CN112802418B - Panel color temperature matching correction method and system - Google Patents

Abstract

A color temperature matching correction system and method for a panel, the system adopts a first color analyzer for obtaining a first specific area color value of a specific area of a display, and a second color analyzer for obtaining a full area color value of a full area of the display, and obtaining a second specific area color value corresponding to the specific area. And then, obtaining the difference between the color value of the first specific area and the color value of the second specific area, obtaining another difference between the color value of the whole area and the color value of the second specific area, calculating the sum of the differences, and then introducing the sum of the differences into the obtained color target value of the whole area in an offline mode to adjust the original correction target for the specific area of the display so as to generate a new correction target and obtain the display parameter considering the color effect of the whole area display of the display.

Description

Panel color temperature matching correction method and system

Technical Field

The present invention relates to a panel color correction technology, and more particularly to a method and system for correcting the color temperature of a panel by mapping color values measured by different color analyzers to obtain a correction target.

Background technique

The native colors of the display may still need to be adjusted to the true colors and need to be calibrated through instruments to make the colors seen by the human eye more consistent. The measurement data will be obtained through a two-dimensional color analyzer, and the calibration can be performed based on this.

Before a flat panel display leaves the factory, it will be color-calibrated so that the image displayed on the display can be adjusted to a state close to the true color. The reference color space definition is, for example, the "CIE1931 color gamut diagram" established by the International Commission on Illumination (CIE) in 1931. However, the conventional method is often to adjust the center of the display panel, and there may still be color deviation problems at the edges outside the center of the display panel.

For example, the color analyzer used in the conventional color correction method can obtain the characteristics of the center or a part of the display area. Once the color gamut target is determined, the color parameters such as color and brightness can be corrected using the selected regional characteristics of the display, such as hardware parameters such as Pre Gamma, Color Transfer Matrix and Post Gamma to achieve the color gamut target, such as CIE 1931 xyY color space (CIExyY color space), where the pre-gamma processing is to linearize the encoding of the non-linear target color space (Non-LinearRGB) to form a linear encoding of the target color space (Linear RGB) to facilitate the subsequent color transfer matrix to perform linear color space conversion. Therefore, the native color space of the display is converted to a target color space (Linear R'G'B') through the color transfer matrix, and the color information output by the post-gamma processing includes the linearization of its native panel characteristics. Afterwards, when the display is shipped, the corrected color parameters can be applied to the chip that controls the display panel.

However, conventional color analyzers measure close to the center of the display and can only obtain data from a portion of the display area. They cannot calibrate based on data from the entire display area. In addition, the perception of the human eye is a comprehensive influence of the entire display, so even if different displays have the same color correction mechanism, there are still differences in the perception of the human eye.

Summary of the invention

The disclosure discloses a panel color temperature matching correction method and a system for implementing the method. The panel color temperature matching correction system mainly adopts two color analyzers, namely a first color analyzer and a second color analyzer.

In the panel color temperature matching and correction system, the first color analyzer, such as a traditional color analyzer, has a correction target for the display. According to an embodiment of the panel color temperature matching and correction system, the first color analyzer is used to obtain a first specific area color value of a specific area of the display, and the specific area is, for example, a central area close to the center of the display panel of the display; the second color analyzer, such as a two-dimensional color analyzer, is used to obtain a full area color value of the full area of the display, and can derive a second specific area color value corresponding to the specific area of the display.

According to the implementation method of the panel color temperature matching correction method running therein, a first difference between the color value of the first specific area and the color value of the second specific area can then be obtained, as well as a second difference between the color value of the entire area and the color value of the second specific area, that is, a new entire area color target value is introduced, and based on the first difference and the second difference, the correction target is adjusted to generate a new correction target for calibrating the display parameters of the display.

Preferably, the new calibration target is used to adjust the gamma parameter and the color conversion parameter in the color conversion matrix to become the display parameter for correcting the color representation of the display.

Furthermore, the new calibration target is applied to the first color analyzer to perform color parameter adjustment on a specific area of each display to form firmware parameters applied to a display chip of each display.

Preferably, the new full-area color target value is obtained by a panel color temperature matching correction system in an offline mode, and is a correction target for correcting the display.

Furthermore, the step of obtaining a new full-area color target value in the offline mode further includes: providing multiple displays, each display obtaining the color value of a specific area of each display through a first color analyzer, and then obtaining the full-area color value of each display and the color value of the specific area corresponding to each display through a second color analyzer, so that for each display, the difference between the color values of the specific area obtained by the first color analyzer and the second color analyzer is calculated, plus another difference between the color value of the specific area obtained by the second color analyzer and the global color value, to obtain the sum of the two differences, and based on the correction target set in the specific area by the first color analyzer and the sum of the two differences, a full-area target value for each display by the second color analyzer can be obtained, and then based on the individual full-area target values of each display, an average value of multiple displays is calculated to obtain a new full-area color target value.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram showing the use of a first color analyzer;

FIG2 is a schematic diagram showing the use of the first color analyzer;

FIG. 3 is a schematic diagram showing an embodiment of a panel color temperature matching correction system obtaining a correction target in an offline mode.

FIG4 is a schematic diagram of an embodiment of a panel color temperature matching and correction system obtaining corrected color parameters in an online mode;

FIG. 5 is a flow chart showing an embodiment of a method for correcting panel color temperature matching.

Symbol Description

First Color Analyzer 15

Display 10

Second color analyzer 20

Display P1, P2, PN

First Color Analyzer 301

Second color analyzer 302

Multi-panel color calculator 305

Calibration target 307

First Color Analyzer 401

Second color analyzer 402

Color Correction Process 403

Calibration target 405

Corrected color parameters 407

Steps S501 to S513 Panel color temperature matching correction process

Detailed ways

The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

The disclosure document proposes a panel color temperature matching correction method and a system for implementing the method, which is a color correction method applied to flat panel displays (such as LED backlights). Unlike the conventional technology that only performs color adjustment on the central part of the display (including the backlight and the display panel) when the display leaves the factory, one of the embodiments of the proposed method uses the three-color stimulus value of the color as the target parameter for adjustment. In addition to the original adjustment of the central or partial area, the adjustment of the remaining parts is also considered. The means mainly add a two-dimensional color analyzer (2D color analyzer, which can be called "second color analyzer") to the conventional color analyzer (color analyzer) (which can be called "first color analyzer") to assist in measurement, so as to measure the characteristics of the complete display area of the display, thereby correcting the problem that the traditional first color analyzer can only measure a partial area of the display panel, causing the human eye to still have different perceptions of different parts of the entire display.

The two-dimensional color analyzer (second color analyzer) can measure the visual angle of different areas on the display and the influence of the color and brightness mixing between different areas. Therefore, the color information of the display obtained by the two-dimensional color analyzer is more similar to the perception of the human eye, thereby correcting the problem caused by the original color analyzer (first color analyzer) that can only measure part of the area. However, since the two-dimensional color analyzer takes longer time than the conventional color analyzer because it needs to measure the entire panel area of the display, a panel color temperature matching correction method is proposed. The method process includes the measurement of the second color analyzer and the first color analyzer, and is used to make up for the defects of each in the measurement area and measurement time.

The system for implementing the panel color temperature matching correction method is provided with a first color analyzer and a second color analyzer. The first color analyzer is conventionally used to obtain color information of the central area or a specific area of the display panel, for example (but not limiting the operation of the invention): KONICA MINOLTA CA-310 color analyzer; the second color analyzer is preferably capable of obtaining color information of the entire area of the display panel, for example (but not limiting the operation of the invention): KONICA MINOLTA CA-2000 color analyzer, which is a two-dimensional color analyzer.

According to an embodiment, the first color analyzer is shown in FIG. 1 , which shows that the first color analyzer 15 is installed in front of a display panel of a display 10. The display 10 is a liquid crystal display (LCD) using a light emitting diode (LED) as a backlight module. The first color analyzer 15 is used to measure the color information of the central area (or other specific area) of the panel of the display 10. The first color analyzer 15 can adjust the overall pixel performance in this area according to a calibration target pre-set by the first color analyzer for the display, such as parameters such as chromaticity and luminance. In actual operation, the brightness characteristic included in the color information can be a brightness characteristic represented by a gamma curve, and the chromaticity is a parameter adjusted by the first color analyzer, such as the tristimulus values in the CIE 1931 color space, which can be three parameters derived from red (R), green (G) and blue (B).

FIG2 is a schematic diagram of an operation embodiment of a two-dimensional color analyzer used in the color temperature matching calibration method of a display panel. The second color analyzer 20 is shown in the figure, such as a two-dimensional color analyzer. Different from the first color analyzer 15, the second color analyzer 20 can obtain the color information of the entire area of the display panel of the display 10 by taking a photo or scanning at a distance from the display 10.

The panel color temperature matching and correction system using the first color analyzer and the second color analyzer can be divided into two parts, namely, an offline mode and an online mode. The offline mode is to determine the human eye perception target, and the online mode is to calibrate each display by the same human eye perception target, which are described in Figures 3 and 4 respectively.

FIG3 is a schematic diagram of an embodiment of a panel color temperature matching correction system for obtaining a correction target in an offline mode. The figure shows a plurality of displays P1, P2, ... PN (at least two, and display panels provided by different panel suppliers can be used). Each display obtains color information by photographing and converting by a first color analyzer 301 and a second color analyzer 302, respectively, and then a multi-panel color calculator 305 calculates a corrected correction target 307.

In this embodiment, each display P1, P2, ... PN obtains the color value of a specific area thereof through the first color analyzer 301. The specific area may be, for example, a portion close to the center of the display area of the display. The color analysis (using the first color analyzer or the second color analyzer) is for white sampling in the CIE 1931 xyY color space. The W value expressed in the following equations may be color information converted from the white color temperature information of x, y, etc. in the CIE 1931 color space.

For example, sampling white in the xyY color space, for example, the color of sunlight 6500K can be used as the standard (x=0.313, y=0.329), and the color temperature information is obtained by shooting or scanning, and then converted into color values by the color temperature and color value conversion formula such as equation 1. Generally, the white sampling value can be in the xyY color space. The purpose of equation 1 is to convert the target white color temperature to the xyY color space. The correction target white is the human eye perception, that is, to convert the human eye perception into the actual calculated value. In order to correct the problem of inconsistent human eye perception, the correction target white is converted to the xyY color space by equation 1 to calculate and correct the new target. Then, the values obtained according to the color values of the specific areas of each display P1, P2, ... PN are W _{c_CA_P1} , W _{c_CA_P2} , ... W _{c_CA_PN} . The second color analyzer 302 is shown as a two-dimensional color analyzer. The second color analyzer 302 obtains the color value of the entire display panel of each display P1, P2, ... PN, wherein the color value can also be obtained from the color temperature information by calculating equation 1. In this example, while obtaining the color value of the entire area of each display, the color value of the specific area of each display obtained by the second color analyzer can also be converted to obtain the color value of the specific area of each display in the specific area. After obtaining the color information of the entire area of each display (W _{p_2D_CA_P1} , W _{p_2D_CA_P2} , ... W _{p_2D_CA_PN} ), the specific area (such as the central area) obtained by the first color analyzer 301 can be obtained.

Equation 1 shows the formula for converting color temperature to color values such as x, y in the color space CIE 1931 xyY. Equation 1:

That is, the first color analyzer 301 and the second color analyzer 302 both obtain the color values of specific areas (such as the central area) of the multiple displays P1, P2, ... PN, and the values are W _{c_CA_P1} , W _{c_CA_P2} , ... W _{c_CA_PN} . The second color analyzer 302 also obtains the color values of the entire area of each display, and the values are W _{p_2D_CA_P1} , W _{p_2D_CA_P2} , ... W _{p_2D_CA_PN} . For the first color analyzer 301, a calibration target (W _{c_CA_target} ) has been set.

Therefore, in the panel color temperature matching correction method, a new correction target (W p — _{2D_CA —} new_target ) 307 may be further obtained according to the correction target (W _{c — CA — target} ), for example, by running Equation 2 in the multi-panel color calculator 305 .

According to Equation 2, for example, for display P1, the difference (W _{c_2D_CA_P1 -W c_CA_P1 ) between the color value (W c_2D_CA_P1} ) of a specific area (e.g., the central area) of display P1 obtained by the second color analyzer 302 and the color value (W _{c_CA_P1} ) of the same specific area (e.g., the central area) of display P1 obtained by the first color analyzer 301 can be calculated; another difference (W _{p_2D_CA_P1} -W _{c_2D_CA_P1} ) between the color value (W _{p_2D_CA_P1} ) of the entire area of display P1 obtained by the second color analyzer 302 and the color value (W _{c_2D_CA_P1} ) of the specific area of display P1 obtained by the second color analyzer 302 can be calculated; the sum of the above two differences ((W _{c_2D_CA_P1} -W _{c_CA_P1} )+(W _{p_2D_CA_P1} -W _{c_2D_CA_P1} )) _is calculated _. )), and the target value (W _{c — CA — target} ) set in a specific area (eg, the central area) from the first color analyzer must be added, so that the full area target value (W _{p — 2D — CA} — P1 — target ) of the display P1 obtained by the second color analyzer 302 can be obtained.

Equation 2:

W _{p_2D_CA_P1_target} = W _{c_CA_target} + (W _{c_2D_CA_P1} − W _{c_CA_P1} ) + (W _{p_2D_CA_P1} − W _{c_2D_CA_P1} )

According to Equation 2, the full-area target value (W _{p — 2D_CA_P2 — target} ) generated by the second color analyzer 302 for the display P2 can be derived in a similar manner until the full-area target value (W _{p — 2D_CA_PN_target} ) is generated for the display PN.

In the multi-panel color calculator 205, as shown in equation 3, the sum of the full-area target values of the display panels in each display P1, P2, ... PN (W _{p_2D_CA_P1_target} +W _{p_2D_CA_P2_target} + ... +W _{p_2D_CA_PN_target} ) is obtained by the second color analyzer 302, and the average value (divided by N) is obtained after adding them up, which is the new full-area color target value (W _{p_2D_CA_new_target} ) to be obtained by the second color analyzer 302. In this way, the final calibration target 307 shown in FIG. 3 is obtained.

Equation 3:

W _{p_2D_CA_new_target} =(W _{p_2D_CA_P1_target} +W _{p_2D_CA_P2_target} + ... +W _{p_2D_CA_PN_target} )/N

3 shows that the panel color temperature matching correction system obtains the correction target in the offline mode, and then enters the online mode. Referring to FIG. 4 , the panel color temperature matching correction system obtains the corrected color parameters in the online mode.

Referring to the implementation example of the above equation, after the new full-region color target value (W _{p_2D_CA_new_target} ) is obtained from the panel color temperature matching and correction system in the offline mode, each display panel of each display P1, P2, ... PN can calculate the color analysis correction target (307, FIG. 3) of the display panel of each display according to the new full-region color target value (W _{p_2D_CA_new_target} ). Afterwards, as shown in the embodiment of FIG. 4 , the color values of the specific region or the full region obtained by different color analyzers (401, 402) will enter a color correction process 403, and at the same time introduce the correction target 405 obtained by the above embodiment through equation 3 to obtain the corrected color parameter 407, and then obtain the display parameter of the driving display PN.

The figure shows that taking the display PN as an example, a specific area color value (W _{c_CA_PN} ) of a specific area in the display area of the display PN is measured by a first color analyzer 401. The first color analyzer 401 is a color analyzer, and the specific area, such as the central area, is commonly used to represent the color information of the entire display PN; the panel color temperature matching and correction system then uses a second color analyzer 402 to measure the entire display area of the display PN to obtain a full area color value (W _{p_2D_CA_PN} ), and the second color analyzer 402 is a two-dimensional color analyzer.

Next, another specific area color value (W _{c_2D_CA_PN} ) corresponding to the specific area is directly converted from the global color value, which is the specific area color value in the global color value measured by the second color analyzer 402. At this time, the panel color temperature matching correction system introduces the correction target 405 obtained in the offline mode into the color correction process 403, that is, the new global color target value (W _{p_2D_CA_new_target} ) obtained by the above equation 3.

Afterwards, in the color calibration process 403, equation 4 is executed. In addition to introducing the above-mentioned global color target value ( _{Wp_2D_CA_new_target} ), the global color value generated by the first color analyzer 401 and the second color analyzer 402 and the color value of the specific area (such as the central area) are further introduced to re-correct the calibration target (originally _{Wc_CA_target} ) of each display PN display panel to obtain a new calibration target ( _{Wc_CA_PN_target} ). According to this target, the hardware parameters of the pre-gamma, color transfer matrix and post-gamma can be adjusted by the calibration parameters to achieve the color space target and the display effect that the human eye can perceive, such as white balance.

Equation 4:

W _{c_CA_PN_target} =W _{p_2D_CA_new_target} -((W _{c_2D_CA_PN} -W _{c_CA_PN} )+(W _{p_2D_CA_PN} -W _{c_2D_CA_PN} ))

Equation 4 describes the calculation process of obtaining the color target value of a specific area on the display panel of the display PN (representing each display), and refers to the flow chart of the embodiment of the panel color temperature matching correction method described in FIG. 5 .

In the embodiment of the color calibration process, a specific area in the display PN is measured by a first color analyzer to obtain a specific area color value (W _{c_CA_PN} ), which can be referred to as a first specific area color value (step S501). On the other hand, a full area color value (W _{p_2D_CA_PN} ) is measured by a second color analyzer for the display PN (step S503), and then a second specific area color value (W _{c_2D_CA_PN} ) of the same specific area as in step S501 is taken out from the full area color value. The color value of the specific area measured by the second color analyzer (step S505) can be distinguished from the first specific area color value (W _{c_CA_PN} ) obtained by the first color analyzer. The second specific area color value can be obtained, for example, by a specific algorithm based on the full area color value and then referring to the ratio between the size of the display panel and the size of the specific area that can be obtained by the first color analyzer.

At this time, a first difference (W _{c — 2D_CA_PN} -W _{c_CA_PN} ) between the first specific area color value obtained by the first color analyzer and the first specific area color value obtained by the second color analyzer for the same specific area is calculated (step S507), and a second difference (W p — _{2D_CA_PN} -W _{c_2D_CA_PN} ) between the full area color value obtained by the second color analyzer previously measuring the display PN and the second specific area color value on the display PN obtained therefrom is calculated (step S509).

Afterwards, the calibration target initially set by the first color analyzer for the display can be adjusted based on the correlation between the first difference and the second difference, for example, the sum of the differences obtained by adding the first difference and the second difference, to generate a new calibration target for calibrating the display parameters of the display.

If the sum of the first difference and the second difference (called the sum of the differences) is taken as an example, the new full-area color target value ( _{Wp_2D_CA_new_target} ) obtained according to equation 3 can be continued, and the sum of the differences between the first difference and the second difference can be subtracted from the new full-area color target value (step S511), that is, the calibration target ( _{Wc_CA_PN_target} ) of the display PN in the specific area is re-corrected (step S513). In other words, this new calibration target is suitable for the first color analyzer to perform color parameter adjustment on the specific area of each display, for example, to adjust the gamma parameter, and to adjust the color transfer parameter in the color transfer matrix (Color Transfer Matrix), to form the firmware parameters of the display chip applied to the display PN, and to correct the color performance of the corresponding display, including the chroma and brightness.

In this way, the new calibration target obtained by the panel color temperature matching calibration method allows the three color stimuli perceived by the human eye to be adjusted to the color target desired by the customer (manufacturer) when the display color adjustment is originally performed using the first color analyzer. Its characteristic is that in addition to the area near the center of the display panel, the color deviation of the surrounding part of the panel is also considered. The ultimate goal is to allow users to see images with consistent colors on the entire panel.

According to the above embodiments, in the technology of obtaining color information and adjusting the calibration target, the full-area color value and the specific-area color value of the display can be obtained as color information of various color spaces. The method described in the embodiments is not intended to limit the scope of the invention.

In summary, the panel color temperature matching calibration system described in the above embodiments is a calibration framework that achieves the same target color gamut and display perception by human eyes by obtaining full-screen chromaticity information obtained by a 2D color analyzer and partial-region chromaticity information obtained by a general color analyzer. Compared to the commonly known color calibration instruments that only calibrate a certain part of the display panel, such as the central part, which is the part that the human eye focuses on, the human eye does not only see a certain part of the panel. Therefore, if only a specific area is calibrated, the human eye may still feel a difference in the overall display result. The panel color temperature matching calibration system proposed in the disclosure additionally uses a specific color analyzer, such as a two-dimensional color analyzer (2D color analyzer). A new calibration process is used to avoid the problem that the two-dimensional color analyzer requires a longer measurement time than a traditional color analyzer (color analyzer). At the same time, the defects of the traditional color analyzer are compensated, and the calibration target of the color analyzer for each display is re-corrected. In addition to maintaining the color performance of the specific area originally considered, the obtained calibration color parameters can make the human eye have the same or similar perception of the overall display (such as color temperature, color) of the display.

The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the scope of the present invention.

Claims (8)

1. A panel color temperature matching correction system, comprising: a first color analyzer for obtaining a first specific area color value of a specific area of a display, wherein the first color analyzer is provided with a calibration target for the display; a second color analyzer, for obtaining a full-region color value of a full region of the display and a second specific-region color value corresponding to the specific region of the display; wherein a first difference between the color value of the first specific area and the color value of the second specific area is obtained, and a second difference between the color value of the entire area and the color value of the second specific area is obtained, a new color target value of the entire area is introduced, and the calibration target is adjusted according to the first difference and the second difference to generate a new calibration target for calibrating the display parameters of the display, The panel color temperature matching and calibration system obtains the new full-region color target value of the display in an offline mode to correct the calibration target of the display. The step of obtaining the new full-region color target value in the offline mode includes: Providing a plurality of displays, each display obtaining a color value of the specific area of each display through the first color analyzer; Using the second color analyzer, obtain the full-area color value of each display and the color value of the specific area corresponding to each display; For each display, calculating a difference between the color values of the specific area obtained by the first color analyzer and the second color analyzer, and adding another difference between the color value of the specific area obtained by the second color analyzer and the color value of the entire area, to obtain a sum of the two differences; According to the calibration target set by the first color analyzer in the specific area, plus the sum of the two differences, a full-area target value for each display by the second color analyzer is obtained; and An average value of the plurality of displays is calculated according to the respective full-area target values of each display to obtain the new full-area color target value. 2. The panel color temperature matching correction system according to claim 1, wherein the new correction target is applicable to the first color analyzer to perform color parameter adjustment on a specific area of each display to form a firmware parameter of a display chip applied to each display to adjust the gamma parameter and the color conversion parameter in a color conversion matrix to become the display parameter for correcting the color performance of the display. 3 . The panel color temperature matching and calibration system according to claim 1 , wherein the specific area of the display is a central area close to the center of the display panel of the display. 4. The panel color temperature matching and correction system according to claim 1, wherein the color analysis performed by the first color analyzer or the first color analyzer is white sampling of a color space, photographing the specific area or the entire area of the display to obtain relevant color temperature information, and then converting through a color temperature and color value conversion formula to obtain corresponding color information. 5. A panel color temperature matching correction method is applied to a display having a correction target. The panel color temperature matching correction method operates in an online mode. The online mode is to obtain a new full-area color target value of the display according to an offline mode to correct the correction target of the display, wherein the panel color temperature matching correction method comprises: Using a first color analyzer to obtain a first specific area color value of a specific area displayed on a display; Using a second color analyzer to obtain a full-area color value of a full area of the display; deriving a second specific region color value corresponding to the specific region from the full region color value; Obtaining a first difference between the color value of the first specific region and the color value of the second specific region, and a second difference between the color value of the entire region and the color value of the second specific region; and Introducing a new global color target value, and adjusting the calibration target according to the first difference and the second difference to generate a new calibration target for calibrating display parameters of the display, The step of obtaining the new full-area color target value in the offline mode includes: Providing a plurality of displays, each display obtaining a color value of the specific area of each display through the first color analyzer; Using the second color analyzer, obtain the full-area color value of each display and the color value of the specific area corresponding to each display; For each display, calculating a difference between the color values of the specific area obtained by the first color analyzer and the second color analyzer, and adding another difference between the color value of the specific area obtained by the second color analyzer and the color value of the entire area, to obtain a sum of the two differences; According to the calibration target set by the first color analyzer in the specific area, plus the sum of the two differences, a full-area target value for each display by the second color analyzer is obtained; and An average value of the plurality of displays is calculated according to the respective full-area target values of each display to obtain the new full-area color target value. 6. The panel color temperature matching correction method according to claim 5, wherein the first difference and the second difference are added to obtain a difference sum, and then the difference sum is subtracted from the new full-area color target value to obtain the new correction target for correcting the correction target of the display. 7. The panel color temperature matching correction method according to claim 6, wherein the new correction target is applied to the first color analyzer to perform color parameter adjustment on a specific area of each display to form a firmware parameter of a display chip applied to each display to adjust the gamma parameter and the color conversion parameter in a color conversion matrix to become the display parameter for correcting the color performance of the display. 8. The panel color temperature matching and correction method according to claim 5, wherein the color analysis performed by the first color analyzer or the first color analyzer is white sampling of a color space, photographing the specific area or the entire area of the display to obtain relevant color temperature information, and then converting through a color temperature and color value conversion formula to obtain corresponding color information.