CN112802418A

CN112802418A - Panel color temperature matching correction method and system

Info

Publication number: CN112802418A
Application number: CN201911107422.8A
Authority: CN
Inventors: 石淳元
Original assignee: Realtek Semiconductor Corp
Current assignee: Realtek Semiconductor Corp
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2021-05-14
Anticipated expiration: 2039-11-13
Also published as: CN112802418B

Abstract

A color temperature matching and correcting system and method of a panel adopts a first color analyzer for obtaining a first specific region color value of a specific region of a display, and a second color analyzer for obtaining a full region color value of the full region of the display and obtaining a second specific region color value corresponding to the specific region. Then, the difference between the first specific area color value and the second specific area color value and the other difference between the full area color value and the second specific area color value are obtained, after the difference sum is calculated, the full area color target value obtained in the off-line mode is introduced to adjust the original correction target for the specific area of the display to generate a new correction target, and the display parameters considering the color effect displayed by the full area of the display are obtained.

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 obtaining a correction target by mapping color values measured by different color analyzers to achieve a correction of a panel color temperature.

Background

The native colors of the display may still need to be adjusted to true colors, which may need to be corrected by an instrument to make the colors seen by the human eye tend to be consistent, wherein the measured data is obtained by a two-dimensional color analyzer, from which the correction can be performed.

Before the flat panel display is shipped, color correction is performed to adjust the image displayed on the flat panel display to a state close to the real color, and the color space referred to defines, for example, the "CIE 1931 color gamut diagram" established by the international commission on illumination (CIE) in 1931. However, the conventional method usually adjusts the center of the display panel, and there may still be color deviation at the edge other than the center of the display panel.

For example, a Color analyzer (Color analyzer) adopted in the conventionally proposed Color correction method can obtain the characteristics of the center or a part of the area of the display, and once the Color gamut target is determined, the Color parameters such as Pre Gamma, Color Transfer Matrix and Post Gamma, etc. can be corrected by using the characteristics of the area selected by the display to achieve the Color gamut target, such as CIE 1931 xyY Color space (CIE xyY Color space), wherein the Pre-Gamma process is to linearize the code (Non-Linear RGB) of the nonlinear target Color space to form the Linear code (Linear) of the target Color space, and then the subsequent Color Transfer Matrix performs the Linear Color space conversion, so that the original Color space converted by the Color Transfer Matrix is converted into a target Color space (Linear R ' G ' B '), the color information output by post-gamma processing includes linearizing the native panel characteristics. The corrected color parameters may then be applied in a wafer that controls the display panel therein when the display is shipped.

However, the conventional color analyzer measures along the center of the display, only obtains partial area data of the display, cannot correct the data according to the entire area of the display, and the human eye perception is the comprehensive influence of the entire display, so that even different displays with the same color correction mechanism have different human eye perceptions.

Disclosure of Invention

The disclosure discloses a panel color temperature matching correction method and a system for realizing the method, wherein 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 correction system, a first color analyzer, such as a conventional color analyzer, is configured to provide a correction target for a display, according to an embodiment of the panel color temperature matching correction system, wherein the first color analyzer is configured to obtain a first specific region color value of a specific region of the display, such as a central region near a center of a display panel of the display; the second color analyzer, such as a two-dimensional color analyzer, is used for obtaining a full-area color value of the full area of the display and obtaining a second specific-area color value corresponding to the specific area of the display.

According to the embodiment of the panel color temperature matching correction method operating therein, a first difference between the first specific region color value and the second specific region color value and a second difference between the full region color value and the second specific region color value are obtained, i.e., a new full region color target value is introduced, and the correction target is adjusted according to the first difference and the second difference to generate a new correction target for correcting the display parameters of the display.

Preferably, the new correction target is used to adjust the gamma parameter and the color conversion parameter in the color conversion matrix into a display parameter for modifying the color representation of the display.

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

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

Further, the step of obtaining a new full-region color target value in the offline mode further comprises: providing multiple displays, each of which obtains the color value of the specific region of each display through a first color analyzer, and obtains the color value of the whole region of each display and the color value of the specific region corresponding to each display through a second color analyzer, the difference between the color values of the specific region obtained by the first color analyzer and the second color analyzer and the other difference between the color value of the specific region obtained by the second color analyzer and the global color value are calculated for each display to obtain the sum of the two differences, can add the sum of the two differences according to the calibration target set by the first color analyzer in the specific area to obtain a full-area target value of the second color analyzer for each display, and then calculating an average value of the plurality of displays according to the individual full-area target value of each display to obtain a new full-area color target value.

For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for purposes of illustration and description only and are not intended to limit the invention.

Drawings

FIG. 1 shows a schematic representation of the use of a first color analyzer;

FIG. 2 shows a schematic representation of the use of a first color analyzer;

FIG. 3 is a schematic diagram of an embodiment of a panel color temperature matching correction system in an off-line mode to obtain a correction target.

FIG. 4 is a schematic diagram of an embodiment of a panel color temperature matching correction system in online mode to derive corrected color parameters;

FIG. 5 is a flowchart illustrating an embodiment of a method for color temperature matching correction of a panel.

Description of the symbols

First color analyzer 15

Display 10

Second color analyzer 20

Displays 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 flow 403

Calibration target 405

Corrected color parameters 407

Color temperature matching correction process of panel in steps S501-S513

Detailed Description

The following is a description of embodiments of the present invention with reference to specific embodiments, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The invention is capable of other and different embodiments and its several details are capable of modification and various other changes, which can be made in various details within the specification and without departing from the spirit and scope of the invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are used primarily to distinguish one element from another element or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.

The disclosure provides a panel color temperature matching correction method and a system for implementing the method, which are applied to a color correction method of a flat panel display (such as an LED backlight), different from a method of performing color adjustment only on a central part of the display (including the backlight and a display panel) when the display is delivered from a factory in the prior art, one embodiment of the proposed method adopts three color stimulus values of colors as target parameters for adjustment, and the adjustment of the rest parts is considered besides the adjustment of the original central part or partial area. The method is mainly characterized in that a two-dimensional color analyzer (2D color analyzer, called as a second color analyzer) is additionally arranged outside a conventional color analyzer (called as a first color analyzer) to perform auxiliary 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 partial areas of a display panel and causes different feelings of human eyes on different parts of the whole display.

The two-dimensional color analyzer (second color analyzer) can measure the influence of the visible angle of different areas and the color and brightness mixture among different areas on the display, so that the color information of the display obtained by the two-dimensional color analyzer is more similar to the perception of human eyes, and the problem caused by that the original color analyzer (first color analyzer) can only measure partial areas is corrected. However, since the two-dimensional color analyzer takes longer time to measure the panel area of the whole display than the conventional color analyzer, a panel color temperature matching correction method is proposed, which comprises the measurement of the second color analyzer and the first color analyzer, and the defect compensation for the measurement area and the measurement time.

The system for implementing the panel color temperature matching calibration method is provided with a first color analyzer and a second color analyzer, wherein the first color analyzer is used for obtaining color information of a central area or a specific area of a display panel in the prior art, such as (but not limited to) the operation of the invention: KONICA MINOLTA CA-310 color analyzer; the second color analyzer preferably obtains color information for the entire area of the display panel, such as (but not limiting to the operation of the invention): KONICA MINOLTA CA-2000 color analyzer, 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 color information of a central area (or other specific areas) of the display 10, and the overall pixel performance in the area, such as chroma (chromaticity) and brightness (luminance), can be adjusted according to a calibration target preset by the first color analyzer for the display. In practice, the color information may include a brightness characteristic represented by a gamma curve, and the chroma may be a parameter adjusted by the first color analyzer, such as Tristimulus values (Tristimulus values) in CIE 1931 color space, and may be three parameters derived from red (R), green (G) and blue (B).

FIG. 2 is a schematic diagram of an exemplary embodiment of a two-dimensional color analyzer used in the method for calibrating color temperature matching of a display panel. Unlike the first color analyzer 15, the second color analyzer 20 is shown as a two-dimensional color analyzer, and the second color analyzer 20 can obtain the color information of the whole area of the display panel of the display 10 by photographing or scanning at a distance from the display 10.

In the panel color temperature matching correction system applying the first color analyzer and the second color analyzer, the system can be divided into two parts, namely, an offline mode (offline mode) and an online mode (online mode), the offline mode is used to determine the human eye sensing target, and the online mode is used to correct each display by the same human eye sensing target, which is described with reference to fig. 3 and fig. 4.

Fig. 3 is a schematic view of an embodiment of a color temperature matching calibration system for obtaining a calibration target in an off-line mode, in which a plurality of displays P1, P2, … PN (at least two displays may be provided by different panel suppliers) are shown, each display obtains color information by respectively capturing and converting the color information by a first color analyzer 301 and a second color analyzer 302, and calculates a modified calibration target 307 by a multi-panel color calculator 305.

In this embodiment, each of the displays P1, P2, … PN obtains the color value of a specific region of the first color analyzer 301, the specific region may be, for example, a portion near the center of the display region of the display, the color analysis (using the first color analyzer or the second color analyzer) is a white sample of the CIE 1931 xyY color space, and the W value expressed by the following equation may be the color information obtained by converting the white color temperature information of x, y, etc. in the CIE 1931 color space.

For example, white is sampled in the xyz color space, for example, color temperature (color temperature) information is obtained by taking or scanning the color of 6500K of sunlight (x is 0.313 and y is 0.329), and the color temperature information is obtained byThe color temperature and color value conversion formula of equation 1 is calculated and converted into a color value, the general white sampling value can be in an xyz color space, equation 1 aims to convert the target white color temperature into the xyz color space, and the corrected target white is the human eye feeling, that is, the human eye feeling is converted into an actual calculation value, in order to correct the problem of inconsistent human eye feeling, equation 1 is used to convert the corrected target white into the xyz color space for operation, and a new target is corrected. Then, the value W is obtained according to the color value of the specific region of each display P1, P2, … PN_{c_CA_P1}、W_{c_CA_P2}、…W_{c_CA_PN}. The second color analyzer 302 is shown as a two-dimensional color analyzer, and the second color analyzer 302 obtains color values of the whole area of the display panel of each of the displays P1, P2, … PN, wherein the color values can also be derived from the color temperature information by operating equation 1. In this case, the full-area color value of each display is obtained, and the specific-area color value of each display in the specific area obtained by the second color analyzer is obtained, and the full-area color information of each display is obtained (W)_{p_2D_CA_P1}、W_{p_2D_CA_P2}、…W_{p_2D_CA_PN}) The specific region (e.g., the central region) obtained by the first color analyzer 301 may be targeted.

Equation 1 shows a formula for converting color temperature into x, y, etc. color values 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 specific region color values of the specific regions (e.g. the central region) of the displays P1, P2, … PN, and the value is W_{c_CA_P1}、W_{c_CA_P2}、…W_{c_CA_PN}The second color analyzer 302 also obtains the full-area color value of each display, which is W_{p_2D_CA_P1}、W_{p_2D_CA_P2}、…W_{p_2D_CA_PN}. The first color analyzer 301 has a calibration target (W) set therein_{c_CA_target})。

Thus, in the panel color temperature matching correction method, the correction target (W) can be further corrected according to_{c_CA_target}) Obtain a new correction target (W)_{p_2D_CA_new_target})307, the method runs equation 2 as in the multi-panel color calculator 305.

According to equation 2, for example, for display P1, the color value (W) of a particular region (e.g., the center region) of display P1 derived by second color analyzer 302 may be first calculated_{c_2D_CA_P1}) And the first color analyzer 301 obtains the color value (W) of the same specific region (e.g. the central region) of the display P1_{c_CA_P1}) Difference (W) of (A)_{c_2D_CA_P1}-W_{c_CA_P1}) (ii) a Calculating the second color analyzer 302 yields the full area color value (W) of display P1_{p_2D_CA_P1}) And the second color analyzer 302 to obtain the color value (W) of the specific region of the display P1_{c_2D_CA_P1}) Another difference (W) between_{p_2D_CA_P1}-W_{c_2D_CA_P1}) 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}) Plus a target value (W) set in a specific area (e.g., a central area) from the first color analyzer_{c_CA_target}) Thus, a full-area target value (W1) for display P1 from second color analyzer 302 can be obtained_{p_2D_CA_P1_target})。

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})

from equation 2, the full-area target value (W) generated by the second color analyzer 302 for display P2 can be derived by analogy_{p_2D_CA_P2_target}) Until a full-area target value (W) is generated for the display PN_{p_2D_CA_PN_target})。

In the multi-panel color calculator 205, as shown in equation 3, the sum total (W) of the full-area target values of the display panels in the respective displays P1, P2, … PN is obtained by the second color analyzer 302_{p_2D_CA_P1_target}+W_{p_2D_CA_P2_target}+…+W_{p_2D_CA_PN_target}) After additionObtain the average (divided by N), which is the new full-area color target value (W) for the second color analyzer 302_{p_2D_CA_new_target}). Thus, the final calibration target 307 is shown in FIG. 3.

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

after the panel color temperature matching correction system shown in fig. 3 obtains the correction target in the off-line mode, the panel color temperature matching correction system enters the on-line mode, and then the panel color temperature matching correction system shown in fig. 4 is referred to the on-line mode to obtain the corrected color parameters.

Referring to the implementation example of the above equation, the new full-area color target value (W) is obtained from the panel color temperature matching correction system in the off-line mode_{p_2D_CA_new_target}) Thereafter, each display panel of each display P1, P2, … PN can be adjusted according to the new full-area color target value (W)_{p_2D_CA_new_target}) The correction target for the color analysis of the display panel of each display is calculated (307, fig. 3). Then, as shown in fig. 4, the color values of the specific region or the whole region obtained by the different color analyzers (401,402) enter a color correction process 403, and a correction target 405 obtained by equation 3 in the above embodiment is introduced to obtain corrected color parameters 407, and further obtain display parameters for driving the display PN.

The first color analyzer 401 measures a specific region color value (W) of a specific region in the display region of the display PN, taking the display PN as an example_{c_CA_PN}) The first color analyzer 401 is a color analyzer, and a specific area such as a central area is a region commonly used to represent the PN color information of the whole display; the panel color temperature matching calibration system then measures the entire display area of the display PN with the second color analyzer 402 to obtain a total area color value (W)_{p_2D_CA_PN}) The second color analyzer 402 is, for example, a two-dimensional color analyzer.

Then, directly converting the color value of the whole region to obtain the corresponding color valueAnother specific region color value (W) of the specific region_{c_2D_CA_PN}) This is the specific region color value among the full region color values 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 off-line mode, i.e. the new full-area color target (W) obtained by the above equation 3, into the color correction process 403_{p_2D_CA_new_target})。

Thereafter, in the color correction process 403, equation 4 is performed, except that the above-mentioned full-region color target value (W) is introduced_{p_2D_CA_new_target}) In addition, the full-area color values and the specific area (e.g. the central area) color values generated by the first color analyzer 401 and the second color analyzer 402 are introduced to revise the calibration targets (originally, W) of the PN display panels of each display_{c_CA_target}) To derive a new correction target (W)_{c_CA_PN_target}) According to the object, the hardware parameters of the Pre-Gamma (Pre Gamma, Color Transfer Matrix (Color Transfer Matrix) and Post-Gamma (Post Gamma) can be adjusted by the correction parameters to achieve the Color space object and the display human eye can feel the same display effect, 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 for obtaining the color target value of a specific area on the display panel of the display PN (representing each display), and the flowchart of the embodiment of the panel color temperature matching correction method described with reference to fig. 5 is also included.

In the embodiment of color calibration process, the first color analyzer measures the specific region in the display PN to obtain the color value (W) of the specific region_{c_CA_PN}) And may be referred to as a first region-specific color value (step S501). On the other hand, the full-area color value (W) measured by the second color analyzer for the display PN_{p_2D_CA_PN}) (step S503), and then the color value (W) of the second specific region in the same specific region as that in step S501 is extracted from the color values of the whole region_{c_2D_CA_PN}) The specific areaThe color value of (A) is measured by the second color analyzer (step S505), and the color value of the first specific region (W) obtained by the first color analyzer_{c_CA_PN}) And (6) distinguishing. The manner of obtaining the color value of the second specific region can be obtained, for example, by performing a specific algorithm according to the color value of the whole region and referring to the proportional relationship between the size of the display panel and the size of the specific region available to the first color analyzer.

At this time, a first difference (W) between the color value of the first specific region obtained by the first color analyzer and the color value of the first specific region obtained by the second color analyzer is calculated_{c_2D_CA_PN}-W_{c_CA_PN}) (step S507), and calculating a second difference (W) between the full-area color value previously measured by the second color analyzer on the display PN and the second specific-area color value on the display PN obtained therein_{p_2D_CA_PN}-W_{c_2D_CA_PN}) (step S509).

Then, the calibration target set by the initial first color analyzer for the display may be adjusted according to a correlation between the first difference and the second difference, for example, a sum of the differences obtained by adding the first difference and the second difference, so as 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 difference sum) is taken as an example, the new full-region color target value (W) obtained according to equation 3 can be continued_{p_2D_CA_new_target}) The new full-area color target value is subtracted by the sum of the first difference and the second difference (step S511), so that the correction target (W) of the display PN in the specific area is re-corrected_{c_CA_PN_target}) (step S513), that is, the new calibration target is applied to the first Color analyzer to perform Color parameter adjustment on a specific area of each display, for example, to adjust the gamma parameter, and to adjust the Color conversion parameter in the Color conversion Matrix (Color Transfer Matrix), so as to form the firmware parameter applied to the display chip of the display PN, so as to modify the Color representation, including chroma and brightness, of the corresponding display.

Therefore, the new calibration target obtained by the panel color temperature matching calibration method can adjust the tristimulus stimulus felt by human eyes to the color target wanted by a client (manufacturer) when the first color analyzer is used for carrying out the color adjustment of the display originally.

According to the above embodiments, in the technique of obtaining color information and adjusting the calibration target, the color values of the full region and the specific region of the display can be obtained from color information of various color spaces, and the manner described in the embodiments is not intended to limit the implementable scope of the invention.

In summary, the panel color temperature matching correction system described in the above embodiment is a correction structure that obtains full-screen chromaticity information by knowing a two-dimensional color analyzer (2D color analyzer) and partial-area chromaticity information obtained by a general color analyzer (color analyzer) to achieve the same target color gamut and human eye feeling of the display. Compared with the conventional color correction instrument which only corrects a certain part of the display panel, such as the central part, which is a part that the human eyes are more attentive than the conventional color correction instrument, but the human eyes not only see a certain part of the panel, so that the human eyes still may feel the difference of the whole display result if only the specific area is corrected, the panel color temperature matching correction system proposed in the disclosure additionally adopts a specific color analyzer, such as a two-dimensional color analyzer (2D color analyzer), wherein the problem that the two-dimensional color analyzer needs longer measurement time than the conventional color analyzer (color analyzer) is avoided through a new correction process, and the defects in the measurement of the conventional color analyzer are compensated, and the correction target of each display by the color analyzer is re-corrected, and besides the color expression of the originally considered specific area is still maintained, the obtained corrected color parameters can enable the human eyes to display the whole display of the display (such as color temperature, color, and the like) of the, Color) has the same or similar perception.

The disclosure is only a preferred embodiment of the invention and should not be taken as limiting the scope of the invention, so that the invention is not limited by the disclosure of the specification and drawings.

Claims

1. A panel color temperature matching correction system, comprising:

a first color analyzer for obtaining a first specific region color value of a specific region of a display, wherein the first color analyzer has a calibration target for the display;

a second color analyzer for obtaining a full-area color value of a full area of the display and a second specific-area color value corresponding to the specific area of the display;

wherein, a first difference between the first specific area color value and the second specific area color value is obtained, a second difference between the full area color value and the second specific area color value is obtained, a new full area color target value is introduced, and the correction target is adjusted according to the first difference and the second difference to generate a new correction target for correcting the display parameters of the display.

2. The system of claim 1, wherein the new calibration target is adapted to perform color parameter adjustment on specific regions of each display by the first color analyzer to form firmware parameters applied to a display chip of each display for adjusting gamma parameters and color conversion parameters in a color conversion matrix into display parameters for modifying color representation of the display.

3. The panel color temperature matching correction system of claim 1, wherein the specific region of the display is a central region near the center of the display panel of the display.

4. The system of claim 1, wherein the color analysis performed by the first color analyzer or the first color analyzer is a white sample of a color space, the specific region or the whole region of the display is photographed to obtain correlated color temperature information, and the correlated color temperature information is converted by a color temperature and color value conversion formula to obtain corresponding color information.

5. The panel color temperature matching correction system of any one of claims 1-4, wherein the panel color temperature matching correction system obtains the new full-area color target value of the display in an off-line mode for correcting the correction target of the display, the step of obtaining the new full-area color target value in the off-line mode comprises:

providing a plurality of displays, wherein each display obtains the color value of the specific area of each display through the first color analyzer;

obtaining the color value of the whole area of each display and the color value of the specific area corresponding to each display by the second color analyzer;

calculating the difference of the first color analyzer and the second color analyzer to the color value of the specific area and adding 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 for each display;

adding the sum of the two differences according to the correction target set by the first color analyzer in the specific area to obtain a full-area target value of the second color analyzer for each display; and

calculating an average value of the plurality of displays according to the respective full-area target value of each display, and obtaining the new full-area color target value.

6. A panel color temperature matching correction method is applied to a display, the display is provided with a correction target, the panel color temperature matching correction method operates in an online mode, the online mode is used for obtaining a new full-area color target value of the display according to an offline mode so as to correct the correction target of the display, and the panel color temperature matching correction method comprises the following steps:

obtaining a first specific area color value of a specific area displayed by a display by using a first color analyzer;

obtaining a full-area color value of a full area of the display by a second color analyzer;

obtaining a second specific region color value corresponding to the specific region from the full region color value;

obtaining a first difference between the first specific region color value and the second specific region color value and a second difference between the full region color value and the second specific region color value; and

introducing a new full-area color target value, and adjusting the correction target according to the first difference and the second difference to generate a new correction target for correcting the display parameters of the display.

7. The method of claim 6, wherein the first difference and the second difference are added to obtain a sum of differences, and the new target is subtracted from the new target value to obtain the new target for correcting the target of the display.

8. The method of claim 7, wherein the new calibration target is adapted to the first color analyzer to perform color parameter adjustment on specific regions of each display, thereby forming firmware parameters applied to a display chip of each display for adjusting gamma parameters and color conversion parameters in a color conversion matrix into display parameters for modifying color representation of the display.

9. The method of claim 6, wherein the color analysis performed by the first color analyzer or the first color analyzer is a white sample of a color space, the specific region or the whole region of the display is photographed to obtain correlated color temperature information, and then the correlated color temperature information is converted by a color temperature and color value conversion formula to obtain corresponding color information.

10. The panel color temperature matching correction method according to any one of claims 6 to 9, wherein the step of deriving the new full-area color target value in the offline mode comprises: