CN110703483B - Liquid crystal display device and electronic apparatus - Google Patents

Liquid crystal display device and electronic apparatus Download PDF

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Publication number
CN110703483B
CN110703483B CN201911065002.8A CN201911065002A CN110703483B CN 110703483 B CN110703483 B CN 110703483B CN 201911065002 A CN201911065002 A CN 201911065002A CN 110703483 B CN110703483 B CN 110703483B
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China
Prior art keywords
plate
liquid crystal
crystal display
display device
optical
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CN201911065002.8A
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Chinese (zh)
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CN110703483A (en
Inventor
张辉
林敏宏
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Shenzhen Skyworth RGB Electronics Co Ltd
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Shenzhen Skyworth RGB Electronics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Abstract

The invention provides a liquid crystal display device and an electronic apparatus. The liquid crystal display device comprises a back plate, an optical assembly and a display panel, wherein the back plate comprises a bottom plate, a side plate and a cover plate, the side plate is arranged at the edge of the bottom plate in a surrounding mode, the cover plate is arranged on one side of the bottom plate, the side plate deviates from the side plate, the cover plate is arranged opposite to the bottom plate, the side plate and the cover plate form an accommodating cavity, the optical assembly is arranged in the accommodating cavity, the edge of the optical assembly is inserted into the bottom plate, the cover plate is arranged between the bottom plate and the cover plate, and the display panel is covered on the surface of the cover plate deviating from the bottom plate. The technical scheme of the invention provides the liquid crystal display device with a simple structure.

Description

Liquid crystal display device and electronic apparatus
Technical Field
The present invention relates to the field of liquid crystal display devices, and particularly to a liquid crystal display device and an electronic device using the same.
Background
With the rapid development of lcd tv technology, consumers are pursuing more and more slim lcd tvs. At present, the traditional liquid crystal display devices need complicated structures, and each liquid crystal display device comprises a middle frame, a face frame or a side frame, wherein the middle frame is used for supporting a liquid crystal panel, and the face frame or the side frame is used for fixing the liquid crystal panel, so that the structures are complicated.
Disclosure of Invention
The invention provides a liquid crystal display device, and aims to provide a liquid crystal display device with a simple structure.
In order to achieve the above object, the present invention provides a liquid crystal display device, including:
the back plate comprises a bottom plate, a side plate and a cover plate, wherein the side plate is arranged around the edge of the bottom plate, the cover plate is arranged on one side of the side plate, which is far away from the bottom plate, the cover plate and the bottom plate are oppositely arranged, and the bottom plate, the side plate and the cover plate form an accommodating cavity;
the optical assembly is arranged in the accommodating cavity, and the edge of the optical assembly is inserted between the bottom plate and the cover plate; and
and the display panel is covered on the surface of the cover plate deviating from the bottom plate.
In an embodiment of the invention, a distance between a surface of the optical component facing the cover plate and a surface of the cover plate facing the optical component is 0.4-1.0 mm.
In an embodiment of the invention, a limit block is arranged between the optical assembly and the side plate, and the limit block and the optical assembly are arranged at an interval.
In an embodiment of the invention, the number of the limiting blocks is a plurality, and the limiting blocks are arranged at intervals along the surrounding direction of the side plate.
In an embodiment of the invention, the optical assembly includes an optical film, a light guide plate, and a reflective sheet, and the reflective sheet, the light guide plate, and the optical film are sequentially disposed in a direction from the bottom plate to the cover plate;
the optical film is a laminated combination of one or more of a diffusion-prism composite film, a prism-prism composite film, a micro-lens-prism composite film and a prism-micro-lens composite film.
In an embodiment of the invention, a plurality of notches are concavely formed on a side wall of the optical film facing the side plate, and at least a portion of each of the limit blocks is inserted into one of the notches.
In an embodiment of the invention, the limiting block includes a limiting plate and a protruding block connected to each other, and the protruding block is disposed along a surface of the limiting plate facing the light guide plate and the reflective sheet in a protruding manner.
In an embodiment of the invention, a plurality of the bumps are arranged along the length direction of the limiting block, and the bumps are arranged at intervals.
In an embodiment of the invention, the distance between each bump and the adjacent bump is 1.2-1.5 mm.
The invention also provides electronic equipment comprising the liquid crystal display device.
The invention provides a liquid crystal display device, which is characterized in that a back plate is arranged into an integrated structure of a cover plate, a side plate and a bottom plate, wherein the cover plate, the side plate and the bottom plate are provided with accommodating cavities, the edge of an optical assembly is inserted between the bottom plate and the cover plate, and a display panel fixing cover is arranged on the surface of the cover plate, which is far away from the bottom plate.
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 a schematic diagram of an edge-lit LCD device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a direct-type liquid crystal display device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a back plate of a side-view LCD device according to the present invention;
FIG. 4 is a schematic structural diagram of a limiting block according to the present invention;
FIG. 5 is a schematic structural diagram of an optical film according to the present invention;
FIG. 6 is an enlarged view taken at A in FIG. 5;
description of the reference numerals
Reference numerals Name(s) Reference numerals Name (R)
100 Liquid crystal display device having a plurality of pixel electrodes 211 Incision
10 Back plate 22 Light guide plate
11 Base plate 23 Reflector plate
12 Side plate 24 Diffusion plate
13 Cover plate 30 Display panel
14 Containing cavity 40 Limiting block
20 Optical assembly 41 Bump
21 Optical film 42 Limiting plate
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
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 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 interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. 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, descriptions such as "first", "second", etc. in the present invention are used for descriptive purposes only 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 addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a liquid crystal display device 100, and aims to provide a liquid crystal display device 100 with simple structure, ultra-light weight, ultra-thin thickness and ultra-narrow width.
Referring to fig. 1 to fig. 6, in an embodiment of the liquid crystal display device 100 of the present invention, the liquid crystal display device 100 includes:
the back plate 10 comprises a bottom plate 11, a side plate 12 arranged around the edge of the bottom plate 11 and a cover plate 13 arranged on one side of the side plate 12 departing from the bottom plate 11, the cover plate 13 and the bottom plate 11 are oppositely arranged, and the bottom plate 11, the side plate 12 and the cover plate 13 form an accommodating cavity 14;
an optical assembly 20, wherein the optical assembly 20 is installed in the accommodating cavity 14, and an edge of the optical assembly 20 is inserted between the bottom plate 11 and the cover plate 13; and
and the display panel 30 is arranged on the surface of the cover plate 13, which is far away from the bottom plate 11, in a covering manner.
In this embodiment, the side plate 12 is sandwiched between the cover plate 13 and the bottom plate 11, the cover plate 13 is disposed parallel to the bottom plate 11, and the cover plate 13, the side plate 12 and the bottom plate 11 are integrally formed. The bottom plate 11 is formed by surrounding four sides connected, wherein the side plate 12 and the cover plate 13 are arranged around three adjacent sides of the bottom plate 11, and the installation and the disassembly of the optical assembly 20 can be facilitated by arranging the side plate 12 and the cover plate 13 around three adjacent sides of the bottom plate 11.
In the process of installing the optical component 20 in the accommodating cavity 14, firstly, one end of the optical component 20 is inserted into the left side edge of the accommodating cavity 14, then the optical component 20 is lifted from the middle to form a bridge-shaped arch structure, then, the other end of the optical component 20 is inserted into the right side edge of the accommodating cavity 14, and finally, the optical component 20 is pushed into the upper side edge of the accommodating cavity 14, so that the optical component 20 is installed in the accommodating cavity 14.
A buffering adhesive tape is arranged between the display panel 30 and the cover plate 13, the buffering adhesive tape is pasted on the cover plate 13 through an adhesive, and the display panel 30 is also pasted on the buffering adhesive tape through the adhesive to realize fixation.
The width of the cushion rubber strip can be determined according to the size of the display panel in actual use, and is not limited herein. However, the width of the buffering adhesive tape cannot be too small, and because the width of the buffering adhesive tape is small, the contact area between the buffering adhesive tape and the display panel 30 and the cover plate 13 is small, the adhesiveness to the display panel 30 and the cover plate 13 is insufficient, and the buffering adhesive tape is easy to fall off in the transportation or use process.
The distance between one side of the buffering adhesive tape departing from the side plate 12 and one side of the cover plate 13 departing from the side plate 12 is 0.2-0.5mm, and the buffering adhesive tape can effectively guarantee the pasting precision of the buffering adhesive tape due to certain pasting errors in the pasting process.
The distance between the outer side wall of the display panel 30 and the outer side wall of the side plate 12 is 1.0-3.0mm, and the outer side wall of the side plate 12 protrudes from the outer side wall of the display panel 30. When the distance between the outer side wall of the display panel 30 and the outer side wall of the side plate 12 is less than 1.0mm, the display panel 30 is easily protruded from the outer side wall of the side plate 12 in the assembling process, and the display panel 30 is easily damaged in use and transportation; when the distance between the outer sidewall of the display panel 30 and the outer sidewall of the side panel 12 is greater than 3.0mm, the overall width of the liquid crystal display device 100 may be increased.
It can be understood that, in the liquid crystal display device 100, by configuring the back plate 10 as an integral structure of the cover plate 13, the side plate 12 and the bottom plate 11, the cover plate 13, the side plate 12 and the bottom plate 11 are formed with the receiving cavity 14, the edge of the optical assembly 20 is inserted between the bottom plate 11 and the cover plate 13, and the display panel 30 is fixedly covered on the surface of the cover plate 13 facing away from the bottom plate 11, this arrangement can directly support and fix the display panel 30 through the cover plate 13, instead of the middle frame, face frame or side frame structure used in the conventional liquid crystal display device 100, thereby simplifying the structure for supporting and fixing the liquid crystal panel 30, and at the same time, reducing the width caused by the use of the middle frame or side frame, and the thickness caused by the face frame or side frame structure, the liquid crystal display device 100 is effectively simplified in structure by using the integrated rear plate 10, and also reduced in thickness and width.
Referring to fig. 1 to fig. 3, in an embodiment of the liquid crystal display device 100 of the present invention, a distance between an end of the cover 13 away from the side plate 12 and an outer side surface of the side plate 12 may be determined according to a size of the display panel 30, which is actually used, and is not limited herein. When the distance from the end of the cover plate 13 away from the side plate 12 to the outer side surface of the side plate 12 is within a certain range, the cover plate 13 can support the display panel 30 sufficiently, and the overall width of the liquid crystal display device 100 can be reduced effectively.
Referring to fig. 1 and fig. 2 in combination, in an embodiment of the liquid crystal display device 100 of the present invention, a distance between a surface of the optical element 20 facing the cover plate 13 and a surface of the cover plate 13 facing the optical element 20 is 0.4-1.0 mm.
Preferably, the distance between the surface of the optical component 20 facing the cover plate 13 and the surface of the cover plate 13 facing the optical component 20 is 0.6 mm.
It can be understood that, since the back plate 10 is formed by integrally molding the cover plate 13, the side plate 12 and the bottom plate 11, in order to better fit the optical assembly 20 in the accommodating cavity 14 during the assembly process, the distance between the cover plate 13 and the bottom plate 11 needs to be greater than the thickness of the optical assembly 20, and in addition, the optical assembly 20 may expand due to heat, so that a certain expansion space needs to be reserved. When the distance between the surface of the optical assembly 20 facing the cover plate 13 and the surface of the cover plate 13 facing the optical assembly 20 is less than 0.4mm, the installation of the optical assembly 20 is inconvenient, and when the optical assembly 20 expands due to heat, if there is not enough expansion space, the middle of the optical membrane 21 in the optical assembly 20 forms a dome-shaped structure, thereby affecting the image quality of the liquid crystal display device 100; when the distance between the surface of the optical component 20 facing the cover plate 13 and the surface of the cover plate 13 facing the optical component 20 is greater than 1.0mm, the optical component 20 may shake in the accommodating chamber 14 during transportation, the optical component 20 may be damaged easily, and the overall thickness of the liquid crystal display device 100 may become large due to the excessive distance.
Referring to fig. 1 and fig. 2, in an embodiment of the liquid crystal display device 100 of the present invention, a limiting block 40 is disposed between the optical element 20 and the side plate 12, and the limiting block 40 is spaced apart from the optical element 20.
In this embodiment, the limiting block 40 is a silicone member, and may also be other polymer foam plastics, such as polystyrene foam plastics, polyethylene foam plastics, and the like. The stopper 40 is adhered to the back plate 10 by using an adhesive.
The length of each stopper 40 is set to 40.5mm, which provides sufficient cushioning effect to the optical assembly 20.
The corresponding position on backplate 10 is provided with the location groove of stopper 40, can be convenient for stopper 40 accurate the installation in backplate 10 corresponding position.
It can be understood that, by providing the limiting block 40 between the optical assembly 20 and the back plate 10, the optical assembly 20 can be limited during transportation, and the optical assembly 20 is effectively protected. Since the optical assembly 20 is likely to expand in a high-temperature and high-humidity environment or during operation, the stopper 40 and the optical assembly 20 are spaced apart from each other with a certain gap therebetween, wherein the optical assembly 20 includes the optical film 21 and the light guide plate 22, the gap between the optical film 21 and the stopper plate 42 is defined as a first gap, and the gap between the light guide plate 22 or the diffuser plate 24 and the bump 41 is defined as a second gap. The first gap is configured to ensure that the optical film 21 has a sufficient expansion space, so as to prevent the optical film 21 from being squeezed by the limiting block 40 when expanding to affect the image quality of the liquid crystal display device 100, and the specific size of the first gap may be determined according to the material and size of the optical film 21; the second gap is smaller than the first gap, so that the light guide plate 22 can be effectively ensured to have a certain expansion space, and a large moving space of the light guide plate 22 in the accommodating cavity 14 can be avoided, and the situation that mesh points on the lower surface of the light guide plate 22 are easily damaged by large friction generated by large relative displacement between the light guide plate 22 and the reflector plate 23 in the transportation process, so that abnormal display of a white picture of the liquid crystal display device 100 is caused can be prevented.
Referring to fig. 1 and fig. 2, in an embodiment of the liquid crystal display device 100 of the present invention, a plurality of the limiting blocks 40 are disposed, and the plurality of the limiting blocks 40 are disposed at intervals along the surrounding direction of the side plate 12.
It can be understood that, by providing several stoppers 40 in the surrounding direction of the side plate 12, the moving range of the optical assembly 20 can be reduced, and the friction between the components in the optical assembly 20, including the friction between the optical film 21 and the light guide plate 22, the friction between the light guide plate 22 and the reflective sheet 23, and the friction between the reflective sheet 23 and the back plate 10, can be reduced, so as to further protect the optical assembly 20.
Referring to fig. 1 and fig. 2, in an embodiment of the liquid crystal display device 100 of the present invention, the optical assembly 20 includes an optical film 21, a light guide plate 22 and a reflective sheet 23, and the reflective sheet 23, the light guide plate 22 and the optical film 21 are sequentially disposed from the bottom plate 11 to the cover plate 13;
the optical film 21 is a laminated combination of one or more of a diffusion-prism composite film DOP, a prism-prism composite film POP, a micro-lens-prism composite film MOP and a prism-micro-lens composite film POM.
In this embodiment, the liquid crystal display device 100 is a side-view liquid crystal display device 100. The optical film 21, the light guide plate 22 and the reflector 23 are adhered together by an adhesive, and in the assembling process, the above structures can be adhered together firstly, and then the whole assembly is inserted into the accommodating cavity 14, or the above structures can be inserted into the accommodating cavity 14 one by one to be fixed.
The optical film 21 is made of a diffusion-prism composite film DOP, and the optical composite films are adhered together through an adhesive to form two or more layers of optical films 21 with different structures.
It can be understood that, by selecting the optical composite film for the optical film 21, the optical composite film has the advantages of high stiffness, good scratch resistance, good optical effect and the like, and can replace the existing film hanger structure, reduce the space of the traditional liquid crystal television backlight module avoiding the film hanger, and further reduce the width of the liquid crystal display device 100.
Referring to fig. 2, in another embodiment of the liquid crystal display device 100 according to the present invention, the liquid crystal display device 100 is a direct-type liquid crystal display device 100, in which the optical assembly 20 includes an optical film 21, a diffuser plate 24 and a reflective sheet 23, and the reflective sheet 23, the diffuser plate 24 and the optical film 21 are sequentially disposed in a direction from the bottom plate 11 to the cover plate 13.
Referring to fig. 1, fig. 2, fig. 5 and fig. 6, in an embodiment of the liquid crystal display device 100 of the present invention, a plurality of notches 211 are concavely disposed on a side wall of the optical film 21 facing the side plate 12, and at least a portion of each of the stoppers is inserted into one of the notches.
In this embodiment, a gap is formed between the surface of the limiting block 40 facing the optical film 21 and the optical film 21.
It can be understood that by inserting at least a portion of each stopper 40 into a notch 211, the moving range of the optical film 21 in the accommodating cavity 14 is reduced, the optical assembly 20 is prevented from moving greatly during transportation, friction between the optical film 21 and the light guide plate 22 is reduced, and friction between the light guide plate 22 and the reflective sheet 23 is reduced. Since the optical film 21 is likely to expand in a high-temperature and high-humidity environment or during operation, in order to ensure that the optical film 21 has a certain expansion space, a gap is formed between the limiting block 40 and the optical film 21, and the specific size of the gap may be determined according to factors such as the material and size of the optical film 21, which is not limited herein.
Referring to fig. 1, fig. 2 and fig. 4, in an embodiment of the liquid crystal display device 100 of the present invention, the limiting block 40 includes a limiting plate 42 and a protrusion 41 connected to each other, and the protrusion 41 is protruded along a surface of the limiting plate 42 facing the light guide plate 22 and the reflective sheet 23.
In this embodiment, a gap is formed between the surface of the bump 41 facing the light guide plate 22 and the light guide plate, which not only facilitates the assembly of the light guide plate 22, but also ensures that the light guide plate 22 has a certain expansion space.
It can be understood that, since the expansion coefficient of the light guide plate 22 is generally greater than the expansion coefficient of the optical film 21, the light guide plate 22 needs to have a sufficient expansion space, but the light guide plate 22 is likely to have a relatively large displacement with the reflective sheet 23 in a relatively large expansion space, so as to generate a relatively large friction, and therefore, the protrusion 41 is disposed to reduce the range of motion of the light guide plate 22, so as to ensure that the light guide plate 22 has a sufficient expansion space, and at the same time, to reduce the friction between the light guide plate 22 and the reflective sheet 23, and to avoid the relatively large friction between the reflective sheet 23 and the light guide plate, thereby avoiding the mesh points on the lower surface of the light guide plate 22 from being damaged, and affecting the light path, so as to cause abnormal display of the white image of the liquid crystal display apparatus 100.
Referring to fig. 1, fig. 2 and fig. 4, in an embodiment of the liquid crystal display device 100 of the present invention, a plurality of the protrusions 41 are disposed along the length direction of the limiting block 40, and a plurality of the protrusions 41 are disposed at intervals.
In this embodiment, when the light guide plate 22 expands, the side walls of the light guide plate 22 abut against the side walls of the bumps 41, and the bumps 41 are pressed to form a large expansion space.
It can be understood that, by arranging the plurality of protrusions 41 along the length direction of the limiting block 40 and arranging the plurality of protrusions 41 at intervals, the arrangement can ensure that the light guide plate 22 has a certain expansion space.
Referring to fig. 4, in an embodiment of the liquid crystal display device 100 of the present invention, a distance between each of the bumps 41 and the adjacent bump 41 is 1.2-1.5 mm.
In the present embodiment, the distance between each bump 41 and the adjacent bump 41 is 1.5 mm.
It can be understood that the light guide plate 22 needs a large expansion space, and the stability of the light guide plate 22 needs to be ensured. When the distance between each bump 41 and the adjacent bump 41 is less than 1.2mm, the expansion space of the light guide plate 22 at the position corresponding to the limiting block 40 is insufficient, so that the light guide plate 22 does not have enough expansion space in the transverse direction, and the middle of the light guide plate 22 forms an arch structure, so that a gap is formed between the middle of the light guide plate 22 and the reflective sheet 23, and the abnormal display of the picture in the middle of the liquid crystal display device 100 is caused; when the distance between each bump 41 and the adjacent bump 41 is greater than 1.5mm, the light guide plate 22 has a large movement space, resulting in poor relative stability of the light guide plate 22 and the reflective sheet 23.
The invention also provides an electronic device, which includes the liquid crystal display device 100 as described above, and the specific structure of the liquid crystal display device 100 is detailed in the foregoing embodiments. Since the electronic device adopts all the technical solutions of the foregoing embodiments, at least all the beneficial effects brought by all the technical solutions of all the foregoing embodiments are achieved, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is 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 (6)

1. A liquid crystal display device, comprising:
the backboard comprises a bottom board, side boards and a cover board, wherein the side boards are arranged around the edge of the bottom board, the cover board is arranged on one side of the side boards, which is far away from the bottom board, the cover board and the bottom board are oppositely arranged, and the bottom board, the side boards and the cover board form an accommodating cavity;
the optical assembly is arranged in the accommodating cavity, and the edge of the optical assembly is inserted between the bottom plate and the cover plate; and
the display panel is covered on the surface of the cover plate, which is deviated from the bottom plate;
a limiting block is arranged between the optical assembly and the side plate, and the limiting block and the optical assembly are arranged at intervals;
the optical assembly comprises an optical diaphragm, a light guide plate and a reflecting sheet, and the reflecting sheet, the light guide plate and the optical diaphragm are sequentially arranged from the bottom plate to the cover plate; a notch is concavely formed in the side wall of the optical diaphragm facing the side plate, and at least part of the limiting block is inserted into the notch;
the limiting block comprises a limiting plate and a convex block which are connected, the convex block is arranged in a protruding mode along the surface, facing the light guide plate and the reflecting sheet, of the limiting plate, a plurality of convex blocks are arranged at intervals along the length direction of the limiting block, and when the light guide plate expands, the side wall of the light guide plate is abutted against the side wall of the convex block and extrudes the convex block to form a larger expansion space; the limiting block is a silica gel piece, a gap between the optical film and the limiting plate is defined as a first gap, a gap between the light guide plate and the bump is defined as a second gap, and the second gap is smaller than the first gap.
2. The liquid crystal display device according to claim 1, wherein a distance between a surface of the optical member facing the cover plate and a surface of the cover plate facing the optical member is 0.4 to 1.0 mm.
3. The LCD device of claim 1, wherein the plurality of stoppers are arranged at intervals along the surrounding direction of the side plate.
4. The liquid crystal display device of claim 1, wherein the optical film is a stacked combination of one or more of a diffuser-prism composite film, a prism-prism composite film, a microlens-prism composite film, and a prism-microlens composite film.
5. The liquid crystal display device according to claim 1, wherein the distance between each bump and the adjacent bump is 1.2-1.5 mm.
6. An electronic device comprising the liquid crystal display device according to any one of claims 1 to 5.
CN201911065002.8A 2019-11-01 2019-11-01 Liquid crystal display device and electronic apparatus Active CN110703483B (en)

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