LCD backlight source module and driving method thereof

Abstract

The invention discloses an LCD backlight source module and a driving method thereof.The LCD backlight source module comprises a mounting structure, a protection structure is mounted at the top of the mounting structure, a driving assembly is mounted at the bottom of the mounting structure, the mounting structure comprises a mounting frame, a driving module and a lens assembly are mounted in the mounting frame, and a bottom plate is mounted at the bottom of the mounting frame; a heat dissipation plate is embedded in the surface of the bottom plate, a sealing ring is fixed to the top of the mounting frame, the driving module comprises a backlight plate, an LCD is mounted at the top of the backlight plate, a polarization plate is mounted at the top of the LCD, a substrate is mounted at the top of the polarization plate, a diffusion sheet is mounted at the top of the substrate, the driving assembly comprises a driving shell, and a circuit board is mounted in the driving shell. A driving module is welded to the top of the circuit board, the protection structure comprises a protection frame, a glass plate is installed in the protection frame, and a sealing gasket is installed between the glass plate and the protection frame. The heat dissipation effect of the LCD backlight source module is improved, and meanwhile the using stability is relatively poor.

Description

Technical Field

[0001] The present invention relates to the technical field of LCD backlight modules, and in particular to an LCD backlight module and a driving method thereof. Background Art

[0002] The backlight module is a key component of a liquid crystal display (LCD) panel. Its function is to provide sufficient brightness and evenly distributed light to properly display images. The so-called backlight is the light source located behind the LCD, and its lighting directly affects the visual quality of the liquid crystal display module (LCM). Liquid crystal itself does not emit light; it modulates light to display graphics or characters. The development of backlights dates back to World War II, when ultra-small tungsten filament lamps were used as backlights for aircraft instruments. This marked the initial stage of backlight development. After half a century of development, backlighting has become an independent discipline in electronics and has gradually become a hot research and development topic.

[0003] Chinese Patent No. CN114114735A provides a COG liquid crystal display module, comprising LCD glass, a backlight assembly disposed at the bottom of the LCD glass, an IC bound to one side of the LCD glass surface via an ACF, an FPC connected to one side of the LCD glass panel, and a PCB board connected to one end of the FPC. The present invention also provides a COG liquid crystal display module processing device, comprising a frame and a conveyor belt, the conveyor belt being mounted on the top of the frame, a support bar slidably connected to one side of the upper end of the frame, two support bars being provided, and a movable top plate being fixed to the upper ends of the two support bars. The present invention optimizes the cleaning process of the plasma cleaning step of the glass panel in the traditional COG liquid crystal display module production process. Compared with the traditional cleaning step, the cleaning process no longer needs to wait for the cleaned glass panel to be unloaded and a new glass panel to be loaded before the next cleaning operation can be carried out after the cleaning is completed, thereby greatly improving the cleaning efficiency.

[0004] The LCD backlight module in the prior art has poor heat dissipation effect, relatively poor sealing performance, and relatively poor stability in use. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention aims to provide an LCD backlight module with relatively good heat dissipation and sealing performance and a driving method thereof.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a technical solution adopted by an LCD backlight source module and a driving method thereof: comprising a mounting structure, a protective structure being mounted on the top of the mounting structure, a driving assembly being mounted on the bottom of the mounting structure, the mounting structure comprising a mounting frame, a driving module and a lens assembly being mounted inside the mounting frame, a base plate being mounted on the bottom of the mounting frame, a heat dissipation plate being embedded and mounted on the surface of the base plate, a sealing ring being fixed on the top of the mounting frame, the driving module comprising a backlight panel, an LCD being mounted on the top of the backlight panel, a polarizing plate being mounted on the top of the LCD, a substrate being mounted on the top of the polarizing plate, a diffusion plate being mounted on the top of the substrate, the driving assembly comprising a driving shell, a circuit board being mounted inside the driving shell, and a driving module being welded on the top of the circuit board.

[0009] As a preferred solution, the protective structure includes a protective frame, a glass plate is installed inside the protective frame, and a sealing gasket is installed between the glass plate and the protective frame.

[0010] As a preferred solution, a mounting column is installed at the bottom of the protective frame, and a mounting hole is opened at the top of the mounting frame.

[0011] As a preferred solution, the lens assembly includes an upper glass, the upper glass is located on the top of the diffusion sheet, and a scattering film is installed on the top of the upper glass.

[0012] As a preferred solution, a phase difference plate is provided on the top of the scattering film, and a polarizer is provided on the top of the phase difference plate.

[0013] As a preferred solution, a partition is installed inside the driving shell, and a power supply module is installed inside the driving shell.

[0014] As a preferred solution, a connecting seat is installed on one side of the drive housing, and a power cord is installed on one side of the connecting seat.

[0015] As a preferred solution, a support column is installed inside the driving shell, the circuit board is fixedly installed on the support column, and a fixing hole is opened on the top of the circuit board.

[0016] As a preferred solution, a control chip is welded on the top of the circuit board, and a feedback module is welded on the top of the circuit board.

[0017] A method for driving an LCD backlight module comprises the following steps:

[0018] S1. Power supply: Connect the power cord to the power supply mechanism to power the LCD backlight module, and then provide stable power to the circuit board through the power supply module;

[0019] S2, control: the control chip used controls the driver module and LCD backlight module for control;

[0020] S3, drive: the drive module drives and controls the LCD backlight module;

[0021] S4. Feedback: The feedback module is used to feed back the working status of the LCD backlight module to the control chip, and then the control chip adjusts the working status of the LCD backlight module.

[0022] (3) Beneficial effects

[0023] Compared with the prior art, the present invention provides an LCD backlight module and a driving method thereof, which have the following beneficial effects:

[0024] 1. Through the installation structure and protective structure, the large-area heat sink in the installation structure can improve the heat dissipation effect of the LCD backlight module. At the same time, the sealing ring can improve the sealing of the LCD backlight module. At the same time, the sealing gasket can prevent rainwater from entering the LCD backlight module. The installation column passes through the installation hole and is then fixed by bolts to improve the stability of the LCD backlight module assembly.

[0025] 2. By setting up the driving module and lens assembly, the components in the driving module can improve the stability of the LCD backlight module. The adopted lens assembly can improve the driving module to protect and change the light, while improving the display quality of the LCD backlight module when in use.

[0026] 3. Through the setting of the driving component, the power supply module in the driving component can provide stable power supply to the control chip, driving module and feedback module, thereby improving the stability of the driving component and the power supply to the LCD backlight module. The feedback module used can provide real-time feedback on the usage status of the LCD backlight module.

[0027] 4. The driving method of the present invention only requires power-on during driving, and then the LCD backlight module is driven by the cooperation of the control chip and the driving module, which makes it easy for users to drive the LCD backlight module and improves the convenience of driving the LCD backlight module. At the same time, the feedback module used can provide real-time feedback on the usage status of the LCD backlight module, making it easy for the driving module to adjust the working status of the LCD backlight module in a timely manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the protection structure of the present invention;

[0030] Figure 3This is a schematic diagram of the installation structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the drive module structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the drive assembly of the present invention;

[0033] Figure 6 This is a flow chart of the driving method of the present invention.

[0034] In the figure: 1. Mounting structure; 2. Protection structure; 3. Drive module; 4. Lens assembly; 5. Drive assembly; 6. Protection frame; 7. Glass plate; 8. Sealing gasket; 9. Mounting column; 10. Mounting frame; 11. Mounting hole; 12. Bottom plate; 13. Heat sink; 14. Sealing ring; 15. Backlight plate; 16. LCD; 17. Polarizing plate; 18. Substrate; 19. Diffuser; 20. Upper glass; 21. Scattering film; 22. Phase difference plate; 23. Polarizer; 24. Drive shell; 25. Partition; 26. Power supply module; 27. Connecting seat; 28. Power cord; 29. ​​Support column; 30. Circuit board; 31. Fixing hole; 32. Drive module; 33. Control chip; 34. Feedback module. DETAILED DESCRIPTION

[0035] The present invention will be further described and explained below in conjunction with specific embodiments and accompanying drawings:

[0036] See also Figure 1-5 The present invention provides an LCD backlight module, comprising a mounting structure 1, a protective structure 2 being mounted on the top of the mounting structure 1, a drive assembly 5 being mounted on the bottom of the mounting structure 1, a mounting frame 10 being mounted inside the drive module 3 and a lens assembly 4, a bottom plate 12 being mounted on the bottom of the mounting frame 10, a heat sink 13 being embedded and mounted on the surface of the bottom plate 12, the large-area heat sink 13 being able to improve the heat dissipation effect of the LCD backlight module, a sealing ring 14 being fixed on the top of the mounting frame 10, the sealing ring 14 being used to improve the sealing performance of the LCD backlight module,

[0037] The driving module 3 includes a backlight panel 15. The components in the driving module 3 can improve the stability of the LCD backlight module. The top of the backlight panel 15 is installed with LCD16, the top of LCD16 is installed with a polarizing plate 17, the top of the polarizing plate 17 is installed with a substrate 18, and the top of the substrate 18 is installed with a diffuser 19. The lens assembly 4 includes an upper glass 20. The lens assembly 4 can improve the driving module 3 to protect and change the light, and at the same time improve the display quality when the LCD backlight module is in use. The upper glass 20 is located on the top of the diffuser 19. A scattering film 21 is installed on the top of the upper glass 20. A phase difference plate 22 is provided on the top of the scattering film 21, and a polarizer 23 is provided on the top of the phase difference plate 22.

[0038] As a preferred solution, the protective structure 2 includes a protective frame 6, a glass plate 7 is installed inside the protective frame 6, and a sealing gasket 8 is installed between the glass plate 7 and the protective frame 6. The sealing gasket 8 can prevent rainwater from entering the LCD backlight module. The mounting column 9 is passed through the mounting hole 11 and then fixed by bolts to improve the stability of the LCD backlight module assembly. The mounting column 9 is installed at the bottom of the protective frame 6, and the top of the mounting frame 10 is provided with a mounting hole 11.

[0039] As a preferred solution, the driving component 5 includes a driving shell 24, a circuit board 30 is installed inside the driving shell 24, a driving module 32 is welded on the top of the circuit board 30, a partition 25 is installed inside the driving shell 24, and a power supply module 26 is installed inside the driving shell 24. The power supply module 26 can stably supply power to the control chip 33, the driving module 32 and the feedback module 34, thereby improving the stability of the driving component 5 and the power supply to the LCD backlight module. A connecting seat 27 is installed on one side of the driving shell 24, a power line 28 is installed on one side of the connecting seat 27, a support column 29 is installed inside the driving shell 24, and a circuit board 30 is fixedly mounted on the support column 29, a fixing hole 31 is opened on the top of the circuit board 30, and a control chip 33 is welded on the top of the circuit board 30. The LCD backlight module is driven by the cooperation of the control chip 33 and the driving module 32, which is convenient for the user to drive the LCD backlight module and improves the convenience of driving the LCD backlight module. A feedback module 34 is welded on the top of the circuit board 30, and the feedback module 34 can provide real-time feedback on the usage status of the LCD backlight module. The feedback module 34 can provide real-time feedback on the usage status of the LCD backlight module, which is convenient for the driving module 32 to adjust the working status of the LCD backlight module in time.

[0040] A method for driving an LCD backlight module comprises the following steps:

[0041] S1. Power supply: Connect the power cord 28 to the power supply mechanism to power the LCD backlight module, and then provide stable power to the circuit board 30 through the power supply module 26;

[0042] S2, control: the control chip 33 controls the driving module 32 and the LCD backlight module;

[0043] S3, driving: the driving module 32 drives and controls the LCD backlight module;

[0044] S4. Feedback: The feedback module 34 is used to feed back the working status of the LCD backlight module to the control chip 33, and then the control chip 33 adjusts the working status of the LCD backlight module.

[0045] The working principle of the present invention is as follows: the power line 28 is energized, and then the power supply module 26 is used to stably supply power to the control chip 33, the driving module 32 and the feedback module 34, thereby improving the stability of the driving component 5 and the power supply to the LCD backlight module. The large-area heat dissipation plate 13 is used to improve the heat dissipation effect of the LCD backlight module. The sealing ring 14 improves the sealing of the LCD backlight module and cooperates with the sealing gasket 8 to prevent rainwater from entering the LCD backlight module. The mounting column 9 is used to pass through the mounting hole 11 and then fixed by bolts to improve the stability of the LCD backlight module assembly. The components in the driving module 3 improve the LCD backlight module. The stability of the source module is improved, the lens component 4 used improves the driving module 3 to protect and change the light, and at the same time improves the display quality when the LCD backlight module is used. The feedback module 34 used can provide real-time feedback on the use status of the LCD backlight module, and then the control chip 33 and the driving module 32 cooperate to drive the LCD backlight module, which is convenient for the user to drive the LCD backlight module and improves the convenience of driving the LCD backlight module. At the same time, the feedback module 34 used can provide real-time feedback on the use status of the LCD backlight module, which is convenient for the driving module 32 to adjust the working status of the LCD backlight module in time. After use, you only need to turn off the power.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An LCD backlight module, comprising a mounting structure (1), characterized in that: The top of the mounting structure (1) is installed with a protective structure (2), the bottom of the mounting structure (1) is installed with a driving assembly (5), the mounting structure (1) includes a mounting frame (10), the interior of the mounting frame (10) is installed with a driving module (3) and a lens assembly (4), the bottom of the mounting frame (10) is installed with a base plate (12), the surface of the base plate (12) is embedded with a heat dissipation plate (13), the top of the mounting frame (10) is fixed with a sealing ring (14), the driving module (3) includes a backlight plate (15), the top of the backlight plate (15) is installed with an LCD (16), the top of the LCD (16) is installed with a polarizing plate (17), the top of the polarizing plate (17) is installed with a substrate (18), the top of the substrate (18) is installed with a diffusion sheet (19), the driving assembly (5) includes a driving shell (24), the interior of the driving shell (24) is installed with a circuit board (30), and the top of the circuit board (30) is welded with a driving module (32).

2. The LCD backlight module according to claim 1, wherein: The protective structure (2) comprises a protective frame (6), a glass plate (7) is installed inside the protective frame (6), and a sealing gasket (8) is installed between the glass plate (7) and the protective frame (6).

3. The LCD backlight module according to claim 2, wherein: A mounting column (9) is installed at the bottom of the protective frame (6), and a mounting hole (11) is opened at the top of the mounting frame (10).

4. The LCD backlight module according to claim 1, wherein: The lens assembly (4) comprises an upper glass (20), the upper glass (20) is located on the top of the diffusion sheet (19), and a scattering film (21) is installed on the top of the upper glass (20).

5. The LCD backlight module according to claim 4, wherein: A phase difference plate (22) is provided on the top of the scattering film (21), and a polarizer (23) is provided on the top of the phase difference plate (22).

6. The LCD backlight module according to claim 1, wherein: A partition (25) is installed inside the drive housing (24), and a power supply module (26) is installed inside the drive housing (24).

7. The LCD backlight module according to claim 1, wherein: A connecting seat (27) is installed on one side of the drive housing (24), and a power line (28) is installed on one side of the connecting seat (27).

8. The LCD backlight module according to claim 1, wherein: A support column (29) is installed inside the drive housing (24), the circuit board (30) is fixedly installed on the support column (29), and a fixing hole (31) is opened on the top of the circuit board (30).

9. The LCD backlight module according to claim 1, wherein: A control chip (33) is welded on the top of the circuit board (30), and a feedback module (34) is welded on the top of the circuit board (30).

10. A method for driving an LCD backlight module, characterized in that: The following steps are involved: S1, power supply: connect the power line (28) to the power supply mechanism to supply power to the LCD backlight module, and then provide stable power to the circuit board (30) through the power supply module (26); S2, control: the control chip (33) is used to control the driving module (32) and the LCD backlight module; S3, driving: the driving module (32) drives and controls the LCD backlight module; S4. Feedback: The feedback module (34) is used to feed back the working state of the LCD backlight module to the control chip (33), and then the working state of the LCD backlight module is adjusted by the control chip (33).

Images