Dimming control device of light emitting diode lamp panel and control method thereof

Abstract

The invention provides a dimming control device of a light emitting diode lamp panel and a control method thereof. The dimming control device of the light-emitting diode lamp panel comprises the light-emitting diode lamp panel with a plurality of light-emitting diode units, and each light-emitting diode unit receives a switching signal and a pulse dimming control signal. The micro-control unit receives input data to calculate a dimming signal corresponding to each light-emitting diode unit and transmits the dimming signal to the multi-channel control unit so as to provide a corresponding pulse dimming control signal and a switching signal to the light-emitting diode lamp panel. The power supply provides driving power to the light emitting diode lamp panel, and each light emitting diode unit is a high-power light emitting diode unit. The invention also provides a control method for independently controlling the brightness of each light-emitting diode unit and improving the reliability of curing packaging.

Description

Technical Field

[0001] The invention relates to the field of lighting, and in particular to a dimming control device for a light emitting diode lamp panel for curing packaging, and a control method. Background Art

[0002] The use of light to cure the encapsulation glue is a known technology that has been widely used in the fields of nail art or display packaging. The current display packaging method is to apply a circle of encapsulation glue outside the display effective area. As the display is getting bigger and bigger, it is usually necessary to assemble multiple lamps to illuminate the display to cover the encapsulation glue coating area. However, this practice not only wastes energy (only the encapsulation glue coating area needs to be illuminated, and the display effective area does not need to be illuminated), but also because the lamp has only a two-stage switch of ON and OFF, it is impossible to adjust the brightness of a single lamp. When the degree of decay of each lamp is different, there may be a risk of uneven or incomplete curing.

[0003] Furthermore, the existing lamps cannot adjust their lighting range to suit the different sizes of display packages, making the customization of display products inflexible. And as displays become larger and larger, it is difficult for the lamp module to handle the high power of nearly 10,000 watts to provide the curing package function.

[0004] In view of the many deficiencies and imperfections of existing lamp tube curing devices, the inventors have conceived and proposed a dimming control device for an LED light board (LED light board) and a control method for the dimming control device for an LED light board. The power of each LED unit can be individually adjusted by the dimming control device of the LED light board, wherein each LED unit is a high-power LED unit. It is expected that a more excellent and convenient curing packaging solution can be provided, and high-power and large-area display device packaging can be provided under low driving voltage conditions. Summary of the invention

[0005] The main purpose of the present invention is to provide a dimming control device for an LED light board, comprising: an LED light board, a micro control unit, a multi-channel control unit and a power supply; wherein the LED light board comprises an LED module arranged in an M*N matrix, M and N are both greater than 1, each LED module comprises a plurality of LED units, these LED units are high-power LED units, and each LED unit receives a switch control signal and a pulse dimming control signal and is individually controlled; the micro control unit receives input data to calculate a dimming signal corresponding to each LED unit; the multi-channel control unit is connected to the micro control unit to receive the dimming signal, and provides the corresponding pulse dimming control signal and switch control signal to the LED light board according to the address of each LED unit; the power supply is connected to the LED light board to provide a driving power to the LED light board. When the LED light board is used as a curing device, the brightness of each LED unit can be individually adjusted to light up only the LED unit corresponding to the encapsulation glue curing area, and turn off other LED units corresponding to the display effective area, so as to achieve the effect of saving energy.

[0006] Another object of the present invention is to provide a control method for a dimming control device of an LED light panel, comprising: providing a dimming control device of an LED light panel, comprising: an LED light panel, a micro control unit, a multi-channel control unit and a power supply; wherein the LED light panel comprises an LED module arranged in an M*N matrix, M and N are both greater than 1, each LED module comprises a plurality of LED units, each LED unit is a high-power LED unit, and each LED unit receives a switch control signal and a pulse dimming control signal and is controlled individually; the LED light panel is connected to the power supply and the multi-channel control unit, and the micro control unit is connected to the multi-channel control unit; receiving input data from a user interface to the micro control unit to calculate a dimming signal corresponding to each LED unit; transmitting a dimming signal to the multi-channel control unit to provide a corresponding pulse dimming control signal and a switch control signal to the LED light panel; providing driving power to the LED light panel. Accordingly, an operator can set the dimming brightness of each LED unit on the user interface.

[0007] Based on the control method of the dimming control device of the above-mentioned LED light board, a dimming parameter input field and an LED light board pattern are provided on the user interface. The LED light board pattern includes multiple grid points, each grid point corresponds to each LED unit, and each grid point receives the dimming parameters from the dimming parameter field to form input data.

[0008] Based on the control method of the dimming control device of the LED light board mentioned above, the dimming control device of the LED light board further includes a display device, and a closed-shaped packaging glue is arranged on the display device, and the packaging glue receives the light emitted by the LED light board and is solidified.

[0009] Based on the control method of the dimming control device of the light emitting diode lamp panel, the display device includes a plurality of sub-areas, and a plurality of encapsulation glues of closed shapes are respectively arranged in the sub-areas.

[0010] Based on the above embodiments, optionally, the light emitting diode unit is an ultraviolet light emitting diode unit.

[0011] Based on the above embodiment, optionally, the LED light board includes a first area and a second area, the first area surrounds the second area, and the position of the first area corresponds to the position of the packaging glue, and the pulse dimming control signal received by each LED unit in the first area is greater than the pulse dimming control signal received by each LED unit in the second area. Accordingly, since the brightness emitted by the first area is higher than the brightness of the second area, the brightness of the second area can also be zero if necessary. The above method can only cure the packaging glue coating area to save energy.

[0012] Based on the foregoing embodiments, optionally, the multi-channel control unit includes a dimming unit, an isolation conversion unit and a switch control unit connected in series in sequence, the dimming unit outputs a first signal to the isolation conversion unit, the isolation conversion unit provides a pulse dimming control signal to the light-emitting diode light board, and the isolation conversion unit provides a second signal to the switch control unit, and the switch control unit provides a switch control signal to the light-emitting diode light board.

[0013] Based on the aforementioned embodiment, optionally, a detection unit is further included, which is connected to the LED light board to detect parameters of the LED light board and provide the parameters to the micro control unit, so that the micro control unit can receive feedback and adjust the LED unit individually.

[0014] Based on the above embodiment, optionally, an external logic control unit is further included, and the external logic control unit is connected to the micro control unit to receive a dimming signal.

[0015] Based on the above embodiment, optionally, a memory unit is further included, and the memory unit is connected to the micro control unit to store the dimming signal.

[0016] Based on the above embodiment, optionally, it further includes a plurality of heat dissipation units, each heat dissipation unit being arranged corresponding to a plurality of light emitting diode light panels.

[0017] Based on the above-mentioned embodiment, optionally, the driving voltage of each LED unit is less than or equal to 12 volts, so that the LED light board does not need to operate at a high voltage but can maintain a high power.

[0018] Based on the above embodiment, optionally, the wavelength range of the light emitting diode unit is between 305 and 405 nanometers.

[0019] Based on the above-mentioned embodiment, optionally, the dimming control device of the light emitting diode light panel is applied to the purpose of curing packaging.

[0020] In summary, the dimming control device of the LED light board of the present invention can light up only the LED unit corresponding to the packaging glue curing area and turn off other LED units corresponding to the display effective area by individually adjusting each LED unit, so as to achieve the effect of saving energy. Therefore, the point / line / surface lighting area design can be achieved according to the user's needs, and the packaging of high-power large-area display devices can be provided at a low driving voltage. At the same time, according to the control method of the dimming control device of the LED light board of the present invention, the operator can use the LED light board graphic corresponding to the position of the LED unit on the LED light board on the user interface to individually set the dimming brightness of each high-power LED unit, so as to perform curing and packaging for specific areas of the display device, thereby improving the reliability of curing and packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a block diagram of a dimming control device and a control method of a light emitting diode lamp panel according to a first embodiment of the present invention.

[0022] Figure 2 FIG. 4 is a circuit diagram of a light emitting diode lamp panel according to a first embodiment of the present invention.

[0023] Figure 3 FIG. 1 is a schematic diagram of a light emitting diode module according to a first embodiment of the present invention.

[0024] Figure 4 Schematic diagram of a heat dissipation module of a light emitting diode lamp panel according to a first embodiment of the present invention.

[0025] Figure 5 Schematic diagram of the user interface of the control method of the present invention.

[0026] Fig. 6A FIG. 2 is a schematic diagram of a light emitting diode lamp panel and a display device according to a second embodiment of the present invention.

[0027] Figure 6B FIG. 4 is a schematic diagram of a light emitting diode lamp panel according to a third embodiment of the present invention.

[0028] Figure 6CFIG. 4 is a schematic diagram of a light emitting diode lamp panel according to a fourth embodiment of the present invention.

[0029] Fig.6D FIG. 5 is a schematic diagram of a light emitting diode lamp panel according to a fifth embodiment of the present invention.

[0030] Fig. 6E FIG. 4 is a schematic diagram of a light emitting diode lamp panel according to a sixth embodiment of the present invention.

[0031] Figure 7 It is a flow block diagram of the control method of the present invention.

[0032] Description of Reference Numerals

[0033] 100: Dimming control device for light emitting diode light panel

[0034] 110: LED light board 111: LED module

[0035] 1111: First District 1112: Second District

[0036] 112: Light emitting diode unit 120: Micro control unit

[0037] 121: LED 122: Siren

[0038] 130: Multi-channel control unit 131: Dimming unit

[0039] 132: Isolation conversion unit 133: Switch control unit

[0040] 140: Power supply 150: Detection unit

[0041] 160: External logic control unit 170: Memory unit

[0042] 180: Synchronous signal unit 190: Heat dissipation module

[0043] 191: Cooling unit 192: Cooling machine

[0044] 193: First flow channel 194: Second flow channel

[0045] 195: Electric drive unit 200: User interface

[0046] 210: LED light board graphics 220: Parameter input field

[0047] 230: Status display field 240: Action key

[0048] 221: User field 222: Dimming parameter input field

[0049] 223: Irradiation time input field 224: Light board status field

[0050] 225: Information field 226: Temperature field

[0051] 227: Irradiation mode column 2271: Area mode

[0052] 2272: Border mode 241: Start key

[0053] 242: Stop button 300: Display device

[0054] 310: Sub-area 311: Packaging glue coating area

[0055] 312: Display effective area 320: Packaging glue

[0056] 701, 702, 703, 704: bright spots S1: input data

[0057] S2: dimming signal S21: first signal

[0058] S22: second signal S3: pulse dimming control signal

[0059] S4: switch control signal S5: parameter signal

[0060] S8: Oscillation frequency signal ST1-ST5: Steps

[0061] SW1: switch CS1: voltage source

[0062] T1: Detector T2: Detector

[0063] P1: Driving power DETAILED DESCRIPTION

[0064] It should be understood that when a component is referred to as being "connected" or "disposed" on another component, it can mean that the component is directly located on the other component, or there may be an intermediate component through which the component and the other component are connected. Conversely, when a component is referred to as being "directly on another component" or "directly connected to another component", it can be understood that it is clearly defined that there are no intermediate components.

[0065] In addition, the terms "first", "second", and "third" are only used to distinguish one component, part, region, or part from another component, part, region, layer, or part, rather than to indicate a necessary order of precedence. In addition, relative terms such as "lower" and "upper" may be used herein to describe the relationship between one component and another component, and it should be understood that the relative terms are intended to include different orientations of the device in addition to the orientation shown in the figure. For example, if a device in a figure is flipped, the components described as being on the "lower" side of other components will be oriented on the "upper" side of the other components. This only indicates a relative orientation relationship, not an absolute orientation relationship.

[0066] Figure 1 It is a block diagram of a dimming control device and a control method of a light emitting diode lamp panel according to the first embodiment. Figure 2 FIG. 4 is a circuit diagram of the light emitting diode lamp board of the first embodiment. Figure 3 FIG. 1 is a schematic diagram of a light emitting diode module according to a first embodiment. Figure 4 This is a schematic diagram of the heat dissipation device of the light emitting diode lamp panel of the first embodiment of the present invention. Figure 1 , the dimming control device 100 of the LED light board of the present embodiment includes an LED light board 110, a micro control unit 120, a multi-channel control unit 130 and a power supply 140. The LED light board 110 includes LED modules 111 arranged in an M*N matrix, where M and N are both greater than 1. In the first embodiment, the LED modules 111 are arranged in a 4*2 matrix, but the present invention is not limited thereto, and adjacent LED modules 111 are connected to each other. Each LED module 111 includes a plurality of LED units 112. Each LED unit 112 is a high-power LED unit (high powered LED), and each LED unit 112 receives a corresponding switch control signal S4 and a pulse dimming control signal S3 to control its brightness. The following will describe the process of transmitting the signal to the LED light board 110.

[0067] The multi-channel control unit 130 is a multi-tasking module, which includes a dimming unit 131, an isolation conversion unit 132 and a switch control unit 133 connected in series in sequence. The dimming unit 131 outputs a first signal S21 to the isolation conversion unit 132. The isolation conversion unit 132 can be used to isolate the circuit between the light-emitting diode light board 110. After receiving the first signal S21, the isolation conversion unit 132 decides whether to provide a pulse dimming control signal S3 to the light-emitting diode light board 110, and the isolation conversion unit 132 provides a second signal S22 to the switch control unit 133. The switch control unit 133 provides a switch control signal S4 to the light-emitting diode light board 110.

[0068] Please also refer to Figure 1 and Figure 2 , Figure 2 FIG. 1 is a circuit diagram of the LED light board 110 of this embodiment. The power driving unit 195 can generate a PWM signal corresponding to each LED unit 112. Figure 2 The LED light board 110 includes LED modules 111 arranged in a 2*2 matrix, and each LED module 111 includes LED units 112 arranged in a 3*4 matrix. Figure 2 The LED light board 110 has a total of 48 LED units 112, each of which has a corresponding number or address. Figure 1 After the power driving unit 195 of the LED light board 110 receives the pulse dimming control signal S3 and the switch control signal S4, the power driving unit 195 determines the lighting power of each LED unit 112. Taking one of the LED units 112 as an example, one end of the LED unit 112 is connected to the switch SW1, and the other end is connected to the voltage source. The switch control signal S4 controls the on or off of the LED unit 112 via the switch SW1. After the power driving unit 195 receives the pulse dimming control signal S3, it determines the power of the LED unit 112, thereby determining the brightness of the LED unit 112. In more detail, the power driving unit 195 determines how much power the power supply 140 should provide to the corresponding LED unit 112. The driving voltage value received by each LED unit 112 is less than or equal to 12V, which can achieve the effect of the present invention of packaging a high-power large-area display device under the condition of low driving voltage. In other embodiments, more preferably, the driving voltage value of each LED unit 112 is less than or equal to 5V. It should be noted that in order to simplify the diagram, Figure 1 The power drive unit 195 is only schematically shown to be connected to four groups of LED modules 111. In fact, the power drive unit 195 is connected to each group of LED modules 111, so the power provided to each LED unit 112 can be determined. However, the present invention does not limit the number and corresponding relationship of the power drive unit 195 and the LED module 111. It can be one-to-many, or one group of LED modules 111 can be corresponding to one group of power drive units 195.

[0069] Please also refer to Figure 1 and Figure 3The dimming control device 100 of the LED light board of the present embodiment may further include a detection unit 150, an external logic control unit 160, a memory unit 170 and a synchronization signal unit 180. The detection unit 150 is connected to the LED light board 110, detects the parameter signal S5 of the LED light board 110, and provides the parameter signal S5 to the micro control unit 120, so that the micro control unit 120 can receive feedback of the parameter signal, and then adjust the LED unit 112 separately, thereby improving the reliability of the dimming control device 100 of the LED light board. Figure 3 As shown, Figure 3 Schematic diagram of the LED module 111 of this embodiment. The detection units 150 in the figure are detectors T1 and T2 respectively disposed on the LED module 111, which can detect the temperature of different positions of the LED module 111 and feed back to the micro control unit 120. This embodiment is not limited to detecting temperature, but can also detect parameters such as brightness and power. In addition, this embodiment does not limit the number of detectors, and the detectors can also detect parameters of a single or multiple LED units 112.

[0070] The external logic control unit 160 of this embodiment is connected to the micro control unit 120 for receiving the dimming signal S2. The external logic control unit 160 can be used for data transmission or collection between the dimming control device 100 of the LED light board and the external device. The external logic control unit 160 is located in the external device. Taking the present invention as an example, the external device can be a working machine carrying a display device. The micro control unit 120 provides the dimming signal information of the LED light board 100 to the external logic control unit 160 of the working machine, which can be used for process adjustment or alignment. The memory unit 170 of this embodiment is connected to the micro control unit 120 to store the dimming signal S2. The memory unit 170 can store multiple groups of different dimming signals S2. Therefore, even if the production line has different sizes, the multiple groups of dimming signal information S2 stored in the memory unit 170 can be used for production. It should be noted that the memory unit 170 in this embodiment is set in an external device to store the dimming signal S2. Because the content is large and the capacity required is large, a parameter memory unit (not shown) can also be set in the LED light board 110 to record relevant equipment parameters, such as fan speed. The synchronization signal unit 180 of this embodiment is connected to the micro control unit 120 and the multi-channel control unit 130. When the micro control unit 120 transmits the dimming signal S2 to the multi-channel control unit 130, it also provides a synchronization signal to the synchronization signal unit 180. After receiving the synchronization signal, the synchronization signal unit 180 outputs a high-frequency oscillation frequency signal S8 to the multi-channel control unit 130 to drive the multi-channel control unit 130 to operate. In other embodiments, the synchronization signal unit 180 can also be driven by an external device to output a high-frequency oscillation frequency signal S8 to the multi-channel control unit 130 to drive the multi-channel control unit 130 to operate, so the synchronization signal unit 180 does not need to be connected to the micro control unit 120. In another embodiment, the micro control unit 120 may also be connected to an LED 121 and a buzzer 122 to inform the micro control unit 120 of its working status.

[0071] The dimming control device 100 of the light emitting diode lamp panel of the present embodiment may include a heat dissipation module 190. Figure 4Schematic diagram of the heat dissipation module 190. The heat dissipation module 190 includes a plurality of heat dissipation units 191, a cooling machine 192, a first flow channel 193, and a second flow channel 194. The heat dissipation unit 191 may be a water-cooled plate, and each heat dissipation unit 191 is provided corresponding to a plurality of LED light boards 110. For example, one heat dissipation unit 191 is provided corresponding to three LED light boards 110. The heat dissipation unit 191 is connected to the cooling machine 194 through the first flow channel 193 and the second flow channel 194 for heat exchange. Specifically, the heat dissipation unit 191 conducts the absorbed heat energy to the cooling machine 192 through the liquid in the first flow channel 193, and the cooling machine conducts the liquid with a lower temperature to the heat dissipation unit 191 through the second flow channel 194 for heat exchange, thereby effectively reducing the temperature of the LED light board 110.

[0072] In summary, the dimming control device 100 of the LED light board of the present invention can adjust each LED unit individually, and the LED light board of the present invention is used as a packaging glue curing device, so the LED units are high-power LED units. When the packaging glue is UV glue, the LED unit can be an ultraviolet light emitting diode unit with a wavelength range of 305 to 405 nanometers, for curing UV glue. For example, when the LED unit is a UV-A ultraviolet light emitting diode unit, its wavelength range is between 305 and 325 nanometers, or specifically 315 nanometers, 320 nanometers or 325 nanometers. When the LED unit is other ultraviolet light emitting diode units, its wavelength range is between 325 and 405 nanometers. However, in other embodiments, the LED unit can also be a visible light LED unit with a color temperature between 3000K and 6000K. During the curing process, the present invention can only light up the LED unit corresponding to the packaging glue curing area and turn off other LED units corresponding to the display effective area to achieve the effect of saving energy.

[0073] Figure 7 FIG. 1 is a flow chart of the control method of the present invention. Figure 7As shown, the control method of the dimming control device 100 of the LED light board of the present embodiment includes the following steps: ST1: Provide a dimming control device 100 of the LED light board, including an LED light board 110, a micro control unit 120, a multi-channel control unit 130 and a power supply 140. The LED light board 110 includes LED modules 111 arranged in an M*N matrix, where M and N are both greater than 1, and each LED module 111 includes a plurality of LED units 112, each LED unit 112 is a high-power LED unit, and each LED unit 112 receives a corresponding switch control signal S4 and a pulse dimming control signal S3 and is controlled individually, the LED light board 110 is connected to the power supply 140 and the multi-channel control unit 130, and the micro control unit 120 is connected to the multi-channel control unit 130; ST2: Receive input data S1 from the user interface 200 to the micro control unit 120 to calculate the corresponding light emitting diode module 112. The detection unit 150 detects the power of each LED unit 112 and feeds the detection result back to the micro control unit 120, so that the micro control unit 120 can fine-tune the power of each LED unit 112. The detection unit 150 can be a multi-channel switch to detect the power of each LED unit 112.

[0074] Figure 5 Schematic diagram of user interface 200 of the control method of the present invention. User interface 200 includes LED light board graphic 210, parameter input field 220, status display field 230 and action key 240. Parameter input field 220 allows users to set conditions, including user field 221, dimming parameter input field 222 and irradiation time input field 223. Status display field 230 can provide information of LED light board 110, including light board status field 224, information field 225 and temperature field 226. Action key 240 includes start key 241 and stop key 242. The control method of user interface 200 is described below.

[0075] The LED light board graphic 210 includes a plurality of grid points, and the positions of the grid points correspond to the actual positions of the LED units 112 in the LED light board 110. In practical applications, it can be one-to-one or one-to-many (one grid point on the LED light board graphic 210 corresponds to multiple LED units 112). The user can enter a name or work number in the user field 221. The dimming parameter input field 222 includes a plurality of dimming parameters, such as 0%, 15%, 50%, 100%, etc., 100% represents the maximum brightness that a single LED unit 112 can be turned on, 50% represents half of the maximum brightness that a single LED unit 112 can be turned on, and 0% represents turning off a single LED unit 112. After the user first selects a dimming parameter (for example, press a button with a dimming parameter of 75%, drag it to the LED light board graphic 210, and drag out a block in the LED light board graphic 210, all LED units 112 in the block will be set to a dimming parameter of 75%. Similarly, when the user selects another dimming parameter (for example, press The button with the dimming parameter of 25% is dragged to the LED light board graphic 210, and another block is dragged out in the LED light board graphic 210, and all the LED units 112 in the block will be set to dimming parameters of 25%. When the setting is completed, the user can press the start key 241 in the action key 240, and the user interface 200 provides the output image S1 to the micro control unit 120 according to the conditions set by the user. The micro control unit calculates the dimming signal S2 corresponding to each LED unit 112 according to the output image S1, and transmits the dimming signal S2 to the multi-channel control unit 130. The following steps have been described in the above embodiment and will not be repeated here.

[0076] Optionally, in the second embodiment of the present invention, the user interface 200 may further add an illumination mode field 227 in the parameter input field 220, which includes an area mode 2271 and a border mode 2272. The user interface 200 defaults to the area mode 2271, so when the user sets a dimming parameter (e.g., 75%) and drags to an area on the LED light board graphic 210, the corresponding "all" LED units 112 in the area will be set to the same dimming parameter (75%), as described above. In another usage scenario, when the user first selects the border mode 2272, sets a dimming parameter (50%) and drags to an area on the LED light board graphic 210, only the LED units 112 corresponding to the overlapping area of ​​the "frame line" dragged by the user will be set to the dimming parameter (50%), and the remaining LED units 112 will not be set to the dimming parameter (50%).

[0077] To further explain the usage scenarios of different irradiation mode fields 227, please also refer to Figure 5 and Fig. 6A . Fig. 6A This is a schematic diagram of an LED light board and a display device according to a second embodiment of the present invention. This embodiment further includes a display device 300, and a closed-shaped encapsulation glue 320 is applied to the display device 300. The encapsulation glue receives the light emitted by the LED light board 110 and is solidified. The display device 300 includes at least one encapsulation glue coating area 311 and at least one display effective area 312. The encapsulation glue coating area 311 is in a closed shape and surrounds the display effective area 312. The purpose is to prevent the display medium (such as liquid crystal) in the display device from leaking out, and it has waterproof and dustproof functions. When the display device 300 does not need to be cut, there is only one encapsulation glue coating area 311 and one display effective area 312; when the display device 300 needs to be cut, the display device 300 may include multiple sub-areas 310, such as Fig. 6A As shown, the display device 300 includes four sub-areas 310, each of which has a packaging glue coating area 311 and a display effective area 312. The LED light board 110 includes a first area 1111 and a second area 1112. The first area 1111 includes a plurality of LED units 112 and corresponds to the packaging glue coating area 311. The second area 1112 includes a plurality of LED units 112 and corresponds to the display effective area 312. Users can use Figure 5In the border mode 2272 of the user interface 200, first click on a higher dimming parameter (for example, 75%), and drag out a first quadrilateral on the LED light board graphic 210. The first quadrilateral corresponds to the area of ​​the first zone 1111 of the LED light board 100. Therefore, only the LED units 112 corresponding to the overlapping area of ​​the "frame line" of the first quadrilateral will be set to the dimming parameter (75%). Then click on the area mode 2271, and then click on a lower dimming parameter (for example, 10%), and drag out a second quadrilateral on the LED light board graphic 210. The second quadrilateral corresponds to the area of ​​the second zone 1112 on the LED light board 100, and the second quadrilateral is smaller than the first quadrilateral. In the scenario of the area mode 2271, "all" LED units 112 corresponding to the area of ​​the second quadrilateral will be set to the same dimming parameter (10%). Since the user interface 200 converts the graphics set by the user into input data S1 and provides it to the micro control unit 120, the micro control unit 120 calculates the dimming signal S2 corresponding to each LED unit 112 and transmits it to the multi-channel control unit 130. The multi-channel control unit 130 provides the corresponding pulse dimming control signal S3 and switch control signal S4 to the LED light board 110 according to the number or address of each LED unit 112. Therefore, in this embodiment, the pulse dimming control signal S3 received by each LED unit 112 in the first area 1111 of the LED light board 110 is greater than the pulse dimming control signal S3 received by each LED unit 112 in the second area 1112. Therefore, in this embodiment, when the dimming control device of the LED light board is used for curing packaging, curing packaging can be performed on the packaging glue coating area of ​​the display device to improve the reliability of the curing packaging and save energy. In other embodiments, the user may select only the border mode and only set the dimming parameters of the LED unit 1112 corresponding to the first zone 1111 of the LED light board 100. The dimming parameters of the grid points that do not overlap with the frame line dragged by the user will be 0%.

[0078] FIG. 6B to FIG. 6E Schematic diagram of the LED light panels of the third to sixth embodiments. Figure 6B The example is to light up only a single light emitting diode unit 112 as a light emitting point 701 . Figure 6C It is shown that when the required brightness is stronger, four adjacent LED units 112 can be lit up to form a light-emitting point 702 . Fig.6D It indicates that strong brightness is needed, but the brightness does not need to be Figure 6CWhen the power is strong enough, five adjacent LED units 112 in an X shape can be lit. Since the five LED units are close to each other, a bright and large light spot 703 can be formed visually. The user can further set the power of the center of the five LED units 112 to be higher and the power of the surrounding parts to be lower. If a stronger brightness is needed, Fig. 6E As shown, nine adjacent LED units 112 may be lit up as a light-emitting point 704, or even sixteen, twenty-five (or more) adjacent LED units may be lit up as a light-emitting point, but the present invention is not limited thereto.

[0079] In summary, the dimming control device of the light emitting diode light board of the present invention can light up only the light emitting diode unit corresponding to the curing area of ​​the packaging glue and turn off other light emitting diode units corresponding to the effective display area by individually regulating each light emitting diode unit, so as to achieve the effect of saving energy. Therefore, the point / line / surface lighting area design can be achieved according to the needs of the user. The present invention also uses high-power light emitting diode units, so it can provide packaging of high-power large-area display devices at low driving voltage. At the same time, according to the control method of the dimming control device of the light emitting diode light board of the present invention, the operator can use the light emitting diode light board graphics on the user interface to individually set the dimming brightness of each light emitting diode unit on the light emitting diode light board, so as to perform curing and packaging for specific areas of the display device, thereby improving the reliability of curing and packaging. In more detail, the control method of the dimming control device of the light emitting diode light board of the present invention can use only one set of curing equipment to cure a variety of display devices with different packaging sizes, so that the process is flexible, and the user can apply the template in the storage device without having to reset the light emitting diode light board graphics each time.

[0080] Although the technical contents of the present invention have been disclosed as above in the preferred embodiments, they are not used to limit the present invention. Slight changes and modifications made by those skilled in the art without departing from the spirit of the present invention should all be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the appended claims.

Claims

1. A dimming control device for a light emitting diode lamp panel, characterized in that: Include: An LED light panel, comprising LED modules arranged in an M*N matrix, where M and N are both greater than 1, each of the LED modules comprising a plurality of LED units, each of which receives a switch control signal and a pulse dimming control signal and is controlled individually; A micro control unit, used for receiving input data to calculate a dimming signal corresponding to each of the light emitting diode units; A multi-channel control unit, connected to the micro control unit to receive the dimming signal, and providing the corresponding pulse dimming control signal and the switch control signal to the light emitting diode lamp board according to the address of each light emitting diode unit; as well as A power supply, connected to the light emitting diode light board, for providing driving power to the light emitting diode light board; Wherein, the plurality of light emitting diode units are high-power light emitting diode units.

2. The dimming control device of the light emitting diode lamp panel according to claim 1, characterized in that: The LED light board is used for curing a packaged display device, and the LED light board includes a first area and a second area, the first area surrounds the second area, and the pulse dimming control signal received by each LED unit in the first area is greater than the pulse dimming control signal received by each LED unit in the second area.

3. The dimming control device of the light emitting diode lamp panel according to claim 1, characterized in that: The multi-channel control unit includes a dimming unit, an isolation conversion unit and a switch control unit connected in series in sequence, the dimming unit outputs a first signal to the isolation conversion unit, the isolation conversion unit provides the pulse dimming control signal to the light-emitting diode light board, and the isolation conversion unit provides a second signal to the switch control unit, and the switch control unit provides the switch control signal to the light-emitting diode light board.

4. The dimming control device of the light emitting diode lamp panel according to claim 1, characterized in that: It further comprises a detection unit, which is connected to the light emitting diode light board and is used to detect parameters of the light emitting diode light board and provide the parameters to the micro control unit.

5. The dimming control device of the light emitting diode lamp panel according to claim 1, characterized in that: The plurality of light emitting diode units are ultraviolet light emitting diode units.

6. The dimming control device for a light emitting diode lamp panel as claimed in claim 1, characterized in that: It further includes a memory unit, which is connected to the micro control unit to store the dimming signal.

7. The dimming control device for a light emitting diode lamp panel as claimed in claim 1, characterized in that: It further comprises a plurality of heat dissipation units, each of the heat dissipation units being arranged corresponding to a plurality of the light emitting diode light panels.

8. The dimming control device of the light emitting diode lamp panel according to claim 1, characterized in that: The driving voltage of each of the plurality of light emitting diode units is less than or equal to 12 volts.

9. The dimming control device for a light emitting diode lamp panel according to claim 1, characterized in that: The wavelength range of the plurality of light emitting diode units is between 305 and 405 nanometers.

10. The dimming control device of the light emitting diode lamp panel according to claim 1, characterized in that: The light emitting diode lamp panel is used for curing packaging.

11. A control method for a dimming control device of a light emitting diode lamp panel, characterized in that: include: Provide a dimming control device for a light emitting diode lamp panel as claimed in claim 1; Receiving input data from a user interface to the micro control unit to calculate a dimming signal corresponding to each of the light emitting diode units; Transmitting the dimming signal to the multi-channel control unit to provide the corresponding pulse dimming control signal and the switch control signal to the light emitting diode lamp board; as well as Providing driving power to the light emitting diode lamp panel.

12. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: The multi-channel control unit includes a dimming unit, an isolation conversion unit and a switch control unit connected in series in sequence, the dimming unit outputs a first signal to the isolation conversion unit, the isolation conversion unit provides the pulse dimming control signal to the light-emitting diode light board, and the isolation conversion unit provides a second signal to the switch control unit, and the switch control unit provides the switch control signal to the light-emitting diode light board.

13. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: A dimming parameter input field and an LED light board graphic are provided on the user interface, wherein the LED light board graphic includes a plurality of grid points, each of which corresponds to each of the LED units, and each of which receives the dimming parameters from the dimming parameter input field to form the input data.

14. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: The dimming control device of the LED light board further includes a display device, and the packaging glue is arranged on the display device. The packaging glue is in a closed shape, and the packaging glue receives the light emitted by the LED light board and is solidified.

15. The control method of the dimming control device of the light emitting diode lamp panel according to claim 14, characterized in that: The display device includes a plurality of sub-regions, and a plurality of packaging glues are respectively arranged in the plurality of sub-regions.

16. The control method of the dimming control device of the light emitting diode lamp panel according to claim 14, characterized in that: The LED light board includes a first area and a second area, the first area surrounds the second area, and the position of the first area corresponds to the position of the packaging glue, and the pulse dimming control signal received by each LED unit in the first area is greater than the pulse dimming control signal received by each LED unit in the second area.

17. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: A detection unit is further provided, which is connected to the light emitting diode light board to detect parameters of the light emitting diode light board and provide the parameters to the micro control unit.

18. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: A memory unit is further provided, and the memory unit is connected to the micro control unit to store the dimming signal.

19. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: The dimming control device of the LED light panel further includes a plurality of heat dissipation units, and each of the heat dissipation units is arranged corresponding to a plurality of the LED light panels.

20. The control method of the dimming control device of the light emitting diode lamp panel according to claim 11, characterized in that: The driving voltage of each of the plurality of light emitting diode units is less than or equal to 12 volts.

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