Backlight module and display device

Abstract

The utility model discloses a backlight module and a display device, the backlight module comprises a middle frame and a light blocking part, the middle frame comprises a first side part and a second side part, the end part of the first side part is connected with the end part of the second side part, and an opening is formed between the first side part and the second side part; the light blocking part is connected to the joint of the first side part and the second side part, and a decoration edge is formed on the side, away from the joint, of the light blocking part and used for forming the edge of an actual display area of the display panel. The display effect can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a backlight module and a display device. Background Technology

[0002] As consumers' demands for monitor appearance increase, the current technology, which uses right-angled outlines for the four corners of the display area, can no longer meet consumer needs.

[0003] However, in related technologies, screen manufacturers' production lines can only match right-angled contours. If non-right-angled contours need to be developed, it usually requires the development of new pixel designs and the modification of production line equipment, which is costly and has a long development cycle. This cannot meet customer needs in a timely manner and affects the improvement of display effects.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this application is to provide a backlight module and a display device to improve the display effect.

[0006] To solve the above problems, the technical solution of this application is as follows:

[0007] In a first aspect, this application proposes a backlight module, comprising:

[0008] The middle frame includes a first side portion and a second side portion, the end of the first side portion being connected to the end of the second side portion, and an opening being formed between the first side portion and the second side portion; and

[0009] A light-blocking portion is connected to the connection between the first side portion and the second side portion. A decorative edge is formed on the side of the light-blocking portion away from the connection portion. The decorative edge is used to form the edge of the actual display area of ​​the display panel.

[0010] In one embodiment of this application, the decorative edge is an arc edge;

[0011] The opening is set corresponding to the actual display area of ​​the display panel, and the light emitted by the backlight module enters the actual display area of ​​the display panel through the opening;

[0012] The display panel also includes a corner display area, which is located on one side of the corner of the actual display area. The light-blocking part is provided corresponding to the corner display area and is used to block the light emitted by the backlight module from entering the corner display area of ​​the display panel.

[0013] The decorative edge corresponds to the edge of the actual display area near the corner display area.

[0014] In one embodiment of this application, the center of the arc edge is located within the opening.

[0015] In one embodiment of this application, in a plan view of the backlight module, the light-blocking portion includes:

[0016] A first connecting edge, one end of which is connected to the side of the first side near the opening; and

[0017] The second connecting edge, one end of which is connected to the side of the second side near the opening;

[0018] Wherein, one end of the arc edge is connected to the other end of the first connecting edge, and the other end of the arc edge is connected to the other end of the second connecting edge.

[0019] In one embodiment of this application, in a plan view of the backlight module, the first connecting edge extends in a direction away from the first side portion;

[0020] The opening includes a connected light-emitting port and a first supplementary light-emitting port. The first connecting edge and the side of the first side near the opening form the first supplementary light-emitting port, and the light-emitting port is located on the side of the first supplementary light-emitting port away from the first side.

[0021] In one embodiment of this application, in a plan view of the backlight module, the second connecting edge extends in a direction away from the second side.

[0022] The opening also includes a second supplementary light port that connects to the light output port;

[0023] The second connecting edge and the side of the second side near the opening form the second supplementary light port, and the light outlet is located on the side of the second supplementary light port away from the second side.

[0024] In one embodiment of this application, in a plan view of the backlight module, one end of the arc edge is smoothly connected to the side of the first side near the opening, and the other end of the arc edge is smoothly connected to the side of the second side near the opening.

[0025] In one embodiment of this application, the backlight module further includes an optical module, a portion of the first side overlaps the top of the optical module, a portion of the second side overlaps the top of the optical module, and the light-blocking portion overlaps the top of the optical module;

[0026] The opening is located above the optical module.

[0027] In one embodiment of this application, the middle frame includes:

[0028] Side panels, surrounding the periphery of the optical module; and

[0029] A top plate is connected to the top of the side plate and located above the optical module. The top plate includes the first side portion and the second side portion.

[0030] In one embodiment of this application, the optical module includes:

[0031] Reflector;

[0032] A light panel is mounted on the reflector sheet;

[0033] A diffuser plate is disposed on the lamp plate; and

[0034] An optical film is disposed on the diffuser plate;

[0035] The opening is located on the side of the optical film away from the diffuser plate.

[0036] In one embodiment of this application, the optical module includes:

[0037] Light guide plate;

[0038] A light strip is disposed on the light-incident side of the light guide plate; and

[0039] An optical film is disposed on the light guide plate;

[0040] The opening is located on the side of the optical film away from the light guide plate.

[0041] Secondly, this application proposes a display device, including a backlight module and a display panel;

[0042] The backlight module includes a mid-frame and a light-blocking part. The mid-frame includes a first side and a second side. The end of the first side is connected to the end of the second side, and an opening is formed between the first side and the second side. The light-blocking part is connected to the connection between the first side and the second side. A decorative edge is formed on the side of the light-blocking part away from the connection. The decorative edge is used to form the edge of the actual display area of ​​the display panel.

[0043] The display panel includes a physical display area and a corner display area, wherein the corner display area is located on one side of the corner of the physical display area;

[0044] The opening corresponds to the actual display area, the light-blocking part corresponds to the corner display area, and the decorative edge corresponds to the edge of the actual display area near the corner display area.

[0045] In this application, by setting a light-blocking part, a portion of the light emitted from the backlight module passes through the opening, exits the mid-frame, and reaches the display panel, while the remaining light is blocked by the light-blocking part and cannot exit the mid-frame to reach the display panel. At this time, in the designated display area of ​​the display panel, the area with incident light is the actual display area, and the area without incident light is the corner display area. The opening corresponds to the actual display area, and the light-blocking part corresponds to the corner display area. In the displayed image, the corner display area receives no light and appears black. This application also forms a decorative edge on the side of the light-blocking part away from the connection between the first and second sides, making the corner contour of the actual display area a non-right-angle contour. Therefore, by setting the light-blocking part corresponding to the corner display area of ​​the display area, without modifying production line equipment or developing new pixel designs, improvements to the mid-frame allow setting the four corner contours of the actual display area to non-right-angle contours, thereby reducing costs and improving display effects. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of a display device according to an embodiment of this application;

[0047] Figure 2 This is a schematic diagram of a display panel according to an embodiment of this application;

[0048] Figure 3 This is a schematic diagram of a backlight module according to an embodiment of this application;

[0049] Figure 4 yes Figure 3 Enlarged view of point B in the middle;

[0050] Figure 5 This is a schematic diagram of the backlight module according to the first embodiment of this application;

[0051] Figure 6 This is a schematic diagram of the backlight module according to the second embodiment of this application;

[0052] Figure 7 This is a plan view of the backlight module according to the third embodiment of this application;

[0053] Figure 8 This is a plan view of the backlight module according to the fourth embodiment of this application. Detailed Implementation

[0054] The terms used in this specification and claims have the meanings that are commonly understood by one of ordinary skill in the art to which this application pertains. The terms used in this specification and claims are for the purpose of facilitating the description and understanding of this application only, and are not intended to limit this application to the narrow interpretation of the specific terms used in the specification and claims.

[0055] Please see Figure 1 This application provides a display device 1000. The display device 1000 can be a tablet computer, e-reader, electronic display screen, laptop computer, mobile phone, augmented reality (AR) / virtual reality (VR) device, media player, wearable device, digital camera, car navigation system, etc. The display device 1000 includes a backlight module 100 and a display panel 200. The light-emitting side of the backlight module 100 is positioned facing the display panel 200.

[0056] In this application, the display panel 200 is a liquid crystal display (LCD) panel 200. Subsequent embodiments will be described using the liquid crystal display panel 200 as an example.

[0057] In this application, the display panel 200 includes an actual display area AA1 and a corner display area AA2. The corner display area AA2 is located on one side of the corner of the actual display area AA1.

[0058] It is understood that in this application, the display panel 200 includes a setting display area AA and a non-display area NA located on at least one side of the setting display area AA. The setting display area AA has display pixels, while the non-display area NA has no display pixels.

[0059] In the set display area AA, the area where light enters and thus the image can be displayed is the actual display area AA1, and the area where no light enters and thus the image cannot be displayed is the corner display area AA2.

[0060] Optionally, the corner display area AA2 is located at at least one corner of the actual display area AA1.

[0061] Please see Figure 2 Optionally, the corner display area AA2 is located at the four corners of the actual display area AA1.

[0062] Please see Figure 3 In this application, the backlight module 100 includes a middle frame 10 and a light-blocking part 113.

[0063] The middle frame 10 includes a first side portion 111 and a second side portion 112. The end of the first side portion 111 is connected to the end of the second side portion 112. An opening 40 is formed between the first side portion 111 and the second side portion 112.

[0064] Please see Figure 4The light-blocking portion 113 is connected to the connection point 114 between the first side portion 111 and the second side portion 112. A decorative edge 113a is formed on the side of the light-blocking portion 113 away from the connection point 114. The decorative edge 113a is used to form the edge of the actual display area AA1 of the display panel 200.

[0065] In this embodiment, by setting the light-blocking part 113, a portion of the light emitted from the backlight module 100 passes through the opening 40, exits the middle frame 10, and reaches the display panel 200, while the other portion of the light is blocked by the light-blocking part 113 and cannot exit the middle frame 10 to reach the display panel 200. At this time, in the designated display area AA of the display panel 200, the area with incident light is the actual display area AA1, and the area without incident light is the corner display area AA2. The opening 40 corresponds to the actual display area AA1, and the light-blocking part 113 corresponds to the corner display area AA2. In the displayed image, the corner display area AA2 is black because no light enters it. This embodiment also forms a decorative edge 113a on the side of the light-blocking part 113 away from the connection point 114 of the first side 111 and the second side 112, making the corner outline of the actual display area AA1 a non-right-angle outline. Therefore, by setting the light-blocking part 113 in the corner display area AA2 of the set display area AA, the four corner contours of the actual display area AA1 can be set as non-right-angle contours through the improvement of the middle frame 10 without modifying the production line equipment or developing new pixel designs, thereby reducing costs and improving the display effect.

[0066] Optionally, the decorative edge 113a can be an arc edge, a curve, or a wavy line. It can also be an irregular shape to achieve a non-right-angle display. Alternatively, it can be a rounded arc to achieve a rounded corner display. No limitations are placed on the shape of the decorative edge 113a here.

[0067] Optionally, the decorative edge 113a is an arc edge.

[0068] The opening 40 corresponds to the actual display area AA1 of the display panel 200, and the light emitted by the backlight module 100 enters the actual display area AA1 of the display panel 200 through the opening 40.

[0069] The light-blocking part 113 is set in the corner display area AA2 of the display panel 200 connected to the actual display area AA1. The light-blocking part 113 is used to block the light emitted by the backlight module 100 from entering the corner display area AA2 of the display panel 200.

[0070] The decorative edge 113a corresponds to the edge setting of the actual display area AA1 near the corner display area AA2.

[0071] In this embodiment, a portion of the light emitted by the backlight module 100 exits the backlight module 100 through the opening 40 and enters the actual display area AA1. The other portion of the light is blocked by the light-blocking part 113 and cannot exit the backlight module 100 to enter the corner display area AA2. Therefore, by setting the decorative edge 113a of the light-blocking part 113 as a curved edge, the corner contour of the actual display area AA1 can be adjusted to a non-right-angle contour, thereby reducing costs and improving the display effect.

[0072] Optionally, the center of the arc edge is located within the opening 40.

[0073] Optionally, the curved edge is a circular arc.

[0074] In this embodiment, by setting the decorative edge 113a as an arc edge, with the center of the arc edge located within the opening 40, the corner outline of the actual display area AA1 is adjusted to a rounded corner structure, thereby achieving rounded corner display at low cost. Rounded corner display is a new type of appearance display, which has a more harmonious display effect and is more comfortable for the human eye to view, thus improving the display effect.

[0075] Optionally, the decorative edge 113a can be a portion of a circle with a radius of 0.1 cm to 5 cm. The decorative edge 113a can be one-quarter of that circle. No limitations are made on the shape or size of the decorative edge 113a. The rounded corners of the actual display area AA1 can be adjusted by the shape of the decorative edge 113a. The larger the area of ​​the light-blocking portion 113, the larger the rounded corners of the actual display area AA1, resulting in a more harmonious display effect.

[0076] In the first embodiment of this application:

[0077] Please see Figure 5 In this embodiment, the backlight module 100 is a side-lit backlight module 100.

[0078] Optionally, the mid-frame 10 includes a side plate 12 and a top plate 11. The side plate 12 surrounds the periphery of the optical module 50. The top plate 11 is connected to the top of the side plate 12 and is located above the optical module 50. The top plate 11 includes a first side portion 111 and a second side portion 112.

[0079] Optionally, the backlight module 100 also includes a back plate 30, in which an accommodating cavity is formed, and an optical module 50 is disposed in the accommodating cavity, with the middle frame 10 connected to the back plate 30.

[0080] Optionally, the optical module 50 includes a light guide plate 51, a light strip 52, and an optical film 53. The light strip 52 is disposed on the light-incident side of the light guide plate 51. The optical film 53 is disposed on the light guide plate 51. The opening 40 is located on the side of the optical film 53 away from the light guide plate 51.

[0081] In the first embodiment of this application, the side of the light guide plate 51 closest to the optical film 53 is the light-emitting side. The light emitted by the lamp strip 52 enters the light guide plate 51 from the light-incident side and exits the light guide plate 51 from the light-emitting side. The light guide plate 51 converts the point light source of the lamp strip 52 into a surface light source. After the surface light source passes through the optical film 53, a portion of the surface light source exits the backlight module 100 through the opening 40 and enters the actual display area AA1. The other portion of the surface light source is blocked by the light-blocking part 113 and cannot exit the backlight module 100 to enter the corner display area AA2. Therefore, by adjusting the shape of the decorative edge 113a of the light-blocking part 113, the corner contour of the actual display area AA1 can be adjusted to a non-right-angle contour, thereby reducing costs and improving the display effect.

[0082] In the second embodiment of this application:

[0083] To avoid redundancy, the second embodiment of this application will describe the parts that differ from the first embodiment of this application.

[0084] The second embodiment of this application differs from the first embodiment of this application in that:

[0085] Please see Figure 6 In this embodiment, the backlight module 100 is a direct-lit backlight module 100.

[0086] Optionally, the optical module 50 includes a reflector 54, a lamp plate 55, a diffuser plate 56, and an optical film 53. The lamp plate 55 is disposed on the reflector 54. The diffuser plate 56 is disposed on the lamp plate 55. The optical film 53 is disposed on the diffuser plate 56. An opening 40 is located on the side of the optical film 53 away from the diffuser plate 56.

[0087] In the second embodiment of this application, light is emitted from the side of the lamp panel 55 near the diffuser plate 56. The reflector 54 can improve the utilization rate of light. The light emitted from the lamp panel 55 forms a uniform surface light source after passing through the diffuser plate 56 and the optical film 53. A portion of the surface light source exits the backlight module 100 through the opening 40 and enters the actual display area AA1. Another portion of the surface light source is blocked by the light-blocking part 113 and cannot exit the backlight module 100 to enter the corner display area AA2. Therefore, by adjusting the shape of the decorative edge 113a of the light-blocking part 113, the corner contour of the actual display area AA1 can be adjusted to a non-right-angle contour, thereby reducing costs and improving the display effect.

[0088] In the third embodiment of this application:

[0089] To avoid redundancy, the third embodiment of this application will describe the parts that differ from the first embodiment of this application.

[0090] The third embodiment of this application differs from the first embodiment in that:

[0091] Please see Figure 7 Optionally, in a plan view of the backlight module 100, one end of the arc edge is smoothly connected to the side of the first side 111 near the opening 40, and the other end of the arc edge is smoothly connected to the side of the second side 112 near the opening 40.

[0092] In the third embodiment of this application, the light-blocking portion 113 has a smaller blocking area. On the one hand, this can increase the ratio of the actual display area AA1 to the set display area AA, thereby increasing the screen-to-body ratio of the display device 1000 and improving the display effect. On the other hand, the first side portion 111 and the second side portion 112 block the light emitted from the edge of the actual display area AA1 at a wide viewing angle, providing a better privacy protection effect and enabling privacy display.

[0093] In the fourth embodiment of this application:

[0094] To avoid redundancy, the fourth embodiment of this application will describe the parts that differ from the first embodiment of this application.

[0095] The fourth embodiment of this application differs from the first embodiment in that:

[0096] Please see Figure 8 Optionally, in the plan view of the backlight module 100, the light-blocking portion 113 includes a first connecting edge 113b and a second connecting edge 113c. One end of the first connecting edge 113b is connected to the side of the first side portion 111 near the opening 40. One end of the second connecting edge 113c is connected to the side of the second side portion 112 near the opening 40. One end of the curved edge is connected to the other end of the first connecting edge 113b, and the other end of the curved edge is connected to the other end of the second connecting edge 113c.

[0097] In this embodiment, the design of the first connecting edge 113b and the second connecting edge 113c allows for a smoother molding of the decorative edge 113a, enabling the light-blocking portion 113 to better block light transmitted through the light guide plate 51. Optionally, the first connecting edge 113b and the second connecting edge 113c can be straight lines, arcs, or curves.

[0098] Optionally, in a plan view of the backlight module 100, the first connecting edge 113b extends in a direction away from the first side portion 111. The opening 40 includes a communicating light-emitting port 41 and a first supplementary light port 42. The first connecting edge 113b and the side of the first side portion 111 near the opening 40 form the first supplementary light port 42. The light-emitting port 41 is located on the side of the first supplementary light port 42 away from the first side portion 111.

[0099] In this embodiment, in the thickness direction of the display device 1000, the light-emitting port 41 is positioned corresponding to the actual display area AA1 of the display panel 200, while the first supplementary light port 42 does not overlap with the actual display area AA1. However, a portion of the light from the backlight module 100 can be emitted from the first supplementary light port 42 and directed towards the edge of the actual display area AA1. Compared to the third embodiment, the placement of the first supplementary light port 42 increases the light emission angle at the edge of the actual display area AA1, achieving a wide light emission angle at the edge of the actual display area AA1, thus improving the display effect.

[0100] Optionally, in a plan view of the backlight module 100, the second connecting edge 113c extends in a direction away from the second side portion 112. The opening 40 also includes a second supplementary light port 43 communicating with the light emission port 41. The second connecting edge 113c and the side of the second side portion 112 near the opening 40 form the second supplementary light port 43. The light emission port 41 is located on the side of the second supplementary light port 43 away from the second side portion 112.

[0101] In this embodiment, in the thickness direction of the display device 1000, the light-emitting port 41 is positioned corresponding to the actual display area AA1 of the display panel 200, while the second supplementary light port 43 does not overlap with the actual display area AA1. However, a portion of the light from the backlight module 100 can be emitted from the second supplementary light port 43 and directed towards the edge of the actual display area AA1. Based on the first supplementary light port 42, the second supplementary light port 43 can further increase the light emission angle of each edge of the actual display area AA1, achieving a wide-angle light emission from each edge of the actual display area AA1, thereby improving the display effect.

[0102] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. A backlight module, characterized in that, include: The middle frame includes a first side and a second side, the end of the first side is connected to the end of the second side, and an opening is formed between the first side and the second side; and A light-blocking portion is connected to the connection between the first side portion and the second side portion. A decorative edge is formed on the side of the light-blocking portion away from the connection portion. The decorative edge is used to form the edge of the actual display area of ​​the display panel.

2. The backlight module as described in claim 1, characterized in that, The decorative edge is an arc edge; The opening is set corresponding to the actual display area of ​​the display panel, and the light emitted by the backlight module enters the actual display area of ​​the display panel through the opening; The display panel also includes a corner display area, which is located on one side of the corner of the actual display area. The light-blocking part is provided corresponding to the corner display area and is used to block the light emitted by the backlight module from entering the corner display area of ​​the display panel. The decorative edge corresponds to the edge of the actual display area near the corner display area.

3. The backlight module as described in claim 2, characterized in that, The center of the arc edge is located within the opening.

4. The backlight module as described in claim 3, characterized in that, In a plan view of the backlight module, the light-blocking portion includes: A first connecting edge, one end of which is connected to the side of the first side near the opening; and The second connecting edge, one end of which is connected to the side of the second side near the opening; Wherein, one end of the arc edge is connected to the other end of the first connecting edge, and the other end of the arc edge is connected to the other end of the second connecting edge.

5. The backlight module as described in claim 4, characterized in that, In a plan view of the backlight module, the first connecting edge extends in a direction away from the first side. The opening includes a connected light-emitting port and a first supplementary light-emitting port. The first connecting edge and the side of the first side near the opening form the first supplementary light-emitting port, and the light-emitting port is located on the side of the first supplementary light-emitting port away from the first side.

6. The backlight module as described in claim 5, characterized in that, In a plan view of the backlight module, the second connecting edge extends in a direction away from the second side. The opening also includes a second supplementary light port that connects to the light output port; The second connecting edge and the side of the second side near the opening form the second supplementary light port, and the light outlet is located on the side of the second supplementary light port away from the second side.

7. The backlight module as described in claim 3, characterized in that, In the plan view of the backlight module, one end of the arc edge is smoothly connected to the side of the first side near the opening, and the other end of the arc edge is smoothly connected to the side of the second side near the opening.

8. The backlight module as described in any one of claims 1-7, characterized in that, The backlight module also includes an optical module, a portion of the first side overlaps the top of the optical module, a portion of the second side overlaps the top of the optical module, and the light-blocking portion overlaps the top of the optical module; The opening is located above the optical module.

9. The backlight module as described in claim 8, characterized in that, The middle frame includes: Side panels, surrounding the periphery of the optical module; and A top plate is connected to the top of the side plate and located above the optical module. The top plate includes the first side portion and the second side portion.

10. The backlight module as described in claim 8, characterized in that, The optical module includes: Reflector; A light panel is disposed on the reflector sheet; A diffuser plate is disposed on the lamp plate; and An optical film is disposed on the diffuser plate; The opening is located on the side of the optical film away from the diffuser plate.

11. The backlight module as described in claim 8, characterized in that, The optical module includes: Light guide plate; A light strip is disposed on the light-incident side of the light guide plate; and An optical film is disposed on the light guide plate; The opening is located on the side of the optical film away from the light guide plate.

12. A display device, characterized in that, include: The backlight module as described in any one of claims 1-11; and The display panel includes a physical display area and a corner display area, wherein the corner display area is located on one side of the corner of the physical display area; The opening corresponds to the actual display area, the light-blocking part corresponds to the corner display area, and the decorative edge corresponds to the edge of the actual display area near the corner display area.

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