Backlight source structure for notebook computer

Abstract

The backlight source structure comprises a light guide plate, a PCBA (printed circuit board assembly) and an iron frame, the PCBA and the iron frame are sequentially stacked along the back face of the light guide plate, the PCBA is provided with a plurality of light sources for projecting light rays to the light guide plate, a plurality of grooves for containing the light sources are formed in the light guide plate, and the grooves are communicated with the light guide plate. The positions and the number of the grooves correspond to those of the light sources, the two ends of the iron frame are fixed to the two side faces of the light guide plate, so that the PCBA is clamped and fixed to the back face of the light guide plate, the middle of the iron frame is provided with a limiting part which protrudes towards one end of the light guide plate and is supported at the bottom of the PCBA, and the upper end face of the light guide plate is provided with a prismatic lens used for brightening light. By optimizing the internal structure, not only are the light utilization rate and the display effect improved, but also the whole assembly process is simplified, and the stability and durability of the structure are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of backlight technology, specifically a backlight structure for a laptop computer. Background Technology

[0002] As a key component of laptop displays, backlights play a crucial role in projecting light evenly onto the screen, directly impacting the user's visual experience and screen display quality.

[0003] In the current field of laptop backlight technology, there are common problems such as insufficient light utilization and complex assembly processes. Traditional backlight structures often suffer from design limitations, resulting in insufficient and uneven illumination of the light emitted by the light source onto the light guide plate, thus affecting the screen's display effect. In addition, traditional backlight components are usually composed of multiple independent parts, which require complex positioning and fixing steps during assembly, increasing production costs and reducing production efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a backlight structure for laptops, which can effectively solve the technical problems of insufficient light and inconvenient assembly of current laptop backlights.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A backlight structure for a laptop computer includes a light guide plate, a PCBA, and a metal frame. The PCBA and the metal frame are stacked sequentially along the back of the light guide plate. The PCBA is equipped with several light sources that project light onto the light guide plate, and several grooves for accommodating the light sources are formed on the light guide plate. The grooves correspond to the position and number of the light sources. The two ends of the metal frame are fixed to the two sides of the light guide plate, so that the PCBA is clamped and fixed to the back of the light guide plate. A limiting part is provided in the middle of the metal frame, which protrudes from one end of the light guide plate and supports the bottom of the PCBA. A prism sheet for enhancing light brightness is provided on the upper surface of the light guide plate.

[0007] Furthermore, a reflective film is adhered to the back of the light guide plate.

[0008] Furthermore, a number of protruding through-posts are provided on the back of the light guide plate, and the PCBA is fixed by the through-posts inserted inside.

[0009] Furthermore, the iron frame is detachably connected to the light guide plate, and both sides of the light guide plate are provided with protruding fixing blocks. The iron frame is provided with fixing grooves corresponding to the positions of the fixing blocks.

[0010] Furthermore, the back of the PCBA is provided with a power connection port for connecting to electricity, and the position of the iron frame covering the power connection port is provided with an upward protrusion.

[0011] Furthermore, the iron frame is provided with a downwardly bent mounting part, the mounting part has a mounting hole, and the light guide plate has a hole aligned with the mounting part.

[0012] Furthermore, the bottom of the light guide plate is provided with a bent portion that bends backward, and the front and both sides of the bent portion are covered with a black adhesive layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The backlight structure provided by this utility model not only improves light utilization and display effect by optimizing the internal structure, but also simplifies the entire assembly process and enhances the stability and durability of the structure. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the overall structure of this utility model embodiment;

[0016] Figure 2 This is a rear view of the overall structure of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the PCBA connection frame structure according to an embodiment of the present utility model;

[0018] Figure 4 This is an exploded view of the overall structure of an embodiment of the present utility model;

[0019] Figure 5 This is an embodiment of the present utility model. Figure 4 Enlarged schematic diagram of section A in the middle;

[0020] Figure 6 This is an embodiment of the present utility model. Figure 4 Enlarged schematic diagram of section B;

[0021] Numbering on the map:

[0022] 1-Light guide plate, 2-PCBA, 3-Iron frame, 4-Light source, 5-Prism sheet, 6-Reflective film, 7-Black glue layer, 8-Foam;

[0023] 101-groove, 102-insertion post, 103-fixing block, 104-hole, 105-bend;

[0024] 201 - Power connector;

[0025] 301-Limiting part, 302-Fixing groove, 303-Protrusion, 304-Mounting part, 305-Mounting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-6 As shown, this utility model provides a backlight structure for laptops, aiming to provide a backlight solution with stable structure, uniform light and easy assembly, suitable for improving the visual effect of laptop screens.

[0028] The backlight structure mainly includes a light guide plate 1, a PCBA2, and an iron frame 3. The light guide plate 1 serves as the main medium for light propagation, and its material is preferably acrylic or polycarbonate with high light transmittance. The PCBA2 is a printed circuit board assembly.

[0029] On the back of the light guide plate 1, the PCBA 2 and the iron frame 3 are stacked in sequence. Several light sources 4, such as LED beads, are installed on the PCBA 2. These light sources 4 are responsible for projecting light onto the light guide plate 1.

[0030] To precisely guide light and reduce light loss, a prism sheet 5 is provided on the upper surface of the light guide plate 1. The prism sheet 5 effectively brightens and evenly distributes light through the microstructure on its surface. At the same time, several grooves 101 are formed on the back of the light guide plate 1 at the position corresponding to the light source 4. These grooves 101 not only help to position the light source 4, but also optimize the propagation path of light in the light guide plate to a certain extent.

[0031] The iron frame 3 plays a crucial role in fixing and supporting the structure. Both ends of the iron frame 3 are fixedly connected to the two sides of the light guide plate 1, ensuring that the PCBA 2 is securely clamped between the light guide plate 1 and the iron frame 3. A limiting part 301 is designed in the middle of the iron frame 3. This limiting part 301 protrudes from one end of the light guide plate 1 and directly supports the bottom of the PCBA 2, further enhancing the stability of the structure.

[0032] To further improve light utilization, a reflective film 6 is also attached to the back of the light guide plate 1. The reflective film 6 can reflect light that is not effectively utilized by the light guide plate back into the light guide plate, thereby enhancing the brightness and uniformity of the backlight.

[0033] To simplify the assembly process and improve structural robustness, several protruding insertion posts 102 are added to the back of the light guide plate 1. During assembly, the PCBA 2 is inserted into these insertion posts 102 through corresponding holes to achieve initial fixation. This design not only simplifies the installation steps but also effectively prevents the PCBA 2 from loosening during long-term use.

[0034] For ease of maintenance and upgrades, the iron frame 3 and the light guide plate 1 are detachably connected. The light guide plate 1 has protruding fixing blocks 103 on both sides, while the iron frame 3 has fixing grooves 302 corresponding to the positions of these fixing blocks 103. Quick assembly and disassembly of the iron frame 3 and the light guide plate 1 can be achieved through simple snap-fit ​​or sliding mechanisms.

[0035] For electrical connection safety, PCBA 2 has a power connector 201 on the back, which can be connected via USB. To prevent the power connector 201 from being directly exposed, the metal frame 3 has an upward-protruding protrusion 303 covering the power connector 201, which protects the power connector from physical damage and maintains a clean appearance.

[0036] To ensure a secure mounting of the backlight structure and other components, the metal frame 3 is also provided with a downwardly bent mounting portion 304. The mounting portion 304 has mounting holes 305, while the light guide plate 1 has corresponding holes 104. Through these holes and mounting openings, the backlight structure can be securely mounted to the laptop's display module using screws or other fasteners. Furthermore, foam padding 8 is provided on both the front of the light guide plate 1 and the back of the metal frame 3 to enhance overall protection.

[0037] To further improve the sealing and aesthetics of the backlight structure, the bottom of the light guide plate 1 is also provided with a bent portion 105 that bends backward. Black adhesive layer 7 is attached to the front and both sides of the bent portion 105. The black adhesive layer 7 can not only effectively block light leakage, but also prevent dust and impurities from entering the backlight structure, ensuring long-term stable operation.

[0038] In summary, the backlight structure provided by this utility model, through optimization of its internal structure, not only improves light utilization and display effect, but also simplifies the entire assembly process and enhances the stability and durability of the structure.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A backlight structure for a laptop computer, comprising a light guide plate, a PCBA, and a metal frame, characterized in that: The PCBA and the iron frame are stacked sequentially along the back of the light guide plate. The PCBA is equipped with several light sources that project light onto the light guide plate, and several grooves for accommodating the light sources are formed on the light guide plate. The grooves correspond to the position and number of the light sources. The two ends of the iron frame are fixed to the two sides of the light guide plate, so that the PCBA is clamped and fixed to the back of the light guide plate. The middle of the iron frame is provided with a limiting part that protrudes from one end of the light guide plate and supports the bottom of the PCBA. The upper surface of the light guide plate is provided with a prism sheet for enhancing the brightness of the light.

2. The backlight structure for a laptop computer according to claim 1, characterized in that: A reflective film is attached to the back of the light guide plate.

3. The backlight structure for a laptop computer according to claim 1, characterized in that: The back of the light guide plate is provided with several protruding through-posts, and the PCBA is fixed by the through-posts inserted inside.

4. The backlight structure for a laptop computer according to claim 1, characterized in that: The iron frame is detachably connected to the light guide plate. Both sides of the light guide plate are provided with protruding fixing blocks, and the iron frame is provided with fixing grooves corresponding to the positions of the fixing blocks.

5. A backlight structure for a laptop computer according to claim 1, characterized in that: The back of the PCBA is provided with a power connection port for connecting to electricity, and the position of the iron frame covering the power connection port is provided with an upward protrusion.

6. A backlight structure for a laptop computer according to claim 1, characterized in that: The iron frame is provided with a downwardly bent mounting part, the mounting part has a mounting hole, and the light guide plate has a hole aligned with the mounting part.

7. A backlight structure for a laptop computer according to any one of claims 1-6, characterized in that: The bottom of the light guide plate is provided with a bent portion that bends backward, and the front and both sides of the bent portion are covered with a black adhesive layer.

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