Driving circuit of display panel and driving method thereof

Abstract

The invention relates to the technical field of display, in particular to a driving circuit of a display panel and a driving method thereof, and the driving method comprises the steps: determining a video analysis state of a target display video according to a key paragraph proportion and a reference change coefficient of a key paragraph, and determining a video analysis strategy of the target display video according to the video analysis state; if in the first video analysis state, key regulation and control areas are determined according to the dynamic parameters, and the driving current of the driving circuit corresponding to each key regulation and control area is regulated according to the reference screen display difference value and the dynamic duration; if the display panel is in the second video analysis state, key regulation and control areas are determined according to the display parameters, and whether driving voltage value adjustment is carried out on the corresponding regulation and control area set or not is determined according to the number of the key regulation and control areas contained in each regulation and control area set. And the energy consumption of the driving circuit is reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a driving circuit of a display panel and a driving method thereof. Background Art

[0002] The driving circuit for the display panel plays a key role in the video presentation effect, and with the development of video shooting technology, the presentation difficulty of the display panel has also increased. In order to ensure that some colors or pictures with complex brightness and darkness changes are present, the driving circuit needs to be at a higher performance level. However, the existing driving circuits and driving methods for display panels, in order to meet the requirements of video presentation effects, often keep the driving circuit at a high energy consumption, resulting in resource loss. Therefore, how to dynamically adjust the control parameters of the driving circuit according to the actual situation of the video to be presented is a problem that needs to be urgently solved by technical personnel in this field.

[0003] Chinese patent publication number CN109671398A discloses a driving method of a pixel driving circuit, a display panel and a display device, wherein the driving method of the pixel driving circuit includes: a driving transistor and a light-emitting element; the driving method includes: a data writing stage, a light-emitting stage, and a compensation stage, wherein the light-emitting stage and the compensation stage overlap, and the starting time of the compensation stage is after the start of the light-emitting stage. The display panel includes a display area and a non-display area; the display area includes a plurality of pixel units arranged in an array, a plurality of light-emitting signal lines, and a plurality of scanning signal lines, and the pixel unit includes a pixel driving circuit, and the pixel driving circuit is driven by the above-mentioned driving method. The display device includes the above-mentioned display panel. However, the above-mentioned technical solution has the following problems: it fails to make targeted adjustments to the control parameters of the driving circuit of the display panel controlling different areas according to the actual situation of the video to be presented, and fails to reduce the energy loss of the driving circuit while ensuring the video presentation effect of the display panel. Summary of the invention

[0004] To this end, the present invention provides a driving circuit and a driving method for a display panel, so as to overcome the problem of energy loss of the driving circuit caused by the failure to make targeted adjustments to the control parameters of the driving circuit for controlling the display panel in different areas according to the actual situation of the video to be presented in the prior art.

[0005] To solve the above problem, the present invention provides a driving method of a driving circuit of a display panel, comprising: Determine a video analysis state of a target display video according to a key paragraph ratio and a reference variation coefficient of the key paragraph, and determine a video analysis strategy for the target display video according to the video analysis state; If in the first video analysis state, the dynamic parameters of the corresponding key display area are determined according to the screen display parameter overlap and the video playback parameters, and the key control area is determined according to the dynamic parameters, and the driving current of the driving circuit corresponding to each key control area is adjusted according to the reference screen display difference value and the dynamic duration; If in the second video analysis state, the key control area is determined according to the display parameters, and the key control area is divided to obtain a control area set, and whether to adjust the driving voltage value for the corresponding control area set is determined according to the number of key control areas contained in each control area set.

[0006] Further, the video analysis state of the target display video is determined according to the key paragraph ratio and the reference variation coefficient of the key paragraph. If the key paragraph ratio of the target display video is greater than the preset key paragraph ratio or the reference variation coefficient is greater than the preset reference variation coefficient, it is determined that the target display video is in the first video analysis state; If the key paragraph ratio of the target display video is less than or equal to the preset key paragraph ratio or the reference variation coefficient is less than or equal to the preset reference variation coefficient, it is determined that the target display video is in the second video analysis state.

[0007] Furthermore, a number of target video frames are extracted at the same time interval of the target display video, and a screen display reference value of each target video frame and a proportion of overlapping pixels between the target video frames are detected; The screen richness of any key segment is positively correlated with the screen reference value of the target video frame it contains; The video frame change coefficient of any key segment is negatively correlated with the percentage of overlapping pixels of the target video frame it contains; The screen display richness of any key section of the target display video is greater than the preset screen display richness and the video frame change coefficient is greater than the preset change coefficient.

[0008] Further, determining a video analysis strategy for the target display video according to the video analysis state; If the target display video is in the first video analysis state, determining the key control area of ​​the target display panel according to the dynamic parameters; If the target display video is in the second video analysis state, the key control area of ​​the target display panel is determined according to the display parameters.

[0009] Furthermore, when determining the key control area of ​​the target display panel according to the dynamic parameters, the target display panel is divided into a number of display areas of the same area, and the target display video is periodically monitored, and the display area containing the edge of the display subject in the regional screen is recorded as the key display area; Determine the dynamic parameters of the corresponding key display area according to the overlap of the screen display parameters of each key display area and the video playback parameters; The dynamic parameters and the screen display parameters have a negative correlation in their coincidence degree; The dynamic parameter is positively correlated with the video playback parameter.

[0010] Further, the key control area of ​​the target display panel is determined according to the dynamic parameter, and the key display area whose dynamic parameter is greater than the preset dynamic parameter is recorded as the key control area; For a single key control area, the column drive current value of the drive circuit corresponding to the key control area is increased and adjusted according to the reference screen display difference value and the dynamic duration; The increase value of the column driving current value is positively correlated with the reference screen display difference value and the dynamic duration.

[0011] Further, determining whether to perform secondary setting for the column driving current value according to the distribution state of the key control area and the driving parameter difference value; If the driving parameter difference value of each key control area in a dense area is greater than the preset driving parameter difference value, a secondary setting is performed on the column driving current value of each key control area in the dense area, and the reference driving current value is set to the column driving current value of each key control area in the dense area.

[0012] Furthermore, when determining the key control area of ​​the target display panel according to the display parameters, the target display panel is divided into a number of display areas of the same area, and the display parameters of each display area are periodically detected, and the display area whose display parameters of the regional screen are less than the preset display parameters is recorded as the key control area; The set of control areas is determined according to the distribution status and display parameters of each key control area.

[0013] Further, determining whether to adjust the driving voltage value for the corresponding control area set according to the number of key control areas included in each control area set; If the number of key control areas included in a control area set is greater than the preset number of areas, the driving voltage values ​​of the included display areas are reduced and adjusted according to the reference display parameters of the control area set; The reduction value of the driving voltage value is positively correlated with the reference display parameter; The reference display parameter is an average value of the display parameters of the display areas included in the control area set.

[0014] The present invention also provides a driving circuit for a display panel, comprising: A drive control module, used to control the column drive current value and drive voltage value of the drive circuit in real time; A voltage regulating submodule, which is connected to the drive control module and is used to output a working voltage to the drive circuit and adjust the drive voltage value according to actual needs; A current regulating submodule, which is connected to the drive control module and is used to adjust the column drive current value of the drive circuit; The driving module is connected to the voltage regulating submodule and the current regulating submodule respectively, and is used to convert the control signal into an electrical signal capable of driving the display panel, so as to control the display pixels of the target display panel.

[0015] Compared with the prior art, the beneficial effect of the present invention lies in that, in the technical solution of the present invention, the video analysis state of the target display video is determined according to the proportion of key paragraphs and the reference change coefficient of the key paragraphs, and the video analysis strategy of the target display video is determined according to the video analysis state, so that the method of determining the key control area is more in line with the actual video situation, and the subsequent adjustment of the control parameters of the driving circuit is more accurate. The present invention reduces the energy consumption of the driving circuit while ensuring the video presentation effect of the display panel.

[0016] Furthermore, the present invention determines the key sections according to the screen display reference values ​​of each target video frame and the proportion of overlapping pixels between the target video frames, and determines the video analysis state of the target display video according to the proportion of the key sections and the reference change coefficient of the key sections, so as to determine the color or brightness changes of the picture in the target display video, thereby ensuring that the subsequent key control method is more in line with the actual video situation and avoiding additional analysis processes.

[0017] Furthermore, in the present invention, when the target display video is in the first video analysis state, the color or brightness changes in the target display video are relatively frequent. Since the edge of the display subject is prone to cause changes in color or brightness, dynamic parameter detection is performed on the display area including the edge of the display subject. The dynamic parameters are determined according to the overlap of the screen display parameters and the video playback parameters. This can effectively characterize the changes in the display area and the display requirements, and determine the display area that needs to adjust the driving current according to the dynamic parameters, thereby ensuring the video presentation effect of the display panel while avoiding energy loss of the driving circuit in the remaining area.

[0018] Furthermore, the present invention determines whether to perform secondary settings for the driving current based on the distribution status of the key control areas and the driving parameter difference values, and adjusts the driving current of the key control areas contained in the dense areas with large driving parameter difference values ​​to avoid large differences in driving parameters in similar areas, which leads to obvious differences in video presentation effects and affects the overall presentation effect of the display panel.

[0019] Furthermore, in the present invention, when the target display video is in the second video analysis state, the color or brightness changes in the target display area are less. Therefore, considering the presentation requirements of the pictures in different areas, the driving parameters are adjusted, and the key control areas are determined according to the display parameters, that is, the color richness of the corresponding regional pictures and the display areas with lower brightness are recorded as key control areas. Such areas are divided to ensure that the picture presentation requirements in the acquired control area set are close and the distances are close. Whether to adjust the driving voltage value is determined according to the number of key control areas it contains, so that when the color or brightness requirements in a certain area are low, the energy consumption of the driving circuit can be appropriately reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a driving method of a driving circuit of a display panel of the present invention; Figure 2 It is a flow chart of the present invention for determining the video analysis state of a target display video according to the key paragraph ratio and the reference variation coefficient of the key paragraph; Figure 3 A flow chart of a video analysis strategy for determining a target display video according to a video analysis state in the present invention; Figure 4 It is a circuit connection diagram of the driving circuit of the display panel of the present invention. DETAILED DESCRIPTION

[0021] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The 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 used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0023] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0024] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figures 1 to 3 As shown, the present invention provides a driving method of a driving circuit of a display panel, comprising: Determine a video analysis state of a target display video according to a key paragraph ratio and a reference variation coefficient of the key paragraph, and determine a video analysis strategy for the target display video according to the video analysis state; If in the first video analysis state, the dynamic parameters of the corresponding key display area are determined according to the screen display parameter overlap and the video playback parameters, and the key control area is determined according to the dynamic parameters, and the driving current of the driving circuit corresponding to each key control area is adjusted according to the reference screen display difference value and the dynamic duration; If in the second video analysis state, the key control area is determined according to the display parameters, and the key control area is divided to obtain a control area set, and whether to adjust the driving voltage value for the corresponding control area set is determined according to the number of key control areas contained in each control area set.

[0026] Among them, the target display panel in the present invention is a display panel that needs to adjust the control parameters of the driving circuit, the target display video is the video that the target display panel currently needs to present, the target display panel corresponds to a number of display pixels for realizing video content presentation, each display pixel is a light-emitting element, and the target display panel in the present invention has a number of driving circuits for regional control, and the area served by each driving circuit is recorded as a display area, and the area of ​​each display area is the same. For any moment, the partial video picture of the video frame that needs to be presented by each display area at that moment is recorded as the regional picture corresponding to each display area; Several historical analysis records are applied in the present invention, and any one of the historical analysis records records at least one key segment proportion, reference change coefficient, screen display richness, video frame change coefficient, dynamic parameters, number of key control areas, drive parameter difference values, display parameters and display parameter difference values ​​in the parameter control process of the drive circuit of the target display panel based on the target display video, and each historical monitoring record corresponds to a qualified mark, which records whether the video presentation effect and energy saving effect of the target display panel meet user needs.

[0027] Specifically, the video analysis status of the target display video is determined according to the key paragraph ratio and the reference change coefficient of the key paragraph. If the key paragraph ratio of the target display video is greater than the preset key paragraph ratio or the reference variation coefficient is greater than the preset reference variation coefficient, it is determined that the target display video is in the first video analysis state; If the key paragraph ratio of the target display video is less than or equal to the preset key paragraph ratio or the reference variation coefficient is less than or equal to the preset reference variation coefficient, it is determined that the target display video is in the second video analysis state.

[0028] Among them, the key paragraph ratio = the sum of the duration of each key paragraph in the target display video / the duration of the target display video, the reference variation coefficient is the average value of the paragraph variation coefficients of each key paragraph in the target display video, and for a single key paragraph, the paragraph variation coefficient is the sum of the screen display richness of the key paragraph and the video frame variation coefficient. The value of the preset key paragraph ratio and the preset reference variation coefficient can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis records. The higher the user's requirements for the video presentation effect and energy saving effect of the target display panel, the larger the value of the preset key paragraph ratio, the larger the value of the preset reference variation coefficient, and the higher the requirement. A method for determining a preset key paragraph ratio is provided, wherein a historical analysis record of a target display video in a first video analysis state is recorded as a first reference record, and a minimum value of the key paragraph ratio of each target display video in the first reference record that satisfies a user's requirements for a video presentation effect and an energy saving effect of a target display panel is recorded as a preset key paragraph ratio; a value for the preset key paragraph ratio is provided, and the value of the preset key paragraph ratio is 0.3; a value for a preset reference variation coefficient is provided, and the minimum value of the reference variation coefficient of each target display video in the first reference record that satisfies a user's requirements for a video presentation effect and an energy saving effect of a target display panel is recorded as a preset reference variation coefficient.

[0029] Specifically, a number of target video frames are extracted for the target display video with the same duration, and the screen display reference value of each target video frame and the proportion of overlapping pixels between the target video frames are detected; The screen richness of any key segment is positively correlated with the screen reference value of the target video frame it contains; The video frame change coefficient of any key segment is negatively correlated with the percentage of overlapping pixels of the target video frame it contains; The screen display richness of any key section of the target display video is greater than the preset screen display richness and the video frame change coefficient is greater than the preset change coefficient.

[0030] Among them, the brightness value and RGB combination value of each display pixel point of the target display panel corresponding to each target video frame are detected, and the pixel point combination is determined according to the brightness value and RGB combination value of each display pixel point, and the display pixel points with the same brightness value and RGB combination value are recorded as the same pixel point combination. For a single target video frame, the screen display reference value is the number of pixel point combinations corresponding to the target display panel of the target video frame. For any key paragraph, the screen display richness is the average value of the screen display reference values ​​of each target video frame contained in the key paragraph. The proportion of overlapping pixels = the number of overlapping pixels in the target display panel / the number of display pixels of the target display panel. If the brightness value and RGB combination value of a display pixel point corresponding to each target video frame contained in the key paragraph are the same, then the display pixel point is recorded as the overlapping pixel point. How to detect the brightness value and RGB combination value of each display pixel point of the target display panel corresponding to each target video frame is easy for technicians in this field to understand and will not be repeated here. The values ​​of the preset screen display richness and the preset variation coefficient can be determined by the user according to the actual working scenario. For example, the user can set them according to the historical analysis records. The higher the user's requirements for the video presentation effect and the energy saving effect of the target display panel, the smaller the value of the preset screen display richness and the smaller the value of the preset variation coefficient. A method for determining the value of the preset screen display richness is provided, and the minimum value of the screen display richness of each key paragraph in the first reference record that satisfies the user's requirements for the video presentation effect and the energy saving effect of the target display panel is recorded as the preset screen display richness. A method for determining the value of the preset variation coefficient is provided, and the average value of the video frame variation coefficient of each key paragraph in the first reference record that satisfies the user's requirements for the video presentation effect and the energy saving effect of the target display panel is recorded as the preset variation coefficient.

[0031] Specifically, determining a video analysis strategy for a target display video according to the video analysis state; If the target display video is in the first video analysis state, determining the key control area of ​​the target display panel according to the dynamic parameters; If the target display video is in the second video analysis state, the key control area of ​​the target display panel is determined according to the display parameters.

[0032] Specifically, when determining the key control area of ​​the target display panel according to the dynamic parameters, the target display panel is divided into a number of display areas of the same area, and the target display video is periodically monitored, and the display area containing the edge of the display subject in the regional screen is recorded as the key display area; Determine the dynamic parameters of the corresponding key display area according to the overlap of the screen display parameters of each key display area and the video playback parameters; The dynamic parameters and the screen display parameters have a negative correlation in their coincidence degree; The dynamic parameter is positively correlated with the video playback parameter.

[0033] Among them, the display subject is a portrait, animal, plant, and object that occupies a relatively large proportion of the screen in the target display video. How to extract the display subject for the target display video and how to determine the edge of the display subject are contents that are easy to understand for those skilled in the art and will not be elaborated here. In the present invention, a cyclic video analysis cycle is applied, and the duration of the video analysis cycle can be determined by the user. The higher the user's requirements for the video presentation effect and energy saving effect of the target display panel, the shorter the duration of the video analysis cycle. A duration of a video analysis cycle is provided, and the video analysis cycle is 1 minute. When the target display video is in the first video analysis state, at the end of each video analysis cycle, the video frame corresponding to the current moment in the target display video is monitored; For a single key display area, the dynamic parameter = ln (video playback parameter / screen display parameter overlap), the video playback parameter is determined according to the frame rate of the target display video and the display resolution of the target display panel, the video playback parameter is the sum of the products of the frame rate of the target display video and the display resolution of the target display panel and their corresponding influencing parameters, the user can determine it according to the actual working scenario, and provide a value of the frame rate of the target display video and the display resolution of the target display panel and their corresponding influencing parameters, the influencing parameter corresponding to the frame rate of the target display video is 0.5, and the influencing parameter corresponding to the display resolution of the target display panel is 0.5, the screen display parameter overlap = the number of overlapping screen display pixels in the key display area / the number of display pixels in the key display area, the display pixels in the key display area with the same brightness value and RGB combination value detected at the end of the current video analysis cycle and the previous video analysis cycle are recorded as the overlapping screen display pixels of the key display area; how to determine the frame rate of the target display video and the display resolution of the target display panel is easy to understand for those skilled in the art and will not be elaborated here.

[0034] Specifically, the key control area of ​​the target display panel is determined according to the dynamic parameter, and the key display area with a dynamic parameter greater than the preset dynamic parameter is recorded as the key control area; For a single key control area, the column drive current value of the drive circuit corresponding to the key control area is increased and adjusted according to the reference screen display difference value and the dynamic duration; The increase value of the column driving current value is positively correlated with the reference screen display difference value and the dynamic duration.

[0035] The value of the preset dynamic parameter can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis record. The higher the user's requirements for the video presentation effect of the target display panel, the smaller the value of the preset dynamic parameter. A method for determining the value of the preset dynamic parameter is provided, and the minimum value of the dynamic parameter of each key control area in the first reference record that meets the user's requirements for the video presentation effect of the target display panel is recorded as the preset dynamic parameter; The key control coefficient of each key control area is determined according to the reference screen display difference value and the dynamic duration. The increase value of the column drive current value is positively correlated with the key control coefficient. For a single key control area, the key control coefficient = ln (reference screen display difference value × dynamic duration). For any display pixel point contained in the key control area, the absolute value of the difference between the brightness values ​​detected at the end time of the current video analysis cycle and the last video analysis cycle is recorded as the screen display difference value of the display pixel point. The reference screen display difference value is the average of the screen display difference values ​​of each display pixel point. The column drive current value is the current value of the column drive circuit. The column drive circuit is a circuit that provides a current or voltage signal to the column electrode of the display panel.

[0036] Specifically, whether to perform secondary setting for the column drive current value is determined according to the distribution state of the key control area and the drive parameter difference value; If the driving parameter difference value of each key control area in a dense area is greater than the preset driving parameter difference value, a secondary setting is performed on the column driving current value of each key control area in the dense area, and the reference driving current value is set to the column driving current value of each key control area in the dense area.

[0037] Wherein, for any key control area, the distribution state is determined according to the number of key control areas within the preset adjustment range of the key control area, and the distribution state of the key control area whose number of complete key control areas contained in the preset adjustment range is greater than the preset number of key control areas is recorded as a dense state, and the distribution state of the key control area whose number of complete key control areas contained in the preset adjustment range is less than or equal to the preset number of key control areas is recorded as a discrete state, and the preset adjustment range is a circular area with the center point of the key control area as the center and the preset adjustment length corresponding to the key control area as the radius, and when the target display video is in the first video analysis state, the preset adjustment length is positively correlated with the key control coefficient of each key control area; The value of the preset number of key areas can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis record. The higher the user's requirements for the video presentation effect and the energy saving effect of the target display panel, the smaller the value of the preset number of key areas. A method for determining the value of the preset number of key areas is provided. The average value of the number of key control areas within the preset adjustment range of each key control area in a dense state in the historical analysis record that meets the user's requirements for the video presentation effect and the energy saving effect of the target display panel is recorded as the preset number of key areas. Each key control area contained in any dense area obtained by division has at least one related area. If the same key control area exists within the preset adjustment range of two key control areas, the two key control areas are determined to be related areas. For any dense area, the driving parameter difference value = , m is the number of key regulatory areas contained in the dense area, is the column driving current value of the jth key control area in the dense area, is the average value of the column driving current values ​​of each key control area in the dense area; The value of the preset driving parameter difference value can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis record. The higher the user's requirement for the video presentation effect of the target display panel, the smaller the value of the preset driving parameter difference value is. A value of the preset driving parameter difference value is provided, and the minimum value of the driving parameter difference value of the dense area for secondary setting of the column driving current value in the first reference record that meets the user's requirement for the video presentation effect of the target display panel is recorded as the preset driving parameter difference value. If the driving parameter difference values ​​of the key control areas in a dense area are greater than the preset driving parameter difference value, the reference driving current value is the average value of the column driving current values ​​of the key control areas in the dense area before the secondary setting.

[0038] Specifically, when determining the key control area of ​​the target display panel according to the display parameters, the target display panel is divided into a number of display areas of the same area, and the display parameters of each display area are periodically detected, and the display area whose display parameters of the regional screen are less than the preset display parameters is recorded as the key control area; The set of control areas is determined according to the distribution status and display parameters of each key control area.

[0039] Among them, when the target display video is in the second video analysis state, at the end of each video analysis cycle, the display parameters of each display area are detected, and the display parameters of any display area are positively correlated with the number of pixel point combinations contained in the regional picture corresponding to the display area at the current moment. The value of the preset display parameter can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis record. The higher the user's requirements for the video presentation effect of the display panel, the smaller the value of the preset display parameter. A method for setting the value of the preset display parameter is provided, and the historical analysis record of the target display video in the second video analysis state is recorded as the second reference record, and the maximum value of the display parameter of each key control area in the second reference record that meets the user's requirements for the video presentation effect of the display panel is recorded as the preset display parameter; When the target display video is in the first video analysis state, the preset adjustment length is positively correlated with the display parameters of each key control area, the display parameter difference value of any control area set is less than the preset display parameter difference value, and each key control area included in the control area set has at least one related area. For a single control area set, the display parameter difference value = , n is the number of key regulatory regions contained in the regulatory region set, is the display parameter of the ith key control area in the control area set, is the average value of the display parameters of each key control area in the control area set; The value of the preset display parameter difference value can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis record. The higher the user's requirement for the video presentation effect of the display panel, the smaller the value of the preset display parameter difference value. A method for determining the preset display parameter difference value is provided, and the average value of the display parameter difference values ​​of each control area set in the second reference record that meets the user's requirement for the video presentation effect of the display panel is recorded as the preset display parameter difference value.

[0040] Specifically, whether to adjust the driving voltage value for the corresponding control area set is determined according to the number of key control areas included in each control area set; If the number of key control areas included in a control area set is greater than the preset number of areas, the driving voltage values ​​of the included display areas are reduced and adjusted according to the reference display parameters of the control area set; The reduction value of the driving voltage value is positively correlated with the reference display parameter; The reference display parameter is an average value of the display parameters of the display areas included in the control area set.

[0041] Among them, the value of the preset number of areas can be determined by the user according to the actual working scenario. For example, the user can set it according to the historical analysis record. A method for determining the value of the preset number of areas is provided. The average value of the number of key control areas in each control area set for adjusting the driving voltage value in the second reference record that meets the user's requirements for the video presentation effect and energy saving effect of the display panel is recorded as the preset number of areas. If the number of key control areas included in a control area set is greater than the preset number of areas, the driving voltage value of the display area included in the control area set is not adjusted. Only when the key control areas are concentrated and the display parameters are not very different, the driving voltage value is adjusted. This can reduce the energy consumption of the driving circuit of the display panel while ensuring the overall presentation effect of the display panel. The driving voltage value is the voltage value corresponding to the electric energy provided by the driving circuit to the display panel.

[0042] See also Figure 4 As shown, the present invention also provides a driving circuit for a display panel, comprising: A drive control module, used to control the column drive current value and drive voltage value of the drive circuit in real time; A voltage regulating submodule, which is connected to the drive control module and is used to output a working voltage to the drive circuit and adjust the drive voltage value according to actual needs; A current regulating submodule, which is connected to the drive control module and is used to adjust the column drive current value of the drive circuit; The driving module is connected to the voltage regulating submodule and the current regulating submodule respectively, and is used to convert the control signal into an electrical signal capable of driving the display panel, so as to control the display pixels of the target display panel.

[0043] In the present invention, each driving circuit is connected to the display panel, and each driving circuit corresponds to a display area.

[0044] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A driving method for a driving circuit of a display panel, characterized in that: include: Determine a video analysis state of a target display video according to a key paragraph ratio and a reference variation coefficient of the key paragraph, and determine a video analysis strategy for the target display video according to the video analysis state; If in the first video analysis state, the dynamic parameters of the corresponding key display area are determined according to the screen display parameter overlap and the video playback parameters, and the key control area is determined according to the dynamic parameters, and the driving current of the driving circuit corresponding to each key control area is adjusted according to the reference screen display difference value and the dynamic duration; If in the second video analysis state, the key control area is determined according to the display parameters, and the key control area is divided to obtain a control area set, and whether to adjust the driving voltage value for the corresponding control area set is determined according to the number of key control areas contained in each control area set.

2. The driving method of the driving circuit of the display panel according to claim 1, characterized in that: Determine the video analysis status of the target display video based on the key paragraph ratio and the reference change coefficient of the key paragraph. If the key paragraph ratio of the target display video is greater than the preset key paragraph ratio or the reference variation coefficient is greater than the preset reference variation coefficient, it is determined that the target display video is in the first video analysis state; If the key paragraph ratio of the target display video is less than or equal to the preset key paragraph ratio or the reference variation coefficient is less than or equal to the preset reference variation coefficient, it is determined that the target display video is in the second video analysis state.

3. The driving method of the driving circuit of the display panel according to claim 2, characterized in that: Extract a number of target video frames with the same duration of target display video intervals, and detect the screen display reference value of each target video frame and the proportion of overlapping pixels between the target video frames; The screen richness of any key segment is positively correlated with the screen reference value of the target video frame it contains; The video frame change coefficient of any key segment is negatively correlated with the percentage of overlapping pixels of the target video frame it contains; The screen display richness of any key section of the target display video is greater than the preset screen display richness and the video frame change coefficient is greater than the preset change coefficient.

4. The driving method of the driving circuit of the display panel according to claim 3, characterized in that: Determine a video analysis strategy for a target display video according to a video analysis state; If the target display video is in the first video analysis state, determining the key control area of ​​the target display panel according to the dynamic parameters; If the target display video is in the second video analysis state, the key control area of ​​the target display panel is determined according to the display parameters.

5. The driving method of the driving circuit of the display panel according to claim 4, characterized in that: When determining the key control area of ​​the target display panel according to the dynamic parameters, the target display panel is divided into a number of display areas of equal area, and the target display video is periodically monitored, and the display area containing the edge of the display subject in the regional screen is recorded as the key display area; Determine the dynamic parameters of the corresponding key display area according to the overlap of the screen display parameters of each key display area and the video playback parameters; The dynamic parameters and the screen display parameters have a negative correlation in their coincidence degree; The dynamic parameter is positively correlated with the video playback parameter.

6. The driving method of the driving circuit of the display panel according to claim 5, characterized in that: Determine the key control area of ​​the target display panel according to the dynamic parameter, and record the key display area whose dynamic parameter is greater than the preset dynamic parameter as the key control area; For a single key control area, the column drive current value of the drive circuit corresponding to the key control area is increased and adjusted according to the reference screen display difference value and the dynamic duration; The increase value of the column driving current value is positively correlated with the reference screen display difference value and the dynamic duration.

7. The driving method of the driving circuit of the display panel according to claim 6, characterized in that: Determine whether to perform secondary setting for the column drive current value according to the distribution state of the key control area and the drive parameter difference value; If the driving parameter difference value of each key control area in a dense area is greater than the preset driving parameter difference value, a secondary setting is performed on the column driving current value of each key control area in the dense area, and the reference driving current value is set to the column driving current value of each key control area in the dense area.

8. The driving method of the driving circuit of the display panel according to claim 4, characterized in that: When determining the key control area of ​​the target display panel according to the display parameters, the target display panel is divided into a number of display areas of equal area, and the display parameters of each display area are periodically detected, and the display area whose display parameters of the regional screen are less than the preset display parameters is recorded as the key control area; The set of control areas is determined according to the distribution status and display parameters of each key control area.

9. The driving method of the driving circuit of the display panel according to claim 8, characterized in that: Determining whether to adjust the driving voltage value for the corresponding control area set according to the number of key control areas included in each control area set; If the number of key control areas included in a control area set is greater than the preset number of areas, the driving voltage values ​​of the included display areas are reduced and adjusted according to the reference display parameters of the control area set; The reduction value of the driving voltage value is positively correlated with the reference display parameter; The reference display parameter is an average value of the display parameters of the display areas included in the control area set.

10. A driving circuit for a display panel using the driving method according to any one of claims 1 to 9, characterized in that: include: A drive control module, used to control the column drive current value and drive voltage value of the drive circuit in real time; A voltage regulating submodule, which is connected to the drive control module and is used to output a working voltage to the drive circuit and adjust the drive voltage value according to actual needs; A current regulating submodule, which is connected to the drive control module and is used to adjust the column drive current value of the drive circuit; The driving module is connected to the voltage regulating submodule and the current regulating submodule respectively, and is used to convert the control signal into an electrical signal capable of driving the display panel, so as to control the display pixels of the target display panel.

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