CN119296494A - Color correction method and device for electronic product display screen - Google Patents
Color correction method and device for electronic product display screen Download PDFInfo
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- CN119296494A CN119296494A CN202411139869.4A CN202411139869A CN119296494A CN 119296494 A CN119296494 A CN 119296494A CN 202411139869 A CN202411139869 A CN 202411139869A CN 119296494 A CN119296494 A CN 119296494A
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Abstract
The present invention relates to the field of screen color correction technologies, and in particular, to a method and an apparatus for correcting color of a display screen of an electronic product. The method comprises the steps of obtaining chromaticity coordinate information of a picture displayed by a display screen, calculating to obtain corrected time sequence control codes according to the chromaticity coordinate information, and burning the corrected time sequence control codes to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen. According to the technical scheme, color correction is carried out under the whole electronic product shape, in the correction process, the corrected time sequence control codes are burnt into the control panel of the display screen in a burning mode, so that hardware correction is realized, and the accuracy of the correction method is higher and can be controlled to be less than or equal to 1.0.
Description
Technical Field
The present invention relates to the field of screen color correction technologies, and in particular, to a method and an apparatus for correcting color of a display screen of an electronic product.
Background
The ΔE value is a composite value representing the color difference, which reflects the difference between the display and the standard color. In the display industry, ΔE values are used to quantify the accuracy with which a display exhibits color. Specifically, the Δe value is a value obtained by calculating the difference between the color displayed by the display and the standard color, and the calculation formula thereof includes calculating the difference between the Lab data of the sample and the Lab data of the reference sample, and adding these difference values to form a square.
The ΔE value is an important reference indicator in evaluating display color reproduction accuracy. In general, the smaller the ΔE value, the closer the color displayed by the display is to the standard color, and the more accurate the color reproduction. For example, if the ΔE value is less than 2, color reproduction is generally considered to be excellent, and such a display can accurately reproduce the color of the original image, making the image look more realistic and natural.
In the existing electronic products, the calibration of the display screen/display can be carried out by independent color correction, namely, the color correction is carried out after the production of the display screen/display is finished, so that the problem of delta E value deviation possibly occurs after the whole display screen/display is assembled, thereby influencing the image color of the display screen/display, or the whole color correction operation can be carried out by using a color corrector, when the color correction is carried out by using a color comparator, a matched software part is needed, the correction precision can only meet delta E=2.0, and the industry leading level less than or equal to 1.0 can not be achieved.
Disclosure of Invention
In order to solve at least the technical problems in the prior art, the invention provides a method and a device for correcting the color of an electronic product display screen.
The invention provides a color correction method for a display screen of an electronic product, which comprises the steps of obtaining chromaticity coordinate information of a picture displayed by the display screen; and burning the corrected time sequence control code to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen.
In some embodiments, the method for obtaining chromaticity coordinate information of pictures displayed by a display screen includes that the display screen displays different colors of display pictures in a complete machine operation state of an electronic product, and the chromaticity coordinate information of a plurality of display pictures is obtained.
In some embodiments, the method for acquiring chromaticity coordinate information of a picture displayed by a display screen further comprises acquiring the chromaticity coordinate information of a plurality of center point positions of the display screen.
In some embodiments, the method of calculating corrected timing control codes from the chromaticity coordinate information includes calculating an average chromaticity bias value from a plurality of the chromaticity coordinate information and calculating corrected timing control codes from the average chromaticity bias value.
In some embodiments, the method for burning the corrected timing control code to the control board of the display screen includes transmitting the corrected timing control code to the whole electronic product in a wireless communication manner, and burning the corrected timing control code to the control board of the display screen through an I2C port or an AUX port.
The invention further provides a color correction device for the display screen of the electronic product, which is used for correcting the color of the electronic product in the whole running state, and comprises an acquisition module, a calculation module and a recording module, wherein the acquisition module is configured to acquire chromaticity coordinate information of a picture displayed by the display screen, the calculation module is configured to calculate and acquire corrected time sequence control codes according to the chromaticity coordinate information, and the recording module is configured to record the corrected time sequence control codes to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen.
In some embodiments, the display screen displays display images with different colors in a whole electronic product running state, and the acquisition module is further configured to acquire the chromaticity coordinate information of the display images.
In some embodiments, the obtaining module is further configured to obtain the chromaticity coordinate information for a plurality of display screen center point positions.
In some embodiments, the computing module is further configured to compute an average chromaticity bias value from a plurality of the chromaticity coordinate information and compute a corrected timing control code from the average chromaticity bias value.
In some embodiments, the electronic product comprises a display screen, a timing control module, a burning module and a control panel, wherein the timing control module is used for correcting the timing control code and sending the timing control code to the electronic product complete machine in a wireless communication mode, and the burning module is used for burning the timing control code to the control panel of the display screen through an I2C port or an AUX port.
According to the color correction method and device for the display screen of the electronic product, when correction is carried out, the electronic product runs completely, chromaticity coordinate information of a picture displayed by the current display screen is obtained, corrected time sequence control codes can be calculated and obtained through the chromaticity coordinate information, the corrected time sequence control codes are burnt to a control panel of the display screen, the control panel selects corresponding control logic (namely corresponding Gamma voltage) according to the corrected time sequence control codes, the liquid crystal rotation angles are different due to the pressure difference between different Gamma voltages and reference (Vcom) voltages, and light emitted by backlight is changed, so that the color effect of the display screen is adjusted. According to the technical scheme, color correction is carried out under the whole electronic product shape, in the correction process, the corrected time sequence control codes are burnt into the control panel of the display screen in a burning mode, so that hardware correction is realized, and the accuracy of the correction method is higher and can be controlled to be less than or equal to 1.0.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
In the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
FIG. 1 is a flowchart of a method for color correction of an electronic product display screen according to an embodiment of the present invention;
FIG. 2 is a second flowchart of a method for color correction of an electronic product display screen according to an embodiment of the present invention;
Fig. 3 is a block diagram of a color correction device for a display screen of an electronic product according to an embodiment of the present invention.
In the figure:
110, an acquisition module, 120, a calculation module, 130, a burning module, 140, a wireless communication module and 150, a storage module.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions according to the embodiments of the present invention will be clearly described in the following with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the embodiment of the invention, the color correction of the display screen is performed in the whole state of the electronic product, namely, the display screen and all system elements are assembled, the color correction in the whole state is performed, the display screen does not need to be subjected to color correction before the assembly, and the problem of delta E value deviation after the assembly of the display screen is completed is avoided.
Compared with the existing whole-machine color correction, the color correction method and device for the electronic product display screen, disclosed by the embodiment of the invention, have the advantages that the correction is performed in a burning mode, namely in a hardware correction mode, so that more accurate color correction is realized, and compared with the existing software correction mode, the delta E value can be controlled below 2.0 and is generally less than or equal to 1.0, so that the color reduction degree of the display screen is higher.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, in the running state of the whole electronic product, the display screen is turned on, and displays a display screen with a set color, where the display screen is used as reference information, to correct the color of the display screen of the whole electronic product. In the embodiment of the invention, the color correction method of the display screen of the electronic product comprises the following steps:
And S10, acquiring chromaticity coordinate information of a picture displayed by the display screen. The display screen displays a set display picture, and chromaticity coordinate information of the display picture is obtained through the image acquisition equipment, for example, the image acquisition equipment comprises an optical probe, the chromaticity coordinate information of the display picture is obtained through the optical probe, for example, the optical probe emits light rays at a designated position of the display picture, and the color coordinate value of the display picture can be calculated by measuring the intensity of the light rays in different wavelength ranges, so that the chromaticity coordinate is determined.
For example, in determining chromaticity coordinates, chromaticity coordinates of the display screen center point position are acquired by the image acquisition device. For example, the fixing structure is used for fixing the image acquisition device in front of the display screen, and the relative positions of the fixing device and the display screen are fixed, so that the accuracy of the acquisition position is ensured, and the image acquisition is carried out on the same position every time the image acquisition is carried out.
In the embodiment of the invention, the acquisition position of the display picture is not limited to this, other acquisition positions can be selected according to the setting, and the position of the image acquisition equipment can be adjusted. Or, for example, chromaticity coordinate information of a plurality of positions may be collected simultaneously on the same display screen.
In step S10, the display screen displays display images with different colors in the running state of the whole electronic product, so that chromaticity coordinate information of a plurality of display images can be obtained. The display screens are preset, and the color of each display screen is different. Based on the chromaticity coordinate information of the display frames, a plurality of chromaticity deviation values can be obtained, and then an average chromaticity deviation value can be calculated and obtained so as to improve the correction accuracy.
For example, 36 display pictures are preset in the whole electronic product, and when the display pictures are collected, the display pictures are played at a certain frequency, and the image collection equipment is utilized to collect chromaticity coordinate information of the set position of each display picture one by one. That is, 36 chromaticity bias values may be obtained, and an average chromaticity bias value may be calculated from the 36 chromaticity bias values.
The method for calculating the chromaticity deviation value according to the chromaticity coordinate information can adopt a CIELAB color difference calculation formula, a CMC color difference calculation formula, a CIE94 color difference calculation formula and the like. In the embodiment of the present invention, the calculation method/calculation formula for the chromaticity deviation value is not limited.
Wherein the different chrominance deviation values comprise a corrected timing control code corresponding thereto, i.e. the corrected timing control code can be determined after the chrominance deviation values are obtained. The corrected time sequence control code is the burning value to be burned. The whole electronic product operates the display screen with the new burnt value, the data of the display screen is corrected, and the new color display can be realized, thereby achieving the purpose of correction.
For example, in step S10, chromaticity coordinate information of a plurality of display frames needs to be acquired, and in step S20, an average chromaticity deviation value needs to be calculated correspondingly by adding the plurality of chromaticity deviation values and then calculating the average chromaticity deviation value. By calculating the obtained average chromaticity deviation value, the corrected timing control code can be confirmed more accurately.
For example, the memory module 150 stores information of the timing control code, and after determining the average chromaticity deviation value, reads the corresponding timing control code, and determines the timing control code as the corrected timing control code.
And S30, burning the corrected time sequence control codes to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen.
Likewise, the driving voltage of the control board to the display screen is confirmed according to the corrected timing control code. After the whole electronic product is assembled, the electronic product is controlled by a time sequence control code in an original running state, and after the corrected time sequence control code is re-burnt, the GAMMA voltage corresponding to the new time sequence control code is different, and the control board controls the liquid crystal rotation angle of the display screen according to the new GAMMA voltage and the reference voltage thereof, so that the brightness of the display screen is adjusted, and compared with the original brightness, the brightness is different, so that the purpose of color correction of the display screen is achieved.
The corresponding logic is also preset, that is, the control board can determine the GAMMA voltage according to the latest time sequence control code, so that the corrected time sequence control code is burnt into the control board, and the purpose of color correction can be achieved.
In the practical example of the invention, after the corrected time sequence control codes are determined, the corrected time sequence control codes can be transmitted to the whole electronic product in a wireless communication mode and burnt to a control panel of a display screen through an I2C port or an AUX port. In the embodiment of the invention, the burning mode is not limited to this, and the burning operation can be performed through other ports.
As shown in fig. 3, the embodiment of the invention further provides a color correction device for a display screen of an electronic product, which is used for color correction under the whole running state of the electronic product, and comprises an acquisition module 110, a calculation module 120 and a recording module 130, wherein the acquisition module 110 is configured to acquire chromaticity coordinate information of a picture displayed by the display screen, the calculation module 120 is configured to calculate and acquire corrected time sequence control codes according to the chromaticity coordinate information, and the recording module 130 is configured to record the corrected time sequence control codes to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen.
In some embodiments, the display screen displays different color display images in the whole electronic product running state, and the obtaining module 110 is further configured to obtain chromaticity coordinate information of the multiple display images.
In some embodiments, the obtaining module 110 is further configured to obtain chromaticity coordinate information of the center point positions of the plurality of display screens.
In some embodiments, the calculation module 120 is further configured to calculate an average chromaticity bias value from the plurality of chromaticity coordinate information and calculate a corrected timing control code from the calculated average chromaticity bias value.
In some embodiments, the electronic device further comprises a wireless communication module 140, wherein the wireless communication module 140 is configured to transmit the corrected time sequence control code to the whole electronic device in a wireless communication manner, and the burning module 130 is further configured to burn to a control panel of the display screen through an I2C port or an AUX port.
It should be noted that, the description of the color correction device for the display screen of the electronic product in the embodiment of the disclosure is similar to the description of the embodiment of the color correction method for the display screen of the electronic product, and has similar beneficial effects as the embodiment of the method, so that the description is omitted. The technical details of the electronic product display screen color correction device provided in the embodiments of the present disclosure may be understood from the description of fig. 1 and fig. 2.
In the following, a color correction operation of a display screen of a notebook computer is taken as an example, and a method and an apparatus according to an embodiment of the present invention are described. And testing in the whole state of the notebook computer.
Firstly, the whole machine to be tested enters the equipment to be tested, for example, an image acquisition device, a conveying device and the like are integrated into one piece of equipment to be tested, and automatic production line operation can be completed in the equipment to be tested. After the test position is reached, the screen of the whole machine to be tested displays the two-dimensional code, the two-dimensional code is captured by the code scanning capturing system, the test program is started, the current whole machine to be tested can be bound after the code scanning, and test tracking is realized.
The whole machine to be tested plays 36 display pictures with different colors, the image acquisition equipment is used for acquiring (X, Y) chromaticity coordinates of the 36 pictures, chromaticity deviation values are calculated according to the (X, Y) chromaticity coordinates, an average chromaticity deviation value is finally obtained, a burning value is determined according to the average chromaticity deviation value, and the burning value can be uploaded to a server.
The server communicates with the whole machine to be tested through WIFI, writes the recorded value into a control panel of the display screen through a 12C or AUX port, so that hardware correction of the whole machine to be tested is completed, when the whole machine to be tested is corrected, the corrected GAMMA voltage and the corrected reference voltage are used for controlling the liquid crystal rotation angle of the display screen, and accordingly brightness of the display screen is adjusted, and the purpose of color correction of the display screen is achieved.
According to the color correction method and device for the display screen of the electronic product, when correction is carried out, the electronic product runs completely, chromaticity coordinate information of a picture displayed by the current display screen is obtained, corrected time sequence control codes can be calculated and obtained through the chromaticity coordinate information, the corrected time sequence control codes are burnt to a control panel of the display screen, the control panel selects corresponding control logic (namely corresponding Gamma voltage) according to the corrected time sequence control codes, the liquid crystal rotation angles are different due to the pressure difference between different Gamma voltages and reference (Vcom) voltages, and light emitted by backlight is changed, so that the color effect of the display screen is adjusted. According to the technical scheme, color correction is carried out under the whole electronic product shape, in the correction process, the corrected time sequence control codes are burnt into the control panel of the display screen in a burning mode, so that hardware correction is realized, and the accuracy of the correction method is higher and can be controlled to be less than or equal to 1.0.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The foregoing is merely illustrative embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present invention, and the invention should be covered. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (10)
1. The color correction method for the display screen of the electronic product is characterized in that the whole electronic product operates, and the method comprises the following steps:
Acquiring chromaticity coordinate information of a picture displayed by a display screen;
calculating a corrected time sequence control code according to the chromaticity coordinate information;
And burning the corrected time sequence control codes to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen.
2. The method for color correction of an electronic product display screen according to claim 1, wherein the method for obtaining chromaticity coordinate information of a picture displayed on the display screen comprises:
and under the running state of the whole electronic product, the display screen displays display pictures with different colors, and the chromaticity coordinate information of a plurality of display pictures is obtained.
3. The method for color correction of an electronic product display screen according to claim 2, wherein the method for obtaining chromaticity coordinate information of a picture displayed on the display screen further comprises:
And acquiring the chromaticity coordinate information of the center point positions of a plurality of display pictures.
4. The method for correcting color of electronic product display screen according to claim 2, wherein the method for calculating corrected time sequence control codes according to the chromaticity coordinate information comprises:
and calculating an average chromaticity deviation value according to the plurality of chromaticity coordinate information, and calculating a corrected time sequence control code according to the average chromaticity deviation value.
5. The method of claim 1, wherein the method of burning the corrected timing control code to a control board of the display screen comprises:
and transmitting the corrected time sequence control code to the whole electronic product in a wireless communication mode, and burning the corrected time sequence control code to a control panel of the display screen through an I2C port or an AUX port.
6. The utility model provides a color correction device of electronic product display screen which characterized in that is used for the color correction under the complete machine running state of electronic product, includes:
An acquisition module (110), the acquisition module (110) being configured to acquire chromaticity coordinate information of a picture displayed by a display screen;
a calculation module (120), the calculation module (120) being configured to calculate a corrected timing control code from the chromaticity coordinate information;
And the burning module (130) is configured to burn the corrected time sequence control codes to a control panel of the display screen so that the control panel can control the liquid crystal rotation angle of the display screen.
7. The color correction device for electronic product display screen according to claim 6, wherein the display screen displays different colors of display pictures in the whole running state of the electronic product;
the acquisition module (110) is further configured to acquire the chromaticity coordinate information of a plurality of the display screens.
8. The electronic product display screen color correction device of claim 7, wherein the acquisition module (110) is further configured to acquire the chromaticity coordinate information for a plurality of display screen center point positions.
9. The electronic product display screen color correction device of claim 6, wherein the computing module (120) is further configured to calculate an average chromaticity shift value from a plurality of the chromaticity coordinate information and calculate a corrected timing control code from the average chromaticity shift value.
10. The electronic product display screen color correction device of claim 6, further comprising a wireless communication module configured to transmit the corrected timing control code to the electronic product complete machine by wireless communication;
The burn-in module (130) is also configured to burn through an I2C port or an AUX port to a control board of the display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411139869.4A CN119296494A (en) | 2024-08-19 | 2024-08-19 | Color correction method and device for electronic product display screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411139869.4A CN119296494A (en) | 2024-08-19 | 2024-08-19 | Color correction method and device for electronic product display screen |
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| CN119296494A true CN119296494A (en) | 2025-01-10 |
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| CN202411139869.4A Pending CN119296494A (en) | 2024-08-19 | 2024-08-19 | Color correction method and device for electronic product display screen |
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