CN209946600U - Rubber frame, backlight module and display device - Google Patents
Rubber frame, backlight module and display device Download PDFInfo
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- CN209946600U CN209946600U CN201920768598.7U CN201920768598U CN209946600U CN 209946600 U CN209946600 U CN 209946600U CN 201920768598 U CN201920768598 U CN 201920768598U CN 209946600 U CN209946600 U CN 209946600U
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- printed circuit
- circuit board
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Abstract
The utility model provides a glue frame, backlight unit and display device, set up the supporting part through the first groove of keeping away who is used for acceping flexible printed circuit board gluing the frame, so that flexible printed circuit board when assembling on backlight unit and receiving the pulling force, the supporting part plays the supporting role to flexible printed circuit board, prevent that flexible printed circuit board from receiving excessively to drag and apply the power to liquid crystal display panel through the one end that flexible printed circuit board and liquid crystal display panel bound, lead to the local box thickness of liquid crystal display panel to change, local light and shade uneven phenomenon appears when display device shows, thereby improve user's visual experience.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a glue frame, backlight unit and display device.
Background
At present, a flexible printed circuit board is usually bonded on a thin film transistor array substrate of a liquid crystal display panel through hot pressing by a vehicle-mounted display device, then the liquid crystal display panel bonded with the flexible printed circuit board is assembled on a rubber frame of a backlight module by using a fixing adhesive tape, and the flexible printed circuit board is arranged in a clearance groove of the rubber frame and is bent to the back side of the backlight module.
Therefore, a technical solution is needed to solve the problem of uneven brightness of the display due to the variation of the cell thickness of the liquid crystal display panel when the flexible printed circuit board is assembled on the plastic frame of the backlight module.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a glue frame, backlight unit and display device to solve flexible printed circuit board and can lead to liquid crystal display panel's box thickness to change and appear showing the uneven problem of light and shade when assembling on backlight unit's gluey frame.
In order to achieve the purpose, the technical scheme is as follows.
The utility model provides a display device, display device includes liquid crystal display panel, flexible printed circuit board and backlight unit, backlight unit is including gluing the frame, it has first holding surface, follow to glue the frame first holding surface convex second holding surface and by first holding surface with the first groove of keeping away that forms between the second holding surface, liquid crystal display panel is fixed in first holding surface, be provided with on the first holding surface and be located the first supporting part of keeping away in the groove, flexible printed circuit board's one end is tied up in on the liquid crystal display panel, flexible printed circuit board's the other end passes first keep away the groove and through buckling in order to arrange in backlight unit's the back, the supporting part is used for supporting in the first groove of keeping away flexible printed circuit board.
In the display device, the side wall of one end of the rubber frame is recessed to form a second avoiding groove, the second avoiding groove and the first avoiding groove are positioned at the same end of the rubber frame and are communicated with each other, and the other end of the flexible printed circuit board penetrates through the first avoiding groove, is bent for the first time to penetrate through the second avoiding groove, and is bent for the second time to be arranged on the back surface of the backlight module.
In the above display device, a first side surface of the support portion close to the second avoiding groove is flush with a first surface of the second avoiding groove close to the support portion.
In the above display device, the liquid crystal display panel includes a thin film transistor array substrate, one end of the thin film transistor array substrate close to the support portion is bound with the flexible printed circuit board, one end of the thin film transistor array substrate bound with the flexible printed circuit board is provided with a colloid layer for fixing the flexible printed circuit board close to the second side surface of the support portion, and a first preset distance is provided between the colloid layer and the support portion.
In the above display device, the first plane of the tft array substrate is located on a side of the second plane of the supporting portion away from the first supporting surface, a vertical distance between the first plane and the second plane is a second predetermined distance, the first plane of the tft array substrate is a plane bound to the flexible printed circuit board, and the second plane of the supporting portion is a plane of the supporting portion away from the first supporting surface.
In the above display device, a length of the support portion in a first direction perpendicular to a direction in which the support portion points to the liquid crystal display panel and parallel to the first support surface is greater than a length of the flexible printed circuit board in the first direction.
In the above display device, the support portion is a protrusion.
In the above display device, a surface of the support portion contacting the flexible printed circuit board is an arc-shaped surface.
In the above display device, the support portion is a hard rubber block.
The utility model provides a glue frame, glue frame have first holding surface, follow first holding surface convex second holding surface and by first holding surface with the first groove of keeping away that forms between the second holding surface, be provided with on the first holding surface and be located the first supporting part of keeping away in the groove.
A backlight module comprises the rubber frame.
Has the advantages that: the utility model provides a glue frame, backlight unit and display device, set up the supporting part through the first groove of keeping away who is used for acceping flexible printed circuit board gluing the frame, so that flexible printed circuit board when assembling on backlight unit and receiving the pulling force, the supporting part plays the supporting role to flexible printed circuit board, prevent that flexible printed circuit board from receiving excessively to drag and apply the power to liquid crystal display panel through the one end that flexible printed circuit board and liquid crystal display panel bound, lead to the local box thickness of liquid crystal display panel to change, local light and shade uneven phenomenon appears when display device shows, thereby improve user's visual experience.
Drawings
Fig. 1 is a perspective view of a display device according to an embodiment of the present invention;
FIG. 2 is a partially enlarged portion of the display device shown in FIG. 1;
fig. 3 is a schematic cross-sectional view of the display device shown in fig. 1.
The drawings are numbered as follows:
10 a liquid crystal display panel; 20 a flexible printed circuit board; 30 a backlight module; 40a support part; 100 thin film transistor array substrate; 101 a color film substrate; 100a first plane; 100b a second side; 50 a colloidal layer; d 1a first predetermined distance; 301, gluing a frame; 301a first support surface; 301b a second support surface; 3011 a first avoidance slot; 3012a second avoiding groove; 302 a back plate; 303 a light guide plate; 304 point light sources; 305 an optical film; 40a second plane; 40b a first side; 40c an arc-shaped surface; 3012a first surface.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 to 3, fig. 1 is a perspective view of a display device according to an embodiment of the present invention, fig. 2 is a partially enlarged portion of the display device shown in fig. 1, and fig. 3 is a schematic cross-sectional view of the display device shown in fig. 1. The display device is a liquid crystal display device for vehicle. The display device includes a liquid crystal display panel 10, a flexible printed circuit board 20, a backlight module 30 and a support portion 40.
The liquid crystal display panel 10 includes a thin film transistor array substrate 100 and a color filter substrate 101. The color filter substrate 101 is disposed opposite to the thin film transistor array substrate 100. The tft array substrate 100 extends to one side of the color filter substrate 101 to form an extension region. The thin film transistor array substrate 100 and the color filter substrate 101 are both rectangular parallelepipeds.
The thin film transistor array substrate 100 has a first plane 100a opposite to the color filter substrate 101 and a second side 100b close to the supporting portion 40. The first plane 100a and the second side 100b are perpendicular to each other. The second side surface 100b is located at one end of the tft array substrate 100 close to the supporting portion 40. One end of the thin film transistor array substrate 100 near the support portion 40 is bound with the flexible printed circuit board 20. Specifically, one end of the flexible printed circuit board 20 is fixed to the first plane 100a of the extension region of the thin film transistor array substrate 100 by thermal compression.
The tft array substrate 100 is bound to one end of the flexible printed circuit board 20, and the second side surface 100b close to the supporting portion 40 is provided with the colloid layer 50 for fixing the flexible printed circuit board 20, so as to prevent the end of the flexible printed circuit board 20 bound to the tft array substrate 100 from being separated from the tft array substrate 100, and prevent the problem that the flexible printed circuit board 20 is broken due to stress concentration at the end of the flexible printed circuit board 20 bound to the tft array substrate 100. The first predetermined distance d1 is provided between the colloid layer 50 and the supporting portion 40 to prevent the colloid layer 50 from contacting the supporting portion 40 to cause assembly interference. The glue layer 50 is an ultraviolet curing glue. The colloid layer 50 is coated and formed on the second side 100b of the thin film transistor array substrate 100. The first predetermined distance d1 is greater than or equal to 0.5 millimeters.
The backlight module 30 includes a plastic frame 301, and the plastic frame 301 has a first supporting surface 301a, a second supporting surface 301b protruding from the first supporting surface 301a, a first avoiding groove 3011 and a second avoiding groove 3012. A stepped region is formed between the first supporting surface 301a and the second supporting surface 301b to accommodate the flexible printed circuit board 20, and the stepped region is a first avoiding groove 3011, that is, the first avoiding groove 3011 is formed between the first supporting surface 301a and the second supporting surface 301 b. The side wall of one end of the rubber frame 301 is recessed to form a second avoiding groove 3012, and the second avoiding groove 3012 is also used for accommodating the flexible printed circuit board 20. The second avoiding groove 3012 and the first avoiding groove 3011 are located at the same end of the rubber frame 301 and are communicated with each other. One end of the flexible printed circuit board 20 is bound on the liquid crystal display panel 10, and the other end of the flexible printed circuit board 20 passes through the first avoiding groove 3011, is bent for the first time to pass through the second avoiding groove 3012, and is bent for the second time to be placed on the back of the backlight module 30.
It can be understood that the sidewall of the rubber frame 301 may not be provided with the second avoiding groove 3012, and the other end of the flexible printed circuit board 20 passes through the first avoiding groove 3011, after being bent for the first time, passes through the sidewall, and is bent for the second time to be placed on the back surface of the backlight module 30, that is, the other end of the flexible printed circuit board 20 passes through the first avoiding groove 3011 and is bent to be placed on the back surface of the backlight module 30. The flexible printed circuit board 20 is prevented from being damaged by the flexible printed circuit board 20 being accommodated in the second avoiding groove 3012.
Specifically, the plastic frame 301 includes a hollow rectangular bottom frame having a first supporting surface 301a, and the liquid crystal display panel 10 is fixed to the first supporting surface 301 a. A plane of the thin film transistor array substrate 100 opposite to the first plane 100a is fixed on the first supporting surface 301a of the rectangular bottom frame by a double-sided tape or a foam adhesive. An annular bulge is formed around the outer edge profile of the first supporting surface 301a, and the plane of the annular bulge away from the first supporting surface 301a is the second supporting surface 301 b. The second supporting surface 301b is used for supporting a cover plate, a touch panel or a front frame disposed on a side of the liquid crystal display panel 10 away from the backlight module 30. A notch is formed on the annular protrusion to expose the first supporting surface 301a, and a step area is formed between the first supporting surface 301a and the second supporting surface 301b where the notch is formed. The rubber frame 301 further comprises a side wall surrounding the rectangular bottom frame, the side wall of one end of the rubber frame 301 provided with the first avoidance groove 3011 is recessed inwards to form a second avoidance groove 3012, the second avoidance groove 3012 is communicated with the first avoidance groove 3011, the width of the first avoidance groove 3011 and the width of the second avoidance groove 3012 are equal to and larger than the width of the flexible printed circuit board 20, and therefore the flexible printed circuit board 20 can penetrate through the first avoidance groove 3011 and the second avoidance groove 3012.
The backlight module 30 further includes a back plate 302, a light guide plate 303, a point light source 304 and an optical film 305. The rubber frame 301 is fixed on the back plate 302. The light guide plate 303 is disposed in the back plate 302. The point light sources 304 are disposed on the inner wall of the sidewall of the back plate 302 and face the side of the light guide plate 303. The optical film 305 is disposed on the light-emitting surface of the light guide plate 303. The point light source 304 is a light emitting diode, light emitted from the point light source 304 is processed by the light guide plate 303 to form a surface light source, and the surface light source is processed by the optical film 305 to make the brightness of the light incident to the liquid crystal display panel 10 uniform.
The support portion 40 is a protrusion. The support portion 40 has a second plane 40a and a first side surface 40 b. The second plane 40a of the support portion 40 is a plane of the support portion 40 away from the first support surface 301a, i.e. the second plane 40a of the support portion 40 is a top surface of the support portion 40, and the second plane 40a of the support portion 40 is located on a side of the second support surface 301b close to the first support surface 301 a. The first side surface 40b of the supporting portion 40 is a side surface of the supporting portion 40 close to the second avoiding groove 3012. The first side surface 40b of the support portion 40 close to the second avoiding groove 3012 is flush with the first surface 3012a of the second avoiding groove 3012 close to the support portion 40, so that the flexible printed circuit 20 can be directly accommodated in the second avoiding groove 3012 after being supported and bent by the support portion 40, the flexible printed circuit 20 transitioning from the support portion 40 to the second avoiding groove 3012 is prevented from being bent again to enter the second avoiding groove 3012, and the flexible printed circuit 20 is prevented from being subjected to excessive stress.
The support 40 may have a rectangular parallelepiped shape, in which case the first side surface 40b and the second plane 40a are perpendicular to each other. Further, the surface of the support portion 40 contacting the flexible printed circuit board 20 is an arc-shaped surface 40c, that is, a right-angle corner between the first side surface 40b and the second plane 40a is subjected to an inverted R-angle process to form the arc-shaped surface 40c, so as to form a smooth arc-shaped surface 40c, and prevent the flexible printed circuit board 20 from being damaged due to burrs at the corner between the first side surface 40b and the second plane 40 a. The radius of the curved surface 40a is 0.3 ± 0.05 mm.
The supporting portion 40 may be integrally formed with the rubber frame 301 to simplify the manufacturing process. The supporting portion 40 may also be separated from the rubber frame 301, for example, the supporting portion 40 is a hard rubber block, so that the supporting portion 40 can play a role of supporting the flexible printed circuit board 20 and simultaneously can play a role of preventing the flexible printed circuit board 20 from being damaged. The hard rubber block may be fixed in the first avoiding groove 3011 of the first supporting surface 301a by a double-sided tape.
The length of the supporting portion 40 along the first direction is equal to the length of the first avoiding groove 3011 along the first direction, so that the supporting portion 40 is connected to the annular protrusion. The length of the support portion 40 in the first direction is greater than the length of the flexible printed circuit board 20 in the first direction to ensure that the support portion 40 can support the entire flexible printed circuit board 20 in the first direction. The first direction is perpendicular to the direction in which the support portion 40 points toward the liquid crystal display panel 10 and is parallel to the first support surface 301 a.
One end of the flexible printed circuit board 20 is bound on the liquid crystal display panel 10, and the other end of the flexible printed circuit board 20 passes through the first avoiding groove 3011 and is bent to be placed on the back of the backlight module 30. The first plane 100a of the tft array substrate 100 is located on a side of the second plane 40a of the supporting portion 40 away from the first supporting surface 301a, and a vertical distance between the first plane 100a and the second plane 40a is a second predetermined distance d2, so as to avoid assembly interference caused by the supporting portion 40 pushing against the flexible printed circuit board 20 due to assembly tolerance and thickness tolerance, that is, in the first avoiding groove 3011, after the supporting portion 40 and the flexible printed circuit board 20 are partially suspended, the supporting portion 40 supports the flexible printed circuit board 20. The first plane 100a of the thin film transistor array substrate 100 is a plane to which the flexible printed circuit board 20 is bonded. The second predetermined distance d2 is 0.2 ± 0.05 mm.
The utility model discloses display device sets up the supporting part through the first groove of keeping away that is used for acceping flexible printed circuit board at gluey frame, so that flexible printed circuit board when assembling on backlight unit and receiving the pulling force, the supporting part plays the supporting role to flexible printed circuit board, prevent that flexible printed circuit board from receiving excessively to drag and apply the power to liquid crystal display panel through the one end that flexible printed circuit board and liquid crystal display panel bound, lead to the local box thickness of liquid crystal display panel to change, local light and shade uneven phenomenon appears when display device shows, thereby improve user's visual experience.
The utility model also provides a glue frame, glue the frame and have first holding surface, from first holding surface convex second holding surface and by the first groove of keeping away that forms between first holding surface and the second holding surface, be provided with the supporting part that is arranged in first keeping away the groove on the first holding surface.
The utility model discloses set up the supporting part in the first groove of keeping away that the frame is used for acceping flexible printed circuit board to make the flexible printed circuit board of treating the equipment pass first keep away after the groove, the supporting part plays the supporting role to flexible printed circuit board, prevents that the one end that flexible printed circuit board received excessive dragging and bound through flexible printed circuit board and liquid crystal display panel in the assembling process from will exerting power to liquid crystal display panel, leads to the local box thickness of liquid crystal display panel to change.
The utility model also provides a backlight module, backlight module include above-mentioned gluey frame.
The utility model discloses backlight unit sets up the supporting part through the first groove of keeping away that is used for acceping flexible printed circuit board at gluey frame to make the flexible printed circuit board of waiting to install on backlight unit's the liquid crystal display panel on assemble on backlight unit, the supporting part plays the supporting role to flexible printed circuit board, prevent that flexible printed circuit board from receiving excessively to drag and apply to liquid crystal display panel through the one end that flexible printed circuit board and liquid crystal display panel bound, lead to the local box thickness of liquid crystal display panel to change.
The above description of the embodiments is only used to help understand the technical solution and the core idea of the present invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present invention in its various embodiments.
Claims (11)
1. The display device is characterized by comprising a liquid crystal display panel, a flexible printed circuit board and a backlight module, wherein the backlight module comprises a rubber frame, the rubber frame is provided with a first supporting surface, a second supporting surface protruding from the first supporting surface and a first avoiding groove formed between the first supporting surface and the second supporting surface, the liquid crystal display panel is fixed on the first supporting surface, a supporting part located in the first avoiding groove is arranged on the first supporting surface, one end of the flexible printed circuit board is bound on the liquid crystal display panel, the other end of the flexible printed circuit board penetrates through the first avoiding groove and is bent to be arranged on the back surface of the backlight module, and the supporting part is used for supporting the flexible printed circuit board in the first avoiding groove.
2. The display device according to claim 1, wherein a sidewall of one end of the plastic frame is recessed to form a second avoiding groove, the second avoiding groove and the first avoiding groove are located at the same end of the plastic frame and are communicated with each other, and the other end of the flexible printed circuit board passes through the first avoiding groove, is bent for a first time to pass through the second avoiding groove, and is bent for a second time to be disposed on the back surface of the backlight module.
3. The display device according to claim 2, wherein a first side surface of the support portion adjacent to the second avoiding groove is flush with a first surface of the second avoiding groove adjacent to the support portion.
4. The display device according to claim 1, wherein the liquid crystal display panel comprises a thin film transistor array substrate, one end of the thin film transistor array substrate, which is close to the supporting portion, is bonded with the flexible printed circuit board, one end of the thin film transistor array substrate, which is bonded with the flexible printed circuit board, is provided with a glue layer, which is close to a second side surface of the supporting portion, and the glue layer is fixed with the flexible printed circuit board, and a first preset distance is provided between the glue layer and the supporting portion.
5. The display device according to claim 4, wherein the first plane of the thin film transistor array substrate is located on a side of the second plane of the supporting portion away from the first supporting surface, a vertical distance between the first plane and the second plane is a second predetermined distance, the first plane of the thin film transistor array substrate is a plane where the flexible printed circuit board is bonded, and the second plane of the supporting portion is a plane where the supporting portion is away from the first supporting surface.
6. The display device according to claim 1, wherein a length of the support portion in a first direction perpendicular to a direction in which the support portion is directed to the liquid crystal display panel and parallel to the first support surface is larger than a length of the flexible printed circuit board in the first direction.
7. The display device according to claim 1, wherein the support portion is a protrusion.
8. The display device according to claim 7, wherein a surface of the support portion contacting the flexible printed circuit board is an arc-shaped surface.
9. The display device according to claim 1, wherein the support portion is a hard rubber block.
10. The utility model provides a glue frame, its characterized in that, glue the frame and have first holding surface, follow the convex second holding surface of first holding surface and by first holding surface with the first groove of keeping away that forms between the second holding surface, be provided with on the first holding surface and be located the first supporting part of keeping away in the groove.
11. A backlight module, comprising the adhesive frame of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920768598.7U CN209946600U (en) | 2019-05-27 | 2019-05-27 | Rubber frame, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920768598.7U CN209946600U (en) | 2019-05-27 | 2019-05-27 | Rubber frame, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209946600U true CN209946600U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920768598.7U Active CN209946600U (en) | 2019-05-27 | 2019-05-27 | Rubber frame, backlight module and display device |
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| Country | Link |
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| CN (1) | CN209946600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082961A (en) * | 2019-05-27 | 2019-08-02 | 武汉华星光电技术有限公司 | Glue frame, backlight module and display device |
-
2019
- 2019-05-27 CN CN201920768598.7U patent/CN209946600U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082961A (en) * | 2019-05-27 | 2019-08-02 | 武汉华星光电技术有限公司 | Glue frame, backlight module and display device |
| CN110082961B (en) * | 2019-05-27 | 2024-04-05 | 武汉华星光电技术有限公司 | Glue frame, backlight module and display device |
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