Method and system for carrying out display correction on LED array

Abstract

The invention discloses a method and system for carrying out display correction on an LED array, and the method comprises the steps: after an image displayed by the LED array is detected to be matched with an image displayed by a front end (such as a computer), if the displayed contents, directions and arrangements are completely the same, the front end collects a first image of the LED array through an image collector, and carries out the display correction on the LED array according to pixels contained in the first image; the method comprises the following steps: generating a gray-scale correction coefficient with a required bit number, sending the gray-scale correction coefficient to a control end, and sending the gray-scale correction coefficient to an AM driving chip corresponding to an LED array by the control end, so that the AM driving chip corrects the display effect of the LED array according to the gray-scale correction coefficient, thereby improving the uniformity of low gray scales of an LED array image, enabling the image display of the LED array to be clearer, and improving the display effect of the LED array. A better visual effect is achieved; and the brightness correction coefficient, the gray scale correction coefficient and the color temperature adjustment coefficient are read through the receiving card, so that the design complexity and the design area of the AM chip can be further reduced, and the AM design and lamp control cost is further reduced.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal display technology, and in particular to a method and system for performing display correction on an LED array. Background Art

[0002] In the field of Mini / Micro small pitch direct display, MIP (Mini / Micro LED in Package) and COB (Chip-on-Board, directly binding LED chips to circuit boards) are the two major technical routes. As the pitch decreases, PM (Passive Matrix) driving mode is increasingly difficult to meet the layout of the back of the module. Therefore, MIP technology that combines lamp and driver came into being.

[0003] Figure 1 This is a schematic diagram of the structure of the existing lamp-driver integrated MIP technology. Figure 1 As shown, the AMIC (Analog Integrated Circuit) chip used has three constant current PWM control channels, which are connected to R, G, and B three-color LEDs to achieve LED brightness control.

[0004] However, in practical applications, the PWM control channel current of the existing AM chip is small, and the SR (Slew Rate) when turning on or off the PWM will be affected by the parasitic capacitance and become extremely slow, resulting in the low grayscale PWM being unable to be fully turned on, and the grayscale when lighting up will become relatively high. In addition, due to the different times of the rising edge and the falling edge, the pulse width of the PWM will have a relatively large difference, and the uniformity of the low grayscale will be very poor. Therefore, it is urgent to propose a technical solution to improve the uniformity of the low grayscale of the LED array image, thereby improving the picture display effect of the LED array. Summary of the invention

[0005] The present invention provides a method and system for performing display correction on an LED array, which can improve the uniformity of low grayscale images of the LED array, thereby improving the picture display effect of the LED array.

[0006] In order to solve the above technical problems, the first aspect of the present invention discloses a method for display correction of an LED array, the method is applied to a lighting correction system, the lighting correction system includes a control end and a front end, the control end and the front end are connected in communication, the method includes: After detecting that the image displayed by the LED array matches the image displayed by the front end, the front end acquires a first image of the LED array through an image collector, generates a correction coefficient according to pixels included in the first image, and sends the correction coefficient to the control end, wherein the correction coefficient includes a grayscale correction coefficient of a first preset bit number; The control end receives the correction coefficient and sends the correction coefficient to the AM driver chip corresponding to the LED array. The correction coefficient is used for the AM driver chip corresponding to the LED array to correct the display effect of the LED array.

[0007] As an optional implementation manner, in the first aspect of the present invention, before the front end generates the correction coefficient according to the pixels included in the first image, the method further includes: The front end generates power adjustment data of a second preset number of bits according to the pixels included in the first image, and sends the power adjustment data of the second preset number of bits to the control end; The control end receives the power adjustment data of the second preset bit number, and sends the power adjustment data of the second preset bit number to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to adjust the display effect of the LED array according to the power adjustment data of the second preset bit number; The front end acquires a second image of the calibrated LED array through the image collector, and determines a brightness adjustment effect of the LED array according to the second image and the first image; The front end determines whether the image display of the LED array meets the predetermined image display requirement according to the brightness adjustment effect of the LED array; When the result is judged to be negative, the front end updates the second image to the first image, and re-executes the operation of generating power adjustment data of a second preset bit number according to the pixels contained in the first image, until the image display of the LED array meets the image display requirements.

[0008] As an optional implementation, in the first aspect of the present invention, after detecting that the image displayed by the LED array matches the image displayed by the front end, the method further includes: The front end collects the initial display brightness of the LED array through a brightness collector, and determines whether the initial display brightness is within a preset display brightness range; When it is determined that the display brightness is within the preset display brightness range, the front end triggers the operation of generating power adjustment data of a second preset bit number according to the pixels included in the first image.

[0009] As an optional embodiment, in the first aspect of the present invention, the method further comprises: When it is determined that the display brightness is not within the preset display brightness range, the front end generates a brightness correction coefficient corresponding to the LED array according to the initial display brightness of the LED array, and sends the brightness correction coefficient corresponding to the LED array to the control end; The control end receives the brightness correction coefficient corresponding to the LED array, and sends the brightness correction coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the brightness effect of the LED array according to the brightness correction data, until the display brightness of the LED array is within the preset display brightness range, and trigger the execution of the operation of generating a second preset bit number of power adjustment data according to the pixels contained in the first image.

[0010] As an optional embodiment, in the first aspect of the present invention, the method further comprises: The front end collects the current display color temperature corresponding to the LED array based on the brightness and chromaticity meter, and determines whether the current display color temperature corresponding to the LED array meets the predetermined color temperature condition; When it is determined that the condition is not satisfied, the front end generates a color temperature adjustment coefficient corresponding to the LED array according to the current display color temperature corresponding to the LED array and the color temperature condition, and sends the color temperature adjustment coefficient corresponding to the LED array to the control end, wherein the color temperature adjustment coefficient corresponding to the LED array includes one or more of an R channel color temperature adjustment coefficient, a G channel color temperature adjustment coefficient, and a B channel color temperature adjustment coefficient; The control end receives the color temperature adjustment coefficient corresponding to the LED array, and sends the color temperature adjustment coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the color temperature of the LED array according to the color temperature adjustment coefficient corresponding to the LED array.

[0011] As an optional embodiment, in the first aspect of the present invention, the method further comprises: The front end sends the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient to the control end, and the control end stores the power adjustment data, the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient in the storage space corresponding to the LED array; or The front end determines the target correction coefficient corresponding to the LED array according to the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient, and sends the target correction coefficient corresponding to the LED array to the control end; the control end stores the power adjustment data and the target correction coefficient in the storage space corresponding to the LED array; The power adjustment data and the target correction coefficient serve as a basis for controlling the LED array when the LED array is subsequently powered on.

[0012] As an optional implementation, in the first aspect of the present invention, the control end includes a controller or a receiving card; Before the front end passes the first image of the LED array through the image collector, the method further comprises: When the control end includes the controller, the control end obtains configuration parameters and performs configuration operations on the controller according to the configuration parameters; After the controller completes the configuration operation, the front end obtains the image displayed by the LED array and the image displayed by the front end, and determines whether the image displayed by the LED array and the image displayed by the front end are consistent; When the result of the judgment is yes, the front end generates a configuration parameter solidification prompt, and performs a solidification operation on the configuration parameter according to the configuration parameter solidification prompt: The front end performs a curing operation on the configuration parameters according to the configuration parameter curing prompt, including: The front end sends the configuration parameter fixing prompt to the receiving card to trigger the receiving card to fix the configuration parameter in the receiving card; and / or The front end sends the configuration parameter fixing prompt to the controller to trigger the controller to fix the configuration parameters in the controller.

[0013] The second aspect of the present invention discloses a system for display correction of an LED array, the system comprising a control end and a front end, the control end and the front end are in communication connection, the front end comprises an acquisition module, a generation module and a first communication module, the control end comprises a second communication module and a correction module, wherein: The acquisition module is used to acquire a first image of the LED array through an image acquisition device after detecting that the image displayed by the LED array matches the image displayed by the front end; The generating module is used to generate a correction coefficient according to the pixels included in the first image; The first communication module is used to send the correction coefficient to the control end, wherein the correction coefficient includes a grayscale correction coefficient of a first preset bit number; The second communication module is used to receive the correction coefficient; The correction module is used to send the correction coefficient to the AM driver chip corresponding to the LED array, and the correction coefficient is used for the AM driver chip corresponding to the LED array to correct the display effect of the LED array.

[0014] As an optional implementation, in the second aspect of the present invention, the generating module is further configured to generate power adjustment data of a second preset number of bits according to the pixels included in the first image before generating the correction coefficient according to the pixels included in the first image; The first communication module is further used to send the power adjustment data of the second preset number of bits to the control end; The second communication module is further used to receive the power adjustment data of the second preset bit number; The correction module is further used to send the second preset bit number of power adjustment data to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to adjust the display effect of the LED array according to the second preset bit number of power adjustment data; The acquisition module is further used to acquire the second image of the calibrated LED array through the image acquisition device; The front end also includes: A determination module, configured to determine a brightness adjustment effect of the LED array according to the second image and the first image; A first judgment module, used for judging whether the image display of the LED array meets a predetermined image display requirement according to the brightness adjustment effect of the LED array; The update module is used to update the second image to the first image when the judgment result is no, and trigger the generation module to re-execute the operation of generating the power adjustment data of the second preset bit number according to the pixels contained in the first image, until the image display of the LED array meets the image display requirements.

[0015] As an optional implementation, in the second aspect of the present invention, the acquisition module is further used to acquire the initial display brightness of the LED array through a brightness collector after detecting that the image displayed by the LED array matches the image displayed by the front end; The first judgment module is also used to judge whether the initial display brightness is within the preset display brightness range; when it is judged that it is within the preset display brightness range, the generation module is triggered to execute the operation of generating power adjustment data of a second preset bit number based on the pixels contained in the first image.

[0016] As an optional implementation, in the second aspect of the present invention, the generating module is further used to generate a brightness correction coefficient corresponding to the LED array according to the initial display brightness of the LED array when it is determined that the display brightness is not within the preset display brightness range; The first communication module is further used to send the brightness correction coefficient corresponding to the LED array to the control end; The second communication module is further used to receive a brightness correction coefficient corresponding to the LED array; The correction module is also used to send the brightness correction coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the brightness effect of the LED array according to the brightness correction data, until the display brightness of the LED array is within the preset display brightness range, and trigger the generation module to execute the operation of generating the second preset bit number of power adjustment data according to the pixels contained in the first image.

[0017] As an optional implementation, in the second aspect of the present invention, the acquisition module is further used to acquire the current display color temperature corresponding to the LED array based on the brightness and chromaticity meter; The front end also includes: A second judgment module is used to judge whether the current display color temperature corresponding to the LED array meets a predetermined color temperature condition; The generating module is further configured to generate a color temperature adjustment coefficient corresponding to the LED array according to the current display color temperature corresponding to the LED array and the color temperature condition when it is determined that the color temperature condition is not satisfied; The first communication module is further used to send the color temperature adjustment coefficient corresponding to the LED array to the control end, where the color temperature adjustment coefficient corresponding to the LED array includes one or more of the color temperature adjustment coefficient of the R channel, the color temperature adjustment coefficient of the G channel and the color temperature adjustment coefficient of the B channel; The second communication module is further used to receive the color temperature adjustment coefficient corresponding to the LED array; The correction module is also used to send the color temperature adjustment coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the color temperature of the LED array according to the color temperature adjustment coefficient corresponding to the LED array.

[0018] As an optional implementation, in the second aspect of the present invention, the first communication module is further used to send the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient to the control end; the second communication module is further used to store the power adjustment data, the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient in the storage space corresponding to the LED array; or, The first communication module is further used to determine the target correction coefficient corresponding to the LED array according to the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient, and send the target correction coefficient corresponding to the LED array to the control end; the second communication module is further used to store the power adjustment data and the target correction coefficient in the storage space corresponding to the LED array; The power adjustment data and the target correction coefficient serve as a basis for controlling the LED array when the LED array is subsequently powered on.

[0019] As an optional implementation, in the second aspect of the present invention, the control end includes a controller or a receiving card; The control end is further used for obtaining configuration parameters before the front end passes the first image of the LED array through the image collector, and when the control end includes the controller, and performing configuration operations on the controller according to the configuration parameters; The acquisition module is further used to obtain the image displayed by the LED array and the image displayed by the front end after the controller completes the configuration operation, and determine whether the image displayed by the LED array and the image displayed by the front end match; The generating module is further configured to generate a configuration parameter solidification prompt when the result of the judgment is yes, and perform a solidification operation on the configuration parameter according to the configuration parameter solidification prompt: The specific manner in which the generating module performs a curing operation on the configuration parameters according to the configuration parameter curing prompt includes: Sending the configuration parameter fixation prompt to the receiving card to trigger the receiving card to fix the configuration parameter in the receiving card; and / or The configuration parameter fixing prompt is sent to the controller to trigger the controller to fix the configuration parameter in the controller.

[0020] A third aspect of the present invention discloses another system for performing display correction on an LED array, the correction system comprising: A memory storing executable program code; A front end and a control end coupled to the memory, wherein the front end and the control end are in communication connection with each other; The front end calls the executable program code stored in the memory to execute the steps corresponding to the front end in any one of the methods for display correction of an LED array disclosed in the first aspect of the present invention; the control end calls the executable program code stored in the memory to execute the steps corresponding to the control end in any one of the methods for display correction of an LED array disclosed in the first aspect of the present invention.

[0021] The fourth aspect of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute part or all of the steps in any method for display correction of an LED array disclosed in the first aspect of the present invention.

[0022] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: In an embodiment of the present invention, after detecting that the image displayed by the LED array matches the image displayed by the front end (such as a computer), if the displayed content, direction and arrangement are exactly the same, the front end acquires the first image of the LED array through an image collector, and generates a grayscale correction coefficient of the required number of bits based on the pixels contained in the first image, and sends it to the control end. The control end then sends the grayscale correction coefficient to the AM driver chip corresponding to the LED array, so that the AM driver chip can correct the display effect of the LED array according to the grayscale correction coefficient, so as to improve the uniformity of the low grayscale of the LED array image, so that the picture display of the LED array is clearer and has a better visual effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a flow chart of a method for display correction of an LED array disclosed in an embodiment of the present invention; Figure 2 It is a structural diagram of lighting driving between a controller and an AM chip disclosed in an embodiment of the present invention; Figure 3 This is a schematic diagram of a light box driving structure disclosed in an embodiment of the present invention; Figure 4 It is a schematic diagram of the chip structure of an AM chip disclosed in an embodiment of the present invention; Figure 5 It is a schematic diagram of the architecture of an LED array driver corresponding to an AM chip disclosed in the present invention; Figure 6 It is a schematic diagram of a power-on control timing before writing address identification to the chip of each chipset disclosed in an embodiment of the present invention; Figure 7 It is another schematic diagram of a flow chart of display correction for an LED array disclosed in an embodiment of the present invention; Figure 8 It is a structural schematic diagram of a system for performing display correction on an LED array disclosed in an embodiment of the present invention; Fig. 9 It is a structural schematic diagram of another system for performing display correction on an LED array disclosed in an embodiment of the present invention; Fig.10 It is a structural schematic diagram of another system for performing display correction on an LED array disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] The present invention discloses a method and system for display correction of an LED array. After detecting that the image displayed by the LED array matches the image displayed by the front end (such as a computer), if the displayed content, direction and arrangement are exactly the same, the front end collects the first image of the LED array through an image collector, and generates a grayscale correction coefficient of the required number of bits according to the pixels contained in the first image, and sends it to the control end. The control end then sends the grayscale correction coefficient to the AM driver chip corresponding to the LED array, so that the AM driver chip can correct the display effect of the LED array according to the grayscale correction coefficient, so as to improve the uniformity of the low grayscale of the LED array image, so that the picture display of the LED array is clearer and has a better visual effect. The following are detailed descriptions.

[0029] Embodiment 1 See also Figure 1 , Figure 1 1 is a flow chart of a method for display correction of an LED array disclosed in an embodiment of the present invention. Figure 1 The described method can be applied to any LCD display scene that requires display correction (such as movie watching scene and e-sports game scene) and the scene has a corresponding correction system, and the correction system includes a control end and a front end, wherein the control end and the front end are connected in communication, and the front end can be understood as any terminal that can collect images, collect brightness and analyze LED arrays, such as user equipment (such as computers, mobile phones). Figure 1 As shown, the method for performing display correction on the LED array may include the following operations: 101. After detecting that the image displayed by the LED array matches the image displayed by the front end, the front end acquires a first image of the LED array through an image collector, generates a correction coefficient based on the pixels contained in the first image, and sends the correction coefficient to the control end. The correction coefficient includes a grayscale correction coefficient of a first preset bit number (such as 8 bits).

[0030] In the embodiment of the present invention, the content, direction and arrangement of the image displayed by the LED array and the image displayed by the front end are exactly the same, indicating that the two match. Optionally, the image collector can be integrated in the front end or can be independent of the front end. Optionally, the first image can be a picture such as RGB pure color L255 that can analyze the corresponding grayscale correction coefficient. And optionally, the grayscale correction coefficient can specifically be a low grayscale correction coefficient or a full grayscale correction coefficient.

[0031] 102. The control end receives the correction coefficient and sends the correction coefficient to the AM driver chip corresponding to the LED array. The correction coefficient is used by the AM driver chip corresponding to the LED array to correct the display effect of the LED array.

[0032] In the embodiment of the present invention, optionally, after obtaining the grayscale correction coefficient, the AM chip can immediately perform display effect correction on the LED array, or save it first and perform display effect correction when needed.

[0033] In an embodiment of the present invention, optionally, step 101-step 102 is a grayscale correction. If the display effect obtained by this grayscale correction cannot meet the required grayscale display requirements, the image acquisition is performed again on the LED array after the previous grayscale correction based on the image acquisition device, and the image acquired this time is updated to the first image, and the above-mentioned correction coefficient is generated according to the pixels contained in the first image, and the correction coefficient is sent to the control end. The correction coefficient includes a grayscale correction coefficient with a first preset bit number (such as 8 bits). The control end receives the correction coefficient and sends the correction coefficient to the AM driver chip corresponding to the LED array. The correction coefficient is used for the AM driver chip corresponding to the LED array to perform an operation to correct the display effect of the LED array until the display effect of the LED array after the grayscale correction meets the required grayscale display requirements. It should be noted that the first preset bit number corresponding to each grayscale correction coefficient may be the same or different.

[0034] It can be seen that implementation Figure 1 The described method for display correction of the LED array detects that the image displayed by the LED array matches the image displayed by the front end (such as a computer), if the displayed content, direction and arrangement are exactly the same, the front end collects the first image of the LED array through the image collector, and generates a grayscale correction coefficient of the required number of bits based on the pixels contained in the first image, and sends it to the control end. The control end then sends the grayscale correction coefficient to the AM driver chip corresponding to the LED array, so that the AM driver chip can correct the display effect of the LED array according to the grayscale correction coefficient, so as to improve the uniformity of the low grayscale of the LED array image, make the picture display of the LED array clearer, and have a better visual effect.

[0035] In an optional embodiment, before the front end generates the correction coefficient according to the pixels included in the first image, the method may further include the following steps: The front end generates power adjustment data (such as current adjustment data or voltage adjustment data) of a second preset number of bits according to the pixels included in the first image, and sends the power adjustment data of the second preset number of bits (such as 6 bits) to the control end; The control end receives the power adjustment data of the second preset number of bits, and sends the power adjustment data of the second preset number of bits to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to adjust the display effect of the LED array according to the power adjustment data of the second preset number of bits; The front end acquires a second image of the calibrated LED array through an image collector, and determines the brightness adjustment effect of the LED array according to the second image and the first image; The front end determines whether the image display of the LED array meets the predetermined image display requirements according to the brightness adjustment effect of the LED array; When the result is negative, the front end updates the second image to the first image, and re-executes the above-mentioned operation of generating power adjustment data of a second preset bit number according to the pixels contained in the first image, until the image display of the LED array meets the image display requirements.

[0036] It can be seen that this optional embodiment first adjusts the channel current or channel voltage of the AM chip lighting drive to increase the channel current or channel voltage of the AM chip lighting drive, so that the display effect of the LED array meets the corresponding brightness display requirements, and then performs grayscale correction on the display of the LED array, which can further improve the grayscale correction efficiency and accuracy and reliability of the LED array display, thereby further improving the uniformity of the full grayscale including the low-level, and further improving the efficiency of the LED array display effect that meets the display requirements.

[0037] In another optional embodiment, after detecting that the image displayed by the LED array matches the image displayed by the front end, the method may further include the following steps: The front end collects the initial display brightness of the LED array through a brightness collector, and determines whether the initial display brightness is within a preset display brightness range; When it is determined that the display brightness is within the preset range, the front end triggers the above-mentioned operation of generating power adjustment data of a second preset number of bits according to the pixels included in the first image.

[0038] In this optional embodiment, further, when it is determined that the display brightness is not within the preset display brightness range, the front end generates a brightness correction coefficient corresponding to the LED array according to the initial display brightness of the LED array, and sends the brightness correction coefficient corresponding to the LED array to the control end; The control end receives the brightness correction coefficient corresponding to the LED array, and sends the brightness correction coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the brightness effect of the LED array according to the brightness correction data, until the display brightness of the LED array is within the preset display brightness range, and trigger the execution of the above-mentioned operation of generating a second preset bit number of power adjustment data based on the pixels contained in the first image.

[0039] In this optional embodiment, the brightness collector can be optionally integrated into the front end or can be independent of the front end.

[0040] In this optional embodiment, the brightness correction can be performed on the RGB of the LED array at the same time, or the brightness correction can be performed on the R, G, and B of the LED array separately, and the interval of the brightness correction coefficient required for correction is 0-1, and a certain value in this interval is taken for each brightness correction. Further, the specific process of brightness correction is: the AM chip multiplies the light brightness control data by the brightness correction coefficient to obtain the corrected light brightness control data, and outputs it through the light control channel of the AM chip.

[0041] It can be seen that in this optional embodiment, if the LED array is overexposed when initially lit, the display brightness of the LED array is first reduced to an appropriate level, and then the channel current or channel voltage of the AM chip's lighting drive is adjusted, so as to reduce the need for multiple adjustments to achieve the desired display effect due to direct channel current or channel voltage adjustment during initial lighting overexposure, thereby helping to improve the accuracy and efficiency of channel current or channel voltage regulation, and further helping to further improve the efficiency of the LED array in achieving a satisfactory display effect.

[0042] In yet another optional embodiment, when the control terminal includes a controller, the method may further include the following steps: The controller receives the light control information sent by the front end, analyzes the light control information, and obtains light control data corresponding to the LED array, wherein the light control data corresponding to the LED array includes light control data corresponding to the LED array, and the light control data corresponding to the LED array includes one or more of R channel light control data, G channel light control data, and B channel light control data; The controller obtains the address identifiers of all AM chips, and writes the light control data corresponding to the LED array into the corresponding AM chip according to the address identifiers of all AM chips, so that the AM chip can perform the lighting operation after receiving the light control data.

[0043] In this optional embodiment, the front end can be understood as any terminal that can send lighting control information to the controller, such as user equipment (such as computers, mobile phones), and receiving cards connected to user equipment. The user equipment can directly send the lighting control information to the controller, or the receiving card can send the lighting control information to the controller.

[0044] In this optional embodiment, the address identifier of the AM chip may be any identifier capable of address recognition. And optionally, the controller may control one AM chip or a group of AM chips.

[0045] In this optional embodiment, optionally, Figure 2 is a schematic diagram of a structure for lighting driving between a controller and an AM chip disclosed in an embodiment of the present invention, such as Figure 2As shown, the controller receives light control information from the front end through TXP / TXN, and reads back the signal to the front end through RXP / RXN. Whether receiving or reading back, the transmitted signal is a differential high-speed transmission signal. The light control data is transmitted to the AM chip of the chipset Mini / micro LED array through CLK, SW and DATA1, DATA2, DATAM, and the input and output of VR power supply, VG power supply, and VB power supply are provided through analog switches (also called timing switches). The analog switches provide the input and output of power supply VDDIN, VDDOUT1, VDDOUT2, and VDDOUTN for the AM chip of the chipset. The two analog switches here are two analog switches. Among them, Figure 2 Two analog switches are shown, and the specific number corresponds to the corresponding display screen. Optionally, Figure 2 The analog switch can be built into the controller or placed outside the controller, which can reduce the design area and number of PIN pins of the controller. Figure 2 It can be seen that the number of AM chips is small and the required current is small. Therefore, VR power supply, VG power supply, and VB power supply can carry chips from many chipsets at the same time. For example, if the display module of 9 chipsets is externally connected to the analog switch, only three channels of VR power supply, VG power supply, and VB power supply are required; similarly, since the current of the AM chip is small, about 1mA, the switch can be realized with very simple analog development.

[0046] In this optional embodiment, optionally, Figure 3 is a schematic diagram of a light box driving structure disclosed in an embodiment of the present invention, such as Figure 3 As shown, optionally, the receiving card is installed on the central control board (also called the integrator board), and obtains image data transmission from the front end (such as a computer) through a network cable, and analyzes the obtained image data to obtain the lighting control information of multiple modules (such as module ①-module N) and the module identification corresponding to each module lighting control information, and transmits the module lighting control information to the controller corresponding to the module identification through the CON1, CON2, CON3, CON4, and CONn ports according to the module identification corresponding to the module lighting control information. The controller analyzes the received module lighting control information, obtains the corresponding light control data, and performs lighting drive of the corresponding AM chip array. Among them, SPI communicates with the flash memory to store or read the calibration data of the light box.

[0047] It can be seen that this optional embodiment writes the lighting control data through the address identifier of the AM chip, which can improve the writing accuracy and efficiency of the lighting control data, thereby facilitating the improvement of the lighting driving accuracy of the AM chip.

[0048] In yet another optional embodiment, the method may further include the following steps: The AM chip detects a target channel whose power supply is in a power-on state among the R channel, G channel and B channel corresponding to the LED array, and outputs light control data matching the target channel through the light control channel of the AM chip, so that the LED array outputs color light corresponding to the target channel. The light control data matching the target channel includes pixel control data.

[0049] In the embodiment of the present invention, each LED lamp has a one-to-one corresponding AM chip, which can be understood as each pixel corresponding to each LED lamp has a one-to-one corresponding AM chip, and the one-to-one corresponding AM chips of all LED lamps are different from each other.

[0050] In the embodiment of the present invention, the lighting control data matched with the target channel also includes brightness control data.

[0051] Figure 4 is a schematic diagram of the chip structure of an AM chip disclosed in an embodiment of the present invention, such as Figure 4 As shown, the AM chip has a unique light control channel CH, which is used to connect the LED lamp and control the brightness of the LED lamp. The channel is implemented by analog circuits. The area of ​​a single channel is greatly reduced compared to the existing three light control channels. The entire area can be reduced to 1 / 4 of the existing area or even smaller. VDD is the power supply for the AM chip, such as 1.2V, 1.5V, 1.8V, etc. CLK and DI provide control signals for data communication between the controller and the AM chip to transmit light control data. The light control data and the following address identifiers are written through communication protocols such as NetBEUI protocol. SW is used to control the switching of light control data (PWM data) of R channel, G channel and B channel, and cooperate with the switching of power supplies (VR power supply, VG power supply, VB power supply) of each channel of R channel, G channel and B channel to realize the three-color switching and lighting of the LED lamp. It should be noted that the relevant data flows from the light control channel CH to the LED lamp through the corresponding interface, display control, crystal oscillator and constant current source.

[0052] It can be seen that the AM chip of this optional embodiment outputs light control data that matches one of the target channels in the power-on state among the R channel, G channel, and B channel of the LED array through the light control channel of the AM chip, so that the LED array outputs the color light corresponding to the target channel, that is, the light control channel of the AM chip is shared by the R channel, G channel, and B channel of the LED array to transmit light control data, thereby controlling the display output of the LED array. While achieving the same effect as passively driven LEDs, the required number of AM chips is greatly reduced, the area of ​​the AM chip is effectively reduced, and the wiring is simple, which simplifies the stacking design of the PCB light board of the LED lamp. Even in the design of smaller pitch products, the devices can be placed neatly and orderly, reducing the driving and design costs of the LED lamp; and the AM chip driving architecture can also reduce the driving current and driving voltage, reduce the wiring loss, and achieve a reduction in the power consumption of the entire system, thereby reducing the occurrence of heating of the light board and the AM chip, and further improving the display brightness of the LED array.

[0053] In another optional embodiment, all AM chips are divided into at least one chipset, specifically, into rows or columns, and each chipset has a unique corresponding power supply, that is, the power supply is used to power all AM chips of the corresponding chipset; the method may further include the following steps: The controller determines a chipset that has not performed the address writing operation from all chipsets as the current chipset, performs a power-on operation on the power supply corresponding to the current chipset, and performs an address identification writing operation on all AM chips of the current chipset; After completing the address writing operation, the controller performs a locking operation on the address corresponding to the current chipset, and determines the next chipset from all chipsets other than the current chipset that have not performed the address writing operation; The controller updates the next chipset as the current chipset, and re-executes the above-mentioned steps of powering on the power supply corresponding to the current chipset, writing the address identifier to all AM chips of the current chipset, and locking the address corresponding to the current chipset after completing the address writing operation, until the address writing operation is completed for all chipsets; The address identifiers of all chipsets are different, and the address identifier corresponding to each chipset is used for the controller to write the corresponding light control pixel data. Further, the address identifiers of all AM chips in a chipset may be the same, different, or all the same.

[0054] In this optional embodiment, Figure 5 Schematic diagram of the LED array driver architecture corresponding to an AM chip disclosed in the present invention, such as Figure 5As shown, the AM chips are divided into 3 rows with each row as a group. The power supplies corresponding to the chipset in each row are VDD1, VDD2, and VDDm respectively, and each chip group in each row corresponds to multiple AM ​​chips. The AM chips in the same column of each row receive the same light control data D1, D2, D3, D4, and Dn from the controller. Each AM chip corresponds to an LED lamp. The R channel of each LED lamp shares the VR power supply, the R channel of each LED lamp shares the VG power supply, and the R channel of each LED lamp shares the VB power supply. The clock pin CLK and the channel switching switch SW of each AM chip are communicated with the controller to control the AM chip to output the light control data of the corresponding color to the corresponding LED lamp through the light control channel CH in a time-sharing manner to display an image of the corresponding color. Specifically, when the VR power supply is supplied, the channel switching switch SW of the AM chip connects its light control channel to the R channel of the LED lamp to output the light control data of the R channel; when the VG power supply is supplied, the channel switching switch SW of the AM chip connects its light control channel to the G channel of the LED lamp to output the light control data of the G channel; when the VB power supply is supplied, the channel switching switch SW of the AM chip connects its light control channel to the B channel of the LED lamp to output the light control data of the B channel.

[0055] In this optional embodiment, optionally, Figure 6 is a schematic diagram of a power-on control timing before writing address identification to the chip of each chipset disclosed in an embodiment of the present invention, such as Figure 6 As shown, the controller controls the power-on timing of each row of chipsets in a group, which are VDD1, VDD2, VDD3, and VDDm. For each row of chipsets, after controlling the VDD1 of the first row of chipsets to power on, the address (such as address 1-address N) is written through CLK and DI to initialize the address. After writing the address identifier, the address of the AM chip of the chipset in this row is locked, and the same operation is performed on the next row of chipsets until the address identifiers of all rows of chipsets are written. Among them, for address locking, different write instructions and address write enable registers are defined for the AM chip of each row of chipsets. After the chip address of each row is written, the address write function needs to be disabled to reduce the subsequent write address instructions that cause the previous chip address to be overwritten. And after writing the address, the corresponding channel data is written according to the corresponding address.

[0056] It can be seen that this optional embodiment writes addresses to the AM chip of each chipset in turn, so that the lighting control data can be written according to the address identifier later, and after writing the corresponding address identifier to the AM chip of each chipset, performs a locking operation on the address, thereby reducing the occurrence of subsequent write address instructions overwriting the address of the AM chip that has already been written, and further ensuring the accuracy and success of subsequent lighting control data writing; and only switches the analog signal VR power supply, VG power supply, VB power supply and VDD power supply, and the full-screen CLK and column data are shared, so that the overall control architecture of the AM chip is simple, and the timing control is flexible and simple, thereby improving the control flexibility of the LED lamp.

[0057] In yet another optional embodiment, the method may further include the following steps: The front end collects the current display color temperature corresponding to the LED array based on the brightness and color meter, and determines whether the current display color temperature corresponding to the LED array meets the predetermined color temperature condition; When it is determined that the conditions are not met, the front end generates a color temperature adjustment coefficient corresponding to the LED array according to the current display color temperature and color temperature conditions corresponding to the LED array, and sends the color temperature adjustment coefficient corresponding to the LED array to the control end. The color temperature adjustment coefficient corresponding to the LED array includes one or more of the color temperature adjustment coefficient of the R channel, the color temperature adjustment coefficient of the G channel, and the color temperature adjustment coefficient of the B channel. The control end receives the color temperature adjustment coefficient corresponding to the LED array, and sends the color temperature adjustment coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the color temperature of the LED array according to the color temperature adjustment coefficient corresponding to the LED array.

[0058] In this optional embodiment, optionally, the brightness and color meter can be integrated in the front end or can be independent of the front end. Optionally, if the current display color temperature is within the preset display color temperature range or within the preset display color temperature range and the duration is greater than or equal to the preset duration.

[0059] In this optional embodiment, specifically, the specific process of color temperature correction is: the AM chip multiplies the light control data by the color temperature adjustment coefficient to obtain the light control data after color temperature adjustment, and outputs it through the light control channel of the AM chip.

[0060] In this optional embodiment, when the display of the LED array meets the image display requirements and the grayscale display requirements and the display brightness is within the preset display brightness range, the display color temperature is adjusted to improve the efficiency and accuracy of the color temperature adjustment.

[0061] In this optional embodiment, if the current color temperature adjustment does not meet the color temperature condition, the current display color temperature of the LED array is collected again based on the brightness and chromaticity meter, and the color temperature adjustment is performed again until the color temperature condition is met.

[0062] It can be seen that when the display color temperature of the LED array does not meet the color temperature condition, this optional embodiment generates a corresponding color temperature adjustment coefficient through the color temperature condition and the current display color temperature, so that the AM chip can adjust the color temperature in combination with the lighting control data, thereby improving the efficiency and accuracy of the color temperature adjustment. While the LED array meets the corresponding color temperature condition, there is no need to add additional analog circuits and digital circuits, which further reduces the area of ​​the AM chip and reduces the design complexity of the AM chip, thereby further reducing the cost.

[0063] In yet another optional embodiment, the method may further include the following steps: The front end sends the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient to the control end, and the control end stores the power adjustment data, brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient in the storage space corresponding to the LED array; or, The front end determines the target correction coefficient corresponding to the LED array according to the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient, and sends the target correction coefficient corresponding to the LED array to the control end; the control end stores the power adjustment data and the target correction coefficient in the storage space corresponding to the LED array; The power adjustment data and the target correction coefficient serve as a basis for controlling the LED array when the LED array is subsequently powered on.

[0064] In this optional embodiment, optionally, the final correction data is determined based on the power adjustment data and the target correction coefficient, and stored in the above-mentioned storage space, wherein the above-mentioned storage space can be understood as the light board Flash corresponding to the LED array, or other storage space, such as the front-end storage space. At this time, when the power adjustment data and the target correction data are needed, they are directly obtained from the other storage space.

[0065] In this optional embodiment, when the control end is a receiving card, each time the lamp body corresponding to the LED array is powered on, the receiving card reads the corresponding data from the storage space and sends it to the controller, which then transmits it to the AM chip for display control of the LED array; when the control end is a controller, the controller directly obtains the corresponding data from the storage space and transmits it to the AM chip for display control of the LED array. Among them, the power adjustment data is preferentially read by the controller and sent to the AM chip.

[0066] It can be seen that this optional embodiment directly stores the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient in the storage space, or integrates the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient into the target correction coefficient and then stores it in the storage space, or multiplies the target correction coefficient with the power adjustment data and then stores it in the storage space, that is, provides multiple data storage methods to improve the flexibility of data storage; and by integrating the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient into the target correction coefficient and then storing it in the storage space, each time the lamp body is powered on, the receiving card or controller directly reads the target correction coefficient and the power adjustment data for a multiplication operation, or directly reads the final correction data after the multiplication of the two, without the need to perform multiple multiplication operations on multiple data, and reduces the amount of data, thereby improving the data transmission speed and reducing the resource shortage and cost and power consumption increase caused; and by reading the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient through the receiving card, the design complexity and design area of ​​the AM chip can be further reduced, and the cost is further reduced.

[0067] In another optional embodiment, the control end includes a controller or a receiving card; before the front end passes the first image of the image collector LED array, the method may further include the following steps: When the control end includes a controller, the control end obtains configuration parameters and performs configuration operations on the controller according to the configuration parameters; After the controller completes the configuration operation, the front end obtains the image displayed by the LED array and the image displayed by the front end, and determines whether the image displayed by the LED array and the image displayed by the front end match; When the result is yes, the front end generates a configuration parameter solidification prompt, and performs a solidification operation on the configuration parameters according to the configuration parameter solidification prompt: Among them, the front end performs solidification operations on the configuration parameters according to the configuration parameter solidification prompt, including: The front end sends a configuration parameter fixation prompt to the receiving card to trigger the receiving card to fix the configuration parameters in the receiving card; and / or The front end sends a configuration parameter solidification prompt to the controller to trigger the controller to solidify the configuration parameters in the controller.

[0068] In this optional embodiment, after the current configuration is completed, if the image displayed by the LED array does not match the image displayed on the front end, continue to adjust the configuration parameters and reconfigure the parameters until the image displayed by the LED array matches the image displayed on the front end.

[0069] In this optional embodiment, the configuration parameters include but are not limited to one or more of data transmission speed, number of I\O ports, and DATA / CLK timing.

[0070] In this optional embodiment, when the configuration parameters are fixed in the controller, each time the lamp body is powered on, the controller reads the configuration parameters to perform configuration initialization, and the front end can read the configuration parameters through the receiving card / controller; Figure 7 FIG. 1 is another flow chart of display correction for an LED array disclosed in an embodiment of the present invention, such as Figure 7 As shown, when the configuration parameters are fixed in the receiving card, each time the lamp body is powered on, the receiving card reads the configuration parameters and sends them to the controller, and then the controller performs configuration initialization according to the configuration parameters, and the front end can directly read the configuration parameters in the receiving card. It should be noted that, optionally, when the control end is a receiving card, when it receives data sent by the front end, it processes the received data or directly sends the data to the controller, and the controller then sends it to the AM chip.

[0071] In this optional embodiment, if Figure 7 As shown, after the configuration parameters are initialized, the screen is turned on, and the initial display brightness of the screen is captured by the camera. If the initial display brightness is within the preset display brightness range, the Trim data is adjusted to adjust the display effect of the LED array so that the image display of the LED array meets the image display requirements, and the Trim data at this time is saved, and then the Global brightness correction of the LED array is performed, and when the brightness meets the brightness requirements, the brightness correction coefficient at this time is saved, and then the image of the LED array is captured to generate the corresponding grayscale correction coefficient to perform full grayscale correction on the LED array, and after the correction effect is satisfied, the grayscale correction coefficient at this time is saved, and finally the current display color temperature corresponding to the LED array is collected and the corresponding color temperature correction coefficient is generated to correct the color temperature of the LED array, and the color temperature meets the corresponding color temperature condition, and the color temperature adjustment coefficient at this time is saved.

[0072] It can be seen that this optional embodiment adjusts the configuration parameters to ensure that the image displayed by the LED array matches the image displayed on the front end, which is beneficial to improving the accuracy and reliability of subsequent execution of various correction operations; and by solidifying the configuration parameters in the receiving card or controller, the solidification method of the configuration parameters is enriched, and the convenience of subsequent acquisition of the configuration parameters is improved; and if the configuration parameters are solidified in the controller, it can reduce the occurrence of re-solidification of the configuration parameters when the receiving card needs to be replaced.

[0073] Embodiment 2 See also Figure 8 , Figure 8 1 is a schematic diagram of a system for display correction of an LED array disclosed in an embodiment of the present invention. Figure 8The correction system described can be applied to any LCD display scene that requires display correction (such as movie watching scene and e-sports game scene), and the correction system includes a control end and a front end, wherein the control end and the front end are connected in communication, and the front end can be understood as any terminal that can collect images, collect brightness and analyze LED arrays, such as user equipment (such as computers, mobile phones), such as Figure 8 As shown, the front end includes a collection module 201, a generation module 202 and a first communication module 203, and the control end includes a second communication module 204 and a correction module 205: The acquisition module 201 is used to acquire a first image of the LED array through an image acquisition device after detecting that the image displayed by the LED array matches the image displayed by the front end; A generating module 202, configured to generate a correction coefficient according to pixels included in the first image; The first communication module 203 is used to send the correction coefficient to the control end, where the correction coefficient includes a grayscale correction coefficient of a first preset bit number (such as 8 bits); A second communication module 204, used to receive a correction coefficient; The correction module 205 is used to send the correction coefficient to the AM driver chip corresponding to the LED array. The correction coefficient is used for the AM driver chip corresponding to the LED array to correct the display effect of the LED array.

[0074] It can be seen that implementation Figure 8 The described system for display correction of the LED array detects that the image displayed by the LED array matches the image displayed by the front end (such as a computer), if the displayed content, direction and arrangement are exactly the same, the front end collects the first image of the LED array through the image collector, and generates a grayscale correction coefficient with the required number of bits based on the pixels contained in the first image, and sends it to the control end. The control end then sends the grayscale correction coefficient to the AM driver chip corresponding to the LED array, so that the AM driver chip can correct the display effect of the LED array according to the grayscale correction coefficient, so as to improve the uniformity of the low grayscale of the LED array image, make the picture display of the LED array clearer, and have a better visual effect.

[0075] In an optional embodiment, the generating module 202 is further configured to generate power adjustment data (such as current adjustment data or voltage adjustment data) of a second preset number of bits according to the pixels included in the first image before generating the correction coefficient according to the pixels included in the first image; The first communication module 203 is further used to send the power adjustment data of a second preset number of bits (such as 6 bits) to the control end; The second communication module 204 is further used to receive power adjustment data of a second preset number of bits; The correction module 205 is further used to send the power adjustment data of the second preset number of bits to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to adjust the display effect of the LED array according to the power adjustment data of the second preset number of bits; The acquisition module 201 is further used to acquire the second image of the calibrated LED array through an image acquisition device; like Fig. 9 As shown, Fig. 9 FIG. 1 is a schematic diagram of another system for performing display correction on an LED array disclosed in an embodiment of the present invention. Fig. 9 As shown, the front end also includes: A determination module 206, configured to determine a brightness adjustment effect of the LED array according to the second image and the first image; A first judgment module 207, used to judge whether the image display of the LED array meets the predetermined image display requirement according to the brightness adjustment effect of the LED array; The update module 208 is used to update the second image to the first image when the judgment result is no, and trigger the generation module 202 to re-execute the above-mentioned operation of generating the power adjustment data of the second preset bit number according to the pixels contained in the first image until the image display of the LED array meets the image display requirements.

[0076] It can be seen that implementation Fig. 9 The described system for display correction of the LED array first adjusts the channel current or channel voltage of the AM chip lighting drive to increase the channel current or channel voltage of the AM chip lighting drive, so that the display effect of the LED array meets the corresponding brightness display requirements, and then performs grayscale correction on the display of the LED array, which can further improve the grayscale correction efficiency and accuracy and reliability of the LED array display, thereby further improving the uniformity of the full grayscale including the low-level, and further improving the efficiency of obtaining the LED array display effect that meets the display requirements.

[0077] In another optional embodiment, the acquisition module 201 is further used to acquire the initial display brightness of the LED array through a brightness collector after detecting that the image displayed by the LED array matches the image displayed on the front end; The first judging module 207 is further used to judge whether the initial display brightness is within the preset display brightness range; when it is judged that it is within the preset display brightness range, the generating module 202 is triggered to perform the above-mentioned operation of generating the power adjustment data of the second preset number of bits according to the pixels included in the first image; In this optional embodiment, if Fig. 9As shown, the generating module 202 is further used to generate a brightness correction coefficient corresponding to the LED array according to the initial display brightness of the LED array when it is determined that the display brightness is not within the preset display brightness range; The first communication module 203 is also used to send the brightness correction coefficient corresponding to the LED array to the control end; The second communication module 204 is also used to receive the brightness correction coefficient corresponding to the LED array; The correction module 205 is also used to send the brightness correction coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the brightness effect of the LED array according to the brightness correction data, until the display brightness of the LED array is within the preset display brightness range, and trigger the generation module 202 to perform the above-mentioned operation of generating the second preset bit number of power adjustment data according to the pixels contained in the first image.

[0078] It can be seen that implementation Fig. 9 The described system for display correction of the LED array first reduces the display brightness of the LED array to an appropriate level if the LED array is overexposed when initially lit, and then adjusts the channel current or channel voltage of the AM chip's lighting drive, so as to reduce the situation where multiple adjustments are required to achieve the desired display effect due to direct adjustment of the channel current or channel voltage due to initial lighting overexposure, thereby facilitating improving the accuracy and efficiency of adjusting the channel current or channel voltage, and further facilitating further improving the efficiency of the LED array in achieving a satisfactory display effect.

[0079] In yet another optional embodiment, the acquisition module 201 is further used to acquire the current display color temperature corresponding to the LED array based on the brightness and chromaticity meter; like Fig. 9 As shown, the front end also includes: The second judgment module 209 is used to judge whether the current display color temperature corresponding to the LED array meets the predetermined color temperature condition; The generating module 202 is further used to generate a color temperature adjustment coefficient corresponding to the LED array according to the current display color temperature and color temperature conditions corresponding to the LED array when it is determined that the conditions are not met; The first communication module 203 is further used to send the color temperature adjustment coefficient corresponding to the LED array to the control end, where the color temperature adjustment coefficient corresponding to the LED array includes one or more of the color temperature adjustment coefficient of the R channel, the color temperature adjustment coefficient of the G channel and the color temperature adjustment coefficient of the B channel; The second communication module 204 is also used to receive the color temperature adjustment coefficient corresponding to the LED array; The correction module 205 is further used to send the color temperature adjustment coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the color temperature of the LED array according to the color temperature adjustment coefficient corresponding to the LED array.

[0080] It can be seen that implementation Fig. 9 The described system for display correction of the LED array generates a corresponding color temperature adjustment coefficient based on the color temperature condition and the current display color temperature when the display color temperature of the LED array does not meet the color temperature condition, so that the AM chip can adjust the color temperature in combination with the lighting control data, thereby improving the efficiency and accuracy of the color temperature adjustment. When the LED array meets the corresponding color temperature condition, there is no need to add additional analog circuits and digital circuits, which further reduces the area of ​​the AM chip and reduces the design complexity of the AM chip, thereby further reducing the cost.

[0081] In another optional embodiment, the first communication module 203 is further used to send the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient to the control end; the second communication module 204 is further used to store the power adjustment data, the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient in the storage space corresponding to the LED array; or, The first communication module 203 is further used to determine the target correction coefficient corresponding to the LED array according to the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient, and send the target correction coefficient corresponding to the LED array to the control end; the second communication module 204 is further used to store the power adjustment data and the target correction coefficient in the storage space corresponding to the LED array; The power adjustment data and the target correction coefficient serve as a basis for controlling the LED array when the LED array is subsequently powered on.

[0082] It can be seen that implementation Fig. 9The described system for display correction of LED array directly stores the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient in the storage space, or integrates the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient into the target correction coefficient and then stores it in the storage space, or multiplies the target correction coefficient with the power adjustment data and then stores it in the storage space, that is, provides multiple data storage methods and improves the flexibility of data storage; and by integrating the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient into the target correction coefficient and then storing it in the storage space, each time the lamp body is powered on, the receiving card or controller directly reads the target correction coefficient and the power adjustment data for a multiplication operation, or directly reads the final correction data after the multiplication of the two, without multiple multiplication operations on multiple data, and reduces the amount of data, thereby improving the data transmission speed and reducing the resource shortage and cost and power consumption increase caused; and by reading the brightness correction coefficient, grayscale correction coefficient and color temperature adjustment coefficient by the receiving card, the design complexity and design area of ​​the AM chip can be further reduced, and the cost is further reduced.

[0083] In yet another optional embodiment, the control end includes a controller or a receiving card; the control end is further used to obtain configuration parameters before the first image passes through the LED array of the image collector at the front end, and when the control end includes a controller, and perform configuration operations on the controller according to the configuration parameters; The acquisition module 201 is also used to obtain the image displayed by the LED array and the image displayed by the front end after the controller completes the configuration operation, and determine whether the image displayed by the LED array and the image displayed by the front end match; The generating module 202 is further used to generate a configuration parameter solidification prompt when the judgment result is yes, and perform a solidification operation on the configuration parameter according to the configuration parameter solidification prompt: The specific manner in which the generation module 202 performs the solidification operation on the configuration parameters according to the configuration parameter solidification prompt includes: Sending a configuration parameter fixation prompt to the receiving card to trigger the receiving card to fix the configuration parameters in the receiving card; and / or Send a configuration parameter solidification prompt to the controller to trigger the controller to solidify the configuration parameters in the controller.

[0084] It can be seen that implementation Fig. 9The described system for display correction of the LED array adjusts the configuration parameters to ensure that the image displayed by the LED array matches the image displayed by the front end, which is beneficial to improving the accuracy and reliability of subsequent execution of various correction operations; and by solidifying the configuration parameters in a receiving card or a controller, the solidification method of the configuration parameters is enriched, and the convenience of subsequent acquisition of the configuration parameters is improved; and if the configuration parameters are solidified in the controller, the occurrence of re-solidification of the configuration parameters when the receiving card needs to be replaced can be reduced.

[0085] Embodiment 3 See also Fig.10 , Fig.10 is a structural diagram of another system for display correction of an LED array disclosed in an embodiment of the present invention. Fig.10 The correction system described may include: A memory 301 storing executable program codes; A front end 302 and a control end 303 coupled to the memory 301, wherein the front end 302 and the control end 303 are in communication connection with each other; Furthermore, it may also include an input interface 304 and an output interface 305 coupled to the front end 302 and the control end 303; Among them, the front end 302 calls the executable program code stored in the memory 301 to execute the steps corresponding to the front end in the method for display correction of the LED array disclosed in Example 1 of the present invention; the control end 303 calls the executable program code stored in the memory 301 to execute the steps corresponding to the control end in the method for display correction of the LED array disclosed in Example 1 of the present invention.

[0086] Embodiment 4 The embodiment of the present invention discloses a computer storage medium, which stores computer instructions. When the computer instructions are called, they are used to execute some or all of the steps in the method for display correction of an LED array disclosed in the first embodiment of the present invention.

[0087] The device embodiments described above are only illustrative, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, i.e., they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative work.

[0088] Through the specific description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on such an understanding, the above technical solution can be essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, and the storage medium includes a read-only memory (ROM), a random access memory (RAM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), a one-time programmable read-only memory (OTPROM), an electronically erasable rewritable read-only memory (EEPROM), a compact disc (CD-ROM) or other optical disc storage, magnetic disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0089] Finally, it should be noted that the method and system for display correction of an LED array disclosed in the embodiments of the present invention disclose only the preferred embodiments of the present invention, which are only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for display correction of an LED array, characterized in that: The method is applied to a lighting calibration system, wherein the lighting calibration system comprises a control end and a front end, wherein the control end and the front end are in communication connection with each other, and the method comprises: After detecting that the image displayed by the LED array matches the image displayed by the front end, the front end acquires a first image of the LED array through an image collector, generates a correction coefficient according to pixels included in the first image, and sends the correction coefficient to the control end, wherein the correction coefficient includes a grayscale correction coefficient of a first preset bit number; The control end receives the correction coefficient and sends the correction coefficient to the AM driver chip corresponding to the LED array. The correction coefficient is used for the AM driver chip corresponding to the LED array to correct the display effect of the LED array.

2. The method for display correction of an LED array according to claim 1, characterized in that: Before the front end generates the correction coefficient according to the pixels included in the first image, the method further includes: The front end generates power adjustment data of a second preset number of bits according to the pixels included in the first image, and sends the power adjustment data of the second preset number of bits to the control end; The control end receives the power adjustment data of the second preset bit number, and sends the power adjustment data of the second preset bit number to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to adjust the display effect of the LED array according to the power adjustment data of the second preset bit number; The front end acquires a second image of the calibrated LED array through the image collector, and determines a brightness adjustment effect of the LED array according to the second image and the first image; The front end determines whether the image display of the LED array meets the predetermined image display requirement according to the brightness adjustment effect of the LED array; When the result is judged to be negative, the front end updates the second image to the first image, and re-executes the operation of generating power adjustment data of a second preset bit number according to the pixels contained in the first image, until the image display of the LED array meets the image display requirements.

3. The method for display correction of an LED array according to claim 2, characterized in that: After detecting that the image displayed by the LED array matches the image displayed by the front end, the method further includes: The front end collects the initial display brightness of the LED array through a brightness collector, and determines whether the initial display brightness is within a preset display brightness range; When it is determined that the display brightness is within the preset display brightness range, the front end triggers the operation of generating power adjustment data of a second preset bit number according to the pixels included in the first image.

4. The method for display calibration of an LED array according to claim 3, characterized in that: The method further comprises: When it is determined that the display brightness is not within the preset display brightness range, the front end generates a brightness correction coefficient corresponding to the LED array according to the initial display brightness of the LED array, and sends the brightness correction coefficient corresponding to the LED array to the control end; The control end receives the brightness correction coefficient corresponding to the LED array, and sends the brightness correction coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the brightness effect of the LED array according to the brightness correction data, until the display brightness of the LED array is within the preset display brightness range, and trigger the execution of the operation of generating a second preset bit number of power adjustment data according to the pixels contained in the first image.

5. The method for display correction of an LED array according to claim 4, characterized in that: The method further comprises: The front end collects the current display color temperature corresponding to the LED array based on the brightness and chromaticity meter, and determines whether the current display color temperature corresponding to the LED array meets the predetermined color temperature condition; When it is determined that the condition is not satisfied, the front end generates a color temperature adjustment coefficient corresponding to the LED array according to the current display color temperature corresponding to the LED array and the color temperature condition, and sends the color temperature adjustment coefficient corresponding to the LED array to the control end, wherein the color temperature adjustment coefficient corresponding to the LED array includes one or more of an R channel color temperature adjustment coefficient, a G channel color temperature adjustment coefficient, and a B channel color temperature adjustment coefficient; The control end receives the color temperature adjustment coefficient corresponding to the LED array, and sends the color temperature adjustment coefficient corresponding to the LED array to the AM driver chip corresponding to the LED array, so as to trigger the AM driver chip corresponding to the LED array to correct the color temperature of the LED array according to the color temperature adjustment coefficient corresponding to the LED array.

6. The method for display correction of an LED array according to claim 5, characterized in that: The method further comprises: The front end sends the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient to the control end, and the control end stores the power adjustment data, the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient in the storage space corresponding to the LED array; or The front end determines the target correction coefficient corresponding to the LED array according to the brightness correction coefficient, the grayscale correction coefficient and the color temperature adjustment coefficient, and sends the target correction coefficient corresponding to the LED array to the control end; the control end stores the power adjustment data and the target correction coefficient in the storage space corresponding to the LED array; The power adjustment data and the target correction coefficient serve as a basis for controlling the LED array when the LED array is subsequently powered on.

7. The method for display calibration of an LED array according to any one of claims 1 to 4 and 6, characterized in that: The control end includes a controller or a receiving card; Before the front end passes the first image of the LED array through the image collector, the method further includes: When the control end includes the controller, the control end obtains configuration parameters and performs configuration operations on the controller according to the configuration parameters; After the controller completes the configuration operation, the front end obtains the image displayed by the LED array and the image displayed by the front end, and determines whether the image displayed by the LED array and the image displayed by the front end are consistent; When the result of the judgment is yes, the front end generates a configuration parameter solidification prompt, and performs a solidification operation on the configuration parameter according to the configuration parameter solidification prompt: The front end performs a curing operation on the configuration parameters according to the configuration parameter curing prompt, including: The front end sends the configuration parameter fixing prompt to the receiving card to trigger the receiving card to fix the configuration parameter in the receiving card; and / or The front end sends the configuration parameter fixing prompt to the controller to trigger the controller to fix the configuration parameters in the controller.

8. A system for display correction of an LED array, characterized in that: The system includes a control end and a front end, the control end and the front end are connected in communication, the front end includes a collection module, a generation module and a first communication module, and the control end includes a second communication module and a correction module, wherein: The acquisition module is used to acquire a first image of the LED array through an image acquisition device after detecting that the image displayed by the LED array matches the image displayed by the front end; The generating module is used to generate a correction coefficient according to the pixels included in the first image; The first communication module is used to send the correction coefficient to the control end, wherein the correction coefficient includes a grayscale correction coefficient of a first preset bit number; The second communication module is used to receive the correction coefficient; The correction module is used to send the correction coefficient to the AM driver chip corresponding to the LED array, and the correction coefficient is used for the AM driver chip corresponding to the LED array to correct the display effect of the LED array.

9. A system for display correction of an LED array, characterized in that: The correction system comprises: A memory storing executable program code; A front end and a control end coupled to the memory, wherein the front end and the control end are connected to each other; The front end calls the executable program code stored in the memory to execute the steps corresponding to the front end in the method for display correction of an LED array as described in any one of claims 1 to 7; the control end calls the executable program code stored in the memory to execute the steps corresponding to the control end in the method for display correction of an LED array as described in any one of claims 1 to 7.

10. A computer storage medium, characterized in that: The computer storage medium stores computer instructions, and when the computer instructions are called, they are used to execute the method for display correction of the LED array according to any one of claims 1 to 7.

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