CN213122536U - Backlight module and display panel - Google Patents
Backlight module and display panel Download PDFInfo
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- CN213122536U CN213122536U CN202022575679.0U CN202022575679U CN213122536U CN 213122536 U CN213122536 U CN 213122536U CN 202022575679 U CN202022575679 U CN 202022575679U CN 213122536 U CN213122536 U CN 213122536U
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Abstract
The utility model provides a backlight module and display panel. The backlight module comprises a back plate, a light guide plate and an optical film layer, wherein the light guide plate and the optical film layer are sequentially stacked on the back plate; the overlapped area of the back plate, the light guide plate and the optical film layer is provided with a through hole, and the back plate extends into the through hole and covers the end surfaces of the light guide plate and the optical film layer, which are exposed in the through hole; the backlight module further comprises a shading structure, the shading structure is arranged in the through hole and located on one side, close to the end face of the light guide plate, of the back plate, and the shading structure at least covers the portion, close to the optical film layer, of the end face, exposed in the through hole, of the light guide plate. This backlight unit is through setting up shading structure, can shelter from and absorb the light that the light guide plate exposes on the terminal surface in the through-hole and jet out to avoid this part light shine on the terminal surface that exposes in the through-hole of optics rete, and then the phenomenon that appears the bright line when avoiding the large visual angle of opening edge of through-hole to watch, promote display effect and show the yield.
Description
Technical Field
The utility model belongs to the technical field of show, concretely relates to backlight module and display panel.
Background
At present, in the design of Liquid Crystal Display (LCD), narrow frames are continuously pursued, and the reduction of the frames brings about the problem of bright lines. When the lapping width of the shading glue and the optical film material in the backlight module is fixed, bright lines (end surface light collection of the optical film material) can be seen at a certain visual angle, and especially, the display effect is greatly influenced by opening hole project products in a display screen. At present, the commonly adopted method is to plate black nickel on the wall of the opening hole in the display screen, but the method only can reduce the degree of the bright line at the edge of the opening hole and cannot completely eliminate the bright line at the edge of the opening hole, and the method leads the cost of the backlight module to be increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that bright line can be seen at the middle opening edge of liquid crystal display, a backlight unit and display panel are provided. This backlight unit is through setting up shading structure, can shelter from and absorb the light that the light guide plate exposes on the terminal surface in the through-hole and jet out to avoid this part light direct irradiation to the terminal surface in the through-hole that exposes of optics rete, avoid simultaneously this part light to penetrate the terminal surface in the through-hole that exposes of optics rete after the part reflection that the backplate extends to in the through-hole on, and then the phenomenon of bright line appears when avoiding the large visual angle of opening edge of through-hole to watch, promotion display effect and demonstration yield.
The utility model provides a backlight module, which comprises a back plate, a light guide plate and an optical film layer, wherein the light guide plate and the optical film layer are sequentially overlapped on the back plate; the overlapped area of the back plate, the light guide plate and the optical film layer is provided with a through hole, and the back plate extends into the through hole and covers the end faces of the light guide plate and the optical film layer, which are exposed in the through hole;
the backlight module further comprises a shading structure, the shading structure is arranged in the through hole and is positioned on one side, close to the end face of the light guide plate, of the back plate, and the shading structure at least covers the portion, close to the optical film layer, of the end face, exposed in the through hole, of the light guide plate.
Optionally, the light shielding structure covers the entire end surface of the light guide plate exposed in the through hole.
Optionally, the backlight module further comprises a reflective layer, the reflective layer is disposed on a side of the light guide plate facing away from the optical film layer, and the reflective layer is located between the light guide plate and the back plate; the through hole is further extended and arranged in the reflecting layer;
the shading structure also coats the whole end face of the reflecting layer exposed in the through hole.
Optionally, the shading structure comprises a sleeve portion and a flanging portion, wherein the flanging portion is arranged around the edge of a sleeve opening at one end of the sleeve portion and is connected with the sleeve portion into a whole;
the sleeve portion is nested in the through hole, the flanging portion is arranged at one end, close to the optical film layer, of the sleeve portion, and the flanging portion extends to a position between the optical film layer and the light guide plate.
Optionally, the light guide plate further comprises a light shielding adhesive layer, the light shielding adhesive layer is arranged on one side of the optical film layer, which is far away from the light guide plate, and the light shielding adhesive layer surrounds the opening at one end of the through hole;
the shading adhesive layer is in contact with the end part of the back plate extending out of the through hole, and the shading adhesive layer also extends to be in lap joint with the surface of one side of the optical film layer, which is far away from the light guide plate.
Optionally, in a radial direction of the opening at one end of the through hole, a width of a portion of the flange portion extending to a position between the optical film layer and the light guide plate is equal to a width of a lap joint area between the light shielding adhesive layer and the optical film layer.
Optionally, the light shielding structure is made of black light shielding material.
Optionally, the thickness of the sleeve part ranges from 0.01 mm to 0.05 mm; the thickness range of the flanging part is 0.01-0.05 mm.
Optionally, the back plate includes a bottom wall and a side wall, and the bottom wall and the side wall are connected with each other and enclose to form a cavity; the light guide plate and the optical film layer are arranged in the cavity;
the backlight module also comprises a light source which is arranged on the side wall, and the light emitting surface of the light source faces the edge end face of the light guide plate;
or the light source is arranged on the bottom wall, and the light emergent surface of the light source faces to one side plate surface of the light guide plate.
The utility model also provides a display panel, which comprises a display module and the backlight module;
the display module is arranged on the light-emitting side of the backlight module.
The utility model has the advantages that: the utility model provides a backlight module, through making the light-shielding structure be located between the terminal surface that exposes in the through-hole of the part that the backplate extends to in the through-hole and light guide plate, and through making the part that is close to the optics rete of the terminal surface that exposes in the through-hole of at least cladding light guide plate of light-shielding structure, the light that jets out on the terminal surface that the light guide plate exposes in the through-hole can be sheltered from and absorbed to the light of light shielding structure, thereby avoid this part light direct irradiation to the terminal surface that exposes in the through-hole of optics rete, avoid this part light to jet into on the terminal surface that exposes in the through-hole of optics rete after the backplate extends to the partial reflection in the through-hole simultaneously, and then appear the phenomenon of bright line when avoiding.
The utility model provides a display panel through adopting above-mentioned backlight unit, has promoted this display panel's display effect and demonstration yield.
Drawings
FIG. 1 is a schematic sectional view of a backlight module at an opening position in the prior art;
fig. 2 is a schematic cross-sectional view of the backlight module at the position of the through hole provided therein according to the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the light shielding structure in FIG. 2;
fig. 4 is a schematic diagram of an arrangement scheme of a light source in a backlight module according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating another arrangement scheme of a light source in a backlight module according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a part of a display panel according to an embodiment of the present invention.
Wherein the reference numerals are:
1. a back plate; 11. a bottom wall; 12. a side wall; 13. retaining walls; 2. a light guide plate; 21. an edge end face; 22. a side plate surface; 3. an optical film layer; 4. a through hole; 5. a light shielding structure; 51. a sleeve portion; 52. flanging part; 6. a reflective layer; 7. a light-shielding adhesive layer; 8. a light source; 9. a display module; 10. a backlight module; 101. and (6) opening holes.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the backlight module and the display panel in further detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, in the prior art, at the position of the opening 101 in the backlight module 10, the reflected light from the light guide plate 2 or the back plate 1 extending to the retaining wall 13 in the opening 101 may be incident on the end surface of the optical film layer 3, and after the end surface of the optical film layer 3 reflects or refracts the incident light, the light is emitted from the display module 9 disposed at the light emitting side of the backlight module 10, when the screen is viewed in the large viewing angle direction, the bright line at the edge of the opening can be observed by human eyes around the edge of the opening 101, which affects the display effect of the display product and reduces the yield of the display product.
In view of the above technical problem, an embodiment of the present invention provides a backlight module, as shown in fig. 2 and 3, including a back plate 1, a light guide plate 2 and an optical film layer 3, wherein the light guide plate 2 and the optical film layer 3 are sequentially stacked on the back plate 1; a through hole 4 is formed in the overlapping area of the back plate 1, the light guide plate 2 and the optical film layer 3, the back plate 1 extends into the through hole 4 and covers the end faces of the light guide plate 2 and the optical film layer 3 exposed in the through hole 4; the backlight module further comprises a light shielding structure 5, the light shielding structure 5 is disposed in the through hole 4, the light shielding structure 5 is located on one side of the back plate 1 close to the end face of the light guide plate 2, and the light shielding structure 5 at least covers a portion, close to the optical film layer 3, of the end face of the light guide plate 2 exposed in the through hole 4.
After the hole is formed in the back plate 1, the portion of the back plate 1 around the hole may be stretched, so that the stretched portion of the back plate 1 extends into the through hole 4, and covers the end surfaces of the light guide plate 2 and the optical film layer 3 exposed in the through hole 4.
The light shielding structure 5 is located between the part of the back plate 1 extending to the through hole 4 and the end face of the light guide plate 2 exposed in the through hole 4, and the light shielding structure 5 at least covers the part of the end face of the light guide plate 2 exposed in the through hole 4, which is close to the optical film layer 3, the light shielding structure 5 can shield and absorb light emitted from the end face of the light guide plate 2 exposed in the through hole 4, so that the part of light is prevented from directly irradiating the end face of the optical film layer 3 exposed in the through hole 4, and the part of light is prevented from being reflected by the part of the back plate 1 extending to the through hole 4 and then being incident on the end face of the optical film layer 3 exposed in the through hole 4, thereby preventing bright lines from appearing when the opening edge of the through hole 4 is viewed at a large visual angle, and.
Preferably, the light shielding structure 5 covers the entire end surface of the light guide plate 2 exposed in the through-hole 4. So set up, can ensure that light guide plate 2 exposes on the terminal surface in through-hole 4 the light that jets out can not shine to the terminal surface that exposes in through-hole 4 of optical film layer 3 completely to the phenomenon of bright line appears when avoiding the large visual angle of opening edge of through-hole 4 to watch.
Optionally, in this embodiment, the backlight module further includes a reflective layer 6, the reflective layer 6 is disposed on a side of the light guide plate 2 away from the optical film layer 3, and the reflective layer 6 is located between the light guide plate 2 and the back plate 1; the through hole 4 is also extended and opened in the reflecting layer 6; the light shielding structure 5 also covers the entire end face of the reflective layer 6 exposed in the through hole 4. So set up, can further ensure through the light of reflection stratum 6 reflection and get into light guide plate 2 and follow the light that exposes on the terminal surface in through-hole 4 of light guide plate 2 and go out can not shine to the terminal surface that exposes in through-hole 4 of optical film layer 3 after the reflection stratum 6 reflection to the phenomenon of bright line appears when avoiding the large visual angle of opening edge of through-hole 4 to watch. In addition, the arrangement of the reflecting layer 6 can enable the light irradiated to the back plate 1 by the light source to be almost totally emitted into the light guide plate 2 after being reflected by the reflecting layer 6, thereby improving the utilization rate of the light emitted by the light source.
In this embodiment, the light shielding structure 5 includes a sleeve portion 51 and a flanged portion 52, the flanged portion 52 is disposed around an edge of a cylindrical opening at one end of the sleeve portion 51, and is connected with the sleeve portion 51 as a whole; the sleeve portion 51 is nested in the through hole 4, the flanging portion 52 is disposed at one end of the sleeve portion 51 close to the optical film layer 3, and the flanging portion 52 extends between the optical film layer 3 and the light guide plate 2. So set up, make light-shielding structure 5 not only can be with the terminal surface cladding of the exposure of light guide plate 2 in through-hole 4, but also can be with the binding face edge cladding of the adjacent its terminal surface of light guide plate 2 and laminating mutually with optics rete 3, thereby can further avoid from the terminal surface of the exposure of light guide plate 2 in through-hole 4 and adjacent its terminal surface and with the terminal surface of the binding face edge outgoing of laminating mutually of optics rete 3 incident to the terminal surface of the exposure in through-hole 4 of optics rete on, and then the phenomenon of bright line appears when can further avoiding the big visual angle of opening edge of through-hole 4 to watch.
Optionally, the backlight module further includes a light-shielding adhesive layer 7, the light-shielding adhesive layer 7 is disposed on a side of the optical film layer 3 away from the light guide plate 2, and the light-shielding adhesive layer 7 surrounds the opening at one end of the through hole 4; the light-shielding adhesive layer 7 is contacted with the end part of the back plate 1 extending from the through hole 4, and the light-shielding adhesive layer 7 also extends to be overlapped with the surface of one side of the optical film layer 3 departing from the light guide plate 2. The shading glue layer 7 can shade part of light emitted from the opening edge of the through hole 4, so that the degree of bright lines when the opening edge of the through hole 4 is viewed at a large visual angle can be reduced.
Optionally, in this embodiment, along the radial direction L of the opening at one end of the through hole 4, the width M of the portion of the flanging portion 52 extending between the optical film layer 3 and the light guide plate 2 is equal to the width M of the overlapping area of the light-shielding glue layer 7 and the optical film layer 3. So set up, shading glue film 7 jets out sheltering from of light to the opening edge of through-hole 4, and shading structure 5 in addition jets out sheltering from of light to the terminal surface that exposes in through-hole 4 of light guide plate 2 and the binding face edge that is close to its terminal surface and laminate mutually with optics rete 3, the phenomenon that appears the bright line when can thoroughly avoid the opening edge large visual angle of through-hole 4 to watch.
Alternatively, the light shielding structure 5 employs a black light shielding material. For example, the light shielding structure is made of black organic resin material such as PET material, or the light shielding structure may be made of black inorganic insulating material. The shading structure 5 can shade and absorb the light rays incident thereon, and reduce or avoid the reflection of the light rays incident thereon.
Optionally, the thickness of the sleeve portion 51 ranges from 0.01 to 0.05 mm; the thickness of the flange part 52 ranges from 0.01 mm to 0.05 mm. The thickness of the sleeve portion 51 and the flange portion 52 is set to sufficiently shield and absorb light incident thereon, thereby reducing or avoiding reflection of light incident thereon.
Optionally, as shown in fig. 4, the back plate 1 includes a bottom wall 11 and a side wall 12, and the bottom wall 11 and the side wall 12 are connected to each other and enclose to form a cavity; the light guide plate 2 and the optical film layer 3 are arranged in the cavity; the backlight module further includes a light source 8, the light source 8 is disposed on the sidewall 12, and a light-emitting surface of the light source 8 faces the edge surface 21 of the light guide plate 2. Namely, the backlight module adopts a side-in light source.
Alternatively, as shown in fig. 5, the light source 8 may also be disposed on the bottom wall 11, and the light emitting surface of the light source 8 faces the side plate surface 22 of the light guide plate 2. Namely, the backlight module can also adopt a direct type light source.
The utility model provides a backlight module, through making the light-shielding structure be located between the terminal surface that exposes in the through-hole of the part that the backplate extends to in the through-hole and light guide plate, and through making the part that is close to the optics rete of the terminal surface that exposes in the through-hole of at least cladding light guide plate of light-shielding structure, the light that jets out on the terminal surface that the light guide plate exposes in the through-hole can be sheltered from and absorbed to the light of light shielding structure, thereby avoid this part light direct irradiation to the terminal surface that exposes in the through-hole of optics rete, avoid this part light to jet into on the terminal surface that exposes in the through-hole of optics rete after the backplate extends to the partial reflection in the through-hole simultaneously, and then appear the phenomenon of bright line when avoiding.
The embodiment of the present invention further provides a display panel, as shown in fig. 6, including a display module 9, and further including a backlight module 10 in the above embodiments; the display module 9 is disposed on the light-emitting side of the backlight module 10.
The through hole 4 in the backlight module 10 can be used for arranging a camera, so that the display panel can realize shooting under the screen, and meanwhile, the display panel can realize a full-face screen.
By adopting the backlight module in the embodiment, the display effect and the display yield of the display panel are improved.
The display panel provided by the embodiment can be any product or component with a display function, such as an LCD panel, an LCD television, a display, a mobile phone, a navigator and the like.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A backlight module comprises a back plate, a light guide plate and an optical film layer, wherein the light guide plate and the optical film layer are sequentially stacked on the back plate; the overlapped area of the back plate, the light guide plate and the optical film layer is provided with a through hole, and the back plate extends into the through hole and covers the end faces of the light guide plate and the optical film layer, which are exposed in the through hole; it is characterized in that the preparation method is characterized in that,
the backlight module further comprises a shading structure, the shading structure is arranged in the through hole and is positioned on one side, close to the end face of the light guide plate, of the back plate, and the shading structure at least covers the portion, close to the optical film layer, of the end face, exposed in the through hole, of the light guide plate.
2. A backlight module according to claim 1, wherein the light shielding structure covers the entire end surface of the light guide plate exposed in the through hole.
3. The backlight module according to claim 2, further comprising a reflective layer disposed on a side of the light guide plate facing away from the optical film layer, wherein the reflective layer is disposed between the light guide plate and the back plate; the through hole is further extended and arranged in the reflecting layer;
the shading structure also coats the whole end face of the reflecting layer exposed in the through hole.
4. The backlight module according to any one of claims 1 to 3, wherein the light shielding structure comprises a sleeve portion and a flange portion, and the flange portion is disposed around an edge of a cylindrical opening of the sleeve portion and integrally connected to the sleeve portion;
the sleeve portion is nested in the through hole, the flanging portion is arranged at one end, close to the optical film layer, of the sleeve portion, and the flanging portion extends to a position between the optical film layer and the light guide plate.
5. The backlight module according to claim 4, further comprising a light-shielding adhesive layer disposed on a side of the optical film layer away from the light guide plate, wherein the light-shielding adhesive layer surrounds the opening at one end of the through hole;
the shading adhesive layer is in contact with the end part of the back plate extending out of the through hole, and the shading adhesive layer also extends to be in lap joint with the surface of one side of the optical film layer, which is far away from the light guide plate.
6. The backlight module according to claim 5, wherein the width of the portion of the flange extending between the optical film and the light guide plate is equal to the width of the overlapping area of the light-shielding adhesive layer and the optical film along the radial direction of the opening at one end of the through hole.
7. The backlight module as claimed in claim 1, wherein the light shielding structure is made of black light shielding material.
8. The backlight module according to claim 4, wherein the sleeve portion has a thickness in a range of 0.01 to 0.05 mm; the thickness range of the flanging part is 0.01-0.05 mm.
9. The backlight module according to claim 1, wherein the back plate comprises a bottom wall and a side wall, and the bottom wall and the side wall are connected with each other and enclose to form a cavity; the light guide plate and the optical film layer are arranged in the cavity;
the backlight module also comprises a light source which is arranged on the side wall, and the light emitting surface of the light source faces the edge end face of the light guide plate;
or the light source is arranged on the bottom wall, and the light emergent surface of the light source faces to one side plate surface of the light guide plate.
10. A display panel comprising a display module, and further comprising the backlight module of any one of claims 1-9;
the display module is arranged on the light-emitting side of the backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575679.0U CN213122536U (en) | 2020-11-10 | 2020-11-10 | Backlight module and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022575679.0U CN213122536U (en) | 2020-11-10 | 2020-11-10 | Backlight module and display panel |
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| Publication Number | Publication Date |
|---|---|
| CN213122536U true CN213122536U (en) | 2021-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022575679.0U Active CN213122536U (en) | 2020-11-10 | 2020-11-10 | Backlight module and display panel |
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| CN (1) | CN213122536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359341A (en) * | 2021-06-24 | 2021-09-07 | 武汉华星光电技术有限公司 | Display module, manufacturing method thereof and mobile terminal |
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2020
- 2020-11-10 CN CN202022575679.0U patent/CN213122536U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359341A (en) * | 2021-06-24 | 2021-09-07 | 武汉华星光电技术有限公司 | Display module, manufacturing method thereof and mobile terminal |
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