Backlight assembly and display module

Abstract

The utility model discloses a backlight assembly which comprises an LED light bar and a backlight frame. The LED lamp strip is in a long strip shape, the backlight frame is in a cylinder shape, a groove is formed in the top face of the backlight frame, the LED lamp strip is arranged on the inner side wall of the groove, the LED lamp strip comprises a plurality of lamp beads and a lamp belt, the lamp beads are arranged in parallel, the length direction of the lamp beads is perpendicular to the length direction of the lamp belt, and the LED lamp strip is arranged in the groove. And the LED light bar is arranged in a manner of extending along the circumferential direction of the inner side wall. According to the utility model, the lamp beads are vertically arranged on the lamp strip, so that the number of the lamp beads can be increased by more than one time compared with the transverse arrangement in the prior art, the brightness can be further improved by more than one time, the influence on the appearance and the structure is small, the backlight size does not need to be increased due to the increase of the lamp beads, and the influence on the assembly of other parts is avoided. In addition, the utility model further discloses a display module.

Description

Technical Field

[0001] The utility model relates to the field of display screens, in particular to a backlight assembly and a display module. Background Art

[0002] On a display screen, since the backlight of a circular TFT is restricted by the shape structure of the TFT, the LED lights are usually placed horizontally. However, when arranging the LED light strips in a horizontal placement manner, it is necessary to increase the size of the backlight, which has a great impact on the overall appearance of the display screen and even affects the assembly of other processes. Summary of the Utility Model

[0003] An object of the utility model is to overcome the deficiencies in the prior art and provide a backlight assembly and a display module.

[0004] The object of the utility model is achieved by the following technical solutions:

[0005] A backlight assembly, characterized by comprising: an LED light strip and a backlight frame; the LED light strip is in a long strip shape, the backlight frame is in a cylindrical shape, a groove is formed on the top surface of the backlight frame, the LED light strip is arranged on the inner side wall of the groove, the LED light strip comprises a plurality of lamp beads and a light-emitting diode (LED) strip, each of the lamp beads is arranged in parallel, the length direction of each of the lamp beads is perpendicular to the length direction of the LED strip, and the LED light strip is arranged to extend along the circumferential direction of the inner side wall.

[0006] In one embodiment, the backlight assembly further comprises a solid glue layer, and the edge side of the LED light strip is fixed on the inner side wall through the solid glue layer.

[0007] In one embodiment, the lamp beads are connected in parallel with each other.

[0008] In one embodiment, the lamp beads are arranged at equal intervals in the LED strip.

[0009] In one embodiment, the backlight assembly further comprises a light guide plate, and the light guide plate is arranged in the groove.

[0010] In one embodiment, the light guide plate is in a wedge-shaped structure, and the side with a larger thickness of the light guide plate is close to the LED light strip.

[0011] In one embodiment, the backlight assembly further comprises a backlight flexible printed circuit (FPC), the backlight FPC is bonded to the backlight frame, and the LED light strip is electrically connected to the backlight FPC.

[0012] In one embodiment, the cross-section of the backlight frame along the radial direction is circular.

[0013] In one embodiment, the backlight frame is a metal frame.

[0014] A display module includes the aforementioned backlight assembly.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] The backlight assembly of the present utility model is provided with an LED light bar and a backlight frame. The LED light bar is in a long strip shape, and the backlight frame is in a cylindrical shape. A groove is opened on the top surface of the backlight frame, and the LED light bar is arranged on the inner side wall of the groove. The LED light bar includes a plurality of lamp beads and a lamp strip. The lamp beads are arranged in parallel, the length direction of each lamp bead is perpendicular to the length direction of the lamp strip, and the LED light bar extends along the circumferential direction of the inner side wall. In the present utility model, each lamp bead is placed vertically on the lamp strip, which can increase the number of lamp beads by more than one time compared with the horizontal placement in the prior art. Furthermore, the brightness can be increased by more than one time, and the influence on the appearance and structure is small. There is no need to increase the size of the backlight due to the increase of lamp beads, thus avoiding affecting the assembly of other parts. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 FIG. 18 is a schematic structural diagram of an LED light bar with horizontally placed lamp beads in the prior art;

[0019] Reference Signs:

[0020] LED light bar '10.

[0021] Figure 2 FIG. 28 is a schematic structural diagram of an LED light bar with vertically placed lamp beads in an embodiment of the present utility model;

[0022] Figure 3 FIG. 32 is a schematic cross-sectional structural diagram of a backlight assembly in an embodiment of the present utility model;

[0023] Figure 4 FIG. 36 is a schematic front structural diagram of a backlight assembly in an embodiment of the present utility model.

[0024] Reference Signs:

[0025] LED light bar 10, lamp bead 11, lamp strip 12, backlight frame 20, light guide plate 21, backlight FPC 22. Detailed Embodiments

[0026] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0027] This application provides a backlight assembly. Please refer toFigure 3 , including: an LED light bar 10 and a backlight holder 20. The LED light bar 10 is in a long strip shape, and the backlight holder 20 is in a cylindrical shape. A groove is formed on the top surface of the backlight holder 20, and the LED light bar 10 is arranged on the inner side wall of the groove. The LED light bar 10 includes a plurality of lamp beads 11 and a light strip 12. Each lamp bead 11 is arranged in parallel, and the length direction of each lamp bead 11 is perpendicular to the length direction of the light strip 12, and the LED light bar 10 is arranged to extend along the circumferential direction of the inner side wall. Please refer to Figure 1 and Figure 2 , the length of the lamp bead 11 is greater than its width. Each lamp bead 11 of the present utility model is placed vertically on the light strip 12. The length of the light strip 12 is certain, and the length direction of the lamp bead 11 is parallel to the width direction of the light strip 12. Compared with the horizontal placement in the prior art, the number of lamp beads 11 can be increased by more than one time, and thus the brightness can be increased by more than one time, and the influence on the appearance and structure is small. There is no need to increase the size of the backlight due to the increase of the lamp beads 11, so as to avoid affecting the assembly of other parts.

[0028] In an embodiment, the edge side of the LED light bar 10 is fixed on the inner side wall through a solid glue layer, and the material of the solid glue layer is heat-resistant. When the LED light bar 10 works for a long time, a large amount of heat will accumulate on the LED light bar 10, resulting in a temperature rise. The solid glue layer is heat-resistant, avoiding the melting point of the solid glue layer being too low and causing the bonding failure.

[0029] Furthermore, the lamp beads 11 are connected in parallel, so that the voltage on each lamp bead 11 is equal and the power is the same. Furthermore, the light brightness emitted by each lamp bead 11 is the same, and each lamp bead 11 can work at a normal working voltage, improving the service life of each lamp bead 11. When one of the lamp beads 11 fails, it does not affect the operation of other lamp beads 11.

[0030] Still further, the model specifications of the lamp beads 11 are the same. Therefore, the irradiation ranges of the lamp beads 11 are the same. In an embodiment, the lamp beads 11 are arranged in the light strip 12 at equal intervals, and the light emitted by the LED light bar 10 is more uniform, preventing the local light intensity of the LED light bar 10 from being too large, resulting in uneven local brightness of the display screen and affecting the display effect.

[0031] Please refer to again Figure 3 , the backlight assembly further includes a light guide plate 21, and the light guide plate 21 is arranged in the groove. The light emitted by the LED light bar 10 is concentrated on the light guide plate 21. The light guide plate 21 is used to convert the point-source LED light bar 10 into a surface light source. The light of the light guide plate 21 is emitted from the opening of the groove of the backlight holder, so that the light is more evenly irradiated on the display screen, and thus the imaging brightness of the display screen is more uniform.

[0032] Furthermore, the light guide plate 21 is in a wedge shape. One end of the wedge shape has a larger thickness, and the other end has a smaller thickness. The end with the larger thickness is connected to the end with the smaller thickness through a decreasing thickness transition. The side of the light guide plate 21 with a larger thickness is close to the LED light bar 10. That is, the light guide plate 21 has a larger thickness on the side close to the LED light bar 10 and a smaller thickness on the side far from the LED light bar 10. If the light guide plate 21 is thicker, the output light intensity is higher.

[0033] Please refer to Figure 4 , the backlight assembly further includes a backlight FPC 22. The backlight FPC 22 is bonded to the backlight frame 20. The LED light bar 10 is electrically connected to the backlight FPC 22, and the backlight FPC 22 supplies power to the LED light bar 10. Further, the cross-section of the backlight frame 20 in the radial direction is circular, so that the backlight frame 20 can adapt to a circular display screen, improving the overall aesthetics of the product. Preferably, the backlight frame 20 is a metal frame, which has a large hardness and strong anti-deformation performance, and can protect the parts inside the backlight assembly. The backlight frame 20 is in a wedge shape to avoid lack of glue due to too thin bottom of the backlight frame 20.

[0034] In addition, the present application also proposes a display module, including the aforementioned backlight assembly. The display module has strong brightness and good display effect.

[0035] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A backlight assembly, characterized in that: include: LED light strips and backlight frames; The LED light strip is in the shape of a long strip, the backlight frame is in the shape of a cylinder, a groove is provided on the top surface of the backlight frame, the LED light strip is arranged on the inner wall of the groove, the LED light strip includes a plurality of lamp beads and a light strip, the lamp beads are arranged in parallel, the length direction of each lamp bead is perpendicular to the length direction of the light strip, and the LED light strip is arranged to extend circumferentially along the inner wall.

2. The backlight assembly according to claim 1, characterized in that: It also includes a solid glue layer, and the edge side of the LED light strip is fixed to the inner side wall through the solid glue layer.

3. The backlight assembly according to claim 1, wherein: The lamp beads are connected in parallel.

4. The backlight assembly according to claim 1, wherein: The lamp beads are arranged at equal intervals in the light strip.

5. The backlight assembly according to claim 1, wherein: A light guide plate is also included, and the light guide plate is arranged in the groove.

6. The backlight assembly according to claim 5, characterized in that: The light guide plate is a wedge-shaped structure, and a side of the light guide plate with a larger thickness is close to the LED light bar.

7. The backlight assembly according to claim 1, wherein: It also includes a backlight FPC, which is bound to the backlight frame, and the LED light bar is electrically connected to the backlight FPC.

8. The backlight assembly according to claim 1, wherein: The cross section of the backlight frame along the radial direction is circular.

9. The backlight assembly according to claim 1, wherein: The backlight frame is a metal frame.

10. A display module, characterized in that: The backlight assembly comprises the backlight assembly as claimed in any one of claims 1 to 9.

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