An LED backlight module reflection structure to improve vitiligo

Abstract

This utility model discloses a reflective structure for an LED backlight module that improves white spot appearance, including an LED backplate; a metal frame: LED light strips are installed on the inner side of the metal frame along its length; a light guide module: the light guide module is used to enhance and diffuse the light emitted by the LED light strips, and includes a reflective film, a white single-sided adhesive pad, a light guide plate, and a functional film assembly. The reflective film is fixedly bonded to the top of the LED backplate, and a light guide plate is arranged parallel to it above the reflective film. The light guide plate and the reflective film are separated by a white single-sided adhesive pad, leaving a gap between them. The functional film assembly is fixedly installed on the upper part of the light guide plate. The light guide module is located in the cavity enclosed by the LED backplate and the metal frame. This invention improves the white spot appearance problem by adding a white single-sided adhesive pad between the light guide plate and the reflective film, creating a gap between them. During reliability testing, foreign objects have a buffer space inside, preventing direct friction damage to the light guide plate.

Description

Technical Field

[0001] This utility model relates to the field of LED backlight module technology, and in particular to an LED backlight module reflection structure that improves white spots. Background Technology

[0002] As end-users increasingly demand higher reliability from their devices, LED backlight modules face unprecedentedly stringent testing conditions (mechanical shock testing, environmental testing), significantly increasing the probability of white spots appearing. The LED backlight manufacturing process involves material dust removal, assembly, adsorption inspection, vibration screening, and shipment. After assembly into modules, the probability of white spots appearing during mechanical shock and environmental testing is very high. In traditional backlight designs, materials are stacked layer by layer. During mechanical shock and environmental testing, non-compliant foreign objects at the edges move towards the light-emitting area. Since there is no gap between the LED backlight plate (LGP) and the reflector, these foreign objects rub against each other, causing damage to the LGP and reflector surfaces. Since the LGP is the light-emitting element, the damaged areas will exhibit white spots. Utility Model Content

[0003] The purpose of this application is to provide an improved reflective structure for LED backlight modules with white spots, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: an LED backlight module reflection structure for improving white spots, comprising:

[0005] LED back panel;

[0006] Metal frame: An LED light strip is installed on the inner side of the metal frame, which is arranged along its length.

[0007] Light guide module: The light guide module is used to enhance and diffuse the light emitted by the LED light strip. The light guide module includes a reflective film, a white single-sided adhesive pad, a light guide plate, and a functional film assembly. The reflective film is fixedly bonded to the top of the LED back panel. A light guide plate is arranged parallel to the reflective film above it. The light guide plate and the reflective film are separated by the white single-sided adhesive pad, leaving a gap between them. The functional film assembly is fixedly installed on the upper part of the light guide plate. The light guide module is located in the cavity enclosed by the LED back panel and the metal frame.

[0008] Preferably, the functional film assembly includes a diffusion film and a brightness enhancement film, which are fixedly connected sequentially from bottom to top, with the bottom end of the diffusion film fixed to the top end of the light guide plate.

[0009] Preferably, a light-shielding adhesive is fixedly installed on the upper part of the metal frame near its inner edge, and the light-shielding adhesive blocks the gap between the light guide module and the inner wall of the metal frame.

[0010] Preferably, the white single-sided adhesive pad is elongated and there are two of them symmetrically fixed to the top of the reflective film near the two side edges, and the top of the white single-sided adhesive pad is fixedly connected to the bottom of the light guide plate.

[0011] Preferably, the metal frame is made of aluminum alloy, and the outer wall of the metal frame is coated with an antistatic coating.

[0012] Preferably, the inner sidewall of the metal frame is provided with an LED light strip mounting groove arranged along its length, and the LED light strip is installed in the LED light strip mounting groove.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] The LED backlight module reflection structure provided in this utility model improves the white spot effect by adding a white single-sided adhesive pad between the light guide plate and the reflective film to create a gap between them. During reliability testing, foreign objects have a buffer space inside and will not directly cause friction damage to the light guide plate. The white single-sided adhesive pad is located outside the light-emitting area, so it will not cause any taste or optical problems, and it can be mass-produced. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the reflective structure of an LED backlight module for improving vitiligo in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the reflective structure of a prior art LED backlight module in an embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the installation structure of a white single-sided adhesive pad for improving the reflection structure of an LED backlight module in an embodiment of this application.

[0019] In the diagram: 1. LED backplate; 2. Metal frame; 3. Reflective film; 4. White single-sided adhesive pad; 5. Light guide plate; 6. Diffuser film; 7. Brightness enhancement film; 8. Light-shielding adhesive; 9. LED strip mounting groove; 10. LED strip. Detailed Implementation

[0020] 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.

[0021] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] It should also be noted that all standard parts used in this application are commercially available, and can be custom-made according to the description and drawings. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances, and unless explicitly limited, machinery, parts, and equipment can all adopt conventional models in the prior art.

[0023] In this document, the term "comprising" is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0024] Example: Reference Figure 1 and 3 The LED backlight module reflection structure shown includes an LED backplate 1, which improves the reflection of white spots.

[0025] Metal frame 2: An LED light strip 10 is installed on the inner side of the metal frame 2 along its length direction;

[0026] Light guide module: The light guide module is used to enhance and diffuse the light emitted by the LED light strip 10. The light guide module includes a reflective film 3, a white single-sided adhesive pad 4, a light guide plate 5, and a functional film assembly. The reflective film 3 is fixedly bonded to the top of the LED backplate 1. A light guide plate 5 is arranged parallel to the reflective film 3 above it. The light guide plate 5 and the reflective film 3 are separated by the white single-sided adhesive pad 4, leaving a gap between them. The functional film assembly is fixedly installed on the upper part of the light guide plate 5. The light guide module is located in the cavity enclosed by the LED backplate 1 and the metal frame 2. The LED backlight module reflection structure for improving white spots provided in this utility model provides a buffer space for foreign objects during reliability testing by adding a white single-sided adhesive pad between the light guide plate and the reflective film, thus preventing direct friction damage to the light guide plate. The white single-sided adhesive pad is located outside the light-emitting area, preventing odor and optical problems, and enabling mass production.

[0027] With the above structure: the functional film group includes a diffusion film 6 and a brightness enhancement film 7, which are fixedly connected from bottom to top. The bottom end of the diffusion film 6 is fixed to the top end of the light guide plate 5. The diffusion film 6 and the brightness enhancement film 7 are used to uniformly diffuse light and enhance brightness, respectively.

[0028] With the above structure, a light-shielding adhesive 8 is fixedly installed on the upper part of the metal frame 2 near its inner edge. The light-shielding adhesive 8 blocks the gap between the light guide module and the inner wall of the metal frame 2 to shield the non-light-emitting area.

[0029] With the above structure: the white single-sided adhesive pad 4 is long and strip-shaped, and there are two of them symmetrically fixed at the top of the reflective film 3 near the two side edges. The top of the white single-sided adhesive pad 4 is fixedly connected to the bottom of the light guide plate 5.

[0030] With the above structure: the metal frame 2 is made of aluminum alloy material, and the outer wall of the metal frame 2 is coated with an antistatic coating for antistatic protection.

[0031] With the above structure: the inner sidewall of the metal frame 2 is provided with an LED light strip mounting groove 9 arranged along its length direction, and the LED light strip 10 is installed in the LED light strip mounting groove 9. The LED light strip can dissipate heat through the metal frame.

[0032] The working principle of this embodiment is as follows: Figure 2The diagram shows the installation method of an existing LED backlight module, in which the internal light guide modules are directly fixed and stacked layer by layer. Therefore, there is no gap between the reflective film and the light guide plate. During reliability testing, impurities will directly damage the light guide plate. This new invention adds a white single-sided adhesive pad between the light guide plate and the reflective film to create a gap between them. During reliability testing, foreign objects have a buffer space inside and will not directly cause friction damage to the light guide plate. The white single-sided adhesive pad is located at the periphery of the light-emitting viewing area, so it will not cause any odor or optical problems, and it can be mass-produced.

[0033] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A reflective structure for an LED backlight module that improves vitiligo, characterized in that: include: LED backplate (1); Metal frame (2): An LED light strip (10) is installed on the inner side of the metal frame (2) along its length direction; Light guide module: The light guide module is used to enhance and diffuse the light emitted by the LED light strip (10). The light guide module includes a reflective film (3), a white single-sided adhesive pad (4), a light guide plate (5), and a functional film group. The reflective film (3) is fixedly bonded to the top of the LED back plate (1). A light guide plate (5) is provided above the reflective film (3) and is arranged parallel to it. The light guide plate (5) and the reflective film (3) are separated by the white single-sided adhesive pad (4) so ​​that there is a gap between the light guide plate (5) and the reflective film (3). The functional film group is fixedly installed on the upper part of the light guide plate (5). The light guide module is located in the cavity enclosed by the LED back plate (1) and the metal frame (2).

2. The LED backlight module reflection structure for improving vitiligo according to claim 1, characterized in that: The functional film assembly includes a diffusion film (6) and a brightness enhancement film (7), which are fixedly connected from bottom to top. The bottom end of the diffusion film (6) is fixed to the top end of the light guide plate (5).

3. The LED backlight module reflection structure for improving vitiligo according to claim 1, characterized in that: A light-shielding adhesive (8) is fixedly installed on the upper part of the metal frame (2) near its inner edge. The light-shielding adhesive (8) blocks the gap between the light guide module and the inner wall of the metal frame (2).

4. The LED backlight module reflection structure for improving vitiligo according to claim 1, characterized in that: The white single-sided adhesive pad (4) is long and narrow, and there are two of them symmetrically fixed at the top of the reflective film (3) near the two side edges. The top of the white single-sided adhesive pad (4) is fixedly connected to the bottom of the light guide plate (5).

5. The LED backlight module reflection structure for improving vitiligo according to claim 1, characterized in that: The metal frame (2) is made of aluminum alloy and the outer wall of the metal frame (2) is coated with an antistatic coating.

6. The LED backlight module reflection structure for improving vitiligo according to claim 1, characterized in that: The inner sidewall of the metal frame (2) is provided with an LED light strip mounting groove (9) arranged along its length direction, and the LED light strip (10) is installed in the LED light strip mounting groove (9).

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