Integrated ultra-narrow frame backlight structure of display screen

Abstract

The utility model discloses an integrated ultra-narrow frame backlight structure of a display screen. The integrated ultra-narrow frame backlight structure comprises an integrated die-casting backboard, a heat-conducting double-faced adhesive tape, a light bar, a reflector plate double-faced adhesive tape, a reflector plate, an L-shaped silica gel limiting pad, a light guide plate, a diaphragm double-faced adhesive tape, an optical diaphragm and a middle metal plate. The integrated die-casting back plate is a display screen appearance part, a vehicle-mounted installation foot structure is designed on the back face of the integrated die-casting back plate, a conventional backlight containing cavity is designed in the front face of the integrated die-casting back plate, pre-fixing corner sinking grooves for installing L-shaped silica gel limiting pads are designed in the two corners of the backlight containing cavity, and a middle metal plate clamping structure is designed on one side wall of the integrated die-casting back plate. And a structural adhesive dispensing step surface connected with the display screen is designed on the other side wall. The integrated die-casting back plate is adopted, the appearance is more attractive, the thickness can be extremely thin, the backlight inner light guide plate is installed and limited more stably, the width of a backlight frame can be designed to be very close to the width of a liquid crystal glass black edge, and the dispensing curing connection width of a display screen can be designed to be very small.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen technical field especially a kind of integral type extremely narrow frame backlight structure of display screen. BACKGROUND

[0002] Display screen is currently widely used electronic display device, such as vehicle-mounted instrument, mobile phone, computer, television, billboard, industrial control, medical equipment and aerospace etc., so that we can clearly see image and text, to us transmit various information. With the development of display industry, electronization, new energy, light weight, multi-screen, extremely thin and extremely narrow frame become the new trend of development of display industry, especially the demand for liquid crystal screen display is increasing, and the demand for related light and thin structure, extremely thin and extremely narrow frame design is also increasing.

[0003] With the rapid development of display industry, the thickness requirement of display screen is thinner and thinner, the frame requirement is narrower and narrower, and the thinner and narrower product saves the space of display screen, and the light and thin and extremely narrow frame display screen has greatly increased in application demand in various fields. SUMMARY

[0004] In order to solve the technical problem of the extremely narrow frame of the display screen, the utility model provides an extremely narrow frame backlight structure, the backlight frame width is very close to the black edge width of liquid crystal glass, the display screen point glue curing connection width is very small, and the design requirement of the extremely narrow frame backlight structure is met.

[0005] The utility model solves its technical problem by adopting the following technical scheme:

[0006] An integral type extremely narrow frame backlight structure of display screen, comprising an integral type die-casting back plate, a heat-conducting double-sided adhesive, a light bar, a reflective sheet double-sided adhesive, a reflective sheet, an L-shaped silica gel limiting pad, a light guide plate, a diaphragm double-sided adhesive, an optical diaphragm and a middle sheet metal.

[0007] The integral type die-casting back plate is a display screen appearance part, the back surface thereof is designed with a vehicle-mounted mounting foot structure, and the front surface thereof is designed with a conventional backlight accommodating cavity, two corners of the backlight accommodating cavity are designed with pre-fixed corner grooves provided with L-shaped silica gel limiting pads, one side wall of the integral type die-casting back plate is designed with a middle sheet metal clamping structure, and the other side wall is designed with a structure glue dispensing step surface connected with the display screen.

[0008] Further, the light bar is pasted on the side surface of the integral type die-casting back plate through the heat-conducting double-sided adhesive.

[0009] Further, the reflective sheet is fixed on the bottom surface of the backlight accommodating cavity of the integral type die-casting back plate through the reflective sheet double-sided adhesive, and is limited by the cavity boundary around.

[0010] Further, the L-shaped silica gel limiting pad is pre-fixed in the two corner recesses of the backlight accommodating cavity of the one-piece die-casting back plate.

[0011] Further, the light guide plate is fixed in the one-piece die-casting back plate through contact with the two lower corner end faces of the assembled light bar and compression interference fit of the two upper corner L-shaped silica gel limiting pads.

[0012] Further, the optical film is fixed on the assembled light guide plate through the film double-sided adhesive and the film positioning protrusions on the light entry side of the light guide plate.

[0013] According to the brightness requirement, a plurality of optical films can be fixed on the optical film through the film fixing double-sided adhesive.

[0014] Further, the middle sheet metal is assembled into a backlight assembly through cooperation of the self-clamping hooks and the clamping structures designed on the side walls of the one-piece die-casting back plate.

[0015] Further, the backlight assembly is connected with the display screen through the structure adhesive point step surface of the side wall of the one-piece die-casting back plate, and is connected with the whole vehicle through the vehicle-mounted mounting foot structure on the back surface of the one-piece die-casting back plate.

[0016] Compared with the prior art, the technical advantages and beneficial effects of the present application are as follows:

[0017] The one-piece die-casting back plate is adopted, the appearance is more beautiful, the thickness can be made extremely thin, the installation and limiting of the light guide plate in the backlight are more stable, the backlight frame width can be designed to be very close to the liquid crystal glass black edge width, the display screen point adhesive curing connection width can be designed to be very small, the width of the frame around the non-display area of the display device is minimized, the design requirements of the extremely narrow frame backlight structure are met, the production process can be simplified, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings are used to provide further understanding of the structure of the present application, and constitute a part of the specification, and are used together with the specific embodiments below to explain the present application, but do not constitute a limitation on the present application.

[0019] Figure 1 is a structure diagram of the one-piece extremely narrow frame backlight assembly of the embodiment of the present application.

[0020] Figure 2 is an exploded view of the one-piece extremely narrow frame backlight of the embodiment of the present application.

[0021] Figure 3 is a structure diagram of the one-piece die-casting back plate of the embodiment of the present application.

[0022] Figure 4 is a structure diagram of the light guide plate of the embodiment of the present application.

[0023] The reference signs are explained as follows: 1. an integrated die-casting back plate, 2. a heat-conducting double-sided adhesive, 3. a light bar, 4. a reflector double-sided adhesive, 5. a reflector, 6. a light guide plate, 7. a film double-sided adhesive, 8. an optical film, 9. a middle sheet metal, and 10. an L-shaped silica gel limiting pad.

[0024] The integrated die-casting back plate 1 comprises: 1-1. a backlight accommodating cavity, 1-2. corner recesses, 1-3. clamping structures, 1-4. structure adhesive gluing step surfaces, 1-5. vehicle-mounted mounting foot structures, and 1-6. a display screen appearance part.

[0025] 6-1. an in-light-side film positioning protrusion. DETAILED DESCRIPTION

[0026] The technical structural schemes in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the utility model examples, and the described embodiments are only some of the embodiments of the utility model structure, rather than all the embodiments. The additional technical features of the utility model and its advantages will be more obvious in the following description, or can be understood through the specific practice of the utility model.

[0027] As shown in Figs. 1 and 2, the utility model mainly comprises 10 main parts, and the direct positions, connections and functional relationships of the parts are as follows: Figure 1 2 As shown in Figs. 1 and 2, the utility model mainly comprises 10 main parts, and the direct positions, connections and functional relationships of the parts are as follows:

[0028] The integrated die-casting back plate 1 and the light bar 3 are fixedly adhered by the heat-conducting double-sided adhesive 2. The integrated die-casting back plate 1 and the reflector 5 are fixedly adhered by the reflector double-sided adhesive 4.

[0029] The L-shaped silica gel limiting pad 10 is pre-fixed in the corner recesses 1-2 of the backlight accommodating cavity 1-1 of the integrated die-casting back plate 1.

[0030] The light guide plate 6 is fixedly assembled in the integrated die-casting back plate 1 by contacting two lower corner end surfaces of the assembled light bar 3 and two upper corner L-shaped silica gel limiting pads 10.

[0031] The optical film 8 is fixed on the light guide plate 6 by the film double-sided adhesive 7 and the in-light-side film positioning protrusion 6-1 of the light guide plate 6. According to the brightness requirement, multiple optical films can be fixed on the optical film 8 by the film double-sided adhesive 7.

[0032] The middle sheet metal 9 is assembled into a backlight assembly by cooperating with the clamping structures 1-3 designed on the side wall of the integrated die-casting back plate 1 through the self clamping hooks.

[0033] ​The backlight assembly utilizes the structure glue point of the side wall of the one-piece die-casting back plate 1 to connect the display screen to various fields of application, and becomes the backlight part of the electronic display device. The backlight assembly utilizes the vehicle-mounted mounting foot structure 1-5 on the back of the one-piece die-casting back plate 1 to connect with the whole vehicle.

[0034] The display screen appearance part 1-6 directly serves as the display screen appearance part of the electronic display device for display.

[0035] The assembling process of the utility model is as follows:

[0036] Reference Figure 3 and Figure 4 First, the heat-conducting double-sided adhesive tape 2 is attached to the lamp strip 3, then the heat-conducting double-sided adhesive tape 2 is attached to the side of the one-piece die-casting back plate 1, then the reflective sheet double-sided adhesive 4 is fixed in the backlight accommodating cavity 1-1, then the reflective sheet 5 is fixed and positioned by the reflective sheet double-sided adhesive 4 and the boundary of the backlight accommodating cavity 1-1, then the light guide plate 6 is fixed in the backlight accommodating cavity 1-1 by being in contact with the two lower corner end faces of the assembled lamp strip 3 and being compressed into interference fit with the two upper corner L-shaped silica gel limiting pads 10, then the diaphragm double-sided adhesive 7 is attached to the light guide plate 6, the optical diaphragm 8 is fixed on the light guide plate 6 by being limited by the light-entrance-side diaphragm positioning protrusions 6-1 of the light guide plate 6 and the diaphragm double-sided adhesive 7, and finally the middle metal sheet 9 is assembled into a backlight assembly by cooperating with the clamping structure 1-3 designed on the side wall of the one-piece die-casting back plate 1 through the self clamping hook.

[0037] The backlight assembly utilizes the structure glue point of the side wall of the one-piece die-casting back plate 1 to connect the display screen to various fields of application, and becomes the backlight part of the electronic display device. The backlight assembly utilizes the vehicle-mounted mounting foot structure 1-5 on the back of the one-piece die-casting back plate 1 to connect with the whole vehicle. The appearance part 1-6 directly serves as the appearance part of the electronic display device for display.

[0038] The above embodiment adopts a one-piece die-casting back plate of a very unconventional design, the back of the one-piece die-casting back plate is designed as a display screen appearance part, the full-enclosed rear shell of a conventional design can be reduced to the extreme, cost reduction is achieved, the thickness can be extremely thin, and the appearance is more beautiful.

[0039] The back of the one-piece die-casting back plate is designed with a vehicle-mounted mounting foot structure, which can reduce the installation of an angle structure part, simplify the production process, and achieve cost reduction.

[0040] The front of the one-piece die-casting back plate is designed with a conventional backlight accommodating cavity, the two corner falls of the accommodating cavity are designed with light guide plate silica gel limiting pad placement grooves, and the installation and positioning of the light guide plate are more stable.

[0041] The side wall of the one-piece die-casting back plate is designed with a middle metal sheet clamping structure, and the frame width can be designed to be infinitely close to the liquid crystal glass black edge width.

[0042] The side wall of the one-piece die-cast back panel is designed with a structural glue dispensing step surface connected to the display screen, and the display screen dispensing and curing connection width can be designed to an extremely narrow frame.

[0043] The above embodiment adopts an unconventionally designed injection-molded light guide plate, and the light guide plate diaphragm positioning protrusions are designed on the light incident side of the light guide plate, eliminating the optical diaphragm positioning structure on the integrated die-cast back plate, which can reduce the width of the positioning structure that needs to be shielded by the frame, thereby achieving an extremely narrow frame.

Claims

1. An integrated, ultra-narrow-frame backlight structure for a display screen, comprising an integrated die-cast backplane, thermally conductive double-sided tape, a light bar, a reflector double-sided tape, a reflector, an L-shaped silicone limiter, a light guide plate, a diaphragm double-sided tape, an optical diaphragm, and a middle sheet metal, characterized by: The one-piece die-cast back panel is a display screen appearance part. Its back is designed with a vehicle-mounted mounting foot structure, and its front is designed with a conventional backlight accommodating cavity. The two corners of the backlight accommodating cavity are designed with pre-fixed corner grooves for installing L-shaped silicone limit pads. One side wall of the one-piece die-cast back panel is designed with a middle sheet metal snap-fit ​​structure, and the other side wall is designed with a structural glue dispensing step surface for connecting to the display screen.

2. The integrated ultra-narrow frame backlight structure of a display screen according to claim 1, characterized in that: The light strip is attached to the side of the integrated die-casting back panel by means of heat-conducting double-sided adhesive.

3. The integrated ultra-narrow frame backlight structure of a display screen according to claim 1, characterized in that: The reflector is fixed to the bottom surface of the backlight accommodating cavity of the integrated die-casting back plate by means of a double-sided adhesive tape, and is limited by cavity boundaries on all sides.

4. The integrated ultra-narrow frame backlight structure of a display screen according to claim 1, characterized in that: The L-shaped silicone limiting pads are pre-fixed in the two corner recesses of the backlight accommodating cavity of the integrated die-casting back panel.

5. The integrated ultra-narrow frame backlight structure of a display screen according to claim 1, characterized in that: The light guide plate is fixed in the integrated die-cast back plate by contacting the two lower corner end faces of the assembled light bar and compressing and interfering with the two upper corner L-shaped silicone limit pads.

6. The integrated ultra-narrow frame backlight structure of a display screen according to claim 1, characterized in that: The optical film is fixed on the assembled light guide plate by means of the double-sided adhesive tape of the film and the film positioning protrusions on the light incident side of the light guide plate.

7. The integrated ultra-narrow frame backlight structure of a display screen according to claim 1, characterized in that: The middle sheet metal is assembled into a backlight assembly through its own hooks and the engaging structure designed with the side wall of the integral die-cast back plate.

8. The integrated ultra-narrow frame backlight structure of a display screen according to claim 7, characterized in that: The backlight assembly is connected to the display screen using the structural glue dispensing step surface of the side wall of the integrated die-cast back panel, and is then connected to the entire vehicle using the vehicle-mounted mounting foot structure on the back of the integrated die-cast back panel.

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