CN110928052A - Liquid crystal display backlight module - Google Patents
Liquid crystal display backlight module Download PDFInfo
- Publication number
- CN110928052A CN110928052A CN201911356177.4A CN201911356177A CN110928052A CN 110928052 A CN110928052 A CN 110928052A CN 201911356177 A CN201911356177 A CN 201911356177A CN 110928052 A CN110928052 A CN 110928052A
- Authority
- CN
- China
- Prior art keywords
- optical film
- liquid crystal
- backlight module
- film assembly
- crystal display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 33
- 239000012788 optical film Substances 0.000 claims abstract description 53
- 239000010408 film Substances 0.000 claims abstract description 27
- 239000006260 foam Substances 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000037303 wrinkles Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a liquid crystal display backlight module, wherein the liquid crystal display backlight module comprises: an optical film assembly and a format, the optical film assembly centrally disposed in the format; the periphery of the optical film assembly and the structural parts are provided with a plurality of buffer parts at intervals, and the buffer parts are fixedly connected with the structural parts. The liquid crystal display backlight module overcomes the problems that when an optical film assembly in the prior art is used in an environment with a large temperature difference, high-temperature film wrinkles and low-temperature film wrinkles easily occur, and displacement easily occurs in a vibration process to cause the film edge to shine, so that the display effect of a liquid crystal display is directly influenced.
Description
Technical Field
The invention relates to the technical field of liquid crystal screens, in particular to a liquid crystal screen backlight module.
Background
With the continuous development of liquid crystal display technology, people have higher and higher visual demands and reliability for liquid crystal display products. Liquid crystal displays are generally composed of three major components: the liquid crystal display device comprises a liquid crystal panel, a backlight module and a driving circuit. The design of the backlight module directly determines the display effect of the liquid crystal display. The backlight module is mainly assembled by a light source, a light guide plate, an optical film assembly, an outer frame and the like, wherein the design of the optical film assembly is particularly important for the backlight module. The optical film assembly is actually composed of a plurality of layers of optical film materials, which are placed right below the liquid crystal panel, and the brightening and uniform distribution of light can be realized through the optical film materials, and among the optical film assemblies of the general liquid crystal display, optical films which are often seen are as follows: DBEF (polarizing brightness enhancement film), BEF (prism film), diffusion film, and the like.
However, when the optical film assembly is used in an environment with a large temperature difference, the phenomena of high-temperature film wrinkle and low-temperature film wrinkle are easy to occur, and displacement is easy to occur in the vibration process, so that the film edge is shiny, and the display effect of the liquid crystal display is directly influenced.
Therefore, it is an urgent need to solve the above problems by providing a backlight module for a liquid crystal display that can effectively solve the above technical problems during the use of the backlight module.
Disclosure of Invention
Aiming at the technical problems, the invention aims to overcome the problems that the optical film assembly in the prior art is easy to generate high-temperature film wrinkle and low-temperature film wrinkle when used in an environment with larger temperature difference, and displacement is easy to generate in a vibration process to cause the film edge to shine, so that the display effect of a liquid crystal display is directly influenced, thereby providing the liquid crystal screen backlight module which can effectively solve the technical problems in the use process.
In order to achieve the above object, the present invention provides a liquid crystal display backlight module, which includes: an optical film assembly and a format, the optical film assembly centrally disposed in the format; wherein,
and a plurality of buffer parts are arranged around the optical film assembly and between the structural parts at intervals, and the buffer parts are fixedly connected with the structural parts.
Preferably, the buffer piece is foam, and the foam is connected with the structural part through a sealant.
Preferably, the optical film assembly comprises: arranged in sequence: a polarizing brightness enhancement film, a prism film, and a diffuser plate.
Preferably, the peripheral side wall of the optical film assembly is coated with a shading adhesive tape, and the shading adhesive tape is lapped at the inner edge of the structural member to block the light rays emitted from four sides.
Preferably, the periphery of the optical film assembly is further formed into a whole through glue encapsulation.
Preferably, the length of the foam is 40-50mm, the width of the foam is consistent with the width of the optical film assembly, and the thickness of the foam is 0.4-0.6 mm.
Preferably, the sealant is D05 reinforced glue.
Preferably, the thickness of the light-shielding tape is 0.9-1.1 mm.
According to the technical scheme, the liquid crystal display backlight module provided by the invention has the beneficial effects that: the problems that high-temperature membrane wrinkles and low-temperature membrane wrinkles are easy to occur when an optical membrane component in the prior art is used in an environment with large temperature difference, membrane edges are easy to shine due to displacement in a vibration process, and the display effect of a liquid crystal display is directly influenced are solved.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a liquid crystal display backlight module according to a preferred embodiment of the present invention.
Description of the reference numerals
1 optical film assembly 2 structural component
3 buffer 4 sealant
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional words "upper, lower, inner, outer" and the like included in the terms merely represent the orientation of the terms in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms.
As shown in fig. 1, the present invention provides a liquid crystal display backlight module, which includes: the optical film assembly comprises an optical film assembly 1 and a structural part 2, wherein the optical film assembly 1 is arranged in the structural part 2 in a centered mode; wherein,
a plurality of buffer parts 3 are arranged around the optical film assembly 1 and between the structural parts 2 at intervals, and the buffer parts are fixedly connected with the structural parts 2.
In a preferred embodiment of the present invention, the cushioning element 3 is foam, and the foam is connected to the structural element 2 by a sealing agent 4.
In a preferred embodiment of the present invention, the optical film assembly 1 includes: arranged in sequence: a polarizing brightness enhancement film, a prism film, and a diffuser plate.
In a preferred embodiment of the present invention, the peripheral side wall of the optical film assembly 1 is coated with a light-shielding tape, and the light-shielding tape is overlapped to the inner edge of the structural member 2 to shield the light from four sides.
In a preferred embodiment of the present invention, the periphery of the optical film assembly 1 is further encapsulated by glue to form a whole.
In a preferred embodiment of the present invention, the foam has a length ranging from 40 to 50mm, a width corresponding to the width of the optical film assembly, and a thickness ranging from 0.4 to 0.6 mm.
In a preferred embodiment of the present invention, the sealant 4 is D05 reinforced glue.
In a preferred embodiment of the present invention, the thickness of the light-shielding tape is 0.9 to 1.1 mm.
The following illustrates the principle of the liquid crystal display backlight module:
FIG. 1 is a schematic view of an optical film assembly comprising: the optical film assembly 1, the structural member 2, the foam 3 and the D05 are reinforced by glue 4. The arrangement mode of the optical film components is as follows: the method comprises the steps of polarizing a brightness enhancement film (with an angle of 0 degree), pasting a prism film (with an angle of parallel), the prism film (with an angle of vertical), a diffuser plate (with an angle of vertical) and 1.0mm, pasting a shading adhesive tape with a thickness of 1.0mm on the side wall of the prism film, using white glue to encapsulate the periphery of the prism film to form a whole body to prevent dirty spots from entering the optical film, positioning the manufactured optical film assembly 1 in a centered manner by using foam, placing the manufactured optical film assembly 1 in a structural member 2, wherein the length of the foam 3 at the long edge of the optical film assembly 1 is about 40-50mm, the width is consistent with the width of the optical film, the thickness is about 0.5mm, the foam at the short edge of the optical film assembly 1 is consistent with the data at the long edge, the number of sections on the long edge of the optical film assembly 1 is equal to the result of equal parts of the long edge of the optical film assembly, the, the foam treatment can play a role in positioning the centered optical film assembly on one hand and play a role in buffering the expansion of the optical film assembly in a high-temperature environment on the other hand; d05 reinforcement is used to prevent the optical film from shifting during vibration; the scheme of sectional dispensing and reinforcing can effectively avoid the phenomenon of film wrinkles of the optical film in high and low temperature environments.
In summary, the liquid crystal display backlight module provided by the invention overcomes the problems that the optical film assembly in the prior art is very easy to generate high-temperature film wrinkles and low-temperature film wrinkles when used in an environment with a large temperature difference, and displacement is very easy to generate in a vibration process, so that the film edge is shiny, and the display effect of a liquid crystal display is directly influenced.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (8)
1. The utility model provides a LCD screen backlight unit which characterized in that, LCD screen backlight unit includes: an optical film assembly (1) and a structural part (2), the optical film assembly (1) being centrally arranged in the structural part (2); wherein,
the optical film assembly is characterized in that a plurality of buffer parts (3) are arranged around the optical film assembly (1) and between the structural parts (2) at intervals, and the buffer parts are fixedly connected with the structural parts (2).
2. The liquid crystal display backlight module according to claim 1, wherein the buffer member (3) is foam, and the foam is connected with the structural member (2) through a sealant (4).
3. The liquid crystal screen backlight module according to claim 1, wherein the optical film assembly (1) comprises: arranged in sequence: a polarizing brightness enhancement film, a prism film, and a diffuser plate.
4. The lcd backlight module according to claim 1, wherein the peripheral side wall of the optical film assembly (1) is adhered with a light shielding tape, and the light shielding tape is overlapped to the inner edge of the structural member (2) to shield the light rays emitted from four sides.
5. The liquid crystal display backlight module according to claim 4, wherein the periphery of the optical film assembly (1) is further encapsulated by glue to form a whole.
6. The liquid crystal display backlight module according to claim 2, wherein the foam has a length ranging from 40 to 50mm, a width consistent with the width of the optical film assembly, and a thickness ranging from 0.4 to 0.6 mm.
7. The liquid crystal display backlight module according to claim 2, wherein the sealant (4) is D05 reinforced glue.
8. The LCD backlight module of claim 4, wherein the thickness of the light-shielding tape is 0.9-1.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356177.4A CN110928052A (en) | 2019-12-25 | 2019-12-25 | Liquid crystal display backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911356177.4A CN110928052A (en) | 2019-12-25 | 2019-12-25 | Liquid crystal display backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110928052A true CN110928052A (en) | 2020-03-27 |
Family
ID=69860926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911356177.4A Pending CN110928052A (en) | 2019-12-25 | 2019-12-25 | Liquid crystal display backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110928052A (en) |
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| CN108732821A (en) * | 2018-06-07 | 2018-11-02 | 惠州市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN109901322A (en) * | 2019-04-04 | 2019-06-18 | 深圳创维－Rgb电子有限公司 | Display module |
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-
2019
- 2019-12-25 CN CN201911356177.4A patent/CN110928052A/en active Pending
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| TW200720766A (en) * | 2005-11-18 | 2007-06-01 | Radiant Opto Electronics Corp | Corner positioning structure of periphery light-input type backlight module of liquid crystal display |
| JP2008299181A (en) * | 2007-06-01 | 2008-12-11 | Hitachi Ltd | Liquid crystal display |
| CN102314008A (en) * | 2011-07-08 | 2012-01-11 | 友达光电股份有限公司 | Display device |
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| CN202691938U (en) * | 2012-07-27 | 2013-01-23 | 京东方科技集团股份有限公司 | Frame, frame group, backlight module and display device |
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Application publication date: 20200327 |