CN212781605U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN212781605U CN212781605U CN202022275967.4U CN202022275967U CN212781605U CN 212781605 U CN212781605 U CN 212781605U CN 202022275967 U CN202022275967 U CN 202022275967U CN 212781605 U CN212781605 U CN 212781605U
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Abstract
The application discloses a backlight module and a liquid crystal display device, which comprise a back plate, a light bar, a first optical film, a rubber frame and an adhesive layer; the corresponding optical film is fixed on the opposite side of the light bar through the adhesive layer, so that the heating variable quantity of the corresponding optical film is concentrated on one side of the light bar, the reliability of fixing the corresponding optical film in the vehicle-mounted backlight module and the narrow frame of the backlight module are favorably realized, and the problems of edge bright edges and firefly effect of the backlight module are favorably eliminated or weakened.
Description
Technical Field
The application relates to the technical field of display, in particular to the technical field of backlight, and specifically relates to a backlight module and a liquid crystal display device.
Background
With the development of the vehicle-mounted display technology, the appearance requirement of the vehicle-mounted backlight module is higher and higher, and the vehicle-mounted backlight module tends to be large in screen size and narrow in frame; in order to realize the narrow frame, the vehicle-mounted backlight module at the present stage usually sticks double-sided adhesive tape on the steps of the light guide plate, and fixes corresponding optical films on one side of the backlight module in the length direction; and the optical film is assembled and fixed by taking the fixed side as a reference, and the expansion space of the optical film is reserved on the other side.
Because the reliability requirement of the vehicle-mounted backlight module is relatively strict, a boss is generally designed on the light guide plate and used for fixing the corresponding optical diaphragm; in view of the limitation of the narrow frame of the backlight module, there is not enough space in the module length direction to fix the optical film (the expansion space of the optical film is not enough), and the light guide plate boss is designed on the lower side of the frame, which is the FPC (Flexible Printed Circuit), which is relatively wide, so that the problems of the edge bright edge of the backlight module and the firefly effect are easily caused.
SUMMERY OF THE UTILITY MODEL
The application provides a backlight unit and liquid crystal display device has solved on-vehicle backlight unit's marginal bright border and the problem of firefly effect of using.
In a first aspect, the present application provides a backlight module, which includes a back plate, a light bar, a first optical film, a glue frame, and a glue layer; the back plate is at least provided with a first retaining wall and a second retaining wall which are arranged on opposite sides; the lamp strip is arranged on the inner side surface of the first retaining wall; the light incident surface of the first optical film faces the supporting surface of the back plate; the laminating surface of the rubber frame faces the light emitting surface of the first optical film; and the pressing surface is adhered with the light emitting surface of the first optical film through an adhesive layer on one side close to the second retaining wall.
In a first implementation manner of the first aspect, a boss is disposed on the pressing surface, and the boss is bonded to the light emitting surface of the first optical film through the adhesive layer; and the boss covers at least part of the press-fit surface.
In a second implementation manner of the first aspect, the boss is located on the pressing surface in the length direction and in a middle area of the pressing surface.
In a third embodiment of the first aspect, the adhesive layer has an interference with the first optical film.
In a fourth embodiment of the first aspect, based on the third embodiment of the first aspect, the interference is 0.08mm to 0.12 mm.
In a fifth implementation form of the first aspect, the boss is a rectangular parallelepiped, the length of the boss is 20mm to 30mm, the width of the boss is 2mm to 3mm, and the height of the boss is 0.1mm to 0.5 mm.
In a sixth implementation form of the first aspect, the thickness of the adhesive layer is a distance between the boss and the first optical film.
In a seventh implementation manner of the first aspect, the backlight module further includes a second optical film and a light-shielding elastic fixing member; the light incident surface of the second optical film is far away from the light incident surface of the first optical film, and the light emergent surface of the second optical film faces the light incident surface of the first optical film; one end of the shading elastic fixing piece is connected with the first retaining wall, the other end of the shading elastic fixing piece is connected with the light-emitting surface of the second optical film, and the shading elastic fixing piece is positioned between the light-in surface of the first optical film and the light-emitting surface of the second optical film; the shading elastic fixing piece at least partially shades the light bar.
In an eighth implementation manner of the first aspect, based on the seventh implementation manner of the first aspect, the light-shielding elastic fixing member is black single-sided adhesive.
In an eighth implementation manner of the first aspect, in a ninth implementation manner of the first aspect, the length of the single-sided adhesive is 20mm to 30mm, and the width of the single-sided adhesive is 5mm to 10 mm.
In a tenth embodiment of the first aspect, in any one of the embodiments of the first aspect, the second retaining wall at least partially overlaps the first optical film.
In an eleventh implementation manner of the first aspect, in the tenth implementation manner of the first aspect, a distance between the first optical film and the first retaining wall is greater than a distance between the second optical film and the first retaining wall.
In a twelfth implementation manner of the first aspect, based on the eleventh implementation manner of the first aspect, a distance from the first optical film to the second retaining wall is equal to a distance from the second optical film to the second retaining wall.
In a thirteenth embodiment based on any one of the embodiments of the first aspect, the adhesive layer is a double-sided tape.
In a second aspect, the present application provides a liquid crystal display device, which includes the backlight module and the liquid crystal panel according to any one of the embodiments of the first aspect, wherein the liquid crystal panel is disposed on a back surface of the laminating surface.
In a first embodiment of the second aspect, the liquid crystal display device further includes a flexible circuit board; the flexible circuit board is connected with the liquid crystal display.
The application provides a backlight unit and liquid crystal display device is fixed in the offside of lamp strip through the blooming that the adhesive layer will correspond, makes the volume of being heated of corresponding blooming concentrate on lamp strip one side, is favorable to realizing the fixed reliability of corresponding blooming and backlight unit's narrow frame among the on-vehicle backlight unit of using to and be of value to eliminate or weaken backlight unit's marginal bright border, the problem of firefly effect.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural view of the rubber frame in fig. 1.
Fig. 3 is a partially enlarged schematic view of the rubber frame and the boss in fig. 2.
Fig. 4 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram illustrating a backlight module provided in this embodiment, which includes a back plate 10, a light bar 60, a first optical film 40, a plastic frame 20, and an adhesive layer 30; the bottom of the back plate 10 facing the light emitting direction is a supporting surface 13, the side wall of the back plate 10 at least includes a first retaining wall 11 and a second retaining wall 12, wherein the first retaining wall 11 and the second retaining wall 12 are disposed on opposite sides, and both the first retaining wall 11 and the second retaining wall 12 can be, but are not limited to, long sides of the back plate 10, and also can be short sides of the back plate 10; the back plate 10 may be, but not limited to, integrally cast from sheet metal, made of other materials, or manufactured by other processes; the first retaining wall 11 and the second retaining wall 12 have different heights, and the height of the first retaining wall 11 is greater than that of the second retaining wall 12. The lamp strip 60 is fixed on the inner side surface of the first retaining wall 11; the light incident surface of the first optical film 40 faces the supporting surface 13 of the back plate 10, the first optical film 40 does not overlap with the light bar 60, the first optical film 40 may at least partially overlap with the second retaining wall 12, and the second retaining wall 12 can be supported by the first optical film 40; the laminating surface 21 of the rubber frame 20 faces the light-emitting surface of the first optical film 40 and is bonded with the light-emitting surface of the first optical film 40 through the adhesive layer 30, wherein the adhesive layer 30 fixes the first optical film 40 at the side close to the second retaining wall 12, when thermal expansion and cold contraction occur, the expansion direction of the first optical film 40 substantially faces the first retaining wall 11, so that the expansion directions of the corresponding optical films are consistent, and no expansion space or a small expansion space is reserved at the side of the second retaining wall 12 for the optical films, which is beneficial to realizing the reliability of fixing the corresponding optical films and the narrowing of the frame of the backlight module in the vehicle-mounted backlight module, and is beneficial to eliminating or weakening the problem of bright edge at the edge and the firefly effect of the backlight module caused by the fact that the adhesive layer 30 is too close to the light bar 60 and has a certain reflection effect on the light emitted by the light bar 60.
In this embodiment, the light-emitting surface and the light-entering surface refer to the front surface or the back surface of the corresponding optical film, and the light-emitting surface is a plane facing one side of the liquid crystal panel 100, whereas the light-entering surface is a plane facing the supporting surface 13 of the back plate 10. For economic reasons, the adhesive layer 30 may be, but not limited to, a double-sided adhesive tape, and may also be other connecting members to connect the pressing surface 21/boss 22 and the first optical film 40.
It can be understood that, when the backlight module operates, a large amount of heat can be generated, and the corresponding optical film needs a certain expansion space to adapt to the thermal expansion under the influence of the heat, and if the corresponding optical film does not have the thermal expansion space, the corresponding optical film can bulge in some directions, which affects the backlight effect of the liquid crystal display 100, and further affects the overall display effect; and because it is in a vehicle-mounted moving environment, the fixation of these optical films requires more excellent reliability than other, more stationary use environments.
As shown in fig. 2 or fig. 3, in one embodiment, a boss 22 is disposed on the pressing surface 21, the boss 22 may be, but is not limited to, integrally formed with the rubber frame 20, and the boss 22 is adhered to the light-emitting surface of the first optical film 40 through the adhesive layer 30, it is understood that the boss 22 is disposed to facilitate adjusting the thickness of the adhesive layer 30, and the thickness of the adhesive layer 30 is at least the distance between the boss 22 and the first optical film 40, or an interference is also required. To maintain the planar angle of the first optical film 40 in space. It will be appreciated that the projection 22 covers at least a portion of the bonding surface 21, i.e., the projection 22 has an area that is smaller than the bonding surface 21, and that is larger than the bonding surface 21, depending on the reliability of the first optical film 40, and the reflective region is formed as little as possible, thereby minimizing or reducing the edge glow and/or the glowing effect.
It is understood that the press-fit surfaces 21 include two press-fit surfaces 21 on opposite sides in the length direction and two press-fit surfaces 21 on opposite sides in the width direction. The technical object intended in the present application can be achieved regardless of whether the boss 22 is located on the press-fit surface 21 in the length direction or the width direction; preferably, when the boss 22 is located on the lengthwise pressing surface 21, and is located in the middle area of the pressing surface 21 and away from the light bar 60, a better expected technical effect can be obtained.
It should be noted that the adhesive layer 30 is adhered to the central region of the first optical film 40 in the longitudinal direction or the width direction, so that the balance can be maintained, and the adhesive layer 30 is located at the edge of the first optical film 40 or the vicinity thereof, so that the reflection of light can be minimized. Correspondingly, if the use of the bosses 22 is added in some embodiments to reduce the thickness of the adhesive layer 30, the positioning of the bosses 22 should take into account the bonding position of the adhesive layer 30 on the first optical film 40 for the corresponding boss 22 positioning design.
In one embodiment, the boss 22 is designed as a rectangular parallelepiped, the length of the boss 22 may range from, but is not limited to, 20mm to 30mm, the width of the boss 22 may range from, but is not limited to, 2mm to 3mm, and the height of the boss 22 ranges from 0.1mm to 0.5 mm; preferably, the height of the boss 22 may be designed to be 0.2mm, or 0.3 mm.
In one embodiment, the interference between the adhesive layer 30 and the first optical film 40 is an amount of interference, and it is understood that the interference may be a pressing depth of the adhesive layer 30 when the adhesive layer 30 is bonded to the first optical film 40, so as to ensure an allowable deformation range of the adhesive layer 30 and a bonding strength therebetween, and preferably, the interference in the present application is designed to be in a range of 0.08mm to 0.12mm, and more preferably, the interference in the present application is 0.1 mm.
The interference in the present embodiment refers to a difference between a first thickness of the adhesive layer 30 in an original state (when the adhesive layer is not compressed) and a second thickness of the adhesive layer 30 that is mounted between the first optical film 40 and the boss 22/the press-fit surface 21 and compressed or squeezed.
As shown in fig. 1 or fig. 4, in one embodiment, the backlight module further includes a second optical film 50 and a light-shielding elastic fixing member 150; the light incident surface of the second optical film 50 is far away from the light incident surface of the first optical film 40, and the light emitting surface of the second optical film 50 faces the light incident surface of the first optical film 40; the side surface of the first optical film 40 and the side surface of the second optical film 50 on the side of the second barrier wall 12 may be, but not limited to, flush, that is, the distance from the first optical film 40 to the second barrier wall 12 is equal to the distance from the second optical film 50 to the second barrier wall 12, and at least partially covers the second barrier wall 12; the distance from the first optical film 40 to the first retaining wall 11 is greater than the distance from the second optical film 50 to the first retaining wall 11. One end of the light-shielding elastic fixing member 150 is connected to part or all of the upper end surface and the outer side surface of the first retaining wall 11, the other end of the light-shielding elastic fixing member 150 is connected to the light-emitting surface of the second optical film 50, and the light-shielding elastic fixing member 150 is located between the light-incident surface of the first optical film 40 and the light-emitting surface of the second optical film 50; the light-shielding elastic fixing member 150 at least partially shields the light bar 60.
It can be understood that this does not affect the degree of freedom of the first optical film 40 in expansion and contraction, and the contact area between the light-shielding elastic fixing member 150 and the light incident surface of the first optical film 40 is flat and smooth, and may be only in contact with each other and have no connection function; the light-shielding elastic fixing member 150 may be connected by forming a hole in the second optical film 50, or may be implemented by using a black single-sided adhesive, for example, one end of the single-sided adhesive is bonded to the light-emitting surface of the second optical film 50, and the other end of the single-sided adhesive is bonded along part or all of the upper end surface and the outer side surface of the first retaining wall 11, wherein one end of the single-sided adhesive is parallel to the light-emitting surface of the second optical film 50 and exceeds the region of the light-emitting surface of the second optical film 50, and then is obliquely disposed to the upper end surface of the first retaining wall 11, and is bonded to part or all of the upper end surface and the outer side surface of the first retaining wall 11, it can be understood that, in this design, when the second optical film 50 is subjected to heat and cold shrinkage, the single-sided adhesive does not hinder the expansion and contraction within a certain range, and the single-sided adhesive is set to be black, so as to shield the light source of the, so as to avoid the occurrence of unwanted reflected light, and is beneficial to eliminating or weakening the problems of edge bright edge and firefly effect of the backlight module.
Wherein, the length of the single-sided adhesive can range from 20mm to 30mm, for example, 25mm can be set as the optimization; the width of the single-sided adhesive may range from, but is not limited to, 5mm to 10 mm; for example, it may be set to 2.5mm as preferable.
In one embodiment, the backlight module may further include a reflective sheet 70, a light guide plate 80, and a third optical film 90 sequentially disposed on the supporting surface 13 of the backlight module in a direction toward the first optical film 40, wherein the light guide plate 80 is opposite to the light bar 60 to guide light emitted from the light bar 60, so that more uniform light is emitted from the light guide plate 80, and the reflective sheet 70 may re-reflect light emitted from the bottom of the light guide plate 80 into the light guide plate 80, so as to improve the utilization efficiency of the light. The third optical film 90 is positioned between the light guide plate 80 and the second optical film 50, and overlaps the second optical film 50. In terms of the distance from the first retaining wall 11, the distance from the reflective sheet 70 to the first retaining wall 11 is less than the distance from the light guide plate 80 to the first retaining wall 11, and the distance from the reflective sheet 70 to the first retaining wall 11 is greater than the distance from the third optical film 90 to the first retaining wall 11. The distances from the second retaining wall 12 to the reflective sheet 70 and/or the light guide plate 80 may be, but not limited to, equal, or a distance greater than zero. A portion of the third optical film 90 is located above the second barrier 12 and does not completely cover the second barrier 12. It is understood that the distances from the first optical film 40, the second optical film 50 and the third optical film 90 to the bezel 20 on the side close to the second barrier wall 12 may be, but not limited to, equal or the same.
The first optical film 40 is a polarizing type brightness enhancement film, which is mainly made of polycarbonate, which is a tough thermoplastic resin, and the first optical film 40 mainly expands and extends toward the first retaining wall 11 with the increase of the internal temperature of the backlight module, and the expansion coefficient thereof is about 75 × 10-6/DEG C; the second optical film 50 is a light-intensifying film mainly composed of a polyester resin, which is the most predominant species among thermoplastic polyesters, and has an expansion coefficient of about 35 × 10-6/The temperature of the second optical film 50 is mainly reduced toward the second retaining wall 12 along with the increase of the internal temperature of the backlight module; the third optical film 90 is a diffusion membrane. Like this, the first optical film 40 and the second optical film 50 are heated to a variable amount and are concentrated on one side of the light bar 60, and excessive expansion/contraction space does not need to be reserved on the opposite side of the light bar 60, which is beneficial to realizing the reliability of fixing corresponding optical films in the vehicle-mounted backlight module and the narrow frame of the backlight module.
In one embodiment, the light bar 60 may include, but is not limited to, a flexible circuit board 140 and an LED lamp 61 electrically connected to a flexible circuit substrate 62, wherein the LED lamp 61 is located on one side of the flexible circuit substrate 62, and a heat conducting glue 63 is adhered to the other side of the flexible circuit substrate 62 and fixed to the inner side of the first retaining wall 11; and a heat conducting glue 63 is still arranged between the other side of the flexible circuit substrate 62 and the supporting surface 13 to accelerate the heat dissipation of the light bar 60 to the bottom plate.
As shown in fig. 4, in one embodiment, the present application provides a liquid crystal display device, which includes the backlight module and the liquid crystal panel 100 in any of the above embodiments; the liquid crystal panel 100 is mounted or fixed on the back or reverse side of the laminating side 21 of the adhesive frame 20 by a transparent adhesive 130. It is understood that the liquid crystal panel 100 includes a driving IC101 disposed thereon.
The liquid crystal display device may further include a flexible circuit board 140; the flexible circuit board 140 is connected to the driving IC101 of the liquid crystal panel 100 by adhesive glue or thermal compression, and the flexible circuit board 140 is wound to the other side of the back plate 10 by a groove disposed on the glue frame 20 and receives an external signal. Wherein, the outer connecting surface of the first retaining wall 11 and/or the second retaining wall 12 and the bottom of the back plate 10 is arc-shaped or circular arc-shaped.
In one embodiment, the liquid crystal display device may further include an upper polarizer 110 and a lower polarizer 120 disposed at both sides of the liquid crystal panel 100; the lower polarizer 120 is located between the transparent adhesive 130 and the liquid crystal panel 100, and is bonded to a portion of the transparent adhesive 130.
It can be understood that, in the backlight module and the liquid crystal display device provided by the present application, in the Z-axis direction, the first optical film 40 is attached and fixed on the adhesive frame 20 or the boss 22 through the double-sided adhesive tape, so that the first optical film 40 can be prevented from being displaced during vibration; simultaneously, the optical film that corresponds can be at lamp strip 60 side free breathing, and when can preventing high low temperature circulation, the unable breathing of optical film leads to the fold, influences optical effect. The second optical film 50 is fixed on the side of the light bar 60 by adopting black single-sided adhesive and is synchronously attached to the upper end face and part or all of the side faces of the first retaining wall 11 in a reverse mode, so that the effect of fixing the second optical film 50 can be achieved, the effect of shielding a light source can be achieved, and the effect of preventing bright spots can be achieved; and then under the prerequisite of guaranteeing on-vehicle backlight unit's high reliability requirement, solved narrow frame type backlight unit and can't reserve the problem of expansion gap and narrow frame bright border at the length direction one side that corresponds the blooming because of the frame is narrower.
It should be noted that the backlight module and the liquid crystal display device provided by the present application can be applied to the technical field of vehicle-mounted display and/or the technical field of narrow-frame display, and can also be applied to the technical field of polysilicon liquid crystal display, in particular to the technical field of LTPS (Low Temperature polysilicon) liquid crystal display.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The backlight module provided by the embodiment of the present application is introduced in detail, and a specific example is applied to explain the principle and the implementation manner of the present application, and the description of the embodiment is only used to help understanding the technical scheme and the core idea of the present application; 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 disclosure as defined by the appended claims.
Claims (16)
1. A backlight module, comprising:
the back plate is at least provided with a first retaining wall and a second retaining wall which are arranged on opposite sides;
the lamp strip is arranged on the inner side surface of the first retaining wall;
the light incident surface of the first optical film faces the supporting surface of the back plate; and
the laminating surface of the rubber frame faces the light emitting surface of the first optical film;
and the pressing surface is adhered with the light emitting surface of the first optical film through an adhesive layer on one side close to the second retaining wall.
2. The backlight module as claimed in claim 1, wherein the pressing surface has a projection, and the projection is adhered to the light-emitting surface of the first optical film via the adhesive layer; and the boss covers at least part of the press-fit surface.
3. The backlight module as claimed in claim 2, wherein the protrusion is located on the pressing surface in the length direction and located in a middle region of the pressing surface.
4. The backlight module of claim 1, wherein the adhesive layer has an interference with the first optical film.
5. The backlight module according to claim 4, wherein the interference is 0.08mm to 0.12 mm.
6. The backlight module according to claim 2, wherein the boss is a rectangular parallelepiped, the length of the boss is 20mm to 30mm, the width of the boss is 2mm to 3mm, and the height of the boss is 0.1mm to 0.5 mm.
7. The backlight module of claim 2, wherein the adhesive layer has a thickness of a distance between the boss and the first optical film.
8. The backlight module according to claim 1, further comprising a second optical film and a light-shielding elastic fixing member;
the light incident surface of the second optical film is far away from the light incident surface of the first optical film, and the light emergent surface of the second optical film faces the light incident surface of the first optical film;
one end of the shading elastic fixing piece is connected with the first retaining wall, the other end of the shading elastic fixing piece is connected with the light-emitting surface of the second optical film, and the shading elastic fixing piece is positioned between the light-in surface of the first optical film and the light-emitting surface of the second optical film;
the shading elastic fixing piece at least partially shades the light bar.
9. The backlight module as claimed in claim 8, wherein the light-shielding elastic fixing member is a black single-sided adhesive.
10. A backlight module according to claim 9, wherein the length of the single-sided adhesive is 20mm to 30mm, and the width of the single-sided adhesive is 5mm to 10 mm.
11. The backlight module according to any one of claims 1 to 10, wherein the second retaining wall at least partially overlaps the first optical film.
12. The backlight module according to any one of claims 8 to 10, wherein the distance from the first optical film to the first retaining wall is greater than the distance from the second optical film to the first retaining wall.
13. The backlight module as claimed in claim 12, wherein the distance from the first optical film to the second retaining wall is equal to the distance from the second optical film to the second retaining wall.
14. The backlight module according to any one of claims 1 to 10, wherein the adhesive layer is a double-sided adhesive tape.
15. A liquid crystal display device, comprising:
a backlight module according to any one of claims 1 to 14; and
and the liquid crystal screen is arranged on the back surface of the laminating surface.
16. The liquid crystal display device according to claim 15, further comprising a flexible circuit board; the flexible circuit board is connected with the liquid crystal display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202022275967.4U CN212781605U (en) | 2020-10-13 | 2020-10-13 | Backlight module and liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022275967.4U CN212781605U (en) | 2020-10-13 | 2020-10-13 | Backlight module and liquid crystal display device |
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| CN212781605U true CN212781605U (en) | 2021-03-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077705A1 (en) * | 2020-10-13 | 2022-04-21 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077705A1 (en) * | 2020-10-13 | 2022-04-21 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| US11852862B2 (en) | 2020-10-13 | 2023-12-26 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Backlight module including interference fit and liquid crystal display device including the same |
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