CN113687538B - Liquid crystal display device having a light shielding layer - Google Patents
Liquid crystal display device having a light shielding layer Download PDFInfo
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- CN113687538B CN113687538B CN202110936141.4A CN202110936141A CN113687538B CN 113687538 B CN113687538 B CN 113687538B CN 202110936141 A CN202110936141 A CN 202110936141A CN 113687538 B CN113687538 B CN 113687538B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 75
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 27
- 239000000758 substrate Substances 0.000 description 14
- 239000010409 thin film Substances 0.000 description 9
- 239000010408 film Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G02F1/1335—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
-
- 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
- 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
- G02F1/133612—Electrical details
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The application provides a liquid crystal display device; this liquid crystal display device is through setting up first locating hole into the connecting hole and set up in the bayonet socket of at least one side of connecting hole to make the width of bayonet socket be less than the diameter of fixed component, then can be when first locating hole and second locating hole misalignment, because the diameter of fixed component is greater than the width of bayonet socket, make the bayonet socket block fixed component to the connecting hole, make fixed component drive printed circuit board and remove, make first locating hole and connecting hole counterpoint accurate, thereby make fixed component pass first locating hole and connecting hole that can be accurate, the phenomenon of sliding silk has avoided appearing, liquid crystal display panel has been avoided appearing inefficacy.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a liquid crystal display device.
Background
In order to improve the power supply capability, the conventional liquid crystal display device is provided with electronic components on a printed circuit board so as to process input signals of a liquid crystal display panel and then input the processed input signals into an IC (integrated circuit) through the flexible circuit board, thereby realizing signal processing and power supply of the liquid crystal display panel. In the production and the use of printed circuit board, in order to avoid printed circuit board to rock and lead to flexible circuit board to bind inefficacy, can set up about the hangers on the backplate, set up the locating hole on the hangers to set up corresponding locating hole on printed circuit board, adopt the mode of screw fixation to fix printed circuit board and backlight unit, thereby avoid printed circuit board to rock.
However, when the existing printed circuit board is fixed with the backlight board, due to certain tolerance in the assembly process of the liquid crystal display panel and the backlight module and the binding process of the printed circuit board, the positioning holes on the printed circuit board and the backlight board cannot correspond, when the printed circuit board and the backlight board are fixed by using screws, a silk slipping phenomenon can occur, the printed circuit board and the backlight board cannot be effectively fixed, the printed circuit board can shake, and the liquid crystal display device fails.
Therefore, the existing liquid crystal display device has the technical problem that the liquid crystal display device is invalid due to the fact that the positioning holes on the printed circuit board and the backlight board cannot be accurately aligned.
Disclosure of Invention
The embodiment of the application provides a liquid crystal display device, which is used for solving the technical problem that the liquid crystal display device is invalid because the positioning holes on a printed circuit board and a backlight board cannot be accurately aligned in the prior liquid crystal display device.
An embodiment of the present application provides a liquid crystal display device, including:
a liquid crystal display panel;
the backlight module is arranged at one side of the liquid crystal display panel and comprises a backlight plate, and a first positioning hole is formed in the backlight plate;
the printed circuit board is arranged on one side, far away from the liquid crystal display panel, of the backlight module and comprises a second positioning hole, and the second positioning hole is arranged corresponding to the first positioning hole;
a flexible circuit board connected with the liquid crystal display panel and the printed circuit board;
the liquid crystal display device further comprises a fixing member, the fixing member penetrates through the first positioning hole and the second positioning hole to be connected with the backlight plate and the printed circuit board, the first positioning hole comprises a connecting hole and a bayonet arranged on at least one side of the connecting hole, and the width of the bayonet is smaller than the diameter of the fixing member.
In some embodiments, the width of the bayonet decreases in a direction away from the center of the first positioning hole, and the maximum width of the bayonet is less than the diameter of the securing member.
In some embodiments, the diameter of the securing member increases in a direction in which the second locating hole is away from the first locating hole, and the maximum width of the bayonet is less than the minimum diameter of the securing member.
In some embodiments, the bayonet comprises a first bayonet, a second bayonet, a third bayonet and a fourth bayonet which are positioned around the connecting hole, the shapes of the first bayonet, the second bayonet, the third bayonet and the fourth bayonet are the same, and the first bayonet, the second bayonet, the third bayonet and the fourth bayonet are sequentially connected.
In some embodiments, the first positioning hole has a cross-sectional shape that includes at least one of a four-bar star, a five-bar star, and a six-bar star.
In some embodiments, an adhesive material is disposed within the bayonet, the adhesive material connecting the backlight plate and the fixing member.
In some embodiments, the diameter of the second locating hole is greater than or equal to the diameter of the connecting hole.
In some embodiments, the securing member includes a first portion in contact with the first locating hole, a second portion in contact with the second locating hole, the first portion having a diameter greater than a maximum width of the bayonet.
In some embodiments, the diameter of the securing member is constant along a direction of the second locating hole away from the first locating hole.
In some embodiments, the width of the bayonet is constant in a direction away from the center of the first positioning hole, and the width of the bayonet is less than the minimum diameter of the securing member.
The beneficial effects are that: the application provides a liquid crystal display device; the liquid crystal display device comprises a liquid crystal display panel, a backlight module, a printed circuit board and a flexible circuit board, wherein the backlight module is arranged on one side of the liquid crystal display panel, the backlight module comprises the backlight board, a first positioning hole is formed in the backlight board, the printed circuit board is arranged on one side, far away from the liquid crystal display panel, of the backlight module, the printed circuit board comprises a second positioning hole, the second positioning hole and the first positioning hole are correspondingly arranged, the flexible circuit board is connected with the liquid crystal display panel and the printed circuit board, the liquid crystal display device further comprises a fixing member, the fixing member penetrates through the first positioning hole and the second positioning hole to connect the backlight board and the printed circuit board, the first positioning hole comprises a connecting hole and a bayonet arranged on at least one side of the connecting hole, and the width of the bayonet is smaller than the diameter of the fixing member. This application is through setting up the first locating hole into the connecting hole and setting up in the bayonet socket of at least one side of connecting hole to make the width of bayonet socket be less than the diameter of fixed component, then can be when first locating hole and second locating hole misalignment, because the diameter of fixed component is greater than the width of bayonet socket, make the bayonet socket with fixed component card to the connecting hole, make fixed component drive printed circuit board and remove, make first locating hole and connecting hole counterpoint accurate, thereby make fixed component pass first locating hole and connecting hole that can be accurate, avoid appearing the smooth silk phenomenon, avoided liquid crystal display panel to appear inefficacy.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a first schematic diagram of a liquid crystal display device according to an embodiment of the present application.
Fig. 2 is a second schematic diagram of the liquid crystal display device according to the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The embodiment of the application provides a liquid crystal display device aiming at the technical problem that the liquid crystal display device is invalid due to the fact that the positioning holes on a printed circuit board and a backlight board cannot be accurately aligned in the existing liquid crystal display device.
As shown in fig. 1 and 2, an embodiment of the present application provides a liquid crystal display device, including:
a liquid crystal display panel 11;
a backlight module 12 disposed on one side of the lcd panel 11, the backlight module 12 including a backlight plate 121, wherein the backlight plate 121 is provided with a first positioning hole 21;
the printed circuit board 13 is disposed on a side of the backlight module 12 away from the liquid crystal display panel 11, and includes a second positioning hole 131, where the second positioning hole 131 is disposed corresponding to the first positioning hole 21;
a flexible circuit board 14 connected to the liquid crystal display panel 11 and the printed circuit board 13;
wherein the liquid crystal display device further comprises a fixing member 15, the fixing member 15 passes through the first positioning hole 21 and the second positioning hole 131 to connect the backlight plate 121 and the printed circuit board 13, and the first positioning hole 21 comprises a connection hole 211 and a bayonet 212 arranged at least one side of the connection hole 211, and the width of the bayonet 212 is smaller than the diameter of the fixing member 15.
The embodiment of the application provides a liquid crystal display device, this liquid crystal display device is through setting up first locating hole into the connecting hole and set up in the bayonet socket of at least one side of connecting hole, and make the width of bayonet socket be less than the diameter of fixed component, then can be when first locating hole and second locating hole misalignment, because the diameter of fixed component is greater than the width of bayonet socket, make the bayonet socket with fixed component card to the connecting hole, make fixed component drive printed circuit board and remove, make first locating hole and connecting hole counterpoint accurate, thereby make fixed component pass first locating hole and connecting hole that can be accurate, the phenomenon of sliding wire appears is avoided, liquid crystal display panel appears inefficacy has been avoided.
In this application embodiment, compare in that the shape of first locating hole and second locating hole is the same, for example, prior art adopts the round hole as the locating hole, when first locating hole and second locating hole are inaccurate to be aligned, can lead to fixed component (for example screw) down to remove, the silk phenomenon appears sliding, thereby the printed circuit board appears rocking and leads to flexible circuit board to bind poorly, liquid crystal display device inefficacy, through the special design of locating hole in this application, make first locating hole and second locating hole when inaccurate to be aligned, fixed component can't move down, thereby fixed component drives the printed circuit board and removes and thereby make first locating hole and second locating hole counterpoint accurate, thereby the appearance of silk phenomenon has been avoided, the accurate counterpoint of first locating hole and second locating hole has been guaranteed, avoid liquid crystal display device to inefficacy because the inaccurate appearance of counterpoint.
Specifically, as shown in fig. 2 (a), the backlight plate 121 includes a hanging ear 1211, and the hanging ear 1211 is provided with a first positioning hole 21, and by setting the hanging ear on the backlight plate, and fixing the hanging ear on the backlight plate, and setting the first positioning hole on the hanging ear, it is possible to avoid the printed circuit board from being worn by attaching the printed circuit board to the backlight plate.
In the connection process of the printed circuit board and the back plate, in order to facilitate the connection of the printed circuit board and the back plate, the fixing member passes through the second positioning hole and then passes through the first positioning hole, and the connection mode is described in the embodiment of the present application.
When the width of the bayonet is not fixed, the problem that the silk slipping phenomenon occurs because the fixing member can pass through the bayonet is solved. In one embodiment, as shown in fig. 2, the width of the bayonet 212 decreases in a direction away from the center of the first positioning hole 21, and the maximum width of the bayonet 212 is smaller than the diameter of the fixing member 15. The maximum width of the bayonet is smaller than the diameter of the fixing member, so that the fixing member cannot pass through the bayonet when passing through the second positioning hole, and the fixing member can drive the printed circuit board to move, so that the first positioning hole and the second positioning hole are aligned accurately, and the printed circuit board and the backlight module are fixedly connected.
Specifically, as shown in fig. 2 (a), the width of the bayonet 212 decreases in a direction away from the center of the first positioning hole 21, so that the maximum width of the bayonet 212 is smaller than the width of the fixing member, and accurate alignment connection between the first positioning hole and the second positioning hole is achieved.
Specifically, the cross-sectional shape of the bayonet can be triangular, so that the width of the bayonet is reduced from the direction away from the center of the first positioning hole, the shape of the bayonet can also be a curve, the width of the bayonet can be reduced from the direction away from the center of the first positioning hole through setting the shape of the bayonet to the curve, and when the first positioning hole and the second positioning hole are not aligned accurately, the printed circuit board is driven to move through the fixing member, so that the alignment of the first positioning hole and the second positioning hole is accurate, and the printed circuit board and the backlight board are connected and fixed.
When the straight line of the fixing member is not fixed, the problem that part of the fixing member passes through the bayonet to cause the phenomenon of sliding wire exists. In one embodiment, as shown in fig. 2, the diameter of the fixing member 15 increases in a direction in which the second positioning hole 131 is away from the first positioning hole 21, and the maximum width of the bayonet 212 is smaller than the minimum diameter of the fixing member 15. Through making the maximum width of bayonet socket be less than the minimum diameter of fixed component, then the fixed component can't pass the bayonet socket, and the fixed component can drive the printed circuit board and remove when can't pass the bayonet socket for first locating hole and second locating hole are accurate to be aimed at, make fixed component fixed connection printed circuit board and backlight, thereby avoid fixed component to pass the bayonet socket and lead to smooth silk phenomenon, make first locating hole and second locating hole accurate to be aimed at.
In one embodiment, the bayonet comprises bayonets positioned at two sides of the connecting hole, and the bayonets positioned at two sides of the connecting hole are oppositely arranged. Through set up the bayonet socket in the both sides of connecting hole, then not accurately counterpoint at first locating hole and second locating hole, when leading to first locating hole and second locating hole to have the deviation, through the setting of the bayonet socket of connecting hole both sides, make the unable bayonet socket that passes of fixed component, the fixed component can drive the printed circuit board and remove, make first locating hole and second locating hole accurately counterpoint, thereby make printed circuit board and backlight unit fixed connection, avoid appearing sliding between printed circuit board and the backlight unit, avoid printed circuit board to slide and drive the flexible circuit board and remove, lead to display panel inefficacy.
In an embodiment, the bayonet socket is including being located the three bayonet socket around the connecting hole, three bayonet socket divides the connecting hole into the triplex with halving, through setting up three bayonet socket for first locating hole and second locating hole inaccurately align, when leading to first locating hole and second locating hole to have the deviation, through the setting of the bayonet socket of connecting hole both sides, make the fixed component unable bayonet socket that passes, the fixed component can drive the printed circuit board and remove, make first locating hole and second locating hole accurately counterpoint, thereby make printed circuit board and backlight fixed connection, avoid appearing sliding between printed circuit board and the backlight, avoid the printed circuit board to slide and drive the flexible circuit board and remove, lead to display panel inefficacy.
In one embodiment, the bayonet comprises a first bayonet, a second bayonet, a third bayonet and a fourth bayonet which are positioned around the connecting hole, the shapes of the first bayonet, the second bayonet, the third bayonet and the fourth bayonet are the same, and the first bayonet, the second bayonet, the third bayonet and the fourth bayonet are sequentially connected. Through set up first bayonet socket, second bayonet socket, third bayonet socket, fourth bayonet socket around the connecting hole for when the deviation of the first locating hole of backlight unit and second locating hole is in arbitrary direction, because the existence of first bayonet socket, second bayonet socket, third bayonet socket and fourth bayonet socket makes the unable bayonet socket that passes of fixed member, and the fixed member can drive the printed circuit board and remove, can make first locating hole, second locating hole accurate counterpoint, thereby avoids fixed member to appear the smooth silk phenomenon, realizes the fixed to the printed circuit board.
In an embodiment, the cross-sectional shape of the first positioning hole includes at least one of a four-bar star, a five-bar star and a six-bar star, when the connecting hole and the bayonet are formed, the connecting hole and the bayonet can be integrally formed, the first positioning hole with the connecting hole and the bayonet is directly formed, and the specific shape can include a four-bar star, a five-bar star, a six-bar star, a four-bar star, a five-bar star and a six-bar star, but the embodiment of the application is not limited to this, and the first positioning hole can also have other shapes with the bayonet, such as diamond-like shape.
In one embodiment, an adhesive material is disposed in the bayonet, and the adhesive material connects the backlight plate and the fixing member. Through setting up bonding material in the bayonet socket for after the fixed component passes first locating hole and second locating hole, through bonding fixed component and backlight, thereby avoid the fixed component to appear rocking, make the connection of printed circuit board and backlight more fixed.
In one embodiment, when the adhesive material is used to bond the backlight plate and the fixing member, the adhesive may be added into the bayonet after the fixing member passes through the first positioning hole and the second positioning hole, the adhesive may enter through the bayonet, and the fixing member and the backlight plate may be bonded after the adhesive is cured.
In one embodiment, the diameter of the second positioning hole is greater than or equal to the diameter of the connecting hole. Through making the straight line of second locating hole be greater than or equal to the diameter of connecting hole for when the diameter of fixed component increases along the direction that the first locating hole was kept away from to the second locating hole, can cooperate with first locating hole and second locating hole to fixed component, and this setting mode can make fixed component's fixed effect better.
The fixing member can respectively pass through the first positioning hole and the second positioning hole, so that the part of the fixing member passing through the first positioning hole cannot pass through the bayonet, and the phenomenon of sliding wires of the fixing member can be avoided. In one embodiment, the securing member includes a first portion in contact with the first locating hole, a second portion in contact with the second locating hole, the first portion having a diameter greater than a maximum width of the bayonet. The diameter of the first part of the fixing member is larger than the maximum width of the bayonet, so that the fixing member cannot pass through the bayonet after passing through the second positioning hole, the phenomenon of sliding wires is avoided, the first positioning hole and the second positioning hole are aligned accurately, and the printed circuit board is fixedly connected with the backlight board.
In one embodiment, the securing member includes a third portion passing through the first locating hole, a fourth portion contacting the first locating hole, a fifth portion contacting the second locating hole, the third portion having a diameter less than a maximum width of the bayonet, the fourth portion having a diameter greater than the maximum width of the bayonet. Through making the straight line of third part be less than the maximum width of bayonet socket, then the fixed component is when contacting with first locating hole, even the fixed component gets into the bayonet socket, because the diameter of fourth part is greater than the maximum width of bayonet socket, the fixed component is in rotatory in-process, because downward pressure and the effort of bayonet socket to the fixed component for the bayonet socket extrudees the fixed component to the connecting hole, and the fixed component can drive the printed circuit board and remove, make first locating hole and second locating hole accurate counterpoint, thereby improve the positioning accuracy of fixed component, make printed circuit board and backlight fixedly connected.
In one embodiment, the fixing member includes a screw, and a corresponding thread may be provided on the printed circuit board to fixedly connect the fixing member with the printed circuit board.
Specifically, as shown in (c) of fig. 2, the shape of the fixing member includes a truncated cone, but the embodiment of the present application is not limited thereto, and for example, the shape of the fixing member includes a screw shape, a column shape.
In an embodiment, the diameter of the fixing member is unchanged along the direction that the second positioning hole is far away from the first positioning hole, when the fixing member is arranged, the diameter of the fixing member can be unchanged, and after the fixing member passes through the second positioning hole, the fixing member can not pass through the bayonet, so that the fixing member drives the printed circuit board to move, and the printed circuit board is accurately aligned and connected with the backlight board.
In one embodiment, the width of the bayonet is constant in a direction away from the center of the first positioning hole, and the width of the bayonet is smaller than the minimum diameter of the fixing member. By making the width of the bayonet constant and making the width of the bayonet smaller than the minimum diameter of the fixing member, the fixing member can pass through the connecting hole and the second positioning hole to fixedly connect the backlight board and the printed circuit board.
Specifically, as shown in (b) of fig. 2, the cross-sectional shape of the second positioning hole 131 includes a circular shape, and the positioning member is facilitated to be connected through the first positioning hole and the second positioning hole by making the shape of the second positioning hole circular, but the embodiment of the present application is not limited thereto, and the second positioning hole may be also quadrangular.
In one embodiment, as shown in fig. 2 (a), the backlight module 12 further includes a light source 122 and an optical film 123, and in this embodiment of the present application, the type of the backlight module is not limited, for example, the backlight module includes a side-in backlight module and a linear backlight module, the optical film includes a diffusion sheet and a reflection sheet, and the backlight module further includes a light guide plate.
In one embodiment, the liquid crystal display panel includes an array substrate, a color film substrate, and a liquid crystal layer disposed between the array substrate and the color film substrate, and when the liquid crystal display panel is disposed, the liquid crystal display panel may include a liquid crystal display panel having the array substrate and the color film substrate.
Specifically, the array substrate comprises a first substrate, a blocking layer arranged on the first substrate, a buffer layer arranged on the blocking layer, an active layer arranged on the buffer layer, a first gate insulating layer arranged on the active layer, a first gate layer arranged on the first gate insulating layer, a second gate insulating layer arranged on the first gate layer, a second gate arranged on the second gate insulating layer, an interlayer insulating layer arranged on the second gate, a source drain electrode layer arranged on the interlayer insulating layer, a planarization layer arranged on the source drain electrode layer and a pixel electrode layer arranged on the planarization layer.
Specifically, the array substrate comprises a thin film transistor, and the thin film transistor comprises a bottom gate top contact thin film transistor, a bottom gate bottom contact thin film transistor, a top gate top contact thin film transistor and a top gate bottom contact thin film transistor.
Specifically, the thin film transistor includes an oxide thin film transistor and a low temperature polysilicon thin film transistor.
Specifically, the color film substrate comprises a second substrate, a color resistance layer and a black matrix layer which are arranged on the second substrate, and a common electrode layer which is arranged on the color resistance layer.
In one embodiment, the liquid crystal display panel includes a COA (Color On Array) substrate, and a Color film layer is disposed On the Array layer.
As can be seen from the above embodiments:
the application provides a liquid crystal display device; the liquid crystal display device comprises a liquid crystal display panel, a backlight module, a printed circuit board and a flexible circuit board, wherein the backlight module is arranged on one side of the liquid crystal display panel, the backlight module comprises the backlight board, a first positioning hole is formed in the backlight board, the printed circuit board is arranged on one side, far away from the liquid crystal display panel, of the backlight module, the printed circuit board comprises a second positioning hole, the second positioning hole and the first positioning hole are correspondingly arranged, the flexible circuit board is connected with the liquid crystal display panel and the printed circuit board, the liquid crystal display device further comprises a fixing member, the fixing member penetrates through the first positioning hole and the second positioning hole to connect the backlight board and the printed circuit board, the first positioning hole comprises a connecting hole and a bayonet arranged on at least one side of the connecting hole, and the width of the bayonet is smaller than the diameter of the fixing member. This application is through setting up the first locating hole into the connecting hole and setting up in the bayonet socket of at least one side of connecting hole to make the width of bayonet socket be less than the diameter of fixed component, then can be when first locating hole and second locating hole misalignment, because the diameter of fixed component is greater than the width of bayonet socket, make the bayonet socket with fixed component card to the connecting hole, make fixed component drive printed circuit board and remove, make first locating hole and connecting hole counterpoint accurate, thereby make fixed component pass first locating hole and connecting hole that can be accurate, avoid appearing the smooth silk phenomenon, avoided liquid crystal display panel to appear inefficacy.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The foregoing has described in detail a liquid crystal display device provided by embodiments of the present application, and specific examples have been applied herein to illustrate the principles and embodiments of the present application, where the foregoing examples are only for aiding in understanding the technical solutions and core ideas of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A liquid crystal display device, comprising:
a liquid crystal display panel;
the backlight module is arranged at one side of the liquid crystal display panel and comprises a backlight plate, and a first positioning hole is formed in the backlight plate;
the printed circuit board is arranged on one side, far away from the liquid crystal display panel, of the backlight module and comprises a second positioning hole, and the second positioning hole is arranged corresponding to the first positioning hole;
a flexible circuit board connected with the liquid crystal display panel and the printed circuit board;
the liquid crystal display device further comprises a fixing member, the fixing member penetrates through the first positioning hole and the second positioning hole to connect the backlight plate and the printed circuit board, the first positioning hole comprises a connecting hole and a bayonet arranged on at least one side of the connecting hole, and the width of the bayonet is smaller than the diameter of the fixing member; in either state, the securing member cannot pass through the bayonet.
2. The liquid crystal display device according to claim 1, wherein a width of the bayonet decreases in a direction away from a center of the first positioning hole, and a maximum width of the bayonet is smaller than a diameter of the fixing member.
3. The liquid crystal display device as set forth in claim 2, wherein the diameter of the fixing member increases in a direction in which the second positioning hole is away from the first positioning hole, and the maximum width of the bayonet is smaller than the minimum diameter of the fixing member.
4. The liquid crystal display device according to claim 3, wherein the bayonet comprises a first bayonet, a second bayonet, a third bayonet, and a fourth bayonet located around the connection hole, the first bayonet, the second bayonet, the third bayonet, and the fourth bayonet are identical in shape, and the first bayonet, the second bayonet, the third bayonet, and the fourth bayonet are sequentially connected.
5. The liquid crystal display device of claim 4, wherein the first positioning hole has a cross-sectional shape including at least one of a four-bar star, a five-bar star, and a six-bar star.
6. The liquid crystal display device as claimed in claim 4, wherein an adhesive material is provided in the bayonet, the adhesive material connecting the backlight and the fixing member.
7. The liquid crystal display device according to claim 3, wherein a diameter of the second positioning hole is greater than or equal to a diameter of the connection hole.
8. The liquid crystal display device according to claim 2, wherein the fixing member includes a first portion in contact with the first positioning hole, a second portion in contact with the second positioning hole, and a diameter of the first portion is larger than a maximum width of the bayonet.
9. The liquid crystal display device according to claim 2, wherein a diameter of the fixing member is constant in a direction in which the second positioning hole is away from the first positioning hole.
10. The liquid crystal display device according to claim 1, wherein a width of the bayonet is constant in a direction away from a center of the first positioning hole, and the width of the bayonet is smaller than a minimum diameter of the fixing member.
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| CN202110936141.4A CN113687538B (en) | 2021-08-16 | 2021-08-16 | Liquid crystal display device having a light shielding layer |
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| CN202110936141.4A CN113687538B (en) | 2021-08-16 | 2021-08-16 | Liquid crystal display device having a light shielding layer |
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| CN113687538A (en) | 2021-11-23 |
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