Temperature detection system of display device, backlight lamp panel and display device

Abstract

The utility model provides a temperature detection system of a display device, a backlight lamp panel and the display device, the temperature detection system comprises a plurality of temperature detection units arranged in an array in the backlight lamp panel of the display device, and each temperature detection unit is used for detecting and outputting temperature information in a respective area; the data processing unit is used for sending temperature abnormal information to the first equipment when the temperature information is greater than or equal to a first threshold value; according to the utility model, the temperature detection unit is used for detecting the temperature in each area, the data processing unit is used for carrying out abnormal judgment on the detected temperature, and if the temperature is greater than or equal to the first threshold value, the temperature abnormal information is sent to the outside, so that the temperature detection of the display device is realized.

Description

Technical Field

[0001] The utility model relates to the field of temperature detection, in particular to a temperature detection system, a backlight board and a display device of a display device. Background Art

[0002] When an abnormality such as a short circuit occurs in a display device, it is easy to cause the temperature of the product to rise rapidly. If the abnormal rise in temperature cannot be detected in time, it will cause the subsequent fire or even explosion of the display device, thus damaging the safety of human life and property.

[0003] However, current display devices do not have temperature testing and alarming functions. If a short circuit causes high temperature and fire, etc., it will not be able to be discovered and processed in time.

[0004] Therefore, providing a system that can detect and give early warning of the temperature of a display device has become an urgent technical problem to be solved in the industry. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a temperature detection system, a backlight board and a display device of a display device, which solve the temperature detection of the display device.

[0006] To solve the above technical problem, an embodiment of the utility model provides a temperature detection system of a display device, including:

[0007] A plurality of temperature detection units arranged in an array in the backlight board of the display device, each temperature detection unit is used to detect the temperature information in its respective area and output it;

[0008] A data processing unit, which is used to send temperature abnormality information to a first device when the temperature information is greater than or equal to a first threshold.

[0009] Optionally, it further includes a plurality of driving chips arranged in an array, and each driving chip includes the temperature detection unit.

[0010] Optionally, the temperature detection unit includes a temperature change sub-unit and a detection sub-unit; the temperature change sub-unit is used to output a corresponding temperature change voltage according to the change of temperature; the detection sub-unit is used to receive and detect the temperature change voltage and output the temperature information according to the detection result.

[0011] Optionally, the temperature change sub-unit includes a first triode, a second triode and a current source; the negative pole of the current source is connected to the internal power supply voltage of the driving chip, the positive pole of the current source is connected to the collector of the first triode, and serves as the output end of the temperature change sub-unit; the first end of the base of the first triode, the temperature change sub-unit is connected to its own collector, and the emitter of the first triode is connected to the collector of the second triode; the base of the second triode is connected to its own collector, and the emitter of the second triode is connected to the ground terminal.

[0012] Optionally, the temperature change sub-unit includes a thermistor and a current source; the negative pole of the current source is connected to the internal power supply voltage of the driving chip, the positive pole of the current source is connected to the first end of the thermistor; the second end of the thermistor is connected to the ground terminal.

[0013] Optionally, the detection sub-unit includes at least any one of a comparator and an analog-to-digital converter.

[0014] Optionally, the first device includes any one or more of a mobile phone, a home security system and a fire alarm system.

[0015] Optionally, the data processing unit includes an inspection sub-unit, a mobilization sub-unit and a verification sub-unit:

[0016] The inspection sub-unit is used to inspect the temperature information and, when the temperature information is greater than or equal to a first threshold, output a first mobilization message to the mobilization sub-unit;

[0017] The mobilization sub-unit is used to mobilize an intelligent device to verify the location where the temperature detection unit is located according to the first mobilization message;

[0018] The verification sub-unit is used to verify the verification information fed back by the intelligent device and, when the verification information is abnormal information, send the temperature abnormal information to the first device.

[0019] Optionally, the verification sub-unit is further used to output a second mobilization message to the mobilization sub-unit when the verification information is non-abnormal information;

[0020] The mobilization sub-unit is further used to mobilize the intelligent device to continuously monitor the location where the temperature detection unit is located according to the second mobilization message.

[0021] Optionally, the intelligent device includes at least a camera.

[0022] Optionally, the camera is used to acquire image information of the location where the temperature detection unit with abnormal temperature is located, process the image information, and output the verification information.

[0023] Optionally, the data processing unit includes at least any one of BCON, MCU, single-chip microcomputer, TCON, SOC, and Scaler.

[0024] Correspondingly, an embodiment of the present invention further provides a backlight panel, including several temperature detection units of the temperature detection system of the display device provided by the embodiment of the present invention and LED lamp beads.

[0025] Correspondingly, an embodiment of the present invention further provides a display device, including the backlight panel provided by the embodiment of the present invention and a liquid crystal display screen.

[0026] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0027] In the temperature detection system of the display device of the technical solution of the present invention, the temperature in each area is detected by the temperature detection unit, and the detected temperature is judged for abnormality. If the temperature is greater than or equal to the first threshold, a temperature abnormality information is sent out. In summary, the technical solution of the present invention can realize the temperature detection of the display device.

[0028] Furthermore, the temperature detection unit includes a driving chip. Since the driving chip is a commonly used electronic device in existing display devices. Therefore, the technical solution of the present invention reduces the cost of temperature detection of the display device.

[0029] Furthermore, the data processing unit generates temperature abnormality distribution data through the temperature information output by each driving chip. Also, because the driving chips are evenly distributed on the entire backlight panel of the display device, the temperature abnormality distribution data produced by the data processing unit can perform a large-area temperature analysis on the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the structure of the temperature detection system of the display device provided by the technical solution of the present invention Figure 1 ;

[0031] Figure 2 is the module structure diagram of the temperature detection unit provided by the embodiment of the present invention;

[0032] Figure 3 is the circuit structure diagram of the temperature detection unit provided by the embodiment of the present invention;

[0033] Figure 4 is the structure of the temperature detection system of the display device provided by the technical solution of the present invention Figure 2 .

[0034] Reference numerals:

[0035] 1 - Display device;

[0036] 10 - Backlight board;

[0037] 11 - Temperature detection unit;

[0038] 20 - Data processing unit;

[0039] 21 - Inspection sub - unit;

[0040] 22 - Mobilization sub - unit;

[0041] 23 - Verification sub - unit;

[0042] 30 - First device;

[0043] 40 - Intelligent device;

[0044] I1 - Current source;

[0045] Q1 - First triode;

[0046] Q2 - Second triode;

[0047] A1 - Comparator;

[0048] OT - Temperature information;

[0049] Vref1 - First reference voltage;

[0050] Vref2 - Second reference voltage. Detailed implementation mode

[0051] As described in the background art, the display devices of the prior art do not have temperature testing and alarm functions.

[0052] Figure 1 The structure of the temperature detection system of the display device 1 provided by the technical solution of the present invention Figure 1 .

[0053] Please refer to Figure 1 . Therefore, in view of the problems existing in the prior art, the embodiment of the present invention provides a temperature detection system for a display device 1, including:

[0054] A plurality of temperature detection units 11 arranged in an array in the backlight board 10 of the display device 1, and each temperature detection unit 11 is used to detect the temperature information OT in its respective area and output it;

[0055] A data processing unit 20, configured to send temperature anomaly information to the first device 30 when the temperature information OT is greater than or equal to a first threshold.

[0056] It should be noted that the display device 1 involved in the present utility model includes, but is not limited to, a television, a laptop computer, a computer display screen, etc.

[0057] It should be noted that Figure 1 Although several temperature detection units 11 and the data processing unit 20 are in the same plane, in the actual display device 1, several temperature detection units 11 and the data processing unit 20 are respectively in different planes of the same device.

[0058] The above technical solution of the present utility model can realize comprehensive temperature detection of the display device 1. The specific principle is as follows:

[0059] Since several of the temperature detection units 11 are arranged in an array in the backlight panel 10 of the display device 1, that is, the temperature detection ranges of all the temperature detection units 11 can cover all areas of the display device 1, therefore, the data processing unit 20 can perform temperature detection on all areas of the display device 1 according to the temperature information OT output by each temperature detection unit 11.

[0060] The following will detail the temperature detection system of the display device 1:

[0061] As a specific implementation manner, the temperature detection system further includes several driving chips arranged in an array, and each driving chip includes the temperature detection unit 11. Since the driving chip is a commonly used electronic device in the existing display device 1, temperature detection is performed through the existing electronic devices of the display device 1, thereby reducing the cost of temperature detection of the display device 1.

[0062] Figure 2 It is the module structure diagram of the temperature detection unit provided by the embodiment of the present utility model.

[0063] Please refer to Figure 2 , as a specific implementation manner, the temperature detection unit includes a temperature change sub-unit 111 and a detection sub-unit 112; the temperature change sub-unit 111 is used to output a corresponding temperature change voltage according to the change in temperature; the detection sub-unit 112 is used to receive and detect the temperature change voltage and output the temperature information OT according to the detection result.

[0064] Figure 3 It is the circuit structure diagram of the temperature detection unit provided by the embodiment of the present utility model.

[0065] Please refer to Figure 3 , as a specific implementation manner, the temperature change sub-unit 111 specifically includes: a current source I1, a first triode Q1, a second triode Q2, and the detection sub-unit 112 includes a comparator A1;

[0066] The negative electrode of the current source I1 is connected to the power supply voltage inside the chip. The positive electrode of the current source I1 is respectively connected to the collector of the first triode Q1 and the inverting input terminal of the comparator A1. The base of the first triode Q1 is connected to its own collector. The emitter of the first triode Q1 is connected to the collector of the second triode Q2. The base of the second triode Q2 is connected to its own collector. The emitter of the second triode Q2 is connected to the ground terminal. The non-inverting input terminal of the comparator A1 is connected to the first reference voltage Vref1, and the first reference voltage Vref1 is used to represent the voltage value corresponding to the temperature of the driving chip exceeding the first threshold, and the first threshold corresponds to the temperature critical value of the driving chip.

[0067] The working principle of the temperature detection unit 11 is as follows: The inverting input terminal of the comparator A1 is connected to the sum of the conduction voltages of the first triode Q1 and the second triode Q2, that is, the first voltage. Utilizing the principle that the conduction voltage of the triode decreases as the circuit temperature increases, the first reference voltage Vref1 is set to be lower than the first voltage corresponding to the normal circuit temperature. When the first voltage is less than the first reference voltage Vref1, the comparator A1 outputs a high level, indicating that the temperature of the driving chip has exceeded the critical value. At this time, the non-inverting input terminal of the comparator A1 is switched to access the second reference voltage Vref2, and the second reference voltage Vref2 is used to represent the voltage corresponding to the temperature dropping to the normal value. When the subsequent temperature gradually drops until the first voltage is greater than the second reference voltage Vref2, the comparator A1 outputs a low level, indicating that the temperature of the driving chip has returned to normal. At this time, the non-inverting input terminal of the comparator A1 is switched back to the first reference voltage Vref1.

[0068] In order to prevent the output level of the comparator A1 from fluctuating with the temperature of the driving chip fluctuating at the critical value, the first reference voltage Vref1 is set to be less than the second reference voltage Vref2. For example, when the first voltage corresponding to the normal circuit temperature is 8 mV, the first reference voltage Vref1 is set to 4 mV, and the second reference voltage Vref2 is set to 6 mV. Of course, the above voltage settings are just examples. The specific voltage values of the first reference voltage Vref1 and the second reference voltage Vref2 in a single driving chip can be set according to requirements and are not limited here. At the same time, the first reference voltage Vref1 and the second reference voltage Vref2 in the driving chips in different regions can also be set to different voltage values, which can be specifically set according to the specific region and are not limited here.

[0069] In another embodiment, the specific circuit structure of the temperature-varying subunit 111 can also be replaced with other circuit structures whose conduction voltage varies with temperature, such as a thermistor or a single triode, etc., which is not limited herein. The detection subunit 112 can also be replaced with an analog-to-digital converter, which is not limited herein.

[0070] As a specific embodiment, the data processing unit 20 is specifically a data control board inside the display device 1, such as BCON, MCU, single-chip microcomputer, TCON, SOC, Scaler, etc. The specific structure of the data processing unit 20 can be selected according to requirements, which is not limited herein.

[0071] The data processing unit 20 is further configured to generate temperature anomaly distribution data according to the temperature information OT output by each of the driving chips. Specifically: each of the driving chips outputs the output signal of the comparator A1 through DOS data, that is, the temperature information OT is specifically the output signal of the comparator A1 inside the driving chip. Of course, the data processing unit 20 can also send a read instruction to each driving chip through DIS data to read the temperature information OT stored inside the driving chip. Therefore, the specific manner for the data processing unit 20 to obtain the temperature information OT can be selected according to requirements, which is not limited herein.

[0072] The data processing unit 20 receives the temperature information OT output by each of the driving chips. If the temperature information OT is at a high level, it indicates that the temperature of the corresponding driving chip is abnormal. If the temperature information OT is at a low level, it indicates that the temperature of the corresponding driving chip is normal. The data processing unit 20 generates a temperature anomaly distribution data according to whether each driving chip has a temperature anomaly. The temperature anomaly distribution data is used to characterize the specific distribution of the temperature anomaly area in the display device 1.

[0073] Figure 4 This is the structure of the temperature detection system of the display device 1 provided by the technical solution of the present invention Figure 2 。

[0074] Please refer to Figure 4 , as a specific embodiment, the data processing unit 20 includes an inspection subunit 21, a mobilization subunit 22, and a verification subunit 23:

[0075] The detection subunit specifically includes a data control chip on the data control board, and the inspection subunit 21 is used to determine the module that may have temperature abnormality inside the display device 1 according to the generated temperature abnormality distribution data or directly through the temperature information OT. Therefore, when there may be a module with temperature abnormality, the inspection subunit 21 sends the temperature abnormality distribution data to the main board of the display device 1 through DIP data, so that the main board inquires about the module that may have temperature abnormality, and verifies the temperature abnormality by whether the module can respond. The inspection subunit 21 can also be used to upload the temperature abnormality distribution data and the module information that may have temperature abnormality to the mobilization subunit 22, wherein the first mobilization information specifically includes the temperature abnormality distribution data and the module information that may have temperature abnormality.

[0076] The mobilization subunit 22 specifically includes a cloud ecosystem. The mobilization subunit 22, based on the received first mobilization information, calls the surrounding smart devices 40 connected to the cloud ecosystem to verify the temperature anomaly in the area with abnormal temperature and output verification information. The smart device 40 includes at least a camera, which obtains image information of the area with abnormal temperature through the camera, processes the image information, and outputs the verification information. Of course, the smart device 40 can also be other devices with temperature detection functions, such as infrared cameras, etc., which are not limited here.

[0077] The verification subunit 23 may also include a data control chip on a data control board, and the verification subunit 23 is used to verify the verification information fed back by the smart device 40. If the verification information is confirmed to be abnormal, the temperature abnormality information is sent to the first device 30. If the verification information is confirmed to be non-abnormal, the second mobilization information is output to the mobilization subunit 22, so that the smart device 40 continues to monitor the area that was previously falsely reported to have a temperature abnormality.

[0078] The first device 30 includes at least one or more of a mobile phone, a home security system and a fire alarm system.

[0079] In summary, the temperature detection system of the display device provided in the embodiment of the present invention performs temperature detection through the temperature detection unit disposed in the backlight panel of the display device, so as to realize comprehensive temperature detection of the display device.

[0080] Furthermore, the temperature detection unit is arranged inside the driving chip of the backlight panel to reduce the cost of temperature detection of the display device.

[0081] Further, the data processing unit synthesizes the temperature information output by the temperature detection unit into temperature anomaly distribution data to obtain the specific distribution of the temperature anomaly area, so as to analyze the specific module with temperature anomaly in the display device.

[0082] Another embodiment of the present invention provides a backlight panel, including several temperature detection units of the temperature detection system of the display device provided by the embodiment of the present invention and LED lamp beads.

[0083] Yet another embodiment of the present invention provides a display device, including the backlight panel provided by the embodiment of the present invention and a liquid crystal display screen.

[0084] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined by the claims.

Claims

1. A temperature detection system for a display device, characterized in that, Comprising: A plurality of temperature detection units arranged in an array within the backlight board of the display device, each temperature detection unit being configured to detect temperature information within its respective area and output it; A data processing unit, configured to send a temperature anomaly message to a first device when the temperature information is greater than or equal to a first threshold; The temperature detection unit includes a temperature change sub-unit and a detection sub-unit; the temperature change sub-unit is configured to output a corresponding temperature change voltage according to a change in temperature; the detection sub-unit is configured to receive and detect the temperature change voltage and output the temperature information according to the detection result; The temperature change sub-unit includes a first triode, a second triode, and a current source; the negative electrode of the current source is connected to the internal power supply voltage of the driving chip, the positive electrode of the current source is connected to the collector of the first triode and serves as the output terminal of the temperature change sub-unit; the first end of the base of the first triode, the temperature change sub-unit is connected to its own collector, the emitter of the first triode is connected to the collector of the second triode; the base of the second triode is connected to its own collector, and the emitter of the second triode is connected to the ground terminal.

2. The temperature detection system of the display device according to claim 1, wherein Also includes a plurality of driving chips arranged in an array, each driving chip including the temperature detection unit.

3. The temperature detection system of the display device according to claim 1, wherein The temperature change sub-unit includes a thermistor and a current source; the negative electrode of the current source is connected to the internal power supply voltage of the driving chip, the positive electrode of the current source is connected to the first end of the thermistor; the second end of the thermistor is connected to the ground terminal.

4. The temperature detection system of the display device according to claim 1, characterized in that, The detection sub-unit includes at least any one of a comparator and an analog-to-digital converter.

5. The temperature detection system of the display device according to claim 2, wherein, The data processing unit is further configured to generate temperature anomaly distribution data according to the temperature information output by each driving chip.

6. The temperature detection system of the display device according to claim 1, characterized in that, The first device includes at least any one or more of a mobile phone, a home security system, and a fire alarm system.

7. The temperature detection system of the display device according to claim 1, characterized in that, The data processing unit includes at least any one of a BCON, an MCU, a single-chip microcomputer, a TCON, an SOC, and a Scaler.

8. A backlight panel, characterized in that, Comprising a plurality of temperature detection units and LED lamp beads of the temperature detection system of the display device according to any one of claims 1 to 7.

9. A display device, characterized in that, Comprising the backlight board and the liquid crystal display screen according to claim 8.

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