CN220933320U

CN220933320U - Backlight module with color-changeable backboard

Info

Publication number: CN220933320U
Application number: CN202322833569.3U
Authority: CN
Inventors: 陶朝新; 杨震; 张伟
Original assignee: Shenzhen Chaoxian Technology Co ltd
Current assignee: Shenzhen Chaoxian Technology Co ltd
Priority date: 2023-10-20
Filing date: 2023-10-20
Publication date: 2024-05-10
Anticipated expiration: 2033-10-20

Abstract

The utility model relates to the technical field of side-in backlight modules, and provides a backlight module with a color-changeable backboard, which aims to solve the technical problems of thicker backlight module and exquisite appearance. Through structural change, cancel the structural optimization interval of center, the glass light guide plate is thinner, has reduced backlight unit's thickness on the whole for the complete machine structure is ultra-thin, makes the display have the display to switch the different time slots of machine to show the pattern of different colors through the coating structure, has improved the exquisite degree of display.

Description

Backlight module with color-changeable backboard

Technical Field

The utility model relates to the technical field of side-in backlight modules, in particular to a backlight module with a color-changeable backboard.

Background

In the existing display devices such as a display and a television, a side-in backlight or a direct-type backlight is adopted, wherein the side-in backlight is to arrange lamp beads on the periphery of the display device, and the common form is two sides of a display device or the bottom of the display device. The direct type backlight is characterized in that the lamp beads are arranged on the back of the display device, so that the display device of the direct type backlight is generally thicker than that of the side-in type backlight, the pursuit of the product modeling is continuously improved while the display effect and the service performance are pursued, the appearance is exquisite, the cost is low, the convenience of maintenance becomes one of the problems of continuous research, and the side-in type backlight is often adopted for the most slim and attractive design.

The side-in type LED backlight module comprises an LED light source and a light guide plate, wherein the light guide plate converts a linear light source into a surface light source, the LED light source is arranged on the side surface of the light guide plate, light emitted by LED packaging enters the light guide plate, and is reflected and scattered through a glass substrate reflecting plate to propagate towards the direction of a liquid crystal panel.

As shown in fig. 1, the existing backlight module is a set of iron back plate 7 as a main structure, and has a heat dissipation function, a front frame 2 is arranged on the right side of the iron back plate 7, a plastic middle frame 8 is arranged below the horizontal part of the front frame 2, and the plastic middle frame 8 separates the liquid crystal panel 1 from the optical film 3, so that a larger gap is reserved between the liquid crystal panel 1 and the optical film 3, and the thickness of the backlight module is larger; the backlight material can only be assembled from inside the machine in layers and is soft in overall strength. The light guide plate is generally made of plastic, the light guide rate of the plastic light guide plate 4 is low, the required brightness can be achieved only by increasing the luminous intensity of the lamp strip 5, the comprehensive cost of the product is high, the production efficiency of the traditional assembly mode is low, and deformation is easy to generate when the temperature is too high. Meanwhile, the existing backlight module is difficult to meet the increasing aesthetic requirements of people in appearance design, and meanwhile, the cost is required to be reduced.

Furthermore, the back of the existing display is a plastic shell, the patterns cannot be displayed, and the whole display is relatively low in exquisite degree.

Disclosure of utility model

In order to solve the technical problems of thicker backlight module and exquisite appearance, the utility model provides a backlight module with a color-changeable backboard.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

The utility model provides a backlight unit of backplate that discolours, includes glass backplate and glass light guide plate, and the bottom of glass light guide plate is provided with the lamp strip that is used for providing the light source, and the rear side of glass light guide plate is provided with the reflector plate that has whole gum, and the outside parcel of lamp strip has the metal radiator, its characterized in that, the front side of glass backplate is provided with the coating, and the coating comprises first colored pattern layer, white ink layer, second colored pattern layer, and the reflector plate passes through the gum laminating glass backplate's front side.

Compared with the existing backlight module, the structure of the middle frame is canceled, so that the distance between the liquid crystal panel and the optical film is smaller, the glass light guide plate is thinner than the existing plastic light guide plate, the thickness of the backlight module is reduced as a whole, and the whole structure is ultrathin; providing a first color pattern layer, a white ink layer and a second color pattern layer on the glass backboard, wherein the white ink layer isolates the second color pattern layer under the condition of no lighting, and the first color pattern layer displays an inherent pattern, for example, the pattern can be LOGO; after the backlight is lighted, a part of light coming out of the glass light guide plate penetrates through the reflecting sheet, the white ink layer can lose effect, the second color pattern layer is irradiated out, and after the second color pattern layer is mixed with the first color pattern layer, the color is changed, so that the color change effect of the pattern on the backlight strip is realized.

Further, still include liquid crystal display panel, be provided with the optics diaphragm between liquid crystal display panel and the glass light guide plate, the outside of metal radiator is provided with the backshell, and backlight unit's last enclose, left side enclose and right enclose the side and be provided with the strake of bonding backlight unit, backlight unit's front side is provided with the front bezel respectively. Different downstream manufacturers have different demands, and some manufacturers purchase the backlight module and then attach the backlight module to the liquid crystal panel, so that the initially produced backlight module does not need to include the liquid crystal panel.

The backlight module of the color-changeable backboard provided by the utility model has the following beneficial effects:

Through the structural change, by original iron backplate, fixed structure spare, lamp strip, reflector plate, plastic light guide plate, optics diaphragm, center, LCD panel and preceding frame (face frame), change into glass backplate, take reflector plate, glass light guide plate, optics diaphragm and the LCD panel of gum layer, cancel the center structure, make the interval between LCD panel and the optics diaphragm littleer, the glass light guide plate is thinner than current plastic light guide plate, has reduced backlight unit's thickness on the whole for the complete machine structure is ultra-thin. The coating structure can improve the appearance exquisite degree, so that the display can display patterns with different colors at different periods of time when the display is turned on or off, the exquisite degree of the display is improved, and the user experience is improved.

Drawings

FIG. 1 is a cross-sectional view of a backlight module according to the prior art;

FIG. 2 is a schematic diagram of a backlight module according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a back surface of a backlight module according to an embodiment of the present utility model;

FIG. 4 is an enlarged view for the position A in FIG. 2;

Fig. 5 is an enlarged view for at B in fig. 2;

Fig. 6 is a schematic diagram of a coating structure and peripheral components according to an embodiment of the present utility model.

In the figure: 1. a liquid crystal panel; 2. a front frame; 3. an optical film; 4. a plastic light guide plate; 5. a light bar; 6. a reflection sheet; 7. an iron backboard; 8. a plastic middle frame; 9. a glass back plate; 10. a coating; 11. a first color pattern layer; 12. a white ink layer; 13. a second color pattern layer; 20. a rear shell region; 30. a back display area; 41. a glass light guide plate; 51. edge strips; 52. double-sided foam rubber; 53. a glue block; 54. edge-wrapping adhesive tape; 81. a metal heat sink.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 2 to 6, a backlight module of a color-changeable back plate includes a liquid crystal panel 1, a glass light guide plate 41, and an optical film 3 disposed between the two, wherein the optical film 3 disposed above the glass light guide plate 41 plays roles of uniform light and converging a large angle, a lamp strip 5 for providing a light source is disposed at the bottom of the glass light guide plate 41, a reflector plate 6 is disposed at the rear side of the glass light guide plate 41, the rear side of the reflector plate 6 is attached to the glass back plate 9 via a back glue layer thereof, a metal radiator 81 is wrapped outside the lamp strip 5, the metal radiator 81 extends upwards to cover the lower part of the glass back plate 9, a back shell is disposed outside the metal radiator 81, a circuit board is disposed between the back shell and the metal radiator 81, side strips 51 are disposed on the upper, left and right sides of the backlight module, a front frame 2 is disposed on the front side of the backlight module, a spray painting area 711 is disposed on the outer side of the glass back plate 9, and a spray painting pattern is disposed on the outer side of the glass back plate 9. The edge 51 is a metal edge or a plastic edge.

The adoption of the edge strips 51 can reduce the die sinking cost, the edge strips 51 can be extruded and molded, and compared with a special die sinking whole outer frame, the cost is greatly reduced, and the edge strips 51 can be adhered to the backlight module.

Compared with the existing backlight module, the structure of the middle frame is canceled, so that the distance between the liquid crystal panel 1 and the optical film 3 is smaller, the glass light guide plate 41 is thinner than the existing plastic light guide plate 4, the thickness of the backlight module is reduced as a whole, the whole structure is ultrathin, the narrow-edge effect is achieved, the cost is low, and the appearance is exquisite; using glass as a backlight main body structure and simultaneously as an appearance structure of a television or a display, and additionally using glass as a light guide material to be attached to a glass back plate 9, and simultaneously providing a coating 10 on the glass back plate 9, wherein the coating 10 consists of a first color pattern layer 11, a white ink layer 12 and a second color pattern layer 13, and the white ink layer 12 isolates the second color pattern layer 13 when not lighted, and the first color pattern layer 11 displays an inherent pattern, for example, the pattern can be LOGO; after the backlight is lighted, a part of light coming out of the glass light guide plate 41 penetrates the reflecting sheet 6, the white ink layer 12 can lose function, the second color pattern layer 13 is irradiated, and after the second color pattern layer 13 is mixed with the first color pattern layer 11, color change is generated, so that the color change effect of the pattern on the backlight 5 is realized.

And then the liquid crystal panel 1 is attached to the glass light guide plate 9, so that the existing backlight mode is changed, the materials and the procedures are saved, the general product form of the backlight source is realized, and the backlight module can be applied to the design of display products of all side-light type backlight modules.

Referring to fig. 3, the back portion of the glass back plate 9 is a back display area 30 occupying most of the position, and below it is a back housing area 20 housing the lower position in which the circuit board related components are disposed.

Referring to fig. 4, at the upper end of the backlight module, the edge portion of the glass light guide plate 41 is covered with an edge-covering adhesive tape 54, a glue block 53 is filled between the edge-covering adhesive tape 54 and the reflective sheet 6, a gap between the liquid crystal panel 1 and the edge-covering adhesive tape 54 is filled with double-sided foam glue 52, and the tops of the edge strip 51, the edge-covering adhesive tape 54, the reflective sheet 6 and the glass back plate 9 are filled with double-sided foam glue 52, so as to form a firm and stable connection structure.

The metal radiator 81 is made of an aluminum profile, and the aluminum profile has an excellent radiating effect.

The assembly mode uses the glass backboard 9 as a main body structure, then the reflection sheet 6 of the whole back glue is attached, then the glass light guide plate 41 is attached by dispensing, then the optical film 3 is assembled, then the metal radiator 81 and the lamp strip 5 are assembled, then the liquid crystal panel 1 made of glass is fixed by attaching the double-sided foam glue 52, and then the edge strip 51 is attached, so that the main body is ultrathin of three pieces of glass, the cost is low, and the assembly mode can be used for manufacturing display products of TVs and displays with exquisite appearance.

The implementation of the utility model has the beneficial effects that:

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The utility model provides a backlight unit of backplate that discolours, includes glass backplate (9) and glass light guide plate (41), the bottom of glass light guide plate (41) is provided with lamp strip (5) that are used for providing the light source, the rear side of glass light guide plate (41) is provided with reflector plate (6) that have whole face gum, the outside parcel of lamp strip (5) has metal radiator, a serial communication port, the front side of glass backplate (9) is provided with coating (10), and coating (10) comprise first colored pattern layer (11), white ink layer (12), second colored pattern layer (13), and reflector plate (6) are through the front side of gum laminating glass backplate (9).

2. The backlight module of the color-changeable backboard according to claim 1, further comprising a liquid crystal panel (1), wherein an optical film (3) is arranged between the liquid crystal panel (1) and the glass light guide plate (41), a rear shell is arranged outside the metal radiator, side strips (51) for bonding the backlight module are arranged on the upper periphery, the left periphery and the right periphery of the backlight module, and front frames (2) are respectively arranged on the front sides of the backlight module.