Novel NB liquid crystal display screen module backlight structure

Abstract

The invention discloses a novel NB liquid crystal display screen module backlight structure which comprises a rubber-iron integrated frame, 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 adhesive tape, the reflecting film is arranged on the inner bottom wall of the rubber-iron integrated frame, the light guide plate is arranged at the upper end of the reflecting film, the light bar is arranged on one side of the light guide plate, and the light guide plate is arranged on the lower end of the light guide plate. A plurality of LED lamp beads are arranged at the upper end of the lamp strip at intervals, the lamp strip is provided with an FPC, one end of the FPC extends out of the rubber-iron integrated frame, the LED lamp beads abut against 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, and the shading adhesive tape adheres to the periphery of the upper end of the rubber-iron integrated frame. According to the technical scheme, full-automatic assembling production of products can be achieved, badness caused by manual contact with materials is reduced, the number of iron frame mold opening is reduced, cost is reduced, and the situation that the membrane materials are sequentially and reversely assembled can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of notebook LCD display technology, and in particular to a novel backlight structure for notebook LCD display modules. Background Technology

[0002] Normally Black (NB) LCD displays are primarily used in high-end display devices. When no voltage is applied, the liquid crystal is opaque, displaying a black image. When voltage is applied, the liquid crystal becomes transparent, displaying a bright image. Normally Black LCD displays are mainly used in applications where the screen background is black. They feature high contrast, vibrant colors, and strong dynamic image performance. Because they display black when no voltage is applied, they can present deeper blacks and higher contrast, resulting in more distinct layers and a stronger sense of depth. They also excel in dynamic image performance, reducing ghosting and blurring, making dynamic images smoother and clearer. Normally Black LCD displays are mainly used in high-end display devices with high display requirements, such as professional monitors and high-end televisions. These devices need to present more realistic and detailed image effects to meet the needs of professional users or high-end consumers. Furthermore, in special application scenarios, such as devices used at night or in low-light environments, Normally Black LCD displays can also provide a better user experience.

[0003] As the demand for laptops increases, so too does the demand for displays, and their applications are expanding. However, the backlight structures of existing laptop displays on the market currently suffer from the following problems:

[0004] 1. It cannot achieve fully automated assembly. It requires manual assembly of light strips, light guide plates and reflective films. The light guide plate needs to be manually inserted into the glue iron at an angle and folded. The light guide plate and the glue iron need to be manually aligned and inserted at an angle, which will cause the light guide plate to get dirty and scratched, resulting in low backlight yield. 2. The height of the U-bend in the plastic iron mold is difficult to control. During the production process, the U-bend size is prone to being too small or too large. If the size is too large, it will cause bright lines in the display effect. If the size is too small, the light guide plate will not be able to be assembled, the light guide plate will be scratched, and the product scrap rate will be high. 3. The cost of plastic iron molds is high, and 6-7 sets of iron frame molds are needed to complete the product. Summary of the Invention

[0005] The main objective of this invention is to propose a novel backlight structure for notebook LCD display modules, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention proposes a novel backlight structure for a notebook LCD display module, comprising an integrated frame, LED strips, a reflective film, a light guide plate, a diffuser film, a lower brightness enhancement film, an upper brightness enhancement film, and a light-shielding tape. The reflective film is disposed on the inner bottom wall of the integrated frame, the light guide plate is disposed at the upper end of the reflective film, the LED strip is disposed on one side of the light guide plate, and a plurality of LED beads are spaced apart at the upper end of the LED strip. The LED strip is provided with an FPC circuit board, one end of which extends out of the integrated frame. The LED beads are all in contact with the side wall of the light guide plate. The diffuser film, the lower brightness enhancement film, and the upper brightness enhancement film are sequentially disposed from bottom to top at the upper end of the light guide plate. The light-shielding tape is adhered to the perimeter of the upper end of the integrated frame, and the light-shielding tape is located above the gap between the outer side of the upper brightness enhancement film and the inner side wall of the integrated frame.

[0007] Optionally, it also includes a first double-sided adhesive, which is adhered to one side of the inner bottom wall of the integrated frame, and the light strip is adhered to the first double-sided adhesive.

[0008] Optionally, it also includes a second double-sided adhesive, which is bonded to the other side of the inner bottom wall of the integrated frame. A limiting step is provided on the inner side of the second double-sided adhesive, and the reflective film is bonded to the limiting step. The two sides of the light guide plate are respectively fixedly connected to the upper end wall of the lamp strip and the upper end wall of the second double-sided adhesive.

[0009] Optionally, it also includes a third double-sided adhesive, which is adhered to the upper wall of the light strip, and the two sides of the light guide plate are respectively adhered to the second double-sided adhesive and the third double-sided adhesive.

[0010] Optionally, the two side walls of the diffusion membrane are respectively provided with two first positioning flanges and two positioning flanges, and the inner side wall of the glue-iron integrated frame is provided with a first positioning groove and a second positioning groove that correspond one-to-one with the first positioning flange and the second positioning flange. The first positioning flange and the second positioning flange are respectively detachably embedded in the first positioning groove and the second positioning groove.

[0011] Optionally, the two side walls of the lower brightness enhancement film are respectively provided with two third positioning flanges and a fourth positioning flange, and the inner side wall of the glue-iron integrated frame is provided with a third positioning groove and a fourth positioning groove that correspond one-to-one with the third positioning flange and the fourth positioning flange, and the third positioning flange and the fourth positioning flange are respectively detachably embedded in the third positioning groove and the fourth positioning groove.

[0012] Optionally, the two side walls of the upper light enhancement film are respectively provided with two fifth positioning flanges and a sixth positioning flange, and the inner side wall of the glue-iron integrated frame is provided with a fifth positioning groove and a sixth positioning groove that correspond one-to-one with the fifth positioning flange and the sixth positioning flange, and the fifth positioning flange and the sixth positioning flange are respectively detachably embedded in the fifth positioning groove and the sixth positioning groove.

[0013] Optionally, a black screen printing layer is provided on one side of the lower end wall of the diffusion film, and the black screen printing layer is located above the light strip.

[0014] Optionally, a heat dissipation groove is provided on the lower end wall of the integrated iron frame.

[0015] Optionally, the side wall of the integrated frame is provided with multiple fixing plates, and each fixing plate is provided with a screw hole.

[0016] The technical solution of this invention has the following beneficial effects: Through an innovative backlight structure design, this invention addresses the defects in existing NB LCD display module backlight structures, achieving the following improvements: 1. Removing U-bends from plastic-coated iron molds solves the problem of fully automated production, reduces defects caused by manual handling of materials, and lowers labor costs. 2. Remove the small white strip and replace it with diffusion screen printing or black adhesive. Removing the small white strip reduces fixture costs, while replacing diffusion with screen printing or black adhesive improves the display effect and reduces material costs. 3. Reduce the number of molds required for the iron frame. Only the material cutting, forming, and shaping processes need to be retained, thus saving mold costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a novel NB LCD display module backlight structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of a novel NB LCD display module backlight structure according to an embodiment of the present invention from another perspective. Figure 3 This is a schematic diagram of the integrated frame of glue and iron in a novel NB LCD display module backlight structure according to an embodiment of the present invention; Figure 4 forFigure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 This is an exploded structural diagram of a novel NB LCD display module backlight structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the diffusion film in a novel NB liquid crystal display module backlight structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the lower brightness enhancement film of a novel NB liquid crystal display module backlight structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the upper brightness enhancement film of a novel NB liquid crystal display module backlight structure according to an embodiment of the present invention.

[0019] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

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

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] This invention proposes a novel backlight structure for notebook LCD display modules.

[0024] like Figures 1 to 9As shown, in one embodiment of the present invention, the novel NB LCD display module backlight structure includes a glue-iron integrated frame 101, a lamp strip 102, a reflective film 103, a light guide plate 104, a diffusion film 105, a lower brightness enhancement film 106, an upper brightness enhancement film 107, and a light-shielding tape 108. The reflective film 103 is disposed on the inner bottom wall of the glue-iron integrated frame 101, the light guide plate 104 is disposed on the upper end of the reflective film 103, the lamp strip 102 is disposed on one side of the light guide plate 104, and the upper end of the lamp strip 102 is provided with a plurality of L-shaped elements spaced apart. The LED beads and light strip 102 are equipped with an FPC circuit board. One end of the FPC circuit board extends out of the integrated frame 101. The LED beads are all in contact with the side wall of the light guide plate 104. The diffuser film 105, the lower brightness enhancement film 106 and the upper brightness enhancement film 107 are arranged sequentially from bottom to top at the upper end of the light guide plate 104. The light-shielding tape 108 is bonded to the upper end of the integrated frame 101 around the perimeter, and the light-shielding tape 108 is located above the gap between the outer side of the upper brightness enhancement film 107 and the inner side wall of the integrated frame 101.

[0025] Specifically, it also includes a first double-sided adhesive 109, which is attached to one side of the inner bottom wall of the glue-iron integrated frame 101, and the light strip 102 is attached to the first double-sided adhesive 109, thereby enabling fully automated assembly and production of the product.

[0026] Specifically, it also includes a second double-sided adhesive 110, which is bonded to the other side of the inner bottom wall of the glue-iron integrated frame 101. A limiting step (not shown) is provided on the inner side of the second double-sided adhesive 110. The reflective film 103 is bonded to the limiting step. The two sides of the light guide plate 104 are fixedly connected to the upper end wall of the light strip 102 and the upper end wall of the second double-sided adhesive 110, respectively, thereby realizing fully automated assembly and production of the product.

[0027] Specifically, it also includes a third double-sided adhesive 111, which is bonded to the upper wall of the light strip 102. The two sides of the light guide plate 104 are bonded to the second double-sided adhesive 110 and the third double-sided adhesive 111 respectively, thereby enabling fully automated assembly and production of the product.

[0028] Specifically, the two side walls of the diffusion membrane 105 are respectively provided with two first positioning flanges 1051 and second positioning flanges 1052. The inner side wall of the glue-iron integrated frame 101 is provided with a first positioning groove 1011 and a second positioning groove 1012 corresponding one-to-one with the first positioning flanges 1051 and second positioning flanges 1052. The first positioning flanges 1051 and second positioning flanges 1052 are respectively detachably embedded in the first positioning grooves 1011 and second positioning grooves 1012, which plays a role in preventing mistaken installation and avoiding reversed installation of membrane materials. At the same time, it plays a positioning role, which facilitates automatic alignment during assembly and can realize fully automated assembly production of products.

[0029] Specifically, the two side walls of the lower brightness enhancement film 106 are respectively provided with two third positioning flanges 1061 and a fourth positioning flange 10162. The inner side wall of the glue-iron integrated frame 101 is provided with a third positioning groove 1013 and a fourth positioning groove 1014 corresponding to the third positioning flanges 1061 and 1062. The third positioning flanges 1061 and 1062 are detachably embedded in the third positioning grooves 1013 and 1014, respectively, which plays a role in preventing mistake-proofing and avoiding the reversed installation of the film material. At the same time, it plays a positioning role, which facilitates automatic alignment during the assembly process and can realize fully automated assembly production of the product.

[0030] Specifically, the two side walls of the brightness enhancement film 107 are respectively provided with two fifth positioning flanges 1071 and a sixth positioning flange 1072. The inner side wall of the glue-iron integrated frame 101 is provided with a fifth positioning groove 1015 and a sixth positioning groove 1016 corresponding to the fifth positioning flanges 1071 and the sixth positioning flanges 1072. The fifth positioning flanges 1071 and the sixth positioning flanges 1072 are detachably embedded in the fifth positioning grooves 1015 and the sixth positioning grooves 1016, which serves to prevent mistaken installation and avoid the reversed order of the film material. At the same time, it serves to position the film material, which facilitates automatic alignment during the assembly process and enables fully automated assembly and production of the product.

[0031] Specifically, a black screen printing layer (not shown) is provided on one side of the lower end wall of the diffusion film 105. The black screen printing layer is located above the light strip 102 and can improve the display effect.

[0032] Specifically, the lower end wall of the integrated iron frame 101 is provided with a heat dissipation groove 1017, which plays a role in accelerating heat dissipation.

[0033] Specifically, the side wall of the glued iron integrated frame 101 is provided with multiple fixing plates 1018, and each fixing plate 1018 is provided with a screw hole 1019.

[0034] Specifically, this invention, through an innovative backlight structure design, addresses the shortcomings of existing NB LCD display module backlight structures by making the following improvements, resulting in the following effects: 1. Removing U-bends from plastic-coated iron molds solves the problem of fully automated production, reduces defects caused by manual handling of materials, and lowers labor costs. 2. Remove the small white strip and replace it with diffusion screen printing or black adhesive. Removing the small white strip reduces fixture costs, while replacing diffusion with screen printing or black adhesive improves the display effect and reduces material costs. 3. Reduce the number of molds required for the iron frame. Only the material cutting, forming, and shaping processes need to be retained, thus saving mold costs.

[0035] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A novel backlight structure for a notebook LCD display module, characterized in that, The device includes an integrated frame, LED strips, a reflective film, a light guide plate, a diffuser film, a lower brightness enhancement film, an upper brightness enhancement film, and light-shielding tape. The reflective film is disposed on the inner bottom wall of the integrated frame. The light guide plate is disposed on the upper end of the reflective film. The LED strip is disposed on one side of the light guide plate. Multiple LED beads are spaced apart on the upper end of the LED strip. The LED strip is equipped with an FPC circuit board, one end of which extends out of the integrated frame. The LED beads are all in contact with the side wall of the light guide plate. The diffuser film, lower brightness enhancement film, and upper brightness enhancement film are disposed sequentially from bottom to top on the upper end of the light guide plate. The light-shielding tape is adhered to the perimeter of the upper end of the integrated frame, and the light-shielding tape is located above the gap between the outer side of the upper brightness enhancement film and the inner side wall of the integrated frame.

2. The novel NB LCD display module backlight structure according to claim 1, characterized in that, It also includes a first double-sided adhesive, which is bonded to one side of the inner bottom wall of the integrated iron frame, and the light strip is bonded to the first double-sided adhesive.

3. The novel NB LCD display module backlight structure according to claim 1, characterized in that, It also includes a second double-sided adhesive, which is bonded to the other side of the inner bottom wall of the glue-iron integrated frame. A limiting step is provided on the inner side of the second double-sided adhesive, and the reflective film is bonded to the limiting step. The two sides of the light guide plate are respectively fixedly connected to the upper end wall of the light strip and the upper end wall of the second double-sided adhesive.

4. The novel NB LCD display module backlight structure according to claim 3, characterized in that, It also includes a third double-sided adhesive, which is bonded to the upper wall of the light strip, and the two sides of the light guide plate are respectively bonded to the second double-sided adhesive and the third double-sided adhesive.

5. The novel NB LCD display module backlight structure according to claim 1, characterized in that, The diffusion membrane has two first positioning flanges and two positioning flanges on its two side walls respectively. The inner side wall of the glue-iron integrated frame has a first positioning groove and a second positioning groove that correspond one-to-one with the first positioning flange and the second positioning flange. The first positioning flange and the second positioning flange are respectively detachably embedded in the first positioning groove and the second positioning groove.

6. The novel NB LCD display module backlight structure according to claim 1, characterized in that, The lower light enhancement film has two third positioning flanges and a fourth positioning flange on its two side walls respectively. The inner side wall of the glue-iron integrated frame has a third positioning groove and a fourth positioning groove that correspond one-to-one with the third positioning flange and the fourth positioning flange. The third positioning flange and the fourth positioning flange are detachably embedded in the third positioning groove and the fourth positioning groove respectively.

7. The novel NB LCD display module backlight structure according to claim 1, characterized in that, The upper light-enhancing film has two fifth positioning flanges and a sixth positioning flange on its two side walls respectively. The inner side wall of the glue-iron integrated frame has a fifth positioning groove and a sixth positioning groove that correspond one-to-one with the fifth positioning flange and the sixth positioning flange. The fifth positioning flange and the sixth positioning flange are detachably embedded in the fifth positioning groove and the sixth positioning groove respectively.

8. The novel NB LCD display module backlight structure according to claim 1, characterized in that, A black screen printing layer is provided on one side of the lower end wall of the diffusion film, and the black screen printing layer is located above the light strip.

9. The novel NB LCD display module backlight structure according to claim 1, characterized in that, The lower end wall of the integrated iron frame is provided with a heat dissipation groove.

10. The novel NB liquid crystal display module backlight structure according to claim 1, characterized in that, The side wall of the integrated glue and iron frame is provided with multiple fixing plates, and each fixing plate is provided with a screw hole.

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