Fluorescent powder spraying device for backlight source wafer of full-spectrum display system

Abstract

The utility model discloses a fluorescent powder spraying device for a backlight source wafer of a full-spectrum display system, which comprises a spraying box and a material box arranged at the top of the spraying box, a position-adjustable mounting seat is arranged in the spraying box, a nozzle is arranged at the bottom of the mounting seat, a pipeline communicated with an inner cavity of the nozzle is arranged on the side surface of the mounting seat, and the material box is arranged on the material box. The end, away from the nozzle, of the pipeline communicates with the bottom of the inner cavity of the material box, an air inlet assembly communicating with the inner cavity of the material box is arranged on the side face of the spraying box, and a filtering assembly is arranged at the air inlet end of the air inlet assembly. According to the fluorescent powder spraying device for the backlight source wafer of the full-spectrum display system, a full-spectrum backlight source display product is developed by adopting a spectrum color complementing technology that the purple light wafer is matched with blue powder, cyan powder, green powder and red powder on the backlight source, heating treatment can be conducted on the fluorescent powder in the fluorescent powder spraying color complementing process, the adhesion performance of the fluorescent powder is improved, and the quality of the backlight source product is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor fabrication technology, specifically to a phosphor spraying device for a backlight chip of a full-spectrum display system. Background Technology

[0002] Full spectrum refers to a spectral curve that includes ultraviolet, visible, and infrared light, with the proportions of red, green, and blue in the visible light portion approximating sunlight and a color rendering index close to 100. The concept of full spectrum is widely used in the lighting field. Research and development of full spectrum LED light sources has been ongoing internationally for many years, but the technology has been limited to achieving continuous spectra across all bands of the visible light portion to improve the color rendering index. However, achieving continuous spectra in the ultraviolet and infrared portions is difficult. The spectra of each ultraviolet and infrared LED chip are very narrow, limited to a specific band, making it very challenging and costly to combine them into a continuous spectrum. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a phosphor spraying device for backlight chips of a full-spectrum display system. The device uses a violet chip with blue, cyan, green and red phosphors for spectral color compensation on the backlight to develop full-spectrum backlight display products. In addition, the phosphor can be heated during the phosphor spraying and color compensation process to improve its adhesion performance and ensure the quality of the backlight product. This can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a phosphor spraying device for a backlight chip of a full-spectrum display system, comprising a spraying box and a material box disposed on the top of the spraying box, wherein an adjustable mounting base is disposed inside the spraying box, a nozzle is mounted on the bottom of the mounting base, a pipe communicating with the inner cavity of the nozzle is mounted on the side of the mounting base, and the end of the pipe away from the nozzle is communicating with the bottom of the inner cavity of the material box, an air inlet assembly communicating with the inner cavity of the material box is disposed on the side of the spraying box, and a filter assembly is disposed at the air inlet end of the air inlet assembly.

[0005] As a preferred technical solution of this utility model, the pipeline includes a heat-conducting pipe and a flexible hose. One end of the heat-conducting pipe is connected and fixed to one end of the flexible hose. The end of the heat-conducting pipe away from the flexible hose is installed on the side of the mounting base and communicates with the inner cavity of the nozzle. The end of the flexible hose away from the heat-conducting pipe is fixed on the side of the material box and communicates with the bottom of the inner cavity of the material box. An electric heating component is installed on the side of the mounting base near the heat-conducting pipe, and the heating end of the electric heating component is set towards the heat-conducting pipe.

[0006] As a preferred technical solution of this utility model, the air intake component includes a pump group installed on the side of the spray box, an air intake pipe communicating with the inner cavity of the material box is provided at the air outlet of the pump group, and a one-way valve is installed on the air intake pipe. The top of the material box is open, and a baffle plate is provided on the top of the material box to cover and seal the open. An observation window is provided on the material box.

[0007] As a preferred embodiment of this utility model, the filter assembly includes a filter box installed on the side of the spray box, and an air extraction pipe communicating with the inner cavity of the filter box is provided at the air inlet of the pump unit.

[0008] As a preferred technical solution of this utility model, the spray box is provided with a longitudinal drive assembly and a positioning seat. The longitudinal drive assembly includes a first motor installed on the side of the spray box, a first screw located inside the spray box is installed on the output shaft of the first motor, and a first threaded cylinder is installed on the side of the positioning seat. The first threaded cylinder is threadedly connected to the first screw.

[0009] As a preferred technical solution of this utility model, a transverse drive assembly is provided inside the spray box. The transverse drive assembly includes a second motor installed in the positioning seat. A second screw is installed on the output shaft of the second motor. A second threaded cylinder that is threadedly connected to the second screw is provided on the side of the mounting seat. A guide plate is rotatably installed at the end of the second screw away from the second motor. A positioning plate for limiting the movement of the guide plate is installed inside the spray box.

[0010] As a preferred embodiment of this utility model, an electric telescopic rod is provided between the second threaded cylinder and the mounting base. The fixed end of the electric telescopic rod is connected and fixed to the outside of the second threaded cylinder, and the telescopic end of the electric telescopic rod is connected and fixed to the top of the mounting base.

[0011] As a preferred embodiment of this utility model, a belt conveyor mechanism is installed below the spray box, and an inlet and an outlet are provided on the side of the spray box near the belt conveyor mechanism.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The phosphor spraying device for the backlight chip of the full-spectrum display system of this utility model heats the heat pipe through an electric heating component, thereby heating the phosphor inside the heat pipe. Then, a high-pressure airflow is applied through an air intake component to spray the heated phosphor out of the nozzle, so that the phosphor adheres to the backlight chip, which facilitates the supplementation of the full spectrum color of the backlight. Heating the phosphor increases the adhesion strength of the phosphor on the chip, ensuring the quality of the backlight product manufacturing.

[0014] 2. The phosphor spraying device for the backlight chip of the full-spectrum display system of this utility model places the backlight chip on the belt conveyor mechanism, and the belt conveyor mechanism transports the chip to the spraying box through the feed port. After the detection component set in the spraying box detects the position of the chip, it controls the horizontal drive component and the vertical drive component to work and adjust the position of the nozzle so that the nozzle can move above the chip to spray phosphor, supplement the full spectrum color, and thus facilitate the development of full-spectrum backlight display products. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view structural diagram of the present utility model;

[0017] Figure 3 This is a side view of the structure of this utility model;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure after the longitudinal drive component has been removed.

[0019] In the diagram: 1 Spraying box, 2 Belt conveyor mechanism, 3 Mounting base, 4 Nozzle, 5 Heat conduction pipe, 6 Hose, 7 Material box, 8 Observation window, 9 Pump group, 10 Air inlet pipe, 11 One-way valve, 12 Filter box, 13 First motor, 14 First screw, 15 Positioning seat, 16 First threaded cylinder, 17 Second motor, 18 Second screw, 19 Guide plate, 20 Positioning plate, 21 Electric telescopic rod, 22 Electric heating assembly. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4This utility model provides a technical solution: a phosphor spraying device for a backlight chip of a full-spectrum display system, including a spraying box 1 and a material box 7 set on the top of the spraying box 1. The material box 7 is used to store phosphor, and the phosphor color can be set according to the requirements of the full-spectrum backlight. An adjustable mounting base 3 is set inside the spraying box 1. A nozzle 4 is installed at the bottom of the mounting base 3. The position of the mounting base 3 can be adjusted to facilitate the flexible use of the nozzle 4. A pipe communicating with the inner cavity of the nozzle 4 is installed on the side of the mounting base 3, and the end of the pipe away from the nozzle 4 is connected to the bottom of the inner cavity of the material box 7. An air inlet component communicating with the inner cavity of the material box 7 is set on the side of the spraying box 1. The air inlet component pressurizes the material box 7, so that the phosphor in the material box 7 enters the nozzle 4 through the pipe and is sprayed out through the nozzle 4.

[0022] The pipeline includes a heat-conducting pipe 5 and a flexible hose 6. The flexible hose 6 facilitates the adjustment of the nozzle 4 position. The heat-conducting pipe 5 is a rigid pipe, with one end of the heat-conducting pipe 5 connected and fixed to one end of the flexible hose 6. The end of the heat-conducting pipe 5 away from the flexible hose 6 is installed on the side of the mounting base 3 and communicates with the inner cavity of the nozzle 4. The end of the flexible hose 6 away from the heat-conducting pipe 5 is fixed on the side of the material box 7 and communicates with the bottom of the inner cavity of the material box 7. An electric heating component 22 is installed on the side of the mounting base 3 near the heat-conducting pipe 5, with the heating end of the electric heating component 22 facing the heat-conducting pipe 5. The electric heating component 22 includes, but is not limited to, an electric heating plate or an electromagnetic induction coil. The electric heating component 22 heats the heat-conducting pipe 5, causing the phosphor inside the heat-conducting pipe 5 to be heated. Then, a high-pressure airflow is applied through the air intake component to spray the heated phosphor out from the nozzle 4, allowing the phosphor to adhere to the backlight chip, facilitating the supplementation of the full spectrum color of the backlight. Heating the phosphor improves the adhesion strength of the phosphor on the chip, ensuring the quality of the backlight product manufacturing.

[0023] The air intake assembly includes a pump unit 9 installed on the side of the spray box 1. An air intake pipe 10 connected to the inner cavity of the material box 7 is provided at the air outlet of the pump unit 9. The operation of the pump unit 9 is controlled to draw air from the outside. The drawn air is compressed and then transported to the material box 7 through the air intake pipe 10, so that the phosphor powder can be sprayed out from the nozzle 4. A one-way valve 11 is installed on the air intake pipe 10. The one-way valve 11 is a one-way air intake valve to prevent the airflow entering the material box 7 from flowing back through the air intake pipe 10. The top of the material box 7 is open, which makes it easy to replenish the phosphor powder into the material box 7. A baffle plate is provided on the top of the material box 7 to cover and seal the opening. The baffle plate ensures the airtightness of the material box 7 during use. An observation window 8 is provided on the material box 7 to observe the remaining amount of phosphor powder in the material box 7, so as to facilitate timely replenishment.

[0024] A filter assembly is provided at the air intake end of the air intake assembly. The filter assembly includes a filter box 12 installed on the side of the spray box 1. An air extraction pipe connected to the inner cavity of the filter box 12 is provided at the air intake port of the pump group 9. An air inlet is provided on the side of the filter box 12 away from the air extraction pipe. A filter screen is installed at the air inlet, and a replaceable filter element is provided inside the filter box 12. The filter box 12 is used to filter the gas extracted by the pump group 9 to prevent dust in the air from contaminating the fluorescent powder.

[0025] The spray box 1 is equipped with a longitudinal drive assembly and a positioning seat 15. The longitudinal drive assembly includes a first motor 13 installed on the side of the spray box 1. A first screw 14 located inside the spray box 1 is installed on the output shaft of the first motor 13. A first threaded cylinder 16 is installed on the side of the positioning seat 15. The first threaded cylinder 16 is threadedly connected to the first screw 14 and controls the first motor 13 to work. The first motor 13 drives the first screw 14 to rotate and drives the positioning seat 15 on the first threaded cylinder 16 to move, so as to facilitate the adjustment of the position of the nozzle 4.

[0026] The spray box 1 is equipped with a transverse drive assembly, which includes a second motor 17 installed in the positioning seat 15. A second screw 18 is installed on the output shaft of the second motor 17. A second threaded cylinder is provided on the side of the mounting seat 3 and is threadedly connected to the second screw 18. The second motor 17 controls the operation of the second motor 17. The second motor 17 drives the second screw 18 to rotate and drive the mounting seat 3 on the second threaded cylinder to move, which facilitates the adjustment of the nozzle 4 position. A guide plate 19 is rotatably installed at the end of the second screw 18 away from the second motor 17. A positioning plate 20 is installed in the spray box 1 to limit the movement of the guide plate 19. When the longitudinal drive assembly drives the positioning seat 15 to move, the second motor 17 on the positioning seat 15 drives the guide plate 19 to move through the second screw 18. The positioning plate 20 installed on the side of the spray box 1 limits and guides the movement of the guide plate 19, improving the stability of the transverse drive assembly during movement.

[0027] An electric telescopic rod 21 is provided between the second threaded cylinder and the mounting base 3. The electric telescopic rod 21 includes, but is not limited to, a servo electric cylinder or an electric hydraulic cylinder. The fixed end of the electric telescopic rod 21 is connected and fixed to the outside of the second threaded cylinder, and the telescopic end of the electric telescopic rod 21 is connected and fixed to the top of the mounting base 3. The electric telescopic rod 21 is used to adjust the height of the nozzle 4.

[0028] A belt conveyor mechanism 2 is installed below the spraying box 1, and an inlet and an outlet are provided on the side of the spraying box 1 near the belt conveyor mechanism 2. After the backlight chip is placed on the belt conveyor mechanism 2, the belt conveyor mechanism 2 transports the chip into the spraying box 1 through the inlet. After the detection component installed in the spraying box 1 detects the position of the chip, it controls the horizontal drive component and the vertical drive component to work and adjust the position of the nozzle 4 so that the nozzle 4 can move above the chip to spray phosphor, complete the missing spectrum of the chip, and thus facilitate the development of full-spectrum backlight display products. After the phosphor is sprayed on the chip, the belt conveyor mechanism 2 transports the chip to the outside through the outlet.

[0029] The belt conveyor mechanism 2, pump group 9, first motor 13, second motor 17, electric telescopic rod 21, electric heating component 22, etc. used in this utility model are all commonly used electronic components in the prior art. Their working methods and circuit structures are known technologies. The operation of the belt conveyor mechanism 2, pump group 9, first motor 13, second motor 17, electric telescopic rod 21, electric heating component 22 and other electronic components is controlled by setting a switch group or PLC controller, which will not be described in detail here.

[0030] This spraying device uses a spectral color-complementing technology that combines a violet light chip with blue, cyan, green, and red phosphors on the backlight to develop full-spectrum backlight display products. Furthermore, the phosphor can be heated during the spraying and color-complementing process to improve its adhesion and ensure the quality of the backlight products.

[0031] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A phosphor spraying device for full spectrum display system backlight wafer, comprising a spraying box (1) and a material box (7) arranged on the top of the spraying box (1), characterized in that: The spray box (1) is provided with an adjustable mounting base (3). A nozzle (4) is installed at the bottom of the mounting base (3). A pipe communicating with the inner cavity of the nozzle (4) is installed on the side of the mounting base (3). The end of the pipe away from the nozzle (4) is communicating with the bottom of the inner cavity of the material box (7). An air intake component communicating with the inner cavity of the material box (7) is provided on the side of the spray box (1). A filter component is provided at the air intake end of the air intake component.

2. The phosphor spray apparatus for full spectrum display system backlight wafer according to claim 1, characterized in that: The pipeline includes a heat-conducting pipe (5) and a hose (6). One end of the heat-conducting pipe (5) is connected and fixed to one end of the hose (6). The end of the heat-conducting pipe (5) away from the hose (6) is installed on the side of the mounting base (3) and communicates with the inner cavity of the nozzle (4). The end of the hose (6) away from the heat-conducting pipe (5) is fixed on the side of the material box (7) and communicates with the bottom of the inner cavity of the material box (7). An electric heating component (22) is installed on the side of the mounting base (3) near the heat-conducting pipe (5), and the heating end of the electric heating component (22) is set towards the heat-conducting pipe (5).

3. The phosphor spray apparatus for full spectrum display system backlight wafer according to claim 1, wherein: The air intake assembly includes a pump group (9) installed on the side of the spray box (1). The air outlet of the pump group (9) is provided with an air intake pipe (10) that communicates with the inner cavity of the material box (7). A one-way valve (11) is installed on the air intake pipe (10). The top of the material box (7) is open. A baffle plate is provided on the top of the material box (7) to cover and seal the open. An observation window (8) is provided on the material box (7).

4. The phosphor spray apparatus for full spectrum display system backlight wafer of claim 3, wherein: The filter assembly includes a filter box (12) installed on the side of the spray box (1), and the air inlet of the pump group (9) is provided with an air extraction pipe that communicates with the inner cavity of the filter box (12).

5. The phosphor spray apparatus for full spectrum display system backlight wafer of claim 1, wherein: The spray box (1) is provided with a longitudinal drive assembly and a positioning seat (15). The longitudinal drive assembly includes a first motor (13) installed on the side of the spray box (1). A first screw (14) located inside the spray box (1) is installed on the output shaft of the first motor (13). A first threaded cylinder (16) is installed on the side of the positioning seat (15). The first threaded cylinder (16) is threadedly connected to the first screw (14).

6. The phosphor spray apparatus for full spectrum display system backlight wafer of claim 5, wherein: The spray box (1) is provided with a transverse drive assembly, which includes a second motor (17) installed in the positioning seat (15). A second screw (18) is installed on the output shaft of the second motor (17). A second threaded cylinder is provided on the side of the mounting seat (3) and is threadedly connected to the second screw (18). A guide plate (19) is rotatably installed at the end of the second screw (18) away from the second motor (17). A positioning plate (20) for limiting the movement of the guide plate (19) is installed in the spray box (1).

7. The phosphor spray apparatus for full spectrum display system back light wafer of claim 6, wherein: An electric telescopic rod (21) is provided between the second threaded cylinder and the mounting base (3). The fixed end of the electric telescopic rod (21) is connected and fixed to the outside of the second threaded cylinder, and the telescopic end of the electric telescopic rod (21) is connected and fixed to the top of the mounting base (3).

8. The phosphor spray apparatus for full spectrum display system back light wafer of claim 1, wherein: A belt conveyor (2) is installed below the spray box (1), and an inlet and an outlet are provided on the side of the spray box (1) near the belt conveyor (2).

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