Structure for eliminating squeal of module

Abstract

The utility model discloses a structure for eliminating module howling, which comprises a display screen and a backlight, the display screen and the backlight are fixed in an attached manner, a film material body and a light guide part are arranged between the display screen and the backlight, the film material body comprises a plurality of film layers, the plurality of film layers and the light guide part are respectively provided with positive charges or negative charges, and the positive charges or the negative charges are electrically connected with the display screen. Therefore, the whole of the membrane material body and the light guide part is not charged. The structure has the effect that the whole film material body and the whole light guide plate are not charged, so that howling caused by vibration due to periodic electrical change of the display module is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a structure for eliminating the howling of a module. Background Art

[0002] A display module generally includes a cover plate, a display screen and a backlight. There is a fixed-frequency Touchscan on the display screen panel. The back of the backlight is an iron frame. The display screen panel and the backlight iron frame are two conductive planes, thus forming a capacitive structure. There is air and a film material as a medium between the backlight iron frame and the display screen. The film material itself has static electricity. Therefore, when there is a periodic electrical change, it may cause the film material inside the display module to vibrate periodically, thus generating howling. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a structure for eliminating the howling of a module.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A structure for eliminating the howling of a module, comprising: a display screen and a backlight, the display screen is fixedly attached to the backlight, a film material body and a light guide are arranged between the display screen and the backlight, the film material body includes a plurality of film layers, and the plurality of film layers and the light guide respectively carry positive charges or negative charges, so that the whole of the film material body and the light guide does not carry charges.

[0006] In one embodiment, the back of the backlight is an iron frame, the film material body and the light guide are both located inside the iron frame, and a glue frame is further arranged on the inner side of the iron frame.

[0007] In one embodiment, the film layers in the film material body are, from top to bottom, an upper brightness enhancement film, a lower brightness enhancement film and a diffusion film, and the light guide is located below the diffusion film.

[0008] In one embodiment, the light guide is a light guide plate.

[0009] In one embodiment, the upper brightness enhancement film carries a positive charge, the lower brightness enhancement film carries a negative charge, the diffusion film carries a positive charge, and the light guide plate carries a negative charge.

[0010] In one embodiment, the positive charges and negative charges between the film material body and the light guide plate neutralize each other, so that the whole of the film material body and the light guide plate does not carry charges.

[0011] In one embodiment, a reflector is arranged below the light guide plate, and the reflector does not carry charges.

[0012] In one embodiment, each film layer of the film body and the light guide plate are both charged with positive or negative charges through an electrostatic reverser.

[0013] In one embodiment, a foam for buffering is provided between the display screen and the backlight, and the foam frame is pasted to the upper end surface of the backlight.

[0014] In one embodiment, a light-shielding adhesive is further provided between the display screen and the backlight, and the light-shielding adhesive is arranged along the circumferential direction of the periphery of the display screen.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] A structure for eliminating the howling of a module of the present utility model makes the film body and the light guide plate respectively carry positive or negative charges, so that the whole of the film body and the light guide plate is not charged, so that the film body and the light guide plate will not be affected by the periodic electrical change of the module, and vibration will not occur inside, thereby improving the problem of howling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic cross-sectional structure diagram of a structure for eliminating the howling of a module provided by the present utility model.

[0019] BRIEF DESCRIPTION OF THE DRAWINGS: 10. Display screen; 20. Backlight; 21. Iron frame; 22. Adhesive frame; 30. Film body; 31. Upper brightness enhancement film; 32. Lower brightness enhancement film; 33. Diffusion film; 40. Light guide plate; 50. Reflective sheet; 60. Foam; 70. Light-shielding adhesive. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0021] A structure for eliminating the howling of a module, refer to Figure 1 , including a display screen 10 and a backlight 20, and the display screen 10 and the backlight 20 are fixedly attached.

[0022] Refer to Figure 1, a film material body 30 and a light guide member are provided between the display screen 10 and the backlight 20. The display screen 10 and the backlight 20 form a display module. The back surface of the backlight 20 is an iron frame 21. The film material body 30 and the light guide member are both located within the iron frame 21, and the upper end surface of the iron frame 21 is fixedly attached to the display screen 10. A capacitive structure is formed between the display screen 10 and the backlight 20. Among them, the panel in the display screen 10 and the iron frame 21 of the backlight 20 respectively form the upper and lower substrates of the capacitor, and the film material body 30 and the light guide member between the display screen 10 and the backlight 20 form the dielectric material of the capacitor. The panel of the display screen 10 has a fixed periodic signal, and this periodic signal will charge and discharge this capacitive structure.

[0023] Referring to Figure 1 , because the film material body 30 and the light guide member itself carry static electricity, when there is a fixed periodic electrical change in the panel of the display screen 10, periodic vibrations will occur inside the film material body 30 and generate a whistling sound. Therefore, the entire film material body 30 and the light guide member in this embodiment are not charged. The film material body 30 includes multiple film layers, and the multiple film layers and the light guide member respectively carry positive charges or negative charges, so that the overall film material body 30 and the light guide member are not charged, so that the film material body 30 will not be affected by the periodic electrical changes of the display module, and no vibrations will occur inside to improve the problem of whistling.

[0024] Further, referring to Figure 1 , the iron frame 21 of the backlight 20 is arranged in a C shape upwards, and the film material body 30 and the light guide member are located within the iron frame 21. A rubber frame 22 is also arranged inside the iron frame 21. The rubber frame 22 is arranged on the inner side of the iron frame 21, and the rubber frame 22 is arranged in a mouth shape.

[0025] Referring to Figure 1 , the film layers of the film material body 30 are, from top to bottom, an upper brightness enhancement film 31, a lower brightness enhancement film 32, and a diffusion film 33. The upper brightness enhancement film 31, the lower brightness enhancement film 32, and the diffusion film 33 are stacked in sequence. The light guide member is located below the diffusion film 33, that is, the light guide member is located on the side of the diffusion film 33 away from the lower brightness enhancement film 32.

[0026] Referring to Figure 1 , the light guide member is a light guide plate 40. The light guide plate 40 is used to guide the light in the backlight 20 into the display screen 10, so that the display screen 10 displays various color display pictures.

[0027] Further, referring to Figure 1 , the upper brightness enhancement film 31 carries a positive charge, the lower brightness enhancement film 32 carries a negative charge, the diffusion film 33 carries a positive charge, and the light guide plate 40 carries a negative charge.

[0028] Referring to Figure 1, the positive and negative charges between each film layer and the light guide plate 40 neutralize each other, so that the entire film material body 30 and the light guide plate 40 are not charged, thus not being affected by the electrical signals of the display module and not vibrating internally to generate a howling sound.

[0029] Referring to Figure 1 , a reflector 50 is provided below the light guide plate 40. The reflector 50 and the film material body 30 are respectively arranged on opposite sides of the light guide plate 40, and the reflector 50 is not charged.

[0030] Furthermore, referring to Figure 1 , in this embodiment, when the film material body 30 and the light guide plate 40 are assembled in the backlight 20, an electrostatic reverser is used to reduce the charges carried by the film material body 30 itself, and a certain amount of positive and negative charges are evenly added to each film layer and the light guide plate 40.

[0031] Furthermore, referring to Figure 1 , a foam 60 for buffering is provided between the display screen 10 and the backlight 20. The foam 60 is frame-mounted on the upper end surface of the backlight 20. The foam 60 is arranged in an "O" shape and is used to buffer between the display screen 10 and the backlight 20.

[0032] Referring to Figure 1 , a light-shielding adhesive 70 is also provided between the display screen 10 and the backlight 20. The light-shielding adhesive 70 is located below the foam 60 and is arranged along the circumferential direction of the outer periphery of the display screen 10. The light-shielding adhesive 70 is used to block the light leaking from the outer edges of the display screen 10 and the backlight 20 to avoid the phenomenon of light leakage of the display screen 10.

[0033] The structure for improving the howling of the module makes the film material body 30 and the light guide plate 40 respectively carry positive or negative charges, so that the entire film material body 30 and the light guide plate 40 are not charged, so that the film material body 30 and the light guide plate 40 are not affected by the periodic electrical changes of the module and do not vibrate internally to improve the problem of howling.

[0034] The above-described embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A structure for eliminating the howling of a module, characterized in that, Including: A display screen (10) and a backlight (20), the display screen (10) is fixedly attached to the backlight (20), a film material body (30) and a light guide member are provided between the display screen (10) and the backlight (20), the film material body (30) includes a plurality of film layers, and the plurality of film layers and the light guide member are respectively charged with positive charges or negative charges, so that the whole of the film material body (30) and the light guide member is not charged.

2. The structure for eliminating the howling of the module according to claim 1, wherein The back surface of the backlight (20) is an iron frame (21), the film material body (30) and the light guide member are both located within the iron frame (21), and a rubber frame (22) is further provided on the inner side of the iron frame (21).

3. The structure for eliminating the howling of the module according to claim 2, characterized in that, The film layers within the film material body (30) are, from top to bottom in sequence, an upper brightness enhancement film (31), a lower brightness enhancement film (32), and a diffusion film (33), and the light guide member is located below the diffusion film (33).

4. The structure for eliminating the howling of the module according to claim 3, characterized in that, The light guide member is a light guide plate (40).

5. The structure for eliminating the howling of the module according to claim 4, characterized in that, The upper brightness enhancement film (31) is charged with a positive charge, the lower brightness enhancement film (32) is charged with a negative charge, the diffusion film (33) is charged with a positive charge, and the light guide plate (40) is charged with a negative charge.

6. The structure for eliminating the howling of the module according to claim 5, characterized in that, The positive charges and negative charges between the film material body (30) and the light guide plate (40) neutralize each other, so that the whole of the film material body (30) and the light guide plate (40) is not charged.

7. The structure for eliminating the howling of the module according to claim 6, characterized in that, A reflector (50) is provided below the light guide plate (40), and the reflector (50) is not charged.

8. The structure for eliminating the howling of the module according to claim 7, characterized in that, Each film layer of the film material body (30) and the light guide plate (40) are both charged with positive charges or negative charges through an electrostatic reverser.

9. The structure for eliminating the howling of the module according to claim 1, wherein, A foam (60) for buffering is provided between the display screen (10) and the backlight (20), and the foam (60) is frame-attached to the upper end surface of the backlight (20).

10. A structure for eliminating the howling of a module, as claimed in claim 9, wherein A light-shielding adhesive (70) for light shielding is further provided between the display screen (10) and the backlight (20), and the light-shielding adhesive (70) is arranged along the circumferential direction of the periphery of the display screen (10).

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