Insulating foam rubber structure of reflecting film of backlight source
By using reflective film instead of foam glue in the backlight iron frame, the problems of skewed and rework are solved, cost reduction and production efficiency improvement are achieved, and product quality is ensured.
Patent Information
- Application Number
- CN202420403178.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-04
AI Technical Summary
In the prior art, insulating foam glue is attached to the inner side of the iron frame of the backlight source easily due to artificial operation problems and excessive thickness of the finished product, resulting in disassembly and repairing of the entire LCM module, causing economic losses and quality to be guaranteed.
Design a backlight reflective film insulated foam glue structure, including installing a reflective film in the backlight iron frame, and setting pre-breaking lines and folding edge areas on both sides of the reflective film, and sticking the reflective film in the iron frame by bending it to replace the original Foam glue improves softness and fixity, and evenly distributes light through the light guide plate and the light-enhancing sheet layer.
It effectively reduces production processes, reduces costs, improves production efficiency, reduces repair rate, and ensures the stability of product quality.
Smart Images
Figure CN222189661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backlight sources for liquid crystal displays, in particular to a backlight source reflective film insulating foam adhesive structure. Background Art
[0002] Liquid crystal displays (LCDs) are widely used in the field of display technology. Liquid crystal displays are usually achieved by two pieces of conductive glass forming an electric field to drive the liquid crystal located between the conductive glass to achieve the display function. However, liquid crystal itself cannot emit light, so an external light source is required to truly achieve the display function, usually by adding a backlight structure with LEDs or other external light sources.
[0003] Usually, if the backlight is to be designed with ultra-narrow bezels, the display area must be increased and the width of the four sides must be reduced. The conventional practice is to cancel the rubber frame and only use the thickness of the iron frame material plus a layer of insulating foam glue, so that the smallest edge can be achieved. The production process is to stick insulating foam glue on the inside of the iron frame of the backlight source, which can isolate the OC contact with the module and prevent the OC edge from contacting the iron frame of the backlight, causing problems such as broken screens and abnormal pictures. However, this method often causes problems such as skewed pasting and excessive thickness of the finished product due to human manipulation. Once a problem occurs, the entire LCM module will be disassembled and repaired, which will cause significant economic losses to the company and customers, and the quality cannot be guaranteed. Utility Model Content
[0004] 1. Technical issues to be solved
[0005] In view of the deficiencies in the prior art, the utility model provides a backlight reflective film insulating foam glue structure, which has the advantages of good quality control, reduced raw material costs, reduced production processes and significantly reduced indirect finished product rework rate, etc. It solves the problem that the method of sticking insulating foam glue on the inner side of the iron frame of the backlight source often leads to skewed sticking and excessive thickness of the finished product due to human manipulation problems. Once a problem occurs, the entire LCM module will be disassembled and reworked, which will cause significant economic losses to the company and customers and the problem that quality cannot be guaranteed.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a backlight source reflective film insulating foam glue structure, comprising a backlight source iron frame, a reflective film is installed inside the backlight source iron frame, two sides of the reflective film are respectively arranged as a reflective surface and a non-reflective surface, pre-broken lines are arranged on the left and right sides of the reflective surface, and a backing glue is arranged on the bottom of the non-reflective surface.
[0008] Preferably, the side opposite to the two pre-broken lines is set as a folding area, and the side opposite to the two pre-broken lines is set as a reflective area. The reflective film is divided into a front and a back side. The two sides of the front side of the reflective film are pre-broken to enhance the softness during the bending process of the reflective film. The folding area is the inner height difference of the iron frame structure of the backlight source. Usually, the range of this height difference is 0.1-0.2mm less than the height inside the iron frame of the backlight source. The bottom of the back side of the reflective film is usually the bottom edge of the backlight source, and double-sided tape is required to fix the reflective film in the iron frame to prevent it from moving.
[0009] Preferably, a light source assembly is installed at the bottom of the front side of the backlight source iron frame, a light guide plate is arranged on the top of the reflective film, a film material layer is arranged on the top of the light guide plate, a FOG screen is arranged on the top of the film material layer, and the light emitted by the light source assembly is reflected by the reflective film layer to ensure that the light can pass through the light guide plate to the diffusion layer so that the light is transmitted to the upper and lower light-enhancing layers more evenly, and the upper and lower light-enhancing layers are evenly arranged with prisms that cross each other at specified angles to ensure that the light emitted from the upper light-enhancing layer to the shading patch layer is uniformly vertical, thereby ensuring that the light on the shading patch layer is evenly distributed.
[0010] Compared with the prior art, the utility model provides a backlight source reflective film insulating foam adhesive structure, which has the following beneficial effects:
[0011] The backlight source reflective film insulating foam adhesive structure, by setting a reflective film, when the reflective film of the backlight source is artificially bent on both sides and then attached to the iron frame of the backlight source, it plays a role of reflecting and emitting light from the backlight source, and at the same time replaces the foam adhesive attached to both sides of the original backlight source iron frame, thereby effectively reducing the production process, improving production efficiency and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the insulating foam adhesive structure of the backlight reflective film of the utility model;
[0013] Figure 2 This is a schematic diagram of the reflective surface structure of the utility model;
[0014] Figure 3 This is a schematic diagram of the non-reflective surface structure of the utility model.
[0015] Among them: 1. Backlight iron frame; 2. Reflective film; 3. Reflective surface; 4. Non-reflective surface; 5. Pre-broken wires; 6. Adhesive backing; 7. Folding edge area; 8. Light source assembly; 9. Light guide plate; 10. Film material layer; 11. FOG screen. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0017] See also Figure 1-3 A backlight source reflective film insulating foam adhesive structure includes a backlight source iron frame 1, which plays a supporting role. A reflective film 2 is installed inside the backlight source iron frame 1. The reflective film 2 is a reflective film, which plays a role of reflecting and refracting a light source component 8 from a light guide plate 9. When the reflective film 2 of the backlight source is bent on both sides and attached to the backlight source iron frame 1, it plays a role of reflecting and refracting the light source of the backlight source, and at the same time replaces the foam adhesive attached to both sides of the original backlight source iron frame 1, thereby effectively reducing the production process, improving production efficiency, and reducing costs. The two sides of the reflective film 2 are respectively set as reflective surfaces 3 and a non-reflective surface 4, pre-broken lines 5 are arranged on the left and right sides of the reflective surface 3, the reflective film 2 directly replaces the structure of the insulating foam glue on both sides of the inner side of the iron frame, the folding height of the iron frame is increased on both sides of the reflective film 2 of the backlight source, and the light guide plate 9 is flat on the side of the light bar. The reflective film 2 is pre-broken at the position where the two sides of the iron frame contact, which is convenient for folding during production and manufacturing, thereby optimizing the backlight source manufacturing process. The side opposite to the two pre-broken lines 5 is set as a folding area 7, and the side opposite to the two pre-broken lines 5 is set as a reflective area. The bottom of the non-reflective surface 4 is provided with a backing glue 6, and a light source assembly 8 is installed at the bottom of the front side of the backlight source iron frame 1. The component 8 includes a light guide plate 9 and an LED light source. A groove for fixing the LED light source is provided on at least one side of the side of the light guide plate 9. The LED light source is an edge-view structure in which the LED is adhered to the FPC substrate. The LED light source can be a single-chip LED package, a multi-chip LED package, or a single-chip LED and multi-chip LED mixed package. A light guide plate 9 is provided on the top of the reflective film 2. The light guide plate 9 can be a resin plastic with good light transmittance such as polypropylene or polymethyl methacrylate. A film material layer 10 is provided on the top of the light guide plate 9. A FOG screen 11 is provided on the top of the film material layer 10. The backlight source It includes a reflective film layer, a light source component, a diffuser layer, at least one light-enhancing film layer, and a shading patch layer. The reflective film layer, the light source component, the diffuser layer, the light-enhancing film layer, and the shading patch layer are sequentially arranged and fixed in the inner frame of the backlight source iron frame 1. The light emitted by the light source component 8 is reflected by the reflective film layer to ensure that the light can pass through the light guide plate 9 to the diffuser layer so that the light is more evenly transmitted to the upper and lower light-enhancing film layers. The upper and lower light-enhancing layers are evenly arranged with prisms that cross each other at specified angles to ensure that the light emitted from the upper light-enhancing film layer to the shading patch layer is evenly vertical, thereby ensuring that the light on the shading patch layer is evenly distributed.
[0018] When in use, the reflective film 2 is divided into a front and a back side. The two sides of the front side of the reflective film 2 are pre-cut to enhance the softness of the reflective film 2 during the bending process. The folding area 7 is the inner height difference of the backlight source iron frame 1 structure. Usually, the range of this height difference is 0.1-0.2mm less than the height inside the backlight source iron frame 1. The bottom of the back side of the reflective film 2 is the bottom edge of the backlight source, and double-sided tape is required to fix the reflective film 2 in the iron frame to prevent it from moving. When the reflective film 2 of the backlight source is artificially bent on both sides and affixed to the backlight source iron frame 1, it plays a reflective and de-reflective role of the backlight source, and at the same time replaces the foam glue affixed to both sides of the original backlight source iron frame 1, thereby effectively reducing the production process, improving production efficiency and reducing costs. The insulating foam adhesive structure of the backlight source reflective film reduces the cost of raw materials and the production process of the backlight by designing a folded edge structure for the backlight source reflective film 2, which will not increase the production cost and has good application prospects. At the same time, the backlight source reflective film 2 replaces the insulating foam adhesive structure attached to the inner side of the iron frame, saving the production cost of the entire backlight source.
[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A backlight source reflective film insulating foam adhesive structure, comprising a backlight source iron frame (1), characterized in that: A reflective film (2) is installed inside the backlight source iron frame (1), and two sides of the reflective film (2) are respectively arranged as a reflective surface (3) and a non-reflective surface (4), and pre-broken wires (5) are arranged on both left and right sides of the reflective surface (3), and a backing adhesive (6) is arranged at the bottom of the non-reflective surface (4).
2. The backlight source reflective film insulating foam adhesive structure according to claim 1, characterized in that: The side opposite to each other of the two pre-broken lines (5) is set as a folding area (7), and the side opposite to each other of the two pre-broken lines (5) is set as a reflection area.
3. The backlight source reflective film insulating foam adhesive structure according to claim 1, characterized in that: A light source assembly (8) is installed at the bottom of the front side of the backlight source iron frame (1), a light guide plate (9) is arranged on the top of the reflective film (2), a film material layer (10) is arranged on the top of the light guide plate (9), and a FOG screen (11) is arranged on the top of the film material layer (10).