WO2015010378A1

WO2015010378A1 - Adjustment method and device for drive voltage of display module, and display device

Info

Publication number: WO2015010378A1
Application number: PCT/CN2013/085946
Authority: WO
Inventors: 王壮
Original assignee: 北京京东方光电科技有限公司
Priority date: 2013-07-22
Filing date: 2013-10-25
Publication date: 2015-01-29
Also published as: CN103413513A; CN103413513B

Abstract

Provided are an adjustment method and an adjustment device for a drive voltage of a display module, and a display device, which are used to improve the adjustment accuracy of the drive voltage, reduce the workload of debugging, and improve working efficiency.The method comprises: collecting brightness data corresponding to an adjustable greyscale of a drive circuit in a display module under the action of a test drive voltage, and determining a real relationship curve between the adjustable greyscale and the transmittance according to the brightness data;comparing the real relationship curve between the adjustable greyscale and the transmittance with a standard relationship curve between a standard greyscale and the transmittance, to determine the transmittance difference therebetween;and according to the difference, adjusting the drive voltage of the drive circuit, so as to enable the transmittance difference between the real relationship curve and the standard relationship curve to satisfy set requirements, and determining an adjusted drive voltage of the display module.

Description

Method and device for adjusting display module driving voltage, display device

The present application claims priority to Chinese Patent Application No. 201310308240.3, filed on Jan. 22, 2013, the entire content of

Method and adjustment device, display device.

For the display, the input drive voltage signal will produce a brightness output on the screen, but the brightness displayed on the screen is not proportional to the input drive voltage signal. The relationship between the drive voltage (V) input to the display and its transmittance (T) is called the V~T relationship. The display unit of the display is a box, so the V~T relationship actually reflects the electrical-optical response characteristics of the box. Human eyes When observing the display, the change in brightness will cause a change in the perception of the human eye. When the brightness is continuously increased, the brightness of the human eye will become saturated.

In general, since the contrast ratio of the display panel depends on the maximum standard grayscale value 255 and the minimum standard grayscale value of 0, the standard grayscale voltage VGO-VG255 is connected in series by the source driver. The resistor is obtained by partial pressure. However, the standard grayscale voltage VGO-VG255 tends to divergence due to factors such as process and display panel characteristics, resulting in a discontinuous grayscale image on the display panel. In the prior art, a fixed driving circuit can only generate a fixed set of voltage values, which requires the development of a driving voltage or a voltage dividing resistor that is matched with the display panels, but is found by the current method and measuring device. The output is in a certain error. Generally, according to the different requirements of the customer, the actual gamma value of the display will allow an error range of ±0.1 or ±02 based on the target gamma value, and the debugging process is cumbersome.

Embodiments of the present invention provide a method and an adjustment device for adjusting a driving voltage of a display module The display device is used to improve the adjustment precision of the driving voltage, and can reduce the workload of debugging and improve work efficiency.

An embodiment of the present invention provides a method for adjusting a driving voltage of a display module, where the method includes:

Collecting brightness data corresponding to the adjustable gray level of the driving circuit in the display module under the test driving voltage, and determining an actual relationship between the adjustable gray level and the transmittance according to the brightness data; The actual relationship between gray scale and transmittance and the standard curve of standard gray scale and transmittance are compared to determine the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance. a difference in transmittance between the two; adjusting the test driving voltage of the driving circuit according to the difference in the transmittance, so that the difference in transmittance between the actual relationship curve and the standard relationship curve satisfies the setting requirement, And determine the adjusted driving voltage of the display module. The above adjustment method compares the actual relationship between the driving voltage and the transmittance with the standard relationship between the standard gray scale and the transmittance, and can more accurately and effectively adjust the test driving voltage during the debugging process to obtain the display module. The adjusted driving voltage; at the same time, the method can be implemented by completely related software and hardware, and the method realizes intelligentization of driving voltage adjustment, reduces the workload of debugging, improves work efficiency, and avoids human factors. The disturbance caused.

Preferably, the method further includes: determining, according to the adjusted driving voltage, a resistance value of the voltage dividing resistor corresponding to the adjusted driving voltage. According to the ratio between the resistance values of these voltage dividing resistors, the optimum resistance value required to obtain the adjusted driving voltage in the display module driving circuit can be obtained.

Preferably, the method further includes: determining a relationship between a driving voltage to be tested and a standard gray level for determining a test driving voltage in the display module, and obtaining a test driving voltage corresponding to the adjustable gray level of the driving circuit; The module provides a test drive voltage corresponding to the adjustable gray scale of the drive circuit. The test drive voltage of each of the adjustable gray scales is within a voltage range in which the adjustable gray scale satisfies the target Gamma value, so that the display module can work normally.

Preferably, determining a relationship between the driving voltage to be tested and the standard gray level in the display module comprises: collecting brightness data corresponding to the picture in the plurality of display modules under different driving voltages, and determining a plurality of driving voltages to be tested Correlation curve with transmittance; according to the relationship between standard gray scale and transmittance, obtain the standard relationship curve between standard gray scale and transmittance; and the relationship between each of the driving voltage and transmittance to be tested The curve is fitted to the standard relationship between the standard gray scale and the transmittance, and a relationship curve between the plurality of sets of driving voltages to be tested and the standard gray scale is obtained. From the relationship between the driving voltage to be tested and the standard gray scale in the determined display module, the voltage range of the test driving voltage required for each standard gray scale to satisfy the target gamma value can be obtained.

Preferably, the obtaining the test driving voltage corresponding to the adjustable gray scale of the driving circuit comprises: obtaining multiple sets of each adjustable gray scale according to the relationship between the plurality of sets of driving voltages to be tested and the standard gray scale a voltage range of the test driving voltage when the target gamma value is satisfied; obtaining a test drive that simultaneously satisfies the adjustable gray scale of the plurality of display modules according to the voltage ranges of the plurality of sets of the adjustable driving gray voltages Voltage. The test drive voltage obtained by this step can meet the needs of the above multiple display modules for normal operation.

The standard gray scale and transmittance standard relationship curve satisfies:

T::::(L/M) ^G

Where G is the target gamma value, T is the transmittance, L is the standard gray scale, and M is the maximum value of the standard gray scale L. The standard gray scale and transmittance standard relationship curve is used as a target curve of the actual relationship curve between the adjustable gray scale and the transmittance.

An embodiment of the present invention provides an apparatus for adjusting a driving voltage of a display module, where the apparatus includes:

The acquisition module is configured to collect brightness data corresponding to the adjustable gray level of the driving circuit in the display module under the test driving voltage, and send the collected brightness data to the operation processing module; the operation processing module, ^ receiving The brightness data sent by the collection module, and determining an actual relationship between the adjustable gray level and the transmittance according to the brightness data; and an actual relationship curve between the adjustable gray level and the transmittance The standard gray scale is compared with the transmittance standard curve to determine the difference between the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance, and a comparison result including the difference in the transmittance is sent to the adjustment module;

And an adjusting module, configured to receive the comparison result, and adjust the test driving voltage according to the difference of the transmittance, so that a difference in transmittance between the actual relationship curve and the standard relationship curve satisfies a setting requirement, And determine the driving voltage of the display module after adjustment.

Preferably, the adjustment module is further configured to determine the adjustment according to the adjusted driving voltage. The value of the voltage divider resistor corresponding to the entire driving voltage. According to the ratio between the resistance values of the voltage dividing resistors, the optimum resistance value required to obtain the adjusted driving voltage in the design of the display module driving circuit can be obtained.

Preferably, the operation processing module is further configured to determine a relationship between a driving voltage to be tested and a standard gray scale for determining a test driving voltage in the display module, and obtain a test drive corresponding to the adjustable gray scale of the driving circuit. a voltage; and a test driving voltage corresponding to the adjustable gray scale of the driving circuit is provided to the display module.

Preferably, the determining the relationship between the test driving voltage and the standard gray scale comprises: collecting luminance data corresponding to the screens of the plurality of display modules under different driving voltages to be tested, and determining a plurality of driving voltages to be tested and a relationship curve of transmittance; a standard relationship curve between standard gray scale and transmittance according to a relationship between standard gray scale and transmittance; and a relationship curve between each of the driving voltages to be tested and the transmittance The standard gray scale is matched with the standard curve of the transmittance, and a relationship curve between the plurality of sets of driving voltages to be tested and the standard gray scale is obtained. From the relationship between the driving voltage to be tested and the standard gray scale in the determined display module, the voltage range of the test driving voltage required for each standard gray scale to satisfy the target Gamma value can be obtained.

Preferably, the obtaining the test driving voltage corresponding to the adjustable gray scale of the driving circuit comprises: obtaining, according to the relationship curves of the plurality of groups of driving voltages to be tested and the standard gray scale, obtaining, for each set of adjusted gray levels, a voltage range of the test driving voltage at the target gamma value; obtaining a test driving voltage that simultaneously satisfies the adjustable gray scale of the plurality of display modules according to the voltage ranges of the plurality of sets of the adjustable driving gray voltages of the plurality of display modules . The test driving voltage can meet the needs of the above multiple display modules to work normally.

T-(L/M) ^G

The embodiment of the invention provides a display device, which comprises the driving voltage adjusting device of the display module as described above. When the driving voltage of the display module of the display device is adjusted, the intelligent adjustment of the driving voltage is realized, thereby reducing the workload of debugging and improving the work. Efficiency, avoiding the interference caused by human factors. In addition, since the workload of debugging is reduced, the labor cost and the time cost are correspondingly reduced, thereby reducing the manufacturing cost of the display device.

1 is a schematic flow chart of a method for adjusting a driving voltage in a display module according to an embodiment of the present invention;

2 is a schematic diagram showing a relationship between driving voltage and transmittance in a module;

Figure 3 is a schematic diagram showing the standard relationship between standard gray scale and transmittance;

4 is a schematic diagram of a method for obtaining a driving voltage of a display module;

FIG. 5 is a schematic structural diagram of an apparatus for adjusting a driving voltage of a display module according to an embodiment of the present invention. detailed description

The embodiment of the invention provides a method and an adjustment device for adjusting the driving voltage of the display module, which are used for improving the adjustment precision of the driving voltage, and can reduce the workload of debugging and improve the working efficiency.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1 of the present invention provides a method for adjusting a driving voltage of a display module, where the method includes:

Collecting brightness data corresponding to the adjustable gray level of the driving circuit in the display module under the test driving voltage, and determining an actual relationship between the adjustable gray level and the transmittance according to the brightness data; The actual relationship between gray scale and transmittance and the standard curve of standard gray scale and transmittance are compared to determine the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance. The difference in transmittance between;

Adjusting a driving voltage of the driving circuit according to the difference in transmittance, so that a difference in transmittance between the actual relationship curve and the standard relationship curve satisfies a setting requirement, and determining an adjusted driving of the display module Voltage. Referring to FIG. 1 , in the process of implementation, the adjusting method specifically includes:

Step 101, referring to FIG. 2, a series of driving voltages to be tested are respectively supplied to the plurality of display modules by the measuring instrument, and brightness data of each of the display modules under different driving voltages to be tested is collected, according to The brightness data is obtained as a relationship between the driving voltage to be tested and the transmittance of each display module, that is, a V-T curve, wherein V represents a driving voltage and T represents a transmittance; and the providing is provided to the display module Among the series of driving voltages, the minimum value is 0v, and then gradually increases by the amplitude of OJv until the transmittance of the display module reaches! 00%.

As can be seen from Fig. 2, the transmittance of the display module is within a certain range, which increases as the driving voltage to be tested gradually increases.

It should be noted that the display module may be a liquid crystal display module, or may be another display module such as an organic light emitting diode OLED, a plasma PDP, or a cathode ray CRT.

Step 102, referring to FIG. 3, according to the relationship between the standard gray scale and the transmittance, a standard relationship curve between the standard gray scale L and the transmittance, that is, an L-T standard curve; wherein L represents a standard gray scale, Its value ranges from 0 to 255. 2.0, 2.2, 2, 4 in Figure 3 represent the target Gamma value. It can be seen from Fig. 3 that the transmittance corresponding to the same standard gray scale decreases as the target Gamma value gradually increases.

T::::(L/M) ^G

Where G is the target gamma value, T is the transmittance, L is the standard gray scale, and M is the maximum value of the standard gray scale L.

Step 103: According to the relationship between the driving voltage to be tested and the transmittance of each display module obtained in step 101 and the standard relationship between the standard gray scale L and the transmittance obtained in step 102, each of the fitting curves is fitted. Displaying the relationship between the driving voltage of the module to be tested and the standard gray scale, that is, the V-L curve; according to the V-L curve of each display module, the test driving of each adjustable gray level in the display module is obtained. The range of voltages; the standard gray scale represents the level of different brightness from the darkest to the brightest. The more intermediate levels, the more delicate the picture can be rendered. Since the minimum standard grayscale value is 0 and the maximum standard grayscale value is 255, we will refer to the minimum standard grayscale value to the maximum standard grayscale value as 256 standard grayscales. For a display module, the entire standard gray scale cannot be obtained in the drive circuit, and only a part of it can be taken. We will describe The part of the standard gray scale that can be obtained is called an adjustable gray scale. For example, the driving circuit in the display module can only take 0, 4, 8, 16-, 52, 76, 100, 131, 152, 176, 2.03. Some standard grayscales such as 225, 239, 247, 251, 255, etc., so we will take some standard grayscales 0, 4, 8, 16, 52, 76, 100, 131, ! 52, 176, 203, 225, 239, 247, 251, 255 are referred to as adjustable gray scales of the display module. Then, according to the law that the transmittance corresponding to each standard gray scale gradually decreases as the target gamma value increases, and the light transmittance increases in a certain range with the gradual increase of the driving voltage to be tested. Regularly, the voltage range at which each adjustable gray scale satisfies the target gamma value (the target gamma value is 2, 2 with an error of ±0.2) is obtained, for example, the voltage range that the adjustable gray scale 76 satisfies. For [V76 ₂ . ₄ , V76 ₂ .o

For the plurality of display modules, a plurality of sets of voltage ranges of the test driving voltage corresponding to the adjustable gray scales 76 can be obtained, specifically: the voltage corresponding to the adjustable gray scales 76 in the first display module The range is: SUU U ₂ ] , the voltage range corresponding to the adjustable gray level 76 in the second display module is: S2[U ₃ , U ₄ ],..., the adjustable gray level 76 in the nth display module The corresponding voltage range is: Sn[U _2n4 , U ₂ J. The plurality of sets of voltage ranges corresponding to the adjustable gray scales 76 are intersected. As shown in FIG. 4, an intersection is performed between S S2 and S Sii to obtain a set of voltage ranges S capable of simultaneously satisfying the plurality of display modules, and an intermediate value is taken from the voltage range S as the The test driving voltage of the gray scale 76 is adjustable in the plurality of display modules;

According to the above steps, the test driving voltage corresponding to the other adjustable gray scales can also be obtained. Step 104, outputting, by the voltage regulator, a test driving voltage corresponding to each adjustable gray level in the driving circuit, and then collecting brightness data of the screen of the display module under the test driving voltage by using a brightness tester, and according to the brightness The data determines the actual relationship between the adjustable gray scale and the transmittance.

Step 105: comparing the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance, and determining an actual relationship between the adjustable gray scale and the transmittance and The difference in transmittance between the standard gray scale and the transmittance standard curve.

Step 106, controlling the voltage regulator to adjust the output test driving voltage according to the difference of the transmittance and the preset voltage adjustment method, and then repeating the collection of the actual relationship between the adjustable gray scale and the transmittance and Alignment, until the difference between the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance meets the setting requirement, for example, the adjustable gray scale and Actual relationship curve of transmittance and standard curve of standard gray scale and transmittance Step 107, after completing step 106, acquiring the adjusted driving voltage of the display module; or / and, by using the internal resistor divider principle of the voltage regulator, calculating the voltage dividing resistance corresponding to the adjusted driving voltage Value, through these resistance ratios, the optimum resistance value required for the design of the display module driving circuit can be obtained.

It should be noted that, in the method provided by the embodiment of the present invention, the test driving voltage of the gray scale in the plurality of display modules may be acquired without using the step 101, the step 102, and the step 103. The developer can provide a set of test driving voltages for the plurality of display modules according to the product design experience, and then adjust the driving voltage of the display module through subsequent steps.

The second embodiment of the present invention provides a device for adjusting the driving voltage of the display module, and the structure thereof is as shown in FIG. 5. As can be seen from FIG. 5, the device for adjusting the driving voltage of the display module includes: an acquisition module 501, an operation processing module 502 and an adjustment module 503, specifically:

The acquisition module 501 is configured to collect brightness data corresponding to the adjustable gray level of the driving circuit in the display module under the test driving voltage, and send the collected brightness data to the operation processing module 502;

The operation processing module 502 receives the brightness data sent by the acquisition module 501, and determines an actual relationship between the adjustable gray level and the transmittance according to the brightness data; and the adjustable gray level and transmittance. The actual relationship curve is compared with the standard gray scale and transmittance standard curve to determine the transmittance between the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance. a difference, and transmitting a comparison result including the difference in the transmittance to the adjustment module 503; the standard gray scale and transmittance standard relationship curve satisfies:

T::::(L/M) ^G

The adjusting module 503 is configured to receive the comparison result, and adjust the test driving voltage according to the difference in transmittance in the result, so that the difference in transmittance between the actual relationship curve and the standard relationship curve is satisfied. Set the requirements and determine the drive voltage after the display module is adjusted.

The adjusting module 503 is further configured to determine a resistance value of the voltage dividing resistor corresponding to the adjusted driving voltage. The collection module 501, the operation processing module 502, and the adjustment module 503 are also used to determine a test driving voltage of the display module, specifically:

The collecting module 501 collects brightness data of each screen of the display module under different driving voltages to be tested when a series of driving voltages to be tested are respectively supplied to the plurality of display modules by the measuring instrument, and Sended to the arithmetic processing module 502. The minimum value of the series of driving voltages to be tested provided to the display module is 0v, and then gradually increases by the amplitude of O. l v until the transmittance of the display module reaches 100%.

The operation processing module 502 determines, according to the brightness data, a relationship between a driving voltage to be tested and a transmittance in each display module, as shown in FIG. 2; and the driving voltage and transmittance to be tested The relationship curve is fitted with the standard gray scale and transmittance standard curve, and the relationship between the driving voltage to be tested and the standard gray scale in each display module is obtained, as shown in FIG. 3; as can be seen from FIG. 2, The transmittance of the display module is within a certain range, which increases with the gradual increase of the driving voltage to be tested. As can be seen from FIG. 3, the transmittance corresponding to the same adjustable gray level follows the target gamma value. The gradual increase is 3⁄4i small.

Obtaining, according to the v-L curve of each display module, a voltage range of the test driving voltage of each adjustable gray level in the display module; for example, for the display module, the display module is grayed out The steps are 0, 4, 8, 16, 52, 76, 100, 131, 152, 176, 203, 22.5, 239, 247, 251, 255, respectively, according to the transmittance as the target gamma value increases The small law, and the law that the light transmittance increases with the gradual increase of the driving voltage within a certain range, can obtain that each adjustable gray level satisfies the target gamma value (with a target gamma value of 2.2, error voltage range of ± 0.2 for example), for example adjustable to meet the 76 gray scale voltage range of _{_{_{[V76 2 4, V76 2 .o}}} .];

For the plurality of display modules, a plurality of sets of voltage ranges corresponding to the adjustable gray scales 76 may be obtained, and the adjustment module 503 intersects the plurality of sets of voltage ranges corresponding to the adjustable gray scales 76 Obtaining a set of voltage ranges capable of simultaneously satisfying the plurality of display modules, and taking an intermediate value from the voltage range capable of simultaneously satisfying the plurality of display modules, as the plurality of display modules Adjusting the test driving voltage of the gray scale 76; similarly, the test driving voltage corresponding to the other adjustable gray scales can be obtained;

The operation processing module 502 is further configured to provide the display module with a test driving voltage corresponding to each adjustable gray level of the driving circuit. A third embodiment of the present invention provides a display device including the device for adjusting the driving voltage of the display module described in the second embodiment. The display device may be a display, a mobile phone, a television, a notebook, an all-in-one, or the like. In addition to the above-mentioned adjustment device for the driving voltage of the display module, other essential components of the display device of the third embodiment are understood by those skilled in the art, and therefore are no longer used. Nor should it be construed as limiting the invention.

In summary, in the method for adjusting the driving voltage of the display module provided by the embodiment of the present invention, the actual relationship between the test driving voltage and the transmittance is compared with the standard relationship between the standard gray scale and the transmittance, as an adjustment driving. The voltage method can more accurately and effectively adjust the test driving voltage during the debugging process; and, the method combines the actual relationship between the driving voltage and the transmittance with the standard grayscale and transmittance standard relationship curve. It is used to determine the test driving voltage when the adjustable gray scale in the display module satisfies the target gamma value; in addition, the mediation process can be completed by using a preset program, which realizes the intelligentization of the adjustment process and reduces the debugging work. Volume, improve work efficiency, while reducing the interference of artificial factors.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of the inventions

Claims

demand for profit

1. A method for adjusting the driving voltage of a display module, characterized in that the method includes: collecting brightness data corresponding to the adjustable gray scale of the driving circuit in the display module under the action of the test driving voltage, and based on The brightness data determines the actual relationship curve between the adjustable gray scale and transmittance; compares the actual relationship curve between the adjustable gray scale and transmittance with the standard relationship curve between standard gray scale and transmittance, and determines the actual relationship curve between the adjustable gray scale and transmittance. The difference in transmittance between the actual relationship curve between adjusted gray scale and transmittance and the standard relationship curve between standard gray scale and transmittance;

The test driving voltage of the driving circuit is adjusted according to the difference in transmittance, so that the difference in transmittance between the actual relationship curve and the standard relationship curve meets the setting requirements, and the adjusted value of the display module is determined. driving voltage.

2. The method according to claim 1, characterized in that the method further includes: determining the resistance value of the voltage dividing resistor corresponding to the adjusted driving voltage according to the adjusted driving voltage.

3. The method of claim 1, characterized in that, the method further includes:

Determine the relationship curve between the driving voltage to be measured and the standard gray scale used to determine the test driving voltage in the display module, and obtain the test driving voltage corresponding to the adjustable gray scale of the driving circuit;

A test driving voltage corresponding to the adjustable gray scale of the driving circuit is provided to the display module.

4. The method according to claim 3, characterized in that determining the relationship curve between the driving voltage to be measured and the standard gray scale in the display module specifically includes:

Collect brightness data corresponding to images in multiple display modules under different driving voltages to be tested, and determine the relationship curves between multiple sets of driving voltages to be tested and transmittance;

According to the relationship between standard gray scale and transmittance, obtain the standard relationship curve between standard gray scale and transmittance; compare the relationship curve between each driving voltage to be measured and transmittance with the standard gray scale and transmittance. The standard relationship curve is fitted to obtain multiple sets of relationship curves between the driving voltage to be measured and the standard gray scale.

5. The method of claim 3, wherein obtaining the test driving voltage corresponding to the adjustable gray scale of the driving circuit specifically includes:

According to the relationship curve between the plurality of groups of driving voltages to be tested and the standard gray scale, obtain the voltage range of the plurality of groups of test driving voltages where each adjustable gray scale satisfies the target gamma value ^;

According to the voltage range of the multiple sets of test driving voltages for each adjustable gray scale, it is possible to simultaneously satisfy Adjustable gray scale test driving voltages of the multiple display modules.

6. The method according to claim 4, characterized in that the standard relationship curve between the standard gray scale and transmittance satisfies:

T:(L/M) ^G

Among them, G is the target gamma value, T is the transmittance, L is the standard gray scale, and M is the maximum value of the standard gray scale L.

7. A device for adjusting the driving voltage of a display module, characterized in that the device includes: a collection module, used to collect the adjustable gray scale corresponding to the driving circuit in the display module under the action of the test driving voltage. brightness data, and sends the collected brightness data to the computing processing module; the computing processing module is used to receive the brightness data sent by the collection module, and determine the adjustable gray scale and transmittance based on the brightness data The actual relationship curve; and used to compare the actual relationship curve between the adjustable gray scale and transmittance and the standard relationship curve between the standard gray scale and transmittance, and determine the actual relationship curve between the adjustable gray scale and transmittance. and the difference in transmittance between the standard relationship curve of standard gray scale and transmittance, and send the comparison result including the difference in transmittance to the adjustment module;

an adjustment module, configured to receive the comparison result and adjust the test driving voltage according to the difference in transmittance, so that the difference in transmittance between the actual relationship curve and the standard relationship curve meets the setting requirements, And determine the adjusted driving voltage of the display module.

8. The device according to claim 7, wherein the adjustment module is further configured to determine the resistance value of the voltage dividing resistor corresponding to the adjusted driving voltage according to the adjusted driving voltage.

9. The device according to claim 7, characterized in that the operation processing module is also used to determine the relationship curve between the driving voltage to be tested and the standard gray scale used to determine the driving voltage in the display module to obtain the driving circuit The test driving voltage corresponding to the adjustable gray scale; and used to provide the test driving voltage corresponding to the adjustable gray scale of the driving circuit to the display module.

10. The device according to claim 9, wherein the step of determining the relationship curve between the driving voltage to be measured and the standard gray scale specifically includes:

According to the relationship between standard gray scale and transmittance, obtain the standard relationship curve between standard gray scale and transmittance; Each of the relationship curves between the driving voltage to be measured and the transmittance is fitted to the standard curve between the standard gray scale and the transmittance, to obtain multiple sets of relationship curves between the driving voltage to be measured and the standard gray scale.

11. The device according to claim 9, wherein obtaining the test driving voltage corresponding to the adjustable gray scale of the driving circuit specifically includes:

According to the relationship curve between the plurality of groups of driving voltages to be tested and the standard gray scale, obtain the voltage range of the plurality of groups of test driving voltages for each adjustable gray scale that meets the target gamma value;

According to the voltage range of the plurality of sets of test driving voltages for each adjustable gray scale, a test driving voltage that simultaneously satisfies the adjustable gray scales of the plurality of display modules is obtained.

12. The device according to claim 10, characterized in that, the target of the standard gray scale and transmittance

T-(L/M) ^G

13. A display device, characterized in that the display device includes the device for adjusting the driving voltage of the display module according to claim 712.