Assembly method of display screen

Abstract

The invention discloses an assembling method of a display screen, which comprises the following steps: step S10, placing a reflecting film in a mounting bracket, and then placing a light guide plate above the reflecting film; s20, a lamp strip is inserted into a lamp strip mounting groove of the mounting support, and lamp beads on the lamp strip are located under a bottom groove in the light guide plate; s30, the diffusion film and the display panel with the flat cable welded to the PCB are sequentially placed above the light guide plate; s40, the PCB is pasted to a preset position of the mounting bracket, and then the iron shell is connected to the mounting bracket; and step S50, welding the PCB with the wiring end on the light bar and the shell pin on the iron shell to complete the assembly of the display screen. The method has the beneficial effects that multiple assembly processes are omitted, particularly, the link that five parts need to be glued or fixed through manual dispensing in the traditional process is eliminated, the single-piece assembly time is shortened by 30%, and meanwhile the problem of yield loss caused by glue volatilization is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and in particular to an assembling method of a display screen. Background Art

[0002] The display structure consists of an upper and lower metal frame, with the display panel and backlight module located within the space between the two frames. The backlight module includes components such as a plastic frame, a light guide plate, a reflective film, and a circuit board equipped with LED backlights.

[0003] The following technical problems exist in the prior art: 1. The plastic frame in the backlight module makes the entire display thicker; 2. Gluing or dispensing is required, resulting in many steps and low efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a display screen assembly method, which can reduce the thickness of the entire display screen, shorten the entire assembly process, and improve assembly efficiency by eliminating the use of a plastic frame and eliminating gluing or dispensing.

[0005] To solve the above technical problems, the present invention adopts a technical solution: a method for assembling a display screen, comprising the following steps: Step S10: placing the reflective film in the mounting bracket, and then placing the light guide plate on top of the reflective film; Step S20: insert the light bar into the light bar mounting groove of the mounting bracket, with the light beads on the light bar located directly below the bottom groove in the light guide plate; Step S30: placing the display panel with the diffusion film and the cable already soldered to the PCB on top of the light guide plate in sequence; Step S40: Paste the PCB board to the preset position of the mounting bracket, and then connect the iron shell to the mounting bracket; Step S50: Weld the PCB board to the terminals on the light bar and the shell feet on the iron shell to complete the assembly of the display screen.

[0006] Furthermore, in step S10, the protective film on the reflective film is removed and placed in a mounting bracket with the side without the protective film facing the outside of the mounting bracket; then the light guide plate is placed above the reflective film with the side with the dots facing the reflective film.

[0007] Furthermore, in step S20, when the light bar is inserted into the light bar mounting groove of the mounting bracket, the wiring terminal passes through the bar-shaped hole on the mounting bracket.

[0008] Furthermore, in step S30, the diffusion film, the light-shielding paper, and the display panel on which the cables have been soldered to the PCB are sequentially placed above the light guide plate.

[0009] Furthermore, in step S40, when the PCB board is pasted to the preset position of the mounting bracket, the terminal on the light bar passes through the first conductive hole on the PCB board; when the iron shell is connected to the mounting bracket, the shell feet on the iron shell pass through the second conductive hole on the PCB board.

[0010] Furthermore, a first mounting groove, a second mounting groove located outside the first mounting groove, and a wiring groove for the display panel wiring to pass through are provided on the mounting bracket. The light strip mounting groove is located at the bottom of the first mounting groove, the wiring groove is located outside the light strip mounting groove, the reflective film, the light guide plate and the diffusion film are all located in the first mounting groove, and the display panel is located in the second mounting groove.

[0011] Furthermore, a placement groove for placing the diffusion film is provided on the light guide plate.

[0012] Furthermore, a positioning column for positioning the PCB board is provided on the mounting bracket.

[0013] Furthermore, the iron shell is connected to the mounting bracket through a snap-fit ​​structure.

[0014] Furthermore, multiple groups of snap-fit ​​structures are provided along the periphery of the mounting bracket.

[0015] The beneficial effects of the present invention are: 1. The light guide plate, diffusion film and other parts in the backlight assembly are directly installed in the mounting cavity of the mounting bracket through the snap-fit ​​positioning between the mounting bracket and the iron shell, eliminating multiple assembly processes, especially eliminating the five links in the traditional process that require gluing or manual glue fixation, shortening the single-piece assembly time by 30%, and avoiding the yield loss problem caused by glue volatilization; 2. By eliminating the existing plastic frame, the thickness of the entire display screen can be reduced by 1.2 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a schematic diagram of the front structure of the display screen of the present invention; Figure 2 2 is a schematic diagram of the back structure of the display screen of the present invention; Figure 3 This is a schematic diagram of the installation of the display screen of the present invention; Figure 4 It is a structural schematic diagram of the mounting bracket in the display screen of the present invention.

[0017] In the accompanying drawings, 1. Mounting bracket, 1-1. Light strip mounting groove, 1-2. First mounting groove, 1-3. Second mounting groove, 1-4. Strip hole, 1-5. Wiring groove, 2. Iron shell, 2-1. Shell foot, 3. Display panel, 3-1. Cable, 4. Light strip, 4-1. Wiring terminal, 5. Reflective film, 6. Light guide plate, 6-1. Bottom groove, 6-2. Placement groove, 7. Diffusion film, 8. Snap-on structure, 9. PCB board, 9-1. First conduction hole, 9-2. Second conduction hole, 10. Positioning column, 11. Shading paper. DETAILED DESCRIPTION

[0018] See attached Figure 1-4 The present invention provides a display screen comprising a mounting bracket 1 and an iron shell 2 connected to the mounting bracket 1 to form a mounting cavity. A backlight module and a display panel 3 are disposed within the mounting cavity. The mounting bracket 1 and the iron shell 2 are connected by snap-fit ​​structures 8. Multiple sets of snap-fit ​​structures 8 are provided along the periphery of the mounting bracket 1. In this embodiment, two sets of snap-fit ​​structures 8 are provided on each side of the mounting bracket 1 to ensure a stable connection between the two.

[0019] See attached Figure 2-4 In order to eliminate the need for a plastic frame and ensure that the components in the backlight assembly are stably arranged, a first mounting groove 1-2, a light bar mounting groove 1-1 located at the bottom of the first mounting groove 1-2, and a second mounting groove 1-3 located outside the first mounting groove 1-2 and used to mount the display panel 3 are provided on the mounting bracket 1.

[0020] The backlight module includes a light bar 4 positioned within light bar mounting slot 1-1, a reflective film 5, a light guide plate 6, and a diffuser film 7 positioned within first mounting slot 1-2 and sequentially arranged between first mounting slot 1-2 and display panel 3 of mounting bracket 1. Light guide plate 6 has a bottom groove 6-1 for accommodating the lamps on light bar 4. After installation, the lamps on light bar 4 face the bottom of bottom groove 6-1, ensuring optimal backlighting.

[0021] A PCB board 9 matching the light bar 4 and the display panel 3 is provided on the outside of the mounting bracket 1. A positioning column 10 for positioning the PCB board 9 is provided on the mounting bracket 1. The PCB board 9 is adhered to the mounting bracket 1 by double-sided tape. A strip hole 1-4 communicating with the light bar mounting groove 1-1 is provided on the mounting bracket 1. The terminal 4-1 of the light bar 4 is electrically connected to the PCB board 9 through the strip hole 1-4. A wiring groove 1-5 for the display panel 3 to pass through is provided on the mounting bracket 1. The cable 3-1 of the display panel 3 is electrically connected to the PCB board 9 through the wiring groove 1-5. In addition, a first conductive hole 9-1 and a second conductive hole 9-2 matching the terminal 4-1 and the shell foot 2-1 on the iron shell 1 are provided on the PCB board 9. The electrical connection between the PCB board 9 and the terminal 4-1 and the shell foot 2-1 is achieved by welding.

[0022] A light-shielding paper 11 may be provided between the diffusion film 7 and the display panel 3 to ensure that the backlight shines onto the display panel 3 through a preset position. The light-shielding paper 11 is located in the second mounting groove 1-3.

[0023] In order to facilitate accurate placement of the diffusion film 7 , a placement groove 6 - 2 for placing the diffusion film 7 is provided on the light guide plate 6 .

[0024] After the display panel 3 is placed in the second mounting groove 1-3, its bottom is located above the light bar 4. Therefore, a groove is also provided on the light bar 4 for the display panel 3 cable 3-1 to pass through.

[0025] The mounting bracket 1 is injection-molded from a composite resin material, and its light-shielding performance reaches a light transmittance of less than 0.01%. An existing metal / plastic composite light-shielding sheet can also be used.

[0026] Based on the above display screen, the assembly method of the present invention includes the following steps.

[0027] Step S10 : placing the reflective film 5 in the mounting bracket 1 , and then placing the light guide plate 6 on top of the reflective film 5 .

[0028] In step S10, the protective film on the reflective film 5 is removed and placed in the first mounting groove 1-2 in the mounting bracket 1 with the side with the protective film removed facing the outside of the mounting bracket 1; then the light guide plate 6 is placed above the reflective film 5 with the side with the dots on the light guide plate 6 facing the reflective film 5.

[0029] Step S20 , insert the light bar 4 into the light bar mounting groove 1 - 2 of the mounting bracket 1 , and the lamp beads on the light bar 4 are located directly below the bottom groove 6 - 1 in the light guide plate 6 .

[0030] In step S20 , when the light bar 4 is inserted into the light bar mounting groove 1 - 2 of the mounting bracket 1 , the connection terminal 4 - 1 passes through the strip-shaped hole 1 - 4 on the mounting bracket 1 .

[0031] Step S30 : placing the display panel 3 , on which the diffusion film 7 and the flat cable 3 - 1 have been soldered to the PCB 9 , on top of the light guide plate 6 in sequence.

[0032] In another embodiment, a light-shielding paper 11 is further provided. Therefore, in this step, the diffusion film 7 , the light-shielding paper 11 and the display panel 3 with the cable 3 - 1 already soldered to the PCB board 9 are sequentially placed above the light guide plate 6 .

[0033] Step S40 , pasting the PCB board 9 to a preset position of the mounting bracket 1 , and then connecting the iron shell 1 to the mounting bracket 1 through the snap-fit ​​structure 8 .

[0034] In step S40, when the PCB board 9 is attached to the preset position of the mounting bracket 1, the terminal 4-1 on the light bar 4 passes through the first conducting hole 9-1 on the PCB board 9; When the iron shell 1 is connected to the mounting bracket 1 , the shell feet 2 - 1 on the iron shell 1 pass through the second conducting holes 9 - 2 on the PCB board 9 .

[0035] Step S50: Weld the PCB board 9 to the connection terminals 4-1 on the light bar 4 and the shell feet 2-1 on the iron shell 2 to complete the assembly of the display screen.

[0036] After assembly is completed, apply high-temperature tape to the welding position of cable 3-1 in display panel 3, apply screen protection film to the front of the product, and apply easy-tear sticker to the upper right corner; finally, apply inkjet code to the back of the display before storage.

[0037] Finally, it is necessary to point out that the above content is only used to help understand the technical solution of the present invention and cannot be understood as limiting the scope of protection of the present invention; non-essential improvements and adjustments made by technical personnel in this field based on the above content of the present invention are all within the scope of protection required by the present invention.

Claims

1. A method for assembling a display screen, characterized in that: The following steps are involved: Step S10: placing the reflective film (5) in the mounting bracket (1), and then placing the light guide plate (6) above the reflective film (5); Step S20, inserting the light bar (4) into the light bar mounting groove (1-2) of the mounting bracket (1), wherein the light beads on the light bar (4) are located directly below the bottom groove (6-1) in the light guide plate (6); Step S30, placing the display panel (3) on which the diffusion film (7) and the flat cable (3-1) have been welded to the PCB board (9) in sequence above the light guide plate (6); Step S40: Paste the PCB board (9) to a preset position of the mounting bracket (1), and then connect the iron shell (1) to the mounting bracket (1); Step S50: Weld the PCB board (9) to the connection terminals (4-1) on the light bar (4) and the shell feet (2-1) on the iron shell (2), thereby completing the assembly of the display screen.

2. The assembly method according to claim 1, wherein: In step S10, the protective film on the reflective film (5) is removed and the reflective film (5) is placed in the mounting bracket (1) with the side from which the protective film is removed facing the outside of the mounting bracket (1); and the light guide plate (6) is then placed above the reflective film (5) with the side of the light guide plate (6) having the dots facing the reflective film (5).

3. The assembly method according to claim 1, wherein: In step S20, when the light bar (4) is inserted into the light bar mounting groove (1-2) of the mounting bracket (1), the wiring terminal (4-1) passes through the strip hole (1-4) on the mounting bracket (1).

4. The assembly method according to claim 1, wherein: In step S30, the display panel (3) on which the diffusion film (7), the light-shielding paper (11) and the flat cable (3-1) have been welded to the PCB board (9) is placed in sequence above the light guide plate (6).

5. The assembly method according to claim 1, characterized in that: In step S40, when the PCB board (9) is attached to a preset position of the mounting bracket (1), the connection terminal (4-1) on the light bar (4) passes through the first conducting hole (9-1) on the PCB board (9); When the iron shell (1) is connected to the mounting bracket (1), the shell foot (2-1) on the iron shell (1) passes through the second conducting hole (9-2) on the PCB board (9).

6. The assembly method according to any one of claims 1 to 5, characterized in that: A first mounting groove (1-2), a second mounting groove (1-3) located outside the first mounting groove (1-2), and a wiring groove (1-5) for the display panel (3) to pass through are provided on the mounting bracket (1); the light bar mounting groove (1-1) is located at the bottom of the first mounting groove (1-2); the wiring groove (1-5) is located outside the light bar mounting groove (1-1); the reflective film (5), the light guide plate (6), and the diffusion film (7) are all located in the first mounting groove (1-2); and the display panel (3) is located in the second mounting groove (1-3).

7. The assembly method according to any one of claims 1 to 5, characterized in that: A placement groove (6-2) for placing a diffusion film (7) is provided on the light guide plate (6).

8. The assembly method according to any one of claims 1 to 5, characterized in that: A positioning column (10) for positioning the PCB board (9) is provided on the mounting bracket (1).

9. The assembly method according to any one of claims 1 to 5, characterized in that: The iron shell (2) is connected to the mounting bracket (1) via a snap-fit ​​structure (8).

10. The assembly method according to claim 9, characterized in that: Multiple groups of snap-fit ​​structures (8) are arranged along the four sides of the mounting bracket (1).

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