CN110007801B - Diffuser support assembly and direct type backlight module - Google Patents

Abstract

The invention discloses a diffusion plate supporting assembly and a direct type backlight module, wherein the diffusion plate supporting assembly comprises a back plate, a plurality of diffusion plate supporting frames and a plurality of connectors, the diffusion plate supporting frames are positioned on the upper surface of the back plate and movably connected with the back plate through the connectors, the bottoms of the diffusion plate supporting frames are provided with bulges, the bulges are contacted with the upper surface of the back plate, gaps are respectively formed between two opposite side edges of the bulges on the diffusion plate supporting frames and the upper surface of the back plate, and the diffusion plate supporting frames can effectively prevent electromagnetic films in the direct type backlight module from being scratched.

Description

Diffuser support assembly and direct type backlight module

technical field

The invention relates to the field of intelligent display devices, and more particularly, to a diffuser plate support assembly and a direct-type backlight module.

Background technique

The backlight module is the light source behind the display in the touch display device. The backlight module is divided into edge type backlight module and direct type backlight module according to the distribution position of the light source. Light utilization efficiency and simple structure are widely used in touch display devices.

Existing touch display devices commonly include infrared touch, electromagnetic touch, capacitive touch, etc. Electromagnetic touch has developed rapidly due to its advantages such as high touch precision, high resolution and low cost. Electromagnetic touch display devices The electromagnetic film is located under the diffuser plate of the direct-type backlight module. In order to prevent the diffuser plate of the direct-type backlight module from sinking, a diffuser plate support frame is provided under the diffuser plate. The display surface of the display device produces a black shadow, and the contact surface between the diffuser plate support frame and the diffuser plate is generally made very small. When the touch display device is transported or collided, the diffuser plate will move slightly relative to the diffuser plate support frame. During the moving process, the diffuser plate support frame will scratch the electromagnetic film, causing the touch solution to fail.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a diffuser plate support frame and a direct-type backlight module, which can effectively prevent the electromagnetic film in the direct-type backlight module from being scratched.

Its technical solutions are as follows:

The invention discloses a diffuser plate support assembly, comprising a back plate, a plurality of diffuser plate support frames and a plurality of connecting pieces, the diffuser plate support frame is located on the upper surface of the back plate, and the diffuser plate support frame is connected through the connection The part is movably connected with the back plate, the bottom of the diffuser plate support frame is provided with a protruding part, the protruding part is in contact with the upper surface of the back plate, and the diffuser plate support frame is located on the protruding part There is a gap between the opposite sides of the backplane and the upper surface of the backplane.

The protruding part and the connecting piece are located on the same straight line.

The diffuser plate support frame includes a connection base plate and a support portion, and the support portion is fixed on the connection base plate.

The protruding portion is located on the connecting base plate, and the protruding portion is located on the opposite side of the supporting portion.

The diffuser plate support frame is provided with a connection hole penetrating the connection bottom plate, the upper surface of the back plate is provided with upwardly protruding buds, and the buds are sleeved in the connection holes.

The connecting piece is provided with external threads, the budding is internally provided with internal threads, and the external threads are matched with the internal threads.

The sum of the thickness of the protruding portion and the thickness of the connecting bottom plate is the first thickness, and the height of the sprouts is greater than the first thickness.

The connecting piece is provided with a step, the step is in contact with the sprout, the sum of the height of the step and the height of the sprout is the first height, and the thickness of the protruding portion is the same as the thickness of the connecting bottom plate. The sum of the thicknesses is a first thickness, and the first height is greater than the first thickness.

The connecting piece and the protruding portion extend from one side of the bottom of the diffuser plate support frame to the other opposite side.

There are two connecting pieces, the connecting pieces are spaced apart from the protruding parts, and the protruding parts are respectively located on opposite sides of the connecting piece.

The protruding part and the connecting piece are respectively located on the center line of the bottom of the diffuser plate support frame.

The protruding portion is a rib position.

The support portion is a triangular plate-like structure, and a support platform is provided on the top of the support portion.

The present invention also discloses a direct type backlight module, which includes a diffuser plate, an electromagnetic film and a plurality of light sources, and also includes the diffuser plate support assembly according to any one of the foregoing, wherein the light source is located on the back plate, and the electromagnetic film Located below the diffuser plate, the diffuser plate support assembly is located below the electromagnetic film.

It should be noted:

The aforementioned "first, second, third..." is only used to distinguish names, and does not represent a specific number and order.

The advantages or principles of the present invention are described below:

1. The protruding part is in contact with the back plate, and there is a gap between the opposite sides of the protruding part and the back plate on the diffuser plate support frame. The board support frame will neither loosen nor be locked on the back panel, the protrusions play a supporting role, and the diffuser board support frame can shake to the opposite sides of the protrusions. During the vibration process, when the diffuser plate moves slightly, it can drive the diffuser plate support frame to shake, preventing the electromagnetic film under the diffuser plate from being scratched and protecting the electromagnetic film.

2. The connection bottom plate of the diffuser plate support frame is used for connection and fixation with the back plate, and the support part is used to support the diffuser plate and prevent the diffuser plate from concave.

3. The sprout of the back plate is sleeved in the connection hole of the support frame of the diffuser plate, and the external thread of the connector is matched with the internal thread of the sprout to be fixed. There is a certain gap between the diffuser plate support frame and the back plate, which is convenient for the shaking of the diffuser plate support frame.

4. The connecting piece between the connecting bottom plate and the back plate can be a screw, and the height of the sprouts is slightly greater than the sum of the thickness of the protruding part and the thickness of the connecting bottom plate, so that the protruding part on the fixed connecting bottom plate can be in line with the back plate. contact, and the connecting bottom plate on both sides of the protrusion will not contact the back plate.

5. The connecting piece between the connecting base and the backboard can also be a stepped screw. When the connecting piece is a stepped screw, the first height is greater than the first thickness, so that the protruding part on the fixed connecting base can be in line with the backboard. contact, and the connecting bottom plate on both sides of the protrusion will not contact the back plate.

6. The connecting piece and the protruding part extend from one side of the connecting base plate to the opposite side. This arrangement enables the protruding part and the connecting piece to achieve better support.

7. The protruding part and the connecting piece are respectively located on the center line of the bottom of the diffuser plate support frame. After this setting, the diffuser plate support frame has the best shaking effect with the movement of the diffuser plate, and can achieve a better protection effect on the electromagnetic film.

8. The protruding part is a rib position, and adding a rib position on the diffuser plate support frame is simple and convenient, the cost is low, and the diffuser plate support frame can achieve a better shaking effect.

Description of drawings

1 is a cross-sectional view one of a direct-lit backlight module according to an embodiment of the present invention;

2 is a second cross-sectional view of a direct-type backlight module according to an embodiment of the present invention;

3 is a perspective view of a diffuser plate support frame according to an embodiment of the present invention;

4 is a rear view of a diffuser plate support frame according to an embodiment of the present invention;

Description of reference numbers:

100, diffuser plate; 200, diffuser plate support assembly; 300, electromagnetic film; 400, light source; 210, back plate; 220, diffuser plate support frame; 230, connecting piece; 221, connecting bottom plate; 222, support part; 223, Support platform; 224, connecting hole; 211, sprout; 225, protruding part; 231, step.

Detailed ways

The embodiments of the present invention will be described in detail below.

As shown in FIG. 1 and FIG. 2 , the present embodiment discloses a direct type backlight module, which includes a diffuser plate 100 , a diffuser plate support assembly 200 , an electromagnetic film 300 and a light source 400 , wherein the electromagnetic film 300 is located below the diffuser plate 100 . , the light source 400 is located on the back plate 210 of the diffuser plate support assembly 200, the diffuser plate support assembly 200 is located under the electromagnetic film 300, the diffuser plate support assembly 200 supports the diffuser plate 100 to prevent the concave diffuser plate 100 from affecting the touch display device display effect.

The diffuser plate support assembly 200 in this embodiment includes a back plate 210 , a diffuser plate support frame 220 and a connecting member 230 , wherein, as shown in FIG. 3 and FIG. The support portion 222 is fixed on the upper surface of the connection base plate 221 . The support portion 222 in this embodiment is a triangular plate-like structure. A support platform 223 is provided on the top of the support portion 222 , and the support platform 223 is a smooth transition. The support platform 223 is in phase with the electromagnetic film 300 . Contact, used to support the diffusion plate 100, the connecting bottom plate 221 of this embodiment is provided with two connecting holes 224 that pass through the connecting bottom plate 221, and the upper surface of the back plate 210 is provided with buds 211 corresponding to the connecting holes 224, budding 211 protrudes from the upper surface of the back plate 210, the connector 230 in this embodiment is provided with an external thread, the bud 211 is internally provided with an internal thread, the external thread matches the internal thread, and the diffuser plate support frame 220 passes through the two connectors 230 is locked on the back plate 210 .

The bottom of the connecting base plate 221 in this embodiment is provided with three protruding parts 225 , the three protruding parts 225 are spaced apart from the two connecting holes 224 , and the protruding parts 225 are located on opposite sides of the connecting holes 224 . In the example, the protruding portion 225 and the connecting hole 224 are located on the same straight line, the protruding portion 225 and the connecting hole 224 are respectively located on the center line of the connecting bottom plate 221, and the three protruding portions 225 and the two connecting holes 224 are connected from the connecting bottom plate 221. One side of the protrusion extends to the opposite side. The protruding portion 225 in this embodiment is a rib, and the protruding portion 225 may also be a component with a supporting function such as a protruding point.

The connecting member 230 in this embodiment is a screw or a stepped screw. When the connecting member 230 is a screw, the sum of the thickness of the protruding portion 225 and the thickness of the connecting bottom plate 221 is the first thickness, and the height of the sprouts 211 is slightly larger than the first thickness; When the connecting piece 230 is a stepped screw, the step 231 provided on the stepped screw abuts against the sprout 211, the sum of the thickness of the protruding portion 225 and the thickness of the connecting bottom plate 221 is the first thickness, and the height of the sprout 211 is greater than the first thickness, In this embodiment, the number of steps of the step screw is not limited, and the steps 231 of the step screw may be one, two or more.

After the diffuser plate support frame 220 and the back plate 210 of the present embodiment are movably connected by the connecting member 230 , the three protruding parts 225 are respectively in contact with the upper surface of the back plate 210 , and the connecting bottom plate 221 is located on the opposite side of the protruding part 225 . There are gaps between the two sides and the upper surface of the back plate 210 , so that the diffuser plate support frame 220 shakes back and forth in the direction of the opposite two sides of the protruding portion 225 or moves in the diffuser plate 100 when subjected to an external force. Shakes with the diffuser plate 100 when moving slightly.

The number of the connection holes 224 in this embodiment is not limited to two, and the number of the protruding parts 225 is not limited to three. For example, one connecting hole 224 can be set, the connecting hole 224 is set close to one side of the connecting base plate 221, and one protruding portion 225 is also set, the protruding portion 225 is located on one side of the connecting hole 224, and the protruding portion 225 It extends to the other side of the connecting base plate 221 opposite to the connecting hole 224; a connecting hole 224 can also be provided, and two protruding parts 225 are also provided, and the two protruding parts 225 are located on opposite sides of the connecting hole 224 respectively. At the same time, three connecting holes 224 and four protruding parts 225 can also be provided, and the three connecting holes 224 and the four protruding parts 225 are spaced apart.

The advantages of this embodiment are as follows:

1. The protruding part 225 is in contact with the back plate 210 , a gap is provided between the opposite sides of the protruding part 225 on the diffuser plate support frame 220 and the back plate 210 , and the diffuser plate support frame 220 is connected to the back plate 210 through the connecting piece 230 . The back plate 210 is movably connected, so that the diffuser plate support frame 220 is neither loose nor locked on the back plate 210 , the protruding part 225 plays a supporting role, and the diffuser plate support frame 220 can move toward the opposite side of the protruding part 225 . The sides are shaken. During the transportation or vibration of the direct type backlight module, the diffuser plate 100 can move the diffuser plate support frame 220 to shake, so as to prevent the electromagnetic film 300 under the diffuser plate 100 from being scratched and to protect the electromagnetic film. 300 role.

2. The connection bottom plate 221 of the diffuser plate support frame 220 is used for connection and fixation with the back plate 210 , and the support portion 222 is used to support the diffuser plate 100 to prevent the diffuser plate 100 from concave.

3. The sprout 211 of the back plate 210 is sleeved in the connecting hole 224 of the support frame, and the external thread of the connector 230 is matched and fixed with the internal thread of the sprout 211. The sprout 211 provided on the back plate 210 can make the fixed convex A certain gap exists between the diffuser plate support frame 220 on both sides of the outgoing portion 225 and the back plate 210 to facilitate the shaking of the diffuser plate support frame 220 .

4. The connecting piece 230 between the connecting bottom plate 221 and the back plate 210 can be a screw, and the height of the sprouts 211 is slightly larger than the sum of the thickness of the protruding part 225 and the thickness of the connecting bottom plate 221, so that the protrusions on the fixed connecting bottom plate 221 are formed. The outgoing portion 225 can be in contact with the back plate 210 , while the connecting bottom plates 221 on both sides of the protruding portion 225 will not be in contact with the back plate 210 .

5. The connecting piece 230 connecting the bottom plate 221 and the backboard 210 can also be a stepped screw. When the connecting piece 230 is a stepped screw, the first height is greater than the first thickness, so that the protruding portion on the fixed connecting bottom plate 221 225 can be in contact with the back plate 210 , while the connecting bottom plates 221 on both sides of the protruding portion 225 will not be in contact with the back plate 210 .

6. The connecting member 230 and the protruding portion 225 extend from one side of the connecting base plate 221 to the opposite side. This arrangement enables the protruding portion 225 and the connecting member 230 to achieve better support.

7. The protruding part 225 and the connecting piece 230 are respectively located on the center line of the bottom of the diffuser plate support frame 220. After this arrangement, the diffuser plate support frame 220 has the best shaking effect with the movement of the diffuser plate 100, and can achieve a better effect on the electromagnetic film 300. protective effect.

8. The protruding portion 225 is a rib position. Adding ribs on the diffuser plate support frame 220 is simple and convenient, with low cost, and can make the diffuser plate support frame 220 achieve a better shaking effect.

The above are only specific embodiments of the present invention, which do not limit the protection scope of the present invention; any replacements and improvements made on the basis of not violating the concept of the present invention belong to the protection scope of the present invention.

Claims (12)

1. A diffuser plate support assembly, characterized in that it includes a back plate, a plurality of diffuser plate support frames, and a plurality of connectors, the diffuser plate support frames are located on the upper surface of the back plate, and the diffuser plate support frame passes through the The connecting piece is movably connected with the back plate, the bottom of the diffuser plate support frame is provided with a protruding part, the protruding part is in contact with the upper surface of the back plate, and the diffuser plate support frame is located on the protruding part There are gaps between the opposite sides of the back panel respectively and the upper surface of the back panel; the diffuser panel support frame includes a connection base plate and a support part, the support part is fixed on the connection base panel; the diffuser panel supports The frame is provided with a connection hole penetrating the connection bottom plate, the upper surface of the back plate is provided with upwardly protruding buds, and the buds are sleeved in the connection holes. 2 . The diffuser plate support assembly of claim 1 , wherein the protruding portion and the connecting member are located on the same straight line. 3 . 3 . The diffuser plate supporting assembly of claim 1 , wherein the protruding portion is located on the connecting bottom plate, and the protruding portion is located on the opposite side of the supporting portion. 4 . 4 . The diffuser plate support assembly according to claim 1 , wherein an external thread is provided on the connecting piece, an internal thread is provided inside the sprout, and the external thread matches the internal thread. 5 . 5 . The diffuser plate support assembly of claim 1 , wherein the sum of the thickness of the protruding portion and the thickness of the connecting bottom plate is a first thickness, and the height of the sprouts is greater than the first thickness. 6 . 6. The diffuser plate support assembly according to claim 1, wherein a step is provided on the connecting piece, the step is in contact with the sprout, and the sum of the height of the step and the height of the sprout is The first height, the sum of the thickness of the protruding portion and the thickness of the connecting bottom plate is the first thickness, and the first height is greater than the first thickness. 7 . The diffuser plate support assembly of claim 1 , wherein the connecting member and the protruding portion extend from one side of the bottom of the diffuser plate support frame to the opposite side. 8 . 8 . The diffuser plate support assembly according to claim 1 , wherein there are two connecting pieces, the connecting pieces are spaced apart from the protruding portions, and the protruding portions are respectively located on the connecting pieces. 9 . the opposite sides. 9 . The diffuser plate support assembly of claim 1 , wherein the protruding portion and the connecting member are respectively located on the centerline of the bottom of the diffuser plate support frame. 10 . 10. The diffuser plate support assembly of claim 1, wherein the protruding portion is a rib. 11 . The diffuser plate support assembly of claim 1 , wherein the support portion is a triangular plate-like structure, and a support platform is provided on the top of the support portion. 12 . 12. A direct type backlight module, characterized in that it comprises a diffuser plate, an electromagnetic film and a plurality of light sources, and also comprises the diffuser plate support assembly according to any one of claims 1 to 11, wherein the light source is located on the back plate, The electromagnetic film is located under the diffusion plate, and the diffusion plate support assembly is located under the electromagnetic film.

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