Detection system and method for displaying photoelectric property of product

Abstract

The invention provides a detection system and method for the photoelectric performance of a display product, and the system comprises a calibration device which is used for obtaining a correction coefficient of the optical performance of the display product under high and low temperature conditions; the on-line testing device is used for testing the optical performance of the display product under the same high and low temperature condition, the calibration device and the on-line testing device share one group of optical fiber probe and optical fiber, and the optical fiber probe is used for capturing an optical signal of a specified display area of the display product; the optical fiber is placed in the environment with the same high-temperature and low-temperature conditions and is used for transmitting the captured optical signals; the summation module is used for outputting and displaying a final parameter value of the photoelectric property of the product, and the final parameter value is the sum of the test value of the online test device and the correction coefficient; the problems that when optical performance detection is carried out on a conventional display product in an environmental test box under a high-temperature or low-temperature condition, glass transmittance changes at different temperatures greatly influence the accuracy of a measurement result, and the optical performance of the display product cannot be accurately measured are solved.

Description

Technical Field

[0001] The present application relates to the technical field of display product detection, and in particular to a detection system and method for the photoelectric performance of a display product. Background Art

[0002] At present, display products are increasingly used in high and low temperature environments. When display products work under high and low temperature conditions, their structures may undergo physical and chemical changes, which may affect the optical display performance of the products. With the rapid development of science and technology, the working environment required for display products is becoming more and more demanding. Especially in the field of airborne display, display devices are required to be able to work normally in a high temperature environment of 70°C. Temperature has a significant impact on the performance and reliability of display devices. When the ambient temperature rises or falls, the reliability of electronic components in display devices will decrease, and their electro-optical characteristics will change, which will affect the display performance. The performance stability of display products in extreme temperature environments is crucial to their reliability in various application scenarios.

[0003] In order to ensure that display devices can still work normally in high or low temperature environments, it is necessary to conduct environmental adaptability tests on display devices and conduct real-time photoelectric performance tests on them. Since optical measurement equipment cannot work in high and low temperature test chambers, existing test methods are usually unable to conduct real-time detection of the optical performance of display products at actual working temperatures, and the current calibration methods for test equipment (mainly brightness meters) in the industry are limited to normal temperature environments, which limits the comprehensive evaluation of display product performance. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present application proposes a detection system and method for displaying the photoelectric performance of a product.

[0005] In a first aspect, the present application proposes a detection system for displaying the photoelectric performance of a product, comprising:

[0006] Calibration device to obtain correction factors for the optical performance of display products under high and low temperature conditions;

[0007] The online testing device is used to test the optical performance of the display product under the same high and low temperature conditions.

[0008] The calibration device and the online test device share a set of optical fiber probes and optical fibers. The optical fiber probes are used to capture the optical signals of the specified display area of ​​the display product. The optical fibers are placed in an environment with the same high and low temperature conditions to transmit the captured optical signals.

[0009] The summing module is used to output the final parameter value of the optoelectronic performance of the display product, where the final parameter value is the sum of the test value of the online testing device and the correction coefficient.

[0010] Optionally, the calibration device further includes: a standard liquid crystal display module, a first spectrometer and a first high and low temperature test chamber;

[0011] A first spectrometer, placed outside the second high and low temperature test chamber, is used to test the optical performance of a standard liquid crystal display module;

[0012] The first high and low temperature test chamber is used to provide high and low temperature conditions for the optical fiber that transmits the optical signal;

[0013] The optical fiber is installed inside the first high and low temperature test box, and the optical fiber probe is installed outside the first high and low temperature test box; the first spectrometer is used to process the optical signal of the standard liquid crystal display module;

[0014] The first spectrometer, the optical fiber, the optical fiber probe and the standard liquid crystal display module are physically connected in sequence, and the optical performance includes: brightness and chromaticity.

[0015] Optionally, the online testing device further includes:

[0016] The second high and low temperature test chamber is used to provide high and low temperature conditions for display products;

[0017] The optical fiber is installed inside the second high and low temperature test box, and the optical fiber probe is installed inside the second high and low temperature test box;

[0018] The loading platform is placed inside the second high and low temperature test chamber and is used to horizontally load the display product;

[0019] The second spectrometer is placed outside the second high and low temperature test chamber and is used to test the optical performance of the display product.

[0020] Optionally, the optical fiber probe is placed at a display area position specified by the display product and is kept perpendicular to the plane of the display area.

[0021] Optionally, the internal set temperature range of the first high and low temperature test chamber / the second high and low temperature test chamber is [-40°C, 85°C].

[0022] In a second aspect, a method for detecting the photoelectric performance of a display product is provided, which is implemented by using the detection system for the photoelectric performance of a display product described in the first aspect, and includes:

[0023] Use a calibration device to obtain correction factors for the optical performance of display products under high and low temperature conditions;

[0024] Using an online testing device to test the optical performance of the display product under the same high and low temperature conditions;

[0025] A summing module is used to output the final parameter of the optoelectronic performance of the display product, and the final parameter value is the sum of the test value of the online testing device and the correction coefficient.

[0026] Optionally, the step of using a calibration device to obtain a correction coefficient of the optical performance of a display product under high and low temperature conditions comprises:

[0027] Install and fix the first spectrometer so that the photometric axis of the first spectrometer is perpendicular to the light emitting surface of the brightness source;

[0028] After inputting a specified signal into the standard liquid crystal display module so that it outputs a specified picture, using a first spectrometer to test the optical performance of the standard liquid crystal display module under room temperature, the optical performance including: brightness and chromaticity;

[0029] After the first high and low temperature test box is set to a designated temperature point and kept warm, a designated picture output by the standard liquid crystal display module is passed through the optical fiber, and the first spectrometer tests the brightness and chromaticity of the designated picture to obtain the brightness and chromaticity indication errors of the standard liquid crystal display module at the designated temperature point caused by the optical fiber;

[0030] The indication error of brightness and chromaticity caused by optical fiber propagation at other temperature points is completed. This indication error is the correction coefficient.

[0031] Optionally, the indication error is:

[0032]

[0033] Wherein, △L is the indication error of the brightness of the optical fiber at a specified temperature point, △x and △y are the indication errors of the chromaticity of the optical fiber at a specified temperature point; L ′ The first spectrometer tests the brightness of the standard LCD module at the specified temperature point, x ′ ,y ′ is the chromaticity of the standard liquid crystal display module tested by the first spectrometer at a specified temperature point; L is the brightness of the standard liquid crystal display module tested by the first spectrometer at room temperature; x and y are the chromaticity of the standard liquid crystal display module tested by the first spectrometer at room temperature.

[0034] Optionally, the step of using an online testing device to test the optical performance of the display product under the same high and low temperature conditions includes:

[0035] physically connecting the second spectrometer, the optical fiber, and the optical fiber probe;

[0036] Place the display product flat on the stage inside the second high and low temperature test chamber and ensure that it works normally;

[0037] Place the optical fiber probe in the display area of ​​the display product in the second high and low temperature test chamber and keep it perpendicular to the display product;

[0038] Start the second high and low temperature test box and set it to the specified temperature point, and use the second spectrometer outside the box to capture the optical signal of the display product transmitted by the optical fiber in the box to obtain the optical signal information of the display product in the box under the specified temperature and time conditions;

[0039] Repeat the above contents at different temperatures to obtain the optical properties of the display product at different temperatures;

[0040] The second spectrometer processes all captured light signals under specified temperature conditions and time and outputs the optical performance of the displayed product.

[0041] The beneficial effects brought about by the technical solutions provided by some embodiments of the present application include at least:

[0042] The present application provides a detection system and method for the optoelectronic performance of a display product. The optical signal of a specified detection position of a display product in a box is directly captured by replacing the brightness meter lens with an optical fiber probe, and is transmitted to a spectrometer outside the box via a customized high and low temperature resistant optical fiber. The system and method solve the problem that when conventional display products are subjected to optical performance detection under high or low temperature conditions in an environmental test box, changes in glass transmittance at different temperatures have a significant impact on the accuracy of the measurement results, resulting in the brightness meter being unable to accurately measure the optical performance of the display product. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A layout diagram of a calibration device shown in an embodiment of the present application for performing a normal temperature test;

[0044] Figure 2 A layout diagram of a calibration device shown in an embodiment of the present application for high and low temperature environment testing;

[0045] Figure 3 This is a schematic diagram of a high and low temperature online optical testing device shown in an embodiment of the present application;

[0046] Figure 4 This is a flow chart of the high and low temperature online optical testing method shown in the embodiment of the present application.

[0047] Among them, 1 is the first spectrometer; 2 is the optical axis; 3 is the standard liquid crystal display module; 4 is the first high and low temperature test chamber; 5 is the rubber plug A; 6 is the optical fiber; 7 is the rubber plug B; 8 is the optical fiber probe; 9 is the lens; 10 is the display product; 11 is the stage; 12 is the second high and low temperature test chamber; 13 is the second spectrometer. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0049] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of methods and devices consistent with some aspects of the present application as detailed in the attached claims.

[0050] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0051] Embodiment 1

[0052] The present application provides a detection system for displaying the photoelectric performance of a product, comprising:

[0053] 1. Calibration device, see Figure 1 , Figure 2 , used to obtain correction factors for the optical performance of display products under high and low temperature conditions;

[0054] In the specific implementation process, it includes: a standard liquid crystal display module 3, a first spectrometer 1 and a first high and low temperature test box 4;

[0055] A first high and low temperature test chamber 4 is used to provide high and low temperature conditions for the optical fiber 6 that transmits the optical signal;

[0056] The first spectrometer 1 is placed outside the second high and low temperature test chamber and is used to test the optical performance of the standard liquid crystal display module;

[0057] The optical fiber is installed inside the first high and low temperature test box 4, and the optical fiber probe 8 is installed outside the first high and low temperature test box 4; the first spectrometer 1 is used to process the optical signal of the standard liquid crystal display module 3;

[0058] The first spectrometer 1 , the optical fiber 6 , the optical fiber probe 8 and the standard liquid crystal display module 3 are physically connected in sequence, and the optical performance includes: brightness and chromaticity.

[0059] 2. Online testing device, used to test the optical performance of the display product under the same high and low temperature conditions, specifically to perform online optical performance testing on the display product under high or low temperature environment in a high and low temperature test chamber; Figure 3 As shown, it also includes:

[0060] The second high and low temperature test chamber 12 is used to provide high and low temperature conditions for the display product;

[0061] The optical fiber is installed inside the second high and low temperature test box, and the optical fiber probe is installed inside the second high and low temperature test box;

[0062] The loading platform 11 is placed inside the second high and low temperature test chamber 12 and is used to horizontally carry the display product;

[0063] The second spectrometer 13 is placed outside the second high and low temperature test box 12 and is used to test the optical performance of the display product.

[0064] The optical fiber probe 8 is used to capture the optical signal of the designated display area of ​​the display product;

[0065] During the specific implementation, the optical fiber probe 8 is placed at a position of a display area specified by the display product 10 , and is kept perpendicular to the plane of the display area specified by the display product 10 .

[0066] Specifically, the temperature range inside the first / second high and low temperature test box can be set to be greater than or equal to -40°C and less than or equal to 85°C.

[0067] It can be understood that the optical fiber 6 is used to transmit the captured optical signal to the test instrument in the online test device; the calibration device and the online test device share a set of optical fibers 6 and optical fiber probe 8; the test instrument in this embodiment is mainly a spectrometer.

[0068] The summing module is used to output the final parameter value of the optoelectronic performance of the display product, where the final parameter value is the sum of the test value of the online testing device and the correction coefficient.

[0069] In the prior art, the high and low temperature online optical performance detection system includes a computer, a display product, a customized high and low temperature test chamber, a surface imaging brightness meter, a viewing angle meter, a driving circuit board, a signal generator, a fixture and a lifting platform. The surface imaging brightness meter can be used to measure the brightness of the liquid crystal display. In addition, the surface imaging brightness meter can also measure the polarization state of light and give polarization parameters such as ellipticity angle (ε), azimuth angle (α), polarization degree (ρ) and the Stokes vector of the light.

[0070] The angle meter modifies the lens module by replacing the original lens with a high and low temperature resistant lens. The lens module of the angle meter can be inserted into a high and low temperature test chamber to test the viewing angle of the LCD display. During the test, nitrogen needs to be flushed into the lens module from the outside to expel the air therein to prevent water vapor in the air from entering the lens module and causing damage to the instrument during the test.

[0071] The signal generator is the voltage signal input source, which is connected to the circuit inside the display to light it up. The circuit board is the signal input source, and the signal source can be switched by keystroke, such as black field, white field and various other color pictures. The fixture is used to fix the LCD display, and the lifting platform adjusts the relative position of the test instrument and the tested device.

[0072] The high and low temperature test chamber is used to simulate a high temperature environment. By controlling the temperature of the high and low temperature test chamber, the display performance of the test product at different temperatures is tested. This detection system has high requirements for the placement of the sample to be tested, and the brightness meter is parallel to the normal direction of the display product. In addition to the air medium, the brightness meter also captures the light signal of the display product in the box through the glass medium on the side wall of the test chamber, which has a greater impact on the accuracy of the measurement results.

[0073] The present application provides a detection system for the optoelectronic properties of a display product. A high temperature or low temperature environment is set in a high and low temperature test chamber for online optical testing. The system can accurately and quickly detect the optical properties of the display product online without placing the detection equipment in the test chamber or without the optical information passing through the observation window medium of the high and low temperature test chamber. This solves the problem in the existing display detection technology that the detection equipment cannot perform the detection task of the display product in a test chamber in a high temperature or low temperature environment.

[0074] Embodiment 2

[0075] The present application provides a method for detecting the optoelectronic properties of a display product, which is implemented using the detection system for the optoelectronic properties of a display product described in Example 1, including a calibration method for brightness and chromaticity testing at high and low temperatures and an online optical performance detection method at high and low temperatures.

[0076] 1. A method for detecting the photoelectric performance of a display product, implemented by the system described in Example 1, such as Figure 4 As shown, the steps include:

[0077] Step S1.1: using a calibration device to obtain correction coefficients for the optical performance of display products under high and low temperature conditions;

[0078] Step S1.2: using an online testing device to test the optical performance of the display product under the same high and low temperature conditions;

[0079] Step S1.3: using a summing module to output a final parameter of the optoelectronic performance of the display product, wherein the final parameter value is the sum of the test value of the online testing device and the correction coefficient.

[0080] 2. The calibration method for brightness and chromaticity testing at high and low temperatures includes the following steps:

[0081] Step S2.1: Place the standard brightness source on a stable table, first install the first spectrometer on the clamping device, make the photometric axis of the first spectrometer perpendicular to the light-emitting surface of the brightness source, adjust the eyepiece and objective lens of the first spectrometer, aim at the center of the light-emitting surface of the brightness source, make the aperture diaphragm in the first spectrometer clearly visible, the image of the brightness source light-emitting surface is clear, and ensure that the aperture diaphragm covers an area smaller than 2 / 3 of the light-emitting port area of ​​the brightness source.

[0082] Step S2.2: After inputting a designated signal into the standard liquid crystal display module so that it outputs a designated picture, the brightness and chromaticity values ​​thereof are tested using a first spectrometer, where the brightness value is recorded as L and the chromaticity value is recorded as x, y.

[0083] Step S2.3: grooves are made on the left and right walls of the high and low temperature test chamber and sealed with rubber plugs. A hole is made in the center of the rubber plug to ensure that the optical fiber part connected to the first spectrometer can pass through; the first spectrometer is installed as follows: Figure 2 After the layout is completed, the high and low temperature test chamber is set to the specified temperature point K and the insulation action is performed as required. The brightness value of the specified sample to be tested is recorded as L', and the chromaticity value is recorded as x', y'. At this time, the brightness and chromaticity indication errors of the first spectrometer at the specified temperature point K are as follows:

[0084]

[0085] Wherein, △L is the indication error of brightness of the first spectrometer at the specified temperature point K, and △x and △t are the indication errors of chromaticity of the first spectrometer at the specified temperature point K.

[0086] Step S2.4: Repeat steps S2.1 to S2.3 to complete the indication errors of brightness and chromaticity of the first spectrometer at other temperature points.

[0087] 3. An online optical performance detection method at high and low temperatures, comprising the following steps:

[0088] Step S3.1: physically connecting the second spectrometer, the optical fiber and the optical fiber probe;

[0089] Step S3.2: Place the display sample to be tested flat in the high and low temperature test chamber and ensure that the display sample to be tested is working normally;

[0090] Step S3.3: insert the optical fiber probe into the high and low temperature test chamber through the opening on the side wall thereof and place the optical fiber probe in the designated display area of ​​the display product, and keep it perpendicular to the display product;

[0091] Step S3.4: Start the high and low temperature test box and set it to a specified temperature point, operate the second spectrometer outside the box to capture the optical signal of the display product in the box, and transmit it to the second spectrometer outside the box through the optical fiber to obtain the optical signal information of the display product in the box under the specified temperature and time conditions;

[0092] Step S3.5: Repeat the above steps at different temperatures to obtain optical performance data of the display product at different temperatures;

[0093] The second spectrometer processes all captured light signals under specified temperature conditions and time and outputs them in the form of an XLS spreadsheet. The output data includes optical indicators such as brightness, contrast, chromaticity, and color gamut coverage.

[0094] The above-mentioned embodiment method of the present application has the following advantages: the conventional display product is placed in an environmental test box under high or low temperature conditions to test the optical performance. The brightness meter must be placed outside the box and the light signal inside the box must be captured through air and glass media. The change in glass transmittance at different temperatures has a greater impact on the accuracy of the measurement results. The optical fiber probe of this technical example replaces the brightness meter lens as a detection method to directly capture the specified detection position of the display product inside the box, and transmits it to the spectrometer outside the box through a customized high and low temperature resistant optical fiber. Because it is implemented by the detection system in Example 1, it has the same technical features as Example 1 and achieves the same technical effects.

[0095] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-mentioned embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

[0096] The applicant of this application has made a detailed explanation and description of the implementation examples of this application in conjunction with the drawings in the specification. However, those skilled in the art should understand that the above implementation examples are only preferred implementation schemes of this application, and the detailed description is only to help readers better understand the spirit of this application, and it is not a limitation on the scope of protection of this application. On the contrary, any improvements or modifications based on the inventive spirit of this application should fall within the scope of protection of this application.

Claims

1. A detection system for displaying the photoelectric performance of a product, characterized in that: include: Calibration device to obtain correction factors for the optical performance of display products under high and low temperature conditions; An online testing device for testing the optical performance of the display product under the same high and low temperature conditions; The calibration device and the online test device share a set of optical fiber probes and optical fibers. The optical fiber probes are used to capture the optical signals of the specified display area of ​​the display product. The optical fibers are placed in an environment with the same high and low temperature conditions to transmit the captured optical signals. The summing module is used to output the final parameter value of the optoelectronic performance of the display product, where the final parameter value is the sum of the test value of the online testing device and the correction coefficient.

2. The system for detecting the photoelectric performance of display products according to claim 1, characterized in that: The calibration device also includes: a standard liquid crystal display module, a first spectrometer and a first high and low temperature test box; The first high and low temperature test chamber is used to provide high and low temperature conditions for the optical fiber that transmits the optical signal; A first spectrometer, placed outside the second high and low temperature test chamber, is used to test the optical performance of a standard liquid crystal display module; The optical fiber is installed inside the first high and low temperature test box, and the optical fiber probe is installed outside the first high and low temperature test box; the first spectrometer is used to process the optical signal of the standard liquid crystal display module; The first spectrometer, the optical fiber, the optical fiber probe and the standard liquid crystal display module are physically connected in sequence, and the optical performance includes: brightness and chromaticity.

3. The system for detecting the photoelectric performance of display products according to claim 1, characterized in that: The online testing device further comprises: The second high and low temperature test chamber is used to provide high and low temperature conditions for display products; The optical fiber is installed inside the second high and low temperature test box, and the optical fiber probe is installed inside the second high and low temperature test box; The loading platform is placed inside the second high and low temperature test chamber and is used to horizontally load the display product; The second spectrometer is placed outside the second high and low temperature test chamber and is used to test the optical performance of the display product.

4. The system for detecting the photoelectric performance of display products according to claim 3, characterized in that: The optical fiber probe is placed at a display area position specified by the display product and is kept perpendicular to the display area plane.

5. The detection system for display product photoelectric performance according to claim 2 or 3, characterized in that: The internal setting temperature range of the first high and low temperature test box / the second high and low temperature test box is [-40°C, 85°C].

6. A method for detecting the photoelectric performance of a display product, implemented by using the photoelectric performance detection system of any one of claims 1 to 5, characterized in that: include: Use a calibration device to obtain correction factors for the optical performance of display products under high and low temperature conditions; Using an online testing device to test the optical performance of the display product under the same high and low temperature conditions; A summing module is used to output the final parameter of the optoelectronic performance of the display product, and the final parameter value is the sum of the test value of the online testing device and the correction coefficient.

7. The method for detecting the photoelectric performance of a display product according to claim 6, characterized in that: The steps of using a calibration device to obtain a correction coefficient for the optical performance of a display product under high and low temperature conditions include: Install and fix the first spectrometer so that the photometric axis of the first spectrometer is perpendicular to the light emitting surface of the brightness source; After inputting a specified signal into the standard liquid crystal display module so that it outputs a specified picture, using a first spectrometer to test the optical performance of the standard liquid crystal display module under room temperature, the optical performance including: brightness and chromaticity; After the first high and low temperature test box is set to a designated temperature point and kept warm, a designated picture output by the standard liquid crystal display module is passed through the optical fiber, and the first spectrometer tests the brightness and chromaticity of the designated picture to obtain the brightness and chromaticity indication errors of the standard liquid crystal display module at the designated temperature point caused by the optical fiber; The indication error of brightness and chromaticity caused by optical fiber propagation at other temperature points is completed. This indication error is the correction coefficient.

8. The method for detecting the photoelectric performance of a display product according to claim 7, characterized in that: The indication error is: Wherein, △L is the indication error of the brightness of the optical fiber at a specified temperature point, △x and △y are the indication errors of the chromaticity of the optical fiber at a specified temperature point; L ′ The first spectrometer tests the brightness of the standard LCD module at the specified temperature point, x ′ ,y ′ is the chromaticity of the standard liquid crystal display module tested by the first spectrometer at a specified temperature point; L is the brightness of the standard liquid crystal display module tested by the first spectrometer at room temperature; x and y are the chromaticity of the standard liquid crystal display module tested by the first spectrometer at room temperature.

9. The method for detecting the photoelectric performance of a display product according to claim 8, characterized in that: The step of using an online testing device to test the optical performance of the display product under the same high and low temperature conditions comprises: physically connecting the second spectrometer, the optical fiber, and the optical fiber probe; Place the display product flat on the stage inside the second high and low temperature test chamber and ensure that it works normally; Place the optical fiber probe in the display area of ​​the display product in the second high and low temperature test chamber and keep it perpendicular to the display product; Start the second high and low temperature test box and set it to the specified temperature point, and use the second spectrometer outside the box to capture the optical signal of the display product transmitted by the optical fiber in the box to obtain the optical signal information of the display product in the box under the specified temperature and time conditions; Repeat the above contents at different temperatures to obtain the optical properties of the display product at different temperatures; The second spectrometer processes all captured light signals under specified temperature conditions and time and outputs the optical performance of the displayed product.

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