Light panels and display devices

Abstract

The present application discloses a lamp board and a display device, and relates to the technical field of mass transfer of lamp beads; the lamp board of the present application comprises a base plate, a circuit board, a heat-conducting component, a vibration plate, a vibration component and a plurality of lamp beads, the vibration component comprises an airflow circulation part, a vibration part and a limiter, the airflow circulation part is arranged on the heat-conducting component, the vibration part is arranged on a side of the airflow circulation part away from the base plate, the limiter is arranged on the heat-conducting component, one end of the vibration part is connected to the vibration plate, and the other end is abutted against the limiter, the heat-conducting component conducts the heat generated by the circuit board when working to the airflow circulation part of the vibration component, the airflow circulation part generates an airflow pulse force after absorbing the heat, impacts the vibration part to make it vibrate, thereby driving the vibration plate to vibrate, thereby driving the lamp beads to vibrate on the vibration plate; the lamp board of the present application can realize mass transfer installation of lamp beads through the internal structure of the lamp board, and no additional mass transfer equipment is required to realize the installation of lamp beads.

Description

Technical Field

[0001] The present application relates to the technical field of mass transfer of lamp beads, and in particular to a lamp board and a display device. Background Art

[0002] With the innovation and development of LED (light-emitting diode) technology, MiniLED (MiniLight Emitting Diode Display) display technology has become a new generation of display technology. It is to miniaturize and matrix the traditional LED structure, so that the size of a single LED chip is reduced to a few tenths of the traditional LED, and each LED pixel is addressed and driven to emit light individually. Since the display of MiniLED chip has the advantages of high resolution, high brightness, long life, wide operating temperature range, strong anti-interference ability, fast response speed and low power consumption, MiniLED has important application value in high-resolution display, helmet display, enhanced display, high-speed visible light communication, micro projector, optogenetics and wearable electronics.

[0003] The production of MiniLED display products requires the rapid transfer of huge quantities of MiniLEDs to the corresponding substrates. The traditional transfer technology is a "suction-release" process using a mechanical structure, that is, a suction head is used to suck up the MiniLED and then transfer it to the corresponding position on the substrate. Since this method uses the suction and release of a single chip, the speed is slow, the accuracy is low, and the cost is high. It is far from meeting the production requirements of ultra-high-definition and ultra-small pixel pitch display products, and requires the use of additional mass transfer equipment to achieve installation, which is very inconvenient. Summary of the invention

[0004] The purpose of the present application is to provide a lamp board and a display device, which can realize the mass transfer and installation of lamp beads through the internal structure of the lamp board, without the need for additional mass transfer equipment to realize the installation of the lamp beads.

[0005] The present application discloses a lamp board, which is applied to a display panel. The lamp board comprises a bottom plate, a circuit board, a heat-conducting component, a vibration plate, a vibration component and a plurality of lamp beads. The circuit board is arranged on the bottom plate; the heat-conducting component is arranged on the bottom plate and surrounds the circuit board; the vibration plate is arranged on the heat-conducting component, and a plurality of through holes are arranged on the vibration plate; the vibration component comprises an airflow circulation part, a vibration part and a stopper, the airflow circulation part is arranged on the heat-conducting component, the vibration part is arranged on a side of the airflow circulation part away from the bottom plate, and the stopper is arranged on the heat-conducting component. One end of the vibration part is connected to the vibration plate, and the other end is abutted against the limiter, and the limiter, the vibration part and the heat-conducting component enclose the airflow circulation part; the lamp bead is provided with a pin, and when the lamp bead is installed on the vibration plate, the pin passes through the through hole and is electrically connected to the circuit board; wherein, the heat-conducting component conducts the heat generated by the circuit board when the circuit board is working to the airflow circulation part of the vibration component, and the airflow circulation part generates an airflow pulse force after absorbing the heat, which impacts the vibration part to make it vibrate, thereby driving the vibration plate to vibrate, so as to drive the lamp bead to vibrate on the vibration plate.

[0006] Optionally, the air flow circulation part includes an air flow guide, a first heating chamber, a first cavity and a one-way valve, the air flow guide includes an air inlet end close to the heat conduction component, an air outlet end close to the vibration part, an air flow paddle and at least two air flow channels connecting the air inlet end and the air outlet end, the first heating chamber is arranged on the air inlet end of the air flow guide, the first cavity is arranged on the air outlet end of the air flow guide, the air flow paddle swings in the air flow guide so that the gas flows out from the two air flow channels alternately into the first cavity, the one-way valve connects the first cavity and the first heating chamber, and the gas passes through the one-way valve to enter the first heating chamber from the first cavity; wherein, the air flow flows out from the air flow channel to impact the vibration part, so that the vibration part vibrates to drive the vibration plate to vibrate.

[0007] Optionally, the vibration component also includes a reset part, which is arranged on the heat-conducting component. The reset part includes a fixing part and an elastic part, and the fixing part is arranged on the heat-conducting component. One end of the elastic part is connected to the fixing part, and the other end is connected to the vibration part; wherein, when the vibration part stops vibrating, the vibration part moves toward the bottom plate under the action of the elastic force of the elastic part.

[0008] Optionally, the vibration component further includes an elastic blocking member, one end of which is connected to the vibration part, and the other end of which is connected to the heat conductive component; wherein when the vibration part vibrates, the elastic blocking member deforms along with the vibration of the vibration part.

[0009] Optionally, a positioning groove is provided on the vibration part, and the positioning groove cooperates with the vibration plate; wherein the cross-section of the positioning groove in a direction perpendicular to the bottom plate is C-shaped.

[0010] Optionally, the heat-conducting component includes a heat-conducting outer frame arranged in the peripheral area and a heat-conducting inner frame arranged in the middle area, a gap is provided between the heat-conducting outer frame and the heat-conducting inner frame, and the circuit board is arranged in the gap; wherein the heat conductivity rate of the heat-conducting inner frame is greater than the heat conductivity rate of the heat-conducting outer frame.

[0011] Optionally, the lamp board further includes a blocking component and a second cavity, wherein the blocking component is arranged above the base plate, and the blocking component, the limiting member, the base plate and the heat conductive component together form the second cavity; wherein the heat conductive component transfers heat to the second cavity to lift up the blocking component.

[0012] Optionally, the vibration plate is provided with a plurality of mounting positions, each of the mounting positions is provided with a corresponding first positioning block, the lamp bead is provided with a second positioning block, and when the lamp bead is installed on the mounting position, the first positioning block cooperates with the second positioning block; wherein, the first positioning block and the second positioning block are magnetically matched.

[0013] Optionally, the lamp board further includes an insulating plate, and the insulating plate is arranged between the base plate and the circuit board.

[0014] The present application also discloses a display device, which includes a driving circuit and a display panel. The display panel includes the light board as described above, and the driving circuit drives the display panel.

[0015] The lamp board of the present application is provided with a heat conducting component, a vibration component and a vibration plate on the lamp board, and utilizes the heat generated by the circuit board of the lamp board itself during operation. The heat conducting component transfers the heat to the vibration component so that the vibration component generates an airflow pulse force to drive the vibration plate to vibrate, thereby enabling the lamp beads to vibrate to achieve movement to complete the installation of the lamp beads on the lamp board. Compared with the existing solution that requires the lamp beads to be transferred through a mechanical structure, the mass transfer and installation of the lamp beads can be achieved by using only the internal structure of the lamp board, and no additional mass transfer equipment is required to achieve the installation of the lamp beads, which reduces the production cost of MiniLED display products to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 is a structural schematic diagram of a light board according to the first embodiment of the present application;

[0018] Figure 2 This application Figure 1 A magnified image of point A;

[0019] Figure 3 This is a schematic diagram of the structure of the lamp panel after lamp beads are spread on the lamp panel of the first embodiment of the present application;

[0020] Figure 4 This is a schematic diagram of the structure of the lamp board of the first embodiment of the present application after the lamp beads are installed;

[0021] Figure 5 This is a schematic diagram of the structure of the lamp bead of the first embodiment of the present application;

[0022] Figure 6 is a schematic structural diagram of a heat conduction component according to a first embodiment of the present application;

[0023] Figure 7 It is a structural schematic diagram of a display device according to the second embodiment of the present application.

[0024] Among them, 100, lamp board; 110, bottom plate; 120, circuit board; 130, heat-conducting component; 131, heat-conducting outer frame; 132, heat-conducting inner frame; 140, vibration plate; 141, mounting position; 142, first positioning block; 143, through hole; 150, lamp bead; 151, second positioning block; 152, pin; 200, vibration component; 210, air circulation part; 211, air flow guide; 211a, air inlet end; 211b, air outlet end; 211c, air flow channel; 211d, air flow paddle; 212, first heating chamber; 213, first cavity; 214, one-way valve; 220 , vibration part; 221, positioning groove; 222, slider; 230, limit member; 231, limit groove; 232, protrusion; 240, reset part; 241, fixing member; 242, elastic member; 250, elastic blocking member; 300, blocking assembly; 310, blocking member; 311, sealing part; 312, blocking part; 312a, connecting part; 312b, bonding part; 313, adhesive; 320, second reset member; 400, second cavity; 410, supporting member; 500, insulating plate; 600, glass substrate; 700, display panel; 800, driving circuit; 900, display device. DETAILED DESCRIPTION

[0025] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0026] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "including" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0027] In addition, terms indicating orientation or positional relationships, such as “center,” “lateral,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside,” are described based on the orientation or relative positional relationships shown in the accompanying drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0028] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] The present application is described in detail below with reference to the accompanying drawings and optional embodiments. It should be noted that, under the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0030] The inventors of this application discovered in their daily work that when a MiniLED display product is working, its circuit board will generate heat, which is unusable energy. Usually people only consider how to dissipate the heat, but have not considered utilizing the heat. Therefore, on this basis, the inventors considered utilizing the heat in the process of mass transfer of MiniLED lamp beads, thereby obtaining the technical solution of this application. The specific technical solution is shown below.

[0031] like Figures 1 to 6As shown, as the first embodiment of the present application, a lamp board 100 is disclosed, and the lamp board 100 is applied to a display panel. The lamp board 100 includes a bottom plate 110, a circuit board 120, a heat-conducting component 130, a vibration plate 140, a vibration component 200 and a plurality of lamp beads 150. The circuit board 120 is arranged on the bottom plate 110, and the heat-conducting component 130 is arranged on the bottom plate 110 and surrounds the circuit board 120, that is, the heat-conducting component 130 and the circuit board 120 are arranged on the same layer, and the vibration plate 140 is arranged on the vibration component 200. The plate 140 is arranged on the heat-conducting component 130, and a plurality of through holes 143 are arranged on the vibration plate 140. The vibration component 200 includes an airflow circulation part 210, a vibration part 220 and a stopper 230. The airflow circulation part 210 is arranged on the heat-conducting component 130, and the vibration part 220 is arranged on a side of the airflow circulation part 210 away from the bottom plate 110. The stopper 230 is arranged on the heat-conducting component 130. One end of the vibration part 220 is connected to the vibration plate 140, and the other end is connected to the vibration plate 140. One end of the lamp 150 is in contact with the stopper 230, and the stopper 230, the vibration part 220 and the heat conducting component 130 enclose the air circulation part 210. The lamp bead 150 is provided with a pin 152. When the lamp bead 150 is installed on the vibration plate 140, the pin 152 of the lamp bead 150 passes through the through hole 143 and is electrically connected to the circuit board 120. The heat conducting component 130 conducts the heat generated by the circuit board 120 when working to the air circulation part 210 of the vibration component 200. The airflow circulation part 210 generates airflow pulse force after absorbing heat, which impacts the vibration part 220 to make it vibrate, thereby driving the vibration plate 140 to vibrate, thereby driving the lamp bead 150 to vibrate on the vibration plate 140, so that the lamp bead 150 gradually adjusts its position on the vibration plate 140 until the lamp bead 150 is installed. When the lamp bead 150 is installed, the pin 152 on the lamp bead 150 will pass through the through hole 143, so that the lamp bead 150 is electrically connected to the circuit board 120.

[0032] When assembling the lamp beads 150 of the present embodiment, the lamp beads 150 are first spread randomly on the vibration plate 140, and the circuit board 120 is energized. When energized, the circuit board 120 generates heat during operation, and the heat is conducted to the airflow circulation part 210 of the vibration component 200 along the heat-conducting component 130, heating the gas in the airflow circulation part 210 to form an airflow circulation, so that the airflow circulation part 210 generates an airflow pulse force due to the flow of gas, so as to impact the vibration part 220 located above the airflow circulation part 210, and the vibration part 220 impacted by the airflow vibrates to drive the vibration plate 140 to vibrate, so that the lamp beads 150 located on the vibration plate 140 vibrate to realize the movement of the lamp beads 150, so that the lamp beads 150 are gradually installed on the vibration plate 140 during the movement; by A heat conducting component 130, a vibration component 200 and a vibration plate 140 are arranged on the lamp board 100. The heat generated by the circuit board 120 of the lamp board 100 itself during operation is used by the heat conducting component 130 to conduct the heat to the vibration component 200 so that the vibration component 200 generates an airflow pulse force to drive the vibration plate 140 to vibrate, thereby enabling the lamp beads 150 to vibrate to achieve movement to complete the installation of the lamp beads 150 on the lamp board 100. In general, the lamp board 100 of this embodiment, compared with the existing solution that requires a mechanical structure to transfer the lamp beads 150, only needs to use the internal structure of the lamp board 100 to achieve mass transfer and installation of the lamp beads 150, and no additional mass transfer equipment is required to achieve the installation of the lamp beads 150, which reduces the production cost of the MiniLED display product to a certain extent.

[0033] Further, such as Figure 2As shown, the airflow circulation part 210 includes an airflow guide 211, a first heating chamber 212, a first cavity 213 and a one-way valve 214. The airflow guide 211 includes an air inlet end 211a close to the heat-conducting component 130, an air outlet end 211b close to the vibration part 220, an airflow paddle 211d and at least two airflow channels 211c for connecting the air inlet end 211a and the air outlet end 211b. The first heating chamber 212 is arranged on the air inlet end 211a of the airflow guide 211, and the first cavity 213 is arranged on the air outlet end 211b of the airflow guide 211. The airflow paddle 211d swings in the airflow guide 211 so that the gas alternately flows out from the two airflow channels 211c into the first cavity 213. The one-way valve 214 connects the first cavity 213 and the first heating chamber 212. The gas passes through the one-way valve 214 to enter the first heating chamber 212 from the first cavity 213. cavity 212; gas flows out from the air flow channel 211c to impact on the vibration part 220, so that the vibration part 220 vibrates to drive the vibration plate 140 to vibrate; wherein, the air flow channel 211c can be set with only two air flow channels 211c, and the two air flow channels 211c are arranged at intervals from each other, so that when the gas flows out from the two air flow channels 211c, it will impact on two different positions of the vibration part 220. Of course, the air flow channel 211c is not limited to being set to two, and can also be set to three air flow channels 211c or four air flow channels 211c, so that when the gas flows out from the air flow channel 211c, it will impact on three different positions or four different positions of the vibration part 220, so that the vibration part 220 is more likely to vibrate to drive the vibration plate 140 to vibrate. Designers can select and design the number of air flow channels 211c in the air flow guide 211 according to actual needs, and there is no limitation here.

[0034] When performing mass transfer and installation of the lamp beads 150, the circuit board 120 is first started. The heat generated by the circuit board 120 is conducted to the air circulation part 210 through the heat conducting component 130, and the gas in the first heating chamber 212 is heated. The gas in the first heating chamber 212 expands after being heated, and the heated and expanded gas enters the air flow guide 211 from the air inlet end 211a of the air flow guide 211, and then enters the first cavity 213 from the air outlet end 211b. In this process, the gas in the air flow guide 211 will drive the air flow paddle 211d to swing in the air flow guide 211, so that the gas in the air flow guide 211 will alternately flow out from the two air flow channels 211c with the swing of the air flow paddle 211d, that is, flow out from the air outlet end 211b to enter the first cavity 213, and the gas flowing out from the air flow channel 211c will impact on two different positions of the vibration part 220. The vibration part 220 vibrates due to the impact at different positions, so as to drive the vibration plate 140 to vibrate, and the gas will also enter the first cavity 213. As more and more gas enters the first cavity 213, the gas in the first cavity 213 will squeeze the one-way valve 214 to open it, so that the gas in the first cavity 213 enters the first heating chamber 212 from the one-way valve 214, and then the gas is heated again by the heat conducted by the heat-conducting component 130, so as to repeat the above steps to realize airflow circulation, so that the vibration part 220 and the vibration plate 140 continuously vibrate when the circuit board 120 is working, and the lamp bead 150 located on the vibration plate 140 vibrates to move to complete the installation of the lamp bead 150; that is, only by keeping the circuit board 120 powered on, the vibration plate 140 can continuously vibrate, so that the lamp bead 150 can vibrate to move to complete the installation of the lamp bead 150.

[0035] Considering that after the lamp bead 150 is installed and the circuit board 120 stops being powered, the gas in the first heating chamber 212 is still in an expanded state after being heated. At this time, the vibration part 220 and the vibration plate 140 are not easy to return to the initial position when not vibrating. In order to enable the vibration part 220 and the vibration plate 140 to quickly return to the initial position, the vibration assembly 200 also includes a reset part 240, and the reset part 240 is arranged on the heat-conducting assembly 130. The reset part 240 includes a fixing part 241 and an elastic part 242. The fixing part 241 is arranged on the heat-conducting assembly 130, and one end of the elastic part 242 is connected to the fixing part 241, and the other end is connected to the fixing part 241. One end is connected to the vibration part 220. When the vibration part 220 stops vibrating, the vibration part 220 moves toward the direction of the bottom plate 110 under the elastic force of the elastic member 242. In the present embodiment, the elastic member 242 is a tension spring. When the vibration part 220 is vibrating, the elastic member 242 is elastically deformed to be stretched. At this time, the elastic member 242 is in an elastic energy storage state. When the vibration part 220 stops vibrating, the elastic member 242 is in an elastic potential energy state. The vibration part 220 moves toward the direction of the bottom plate 110 under the elastic force of the elastic member 242, so that the vibration part 220 returns to its initial position. Figure 2 As shown, the fixing member 241, the airflow guide member 211 and the heat-conducting component 130 are enclosed to form a first heating chamber 212, and the fixing member 241 and the airflow guide member 211 isolate the first heating chamber 212 and the first cavity 213. The setting of the fixing member 241 can further reduce the size of the first heating chamber 212, so that the gas in the first heating chamber 212 can be heated faster to produce expansion.

[0036] However, when the vibration part 220 drives the vibration plate 140 to vibrate, a gap will be generated between the vibration part 220 and the heat-conducting component 130 due to the vibration of the vibration part 220, and the gas in the first cavity 213 will overflow from the gap. In order to seal the gap, the vibration component 200 also includes an elastic blocking member 250, one end of which is connected to the vibration part 220, and the other end is connected to the heat-conducting component 130. When the vibration part 220 vibrates, the elastic blocking member 250 will produce elastic deformation with the vibration of the vibration part 220 to seal the gap between the vibration part 220 and the heat-conducting component 130, and when the vibration part 220 stops vibrating, the elastic blocking member 250 will return to its initial state with the movement of the vibration part 220; in the present embodiment, the elastic blocking member 250 may be an elastic rubber, and the elastic rubber may be a high-temperature resistant elastic rubber, for example, it may be nitrile butadiene rubber (NBR).

[0037] In the present embodiment, in order to enable the vibration part 220 to drive the vibration plate 140 to vibrate well, a positioning groove 221 is provided on the vibration part 220, and the positioning groove 221 cooperates with the vibration plate 140. The cross-section of the positioning groove 221 in the direction perpendicular to the bottom plate 110 is C-shaped. The positioning groove 221 clamps the vibration plate 140 on the vibration part 220, and the positioning groove 221 surrounds the three surfaces of the vibration plate 140, so that when the vibration plate 140 vibrates together with the vibration part 220, the vibration plate 140 is not easy to separate from the vibration part 220; it should be noted that the positioning groove 221 is not limited to the C-shaped groove, and the positioning groove 221 can be set to a groove of other shapes. The designer only needs to satisfy the requirement that the vibration plate 140 can be driven to vibrate well. It is sufficient that it is not easy to separate when vibrating together with the vibration plate 140, and there is no restriction here; and in order to enable the vibration part 220 and the vibration plate 140 to move in a fixed direction when vibrating, the limiting member 230 is provided with a limiting groove 231, and the vibration part 220 is provided with a slider 222 corresponding to the limiting groove 231, and the slider 222 is slidably arranged with the limiting groove 231. When the vibration part 220 vibrates, the slider 222 slides in the limiting groove 231 to limit the moving direction of the vibration part 220, so that the vibration part 220 and the vibration plate 140 can only reciprocate along the extension direction of the limiting groove 231 to achieve vibration, wherein the extension direction of the limiting groove 231 is as follows Figure 1 The Y-axis direction is shown as the direction away from the base plate 110 .

[0038] In addition, in order to enable the heat conducting component 130 to better conduct the heat generated by the circuit board 120 when it is working, the inventors also designed the heat conducting component 130, such as Figure 6 As shown, the heat-conducting component 130 includes a heat-conducting outer frame 131 arranged in the peripheral area and a heat-conducting inner frame 132 arranged in the middle area, a gap is provided between the heat-conducting outer frame 131 and the heat-conducting inner frame 132, the circuit board 120 is arranged in the gap, and the heat conductivity rate of the heat-conducting inner frame 132 is greater than the heat conductivity rate of the heat-conducting outer frame 131, so that the heat of the circuit board 120 during operation can be quickly transferred to the first heating chamber 212 through the heat-conducting inner frame 132 and the heat-conducting outer frame 131 to heat the gas in the first heating chamber 212; in addition, the heat conductivity rates of the heat-conducting inner frame 132 and the heat-conducting outer frame 131 can be arranged to decrease in layers in sequence along the direction from the center of the lamp board 100 to the periphery of the lamp board 100, so that the heat generated by the circuit board 120 during operation can be gathered at a position close to the first heating chamber 212 through the heat-conducting inner frame 132 and the heat-conducting outer frame 131.

[0039] During the installation of the lamp beads 150, only the pins 152 of the lamp beads 150 are matched with the through holes 143 on the vibration plate 140, and it takes a long time to move all the lamp beads 150 to complete the installation. In order to speed up the time required for the installation of the lamp beads 150 and facilitate the positioning of the lamp beads 150 during installation, in this embodiment, the vibration plate 140 is provided with a plurality of installation positions 141, each of the installation positions 141 is correspondingly provided with a first positioning block 142, and the lamp beads 150 are provided with a second positioning block 151. When the lamp beads 150 are installed on the installation positions 141, the first positioning block 142 cooperates with the second positioning block 151. The first positioning block 142 and the second positioning block 151 are magnetically matched. During the installation of the lamp beads 150, the second positioning block 151 on the lamp beads 150 and the vibration plate 143 are magnetically matched. The first positioning block 142 on the moving plate 140 is magnetically engaged to assist the installation of the lamp bead 150 so that the lamp bead 150 is fixed on the vibration plate 140, and the installed lamp bead 150 will not continue to move with the vibration of the vibration plate 140 under the action of the magnetic engagement of the first positioning block 142 and the second positioning block 151, so that multiple lamp beads 150 can be gradually installed; it should be noted that the first positioning block 142 and the second positioning block 151 can be electromagnets, the first positioning block 142 can be an N pole, the second positioning block 151 can be an S pole, or the magnetic poles of the first positioning block 142 and the second positioning block 151 can also be opposite, as long as the first positioning block 142 and the second positioning block 151 can achieve magnetic engagement, there is no restriction here, and designers can choose to design according to actual needs.

[0040] like Figure 1 As shown, the lamp board 100 also includes an insulating plate 500, which is arranged between the base plate 110 and the circuit board 120. The insulating plate 500 is used to isolate the circuit board 120 from the base plate 110 to prevent leakage of the circuit board 120 and other conditions from affecting the base plate 110; wherein, the insulating plate 500 can be designed to be heat-insulating, so that heat can be concentrated and released from both sides of the insulating plate 500 without entering the base plate 110; and if the heat generation of the lamp board 100 itself is relatively large, the insulating plate 500 may not be designed to be heat-insulating, so that heat can be conducted to the base plate 110 through the insulating plate 500 to assist in heat dissipation, and designers can choose to design whether the insulating plate 500 is heat-insulating according to actual conditions.

[0041] In order to prevent the lamp bead 150 from jumping out of the range of the lamp board 100 due to the high vibration frequency of the lamp bead 150 when vibrating on the vibration plate 140, resulting in the failure of the installation of the lamp bead 150, the inventors designed a blocking component 300 on the lamp board 100 to block the lamp bead 150. Figure 1 and Figure 2As shown, the lamp board 100 also includes a blocking component 300 and a second cavity 400, and the blocking component 300 is arranged above the base plate 110, and the blocking component 300, the limiting member 230, the base plate 110 and the heat-conducting component 130 enclose the second cavity 400; the heat-conducting component 130 transfers heat to the second cavity 400 to heat the gas in the second cavity 400, so that the gas in the second cavity 400 expands to lift the blocking component 300, thereby preventing the lamp bead 150 from jumping out of the range of the lamp board 100 due to the vibration frequency when vibrating on the vibration plate 140, resulting in a situation where the installation of the lamp bead 150 fails. A support member 410 is further provided in the second cavity 400 , one end of the support member 410 abuts against the bottom plate 110 , and the other end abuts against the blocking assembly 300 , so as to support the blocking assembly 300 when the gas in the second cavity 400 is not expanded by heat, wherein the support member 410 is arranged away from the heat conductive assembly 130 .

[0042] The blocking assembly 300 includes a blocking member 310 and a second reset member 320. The blocking member 310 includes a sealing portion 311 and a blocking portion 312. The sealing portion 311 is arranged close to the bottom plate 110. The sealing portion 311, the limiting member 230, the bottom plate 110 and the heat conducting assembly 130 enclose the second cavity 400. The blocking portion 312 is arranged on a side of the sealing portion 311 away from the bottom plate 110. The blocking portion 312 and the limiting member 230 can be fitted together. The limiting member 230 is provided with a protrusion 232. One end of the second reset member 320 abuts against the protrusion 232, and the other end abuts against the sealing portion 311. When the gas in the second cavity 400 expands to lift the blocking assembly 300, the sealing portion 311 moves in a direction away from the bottom plate 110. The second reset member 320 is moved to compress and store energy, and when the gas in the second cavity 400 stops expanding, the elastic potential energy of the second reset member 320 is used to move the sealing portion 311 toward the direction of the bottom plate 110, so as to facilitate the blocking member 310 to restore to its initial state; wherein, the blocking portion 312 includes a connecting portion 312a and an adhesive portion 312b, and the connecting portion 312a and the adhesive portion 312b are arranged perpendicular to each other, and the adhesive portion 312b is provided with an adhesive 313. After the lamp beads 150 on the lamp board 100 are installed, the adhesive 313 is bonded to the limiting member 230 to fit the adhesive portion 312b and the limiting member 230, so as to prevent the gas in the second cavity 400 from expanding due to the heat and continuing to lift up the blocking assembly 300 when the circuit board 120 generates heat during subsequent operation.

[0043] In the lamp panel 100 of this embodiment, when transferring and installing a large number of lamp beads 150, the lamp beads 150 are first randomly spread on the vibration plate 140. Figure 3 As shown, the circuit board 120 is powered on. When powered on, the circuit board 120 generates heat during operation. The heat is conducted to the air circulation part 210 of the vibration component 200 along with the heat conducting component 130, and the gas in the air circulation part 210 is heated to form an air circulation, so that the air circulation part 210 generates an air flow pulse force due to the gas flow, so as to impact the vibration part 220 located above the air circulation part 210. The vibration part 220 impacted by the air flow vibrates to drive the vibration plate 140 to vibrate, so that the lamp beads 150 located on the vibration plate 140 vibrate to realize the movement of the lamp beads 150, so that the lamp beads 150 are gradually installed on the vibration plate 140 during the movement. At the same time, the heat generated by the circuit board 120 during operation is conducted to the heat conducting component 130 along with the heat conducting component 130. In the second cavity 400, the gas in the second cavity 400 is heated to expand the gas, and the blocking assembly 300 is lifted up to prevent the lamp bead 150 from vibrating on the vibration plate 140 and jumping out of the range of the lamp board 100 due to the vibration frequency, thereby causing the lamp bead 150 to fail to be installed. When the lamp bead 150 is installed, the circuit board 120 stops energizing, and under the elastic force of the reset part 240 and the second reset part 320, the blocking part 310, the vibration part 220 and the vibration plate 140 will move toward the bottom plate 110, that is, return to the initial state, so as to facilitate the next installation process, that is, to install the glass substrate 600 above the blocking part 310 and the lamp bead 150 to press the blocking part 310 and the lamp bead 150 tightly. After the installation, the lamp board 100 is as shown in FIG. Figure 4 As shown. Compared with the existing solution that requires a mechanical structure to transfer the lamp beads 150, the lamp board 100 of this embodiment can realize the mass transfer installation of the lamp beads 150 only by using the internal structure of the lamp board 100, realize the vibration installation of the lamp beads 150 by the vibration component 200 inside the lamp board 100, and prevent the lamp beads 150 from jumping out of the range of the lamp board 100 when vibrating by the blocking component 300 inside the lamp board 100. The combination of the two can realize the mass transfer installation of the lamp beads 150, and no additional mass transfer equipment is required to realize the installation of the lamp beads 150, which reduces the production cost of MiniLED display products to a certain extent.

[0044] like Figure 7As shown, as the second embodiment of the present application, a display device 900 is disclosed, the display device 900 includes a driving circuit 800 and a display panel 700, the display panel 700 includes the lamp board 100 as described in the above embodiment, and the driving circuit 800 drives the display panel 700. The display device of this embodiment, by arranging a heat conducting component, a vibration component and a vibration plate on the lamp board, utilizes the heat generated by the circuit board of the lamp board itself when working, and the heat conducting component conducts the heat to the vibration component so that the vibration component generates airflow pulse force to drive the vibration plate to vibrate, so that the lamp beads can be vibrated to achieve movement to complete the installation of the lamp beads on the lamp board. Compared with the existing solution that requires the lamp beads to be transferred by a mechanical structure, the mass transfer installation of the lamp beads can be achieved by using only the internal structure of the lamp board, and no additional mass transfer equipment is required to achieve the installation of the lamp beads, which reduces the production cost of MiniLED display products to a certain extent.

[0045] It should be noted that the limitations on the various steps involved in this solution, without affecting the implementation of the specific solution, are not deemed to limit the order of the steps. The steps written in front can be executed first, or later, or even simultaneously. As long as this solution can be implemented, it should be deemed to fall within the scope of protection of this application.

[0046] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0047] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. A light board, applied to a display panel, characterized in that: The light board comprises: Base plate; A circuit board, arranged on the bottom plate; A heat-conducting component, disposed on the bottom plate and surrounding the circuit board; A vibration plate is arranged on the heat-conducting component, a plurality of through holes are arranged on the vibration plate, a plurality of mounting positions are arranged on the vibration plate, and a first positioning block is correspondingly arranged at each mounting position; The vibration component comprises an airflow circulation part, a vibration part and a limiter, wherein the airflow circulation part is arranged on the heat-conducting component, the vibration part is arranged on a side of the airflow circulation part away from the bottom plate, the limiter is arranged on the heat-conducting component, one end of the vibration part is connected to the vibration plate, and the other end is abutted against the limiter, the limiter, the vibration part and the heat-conducting component enclose the airflow circulation part, the airflow circulation part comprises an airflow guide, a first heating chamber, a first cavity and a one-way valve, and the airflow guide comprises a an air inlet end, an air outlet end close to the vibrating portion, an air flow paddle, and at least two air flow channels connecting the air inlet end and the air outlet end, the first heating chamber is arranged on the air inlet end of the air flow guide, the first cavity is arranged on the air outlet end of the air flow guide, the air flow paddle swings in the air flow guide so that the gas flows out from the two air flow channels alternately into the first cavity, the one-way valve connects the first cavity and the first heating chamber, and the gas passes through the one-way valve to enter the first heating chamber from the first cavity; and A plurality of lamp beads, each of which is provided with a pin, and when the lamp bead is mounted on the vibration plate, the pin passes through the through hole and is electrically connected to the circuit board, and the lamp bead is also provided with a second positioning block, and the first positioning block and the second positioning block are magnetically matched; The heat conducting component conducts the heat generated by the circuit board when it is working to the air circulation part of the vibration component. After the air circulation part absorbs the heat, it generates an air flow pulse force to impact the vibration part to make it vibrate, thereby driving the vibration plate to vibrate, thereby driving the lamp bead to vibrate on the vibration plate; Wherein, the airflow flows out from the airflow channel to impact the vibration part, so that the vibration part vibrates to drive the vibration plate to vibrate; Among them, during the installation process of the lamp bead, the second positioning block on the lamp bead is magnetically matched with the first positioning block on the vibration plate to assist the installation of the lamp bead so that the lamp bead is fixed on the vibration plate. The installed lamp bead will not continue to move with the vibration of the vibration plate under the action of the magnetic cooperation between the first positioning block and the second positioning block.

2. The light board according to claim 1, characterized in that: The vibration component further includes a reset part, which is arranged on the heat-conducting component. The reset part includes a fixing member and an elastic member, which is arranged on the heat-conducting component. One end of the elastic member is connected to the fixing member, and the other end is connected to the vibration part. When the vibration part stops vibrating, the vibration part moves toward the bottom plate under the elastic force of the elastic member.

3. The light board according to claim 1, characterized in that: The vibration component further comprises an elastic blocking member, one end of which is connected to the vibration part, and the other end of which is connected to the heat conduction component; Wherein, when the vibration part vibrates, the elastic blocking member is deformed along with the vibration of the vibration part.

4. The light board according to claim 1, characterized in that: The vibration part is provided with a positioning groove, and the positioning groove matches with the vibration plate; Wherein, the cross section of the positioning groove in a direction perpendicular to the bottom plate is C-shaped.

5. The light board according to claim 1, characterized in that: The heat-conducting assembly comprises a heat-conducting outer frame arranged in the peripheral area and a heat-conducting inner frame arranged in the middle area, a gap is arranged between the heat-conducting outer frame and the heat-conducting inner frame, and the circuit board is arranged in the gap; Wherein, the thermal conductivity rate of the thermally conductive inner frame is greater than the thermal conductivity rate of the thermally conductive outer frame.

6. The light board according to claim 1, characterized in that: It also includes a blocking component and a second cavity, wherein the blocking component is arranged above the bottom plate, and the blocking component, the limiting member, the bottom plate and the heat conducting component enclose the second cavity; The heat conducting component transfers heat to the second cavity to lift up the blocking component.

7. The light board according to claim 1, characterized in that: An insulating plate is also included, and the insulating plate is disposed between the bottom plate and the circuit board.

8. A display device, characterized in that: It comprises a driving circuit and a display panel, wherein the display panel comprises the light board according to any one of claims 1 to 7, and the driving circuit drives the display panel.

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