Brightness adjustment method and brightness adjustment device, display device

Abstract

The application discloses a brightness adjusting method, a brightness adjusting device and a display device. The brightness adjusting method is used for brightness adjustment of a display panel and comprises the following steps: receiving a brightness adjusting instruction; determining whether the brightness adjusting instruction is a brightness increasing instruction or a brightness decreasing instruction; if the brightness adjusting instruction is the brightness increasing instruction, switching a display mode of the display panel from a first brightness mode to a second brightness mode according to the brightness adjusting instruction and based on a brightness curve of a reflected brightness value and a display brightness in the display panel; the brightness curve of the reflected brightness value and the display brightness comprises a first interval corresponding to the first brightness mode and a second interval corresponding to the second brightness mode, and a minimum brightness value corresponding to a display brightness binding point in the second interval is greater than a maximum brightness value corresponding to a display brightness binding point in the first interval.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a brightness adjustment method, a brightness adjustment device, and a display device. Background Technology

[0002] Currently, organic light-emitting diode (OLED) display panels have the characteristics of self-illumination, wide viewing angle, high contrast, fast response speed, low power consumption, and ultra-thinness, and are widely used in the industry.

[0003] In related technologies, the brightness adjustment process of OLED display panels can be achieved in various ways, such as dimming via pulse width modulation signals or dimming via voltage sources. However, for display panels with a low Open Pixel Ratio (OPR), i.e., display panels where the proportion of pixels corresponding to the image to be displayed is low, it is difficult to achieve a high brightness level. For example, ... Figure 1 As shown, with 5% OPR, the brightness of the display panel may only reach 1400 nits. If the client requires higher brightness, it is difficult to meet the client's needs due to the characteristics of the display panel and the brightness design of the display module. Summary of the Invention

[0004] This application provides a brightness adjustment method, a brightness adjustment device, and a display device to improve the technical problem that the brightness of a low OPR display panel is difficult to increase significantly.

[0005] A first aspect of this application provides a brightness adjustment method for adjusting the brightness of a display panel, comprising the steps of:

[0006] Receives brightness adjustment commands;

[0007] Determine whether the brightness adjustment command is a brightness increase command;

[0008] If the brightness adjustment command is a brightness increase command, then according to the brightness adjustment command, based on the brightness curve reflecting the brightness value and the displayed brightness in the display panel, the display mode of the display panel is switched from the first brightness mode to the second brightness mode.

[0009] The brightness curve includes a first interval corresponding to the first brightness mode and a second interval corresponding to the second brightness mode, wherein the minimum brightness value corresponding to the display brightness binding point in the second interval is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval.

[0010] In some embodiments, after switching the display mode of the display panel from the first brightness mode to the second brightness mode, the method further comprises:

[0011] turning off the resistance voltage drop compensation function of the display panel.

[0012] In some embodiments, the display panel for brightness adjustment is a display panel with a pixel display ratio of 5%-20% corresponding to the image to be displayed.

[0013] In some embodiments, the difference between the display brightness bind point corresponding to the second interval and the display brightness bind point corresponding to the first interval ranges from 200 to 300.

[0014] In some embodiments, the display brightness bind point corresponding to the second interval is 4095.

[0015] In some embodiments, according to the brightness adjustment instruction, the display mode of the display panel is switched from the first brightness mode to the second brightness mode based on the brightness curve of the reflected brightness value and the display brightness in the display panel.

[0016] According to the brightness adjustment instruction, the first brightness value in the first brightness mode and the second brightness value in the second brightness mode are obtained based on the brightness curve of the reflected brightness value and the display brightness.

[0017] The brightness value of the display panel is switched from the first brightness value to the second brightness value.

[0018] In some embodiments, the brightness value of the display panel is switched from the first brightness value to the second brightness value, comprising:

[0019] Based on the brightness change curve in the display panel, the brightness switching time of the display panel is determined;

[0020] In the brightness switching time, the brightness value of the display panel is switched from the first brightness to the second brightness;

[0021] Wherein, the brightness change curve is a curve reflecting the difference of display brightness between the first brightness mode and the second brightness mode, and the brightness switching time between the first brightness mode and the second brightness mode.

[0022] In some embodiments, the range of the brightness value corresponding to the first brightness mode is 1200nits-1500nits, and the range of the brightness value corresponding to the second brightness mode is 1500nits-2000nits.

[0023] In some embodiments, the brightness curve further comprises a third interval corresponding to a third brightness mode, and a display brightness binding point in the third interval corresponds to a maximum brightness value less than a minimum brightness value corresponding to a display brightness binding point in the first interval.

[0024] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0025] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0026] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0027] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0028] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0029] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0030] In some embodiments, if the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and the display brightness in the display panel; or

[0031] In some embodiments, the brightness curve comprises a first interval corresponding to the first brightness mode and a second interval corresponding to the second brightness mode, and a display brightness binding point in the second interval corresponds to a minimum brightness value greater than a maximum brightness value corresponding to a display brightness binding point in the first interval.

[0032] In some embodiments, the function control unit is further configured to turn off the resistance voltage drop compensation function of the display panel after the display mode of the display panel is switched from the first brightness mode to the second brightness mode.

[0033] In a third aspect, the present application provides a display device, comprising a display panel and the brightness adjustment device connected to the display panel.

[0034] The brightness adjustment method provided by the present application adds a second interval corresponding to the second brightness mode in the brightness curve, and the minimum brightness value corresponding to the display brightness binding point in the second interval is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval. The added second brightness mode can further improve the brightness value of the display panel through switching between the first brightness mode and the second brightness mode, thereby solving the technical problem that the brightness of the low OPR display panel is difficult to be greatly improved, and meeting the high brightness demand of the client in some special conditions. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 A structure diagram of a display panel with 5% OPR in the related technology provided by the present application;

[0036] Figure 2 A structure diagram of a display panel with 100% OPR in the related technology provided by the present application;

[0037] Figure 3 A diagram of a brightness curve in the related technology provided by the present application;

[0038] Figure 4 A flowchart of the brightness adjustment method provided by the present application;

[0039] Figure 5 A diagram of a brightness curve provided by the present application;

[0040] Figure 6 A diagram of a brightness change curve provided by the present application. DETAILED DESCRIPTION

[0041] In order to better understand the technical solutions provided by the embodiments of the present application, the technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the embodiments can be combined with each other.

[0042] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element. The terms "two or more" and "two or more than two" include both the recited number of units and also greater than the recited number of units.

[0043] In the related art, the range of displaying an image on the display panel is different due to different pixel display ratios (OPRs) corresponding to the image to be displayed, wherein when the pixel display ratio corresponding to the image to be displayed is low, as shown in Figure 1 , the image to be displayed is displayed only in a smaller display area of the display panel, and when the pixel display ratio corresponding to the image to be displayed is high, as shown in Figure 2 , the image to be displayed is displayed in the entire display area of the display panel.

[0044] At present, for the display panel with a low pixel display ratio corresponding to the image to be displayed, it is difficult to reach a high level of brightness, and the brightness of the display panel with an OPR of 5% can only reach 1400 nits to 1600 nits. Table 1 is a binding point design table of the brightness curve in the related art, and the corresponding brightness curve is as shown in Figure 3 . As can be seen from Table 1 or Figure 3 , when it is necessary to adjust the brightness value of the display panel, the adjustment of the brightness value of the display panel can be realized by switching between different modes, for example, by switching from the normal brightness mode 1 to the high brightness mode, the brightness value of the display panel can be switched from 800 to 1400, that is, the display panel becomes brighter, or by switching from the high brightness mode to the normal brightness mode 1, the brightness value of the display panel can be switched from 1400 to 800, that is, the display panel becomes dimmer.

[0045] Table 1

[0046] Mode Display brightness bind point Brightness value Highlight mode 4095 1400 Constant brightness mode 1 3672 800 Constant brightness mode 2 3308 500 Constant brightness mode 3 2899 300 Constant brightness mode 4 2461 180 Constant brightness mode 5 1696 80 Constant brightness mode 6 1341 50 Constant brightness mode 7 948 25 Constant brightness mode 8 600 10 Constant brightness mode 9 268 2

[0047] However, if the client needs higher brightness, even if the display mode of the display panel is switched from the normal brightness mode to the high brightness mode, only 1400 nits can be reached, which is difficult to meet the needs of the client.

[0048] In view of this, as Figure 4As shown, the first aspect of the embodiment of the present application provides a brightness adjustment method for brightness adjustment of a display panel, which comprises the following steps:

[0049] S10, receiving a brightness adjustment instruction;

[0050] S20, determining whether the brightness adjustment instruction is a brightness increase instruction;

[0051] S30, if the brightness adjustment instruction is a brightness increase instruction, switching the display mode of the display panel from a first brightness mode to a second brightness mode according to the brightness adjustment instruction and based on a brightness curve in the display panel reflecting a brightness value and a display brightness.

[0052] The brightness curve comprises a first interval I corresponding to the first brightness mode and a second interval II corresponding to the second brightness mode, and the minimum brightness value corresponding to the display brightness binding point in the second interval II is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval I.

[0053] In this embodiment, the brightness curve is a pre-set curve. Specifically, as shown in the following table, the table is a binding point design table of a brightness curve shown in this embodiment, and the corresponding brightness curve is as shown in Figure 5 As can be seen from Table 2 or Figure 5 When it is necessary to adjust the brightness value of the display panel, the brightness value of the display panel can be adjusted by switching between different modes. For example, when it is necessary to adjust the brightness value of the display panel in the direction of increasing, the brightness value of the display panel can be switched from 1000 to 1400 by switching from the constant brightness mode 1 to the first brightness mode, or the brightness value of the display panel can be switched from 1400 to 1600 by switching from the first brightness mode to the second brightness mode.

[0054] Table 2

[0055] Mode Display brightness bind point Brightness value Second brightness mode 4095 1600 First brightness mode 3827 1400 Constant brightness mode 1 3574 1000 Constant brightness mode 2 3041 500 Constant brightness mode 3 2631 300 Constant brightness mode 4 2193 180 Constant brightness mode 5 1428 80 Constant brightness mode 6 1073 50 Constant brightness mode 7 680 25 Constant brightness mode 8 332 10 Constant brightness mode 9 1 2

[0056] Therefore, in this embodiment, by adding the second interval II corresponding to the second brightness mode in the brightness curve, and the minimum brightness value corresponding to the display brightness binding point in the second interval II is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval I, compared with the existing mode of only setting the first brightness mode, the brightness value of the display panel can be further improved by switching between the first brightness mode and the second brightness mode, thereby solving the technical problem that the brightness of the low OPR display panel is difficult to be greatly improved, to meet the high brightness demand of the client in some special conditions.

[0057] Further, in some embodiments, after switching the display mode of the display panel from the first brightness mode to the second brightness mode, further comprising:

[0058] Turning off the resistance voltage drop compensation function of the display panel.

[0059] It can be understood that the driving of the display panel is mainly completed by a display driving integrated circuit (DDIC) and a power management integrated circuit (PMIC). The DDIC provides digital and analog signals, is responsible for driving thin film transistors in the display panel, and writes in data voltage (Source Data). The PMIC provides direct current power signals ELVDD (positive) and ELVSS (negative), which are responsible for driving the light-emitting material in the display substrate to emit light. Due to the different distances between each position of the display panel and the DDIC, the voltage is attenuated, and the brightness at different positions of the display panel is also different. In order to improve the brightness uniformity of the display panel, resistance voltage drop compensation is needed for the display panel, that is, taking the actual ELVDD voltage of a standard area as the target voltage, and taking the difference between the actual ELVDD voltage of each to-be-compensated area and the target voltage as the voltage compensation amount of the ELVDD signal of each to-be-compensated area.

[0060] In the present embodiment, considering that the effect of improving the brightness value of the display panel after adding the second brightness mode is still limited by the brightness value of the set second brightness mode, that is, as shown in the above table, when the brightness value corresponding to the second brightness mode is 1600 nits, the highest brightness of the display panel cannot exceed 1600 nits, and if the brightness value required by the client for the display panel is higher than 1600 nits, the demand of the client cannot be met.

[0061] Further, in the present embodiment, the display panel is a display panel with a low pixel display ratio corresponding to the to-be-displayed image. Since the display area of the display panel is small, the resistance voltage drop existing in the display area is small. By turning off the resistance voltage drop compensation (IRC) function of the display panel, the brightness value of the display panel can be further improved to a certain extent.

[0062] In some embodiments, the display panel for brightness adjustment is a display panel with a pixel display ratio of 5%-20% corresponding to the to-be-displayed image.

[0063] In the embodiment, according to the foregoing description, when the pixel display ratio corresponding to the image to be displayed of the display panel is low, the luminance value of the display area of the display panel can be effectively improved by turning off the resistance voltage drop compensation function of the display panel. Therefore, in the embodiment, the display panel for luminance adjustment is the display panel whose pixel display ratio corresponding to the image to be displayed is 5%-20%.

[0064] In some embodiments, the difference between the display luminance bind point corresponding to the second interval II and the display luminance bind point corresponding to the first interval I is in the range of 200-300.

[0065] In the embodiment, as shown in the table, Figure 5 the display luminance bind point of the first interval I corresponding to the first luminance mode is 3827, the display luminance bind point of the second interval II corresponding to the second luminance mode is 4095, and the difference between the display luminance bind point of the first interval I and the display luminance bind point of the second interval II is 268. Understandably, if the difference between the display luminance bind point corresponding to the second interval II and the display luminance bind point corresponding to the first interval I is too small, the difference between the maximum luminance value corresponding to the second interval II and the maximum luminance value corresponding to the first interval I is also small. In the luminance adjustment process of the display panel, when the display panel is switched from the first luminance mode to the second luminance mode, the luminance value of the display panel is not obviously improved. If the difference between the display luminance bind point corresponding to the second interval II and the display luminance bind point corresponding to the first interval I is too large, the difference between the maximum luminance value corresponding to the second interval II and the maximum luminance value corresponding to the first interval I is also large. In the luminance adjustment process of the display panel, when the display panel is switched from the first luminance mode to the second luminance mode, the luminance value of the display panel is obviously improved in a short time, which causes new display problems and leads to poor experience of the client.

[0066] Therefore, in the embodiment, the difference between the display luminance bind point corresponding to the second interval II and the display luminance bind point corresponding to the first interval I is in the range of 200-300. In the luminance adjustment process of the display panel, when the display panel is switched from the first luminance mode to the second luminance mode, the luminance value of the display panel is smoothly transitioned in a short time, which is beneficial to improve the experience of the client.

[0067] In some embodiments, the display luminance bind point corresponding to the second interval II is 4095.

[0068] In the embodiment, the display luminance bind point corresponding to the second interval II is 4095, and the display luminance bind point corresponding to the first interval I is not specifically limited, as long as the difference between the display luminance bind point corresponding to the second interval II and the display luminance bind point corresponding to the first interval I is in the range of 200-300.

[0069] It should be noted that the display brightness binding point in each interval can be one or more, and no further detailed description is given here. The display brightness binding point can be set according to the actual situation.

[0070] In some embodiments, step S30 switches the display mode of the display panel from the first brightness mode to the second brightness mode according to the brightness adjustment instruction and based on the brightness curve reflecting the brightness value and the display brightness in the display panel, and includes:

[0071] S31, according to the brightness adjustment instruction, based on the brightness curve reflecting the brightness value and the display brightness, obtaining the first brightness value in the first brightness mode and the second brightness value in the second brightness mode;

[0072] S32, switching the brightness value of the display panel from the first brightness value to the second brightness value.

[0073] In this embodiment, the process of switching the display mode of the display panel from the first brightness mode to the second brightness mode first obtains the first brightness value in the first brightness mode and the second brightness value in the second brightness mode based on the brightness curve according to the brightness adjustment instruction, and then switches the brightness value of the display panel from the first brightness value to the second brightness value. Since the second brightness value of the second brightness mode is greater than the first brightness value of the first brightness mode, after the brightness value of the display panel is switched from the first brightness value to the second brightness value, the brightness of the display panel is improved.

[0074] Further, in some embodiments, step S32 switches the brightness value of the display panel from the first brightness value to the second brightness value, including:

[0075] S321, determining the brightness switching time of the display panel based on the brightness change curve in the display panel;

[0076] S322, switching the brightness value of the display panel from the first brightness to the second brightness within the brightness switching time;

[0077] The brightness change curve is a curve reflecting the difference between the display brightness of the first brightness mode and the second brightness mode, and the brightness switching time between the first brightness mode and the second brightness mode.

[0078] It should be noted that the brightness switching time of the display panel in this embodiment is the switching time required for the display panel to switch from the first brightness mode to the second brightness mode, or the switching time for the display panel to switch from the first display brightness to the second display brightness.

[0079] In the embodiment, because the display panel has a brightness switching time, under the premise that the difference between the first display brightness and the second display brightness is certain, the length of the brightness switching time will affect the display effect of the display panel. For example, when the brightness switching time is too short, the difference in brightness is easily captured by the human eye, thereby affecting the display effect of the display panel. When the brightness switching time is too long, that is, the transition period from the first display brightness to the second display brightness is too long, the display effect of the display panel is also affected, thereby reducing the use comfort of the client.

[0080] Specifically, in the embodiment, the content shown in FIG. 6 is taken as an example. In order to avoid the human eye from feeling the brightness change of the display panel, when the display panel is switched from the first display mode to the second display mode, the display brightness is increased by 16 every time a frame is added. After 17 frames of pictures, the display brightness of the display panel is changed from 3827 to 4095, and the display brightness value of the display panel is switched from 1400 nits to 1600 nits. Figure 6

[0081] In the embodiment, the brightness change curve can be set according to actual conditions, that is, the increase value of the display brightness every time a frame is added can be 16, or 17, 18, 19, or 20, etc. After a plurality of frames of pictures, the display brightness of the display panel can be changed from the display brightness corresponding to the first brightness mode to the display brightness corresponding to the second brightness mode.

[0082] Specifically, in some embodiments, the range of the brightness value corresponding to the first brightness mode is 1200 nits-1500 nits, and the range of the brightness value corresponding to the second brightness mode is 1500 nits-2000 nits.

[0083] For example, the brightness value corresponding to the first brightness mode is 1300 nits, and the brightness value corresponding to the second brightness mode is 1600 nits, or the brightness value corresponding to the first brightness mode is 1400 nits, and the brightness value corresponding to the second brightness mode is 1700 nits, or the brightness value corresponding to the first brightness mode is 1500 nits, and the brightness value corresponding to the second brightness mode is 1800 nits, etc.

[0084] ​It should be noted that in the embodiment, if the time from the first brightness mode to the second brightness mode is fixed during the brightness adjustment of the display panel, the greater the difference between the brightness value corresponding to the first brightness mode and the brightness value corresponding to the second brightness mode, the easier the process of switching the display panel from the first brightness mode to the second brightness mode is captured by the human eye, thereby affecting the experience of the client. Therefore, when setting the brightness value corresponding to the first brightness mode and the brightness value corresponding to the second brightness mode, the experience of the client also needs to be considered to avoid negative impact on the display effect of the display panel.

[0085] In some embodiments, the brightness curve further includes a third interval III corresponding to a third brightness mode, and the maximum brightness value corresponding to the display brightness binding point in the third interval III is less than the minimum brightness value corresponding to the display brightness binding point in the first interval I.

[0086] In the embodiment, as shown in Table 2, the third brightness mode includes a plurality of constant brightness modes, that is, the third interval III further includes a plurality of sub-intervals, wherein the maximum brightness value corresponding to the display brightness binding point in the third interval III is less than the minimum brightness value corresponding to the display brightness binding point in the first interval I. Understandably, since the third brightness mode includes a plurality of brightness modes, taking the third brightness mode including 9 constant brightness modes in Table 2 as an example, the maximum brightness value corresponding to the display brightness binding point in the sub-interval corresponding to the constant brightness mode 1 is less than the minimum brightness value corresponding to the display brightness binding point in the first interval I. The maximum brightness value corresponding to the display brightness binding point in the sub-interval corresponding to the constant brightness mode 2 is less than the minimum brightness value corresponding to the display brightness binding point in the sub-interval corresponding to the constant brightness mode 1. The maximum brightness value corresponding to the display brightness binding point in the sub-interval corresponding to the constant brightness mode 3 is less than the minimum brightness value corresponding to the display brightness binding point in the sub-interval corresponding to the constant brightness mode 2. And so on. Among the plurality of constant brightness modes included in the third brightness mode, the brightness value corresponding to the display brightness binding point in the sub-interval corresponding to the constant brightness mode 9 is the minimum.

[0087] Specifically, in some embodiments, if the brightness adjustment instruction is a brightness reduction instruction, according to the brightness adjustment instruction, based on the brightness curve reflecting the brightness value and the display brightness in the display panel, the display mode of the display panel is switched from the second brightness mode to the first brightness mode; or according to the brightness adjustment instruction, based on the brightness curve reflecting the brightness value and the display brightness in the display panel, the display mode of the display panel is switched from the first brightness mode to the third brightness mode; or according to the brightness adjustment instruction, based on the brightness curve reflecting the brightness value and the display brightness in the display panel, the display mode of the display panel is switched from the second brightness mode to the third brightness mode.

[0088] In a second aspect, the present application provides a brightness adjustment device for adjusting the brightness of a display panel, the brightness adjustment device comprising:

[0089] an instruction receiving unit configured to receive an instruction for brightness adjustment;

[0090] an instruction judging unit configured to judge whether the instruction for brightness adjustment is an instruction for increasing brightness;

[0091] a brightness adjustment unit configured to, when the instruction for brightness adjustment is the instruction for increasing brightness, switch the display mode of the display panel from a first brightness mode to a second brightness mode according to the instruction for brightness adjustment and based on a brightness curve in the display panel reflecting the brightness value and the display brightness.

[0092] The brightness curve comprises a first interval corresponding to the first brightness mode and a second interval corresponding to the second brightness mode, and the minimum brightness value corresponding to the display brightness binding point in the second interval is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval.

[0093] In the present embodiment, by adding the second interval corresponding to the second brightness mode in the brightness curve, and the minimum brightness value corresponding to the display brightness binding point in the second interval is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval, compared with the existing mode of only setting the first brightness mode, the brightness value of the display panel can be further improved through the switching between the first brightness mode and the second brightness mode.

[0094] Further, in some embodiments, the brightness adjustment device further comprises a function control unit, wherein the function control unit is configured to, after the display mode of the display panel is switched from the first brightness mode to the second brightness mode, turn off the resistance voltage drop compensation function of the display panel.

[0095] In the present embodiment, by turning off the resistance voltage drop compensation function of the display panel through the function control unit after the display mode of the display panel is switched from the first brightness mode to the second brightness mode, the brightness value of the display panel is further improved to a certain extent.

[0096] In a third aspect, the present application provides a display device comprising a display panel and a brightness adjustment device as described in the second aspect connected to the display panel.

[0097] It should be noted that the display device provided by the present application can be any product or component with display function, such as electronic paper, electronic watch, mobile phone, tablet computer, television, display, notebook computer, wearable electronic device, digital photo frame, navigator, etc., which is not limited in the present application.

[0098] In summary, the embodiment of the present application provides a second interval corresponding to the second brightness mode by adding in the brightness curve, and the minimum brightness value corresponding to the display brightness binding point in the second interval is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval. Compared with the existing method of only setting the first brightness mode, the brightness value of the display panel can be further improved by switching between the first brightness mode and the second brightness mode, thereby solving the technical problem that the brightness of the low OPR display panel is difficult to be greatly improved, so as to meet the high brightness demand of the client in some special conditions.

[0099] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

[0100] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0101] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A brightness adjustment method for brightness adjustment of a display panel, characterized by, The method comprises the steps of: receiving a brightness adjustment instruction; determining whether the brightness adjustment instruction is a brightness increase instruction; if the brightness adjustment instruction is a brightness increase instruction, switching the display mode of the display panel from a first brightness mode to a second brightness mode according to the brightness adjustment instruction based on a brightness curve reflecting the brightness value and display brightness in the display panel; wherein the brightness curve comprises a first interval corresponding to the first brightness mode and a second interval corresponding to the second brightness mode, and the minimum brightness value corresponding to the display brightness binding point in the second interval is greater than the maximum brightness value corresponding to the display brightness binding point in the first interval; the brightness curve further comprises a third interval corresponding to a third brightness mode, and the maximum brightness value corresponding to the display brightness binding point in the third interval is less than the minimum brightness value corresponding to the display brightness binding point in the first interval.

2. The luminance adjusting method according to claim 1, wherein After switching the display mode of the display panel from the first brightness mode to the second brightness mode, the method further comprises: turning off the resistance voltage drop compensation function of the display panel.

3. The luminance adjusting method according to claim 1, wherein The display panel for brightness adjustment is a display panel with a pixel display ratio of 5%-20% corresponding to the image to be displayed.

4. The luminance adjusting method according to claim 1, wherein The difference between the display brightness binding point corresponding to the second interval and the display brightness binding point corresponding to the first interval is in the range of 200-300.

5. The luminance adjustment method according to claim 4, wherein The display brightness binding point corresponding to the second interval is 4095.

6. The luminance adjusting method according to claim 4, wherein According to the brightness adjustment instruction, the display mode of the display panel is switched from the first brightness mode to the second brightness mode based on the brightness curve reflecting the brightness value and display brightness in the display panel, which comprises: According to the brightness adjustment instruction, the first brightness value under the first brightness mode and the second brightness value under the second brightness mode are obtained based on the brightness curve reflecting the brightness value and display brightness. Switching the brightness value of the display panel from the first brightness value to the second brightness value.

7. The luminance adjustment method according to claim 6, wherein Switching the brightness value of the display panel from the first brightness value to the second brightness value comprises: determining the brightness switching time of the display panel based on the brightness change curve in the display panel; switching the brightness value of the display panel from the first brightness to the second brightness within the brightness switching time. The brightness change curve reflects the difference in display brightness between the first brightness mode and the second brightness mode, as well as the brightness switching time between the first brightness mode and the second brightness mode.

8. The luminance adjusting method according to claim 1, wherein The range of brightness value corresponding to the first brightness mode is 1200nits-1500nits, and the range of brightness value corresponding to the second brightness mode is 1500nits-2000nits.

9. The luminance adjusting method according to claim 1, wherein If the brightness adjustment instruction is a brightness decrease instruction, the display mode of the display panel is switched from the second brightness mode to the first brightness mode according to the brightness adjustment instruction based on the brightness curve reflecting the brightness value and display brightness in the display panel. or According to the brightness adjustment instruction, the display mode of the display panel is switched from the first brightness mode to the third brightness mode based on a brightness curve reflecting the brightness value and the display brightness in the display panel. Or According to the brightness adjustment instruction, the display mode of the display panel is switched from the second brightness mode to the third brightness mode based on a brightness curve reflecting the brightness value and the display brightness in the display panel.

10. A luminance adjusting apparatus for luminance adjustment of a display panel, characterized by comprising: The brightness adjustment device comprises: An instruction receiving unit configured to receive a brightness adjustment instruction; An instruction judging unit configured to judge whether the brightness adjustment instruction is a brightness increase instruction or a brightness decrease instruction; A brightness adjustment unit configured to, when the brightness adjustment instruction is the brightness increase instruction, switch the display mode of the display panel from the first brightness mode to the second brightness mode according to the brightness adjustment instruction based on a brightness curve reflecting the brightness value and the display brightness in the display panel. The brightness curve comprises a first interval corresponding to the first brightness mode and a second interval corresponding to the second brightness mode, and the minimum brightness value corresponding to the display brightness bind point in the second interval is greater than the maximum brightness value corresponding to the display brightness bind point in the first interval. The brightness curve further comprises a third interval corresponding to a third brightness mode, and the maximum brightness value corresponding to the display brightness bind point in the third interval is less than the minimum brightness value corresponding to the display brightness bind point in the first interval.

11. The luminance adjusting apparatus according to claim 10, wherein The brightness adjustment device further comprises a function control unit configured to, after the display mode of the display panel is switched from the first brightness mode to the second brightness mode, turn off the resistance voltage drop compensation function of the display panel.

12. A display device, characterized by comprising: The display panel, and the brightness adjustment device according to any one of claims 10-11 connected to the display panel.

Images