Brightness compensation circuit and control method thereof, display panel and display device

Abstract

The present application discloses a brightness compensation circuit and its control method, a display panel, and a display device, relating to the field of panel technology. The circuit includes: an acquisition module for acquiring a light intensity digital signal of the current ambient light; a processing module electrically connected to the acquisition module, the processing module for determining the actual light intensity brightness of the current ambient light based on the light intensity digital signal sent by the acquisition module, and outputting a binary number based on the brightness compensation gear corresponding to the actual light intensity brightness, the binary number including at least one unit bit; a driving module electrically connected to the processing module, the driving module including voltage pins paired with each unit bit, the driving module for receiving the binary number output by the processing module, and adjusting the voltage value of the paired voltage pin according to the level signal of each unit bit before outputting it. The present application enhances the user's visual experience by improving the intelligence of the brightness adjustment of the display device.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a brightness compensation circuit and a control method thereof, a display panel, and a display device. Background Art

[0002] With the rapid development of technology, display devices such as TVs (televisions), monitors (monitors), and notebooks (notebooks) are widely used. However, these display devices currently on the market suffer from a common problem: their brightness remains constant regardless of changes in ambient light intensity. This means that the display devices are unable to adaptively adjust their screen brightness based on changes in ambient light intensity, severely impacting the user's visual experience.

[0003] In summary, how to improve the intelligence of brightness adjustment of display devices to enhance the user's visual experience is a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The main purpose of this application is to provide a brightness compensation circuit and its control method, a display panel and a display device, aiming to improve the intelligence of brightness adjustment of the display device.

[0005] To achieve the above objectives, the present application provides a brightness compensation circuit, which includes:

[0006] An acquisition module is used to collect the light intensity digital signal of the current ambient light;

[0007] a processing module electrically connected to the acquisition module, the processing module being configured to determine the actual light intensity brightness of the current ambient light based on the light intensity digital signal sent by the acquisition module, and output a binary number based on the brightness compensation gear corresponding to the actual light intensity brightness, the binary number including at least one unit bit;

[0008] A driving module, the driving module is electrically connected to the processing module, the driving module includes a voltage pin paired with each of the unit bits, the driving module is used to receive the binary number output by the processing module, and adjust the voltage value of the paired voltage pin according to the level signal of each unit bit before outputting it.

[0009] In one embodiment, the acquisition module includes: a light sensing unit and an analog-to-digital unit;

[0010] The light sensing unit is electrically connected to the processing module through the analog-to-digital unit;

[0011] The light sensing unit is used to collect the light intensity electrical signal of the current ambient light and send the light intensity electrical signal to the analog-to-digital unit;

[0012] The analog-to-digital unit is used to access the light intensity electrical signal of the light sensing unit, and convert the light intensity electrical signal into a light intensity digital signal and output it to the processing module.

[0013] In one embodiment, the light sensing unit is further electrically connected to the processing module;

[0014] The processing module is used to access the light intensity electrical signal sent by the light sensing unit, generate a target PWM waveform based on the voltage average of the light intensity electrical signal, and transmit the target PWM waveform to the driving module so that the driving module can adjust the voltage value of each voltage pin according to the duty cycle of the target PWM waveform and then output it.

[0015] In one embodiment, the light sensing unit includes a plurality of photosensors, and the photosensors are evenly arranged in a non-display area at preset intervals. The non-display area is arranged near a display edge of a display area in a display screen.

[0016] In addition, to achieve the above-mentioned object, the present application further provides a control method for a brightness compensation circuit, which is applied to any of the above-mentioned brightness compensation circuits, and the control method for the brightness compensation circuit includes:

[0017] Collect the light intensity digital signal of the current ambient light through the acquisition module;

[0018] After the processing module receives the light intensity digital signal sent by the acquisition module, the actual light intensity brightness of the current ambient light is determined according to the light intensity digital signal, and the processing module is controlled to output a binary number according to the brightness compensation gear corresponding to the actual light intensity brightness, where the binary number includes at least one unit bit;

[0019] After the driving module receives the binary number output by the processing module, the driving module is controlled to adjust the voltage value of the paired voltage pin according to the level signal of each unit bit and then output it.

[0020] In one embodiment, there are multiple light intensity digital signals, and the step of determining the actual light intensity brightness of the current ambient light according to the light intensity digital signals includes:

[0021] Sorting the light intensity digital signals in ascending order of signal value to obtain a sorted light intensity signal sequence, and determining a target digital signal of the light intensity signal sequence, wherein the target digital signal includes the light intensity digital signal with the largest signal value and the light intensity digital signal with the smallest signal value;

[0022] Detecting whether the number of signals of the target digital signal exceeds a preset average number threshold;

[0023] If yes, determining the repetition frequency of the signal values ​​of each of the light intensity digital signals in the light intensity signal sequence, and taking the signal value with the largest repetition frequency as the actual light intensity brightness of the current ambient light;

[0024] If not, the target digital signal in the light intensity signal sequence is deleted to obtain a deleted light intensity signal sequence, and the deleted light intensity signal sequence is averaged to obtain an average light intensity value, and the average light intensity value is used as the actual light intensity brightness of the current ambient light.

[0025] In one embodiment, the step of controlling the processing module to output a binary number according to the brightness compensation gear corresponding to the actual light intensity brightness includes:

[0026] Determining a plurality of preset brightness adjustment intervals and a maximum value of each of the brightness adjustment intervals, and sorting the brightness adjustment intervals in ascending order of the maximum value of the interval to obtain a plurality of sorted brightness adjustment intervals;

[0027] Traversing the sorted brightness adjustment intervals in sequence according to the actual light intensity brightness, and taking the brightness adjustment interval to which the traversed actual light intensity brightness belongs as the target brightness adjustment interval;

[0028] After determining the brightness compensation level corresponding to the target brightness adjustment interval, the processing module outputs a binary number mapped to the brightness compensation level.

[0029] In one embodiment, the control method of the brightness compensation circuit further includes:

[0030] The processing module receives the light intensity electrical signal sent by the light sensing unit, generates a target PWM waveform based on the voltage average of the light intensity electrical signal, and transmits the target PWM waveform to the driving module so that the driving module can adjust the voltage value of each voltage pin according to the duty cycle of the target PWM waveform and then output it.

[0031] In addition, to achieve the above-mentioned purpose, the present application also provides a display panel, which includes a color filter substrate, a liquid crystal layer and an array substrate, the liquid crystal layer is arranged between the array substrate and the color filter substrate, and the array substrate includes the brightness compensation circuit described in any one of the above items.

[0032] In addition, to achieve the above-mentioned purpose, the present application also provides a display device, which includes the above-mentioned display panel, a memory, a processor, and a control program for the brightness compensation circuit stored on the memory and runnable on the processor, and when the processor executes the control program for the brightness compensation circuit, the steps of the control method of the brightness compensation circuit as described in any one of the above items are implemented.

[0033] The present application provides a brightness compensation circuit and its control method, a display panel and a display device, wherein an acquisition module provided in the brightness compensation circuit acquires a light intensity digital signal of the current ambient light in real time, so that the display device using the brightness compensation circuit can accurately perceive the intensity changes of the external light, thereby providing accurate and reliable data support for subsequent brightness compensation processing; then, according to the electrical connection between the processing module and the acquisition module, the processing module can accurately obtain the actual light intensity brightness of the current ambient light based on the acquired light intensity digital signal, and then can quickly and accurately determine the brightness compensation gear corresponding to the actual light intensity brightness, and output a corresponding binary number based on the brightness compensation gear, so that the brightness compensation gear can be used to compensate the brightness of the current ambient light. This binary number effectively avoids the error risk that may occur during the brightness compensation process, thereby improving the stability and reliability of the brightness compensation processing; in addition, the driving module provided in the present application includes a voltage pin paired with each unit bit in the binary number. Then, based on the electrical connection between the driving module and the processing module, after receiving the binary number output by the processing module, the driving module adaptively adjusts the voltage value of the voltage pin paired with each unit bit according to the level signal of each unit bit in the binary number to control the display brightness of the display device, thereby effectively improving the intelligence of the brightness adjustment of the display device, ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly enhance the user's visual experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0035] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 This is a structural block diagram of the first embodiment of the brightness compensation circuit of the present application;

[0037] Figure 2 This is a circuit diagram related to an embodiment of the brightness compensation circuit of the present application;

[0038] Figure 3 This is another circuit diagram related to an embodiment of the brightness compensation circuit of the present application;

[0039] Figure 4 This is a schematic diagram of the layout of the light sensing unit involved in an embodiment of the brightness compensation circuit of the present application;

[0040] Figure 5 This is a flow chart of a second embodiment of a control method for a brightness compensation circuit of the present application;

[0041] Figure 6 This is a schematic diagram of the structure of the display device involved in the embodiment of the present application.

[0042] Description of Figure Numbers:

[0043] 10. Acquisition module; 20. Processing module; 30. Drive module; Voltage pin P1; 101. Light sensing unit; 102. Analog-to-digital unit; Q1. Photoelectric sensor; T1. Display screen.

[0044] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0048] Exemplary embodiments are described in detail herein, with examples illustrated in the accompanying drawings. When the following description refers to the drawings, identical numerals in different drawings represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with this application.

[0049] In the current display technology field, display devices such as TVs (televisions), monitors (monitors), and notebooks (notebooks) still have certain limitations when it comes to brightness adjustment. Specifically, when users use these display devices, the display brightness of the device generally remains constant regardless of the intensity of the external light. This fixed brightness setting method can sometimes lead to a poor user experience.

[0050] On the one hand, when the brightness of external light is too strong, if the display device the user is viewing has a fixed brightness that is insufficient to adapt to changes in ambient light, the image may appear relatively blurry. This is because strong external light interferes with the user's visual perception of the displayed content, resulting in a loss of image detail and a poor viewing experience. On the other hand, when external light is very low, if the brightness of the display device is still maintained at a high level, the user may experience glare. Prolonged exposure to such high-brightness environments can not only cause eye fatigue but also potentially damage vision, seriously affecting the user's visual experience.

[0051] Therefore, how to automatically adjust the brightness of the display device according to the intensity of the external light to provide a more comfortable and clear viewing experience has become a technical problem that needs to be urgently solved in the current display technology field.

[0052] To address the above-mentioned defects, the present application provides a brightness compensation circuit and a control method thereof, a display panel, and a display device.

[0053] The embodiment of the present application provides a brightness compensation circuit, referring to Figure 1 As shown, Figure 1 This is a block diagram of the structure of the first embodiment of the brightness compensation circuit of the present application. The brightness compensation circuit includes:

[0054] The acquisition module 10 is used to acquire the light intensity digital signal of the current ambient light.

[0055] In this embodiment, the acquisition module 10 first obtains the light intensity of the current ambient light, then photoelectrically converts the light intensity into a light intensity electrical signal, and performs analog-to-digital conversion on the light intensity electrical signal to obtain a light intensity digital signal of the current ambient light, thereby being able to reflect the intensity changes of the current ambient light in real time, so as to provide accurate and reliable data support for subsequent brightness compensation processing.

[0056] The processing module 20 is electrically connected to the acquisition module 10. The processing module 20 is used to determine the actual light intensity brightness of the current ambient light based on the light intensity digital signal sent by the acquisition module 10, and output a binary number based on the brightness compensation gear corresponding to the actual light intensity brightness, wherein the binary number includes at least one unit bit.

[0057] In this embodiment, due to the electrical connection between processing module 20 and acquisition module 10, acquisition module 10 can quickly and accurately upload the collected light intensity digital signal to processing module 20, ensuring that processing module 20 can obtain real-time information about changes in the current ambient light. After receiving the light intensity digital signal, processing module 20 performs arithmetic processing on the light intensity digital signal to obtain the corresponding light intensity average or light intensity mode value. The light intensity average or light intensity mode value is then used as the actual light intensity brightness of the current ambient light. This provides a reliable reference standard for accurately assessing changes in the current ambient light. Next, the processing module 20 searches for a brightness adjustment interval corresponding to the actual light intensity brightness from a plurality of preset brightness adjustment intervals, and uses the brightness adjustment interval corresponding to the actual light intensity brightness found as the target brightness adjustment interval, thereby providing a key basis for determining the subsequent brightness compensation gear. Then, the processing module 20 can quickly and accurately search for the brightness compensation gear mapped to the target brightness adjustment interval from the preset interval gear mapping table, and generate a corresponding binary number based on the found brightness compensation gear, effectively avoiding the error risk that may occur in the brightness compensation process, and ensuring the accuracy of the adaptive brightness adjustment of the display device.

[0058] It should be noted that the preset brightness adjustment interval can be understood as being set based on the working performance of the display device, the user's usage habits, and the range of changes in ambient light, and each brightness interval corresponds to a brightness compensation gear. The preset number of brightness adjustment intervals can be customized according to application requirements. For example, the preset number of brightness adjustment intervals is 2 x , where x is the self-heating number greater than 0, and the above preset number is 2 x This is a feasible implementation method and the present application does not impose any limitation here.

[0059] The number of binary digits is equal to the preset number 2 x For example, when the preset number of brightness adjustment intervals is 2 1 When (that is, when the number of brightness compensation gears is 2), the binary number includes only one unit bit, and one of the two brightness compensation gears corresponds to "0" (low level) output by the unit bit, and the other of the two brightness compensation gears corresponds to "1" (high level) output by the unit bit.

[0060] The driving module 30 is electrically connected to the processing module 20. The driving module 30 includes a voltage pin P1 paired with each unit bit. The driving module 30 is used to receive the binary number output by the processing module 20 and adjust the voltage value of the paired voltage pin P1 according to the level signal of each unit bit before outputting it.

[0061] In this embodiment, based on the electrical connection between the driving module 30 and the processing module 20, the driving module 30 can quickly and accurately receive the binary number output by the processing module 20, thereby providing necessary data support for the subsequent voltage adjustment of the brightness display. Then, based on the level signal of each unit bit in the binary number, the voltage value of the voltage pin P1 paired with each unit bit is adaptively adjusted, and the display brightness of the display device is controlled based on the adjusted voltage value, thereby realizing adaptive adjustment to changes in ambient light, effectively improving the intelligence of the brightness adjustment of the display device, and ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly enhance the user's visual experience.

[0062] It should be noted that the number of voltage pins P1 set in the driving module 30 of this application is equal to the number of unit bits. The above setting method of the number of pins is only a feasible implementation method of this application, and this application does not impose any limitation here.

[0063] In summary, the present application provides a brightness compensation circuit and its control method, a display panel and a display device, wherein the acquisition module 10 provided in the brightness compensation circuit acquires the light intensity digital signal of the current ambient light in real time, so that the display device using the brightness compensation circuit can accurately perceive the intensity changes of the external light, thereby providing accurate and reliable data support for the subsequent brightness compensation processing; then, according to the electrical connection between the processing module 20 and the acquisition module 10, the processing module 20 can accurately obtain the actual light intensity brightness of the current ambient light based on the acquired light intensity digital signal, and then can quickly and accurately determine the brightness compensation gear corresponding to the actual light intensity brightness, and output the corresponding binary number according to the brightness compensation gear, so that the brightness compensation gear can be used to compensate for the actual light intensity brightness. Binary numbers effectively avoid the error risks that may occur during the brightness compensation process, thereby improving the stability and reliability of the brightness compensation processing; in addition, the driving module 30 set in the present application includes a voltage pin P1 paired with each unit bit in the binary number. Then, based on the electrical connection between the driving module 30 and the processing module 20, after receiving the binary number output by the processing module 20, the driving module 30 adaptively adjusts the voltage value of the voltage pin P1 paired with each unit bit according to the level signal of each unit bit in the binary number to control the display brightness of the display device, thereby effectively improving the intelligence of the brightness adjustment of the display device, ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly improve the user's visual experience.

[0064] Further, in some feasible embodiments, referring to Figure 2 , Figure 2 This is a circuit diagram of an embodiment of the brightness compensation circuit of the present application. The acquisition module 10 includes: a light sensing unit 101 and an analog-to-digital unit 102;

[0065] The light sensing unit 101 is electrically connected to the processing module 20 via the analog-to-digital unit 102;

[0066] The light sensing unit 101 is used to collect the light intensity electrical signal of the current ambient light and send the light intensity electrical signal to the analog-to-digital unit 102;

[0067] The analog-to-digital unit 102 is used to receive the light intensity electrical signal of the light sensing unit 101 and convert the light intensity electrical signal into a light intensity digital signal to output to the processing module 20 .

[0068] In this embodiment, referring to Figure 2 The light sensing unit 101 provided in this application can collect data in real time. Figure 2The current ambient light is represented by multiple parallel oblique arrows, and then the light intensity of the current ambient light is converted into an electrical signal through the light sensing unit 101 to obtain a light intensity electrical signal; next, according to the electrical connection between the light sensing unit 101 and the analog-to-digital unit 102, the analog-to-digital unit 102 can promptly receive the light intensity electrical signal sent by the light sensing module, and perform analog-to-digital conversion on the light intensity electrical signal to obtain a light intensity digital signal, thereby effectively improving the efficiency and accuracy of signal processing, so that the display device using the brightness compensation circuit can respond to the light changes of the current ambient light more quickly, ensuring that the display device can present the best display effect under different ambient light conditions, so as to provide users with a more comfortable visual experience.

[0069] It should be noted that the analog-to-digital unit 102 can be understood as an A / D converter. Figure 2 The processing module 20 shown can be understood as a TCON module, and the TCON module can be understood as a logic board, a screen driving board or a central control board.

[0070] Figure 2 The driver module 30 shown can be understood as a gamma chip, which is represented by a "Gamma IC." Furthermore, the gamma chip has multiple signal output pins, each of which corresponds to a signal pin number. In one feasible embodiment, signal output pins with the same number of pins as the number of unit bits are selected from the multiple signal output pins in ascending order of signal pin numbers to serve as the voltage pins P1 paired with each unit bit in this application.

[0071] Further, in some feasible embodiments, referring to Figure 3 , Figure 3 This is another circuit diagram related to an embodiment of the brightness compensation circuit of the present application. The light sensing unit 101 is also electrically connected to the processing module 20;

[0072] The processing module 20 is used to access the light intensity electrical signal sent by the light sensing unit 101, generate a target PWM waveform based on the voltage average of the light intensity electrical signal, and transmit the target PWM waveform to the driving module 30, so that the driving module 30 can adjust the voltage value of each voltage pin P1 according to the duty cycle of the target PWM waveform and then output it.

[0073] In this embodiment, each photoelectric sensor Q1 provided by the light sensing unit 101 collects the light intensity of the current ambient light, and each photoelectric sensor Q1 converts the collected light intensity into an electrical signal to obtain a light intensity electrical signal output by each photoelectric sensor Q1. Then, based on the electrical connection between the processing module 20 and the light sensing unit 101 (i.e., based on the electrical connection between each photoelectric sensor Q1 and the processing module 20), the processing module 20 can promptly receive the light intensity electrical signal uploaded by each photoelectric sensor Q1, and then perform arithmetic averaging on the voltage values ​​of each light intensity electrical signal, and based on the obtained voltage average, accurately generate a target PWM waveform corresponding to the voltage average; next, based on the electrical connection between the driving module 30 and the processing module 20, after receiving the target PWM waveform uploaded by the processing module 20, the driving module 30 adjusts the voltage value of each voltage pin P1 according to the duty cycle of the target PWM waveform and then outputs it, thereby realizing the display brightness control of the display device under the current ambient light, effectively improving the intelligence of the brightness adjustment of the display device, and ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly improve the user's visual experience.

[0074] It should be noted that Figures 1 to 4 The “P1-1, P1-2, P1-3 and P1-N” shown can be understood as, when there are multiple voltage pins P1, the first voltage pin is represented by P1-1, the second voltage pin is represented by P1-2, the third voltage pin is represented by P1-3, and the Nth voltage pin is represented by P1-N.

[0075] Further, in some feasible embodiments, referring to Figure 4 , Figure 4 1 is a schematic diagram of the layout of a light sensing unit 101 according to an embodiment of the brightness compensation circuit of the present application. The light sensing unit 101 includes a plurality of photosensors Q1, which are evenly arranged in a non-display area at predetermined intervals. The non-display area is arranged near the display edge of the display area of ​​the display screen T1.

[0076] In this embodiment, referring to Figure 4 In this application, multiple photoelectric sensors Q1 are evenly arranged at preset intervals. Figure 4 In the non-display area represented by the oblique line area, specifically, the present application may Figure 1 The photoelectric sensors Q1-1 to Q1-10 are evenly arranged at preset intervals. Figure 4The non-display area represented by the diagonal area shown is used to ensure that each photoelectric sensor Q1 can collect the light intensity of the current ambient light at different positions and directions, thereby effectively improving the accuracy and reliability of light intensity collection. The non-display area is then set near the display edge of the display area in the display screen T1, which not only avoids blocking the display content, but also ensures that each photoelectric sensor Q1 can fully collect the light intensity of the current ambient light.

[0077] It should be noted that the photoelectric sensor Q1 includes but is not limited to an embedded light sensor. The above-mentioned embedded light sensor is only a feasible implementation method of the present application, and the present application does not impose any limitation thereto.

[0078] In summary, the present application evenly arranges multiple photoelectric sensors Q1 at preset intervals in the non-display area of ​​the display screen T1, and each photoelectric sensor Q1 collects the light intensity of the current ambient light in different positions and directions, and converts the light intensity into a light intensity electrical signal and outputs it to the analog-to-digital unit 102. The analog-to-digital unit 102 converts the light intensity electrical signal into a light intensity digital signal and outputs it to the processing module 20, so that the processing module 20 calculates the corresponding brightness compensation binary number or target PWM waveform based on the light intensity electrical signal and outputs it to the driving module 30. At this time, the driving module 30 adjusts the voltage value of the voltage pin P1 based on the binary number or the target PWM waveform and then outputs it, thereby realizing the output voltage control of the driving module 30 to compensate for the display brightness of the display device under different ambient lights, thereby effectively improving the intelligence of the brightness adjustment of the display device, and ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly improve the user's visual experience.

[0079] Furthermore, based on the first embodiment of the brightness compensation circuit of the present application, a second embodiment of the control method of the brightness compensation circuit of the present application is proposed, referring to Figure 5 , Figure 5 This is a flow chart of a second embodiment of a control method for a brightness compensation circuit of the present application.

[0080] The control method of the brightness compensation circuit of the present application is applied to any of the above-mentioned brightness compensation circuits. The control method of the brightness compensation circuit of the present application is performed by a display device that controls and adjusts display brightness. The control method of the brightness compensation circuit of the present application includes the following implementation steps:

[0081] Step S10: collecting the light intensity digital signal of the current ambient light through the collection module 10.

[0082] In this embodiment, the acquisition module 10 first obtains the light intensity of the current ambient light, then photoelectrically converts the light intensity into a light intensity electrical signal, and performs analog-to-digital conversion on the light intensity electrical signal to obtain a light intensity digital signal of the current ambient light, thereby being able to reflect the intensity changes of the current ambient light in real time, so as to provide accurate and reliable data support for subsequent brightness compensation processing.

[0083] Step S20: After the processing module 20 receives the light intensity digital signal sent by the acquisition module 10, the actual light intensity brightness of the current ambient light is determined based on the light intensity digital signal, and the processing module 20 is controlled to output a binary number based on the brightness compensation gear corresponding to the actual light intensity brightness, and the binary number includes at least one unit bit.

[0084] In this embodiment, due to the electrical connection between processing module 20 and acquisition module 10, acquisition module 10 can quickly and accurately upload the collected light intensity digital signal to processing module 20, ensuring that processing module 20 can obtain real-time information about changes in the current ambient light. After receiving the light intensity digital signal, processing module 20 performs arithmetic processing on the light intensity digital signal to obtain the corresponding light intensity average or light intensity mode value. The light intensity average or light intensity mode value is then used as the actual light intensity brightness of the current ambient light. This provides a reliable reference standard for accurately assessing changes in the current ambient light. Next, the processing module 20 searches for a brightness adjustment interval corresponding to the actual light intensity brightness from a plurality of preset brightness adjustment intervals, and uses the brightness adjustment interval corresponding to the actual light intensity brightness found as the target brightness adjustment interval, thereby providing a key basis for determining the subsequent brightness compensation gear. Then, the processing module 20 can quickly and accurately search for the brightness compensation gear mapped to the target brightness adjustment interval from the preset interval gear mapping table, and generate a corresponding binary number based on the found brightness compensation gear, effectively avoiding the error risk that may occur in the brightness compensation process, and ensuring the accuracy of the adaptive brightness adjustment of the display device.

[0085] It should be noted that the preset brightness adjustment interval can be understood as being set based on the working performance of the display device, the user's usage habits, and the range of changes in ambient light, and each brightness interval corresponds to a brightness compensation gear. The preset number of brightness adjustment intervals can be customized according to application requirements. For example, the preset number of brightness adjustment intervals is 2 x , where x is the self-heating number greater than 0, and the above preset number is 2 x This is a feasible implementation method and the present application does not impose any limitation here.

[0086] The number of binary digits is equal to the preset number 2 xFor example, when the preset number of brightness adjustment intervals is 2 1 When (that is, when the number of brightness compensation gears is 2), the binary number includes only one unit bit, and one of the two brightness compensation gears corresponds to "0" (low level) output by the unit bit, and the other of the two brightness compensation gears corresponds to "1" (high level) output by the unit bit.

[0087] Step S30 : After the driving module 30 receives the binary number output by the processing module 20 , the driving module 30 is controlled to adjust the voltage value of the paired voltage pin P1 according to the level signal of each unit bit and then output it.

[0088] In this embodiment, based on the electrical connection between the driving module 30 and the processing module 20, the driving module 30 can quickly and accurately receive the binary number output by the processing module 20, thereby providing necessary data support for the subsequent voltage adjustment of the brightness display. Then, based on the level signal of each unit bit in the binary number, the voltage value of the voltage pin P1 paired with each unit bit is adaptively adjusted, and the display brightness of the display device is controlled based on the adjusted voltage value, thereby realizing adaptive adjustment to changes in ambient light, effectively improving the intelligence of the brightness adjustment of the display device, and ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly enhance the user's visual experience.

[0089] It should be noted that the number of voltage pins P1 set in the driving module 30 of this application is equal to the number of unit bits. The above setting method of the number of pins is only a feasible implementation method of this application, and this application does not impose any limitation here.

[0090] In a specific embodiment, when the preset number of brightness adjustment intervals is 2 2When (that is, when the number of brightness compensation gears is 4), the binary number only includes two unit bits, that is, the output binary number can be 00, 01, 10 or 11; wherein, the present application uses the first unit bit of the two unit bits as the first unit bit and the second unit bit of the two unit bits as the second unit bit in the order from left to right of the binary number. After the driving module 30 receives the binary number output by the processing module 20, it determines the voltage pin P1 paired with each unit bit according to the voltage serial number of each unit bit. Specifically, when the voltage serial number of the first unit bit is the pin number of the output voltage VCOM, the voltage pin P1 with the same pin number as the output voltage VCOM in the driving module 30 is used as the first voltage pin to be adjusted; when the voltage serial number of the second unit bit is the pin number of the output voltage Gamma, the voltage pin P1 with the same pin number as the output voltage Gamma in the driving module 30 is used as the second voltage pin to be adjusted. For example, if the binary number is 00, after the first voltage pin to be adjusted and the second voltage pin to be adjusted are both pulled down to a low level position (i.e., the ground terminal), the current voltage value output by the first voltage pin to be adjusted (i.e., the first voltage value) and the current voltage value output by the second voltage pin to be adjusted (i.e., the second voltage value) are obtained respectively. Then, the display brightness of the display device is controlled under the joint action of the first voltage value and the second voltage value, thereby effectively improving the intelligence of the brightness adjustment of the display device and ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly enhance the user's visual experience.

[0091] In addition, it should be noted that when the binary number is 01, the first voltage pin to be adjusted is pulled down to a low level position, and the second voltage pin to be adjusted is connected to a high level position (i.e., the power supply end); when the binary number is 10, the first voltage pin to be adjusted is connected to a high level position, and the second voltage pin to be adjusted is pulled down to a low level position; when the binary number is 11, both the first voltage pin to be adjusted and the second voltage pin to be adjusted are connected to a high level position.

[0092] VCOM, also known as the vertical common voltage, is a crucial parameter in liquid crystal display technology. It determines the reference voltage for liquid crystal pixels, ensuring accurate and stable image display. Setting and adjusting VCOM is crucial for preventing flicker on LCD screens and ensuring image quality.

[0093] Voltage gamma is a parameter used to adjust the display's brightness, contrast, and hue. Adjusting the voltage value of voltage gamma can improve the visual quality of images, making them appear more realistic and natural. Adjusting voltage gamma is crucial for ensuring consistent image quality under varying lighting conditions.

[0094] Furthermore, in some feasible embodiments, there are multiple light intensity digital signals, and the above step S20: determining the actual light intensity brightness of the current ambient light according to the light intensity digital signals may further include the following implementation steps:

[0095] Step S201: Sort the light intensity digital signals in ascending order of signal value to obtain a sorted light intensity signal sequence, and determine the target digital signal of the light intensity signal sequence, wherein the target digital signal includes the light intensity digital signal with the largest signal value and the light intensity digital signal with the smallest signal value.

[0096] In this embodiment, the light intensity digital signals are sorted in order from small to large signal values, and the sorted light intensity signal sequence can be obtained quickly and accurately, which effectively improves the efficiency of signal processing. Then, the target digital signal can be quickly found from the sorted light intensity signal sequence, where the target digital signal includes the light intensity digital signal with the largest signal value and the light intensity digital signal with the smallest signal value.

[0097] Step S202: detecting whether the number of the target digital signal exceeds a preset average number threshold;

[0098] Step S203: If yes, determine the repetition frequency of the signal values ​​of each light intensity digital signal in the light intensity signal sequence, and use the signal value with the highest repetition frequency as the actual light intensity brightness of the current ambient light;

[0099] Step S204: If not, the target digital signal in the light intensity signal sequence is deleted to obtain a deleted light intensity signal sequence, and the deleted light intensity signal sequence is averaged to obtain an average light intensity value, and the average light intensity value is used as the actual light intensity brightness of the current ambient light.

[0100] In this embodiment, it is detected whether the number of target digital signals exceeds a preset average number threshold; if so, the repetition frequency of the signal values ​​of each light intensity digital signal in the light intensity signal sequence is determined, and the signal value with the highest repetition frequency is used as the actual light intensity brightness of the current ambient light; if not, the target digital signal in the light intensity signal sequence is deleted. For example, a light intensity digital signal with the largest signal value and a light intensity digital signal with the smallest signal value in the light intensity signal sequence can be deleted to obtain a deleted light intensity signal sequence to eliminate possible influences of extreme values. Then, the deleted light intensity signal sequence is averaged to obtain a relatively stable and reliable light intensity average value, and the light intensity average value is used as the actual light intensity brightness of the current ambient light, thereby ensuring the reliability and accuracy of the actual light intensity brightness.

[0101] It should be noted that the number of target digital signals can be understood as the total number of signals between the light intensity digital signal with the largest signal value and the light intensity digital signal with the smallest signal value; the preset average number can be defined according to application requirements, and this application does not impose any restrictions here.

[0102] Furthermore, in some other feasible embodiments, the above step S20: controlling the processing module 20 to output a binary number according to the brightness compensation gear corresponding to the actual light intensity brightness may further include the following implementation steps:

[0103] Step A10: determining a plurality of preset brightness adjustment intervals and a maximum value of each brightness adjustment interval, and sorting the brightness adjustment intervals in ascending order of the maximum value of the interval to obtain a plurality of sorted brightness adjustment intervals.

[0104] In this embodiment, after determining the interval maximum value specified by each preset brightness adjustment interval, the brightness adjustment intervals are sorted in ascending order according to the interval maximum value, and multiple sorted brightness adjustment intervals can be accurately obtained. Since the sorted brightness adjustment intervals are arranged in sequence from the lowest brightness level to the highest brightness level, an ordered sequence can be formed, thereby effectively improving the efficiency of subsequent traversal processing.

[0105] Step A20: traversing the sorted brightness adjustment intervals in sequence according to the actual light intensity brightness, and taking the brightness adjustment interval to which the traversed actual light intensity brightness belongs as the target brightness adjustment interval;

[0106] Step A30: After determining the brightness compensation level corresponding to the target brightness adjustment interval, the processing module 20 outputs a binary number mapped to the brightness compensation level.

[0107] In this embodiment, in this embodiment, each sorted brightness adjustment interval is traversed in sequence according to the actual light intensity brightness, that is, the traversal is started from the lowest brightness interval represented by the brightness adjustment interval with the smallest interval maximum value according to the actual light intensity brightness, and the actual light intensity brightness is compared with each brightness adjustment interval until the brightness adjustment interval to which the actual light intensity brightness belongs is obtained through the traversal, and the brightness adjustment interval to which the actual light intensity brightness belongs is used as the target brightness adjustment interval, thereby providing strong support for the subsequent determination of the brightness compensation gear, and can quickly find the brightness compensation gear specified by the most suitable display brightness under the current ambient light, and then output the binary number of the brightness compensation gear mapping through the processing module 20, so that the error risk that may occur in the brightness compensation process can be effectively avoided through the binary number, thereby improving the stability and reliability of the brightness compensation processing.

[0108] In a specific embodiment, it is assumed that the present application is provided with a brightness adjustment interval 1-1: [0, L1), a brightness adjustment interval 1-2: [L1, L2), a brightness adjustment interval 1-3: [L2, L3), and a brightness adjustment interval 1-4: [L3, L4]. The actual light intensity brightness Lx is compared with the brightness adjustment interval 1-1 and the brightness adjustment interval 1-4: [L3, +∞] in sequence. When the processing module 20 detects that 0<Lx<L1, the binary number 00 of the brightness compensation level mapping specified by the brightness adjustment interval 1-1 is output; when the processing module 20 detects that L1≤Lx<L2, the binary number 01 of the brightness compensation level mapping specified by the brightness adjustment interval 1-2 is output; when the processing module 20 detects that L2≤Lx<L3, the binary number 10 of the brightness compensation level mapping specified by the brightness adjustment interval 1-3 is output; when the processing module 20 detects that L3≤L, the binary number 11 of the brightness compensation level mapping specified by the brightness adjustment interval 1-4 is output.

[0109] Furthermore, in some feasible embodiments, the control method of the brightness compensation circuit of the present application includes the following implementation steps:

[0110] Step B10: The processing module 20 receives the light intensity electrical signal sent by the light sensing unit 101, generates a target PWM waveform based on the voltage average of the light intensity electrical signal, and transmits the target PWM waveform to the driving module 30, so that the driving module 30 adjusts the voltage value of each voltage pin P1 according to the duty cycle of the target PWM waveform and then outputs it.

[0111] In this embodiment, each photoelectric sensor Q1 provided by the light sensing unit 101 collects the light intensity of the current ambient light, and each photoelectric sensor Q1 converts the light intensity collected by each photoelectric sensor Q1 into an electrical signal to obtain a light intensity electrical signal output by each photoelectric sensor Q1. Then, based on the electrical connection between each photoelectric sensor Q1 and the processing module 20, the processing module 20 can promptly receive the light intensity electrical signal uploaded by each photoelectric sensor Q1, and then filter out the light intensity electrical signal with the largest signal value and the light intensity electrical signal with the smallest signal value among all the light intensity electrical signals to obtain a filtered light intensity electrical signal, thereby avoiding the risk of data anomalies caused by sensor abnormalities or abnormal light spots and abnormal occlusions. Then, after the processing module 20 performs arithmetic averaging on the filtered light intensity electrical signals, a voltage mean is obtained, and a target PWM waveform corresponding to the voltage mean is generated. Next, after the processing module 20 outputs the target PWM waveform to the driving module 30, the voltage pin P1 of each output voltage Gamma will calculate its own output voltage value based on the duty cycle of the target PWM waveform, thereby realizing the display brightness control of the display device under the current ambient light, effectively improving the intelligence of the brightness adjustment of the display device, and ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly enhance the user's visual experience.

[0112] It should be noted that the PWM wave period set in this application is fixed, and the higher the light intensity, the wider the positive pulse width of the PWM wave. That is, the duty cycle of the target PWM waveform can be understood as the duty cycle of the positive pulse width in the target PWM waveform.

[0113] The voltage pin P1 of the output voltage Gamma can be represented by Gamma1-1 to Gamma1-n. The voltage value output by Gamma1-1 when the display brightness is brightest is a fixed value and can be customized according to application requirements. This application does not impose any restrictions on this. For example, this application can set the voltage value output by Gamma1-1 when the display brightness is brightest to 15V. When the external environment is very dark, it can be understood here that the brightness is 0. At this time, the voltage value output by Gamma1-1 is 9V, and the display brightness of the display device just meets the requirements. The PWM wave positive pulse duty cycle output by the processing module 20 is a minimum of 9 / 15=60%, and the highest bit is 100% (when the external brightness exceeds a certain brightness, it is always output at 100%). The remaining voltages of Gamma1-2 to Gamma1-n will also be adjusted accordingly according to the changes in the Gamma1 voltage.

[0114] In summary, the present application performs arithmetic averaging on the light intensity digital signal uploaded via the analog-to-digital unit 102 or the light intensity electrical signal directly uploaded by the light sensing unit 101 through the processing module 20, and generates a corresponding binary number or target PWM waveform to output to the driving module 30, so that the driving module 30 can accurately adjust the voltage of each voltage pin P1 according to the corresponding binary number or target PWM waveform, thereby realizing adaptive brightness adjustment of the ambient light intensity, thereby effectively improving the intelligence of the brightness adjustment of the display device, ensuring that the display device can present the best display effect under different ambient light conditions, so as to significantly improve the user's visual experience.

[0115] In addition, the present application also provides a display panel, which includes a color filter substrate, a liquid crystal layer and an array substrate, the liquid crystal layer is arranged between the array substrate and the color filter substrate, and the array substrate includes any of the above-mentioned brightness compensation circuits.

[0116] In addition, this application also provides a display device. Figure 6 , Figure 6 Schematic diagram of the structure of the display device involved in the embodiment of the present application. The display device of the embodiment of the present application can be a device for locally running the control method of the brightness compensation circuit.

[0117] like Figure 6 As shown, the display device of the embodiment of the present application may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a Wi-Fi interface).

[0118] Memory 1005 is provided on the display device body. Memory 1005 stores a program that, when executed by processor 1001, implements corresponding operations. Memory 1005 is also used to store parameters used by the display device. Memory 1005 can be a high-speed RAM memory or a non-volatile memory, such as a disk drive. Memory 1005 can also optionally be a storage device independent of processor 1001.

[0119] Those skilled in the art will understand that Figure 6The display device structure shown in the figure does not constitute a limitation on the display device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0120] like Figure 6 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a control program for a brightness compensation circuit.

[0121] exist Figure 6 In the display device shown, the processor 1001 can be used to call the control program of the brightness compensation circuit stored in the memory 1005 and execute the steps of the control method of the brightness compensation circuit as described above.

[0122] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0123] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0124] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium such as ROM / RAM, magnetic disk, or optical disk as mentioned above, and includes a number of instructions for enabling a display device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0125] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A brightness compensation circuit, characterized in that: The brightness compensation circuit comprises: An acquisition module is used to collect the light intensity digital signal of the current ambient light; a processing module electrically connected to the acquisition module, the processing module being configured to determine the actual light intensity brightness of the current ambient light based on the light intensity digital signal sent by the acquisition module, and output a binary number based on the brightness compensation gear corresponding to the actual light intensity brightness, the binary number including at least one unit bit; a driving module electrically connected to the processing module, the driving module including a voltage pin paired with each unit bit, the driving module being configured to receive the binary number output by the processing module and adjust the voltage value of the paired voltage pin according to the level signal of each unit bit before outputting the result; The processing module is configured to search for a brightness adjustment interval corresponding to the actual light intensity brightness from a plurality of preset brightness adjustment intervals, use the brightness adjustment interval corresponding to the actual light intensity brightness as a target brightness adjustment interval, determine a brightness compensation gear mapped to the target brightness adjustment interval according to a preset interval gear mapping table, and generate a binary number according to the brightness compensation gear, wherein the preset number of intervals of the brightness adjustment interval is 2 x , the number of unit bits of the binary number is 2 x The x value in , x is a natural number greater than 0; The processing module is further configured to: when the preset number of brightness adjustment intervals is 2 2 When 01 is 0, it is determined that the binary number includes two unit bits, and the first unit bit and the second unit bit of the two unit bits are respectively used as the first unit bit and the second unit bit in the order of the binary number from left to right. When the binary number is 01, the voltage pin with the same voltage serial number as the first unit bit in the driving module is pulled down to a low level position, and the voltage pin with the same voltage serial number as the second unit bit in the driving module is connected to a high level position; wherein the voltage serial number of the first unit bit is the pin number of the output voltage VCOM, and the voltage serial number of the second unit bit is the pin number of the output voltage Gamma.

2. The brightness compensation circuit according to claim 1, wherein: The acquisition module includes: a light sensing unit and an analog-to-digital unit; The light sensing unit is electrically connected to the processing module through the analog-to-digital unit; The light sensing unit is used to collect the light intensity electrical signal of the current ambient light and send the light intensity electrical signal to the analog-to-digital unit; The analog-to-digital unit is used to access the light intensity electrical signal of the light sensing unit, and convert the light intensity electrical signal into a light intensity digital signal and output it to the processing module.

3. The brightness compensation circuit according to claim 2, wherein: The light sensing unit is also electrically connected to the processing module; The processing module is used to access the light intensity electrical signal sent by the light sensing unit, generate a target PWM waveform based on the voltage average of the light intensity electrical signal, and transmit the target PWM waveform to the driving module so that the driving module can adjust the voltage value of each voltage pin according to the duty cycle of the target PWM waveform and then output it.

4. The brightness compensation circuit according to claim 2, wherein: The light sensing unit includes a plurality of photoelectric sensors, and the photoelectric sensors are evenly arranged in a non-display area according to preset intervals. The non-display area is arranged near a display edge of a display area in a display screen.

5. A control method for a brightness compensation circuit, characterized in that: The control method of the brightness compensation circuit is applied to the brightness compensation circuit according to any one of claims 1 to 4, and the control method of the brightness compensation circuit includes: Collect the light intensity digital signal of the current ambient light through the acquisition module; After the processing module receives the light intensity digital signal sent by the acquisition module, the actual light intensity brightness of the current ambient light is determined according to the light intensity digital signal, and the processing module is controlled to output a binary number according to the brightness compensation gear corresponding to the actual light intensity brightness, where the binary number includes at least one unit bit; After the driving module receives the binary number output by the processing module, the driving module is controlled to adjust the voltage value of the paired voltage pin according to the level signal of each unit bit and then output; The processing module is configured to search for a brightness adjustment interval corresponding to the actual light intensity brightness from a plurality of preset brightness adjustment intervals, use the brightness adjustment interval corresponding to the actual light intensity brightness as a target brightness adjustment interval, determine the brightness compensation gear mapped to the target brightness adjustment interval according to a preset interval gear mapping table, and generate a binary number according to the brightness compensation gear, wherein the preset number of intervals of the brightness adjustment interval is 2 x , the number of unit bits of the binary number is 2 x The x value in , x is a natural number greater than 0; The processing module is further configured to: when the preset number of brightness adjustment intervals is 2 2 When 01 is 0, it is determined that the binary number includes two unit bits, and the first unit bit and the second unit bit of the two unit bits are respectively used as the first unit bit and the second unit bit in the order of the binary number from left to right. When the binary number is 01, the voltage pin with the same voltage serial number as the first unit bit in the driving module is pulled down to a low level position, and the voltage pin with the same voltage serial number as the second unit bit in the driving module is connected to a high level position; wherein the voltage serial number of the first unit bit is the pin number of the output voltage VCOM, and the voltage serial number of the second unit bit is the pin number of the output voltage Gamma.

6. The control method of the brightness compensation circuit according to claim 5, wherein: There are multiple light intensity digital signals, and the step of determining the actual light intensity brightness of the current ambient light according to the light intensity digital signals includes: Sorting the light intensity digital signals in ascending order of signal value to obtain a sorted light intensity signal sequence, and determining a target digital signal of the light intensity signal sequence, wherein the target digital signal includes the light intensity digital signal with the largest signal value and the light intensity digital signal with the smallest signal value; Detecting whether the number of signals of the target digital signal exceeds a preset average number threshold; If yes, determining the repetition frequency of the signal values ​​of each of the light intensity digital signals in the light intensity signal sequence, and taking the signal value with the largest repetition frequency as the actual light intensity brightness of the current ambient light; If not, the target digital signal in the light intensity signal sequence is deleted to obtain a deleted light intensity signal sequence, and the deleted light intensity signal sequence is averaged to obtain an average light intensity value, and the average light intensity value is used as the actual light intensity brightness of the current ambient light.

7. The control method of the brightness compensation circuit according to claim 5, wherein: The step of controlling the processing module to output a binary number according to the brightness compensation gear corresponding to the actual light intensity brightness includes: Determining a plurality of preset brightness adjustment intervals and a maximum value of each of the brightness adjustment intervals, and sorting the brightness adjustment intervals in ascending order of the maximum value of the interval to obtain a plurality of sorted brightness adjustment intervals; Traversing the sorted brightness adjustment intervals in sequence according to the actual light intensity brightness, and taking the brightness adjustment interval to which the traversed actual light intensity brightness belongs as the target brightness adjustment interval; After determining the brightness compensation level corresponding to the target brightness adjustment interval, the processing module outputs a binary number mapped to the brightness compensation level.

8. The control method of the brightness compensation circuit according to claim 5, wherein: The control method of the brightness compensation circuit further includes: The processing module receives the light intensity electrical signal sent by the light sensing unit, generates a target PWM waveform based on the voltage average of the light intensity electrical signal, and transmits the target PWM waveform to the driving module so that the driving module can adjust the voltage value of each voltage pin according to the duty cycle of the target PWM waveform and then output it.

9. A display panel, characterized in that: The display panel includes a color filter substrate, a liquid crystal layer and an array substrate. The liquid crystal layer is provided between the array substrate and the color filter substrate. The array substrate includes the brightness compensation circuit according to any one of claims 1 to 4.

10. A display device, characterized in that: The display device includes the display panel according to claim 9, a memory, a processor, and a control program for the brightness compensation circuit stored in the memory and executable on the processor. When the processor executes the control program for the brightness compensation circuit, the steps of the control method for the brightness compensation circuit according to any one of claims 5 to 8 are implemented.

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