CN108828819B

CN108828819B - Display module and display device

Info

Publication number: CN108828819B
Application number: CN201810680470.5A
Authority: CN
Inventors: 艾祖东; 艾琪; 李清; 陈军; 李广超; 孟幻
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2018-06-27
Filing date: 2018-06-27
Publication date: 2021-08-31
Anticipated expiration: 2038-06-27
Also published as: CN108828819A

Abstract

The invention discloses a display module and display equipment, and relates to the technical field of display equipment. The display module comprises a backlight module, a decorative plate and a control plate, wherein the backlight module comprises a back plate, and the back plate comprises a plate body and an extending part formed by extending the lower end of the plate body; the decorative plate is buckled on the front surface of the extension part and forms an installation space with the extension part; the control panel is installed in the installation space. Among this display module assembly, extension and the decorative board that form through the backplate extension form the installation space who holds the control panel, with the control panel remove to the installation space of backlight unit lower extreme in by the back of backplate among the prior art, guarantee that display module assembly thickness is unanimous from top to bottom, and reduced the holistic thickness of display module assembly. In addition, because the control panel sets up in installation space, need not be provided with the shell outside the backplate, can reduce display module's part number, be favorable to control cost.

Description

Display module and display device

Technical Field

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

Background

A display device is a device that can output graphic or tactile information, and includes a television, a display, an advertisement machine, and the like. The display module is one of the important components of the display device. The display module comprises a backlight module and a display panel, wherein the backlight module can be divided into a side-in type backlight module and a direct type backlight module.

At present, in a television adopting a side-in type backlight module, the whole upper part is thin, and the lower part is thick, and the reasons mainly include the following points:

1. control panels such as a power panel, a logic panel and a constant current board in the whole machine are all arranged at the lower part of the back surface of a back plate in the backlight module, and the control panels are shielded by arranging a rear shell, so that the thickness of the whole machine is increased;

2. if the television is a split television, the thickness of the heat dissipation strip is generally 5-8mm because the thicker aluminum profile heat dissipation strip is arranged at the lamp strip, so that the thickness of the lower part of the whole television is increased;

3. a power panel and a Chip On Film (COF) PCB On liquid crystal glass are generally arranged by being turned over from the front side to the back side of the whole machine, and a logic board (TCON) is placed On a back plate, thereby increasing the thickness of the lower part of the whole machine.

The television is thin on the top and thick on the bottom, the whole appearance is not attractive, and particularly after the television is hung on a background wall, a large gap exists between the upper part of the whole television and the background wall, so that the television has weaker competitiveness compared with a product of an Organic Light-Emitting Diode (OLED) technology.

Disclosure of Invention

One objective of the present invention is to provide a display module with a uniform and thin overall thickness.

In order to achieve the purpose, the invention adopts the following technical scheme:

a display module, comprising:

the backlight module comprises a back plate, wherein the back plate comprises a plate body and an extending part formed by extending the lower end of the plate body;

the decorative plate is buckled on the front surface of the extension part and forms an installation space with the extension part; and

a control panel installed in the installation space.

Wherein, the display module assembly still includes:

the display panel is stacked on the backlight module, and the outer surface of the display panel is flush with the outer surface of the decorative plate.

The edge of the back of the display panel is fixedly bonded on the backlight module through glue.

Wherein, a bracket is arranged at the joint of the plate body and the extending part;

the backlight module further comprises:

the light guide plate is stacked on the plate body; and

and the light bar is arranged on the support and is opposite to the side face of the light guide plate.

The lamp strip clamping device comprises a support, a lamp strip and a connector, wherein the support is provided with a clamping hole, the lamp strip is convexly provided with the connector, and the connector is clamped into the clamping hole and is electrically connected with a control panel.

The light guide plate is characterized in that a hanging lug is arranged on the plate body in a protruding mode, a clamping hole is formed in the light guide plate, and the hanging lug is clamped into the clamping hole.

The back plate is bent to form a U-shaped structure, the U-shaped structure forms the support, and reinforcing ribs are arranged in the U-shaped structure.

The control panel comprises a constant current plate, a signal conversion plate, a logic plate and a display panel PCB, and the display panel PCB extends into the installation space from the lower end of the back of the display panel.

Another object of the present invention is to provide a display device with a uniform and thin overall thickness.

a display device comprises a display screen, wherein the display screen comprises the display module.

The display equipment further comprises a sound box and a mainframe box, the display screen is arranged in a split mode, the sound box is wirelessly connected with the control panel, and the control panel is connected with the mainframe box through a wire.

Has the advantages that: the invention provides a display module and display equipment, wherein an installation space for accommodating a control panel is formed by an extension part formed by extending a back plate and a decorative plate, the control panel is moved into the installation space at the lower end of a backlight module from the back of the back plate in the prior art, the up-and-down thickness of the display module is ensured to be consistent, and the overall thickness of the display module is reduced. In addition, because the control panel sets up in installation space, need not be provided with the shell outside the backplate, can reduce display module's part number, be favorable to control cost.

Drawings

Fig. 1 is a front view of a display device provided by the present invention;

FIG. 2 is a schematic structural diagram of a display device provided in the present invention;

FIG. 3 is a schematic structural view of the display device provided by the present invention without a decorative panel installed;

fig. 4 is an exploded view of a display device provided by the present invention;

FIG. 5 is an exploded view of the back panel and light bar provided by the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

FIG. 7 is a cross-sectional view of a back panel and light bar provided by the present invention;

fig. 8 is a partial enlarged view at B in fig. 7.

Wherein:

100. a display screen; 200. a main chassis; 300. a sound box;

1. a display panel; 2. a backlight module; 21. a back plate; 211. a plate body; 212. an extension portion; 213. a support; 2131. a clamping hole; 2132. reinforcing ribs; 214. hanging a lug; 22. a light bar; 221. a connector; 23. a reflective sheet; 24. a light guide plate; 25. an optical film; 26. a middle frame; 3. a decorative plate; 4. a wire assembly; 41. a wire; 42. a protective sleeve; 5. a control panel; 51. a display panel PCB; 52. a signal conversion board; 53. a logic board; 54. a constant flow plate.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

The embodiment provides a display device which can be a television, a computer, an advertising machine and the like. In this embodiment, a television is taken as an example for description.

As shown in fig. 1, the television includes a display screen 100, a speaker 300, and a main cabinet 200, wherein the display screen 100, the speaker 300, and the main cabinet 200 are separately disposed, and a main board and a power board are disposed in the main cabinet 200. The display screen 100 includes a display module. The main board and the power board are electrically connected with the control board 5 in the display screen 100 through the wires 41 so as to transmit signals and control the operation of the display module.

In order to solve the problem of inconsistent vertical thickness of the whole television in the prior art, in this embodiment, as shown in fig. 2, the display module includes a backlight module 2, a display panel 1 and a decorative plate 3, and the display panel 1 is stacked on the backlight module 2. The backlight module 2 includes a back plate 21, and a back surface of the back plate 21 is a plane and can be used as a housing of the display screen 100. The upper and lower thickness of display module assembly is unanimous and thinner, and the complete machine is made the nature more pleasing to the eye, is favorable to improving user's use and experiences.

Specifically, as shown in fig. 3 and 4, the back plate 21 includes a plate body 211 and an extension portion 212 formed by extending a lower end of the plate body 211. The shape and size of the plate body 211 are matched with the display panel 1, the decorative plate 3 is buckled on the extending part 212 and forms an installation space with the extending part 212, and the control panel 5 in the display module is installed in the installation space. In this display module assembly, through with control panel 5 in the installation space of removing to the display module assembly lower extreme by the back of backplate 21 among the prior art, guarantee that display module assembly thickness is unanimous from top to bottom, and reduced the holistic thickness of display module assembly. In addition, because the control panel 5 sets up in installation space, the backplate 21 need not be provided with the shell outward, can reduce display module's part number, is favorable to control cost.

As shown in fig. 4, the backlight module 2 includes a light bar 22, a back plate 21, and a reflector 23, a light guide plate 24, an optical film 25 and a middle frame 26 stacked on a plate body 211 of the back plate 21 in sequence, wherein the middle frame 26 is a rectangular frame structure and fixed to an edge of the back plate 21, so as to clamp and fix the reflector 23, the light guide plate 24 and the optical film 25. In this embodiment, the backlight module 2 is a side-in type backlight module 2, and the light bar 22 is disposed on the back plate 21 and opposite to a side surface of the light guide plate 24, which is a light incident surface of the light guide plate 24. The shapes and sizes of the reflective sheet 23, the light guide plate 24, the optical film 25 and the display panel 1 are adapted to the shapes and sizes of the plate 211. The decorative plate 3 is matched with the extension part 212 in shape and size, and the control plate 5 is placed in the installation space inside the decorative plate 3 and the extension part 212 after the decorative plate 3 is buckled.

All the other control panels except the light bar PCB in the display module can be arranged in the installation space, so that the thickness of the display module is reduced. In this embodiment, the control board 5 includes a constant current board 54, a signal conversion board 52, a logic board 53, and a display panel PCB 51. The constant current board 54, the signal conversion board 52 and the logic board 53 may be fixed on the extension portion 212, and the display panel PCB51 may extend downward into the installation space from the lower end of the back of the display panel 1, that is, the display panel PCB51 may be vertically disposed, which is beneficial to reducing the thickness of the display module.

In order to reduce the width of the installation space in the vertical direction, thereby narrowing the width of the decorative panel 3, the constant current plate 54, the signal conversion plate 52, and the logic plate 53 may be arranged in the horizontal direction, i.e., in the length direction of the decorative panel 3, thereby reducing the width of the decorative panel 3, making the display apparatus more aesthetic.

Further, the display panel PCB51 may include a vertically extending section and a horizontally extending section, one end of the vertically extending section being connected with the rear surface of the display panel 1, and the other end being connected with the horizontally extending section. The length of the vertical extension section only needs to ensure that the horizontal section can extend into the mounting hole piece, thereby further reducing the width of the decorative plate 3.

In order to facilitate the signal transmission between the control board 5 and the main chassis 200, the display module further includes a wire assembly 4, one end of the wire assembly 4 is connected with the control board 5, and the other end of the wire assembly extends out of the installation space and is connected with the main chassis 200. Specifically, the wire assembly 4 includes a wire 41 and a protective sleeve 42, wherein the protective sleeve 42 is sleeved outside the wire 41 to prevent the wire 41 from being worn. A through hole is arranged on the side wall of the installation space formed by the decorative plate 3 and the extension part 212, and the protective sleeve 42 passes through the through hole and extends out of the display module. The decorative board 3 can be provided with a plurality of through holes, which is beneficial to the heat dissipation of the control board 5 in the installation space.

In the present embodiment, the wires 41 include HDMI signal lines and power signal lines, the HDMI signal lines are connected to the signal conversion board 52, the power signal lines are connected to the constant current board 54, and the constant current board 54, the conversion board, and the display panel PCB51 are all communicated with the logic board 53. After the tv main chassis 200 is powered on, when the main chassis 200 receives a signal source, the main board in the main chassis 200 converts the signal into an HDMI signal, and the power board outputs a power signal. The HDMI signal is transmitted to the signal conversion board 52 through an HDMI signal line, and the power supply signal is transmitted to the constant current board 54 through a power supply signal line. The signal conversion board 52 converts the HDMI signal into an LVDS signal, and the LVDS signal drives the display panel 1 to operate. Meanwhile, the constant current board 54 drives the light bars 22 in the backlight module 2 to work, so that the display module displays normal pictures.

In this embodiment, the front surface of the middle frame 26 is flat, the display panel 1 is stacked on the middle frame 26, and the edge of the back surface of the display panel 1 is fixed to the middle frame 26 through adhesive bonding, so that the edge of the display panel is prevented from being shielded by the middle frame 26, the display panel 1 is exposed integrally, and wider and larger visual experience is provided for a user. Specifically, the edge of the back surface of the display panel 1 may be attached to the middle frame 26 by foam adhesive. The foam rubber has excellent sealing property, compression deformation resistance, flame retardance, wetting property and the like.

The edge of the middle frame 26 may be bent backward to wrap the bracket, the optical film 25, the light guide plate, and the like, and may be used as an appearance member, and may further fix the optical film 25 and the light guide plate 24. After the display panel 1 is stacked on the backlight module 2, the outer surface of the display panel 1 is flush with the outer surface of the decorative plate 3, so that the attractiveness of the television can be further improved.

As shown in fig. 5, the back plate 21 is provided with a bracket 213 at a connection position of the plate body 211 and the extension portion 212, the bracket 213 is in a long strip shape, and the bracket 213 is used for fixing the light bar 22. Specifically, the light bar 22 is fixed to the bracket 213 by clipping, and is disposed opposite to the side surface of the light guide plate 24. The back plate 21 is provided with a plurality of hanging lugs 214, the light guide plate 24 is correspondingly provided with clamping holes, and the hanging lugs 214 are matched with the clamping holes to fix the light guide plate 24. The reflecting sheet 23 and the optical film 25 may also be provided with a fastening hole at the corresponding position, and the fastening is also realized by the matching of the hanging lug 214 and the fastening hole.

The edge of the back plate 21 is bent to form a hem, and the hem and the bracket 213 cooperate to form a groove for accommodating the reflective sheet 23, the light guide plate 24 and the optical film 25. In order to further improve the fixing effect of the back plate 21 on the reflective sheet 23, the light guide plate 24 and the optical film 25, the bracket 213 and the folded edge may be further coated with glue, and the reflective sheet 23, the light guide plate 24 and the optical film 25 are further fixed on the back plate 21 by the glue. Wherein, the glue can be acrylic AB structure glue.

The middle frame 26 may be fixed to the back plate 21 by glue or may be fixed to the back plate 21 by screws. Specifically, the bracket 213 of the back plate 21 may be provided with a threaded hole, and a screw is inserted through the middle frame 26 and then engaged with the threaded hole, so as to fix the middle frame 26 to the back plate 21. In order to improve the stability of fixing the middle frame 26, the hanging lugs 214 can also be provided with threaded holes, so that the four sides of the middle frame 26 are fixed with the back plate 21, and the fixing effect is good.

In this embodiment, the side of the light guide plate 24 can abut on the light bar 22, and the light bar 22 and the back plate 21 can support the light guide plate 24 together, so as to improve the strength of the display module. Because the number of parts borne by the back plate 21 is large, when the size of the display module is large, in order to avoid deformation of the back plate 21, a layer of metal plate, glass or acrylic plate can be attached to the outside of the back plate 21 to serve as an auxiliary support, and the strength of the back plate 21 is improved.

The back of the back plate 21 is a plane, and a specific decorative film or a customized pattern with commemorative value can be pasted on the back plate 21 according to actual needs, so that the appearance of the television is diversified.

As shown in fig. 6, the light bar 22 includes a substrate, a plurality of LED chips arranged in a longitudinal direction of the substrate, and a connector 221, wherein the connector 221 is electrically connected to the LED chips, and the connector 221 is connected to the control board 5 through a wire 41, so as to control opening and closing of the light bar 22.

In order to fix the light bar 22 and the bracket 213, the bracket 213 is provided with a clipping hole 2131, and the connector 221 on the light bar 22 is matched with the clipping hole 2131 to fix the light bar 22 on the bracket 213.

In order to improve the strength of the bracket 213, the bottom surface of the bracket 213 may be further provided with a reinforcement rib 2132, the reinforcement rib 2132 is disposed along the longitudinal direction of the bracket 213, and the cross-sectional shape of the reinforcement rib 2132 may be triangular, so that the support is more stable.

As shown in fig. 7 and 8, the bracket 213 may be a U-shaped structure formed by bending the back plate 21, and an opening of the U-shaped structure is disposed toward the back surface of the back plate 21. The base area of the air and the back plate 21 can be increased by the support 213 with the U-shaped structure, so that heat generated by the lamp strip 22 is dissipated into the air as soon as possible, and the improvement of the heat dissipation effect of the lamp strip 22 is facilitated. In order to rapidly dissipate the generated heat to the outside of the display module by operating the control panel 5, the back plate 21 may be made of aluminum, the heat-conducting property of aluminum is good, and the control panel 5 is directly contacted with the back plate 21, so that the heat-dissipating efficiency can be accelerated. The back plate 21 may further be provided with a heat dissipation layer, which may further increase the heat dissipation efficiency.

In this embodiment, backplate 21 not only can regard as display module's shell to use, but also can play the effect of heat dissipation aluminium strip, has saved the heat dissipation aluminium strip that supplies lamp strip 22 heat dissipation to use, can reduce display module's thickness, reduces display module's cost.

In order to increase the strength of the bracket 213, a reinforcing rib may be further provided in the opening of the U-shaped structure. To avoid the effect of the ribs blocking the openings of the U-shaped structure and thereby affecting the air flow, the ribs may extend in a zigzag pattern along the length of the bracket 213.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A display module, comprising:

the backlight module (2), the backlight module (2) comprises a back plate (21), a light guide plate (24) and a light bar (22), the back plate (21) comprises a plate body (211) and an extension part (212) formed by extending the lower end of the plate body (211), the joint of the plate body (211) and the extension part (212) is bent to form a U-shaped structure, the U-shaped structure forms a bracket (213), reinforcing ribs are arranged in the U-shaped structure, the bracket (213) is provided with a clamping hole (2131), the lamp strip (22) is convexly provided with a connector (221), the connector (221) is clamped into the clamping hole (2131), the bracket (213) extends along the width direction of the plate body (211), the light guide plate (24) is stacked on the plate body (211), and the lamp strip (22) is mounted on the bracket (213) and is arranged opposite to the side face of the light guide plate (24);

the decorative plate (3) is buckled on the front surface of the extension part (212), and an installation space is formed between the decorative plate (3) and the extension part (212); and

a control board (5), wherein the control board (5) is installed in the installation space and is electrically connected with the connector (221).

2. The display module of claim 1, wherein the display module further comprises:

display panel (1), display panel (1) stack in backlight unit (2) is last, the surface of display panel (1) with the surface parallel and level of decorative board (3).

3. A display module according to claim 2, wherein the edge of the back surface of the display panel (1) is fixed to the backlight module (2) by adhesive bonding.

4. The display module according to claim 1, wherein the plate body (211) is provided with a hanging lug (214) in a protruding manner, the light guide plate (24) is provided with a clamping hole, and the hanging lug (214) is clamped in the clamping hole.

5. The display module according to claim 2, wherein the control board (5) comprises a constant current board (54), a signal conversion board (52), a logic board (53) and a display panel PCB (51), and the display panel PCB (51) extends into the installation space from the lower end of the back of the display panel (1).

6. A display device comprising a display screen (100), characterized in that the display screen (100) comprises a display module according to any one of claims 1-5.

7. The display device according to claim 6, wherein the display device further comprises a sound box (300) and a main cabinet (200), the display screen (100), the sound box (300) and the main cabinet (200) are separately arranged, the sound box (300) is wirelessly connected with the control board (5), and the control board (5) is connected with the main cabinet (200) through a wire (41).