Display device based on inverted LEDs

Abstract

The invention discloses a display device based on inverted LEDs, and relates to the technical field of LED display devices.The display device comprises a main body frame, a display panel is fixed to the main body frame, a plurality of LED units are installed on the side, located in the main body frame, of the display panel, each LED unit comprises a ceramic substrate, inverted LED chips are arranged on the side faces of the ceramic substrates, and the inverted LED chips are arranged on the side faces of the ceramic substrates. The ceramic substrate and the flip LED chip are connected through a nanometer soldering tin layer, a back plate is installed on the back of the main body frame, heat dissipation through holes are formed in the bottom of the main body frame, and a dehumidifying structure used for dehumidifying air is arranged in the main body frame. The air in the display device is dehumidified through the dehumidification structure, and the problem that electronic components in the display device are affected with damp or rusted due to damp air, and the display device is abnormal in display can be effectively solved.

Description

Technical Field

[0001] This application relates to the field of LED display device technology, and in particular to a display device based on flip-chip LEDs. Background Technology

[0002] As a core carrier of information interaction, displays have become deeply integrated into all aspects of modern life, from smartphones and tablets to large commercial displays and automotive display systems. Technological iterations have consistently focused on higher brightness, better contrast, lower power consumption, and longer lifespan. Among numerous display technologies, flip-chip LED-based displays, with their unique structural design and performance advantages, have gradually become the focus of industry attention, bringing new breakthroughs to the display field.

[0003] Display devices based on flip-chip LEDs employ direct flip-chip bonding, eliminating the wire bonding step required for traditional upright LEDs. This structural improvement significantly enhances heat dissipation efficiency, preventing performance degradation due to heat buildup, and also strengthens the device's mechanical stability and shock resistance. Simultaneously, this technology enables higher pixel density, delivering finer image quality, and exhibits excellent performance in response speed and energy efficiency, making it suitable for various scenarios with stringent display performance requirements.

[0004] However, these flip-chip LED-based displays are quite sensitive to ambient humidity during use. When the air humidity is high, moisture can easily penetrate into the display device, affecting the circuit components, solder joints, and encapsulation materials. Moisture can cause corrosion and oxidation of metal parts, leading to poor circuit contact, or cause the encapsulation colloid to age and fail, resulting in problems such as display flickering, uneven brightness, or even blackout areas, seriously affecting the display effect and the lifespan of the device. Summary of the Invention

[0005] The purpose of this application is to address the problem mentioned in the background art that moisture can easily affect the display effect of display devices, and to provide a display device based on flip-chip LEDs.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution: A display device based on flip-chip LEDs includes a main frame, a display panel fixed on the main frame, multiple LED units mounted on one side of the display panel inside the main frame, each LED unit including a ceramic substrate, a flip-chip LED chip disposed on the side of the ceramic substrate, the ceramic substrate and the flip-chip LED chip being connected by a nano-solder layer, a back plate mounted on the back of the main frame, heat dissipation holes opened at the bottom of the main frame, and a dehumidification structure for dehumidifying the air inside the main frame.

[0007] By adopting the above technical solution, during use, external current is transmitted to the conductive pads through the grid-like conductive lines of the ceramic substrate, and then conducted through the nano-solder layer to the electrode at the bottom of the flip-chip, driving the flip-chip to emit light. The heat generated by the chip is directly transferred to the ceramic substrate through the bottom electrode and the nano-solder layer, and then quickly discharged through microchannels. The light emitted by the blue chip penetrates the phosphor film layer, exciting the phosphor to produce mixed white light. The flip-chip, without leads occupying space, achieves high-density integration. The encapsulation layer forms overall protection, preventing the external environment from affecting the chip. During use, the dehumidification structure effectively reduces the impact of humid air on the normal operation of the display device.

[0008] Furthermore, the dehumidification structure includes a dehumidification box fixed inside the main frame, a side plate fixed to the side of the dehumidification box, an air inlet pipe fixed to the lower end of the dehumidification box, a guide pipe fixed to the upper end of the dehumidification box, a diversion pipe fixed to the end of the guide pipe away from the dehumidification box, multiple air outlet pipes fixed to the diversion pipe, the diversion pipe being fixedly connected to the main frame, and a dehumidification component being provided inside the dehumidification box.

[0009] By adopting the above technical solution, the dehumidification structure can absorb moisture from the humid air inside the main frame, which can effectively reduce the problem of abnormal display caused by moisture or corrosion of electronic components inside the display device due to air humidity.

[0010] Furthermore, the dehumidification assembly includes a drive motor fixed to the side of the dehumidification box, a drive shaft fixed to the output end of the drive motor, the drive shaft extending into the dehumidification box and rotatably connected to the dehumidification box, an impeller fixed on the drive shaft, and a moisture-absorbing box fixed inside the dehumidification box for placing activated alumina particles.

[0011] By adopting the above technical solution, the moisture absorption component is used to draw humid air from inside the main frame into the dehumidification box and treat the humid air.

[0012] Furthermore, the desiccant box is rotatably connected to a first flipping shaft and a second flipping shaft, and flipping blades are fixed on both the first flipping shaft and the second flipping shaft. One end of both the first flipping shaft and the second flipping shaft passes through the desiccant box.

[0013] By adopting the above technical solution, the rotation of the first and second flipping shafts can drive the impeller to rotate. By driving the impeller to rotate, the active alumina particles inside the moisture absorption box can be flipped, so that the active alumina particles can fully contact the humid air, thereby improving the moisture absorption effect.

[0014] Furthermore, a first pulley is fixed on the drive shaft, and a second pulley is fixed at one end of the first turning shaft that passes through the dehumidification box. The first pulley and the second pulley are connected by a transmission belt, and the diameter of the first pulley is smaller than the diameter of the second pulley.

[0015] By adopting the above technical solution, the first pulley, in conjunction with the transmission belt and the second pulley, can play a role in transmission.

[0016] Furthermore, a first drive gear is fixed to one end of the first tilting shaft extending out of the dehumidification box, and a second drive gear that meshes with the first drive gear is fixed to one end of the second tilting shaft extending out of the dehumidification box.

[0017] By adopting the above technical solution, the first drive gear cooperates with the second drive gear to achieve the function of transmission.

[0018] Furthermore, a humidity sensor is installed inside the main frame.

[0019] By adopting the above technical solution, the humidity sensor can monitor the air humidity inside the display device in real time. When the air humidity is high, it can activate the dehumidification structure in conjunction with the central processing unit to achieve intelligent dehumidification.

[0020] Furthermore, an electric telescopic rod is fixed to the bottom of the main frame, and a sealing plate is fixed to the telescopic end of the electric telescopic rod, with the sealing plate slidably disposed with respect to the main frame.

[0021] By adopting the above technical solution, when it is necessary to dehumidify the inside of the display device, the heat dissipation holes can be sealed, effectively reducing the entry of external humid air into the display device, thereby improving the dehumidification effect.

[0022] In summary, this application includes at least one of the following beneficial effects; 1. In this application, when dehumidification of the display device is required, the drive motor is turned on to rotate the impeller. The rotation of the impeller accelerates the airflow inside the dehumidification box, drawing air from inside the display device into the dehumidification box through the air inlet pipe. The air entering the dehumidification box passes through the dehumidification box and comes into contact with the activated alumina particles inside the dehumidification box. The activated alumina particles absorb the moisture in the air. The air is then transported to the distribution pipe through the guide pipe and finally flows out from the air outlet pipe. By repeatedly drawing air from inside the display device, dehumidification of the air inside the display device is achieved. This effectively reduces the problem of display abnormalities caused by moisture or corrosion of electronic components inside the display device due to humid air.

[0023] 2. In this application, during the rotation of the impeller driven by the drive shaft, the first agitation shaft rotates under the action of the first pulley, the transmission belt, and the second pulley. When the first agitation shaft rotates, the first and second drive gears cause the agitation blades to rotate, thereby agitating the activated alumina particles inside the desiccant box. Agitating the activated alumina particles moves unsaturated particles from the surface of the desiccant box to the bottom, maintaining a stable overall moisture absorption rate for the activated alumina particles. This effectively prevents the bottom activated alumina particles from becoming saturated with moisture first, thus avoiding a decrease in moisture absorption capacity.

[0024] 3. In this application, during the continuous moisture absorption process, the activated alumina particles are prone to sticking together and clumping when placed statically. The clumped particles make the air circulation too obstructed, resulting in a decrease in moisture absorption efficiency. However, by using the first and second stirring shafts to drive the stirring blades to stir the activated alumina particles, the particles that are about to stick together can be broken up in real time by mechanical force, avoiding the formation of clumps. This keeps the desiccant in a dispersed particle state, ensuring air circulation and making it more conducive to dehumidifying the air.

[0025] 4. In this application, since the diameter of the first drive gear is smaller than that of the second drive gear, the rotational speed of the first flipping shaft is greater than that of the second flipping shaft. By using the first and second flipping shafts with different positions and rotational speeds, the flipping effect of the activated alumina particles can be improved, so that the activated alumina particles can be fully flipped inside the moisture absorption box, which is more conducive to dehumidifying the inside of the display device.

[0026] 5. In this application, during the use of the display device, the humidity sensor can monitor the air humidity inside the main frame in real time. When the detected air humidity is higher than a preset threshold, it sends a signal to the central controller, which then sends a control signal to the drive motor, causing the drive motor to start working. This achieves intelligent dehumidification, eliminating the need for the dehumidification structure to be constantly operational; it only starts working when the air humidity exceeds the preset threshold. Simultaneously, the central controller sends a control signal to the electric telescopic rod, causing it to extend its telescopic end. When the telescopic end of the electric telescopic rod extends, it moves the sealing plate, which seals the heat dissipation holes. This effectively reduces the entry of external humid air into the main frame, thus facilitating dehumidification of the air inside the main frame. Attached Figure Description

[0027] Figure 1 This is a first three-dimensional structural schematic diagram of the display device in this application; Figure 2 This is a second three-dimensional structural schematic diagram of the display device in this application; Figure 3This is a schematic diagram of the internal structure of the display device in this application; Figure 4 This is a schematic diagram of the internal structure of the LED unit in this application; Figure 5 This is a three-dimensional structural diagram of the moisture-removing structure in this application; Figure 6 This is a schematic diagram of the internal structure of the dehumidifier box in this application; Figure 7 This is a schematic diagram of the transmission between the drive shaft, the first tilting shaft, and the second tilting shaft in this application.

[0028] Explanation of reference numerals in the attached figures: 1. Main frame; 11. Display panel; 12. LED unit; 121. Ceramic substrate; 122. Flip-chip LED chip; 123. Nano solder layer; 13. Back plate; 14. Heat dissipation hole; 2. Dehumidification box; 21. Side plate; 22. Air inlet pipe; 23. Guide pipe; 24. Diverter pipe; 25. Air outlet pipe; 26. Drive motor; 261. Drive shaft; 262. Impeller; 263. Moisture absorption box; 27. First flipping shaft; 271. Second flipping shaft; 272. Flipping blade; 28. First pulley; 281. Second pulley; 282. Transmission belt; 283. First drive gear; 284. Second drive gear; 29. ​​Humidity sensor; 3. Electric telescopic rod; 31. Sealing plate. Detailed Implementation

[0029] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0030] This application discloses a display device based on flip-chip LEDs.

[0031] Reference Figures 1-4A display device based on flip-chip LEDs includes a main frame 1, a central processing unit (CPU) built into the main frame 1, a display panel 11 fixed on the main frame 1, and multiple LED units 12 mounted on one side of the display panel 11 inside the main frame 1. Each LED unit 12 includes a ceramic substrate 121, the surface of which is etched with a grid-like conductive line, and circular conductive pads at the line nodes. Flip-chip LED chips 122 are disposed on the side of the ceramic substrate 121, and the ceramic substrate 121 and the flip-chip LED chips 122 are connected by a nano-solder layer 123. The bottom of the flip-chip LED chips 122... Four electrodes are arranged in a matrix, and the electrode surfaces are covered with a nickel-gold plating layer. The chip is soldered and fixed to the conductive pads of the ceramic substrate 121 through a nano solder layer 123. The phosphor film layer is attached to the top surface of the flip-chip by electrostatic adsorption. The transparent encapsulation layer is covered on the surface of the ceramic substrate 121 by a vacuum potting process. Adhesive seals and wraps all the flip-chip, phosphor film layer and some conductive lines. The electrodes and conductive pads correspond one-to-one to form an electrical path. A back plate 13 is installed on the back of the main frame 1. A heat dissipation hole 14 is opened at the bottom of the main frame 1. A dehumidification structure for dehumidifying the air is set inside the main frame 1.

[0032] In use, external current is transmitted to the conductive pads through the grid-like conductive lines of the ceramic substrate 121, and then conducted to the electrode at the bottom of the flip-chip LED through the nano solder layer 123, driving the flip-chip LED 122 to emit light. The heat generated by the chip is directly transferred to the ceramic substrate 121 through the bottom electrode and the nano solder layer 123, and then quickly discharged through the microchannel. The light emitted by the blue chip penetrates the phosphor film layer, exciting the phosphor to produce mixed white light. Since the metal leads are eliminated, light blockage is avoided, and the chip's P electrode uses a high-reflectivity nickel-gold plating layer to reflect downward light to the top surface, improving light extraction efficiency. The flip-chip LED achieves high-density integration because it occupies no space due to the absence of leads. The encapsulation layer forms an overall protection to prevent the external environment from affecting the chip.

[0033] Reference Figure 3 , Figure 5 , Figure 6 The dehumidification structure includes a dehumidification box 2 fixed inside the main frame 1. A side plate 21 is fixed to the side of the dehumidification box 2. An air inlet pipe 22 is fixed to the lower end of the dehumidification box 2. A guide pipe 23 is fixed to the upper end of the dehumidification box 2. A diversion pipe 24 is fixed to the end of the guide pipe 23 away from the dehumidification box 2. Multiple air outlet pipes 25 are fixed on the diversion pipe 24. The diversion pipe 24 is fixedly connected to the main frame 1. A dehumidification component is installed inside the dehumidification box 2.

[0034] The dehumidification component includes a drive motor 26 fixed to the side of the dehumidification box 2. The output end of the drive motor 26 is fixed with a drive shaft 261. The drive shaft 261 extends into the dehumidification box 2 and is rotatably connected to the dehumidification box 2. An impeller 262 is fixed on the drive shaft 261. A moisture-absorbing box 263 is fixed inside the dehumidification box 2. The moisture-absorbing box 263 is used to place activated alumina particles.

[0035] When dehumidification of the display device is required, the drive motor 26 is turned on, which drives the drive shaft 261 to rotate, thereby driving the impeller 262 to rotate. The rotation of the impeller 262 can accelerate the airflow inside the dehumidification box, drawing the air inside the display device into the dehumidification box 2 through the air inlet pipe 22. The air entering the dehumidification box 2 passes through the dehumidification box 263 and comes into contact with the activated alumina particles inside the dehumidification box 263. The activated alumina particles can absorb the moisture in the air. Then the air is transported to the distribution pipe 24 through the guide pipe 23 and finally flows out from the air outlet pipe 25. By repeatedly drawing air from the display device, dehumidification of the air inside the display device is achieved, which can effectively reduce the problem of display abnormalities caused by moisture or corrosion of electronic components inside the display device due to humid air.

[0036] Reference Figures 5-7 The desiccant box 263 is rotatably connected to a first flipping shaft 27 and a second flipping shaft 271. Both the first flipping shaft 27 and the second flipping shaft 271 are fixed with flipping blades 272. One end of the first flipping shaft 27 and the second flipping shaft 271 passes through the desiccant box 2.

[0037] The drive shaft 261 is fixed with a first pulley 28, and the first turning shaft 27 passes through one end of the dehumidification box 2 and is fixed with a second pulley 281. The first pulley 28 and the second pulley 281 are connected by a transmission belt 282. The diameter of the first pulley 28 is smaller than the diameter of the second pulley 281.

[0038] In addition, a first drive gear 283 is fixed to one end of the first flipping shaft 27 extending out of the dehumidification box 2, and a second drive gear 284 that meshes with the first drive gear 283 is fixed to one end of the second flipping shaft 271 extending out of the dehumidification box 2. The diameter of the first drive gear 283 is smaller than the diameter of the second drive gear 284.

[0039] During the rotation of the impeller 262 driven by the drive shaft 261, the drive shaft 261 drives the first pulley 28 to rotate. Then, under the action of the transmission belt 282, the second pulley 281 rotates, causing the first agitation shaft 27 to rotate. When the first agitation shaft 27 rotates, the first drive gear 283 rotates, driving the second drive gear 284 to rotate. This causes the first and second agitation shafts 271 to drive the agitation blades 272 to rotate, thus agitating the activated alumina particles inside the dehumidification box 263. By agitating the activated alumina particles, unsaturated particles on the surface of the dehumidification box are turned to the bottom, maintaining a stable overall moisture absorption rate of the activated alumina particles. This effectively avoids the problem of reduced moisture absorption capacity caused by the bottom activated alumina particles becoming saturated with moisture first upon contact with humid air. During continuous moisture absorption, activated alumina particles tend to clump together when statically placed. This clumping hinders airflow, reducing absorption efficiency. However, by using the first and second agitator shafts to drive the agitator blades, the activated alumina particles are agitated. This mechanical force breaks up any particles about to clump together, preventing clumping and ensuring the desiccant remains dispersed, thus guaranteeing airflow and facilitating dehumidification. Furthermore, because the diameter of the first drive gear 283 is smaller than that of the second drive gear, the rotational speed of the first flipping shaft 27 is greater than that of the second flipping shaft 271. The different heights and rotational speeds of the first and second flipping shafts 27 and 271 enhance the agitation of the activated alumina particles, allowing them to move freely within the moisture-absorbing box 263, further improving dehumidification of the display device.

[0040] Reference Figure 3 A humidity sensor 29 is installed inside the main frame 1.

[0041] An electric telescopic rod 3 is fixed at the bottom of the main frame 1. A sealing plate 31 is fixed at the telescopic end of the electric telescopic rod 3. The sealing plate 31 is slidably set with the main frame 1.

[0042] During the use of this display device, the humidity sensor 29 can monitor the air humidity inside the main frame 1 in real time. When the detected air humidity is higher than the preset threshold, it sends a signal to the central controller, which then sends a control signal to the drive motor 26, causing the drive motor 26 to start working. This achieves intelligent dehumidification, eliminating the need for the dehumidification structure to be constantly in operation. It only starts working when the air humidity is higher than the preset threshold. At the same time, the central controller sends a control signal to the electric telescopic rod 3, causing the electric telescopic rod 3 to work and extend its telescopic end. When the telescopic end of the electric telescopic rod 3 extends, it drives the sealing plate 31 to move, which seals the heat dissipation holes. This effectively reduces the amount of external humid air entering the main frame 1, making it more effective for dehumidifying the air inside the main frame 1.

[0043] Working principle: During use, external current is transmitted to the conductive pads through the grid-like conductive lines of the ceramic substrate 121, and then conducted to the bottom electrode of the flip-chip LED through the nano solder layer 123, driving the flip-chip LED 122 to emit light. The heat generated by the chip is directly transferred to the ceramic substrate 121 through the bottom electrode and the nano solder layer 123, and then quickly discharged through the microchannel; the light emitted by the blue chip penetrates the phosphor film layer, exciting the phosphor to produce mixed white light. Since the metal leads are eliminated, light blockage is avoided, and the chip's P electrode uses a high-reflectivity nickel-gold plating layer to reflect downward light to the top surface, improving light extraction efficiency; the flip-chip LED achieves high-density integration because it occupies no space due to the absence of leads; the encapsulation layer forms an overall protection to prevent the external environment from affecting the chip; When dehumidification of the display device is required, the drive motor 26 is turned on, which drives the drive shaft 261 to rotate, thereby driving the impeller 262 to rotate. The rotation of the impeller 262 can accelerate the air flow rate inside the dehumidification box, drawing the air inside the display device into the dehumidification box 2 through the air inlet pipe 22. The air entering the dehumidification box 2 passes through the dehumidification box 263 and comes into contact with the activated alumina particles inside the dehumidification box 263. The activated alumina particles can absorb the moisture in the air. Then the air is transported to the diversion pipe 24 through the guide pipe 23 and finally flows out from the air outlet pipe 25. By repeatedly drawing air from the display device, the dehumidification of the air inside the display device is achieved, which can effectively reduce the problem of display abnormalities caused by moisture or corrosion of electronic components inside the display device due to humid air. During the rotation of the impeller 262 driven by the drive shaft 261, the drive shaft 261 drives the first pulley 28 to rotate. Then, under the action of the transmission belt 282, the second pulley 281 rotates, causing the first agitation shaft 27 to rotate. When the first agitation shaft 27 rotates, the first drive gear 283 rotates, driving the second drive gear 284 to rotate. This causes the first and second agitation shafts 271 to drive the agitation blades 272 to rotate, thus agitating the activated alumina particles inside the desiccant box 263. By agitating the activated alumina particles, unsaturated particles on the surface of the desiccant box are turned to the bottom, maintaining a stable overall moisture absorption rate for the activated alumina particles. This effectively avoids the problem of reduced moisture absorption capacity caused by the bottom activated alumina particles becoming saturated with moisture first upon contact with humid air. During the use of this display device, the humidity sensor 29 can monitor the air humidity inside the main frame 1 in real time. When the detected air humidity is higher than the preset threshold, it sends a signal to the central controller, which then sends a control signal to the drive motor 26, causing the drive motor 26 to start working. This achieves intelligent dehumidification, eliminating the need for the dehumidification structure to be constantly in operation. It only starts working when the air humidity is higher than the preset threshold. At the same time, the central controller sends a control signal to the electric telescopic rod 3, causing the electric telescopic rod 3 to work and extend its telescopic end. When the telescopic end of the electric telescopic rod 3 extends, it drives the sealing plate 31 to move, which seals the heat dissipation holes. This effectively reduces the amount of external humid air entering the main frame 1, making it more effective for dehumidifying the air inside the main frame 1.

Claims

1. A display device based on flip-chip LEDs, comprising a main frame (1), characterized in that: A display panel (11) is fixed on the main frame (1). Multiple LED units (12) are installed on one side of the display panel (11) inside the main frame (1). The LED unit (12) includes a ceramic substrate (121). A flip-chip LED (122) is provided on the side of the ceramic substrate (121). The ceramic substrate (121) and the flip-chip LED (122) are connected by a nano solder layer (123). A back plate (13) is installed on the back of the main frame (1). A heat dissipation hole (14) is opened at the bottom of the main frame (1). A dehumidification structure for dehumidifying the air is provided inside the main frame (1).

2. A display device based on flip-chip LEDs according to claim 1, characterized in that: The dehumidification structure includes a dehumidification box (2) fixed inside the main frame (1). A side plate (21) is fixed to the side of the dehumidification box (2). An air inlet pipe (22) is fixed to the lower end of the dehumidification box (2). A guide pipe (23) is fixed to the upper end of the dehumidification box (2). A diversion pipe (24) is fixed to the end of the guide pipe (23) away from the dehumidification box (2). Multiple air outlet pipes (25) are fixed on the diversion pipe (24). The diversion pipe (24) is fixedly connected to the main frame (1). A dehumidification component is provided inside the dehumidification box (2).

3. A display device based on flip-chip LEDs according to claim 2, characterized in that: The dehumidification assembly includes a drive motor (26) fixed on the side of the dehumidification box (2). The output end of the drive motor (26) is fixed with a drive shaft (261). The drive shaft (261) extends into the dehumidification box (2) and is rotatably connected to the dehumidification box (2). An impeller (262) is fixed on the drive shaft (261). A moisture-absorbing box (263) is fixed inside the dehumidification box (2). The moisture-absorbing box (263) is used to place activated alumina particles.

4. A display device based on flip-chip LEDs according to claim 3, characterized in that: The desiccant box (263) is rotatably connected to a first flipping shaft (27) and a second flipping shaft (271). Both the first flipping shaft (27) and the second flipping shaft (271) are fixed with flipping blades (272). One end of the first flipping shaft (27) and the second flipping shaft (271) passes through the desiccant box (2).

5. A display device based on flip-chip LEDs according to claim 4, characterized in that: A first pulley (28) is fixed on the drive shaft (261), and a second pulley (281) is fixed at one end of the first turning shaft (27) that passes through the dehumidification box (2). The first pulley (28) and the second pulley (281) are connected by a transmission belt (282). The diameter of the first pulley (28) is smaller than the diameter of the second pulley (281).

6. A display device based on flip-chip LEDs according to claim 5, characterized in that: The first flipping shaft (27) is fixed with a first drive gear (283) at one end extending out of the dehumidification box (2), and the second flipping shaft (271) is fixed with a second drive gear (284) meshing with the first drive gear (283) at one end extending out of the dehumidification box (2).

7. A display device based on flip-chip LEDs according to claim 1, characterized in that: A humidity sensor (29) is installed inside the main frame (1).

8. A display device based on flip-chip LEDs according to claim 1, characterized in that: The bottom of the main frame (1) is fixed with an electric telescopic rod (3), and the telescopic end of the electric telescopic rod (3) is fixed with a sealing plate (31). The sealing plate (31) is slidably set with the main frame (1).

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