source driver input by a certain row of the pixel units is at a high potential and the source driver is at a low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the lowering ending section, the initial raising section, the raising ending section and the initial lowering section of the alternating current; when the register and the source driver input by a certain row of the pixel units are both at low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the period of the initial lowering section, the lowering ending section, the initial raising section and the raising ending section of the alternating current; and when the source driver input by the pixel units in a certain row is at a low potential and the source driver is at a high potential, sequentially accessing four continuous data lines positioned in the pixel units in the row according to the period of the initial rising section, the rising ending section, the initial falling section and the falling ending section of the alternating current.
Further, in the display terminal, the sub-pixel of each column of the pixel unit is one of a red sub-pixel, a green sub-pixel or a blue sub-pixel.
Further, in the display terminal, the sub-pixels are sequentially arranged in a cyclic manner of red sub-pixels, green sub-pixels and blue sub-pixels in columns.
Further, in the display terminal, the sub-pixels are sequentially arranged in a cyclic manner of red sub-pixels, blue sub-pixels and green sub-pixels in columns.
Further, in the display terminal, the register is a polarity register along the longitudinal direction, and a polarity inversion mode of 1+2 rows is adopted.
The beneficial effects of the application lie in that, the polarity overturning control method and the display terminal of the display screen are provided, so that the polarity switching is uniformly distributed, and bright and dark stripes caused by insufficient charging are avoided.
Drawings
The technical solutions and other advantages of the present application will become apparent from the following detailed description of specific embodiments of the present application when taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic diagram of ac charging of a conventional lcd.
FIG. 2 is a gray scale image of a conventional LCD.
Fig. 3 is a schematic diagram of charging the display terminal according to the embodiment of the present invention.
FIG. 4 is a schematic diagram of charging waveforms at Data (n) and Data (n +1) at the same time in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive work, are within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "plurality" means two or more unless specifically limited otherwise.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. Additionally, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Specifically, an embodiment of the present application provides a polarity inversion control method for a display screen, which is applied to a display terminal driven by an active matrix, please refer to fig. 3, where the display terminal includes a register, a source driver, and a display screen, the display screen is provided with a plurality of rows of pixel units, and sub-pixels of each row of the pixel units are connected to a data line.
The polarity inversion control method of the display screen comprises the following steps: the register sequentially outputs high potential, low potential, high potential and low potential to the pixel units of each row according to columns; the source driver outputs high potential, low potential and high potential to the pixel units of each row in sequence according to the longitudinal row; and each row of pixel units of the display screen drives the display screen to display pictures in a mode of controlling the position of a wave band where the alternating current accessed to the data line is located according to the relation between the input electric potentials of the register and the source driver.
In this embodiment, the waveform of the alternating current periodically includes an initial rising section, a rising end section, an initial falling section, and a falling end section; the initial rising section and the rising ending section are at positive voltage and are marked as +, and the initial falling section and the falling ending section are at negative voltage and are marked as-. When the register and the source driver input by a certain row of the pixel units are both high-potential, sequentially accessing continuous four Data lines Data (n) -Data (n +4) positioned in the row of the pixel units according to the cycle of the rising ending section, the initial lowering section, the lowering ending section and the initial rising section of the alternating current, namely, sequentially and initially accessing the alternating current to be + - - +, in the continuous four Data lines Data (n) -Data (n +4) of the row of the pixel units; when the source driver input by the pixel unit in a certain row is at a high potential and the source driver is at a low potential, sequentially accessing four continuous Data lines Data (n) -Data (n +4) in the pixel unit in the row according to the cycle of the lowering ending section, the initial raising section, the raising ending section and the initial lowering section of the alternating current, namely, sequentially and initially accessing the alternating current in the four continuous Data lines Data (n) -Data (n +4) in the pixel unit in the row as ++; when the register and the source driver input by a certain row of the pixel units are both at low potential, sequentially accessing four continuous Data lines Data (n) -Data (n +4) positioned in the row of the pixel units according to the period of the initial lowering section, the lowering ending section, the initial raising section and the raising ending section of the alternating current, namely, sequentially and initially accessing the alternating current in the four continuous Data lines Data (n) -Data (n +4) of the row of the pixel units to form — +; when the source driver input by a certain row of the pixel units is at a low potential and the source driver is at a high potential, sequentially accessing continuous four Data lines Data (n) -Data (n +4) positioned in the row of the pixel units according to the period of the initial rising segment, the rising ending segment, the initial falling segment and the falling ending segment of the alternating current, namely, sequentially and initially accessing the alternating current to be + + - - - -, in the continuous four Data lines Data (n) -Data (n +4) of the row of the pixel units. Thus, the + -sign in fig. 3 indicates whether the voltage applied to the alternating current is positive or negative at the same time.
As shown in fig. 4, fig. 4 is a schematic diagram of charging waveforms at Data (n) and Data (n +1) at the same time, the ac power of the initial decreasing segment is initially connected to the Data line Data (n +1), and so on, all the charging waveforms of the four Data lines Data (n) and Data (n +4) can be known, which is not described herein. In fig. 4, the alternating current charged in the data line is periodically changed from a negative electrode to a positive electrode to a negative electrode; ideally, the alternating current periodically changes to be a regular clock signal, but in the actual charging process, when the charging is insufficient due to polarity switching under a gray scale picture, a climbing slope occurs at the initial voltage reduction stage and the initial voltage increase stage. In the embodiment, different waveform periods of alternating current are alternately charged into the continuous four Data lines Data (n) -Data (n +4) of the pixel unit in each row along the transverse direction, so that one sub-pixel unit is well charged, high in potential and high in brightness, and the other sub-pixel unit is poor charged, low in potential and low in brightness between the adjacent sub-pixel units of the pixel unit in each row and the sub-pixel units arranged along the vertical column, so that bright and dark stripes formed along the transverse direction or the vertical column direction are avoided, polarity switching is uniformly distributed, and the bright and dark stripes caused by insufficient charging are avoided.
In this embodiment, in the polarity inversion control method of the display panel, the sub-pixel of each row of the pixel unit is one of a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
In this embodiment, in the polarity inversion control method of the display screen, the subpixels are sequentially arranged in a circular manner of a red subpixel R, a green subpixel G, and a blue subpixel B in rows; or the sub-pixels are sequentially arranged in a circulating mode of adopting a red sub-pixel R, a blue sub-pixel B and a green sub-pixel G according to columns.
In this embodiment, in the polarity inversion control method for the display screen, the register is a polarity register along the longitudinal direction, and a polarity inversion manner of 1+2 rows is adopted.
Another embodiment of the present application provides a display terminal, which includes a display screen, a register, and a source driver; the display screen is provided with a plurality of rows of pixel units driven by an active matrix, and the sub-pixels of each row of the pixel units are connected with a data line; the register is used for sequentially outputting a high potential, a low potential, a high potential and a low potential to the pixel units of each row according to the columns; the source driver is used for sequentially outputting high potential, low potential and high potential to the pixel units of each row according to the columns. Each row of pixel units of the display screen drive the display screen to display pictures in a mode of controlling the position of a wave band where alternating current accessed to a data line is located according to the relation between the input electric potentials of the register and the source driver; the waveform of the alternating current periodically comprises an initial rising section, a rising ending section, an initial falling section and a falling ending section; the initial rising section and the rising ending section are at positive voltage and are recorded as plus, and the initial falling section and the falling ending section are at negative voltage and are recorded as minus. When the register and the source driver input by a certain row of the pixel units are both high-potential, sequentially accessing four continuous Data lines Data (n) -Data (n +4) positioned in the row of the pixel units according to the cycle of the rising ending section, the initial lowering section, the lowering ending section and the initial rising section of the alternating current, namely, sequentially and initially accessing the alternating current to be + - +, in the four continuous Data lines Data (n) -Data (n +4) of the row of the pixel units; when the source driver input by a certain row of the pixel units is at a high potential and the source driver is at a low potential, sequentially accessing four continuous Data lines Data (n) -Data (n +4) in the row of the pixel units according to the cycle of the lowering ending section, the initial raising ending section, the raising ending section and the initial lowering section of the alternating current, namely, sequentially and initially accessing the alternating current to be- + -) in the four continuous Data lines Data (n) -Data (n +4) in the row of the pixel units; when the register and the source driver which are input by a certain row of the pixel units are both low-potential, sequentially accessing four continuous Data lines Data (n) -Data (n +4) which are positioned in the row of the pixel units according to the period of the initial lowering section, the lowering ending section, the initial raising section and the raising ending section of the alternating current, namely, sequentially and initially accessing the alternating current in the four continuous Data lines Data (n) -Data (n +4) of the row of the pixel units to be — +; when the source driver input by the pixel units in a certain row is at a low potential and the source driver is at a high potential, the continuous four Data lines Data (n) -Data (n +4) in the pixel units in the row are sequentially accessed according to the period of the initial rising segment, the rising ending segment, the initial falling segment and the falling ending segment of the alternating current, namely the continuous four Data lines Data (n) -Data (n +4) in the pixel units in the row are sequentially and initially accessed with the alternating current of + + -. Thus, the + -sign in fig. 3 indicates whether the voltage switched on at the same time to the alternating current is positive or negative.
As shown in fig. 4, fig. 4 is schematic diagrams of charging waveforms at Data (n) and Data (n +1) at the same time, and all the charging schematic diagrams of the four continuous Data lines Data (n) -Data (n +4) can be obtained by analogy, which is not described herein. In fig. 4, the alternating current charged in the data line is periodically changed from a negative electrode to a positive electrode to a negative electrode; ideally, the alternating current changes periodically to form a regular clock signal, but in the actual charging process, when the charging is insufficient due to polarity switching under a gray scale picture, a climbing slope appears at the initial voltage reduction stage and the initial voltage increase stage. In this embodiment, different waveform periods of alternating current are alternately charged into the four continuous Data lines Data (n) -Data (n +4) of the pixel unit in each row along the transverse direction, so that one sub-pixel unit is charged well, the potential is high, the brightness is high, and the other sub-pixel unit is charged poorly, the potential is low, and the brightness is low between the adjacent sub-pixel units of the pixel unit in each row and the sub-pixel units arranged along the vertical column.
In this embodiment, in the display terminal, the sub-pixel of each column of the pixel unit is one of a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
The sub-pixels are sequentially arranged in a circulating mode of a red sub-pixel R, a green sub-pixel G and a blue sub-pixel B according to columns; or the sub-pixels are sequentially arranged in a circulating mode of a red sub-pixel R, a blue sub-pixel B and a green sub-pixel G according to columns.
In this embodiment, in the display terminal, the register is a polarity register along the longitudinal direction, and a polarity inversion manner of 1+2 rows is adopted.
The beneficial effects of the application lie in that, the polarity overturning control method and the display terminal of the display screen are provided, so that the polarity switching is uniformly distributed, and bright and dark stripes caused by insufficient charging are avoided.
The polarity inversion control method and the display terminal for the display screen provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to illustrate the principle and implementation manner of the present application, and the description of the embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A polarity inversion control method of a display screen is applied to a display terminal of an active matrix drive, the display terminal comprises a register, a source driver and the display screen, the display screen is provided with a plurality of rows of pixel units, and sub-pixels of each row of the pixel units are connected with a data line, and the polarity inversion control method is characterized by comprising the following steps:
the register sequentially outputs high potential, low potential, high potential and low potential to the pixel units of each row according to columns; the source driver outputs high potential, low potential and high potential to the pixel units of each row in sequence according to columns; and
each row of pixel units of the display screen drives the display screen to display pictures in a mode of controlling the position of a wave band where alternating current accessed to a data line is located according to the relation between the input electric potentials of the register and the source driver;
the waveform of the alternating current periodically comprises an initial rising section, a rising ending section, an initial falling section and a falling ending section;
when the register and the source driver input by a certain row of the pixel units are both high potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the rising ending section, the initial lowering section, the lowering ending section and the initial rising section of the alternating current;
when the source driver input by a certain row of the pixel units is at a high potential and the source driver is at a low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the lowering ending section, the initial raising section, the raising ending section and the initial lowering section of the alternating current;
when the register and the source driver which are input into a certain row of the pixel units are both at low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the period of the initial lowering section, the lowering ending section, the initial raising section and the raising ending section of the alternating current;
and when the source driver input by the pixel units in a certain row is at a low potential and the source driver is at a high potential, sequentially accessing four continuous data lines positioned in the pixel units in the row according to the period of the initial rising section, the rising ending section, the initial falling section and the falling ending section of the alternating current.
2. The method for controlling polarity inversion of a display panel of claim 1, wherein the sub-pixel of each column of the pixel units is one of a red sub-pixel, a green sub-pixel or a blue sub-pixel.
3. The method for controlling polarity inversion of a display panel according to claim 2, wherein the subpixels are arranged in a circular manner of red subpixels, green subpixels, and blue subpixels in sequence.
4. The method for controlling polarity inversion of a display panel according to claim 2, wherein the subpixels are arranged in a circular manner of red subpixels, blue subpixels, and green subpixels in sequence.
5. The method for controlling polarity inversion of a display panel according to claim 1, wherein the register is a polarity register along a longitudinal direction, and a polarity inversion manner of 1+2 rows is adopted.
6. A display terminal, comprising:
the display screen is provided with a plurality of rows of pixel units driven by an active matrix, and the sub-pixels of each row of the pixel units are connected with a data line;
the register is used for sequentially outputting a high potential, a low potential, a high potential and a low potential to the pixel units of each row according to columns; and
the source driver is used for outputting a high potential, a low potential and a high potential to the pixel units of each row in sequence according to the columns;
each row of pixel units of the display screen drive the display screen to display pictures in a mode of controlling the position of a wave band where alternating current accessed to a data line is located according to the relation between the input electric potentials of the register and the source driver; the waveform of the alternating current periodically comprises an initial rising section, a rising ending section, an initial falling section and a falling ending section;
when the register and the source driver input by a certain row of the pixel units are both high potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the rising ending section, the initial lowering section, the lowering ending section and the initial rising section of the alternating current;
when the source driver input by a certain row of the pixel units is at a high potential and the source driver is at a low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the cycle of the lowering ending section, the initial raising section, the raising ending section and the initial lowering section of the alternating current;
when the register and the source driver which are input into a certain row of the pixel units are both at low potential, sequentially accessing four continuous data lines positioned in the row of the pixel units according to the period of the initial lowering section, the lowering ending section, the initial raising section and the raising ending section of the alternating current;
and when the source driver input by the pixel units in a certain row is at a low potential and the source driver is at a high potential, sequentially accessing four continuous data lines positioned in the pixel units in the row according to the period of the initial rising section, the rising ending section, the initial falling section and the falling ending section of the alternating current.
7. The display terminal of claim 6, wherein the sub-pixel of each column of the pixel units is one of a red sub-pixel, a green sub-pixel, or a blue sub-pixel.
8. A display terminal as claimed in claim 7, characterised in that the sub-pixels are arranged in a cyclic manner in columns of red, green and blue sub-pixels in sequence.
9. A display terminal as claimed in claim 7, characterised in that the sub-pixels are arranged in a cyclic manner in columns of red, blue and green sub-pixels.
10. The display terminal of claim 6, wherein the register is a polarity register in a longitudinal direction, and a polarity inversion scheme of 1+2 rows is adopted.
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