Structure for improving brightness of backlight source
By using a structure combining reflective film and white reflective single-sided adhesive in the backlight source, the brightness of the backlight is improved and the process flow is simplified, solving the problems of low brightness and complex process of the existing backlight source, and achieving higher brightness and Lower cost.
Patent Information
- Application Number
- CN202420403187.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-04
AI Technical Summary
The existing backlights have low brightness and complex assembly processes, resulting in high production costs and affecting product yield.
The reflective film is set at the bottom of the light guide plate, and the lower iron frame and white reflective single-sided adhesive are set on the outside. The LED is located between the side of the light guide plate and the lower iron frame. The top is combined with the reflective strip, and the optical double-sided adhesive is eliminated and the ordinary double-sided adhesive is used instead. Glue to enhance brightness.
Increase the brightness of the backlight by 12-15%, simplify the process, reduce production costs, and improve product yield.
Smart Images
Figure CN222213155U_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 structure for improving the brightness of backlight sources. Background Art
[0002] Liquid crystal displays (LCDs) are widely used in the field of display technology. Liquid crystal display is 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 it is necessary to use an external light source to truly achieve the display function, usually by adding a backlight structure with LED or other external light sources. Usually, the backlight assembly process is to stick an optical double-sided tape on the FPC in front of the LED, and the light guide plate and the FPC are bonded to the front end of the LED with double-sided tape. The LED light is guided from the side of the light guide plate into the inside of the light guide plate, and then the light is refracted and reflected through the light guide plate mesh and reflection, guiding the light source to provide a uniform light source to the LCD. However, the backlight brightness of this type of backlight assembly process is not high, and the process is relatively complicated and the production cost is high. Therefore, a structure for improving the brightness of the backlight source is proposed. Utility Model Content
[0003] In view of the shortcomings of the prior art, the utility model provides a structure for improving the brightness of the backlight source, which has the advantages of increasing the backlight brightness by 12-15%, making the process simpler, reducing production costs, and improving product yield, thereby solving the problems of low backlight brightness, complex process and high production cost.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a structure for improving the brightness of a backlight source, comprising a light guide plate, a reflective film is arranged at the bottom of the light guide plate, a lower iron frame is arranged on the outer sides of the light guide plate and the reflective film, a white reflective single-sided adhesive is arranged between the lower iron frame and the reflective film, one end of the white reflective single-sided adhesive is pressed on the bottom of the reflective film, and the other end is pressed on the bottom of the light guide plate, an FPC is arranged at the bottom where the white reflective single-sided adhesive is pressed on one end of the light guide plate, an LED is arranged on the top of the FPC, the LED is located between the side of the light guide plate and the inside of the lower iron frame, a reflective strip is arranged between the top of the light guide plate and the lower iron frame, and an LCD is arranged on the top of the reflective strip exposed to the outside.
[0005] Preferably, the white reflective single-sided adhesive can be divided into two sides, the front side without adhesive and the back side with adhesive. The front side without adhesive is placed in front of the LED light source to reflect the light emitted by the LED, and the back side with adhesive is used to stick and fix the FPC to the lower iron frame.
[0006] Compared with the prior art, the utility model provides a structure for improving the brightness of the backlight source, which has the following beneficial effects:
[0007] 1. The structure for improving the brightness of the backlight source does not use glue in front of the LED lamp, because the reflective film itself has a higher reflectivity than the glue, so that the assembly method without glue solution is better than the backlight source assembled by using LED lamp glue. The optical double-sided tape is replaced by ordinary double-sided tape, which improves the backlight brightness by 12-15%, and has a good application prospect.
[0008] 2. The backlight brightness structure can be improved by changing the production process to make the process simpler, reduce production costs and improve product yield. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a partial side view enlarged structural schematic diagram of the utility model;
[0010] Figure 2 It is an exploded schematic diagram of the structure of the utility model.
[0011] Among them: 1. Light guide plate; 2. Reflective film; 3. Lower iron frame; 4. White reflective single-sided tape; 5. FPC; 6. LED; 7. Reflective strip; 8. LCD. DETAILED DESCRIPTION
[0012] 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.
[0013] See also Figure 1-2 The utility model provides the following technical solutions: a structure for improving the brightness of a backlight source, comprising a light guide plate 1, a reflective film 2 is arranged at the bottom of the light guide plate 1, a lower iron frame 3 is arranged on the outer sides of the light guide plate 1 and the reflective film 2, a white reflective single-sided adhesive 4 is arranged between the lower iron frame 3 and the reflective film 2, one end of the white reflective single-sided adhesive 4 is pressed on the bottom of the reflective film 2, and the other end is pressed on the bottom of the light guide plate 1, an FPC 5 is arranged at the bottom of one end of the white reflective single-sided adhesive 4 pressed on the light guide plate 1, an LED 6 is arranged on the top of the FPC 5, the LED 6 is located between the side of the light guide plate 1 and the inside of the lower iron frame 3, a reflective strip 7 is arranged between the top of the light guide plate 1 and the lower iron frame 3, and an LCD 8 is arranged on the top of the reflective strip 7 exposed to the outside;
[0014] The white reflective single-sided adhesive 4 can be divided into a front side and a back side, the front side has no adhesive and the back side has adhesive. The front side without adhesive is in front of the LED 6 light source to reflect the light emitted by the LED 6, and the back side with adhesive is used to stick and fix the FPC 5 to the lower iron frame 3.
[0015] When in use, a reflective film 2 is arranged at the bottom of the light guide plate 1, a lower iron frame 3 is arranged on the outer side of the light guide plate 1 and the reflective film 2, a white reflective single-sided adhesive 4 is arranged between the lower iron frame 3 and the reflective film 2, one end of the white reflective single-sided adhesive 4 is pressed on the bottom of the reflective film 2, and the other end is pressed on the bottom of the light guide plate 1, an FPC 5 is arranged at the bottom of one end of the white reflective single-sided adhesive 4 pressed on the light guide plate 1, an LED 6 is arranged on the top of the FPC 5, the LED 6 is located between the side of the light guide plate 1 and the inside of the lower iron frame 3, a reflective strip 7 is arranged between the top of the light guide plate 1 and the lower iron frame 3, and the reflective strip 7 is exposed at the top of the outside LCD8 is provided, and white reflective single-sided adhesive 4 can be divided into a front side and a back side, the front side is without adhesive, and the back side is with adhesive. The front side without adhesive is in front of LED6 light source to reflect the light emitted by LED6, and the back side with adhesive is used to stick and fix FPC5 and lower iron frame 3. Adhesion is not applied in front of LED6 lamp because the reflective film itself has a higher reflectivity than adhesive. Therefore, the assembly method without adhesive scheme is better than the backlight source assembled by using LED lamp adhesive scheme. The optical double-sided adhesive is cancelled and ordinary double-sided adhesive is used instead, which improves the backlight brightness by 12-15%, and has a good application prospect.
[0016] Although the 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 structure for improving the brightness of a backlight source, comprising a light guide plate (1), characterized in that: A reflective film (2) is arranged at the bottom of the light guide plate (1), a lower iron frame (3) is arranged on the outer sides of the light guide plate (1) and the reflective film (2), a white reflective single-sided adhesive (4) is arranged between the lower iron frame (3) and the reflective film (2), one end of the white reflective single-sided adhesive (4) is pressed on the bottom of the reflective film (2), and the other end is pressed on the bottom of the light guide plate (1), an FPC (5) is arranged at the bottom of one end of the white reflective single-sided adhesive (4) pressed on the light guide plate (1), an LED (6) is arranged at the top of the FPC (5), the LED (6) is located between the side of the light guide plate (1) and the inside of the lower iron frame (3), a reflective strip (7) is arranged between the top of the light guide plate (1) and the lower iron frame (3), and an LCD (8) is arranged at the top of the reflective strip (7) exposed to the outside.
2. The structure for improving backlight brightness according to claim 1, characterized in that: The white reflective single-sided adhesive tape (4) can be divided into two sides, a front side and a back side, wherein the front side is free of adhesive and the back side is provided with adhesive.