CN-121995670-A - Novel NB liquid crystal display module backlight structure

CN121995670ACN 121995670 ACN121995670 ACN 121995670ACN-121995670-A

Abstract

The invention discloses a novel backlight structure of an NB (node b) liquid crystal display screen module, which comprises an integrated frame of rubber iron, a lamp strip, a reflecting film, a light guide plate, a diffusion film, a lower light enhancement film, an upper light enhancement film and a shading adhesive tape, wherein the reflecting film is arranged on the inner bottom wall of the integrated frame of rubber iron, the light guide plate is arranged at the upper end part of the reflecting film, the lamp strip is arranged at one side of the light guide plate, a plurality of LED lamp beads are arranged at intervals at the upper end part of the lamp strip, an FPC (flexible printed circuit) circuit board is arranged on the lamp strip, one end of the FPC circuit board extends out of the integrated frame of rubber iron, the LED lamp beads are all in butt joint with the side wall of the light guide plate, the diffusion film, the lower light enhancement film and the upper light enhancement film are sequentially arranged at the upper end part of the light guide plate from bottom to top, and the shading adhesive tape is adhered to the periphery of the upper end part of the integrated frame of rubber iron. The technical scheme of the invention can realize full-automatic assembly production of products, reduce defects caused by manual material removal, reduce the number of the iron frame die openings, reduce the cost and effectively avoid the sequential reverse assembly of the film materials.

Inventors

HUANG YOUMING
CHEN YOUNAN

Assignees

东莞瀚邦为光电科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260317

Claims (10)

1. The utility model provides a novel NB LCD screen module backlight structure, its characterized in that, including integrative frame of glued iron, lamp strip, reflectance coating, light guide plate, diffusion membrane, lower brightness enhancement film, go up brightness enhancement film and shading sticky tape, the reflectance coating set up in on the interior diapire of integrative frame of glued iron, the light guide plate set up in the upper end of reflectance coating, the lamp strip set up in one side of light guide plate, the upper end of lamp strip is equipped with a plurality of LED lamp pearls with the interval, the lamp strip is equipped with the FPC circuit board, the one end of FPC circuit board stretches out the integrative frame of glued iron sets up outward, LED lamp pearl all with the lateral wall butt of light guide plate, diffusion membrane, lower brightness enhancement film and last brightness enhancement film follow supreme set gradually down in the upper end of light guide plate, shading sticky tape bond in around the upper end of the integrative frame of glued iron, just shading sticky tape is located go up the outside of brightness enhancement film with the top of the gap between the inside wall of the integrative frame of glued iron.
2. The novel NB liquid crystal display module backlight structure as in claim 1, further comprising a first double sided adhesive tape adhered to one side of the inner bottom wall of the integral frame of glue iron, the light bar being adhered to the first double sided adhesive tape.
3. The novel NB liquid crystal display module backlight structure according to claim 1, further comprising a second double sided adhesive tape, wherein the second double sided adhesive tape is adhered to the other side of the inner bottom wall of the integrated frame of the rubber iron, a limiting step is disposed on the inner side of the second double sided adhesive tape, the reflective film is adhered to the limiting step, and two sides of the light guide plate are fixedly connected with the upper end wall of the light bar and the upper end wall of the second double sided adhesive tape respectively.
4. The backlight module structure of claim 3, further comprising a third double sided adhesive tape, wherein the third double sided adhesive tape is adhered to the upper end wall of the light bar, and two sides of the light guide plate are adhered to the second double sided adhesive tape and the third double sided adhesive tape respectively.
5. The novel NB liquid crystal display module backlight structure according to claim 1, wherein two side walls of the diffusion film are respectively provided with two first positioning flanges and two second positioning flanges, the inner side wall of the integrated frame of the rubber iron is provided with a first positioning groove and a second positioning groove corresponding to the first positioning flanges and the second positioning flanges one by one, and the first positioning flanges and the second positioning flanges are respectively detachably embedded in the first positioning groove and the second positioning groove.
6. The novel NB liquid crystal display module backlight structure according to claim 1, wherein two side walls of the lower brightness enhancement film are respectively provided with two third positioning flanges and two fourth positioning flanges, the inner side wall of the integrated frame of the rubber iron is provided with a third positioning groove and a fourth positioning groove corresponding to the third positioning flanges and the fourth positioning flanges one to one, and the third positioning flanges and the fourth positioning flanges are respectively detachably embedded in the third positioning groove and the fourth positioning groove.
7. The novel NB liquid crystal display module backlight structure according to claim 1, wherein two side walls of the upper brightness enhancement film are respectively provided with two fifth positioning flanges and a sixth positioning flange, the inner side wall of the integrated frame of the rubber iron is provided with a fifth positioning groove and a sixth positioning groove corresponding to the fifth positioning flanges and the sixth positioning flanges one by one, and the fifth positioning flanges and the sixth positioning flanges are respectively detachably embedded in the fifth positioning groove and the sixth positioning groove.
8. The backlight structure of claim 1, wherein a black silk screen layer is disposed on one side of the lower end wall of the diffusion film, and the black silk screen layer is disposed above the light bar.
9. The backlight structure of claim 1, wherein a heat sink is provided at a lower end wall of the integrated frame.
10. The backlight structure of claim 1, wherein a plurality of fixing plates are arranged on the side wall of the integrated frame of the rubber iron, and a screw hole is respectively arranged on each fixing plate.

Description

Novel NB liquid crystal display module backlight structure Technical Field The invention relates to the technical field of NB (NB) liquid crystal display screens, in particular to a novel NB liquid crystal display screen module backlight structure. Background Normally Black Liquid Crystal Display (LCD) panels, namely normal Black, are mainly used in high-end display devices. When no voltage is applied, the liquid crystal display screen is opaque and displays a black picture. When a voltage is applied, the liquid crystal transmits light and displays a bright screen. The normally black liquid crystal display screen is mainly applied to application scenes with black matrixes. The normally black liquid crystal display has the characteristics of high contrast, bright color, strong dynamic picture expressive force and the like. The display is black when no voltage is applied, so that deeper black and higher contrast can be presented, and the picture is more distinct in gradation and stronger in stereoscopic impression. Meanwhile, the normally black liquid crystal display screen has advantages in the aspect of dynamic picture expression, and can reduce the phenomena of smear and blurring, so that the dynamic picture is smoother and clearer. The normally black liquid crystal display screen is mainly applied to high-end display equipment with high requirements on display effect, such as professional displays, high-end televisions and the like. These devices need to exhibit a more realistic and fine picture effect to meet the needs of professional users or high-end consumers. In addition, in some special application scenarios, such as devices used at night or in low light environments, a normally black liquid crystal display can also provide a better use experience. Along with the increasing demands of notebook use, the demands of display screens are also increasing, and the application fields are also increasing. However, the NB display backlight structure currently existing on the market has the following problems: 1. The full-automatic assembly cannot be realized, the lamp strip, the light guide plate and the reflecting membrane are required to be assembled manually, the light guide plate is required to be inserted into the rubber iron U in an inclined manner, the light guide plate and the rubber iron are required to be inserted into the rubber iron in an inclined manner in an artificial alignment manner, so that the light guide plate is polluted and scratched, and the backlight yield is low; 2. The height of the U-shaped folding of the rubber iron mold is difficult to control, the phenomenon of small or large size of the U-shaped folding easily occurs in the production process, the bright line of a lamp eye can appear in the display effect due to the large size, the light guide plate cannot be assembled, the light guide plate is scratched, and the product rejection rate is high; 3. The cost of the rubber iron mould is high, and the product can be finished only by 6-7 iron frame moulds. Disclosure of Invention The invention mainly aims to provide a novel NB (node B) liquid crystal display module backlight structure, and aims to solve the problems in the background art. In order to achieve the above object, the novel NB liquid crystal display module backlight structure provided by the invention comprises an integrated frame of rubber, a light bar, a reflecting film, a light guide plate, a diffusion film, a lower brightness enhancement film, an upper brightness enhancement film and a shading tape, wherein the reflecting film is arranged on the inner bottom wall of the integrated frame of rubber, the light guide plate is arranged at the upper end of the reflecting film, the light bar is arranged at one side of the light guide plate, a plurality of LED light beads are arranged at intervals at the upper end of the light bar, the light bar is provided with an FPC circuit board, one end of the FPC circuit board extends out of the integrated frame of rubber, the LED light beads are all in butt joint with the side wall of the light guide plate, the diffusion film, the lower brightness enhancement film and the upper brightness enhancement film are sequentially arranged at the upper end of the light guide plate from bottom to top, the shading tape is adhered to the periphery of the upper end of the integrated frame of rubber, and the shading tape is positioned above a gap between the outer side of the upper brightness enhancement film and the inner side wall of the integrated frame of rubber. Optionally, the LED lamp further comprises a first double-sided adhesive tape, wherein the first double-sided adhesive tape is adhered to one side of the inner bottom wall of the integrated frame of the rubber iron, and the lamp strip is adhered to the first double-sided adhesive tape. Optionally, the LED lamp further comprises a second double faced adhesive tape, the second double faced adhesive tape is adhered to the other side of the