Front light display module and display device

Abstract

The embodiment of the utility model discloses a front light display module and a display device. The front light display module comprises a light guide layer, a light leakage prevention module and a light emitting module. The light leakage prevention modules are arranged on any three sides of the light guide layer, and the light emitting module is arranged on the side, not provided with the light leakage prevention modules, of the light guide layer. The light emitting module can provide light for the light guide layer, and the light leakage prevention module can seal the edge of the light guide layer so as to prevent the edge of the light guide layer from leaking light. According to the scheme, the edge, without the light source, of the light guide layer can be sealed through the light leakage prevention module, light is prevented from leaking from the edge of the light guide layer, and therefore the light utilization rate of the light guide layer is increased, and the display effect of the display panel is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of display panels, and in particular to a front light display module and a display device. Background Art

[0002] Liquid crystal displays (LCDs) are passive display devices that operate by modulating the light emitted by a backlight source to display images, using liquid crystal molecules to change their alignment under the influence of an electric field. In a common frontlight backlight system, the light source is positioned on the side of the LCD. Light is directed to the back of the screen via optical components such as a light guide plate, allowing the liquid crystal molecules to modulate this light to display the image. However, in current LCDs using frontlight backlights, light leaks from the edges of the light guide plate, reducing the display quality. Utility Model Content

[0003] The embodiments of the present invention provide a front light display module and a display device to prevent light leakage from a light guide layer and improve the display effect of a display panel.

[0004] In a first aspect, an embodiment of the present invention provides a front light display module, which includes a light guide layer, a light leakage prevention module, and a light emitting module;

[0005] The anti-leakage light module is arranged on any three sides of the light guide layer, and the light emitting module is arranged on the side of the light guide layer where the anti-leakage light module is not arranged; the light emitting module provides light to the light guide layer, and the anti-leakage light module seals the edge of the light guide layer.

[0006] Optionally, the anti-leakage light module includes three U-shaped sealing frames, a first light path reflection unit and four second light path reflection units;

[0007] Each of the U-shaped sealing frames is arranged on either side of the light guide layer, and the U-shaped sealing frames arranged on two adjacent sides of the light guide layer are connected to each other;

[0008] The concave surface of each U-shaped sealing frame faces the light guide layer, and each U-shaped sealing frame wraps one side edge of the light guide layer. The first light path reflection unit is arranged on the concave surface of the U-shaped sealing frame, and each second light path reflection unit is arranged at a position where the concave surface of the U-shaped sealing frame faces the corner of the light guide layer.

[0009] Optionally, the first light path reflecting unit includes a reflecting layer;

[0010] The reflective layer is arranged on the concave surface of the U-shaped sealing frame.

[0011] Optionally, the second light path reflecting unit includes a triangular prism reflecting mirror or a reflecting surface;

[0012] The triangular prism reflector or the reflective surface is arranged at a position where the concave surface of the U-shaped sealing frame faces the corner of the light guide layer, and the inclined surface of the triangular prism reflector or the reflective surface faces the corner of the light guide layer.

[0013] Optionally, the light emitting module includes a light emitting unit and two light path adjustment units;

[0014] The light emitting unit and the optical path adjusting unit are both arranged on a side of the light guide layer where the anti-leakage light module is not arranged, and the light emitting unit is arranged between the two optical path adjusting units.

[0015] Optionally, the light emitting unit includes two light emitting diodes;

[0016] The two light emitting diodes are symmetrical about the symmetry axis of the adjacent side edges of the light guide layer;

[0017] The two optical path adjustment units are symmetrical about a symmetry axis of sides of adjacent light guide layers.

[0018] Optionally, the optical path adjustment unit includes a triangular prism-shaped half-reflective half-mirror lens;

[0019] The inclined surface of the triangular prism-shaped half-reflecting half-mirror faces the light-emitting unit, one right-angled surface of the triangular prism-shaped half-reflecting half-mirror is parallel to the side of the adjacent light-guiding layer, and the other right-angled surface of the triangular prism-shaped half-reflecting half-mirror is perpendicular to the side of the adjacent light-guiding layer.

[0020] Optionally, the edge side of the light guide layer has a rough structure;

[0021] The rough structure includes a sawtooth structure, a frosted structure and a rounded structure.

[0022] Optionally, the front light display module further includes an adhesive layer and a display panel;

[0023] The adhesive layer is disposed between the light guide layer and the display panel.

[0024] In a second aspect, an embodiment of the present invention further provides a display device, which includes the front light display module provided by any embodiment of the present invention.

[0025] The embodiment of the utility model can seal the edge of the light guide layer where no light source is set through the anti-leakage light module, preventing light from leaking from the edge of the light guide layer, thereby improving the utilization rate of light by the light guide layer and improving the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic cross-sectional view of a front light display module provided by an embodiment of the present utility model;

[0028] Figure 2 A schematic cross-sectional view of another front light display module provided by an embodiment of the present utility model;

[0029] Figure 3 This is a partially enlarged view of an anti-light leakage unit provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are capable of distinguishing similar objects, and are not necessarily capable of describing a specific order or sequence. It should be understood that the numbers used in this way are interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Figure 1 A schematic cross-sectional view of a front light display module provided by an embodiment of the present invention is shown in FIG. Figure 1 As shown, the front light display module includes a light guide layer 110, an anti-leakage light module 120 and a light emitting module 130;

[0033] The anti-leakage light module 120 is arranged on any three sides of the light guide layer 110, and the light-emitting module 130 is arranged on the side of the light guide layer 110 where the anti-leakage light module 120 is not arranged; the light-emitting module 130 can provide light to the light guide layer 110, and the anti-leakage light module 120 can seal the edges of the light guide layer 110 to prevent light leakage from the edges of the light guide layer 110.

[0034] The light-emitting module 130 is positioned on the side of the light-guiding layer 110 where the anti-leakage light module 120 is not positioned. This allows the light emitted by the light-emitting module 130 to be concentrated on one side of the light-guiding layer 110. The light-guiding layer 110 then disperses and guides this concentrated light to the back of the entire liquid crystal panel, evenly distributing the light and ensuring consistent brightness across all areas of the liquid crystal display. For example, in a liquid crystal display panel, light passing through the light-guiding layer 110 ensures that every area of ​​the image has the appropriate brightness, preventing areas from being too bright or too dark. Furthermore, the light-guiding layer 110 effectively controls and guides light, reducing light loss during propagation.

[0035] The anti-light leakage module 120 is arranged on the three sides of the light guide layer 110 where no light source is set. It can seal the edges of the light guide layer 110 where no light source is set, preventing light from leaking from the edges of the light guide layer 110, thereby improving the utilization rate of light by the light guide layer 110 and improving the display effect of the display panel.

[0036] Based on the above embodiment, optionally, Figure 2 This is a schematic cross-sectional view of another front light display module provided by an embodiment of the present invention. Figure 3 This is a partial enlarged view of a light leakage prevention unit provided in an embodiment of the present utility model. Figure 1-Figure 3 As shown, the anti-leakage light module 120 includes three U-shaped sealing frames 121, a first light path reflecting unit 122 and four second light path reflecting units 123;

[0037] Each U-shaped sealing frame 121 is disposed on either side of the light guide layer 110 , and the U-shaped sealing frames 121 disposed on two adjacent sides of the light guide layer 110 are connected to each other;

[0038] The concave surface of each U-shaped sealing frame 121 faces the light guide layer 110, and each U-shaped sealing frame 121 wraps one side edge of the light guide layer 110. The first light path reflecting unit 122 is arranged on the concave surface of the U-shaped sealing frame 121, and each second light path reflecting unit 123 is arranged at a corner position of the concave surface of the U-shaped sealing frame 121 facing the light guide layer 110.

[0039] The cavity formed between each U-shaped sealing frame 121 and the side edge of the light guide layer 110 is the propagation path of the light that does not enter the light guide layer 110, and each second light path reflection unit 123 can change the propagation direction of the light propagating in the cavity (refer to Figure 1The first light path reflecting unit 122 can reflect the light incident on the concave surface of the U-shaped sealing frame 121 to increase the amount of light incident on the light guide layer 110 .

[0040] It should be noted that the first light path reflector 122 can be laid on the entire or partial recessed surface of the U-shaped sealing frame 121. This solution does not limit this, and the placement can be customized according to actual circumstances. The larger the area of ​​the first light path reflector 122 laid on the recessed surface of the U-shaped sealing frame 121, the more light is incident on the light guide layer 110, and the higher the utilization rate of the light source provided by the light-emitting module 130.

[0041] On the basis of the above embodiment, optionally, the first light path reflecting unit 122 includes a reflecting layer; the reflecting layer is provided on the concave surface of the U-shaped sealing frame 121 .

[0042] The reflective layer can reflect the light that would otherwise be wasted back into the light guide layer 110 , so that the light is guided back to the liquid crystal panel by the light guide plate, thereby improving light utilization and enhancing screen brightness.

[0043] On the basis of the above embodiment, optionally, the second light path reflecting unit 123 includes a triangular prism reflecting mirror or a reflecting surface;

[0044] The triangular prism-shaped reflector or reflective surface is disposed at a position where the concave surface of the U-shaped sealing frame 121 faces the corner of the light guide layer 110 , and the inclined surface or reflective surface of the triangular prism-shaped reflector faces the corner of the light guide layer 110 .

[0045] Among them, the triangular prism-shaped reflectors or reflective surfaces are arranged facing the four corners of the light guide layer 110, which can effectively change the propagation direction of the light propagating in the cavity, so that the light propagates smoothly in the cavity, so that the light that does not enter the light guide layer 110 is evenly distributed on all sides of the light guide layer 110, increasing the amount of light entering the light guide layer 110, improving the utilization rate of light, and enhancing the brightness of the screen.

[0046] On the basis of the above embodiment, optionally, continue to refer to Figure 1 , the light emitting module 130 includes a light emitting unit 131 and two light path adjustment units 132;

[0047] The light emitting unit 131 and the optical path adjusting unit 132 are both disposed on a side of the light guide layer 110 where the anti-leakage light module 120 is not disposed. The light emitting unit 131 is disposed between the two optical path adjusting units 132 .

[0048] Specifically, the light emitting unit 131 includes two light emitting diodes; the light path adjustment unit 132 includes a triangular prism-shaped half-reflective half-mirror lens;

[0049] The inclined surface of the triangular prism-shaped half-reflecting half-mirror faces the light-emitting unit 131 , one right-angled surface of the triangular prism-shaped half-reflecting half-mirror is parallel to the side of the adjacent light-guiding layer 110 , and the other right-angled surface of the triangular prism-shaped half-reflecting half-mirror is perpendicular to the side of the adjacent light-guiding layer 110 .

[0050] The conventional light module 130 uses a light strip. When used as a front light, it doesn't need to provide excessive brightness. Therefore, the light strip needs to be used with reduced current to reduce the amount of light provided to the light guide layer 110. This solution uses two LEDs as the front light, meeting the required brightness. Consequently, compared to the conventional solution, this solution can reduce light source energy consumption and design costs.

[0051] A half-reflective mirror is an optical element coated with a semi-reflective film on optical glass, altering the original ratio of transmission and reflection of the incident light beam. A half-reflective mirror can increase transmission and light intensity, or increase reflection and reduce light intensity. The ratio of transmission and reflection can be adjusted according to specific needs, for example, 50% each. Furthermore, a half-reflective mirror has low absorption properties, which can reduce light loss.

[0052] On the basis of the above embodiment, optionally, continue to refer to Figure 1 The two light emitting diodes are symmetrical about the symmetry axis of the adjacent side of the light guide layer 110 ; the two light path adjustment units 132 are symmetrical about the symmetry axis of the adjacent side of the light guide layer 110 .

[0053] The two light emitting diodes are symmetrical about the symmetry axis of the adjacent light guide layers 110 , and the two light path adjustment units 132 are symmetrical about the symmetry axis of the adjacent light guide layers 110 , which can enhance the uniformity of light distribution.

[0054] On the basis of the above embodiment, optionally, continue to refer to Figure 3 The edge side of the light guide layer 110 is a rough structure; the rough structure includes a sawtooth structure, a frosted structure and a rounded structure.

[0055] The edge side of the light guide layer 110 is provided with a rough structure, so as to disperse the light and allow more light to enter the light guide layer 110 , thereby improving the utilization rate of the light source.

[0056] On the basis of the above embodiment, optionally, continue to refer to Figure 2 The front light display module further includes an adhesive layer 140 and a display panel 150 ; the adhesive layer 140 is disposed between the light guide layer 110 and the display panel 150 .

[0057] The adhesive layer 140 can securely connect the light guide layer 110 and the display panel 150 .

[0058] An embodiment of the present invention further provides a display device, which includes the front light display module provided by any embodiment of the present invention, and thus has the beneficial effects of the front light display module provided by any embodiment of the present invention.

[0059] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this utility model can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this utility model can be achieved. This is not limited herein.

[0060] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A front light display module, characterized in that: It includes a light guide layer, an anti-leakage light module and a light emitting module; The anti-leakage light module is arranged on any three sides of the light guide layer, and the light emitting module is arranged on the side of the light guide layer where the anti-leakage light module is not arranged; the light emitting module provides light to the light guide layer, and the anti-leakage light module seals the edge of the light guide layer.

2. The front light display module according to claim 1, wherein: The anti-leakage light module includes three U-shaped sealing frames, a first light path reflection unit and four second light path reflection units; Each of the U-shaped sealing frames is arranged on either side of the light guide layer, and the U-shaped sealing frames arranged on two adjacent sides of the light guide layer are connected to each other; The concave surface of each U-shaped sealing frame faces the light guide layer, and each U-shaped sealing frame wraps one side edge of the light guide layer. The first light path reflection unit is arranged on the concave surface of the U-shaped sealing frame, and each second light path reflection unit is arranged at a position where the concave surface of the U-shaped sealing frame faces the corner of the light guide layer.

3. The front light display module according to claim 2, wherein: The first light path reflecting unit includes a reflecting layer; The reflective layer is arranged on the concave surface of the U-shaped sealing frame.

4. The front light display module according to claim 2, wherein: The second light path reflecting unit includes a triangular prism reflecting mirror or a reflecting surface; The triangular prism reflector or the reflective surface is arranged at a position where the concave surface of the U-shaped sealing frame faces the corner of the light guide layer, and the inclined surface of the triangular prism reflector or the reflective surface faces the corner of the light guide layer.

5. The front light display module according to claim 1, wherein: The light emitting module includes a light emitting unit and two light path adjustment units; The light emitting unit and the optical path adjusting unit are both arranged on a side of the light guide layer where the anti-leakage light module is not arranged, and the light emitting unit is arranged between the two optical path adjusting units.

6. The front light display module according to claim 5, characterized in that: The light emitting unit includes two light emitting diodes; The two light emitting diodes are symmetrical about the symmetry axis of the adjacent side edges of the light guide layer; The two optical path adjustment units are symmetrical about a symmetry axis of sides of adjacent light guide layers.

7. The front light display module according to claim 5, characterized in that: The optical path adjustment unit includes a triangular prism-shaped half-reflective half-mirror lens; The inclined surface of the triangular prism-shaped half-reflecting half-mirror faces the light-emitting unit, one right-angled surface of the triangular prism-shaped half-reflecting half-mirror is parallel to the side of the adjacent light-guiding layer, and the other right-angled surface of the triangular prism-shaped half-reflecting half-mirror is perpendicular to the side of the adjacent light-guiding layer.

8. The front light display module according to claim 1, wherein: The edge side of the light guide layer has a rough structure; The rough structure includes a sawtooth structure, a frosted structure and a rounded structure.

9. The front light display module according to claim 1, wherein: Also included is an adhesive layer and a display panel; The adhesive layer is disposed between the light guide layer and the display panel.

10. A display device, characterized in that: A front light display module comprising any one of claims 1 to 9.

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