Display device and control method thereof

Abstract

The invention discloses a display device and a control method thereof. The display device comprises a control module and a display module. The display module comprises a display panel and a driving chip. Under the condition that the display brightness parameter of the display panel changes, the control module provides the image data of the target image and the corresponding gamma configuration parameter under the target brightness level to the driving chip; and the driving core controls the display panel to display a target image under the target brightness level according to the image data and the gamma configuration parameters. The gamma configuration parameters under more brightness levels are stored in the control module, so that the gamma configuration parameters can be directly obtained from the control module or obtained through difference calculation, and the gamma configuration parameters corresponding to the brightness levels stored in the control module are more, so that the brightness level of the gamma configuration parameters is more. Therefore, the calculated gamma configuration parameters are more accurate. Therefore, the brightness change of the display panel is smoother, the chromaticity does not obviously jump, and the display effect of the display module is further improved.

Description

Technical Field

[0001] This application relates to the field of displays, specifically to a display device and its control method. Background Technology

[0002] With the development of display technology, people have increasingly higher requirements for display images.

[0003] During gamma correction, although the display module has multiple brightness levels, only a few are typically corrected. The others are usually obtained through linear interpolation by the driver chip. However, because the photoelectric characteristics of the display module are non-linear, the brightness and chromaticity corresponding to the brightness levels calculated using linear interpolation will deviate, resulting in problems such as uneven brightness changes and abrupt chromaticity shifts. Summary of the Invention

[0004] This application provides a display device and its control method, which can store more gamma configuration parameters, thereby making the brightness changes of the display module smoother and preventing color jumps.

[0005] In a first aspect, embodiments of this application provide a display device, including: a control module; a display module including a display panel and a driver chip, the driver chip being connected to the control module; when the display brightness parameters of the display panel change, the control module is used to provide the driver chip with image data of a target image and gamma configuration parameters corresponding to the target brightness level; the target brightness level is the brightness level corresponding to the adjusted display brightness parameters; the driver chip is used to control the display panel to display the target image at the target brightness level according to the image data and the gamma configuration parameters; when the display brightness parameters of the display panel do not change, the control module is used to provide the driver chip with image data of the target image; the driver chip is used to control the display panel to display the target image according to the image data; wherein, the control module pre-stores multiple gamma configuration parameters for different brightness levels.

[0006] Secondly, embodiments of this application also provide a control method for a display device, applied to the display device corresponding to any of the above embodiments, the method comprising: When the display brightness parameters of the display panel change, the driver chip is provided with the image data of the target image and the gamma configuration parameters corresponding to the target brightness level; the target brightness level is the brightness level corresponding to the adjusted display brightness parameters. Image data of the target image is provided to the driver chip without changing the display brightness parameters of the display panel.

[0007] Thirdly, embodiments of this application also provide a control method for a display device, applied to the display device corresponding to any of the above embodiments, the method comprising: In response to the image data of the target image sent by the control module, the image data is converted into data voltage signals of each sub-pixel in the display panel based on the default gamma configuration parameters; In response to the image data of the target image and the gamma configuration parameters sent by the control module, the image data is converted into data voltage signals of each sub-pixel in the display panel based on the gamma configuration parameters, and the gamma configuration parameters are configured to the default gamma configuration parameters.

[0008] Compared with the prior art, the display device and control method provided in this application achieve at least the following beneficial effects: The display device provided in this application includes: a control module; a display module including a display panel and a driver chip, the driver chip being connected to the control module; when the display brightness parameters of the display panel change, the control module provides the driver chip with image data of a target image and gamma configuration parameters corresponding to the target brightness level; the target brightness level is the brightness level corresponding to the adjusted display brightness parameters; the driver chip controls the display panel to display the target image at the target brightness level according to the image data and the gamma configuration parameters; when the display brightness parameters of the display panel do not change, the control module provides the driver chip with image data of the target image; the driver chip controls the display panel to display the target image according to the image data; wherein, the control module pre-stores gamma configuration parameters for multiple different brightness levels. According to an embodiment of this application, by setting a control module with a storage space larger than the storage space of the driver chip in the display module, the control module can store gamma configuration parameters corresponding to more brightness levels. Therefore, when the display brightness parameters of the display panel change, the gamma configuration parameters corresponding to each brightness level from the initial brightness level to the target brightness level can be directly obtained from the control module. Even if there is no gamma configuration parameter corresponding to a certain brightness level, it can be obtained by the control module through difference calculation. Since the control module stores more gamma configuration parameters corresponding to brightness levels, the gamma configuration parameter corresponding to this brightness level obtained by difference calculation will be more accurate. This makes the display panel smoother during brightness changes and the color will not change significantly, further improving the display effect of the display module. Attached Figure Description

[0009] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0010] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of another display device provided in an embodiment of this application; Figure 3 A schematic diagram of voltage-brightness relationship curves under different grayscale binding points is provided for embodiments of this application. Figure 4 This is a schematic diagram of the structure of a digital-to-analog converter unit provided in an embodiment of this application. Figure 5 A schematic flowchart illustrating a control method for a display device provided in an embodiment of this application; Figure 6 A schematic flowchart illustrating another control method for a display device provided in an embodiment of this application; Figure 7 A schematic flowchart illustrating another control method for a display device provided in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of another display device provided in an embodiment of this application. Detailed Implementation

[0011] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0012] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0013] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0014] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0015] In the embodiments of this application, the term "electrical connection" can refer to a direct electrical connection between two components, or it can refer to an electrical connection between two components via one or more other components.

[0016] In the embodiments of this application, the first node, the second node, and the third node are defined only for the convenience of describing the circuit structure, and the first node, the second node, and the third node are not actual circuit units.

[0017] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the implementation methods provided in the embodiments of this application can be combined with each other without contradiction.

[0018] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the related technologies: With the development of display technology, people have increasingly higher requirements for display images.

[0019] During gamma correction, although the display module has multiple brightness levels, only a few are typically corrected. The others are usually obtained through linear interpolation by the driver chip. However, because the photoelectric characteristics of the display module are non-linear, the brightness and chromaticity corresponding to the brightness levels calculated using linear interpolation will deviate, resulting in problems such as uneven brightness changes and abrupt chromaticity shifts.

[0020] To address the aforementioned technical problems, this application provides a display device and its control method. By setting a control module with a storage space larger than that of the driver chip in the display module, the control module can store more gamma configuration parameters corresponding to brightness levels. Therefore, when the display brightness parameters of the display panel change, the gamma configuration parameters corresponding to each brightness level from the initial brightness level to the target brightness level can be directly obtained from the control module. Even if there is no gamma configuration parameter corresponding to a certain brightness level, it can be obtained through difference calculation by the control module. Since the control module stores more gamma configuration parameters corresponding to brightness levels, the gamma configuration parameter corresponding to this brightness level obtained by difference calculation will be more accurate. This makes the display panel smoother during changes in brightness levels, and the color will not change significantly, further improving the display effect of the display module.

[0021] Based on the above-mentioned technical problems, this application provides a display device and a control method thereof. The embodiments of this application will be described below with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the structure of a display device provided in an embodiment of this application, such as... Figure 1 As shown, the display device 100 includes a control module 10 and a display module 20.

[0023] The display module 20 includes a display panel 21 and a driver chip 22, which is connected to the control module 10.

[0024] For example, the control module 10 has a larger storage space than the driver chip 22 in the display module 20. Therefore, multiple gamma configuration parameters for different brightness levels can be pre-stored in the control module 10, reducing the number of gamma configuration parameters stored in the driver chip 22, or even eliminating the need to store gamma configuration parameters in the driver chip 22. This reduces the storage space of the driver chip 22, allowing the use of a lower-cost driver chip 22 in the manufacturing of the display module 20, thereby reducing the manufacturing cost of the display module 20. Furthermore, since the control module 10 has a faster processing speed than the driver chip 22 in the display module 20, the processing calculations related to gamma configuration parameters can be handled by the control module 10 even when the driver chip 22 does not need to store gamma configuration parameters. This eliminates the space originally used by the driver chip 22 for gamma configuration parameter processing, or allows it to be used for other parameter operations. This improves the processing capability of the driver chip 22 for other parameters, or reduces the processing space of the driver chip 22, further reducing the manufacturing cost of the display module 20.

[0025] When the display brightness parameters of the display panel 21 change, the control module 10 provides the driver chip 22 with image data of the target image and gamma configuration parameters corresponding to the target brightness level; the target brightness level is the brightness level corresponding to the adjusted display brightness parameters; the driver chip 22 controls the display panel 21 to display the target image at the target brightness level according to the image data and gamma configuration parameters.

[0026] For example, when the display brightness parameters of the display panel 21 change, the control module 10 provides the driver chip 22 with the gamma configuration parameters corresponding to the target brightness level and the image data of the target image stored internally. The driver chip 22 controls the display panel 21 to display the target image at the target brightness level according to the received image data and gamma configuration parameters.

[0027] As an example, the control module 10 can store the gamma configuration parameters corresponding to all brightness levels. Therefore, it is not necessary to store the gamma configuration parameters in the driver chip 22, nor is it necessary for the control module 10 and the driver chip 22 to perform interpolation calculations for brightness levels for which gamma configuration parameters are not stored to obtain the corresponding gamma configuration parameters. Furthermore, since the control module 10 stores the gamma configuration parameters for all brightness levels, when the brightness parameters change, each change in the brightness level of the display panel 21 is based on the stored and corrected gamma configuration parameters. Compared to gamma configuration parameters obtained by interpolation calculation, this application ensures that the displayed image corresponding to each brightness level of the display panel 21 does not have brightness and chromaticity deviations when the display panel 21 changes from the current brightness level to the target brightness level. Therefore, the display panel 21 is smoother during brightness changes, and the chromaticity does not jump, further improving the display effect of the display module 20.

[0028] As another example, the control module 10 can store gamma configuration parameters corresponding to some brightness levels, while the driver chip 22 stores another set of gamma configuration parameters. When the display panel 21 changes between multiple brightness levels from the current brightness level to the target brightness level, the driver chip 22 can directly use the gamma configuration parameters for the brightness levels already stored in the control module 10, and the driver chip 22 can also retrieve and use the gamma configuration parameters for the brightness levels already stored in the control module 10. If some control modules 10 and driver chips 22 do not store the gamma configuration parameters corresponding to the brightness levels, they can be obtained by difference calculation. Since control modules 10 and driver chips 22 jointly store a larger number of gamma configuration parameters for brightness levels, the error in the gamma configuration parameters obtained by difference calculation will be smaller. Therefore, after the brightness parameters of display panel 21 change, under the multiple brightness level changes between the current brightness level and the target brightness level, the display image corresponding to each brightness level of display panel 21 does not have brightness and color deviation, or the brightness and color deviation is reduced. Therefore, the brightness process of display panel 21 is smoother, and the color will not change significantly, further improving the display effect of display module 20.

[0029] When the display brightness parameter of the display panel 21 remains unchanged, the control module 10 provides image data of the target image to the driver chip 22; the driver chip 22 controls the display panel 21 to display the target image according to the image data.

[0030] For example, if the display brightness parameter of the display panel 21 does not change, the display panel 21 can continue to use the gamma configuration parameters corresponding to each brightness level under the current display brightness parameter for display, without adjusting the gamma configuration parameters corresponding to each brightness level. The driver chip 22 can directly display the target image based on the image data of the target image provided by the control module 10.

[0031] According to the embodiments of this application, since the storage space of the control module 10 is larger than the storage space of the driver chip 22 in the display module 20, the control module 10 can store more gamma configuration parameters corresponding to brightness levels. Therefore, when the display brightness parameters of the display panel 21 change, the gamma configuration parameters corresponding to each brightness level from the initial brightness level to the target brightness level of the display panel 21 can be directly obtained from the control module 10. Even if there is no gamma configuration parameter corresponding to a certain brightness level, it can be obtained by the control module 10 through difference calculation. Since the control module 10 stores more gamma configuration parameters corresponding to brightness levels, the gamma configuration parameters corresponding to this brightness level obtained by difference calculation will be more accurate. As a result, during the overall change of the display panel 21 from the initial brightness level to the target brightness level, the display image of the display panel 21 at each brightness level does not have any brightness and color deviation, or the brightness and color deviation is reduced. Therefore, the display panel 21 is smoother during the change of brightness level, and the color does not change significantly, further improving the display effect of the display module 20.

[0032] It should be noted that, Figure 1 The layout of the control module 10, display panel 21 and driver chip 22 is only an example and is not specifically limited here.

[0033] In some embodiments, Figure 2 This is a schematic diagram of the structure of another display device provided in the embodiments of this application, as shown below. Figure 2 As shown, the control module 10 includes a storage unit 11 and a processing unit 12.

[0034] The storage unit 11 is used to store preset gamma configuration parameters for different brightness levels; wherein, the preset gamma configuration parameters include multiple grayscale binding points and the register values ​​corresponding to the grayscale binding points.

[0035] When the display brightness parameters of the display panel 21 change and the target brightness level does not match the brightness level stored in the driver chip 22, the processing unit 12 is used to determine the interpolation calculation relationship according to the voltage-brightness relationship curve, and to obtain the gamma configuration parameters corresponding to the target brightness level by interpolation calculation according to the interpolation calculation relationship and the preset gamma configuration parameters.

[0036] For example, the driver chip 22 is connected to the processing unit 12, and the processing unit 12 is connected to the storage unit 11. The storage unit 11 of the control module 10 stores multiple grayscale binding points at different brightness levels and the corresponding register values ​​of these grayscale binding points. When the display brightness parameters of the display panel 21 change, the driver chip 22 matches the target brightness level with the pre-stored brightness levels within the driver chip 22. If it is determined that the driver chip 22 does not store the gamma configuration parameters corresponding to the target brightness level, and the storage unit 11 also does not store the gamma configuration parameters corresponding to the target brightness level, the processing unit 12 within the control module 10 determines the interpolation calculation relationship based on the voltage-brightness relationship curve. Figure 3 A schematic diagram of the voltage-brightness relationship curve under different grayscale binding points is provided for an embodiment of this application, as shown below. Figure 3 As shown, for example, the voltage-brightness relationship curves corresponding to grayscale binding points band0 and band1 are different for different grayscale binding points. Therefore, the processing unit 12 needs to determine the interpolation calculation relationship based on the voltage-brightness relationship curves corresponding to different grayscale binding points. The processing unit 12 then uses the interpolation calculation method to obtain the gamma configuration parameters corresponding to the target brightness level based on the interpolation calculation relationship and the preset gamma configuration parameters. Since the storage unit 11 of the control module 10 stores a larger number of gamma configuration parameters for brightness levels, the error of the gamma configuration parameters obtained by the difference calculation will be smaller. Therefore, after the brightness parameters of the display panel 21 change, the brightness and chromaticity deviation of the display image corresponding to each brightness level of the display panel 21 is reduced under the multiple brightness level changes from the current brightness level to the target brightness level. Therefore, the display panel 21 is smoother in the brightness process, and the chromaticity will not change significantly, further improving the display effect of the display module 20.

[0037] In some embodiments, when the display brightness parameter of the display panel 21 changes and the target brightness level matches one of the multiple brightness levels pre-stored in the driver chip 22, the gamma configuration parameter corresponding to the brightness level pre-stored in the driver chip 22 is directly adopted.

[0038] For example, when the display panel 21 changes between multiple brightness levels from the current brightness level to the target brightness level, the driver chip 22 can directly use the gamma configuration parameters of the brightness levels already stored in the driver chip 22. If the driver chip 22 does not have a pre-stored target brightness level, it can further determine whether the storage unit 11 stores a brightness level matching the target brightness level. If the storage unit 11 already stores a brightness level matching the target brightness level, the driver chip 22 can directly use the gamma configuration parameters corresponding to the brightness level pre-stored in the storage unit 11. Because the driver chip 22 or the storage unit 11 stores gamma configuration parameters corresponding to the brightness level matching the target brightness level, the displayed image corresponding to each brightness level of the display panel 21 does not have brightness or color deviations. Therefore, the display panel 21 is smoother during brightness changes, and the color does not jump, further improving the display effect of the display module 20.

[0039] In some embodiments, the driver chip 22 includes a digital-to-analog converter unit 221.

[0040] The driver chip 22 is used to control the digital-to-analog converter 221 to convert the image data of the target image sent by the control module 10 into data voltage signals of each sub-pixel in the display panel 21 based on the default gamma configuration parameters, and to convert the image data of the target image and the gamma configuration parameters sent by the control module 10 into data voltage signals of each sub-pixel in the display panel 21 based on the gamma configuration parameters, and to configure the gamma configuration parameters to the default gamma configuration parameters.

[0041] For example, Figure 4 This is a schematic diagram of the structure of a digital-to-analog converter unit provided in an embodiment of this application, as shown below. Figure 4As shown, the digital-to-analog converter 221 includes multiple first resistors R connected in series. The resistance values ​​of the multiple first resistors R can be the same or different. Each first resistor R corresponds to a different voltage output terminal, such as a first voltage output terminal V1, a second voltage output terminal V2, a third voltage output terminal V3, etc., as well as a voltage output terminal V0 of the first reference voltage terminal VGMP and a voltage output terminal Vn of the second reference voltage terminal VGSP. The first end of the first first resistor R is connected to the first reference voltage terminal VGMP, and the second end of the last first resistor R is connected to the second reference voltage terminal VGSP. When the display brightness parameters of the display panel 21 do not change, the control module 10 directly provides the image data of the target image to the driver chip 22. When the driver chip 22 receives the image data of the target image sent by the control module 10, it controls the digital-to-analog converter 221 to convert the image data into data voltage signals of each sub-pixel in the display panel 21 based on the default gamma configuration parameters, thereby illuminating each sub-pixel in the display panel 21 and displaying the target image.

[0042] When the display brightness parameters of the display panel 21 change, the control module 10 provides the driver chip 22 with image data of the target image and gamma configuration parameters corresponding to the target brightness level. Upon receiving the image data and gamma configuration parameters from the control module 10, the driver chip 22 converts the image data into data voltage signals for each sub-pixel in the display panel 21 based on the gamma configuration parameters, thereby displaying the target image. The driver chip 22 then reconfigures the gamma configuration parameters at the target brightness level to the default gamma configuration parameters, so that each sub-pixel in the display panel 21 is illuminated according to the gamma configuration parameters at the target brightness level when it is subsequently illuminated.

[0043] In some embodiments, the display brightness parameter includes at least one of the following: brightness parameter, refresh rate parameter, and temperature parameter.

[0044] For example, if at least one of the brightness parameters, refresh rate parameters, and temperature parameters of the display panel 21 changes, the control module 10 will change the target brightness level so that the display panel 21 displays using the gamma configuration parameters corresponding to the target brightness level.

[0045] The display brightness parameters of the display panel 21 may change for example, such as changes in brightness parameters, changes in refresh rate parameters, changes in temperature parameters, changes in both brightness and refresh rate parameters, changes in both brightness and temperature parameters, changes in both refresh rate and temperature parameters, or changes in all of the brightness, refresh rate, and temperature parameters.

[0046] In some embodiments, the display device 100 further includes a high-speed transmission interface (not shown in the figure); the driver chip 22 is connected to the control module 10 via the high-speed transmission interface.

[0047] For example, the display device 100 is provided with a high-speed transmission interface, which may be, for example, a Mobile Industry Processor Interface (MIPI). The MIPI interface enables high-speed, low-power, and interference-resistant data transmission between various chips. The driver chip 22 and the control module 10 transmit data through the high-speed transmission interface, enabling the transmission of display data between blanking zones (Porch).

[0048] In some embodiments, the driver chip 22 includes a storage space for storing gamma configuration parameters corresponding to at least one brightness level.

[0049] For example, the driver chip 22 is provided with a storage space for storing gamma configuration parameters corresponding to at least one brightness level, while the storage space for gamma configuration parameters corresponding to other brightness levels is provided in the control module 10. Therefore, while ensuring that the number of gamma configuration parameters corresponding to each brightness level is not reduced, the storage space of the driver chip can be reduced, thereby reducing the manufacturing cost of the display module 20.

[0050] In some embodiments, the driver chip 22 is further configured to adjust the driving voltage value of the driver chip 22 upon receiving gamma configuration parameters.

[0051] For example, the driving voltage value can be, for instance, the voltage value provided by the first reference voltage terminal VGMP, the voltage value provided by the second reference voltage terminal VGSP, or the first light-emitting driving voltage ELVDD and the second light-emitting driving voltage ELVSS of the pixel driving circuit. Upon receiving the gamma configuration parameters, the driving chip 22 can adjust the driving voltage value of itself, thereby adjusting the data voltage signal output to the sub-pixels to change the brightness of each sub-pixel.

[0052] Figure 5 This is a flowchart illustrating a control method for a display device provided in an embodiment of this application. The control method is applied to the display device corresponding to any of the above embodiments, such as... Figure 5 As shown, the method includes: S310-S330.

[0053] S310. Determine whether the display brightness parameters of the display panel have changed.

[0054] S320: When the display brightness parameters of the display panel change, provide the driver chip with the image data of the target image and the gamma configuration parameters corresponding to the target brightness level.

[0055] The target brightness level is the brightness level corresponding to the adjusted display brightness parameters.

[0056] For example, when the display brightness parameters of the display panel change, the control module provides the driver chip with the gamma configuration parameters corresponding to the target brightness level, which are stored internally, as well as the image data of the target image. The control module may store gamma configuration parameters corresponding to some brightness levels. When the display panel changes brightness levels from the current level to the target brightness level, the driver chip can directly use the gamma configuration parameters for the brightness levels already stored in the driver chip. The gamma configuration parameters for brightness levels already stored in the control module are provided to the driver chip by the control module. If there are brightness levels for which neither the control module nor the driver chip stores gamma configuration parameters, the control module can obtain them using interpolation calculation and provide them to the driver chip. Furthermore, since the control module and the driver chip jointly store a larger number of gamma configuration parameters for more brightness levels, the error in the gamma configuration parameters obtained through interpolation calculation will be smaller. The control module also provides the image data of the target image to the driver chip. The driver chip then displays the target image based on the image data of the target image and the gamma configuration parameters corresponding to the target brightness level. Therefore, when the brightness parameters of the display panel change, the display image corresponding to each brightness level of the display panel does not have any deviation in brightness and color, or the deviation in brightness and color is reduced. As a result, the display panel is smoother in the brightness process, and the color does not change significantly, further improving the display effect of the display module.

[0057] S330: Provide image data of the target image to the driver chip without changing the display brightness parameters of the display panel.

[0058] For example, if the display brightness parameters of the display panel do not change, the display panel can continue to use the gamma configuration parameters corresponding to each brightness level under the current display brightness parameters for display, without the need to adjust the gamma configuration parameters corresponding to each brightness level. The driver chip can directly display the target image based on the image data of the target image provided by the control module.

[0059] According to the embodiments of this application, since the storage space of the control module is larger than that of the driver chip in the display module, the control module can store more gamma configuration parameters corresponding to brightness levels. Therefore, when the display brightness parameters of the display panel change, the gamma configuration parameters corresponding to each brightness level from the initial brightness level to the target brightness level of the display panel can be directly obtained from the control module. Even if there is no gamma configuration parameter corresponding to a certain brightness level, it can be obtained by the control module through difference calculation. Since the control module stores more gamma configuration parameters corresponding to brightness levels, the gamma configuration parameter corresponding to this brightness level obtained by difference calculation will be more accurate. As a result, during the overall change of the display panel from the initial brightness level to the target brightness level, there is no deviation in brightness and color of the displayed image at each brightness level, or the deviation in brightness and color is reduced. Therefore, the display panel is smoother during the change of brightness level, and there is no obvious jump in color, further improving the display effect of the display module.

[0060] In some embodiments, Figure 6 A flowchart illustrating another control method for a display device provided in this application embodiment is shown below. Figure 6 As shown, S320 includes S321 and S322.

[0061] S321. When the display brightness parameters of the display panel change and the target brightness level does not match the brightness level stored in the driver chip, the interpolation calculation relationship is determined based on the voltage-brightness relationship curve.

[0062] S322. Based on the interpolation calculation relationship and the preset gamma configuration parameters, the gamma configuration parameters corresponding to the target brightness level are obtained by interpolation calculation.

[0063] For example, the control module stores multiple grayscale binding points at different brightness levels and their corresponding register values. When the display brightness parameters of the display panel change, and when it is determined that neither the driver chip nor the control module stores the gamma configuration parameters corresponding to the target brightness level, the control module determines the interpolation calculation relationship based on the voltage-brightness relationship curve. Since the voltage-brightness relationship curves differ for different grayscale binding points, the control module needs to determine the interpolation calculation relationship based on these curves. The control module then uses the interpolation calculation relationship and the preset gamma configuration parameters to obtain the gamma configuration parameters corresponding to the target brightness level through interpolation calculation. Because the control module stores a larger number of gamma configuration parameters for brightness levels, the error in the gamma configuration parameters obtained by differential calculation is smaller. Therefore, when the brightness parameters of the display panel change, the brightness and color deviation of the displayed image corresponding to each brightness level of the display panel is reduced as the display panel changes from the current brightness level to the target brightness level. As a result, the display panel is smoother in brightness changes and there are no obvious color jumps, further improving the display effect of the display module.

[0064] When the display brightness parameters of the display panel change, and the target brightness level matches one of the multiple brightness levels pre-stored in the driver chip, the control module does not perform calculations, and the driver chip directly uses the gamma configuration parameters corresponding to the brightness level pre-stored in the driver chip.

[0065] For example, when the display panel changes between multiple brightness levels from the current brightness level to the target brightness level, the driver chip can directly use the gamma configuration parameters of the brightness levels already stored in the driver chip. If the driver chip does not pre-store the target brightness level, it can further determine whether a brightness level matching the target brightness level is stored in the storage unit. If a brightness level matching the target brightness level is stored in the storage unit, the driver chip can directly use the gamma configuration parameters corresponding to the brightness level pre-stored in the storage unit. Because the driver chip or storage unit stores the gamma configuration parameters corresponding to the brightness level matching the target brightness level, the displayed image at each brightness level of the display panel does not have brightness and color deviations. Therefore, the display panel's brightness changes more smoothly, and the color does not jump, further improving the display effect of the display module.

[0066] Figure 7 This is a flowchart illustrating another control method for a display device provided in an embodiment of this application. The control method is applied to the display device corresponding to any of the above embodiments, such as... Figure 7 As shown, the method includes: S410-S430.

[0067] S410: Obtain data information provided by the control module.

[0068] S420: In response to the image data of the target image sent by the control module, the image data is converted into data voltage signals of each sub-pixel in the display panel based on the default gamma configuration parameters.

[0069] For example, in response to the image data of the target image sent by the control module, the driver chip converts the image data into data voltage signals for each sub-pixel in the display panel based on default gamma configuration parameters. When the display brightness parameters of the display panel remain unchanged, the control module directly provides the image data of the target image to the driver chip. Upon receiving the image data of the target image from the control module, the driver chip controls the digital-to-analog converter to convert the image data into data voltage signals for each sub-pixel in the display panel based on the default gamma configuration parameters, thereby illuminating each sub-pixel in the display panel and displaying the target image.

[0070] S430, in response to the image data of the target image and the gamma configuration parameters sent by the control module, converts the image data into data voltage signals of each sub-pixel in the display panel based on the gamma configuration parameters, and configures the gamma configuration parameters to the default gamma configuration parameters.

[0071] For example, when the display brightness parameters of the display panel change, the control module provides the driver chip with image data of the target image and the corresponding gamma configuration parameters at the target brightness level. Upon receiving the image data and gamma configuration parameters from the control module, the driver chip converts the image data into data voltage signals for each sub-pixel in the display panel based on the gamma configuration parameters, thereby displaying the target image. The driver chip then reconfigures the gamma configuration parameters at the target brightness level to the default gamma configuration parameters, so that each sub-pixel in the display panel is illuminated according to the gamma configuration parameters at the target brightness level when it is subsequently lit.

[0072] This application also provides a display device. Please refer to... Figure 8 , Figure 8 This is a schematic diagram of the structure of another display device provided in an embodiment of this application. Figure 8 The provided display device 100 includes a display module 20. Figure 8This embodiment uses a mobile phone as an example to illustrate the display device 100. It is understood that the display device provided in this application embodiment can be other display devices with display functions, such as wearable products, computers, televisions, and in-vehicle display devices. This application does not impose specific limitations on these. The display device provided in this application embodiment has the beneficial effects of the display device provided in this application embodiment. For details, please refer to the specific descriptions of the display device in the above embodiments. These descriptions will not be repeated here.

[0073] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display device, characterized in that, include: Control module; The display module includes a display panel and a driver chip, wherein the driver chip is connected to the control module. When the display brightness parameters of the display panel change, the control module provides the driver chip with image data of the target image and gamma configuration parameters corresponding to the target brightness level; the target brightness level is the brightness level corresponding to the adjusted display brightness parameters; the driver chip controls the display panel to display the target image at the target brightness level according to the image data and the gamma configuration parameters. When the display brightness parameter of the display panel remains unchanged, the control module provides image data of the target image to the driver chip; the driver chip controls the display panel to display the target image based on the image data. The control module pre-stores gamma configuration parameters for multiple brightness levels.

2. The display device according to claim 1, characterized in that, The control module includes a storage unit and a processing unit; The storage unit is used to store preset gamma configuration parameters for different brightness levels; wherein, the preset gamma configuration parameters include multiple grayscale binding points and the register values ​​corresponding to the grayscale binding points; When the display brightness parameters of the display panel change, and the target brightness level does not match the brightness level pre-stored in the driver chip, the processing unit is used to determine the interpolation calculation relationship based on the voltage-brightness relationship curve. And, it is used to obtain the gamma configuration parameters corresponding to the target brightness level by interpolation calculation based on the interpolation calculation relationship and the preset gamma configuration parameters.

3. The display device according to claim 2, characterized in that, If the display brightness parameter of the display panel changes and the target brightness level matches one of the multiple brightness levels pre-stored in the driver chip, the gamma configuration parameter corresponding to the brightness level pre-stored in the driver chip is directly adopted.

4. The display device according to claim 1, characterized in that, The driver chip includes a digital-to-analog converter unit; The driver chip is used to control the digital-to-analog converter to convert the image data of the target image sent by the control module into data voltage signals for each sub-pixel in the display panel based on default gamma configuration parameters, in response to the image data of the target image sent by the control module. In addition, image data and gamma configuration parameters of the target image sent by the control module are used to convert the image data into data voltage signals of each sub-pixel in the display panel based on the gamma configuration parameters, and the gamma configuration parameters are configured as default gamma configuration parameters.

5. The display device according to claim 1, characterized in that, The display brightness parameter includes at least one of the following: brightness parameter, refresh rate parameter, and temperature parameter.

6. The display device according to claim 1, characterized in that, The display device also includes a high-speed transmission interface; The driver chip and the control module are connected via the high-speed transmission interface.

7. The display device according to claim 1, characterized in that, The driver chip includes storage space for storing gamma configuration parameters corresponding to at least one brightness level.

8. The display device according to claim 1, characterized in that, The driver chip is also used to adjust the driving voltage value of the driver chip upon receiving the gamma configuration parameters.

9. A control method for a display device, characterized in that, Applied to a display device as described in any one of claims 1-8, the method comprises: When the display brightness parameters of the display panel change, the driver chip is provided with image data of the target image and gamma configuration parameters corresponding to the target brightness level; the target brightness level is the brightness level corresponding to the adjusted display brightness parameters. Image data of the target image is provided to the driver chip when the display brightness parameters of the display panel remain unchanged.

10. The control method according to claim 9, characterized in that, When the display brightness parameters of the display panel change, providing the driver chip with image data of the target image and gamma configuration parameters corresponding to the target brightness level includes: When the display brightness parameters of the display panel change and the target brightness level does not match the brightness level stored in the driver chip, the interpolation calculation relationship is determined according to the voltage-brightness relationship curve. Based on the interpolation calculation relationship and the preset gamma configuration parameters, the gamma configuration parameters corresponding to the target brightness level are obtained by interpolation calculation.

11. A control method for a display device, characterized in that, Applied to a display device as described in any one of claims 1-8, the method comprises: In response to the image data of the target image sent by the control module, the image data is converted into data voltage signals of each sub-pixel in the display panel based on the default gamma configuration parameters; In response to the image data of the target image and the gamma configuration parameters sent by the control module, the image data is converted into data voltage signals of each sub-pixel in the display panel based on the gamma configuration parameters, and the gamma configuration parameters are configured as the default gamma configuration parameters.

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