CN210051980U

CN210051980U - Liquid crystal display module capable of resisting signal interference

Info

Publication number: CN210051980U
Application number: CN201920862112.6U
Authority: CN
Inventors: 杜知清; 覃木
Original assignee: SHENZHEN XINTIANYUAN ELECTRONIC CO Ltd
Current assignee: SHENZHEN XINTIANYUAN ELECTRONIC CO Ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-02-11
Anticipated expiration: 2029-06-10

Abstract

The utility model relates to an anti signal interference's LCD screen module, including display module assembly, drive module and PCB mainboard, still including the LCD screen and the board in a poor light that set gradually in the display module assembly, first shielding layer is pasted and is close to at the LCD screen one side of board in a poor light, the board in a poor light is kept away from it has the second shielding layer to paste on one side of LCD screen, drive module installs the LCD screen both ends and with the LCD screen electricity is connected, the PCB mainboard pass through the FPC board with the drive module electricity is connected. The utility model discloses be provided with first shielding layer and second shielding layer on LCD screen and board in a poor light respectively, can shield the electromagnetic interference of outside electromagnetic environment to LCD screen and board in a poor light respectively, improve LCD screen picture display quality, user uses and experiences better.

Description

Liquid crystal display module capable of resisting signal interference

Technical Field

The utility model relates to a liquid crystal display technology field especially relates to an anti signal interference's LCD screen module.

Background

Nowadays, more and more electronic products are used in society, and the user requirements are also improved. The industrial control instrument has higher requirements on the display, the liquid crystal screen is required to work normally in a strong electromagnetic environment, and the phenomenon that the display screen flickers due to electromagnetic interference to influence the use of a user is avoided.

At present, for shielding electromagnetic interference of a liquid crystal display, a wire mesh formed by metal wires is generally attached to one side of the liquid crystal display, so that the bright projection of a backlight source is easily influenced by the latticed wire mesh, the image quality of the liquid crystal display is reduced, and visual interference is easily generated when a user uses the liquid crystal display.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an anti-signal interference's LCD screen module to the condition that the LCD screen receives outside electromagnetic interference easily, can effectively avoid the LCD screen to be disturbed by outside electromagnetic environment, leads to LCD screen image scintillation unstable, influences the user and uses.

The utility model provides an anti signal interference's LCD screen module, includes the display module assembly, drive module and PCB mainboard, still including the LCD screen and the board in a poor light that set gradually in the display module assembly, first shielding layer is pasted and is close to at the LCD screen one side of board in a poor light, the board in a poor light is kept away from it has the second shielding layer to paste on one side of LCD screen, drive module installs the LCD screen both ends and with the LCD screen electricity is connected, the PCB mainboard pass through the FPC board with the drive module electricity is connected.

Preferably, a signal receiving circuit, a signal shaping circuit, a signal output circuit and a driving circuit are integrated on the driving module, one end of the signal receiving circuit is electrically connected with the main board through the FPC board, the other end of the signal receiving circuit is electrically connected with the signal output circuit through the signal shaping circuit, and the other end of the signal output circuit is electrically connected with the driving circuit.

Preferably, the second shielding layer is a metal shielding layer.

Preferably, an anti-oxidation layer is arranged on one side, away from the backlight plate, of the metal shielding layer.

Preferably, the oxidation resistant layer is polyimide.

Preferably, the first shielding layer is connected to the FPC board and grounded.

Preferably, the first shielding layer is graphene.

Preferably, a plurality of light emitting diodes are arranged on one side of the backlight plate, which is far away from the second shielding layer.

The utility model discloses an useful part lies in: 1. the utility model discloses be provided with first shielding layer and second shielding layer respectively on LCD screen and backlight plate, can shield the electromagnetic interference of external electromagnetic environment to LCD screen and backlight plate respectively, improve LCD screen picture display quality, user uses and experiences better; 2. the utility model discloses set up drive module at the LCD screen both ends simultaneously, in order to avoid directly inputting the LCD screen behind the drive module received signal, lead to the LCD screen because the signal is unstable to lead to the picture scintillation, added signal shaping circuit structure in drive module, interference and clutter in can the filtering drive signal avoid the LCD screen because phenomena such as the interference of external signal appears messy sign indicating number or does not show.

Drawings

FIG. 1 is an exploded view of an anti-signal interference LCD panel module according to an embodiment;

FIG. 2 is a circuit diagram of an anti-signal interference LCD module;

FIG. 3 is a schematic cross-sectional view of the LCD panel of FIG. 1;

fig. 4 is a schematic cross-sectional view of the backlight panel of fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, a liquid crystal display module capable of resisting signal interference includes a display module 1, a driving module 2 and a PCB mainboard 3, the display module 1 further includes a liquid crystal display 11 and a backlight plate 12 which are sequentially arranged, the first shielding layer 4 is pasted on one side of the liquid crystal display 11 close to the backlight plate 12, the backlight plate 12 is far away from one side of the liquid crystal display 11, a second shielding layer 5 is pasted on the other side of the liquid crystal display 11, the driving module 2 is installed at two ends of the liquid crystal display 11 and electrically connected with the liquid crystal display 11, and the PCB mainboard 3 is electrically connected with the driving module 2 through an FPC board 6. Specifically, in this embodiment, the first shielding layer 4 and the second shielding layer 5 are respectively disposed on the liquid crystal panel 11 and the backlight panel 12, so as to respectively shield the interference of the outside on the liquid crystal panel 11 and the backlight panel 12. The second shielding layer 5 can shield external electromagnetic interference, and avoid the situation that light emitting components on the backlight plate 12 are unstable in light emitting, which results in flickering of display pictures on the liquid crystal screen 11. The first shielding layer 4 is disposed on one side of the liquid crystal panel 11 close to the backlight panel 12, and can simultaneously shield electromagnetic interference generated by the backlight panel 12 when the backlight panel 12 is powered on, so that liquid crystal molecules on the liquid crystal panel 11 are shifted due to electromagnetic signals emitted by the backlight panel 12, and the image flickers. And the utility model discloses well PCB mainboard 3 passes through FPC 6 electricity connection drive module 2, and FPC board 6 is flexible circuit board, and it is less to occupy the LCD screen inner space, can not influence the whole equipment of LCD screen, and PCB mainboard 3 is connected through FPC 6 and 2 electricity of drive module, with the signal of telecommunication input to LCD screen 11 in, and then control the picture and show.

As shown in fig. 1 to 2, the driver module 2 is integrated with a signal receiving circuit 21, a signal shaping circuit 22, a signal output circuit 23, and a driver circuit 24, wherein one end of the signal receiving circuit 21 is electrically connected to the PCB main board 3 through the FPC board 6, the other end of the signal receiving circuit 21 is electrically connected to the signal output circuit 23 through the signal shaping circuit 22, and the other end of the signal output circuit 23 is electrically connected to the driver circuit 24. Specifically, the signal receiving circuit 21 receives a driving signal sent by the PCB main board 6 and sends the driving signal to the signal shaping circuit 22, and the signal shaping circuit 22 filters and shapes the driving signal to remove interference signals and noise, and then inputs the driving signal into the driving circuit 24 through the signal output circuit 23 to drive the liquid crystal panel 11. The driving module 2 improves the anti-interference capability of the liquid crystal display module, and solves the problem that a display picture is unstable due to the fact that a driving signal of the liquid crystal display 11 is interfered by external electromagnetic waves.

As shown in fig. 1 to 4, the second shielding layer 5 is a metal shielding layer, an anti-oxidation layer 51 is disposed on a side of the metal shielding layer 5 away from the backlight 12, and the anti-oxidation layer 51 is polyimide. Specifically, keep away from 11 a sides of LCD screen at board 12 in a poor light and set up metal shielding layer 5, can shield the interference of outside electromagnetism to the luminous part on board 12 in a poor light, prevent that scintillation phenomenon from appearing in luminous part, metal shielding layer 5 can also act as the radiating part simultaneously, effectively dispels the heat to board 12 in a poor light. In addition, the metal shielding layer 5 is covered with an oxidation resistant layer 51 made of polyimide, which is made of polyimide organic polymer material and can resist high temperature of more than 300 degrees, so that the metal shielding layer 5 is protected, the oxidation of the metal shielding layer is prevented, and moisture and oxygen can be shielded. In addition, ink or the like may be used as the antioxidation layer 51.

As shown in fig. 1, the first shielding layer 4 is connected to the FPC board 6 and grounded, and the first shielding layer 4 is made of graphene. Specifically, after the first shielding layer 4 is connected with the ground through the FPC board 6, an electrostatic protection layer is formed, the liquid crystal screen 11 is prevented from being interfered by external electromagnetic signals, the first shielding layer 4 made of graphene has excellent electromagnetic shielding performance, is light in weight and good in light transmittance, and cannot shield light rays on the backlight plate 12.

As shown in fig. 1, a plurality of light emitting diodes 121 are disposed on a side of the backlight plate 12 away from the second shielding layer 5.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an anti signal interference's LCD screen module, includes display module, drive module and PCB mainboard, its characterized in that: still including the LCD screen and the board in a poor light that set gradually in the display module assembly, first shielding layer is pasted and is close to at the LCD screen one side of board in a poor light, the board in a poor light is kept away from it has the second shielding layer to paste on one side of LCD screen, drive module installs the LCD screen both ends and with the LCD screen electricity is connected, the PCB mainboard pass through the FPC board with the drive module electricity is connected.

2. The liquid crystal display module of claim 1, wherein: the drive module is integrated with a signal receiving circuit, a signal shaping circuit, a signal output circuit and a drive circuit, one end of the signal receiving circuit is electrically connected with the mainboard through the FPC board, the other end of the signal receiving circuit is electrically connected with the signal output circuit through the signal shaping circuit, and the other end of the signal output circuit is electrically connected with the drive circuit.

3. The liquid crystal display module of claim 1, wherein: the second shielding layer is a metal shielding layer.

4. The liquid crystal display module of claim 3, wherein: an anti-oxidation layer is arranged on one side, away from the backlight plate, of the metal shielding layer.

5. The liquid crystal display module of claim 4, wherein: the oxidation resistant layer is polyimide.

6. The liquid crystal display module of claim 1, wherein: the first shielding layer is connected with the FPC board and grounded.

7. The liquid crystal display panel module of claim 6, wherein: the first shielding layer is made of graphene.

8. The liquid crystal display module of claim 1, wherein: and a plurality of light emitting diodes are arranged on one side of the backlight plate, which is far away from the second shielding layer.