Detection device and detection method

Abstract

The invention provides a detection device which comprises a bearing jig, an antenna assembly and a frequency spectrum detection piece, the bearing jig comprises a jig body and a debugging piece, the jig body is used for bearing a display screen, the debugging piece is electrically connected to the display screen, the antenna assembly is grounded and connected to the jig body, and the frequency spectrum detection piece is electrically connected to the debugging piece. The frequency spectrum detection piece is electrically connected to the antenna assembly and used for detecting noise signals generated by the display screen, and the frequency spectrum detection piece is electrically connected to the antenna assembly and used for detecting the signal frequency band and the corresponding signal strength of the noise signals detected by the antenna assembly; thus, signal detection is performed on the display screen independently through the detection device, whether the intensity of the noise signal generated by the display screen meets the design standard or not can be detected more accurately, whether the noise signal of the display screen reaches the standard or not can be detected in time, and it is guaranteed that only the display screen with the noise signal reaching the standard can enter the next assembly procedure; therefore, the quality of the electronic equipment is ensured and the production efficiency is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of detection technology, and in particular to a detection device and a detection method. Background Art

[0002] In electronic devices (for example, laptop computers), the display screen of the electronic device is one of the key components of the electronic device, and its performance experience has attracted much attention from users. Therefore, it is necessary to continuously improve the refresh rate and resolution of the display screen to improve the performance experience. As the refresh rate and resolution of the display screen continue to increase, the data transmission rate also increases accordingly, making it easier for the frequency multiplier to fall within the working frequency band of the wireless signal, interfering with the antenna performance. In particular, with the popularization of the 6E frequency band of wireless signals, the wireless signal frequency band becomes wider, and the antenna on the electronic device is more susceptible to interference, resulting in a decrease in the wireless rate and affecting the Internet experience of the end user.

[0003] In the existing research and development process of electronic equipment, noise signal detection is usually performed on the electronic equipment after mass production. The whole machine detection method cannot specifically determine whether the noise signal generated by a certain component of the entire electronic device meets the standard. It can only improve the antenna on the electronic device, for example, the anti-interference ability of the antenna, or disassemble the entire electronic device and redesign the arrangement and layout of each electronic component; however, this whole machine detection method cannot independently detect the display screen that can generate noise signals, so that the display screen with substandard noise signals cannot be discovered in time, affecting the quality of the electronic equipment. At the same time, when the whole machine detection is defective, it is necessary to redesign and improve the antenna or disassemble the device to redesign the arrangement and layout of the electronic components, affecting the production efficiency of the electronic equipment. Summary of the invention

[0004] The present disclosure provides a detection device and a detection method to at least solve the above-mentioned problems in the prior art.

[0005] To achieve the above object, the present disclosure provides the following technical solution: a detection device for detecting noise generated by a display screen of an electronic device, characterized in that it comprises:

[0006] A carrying fixture, comprising a fixture body and a debugging piece, wherein the fixture body is used to carry the display screen, the debugging piece is disposed adjacent to the fixture body and electrically connected to the display screen, and the debugging piece is used to ensure the normal operation of the display screen;

[0007] An antenna assembly, the antenna assembly is grounded and connected to the fixture body, and is used to detect a noise signal generated by the display screen;

[0008] The spectrum detection component is disposed adjacent to the fixture body and electrically connected to the antenna assembly, and the spectrum detection component is used to detect the signal frequency band and the corresponding signal strength of the noise signal detected by the antenna assembly.

[0009] In one possible implementation manner, the electronic device further comprises a display screen housing, and the display screen is mounted in the display screen housing; wherein the fixture body directly adopts the display screen housing that is compatible with the display screen to be tested.

[0010] In one possible implementation manner, the electronic device further comprises a display screen housing, and the display screen is mounted in the display screen housing; wherein the fixture body is formed in the shape of the display screen housing.

[0011] In one possible implementation, the antenna assembly includes a plurality of antenna bodies, the plurality of antenna bodies are arranged at intervals, and each of the antenna bodies is connected to the fixture body and is adjacent to a circuit board on the display screen.

[0012] In one possible implementation, the antenna assembly further includes:

[0013] A plurality of radio frequency connection lines, the number of the radio frequency connection lines is consistent with the number of the antenna bodies, and one end of each of the radio frequency connection lines is connected to a corresponding one of the antenna bodies;

[0014] A control switch, the other end of each of the radio frequency connection lines is connected to the control switch, and the control switch is also electrically connected to the spectrum detection component.

[0015] In one possible implementation manner, the spectrum detection component includes:

[0016] A spectrum detection body, electrically connected to the control switch, and used to detect the signal frequency band and corresponding signal strength of the noise signal detected by each antenna body;

[0017] The control end is electrically connected to the spectrum detection body and is used to store and display each signal frequency band detected by the spectrum detection body and the corresponding signal strength.

[0018] The present disclosure also provides the following technical solution: a detection method, the detection method comprising:

[0019] Install the display screen to be tested on the fixture body, select a suitable fixture body according to the size specifications of the display screen, and install the display screen on the fixture body;

[0020] Installing an antenna assembly to the fixture body, installing the antenna assembly to a position on the fixture body close to a circuit board on the display screen, and electrically connecting the display screen to a debugging component to ensure that the display screen works normally through the debugging component;

[0021] Noise signal detection: electrically connecting the antenna assembly to a spectrum detection component, and obtaining a signal frequency band of the noise signal detected by the antenna assembly and a signal strength of the corresponding signal frequency band through the spectrum detection component.

[0022] In one possible implementation, the step of noise signal detection is:

[0023] Test whether the antenna components are working properly and obtain test data of different signal frequency bands;

[0024] The antenna assembly transmits the detected noise signals of different frequency bands to the spectrum detection component;

[0025] The spectrum detection element detects the intensity of noise signals in different frequency bands;

[0026] The spectrum detection element stores and displays the strength of noise signals in different signal frequency bands, and compares it with corresponding test data to determine whether the display screen is qualified.

[0027] In one possible implementation,

[0028] The fixture body directly adopts the display screen housing adapted to the display screen to be tested; or,

[0029] The jig body is made in the shape of the display screen housing, and the jig body is matched with the display screen to be tested.

[0030] In one possible implementation manner, the frequency band of the noise signal detected by the spectrum detection component includes a 2.4G frequency band, a 5G frequency band, and a 6E frequency band.

[0031] When the above-mentioned detection device is used for detection, the display screen to be detected is first independently installed in the fixture body, and then the debugging component is used to ensure that the display screen is on and works normally. Next, the noise signal generated by the display screen is obtained through the antenna assembly and transmitted to the spectrum detection component. The spectrum detection component detects the noise signals of different frequency bands and the signal strength of the corresponding frequency bands. Finally, the signal strength is analyzed. When the signal strength exceeds the set threshold, the intensity of the noise signal of the display screen is too large and does not meet the design standard. When the signal strength does not exceed the set threshold, the intensity of the noise signal of the display screen is small and meets the design standard. In this way, the detection device is used to perform signal detection on the display screen that has not been assembled into a finished electronic device separately, so as to more accurately detect whether the intensity of the noise signal generated by the display screen meets the design standard, so as to timely detect whether the noise signal of the display screen meets the standard, so as to ensure that only the display screen with the noise signal meeting the standard can enter the next assembly process, which is beneficial to ensure the quality of the electronic equipment and improve production efficiency.

[0032] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0034] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0035] Figure 1 A schematic diagram of the structure of a detection device in an embodiment of the present disclosure is shown;

[0036] Figure 2 A flow chart of a detection method in another embodiment of the present disclosure is shown;

[0037] Figure 3 Shows Figure 2 Flowchart of the steps in noise signal detection.

[0038] Description of the numbers in the figure:

[0039] In the figure: 11, carrier fixture; 111, fixture body; 112, debugging component; 12, antenna assembly; 121, antenna body; 122, RF connecting line; 123, control switch; 13, spectrum detection component; 131, spectrum detection body; 132, control terminal; 20, display screen. DETAILED DESCRIPTION

[0040] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0041] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of this disclosure can be achieved, and this document does not limit this.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] The following describes the embodiments of the present invention in conjunction with the accompanying drawings.

[0044] See also Figure 1 , the present embodiment provides a detection device for detecting whether the noise signal generated by the display screen 20 of the electronic device is qualified. Exemplarily, the electronic device can be a laptop computer. The display screen 20 includes a display screen 20 body and a circuit board. The circuit board is installed at the bottom of the display screen 20 body and is electrically connected to the circuit board; the detection device includes a supporting fixture 11, an antenna assembly 12 and a spectrum detection component 13. The supporting fixture 11 includes a fixture body 111 and a debugging component 112. The fixture body 111 is used to support the display screen 20. The debugging component 112 is adjacent to the fixture body 111 and electrically connected to the display screen 20. The debugging component 112 is used to ensure the normal operation of the display screen 20. The debugging component 112 is an EVB debugging board (evaluation board). The antenna assembly 12 is grounded and connected to the fixture body 111, and is used to detect the noise signal generated by the display screen 20. The spectrum detection component 13 is adjacent to the fixture body 111 and electrically connected to the antenna assembly 12. The spectrum detection component 13 is used to detect the signal frequency band and corresponding signal strength of the noise signal detected by the antenna assembly 12.

[0045] When the above-mentioned detection device is used for detection, the display screen 20 to be detected is first independently installed in the fixture body 111, and then the debugging component 112 is used to ensure that the display screen 20 is lit and works normally. Then, the noise signal generated by the display screen 20 is obtained through the antenna component 12 and transmitted to the spectrum detection component 13. The spectrum detection component 13 detects the noise signals of different frequency bands and the signal strength of the corresponding frequency bands. Finally, the signal strength is analyzed. When the signal strength exceeds the set threshold, the intensity of the noise signal of the display screen 20 is too large and does not meet the design standard. When the signal strength does not exceed the set threshold, the intensity of the noise signal of the display screen 20 is small and meets the design standard. In this way, the detection device is used to perform signal detection on the display screen 20 that has not been assembled into a finished electronic device separately, so as to more accurately detect whether the intensity of the noise signal generated by the display screen 20 meets the design standard, so as to timely detect whether the noise signal of the display screen 20 meets the standard, so as to ensure that only the display screen 20 with the noise signal meeting the standard can enter the next assembly process, which is beneficial to ensure the quality of the electronic equipment and improve production efficiency.

[0046] It has been found through testing that the noise signal of the display screen 20 mainly comes from the circuit board. The antenna of the laptop is usually installed in the hinge between the display screen 20 and the host, and the distance is relatively close. Therefore, when the intensity of the noise signal generated by the circuit board is large, it will cause interference to the antenna.

[0047] See also Figure 1 In some embodiments, the electronic device further includes a display screen 20 housing, the display screen 20 is installed in the display screen 20 housing, and the fixture body 111 directly adopts a display screen 20 housing that is compatible with the display screen 20 to be tested. Specifically, the display screen 20 housing is part A of a laptop computer.

[0048] In this way, by directly using the display screen 20 shell with specifications corresponding to the display screen 20 to be tested as the jig body 111, the fit between the display screen 20 to be tested and the jig body 111 is improved, and it is also possible to detect whether the size of the display screen 20 meets the standard. At the same time, there is no need to produce and process the jig shell separately, which makes the production of the detection device more convenient and quick, and can also simulate the working environment of the display screen 20 to make the detection more accurate.

[0049] It can be understood that the shell of the laptop computer is the main component of the laptop, wherein item A refers to the back cover of the display screen 20, item B refers to the front frame of the display screen 20, item C refers to the upper cover of the host, and item D refers to the lower cover of the host.

[0050] In this embodiment, the display screen 20 that passes the noise signal detection does not need to be removed from the fixture body 111 and directly enters the next assembly process, so as to improve the production efficiency of the electronic equipment.

[0051] In some embodiments, the electronic device also includes a display screen 20 shell, the display screen 20 is installed in the display screen 20 shell, and the fixture body 111 is made in the shape of the display screen 20 shell. The shape and size of the contoured fixture body 111 are exactly the same as the display screen 20 shell. Specifically, the display screen 20 shell is part A of a laptop computer.

[0052] In this embodiment, the jig body 111 made of the shell of the contoured display screen 20 is made of high-strength wear-resistant material, such as PPS material, so as to reduce the wear of the jig body 111, or the skeleton material of the jig body 111 is made of high-strength material, and an elastic layer, such as a rubber layer, is provided at the part where the jig body 111 contacts the display screen 20, so as to reduce the wear of the display screen 20 and the jig body 111 at the same time.

[0053] In some embodiments, the antenna assembly 12 includes a plurality of antenna bodies 121, and the plurality of antenna bodies 121 are arranged at intervals. Specifically, the plurality of antenna bodies 121 are arranged at equal intervals, and each antenna body 121 is connected to the bottom of the fixture body 111 and is adjacent to a circuit board on the display screen 20. In this way, by arranging a plurality of antenna bodies 121, the bottom of the display screen 20 is completely covered, so as to improve the detection accuracy.

[0054] In this embodiment, the antenna body 121 is detachably connected to the bottom of the fixture body 111, so that when detecting display screens 20 of different specifications, the fixture bodies 111 of different specifications can be quickly replaced, thereby improving the application scope of the detection device. The present application does not limit the detachable connection method between the antenna body 121 and the fixture body 111. For example, the detachable connection can be achieved by screws, or by clamps.

[0055] Furthermore, the sizes of A parts of existing laptop computers are mainly 13 inches, 14 inches, 15 inches, 16 inches, 17 inches, etc. Four antennas can take into account the detection of a 17-inch display screen 20. Therefore, the number of antenna bodies 121 is two, three or four. The specific number of antenna bodies 121 is adjusted according to the specifications of the display screen 20, and it only needs to be able to completely cover the bottom area of ​​the display screen 20.

[0056] In some embodiments, the performance of the antenna body 121 is less than or equal to -5dbm, so as to reduce the interference of the noise signal generated by the antenna body 121 itself, thereby facilitating improving the detection accuracy. The isolation of the antenna body 121 is less than or equal to -20db, indicating that the mutual interference between the antenna bodies 121 is low and the isolation is good, so as to further improve the detection accuracy.

[0057] See also Figure 1In some embodiments, the antenna assembly 12 also includes a plurality of RF connection lines 122 and a control switch 123. The number of RF connection lines 122 is consistent with the number of antenna bodies 121, and one end of each RF connection line 122 is connected to a corresponding antenna body 121, and the other end of each RF connection line 122 is connected to the control switch 123, so as to switch to different antenna bodies for detection through the control switch 123, thereby avoiding the need to repeatedly disassemble the RF connection line 122 during the test, resulting in wear of the connection ports of the RF connection line 122 and the antenna body. The control switch 123 is also electrically connected to the spectrum detection device 13.

[0058] Furthermore, the ports of the multiple antenna bodies 121 have the same specifications and are compatible with the plug connectors of each RF connection line 122, so that each RF connection line 122 can be plugged into any antenna body 121, so as to improve the convenience of plugging in the RF connection line 122.

[0059] Furthermore, when the number of antenna bodies 121 and RF connecting lines 122 is two, the control switch 123 adopts a single-pole double-throw switch; when the number of antenna bodies 121 and RF connecting lines 122 is three, the control switch 123 adopts a single-pole three-throw switch; when the number of antenna bodies 121 and RF connecting lines 122 is four, the control switch 123 adopts a single-pole four-throw switch.

[0060] See also Figure 1 In some embodiments, the spectrum detection element 13 includes a spectrum detection body 131 and a control terminal 132. The spectrum detection body 131 is electrically connected to the control switch 123. The spectrum detection body 131 is used to detect the signal frequency band and the corresponding signal strength of the noise signal detected by each antenna body 121. The control terminal 132 is electrically connected to the spectrum detection body 131 and is used to store and display each signal frequency band and the corresponding signal strength detected by the spectrum detection body 131. Exemplarily, the spectrum detection body 131 can be a spectrum analyzer, and the control terminal 132 can be a computer. Accordingly, the computer is provided with a data acquisition system.

[0061] In some embodiments, the detection environment of the detection device is a shielded room environment, so as to reduce external electromagnetic signal interference, thereby further improving the detection accuracy.

[0062] See also Figure 2 This embodiment also provides a detection method, the detection method comprising:

[0063] S1, install the display screen 20 to be tested on the fixture body 111, select a suitable fixture body 111 according to the size specifications of the display screen 20, and install the display screen 20 on the fixture body 111. The installation should be sufficient, and there should be no gap between the edge of the display screen 20 and the fixture body 111 to ensure the accuracy of the test result;

[0064] In S1 , the fixture body 111 directly adopts a display screen 20 shell that matches the display screen 20 to be tested; or, the fixture body 111 is made in the shape of the display screen 20 shell, and the shaped fixture body 111 is matched with the display screen 20 to be tested.

[0065] S2, install the antenna assembly 12 to the fixture body 111, install the antenna assembly 12 to a position on the fixture body 111 close to the circuit board on the display screen 20, and electrically connect the display screen 20 to the debugging component 112 to ensure that the display screen 20 is lit and works normally through the debugging component 112.

[0066] S3, noise signal detection, electrically connecting the antenna assembly 12 to the spectrum detection component 13, and obtaining the signal frequency band of the noise signal detected by the antenna assembly 12 and the signal strength of the corresponding signal frequency band through the spectrum detection component 13.

[0067] See also Figure 3 , the steps of noise signal detection in S3: S31, test whether the antenna component 12 works normally and obtain test data of different signal frequency bands; in S31, test multiple different types of display screens 20 to verify the test environment, and formulate test data of noise signals, wherein the test data for testing the 2.4G frequency band is -108dbm, the test data for testing the 5G frequency band is -105dbm, and the test data for testing the 6E frequency band is -105dbm; S32, the antenna component 12 transmits the detected noise signals of different frequency bands to the spectrum detection component 13; S33, the spectrum detection component 13 detects the strength of noise signals of different frequency bands; in S33, the frequency bands of noise signals detected by the spectrum detection component 13 include 2.4G frequency band, 5G frequency band and 6E frequency band; S34, the spectrum detection component 13 saves and displays the strength of noise signals of different signal frequency bands, and compares them with the corresponding test data to determine whether the display screen 20 is qualified.

[0068] In S34, the signal strength of each signal frequency band stored and displayed by the spectrum detection component 13 is compared with the above test data. For example, in the 2.4G frequency band, when the signal strength of the frequency band detected by the spectrum detection component 13 is greater than -108dbm, it means that the noise signal of the display screen 20 is unqualified; when the signal strength of the frequency band detected by the spectrum detection component 13 is less than or equal to -108dbm, it means that the noise signal of the display screen 20 is qualified. In the 5G frequency band, when the signal strength of the frequency band detected by the spectrum detection component 13 is greater than -108dbm, it means that the noise signal of the display screen 20 is qualified. If the signal strength of the frequency band detected by the spectrum detection device 13 is greater than -105dbm, it means that the noise signal of the display screen 20 is unqualified; when the signal strength of the frequency band detected by the spectrum detection device 13 is less than or equal to -105dbm, it means that the noise signal of the display screen 20 is qualified. In the 6E frequency band, when the signal strength of the frequency band detected by the spectrum detection device 13 is greater than -105dbm, it means that the noise signal of the display screen 20 is unqualified; when the signal strength of the frequency band detected by the spectrum detection device 13 is less than or equal to -105dbm, it means that the noise signal of the display screen 20 is qualified.

[0069] The spectrum detection component 13 includes a spectrum analyzer and a computer. The spectrum analyzer is electrically connected to the control switch 123 and the computer. The spectrum analyzer is used to detect the signal frequency band and the corresponding signal strength of the noise signal detected by each antenna body 121. The computer is used to store and display each signal frequency band and the corresponding signal strength detected by the spectrum detection body 131. During detection, the spectrum needs to be set, for example, RBW / VBW (resolution bandwidth and video bandwidth) and scanning time.

[0070] For the display screen 20 with unqualified noise signals, the noise signals of the display screen 20 can be made qualified through hardware optimization and software optimization. Hardware optimization includes circuit board routing optimization, circuit board position optimization and overall design optimization. Software optimization includes frequency shifting and spread spectrum. Frequency shifting is to adjust the P2P transmission rate so that multiple harmonics avoid the working frequency band of the antenna, thereby avoiding the interference of noise signals. Spread spectrum is to modulate the narrowband signal to a certain depth with a certain modulation frequency to convert it into a broadband spectrum, so that the energy is not concentrated on a certain frequency point but dispersed with multiple frequency points, thereby reducing the interference of noise signals.

[0071] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A detection device for detecting noise generated by a display screen of an electronic device, characterized in that: include: A carrying fixture, comprising a fixture body and a debugging piece, wherein the fixture body is used to carry the display screen, the debugging piece is disposed adjacent to the fixture body and electrically connected to the display screen, and the debugging piece is used to ensure the normal operation of the display screen; An antenna assembly, the antenna assembly is grounded and connected to the fixture body, and is used to detect a noise signal generated by the display screen; The spectrum detection component is disposed adjacent to the fixture body and electrically connected to the antenna assembly, and the spectrum detection component is used to detect the signal frequency band and the corresponding signal strength of the noise signal detected by the antenna assembly.

2. The detection device according to claim 1, characterized in that: The electronic device further comprises a display screen housing, and the display screen is mounted in the display screen housing; wherein the fixture body directly adopts the display screen housing that is compatible with the display screen to be tested.

3. The detection device according to claim 1, characterized in that: The electronic device further comprises a display screen housing, and the display screen is mounted on the display screen housing; wherein the fixture body is formed in the shape of the display screen housing.

4. The detection device according to claim 2 or 3, characterized in that: The antenna assembly includes a plurality of antenna bodies, the plurality of antenna bodies are arranged at intervals, and each of the antenna bodies is connected to the fixture body and is adjacent to a circuit board on the display screen.

5. The detection device according to claim 4, characterized in that: The antenna assembly further comprises: A plurality of radio frequency connection lines, the number of the radio frequency connection lines is consistent with the number of the antenna bodies, and one end of each of the radio frequency connection lines is connected to a corresponding one of the antenna bodies; A control switch, the other end of each of the radio frequency connection lines is connected to the control switch, and the control switch is also electrically connected to the spectrum detection component.

6. The detection device according to claim 5, characterized in that: The spectrum detection component comprises: A spectrum detection body, electrically connected to the control switch, and used to detect the signal frequency band and corresponding signal strength of the noise signal detected by each antenna body; The control end is electrically connected to the spectrum detection body and is used to store and display each signal frequency band detected by the spectrum detection body and the corresponding signal strength.

7. A detection method, characterized in that: The detection method comprises: Install the display screen to be tested on the fixture body, select a suitable fixture body according to the size specifications of the display screen, and install the display screen on the fixture body; Installing an antenna assembly to the fixture body, installing the antenna assembly to a position on the fixture body close to a circuit board on the display screen, and electrically connecting the display screen to a debugging component to ensure that the display screen works normally through the debugging component; Noise signal detection: electrically connecting the antenna assembly to a spectrum detection component, and obtaining a signal frequency band of the noise signal detected by the antenna assembly and a signal strength of the corresponding signal frequency band through the spectrum detection component.

8. The detection method according to claim 7, characterized in that: Steps for noise signal detection: Test whether the antenna components are working properly and obtain test data of different signal frequency bands; The antenna assembly transmits the detected noise signals of different frequency bands to the spectrum detection component; The spectrum detection element detects the intensity of noise signals in different frequency bands; The spectrum detection element stores and displays the strength of noise signals in different signal frequency bands, and compares it with corresponding test data to determine whether the display screen is qualified.

9. The detection method according to claim 7, characterized in that: The fixture body directly adopts the display screen housing adapted to the display screen to be tested; or, The jig body is made in the shape of the display screen housing, and the jig body is matched with the display screen to be tested.

10. The detection method according to claim 8, characterized in that: The frequency bands of the noise signal detected by the spectrum detection element include 2.4G frequency band, 5G frequency band and 6E frequency band.

Images