CN113744702B - Driving system of liquid crystal display panel - Google Patents
Driving system of liquid crystal display panel Download PDFInfo
- Publication number
- CN113744702B CN113744702B CN202110986306.9A CN202110986306A CN113744702B CN 113744702 B CN113744702 B CN 113744702B CN 202110986306 A CN202110986306 A CN 202110986306A CN 113744702 B CN113744702 B CN 113744702B
- Authority
- CN
- China
- Prior art keywords
- voltage
- pixel
- driving module
- data driving
- delta
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
Landscapes
- 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)
Abstract
The invention relates to a driving system of a liquid crystal display panel, which comprises the liquid crystal display panel, a driving unit and a driving unit, wherein the liquid crystal display panel is used for displaying images; the display circuit is connected with the liquid crystal display panel and provides voltage for the liquid crystal display panel; a data driving module connected to the display circuit, the data driving module including: the scanning unit is used for scanning each pixel coordinate of the display image and a voltage value corresponding to each pixel coordinate, the voltage compensation unit is used for determining the brightness uniformity of the display image according to the position of each pixel coordinate, and the response compensation unit is used for accelerating the running speed of liquid crystal molecules; and the data driving module adjusts the voltage of each pixel according to the pixel coordinate of the display image scanned by the scanning unit and the voltage value of each pixel coordinate so as to control the system to operate. According to the invention, the display condition of each pixel is accurately controlled, and the compensation weight is calculated to adjust the voltage of each pixel, so that the uniformity of the displayed image can be ensured, and the definition of the displayed image is improved.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a driving system of a liquid crystal display panel.
Background
Liquid crystal display panels play an increasingly important role in life today, and the realization of their display functions requires complex display driving systems. Since the manufacturing process of the liquid crystal display panel is complicated, some defects in the manufacturing process easily cause non-uniform display brightness of the produced liquid crystal display panel, and various moire (Mura) is formed, thereby affecting the display effect of the liquid crystal display panel. In order to improve the brightness uniformity of the liquid crystal display panel, a voltage adjusting mode is mostly adopted in the prior art, but the voltage is not well grasped in the adjusting process, so that the problem of uneven brightness of the liquid crystal display panel is caused.
Disclosure of Invention
Therefore, the invention provides a driving system of a liquid crystal display panel, which is used for overcoming the problem that the brightness of the liquid crystal display panel is not uniform because the voltage adjustment quantity cannot be obtained according to the compensation weight in the adjustment process in the prior art.
To achieve the above object, the present invention provides a driving system of a liquid crystal display panel, comprising,
a liquid crystal display panel for displaying an image;
the display circuit is connected with the liquid crystal display panel and provides voltage for the liquid crystal display panel;
the data driving module is connected with the display circuit and comprises a scanning unit, a voltage compensation unit and a response compensation unit, wherein the scanning unit is used for acquiring each pixel coordinate of the display image and a voltage value corresponding to each pixel coordinate, the voltage compensation unit is used for determining the brightness uniformity of the display image according to the position of each pixel coordinate, and the response compensation unit is used for accelerating the running speed of liquid crystal molecules; the data driving module adjusts the voltage of each pixel according to the pixel coordinate of the display image and the voltage value of each pixel coordinate acquired by the scanning unit so as to enable the brightness uniformity of the display image to meet a preset standard;
the data driving module is preset with standard voltage values U0i corresponding to each pixel coordinate, i is set to be 1,2, 3.. said, n is set as the number of pixels, when an image is displayed, the scanning unit acquires an actual voltage value Ui of each pixel coordinate and sends the acquired data to the data driving module, the data driving module compares the actual voltage value Ui of each pixel coordinate with the standard voltage value U0i corresponding to each pixel coordinate, the pixel voltage compensation unit calculates compensation weight according to the comparison result and sends the calculated data to the data driving module, the data driving module adjusts each pixel voltage to a corresponding value according to the compensation weight, wherein n is a natural number more than or equal to 3;
the scanning unit acquires an image actual gray scale Y and sends the data to the data driving module, and the data driving module compares the image actual gray scale Y with a preset standard gray scale Y0 and corrects the standard voltage value U0i according to a comparison result.
Further, when an image is displayed, the scanning unit acquires an actual voltage value Ui of each pixel coordinate and sends the acquired data to the data driving module, and the data driving module compares the actual voltage value Ui of each pixel coordinate with a standard voltage value U0i corresponding to each pixel coordinate and judges whether each pixel voltage meets the standard according to the comparison result;
standard voltage values U0i corresponding to pixel coordinates are preset in the data driving module, the standard voltage values include a first standard voltage value U1i and a second standard voltage value U2i, wherein U1i is less than U2 i;
if Ui is less than U1i, the data driving module determines that the pixel voltage values do not meet the standard, the pixel voltage compensation module calculates a compensation weight R to increase the pixel voltage values to corresponding values, the data driving module marks the adjusted pixel voltage values as Uai, and the voltage values are set to be Uai-U0 i + U0i × R;
if the Ui is more than or equal to U1i and less than or equal to U2i, the data driving module judges that the voltage value of each pixel meets the standard.
Further, the compensation weight R is calculated by the following formula in each pixel voltage compensation unit, and is set to be | U0i-Ui |/Ui.
Further, when an image is displayed, the scanning unit acquires a voltage value Ui 'of an image on each pixel and sends the data to the data driving module, and the data driving module compares the voltage value Ui' of the image on each pixel with a voltage value Ui of each pixel point of a current image and judges whether to adjust the voltage value according to a comparison result so as to accelerate the operation speed of liquid crystal molecules;
if Ui' is not less than Ui, the data driving module judges that the voltage value of each pixel point meets the standard and does not adjust the voltage value of each pixel point;
if Ui' is less than Ui, the data driving module judges that the voltage value of each pixel point does not accord with the standard and adjusts the voltage value to accelerate the running speed of liquid crystal molecules.
Further, when the data driving module determines that the voltage value of each pixel needs to be adjusted, the response compensation module calculates a voltage value difference value Δ U and sends the difference value to the data driving module, the data driving module sets the difference value Δ U to | Ui' -Ui |, and the data driving module selects a corresponding compensation voltage Δ W according to the difference value to adjust the voltage of each pixel to a corresponding value;
the data driving module is also provided with a first voltage difference delta U1, a second voltage difference delta U2, a third voltage difference delta U3, a first compensation voltage delta W1, a second compensation voltage delta W2, a third compensation voltage delta W3 and a fourth compensation voltage delta W4, wherein delta U1 < [ delta ] U2 < [ delta ] U, delta W1 < [ delta ] W2 < [ delta ] W3 < [ delta ] W4;
if the delta U is less than the delta U1, the data driving module selects a first compensation voltage delta W1 to increase each pixel voltage to a corresponding value;
if the delta U1 is more than or equal to delta U2, the data driving module selects a second compensation voltage delta W2 to increase the voltage of each pixel to a corresponding value;
if the delta U2 is more than or equal to delta U3, the data driving module selects a third compensation voltage delta W3 to increase the voltage of each pixel to a corresponding value;
if the delta U is not less than the delta U3, the data driving module selects a fourth compensation voltage delta W4 to increase each pixel voltage to a corresponding value;
when the j-th compensation voltage selected by the data driving module increases the corresponding value of each pixel voltage value, setting j to 1,2,3, 4, and the data driving module records the adjusted total voltage as Ubi, which is Uai +. DELTA.Wj, where Uai is the adjusted voltage value of each pixel.
Further, the data driving module is further provided with a pixel total voltage maximum value Uimax, when the data driving module adjusts the pixel total voltage to Ubi, the data driving module compares the pixel total voltage Ubi with the pixel total voltage maximum value Uimax, and if Ubi is greater than Uimax, the data driving module adjusts the pixel total voltage to Uimax: and if Ubi is less than or equal to Uimax, the data driving module adjusts the total voltage of the pixels to Ubi.
Further, when the data driving module adjusts the pixel voltage to Uai, the data driving module compares the total pixel voltage Uai with the maximum total pixel voltage Uimax, if Uai > Uimax, the data driving module adjusts the pixel voltage to Uimax, and the scanning module does not scan the voltage value of an image on each pixel: if Uai is not greater than Uimax, the data driving module adjusts the voltage of each pixel to Uai, and the scanning module scans the voltage value of an image on each pixel.
Further, the data driving module is preset with a standard gray level Y0, when an image is displayed, the scanning unit scans an actual gray level Y of the image and sends the data to the data driving module, the data driving module corrects the standard voltage value U0i according to the actual gray level Y, and the data driving module marks the corrected standard voltage value as U0i ', and sets U0 i' to U0i × Y/Y0.
Further, the data driving module is further provided with a pixel coordinate Q, Qi (Xi, Yi) is set, where Xi is the coordinate of the pixel on the X axis, Yi is the coordinate of the pixel on the Y axis, and when the data driving module calculates the standard voltage value U0i, the data driving module is set to be in the setting
Wherein, X0 is the coordinate of the center point X axis of the pixel, Y0 is the coordinate of the center point Y axis of the pixel, and U0 is the ideal voltage value of each pixel.
Compared with the prior art, the invention has the advantages that the invention scans each pixel coordinate of the display image and the voltage value corresponding to each pixel coordinate through the scanning unit, the data driving module compares the actual voltage value Ui of each pixel coordinate with the standard voltage value U0i corresponding to each pixel coordinate, the pixel voltage compensation units calculate the compensation weight according to the comparison result, by comparing the actual voltage value Ui of each pixel coordinate with the standard voltage value U0i corresponding to each pixel coordinate, the display condition of each pixel can be accurately controlled, the voltage of each pixel can be adjusted by calculating the compensation weight, the uniformity of the displayed image can be ensured, the definition of the displayed image is improved, meanwhile, the display condition of each pixel can be accurately controlled by establishing a pixel coordinate system of the display image, and the uniformity of the display image is further improved.
In particular, the data driving module is preset with a standard voltage value U0i corresponding to each pixel coordinate, the standard voltage value includes a first standard voltage value U1i and a second standard voltage value U2i, the display condition of each pixel can be accurately mastered by comparing the actual voltage value of the pixel with the standard voltage value, the compensation weight is calculated by each pixel voltage compensation module to adjust the voltage value of each pixel, each pixel can operate in the state of the standard voltage value, meanwhile, the brightness of each pixel can meet the standard, the uniformity of the display image is further ensured, the definition of the display image is improved, and meanwhile, the display condition of each pixel can be accurately controlled by establishing a display image pixel coordinate system, so that the uniformity of the display image is further improved.
Particularly, the scanning unit scans the voltage value Ui 'of an image on each pixel and sends the data to the data driving module, the data driving module compares the voltage value Ui' of an image on each pixel with the voltage value Ui of the current image, and the data driving module compares different picture voltage values of the same pixel, so that the change condition of the voltage of the same pixel can be accurately mastered.
Further, when the data driving module judges that the voltage value of each pixel point needs to be adjusted, the response compensation module calculates the voltage value difference value delta U and sends the difference value to the data driving module, the voltage is adjusted by calculating the voltage value difference value, the liquid crystal molecule response speed of the liquid level display panel can be increased by adjusting the secondary adjustment voltage value and selecting the compensation voltage mode, the definition of a displayed image can be improved, the gray scale of the displayed image is further ensured, and the uniformity of the displayed image is further improved.
Furthermore, the data driving module is further provided with a maximum value Uimax of the total pixel voltage, the data driving module compares the total pixel voltage Uai and the total pixel voltage Ubi with the maximum value Uimax of the total pixel voltage, the operation condition of each pixel of the image can be accurately controlled through the comparison of the pixel voltages, when the pixel voltages reach the total pixel voltage, the pixel voltages are not regulated, so that the pixels work under safe voltage values, the safety of the liquid crystal display panel can be ensured, the definition of the displayed image is further improved, the gray scale of the displayed image is further ensured, and the uniformity of the displayed image is further improved.
Drawings
FIG. 1 is a schematic diagram of a driving system of a liquid crystal display panel according to the present invention;
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and do not delimit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Fig. 1 is a schematic structural diagram of a driving system of a liquid crystal display panel according to an embodiment of the present invention, including,
a liquid crystal display panel for displaying an image;
the display circuit is connected with the liquid crystal display panel and provides voltage for the liquid crystal display panel;
the data driving module is connected with the display circuit and comprises a scanning unit, a voltage compensation unit and a response compensation unit, wherein the scanning unit is used for acquiring each pixel coordinate of the display image and a voltage value corresponding to each pixel coordinate, the voltage compensation unit is used for determining the brightness uniformity of the display image according to the position of each pixel coordinate, and the response compensation unit is used for accelerating the running speed of liquid crystal molecules; the data driving module adjusts the voltage of each pixel according to the pixel coordinates of the display image and the voltage value of each pixel coordinate acquired by the scanning unit so as to enable the brightness uniformity of the display image to meet a preset standard;
the data driving module is preset with standard voltage values U0i corresponding to each pixel coordinate, i is set to be 1,2,3,.. the., n is set as the number of pixels, when an image is displayed, the scanning unit acquires an actual voltage value Ui of each pixel coordinate and sends the acquired data to the data driving module, the data driving module compares the actual voltage value Ui of each pixel coordinate with the standard voltage value U0i corresponding to each pixel coordinate, each pixel voltage compensation unit calculates compensation weight according to the comparison result and sends the calculated data to the data driving module, and the data driving module adjusts each pixel voltage to a corresponding value according to the compensation weight, wherein n is a natural number which is more than or equal to 3;
the scanning unit acquires an image actual gray scale Y and sends the data to the data driving module, and the data driving module compares the image actual gray scale Y with a preset standard gray scale Y0 and corrects the standard voltage value U0i according to a comparison result.
Specifically, the scanning unit scans each pixel coordinate of the display image and the voltage value corresponding to each pixel coordinate, the data driving module compares the actual voltage value Ui of each pixel coordinate with the standard voltage value U0i corresponding to each pixel coordinate, the pixel voltage compensation unit calculates the compensation weight according to the comparison result, the actual voltage value Ui of each pixel coordinate is compared with the standard voltage value U0i corresponding to each pixel coordinate, the display condition of each pixel can be accurately controlled, the compensation weight is calculated to adjust each pixel voltage, the uniformity of the display image can be ensured, the definition of the display image is improved, meanwhile, the display condition of each pixel can be accurately controlled by establishing a display image pixel coordinate system, and the uniformity of the display image is further improved.
Specifically, when an image is displayed, the scanning unit acquires an actual voltage value Ui of each pixel coordinate and sends the acquired data to the data driving module, and the data driving module compares the actual voltage value Ui of each pixel coordinate with a standard voltage value U0i corresponding to each pixel coordinate and judges whether each pixel voltage meets the standard according to the comparison result;
standard voltage values U0i corresponding to pixel coordinates are preset in the data driving module, and the standard voltage values include a first standard voltage value U1i and a second standard voltage value U2i, wherein U1i is more than U2 i;
if Ui is less than U1i, the data driving module determines that the pixel voltage values do not meet the standard, the pixel voltage compensation module calculates compensation weights R to increase the pixel voltage values to corresponding values, the data driving module records the adjusted pixel voltage values as Uai, and Uai is set as U0i + U0i × R;
if U1i is not less than Ui is not less than U2i, the data driving module judges that the voltage value of each pixel meets the standard.
Specifically, the standard voltage values U0i corresponding to the pixel coordinates are preset in the data driving module, and the standard voltage values include a first standard voltage value U1i and a second standard voltage value U2 i.
Specifically, the pixel voltage compensation means calculates the compensation weight R by using the following equation, and sets R ═ U0i-Ui |/Ui.
Specifically, when an image is displayed, the scanning unit acquires the voltage value Ui 'of an image on each pixel and sends the data to the data driving module, and the data driving module compares the voltage value Ui' of an image on each pixel with the voltage value Ui of each pixel point of the current image and judges whether to adjust the voltage value according to the comparison result so as to accelerate the operation speed of liquid crystal molecules;
if Ui' is not less than Ui, the data driving module judges that the voltage value of each pixel point meets the standard and does not adjust the voltage value of each pixel point;
if Ui' is less than Ui, the data driving module judges that the voltage value of each pixel point does not accord with the standard and adjusts the voltage value to accelerate the running speed of liquid crystal molecules.
Specifically, the scanning unit scans the voltage value Ui 'of an image on each pixel and sends the data to the data driving module, the data driving module compares the voltage value Ui' of an image on each pixel with the voltage value Ui of the current image, and the data driving module compares different picture voltage values of the same pixel, so that the response speed of the liquid level display panel can be guaranteed, the definition of a displayed image can be improved, the gray scale of the displayed image is further guaranteed, and the uniformity of the displayed image is further improved.
Specifically, when the data driving module determines that the voltage value of each pixel needs to be adjusted, the response compensation module calculates a voltage value difference Δ U and sends the difference to the data driving module, the Δ U is set to be | Ui' -Ui |, and the data driving module selects a corresponding compensation voltage Δ W according to the difference to adjust the voltage of each pixel to a corresponding value;
the data driving module is also provided with a first voltage difference value delta U1, a second voltage difference value delta U2, a third voltage difference value delta U3, a first compensation voltage delta W1, a second compensation voltage delta W2, a third compensation voltage delta W3 and a fourth compensation voltage delta W4, wherein delta U1 < [ delta ] U2 < [ delta ] U, and delta W1 < [ delta ] W2 < [ delta ] W3 < [ delta ] W4;
if the delta U is less than the delta U1, the data driving module selects a first compensation voltage delta W1 to increase each pixel voltage to a corresponding value;
if the delta U is more than or equal to delta U1 and less than delta U2, the data driving module selects a second compensation voltage delta W2 to increase the voltage of each pixel to a corresponding value;
if the delta U2 is more than or equal to delta U3, the data driving module selects a third compensation voltage delta W3 to increase the voltage of each pixel to a corresponding value;
if the delta U is not less than the delta U3, the data driving module selects a fourth compensation voltage delta W1 to increase each pixel voltage to a corresponding value;
when the j-th compensation voltage selected by the data driving module increases the corresponding value of each pixel voltage value, setting j to be 1,2,3 and 4, and recording the regulated total voltage as Ubi to be Uai +. DELTA.Wj by the data driving module.
Specifically, when the data driving module determines that the voltage value of each pixel point needs to be adjusted, the response compensation module calculates the voltage value difference Δ U and sends the difference to the data driving module, the voltage is adjusted by calculating the voltage value difference, and the response speed of the liquid level display panel can be increased by adjusting the secondary adjustment voltage value, so that the definition of a displayed image can be improved, the gray scale of the displayed image is further ensured, and the uniformity of the displayed image is further improved.
Specifically, the data driving module is further provided with a maximum value Uimax of the total pixel voltage, when the data driving module adjusts the total pixel voltage to Ubi, the data driving module compares the total pixel voltage Ubi with the maximum value Uimax of the total pixel voltage, and if Ubi is greater than Uimax, the data driving module adjusts the total pixel voltage to Uimax: and if Ubi is less than or equal to Uimax, the data driving module adjusts the total voltage of the pixels to Ubi.
Specifically, when the data driving module adjusts each pixel voltage to Uai, the data driving module compares each pixel voltage Uai with a maximum value Uimax of a total pixel voltage, if Uai > Uimax, the data driving module adjusts each pixel voltage to Uimax, and the scanning module does not scan a voltage value of an image on each pixel: if Uai is less than or equal to Uimax, the data driving module adjusts the voltage of each pixel to Uai, and the scanning module scans the voltage value of an image on each pixel.
Specifically, the data driving module is further provided with a maximum value Uimax of the total pixel voltage, the data driving module compares the pixel voltage Uai and the total pixel voltage Ubi with the maximum value Uimax of the total pixel voltage respectively, the operation condition of each pixel of the image can be accurately controlled through comparison of the pixel voltages, the response speed of the liquid level display panel can be guaranteed through adjustment of the voltage, the definition of the displayed image can be improved, the gray scale of the displayed image is further guaranteed, and the uniformity of the displayed image is further improved.
Specifically, the data driving module is preset with a standard gray scale Y0, when an image is displayed, the scanning unit obtains an actual gray scale Y of the image and sends the data to the data driving module, the data driving module corrects the standard voltage value U0i according to the actual gray scale Y, and the data driving module records the corrected standard voltage value as U0i ', and sets U0 i' to U0i × Y/Y0.
Particularly, the gray scale of the picture is scanned in real time through the scanning unit, the data driving unit can adjust the standard voltage value according to the needs of an actual user, the actual requirements of different users can be met, the operation condition of each pixel of the image can be accurately controlled by adjusting the standard voltage value, the response speed of the liquid level display panel can be guaranteed through the adjustment of the voltage, the definition of the displayed image can be improved, the gray scale of the displayed image is further guaranteed, and the uniformity of the displayed image is further improved.
Specifically, the data driving module is further provided with a pixel coordinate Q, Qi (Xi, Yi) is set, where Xi is a coordinate of the ith pixel point on an X axis, Yi is a coordinate of the ith pixel point on a Y axis, and when the data driving module calculates a standard voltage value U0i, the data driving module is set to calculate the standard voltage value
Wherein, X0 is the coordinate of the pixel center point X axis, Y0 is the coordinate of the pixel center point Y axis, and U0 is the ideal voltage value of each pixel.
With reference to fig. 1, the driving system of the liquid crystal display panel includes a liquid crystal display panel, a display circuit, and a data driving module, the data driving module is connected to the display circuit, and the data driving module includes: the liquid crystal display comprises a scanning unit, a voltage compensation unit and a response compensation unit, wherein the scanning unit is used for scanning each pixel coordinate of the display image and a voltage value corresponding to each pixel coordinate, the voltage compensation unit is used for determining the brightness uniformity of the display image according to the position of each pixel coordinate, and the response compensation unit is used for accelerating the running speed of liquid crystal molecules.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (7)
1. A driving system of a liquid crystal display panel includes,
a liquid crystal display panel for displaying an image;
the display circuit is connected with the liquid crystal display panel and provides voltage for the liquid crystal display panel;
the data driving module is connected with the display circuit and comprises a scanning unit, a voltage compensation unit and a response compensation unit, wherein the scanning unit is used for acquiring each pixel coordinate of the display image and a voltage value corresponding to each pixel coordinate, the voltage compensation unit is used for determining the brightness uniformity of the display image according to the position of each pixel coordinate, and the response compensation unit is used for accelerating the running speed of liquid crystal molecules; the data driving module adjusts the voltage of each pixel according to the pixel coordinate of the display image and the voltage value of each pixel coordinate acquired by the scanning unit so as to enable the brightness uniformity of the display image to meet a preset standard;
the data driving module is preset with standard voltage values U0i corresponding to each pixel coordinate, i is set to be 1,2, 3.. said, n is set as the number of pixels, when an image is displayed, the scanning unit acquires an actual voltage value Ui of each pixel coordinate and sends the acquired data to the data driving module, the data driving module compares the actual voltage value Ui of each pixel coordinate with the standard voltage value U0i corresponding to each pixel coordinate, the pixel voltage compensation unit calculates compensation weight according to the comparison result and sends the calculated data to the data driving module, the data driving module adjusts each pixel voltage to a corresponding value according to the compensation weight, wherein n is a natural number more than or equal to 3;
the scanning unit acquires an image actual gray scale Y and sends the data to the data driving module, and the data driving module compares the image actual gray scale Y with a preset standard gray scale Y0 and corrects the standard voltage value U0i according to a comparison result;
the scanning unit acquires an actual voltage value Ui of each pixel coordinate when an image is displayed and sends the acquired data to the data driving module, and the data driving module compares the actual voltage value Ui of each pixel coordinate with a standard voltage value U0i corresponding to each pixel coordinate and judges whether each pixel voltage meets the standard or not according to the comparison result;
standard voltage values U0i corresponding to pixel coordinates are preset in the data driving module, and the standard voltage values include a first standard voltage value U1i and a second standard voltage value U2i, wherein U1i is more than U2 i;
if Ui is less than U1i, the data driving module determines that the pixel voltage values do not meet the standard, the pixel voltage compensation module calculates a compensation weight R to increase the pixel voltage values to corresponding values, the data driving module marks the adjusted pixel voltage values as Uai, and the voltage values are set to be Uai-U0 i + U0i × R;
if the voltage value of each pixel is more than or equal to U1i and less than or equal to U2i, the data driving module judges that the voltage value of each pixel meets the standard;
each pixel voltage compensation unit calculates a compensation weight R by using the following equation, and sets R to | U0i-Ui |/Ui.
2. The driving system of the liquid crystal display panel according to claim 1, wherein when displaying an image, the scanning unit obtains a voltage value Ui 'of an image on each pixel and sends the data to the data driving module, and the data driving module compares the voltage value Ui' of the image on each pixel with a voltage value Ui of each pixel of a current image and determines whether to adjust the voltage value to accelerate the operation speed of liquid crystal molecules according to a comparison result;
if Ui' is more than or equal to Ui, the data driving module judges that the voltage value of each pixel point meets the standard and does not adjust the voltage value of each pixel point;
if Ui' is less than Ui, the data driving module judges that the voltage value of each pixel point does not accord with the standard and adjusts the voltage value to accelerate the running speed of liquid crystal molecules.
3. The driving system of the lcd panel according to claim 2, wherein when the data driving module determines that the voltage value of each pixel needs to be adjusted, the response compensation module calculates a voltage value difference Δ U and sends the difference to the data driving module, and sets Δ U ═ Ui' -Ui |, and the data driving module selects a corresponding compensation voltage Δ W according to the difference to adjust the voltage value of each pixel to a corresponding value;
the data driving module is also provided with a first voltage difference value delta U1, a second voltage difference value delta U2, a third voltage difference value delta U3, a first compensation voltage delta W1, a second compensation voltage delta W2, a third compensation voltage delta W3 and a fourth compensation voltage delta W4, wherein delta U1 < [ delta ] U2 < [ delta ] U, and delta W1 < [ delta ] W2 < [ delta ] W3 < [ delta ] W4;
if the delta U is less than the delta U1, the data driving module selects a first compensation voltage delta W1 to increase each pixel voltage to a corresponding value;
if the delta U1 is more than or equal to delta U2, the data driving module selects a second compensation voltage delta W2 to increase the voltage of each pixel to a corresponding value;
if the delta U is more than or equal to delta U2 and less than delta U3, the data driving module selects a third compensation voltage delta W3 to increase the voltage of each pixel to a corresponding value;
if the delta U is more than or equal to the delta U3, the data driving module selects a fourth compensation voltage delta W4 to increase the pixel voltage to a corresponding value;
when the j-th compensation voltage selected by the data driving module increases the corresponding value of each pixel voltage value, setting j to 1,2,3, 4, and the data driving module records the adjusted total voltage as Ubi, which is Uai +. DELTA.Wj, where Uai is the adjusted voltage value of each pixel.
4. The driving system of the LCD panel according to claim 3, wherein the data driving module further provides a maximum voltage Uimax of pixels, when the data driving module adjusts the total voltage of each pixel to Ubi, the data driving module compares the total voltage Ubi with the maximum voltage Uimax of pixels, and if Ubi > Uimax, the data driving module adjusts the total voltage of pixels to Uimax: and if Ubi is less than or equal to Uimax, the data driving module adjusts the total voltage of the pixels to Ubi.
5. The driving system of LCD panel of claim 4, wherein when the data driving module adjusts the pixel voltage to Uai, the data driving module compares the total voltage Uai with the maximum Uimax of the total voltage, if Uai > Uimax, the data driving module adjusts the pixel voltage to Uimax, and the scanning module does not obtain the voltage value of an image on each pixel: if Uai is not greater than Uimax, the data driving module adjusts the voltage of each pixel to Uai, and the scanning module scans the voltage value of an image on each pixel.
6. The driving system of LCD panel according to claim 5, wherein the data driving module is further preset with a standard gray level Y0, when displaying an image, the scanning unit obtains an actual gray level Y of the image and sends the data to the data driving module, the data driving module corrects the standard voltage value U0i according to the actual gray level Y, the data driving module records the corrected standard voltage value as U0i ', and sets U0 i' to U0i x Y/Y0.
7. The driving system of LCD panel according to claim 6, wherein the data driving module further comprises pixel coordinates Q, set Qi (Xi, Yi), where Xi is the coordinate of the ith pixel point on the X-axis, Yi is the coordinate of the ith pixel point on the Y-axis, and when the data driving module calculates the standard voltage value U0i, set Qi (Xi, Yi) to be the pixel coordinates Q
Wherein, X0 is the coordinate of the center point X axis of the pixel, Y0 is the coordinate of the center point Y axis of the pixel, and U0 is the ideal pixel voltage value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986306.9A CN113744702B (en) | 2021-08-26 | 2021-08-26 | Driving system of liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110986306.9A CN113744702B (en) | 2021-08-26 | 2021-08-26 | Driving system of liquid crystal display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113744702A CN113744702A (en) | 2021-12-03 |
| CN113744702B true CN113744702B (en) | 2022-07-22 |
Family
ID=78733171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110986306.9A Active CN113744702B (en) | 2021-08-26 | 2021-08-26 | Driving system of liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113744702B (en) |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3473600B2 (en) * | 2000-12-01 | 2003-12-08 | セイコーエプソン株式会社 | Liquid crystal display device, image data correction circuit, image data correction method, and electronic device |
| CN101398584B (en) * | 2007-09-27 | 2010-08-11 | 北京京东方光电科技有限公司 | Method for driving LCD device |
| US8508449B2 (en) * | 2008-12-18 | 2013-08-13 | Sharp Corporation | Adaptive image processing method and apparatus for reduced colour shift in LCDs |
| CN102568430A (en) * | 2012-03-06 | 2012-07-11 | 深圳市华星光电技术有限公司 | Driving method for liquid crystal panel, display driving circuit and liquid crystal display device |
| US20130235011A1 (en) * | 2012-03-06 | 2013-09-12 | Poshen Lin | LCD Panel Driving Method, Display Drive Circuit, and LCD Device |
| KR101985502B1 (en) * | 2012-07-04 | 2019-06-04 | 삼성디스플레이 주식회사 | Display device, control device for driving the display device, and drive control method thereof |
| US20150235619A1 (en) * | 2014-02-18 | 2015-08-20 | Samsung Display Co., Ltd. | Method of driving light source module and display device using the method |
| CN103943080B (en) * | 2014-03-06 | 2016-08-17 | 京东方科技集团股份有限公司 | A kind of display device pixel intensity compensating control method and device |
| CN107610649B (en) * | 2017-10-26 | 2020-03-06 | 上海天马有机发光显示技术有限公司 | Optical compensation method and device of display panel |
| CN108877678A (en) * | 2018-09-10 | 2018-11-23 | 深圳创维－Rgb电子有限公司 | Image display method, device, display equipment and medium based on pixel compensation |
| CN109003583A (en) * | 2018-09-18 | 2018-12-14 | 惠科股份有限公司 | Display device and driving method thereof |
| CN111199717B (en) * | 2018-11-19 | 2022-03-11 | 深圳Tcl新技术有限公司 | Mura compensation method and system for liquid crystal display screen and storage medium |
| CN110021267B (en) * | 2019-03-07 | 2021-01-26 | 京东方科技集团股份有限公司 | Method and device for compensating brightness uniformity of display panel |
| CN113228152B (en) * | 2019-05-17 | 2022-09-09 | 华为技术有限公司 | Device and method for controlling screen brightness |
| KR20210017463A (en) * | 2019-08-08 | 2021-02-17 | 엘지디스플레이 주식회사 | Display device |
| CN110660369B (en) * | 2019-09-06 | 2022-05-20 | 北京集创北方科技股份有限公司 | Display driving method, source electrode driving circuit, driving chip and display device |
| CN110890065B (en) * | 2019-11-01 | 2021-04-27 | 深圳市华星光电半导体显示技术有限公司 | Control method and control device of display panel |
| CN110942754A (en) * | 2019-11-26 | 2020-03-31 | Tcl华星光电技术有限公司 | Data compensation method and pixel compensation device |
| CN111986120A (en) * | 2020-09-15 | 2020-11-24 | 天津师范大学 | Low-illumination image enhancement optimization method based on frame accumulation and multi-scale Retinex |
| CN112950657A (en) * | 2021-03-29 | 2021-06-11 | 合肥京东方显示技术有限公司 | Gamma value correction method, gamma value correction device, electronic device, and readable storage medium |
-
2021
- 2021-08-26 CN CN202110986306.9A patent/CN113744702B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113744702A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7782288B2 (en) | Liquid crystal display apparatus | |
| CN101542581B (en) | Liquid crystal display apparatus and liquid crystal panel driving method | |
| KR102254540B1 (en) | Curved display and a driving method of the same | |
| US8013878B2 (en) | Apparatus for automatically setting over-driving look-up table for liquid crystal display device and control method thereof | |
| CN101192384B (en) | LCD device gamma correction table creation method | |
| CN103259996A (en) | Display system, display apparatus, and method for controlling display system | |
| US20220165220A1 (en) | Grayscale data compensation method and apparatus and driver chip | |
| CN102802001B (en) | Method and device for reducing dynamic crosstalk of shutter type 3D liquid crystal display and liquid crystal display | |
| US20130100182A1 (en) | Compensation method for privacy-image protection | |
| CN109192170B (en) | Feed-through compensation method and device of display panel and display device | |
| CN106328030B (en) | Correction method and display device | |
| CN105825840A (en) | Optical compensating method and device and display panel | |
| CN108376532A (en) | A kind of luminance compensation method and device of display device | |
| US20230058388A1 (en) | Gamma debugging method and apparatus | |
| CN109377967A (en) | Display panel correction method and display device | |
| CN106251797A (en) | A kind of gamma-debugged method and device of display floater | |
| US20210225318A1 (en) | Method for eliminating residual image in liquid crystal display panel | |
| CN115223513B (en) | Liquid crystal display panel and compensation method thereof | |
| CN113744702B (en) | Driving system of liquid crystal display panel | |
| CN101577096B (en) | Method for adjusting common voltage of liquid crystal display device | |
| CN114299891B (en) | Display panel driving method, driver and display device | |
| CN102821294A (en) | Method and device for reducing shutter-type 3D (three dimensional) liquid-crystal display crosstalk and liquid crystal display | |
| US10419708B2 (en) | Image processing circuit and image contrast enhancement method thereof | |
| JP2008147889A (en) | Image processor and method thereof | |
| CN113990267A (en) | Pixel brightness compensation method and device, storage medium and display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220509 Address after: No. 118, Jinghai 1st Road, Daxing District, Beijing 100176 Applicant after: BOE TECHNOLOGY GROUP Co.,Ltd. Applicant after: BEIJING BOE DISPLAY TECHNOLOGY Co.,Ltd. Address before: 300499 No. 209, building 1, Beichen building, Beijing Tianjin highway, BeiCang Town, Beichen District, Tianjin Applicant before: Cai Ting |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |