Diffusion-plate-free structure of direct-type full-lamination backlight display
By applying arc-shaped diffusion coating on the surface of the lens lampshade and composite optical film of the direct-type backlight display, instead of the traditional diffusion plate, the problem of plastic material being easily deformed at high temperatures is solved, and uniform light and lightweight effects are achieved.
Patent Information
- Application Number
- CN202421166285.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-27
AI Technical Summary
Plastic material is easily yellowed and deformed when heated in direct-down backlight displays, with a high coefficient of thermal expansion and large thermal expansion and contraction. However, glass products are expensive and heavy, making it difficult to meet the needs of uniform light and lightweight.
The structure of using an arc-shaped diffusion coating is applied to the surface of the lens lamp cover and the composite optical film, instead of the traditional diffusion plate, combined with the integration of the LED lamp plate, the composite optical film, the first diffusion coating, the liquid crystal layer and the OCA optical adhesive layer. design.
The uniform light distribution is achieved, reducing the weight and cost of the display, while improving the lightweight and uniform light effect of the product.
Smart Images
Figure CN222482565U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of displays, and in particular relates to a structure of a direct-down type full-laminated backlight display without a diffusion plate. Background Art
[0002] In direct-type backlight, the light-distributing component is a diffuser, which can evenly disperse the point light source of the LED lamp beads into a surface light source that emits light on the entire surface. The diffuser material can be made of plastic products such as PMMA / PC / PS, or glass. Plastic materials are light, cheap and have good optical effects, but plastic materials are prone to yellowing and deformation when heated, and have a high thermal expansion coefficient, and a large amount of deformation due to thermal expansion and contraction. Glass products with high thermal stability are relatively expensive and heavy. Utility Model Content
[0003] The purpose of the utility model is to provide a direct-type fully laminated backlight display structure without a diffusion plate, so as to solve the technical problems that plastic materials are prone to yellowing and deformation when heated, have a high thermal expansion coefficient, and a large amount of thermal expansion and contraction deformation, while glass products with high thermal stability are relatively expensive and heavy, so as to achieve the effect of uniform light. The light-incident surface of the liquid crystal screen is fully laminated with a high-haze optical film, which further blocks the light shadow and achieves the purpose of uniform light.
[0004] In order to solve the above technical problems, the utility model provides a structure of a direct-type fully laminated backlight display without a diffusion plate, comprising:
[0005] An LED light board and a plurality of LED lamp beads arranged on the upper surface of the LED light board, wherein the LED lamp beads are covered with a lens lamp cover, and the lens lamp cover is coated with an arc-shaped diffusion coating toward the outside;
[0006] The LED light board is provided with a composite optical film at one side of the LED lamp bead, and the composite optical film is provided with a first diffusion coating layer and a liquid crystal layer in sequence on a side away from the LED light board.
[0007] Furthermore, the first diffusion coating layer and the liquid crystal layer are connected via an OCA optical adhesive layer.
[0008] Furthermore, the composite optical film and the liquid crystal layer are fully bonded to each other.
[0009] The beneficial effects of the utility model are:
[0010] 1. By applying a curved diffusion coating on the surface of the lens lampshade and the composite optical film to replace the diffusion plate in the direct-type backlight module, the cost is saved while also reducing the weight of the display mechanism.
[0011] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a structural schematic diagram of the structure of the non-diffusion plate of the direct-type fully laminated backlight display of the utility model;
[0014] Figure 2 Schematic diagram of the structure of a display with a diffusion plate.
[0015] In the figure:
[0016] 1. LED light board; 11. LED lamp beads;
[0017] 2. Lens lampshade;
[0018] 3. Arc diffusion coating;
[0019] 4. Composite optical film;
[0020] 5. First diffusion coating;
[0021] 6. Liquid crystal layer;
[0022] 7. OCA optical adhesive layer. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Example:
[0025] like Figure 1 to Figure 2As shown, a structure of a direct-down fully-laminated backlight display without a diffusion plate comprises: an LED light board 1 and a plurality of LED lamp beads 11 arranged on the upper surface of the LED light board 1, the LED lamp beads 11 are covered with a lens lampshade 2, and the lens lampshade 2 is coated with an arc-shaped diffusion coating 3 toward the outside. By coating the arc-shaped diffusion coating 3 on the lens lampshade 2, not only the effect is the same as that of the original diffusion plate with a single-layer structure, but also the material used for the diffusion coating is reduced, the cost is reduced, the overall weight is reduced, and the lightweight of the product is improved.
[0026] Among them, the LED light board 1 is provided with a composite optical film 4 at one side of the LED lamp bead 11, and the composite optical film 4 is provided with a first diffusion coating 5 and a liquid crystal layer 6 in sequence on the side away from the LED light board 1. The first diffusion coating 5 and the liquid crystal layer 6 are connected by an OCA optical adhesive layer 7. The first diffusion coating 5 can further improve the uniform light effect of the display. The OCA optical adhesive layer 7 improves the connection stability between the first diffusion coating 5 and the liquid crystal layer 6.
[0027] In this embodiment, the composite optical film 4 and the liquid crystal layer 6 are fully bonded to each other, so that the overall structure is integrated.
[0028] In summary, by coating the surface of the lens lampshade 2 and the composite optical film 4 with a diffusion coating to replace the diffusion plate in the direct-lit backlight module, the cost is saved and the weight of the display mechanism is also reduced.
[0029] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.
[0030] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0032] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A structure of a direct-type fully laminated backlight display without a diffusion plate, characterized in that: include: An LED light board (1) and a plurality of LED lamp beads (11) arranged on the upper surface of the LED light board (1), wherein the LED lamp beads (11) are covered with a lens lamp cover (2), and the lens lamp cover (2) is coated with an arc-shaped diffusion coating (3) toward the outside; The LED light board (1) is provided with a composite optical film (4) at intervals on one side of the LED lamp bead (11); the composite optical film (4) is provided with a first diffusion coating (5) and a liquid crystal layer (6) in sequence on a side away from the LED light board (1).
2. The structure of a direct-type fully laminated backlight display without a diffusion plate as claimed in claim 1, characterized in that: The first diffusion coating (5) and the liquid crystal layer (6) are connected via an OCA optical adhesive layer.
3. The structure of a direct-type fully laminated backlight display without a diffusion plate as claimed in claim 2, characterized in that: The composite optical film (4) and the liquid crystal layer (6) are fully bonded to each other.