CN111880330A

CN111880330A - Liquid crystal module and display device

Info

Publication number: CN111880330A
Application number: CN202010728733.2A
Authority: CN
Inventors: 艾琪; 李广超; 吴哲
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-11-03

Abstract

The invention discloses a liquid crystal module and a display device, wherein the liquid crystal module comprises a back plate, a middle frame arranged on the back plate and liquid crystal glass arranged on the middle frame, a first magnetic strip is arranged on one side, facing the middle frame, of the liquid crystal glass, a second magnetic strip is arranged on one side, facing the liquid crystal glass, of the middle frame, and the first magnetic strip and the second magnetic strip are correspondingly arranged and mutually adsorbed. According to the invention, the liquid crystal glass and the middle frame are assembled by the mutual adsorption of the first magnetic strip and the second magnetic strip, the liquid crystal glass and the middle frame can be combined more tightly by the magnetic attraction mode, the liquid crystal glass and the middle frame cannot be fatigue-weakened along with time, the liquid crystal glass and the middle frame can be quickly attracted again after being separated by an external force, the liquid crystal glass and the middle frame are simpler, cleaner and free of residual glue for rework, the liquid crystal module cannot be damaged, and the product quality is improved.

Description

Liquid crystal module and display device

Technical Field

The invention relates to the technical field of display, in particular to a liquid crystal module and a display device.

Background

At present, the full-screen frameless television is realized by sticking the liquid crystal glass on the middle frame, and the mode does not need to additionally add a surface frame to cover the liquid crystal glass, so that the edge of the liquid crystal glass can be seen visually, and the full-screen frameless television is defined as a modern frameless television. The television adopts the double-sided adhesive foam cotton pad as an adhesive material to fix the liquid crystal glass and the middle frame, the specification of the television is generally 2-3 mm in width and 1mm in thickness, the upper surface and the lower surface of the television are coated with colloidal substances similar to double-sided adhesive, and the middle layer is a double-sided adhesive foam buffer layer.

The mode of sticking the liquid crystal glass and the middle frame by adopting the double-sided rubber foam cotton pad has certain defects: (1) the middle layer (the double-sided adhesive tape foam cushion layer) is easy to tear and crack by external force, the middle layer can be easily scratched by using a flaky object at ordinary times, and the product quality is relatively influenced for consumers; (2) the double-sided rubber foam cotton pad reduces viscosity along with the increase of time, so that glass is tilted, impurity and dust enter the display device mistakenly, and the visual effect is influenced; (3) reworking is difficult, if the display module is required to be disassembled due to abnormal quality, the double-sided rubber foam cotton pad needs to be disassembled destructively, the residual rubber is very difficult to remove on the liquid crystal glass, the residual rubber can be rubbed a little by little manually, and the liquid crystal glass can be broken by carelessness; (4) due to the limitation of the thickness and the viscosity of the double-sided rubber foam cotton pad, when the liquid crystal glass is pasted, the liquid crystal glass is not ideal, firm and stable, obvious sinking can be seen by pressing with hands, and the gap between the liquid crystal glass and the edge of the back plate is also larger.

Disclosure of Invention

The invention mainly aims to provide a liquid crystal module and a display device, and aims to solve the problems that reworking is difficult and product quality is influenced when liquid crystal glass and a middle frame are directly bonded by a double-faced rubber foam cotton pad in the existing liquid crystal module.

In order to achieve the above purpose, the liquid crystal module provided by the invention comprises a back plate, a middle frame mounted on the back plate, and liquid crystal glass mounted on the middle frame, wherein a first magnetic stripe is arranged on one side of the liquid crystal glass facing the middle frame, a second magnetic stripe is arranged on one side of the middle frame facing the liquid crystal glass, and the first magnetic stripe and the second magnetic stripe are correspondingly arranged and mutually adsorbed.

Preferably, a demagnetization-preventing buffer strip is arranged between the first magnetic strip and the second magnetic strip, a groove is formed in one side, facing the second magnetic strip, of the demagnetization-preventing buffer strip, and the second magnetic strip is attached to the groove.

Preferably, a first magnetic field is formed after the first magnetic strip and the second magnetic strip are electrified, a magnetic induction coil is arranged on one side, facing the back plate, of the middle frame, and a second magnetic field opposite to the first magnetic field is formed after the magnetic induction coil is electrified.

Preferably, the number of the magnetic induction coils is multiple, and the multiple magnetic induction coils are arranged at intervals along the edge of the middle frame.

Preferably, the first magnetic strip and the second magnetic strip are both frame-shaped structures matched with the shape of the middle frame.

Preferably, the first magnetic strip is adhered to the liquid crystal glass, and the second magnetic strip is adhered to the middle frame.

Preferably, the backplate includes the bottom plate and encloses to be located the curb plate of bottom plate periphery, the periphery of center with the curb plate butt, still be provided with the support on the bottom plate, just the support hug closely in the curb plate, the support deviates from one side of bottom plate is provided with the arch, the center orientation one side of bottom plate be provided with the draw-in groove of protruding block.

Preferably, the liquid crystal module further comprises a light guide plate and an optical film, wherein the light guide plate and the optical film are both arranged on the bottom plate, and the optical film is arranged on one side of the light guide plate, which is deviated from the bottom plate.

Preferably, the liquid crystal module further comprises a limit baffle, the limit baffle is vertically arranged on the bottom plate, and the limit baffle is located between the light guide plate and the support.

Furthermore, the invention also provides a display device which comprises the liquid crystal module.

According to the technical scheme, the first magnetic strip is arranged below the liquid crystal glass, the second magnetic strip is arranged above the middle frame, the magnetic pole of the surface, facing the second magnetic strip, of the first magnetic strip is a first magnetic pole, the magnetic pole of the surface, facing the first magnetic strip, of the second magnetic strip is a second magnetic pole, and the first magnetic pole and the second magnetic pole are different. Because the magnetic pole polarity of first magnetic stripe and second magnetic stripe is different, when placing liquid crystal glazing on the center like this, can directly adsorb together to realize the equipment of liquid crystal glazing and center. According to the invention, the liquid crystal glass and the middle frame are combined more tightly by adopting a magnetic suction mode, fatigue weakening along with time is avoided, the liquid crystal glass and the middle frame can be quickly sucked again after being separated by external force, and the liquid crystal glass is simpler, cleaner and free of adhesive residue for rework; in addition, first magnetic stripe can directly part with the second magnetic stripe, can not break liquid crystal glazing to when first magnetic stripe and second magnetic stripe adsorb, can not bring into burr or dust simultaneously and get into this liquid crystal module, and then improved product quality.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded view of a viewing angle of a liquid crystal module according to the present invention;

FIG. 2 is a bottom cross-sectional view of a liquid crystal module according to the present invention;

FIG. 3 is an exploded view of another viewing angle of the liquid crystal module of the present invention;

FIG. 4 is a schematic view of a partial structure of a liquid crystal module according to the present invention;

fig. 5 is a partially enlarged view of the area a in fig. 4.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Back plate	40	Demagnetization-proof buffer strip
11	Base plate	41	Groove
				12	Side plate	50	Support frame
20	Middle frame	51	Projection
				21	Second magnetic stripe	60	Light guide plate
22	Clamping groove	70	Optical film
				30	Liquid crystal glass	80	Limit baffle
31	First magnetic stripe	90	Magnetic induction coil

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, the present invention provides a liquid crystal module, which includes a back plate 10, a middle frame 20 mounted on the back plate 10, and a liquid crystal glass 30 mounted on the middle frame 20, wherein a first magnetic stripe 31 is disposed on a side of the liquid crystal glass 30 facing the middle frame 20, a second magnetic stripe 21 is disposed on a side of the middle frame 20 facing the liquid crystal glass 30, and the first magnetic stripe 31 and the second magnetic stripe 21 are disposed correspondingly and mutually adsorbed. In this embodiment, a first magnetic stripe 31 is disposed below the liquid crystal glass 30, a second magnetic stripe 21 is disposed above the middle frame 20, a magnetic pole of a side of the first magnetic stripe 31 facing the second magnetic stripe 21 is a first magnetic pole, a magnetic pole of a side of the second magnetic stripe 21 facing the first magnetic stripe 31 is a second magnetic pole, and the first magnetic pole is different from the second magnetic pole. Due to the fact that the magnetic poles of the first magnetic strip 31 and the second magnetic strip 21 are different in polarity, when the liquid crystal glass 30 is placed on the middle frame 20, the liquid crystal glass 30 can be directly adsorbed together, and therefore the liquid crystal glass 30 and the middle frame 20 can be assembled. In the invention, the liquid crystal glass 30 and the middle frame 20 are combined more tightly by adopting a magnetic suction mode, fatigue weakening along with time is avoided, the liquid crystal glass can be quickly sucked again after being separated by external force, and the liquid crystal glass is simpler and cleaner without adhesive residue for rework; in addition, first magnetic stripe 31 can directly part with second magnetic stripe 21, can not break liquid crystal glazing 30 to when first magnetic stripe 31 and second magnetic stripe 21 adsorb, can not bring into simultaneously burr or dust and get into this liquid crystal module, and then improved product quality. In other embodiments, the middle frame 20 may be directly thermoformed from a soft magnetic material without the need for later application of the second magnetic strip 21.

As shown in fig. 1 and fig. 2, a demagnetization-preventing buffer strip 40 is disposed between the first magnetic stripe 31 and the second magnetic stripe 21, a groove 41 is disposed on one side of the demagnetization-preventing buffer strip 40 facing the second magnetic stripe 21, and the second magnetic stripe 21 is attached in the groove 41. In a preferred embodiment, the demagnetization-preventing buffer strip 40 is filled between the first magnetic strip 31 and the second magnetic strip 21, so that the phenomena of mutual friction and powder falling or demagnetization of the first magnetic strip 31 and the second magnetic strip 21 are prevented, and meanwhile, the demagnetization-preventing buffer strip 40 can also play a certain protection role on the liquid crystal glass 30. The demagnetization-preventing buffer strip 40 may preferably be buffer foam.

The first magnetic field (e.g. downward magnetic field as shown in fig. 2) is formed by the first magnetic stripe 31 and the second magnetic stripe 21 when the power is supplied, the magnetic induction coil 90 is disposed on the side of the middle frame 20 facing the back plate 10, and the second magnetic field (e.g. upward magnetic field as shown in fig. 2) opposite to the first magnetic field is formed by the magnetic induction coil 90 when the power is supplied. The number of the magnetic induction coils 90 is plural, and the plural magnetic induction coils 90 are arranged at regular intervals along the extending direction of the middle frame 20. In the preferred embodiment, although the liquid crystal glass 30 and the middle frame 20 are magnetically attached, when the display module is completely disassembled, it is easy to take full consideration, for example, in general, when disassembling, the previous area is disassembled and separated first, and then the next area is disassembled, and at this time, the previous area needs to be prevented from being magnetically attached again. In assembly, if the glass and the center frame 20 are misaligned, they are attached, and then separated and reattached is troublesome. Therefore, as shown in fig. 3 to 5, the magnetic induction coils 90 are arranged at regular intervals on the side of the middle frame 20 facing the back plate 10, and the distance may be determined according to the model size; the magnetic induction coil 90 functions as: when the liquid crystal glass 30 is not electrified, the liquid crystal glass does not work, when the liquid crystal glass is electrified, a second magnetic field is generated, the direction of the magnetic field of the second magnetic field is opposite to that of the first magnetic field between the first magnetic strip 31 and the second magnetic strip 21, and the two magnetic fields can be approximately mutually offset by adjusting the current, so that the liquid crystal glass 30 and the middle frame 20 can be more easily separated. In addition, because the liquid crystal glass 30 and the middle frame 20 can be separated only by electrifying the magnetic induction coil 90, the first magnetic field is not reinforced by the magnetic induction coil 90, and therefore, the effects of more reliability and elimination of potential power failure are achieved.

The first magnetic stripe 31 and the second magnetic stripe 21 are both frame-shaped structures matching with the shape of the middle frame 20. The first magnetic stripe 31 is adhered to the liquid crystal glass 30, and the second magnetic stripe 21 is adhered to the middle frame 20. Preferably, the first magnetic stripe 31 and the liquid crystal glass 30 can be permanently fixed together by strong glue; the second magnetic stripe 21 and the middle frame 20 can be fixed together by glue or thermoplastic molding.

As shown in fig. 2, the back plate 10 includes a bottom plate 11 and a side plate 12 surrounding the bottom plate 11, the periphery of the middle frame 20 abuts against the side plate 12, a bracket 50 is further disposed on the bottom plate 11, the bracket 50 is tightly attached to the side plate 12, a protrusion 51 is disposed on one side of the bracket 50 away from the bottom plate 11, and a slot 22 engaged with the protrusion 51 is disposed on one side of the middle frame 20 facing the bottom plate 11. In a preferred embodiment, a side plate 12 perpendicular to the bottom plate 11 is disposed around the periphery of the bottom plate 11, a bracket 50 is disposed on the bottom plate 11, and the bracket 50 extends along the periphery of the bottom plate 11. Be provided with arch 51 at the one side that support 50 deviates from bottom plate 11, be provided with draw-in groove 22 on center 20, when center 20 and backplate 10 installation, draw-in groove 22 on center 20 directly the joint on arch 51 to make center 20 install on support 50 on bottom plate 11, this support 50 can avoid center 20 direct and bottom plate 11 contact and damage bottom plate 11. The side plates 12 provided around the outer periphery of the middle frame 20 can function to include the middle frame 20, thereby preventing the middle frame 20 from being damaged. In other embodiments, in addition to the middle frame 20 being snapped onto the bracket 50, the middle frame 20 may be screwed onto the bracket 50 to further strengthen the connection between the bracket 50 and the middle frame 20.

As shown in fig. 1, the liquid crystal module further includes a light guide plate 60 and an optical film 70, wherein the light guide plate 60 and the optical film 70 are both disposed on the bottom plate 11, and the optical film 70 is disposed on a side of the light guide plate 60 away from the bottom plate 11. The liquid crystal module further includes a limiting baffle 80, the limiting baffle 80 is vertically disposed on the bottom plate 11, and the limiting baffle 80 is located between the light guide plate 60 and the bracket 50. In a preferred embodiment, the optical film 70 is adhered to the light guide plate 60, and then the light guide plate 60 with the optical film 70 mounted thereon is mounted on the bottom plate 11 with a space between the light guide plate 60 and the bracket 50, and in order to define the position of the light guide plate 60 and prevent the light guide plate 60 from moving, a limit baffle 80 is disposed between the light guide plate 60 and the bracket 50, and the limit baffle 80 is disposed near one side of the light guide plate 60. The position-limiting baffle 80 in this embodiment is used to limit the position of the light guide plate 60, and prevent the position of the light guide plate 60 from being changed during the assembly process, which affects the performance of the entire display device.

In addition, the invention also provides a display device which can be a display device such as a television, a display, an advertising machine and the like, and the display device comprises the liquid crystal module. Since the display device adopts all the technical solutions of the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a liquid crystal module, its characterized in that, liquid crystal module includes the backplate, installs center on the backplate and install liquid crystal glazing on the center, liquid crystal glazing orientation one side of center is provided with first magnetic stripe, the center orientation one side of liquid crystal glazing is provided with the second magnetic stripe, first magnetic stripe with the second magnetic stripe corresponds the setting and adsorbs each other.

2. The liquid crystal module according to claim 1, wherein a demagnetization-preventing buffer strip is arranged between the first magnetic strip and the second magnetic strip, a groove is arranged on one side of the demagnetization-preventing buffer strip facing the second magnetic strip, and the second magnetic strip is attached in the groove.

3. The liquid crystal module as claimed in claim 1, wherein a first magnetic field is formed when the first magnetic strip and the second magnetic strip are energized, a magnetic induction coil is disposed on a side of the middle frame facing the back plate, and a second magnetic field opposite to the first magnetic field is formed when the magnetic induction coil is energized.

4. The liquid crystal module as claimed in claim 3, wherein the number of the magnetic coils is plural, and the plural magnetic coils are arranged at intervals along the edge of the middle frame.

5. The liquid crystal module of any of claims 1-4, wherein the first and second magnetic strips are frame-like structures matching the shape of the middle frame.

6. The liquid crystal module of any one of claims 1 to 4, wherein the first magnetic strip is bonded to the liquid crystal glass and the second magnetic strip is bonded to the bezel.

7. The liquid crystal module according to any one of claims 1 to 4, wherein the back plate comprises a bottom plate and a side plate surrounding the periphery of the bottom plate, the periphery of the middle frame abuts against the side plate, a support is further arranged on the bottom plate and clings to the side plate, a protrusion is arranged on one side of the support, which is far away from the bottom plate, and a clamping groove clamped with the protrusion is arranged on one side of the middle frame, which faces the bottom plate.

8. The liquid crystal module of claim 7, further comprising a light guide plate and an optical film, wherein the light guide plate and the optical film are disposed on the bottom plate, and the optical film is disposed on a side of the light guide plate facing away from the bottom plate.

9. The liquid crystal module of claim 7, further comprising a position limiting baffle, wherein the position limiting baffle is vertically disposed on the bottom plate, and the position limiting baffle is located between the light guide plate and the bracket.

10. A display device comprising the liquid crystal module according to any one of claims 1 to 9.