A heat dissipation system for an organic electroluminescent display panel

Abstract

The present invention provides an organic electroluminescent display panel heat dissipation system, which belongs to the field of display technology. The system is provided with a micro-vapor compression refrigeration module, which is used to cool the organic electroluminescent display panel, and is also provided with a temperature monitoring module, which is used to monitor the temperature of the organic electroluminescent display panel in real time and convert the temperature into a temperature electrical signal, and a central control module which is respectively communicated with the micro-vapor compression refrigeration module and the temperature monitoring module. The central control module includes a support vector regression unit, which is used to construct a temperature change model according to the real-time temperature electrical signal obtained. The central control module controls the micro-vapor compression refrigeration module in combination with the temperature change model and the obtained temperature electrical signal to achieve cooling, thereby solving the problem that a large amount of heat generated by the organic electroluminescent display panel during operation cannot be dissipated in a timely and effective manner.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a heat dissipation system for an organic electroluminescent display panel. Background Art

[0002] Organic electroluminescent display panel is a new display technology with many advantages. It is a new display technology after CRT picture tube and LCD liquid crystal display. Organic electroluminescent display panel has the characteristics of high contrast, bright colors, fast response speed, etc., which makes the display effect more outstanding. At the same time, its light and flexible characteristics also bring more room for innovation.

[0003] With the continuous development of display technology, organic electroluminescent display panels have been widely used in many fields such as smart phones, TVs, tablet computers, etc. However, organic electroluminescent display panels generate a lot of heat during operation. If the heat cannot be dissipated in a timely and effective manner, the panel temperature will rise, which will affect its luminous efficiency, lifespan and display quality. Summary of the invention

[0004] The present invention provides an organic electroluminescent display panel heat dissipation system, which is used to solve the defect in the prior art that a large amount of heat generated by the organic electroluminescent display panel during operation cannot be dissipated promptly and effectively.

[0005] In one aspect, the present invention provides an organic electroluminescent display panel heat dissipation system, comprising:

[0006] A micro vapor compression refrigeration module, the micro vapor compression refrigeration module is used to cool the organic electroluminescent display panel, the micro vapor compression refrigeration module comprises an evaporator, the evaporator is bonded to the back surface of the organic electroluminescent display panel, and the evaporator is used to absorb heat generated by the organic electroluminescent display panel;

[0007] A temperature monitoring module, which is used to monitor the temperature of the organic electroluminescent display panel in real time and convert the temperature into a temperature electrical signal;

[0008] A central control module, wherein the central control module is respectively connected to the micro steam compression refrigeration module and the temperature monitoring module in communication, and the central control module comprises a support vector regression unit, wherein the support vector regression unit is used to construct a temperature change model according to the real-time temperature electrical signal acquired, and the central control module controls the micro steam compression refrigeration module to achieve cooling by combining the temperature change model and the acquired temperature electrical signal.

[0009] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the micro-vapor compression refrigeration module includes a first cooling mode, a second cooling mode and a third cooling mode, the first cooling mode uses less power than the second cooling mode, and the second cooling mode uses less power than the third cooling mode.

[0010] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the central control module controls the micro-steam compression refrigeration module to achieve cooling in combination with the temperature change model and the acquired temperature electrical signal, including: when the temperature value of the temperature electrical signal is predicted to be lower than or equal to the first set temperature threshold, the central control module controls the micro-steam compression refrigeration module to start the first cooling mode; when the temperature value of the temperature electrical signal is predicted to be higher than the first set temperature threshold and lower than the second set temperature threshold, the central control module controls the micro-steam compression refrigeration module to start the second cooling mode; when the temperature value of the temperature electrical signal is predicted to be higher than the second set temperature threshold, the central control module controls the micro-steam compression refrigeration module to start the third cooling mode.

[0011] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the first set temperature threshold is greater than the second set temperature threshold.

[0012] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the first set temperature threshold is 40°C, and the second set temperature threshold is 65°C.

[0013] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the micro-vapor compression refrigeration module also includes a micro-refrigeration compressor and a condenser, the micro-refrigeration compressor is arranged on the back of the organic electroluminescent display panel, the condenser is arranged on one side of the organic electroluminescent display panel, the micro-refrigeration compressor is connected to the evaporator, the condenser is connected to the micro-refrigeration compressor, and the condenser is used to transfer the heat of the steam delivered by the micro-refrigeration compressor.

[0014] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the micro-refrigeration compressor is a DC rolling rotor compressor, and the condenser is a parallel flow heat exchanger.

[0015] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the micro vapor compression refrigeration module also includes a control unit, the control unit is communicatively connected to the central control module, and the control unit is used to monitor and control the start and stop of the micro refrigeration compressor.

[0016] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the support vector regression unit uses a radial basis kernel function to construct the temperature change model.

[0017] According to an organic electroluminescent display panel heat dissipation system provided by the present invention, the support vector regression unit includes using the radial basis kernel function to create a support vector regression model and training the temperature change model.

[0018] The present invention provides a heat dissipation system for an organic electroluminescent display panel. The heat dissipation system comprises a micro-vapor compression refrigeration module, which is used to cool the organic electroluminescent display panel. The micro-vapor compression refrigeration module comprises an evaporator, which is bonded to the back of the organic electroluminescent display panel and used to absorb the heat generated by the organic electroluminescent display panel. The heat dissipation system also comprises a temperature monitoring module, which is used to monitor the temperature of the organic electroluminescent display panel in real time and convert the temperature into a temperature electrical signal. The heat dissipation system also comprises a central control module which is communicatively connected to the micro-vapor compression refrigeration module and the temperature monitoring module respectively. The central control module comprises a support vector regression unit, which is used to construct a temperature change model according to the real-time temperature electrical signal obtained. The central control module controls the micro-vapor compression refrigeration module to cool the temperature by combining the temperature change model and the obtained temperature electrical signal. The problem that a large amount of heat generated by the organic electroluminescent display panel during operation cannot be dissipated in a timely and effective manner is solved, and the panel temperature is timely reduced, thereby improving the luminous efficiency, lifespan and display quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 is a schematic structural diagram of a heat dissipation system for an organic electroluminescent display panel provided by an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of a flow chart of a temperature change model constructed by a central control module in a heat dissipation system of an organic electroluminescent display panel provided by an embodiment of the present invention.

[0022] Reference numerals:

[0023] 1. Organic electroluminescent display panel; 10. Micro vapor compression refrigeration module; 20. Temperature monitoring module; 30. Central control module. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Combine the following Figure 1-Figure 2 A schematic diagram of the structure of the heat dissipation system of the organic electroluminescent display panel of the present invention and a schematic diagram of the flow of the central control module 30 in the heat dissipation system of the organic electroluminescent display panel provided by an embodiment of the present invention constructing a temperature change model are described.

[0026] like Figure 1 As shown, Figure 1 1 is a schematic diagram of the structure of the heat dissipation system of the organic electroluminescent display panel provided by the embodiment of the present invention. The heat dissipation system of the organic electroluminescent display panel provided by the embodiment of the present invention includes a micro-vapor compression refrigeration module 10, the micro-vapor compression refrigeration module 10 is used to cool the organic electroluminescent display panel 1, the micro-vapor compression refrigeration module 10 includes an evaporator, the evaporator is bonded to the back of the organic electroluminescent display panel 1, the evaporator is used to absorb the heat generated by the organic electroluminescent display panel 1, wherein the bonding and connection between the evaporator and the back of the organic electroluminescent display panel 1 can ensure that the heat generated by the organic electroluminescent display panel 1 is quickly absorbed, the evaporator adopts a flat evaporator, which is tightly bonded to the back of the organic electroluminescent display panel 1, in addition, the micro-vapor compression refrigeration module 10 is provided with a refrigerant, the evaporator takes away the heat through the evaporation process of the refrigerant, in this embodiment, the evaporator includes a pipe and a fin, the refrigerant flows in the pipe, and the function of the fin is to increase the contact area between the evaporator and the air and improve the evaporation efficiency.

[0027] In this embodiment, the micro-steam compression refrigeration module 10 also includes a micro-refrigeration compressor, which is used to compress low-temperature and low-pressure refrigerant vapor into high-temperature and high-pressure gas to provide power for the circulation of the refrigerant in the system. The operating condition of the micro-refrigeration compressor directly affects the performance and efficiency of the entire refrigeration system. In addition, the micro-refrigeration compressor has the advantages of compact structure, stable operation, and high efficiency. It is suitable for use in the limited space environment of the organic electroluminescent display panel 1. In this embodiment, the micro-refrigeration compressor is a DC rolling rotor compressor.

[0028] In this embodiment, the micro-steam compression refrigeration module 10 is also provided with a condenser, the micro-refrigeration compressor is arranged on the back of the organic electroluminescent display panel 1, and the condenser is arranged on one side of the organic electroluminescent display panel 1. The micro-refrigeration compressor is connected to the evaporator, and the condenser is connected to the micro-refrigeration compressor. The condenser is used to transfer the heat of the steam delivered by the micro-refrigeration compressor. The condenser cools the high-temperature and high-pressure refrigerant gas discharged from the micro-refrigeration compressor and condenses it into liquid. In this process, the refrigerant releases a large amount of heat, which needs to be dissipated to the surrounding environment through the condenser. In the organic electroluminescent display panel 1 in this embodiment, the condenser has good heat dissipation performance, which can ensure that the refrigerant can be quickly and effectively cooled and condensed to ensure the cooling effect.

[0029] Among them, the condenser includes a pipe and a heat sink, the refrigerant flows in the pipe, and the heat sink increases the contact area with the air, thereby improving the heat dissipation efficiency. Optimally, the heat sink is made of aluminum or copper, which has good thermal conductivity. The condenser is a flat or curved structure so that it can better fit with the back of the organic electroluminescent display panel 1 or be installed around the organic electroluminescent display panel 1. In this embodiment, the condenser can be a parallel flow heat exchanger, which can increase the heat dissipation area and improve the heat dissipation efficiency.

[0030] In this embodiment, the micro-steam compression refrigeration module 10 can also be provided with a throttling device. The function of the throttling device is to throttle and reduce the pressure of the high-pressure liquid refrigerant flowing out of the condenser to convert it into a low-pressure liquid refrigerant, and then enter the evaporator for evaporation. The throttling device can control the flow rate and pressure of the refrigerant to ensure the normal operation of the refrigeration system. Specifically, the throttling device can be a capillary tube, a thermal expansion valve, an electronic expansion valve, etc. In the micro-steam compression refrigeration module 10, due to the miniaturization of the system and the precise requirements for the refrigerant flow control, it is best to use an electronic expansion valve, which can adjust the refrigerant flow rate in real time according to the operating status of the system to improve the performance and efficiency of the refrigeration system.

[0031] In this embodiment, the micro steam compression refrigeration module 10 also includes a control unit, which is communicatively connected to the central control module 30. The control unit is used to monitor and control the operating status of the micro steam compression refrigeration module 10, including parameters such as switch, temperature, pressure, and refrigerant flow. The control unit can realize automatic adjustment and protection of the micro steam compression refrigeration module 10 to ensure the safe and stable operation of the micro steam compression refrigeration module 10.

[0032] Please refer to Figure 1In this embodiment, the organic electroluminescent display panel heat dissipation system is further provided with a temperature monitoring module 20, and the temperature monitoring module 20 is used to monitor the temperature of the organic electroluminescent display panel 1 in real time and convert the temperature into a temperature electrical signal.

[0033] Please refer to Figure 1 In this embodiment, the organic electroluminescent display panel heat dissipation system is further provided with a central control module 30, and the central control module 30 is respectively communicated with the micro steam compression refrigeration module 10 and the temperature monitoring module 20, and the central control module 30 includes a support vector regression unit, and the support vector regression unit is used to construct a temperature change model according to the real-time temperature electrical signal obtained. The central control module 30 controls the micro steam compression refrigeration module 10 to achieve cooling in combination with the temperature change model and the obtained temperature electrical signal.

[0034] In this embodiment, the micro steam compression refrigeration module 10 includes a first cooling mode, a second cooling mode and a third cooling mode, the power used in the first cooling mode is less than the power used in the second cooling mode, the power used in the second cooling mode is less than the power used in the third cooling mode, and the central control module 30 controls the micro steam compression refrigeration module 10 to achieve cooling in combination with the temperature change model and the acquired temperature electrical signal, including: when the central control module 30 predicts that the temperature value of the temperature electrical signal is lower than or equal to the first set temperature threshold value in combination with the temperature change model and the acquired temperature electrical signal, the central control module 30 controls the micro steam compression refrigeration module 10 to turn on the first cooling mode, and when the central control module 30 predicts that the temperature value of the temperature electrical signal is lower than or equal to the first set temperature threshold value in combination with the temperature change model and the acquired temperature electrical signal If the temperature is higher than the first set temperature threshold and lower than the second set temperature threshold, the central control module 30 controls the micro-steam compression refrigeration module 10 to start the second cooling mode. When the central control module 30 predicts that the temperature value of the temperature electrical signal is higher than the second set temperature threshold by combining the temperature change model and the acquired temperature electrical signal, the central control module 30 controls the micro-steam compression refrigeration module 10 to start the third cooling mode. Specifically, the first set temperature threshold is greater than the second set temperature threshold. Optimally, the first set temperature threshold is 40°C and the second set temperature threshold is 65°C. Different power mode settings can be based on the different heat generated by the organic electroluminescent display panel 1 under different circumstances. By adopting the corresponding cooling mode, the consumption of the organic electroluminescent display panel can be minimized.

[0035] In this embodiment, the support vector regression unit uses a radial basis kernel function to construct the temperature change model. The support vector regression unit includes using the radial basis kernel function to create a support vector regression model and training the temperature change model. Figure 2 The support vector regression unit in the central control module 30 uses the radial basis kernel function to construct the temperature change model as follows:

[0036] S10, collecting data sets related to temperature changes, including historical temperature data and related characteristic data that may affect the temperature, for example, data on factors such as the operating time, power, ambient humidity, and heat dissipation conditions of the organic electroluminescent display panel 1 , which can be obtained from the temperature monitoring module 20 .

[0037] S20. Ensure the accuracy and completeness of the data and handle missing values ​​and outliers. For a small number of missing values, data interpolation methods such as linear interpolation and mean interpolation can be used to fill them. For outliers, they can be judged and corrected based on the distribution of data in the data set, or directly deleted.

[0038] S30. Divide the collected data set into a training set and a test set. The training set is used to train the model, and the test set is used to evaluate the performance and generalization ability of the model. The common division ratio is 70% (training set) and 30% (test set), but the specific ratio can be adjusted according to the amount of data and actual conditions. When dividing the data, the randomness of the data must be ensured to avoid the order or distribution of the data affecting the division result. Random sampling can be used for division.

[0039] S40. Analyze the correlation between each collected feature and temperature. You can use correlation coefficient analysis, feature importance assessment and other methods to screen out features that have a significant impact on temperature changes. For example, calculate the Pearson correlation coefficient between each feature and temperature, and select features with larger absolute values ​​of correlation coefficients as important features. Since the radial basis kernel function is sensitive to the scale of the feature, the feature needs to be scaled. The features of the training set and the test set should be scaled in the same way to ensure data consistency, and finally perform S50 model training.

[0040] The present invention provides an organic electroluminescent display panel heat dissipation system, which is provided with a micro-vapor compression refrigeration module 10, wherein the micro-vapor compression refrigeration module 10 is used to cool the organic electroluminescent display panel 1, wherein the micro-vapor compression refrigeration module 10 includes an evaporator, wherein the evaporator is bonded to the back of the organic electroluminescent display panel 1, wherein the evaporator is used to absorb the heat generated by the organic electroluminescent display panel 1, and further provided with a temperature monitoring module 20, wherein the temperature monitoring module 20 is used to monitor the temperature of the organic electroluminescent display panel 1 in real time and convert the temperature into a temperature electrical signal, and respectively communicate with the micro-vapor compression refrigeration module 10 to generate a temperature signal. The refrigeration module 10 and the temperature monitoring module 20 are communicatively connected to a central control module 30, wherein the central control module 30 includes a support vector regression unit, and the support vector regression unit is used to construct a temperature change model according to the real-time temperature electrical signal acquired. The central control module 30 controls the micro-vapor compression refrigeration module 10 to achieve cooling in combination with the temperature change model and the acquired temperature electrical signal, thereby solving the problem that a large amount of heat generated by the organic electroluminescent display panel 1 during operation cannot be dissipated in a timely and effective manner, and achieving the beneficial effect of timely reducing the panel temperature, thereby improving the luminous efficiency, lifespan and display quality.

[0041] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0042] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An organic electroluminescent display panel heat dissipation system, characterized in that: include: A micro vapor compression refrigeration module, the micro vapor compression refrigeration module is used to cool the organic electroluminescent display panel, the micro vapor compression refrigeration module comprises an evaporator, the evaporator is bonded to the back surface of the organic electroluminescent display panel, and the evaporator is used to absorb heat generated by the organic electroluminescent display panel; A temperature monitoring module, which is used to monitor the temperature of the organic electroluminescent display panel in real time and convert the temperature into a temperature electrical signal; A central control module, wherein the central control module is respectively connected to the micro steam compression refrigeration module and the temperature monitoring module in communication, the central control module comprises a support vector regression unit, the support vector regression unit is used to construct a temperature change model according to the real-time temperature electrical signal acquired, the support vector regression unit uses a radial basis kernel function to construct the temperature change model, the support vector regression unit comprises using the radial basis kernel function to create a support vector regression model, and training the temperature change model, the central control module controls the micro steam compression refrigeration module to achieve cooling in combination with the temperature change model and the acquired temperature electrical signal, the micro steam compression refrigeration module comprises a first cooling mode, a second cooling mode and a third cooling mode, the first cooling mode uses less power than the second cooling mode The power used in the second cooling mode is less than the power used in the third cooling mode, and the central control module controls the micro steam compression refrigeration module to achieve cooling in combination with the temperature change model and the acquired temperature electrical signal, including: when the temperature value of the temperature electrical signal is predicted to be lower than or equal to the first set temperature threshold, the central control module controls the micro steam compression refrigeration module to start the first cooling mode; when the temperature value of the temperature electrical signal is predicted to be higher than the first set temperature threshold and lower than the second set temperature threshold, the central control module controls the micro steam compression refrigeration module to start the second cooling mode; when the temperature value of the temperature electrical signal is predicted to be higher than the second set temperature threshold, the central control module controls the micro steam compression refrigeration module to start the third cooling mode.

2. The organic electroluminescent display panel heat dissipation system according to claim 1, characterized in that: The first set temperature threshold is greater than the second set temperature threshold.

3. The organic electroluminescent display panel heat dissipation system according to claim 1, characterized in that: The first set temperature threshold is 40°C, and the second set temperature threshold is 65°C.

4. The organic electroluminescent display panel heat dissipation system according to claim 1, characterized in that: The micro-steam compression refrigeration module also includes a micro-refrigeration compressor and a condenser. The micro-refrigeration compressor is arranged on the back of the organic electroluminescent display panel, and the condenser is arranged on one side of the organic electroluminescent display panel. The micro-refrigeration compressor is connected to the evaporator, and the condenser is connected to the micro-refrigeration compressor. The condenser is used to transfer the heat of the steam delivered by the micro-refrigeration compressor.

5. The organic electroluminescent display panel heat dissipation system according to claim 4, characterized in that: The micro-refrigeration compressor is a DC rolling rotor compressor, and the condenser is a parallel flow heat exchanger.

6. The organic electroluminescent display panel heat dissipation system according to claim 4, characterized in that: The micro steam compression refrigeration module also includes a control unit, which is communicatively connected to the central control module, and is used to monitor and control the start and stop of the micro refrigeration compressor.

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