TW202007130A - Calibration method of display, sampling display and calibration display - Google Patents

Abstract

A calibration method of display is provided. The method includes: selecting at least one sampling display in displays with the same display panel; calibrating the sampling display using a image calibrating device and generate an upload data; uploading the upload data to a remote database, wherein the remote database generate a statistical calibration data; selecting a calibration display from the displays and provides a downloading data to calibrate the calibration display, wherein the remote database provide the downloading data from the statistical calibration data. A sampling display and a calibration display are also provided.

Description

Calibration method of display device, sampling display device and calibration display device

The invention relates to a correction method and a display device; in particular, to a color correction method of a display device and a display device capable of correcting color.

Desktop computers and notebook computers are now widely used in people's daily life and work. At work, people can read and edit electronic documents on the screens of these computer devices, and can also observe, design or edit electronic images or videos, or run games to engage in entertainment activities or competitions on the screen. In these applications, different application areas will require different brightness and color requirements.

However, the existing flat display device uses, for example, Liquid Crystal Display (LCD) technology, which includes a display panel as a light valve and a backlight module as a light source. As the operating time continues to increase, the components of the display panel and the backlight module described above will also be consumed, which will affect the brightness and color performance of the display device. Especially when users need to use these display devices for digital photo editing or digital image design, such applications cannot allow color deviation of the display screen.

Although the existing display device can already correct the color and brightness by an external color correction device, the price of the above color correction device is high, and considering its frequency of use, it is still an expense that does not meet the cost for the user. Therefore, how to provide a more convenient color correction method for the display device is still one of the problems to be solved in display technology.

The calibration method of the present invention can use the data collected by the remote database to calibrate multiple display devices; the sampling display device of the present invention can upload data to allow the remote database to provide data to the calibration display device; the calibration display of the present invention The device can correct its color based on the data from the remote database.

The calibration method of the present invention The calibration method of the display device of the present invention includes: a. Selecting at least one sampling display device among a plurality of display devices of the same type of display panel; b. Using a picture calibration device to calibrate the sampling display device and generating a Upload data; c. upload and upload data to a remote database, the remote database generates a statistical correction data based on the uploaded data; d. select a calibration display device from multiple display devices of the same type of display panel, remote database The self-statistical correction data provides a downloaded data to the correction display device for correction.

In an embodiment of the invention, the uploaded data and the statistical correction data include a first color compensation value and an operating time relative to the first color compensation value. Step d further includes correcting the first color compensation value to a second color compensation value according to the operation time of the calibration display device and the operation time of the statistical correction data. The download data includes the second color compensation value, and the display device is corrected to correct the second color compensation value. The above-mentioned operating time is the cumulative time of operation of the sampling display device or the calibration display device.

In an embodiment of the present invention, the above-mentioned step c further includes: acquiring multiple upload data from different time or multiple different sampling display devices; the first color compensation value according to the upload data corresponds to the operating time Calculates a calibration curve. The step of correcting to the second color compensation value further includes: providing a second color compensation value from the self-calibration curve according to the operating time of the corrected display device.

In an embodiment of the present invention, the above-mentioned sampling display device includes: a first display panel, a first backlight module and a first brightness detection unit; step b further includes: b1. using a first brightness value Drive the first backlight module; b2. The first brightness detection unit measures a first brightness measurement value of the first backlight module; b3. When the first brightness measurement value is not equal to a first standard brightness measurement Value, increase the first brightness value, repeat step b2 until the first brightness measurement value is equal to the first standard brightness measurement value, and record the change in the first brightness value as a first brightness compensation value; b3. Use The picture correction device measures a first color measurement value on a test picture displayed by the sampling display device; b4. When the first color measurement value is not equal to a first standard color value, changes the color of the first display panel, Repeat step b3 until the first color measurement value is equal to the first standard color value, and record the color change amount of the first display panel as a first color compensation value; and b5. The first brightness compensation value and the first color The compensation value and the operating time of the sampling display device are recorded to the uploaded data. The above-mentioned operation time is the cumulative time of operation of the sampling display device or the calibration display device.

In an embodiment of the present invention, the aforementioned calibration display device further includes a second backlight module and a second brightness detection unit. After step d, it also includes: d1. Driving the second backlight module with a second brightness value; d2. The second brightness detection unit measures a second brightness measurement value from the second backlight module; d3. Compare the second A brightness difference is obtained between the brightness measurement value and a second standard brightness measurement value, and the second brightness value is increased until the second brightness measurement value is the same as the second standard brightness measurement value; d4. Corresponding to the download data reading The third color compensation value of the second standard brightness measurement value; and d5. The third color compensation value compensates the color for the corrected display device.

The sampling display device of the present invention is corrected correspondingly to a picture correction device. The sampling display device includes: a first display panel and a first access unit. The first display panel is used to display a test picture. The picture correction device detects the test picture, corrects the first display panel and generates an upload data. The first access unit connects to a remote database and uploads the uploaded data to the remote database.

In an embodiment of the invention, the above-mentioned sample display device further includes a first backlight module, a first brightness detection unit, and a first processing unit. The first processing unit is connected to the first backlight module and the first brightness detection unit. When the first backlight module is driven with a first brightness value, the first brightness detection unit measures a first brightness measurement value from the first backlight module. When the first brightness measurement value is not equal to a first standard brightness measurement value, the first processing unit increases the first brightness value by a first brightness compensation value until the first brightness measurement value is equal to the first standard brightness measurement value. The first processing unit stores the first brightness compensation value in the uploaded data and uploads it to the remote database via the first access unit.

The calibration display device of the present invention includes a second display panel and a second access unit. The second access unit is connected to the remote database, and the remote database has a statistical correction data. The second access unit obtains a download data from the statistical correction data of the remote database, and corrects the second display panel according to the download data. The remote database collects a plurality of upload data uploaded by the display device of the same display panel as the second display panel, and generates statistical correction data based on the uploaded data.

In an embodiment of the invention, the aforementioned calibration display device further includes a second storage unit. The second storage unit stores the operating time of the calibration display device. The second access unit obtains the operating time from the second storage unit and uploads it to the remote database. The remote database obtains a second color compensation value from the statistical correction data according to the operating time. The download data includes the second color compensation value, and the second display panel corrects its color with the second color compensation value.

In an embodiment of the present invention, the aforementioned calibration display device further includes a second backlight module, a second brightness detection unit, and a second processing unit. When the second access unit obtains the download data, it drives the second backlight module with a second brightness value. The second brightness detection unit measures the light emitted by the second backlight module and provides a second brightness measurement value. The second processing unit receives the second brightness measurement value, and when the second brightness measurement value is different from a second brightness standard measurement value, the second brightness measurement value is increased by a brightness difference value to enable the second brightness measurement The value is the same as the brightness standard measurement value. The processing unit reads a third color compensation value corresponding to the brightness standard measurement value and the brightness difference value in the download data, and compensates the color for the corrected display device with the third color compensation value.

As can be seen from the above, the display device calibration method proposed by the present invention can use a remote database to provide data for calibration of multiple display devices of the same type. The sampling display device provided by the present invention can provide data for the remote database to generate statistical correction data, and allows other display devices of the same type to generate data for the correction display device to correct. The calibration display device provided by the present invention can obtain data calibration from a remote database.

DD1‧‧‧Download information

L1~L5‧‧‧Light

SCD1‧‧‧Statistical correction data

UD1, UD2‧‧‧ upload information

100‧‧‧Display calibration system

120, 120A, 120B ‧‧‧ picture correction device

130‧‧‧ Remote database

140, 140A, 140B, 140C, 240C ‧‧‧ display device

141A, 141B, 141C, 241C ‧‧‧ display panel

142A, 142B, 142C, 242C ‧‧‧ access unit

143A, 143B, 243C ‧‧‧ backlight module

144B, 244C‧‧‧Brightness detection unit

145A, 145B, 245C‧‧‧ processing unit

146A, 146B, 246C‧‧‧ storage unit

1 is a schematic diagram of a display correction system in the first embodiment of the present invention; FIG. 2 is a schematic diagram of a sampling display device in the first embodiment of the present invention; FIG. 3 is a flowchart of a method for providing a first brightness compensation value; FIG. 4 is a provision The first color compensation value and the flowchart of the method of uploading data; FIGS. 5A and 5B are schematic diagrams of statistical correction data according to an embodiment of the present invention; FIGS. 6A and 6B are schematic diagrams of a calibration display device according to an embodiment of the present invention.

The correction method proposed by the present invention can be applied to, for example, a liquid crystal display device, an organic light-emitting diode display device, or a miniature light-emitting diode display device, and it is preferable to periodically correct the color of the display device to achieve accurate color display Effect display device. In the following embodiments, a system composed of a display device and a remote database will be used as an example to explain the calibration method, sampling display device, and calibration display device provided by the present invention.

Referring to FIG. 1, in the first embodiment of the present invention, the display correction system 100 includes a remote database 130, a plurality of display devices 140A, 140B, and 140C having the same type of display panel, and a frame correction device 120. The display panels of these display devices 140 are, for example, liquid crystal display panels, but the invention is not limited to the types of display panels, and the display panels of the display devices 140A to C belong to the same category, preferably display panels made from the same batch of materials and manufacturing processes . Since the display devices 140A-C are formed by the same display panel, they can be used as the sampling display device or the calibration display device of the present invention. In this embodiment, the display device 140A and the display device 140B are used as a sampling display device; and the display device 140C is used as a calibration display device as an example. On the other hand, the calibration method proposed by the present invention does not limit the number of sampling display devices and calibration display devices. In this embodiment, for example, two sampling display devices 140A, 140B and one calibration display device 140C are used as examples.

In detail, the calibration method of this embodiment selects the display devices 140A and 140B as the sampling display devices among the display devices formed by the same type of display panel; and selects the display device 140C as the calibration display device. The sample display device 140A is corrected by the picture correction device 120A and generates an upload data UD1; the sample display device 140B is corrected by the picture correction device 120B and generates an upload data UD2.

These uploaded data UD1, UD2 are uploaded to the remote database 130 via, for example, the Internet or the Internet of Things, and the remote database 130 is, for example, a server; preferably, for example, a server device located at the original factory. The remote database 130 generates a statistical correction data SCD1 based on the uploaded data UD1, UD2, where the statistical correction data SCD1 includes information corresponding to the uploaded data UD1, UD2, and may also include the results of the calculations performed by the uploaded data UD1, UD2 However, the present invention is not limited to this, and examples will be described below.

The remote database 130 can provide download data to the calibration display device 140 from the statistical calibration data SCD1. For example, the remote database 130 of this embodiment can be downloaded according to the needs of the calibration display device. For example, the calibration display device 140C provides the model and usage parameters to the remote database 130, and the statistical correction data SCD1 provides the download after calculation The data DD1 is given to the calibration display device 140C, so that these calibration display devices 140C can be corrected by the download data DD1 received by them.

In the display calibration system 100 of this embodiment, the upload data generated by the sampling display devices 140A and 140B through the picture calibration devices 120A and 120B can be provided to the remote database 130, and the remote database 130 generates Statistical correction data, and according to the statistical correction data, download data is generated to the correction display device 140C. With the calibration method of this embodiment, the calibration display device 140C can also calibrate the image without the image calibration device 120, and since the display panels of the sampling display devices 140A and 140B and the display panel of the calibration display device 140C belong to the same category, the remote The download data provided by the database allows the calibration display device 140 to calibrate the decline of the display panel over time to maintain a good display effect.

On the other hand, the sample display devices 140A, 140B of this embodiment each include an element for uploading to upload the above-mentioned upload data UD1, UD2. In detail, the sample display device 140A of this embodiment includes a first display panel 141A and a first access unit 142A; the sample display device 140B includes a first display panel 141B and a first access unit 142B, wherein the first access unit 142A and 142B are connected to the remote database 130 respectively.

When the frame correction device 120A corrects the first display panel 141A of the sampling display device 140A and generates the upload data UD1, the sample display device 140A uploads the upload data UD1 to the remote database 130 via the first access unit 142A. Similarly, when the image correction device 120B corrects the first display panel 141B and generates the upload data UD2, the first access unit 142B uploads the upload data UD2 to the remote database 130. The first access unit 142A and the first access unit 142B are connected to the remote database 130 through the Internet or the Internet of Things, for example. The present invention is not limited to the connection between the first access unit and the remote database.

The sampling and display devices 140A and 140B of the present invention upload and upload data UD1 and UD2 to the remote database 130 after being corrected by the picture correction device 120. The remote database 130 creates statistical correction data by collecting these uploaded data UD1 and UD2 SCD1, so that the remote database 130 can provide download data DD1 by the statistical correction data SCD1 for other calibration display devices 140C having the same type of display panel for calibration.

The calibration display devices 140C of the first embodiment of the present invention also each include a component for downloading to download the aforementioned download data DD1. In detail, the calibration display device 140C of this embodiment includes a second display panel 141C and a second access unit 142C, wherein the second access unit second access unit 142C is connected to the remote database 130.

Since the remote database 130 of this embodiment collects the uploaded data UD1, UD2 uploaded by the display devices 140A, 140B of the first display panels 141A, 141B of the same type as the second display panel 141C to generate statistical correction data SCD1, statistical correction The data SCD1 can also generate download data DD1 for the second display panel 141C. The calibration display device 140C can obtain the download data DD1 from the statistical calibration data SCD1 of the remote database 130 via the second access unit 142C to calibrate the second display panel 141C.

The calibration display device 140C of the present invention can obtain the download data DD1 corresponding to the second display panel 141C from the remote database, and can be corrected by the download data DD1 without connecting to the picture calibration device 120. Since the download data DD1 comes from the statistical correction data SCD1, and the statistical correction data SCD1 is generated from the first display panels 141A, 141B of the same type as the second display panel 141C of the correction display device 140C, the correction display corrected by the download data DD1 The second display panel 141C of the device 140C can maintain a good display effect.

The first access unit 142A, 142B and the second access unit 142C described in the above embodiments may be directly connected to the remote database 130 via wired or wireless means, or may be via these display devices 140A, 140B The external host connected to the 140C is connected to the remote database 130. The present invention is not limited to the connection between the access unit and the remote database.

The detailed technical features of the sampling display devices 140A, 140B and the calibration display device 140C in the embodiment of the present invention will be further described below. Taking the sample display device 140A as an example, please refer to FIG. 2, the sample display device 140A further includes a first backlight module 143A, a first brightness detection unit 144A, and a first processing unit 145A, wherein the processing unit 145A is adapted to be connected to the frame correction装置120A.

The sample display device 140A of this embodiment generates a first color compensation value via the first processing unit 145A and the image correction device 120A. Referring to FIG. 2, the light beam emitted by the first backlight module 143A can be formed into an image light beam L1 through the first display panel 141A, and the image correction device 120A can measure the image light beam L1 on the surface where the image light beam L1 forms an image to generate a first A color measurement value. The first processing unit 145A compares the first color measurement value with the first standard color value. When the first color measurement value generated by the image beam L1 measured by the image correction device 120A is different from the first standard color value, the first processing unit 145A repeatedly adjusts the color of the first display panel 141A, and then passes the screen The calibration device 120A measures until the first color measurement value is the same as the first standard color value, and when the first color measurement value reaches the first standard color value, the color change amount of the first display panel 141A is recorded as a first Color compensation value.

The above-mentioned method of adjusting the color of the first display panel 141A is, for example, adjusting the voltage of the data signal corresponding to each color in the pixel, that is, the voltage applied to the pixel electrode; it is preferable to correct the three primary colors red, green, and blue respectively The data signal, that is, the aforementioned first color compensation value includes the first red compensation value, the first green compensation value, and the first blue compensation value, and the color compensation value will be described in detail below. When the first color compensation value is generated, the first processing unit 145A stores the first color compensation value in the upload data and uploads it to the remote database 130 via the first access unit 142A.

The sample display device 140A of this embodiment may also generate a first brightness compensation value through the first brightness detection unit 144A. The first brightness detection unit 144A is disposed in the sampling display device 140A, and is adapted to detect the light L2 from the first backlight module 143A and generate a brightness measurement value.

When the first backlight module 143A is driven with a first brightness value, the first brightness detection unit 144A measures a first brightness measurement value from the first backlight module 143A. When the first brightness measurement value is less than a first standard brightness value corresponding to the first brightness value, the first processing unit 145A increases the first brightness value, and then the first brightness detection unit 144A measures the first brightness again Measured value. The first processing unit 145A repeatedly adjusts the first brightness value and measures the new first brightness measurement value through the first brightness detection unit 144A until the first brightness measurement value is equal to the first standard brightness value, and the first processing unit 145A Then record the change amount of the first brightness value as the first brightness compensation value, and store the first brightness compensation value in the uploaded data. In other words, the first processing unit 145A corrects the first brightness value to be provided to the first backlight module 143A by the first brightness compensation value, so that the light emitted by the first backlight module 143A maintains the same brightness and quality.

Further, when the sampling and display device 140A of this embodiment calibrates the first display panel 141A and the first backlight module 143A, the first backlight module 143A is actually calibrated before the first display panel 141A is calibrated. Please refer to FIG. 3, which illustrates the flow of the calibration method for generating the uploaded data by using the image calibration device 120A to calibrate the sample display device 140A in the first embodiment. When the sampling display device 140A starts calibration, the first processing unit 145A drives the first backlight module 143A with the first brightness value (step S11), so that the first brightness detection unit 144A measures the first from the first backlight module 143A Brightness measurement value (step S12). After obtaining the first brightness measurement value from the first brightness detection unit 144A, compare whether the first brightness measurement value is the same as the first standard brightness value (step S13), where the first standard brightness value is, for example, the sample display device 140A in The first brightness measurement value measured by the first backlight module 143A is driven by the first brightness value at the factory.

When the first brightness measurement value is lower than the first standard brightness value, it means that the first backlight module 143A has material loss and the brightness when the first brightness value is driven is lower than that when it is shipped. At this time, the first brightness value is increased (step S14) to drive the first backlight module 143A, and then measured by the first brightness detection unit 144A to obtain a new first brightness measurement value. The first processing unit 145A of this embodiment repeats the above steps S12, S13, and S14 until the first brightness measurement value is the same as the first standard brightness value, and then records the value of the first brightness value increased during this correction as the first A brightness compensation value (step S15). After obtaining the first brightness compensation value, color correction is then performed.

Referring to FIG. 4, in this embodiment, after obtaining the first brightness compensation value, the first display panel 141A displays a test screen (step S21 ), where the test screen includes presetting the gray level value of the first display panel 141A The value and the preset value are to set the test brightness value of the first backlight module 143A. The image correction device 120A measures the first color measurement value from the test image displayed on the sample display device 140A (step S22), and the first processing unit 145A obtains the first color measurement value from the image correction device 120A and compares the first color Whether the measurement value is the same as the first standard color value (step S23), where the first standard color value is, for example, the first color measurement value measured when the sample display device displays the test screen at the factory.

When the first color measurement value is different from the first standard color value, it means that the material of the first display panel 141A has wear-out or aging and the light transmittance is different from that at the time of shipment. At this time, the first processing unit 145A adjusts the first display panel 141A (step S24). In the calibration method of this embodiment, the adjustment method of the first display panel 141A is, for example, to adjust the voltage intensity for driving the first display panel 141A for application to the pixel electrodes. Then, the first processing unit 145A obtains the new first color measurement value through the picture correction device 120A. The first processing unit 145A repeats the above steps S22, S23, and S24 until the first color measurement value is the same as the first standard color value, and the first processing unit 145A generates the first color compensation according to the adjustment value of the first display panel 141A corrected this time value.

Through the above steps, the first processing unit 145A successively obtains the first brightness compensation value and the first color compensation value, and provides the uploaded data to the remote database 130 according to these compensation values (step S26). In this embodiment, the uploaded data includes, for example, the first color compensation value, and may also include the first brightness compensation value and the first color compensation value, and the invention is not limited thereto.

On the other hand, the sample display device 140A of this embodiment further includes a first storage unit 146A for storing the operation time of the sample display device 140A, that is, after the sample display device 140A is shipped from the factory or after purchase, and after being turned on for the first time The cumulative display time. The first processing unit 145A obtains the above-mentioned operation time from the first storage unit 146A to store in the upload data, so that each first color compensation value in the upload data has a corresponding operation time. The first storage unit 146A of this embodiment is also connected to a timing control circuit (Timing Controller) of the sampling and display device 140A, for example, to obtain the operating time. However, the present invention is not limited to this, and those with ordinary knowledge in the art can apply existing related component records 2. Obtain the operating time of the sample display device 140A.

In the first embodiment of the present invention, the remote database 130 generates statistical correction data SCD1 after obtaining the uploaded data. For example, please refer to FIG. 5A, for example, taking the color compensation value of one of the primary colors as an example, the remote database 130 of this embodiment obtains operating time from the above-mentioned sampling display device 140A or sampling display device 140B at different times, for example For the first color compensation values C1, C3, and C6 of t1, t3, and t6, the statistical correction data SCD1 includes, for example, these three sets of data.

In the calibration method of this embodiment, before the remote database 130 provides download data to the above-mentioned calibration display device 140C, it will first obtain the model and operating time of these calibration display devices. The first color compensation value C1, C3 or C6 is corrected as the second color compensation value according to the model and operation time of these calibration display devices and the operation time in the statistical correction data SCD1 for the calibration display device 140 to correct.

For example, referring to FIG. 5A, when the operating time of the above-mentioned corrected display device 140C is t2, the calibration method of this embodiment may use, for example, interpolation to correct the second color compensation corresponding to the operating time t2 Value C2. The second color compensation value C2 is provided to the correction display device 140C for correction, so that the display panel of the correction display device 140C can maintain good picture quality. Based on the statistical correction data SCD1 of this embodiment, the correction device 140C can also obtain the second color compensation values C4, C5 from the statistical correction data SCD1 at different operating times t4, t5, that is, the correction display device 140C can perform regular or non-periodic Regular color correction.

The statistical correction data SCD1 of the embodiment of the present invention is not limited to the above-mentioned embodiment. For example, after the remote database 130 obtains these first color compensation values and their corresponding operating times, the calibration method of the embodiment of the present invention can also calculate a calibration curve for these data along the time axis corresponding to the operating time . Referring to FIG. 5B, taking the three first color compensation values as an example, the upload data collected by the remote database 130 includes, for example, a red compensation value R1, a green compensation value G1, and a blue compensation value B1 that operate at t1. The red compensation value R2, the green compensation value G2, and the blue compensation value B2 at the time t2, and the red compensation value R3, the green compensation value G3, and the blue compensation value B3 at the operation time t3 are determined by regression analysis or curve On the basis of these data, Heli obtains the red correction curve LR, the green correction curve LG, and the blue correction curve LB.

The statistical calibration data SCD1 of the remote database 130 includes these calibration curves LR, LG, and LB. After the remote database 130 obtains the operating time of the calibration display device 140 from the calibration display device 140 described above, it can use these calibration curves LR , LG and LB provide corresponding second color compensation values.

Further, after obtaining these calibration curves LR, LG, and LB, the statistical calibration data SCD1 can also estimate the future second color compensation value based on these calibration curves LR, LG, and LB, that is, the display of the same type of display panel The second color compensation value after the maximum operating time tn in the device.

In the embodiment of the present invention, the remote database 130 can further directly provide the statistical correction data SCD1 as download data to the correction display device 140, which will be described together with the correction display device 140C.

Taking the aforementioned calibration display device 140C as an example, please refer to FIG. 6A. In the first embodiment of the present invention, the calibration display device 140C includes a second display panel 141C, a second access unit 142C, and a second backlight module 143C. The second processing unit 145C and the second storage unit 146C. The second storage unit 146C stores the operating time of the calibration display device 140C. The second processing unit 145C can obtain the operating time from the second storage unit 146C and provide it to the remote database 130.

After the second processing unit 145C provides the operating time to the remote database 130, the remote database 130 provides the download data including the second color compensation value to the calibration display device 140C in the above-described manner, and the second processing unit 145C The second display panel 141C is corrected with this second color compensation value, so that the display light L3 can have the same quality as when shipped from the factory. Specifically, the second processing unit 145C corrects the voltage value of the display electrode used by the second display panel to control the light transmittance by the second color compensation value.

On the other hand, when the upload data from the above-mentioned sampling and display devices 140A and 140B includes the first brightness compensation value, the remote database 130 can also record the statistical correction data SCD1 according to the operating time according to the above-mentioned method, and the statistical correction data SCD1 may also correct the first brightness compensation value to the second brightness compensation value according to the operation time of the calibration display device 140C. When the second processing unit 145C obtains the second brightness compensation value through the second access unit 142C, the second backlight module 143C can be corrected with the second brightness compensation value.

The present invention is not limited to the above-mentioned method of calibrating the display device 140C. In other embodiments, the display device 140C can directly obtain the download data containing the statistical correction data SCD1 via the second access unit 142C, and the second process The unit 145C then corrects the first color compensation value in the statistical correction data SCD1 according to the operating time, or obtains the second color compensation value according to the correction curve in the statistical correction data SCD1. That is to say, the calibration display device 140C of the embodiment of the present invention can also download statistical calibration data directly from the remote database 130 to correct or calculate the second color compensation value corresponding to the operating time in its own processing unit 145C.

As can be seen from the above, through the statistical correction data SCD1 in the remote database 130, the correction display device 140C including the same second display panel 140C as the first display panel 141A can directly download the second color compensation value in the data The second display panel 141C can be corrected, and the second backlight module 143C can be corrected according to the second brightness compensation value in the download data. However, the calibration display device proposed by the present invention is not limited to the calibration display device 140C. Please refer to FIG. 6B. In other embodiments of the present invention, the calibration display device 240C includes not only the second display panel 241C, the second access unit 242C, The second backlight module 243C, the second processing unit 245C, and the second storage unit 246C also include a second brightness detection unit 244C.

When the second backlight module 243C is driven with the second brightness value, the second brightness detection unit 244C can directly measure the light L5 from the second backlight module 243C and provide the second brightness measurement value, which is received by the second processing unit 245C The second brightness measurement value is compared with the second brightness standard measurement value. When the two are different, the second brightness value is increased until the light L5 emitted by the second backlight module 242C with the increased second brightness value is measured by the adjusted second brightness measured by the second brightness detection unit 244C The value is the same as the second brightness standard measurement value. At the same time, the second display panel 241C can be corrected by the second color compensation value to make the display light L4 have good quality.

The corrected display device 240C of this embodiment may also provide a brightness difference after correcting the brightness by the second brightness detection unit 244C, and then obtain the third in the statistical correction data based on the brightness difference and the second brightness standard measurement value The color compensation value is used to correct the second display panel 241C. In other words, the correction method of this embodiment can also provide suitable color compensation according to the brightness adjustment amount of the second backlight module, so as to provide a good picture correction effect.

In other words, the calibration method proposed by the present invention can be applied to a calibration display device with a self-luminance correction function and a calibration display device without a self-brightness correction function, and each provides appropriate download data to calibrate the second display panel.

To sum up, the calibration method proposed by the present invention can generate statistical calibration data by uploading data generated by the sampling display device and the image calibration device, and generating download data by statistical calibration data to correct other devices with the same type of display panel The calibration display device can further provide a brightness compensation value to calibrate the backlight module according to the needs of the calibration display device. The sampling display device provided by the present invention can be used with a picture correction device to provide upload data for the remote database to generate statistical correction data, so that the correction display device provided by the present invention can be downloaded from suitable download data obtained from the statistical correction device.

DD1‧‧‧Download information

SCD1‧‧‧Statistical correction data

UD1, UD2‧‧‧ upload information

100‧‧‧Display calibration system

120, 120A, 120B ‧‧‧ picture correction device

130‧‧‧ Remote database

140, 140A, 140B, 140C‧‧‧ display device

141A, 141B, 141C‧‧‧ display panel

142A, 142B, 142C‧‧‧ access unit

Claims (10)

A calibration method for a display device, including: a. selecting at least one sampling display device among a plurality of display devices of the same type of display panel; b. using a picture calibration device to calibrate the sampling display device and generating an upload data; c . Upload the uploaded data to a remote database, and the remote database generates a statistical calibration data based on the uploaded data; d. Select a calibration display device from the multiple display devices of the same type of display panel, the remote data The library provides a download from the statistical correction data to the correction display device for correction. The calibration method as described in item 1 of the patent application scope, wherein the uploaded data and the statistical calibration data include a first color compensation value and an operating time relative to the first color compensation value, and the step d further includes: Calibrate the operation time of the display device and the operation time of the statistical correction data to correct the first color compensation value to a second color compensation value, the download data includes the second color compensation value, and the corrected display device uses the second color Correction of compensation value; wherein the operation time is the cumulative time of operation of the sampling display device or the correction display device. The calibration method as described in item 2 of the patent application scope, wherein the step c further includes: obtaining a plurality of uploaded data from the sampling and display devices at different times or different times; and compensating for the first colors based on the uploaded data The value calculates a calibration curve along the time axis corresponding to the operating time. The step of correcting the second color compensation value further includes: providing the second color compensation value from the calibration curve according to the operating time of the corrected display device. The calibration method as described in item 1 of the patent application scope, wherein the sampling display device includes: a first display panel, a first backlight module and a first brightness detection unit; the step b further includes: b1. use A first brightness value drives the first backlight module; b2. The first brightness detection unit measures a first brightness measurement value of the first backlight module; b3. When the first brightness measurement value is less than When a first standard brightness measurement value is increased, the first brightness value is increased, and step b2 is repeated until the first brightness measurement value is equal to the first standard brightness measurement value, and the change amount of the first brightness value is recorded Is a first brightness compensation value; b3. using the picture correction device to measure a first color measurement value on a test picture displayed on the sampling display device; b4. When the first color measurement value is not equal to a first For a standard color value, change the color of the first display panel, repeat step b3 until the first color measurement value is equal to the first standard color value, and record the color change amount of the first display panel as a first A color compensation value; and b5. recording the first brightness compensation value and the first color compensation value, and the operating time of the sampling display device to the upload data; wherein the operating time is the sampling display device or the calibration display The cumulative time the device is operating. The calibration method as described in item 1 of the patent scope, wherein the calibration display device further includes a second backlight module and a second brightness detection unit; after step d, it also includes: d1. Use a second brightness value Driving the second backlight module; d2. the second brightness detection unit measures a second brightness measurement value from the second backlight module; and d3. compares the second brightness measurement value with a second standard The brightness measurement value obtains a brightness difference, and the second brightness value is increased until the second brightness measurement value is the same as the second standard brightness measurement value; d4. The second standard brightness corresponding to the download data reading A third color compensation value of the difference between the measured value and the brightness; and d5. use the third color compensation value to compensate the color of the corrected display device. A sampling display device corresponding to a picture calibration device is calibrated. The sampling display device includes: a first display panel for displaying a test picture, the picture calibration device detects the test picture, calibrates the first display panel and Generate an upload data; a first access unit, connected to a remote database; and a first processing unit, connected to the first display panel and the first access unit, when the picture correction device calibrates the sampling display device When the picture correction device is connected to the first processing unit, the picture correction device detects the test picture and provides a first color measurement value; when the first color measurement value is not equal to a first standard color value , The first processing unit provides a first color compensation value to correct the first display panel, so that the corrected first color measurement value is equal to the first standard color value; the first processing unit converts the first color The compensation value is stored in the uploaded data, and the uploaded data is uploaded to the remote database via the first access unit. The sampling and display device as described in item 6 of the patent application scope further includes: a first backlight module; a first brightness detection unit; and a first processing unit connected to the first backlight module and the first Brightness detection unit; when the first backlight module is driven with a first brightness value, the first brightness detection unit measures a first brightness measurement value from the first backlight module, when the first brightness When the measurement value is less than a first standard brightness measurement value, the first processing unit increases the first brightness value by a first brightness compensation value until the first brightness measurement value is equal to the first standard brightness measurement value The first processing unit stores the first brightness compensation value in the uploaded data. A calibration display device includes: a second display panel; and a second access unit connected to a remote database, the remote data store has a statistical calibration data; wherein the second access unit is from the remote data The statistical correction data of the library obtains a download data, and corrects the second display panel according to the download data; the remote database collects a plurality of upload data uploaded by the display device of the same display panel as the second display panel, And generate the statistical correction data according to the uploaded data. The calibration display device according to item 8 of the patent application scope further includes: a second storage unit storing the operation time of the calibration display device, the second access unit obtaining the operation time from the second storage unit and uploading To the remote database, the remote database obtains a second color compensation value from the statistical correction data according to the operating time, the download data includes the second color compensation value, and the second display panel uses the second color The compensation value corrects its color. The calibration display device as described in item 8 of the patent application scope further includes: a second backlight module, which is driven by a second brightness value when the second access unit obtains the calibration data; a second brightness detection A measurement unit to measure the light emitted by the second backlight module and provide a second brightness measurement value; a processing unit to receive the second brightness measurement value when the second brightness measurement value and a brightness standard When the measurement values are different, the second brightness measurement value is increased by a brightness difference so that the second brightness measurement value is the same as the brightness standard measurement value, and the processing unit reads the corresponding brightness standard in the download data A third color compensation value that measures the difference between the measured value and the brightness, and uses the third color compensation value to compensate colors for the corrected display device.

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