Light leakage prevention LCD screen backlight plate structure

Abstract

The utility model discloses a light leakage prevention LCD screen backlight plate structure which comprises a light scattering piece, a light guide plate and a light shielding plate, a groove for containing the light guide plate is formed in the front face of the light shielding plate, the light guide plate is installed in the groove, and a square groove for containing an LED light source is formed in the back face of the light shielding plate. A gap is arranged between the square groove for placing the LED light source and the groove for placing the light guide plate, the LED light source transmits light to the light guide plate through the gap, and the light diffusion sheet covers the light guide plate. According to the utility model, the number of parts is reduced, the assembly is simple, the assembly time is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic equipment with handheld mobile LCD screen display, in particular to a light leakage-proof LCD screen backlight plate structure. Background Art

[0002] Electronic devices with LCD screen displays are widely used in various electronic devices due to their low power consumption, portability and good display effects. From mobile power supplies to large advertising machines to computer monitors, LCD screen technology provides important technical support for modern electronic devices.

[0003] The backlight panel of an existing LCD is usually composed of a back shading paper, a light guide plate, a surrounding shading film, a front shading film, and a diffuser. However, the large number of parts increases the production cost. The assembly is complicated, requiring a lot of time and manpower. The shading film is manually attached, the production efficiency is low, and the quality is difficult to control. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide a light leakage-proof LCD screen backlight plate structure, which simplifies the number of parts, simplifies assembly, saves assembly time and improves production efficiency.

[0005] The purpose of the utility model is achieved as follows: a light leakage-proof LCD screen backlight plate structure, comprising a diffuser, a light guide plate and a light shielding plate, wherein a groove for placing the light guide plate is arranged on the front of the light shielding plate, and the light guide plate is installed in the groove, and a square groove for placing an LED light source is arranged on the back of the light shielding plate, and a gap is arranged between the square groove for placing the LED light source and the groove for placing the light guide plate, and the LED light source transmits light to the light guide plate through the gap, and the diffuser covers the light guide plate.

[0006] The utility model adopts the above technical scheme, and compared with the prior art, the beneficial effects are as follows: the backlight plate is respectively composed of a diffuser, a light guide plate, and a light shielding plate, the light guide plate is placed in the groove of the light shielding plate, and then the diffuser is covered on the surface of the light guide plate, the diffuser further adjusts the light of the light guide plate, so that the light is evenly diffused to the LCD screen, and at the same time the original five parts are simplified into three parts, the structure is simplified, the light shielding plate adopts the injection molding process, so that it is tight and light-proof on all sides and the bottom, replacing the traditional complicated manually pasted light shielding film, greatly saving time and manpower; providing quality, improving assembly accuracy and assembly efficiency, and further improving production efficiency and quality.

[0007] In order to effectively block light, light leakage-proof side walls are arranged around the square groove where the LED light source is placed.

[0008] In order to absorb the LED light to the maximum extent and transmit it to the central area, a slope structure is provided at one end of the light guide plate.

[0009] Furthermore, two square grooves for placing LED light sources are provided on the back side of the shading plate.

[0010] In order to prevent light from leaking around and at the bottom and better block the light from escaping, the shading plate is made by injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic structural diagram of the utility model.

[0012] Figure 2 A schematic diagram of the back structure of the sunshade of the utility model.

[0013] Figure 3 The utility model is a sectional view of the whole machine assembly.

[0014] Figure 4 An enlarged view of point A of the present utility model.

[0015] Among them, 1 is a diffuser plate, 2 is a light guide plate, 3 is a shading plate, 4 is a square groove for placing the LED light source, 5 is a gap, 6 is a PCB board, 7 is an LED light source, 8 is an LCD screen, 9 is a transparent lens, 10 is a bottom shell, and 11 is a surface shell. DETAILED DESCRIPTION

[0016] like Figure 1-3 The light-leakage-proof LCD screen backlight panel structure shown in the figure comprises a diffuser 1, a light guide plate and a light shielding plate 3. A groove for placing the light guide plate is arranged on the front of the light shielding plate 3, and the light guide plate 2 is installed in the groove. A slope structure is arranged at one end of the light guide plate 2, which can absorb the light of the LED light source 7 to the maximum extent and transmit it to the central area. Two square grooves 4 for placing the LED light sources are arranged on the back of the light shielding plate 3, and light-leakage-proof side walls are arranged around the square grooves 4 for placing the LED light sources. A gap 5 is arranged between the square grooves 4 for placing the LED light sources and the groove for placing the light guide plate, and the LED light source 7 transmits the light to the light guide plate 2 through the gap 5. The diffuser 1 covers the light guide plate 2 to evenly scatter the light to the plane area. The light shielding plate 3 is processed by injection molding technology, and the surroundings and the bottom play a role in blocking the light from being scattered.

[0017] When the utility model is working, Figure 4As shown, a PCB board 6 is installed on the bottom shell 10, a shading plate 3 is arranged on the PCB board 6, an LED light source 7 is arranged in the placement groove 4 of the LED light source, and the LED light source 7 is electrically connected to the PCB board 6; the light guide plate 2 is installed in the groove of the shading plate 3, and a layer of diffuser 1 is covered on the light guide plate 2, and the light of the LED light source 7 is diffused to the LCD screen 8 on the surface shell 11 through the backlight plate structure, and the content of the LCD screen 8 is displayed through the transparent lens 9 on the surface.

[0018] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A light leakage-proof LCD screen backlight plate structure, characterized in that: It includes a diffuser, a light guide plate and a light shading plate. The front side of the light shading plate is provided with a groove for placing the light guide plate, and the light guide plate is installed in the groove. The back side of the light shading plate is provided with a square groove for placing the LED light source. A gap is provided between the square groove for placing the LED light source and the groove for placing the light guide plate. The LED light source transmits light to the light guide plate through the gap. The diffuser covers the light guide plate.

2. The anti-light leakage LCD screen backlight plate structure according to claim 1, characterized in that: The square groove for placing the LED light source is provided with light leakage-proof side walls around it.

3. The anti-light leakage LCD screen backlight plate structure according to claim 1, characterized in that: One end of the light guide plate is provided with a slope structure.

4. The anti-light leakage LCD screen backlight plate structure according to claim 1, characterized in that: The back side of the shading plate is provided with two square grooves for placing LED light sources.

5. The anti-light leakage LCD screen backlight plate structure according to claim 1, characterized in that: The shading plate is manufactured by using an injection molding process.

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