Liquid crystal display screen and liquid crystal television

Abstract

The utility model relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen and a liquid crystal television. The liquid crystal display screen comprises a liquid crystal module, a backlight module and a middle frame, the liquid crystal module is arranged on the front side of the middle frame, and the backlight module is arranged on the back side of the middle frame; the liquid crystal module comprises a liquid crystal panel and a cover plate arranged on the front side of the liquid crystal panel. The backlight module comprises a reflector plate, a plurality of LED light bars, a plurality of supporting columns, a diffusion plate and an optical composite film. The LED light bar is arranged on the reflector plate and faces the diffusion plate; the supporting column is arranged on the reflector plate and located between the reflector plate and the diffusion plate, and the supporting column is gradually reduced from the first end to the second end; the optical composite film is arranged on the diffusion plate. Due to the fact that the supporting columns are gradually reduced from the first ends to the second ends, the supporting columns cannot shield light, emitted to the liquid crystal panel, of the LED lamp strips, the backlight effect is better, the number of the lamp strips can be reduced, and the manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen and a liquid crystal television. Background Art

[0002] At present, most display screens on the market adopt liquid crystal display. In order to make the liquid crystal display have a better effect, a backlight module is usually set. Support columns are usually arranged in the lamp shade of the backlight module so that a certain distance can be maintained between the lamp beads and the liquid crystal panel, so that the backlight can better shine on the liquid crystal panel and for heat dissipation.

[0003] However, some support columns are columnar (such as cylindrical / square columns), and the light strips are arranged on both sides of the support columns. Therefore, a part of the light emitted by the light strips will be blocked by the support columns, and there may be a problem of insufficient brightness. Therefore, it is necessary to increase the number of light strips, which will increase the manufacturing cost.

[0004] For example, the liquid crystal display module and the liquid crystal display device disclosed in Chinese Patent Application No.: CN201610292323.1 specifically disclose that "one side of the liquid crystal panel is connected to the lamp shade, each support column is arranged around the optical module, and one end of each support column is connected to the rigid circuit board, and the other end of the support column is connected to the liquid crystal panel". The light emitted by the LED lamp assembly is blocked by the support, and it is necessary to increase the number of light strips, which will increase the manufacturing cost.

[0005] Another example is the LED backlight module with good sealing performance disclosed in Chinese Patent Application No.: CN201921783643.. Specifically disclosed is that "the LED light source is located between the support columns". The support columns have the problem of blocking the LED light, and it is necessary to increase the number of light strips, which will increase the manufacturing cost. Summary of the Utility Model

[0006] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a liquid crystal display screen, the support columns of which do not block the backlight, the backlight effect is good, which is beneficial to reducing the number of light strips and reducing the manufacturing cost, thereby overcoming the deficiencies of the existing technology.

[0007] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] The present application provides a liquid crystal display screen, including a liquid crystal module, a backlight module, and a middle frame; the liquid crystal module is arranged on the front side of the middle frame, and the backlight module is arranged on the back side of the middle frame;

[0009] The liquid crystal module includes a liquid crystal panel and a cover plate arranged on the front side of the liquid crystal panel;

[0010] The backlight module includes a reflector, a plurality of LED light bars, a plurality of support columns, a diffusion plate, and an optical composite film; the LED light bars are arranged on the reflector and face the diffusion plate; the support columns are arranged on the reflector and are located between the reflector and the diffusion plate, and the support columns gradually become smaller from the first end to the second end; the optical composite film is arranged on the diffusion plate.

[0011] Preferably, a flexible rubber strip is arranged on the middle frame, and the flexible rubber strip adheres to the middle frame and the liquid crystal panel.

[0012] Preferably, the optical composite film is one of POP, DPP, COP, DOP, CPP, and MOP films.

[0013] Preferably, the support column includes a mounting seat and a support part, and the support part includes triangular plates perpendicular to each other, and the top where the two triangular plates intersect converges into a frustum of a cone shape.

[0014] Preferably, the structure of the reflector is in the shape of a square flared opening.

[0015] This application provides a liquid crystal television, which includes the liquid crystal display screen, a frame, and a back plate described above. The frame is fixed to the back plate and clamps the liquid crystal display screen; a speaker and a main board are arranged inside the bottom of the back plate, and a camera is arranged inside the top of the back plate. The main board is connected to the speaker, the liquid crystal panel, and the camera. The power button of the main board and the camera are exposed on the front of the frame.

[0016] Preferably, a mounting frame is embedded inside the frame, and the mounting frame presses the cover plate against the middle frame.

[0017] Preferably, an anti-static film is arranged on the outer side of the cover plate, and a touch panel is arranged on the inner side of the cover plate.

[0018] Preferably, the frame and the back plate are metal parts or plastic parts, and a handle and a plurality of threaded posts are arranged on the back of the back plate.

[0019] Preferably, an optical adhesive is arranged between the liquid crystal panel and the cover plate.

[0020] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions, the liquid crystal module is arranged on the front of the middle frame, and the backlight module is arranged on the back of the middle frame. The liquid crystal panel provides a display function, and the backlight module provides a backlight function, improving the display effect.

[0021] The LED light strip is disposed on the reflective sheet and faces the diffusion plate. The first end of the support column is fixed to the reflective sheet, and the support column gradually becomes smaller from the first end to the second end. Therefore, when the light emitted by the LED light strip irradiates the liquid crystal panel, the light will not be blocked by the support column, and the backlight effect is better. The number of light strips can be reduced, which is beneficial to reducing the manufacturing cost. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the first embodiment of the present invention.

[0023] Figure 2 is a front view schematic diagram of the liquid crystal TV of the second embodiment of the present invention.

[0024] Figure 3 is a rear view schematic diagram of the liquid crystal TV of the second embodiment of the present invention.

[0025] Figure 4 is of the second embodiment of the present invention Figure 1 in the A-A cross-sectional schematic diagram.

[0026] Figure 5 is a partial schematic diagram of the second embodiment of the present invention.

[0027] Description of the Reference Numerals in the Drawings:

[0028] 10, frame; 11, back plate; 12, speaker; 13, main board; 14, camera; 15, mounting frame; 16, power button; 17, handle; 18, threaded post; 20, liquid crystal module; 21, middle frame; 22, flexible rubber strip; 23, liquid crystal panel; 24, cover plate; 30, backlight module; 31, reflective sheet; 32, LED light strip; 33, diffusion plate; 34, optical composite film; 310, support column; 311, mounting seat; 312, support portion. Detailed Embodiment

[0029] To further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following combines the drawings and preferred embodiments to describe in detail the specific implementation manners, structures, features and effects according to the present invention as follows.

[0030] Embodiment 1

[0031] Please refer to Figure 1 shown, which shows the specific structure of the first preferred embodiment of the present invention, which is a liquid crystal display screen.

[0032] Among them, the support column 310 gradually becomes smaller from the first end to the second end. The support column 310 is fixed to the reflective sheet 31 at the first end. Therefore, the support column 310 does not block the light of the LED light bar 32, and the backlight effect is good. It can reduce the number of LED light bars 32 and lower the manufacturing cost.

[0033] This application provides a liquid crystal display screen, including a liquid crystal module 20, a backlight module 30, and a middle frame 21; the liquid crystal module 20 is disposed on the front side of the middle frame 21, and the backlight module 30 is disposed on the back side of the middle frame 21; the liquid crystal module 20 includes a liquid crystal panel 23 and a cover plate 24 disposed on the front side of the liquid crystal panel 23; the backlight module 30 includes a reflective sheet 31, a plurality of LED light bars 32, a plurality of support columns 310, a diffusion plate 33, and an optical composite film 34; the LED light bars 32 are disposed on the reflective sheet 31 and face the diffusion plate 33; the support columns 310 are disposed on the reflective sheet 31 and are located between the reflective sheet 31 and the diffusion plate 33, and the support column 310 gradually becomes smaller from the first end to the second end; the optical composite film 34 is disposed on the diffusion plate 33. The liquid crystal module 20 can provide a display function, and the backlight module 30 provides a backlight function. The liquid crystal module 20 and the backlight module 30 are installed on the middle frame 21 by means of screws and / or adhesives. The main function of the diffusion plate 33 is to provide a uniform surface light source to ensure that the display can normally display images. The light of the LED light bar 32 is projected onto the liquid crystal panel 23 through the diffusion plate 33, resulting in a better display effect. The liquid crystal panel 23 is one of a VA panel, an IPS panel, and a CPA panel. The reflective sheet 31 is mainly used to enhance the light source brightness and improve the light source utilization rate. The optical composite film 34 integrates multiple optical functions on one film, significantly improving the performance of the display device and the user experience. The first end of the support column 310 is fixed to the reflective sheet 31, the second end of the support column 310 supports the diffusion plate 33 / the liquid crystal panel 23, and the support column 310 gradually becomes smaller from the first end to the second end. Therefore, the support column 310 does not block the light source, the backlight effect is better, the number of LED light bars 32 can be reduced, and it is beneficial to reduce the manufacturing cost. The cover plate is preferably a glass cover plate.

[0034] Preferably, a flexible rubber strip 22 is disposed on the middle frame 21, and the flexible rubber strip 22 adheres to the middle frame 21 and the liquid crystal panel 23. The flexible rubber strip 22 has elasticity. The flexible rubber strip 22 is an elastic plastic strip, which can play a role in pasting and fixing, as well as sealing. The flexible rubber strip 22 makes the installation and fixation of the liquid crystal panel 23 simpler.

[0035] Preferably, the optical composite film 34 is one of POP (the POP film is a composite film composed of upper and lower brightness enhancement films), DPP (the DPP film is a diffusion-prism-prism composite film mainly used to enhance the brightness of a display and improve the display effect), COP (the COP film is a film made of cyclic olefin polymer (Cyclic Olefin Polymer), with advantages such as high transparency, good dimensional stability, excellent barrier properties, heat resistance, and corrosion resistance), DOP (the DOP film is a composite film, which is a multifunctional optical film material that uses a composite process to assemble two or three different optical films into a single film sheet), CPP (the CPP film, also known as the cast polypropylene film, is a non-stretched and non-oriented polypropylene protective film. It has good transparency, uniform thickness, and excellent anisotropic property balance, making the CPP film an ideal protective material), and MOP (the MOP film is a multifunctional optical composite film 34, which is prepared through a composite process route based on the structural design and composite resin development of two to three optical films).

[0036] Preferably, the support post 310 includes a mounting base 311 and a support portion 312. The support portion 312 includes triangular plates perpendicular to each other, and the top where the two triangular plates intersect converges into a frustum shape. The mounting base 311 can be plate-shaped, U-shaped, or door-shaped. The frustum shape can avoid damaging the diffusion plate 33 and at the same time make the light irradiate the diffusion plate 33 more evenly.

[0037] Preferably, the structure of the reflector 31 is in the shape of a square horn mouth 12, and this structure can make the light of the LED light bar 32 more parallel to irradiate the liquid crystal panel 23, resulting in a better display effect.

[0038] Embodiment 2

[0039] Please refer to Figures 2 - 5 As shown, the present application provides a liquid crystal television, including the liquid crystal display screen, the frame 10, and the backplane 11. The frame 10 is fixed to the backplane 11 and clamps the liquid crystal display screen; a speaker 12 and a main board 13 are arranged inside the bottom of the backplane 11, and a camera 14 is arranged inside the top of the backplane 11. The main board 13 is connected to the speaker 12, the liquid crystal panel 23, and the camera 14. The power button 16 of the main board 13 and the camera 14 are exposed on the front of the frame 10. The frame 10 and the backplane 11 are fastened with screws and usually sealed with a sealing strip, having a good dust-proof effect. The main board 13 can play roles such as control, display, signal processing, and signal input / output. The screws pass through the middle frame 21, enabling the frame 10, the backplane 11, and the middle frame 21 to be assembled together.

[0040] Preferably, an installation frame 15 is embedded inside the frame 10, and the installation frame 15 presses the cover plate 24 against the middle frame 21. A fitting port is provided inside the frame 10, and the installation frame 15 is embedded into the fitting port. When the frame 10, the back plate 11, and the middle frame 21 are assembled together, the installation frame 15 presses against the cover plate 24, playing a role in fixing and sealing.

[0041] Preferably, an anti-static film is pasted on the outer side of the cover plate 24, and a touch panel is provided on the inner side of the cover plate 24. The anti-static film can be one of a PET anti-static protection film, a PET anti-static protection film, and a PU anti-static protection film. The touch panel is connected to the main board 13, and the touch panel enables the LCD TV to have a touch function, making the function more powerful.

[0042] Preferably, the frame 10 and the back plate 11 are metal parts or plastic parts, and a handle 17 and a plurality of threaded posts 18 are provided on the back of the back plate 11. The handle facilitates the handling of the LCD TV. The threaded posts facilitate the installation of the LCD TV on the TV bracket, which is very convenient.

[0043] Preferably, an optical adhesive is provided between the liquid crystal panel 23 and the cover plate 24. The optical adhesive is preferably an OCA optical adhesive. OCA optical adhesive, the full name is Optically Clear Adhesive, is a special adhesive designed for transparent optical components. The optical adhesive improves the display effect and also prevents dust from entering the gap between the liquid crystal panel 23 and the cover plate 24.

[0044] In summary, the design focus of the present utility model is that the support column 310 gradually becomes smaller from the first end to the second end. The support column 310 does not block the light of the LED light bar 32 from shining on the liquid crystal panel 23, and the backlight effect is better. The number of light strips can be reduced, which is beneficial to reducing the manufacturing cost.

[0045] The above is only a preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain an equivalent embodiment with equivalent changes, but as long as it does not depart from the technical content of the present utility model, any brief modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A liquid crystal display screen, characterized in that: It includes a liquid crystal module, a backlight module, and a middle frame; the liquid crystal module is arranged on the front side of the middle frame, and the backlight module is arranged on the back side of the middle frame; The liquid crystal module includes a liquid crystal panel and a cover plate arranged on the front side of the liquid crystal panel; The backlight module includes a reflective sheet, a plurality of LED light bars, a plurality of support columns, a diffusion plate, and an optical composite film; the LED light bars are arranged on the reflective sheet and face the diffusion plate; the support columns are arranged on the reflective sheet and are located between the reflective sheet and the diffusion plate, and the support columns gradually become smaller from the first end to the second end; the optical composite film is arranged on the diffusion plate.

2. A liquid crystal display screen according to claim 1, characterized in that: A flexible rubber strip is arranged on the middle frame, and the flexible rubber strip adheres to the middle frame and the liquid crystal panel.

3. A liquid crystal display screen according to claim 1, characterized in that: The optical composite film is one of the films of POP, DPP, COP, DOP, CPP, and MOP.

4. A liquid crystal display screen according to claim 1, characterized in that: The support column includes a mounting seat and a support portion, and the support portion includes triangular plates perpendicular to each other, and the top where the two triangular plates intersect converges into a frustum shape.

5. A liquid crystal display screen according to claim 1, characterized in that: The structure of the reflective sheet is in the shape of a square flaring mouth.

6. A liquid crystal television, characterized in that: It includes the liquid crystal display screen, the frame, and the backplane described in any one of claims 1-5, the frame is fixed to the backplane and clamps the liquid crystal display screen; a speaker and a main board are arranged inside the bottom of the backplane, a camera is arranged inside the top of the backplane, the main board is connected to the speaker, the liquid crystal panel, and the camera, the power-on key of the main board, and the camera are exposed on the front side of the frame.

7. The liquid crystal television according to claim 6, characterized in that: An installation frame is embedded inside the frame, and the installation frame presses the cover plate against the middle frame.

8. A liquid crystal television according to claim 6, characterized in that: An anti-static film is arranged on the outer side of the cover plate, and a touch panel is arranged on the inner side of the cover plate.

9. A liquid crystal television according to claim 6, characterized in that: The frame and the backplane are metal parts or plastic parts, and a handle and a plurality of threaded posts are arranged on the back of the backplane.

10. A liquid crystal television according to claim 6, characterized in that: An optical adhesive is arranged between the liquid crystal panel and the cover plate.

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