Display panel brightness adjustment method and device, and display device

Abstract

The present invention provides a brightness adjustment method and device for a display panel, and a display device. The brightness adjustment method processes the received grayscale data, inserts multiple transition grayscales at least between grayscale 0 and grayscale 1 to form target grayscale data, so as to provide sufficient compensation space below grayscale 1. When the brightness of the display panel is adjusted, brightness compensation can be comprehensively realized based on the original grayscale data and the inserted multiple transition grayscale data, that is, the function of brightness compensation from grayscale 1 to below is realized, so that the display panel can effectively perform low grayscale compensation.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a method and device for adjusting the brightness of a display panel, and a display device. Background Art

[0002] With the continuous development of science and technology, various display devices have been widely used in people's lives and work, bringing great convenience to people's daily lives. Among them, the display panel is one of the important components of the display device.

[0003] OLED (Organic Light-Emitting Diode), as a current-type light-emitting device, has been increasingly used in high-performance displays. Due to its self-luminous properties, it has the advantages of high contrast, ultra-lightness, and flexibility compared to LCD (Liquid Crystal Display) display technology.

[0004] Mura is a common undesirable phenomenon in OLED display technology, which is mainly caused by the difference in characteristics of each TFT (Thin Film Transistor) due to the immature TFT process. Demura is a compensation method for mura, which is divided into internal compensation and external compensation. Internal compensation uses the compensation pixel circuit to compensate for the characteristic difference of TFT. External compensation detects the difference of each pixel through optical or electrical means, and compensates for it by changing the driving voltage.

[0005] However, currently, when a display panel displays a low grayscale image, it is not possible to effectively eliminate the Mura phenomenon of the display panel when the display panel displays a low grayscale image. Summary of the invention

[0006] In view of this, in order to solve the above problems, the present invention provides a method and device for adjusting the brightness of a display panel, and a display device, and the technical solution is as follows:

[0007] A brightness adjustment method for a display panel, wherein the display panel includes a plurality of sub-pixels, and the brightness adjustment method includes:

[0008] Obtaining grayscale data received by the display panel;

[0009] Processing the grayscale data, inserting a plurality of transition grayscales at least between grayscale 0 and grayscale 1, to form target grayscale data;

[0010] The brightness of the sub-pixel is adjusted based on the target grayscale data.

[0011] A brightness adjustment device for a display panel, the display panel comprising a plurality of sub-pixels, the brightness adjustment device comprising:

[0012] An acquisition module, used for acquiring grayscale data received by the display panel;

[0013] A data processing module, used for processing the grayscale data, inserting a plurality of transition grayscales at least between grayscale 0 and grayscale 1, to form target grayscale data;

[0014] A brightness adjustment module is used to adjust the brightness of the sub-pixel based on the target grayscale data.

[0015] A display device comprises the brightness adjustment device mentioned above.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides a brightness adjustment method and device for a display panel, and a display device. The brightness adjustment method processes the received grayscale data, inserts multiple transition grayscales at least between grayscale 0 and grayscale 1 to form target grayscale data, so as to provide sufficient compensation space below grayscale 1. When the brightness of the display panel is adjusted, brightness compensation can be comprehensively realized based on the original grayscale data and the inserted multiple transition grayscale data, that is, the function of brightness compensation from grayscale 1 to below is realized, so that the display panel can effectively perform low grayscale compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A schematic diagram showing the effect of a display panel displaying at a low gray scale;

[0020] Figure 2 for Figure 1 A schematic diagram of the voltage values ​​required for uniform brightness compensation of each gray scale in three regions of the display panel when displaying at low gray scales;

[0021] Figure 3 A schematic flow chart of a method for adjusting brightness of a display panel provided by an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of grayscale data after data processing provided by an embodiment of the present invention;

[0023] Figure 5 A technical solution based on the present invention is provided for the embodiment of the present invention Figure 1 A schematic diagram of the voltage values ​​required for uniform brightness compensation of each gray scale in three regions of the display panel when displaying at low gray scales;

[0024] Figure 6 A schematic flow chart of another method for adjusting brightness of a display panel provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of another grayscale data after data processing provided by an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of another grayscale data after data processing provided by an embodiment of the present invention;

[0027] Fig. 9 A schematic diagram of performing data processing on the grayscale data provided by an embodiment of the present invention;

[0028] Fig.10 A schematic flow chart of another method for adjusting brightness of a display panel provided in an embodiment of the present invention;

[0029] Fig.11 A schematic diagram of a display effect before and after low grayscale compensation based on the technical solution of the present application provided in an embodiment of the present invention;

[0030] Fig.12 A schematic diagram of the principle structure of a brightness adjustment device for a display panel provided by an embodiment of the present invention;

[0031] Fig.13 A schematic diagram of a display device provided by an embodiment of the present invention;

[0032] Fig.14 A schematic diagram of the hardware architecture of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Based on the background technology, refer to Figure 1 , Figure 1 This is a schematic diagram of the display panel's low grayscale display effect. Figure 2 , Figure 2for Figure 1 Schematic diagram of the voltage value required for uniform brightness compensation of three areas of the display panel at each gray scale when the display panel is displayed at low gray scale, where Figure 1 The brightness of the first area is less than that of the third area, which is less than that of the second area. Figure 1 The first, second and third areas in the image show different brightness, which reflects that the Mura of the display panel is more serious when displaying at low grayscale. It should be noted that Figure 2 The arrow in the middle points to the direction in which the driving voltage increases.

[0035] Since 0 grayscale display is a dark state display, after compensating the second area and the third area, as shown in FIG. Figure 2 In the second area shown, all grayscales below 8 are 0 grayscale, and in the third area, all grayscales below 7 are also 0 grayscale. Obviously, there will be over-compensation of low grayscales, that is, after compensation in the second area, there will be black spots in grayscales 1 to 7 to varying degrees, and after compensation in the third area, there will be black spots in grayscales 1 to 6 to varying degrees. In other words, after compensation in the second and third areas, some grayscales that should have brightness will directly become 0 grayscale due to over-compensation.

[0036] In order to solve the above-mentioned technical problem of over-compensation in the prior art, the compensation data of low grayscale is usually reduced by a proportional coefficient or no compensation is performed at low grayscale. Obviously, this technology will still cause serious Mura phenomenon in the low grayscale display of the display panel.

[0037] Based on this, the embodiments of the present invention provide a method and device for adjusting the brightness of a display panel, and a display device, so as to ensure that the display panel can effectively perform low grayscale compensation.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] refer to Figure 3 , Figure 3 A schematic flow chart of a brightness adjustment method for a display panel provided in an embodiment of the present invention, wherein the display panel includes a plurality of sub-pixels, and the brightness adjustment method includes:

[0040] S101: Obtaining grayscale data received by a display panel.

[0041] S102: Processing the grayscale data, inserting a plurality of transition grayscales at least between grayscale 0 and grayscale 1, to form target grayscale data.

[0042] S103: adjusting the brightness of the sub-pixel based on the target grayscale data.

[0043] Specifically, in the embodiment of the present invention, due to the differences in TFT and OLED characteristics during the design of the display panel, in order to ensure that the brightness of the entire display panel can be low enough under the 0 grayscale display, the driving voltage corresponding to the 0 grayscale will reserve sufficient threshold voltage. For example, the measured center point dark state voltage of the display panel is 5.7V. Then, in order to ensure that the brightness of the entire display panel is displayed in a black state under the 0 grayscale display, the driving voltage corresponding to the 0 grayscale will be set to 7V, that is, based on the center point dark state voltage of 5.7V, a threshold voltage of 0.5V or above will usually be reserved.

[0044] It should be noted that the above settings of 5.7V, 7V and 0.5V are only described in the form of examples and are not limited in the embodiments of the present invention, and can be determined according to actual needs.

[0045] Combination Figure 1 and Figure 2 , assuming that the first area is the central area of ​​the display panel, it is already in a dark state display at this time, that is, whether the display panel is driven by 5.7V to display 0 grayscale or by 7V to display 0 grayscale, the first area can meet the dark state display requirements, that is, the driving voltage corresponding to 0 grayscale in the first area can be 5.7V or 7V.

[0046] Then, in order to ensure that all areas of the entire display panel can meet the dark state display requirements under 0 grayscale display, it is obvious that Figure 2 As shown, the display panel needs to be driven by the driving voltage corresponding to 0 grayscale in the second area to display 0 grayscale. The driving voltage corresponding to 0 grayscale in the second area is the maximum driving voltage of the display panel. For example, the driving voltage corresponding to 0 grayscale in the second area is 7V.

[0047] That is to say, in the embodiment of the present invention, the driving voltage corresponding to 0 grayscale in the grayscale data is 7V, and the driving voltage corresponding to 0 grayscale in the target grayscale data is also 7V, that is, the voltage corresponding to 0 grayscale in the grayscale data is equal to the voltage corresponding to 0 grayscale in the target grayscale data, so as to ensure that all areas of the entire display panel can meet the dark display requirements under 0 grayscale display.

[0048] Furthermore, the DDIC (Display Driver Integrated Circuit) in the display panel first obtains the received grayscale data, which at least includes mapping data of grayscale and corresponding driving voltage, processes the received grayscale data, and inserts a plurality of transition grayscales between grayscale 0 and grayscale 1 to form target grayscale data. Figure 4 , Figure 4A schematic diagram of grayscale data after data processing provided in an embodiment of the present invention, that is, at least -1, -2, ..., -H such transition grayscales are inserted between grayscale 0 and grayscale 1. For example, the driving voltage corresponding to grayscale 0 is 7V, and the driving voltage corresponding to grayscale 1 is 4.7V. Then the driving voltages corresponding to the transition grayscales -1, -2, ..., -H are respectively between 4.7V and 7V.

[0049] For further reference, Figure 5 , Figure 5 A technical solution based on the present invention is provided for the embodiment of the present invention Figure 1 The following is a schematic diagram of the voltage values ​​required for uniform brightness compensation of each gray scale in the three regions of the display panel when displaying low gray scales, as shown in Figure 5 The driving voltages for the first region, the second region and the third region to display grayscale 0 are the same, for example, all are 7V.

[0050] Since at least -1, -2, ..., -H transition gray levels are inserted between gray level 0 and gray level 1 in the embodiment of the present invention, it is obvious that based on the embodiment of the present invention, Figure 1 When performing brightness compensation on the second and third areas, the brightness compensation on the second and third areas can be comprehensively realized based on the original grayscale data and the inserted multiple transition grayscale data, and the grayscale that should have brightness in the second and third areas after compensation will not be directly converted to 0 grayscale due to over-compensation. The function of compensating from 1 grayscale to below can be realized, and low grayscale compensation can be effectively performed.

[0051] It should be noted that the number of transition grayscales inserted between grayscale 0 and grayscale 1 is not limited in the embodiments of the present invention, and can be determined at least according to the actual display requirements of the display panel. For example, when the display requirements of the display panel are higher, more transition grayscales can be inserted between grayscale 0 and grayscale 1; for example, when the display requirements of the display panel are general, fewer transition grayscales can be inserted between grayscale 0 and grayscale 1.

[0052] That is to say, the more transition gray levels are inserted, the smaller the unit step value of the regional brightness compensation will be, that is, the difference in the driving voltage corresponding to two adjacent transition gray levels will be smaller, and the difference in the display brightness corresponding to two adjacent transition gray levels will also be smaller, so more precise brightness compensation can be performed to meet the high display requirements of the display panel; obviously, this will also increase the calculation and storage capacity of the DDIC in the display panel.

[0053] On the contrary, the fewer the number of inserted transition gray levels, the larger the unit step value of the regional brightness compensation will be, that is, the greater the difference in driving voltage corresponding to two adjacent transition gray levels will be, and the greater the difference in display brightness corresponding to two adjacent transition gray levels will also be. Obviously, the fineness of the brightness compensation will be relatively general; obviously, this will also reduce the calculation and storage amount of DDIC in the display panel.

[0054] Therefore, the number of transition gray levels inserted between gray level 0 and gray level 1 is not limited in the embodiment of the present invention, and can be determined at least according to the actual display requirements of the display panel.

[0055] Optionally, in another embodiment of the present invention, refer to Figure 6 , Figure 6 A schematic flow chart of another method for adjusting brightness of a display panel provided by an embodiment of the present invention.

[0056] In step S102, the grayscale data is processed to insert a plurality of transition grayscales at least between grayscale 0 and grayscale 1 to form target grayscale data. A specific implementation includes:

[0057] S1021: Processing the grayscale data, inserting a plurality of transition grayscales between two adjacent grayscales, and forming target grayscale data.

[0058] Specifically, in an embodiment of the present invention, the grayscale data includes grayscale 0 to grayscale 255. After the grayscale data is processed, in addition to inserting a transition grayscale between grayscale 0 and grayscale 1 in the above embodiment, multiple transition grayscales are also inserted between any other two adjacent grayscales to achieve the expansion of the entire grayscale data, thereby improving the brightness compensation fineness of the display panel at any grayscale.

[0059] For example, when the display panel is lit with a set grayscale K, the actual brightness of some pixels in the display panel is less than the target brightness of the grayscale K. At this time, it is necessary to drive these pixels with a driving voltage corresponding to a higher grayscale to display, so that the actual brightness of these pixels is the same as the target brightness of the grayscale K; however, when these pixels are driven with a driving voltage corresponding to the grayscale K+1 to display, the actual brightness of these pixels may be greater than the target brightness of the grayscale K. Wherein, K is greater than or equal to 0, and K is less than 254, and K is a positive integer.

[0060] That is to say, when the display panel is lit with a set K grayscale, the actual brightness of some pixels in the display panel is less than the target brightness of the K grayscale; when the display panel is lit with K+1 grayscale after compensation, the actual brightness of these pixels in the display panel is greater than the target brightness of the K grayscale; since no transition grayscale is inserted between the K grayscale and the K+1 grayscale in the prior art, accurate brightness compensation cannot be performed at this time.

[0061] In the embodiment of the present invention, multiple transition grayscales are inserted between two adjacent grayscales, that is, multiple transition grayscales are inserted between the K grayscale and the K+1 grayscale. When the display panel is lit with the set K grayscale, the actual brightness of some pixels in the display panel is less than the target brightness of the K grayscale, and when the display panel is lit with the K+1 grayscale, the actual brightness of these pixels in the display panel is greater than the target brightness of the K grayscale. Obviously, during the brightness compensation process, when the display panel is lit with a certain transition grayscale among the multiple transition grayscales inserted between the K grayscale and the K+1 grayscale, the actual brightness of these pixels can be made the same as the target brightness of the K grayscale, thereby realizing brightness compensation of the display panel and solving the Mura phenomenon of the display panel.

[0062] That is to say, in the embodiment of the present invention, the grayscale data is processed, and multiple transition grayscales are inserted between two adjacent grayscales to form target grayscale data, which can better compensate the brightness of the entire grayscale picture and avoid over-compensation.

[0063] Optionally, in another embodiment of the present invention, refer to Figure 7 , Figure 7 A schematic diagram of another grayscale data after data processing provided by an embodiment of the present invention.

[0064] The number of multiple transition gray levels inserted between any two adjacent gray levels is equal, such as Figure 7 As shown, Y transition gray levels are inserted between two adjacent gray levels.

[0065] Specifically, in an embodiment of the present invention, the grayscale data includes grayscale 0 to grayscale 255. After the grayscale data is processed, multiple transition grayscales are inserted between any two adjacent grayscales, and the number of multiple transition grayscales inserted between any two adjacent grayscales is equal, so as to achieve the expansion of the entire grayscale data, thereby improving the brightness compensation fineness of the display panel at any grayscale, ensuring that the display panel can perform effective brightness compensation under any grayscale display, so as to improve the display effect of the display panel as a whole.

[0066] Optionally, in another embodiment of the present invention, refer to Figure 8 , Figure 8 A schematic diagram of another grayscale data after data processing provided by an embodiment of the present invention.

[0067] N transition gray levels are inserted between the gray level 0 and the gray level 1.

[0068] M transition gray levels are inserted between any other two adjacent gray levels.

[0069] Wherein, N>M, and N and M are both positive integers.

[0070] Specifically, in the embodiment of the present invention, since grayscale 0 is a dark state, in order to avoid the phenomenon that the grayscale of some parts that should have brightness is directly converted to grayscale 0 due to over-compensation when the display panel displays low grayscale, the number of transition grayscales inserted between grayscale 0 and grayscale 1 is increased to provide sufficient compensation space below grayscale 1, ultimately achieving effective low grayscale compensation and improving the display effect of the display panel.

[0071] It should be noted that, in the above embodiments, the number of transition gray scales inserted between any other two adjacent gray scales is the same, and the insertion of M transition gray scales is taken as an example for explanation; optionally, the number of transition gray scales inserted between any other two adjacent gray scales may also be different, for example, the number of transition gray scales inserted between gray scale 1 and gray scale 2 may be greater than the number of transition gray scales inserted between gray scale 2 and gray scale 3, and may also be less than the number of transition gray scales inserted between gray scale 2 and gray scale 3; optionally, some two adjacent gray scales may not have transition gray scales inserted.

[0072] That is to say, in the embodiments of the present invention, the number of transition gray scales to be inserted between adjacent gray scales can be determined based on the display characteristics of different display panels. The ultimate goal is to ensure that the display panel can perform effective brightness compensation under any gray scale display, so as to improve the display effect of the display panel as a whole. On the basis of achieving this goal, the calculation amount and storage amount of DDIC in the display panel can also be reduced, thereby reducing some unnecessary power consumption in the display panel.

[0073] Optionally, in another embodiment of the present invention, performing data processing on the grayscale data includes:

[0074] The data length of the grayscale data is converted from a first data length to a second data length, wherein the second data length is greater than the first data length.

[0075] Specifically, in the embodiment of the present invention, the first data length is 8 bits to 10 bits, and the second data length is 12 bits to 16 bits. Fig. 9 , Fig. 9 A schematic diagram of performing data processing on the grayscale data is provided in an embodiment of the present invention, and is described by taking the first data length being 8 bits and the second data length being 12 bits as an example.

[0076] Optionally, in another embodiment of the present invention, refer to Fig.10 , Fig.10 A schematic flow chart of another method for adjusting brightness of a display panel provided in an embodiment of the present invention.

[0077] In step S103, one implementation form of adjusting the brightness of the sub-pixel based on the target grayscale data is:

[0078] S1031: driving the sub-pixel to display with a dark-state voltage at a center point of the display panel, wherein the dark-state voltage at the center point is less than a voltage corresponding to grayscale 0 in the target grayscale data.

[0079] S1032: Obtain the actual brightness of the sub-pixel.

[0080] S1033: Based on the actual brightness and the required target brightness, adjust the brightness of the sub-pixel according to the target grayscale data.

[0081] Specifically, in an embodiment of the present invention, the sub-pixel is driven for display with a dark state voltage at the center point of the display panel, and then the actual brightness of the sub-pixel in the display panel is obtained. When the actual brightness is greater than the required target brightness, the sub-pixel is driven for display with a driving voltage corresponding to a lower grayscale based on the target grayscale data. When the actual brightness is less than the required target brightness, the sub-pixel is driven for display with a driving voltage corresponding to a higher grayscale based on the target grayscale data, thereby achieving effective brightness compensation for the display panel under any grayscale display, so as to improve the display effect of the display panel as a whole.

[0082] refer to Fig.11 , Fig.11 A schematic diagram of a display effect before and after low grayscale compensation based on the technical solution of the present application is provided in an embodiment of the present invention, such as Fig.11 As shown, compared with the display effect before demura, the display effect of the display panel is greatly improved after demura.

[0083] Optionally, based on the same inventive concept, another embodiment of the present invention further provides a brightness adjustment device for a display panel, which is used to implement the brightness adjustment method for a display panel in some of the aforementioned embodiments, referring to Fig.12 , Fig.12 A schematic diagram of the principle structure of a brightness adjustment device for a display panel provided by an embodiment of the present invention.

[0084] The display panel includes a plurality of sub-pixels, and the brightness adjustment device of the display panel includes:

[0085] The acquisition module 11 is used to acquire grayscale data received by the display panel.

[0086] The data processing module 12 is used to process the grayscale data, insert a plurality of transition grayscales at least between grayscale 0 and grayscale 1, and form target grayscale data.

[0087] The brightness adjustment module 13 is used to adjust the brightness of the sub-pixel based on the target grayscale data.

[0088] Specifically, in an embodiment of the present invention, data processing is performed based on the received grayscale data, and at least multiple transition grayscales are inserted between 0 grayscale and 1 grayscale to form target grayscale data, so as to provide sufficient compensation space below 1 grayscale. Then, when the brightness of the display panel is adjusted, brightness compensation can be comprehensively realized based on the original grayscale data and the inserted multiple transition grayscale data, that is, the function of brightness compensation from 1 grayscale downward is realized, so that the display panel can effectively perform low grayscale compensation.

[0089] Optionally, in another embodiment of the present invention, the data processing module 12 is specifically used for:

[0090] The grayscale data is processed, and a plurality of transition grayscales are inserted between two adjacent grayscales to form target grayscale data.

[0091] Optionally, in another embodiment of the present invention, the number of the multiple transition gray levels inserted between any two adjacent gray levels is equal.

[0092] Optionally, in another embodiment of the present invention, N transition grayscales are inserted between the grayscale 0 and the grayscale 1.

[0093] M transition gray levels are inserted between any other two adjacent gray levels.

[0094] Wherein, N>M, and N and M are both positive integers.

[0095] Optionally, in another embodiment of the present invention, the data processing module 12 performs data processing on the grayscale data in a specific implementation manner as follows:

[0096] The data length of the grayscale data is converted from a first data length to a second data length, wherein the second data length is greater than the first data length.

[0097] Optionally, in another embodiment of the present invention, the first data length is 8 bits to 10 bits, and the second data length is 12 bits to 16 bits.

[0098] Optionally, in another embodiment of the present invention, the brightness adjustment module 13 is specifically used for:

[0099] The sub-pixel is driven to display with a dark-state voltage at the center point of the display panel, and the dark-state voltage at the center point is less than a voltage corresponding to a 0 grayscale in the target grayscale data.

[0100] Get the actual brightness of the sub-pixel.

[0101] Based on the actual brightness and the required target brightness, the brightness of the sub-pixel is adjusted according to the target grayscale data.

[0102] Optionally, in another embodiment of the present invention, the voltage corresponding to 0 grayscale in the grayscale data is equal to the voltage corresponding to 0 grayscale in the target grayscale data.

[0103] It should be noted that the principle of the brightness adjustment device for a display panel provided in the embodiment of the present invention is the same as the principle of the brightness adjustment method for a display panel provided in the above embodiment of the present invention, and will not be described in detail herein.

[0104] Optionally, based on the above embodiment of the present invention, another embodiment of the present invention further provides a display device, referring to Fig.13 , Fig.13 This is a schematic diagram of a display device provided in an embodiment of the present invention. The display device 111 includes the brightness adjustment device described in the above embodiment.

[0105] Specifically, in the embodiment of the present invention, since the display device 111 provided in the embodiment of the present invention includes any one of the brightness adjustment devices provided in the above embodiments, the display device 111 has the same or corresponding technical effects as the brightness adjustment devices provided in the above embodiments.

[0106] The display device 111 may specifically be a mobile phone, a computer, or other electronic devices.

[0107] Optionally, in another embodiment of the present invention, the display device 111 includes: a computer-readable storage medium, in which computer-executable instructions are stored, and the computer-executable instructions are used to execute the brightness adjustment method provided in the above embodiment.

[0108] Optionally, in another embodiment of the present invention, refer to Fig.14 , Fig.14 A schematic diagram of the hardware architecture of a display device provided in an embodiment of the present invention, the display device 111 includes: at least one processor 21, and at least one memory 22 and a bus 23 connected to the processor 21.

[0109] The processor 21 and the memory 22 communicate with each other via the bus 23 .

[0110] The processor 21 is used to call the program instructions in the memory 22 to execute the brightness adjustment method provided by the above embodiment.

[0111] The brightness adjustment method and device of a display panel and a display device provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for general technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0112] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0113] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device that includes a series of elements is inherent to the elements, or also includes elements inherent to these processes, methods, articles or devices. In the absence of further restrictions, the elements defined by the sentence "including a..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0114] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for adjusting the brightness of a display panel, characterized in that: The display panel includes a plurality of sub-pixels, and the brightness adjustment method includes: Obtaining grayscale data received by the display panel; Processing the grayscale data, inserting a plurality of transition grayscales at least between grayscale 0 and grayscale 1, to form target grayscale data; Adjusting the brightness of the sub-pixel based on the target grayscale data; Wherein, the voltage corresponding to 0 grayscale in the grayscale data is equal to the voltage corresponding to 0 grayscale in the target grayscale data; The step of adjusting the brightness of the sub-pixel based on the target grayscale data includes: The sub-pixel is driven to display with a dark-state voltage at a center point of the display panel, wherein the dark-state voltage at the center point is less than a voltage corresponding to a grayscale of 0 in the target grayscale data; Obtaining the actual brightness of the sub-pixel; Based on the actual brightness and the required target brightness, the brightness of the sub-pixel is adjusted according to the target grayscale data.

2. The brightness adjustment method according to claim 1, characterized in that: Processing the grayscale data to insert at least a plurality of transition grayscales between grayscale 0 and grayscale 1 to form target grayscale data includes: The grayscale data is processed, and a plurality of transition grayscales are inserted between two adjacent grayscales to form target grayscale data.

3. The brightness adjustment method according to claim 2, characterized in that: The number of the multiple transition gray levels inserted between any two adjacent gray levels is equal.

4. The brightness adjustment method according to claim 2, characterized in that: N transition gray levels are inserted between the gray level 0 and the gray level 1; Insert M transition gray levels between any other two adjacent gray levels; Wherein, N>M, and N and M are both positive integers.

5. The brightness adjustment method according to claim 1, characterized in that: The grayscale data is processed, including: The data length of the grayscale data is converted from a first data length to a second data length, wherein the second data length is greater than the first data length.

6. The brightness adjustment method according to claim 5, characterized in that: The first data length is 8 bits to 10 bits, and the second data length is 12 bits to 16 bits.

7. A brightness adjustment device for a display panel, characterized in that: The display panel includes a plurality of sub-pixels, and the brightness adjustment device includes: An acquisition module, used for acquiring grayscale data received by the display panel; A data processing module, used for processing the grayscale data, inserting a plurality of transition grayscales at least between grayscale 0 and grayscale 1, to form target grayscale data; A brightness adjustment module, used for adjusting the brightness of the sub-pixel based on the target grayscale data; Wherein, the voltage corresponding to 0 grayscale in the grayscale data is equal to the voltage corresponding to 0 grayscale in the target grayscale data; The brightness adjustment module is specifically used for: The sub-pixel is driven to display with a dark-state voltage at a center point of the display panel, wherein the dark-state voltage at the center point is less than a voltage corresponding to a grayscale of 0 in the target grayscale data; Obtaining the actual brightness of the sub-pixel; Based on the actual brightness and the required target brightness, the brightness of the sub-pixel is adjusted according to the target grayscale data.

8. The brightness adjustment device according to claim 7, characterized in that: The data processing module is specifically used for: The grayscale data is processed, and a plurality of transition grayscales are inserted between two adjacent grayscales to form target grayscale data.

9. The brightness adjustment device according to claim 8, characterized in that: The number of the multiple transition gray levels inserted between any two adjacent gray levels is equal.

10. The brightness adjustment device according to claim 8, characterized in that: N transition gray levels are inserted between the gray level 0 and the gray level 1; Insert M transition gray levels between any other two adjacent gray levels; Wherein, N>M, and N and M are both positive integers.

11. The brightness adjustment device according to claim 7, characterized in that: The specific implementation method of the data processing module performing data processing on the grayscale data is: The data length of the grayscale data is converted from a first data length to a second data length, wherein the second data length is greater than the first data length.

12. The brightness adjustment device according to claim 11, characterized in that: The first data length is 8 bits to 10 bits, and the second data length is 12 bits to 16 bits.

13. A display device, characterized in that: The display device comprises the brightness adjustment device according to any one of claims 7-12.

14. The display device according to claim 13, characterized in that: The display device comprises: a computer-readable storage medium, wherein the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute the brightness adjustment method according to any one of claims 1 to 6.

15. The display device according to claim 13, characterized in that: The display device includes: at least one processor, and at least one memory and a bus connected to the processor; Wherein, the processor and the memory communicate with each other through the bus; The processor is used to call the program instructions in the memory to execute the brightness adjustment method according to any one of claims 1-6.

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