Backlight source adjusting method and system and computer readable medium

Abstract

The embodiment of the invention provides a backlight source adjusting method and system and a computer readable medium, and the backlight source adjusting method comprises the steps: S1, obtaining a set brightness value of a backlight source; s3, determining a preset driving current corresponding to the set brightness value; step S5, determining a target brightness value according to a comparison result of the set brightness value and an actually measured brightness value of the backlight source, specifically comprising: S51, determining a first current according to a preset driving current; s53, acquiring an actually measured brightness value of the backlight source based on the first current; s55, performing differencing processing on the basis of the actually measured brightness value and the set brightness value to obtain a first difference value, and comparing the actually measured brightness value with the set brightness value; s57, determining that the actually measured brightness value is a target brightness value when a comparison result meets a preset condition, otherwise, adjusting the preset driving current and returning to the step S51; and S7, determining a target write-in current according to the first current corresponding to the target brightness value. According to the embodiment of the invention, stable and reliable brightness of the backlight source can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display, and particularly to a backlight adjustment method, a system and a computer-readable medium. Background Art

[0002] With the increasing requirements of consumers for the image quality, energy efficiency and color of display panels, the development of backlight technology has continuously promoted the improvement and update of the performance of LCD (Liquid Crystal Display) liquid crystal displays. To produce a display panel with excellent image quality and color uniformity, a backlight with stable brightness in the production factory is indispensable.

[0003] For current panel factories, the backlights used in the factory are statically dimmed. During the actual production of display panels, due to the influence of the external environment and long-term lighting, the brightness of the backlight will become brighter or darker. It is necessary for the maintenance personnel of the production line equipment to regularly monitor and adjust the brightness of the backlight, which brings unnecessary work pressure and trouble to the equipment maintenance personnel. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, an embodiment of the present invention provides a backlight adjustment method, a system and a computer-readable medium, which can automatically adjust the brightness of the backlight, reduce the pressure on the equipment maintenance personnel for daily backlight monitoring work, and ensure that the backlight is more stable and reliable.

[0005] Specifically, on the one hand, an embodiment of the present invention discloses a backlight adjustment method, including: Step S1: Obtain the set brightness value of the backlight; Step S3: Determine the preset drive current corresponding to the set brightness value; Step S5: Determine the target brightness value according to the comparison result between the set brightness value and the measured brightness value of the backlight, specifically including: S51: Determine the first current according to the preset drive current; S53: Obtain the measured brightness value of the backlight based on the first current; S55: Perform a difference operation on the measured brightness value and the set brightness value to obtain a first difference, and compare the measured brightness value with the set brightness value; S57: When the comparison result meets the preset condition, determine the measured brightness value as the target brightness value, otherwise adjust the preset drive current and return to step S51; Step S7: Determine the target write current according to the first current corresponding to the target brightness value.

[0006] In some embodiments, the preset driving current includes a maximum current and a minimum current; step S51 specifically includes: taking the arithmetic mean of the maximum current and the minimum current as the first current; step S57 specifically includes: when the comparison result does not meet the preset condition and the first difference is greater than 0, taking the first current corresponding to the measured brightness value as the maximum current; when the difference comparison result does not meet the preset condition and the first difference is less than 0, taking the first current corresponding to the measured brightness value as the minimum current.

[0007] In some embodiments, it further includes step S2: obtaining the architecture type of the target test panel, and determining compensation data according to the architecture type; the compensation data includes a compensation current value and / or a compensation brightness value.

[0008] In some embodiments, step S53 specifically includes: obtaining the measured brightness value when driving the backlight source with the first current; or, when the compensation data includes a compensation current value, step S53 specifically includes: taking the sum of the first current and the compensation current value as the test writing current; obtaining the measured brightness value when driving the backlight source with the test writing current.

[0009] In some embodiments, step S55 specifically includes: taking the difference between the measured brightness value and the set brightness value as the first difference; or, when the compensation data includes a compensation brightness value, step S55 specifically includes: after obtaining the sum of the measured brightness value and the compensation brightness value as the first sum value, then taking the difference between the first sum value and the set brightness value to obtain the first difference.

[0010] In some embodiments, step S53 specifically includes: obtaining a plurality of brightness values corresponding to a plurality of brightness sensors of the backlight source based on the first current, and taking the arithmetic mean of the plurality of brightness values as the measured brightness value.

[0011] In some embodiments, it further includes step S4: respectively obtaining the measured maximum brightness value when driving the backlight source with the maximum current and the measured minimum brightness value when driving the backlight source with the minimum current.

[0012] An embodiment of the present invention also provides a backlight source adjustment system, which is characterized in that it includes: a processor and a memory, the memory stores instructions executed by the processor, and the instructions enable the processor to perform operations to carry out the backlight source adjustment method of any one of the foregoing.

[0013] An embodiment of the present invention also provides a backlight source adjustment system, including: a backlight module, on which a backlight source and a brightness sensor are arranged, and the brightness sensor is used to collect the brightness of the backlight source; a driving module, electrically connected to the brightness sensor and the backlight source respectively, and the adjustment driving is used to execute the backlight source adjustment method of any one of the foregoing.

[0014] An embodiment of the present invention also provides a computer-readable medium. The computer-readable medium stores computer-readable instructions, and the computer-readable instructions include instructions for executing any of the foregoing backlight adjustment methods.

[0015] The above embodiments of the present invention have at least the following beneficial effects: During the production and testing process of the display panel, the target writing current of the backlight module can be automatically determined according to the set brightness value, so as to basically adjust the actual brightness of the backlight source to the set brightness value, ensure a stable and reliable backlight source, avoid affecting the debugging effect of the display panel due to the change of the backlight source brightness over time or temperature, and reduce the daily backlight monitoring work pressure of equipment maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a flowchart of a backlight adjustment method provided by an embodiment of the present invention.

[0018] Figure 2 It is a flowchart of a backlight adjustment method provided by a specific embodiment of the present invention.

[0019] Figure 3 It is a flowchart of a backlight adjustment method provided by another specific embodiment of the present invention.

[0020] Figure 4 It is a schematic structural diagram of a backlight adjustment system provided by an embodiment of the present invention.

[0021] Figure 5 It is a schematic diagram showing the change of the backlight brightness over time without using the backlight adjustment method provided by the embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram showing the change of the backlight brightness over time using the backlight adjustment method provided by the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0024] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0027] The backlight module is an important component structure of the LCD display panel and also an important facility in the production and detection process of the display panel. For example, during the production of the display panel, processes such as Auto Gamma debugging or Demura process are required, and at this time, a stable backlight source needs to be provided. However, in the backlight module, generally, a constant current source mode is used to drive the LED lamp beads. As the LED is lit for a long time, the LED itself will undergo light decay, resulting in a decrease in the brightness of the backlight source. The change in the temperature of the lamp beads will also cause the brightness of the lamp beads to change. Therefore, during the production of traditional display panels, due to the unstable brightness of the backlight module not meeting the requirements, some picture detections may be missed, and the Auto Gamma debugging or Demura process may not achieve the expected effect.

[0028] Therefore, referring to Figure 1 , the embodiments of the present invention provide a backlight adjustment method, including steps S1 to S7. Specifically as follows:

[0029] Step S1: Obtain the set brightness value of the backlight source;

[0030] Step S3: Determine the preset drive current corresponding to the set brightness value;

[0031] Step S5: Determine the target brightness value according to the comparison result between the set brightness value and the measured brightness value of the backlight source;

[0032] Step S7: Determine the target write current according to the first current corresponding to the target brightness value.

[0033] Among them, step S5 specifically includes:

[0034] S51: Determine a first current according to a preset drive current;

[0035] S53: Obtain the measured brightness value of the backlight based on the first current;

[0036] S55: Perform a difference operation on the measured brightness value and the set brightness value to obtain a first difference, and compare the measured brightness value with the set brightness value;

[0037] S57: When the comparison result meets a preset condition, determine the measured brightness value as the target brightness value; otherwise, adjust the preset drive current and return to step S51.

[0038] The above backlight adjustment method can be applied to a backlight adjustment system. Refer to Figure 4 A backlight adjustment system provided by an embodiment of the present invention includes: a drive module 10 and a backlight module 20. A backlight 21 and a brightness sensor 22 are provided on the backlight module 20, and the brightness sensor 22 is used to collect the brightness of the backlight 21. The drive module 10 is electrically connected to the brightness sensor 22 and the backlight 21 respectively, and the drive module 10 is used to execute the foregoing backlight adjustment method, that is, the foregoing steps S1 to S7.

[0039] Specifically, the backlight 21 is the light-emitting light source in the backlight module 20, and specifically may include a plurality of LED lamp beads or LED light bars. The brightness sensor 22 is specifically a photoelectric sensor, which is used to sense the light emitted by the backlight 21 and convert the light signal into an analog signal (analog voltage). The number of the brightness sensors 22 may be one or more. When there is one brightness sensor 22, for example, it may be set in the central area of the backlight module 20. When there are multiple brightness sensors 22, they may be evenly arranged according to the area of the backlight module 20. An operational amplifier is also provided between the brightness sensor 22 and the drive module 10, which can amplify the analog signal for subsequent processing. For example, the model of the operational amplifier may be LM358.

[0040] The drive module 10 is, for example, an MCU (Microcontroller Unit), and specifically, the STM32F1 or F4 series can be selected. It includes an ADC (Analog-to-Digital Converter) conversion circuit, which can convert the analog voltage into a digital signal. Alternatively, an ADC conversion circuit chip can also be separately provided between the brightness sensor 22 and the drive module 10. For example, ADC0832 can be selected. In this embodiment, the drive module 10 can receive the signal fed back by the brightness sensor 22 and process it to obtain the brightness value of the backlight 21 in the backlight module 10.

[0041] Specifically, in some embodiments, the backlight adjustment system further includes a host computer 30, which can be a PC computer. The host computer 30 can communicate with the driving module 10 via a network cable or USB.

[0042] The set brightness value in step S1 can be obtained through the host computer 30. The set brightness value (denoted as lightset) is the brightness value that meets the requirements of the panel production debugging process and is set according to actual debugging needs. For example, the set brightness value is set to 320 nits (nit), and generally, the set brightness value can be selected between 290 and 350 nits.

[0043] The preset driving current in step S3 is the driving current that may enable the backlight 21 in the backlight module 20 to reach the set brightness value. The preset driving current can be multiple current values or a current range, which can be confirmed according to experience. For example, it can be selected according to the brightness and driving current comparison table stored in the driving module 10 or the host computer 30, or can be input by the staff in the host computer 30.

[0044] Due to the influence of factors such as temperature and lighting duration, when actually driving the backlight 21 with the preset driving current directly based on experience values, there may be a large difference between the actual brightness of the backlight 21 in the backlight module 20 and the set brightness value. Therefore, it is currently impossible to directly determine how much driving current is required to make the backlight 21 reach the set brightness value, and directly adjusting the preset driving current according to experience values cannot ensure that the brightness of the backlight 21 is accurately adjusted to the set brightness value. Therefore, this embodiment also provides steps S5 to S7. The preset condition in step S57 is used to judge the difference between the measured brightness value and the set brightness value. For example, the preset condition is that the difference between the measured brightness value and the set brightness value is not greater than 5 nits. In this embodiment, by comparing the set brightness value with the measured brightness value, when the comparison result meets the preset condition, that is, when the difference between the two is small, it can be considered that the measured brightness value is basically equal to the set brightness value. At this time, the corresponding target writing current can be determined according to the measured brightness value. When the comparison result does not meet the preset condition, that is, when the difference between the two is still large, the preset driving current needs to be adjusted to obtain a more appropriate driving current until the difference between the measured brightness value when driving the backlight 21 with the corresponding current and the set brightness value is small, and then the corresponding target writing current is determined according to the current measured brightness value.

[0045] After step S7, for example, it further includes step S8: driving the backlight 21 with the target writing current, so that the actual brightness of the backlight 21 driven based on the target writing current basically reaches the required brightness. After step S8, the measured brightness value when driving the backlight 21 with the target writing current can be obtained and sent to the host computer 30 for storage or display by the host computer 30, so as to facilitate the operator to record.

[0046] Therefore, through the backlight adjustment method or the backlight adjustment system provided by the above embodiments of the present invention, during the production and testing process of the display panel, the target writing current of the backlight module can be automatically determined according to the set brightness value, so as to basically adjust the actual brightness of the backlight 21 to the set brightness value, ensure a stable and reliable backlight 21, avoid affecting the debugging effect of the display panel due to the change of the backlight 21 brightness over time or temperature, and reduce the daily work pressure of equipment maintenance personnel for backlight monitoring.

[0047] Specifically, in step S51, a current value can be selected from multiple current values or a current range of the preset driving current as the first current. In a specific embodiment, the preset driving current includes a maximum current (denoted as IC_max) and a minimum current (denoted as IC_min). Step S51 specifically includes: taking the arithmetic mean of the maximum current and the minimum current as the first current. Denote the first current as Write A, that is, in step S51, it is determined that Write A = (IC_max + IC_min) / 2.

[0048] In some embodiments, when the number of brightness sensors 22 is multiple, step S53 specifically includes: obtaining multiple brightness values corresponding to the multiple-channel brightness sensors based on the first current of the backlight, and taking the arithmetic mean of the multiple brightness values as the measured brightness value. For example, when the number of brightness sensors 22 is n, the driving module 10 converts and processes the signals respectively collected by the n brightness sensors 22 into n brightness values, denoted as light_1 to light_n respectively. Denote the measured brightness value obtained in step S53 as light A, then light A = (light_1 + light_2 + light_3 +...... + light_n) / n.

[0049] In some embodiments, step S53 specifically includes S531: obtaining the measured brightness value when driving the backlight with the first current. Specifically, for example, the driving module 10 writes the first current Write A into the current driving management IC register, drives the backlight 21 with the first current, the brightness sensor 22 collects the brightness of the backlight 21 at this time and feeds back the value to the driving module 10, and the driving module 10 performs conversion calculation to obtain the measured brightness value.

[0050] In some embodiments, before step S53, for example, it includes step S2: obtaining the architecture type of the target test panel, and determining compensation data according to the architecture type; the compensation data includes a compensation current value and / or a compensation brightness value. The compensation current value is denoted as Write B, and the compensation brightness value is denoted as offset. After the display panel is shipped from the factory to the customer, it will be produced into different display products (such as televisions, mobile phones, computers, etc.) according to different customer designs and has different working environments, and its transmittance will also vary. Therefore, in this embodiment, the architecture type of the target test panel is also obtained to determine the compensation data so that the backlight can be adjusted to adapt to the tests of display panels with different architectures. For example, a table of architecture type-compensation data relationship (the form of which can refer to Table 1) can be pre-stored in the driving module 10. The driving module 10 can obtain the architecture type selected or input by the staff on the host computer 30 and read the table of architecture type-compensation data relationship to determine the corresponding compensation data. Referring to Table 1, for example, in step S53, when the target test panel is CV320H1T01, the compensation current value is confirmed as Wirte_B1 according to the table of architecture type-compensation data relationship. For example, in step S53, when the target test panel is CV50U2L01, the compensation brightness value is confirmed as NITS_3 according to the table of architecture type-compensation data relationship.

[0051] Table 1:

[0052] Architecture type CV320H1T01 CV50U1L01 CV50U2L01 CV85U1T01 CV100U1T01 Wirte B(MA) Wirte_B1 Wirte_B2 Wirte_B3 Wirte_B4 Wirte_B5 off set(nits) NITS_1 NITS_2 NITS_3 NITS_4 NITS_5

[0053] Based on the above step S2, in some embodiments, step S53 specifically includes S532: using the sum of the first current and the compensation current value as the test write current; obtaining the measured brightness value when driving the backlight with the test write current. Specifically, Write A + Write B is written into the current drive management IC register, the backlight 21 is driven with Write A + Write B, the brightness sensor 22 collects the brightness of the backlight 21 at this time and feeds back the value to the driving module 10, and the driving module 10 performs conversion calculations to obtain the measured brightness value.

[0054] In some embodiments, step S55 specifically includes S551: using the difference between the measured brightness value and the set brightness value as the first difference. The first difference is denoted as X, that is, X = light A - light set. Or based on the foregoing step S2, step S55 specifically includes S552: after summing the measured brightness value and the compensation brightness value to obtain a first sum value, then taking the difference between the first sum value and the set brightness value to obtain a first difference. That is, X = (light A + offset) - light set.

[0055] Among them, by combining step S2 with step S532 or step S552, current compensation or brightness compensation can be achieved for the target panel to be tested with different architecture types, which can improve the versatility and adaptability of the backlight adjustment method and the backlight adjustment system.

[0056] Preferably, if it is necessary to adapt to target panels to be tested with different architecture types, when step S53 selects to execute step S532, step S55 selects to execute step S551; then in step S7, the sum of the first current corresponding to the target brightness value and the compensation brightness value is determined as the target write current. When step S53 selects to execute step S531, step S55 selects to execute step S552, then in step S7, the first current corresponding to the target brightness value is determined as the target write current. Or in some embodiments, when there is only one architecture type for the target panel to be tested, or in scenarios with low requirements for adaptability, it can also be that step S53 selects to execute step S531, and step S55 selects to execute S551.

[0057] In some embodiments, S57 specifically includes: when the comparison result does not meet the preset condition and the first difference is greater than 0, the first current corresponding to the measured brightness value is used as the maximum current; when the difference comparison result does not meet the preset condition and the first difference is less than 0, the first current corresponding to the measured brightness value is used as the minimum current. For example, the preset condition is that the absolute value of X is less than or equal to 5nits. Then when |X| ≤ 5nits, light A at this time can be determined as the target brightness value; then step S7 is performed. When |X| > 5nits and X > 0, Write A can be used as the new IC_max, then when step S51 is performed next time, the new first current is denoted as Write A’, and Write A’ = (Write A + IC_min) / 2. When |X| > 5nits and X < 0, Write A can be used as the new IC_min, then when step S51 is performed next time, the new first current is denoted as Write A’, and Write A’ = (Write A + IC_max) / 2. Through the above embodiments, the dichotomy method can be used to quickly determine the measured brightness value closest to the set brightness value as the target brightness value.

[0058] In some embodiments, the backlight dimming method further includes step S4: respectively obtaining the measured maximum brightness value when driving the backlight with the maximum current and the measured minimum brightness value when driving the backlight with the minimum current. Denote the measured maximum brightness value as light_max and the measured minimum brightness value as light_min. Where light_min < light_set < light_max. The measured maximum brightness value and the measured minimum brightness value can be used to verify whether the selection of the preset driving current is appropriate, or can be stored and used as a reference for selecting the preset driving current for other set brightness values.

[0059] The following respectively combines Figure 2 and Figure 3 to illustrate the principles and processes of two specific embodiments of the backlight adjustment method provided by the present invention.

[0060] (1) Refer to Figure 2 , first perform step S1 to obtain the set brightness value light_set of the backlight; then execute step S3 to determine IC_max and IC_min corresponding to the set brightness value light_set; step S2 can be executed before, after or synchronously with step S3, as long as it is performed before step S3. In step S2, obtain the architecture type of the target test panel and determine the compensation current value Wirte B. Then in steps S51 and S53, obtain the measured brightness value light_A when driving the backlight 21 with (IC_max + IC_min) / 2 + Wirte B (that is, Write A + Wirte B). In step S55, when the difference between light_A and light_set does not meet the preset condition, compare the magnitudes of light_A and light_set. When light_A - lght_set > 0, use the current round of writeA as the new IC_max and then continue to loop through the aforementioned steps S51 to S55; when light_A - lght_set < 0, use the current round of writeA as the new IC_min and then continue to loop through the aforementioned steps S51 to S55; until the difference between light_A and light_set meets the preset condition to end the loop, determine the current light_A as the target brightness value, and determine Wirte A + Wirte B corresponding to light_A as the target write current.

[0061] (2) Refer to Figure 3, first, perform step S1 to obtain the set brightness value light_set of the backlight source; next, execute step S3 to determine IC_max and IC_min corresponding to the set brightness value light_set; step S2 can be executed before step S3, after step S3, or synchronously. In step S2, obtain the architecture type of the target test panel and determine the compensation brightness value offset. Then, in steps S51 and S53, obtain the measured brightness value light_A when driving the backlight source 21 with (IC_max + IC_min) / 2 (i.e., Write A). In step S55, when the difference between (light_A + offset) and light_set does not meet the preset condition, compare the magnitudes of (light_A + offset) and light_set. When (light_A + offset) - light_set > 0, use the current round's writeA as the new IC_max and then continue to loop through the aforementioned steps S51 to S55; when (light_A + offset) - light_set < 0, use the current round's writeA as the new IC_min and then continue to loop through the aforementioned steps S51 to S55; continue looping until the difference between (light_A + offset) and light_set meets the preset condition to end the loop. Determine the light_A at this time as the target brightness value, and determine the Wire A corresponding to light_A as the target write current.

[0062] Refer to Figure 5 , which is a data graph showing the change in the brightness of the backlight module over time without using the backlight source adjustment method provided by the embodiments of the present invention. The brightness of the backlight source gradually decays over time. Refer to Figure 6 , which is a data graph showing the change in the brightness of the backlight module over time using the backlight source adjustment method provided by the embodiments of the present invention. It can be seen that the brightness is basically maintained unchanged, and a stable and required brightness can be ensured.

[0063] The backlight source adjustment method provided by the above embodiments of the present invention can be performed regularly according to the production line rules or when the panel type on the production line changes.

[0064] The backlight adjustment method provided in the above embodiments of the present invention can also be applied to a display or an electronic product with an LCD display screen. Specifically, after the panel factory has completed production debugging, the panel will be sold to downstream manufacturers, who will equip the panel with a backlight module according to the characteristics of their products. Then, the backlight adjustment method provided in the above embodiments of the present invention can also be used to adjust the backlight module of the display or electronic product to ensure that the backlight can maintain a stable brightness when the user uses it. At this time, the set brightness value, preset drive current, etc. can be set according to the corresponding product and pre-stored in the drive module. That is, the embodiments of the present invention also provide a display product, including the aforementioned backlight adjustment system.

[0065] Another embodiment of the present invention also provides a backlight adjustment system, including a processor and a memory connected to the processor. The processor is used to execute the backlight adjustment method as described in the foregoing embodiments. The memory stores instructions executed by the processor, and the instructions cause the processor to perform operations to carry out the backlight adjustment method as described in the foregoing embodiments. The backlight adjustment system provided by the present invention can execute the backlight adjustment method of the foregoing embodiments through the processor. The implementation principle and technical effects are similar and will not be elaborated here.

[0066] Another embodiment of the present invention provides a computer-readable medium, which stores computer-readable instructions. The computer-readable instructions include instructions for executing the backlight adjustment method as described in the foregoing embodiments. The technical effect of the computer-readable medium provided in this embodiment is the same as that of the backlight adjustment method in the foregoing embodiments and will not be elaborated here.

[0067] It should be noted that in the several embodiments provided in this application, it should be understood that the disclosed system, device, and / or method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units / modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in an electrical, mechanical, or other form.

[0068] The units / modules described as separate components may or may not be physically separated. The components shown as units / modules may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units / modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, in each embodiment of the present invention, each functional unit / module can be integrated into one processing unit / module, or each unit / module can exist physically alone, or two or more units / modules can be integrated into one unit / module. The above integrated unit / module can be implemented in the form of hardware, or in the form of a combination of hardware and software functional units / modules.

[0070] The above integrated unit / module implemented in the form of software functional units / modules can be stored in a computer-readable storage medium. The above software functional unit stored in a storage medium includes several instructions for causing one or more processors of a computer device (which can be a personal computer, a server, or a network device, etc.) to execute some steps of the methods in each embodiment of the present invention.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. A backlight adjustment method, characterized in that: include: Step S1: Obtaining a set brightness value of a backlight source; Step S3: determining a preset driving current corresponding to the set brightness value; Step S5: determining a target brightness value according to a comparison result between the set brightness value and the measured brightness value of the backlight source, specifically comprising: S51: Determine a first current according to the preset driving current; S53: Acquire the actually measured brightness value of the backlight source based on the first current; S55: performing a difference process based on the measured brightness value and the set brightness value to obtain a first difference value and comparing the measured brightness value with the set brightness value; S57: determining that the measured brightness value is the target brightness value when the comparison result satisfies a preset condition, otherwise adjusting the preset driving current and returning to step S51; Step S7: determining a target writing current according to the first current corresponding to the target brightness value.

2. The backlight source adjustment method according to claim 1, characterized in that: The preset driving current includes a maximum current and a minimum current; The step S51 specifically includes: taking the arithmetic mean of the maximum current and the minimum current as the first current; The step S57 specifically includes: when the comparison result does not meet the preset conditions and the first difference is greater than 0, the first current corresponding to the measured brightness value is used as the maximum current; when the comparison result does not meet the preset conditions and the first difference is less than 0, the first current corresponding to the measured brightness value is used as the minimum current.

3. The backlight source adjustment method according to claim 1, wherein: The method further includes step S2: acquiring the architecture type of the target test panel, and determining compensation data according to the architecture type; the compensation data includes a compensation current value and / or a compensation brightness value.

4. The backlight source adjustment method according to claim 3, characterized in that: Step S53 specifically includes: obtaining the measured brightness value when the backlight source is driven by the first current; or, the compensation data includes the compensation current value, and step S53 specifically includes: taking the sum of the first current and the compensation current value as the test write current; obtaining the measured brightness value when the backlight source is driven by the test write current.

5. The backlight source adjustment method according to claim 3, characterized in that: The step S55 specifically includes: taking the difference between the measured brightness value and the set brightness value as the first difference; or, the compensation data includes the compensated brightness value, and the step S55 specifically includes: summing the measured brightness value and the compensated brightness value to obtain a first sum, and then subtracting the first sum from the set brightness value to obtain the first difference.

6. The backlight source adjustment method according to claim 1, wherein: The step S53 specifically includes: acquiring a plurality of brightness values ​​of the backlight source corresponding to a plurality of brightness sensors based on the first current, and taking an arithmetic average of the plurality of brightness values ​​as the measured brightness value.

7. The backlight source adjustment method according to claim 2, wherein: The method further comprises step S4: respectively acquiring a maximum brightness value actually measured when the backlight source is driven with the maximum current and a minimum brightness value actually measured when the backlight source is driven with the minimum current.

8. A backlight adjustment system, characterized in that: include: A processor and a memory, wherein the memory stores instructions executed by the processor, and the instructions enable the processor to perform operations to perform the backlight source adjustment method as described in any one of claims 1 to 7.

9. A backlight source adjustment system, characterized in that: include: A backlight module, wherein the backlight module is provided with a backlight source and a brightness sensor, wherein the brightness sensor is used to collect the brightness of the backlight source; A driving module is electrically connected to the brightness sensor and the backlight source, respectively, and the driving module is used to execute the backlight source adjustment method according to any one of claims 1 to 7.

10. A computer-readable medium, characterized in that The computer-readable medium stores computer-readable instructions, and the computer-readable instructions include instructions for executing the backlight source adjustment method according to any one of claims 1 to 7.

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