CN116778847B - Method for controlling display panel to display pictures, time sequence control circuit and display device - Google Patents
Method for controlling display panel to display pictures, time sequence control circuit and display device Download PDFInfo
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- CN116778847B CN116778847B CN202311086269.1A CN202311086269A CN116778847B CN 116778847 B CN116778847 B CN 116778847B CN 202311086269 A CN202311086269 A CN 202311086269A CN 116778847 B CN116778847 B CN 116778847B
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- 238000001514 detection method Methods 0.000 description 14
- 230000004913 activation Effects 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- 230000010365 information processing Effects 0.000 description 3
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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
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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
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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Abstract
The application provides a method for controlling a display panel to display pictures, a time sequence control circuit and a display device. The display panel comprises a display area, and the display area is used for displaying pictures; the method for controlling the display panel to display the picture comprises the steps of driving the display panel to display a first picture in a first driving mode; dividing the display area into a plurality of sub-display areas; detecting an abnormal graphic unit contained in a second picture to be displayed corresponding to each sub-display area; judging whether the areas of a plurality of continuous abnormal graphic units contained in a second picture to be displayed corresponding to each sub-display area reach a first preset threshold value or not; and in response to the duty ratio of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode. The method not only reduces the possibility of starting the second driving mode by mistake, but also reduces the risk of not starting the second driving mode, and avoids influencing the display function.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a method for controlling a display panel to display a picture, a timing control circuit, and a display device.
Background
The PDF full scale Pattern detection function refers to an image quality detection function. The function changes the driving mode of the liquid crystal display panel after detecting the abnormal pattern of the special pixel, thereby correcting the abnormal display problem of the pixel pattern.
The conventional TCON IC (timing controller IC, i.e., the master chip timing controller, the master chip timing control circuit) uses a 2 x 2 detection mode to set the anomaly pattern to be detected. The TCON IC starts the PDF function by accumulating and superposing the detected abnormal patterns, wherein the duty ratio is larger than a preset threshold value, namely, the driving mode of the liquid crystal display panel is changed, so that the abnormal image display problem is corrected. In this way, although an abnormal pattern to be detected can be detected, there is a risk of false detection and false activation of the PDF function.
Disclosure of Invention
The application provides a method for controlling a display panel to display pictures, a time sequence control circuit and a display device, and mainly solves the problem that the existing display panel is at risk of false detection when detecting abnormal patterns.
In order to solve the technical problems, a first technical scheme adopted by the application is to provide a method for displaying a picture by a display panel, wherein the display panel comprises a display area, and the display area is used for displaying the picture; comprising the following steps:
driving the display panel to display a first picture by adopting a first driving mode;
dividing the display area into a plurality of sub-display areas;
detecting an abnormal graphic unit contained in a second picture to be displayed corresponding to each sub-display area;
judging whether the areas of a plurality of continuous abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area reach a first preset threshold value or not;
and in response to the duty ratios of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode.
And in response to the duty ratios of the sub-display areas reaching the first preset threshold in all the sub-display areas not reaching a second preset threshold, driving the display panel to display a second picture in a first driving mode.
The areas of the plurality of sub-display areas are the same, and the first preset thresholds corresponding to the plurality of sub-display areas are the same.
The number of the plurality of sub-display areas is 2, 3 or 4, and the second preset threshold value is 100%.
Wherein the step of dividing the display area into a plurality of sub-display areas comprises:
dividing the display area into a left sub-display area and a right sub-display area; or (b)
Dividing the display area into an upper sub-display area and a lower sub-display area; or (b)
Dividing the display area into an inner sub-display area and an outer sub-display area; or (b)
The display area is divided into two sub-display areas along a diagonal line of the display area.
Dividing the display area into a plurality of sub-display areas by adopting at least two different dividing modes;
detecting abnormal graphic units contained in a second picture to be displayed corresponding to each sub-display area obtained in each division mode;
judging whether the areas of a plurality of continuous abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area obtained in each dividing mode reach a first preset threshold value or not;
and in response to the duty ratios of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode.
Wherein, before the step of dividing the display area into a plurality of sub-display areas, the method further comprises;
detecting an abnormal graphic unit contained in the second picture to be displayed in the display area;
responding to the accumulated areas of a plurality of abnormal graphic units contained in the second picture to reach a third preset threshold value, and executing the step of dividing the display area into a plurality of sub-display areas and corresponding subsequent steps;
and driving the display panel to display the second picture by adopting a first driving mode in response to the accumulated areas of the abnormal graphic units contained in the second picture not reaching a third preset threshold.
The abnormal graphic unit comprises four pixel units positioned in two adjacent rows of pixel units and two adjacent columns of pixel units; wherein each pixel unit comprises three RGB sub-pixel units; and the two pixel units in the same row and the two pixel units in the same column are both bright and dark; the first driving mode is a column overturning driving mode, and the second driving mode is a two-point overturning driving mode.
In order to solve the above technical problem, a second technical solution adopted in the present application is to provide a timing control circuit, where the timing control circuit is configured to control the display panel to display a picture by using any one of the above related methods.
In order to solve the above technical problem, a third technical solution adopted in the present application is to provide a display device, including:
a display panel including a display area;
and a central control board electrically connected with the display panel and including the timing control circuit.
The application provides a method for controlling a display panel to display pictures, a time sequence control circuit and a display device. The display panel comprises a display area, and the display area is used for displaying pictures; the method for controlling the display panel to display the picture comprises the steps of driving the display panel to display a first picture in a first driving mode; dividing the display area into a plurality of sub-display areas; detecting an abnormal graphic unit contained in a second picture to be displayed corresponding to each sub-display area; judging whether the areas of a plurality of continuous abnormal graphic units contained in a second picture to be displayed corresponding to each sub-display area reach a first preset threshold value or not; and in response to the duty ratio of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode. The method comprises the steps of judging whether the areas of a plurality of continuous abnormal graphic units contained in a second picture to be displayed corresponding to each sub-display area reach a first preset threshold, responding to the fact that the duty ratio of the sub-display area reaching the first preset threshold in all the sub-display areas reaches a second preset threshold, and starting a display panel to display the second picture in a second driving mode if the duty ratio reaches the second preset threshold.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a Pixel on/off Pixel structure provided herein;
FIG. 2 is a schematic diagram of a 2Pixel on/off Pixel structure provided herein;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 4 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a first embodiment of the present disclosure;
FIG. 5 is a schematic diagram of a display area divided into left and right sub-display areas;
FIG. 6 is a schematic diagram of a display area divided into upper and lower sub-display areas;
FIG. 7 is a schematic diagram of a display area divided into inner and outer sub-display areas;
fig. 8 is a schematic diagram of a pixel structure minimum unit of an abnormal graphic unit set in the present embodiment;
fig. 9 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a second embodiment of the present disclosure;
fig. 10 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a third embodiment of the present disclosure;
fig. 11 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a fourth embodiment of the present disclosure;
FIG. 12 is a schematic diagram of a timing control circuit according to an embodiment of the present disclosure;
fig. 13 is a schematic diagram of a display device according to an embodiment of the present application.
Reference numerals illustrate:
1-a display area; 101-a sub-display area; 2-a timing control circuit; 201-a picture information acquisition module; 202-a picture information processing module; 203-a drive module; 10-a display panel; 20-a central control board; a 20 a-gamma correction circuit; 20 b-a power management circuit; 30-a control circuit board; 301-a memory chip; 100-a display device; a-abnormal graphic element.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present application.
The terms "first," "second," "third," and the like in this application 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, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The inventor of the application researches and discovers that the risks of false detection and false starting of the PDF function caused by adopting a mode of accumulatively detecting the abnormal pattern can be reduced to a certain extent by adopting a mode of continuously detecting the abnormal pattern. Referring to fig. 1 and 2, fig. 1 is a schematic view of a Pixel on/off Pixel structure provided in the present application; fig. 2 is a schematic diagram of a 2Pixel on/off Pixel structure provided in the present application. For example, using the 2×2 detection mode, the anomaly pattern is the anomaly pattern unit a shown in fig. 8. The PDF function should be activated only when the pattern of the abnormal display area is Pixel on/off abnormal as shown in fig. 1. However, when the pattern of the abnormal display area is the 2Pixel on/off abnormal condition shown in fig. 2, since fig. 2 also includes the abnormal graphic unit a shown in fig. 8, the PDF function is caused and erroneously started. Since the abnormal graphic unit a in fig. 2 is discontinuous, the risk of false activation of the PDF function can be reduced by continuously detecting the abnormal graphic unit a.
However, how to set the threshold value becomes a difficulty in a manner of continuously detecting the abnormal graphic unit a. For example, in the mode of accumulatively detecting the abnormal graphic unit A, when the ratio of the area of the abnormal graphic unit A to the area of the display area is greater than 50% of the threshold value, a PDF function is started; after changing to a mode of continuously detecting the abnormal graphic unit A, if the ratio of the area of the continuous abnormal graphic unit A to the area of the display area is required to be more than 50% of the threshold value, the threshold value is too high, so that the risk of starting the PDF function is caused; if the threshold value is only reduced by 50%, this will in turn lead to a risk of false activation of the PDF function.
Therefore, the method adopts the mode of detecting and judging the abnormal graphic unit A in each region continuously, optimizes the setting mode of the threshold value, and can reduce the risk of mistakenly starting the PDF function and reduce the risk of missing starting the PDF function.
The present application is described in detail below with reference to the accompanying drawings and examples.
Referring to fig. 3 and fig. 4, fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the disclosure; fig. 4 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a first embodiment of the present disclosure.
Referring to fig. 3, the display panel 10 provided in the present embodiment includes a display area 1, the display area 1 is used for displaying images, and the display panel 10 can be applied to display products such as mobile phones, computers, televisions and other display devices. The display type of the display panel 10 may be a liquid crystal display panel.
Referring to fig. 4, the method for controlling the display screen of the display panel 10 according to the present embodiment specifically includes:
step S01: the display panel is driven to display a first picture by adopting a first driving mode.
The display panel 10 of the present embodiment includes the display area 1, and the display panel 10 is driven to display a first screen by a first driving method. The first driving mode is a Column Inversion driving mode (Column Inversion). In the column inversion driving method, each pixel unit in the pixel row and the pixel column has opposite voltage polarities.
Step S02: the display area is divided into a plurality of sub-display areas.
The number of the divided sub-display areas 101 in the embodiment of the present application may be 2, 3 or 4. The number of the plurality of sub-display areas 101 is not specified, and the dividing method is not limited. It should be noted that the area of each sub-display area 101 may be the same or different, which is not limited in the embodiment of the present application. In this embodiment, the following detailed description will be mainly made by taking the division into two sub-display areas 101 as an example.
With further reference to fig. 5 to 7, fig. 5 is a schematic diagram of dividing a display area into left and right sub-display areas; FIG. 6 is a schematic diagram of a display area divided into upper and lower sub-display areas; fig. 7 is a schematic diagram of dividing a display area into inner and outer sub-display areas. Referring to fig. 5, the display area 1 is divided into two sub-display areas 101, and the areas of the sub-display areas 101 may be identical or different when the display area 1 is divided into two sub-display areas 101, and in this embodiment, the areas of the two sub-display areas 101 are preferably identical. Referring to fig. 6, the display area 1 is divided into two upper and lower sub-display areas 101, that is, the upper and lower sub-display areas 101 are divided with respect to the top and bottom of the display panel 10, and the areas of the sub-display areas 101 may be identical or different when divided into the two sub-display areas 101, and preferably, the areas of the upper and lower sub-display areas 101 are identical. Referring to fig. 7, the display area 1 is divided into an inner sub-display area 101 and an outer sub-display area 101, and the areas of the sub-display areas 101 may be identical or different when the display area 1 is divided into the two sub-display areas 101, and in this embodiment, the areas of the inner sub-display area 101 and the outer sub-display area 101 are preferably different, as shown in fig. 7, the shapes of the inner sub-display area 101 and the outer sub-display area 101 are rectangular. Preferably, the distances between the top and bottom sides and the inner sub-display area 101 are the same and equal to half the width of the inner sub-display area 101, so that the difference between the area of the inner sub-display area 101 and the area of the outer sub-display area 101 is smaller, and the detection process is more reasonable.
In addition to the above-mentioned modes, the dividing modes of the embodiment may also be to divide the display area 1 into two sub-display areas 101 along the diagonal line of the display area 1 or divide the display area into other sub-display areas 101, and the areas of the sub-display areas 101 may be identical or different when the dividing is specifically performed, and may be adjusted according to the actual dividing mode, which is not limited in this application. The present embodiment will be described in detail mainly by taking the example of dividing the display area 1 into left and right sub-display areas 101 and the areas of the two sub-display areas 101 are the same.
Step S03: and detecting abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area.
Specifically, the abnormal graphic unit a included in the second frame to be displayed corresponding to each sub-display area 101 is detected.
Referring to fig. 8, fig. 8 is a schematic diagram of a pixel structure minimum unit of an abnormal graphic unit set in the present embodiment. The abnormal graphic unit a set in this embodiment includes four pixel units located in two adjacent rows of pixel units and two adjacent columns of pixel units, that is, four pixel units that are adjacent to each other in the upper, lower, left and right directions, where each pixel unit includes three sub-pixel units of RGB; and two pixel units in the same row and two pixel units in the same column are both bright and dark, namely, three RGB sub-pixel units of one pixel unit are all on, and three RGB sub-pixel units of the other pixel unit are all off. Since the present embodiment mainly uses the example of dividing the display area 1 into the left and right sub-display areas 101 and the areas of the two sub-display areas 101 are the same, the present embodiment will be further described. It is therefore necessary to detect the abnormal graphic unit a contained in the corresponding second picture to be displayed in the divided left and right sub-display areas 101.
Step S04: and judging whether the areas of a plurality of continuous abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area reach a first preset threshold value.
According to the result of the detection in step S03, it is determined whether the areas of the continuous plurality of abnormal graphic units a included in the second frame to be displayed corresponding to each sub-display area 101 reach the first preset threshold. It is understood that, the first preset threshold may be the area of the continuous multiple abnormal graphic units a, or the area ratio of the continuous multiple abnormal graphic units a to the entire sub-display area 101. If the area of each sub-display area 101 is the same when the sub-display areas 101 are divided, the first preset threshold value corresponding to each sub-display area 101 is also the same. If the area of each sub-display area 101 is not the same when the sub-display areas 101 are divided, the first preset threshold value corresponding to each sub-display area 101 is not the same. Here, the display area 1 is mainly divided into two left and right sub-display areas 101, and the areas of the two sub-display areas 101 are the same. In a specific embodiment, for example, the display area 1 is divided into left and right sub-display areas 101, and it is determined whether the area of the left sub-display area 101 reaches 40% of the area of the entire left sub-display area 101 after detection, and whether the area of the right sub-display area 101 reaches 40% of the area of the entire right sub-display area 101. If both sub-display areas 101 meet the set first preset threshold, step S05 is performed, otherwise the process ends.
Step S05: and in response to the duty ratio of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode.
And comparing different dividing modes and dividing areas, wherein the sizes of the second preset thresholds are not identical. For example, for dividing the display area 1 into two sub-display areas 101 with the same area, the value of the second preset threshold is 100%, that is, the areas of the continuous multiple abnormal graphic units a included in the second picture to be displayed corresponding to the two sub-display areas 101 reach the first preset threshold, and the display panel 10 is driven to display the second picture by adopting the second driving mode. It will be appreciated that for dividing the display area 1 into four or more sub-display areas 101 of equal area, the second predetermined threshold value is not required to be necessarily equal to 100%, and may be 75% or 80%, for example. The second driving mode is a driving mode different from the first driving mode, and can correct display abnormality to a certain extent, the second driving mode is a two-Dot Inversion driving mode (2 Dot Inversion), and the two-Dot Inversion driving mode adopts a group of two adjacent dots (i.e. 2Dot Inversion), that is, two pixel units have the same polarity and opposite polarity to other adjacent pixel units.
The present application adopts a mode of dividing into a plurality of sub-display areas 101 for detection and judgment, and is used for detecting an abnormal graphic unit a included in a second picture to be displayed corresponding to each sub-display area 101, then judging whether the area of a plurality of continuous abnormal graphic units a included in the second picture to be displayed corresponding to each sub-display area 101 reaches a first preset threshold value, and finally, the duty ratio of the sub-display area 101 reaching the first preset threshold value in all the sub-display areas 101 reaches a second preset threshold value, and driving the display panel 10 to display the second picture in a second driving mode, otherwise, driving the display panel 10 to display the second picture in a first driving mode. The method can reduce the risk of starting the PDF function by mistake and reduce the risk of not starting the PDF function by mistake, and avoid the influence of the missed starting and the false detection on the display function.
Further, referring to fig. 9, fig. 9 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a second embodiment of the present disclosure. The steps of the method for controlling the display panel 10 to display a picture provided in the present embodiment are almost identical to those in the first embodiment, and the difference is that the method for controlling the display panel 10 to display a picture provided in the present embodiment further includes:
step S06: and driving the display panel to display a second picture in a first driving mode in response to the duty ratio of the sub-display area reaching the first preset threshold in all the sub-display areas not reaching the second preset threshold.
When the duty ratio of the sub-display area 101 reaching the first preset threshold in all the sub-display areas 101 does not reach the second preset threshold, the display panel 10 is still driven to display the second picture in the first driving mode.
Further, referring to fig. 10, fig. 10 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a third embodiment of the present disclosure. The steps of the method for controlling the display panel 10 to display a picture provided in the present embodiment are almost identical to those in the second embodiment, and the difference is that the method for controlling the display panel 10 to display a picture provided in the present embodiment further includes, before step S02:
step S07: detecting an abnormal graphic unit contained in a second picture to be displayed in the display area.
Specifically, the abnormal graphic unit a included in the second frame to be displayed corresponding to the entire display area 1 is detected. The specific structure of the abnormal graphic unit a is shown in fig. 8.
Step S08: in response to the cumulative area of the plurality of abnormal graphic units included in the second screen reaching the third preset threshold, step S02 of dividing the display area into a plurality of sub-display areas and corresponding subsequent steps, such as step S03, step S04, and step S05, are performed.
Unlike the detection of the continuous plurality of abnormal graphic units a in the step S04, the step is mainly in response to the accumulated area of the plurality of abnormal graphic units a included in the second frame reaching the third preset threshold. That is, the areas of the plurality of abnormal graphic units a included in the second screen are accumulated, and when the third preset threshold is reached, the step of dividing the display area 1 into a plurality of sub-display areas 101 and the corresponding subsequent steps are performed. It is understood that, the third preset threshold may be the cumulative area of the plurality of abnormal graphic units a, or the ratio of the cumulative area of the plurality of abnormal graphic units a to the area of the entire sub-display area 101 may be substantially the same. In a specific embodiment, for example, when the area of the plurality of abnormal graphic units a included in the second frame is accumulated to be 50% of the area of the entire display area 1, the step of dividing the display area 1 into a plurality of sub-display areas 101 and corresponding subsequent steps are performed. Setting this step makes it possible to make a preliminary judgment before the division of the area is made, and if the condition in step S08 is not satisfied, step S09 is directly performed without performing the step of dividing the display area 1 into the plurality of sub-display areas 101 and the corresponding subsequent steps, thus saving the processing time and the calculation cost.
Step S09: and driving the display panel to display the second picture by adopting the first driving mode in response to the accumulated areas of the abnormal graphic units contained in the second picture not reaching a third preset threshold.
Referring to fig. 11, fig. 11 is a flowchart illustrating steps of a method for controlling a display screen of a display panel according to a fourth embodiment of the present disclosure. The steps of the method for controlling the display panel 10 to display a picture provided in this embodiment are almost identical to those in any of the above embodiments, and the difference is that at least two different dividing modes are adopted to divide the display area 1 into a plurality of sub-display areas 101 in this embodiment. In this embodiment, the steps substantially similar to those of the first embodiment will be described in detail.
The method for controlling the display screen of the display panel provided in the fourth embodiment of the present application specifically comprises the following steps:
step S01: the display panel is driven to display a first picture by adopting a first driving mode.
Step S02A: the display area is divided into a plurality of sub-display areas by at least two different dividing modes.
Step S03A: and detecting abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area obtained in each division mode.
Step S04A: and judging whether the areas of a plurality of continuous abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area obtained in each dividing mode reach a first preset threshold value.
Step S05A: and in response to the duty ratio of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode.
Step S06A: and driving the display panel to display a second picture in a first driving mode in response to the duty ratio of the sub-display area reaching the first preset threshold in all the sub-display areas not reaching the second preset threshold.
The at least two different dividing manners mentioned in the present embodiment may be at least two of various manners of dividing the display area 1 into two left and right sub-display areas 101, dividing the display area 1 into two upper and lower sub-display areas 101, dividing the display area 1 into two inner and outer sub-display areas 101, and dividing the display area 1 into two sub-display areas 101 along the diagonal line of the display area 1. The present embodiment mainly describes an example in which the display area 1 is first divided into two left and right sub-display areas 101, and then the display area 1 is divided into two inner and outer sub-display areas 101.
In a specific dividing process, the display area 1 may be divided into two left and right sub-display areas 101, detecting an abnormal graphic unit a included in a second picture to be displayed corresponding to each sub-display area 101, then determining whether the areas of a plurality of continuous abnormal graphic units a included in the second picture to be displayed corresponding to each sub-display area 101 reach a first preset threshold, if so, then determining that the duty ratio of the sub-display area 101 reaching the first preset threshold in all the sub-display areas 101 does not reach a second preset threshold. Next, the display area 1 may be divided into an inner sub-display area 101 and an outer sub-display area 101, detecting the abnormal graphic unit a included in the second picture to be displayed corresponding to each sub-display area 101, then determining whether the areas of the continuous multiple abnormal graphic units a included in the second picture to be displayed corresponding to each sub-display area 101 reach the first preset threshold, if so, then determining that the duty ratio of the sub-display area 101 reaching the first preset threshold in all the sub-display areas 101 does not reach the second preset threshold. If both of the two dividing modes satisfy the first preset threshold and the second preset threshold, the display panel 10 may be driven to display the second picture in the second driving mode. The method can more accurately judge whether the display panel 10 needs to be driven by adopting the second driving mode, and better reduce the risk of false start and missing start in the detection process, thereby avoiding influencing the display function.
Referring to fig. 12, fig. 12 is a schematic diagram of a timing control circuit according to an embodiment of the present application. The present embodiment provides a timing control circuit 2 provided on a display panel 10, the timing control circuit 2 being configured to be able to control the display panel 10 to display a picture by adopting the method of controlling the display panel 10 to display a picture provided in the above embodiment.
Specifically, the timing control circuit 2 includes a screen information acquisition module 201, a screen information processing module 202, and a driving module 203, wherein the screen information acquisition module 201 is configured to acquire a display screen, the screen information processing module 202 is configured to determine whether various conditions in the above-described method are satisfied, and the driving module 203 is configured to drive the display panel 10 to execute a PDF function when the various conditions in the above-described method are satisfied.
Referring to fig. 13, fig. 13 is a schematic diagram of a display device according to an embodiment of the present application. The present embodiment provides a display device 100. The display device 100 includes a display panel 10 and a center control board 20, the display panel 10 including a display area 1, the display area 1 for displaying a picture; the central control board 20 includes a timing control circuit 2, and the central control board 20 is electrically connected with the display panel 10 to control a driving manner of the display panel 10. It will be appreciated that the display device 100 also includes a control circuit board 30. The center control board 20 further includes a gamma correction circuit 20a (gamma IC) and a power management circuit 20b (PM IC). The gamma correction circuit 20a is electrically connected to the memory chip 301, and is used for debugging and correcting the display panel 10 according to the gamma data stored in the memory chip 301; the power management circuit 20b is electrically connected to a source driving unit (not shown) for controlling a voltage value applied to the array substrate.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.
Claims (10)
1. A method of controlling a display panel to display a picture, the display panel comprising a display area for displaying the picture; characterized by comprising the following steps:
driving the display panel to display a first picture by adopting a first driving mode;
dividing the display area into a plurality of sub-display areas;
detecting an abnormal graphic unit contained in a second picture to be displayed corresponding to each sub-display area;
judging whether the areas of a plurality of continuous abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area reach a first preset threshold value or not;
responding to the fact that the duty ratio of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaches a second preset threshold value, and driving the display panel to display a second picture in a second driving mode;
wherein the second preset threshold is 75%, 80% or 100%.
2. The method of claim 1, wherein the display panel is driven to display a second picture in a first driving manner in response to the duty ratios of the sub-display areas reaching the first preset threshold in all the sub-display areas not reaching a second preset threshold.
3. The method of claim 1, wherein the areas of the plurality of sub-display areas are the same, and the first preset thresholds corresponding to the plurality of sub-display areas are the same.
4. The method of claim 1, wherein the number of the sub-display areas is 2, 3 or 4, and the second preset threshold is 100%.
5. The method of controlling a display of a display panel according to claim 1, wherein the step of dividing the display area into a plurality of sub-display areas comprises:
dividing the display area into a left sub-display area and a right sub-display area; or (b)
Dividing the display area into an upper sub-display area and a lower sub-display area; or (b)
Dividing the display area into an inner sub-display area and an outer sub-display area; or (b)
The display area is divided into two sub-display areas along a diagonal line of the display area.
6. The method of claim 1, wherein the step of displaying the picture on the display panel,
dividing the display area into a plurality of sub-display areas by adopting at least two different dividing modes;
detecting abnormal graphic units contained in a second picture to be displayed corresponding to each sub-display area obtained in each division mode;
judging whether the areas of a plurality of continuous abnormal graphic units contained in the second picture to be displayed corresponding to each sub-display area obtained in each dividing mode reach a first preset threshold value or not;
and in response to the duty ratios of the sub-display areas reaching the first preset threshold value in all the sub-display areas reaching a second preset threshold value, driving the display panel to display a second picture in a second driving mode.
7. The method of controlling a display of a display panel according to claim 1, wherein the step of dividing the display area into a plurality of sub-display areas is preceded by the step of;
detecting an abnormal graphic unit contained in the second picture to be displayed in the display area;
responding to the accumulated areas of a plurality of abnormal graphic units contained in the second picture to reach a third preset threshold value, and executing the step of dividing the display area into a plurality of sub-display areas and corresponding subsequent steps;
and driving the display panel to display the second picture by adopting a first driving mode in response to the accumulated areas of the abnormal graphic units contained in the second picture not reaching a third preset threshold.
8. The method of claim 1, wherein the abnormal graphic element comprises four pixel elements positioned in two adjacent rows of pixel elements and two adjacent columns of pixel elements; wherein each pixel unit comprises three RGB sub-pixel units; and the two pixel units in the same row and the two pixel units in the same column are both bright and dark; the first driving mode is a column overturning driving mode, and the second driving mode is a two-point overturning driving mode.
9. A timing control circuit configured to control the display of a display panel by the method of any one of claims 1-8.
10. A display device, comprising:
a display panel including a display area;
a central control board electrically connected to the display panel and comprising the timing control circuit of claim 9.
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